The development of equations to predict tree height, crown diameter, crown depth from stem diameter of a tree species enables arborists, researchers, and urban forest managers to model costs and benefits, analyze alte...The development of equations to predict tree height, crown diameter, crown depth from stem diameter of a tree species enables arborists, researchers, and urban forest managers to model costs and benefits, analyze alternative management scenarios, and determine the best management practices for sustainable forests. The objective of this study was to develop regression prediction models for tree age, tree height, crown diameter, crown ratio and crown depth for A. senegal growing in Ferlo, in the northern Senegal. Four plantations of different years old (ISRA, 10 years old plantations, Ndodj, 8 years old plantations, Boulal, 5 years old plantations and Déali, 4 years old plantations) were selected. The following dendometric variables: crown height, crown diameter, stem diameter at the breast height, stem basal diameter (at 0.30 m) and the height from the tree base to first branch were measured on a total of 489 trees. The results suggested that the ecological structure of the different year old A. Senegal plantation revealed a bell-shaped form with left dissymmetric distribution indicating a predominance of individuals with small diameter at breast height. Allometry study of A. Senegal showed highly significant positive correlations (p = 0.00) between stem diameter at breast height, stem basal diameter, tree height, crown diameter and crown depth. Positive correlations were also found between crown diameter, tree height and crown height. Prediction models derived from these relationships can be used to estimate the tree height, stem diameter at breast height and crown depth from crown diameter with greater precision. As for A. Senegal age estimation, the established model is not strong as it can explain only 49.1% of the age variation.展开更多
Native of West Africa, Saba senegalensis belongs to the family of Apocynaceae, and is a wild plant that is mainly exploited in the diet. It grows mainly along riverbanks, in wooded savannah areas in humid areas, in ga...Native of West Africa, Saba senegalensis belongs to the family of Apocynaceae, and is a wild plant that is mainly exploited in the diet. It grows mainly along riverbanks, in wooded savannah areas in humid areas, in gallery forests and in rocky ravines and hills. Saba senegalensis is a large woody liana with white latex, dark gray bark, can reach more than 40 m high and a trunk that can measure up to 47 cm in diameter. The fruit is a globose shell, 7 to 10 cm long, 6 to 8 cm wide. The leaves are opposite, elliptical, dark green in color, about 8 to 15 cm long and 4 to 6 cm wide. This fruit is characterized by its richness in antioxidant molecules especially vitamin C (480 mg/100 g) and total polyphenols (945.83 mg/100 g). The fruit contents 41.43 until 80% water with a low pH (2.24). In Senegal, the fruit is eaten as it or transformed into puree, nectar, syrup, canned etc. It is a plant that has enormous therapeutic virtues, from the fruit to the roots through the leaves, bark, and latex. Despite its high nutritional potential, its many therapeutic virtues and its economic potential, Saba senegalensis remains under-exploited. Further researches on the nutritional and therapeutic properties deserve to be conducted.展开更多
The combined effects of climate change and human pressure have led to the progressive degradation of natural resources in semi-arid regions. Woody taxa in these regions play an important role in the functioning and se...The combined effects of climate change and human pressure have led to the progressive degradation of natural resources in semi-arid regions. Woody taxa in these regions play an important role in the functioning and services provided by semi-arid savannah by serving as forage for both domestic and non-domestic grazers. Maintaining the functioning of semi-arid savannas thus requires understanding the dynamics of these communities of woody taxa and their responses to exogenous forces, such as climate. To better understand the dynamics of woody taxa in semi-arid environments we collected dendrometric characteristics from five field sites along an environmental gradient in the Ferlo region of central Senegal. Density and basal area were found to be greater in the northern part of the zone, contrasted with the distance between individuals and crown cover, which is greater in the southern part of the zone. Stand structure estimated from the distribution according to height and diameter at breast height shows a preponderance of individuals in the shrub layer, although with a significant representation of the tree layer in southern Ferlo. Stand regeneration was better in the south and less effective in the north. There was a trend towards the rejuvenation of populations belonging to the dominant species. There were only three species for which degradation was not apparent (Balanites aegyptiaca, Acacia raddiana and Dalbergia melanoxylon), all of which have important ethnobotanical uses, suggesting that human use of taxa can play an important role in preventing degradation. Three distinct groups of woody taxa were found to correspond to gradients of precipitation, topography, and human land use pressure. Our results suggest an important role in the management and reintroduction of woody species in the Sahel and the regulation of pastoral techniques necessary for the rehabilitation of the agro-pastoral zone of Senegal.展开更多
The locality of Thiès has significant mining and hydrogeological resources that are of major economic interest and necessitates a sustainable management. Most of these resources are contained in the Paleocene. Fo...The locality of Thiès has significant mining and hydrogeological resources that are of major economic interest and necessitates a sustainable management. Most of these resources are contained in the Paleocene. For a better assessment of Paleocene, we elaborated a spatial model using available seismic lines, oil and hydraulic drills. The data were integrated using interpolation, mainly natural neighbor method. The obtained model should make it possible to understand the variation of the lithostratigraphic parameters of the Paleocene. The extraction from the model of the upper and the lower limits showed that the Paleocene is shallow and is outcropping to subout-cropping in the area of Thiès. The model was validated using previously available geological map. Also, a crosscorrelation of the predicted and the observed data showed that the model is accurate.展开更多
<em>Annona senegalensis</em> (Pers.) or Annone from Senegal is a species found in the West African savannah and para-littoral sands. It offers real possibilities of socio-economic use, particularly in the ...<em>Annona senegalensis</em> (Pers.) or Annone from Senegal is a species found in the West African savannah and para-littoral sands. It offers real possibilities of socio-economic use, particularly in the medical, nutritional, ecosystem conservation and poverty alleviation fields. However, this wild species remained not fully exploited despite its potentialities. As a result, there is a need to regenerate this species;therefore, the<em> in vitro</em> propagation from adult material was undertaken. For this purpose, axillary nodes from plant regrowth taken from elderly subjects were aseptically introduced into different media enriched or not with phytohormones. Among the 3 culture media tested, that of Murashige and Skoog (MS, 1962) was the most reactive and made it possible to develop a micropropagation protocol for adult material of <em>A. senegalensis</em>. Thus, the introduction of these explants in media containing cytokinins (BAP and Kinetin) significantly increased the reactivity compared to media without hormones. If the best average numbers of shoots (2.3) and nodes (5.3) are obtained in MS + BAP 2 mg<span style="white-space:nowrap;"><span style="white-space:nowrap;"><span style="white-space:nowrap;">·</span></span></span>L<sup><span style="white-space:nowrap;"><span style="white-space:nowrap;"><span style="white-space:nowrap;">−</span></span></span>1</sup>, with a reactivity of 91.66%, the addition of 0.1 mg<span style="white-space:nowrap;"><span style="white-space:nowrap;"><span style="white-space:nowrap;">·</span></span></span>L<sup><span style="white-space:nowrap;"><span style="white-space:nowrap;"><span style="white-space:nowrap;">−</span></span></span>1</sup> NAA gave the best average length (8.25 cm) of vitroplants. An induction time of 3 days into darkness with IBA at 50 mg<span style="white-space:nowrap;"><span style="white-space:nowrap;"><span style="white-space:nowrap;">·</span></span></span>L<sup><span style="white-space:nowrap;"><span style="white-space:nowrap;"><span style="white-space:nowrap;">−</span></span></span>1</sup>, followed by a transfer to hormone-free expression medium (MS/2) under light, resulted in a rooting rate of 58.33%. After the gradual weaning of the young plants in a mini-greenhouse, under shade for 3 weeks, 50% of the plants survived. This <em>in vitro</em> regeneration protocol can therefore be adopted for the clonal propagation of adult material of <em>A. senegalensis</em>. However, the rooting rate can be improved by trying other hormonal combinations based on auxins or by considering <em>ex</em>-<em>vitro</em> rooting during shade weaning.展开更多
The aim of this work was to study the connection between periodontal diseas of women during their pregnancy and the weight of newborn infants the women gave birth to. Method: It was a case-control study and carried ou...The aim of this work was to study the connection between periodontal diseas of women during their pregnancy and the weight of newborn infants the women gave birth to. Method: It was a case-control study and carried out on the outskirts of Dakar (Senegal). The sample consisted of 129 mothers with infants of weight < 2500 g (case) and 258 mothers with infants of weight ≥ 2500 g (control). The socio-demographic variables, patterns of life, history and outcome of pregnancy were collected. The variables relating to periodontal status included the plaque index, inflammation, bleeding, loss of clinical attachment and pocket depth. Data were analyzed by the R software. Logistic regression had identified associations on the threshold of 5%. Results: The proportions of mothers with periodontitis were 70.6% among cases versus 33% in controls. Periodontitis was significantly associated with low weight (OR = 4 [2.3 - 5.7] 4) adjusted on age, BMI and other periodontal indices. Conclusion: periodontal disease appears to be involved in the occurrence of low birth weight in the African context. The introduction of an oral component in prenatal consultations is therefore necessary for the health of mothers and their children.展开更多
Biochemical characterization was carried out on five mango varieties grown in Senegal, two of which are intended for export (Kent and Keitt) and three to local consumption, on the one hand, and to national marketing, ...Biochemical characterization was carried out on five mango varieties grown in Senegal, two of which are intended for export (Kent and Keitt) and three to local consumption, on the one hand, and to national marketing, on the other. It can be seen that the flavanols composition is between “0.74 ± 0.03 mg/100 g” to “4.70 ± 0.33 mg/100 g” and the total polyphenols composition is “265.83 ± 33.70 mg gallic acid/100 g” to “834.29 ± 25.78 mg gallic acid/100 g”. This analysis shows that the variety Bk is richer in polyphenols followed by the variety Dr then Knt and finally the lowest proportions are noted with the varieties Kt and SL. The analysis of antioxidant activity shows us percentages ranging from “4.16% ± 2.68% inhibition” to “50.21% ± 3.91% inhibition”. It was noted that the SL and Knt varieties give the highest inhibition percentages of “50.21 ± 3.91” and “33.97 ± 0.36” respectively. Variety Bk gives the lowest percentage followed by variety Kt. The Dr variety is the richest in flavonoids “11.75 ± 0.27” followed by the SL variety “11.27 ± 0.10” and the lowest composition is noted in the Knt variety “1.91 ± 0.04”. For total sugars, the most important contents are found in the varieties: Bk “12.71 ± 0.32 mg/100 g” followed by Dr “11.5 ± 0.33 mg/100 g” and SL “9.86 ± 0.06 mg/100 g”. This time the variety Kt stands out with also important proportions. For quantification, there is a slight difference in the values obtained for the different varieties studied. However, the highest values are observed in local varieties: “0.36 ± 0.06 g/100 g” for Bk and Dr followed by SL “0.31 ± 0.01 g/100 g”. The study of the mineral composition shows that the local varieties are the richest and the Knt variety is the poorest. The difference in composition noted within the same variety can be explained by the fact that some varieties have an advanced maturity compared to others.展开更多
The African Rice Gall Midge, Orseolia oryzivora H. & G., is an important insect pest recorded in 20 countries in Sub-Sahara Africa. In Burkina Faso, the insect pest particularly prevails in Western and South-Weste...The African Rice Gall Midge, Orseolia oryzivora H. & G., is an important insect pest recorded in 20 countries in Sub-Sahara Africa. In Burkina Faso, the insect pest particularly prevails in Western and South-Western of the country where both biotic and abiotic conditions favor its development. The insect pest can damage up to 60% of rice tillers in Western Burkina Faso. A study was conducted during the 2011 wet season in the Kou Valley, located 25 km North-West of Bobo-Dioulas- so, Western Burkina Faso. Its objective was to evaluate the damage of this insect pest in farmers’ fields in relation with rice transplanting periods. The Kou Valley rice scheme, 1200 ha, was divided into two zones within which 48 farmers’ fields were randomly selected in relation with rice transplanting periods: P1: 1st period;P2: 2nd period and P3: 3rd period;that is 16 fields per period. Both agronomic and entomological evaluations were performed each week starting from the 21th day after transplanting (DAT) up to 84 DAT. Results showed that the highest average damage level (16% of galls) was recorded in the 3rd transplanting period. The highest larval and pupal parasitism was recorded in P3 at 84 DAT. Pupal parasitism due to Aprostocetus procerae Risbec was higher than larval parasitism due to Platygaster diplosisae Risbec. Lastly, the lowest yield (4.78 t/ha) was recorded in P3. These results can be used in the implementation of an integrated pest management strategy for this insect pest in the Kou Valley.展开更多
Rainfall and evapotranspiration are two vital elements for food production under rainfed agriculture. This study aims at investigating the combined changes in these variables in the form of aridly index in the souther...Rainfall and evapotranspiration are two vital elements for food production under rainfed agriculture. This study aims at investigating the combined changes in these variables in the form of aridly index in the southern Senegal. The temporal trends in annual and monthly (from May to October) aridity index, rainfall and evapotranspiration are examined and adaptation strategies to the vulnerability of rainfed rice cultivation to the changes are developed. The results show a significant decreasing trend in annual rainfall at all study locations for the period 1922-2015. When analyzing the trends in sub-periods, there are two clear patterns in the annual rainfall series: a decreasing trend for the period 1922-1979 and a reversal increasing trend for the period 1980-2015. An increasing trend is also observed in annual reference evapotranspiration. The results reveal that the region will be drier with a significant increase in aridity at the annual and most monthly series. Appropriate adaptation strategies should be implemented to diminish the adverse influence of the increasing aridity on rice productivity for a sustainable agriculture.展开更多
Geochemical and Geostatistical tools were used to assess: 1) the chemical quality and, geochemical processes in crystalline rock aquifers in Sabodala (Eastern Senegal) and its surroundings and 2) the impact of mining ...Geochemical and Geostatistical tools were used to assess: 1) the chemical quality and, geochemical processes in crystalline rock aquifers in Sabodala (Eastern Senegal) and its surroundings and 2) the impact of mining activities on their quality. A total of 26 water samples collected at boreholes, dug wells and stream, were analyzed to determine major and trace elements concentration focused on elements that represent more threats on human health. Boxplots define chemical characteristics of water for each aquifer formation compared to surface waters. Geostatistical analysis show two sources of water mineralization with regard to major elements: a first natural source characterized by Ca-Mg-HCO3 water type from boreholes and unpolluted surface water and a second group characterized by polluted water by nitrates with Na-NO3-Cl type mainly observed in upper weathered aquifers. However, considering trace element, geostatistical analysis showed three water groups: water with very low trace element concentrations encountered in boreholes and unpolluted surface waters, and waters with relatively high trace element concentrations such as Al observed in areas affected by gold mining activities and finally, polluted waters by Ni, Co, Mn and Cr observed at Sabodala. Results show that in eastern Senegal well waters are vulnerable and often affected by pollution.展开更多
The Douta permit of African Star Resources/Thor Explorations, located in the southeast of Senegal, in the Kédougou-Kéniéba Inlier (western part of the West African Craton), is dominated to the East by m...The Douta permit of African Star Resources/Thor Explorations, located in the southeast of Senegal, in the Kédougou-Kéniéba Inlier (western part of the West African Craton), is dominated to the East by metasedimentary formations such as greywackes, shales, graphitic shales, quartzites, cherts, claystones and breccias characteristic of the Dialé-Daléma basin. To the West, the mafic formations of the Mako volcanic belt are the most common. Metasedimentary rocks are associated with metavolcanosedimentary terms found at the contact zones between the two (2) Birimian groups. These different geological formations are cut by mafic dolerite and gabbro sills and/or dykes, as well as quartz and microgranite veins. The Douta gold project is crossed from North to South by the MTZ (Main Transcurrent Zone), generally oriented NE-SW and becoming N-S towards the North. The permit is characterized by several shear corridors. The rocks are affected by brittle, brittle-ductile to ductile deformations. The gold mineralization is hosted by a NE-trending shear corridor called the Makosa corridor (Makosa shear zone), therefore sub-parallel to the MTZ. It has a subvertical dip (75˚ to 85˚ to the NW). It is associated with a hydrothermal phase characterized by quartz-sericite-epidote-fine, disseminated pyrite and arsenopyrite ± albite ± chlorite paragenesis. These minerals testify to the existence of a low degree of metamorphism (greenschist facies, epizonal domain) in the area. However, metamorphism reaches amphibolite facies in some places, particularly in the vicinity of intrusive bodies, with the presence of hornblende (amphiboles) and plagioclase. The gold mineralization is mainly hosted by two (2) metasedimentary lithological units: meta-greywackes and shales.展开更多
Introduction: Home delivery is still a health problem in Kolda (Senegal). The aim of this work is to study the factors associated with the place of delivery in a situation of free care delivery. Method: A descriptive ...Introduction: Home delivery is still a health problem in Kolda (Senegal). The aim of this work is to study the factors associated with the place of delivery in a situation of free care delivery. Method: A descriptive and analytical cross-sectional study was carried out. Sampling was in two-stage clusters. The study focused on women who gave birth in the last 12months. The data were collected during an individual interview at home. The collection focused on knowledge, attitudes and practices about delivery. Logistic regression was used to explore the determinants of childbirth at the level of health facility. Results: The average age was 25.4 ± 6.5 years. Among the interviewed women, education was reported in 35% of the women and 55% of women estimate that the closest health facility is within 5 km to their home. The time to get to the nearest health facility is less than 15 minutes for 39% of the interviewed women. The prevalence of home delivery was 43.5%. Home delivery was related to the remoteness of the health facility (2.43 [1.75 - 3.37]) but also to incomplete antenatal care (2.52 [1.59 - 4.00]). Support groups highlighted difficulties of access to health facilities because of remoteness. Interviews revealed a lack of involvement of husbands in seeking care for women. Cultural barriers are still there. Conclusions: Despite the gratuity of delivery, the remoteness of health structures and socio-cultural factors are still barriers to access to care for pregnant women. These aspects must be taken into account in health policies. Multi-lateral interventions should be implemented to provide solutions for this health problem.展开更多
Introduction: Congenital heart disease (CHD) is a malformation of the heart present at birth and resulting from a developmental defect during embryonic life. The aim was to assess CHD in rural areas. Methodology: This...Introduction: Congenital heart disease (CHD) is a malformation of the heart present at birth and resulting from a developmental defect during embryonic life. The aim was to assess CHD in rural areas. Methodology: This is a retrospective study conducted over a period of 2 years in rural Senegal. Results: During the study period, we collected 79 patients with CHD, representing a hospital prevalence of 2.6%. The mean age at diagnosis was 17.05 months and the sex ratio was 1.19. The mean birth weight was 2826 g. The main comorbidities were anaemia (54.43%) and respiratory infections 38 cases (48.10%). Respiratory distress was the most common sign with 98.73%. Radiological cardiomegaly was noted in 86.7%. The most frequent CHD were interventricular septal defect (IVD) 21.51% and atrial septal defect (ASD) 8.86%. No patient was able to receive surgical treatment. Seven children died (8.86%) and 21 children were lost to follow-up (26.58%). On Doppler echocardiography, 16.45% of the patients had pulmonary arterial hypertension (PAH). Conclusion: In light of this work, emphasis should be placed on the quality of antenatal consultations, the quality of management and the regular availability of echocardiography and a cardio-paediatrician in order to reduce morbidity and mortality.展开更多
In Africa, acute rheumatic fever is endemic. Cardiac involvement is one of the most common complications in the form of valvular heart disease representing all damages to the heart valves. It is in this perspective th...In Africa, acute rheumatic fever is endemic. Cardiac involvement is one of the most common complications in the form of valvular heart disease representing all damages to the heart valves. It is in this perspective that we realized this study whose general objective was to evaluate the results of mitral repair surgery in children in Senegal and the specific objective was to state the indications for mitral repair surgery and assess the results in terms of morbidity and mortality. This is a retrospective and analytical monocentric study, in the thoracic and cardiovascular surgery department of FANN National University Hospital Center in Dakar. It took place over a period of 30 months. All the patients who underwent mitral surgery, aged less than 18 years were included. The total number of patients was 63, including 39 girls and 24 boys, a sex ratio of 0.62. The average age at the time of the surgery was 12 years old [5 - 17]. The functional symptomatology was dominated by the dyspnea found in all the patients. Cardiac ultrasound was diagnosed with mitral regurgitation in all patients. For all surgical procedures, the approach was a vertical midline sternotomy. The mitral valve was approached by left atriotomy in 40 patients (63.5%) and by transseptal way in 23 patients. All patients had undergone mitral valve repair associated or not with either aortic valve repair in 9 patients (14.2%), aortic valve replacement in 3 patients (4.8%), or one tricuspid valve repair in 31 patients (49%). The average duration of intubation was 6 hours [2 - 52]. The average length of stay in intensive care was 2 days. Postoperative complications have been observed. Surgery was performed in 10 patients with 3 mitral valve replacements, 2 aortic valve replacements, a double mitral and an aortic valve replacement associated with a tricuspid repair and in 4 cases a perfection of their mitral repair. Early and late surgical mortality was zero. The average follow-up time for our patients was 9 months [1 - 26]. During their follow-up, the evolution was favorable in 89% of patients who no longer had any functional symptoms.展开更多
The western area of Senegal was the site of a basic volcanism in the Tertiary and Quaternary. That volcanism had caused the formation of alkaline olivine basalts, basanites and nephelinites from microlitic and porphyr...The western area of Senegal was the site of a basic volcanism in the Tertiary and Quaternary. That volcanism had caused the formation of alkaline olivine basalts, basanites and nephelinites from microlitic and porphyritic texture to dolerite texture. The geochemistry of major elements shows that the Quaternary basalts are more aluminous and more siliceous, but they contain less magnesium, less iron and less calcium than the Tertiary basalts. Two types of basalt occur here, based on the characteristics of the major elements in the Tertiary lavas: the highly undersaturated basalts of the Cape Verde Peninsula and the slightly undersaturated basalts of the Thiès Plateau. The characteristics of the trace elements reveal shallow interactions due to the contamination and/or assimilation, and to the fractional crystallization, but not due to the heterogeneity of the source. The strong enrichment in light rare earth elements (LREE) and the slight enrichment in heavy rare earth elements (HREE), the anomalies which are negative in K and Pb and positive in Nb, Ta and Eu of the Tertiary and Quaternary basalts of Western Senegal and similar anomalies of the same elements (Pb not analyzed) described in the Cape Verde islands, allow us to establish links between the petrogenetic mechanisms that had caused the formation of the basalts of this Islands and Western Senegal. Moreover, the volcanic activity in Western Senegal (of continental lntraplate type) and that of the Cape Verde Islands (oceanic intraplate type) are probably related to the hot spot located on the vertical of the Cape Verde.展开更多
Saba senegalensis is a popular wild fruit;which is consumed as such or transformed into various products. Despite its economic potential, its nutritional potential is unknown. The objective of this study is to charact...Saba senegalensis is a popular wild fruit;which is consumed as such or transformed into various products. Despite its economic potential, its nutritional potential is unknown. The objective of this study is to characterize its fruits according to Senegal’s main production areas. The study included five samples from five geographical areas of Senegal. Parameters measured include pH, protein, lipids, ash, moisture, vitamin C, carotenoids, polyphenols, minerals, and sugars. The results showed that for moisture, proteins, lipids, pH and reducing sugars did not differ significantly (p 0.05%) for all accessions. Vitamin C content varies between 32.86 and 198.22 mg·100g<sup>-</sup><sup>1</sup>, carotenoids with a content of between 5.05 and 9.12 mg·100g<sup>-</sup><sup>1</sup>;polyphenol contents are between 1.17 and 2.56 g·100g<sup>-</sup><sup>1</sup>. The nutritional value of Saba fruits appears to be homogeneous in Senegal. A thorough study of the functional molecules seems necessary for a better appreciation of the potential of this fruit.展开更多
Anthracnose is the one of the most devastating diseases of mango produced in the southern part of Senegal. The field trials against post harvest rot due to anthracnose took place in three orchards over two production ...Anthracnose is the one of the most devastating diseases of mango produced in the southern part of Senegal. The field trials against post harvest rot due to anthracnose took place in three orchards over two production seasons, in 2009 and 2010. Three systemic fungicides (thiophanate methyl, azoxystrobin and myclobutanyl) and one contact fungicide (mancozeb) were tested for their efficacy. The first treatments in 2009 took place in the rainy season, while 20% of mangoes on trees exhibited anthracnose lesions. At ripening stage, 100% of fruits from non treated control mango trees were affected by anthracnose and got rotten, while between 73.2% and 80% of mangoes ripened free of disease when treated with thiophanate methyl. With the treatment with azoxystrobin, between 46.6% and 60% of fruits were not infected. Treatment with myclobutanyl was less effective. This level of effectiveness was clearly improved in 2010 by preventive spraying, days ahead of onset of the rainy season, before the appearance of anthracnose symptoms on fruits. The level of effectiveness was higher respectively for thiophanate methyl (between 96% and 100% of fruits not infected) and azoxystrobin (between 84% and 96% of fruits not infected).展开更多
Tuberculosis is a major public health problem, especially in developing countries. Neuro-meningeal involvement is rare but represents one of the most severe forms with high morbidity and mortality. We report the case ...Tuberculosis is a major public health problem, especially in developing countries. Neuro-meningeal involvement is rare but represents one of the most severe forms with high morbidity and mortality. We report the case of an ischemic stroke complicating neuromeningeal and pulmonary tuberculosis in a four-month-old infant at the National Hospital Center of children Albert Royer (Senegal). The case was a four-month-old, male infant with no history. His vaccination was up to date according to Senegal’s expanded vaccination program. There was no notion of tuberculosis contagion. He was seen for a prolonged fever for more than a month and chronic cough. He had moderate malnutrition. Neurological examination revealed coma, meningeal syndrome, generalized tonic convulsions and hypertonia. The pupils were in bilateral miosis. Osteotendinous reflexes were abolished with a bilateral Babinski sign. He also had severe respiratory distress, bilateral pulmonary condensation syndrome. Brain computed tomography was in favor of an ischemic stroke. The test GeneXpert MTB/RIF was positive on cerebrospinal fluid and gastric tubing fluid. The curative treatment was based on a quadruple therapy based on rifampicin, isoniazid, pirazinamide and ethambutol. The evolution was unfavorable with the death of the patient.展开更多
Introduction: Cervical cancer is preventable through vaccination against papillomaviruses and screening for precancerous lesions. The objective of this study was to determine the frequency of screening practice and to...Introduction: Cervical cancer is preventable through vaccination against papillomaviruses and screening for precancerous lesions. The objective of this study was to determine the frequency of screening practice and to identify associated factors. Methods: This was a cross-sectional descriptive and analytical study. Data were collected from individual interviews during household surveys. Data collection took place from (1st</sup>) to (30th</sup>) September (2021). The following were explored: socio-demographic characteristics, knowledge, attitudes and practices of women regarding screening. Results: A total of (294) women aged between (18) and (69) years were included. The mean age was (35.79) years (±9.81). The median age was (34) years. The frequency of screening was (16%);that of precancerous lesions was (4.26%). Factors statistically and significantly associated with screening uptake were cervical cancer information (OR = 5.42 (1.27 - 23.16);p = 0.003), knowledge of the availability of screening (ORa = 7.73 (3.01 - 18.51);p - 7.31);p = 0.014). Conclusion: Frequency of pre-cancerous lesions of cervical cancer is high in Koumpentoum health district (4.26%), while the practice of screening is low there (16%). The factors associated with this low performance are related to a lack of adequate knowledge of women about cervical cancer.展开更多
Objectives: This work was carried out in order to determine the profile of different HPV genotypes in a population of women attending radiotherapy (RT). Material and Methods: This is a retrospective study. Sixty paraf...Objectives: This work was carried out in order to determine the profile of different HPV genotypes in a population of women attending radiotherapy (RT). Material and Methods: This is a retrospective study. Sixty paraffin blocks were chosen by simple random method upon 1015 blocks of cervix cancer diagnosed in Senegal’s public hospitals laboratories of anatomopathology. The strains of HPV genotyping were done with polymerase chain reaction (PCR) multiplex using primers MY09-MY11, GP5+ and GP6+. Results: Among the sixty examined blocks, DNA extraction was unsatisfactory in three cases. All women were infected with HPV high risk (HR). The different HPV genotypes isolated were HPV 16 (49/96%), 18 (8/16%), 35 (7/14%), 45 (4/8%), and 58 (2/4%). It was a single infection in 36 cases (70, 60%), co-infection in 11 cases (21, 60%) and a multi-infection in 4 cases (7, 80%). Conclusion: The prevalence of HPV found in our series is comparable to that found in the world. To complete this study, a large population of Senegalese patients with uterine cervix cancer (CC) and HPV genotype, is needed to determine if HPV genotypes could be considered as a prognostic marker in patients with uterine CC after RT.展开更多
文摘The development of equations to predict tree height, crown diameter, crown depth from stem diameter of a tree species enables arborists, researchers, and urban forest managers to model costs and benefits, analyze alternative management scenarios, and determine the best management practices for sustainable forests. The objective of this study was to develop regression prediction models for tree age, tree height, crown diameter, crown ratio and crown depth for A. senegal growing in Ferlo, in the northern Senegal. Four plantations of different years old (ISRA, 10 years old plantations, Ndodj, 8 years old plantations, Boulal, 5 years old plantations and Déali, 4 years old plantations) were selected. The following dendometric variables: crown height, crown diameter, stem diameter at the breast height, stem basal diameter (at 0.30 m) and the height from the tree base to first branch were measured on a total of 489 trees. The results suggested that the ecological structure of the different year old A. Senegal plantation revealed a bell-shaped form with left dissymmetric distribution indicating a predominance of individuals with small diameter at breast height. Allometry study of A. Senegal showed highly significant positive correlations (p = 0.00) between stem diameter at breast height, stem basal diameter, tree height, crown diameter and crown depth. Positive correlations were also found between crown diameter, tree height and crown height. Prediction models derived from these relationships can be used to estimate the tree height, stem diameter at breast height and crown depth from crown diameter with greater precision. As for A. Senegal age estimation, the established model is not strong as it can explain only 49.1% of the age variation.
文摘Native of West Africa, Saba senegalensis belongs to the family of Apocynaceae, and is a wild plant that is mainly exploited in the diet. It grows mainly along riverbanks, in wooded savannah areas in humid areas, in gallery forests and in rocky ravines and hills. Saba senegalensis is a large woody liana with white latex, dark gray bark, can reach more than 40 m high and a trunk that can measure up to 47 cm in diameter. The fruit is a globose shell, 7 to 10 cm long, 6 to 8 cm wide. The leaves are opposite, elliptical, dark green in color, about 8 to 15 cm long and 4 to 6 cm wide. This fruit is characterized by its richness in antioxidant molecules especially vitamin C (480 mg/100 g) and total polyphenols (945.83 mg/100 g). The fruit contents 41.43 until 80% water with a low pH (2.24). In Senegal, the fruit is eaten as it or transformed into puree, nectar, syrup, canned etc. It is a plant that has enormous therapeutic virtues, from the fruit to the roots through the leaves, bark, and latex. Despite its high nutritional potential, its many therapeutic virtues and its economic potential, Saba senegalensis remains under-exploited. Further researches on the nutritional and therapeutic properties deserve to be conducted.
文摘The combined effects of climate change and human pressure have led to the progressive degradation of natural resources in semi-arid regions. Woody taxa in these regions play an important role in the functioning and services provided by semi-arid savannah by serving as forage for both domestic and non-domestic grazers. Maintaining the functioning of semi-arid savannas thus requires understanding the dynamics of these communities of woody taxa and their responses to exogenous forces, such as climate. To better understand the dynamics of woody taxa in semi-arid environments we collected dendrometric characteristics from five field sites along an environmental gradient in the Ferlo region of central Senegal. Density and basal area were found to be greater in the northern part of the zone, contrasted with the distance between individuals and crown cover, which is greater in the southern part of the zone. Stand structure estimated from the distribution according to height and diameter at breast height shows a preponderance of individuals in the shrub layer, although with a significant representation of the tree layer in southern Ferlo. Stand regeneration was better in the south and less effective in the north. There was a trend towards the rejuvenation of populations belonging to the dominant species. There were only three species for which degradation was not apparent (Balanites aegyptiaca, Acacia raddiana and Dalbergia melanoxylon), all of which have important ethnobotanical uses, suggesting that human use of taxa can play an important role in preventing degradation. Three distinct groups of woody taxa were found to correspond to gradients of precipitation, topography, and human land use pressure. Our results suggest an important role in the management and reintroduction of woody species in the Sahel and the regulation of pastoral techniques necessary for the rehabilitation of the agro-pastoral zone of Senegal.
文摘The locality of Thiès has significant mining and hydrogeological resources that are of major economic interest and necessitates a sustainable management. Most of these resources are contained in the Paleocene. For a better assessment of Paleocene, we elaborated a spatial model using available seismic lines, oil and hydraulic drills. The data were integrated using interpolation, mainly natural neighbor method. The obtained model should make it possible to understand the variation of the lithostratigraphic parameters of the Paleocene. The extraction from the model of the upper and the lower limits showed that the Paleocene is shallow and is outcropping to subout-cropping in the area of Thiès. The model was validated using previously available geological map. Also, a crosscorrelation of the predicted and the observed data showed that the model is accurate.
文摘<em>Annona senegalensis</em> (Pers.) or Annone from Senegal is a species found in the West African savannah and para-littoral sands. It offers real possibilities of socio-economic use, particularly in the medical, nutritional, ecosystem conservation and poverty alleviation fields. However, this wild species remained not fully exploited despite its potentialities. As a result, there is a need to regenerate this species;therefore, the<em> in vitro</em> propagation from adult material was undertaken. For this purpose, axillary nodes from plant regrowth taken from elderly subjects were aseptically introduced into different media enriched or not with phytohormones. Among the 3 culture media tested, that of Murashige and Skoog (MS, 1962) was the most reactive and made it possible to develop a micropropagation protocol for adult material of <em>A. senegalensis</em>. Thus, the introduction of these explants in media containing cytokinins (BAP and Kinetin) significantly increased the reactivity compared to media without hormones. If the best average numbers of shoots (2.3) and nodes (5.3) are obtained in MS + BAP 2 mg<span style="white-space:nowrap;"><span style="white-space:nowrap;"><span style="white-space:nowrap;">·</span></span></span>L<sup><span style="white-space:nowrap;"><span style="white-space:nowrap;"><span style="white-space:nowrap;">−</span></span></span>1</sup>, with a reactivity of 91.66%, the addition of 0.1 mg<span style="white-space:nowrap;"><span style="white-space:nowrap;"><span style="white-space:nowrap;">·</span></span></span>L<sup><span style="white-space:nowrap;"><span style="white-space:nowrap;"><span style="white-space:nowrap;">−</span></span></span>1</sup> NAA gave the best average length (8.25 cm) of vitroplants. An induction time of 3 days into darkness with IBA at 50 mg<span style="white-space:nowrap;"><span style="white-space:nowrap;"><span style="white-space:nowrap;">·</span></span></span>L<sup><span style="white-space:nowrap;"><span style="white-space:nowrap;"><span style="white-space:nowrap;">−</span></span></span>1</sup>, followed by a transfer to hormone-free expression medium (MS/2) under light, resulted in a rooting rate of 58.33%. After the gradual weaning of the young plants in a mini-greenhouse, under shade for 3 weeks, 50% of the plants survived. This <em>in vitro</em> regeneration protocol can therefore be adopted for the clonal propagation of adult material of <em>A. senegalensis</em>. However, the rooting rate can be improved by trying other hormonal combinations based on auxins or by considering <em>ex</em>-<em>vitro</em> rooting during shade weaning.
文摘The aim of this work was to study the connection between periodontal diseas of women during their pregnancy and the weight of newborn infants the women gave birth to. Method: It was a case-control study and carried out on the outskirts of Dakar (Senegal). The sample consisted of 129 mothers with infants of weight < 2500 g (case) and 258 mothers with infants of weight ≥ 2500 g (control). The socio-demographic variables, patterns of life, history and outcome of pregnancy were collected. The variables relating to periodontal status included the plaque index, inflammation, bleeding, loss of clinical attachment and pocket depth. Data were analyzed by the R software. Logistic regression had identified associations on the threshold of 5%. Results: The proportions of mothers with periodontitis were 70.6% among cases versus 33% in controls. Periodontitis was significantly associated with low weight (OR = 4 [2.3 - 5.7] 4) adjusted on age, BMI and other periodontal indices. Conclusion: periodontal disease appears to be involved in the occurrence of low birth weight in the African context. The introduction of an oral component in prenatal consultations is therefore necessary for the health of mothers and their children.
文摘Biochemical characterization was carried out on five mango varieties grown in Senegal, two of which are intended for export (Kent and Keitt) and three to local consumption, on the one hand, and to national marketing, on the other. It can be seen that the flavanols composition is between “0.74 ± 0.03 mg/100 g” to “4.70 ± 0.33 mg/100 g” and the total polyphenols composition is “265.83 ± 33.70 mg gallic acid/100 g” to “834.29 ± 25.78 mg gallic acid/100 g”. This analysis shows that the variety Bk is richer in polyphenols followed by the variety Dr then Knt and finally the lowest proportions are noted with the varieties Kt and SL. The analysis of antioxidant activity shows us percentages ranging from “4.16% ± 2.68% inhibition” to “50.21% ± 3.91% inhibition”. It was noted that the SL and Knt varieties give the highest inhibition percentages of “50.21 ± 3.91” and “33.97 ± 0.36” respectively. Variety Bk gives the lowest percentage followed by variety Kt. The Dr variety is the richest in flavonoids “11.75 ± 0.27” followed by the SL variety “11.27 ± 0.10” and the lowest composition is noted in the Knt variety “1.91 ± 0.04”. For total sugars, the most important contents are found in the varieties: Bk “12.71 ± 0.32 mg/100 g” followed by Dr “11.5 ± 0.33 mg/100 g” and SL “9.86 ± 0.06 mg/100 g”. This time the variety Kt stands out with also important proportions. For quantification, there is a slight difference in the values obtained for the different varieties studied. However, the highest values are observed in local varieties: “0.36 ± 0.06 g/100 g” for Bk and Dr followed by SL “0.31 ± 0.01 g/100 g”. The study of the mineral composition shows that the local varieties are the richest and the Knt variety is the poorest. The difference in composition noted within the same variety can be explained by the fact that some varieties have an advanced maturity compared to others.
文摘The African Rice Gall Midge, Orseolia oryzivora H. & G., is an important insect pest recorded in 20 countries in Sub-Sahara Africa. In Burkina Faso, the insect pest particularly prevails in Western and South-Western of the country where both biotic and abiotic conditions favor its development. The insect pest can damage up to 60% of rice tillers in Western Burkina Faso. A study was conducted during the 2011 wet season in the Kou Valley, located 25 km North-West of Bobo-Dioulas- so, Western Burkina Faso. Its objective was to evaluate the damage of this insect pest in farmers’ fields in relation with rice transplanting periods. The Kou Valley rice scheme, 1200 ha, was divided into two zones within which 48 farmers’ fields were randomly selected in relation with rice transplanting periods: P1: 1st period;P2: 2nd period and P3: 3rd period;that is 16 fields per period. Both agronomic and entomological evaluations were performed each week starting from the 21th day after transplanting (DAT) up to 84 DAT. Results showed that the highest average damage level (16% of galls) was recorded in the 3rd transplanting period. The highest larval and pupal parasitism was recorded in P3 at 84 DAT. Pupal parasitism due to Aprostocetus procerae Risbec was higher than larval parasitism due to Platygaster diplosisae Risbec. Lastly, the lowest yield (4.78 t/ha) was recorded in P3. These results can be used in the implementation of an integrated pest management strategy for this insect pest in the Kou Valley.
文摘Rainfall and evapotranspiration are two vital elements for food production under rainfed agriculture. This study aims at investigating the combined changes in these variables in the form of aridly index in the southern Senegal. The temporal trends in annual and monthly (from May to October) aridity index, rainfall and evapotranspiration are examined and adaptation strategies to the vulnerability of rainfed rice cultivation to the changes are developed. The results show a significant decreasing trend in annual rainfall at all study locations for the period 1922-2015. When analyzing the trends in sub-periods, there are two clear patterns in the annual rainfall series: a decreasing trend for the period 1922-1979 and a reversal increasing trend for the period 1980-2015. An increasing trend is also observed in annual reference evapotranspiration. The results reveal that the region will be drier with a significant increase in aridity at the annual and most monthly series. Appropriate adaptation strategies should be implemented to diminish the adverse influence of the increasing aridity on rice productivity for a sustainable agriculture.
文摘Geochemical and Geostatistical tools were used to assess: 1) the chemical quality and, geochemical processes in crystalline rock aquifers in Sabodala (Eastern Senegal) and its surroundings and 2) the impact of mining activities on their quality. A total of 26 water samples collected at boreholes, dug wells and stream, were analyzed to determine major and trace elements concentration focused on elements that represent more threats on human health. Boxplots define chemical characteristics of water for each aquifer formation compared to surface waters. Geostatistical analysis show two sources of water mineralization with regard to major elements: a first natural source characterized by Ca-Mg-HCO3 water type from boreholes and unpolluted surface water and a second group characterized by polluted water by nitrates with Na-NO3-Cl type mainly observed in upper weathered aquifers. However, considering trace element, geostatistical analysis showed three water groups: water with very low trace element concentrations encountered in boreholes and unpolluted surface waters, and waters with relatively high trace element concentrations such as Al observed in areas affected by gold mining activities and finally, polluted waters by Ni, Co, Mn and Cr observed at Sabodala. Results show that in eastern Senegal well waters are vulnerable and often affected by pollution.
文摘The Douta permit of African Star Resources/Thor Explorations, located in the southeast of Senegal, in the Kédougou-Kéniéba Inlier (western part of the West African Craton), is dominated to the East by metasedimentary formations such as greywackes, shales, graphitic shales, quartzites, cherts, claystones and breccias characteristic of the Dialé-Daléma basin. To the West, the mafic formations of the Mako volcanic belt are the most common. Metasedimentary rocks are associated with metavolcanosedimentary terms found at the contact zones between the two (2) Birimian groups. These different geological formations are cut by mafic dolerite and gabbro sills and/or dykes, as well as quartz and microgranite veins. The Douta gold project is crossed from North to South by the MTZ (Main Transcurrent Zone), generally oriented NE-SW and becoming N-S towards the North. The permit is characterized by several shear corridors. The rocks are affected by brittle, brittle-ductile to ductile deformations. The gold mineralization is hosted by a NE-trending shear corridor called the Makosa corridor (Makosa shear zone), therefore sub-parallel to the MTZ. It has a subvertical dip (75˚ to 85˚ to the NW). It is associated with a hydrothermal phase characterized by quartz-sericite-epidote-fine, disseminated pyrite and arsenopyrite ± albite ± chlorite paragenesis. These minerals testify to the existence of a low degree of metamorphism (greenschist facies, epizonal domain) in the area. However, metamorphism reaches amphibolite facies in some places, particularly in the vicinity of intrusive bodies, with the presence of hornblende (amphiboles) and plagioclase. The gold mineralization is mainly hosted by two (2) metasedimentary lithological units: meta-greywackes and shales.
文摘Introduction: Home delivery is still a health problem in Kolda (Senegal). The aim of this work is to study the factors associated with the place of delivery in a situation of free care delivery. Method: A descriptive and analytical cross-sectional study was carried out. Sampling was in two-stage clusters. The study focused on women who gave birth in the last 12months. The data were collected during an individual interview at home. The collection focused on knowledge, attitudes and practices about delivery. Logistic regression was used to explore the determinants of childbirth at the level of health facility. Results: The average age was 25.4 ± 6.5 years. Among the interviewed women, education was reported in 35% of the women and 55% of women estimate that the closest health facility is within 5 km to their home. The time to get to the nearest health facility is less than 15 minutes for 39% of the interviewed women. The prevalence of home delivery was 43.5%. Home delivery was related to the remoteness of the health facility (2.43 [1.75 - 3.37]) but also to incomplete antenatal care (2.52 [1.59 - 4.00]). Support groups highlighted difficulties of access to health facilities because of remoteness. Interviews revealed a lack of involvement of husbands in seeking care for women. Cultural barriers are still there. Conclusions: Despite the gratuity of delivery, the remoteness of health structures and socio-cultural factors are still barriers to access to care for pregnant women. These aspects must be taken into account in health policies. Multi-lateral interventions should be implemented to provide solutions for this health problem.
文摘Introduction: Congenital heart disease (CHD) is a malformation of the heart present at birth and resulting from a developmental defect during embryonic life. The aim was to assess CHD in rural areas. Methodology: This is a retrospective study conducted over a period of 2 years in rural Senegal. Results: During the study period, we collected 79 patients with CHD, representing a hospital prevalence of 2.6%. The mean age at diagnosis was 17.05 months and the sex ratio was 1.19. The mean birth weight was 2826 g. The main comorbidities were anaemia (54.43%) and respiratory infections 38 cases (48.10%). Respiratory distress was the most common sign with 98.73%. Radiological cardiomegaly was noted in 86.7%. The most frequent CHD were interventricular septal defect (IVD) 21.51% and atrial septal defect (ASD) 8.86%. No patient was able to receive surgical treatment. Seven children died (8.86%) and 21 children were lost to follow-up (26.58%). On Doppler echocardiography, 16.45% of the patients had pulmonary arterial hypertension (PAH). Conclusion: In light of this work, emphasis should be placed on the quality of antenatal consultations, the quality of management and the regular availability of echocardiography and a cardio-paediatrician in order to reduce morbidity and mortality.
文摘In Africa, acute rheumatic fever is endemic. Cardiac involvement is one of the most common complications in the form of valvular heart disease representing all damages to the heart valves. It is in this perspective that we realized this study whose general objective was to evaluate the results of mitral repair surgery in children in Senegal and the specific objective was to state the indications for mitral repair surgery and assess the results in terms of morbidity and mortality. This is a retrospective and analytical monocentric study, in the thoracic and cardiovascular surgery department of FANN National University Hospital Center in Dakar. It took place over a period of 30 months. All the patients who underwent mitral surgery, aged less than 18 years were included. The total number of patients was 63, including 39 girls and 24 boys, a sex ratio of 0.62. The average age at the time of the surgery was 12 years old [5 - 17]. The functional symptomatology was dominated by the dyspnea found in all the patients. Cardiac ultrasound was diagnosed with mitral regurgitation in all patients. For all surgical procedures, the approach was a vertical midline sternotomy. The mitral valve was approached by left atriotomy in 40 patients (63.5%) and by transseptal way in 23 patients. All patients had undergone mitral valve repair associated or not with either aortic valve repair in 9 patients (14.2%), aortic valve replacement in 3 patients (4.8%), or one tricuspid valve repair in 31 patients (49%). The average duration of intubation was 6 hours [2 - 52]. The average length of stay in intensive care was 2 days. Postoperative complications have been observed. Surgery was performed in 10 patients with 3 mitral valve replacements, 2 aortic valve replacements, a double mitral and an aortic valve replacement associated with a tricuspid repair and in 4 cases a perfection of their mitral repair. Early and late surgical mortality was zero. The average follow-up time for our patients was 9 months [1 - 26]. During their follow-up, the evolution was favorable in 89% of patients who no longer had any functional symptoms.
文摘The western area of Senegal was the site of a basic volcanism in the Tertiary and Quaternary. That volcanism had caused the formation of alkaline olivine basalts, basanites and nephelinites from microlitic and porphyritic texture to dolerite texture. The geochemistry of major elements shows that the Quaternary basalts are more aluminous and more siliceous, but they contain less magnesium, less iron and less calcium than the Tertiary basalts. Two types of basalt occur here, based on the characteristics of the major elements in the Tertiary lavas: the highly undersaturated basalts of the Cape Verde Peninsula and the slightly undersaturated basalts of the Thiès Plateau. The characteristics of the trace elements reveal shallow interactions due to the contamination and/or assimilation, and to the fractional crystallization, but not due to the heterogeneity of the source. The strong enrichment in light rare earth elements (LREE) and the slight enrichment in heavy rare earth elements (HREE), the anomalies which are negative in K and Pb and positive in Nb, Ta and Eu of the Tertiary and Quaternary basalts of Western Senegal and similar anomalies of the same elements (Pb not analyzed) described in the Cape Verde islands, allow us to establish links between the petrogenetic mechanisms that had caused the formation of the basalts of this Islands and Western Senegal. Moreover, the volcanic activity in Western Senegal (of continental lntraplate type) and that of the Cape Verde Islands (oceanic intraplate type) are probably related to the hot spot located on the vertical of the Cape Verde.
文摘Saba senegalensis is a popular wild fruit;which is consumed as such or transformed into various products. Despite its economic potential, its nutritional potential is unknown. The objective of this study is to characterize its fruits according to Senegal’s main production areas. The study included five samples from five geographical areas of Senegal. Parameters measured include pH, protein, lipids, ash, moisture, vitamin C, carotenoids, polyphenols, minerals, and sugars. The results showed that for moisture, proteins, lipids, pH and reducing sugars did not differ significantly (p 0.05%) for all accessions. Vitamin C content varies between 32.86 and 198.22 mg·100g<sup>-</sup><sup>1</sup>, carotenoids with a content of between 5.05 and 9.12 mg·100g<sup>-</sup><sup>1</sup>;polyphenol contents are between 1.17 and 2.56 g·100g<sup>-</sup><sup>1</sup>. The nutritional value of Saba fruits appears to be homogeneous in Senegal. A thorough study of the functional molecules seems necessary for a better appreciation of the potential of this fruit.
文摘Anthracnose is the one of the most devastating diseases of mango produced in the southern part of Senegal. The field trials against post harvest rot due to anthracnose took place in three orchards over two production seasons, in 2009 and 2010. Three systemic fungicides (thiophanate methyl, azoxystrobin and myclobutanyl) and one contact fungicide (mancozeb) were tested for their efficacy. The first treatments in 2009 took place in the rainy season, while 20% of mangoes on trees exhibited anthracnose lesions. At ripening stage, 100% of fruits from non treated control mango trees were affected by anthracnose and got rotten, while between 73.2% and 80% of mangoes ripened free of disease when treated with thiophanate methyl. With the treatment with azoxystrobin, between 46.6% and 60% of fruits were not infected. Treatment with myclobutanyl was less effective. This level of effectiveness was clearly improved in 2010 by preventive spraying, days ahead of onset of the rainy season, before the appearance of anthracnose symptoms on fruits. The level of effectiveness was higher respectively for thiophanate methyl (between 96% and 100% of fruits not infected) and azoxystrobin (between 84% and 96% of fruits not infected).
文摘Tuberculosis is a major public health problem, especially in developing countries. Neuro-meningeal involvement is rare but represents one of the most severe forms with high morbidity and mortality. We report the case of an ischemic stroke complicating neuromeningeal and pulmonary tuberculosis in a four-month-old infant at the National Hospital Center of children Albert Royer (Senegal). The case was a four-month-old, male infant with no history. His vaccination was up to date according to Senegal’s expanded vaccination program. There was no notion of tuberculosis contagion. He was seen for a prolonged fever for more than a month and chronic cough. He had moderate malnutrition. Neurological examination revealed coma, meningeal syndrome, generalized tonic convulsions and hypertonia. The pupils were in bilateral miosis. Osteotendinous reflexes were abolished with a bilateral Babinski sign. He also had severe respiratory distress, bilateral pulmonary condensation syndrome. Brain computed tomography was in favor of an ischemic stroke. The test GeneXpert MTB/RIF was positive on cerebrospinal fluid and gastric tubing fluid. The curative treatment was based on a quadruple therapy based on rifampicin, isoniazid, pirazinamide and ethambutol. The evolution was unfavorable with the death of the patient.
文摘Introduction: Cervical cancer is preventable through vaccination against papillomaviruses and screening for precancerous lesions. The objective of this study was to determine the frequency of screening practice and to identify associated factors. Methods: This was a cross-sectional descriptive and analytical study. Data were collected from individual interviews during household surveys. Data collection took place from (1st</sup>) to (30th</sup>) September (2021). The following were explored: socio-demographic characteristics, knowledge, attitudes and practices of women regarding screening. Results: A total of (294) women aged between (18) and (69) years were included. The mean age was (35.79) years (±9.81). The median age was (34) years. The frequency of screening was (16%);that of precancerous lesions was (4.26%). Factors statistically and significantly associated with screening uptake were cervical cancer information (OR = 5.42 (1.27 - 23.16);p = 0.003), knowledge of the availability of screening (ORa = 7.73 (3.01 - 18.51);p - 7.31);p = 0.014). Conclusion: Frequency of pre-cancerous lesions of cervical cancer is high in Koumpentoum health district (4.26%), while the practice of screening is low there (16%). The factors associated with this low performance are related to a lack of adequate knowledge of women about cervical cancer.
文摘Objectives: This work was carried out in order to determine the profile of different HPV genotypes in a population of women attending radiotherapy (RT). Material and Methods: This is a retrospective study. Sixty paraffin blocks were chosen by simple random method upon 1015 blocks of cervix cancer diagnosed in Senegal’s public hospitals laboratories of anatomopathology. The strains of HPV genotyping were done with polymerase chain reaction (PCR) multiplex using primers MY09-MY11, GP5+ and GP6+. Results: Among the sixty examined blocks, DNA extraction was unsatisfactory in three cases. All women were infected with HPV high risk (HR). The different HPV genotypes isolated were HPV 16 (49/96%), 18 (8/16%), 35 (7/14%), 45 (4/8%), and 58 (2/4%). It was a single infection in 36 cases (70, 60%), co-infection in 11 cases (21, 60%) and a multi-infection in 4 cases (7, 80%). Conclusion: The prevalence of HPV found in our series is comparable to that found in the world. To complete this study, a large population of Senegalese patients with uterine cervix cancer (CC) and HPV genotype, is needed to determine if HPV genotypes could be considered as a prognostic marker in patients with uterine CC after RT.
