Aims and objectives: The frequent and unprescribed use of antibiotics has led to the development of resistance by microorganisms responsible for urinary tract infection (UTI). In order to facilitate the follow-up of t...Aims and objectives: The frequent and unprescribed use of antibiotics has led to the development of resistance by microorganisms responsible for urinary tract infection (UTI). In order to facilitate the follow-up of this microbial resistance, the aim of this study was to determine the bacteria resistant phenotypes. Method: To achieve the following objectives, this study was conducted from June to August 2023. The isolation and identification were performed by standard methods why susceptibility testing was done by Kirby-Bauer disk diffusion technique according to CLSI guidelines. Double-disk synergy test was applied to determine the presence of extended-spectrum β-lactamase (ESBL) produced by bacteria. The Imipenem EDTA Combined Disc Test (CDT) for Metallo beta lactamase (MBL) screening, the D-zone test to detect macrolides, lincosamides and streptogramins type B (MLSB) and Meticillin resistant Staphylococcus aureus (MRS A) which was assessed using a Cefoxitin (30 µg) disc. Results: A total of 40 bacteria were identified with a prevalence of 37.03%. Overall, E. coli was the predominant isolate 14 (35%), followed by Staphylococcus aureus 10 (25%) and Klesbsiella pneumonia 4 (10%). Pseudomonas aeruginosa, Salmonella arinosa and Enterobacter were the most sensible (100%) bacteria against ciprofloxin, ceftriaxone and cefixime. Almost all bacteria were resistant to Amoxicillin/clavulanic acid (>50%). The isolates were in the majority resistant to imipenem. ESBL-producing Enterobacteriaceae represented 25.92%, with a higher rate among E. coli. No MBL production was found among the isolates while 38.46% represented cMLSB, 15.38% represented iMLSB, 23.07% represented MSB and 23.07% represented MRSA. Conclusion: Clinical strains of UTI from Protestant Hospital of Ngaoundere exhibiting ESBL, cMLSB, iMLSB, MSB and MRSA. The regular updating of antibiotic resistance statistics of isolated strains allows for a better adaptation of probabilistic antibiotic therapy.展开更多
We aimed to investigate the potential pathogenic profile and antibiotic resistance of Listeria monocytogenes isolated from ready-to-eat food in China.Antimicrobial resistance was determined by broth microdilution foll...We aimed to investigate the potential pathogenic profile and antibiotic resistance of Listeria monocytogenes isolated from ready-to-eat food in China.Antimicrobial resistance was determined by broth microdilution following the Clinical and Laboratory Standards Institute protocol Molecular serotyping,virulence,and resistance genes were identified using PCR.Multi-locus展开更多
<b><span style="font-family:Verdana;">Background:</span></b><span style="font-family:""><span style="font-family:Verdana;"> The increasing phenome...<b><span style="font-family:Verdana;">Background:</span></b><span style="font-family:""><span style="font-family:Verdana;"> The increasing phenomenon of bacterial resistance to antibiotics is a real public health problem. The main causes are poor management of hygiene and water quality, but also the use of antibiotics without precaution. The objective of this study was to isolate and determine the antibiotic resistance profile of the different bacteria found in the main hospitals and bacteriology laboratories in Gabon. </span><b><span style="font-family:Verdana;">Methods:</span></b><span style="font-family:Verdana;"> 6034 samples were taken from hospitals in seven main cities of Gabon, and analyzed according to the usual techniques. The pathogenic strains were identified by Matrix-Assisted Laser Desorption Ionization-Time Of Flight Mass Spectrometry. Antimicrobial susceptibility testing was performed by the agar disc diffusion method, according to the Antibiogram Committee of the French Society for Microbiology guidelines. </span><b><span style="font-family:Verdana;">Results: </span></b><span style="font-family:Verdana;">974 pathogenic bacterial strains were found, including 890/974 (91</span><span style="font-family:Verdana;">.4%) Gram-negative bacilli. The systematic antimicrobial suscepti</span><span style="font-family:Verdana;">bility testings identified 160/974 (16.4%) multi-resistant strains. </span><i><span style="font-family:Verdana;">Escherichia coli</span></i><span style="font-family:Verdana;"> was t</span><span style="font-family:Verdana;">he most represented species. 12.5%</span></span><span style="font-family:""> </span><span style="font-family:Verdana;">-</span><span style="font-family:""> </span><span style="font-family:""><span style="font-family:Verdana;">25% of </span><i><span style="font-family:Verdana;">Escherichia coli</span></i><span style="font-family:Verdana;">, </span><i><span style="font-family:Verdana;">Klebsiel</span></i></span><i><span style="font-family:Verdana;">la pneumoniae</span></i><span style="font-family:""><span style="font-family:Verdana;">, </span><i><span style="font-family:Verdana;">Enterobacter cloacae</span></i><span style="font-family:Verdana;">, and </span><i><span style="font-family:Verdana;">Citrobacter sedlakii</span></i><span style="font-family:Verdana;"> strains were resistant to amoxicillin + clavulanic acid, third and fourth generation cephalosporins. Aminoglycoside resistance rates of 8.5%</span></span><span style="font-family:""> </span><span style="font-family:Verdana;">-</span><span style="font-family:""> </span><span style="font-family:""><span style="font-family:Verdana;">19% were also noted. 4.5% to 25% of the bacteria found were resistant to quinolones and cotrimoxazole. Resistance rates to carbapenems ranged from 1% to 10.5%. 16% of </span><i><span style="font-family:Verdana;">Staphylococcus aureus</span></i><span style="font-family:Verdana;"> were methicillin-resistant (MRSA). Rates of extended spectr</span><span style="font-family:Verdana;">um beta-lactamase-producing enterobacteriaceae (ESBL-PE) ran</span><span style="font-family:Verdana;">ged from 2.5% to 25%. </span><b><span style="font-family:Verdana;">Conclusion:</span></b><span style="font-family:Verdana;"> This study showed an increasing evolution of bacteri</span><span style="font-family:Verdana;">al resistance to antibiotics that </span></span><span style="font-family:Verdana;">are</span><span style="font-family:Verdana;"> spreading throughout Gabon. Th</span><span style="font-family:Verdana;">is constitutes a threat to the health of Gabonese population.展开更多
Urinary tract infections are among the most prevalent extra-intestinal infections, with high prevalence globally. This cross-sectional study established prevalence of bacterial aetiology causing urinary tract infectio...Urinary tract infections are among the most prevalent extra-intestinal infections, with high prevalence globally. This cross-sectional study established prevalence of bacterial aetiology causing urinary tract infection (UTI) and their antimicrobial susceptibility profiles. A questionnaire was used to capture socio-demographic data and possible UTI risk factors among the 206 consented adults seeking medicare at Kiambu Level 5 Hospital. The collected midstream urine samples were subjected to dipstick analysis, microscopy and culture for UTI diagnosis. <b>Results:</b> The overall prevalence rate of UTIs was 27.6%, with women’s prevalence rate being significantly higher at 80.7% compared to men 19.2%. Pregnant women had UTI prevalence at 34% which was higher than other sets of participants. Women who did not frequently change their underpants daily had a higher UTI cases at 34.8%. <i>Escherichia coli</i>, <i>Staphylococcus aureus</i> and <i>Klebsiella pneumoniae</i> were the most prevalent bacterial pathogens at 38.5%, 21% and 19.3%, respectively. Antimicrobial sensitivity analysis revealed high resistances towards Sulfamethoxazole and Ampicillin at range between 50% - 85%, suggesting that these drugs are no longer effective for UTI empirical treatment. The resistance patterns towards Cefotaxime, Cefepime and Ciprofloxacin were below 40%. However, more resistance patterns at a range between 14% - 40% revealed towards Amoxicillin-clavulanic and Nitrofurantoin imply that these are drugs remain potent but there is the need to revise the current UTI management guidelines. In addition, to elude treatment failure, innovation of prophylactic measures is key to halt UTI contraction and offer support to pharmaceutical industries that have fewer new antibiotics in the pipeline.展开更多
Introduction:Aeromonas is widely distributed in aquatic environments.This study describes the pathogenic characteristics of Aeromonas isolated from adult diarrhea patients and aquatic environments in Beijing,China.Met...Introduction:Aeromonas is widely distributed in aquatic environments.This study describes the pathogenic characteristics of Aeromonas isolated from adult diarrhea patients and aquatic environments in Beijing,China.Methods:Aeromonas isolates from patients with diarrhea and river water samples were assessed using whole-genome sequencing(WGS)and antibiotic resistance profiling.Results:In total,38 Aeromonas isolates were collected.Among these,13 isolates were from patients with common clinical symptoms,including diarrhea,abdominal pain,and nausea.Four of 13 Aeromonaspositive patients were co-infected with other intestinal pathogens.Patient-derived Aeromonas isolates showed high resistance to ampicillin,ampicillin-sulbactam,nalidixic acid,and tetracycline,whereas water-derived isolates showed high resistance to ampicillin,ampicillin-sulbactam,and nalidixic acid.Phylogenetic analysis revealed seven independent branches,without significant clustering among patient-and water-derived isolates.Conclusions:This study provides valuable insights into the prevalence and characteristics of Aeromonas.The intertwined distribution of patient-and waterderived isolates in the phylogenetic tree deserves attention.展开更多
文摘Aims and objectives: The frequent and unprescribed use of antibiotics has led to the development of resistance by microorganisms responsible for urinary tract infection (UTI). In order to facilitate the follow-up of this microbial resistance, the aim of this study was to determine the bacteria resistant phenotypes. Method: To achieve the following objectives, this study was conducted from June to August 2023. The isolation and identification were performed by standard methods why susceptibility testing was done by Kirby-Bauer disk diffusion technique according to CLSI guidelines. Double-disk synergy test was applied to determine the presence of extended-spectrum β-lactamase (ESBL) produced by bacteria. The Imipenem EDTA Combined Disc Test (CDT) for Metallo beta lactamase (MBL) screening, the D-zone test to detect macrolides, lincosamides and streptogramins type B (MLSB) and Meticillin resistant Staphylococcus aureus (MRS A) which was assessed using a Cefoxitin (30 µg) disc. Results: A total of 40 bacteria were identified with a prevalence of 37.03%. Overall, E. coli was the predominant isolate 14 (35%), followed by Staphylococcus aureus 10 (25%) and Klesbsiella pneumonia 4 (10%). Pseudomonas aeruginosa, Salmonella arinosa and Enterobacter were the most sensible (100%) bacteria against ciprofloxin, ceftriaxone and cefixime. Almost all bacteria were resistant to Amoxicillin/clavulanic acid (>50%). The isolates were in the majority resistant to imipenem. ESBL-producing Enterobacteriaceae represented 25.92%, with a higher rate among E. coli. No MBL production was found among the isolates while 38.46% represented cMLSB, 15.38% represented iMLSB, 23.07% represented MSB and 23.07% represented MRSA. Conclusion: Clinical strains of UTI from Protestant Hospital of Ngaoundere exhibiting ESBL, cMLSB, iMLSB, MSB and MRSA. The regular updating of antibiotic resistance statistics of isolated strains allows for a better adaptation of probabilistic antibiotic therapy.
文摘We aimed to investigate the potential pathogenic profile and antibiotic resistance of Listeria monocytogenes isolated from ready-to-eat food in China.Antimicrobial resistance was determined by broth microdilution following the Clinical and Laboratory Standards Institute protocol Molecular serotyping,virulence,and resistance genes were identified using PCR.Multi-locus
文摘<b><span style="font-family:Verdana;">Background:</span></b><span style="font-family:""><span style="font-family:Verdana;"> The increasing phenomenon of bacterial resistance to antibiotics is a real public health problem. The main causes are poor management of hygiene and water quality, but also the use of antibiotics without precaution. The objective of this study was to isolate and determine the antibiotic resistance profile of the different bacteria found in the main hospitals and bacteriology laboratories in Gabon. </span><b><span style="font-family:Verdana;">Methods:</span></b><span style="font-family:Verdana;"> 6034 samples were taken from hospitals in seven main cities of Gabon, and analyzed according to the usual techniques. The pathogenic strains were identified by Matrix-Assisted Laser Desorption Ionization-Time Of Flight Mass Spectrometry. Antimicrobial susceptibility testing was performed by the agar disc diffusion method, according to the Antibiogram Committee of the French Society for Microbiology guidelines. </span><b><span style="font-family:Verdana;">Results: </span></b><span style="font-family:Verdana;">974 pathogenic bacterial strains were found, including 890/974 (91</span><span style="font-family:Verdana;">.4%) Gram-negative bacilli. The systematic antimicrobial suscepti</span><span style="font-family:Verdana;">bility testings identified 160/974 (16.4%) multi-resistant strains. </span><i><span style="font-family:Verdana;">Escherichia coli</span></i><span style="font-family:Verdana;"> was t</span><span style="font-family:Verdana;">he most represented species. 12.5%</span></span><span style="font-family:""> </span><span style="font-family:Verdana;">-</span><span style="font-family:""> </span><span style="font-family:""><span style="font-family:Verdana;">25% of </span><i><span style="font-family:Verdana;">Escherichia coli</span></i><span style="font-family:Verdana;">, </span><i><span style="font-family:Verdana;">Klebsiel</span></i></span><i><span style="font-family:Verdana;">la pneumoniae</span></i><span style="font-family:""><span style="font-family:Verdana;">, </span><i><span style="font-family:Verdana;">Enterobacter cloacae</span></i><span style="font-family:Verdana;">, and </span><i><span style="font-family:Verdana;">Citrobacter sedlakii</span></i><span style="font-family:Verdana;"> strains were resistant to amoxicillin + clavulanic acid, third and fourth generation cephalosporins. Aminoglycoside resistance rates of 8.5%</span></span><span style="font-family:""> </span><span style="font-family:Verdana;">-</span><span style="font-family:""> </span><span style="font-family:""><span style="font-family:Verdana;">19% were also noted. 4.5% to 25% of the bacteria found were resistant to quinolones and cotrimoxazole. Resistance rates to carbapenems ranged from 1% to 10.5%. 16% of </span><i><span style="font-family:Verdana;">Staphylococcus aureus</span></i><span style="font-family:Verdana;"> were methicillin-resistant (MRSA). Rates of extended spectr</span><span style="font-family:Verdana;">um beta-lactamase-producing enterobacteriaceae (ESBL-PE) ran</span><span style="font-family:Verdana;">ged from 2.5% to 25%. </span><b><span style="font-family:Verdana;">Conclusion:</span></b><span style="font-family:Verdana;"> This study showed an increasing evolution of bacteri</span><span style="font-family:Verdana;">al resistance to antibiotics that </span></span><span style="font-family:Verdana;">are</span><span style="font-family:Verdana;"> spreading throughout Gabon. Th</span><span style="font-family:Verdana;">is constitutes a threat to the health of Gabonese population.
文摘Urinary tract infections are among the most prevalent extra-intestinal infections, with high prevalence globally. This cross-sectional study established prevalence of bacterial aetiology causing urinary tract infection (UTI) and their antimicrobial susceptibility profiles. A questionnaire was used to capture socio-demographic data and possible UTI risk factors among the 206 consented adults seeking medicare at Kiambu Level 5 Hospital. The collected midstream urine samples were subjected to dipstick analysis, microscopy and culture for UTI diagnosis. <b>Results:</b> The overall prevalence rate of UTIs was 27.6%, with women’s prevalence rate being significantly higher at 80.7% compared to men 19.2%. Pregnant women had UTI prevalence at 34% which was higher than other sets of participants. Women who did not frequently change their underpants daily had a higher UTI cases at 34.8%. <i>Escherichia coli</i>, <i>Staphylococcus aureus</i> and <i>Klebsiella pneumoniae</i> were the most prevalent bacterial pathogens at 38.5%, 21% and 19.3%, respectively. Antimicrobial sensitivity analysis revealed high resistances towards Sulfamethoxazole and Ampicillin at range between 50% - 85%, suggesting that these drugs are no longer effective for UTI empirical treatment. The resistance patterns towards Cefotaxime, Cefepime and Ciprofloxacin were below 40%. However, more resistance patterns at a range between 14% - 40% revealed towards Amoxicillin-clavulanic and Nitrofurantoin imply that these are drugs remain potent but there is the need to revise the current UTI management guidelines. In addition, to elude treatment failure, innovation of prophylactic measures is key to halt UTI contraction and offer support to pharmaceutical industries that have fewer new antibiotics in the pipeline.
基金Supported by the National Key Research Program of China(2021YFF0703801).
文摘Introduction:Aeromonas is widely distributed in aquatic environments.This study describes the pathogenic characteristics of Aeromonas isolated from adult diarrhea patients and aquatic environments in Beijing,China.Methods:Aeromonas isolates from patients with diarrhea and river water samples were assessed using whole-genome sequencing(WGS)and antibiotic resistance profiling.Results:In total,38 Aeromonas isolates were collected.Among these,13 isolates were from patients with common clinical symptoms,including diarrhea,abdominal pain,and nausea.Four of 13 Aeromonaspositive patients were co-infected with other intestinal pathogens.Patient-derived Aeromonas isolates showed high resistance to ampicillin,ampicillin-sulbactam,nalidixic acid,and tetracycline,whereas water-derived isolates showed high resistance to ampicillin,ampicillin-sulbactam,and nalidixic acid.Phylogenetic analysis revealed seven independent branches,without significant clustering among patient-and water-derived isolates.Conclusions:This study provides valuable insights into the prevalence and characteristics of Aeromonas.The intertwined distribution of patient-and waterderived isolates in the phylogenetic tree deserves attention.
