The study examined flora decline in a peri-urban settlement （Ijetm Lukosi village in Abeokuta, Nigeria） and the consequent poverty trap in the village. Respondents were selected by simple random sampling （SRS） wit...The study examined flora decline in a peri-urban settlement （Ijetm Lukosi village in Abeokuta, Nigeria） and the consequent poverty trap in the village. Respondents were selected by simple random sampling （SRS） with a total of 90 respondents selected, cutting across different age groups and occupations. Ijeun Lukosi village is a stone throw from a Government Secretariat with influx of government employees. The status of flora in the village revealed 34 species of trees and shrubs, 36 species of herbs and climbers and 12 species of aquatic plants. Thirty-two families of plants were identified showing the diversity of flora species in the settlement. An influx of people into the settlement changed the pattern of land tenure system from communal and family inheritance to personal ownership of land. This change in land ownership status promoted the destruction of the diversity of loacal flora under private prop- erty development. This impacted negatively on the livelihood of respondents. The poverty line was determined to be NAD 2,600 （$17.33） per month, a condition categorized by the World Bank as abject poverty. Over 51% of farming respondents were displaced, including 20% entrepreneurs （artisans） trading in trado-medical herbs derived from the diversity in the flora. The conclusion is drawn that abject poverty encouraged the destruction of flora diversity in the settlement with the poverty trap turning into a cycle and the perpetuation of poverty in the village. It is recommended that the government should put in place programs to alleviate poverty in this and similar areas to protect flora diversity and consequently protect the environment, thereby ensuring the sustenance of rural liveli- hood.展开更多
Objective To explore the pharmacodynamic mechanism of Fu Zi Li Zhong Decoction(FZLZD)in treating gastric ulcer and its effect on gastrointestinal microecology.Methods Rat gastric ulcer model was established by continu...Objective To explore the pharmacodynamic mechanism of Fu Zi Li Zhong Decoction(FZLZD)in treating gastric ulcer and its effect on gastrointestinal microecology.Methods Rat gastric ulcer model was established by continuous vinegar gavage.The experiment included normal group,model group,ranitidine group and FZLZD group.The animals were handled after intragastricing administration of corresponding clinical isodose drugs for 7 d.The rats’gastrointestinal histopathology was observed by HE staining.The expression of ZO-1 and Occludin mRNA in rat gastric tissue was detected by RT-PCR.The diversity of intestinal flora was analyzed by 16SrDNA sequencing.Results FZLZD can effectively improve gastric mucosal destruction,epithelial exfoliation,inflammatory cell infiltration,inflammatory substance exudation and edema in rats with gastric ulcer.FZLZD can effectively up-regulate the expression levels of ZO-1 and Occludin mRNA in gastric tissue of rats with gastric ulcer.The results of intestinal flora diversity showed that the diversity of intestinal flora in FZLZD group was significantly higher than that of model group.Conclusions FZLZD can regulate gastric ulcer by promoting the expression of ZO-1 and Occludin and improving the diversity of intestinal flora.展开更多
Hainan and Guangdong provinces,located in north tropical area and south subtropical area of China respectively,bear one of the highest levels of biodiversity in China.The modern floras of Hainan and Guangdong are domi...Hainan and Guangdong provinces,located in north tropical area and south subtropical area of China respectively,bear one of the highest levels of biodiversity in China.The modern floras of Hainan and Guangdong are dominated by pantropical and tropical-subtropical taxa and many of their representative families appeared as early as in the Eocene[1].The Eocene,therefore,represents a crucial stage in the formation of the extant flora.However,previously the Eocene floras and vegetation were largely studied in mid-展开更多
文摘The study examined flora decline in a peri-urban settlement （Ijetm Lukosi village in Abeokuta, Nigeria） and the consequent poverty trap in the village. Respondents were selected by simple random sampling （SRS） with a total of 90 respondents selected, cutting across different age groups and occupations. Ijeun Lukosi village is a stone throw from a Government Secretariat with influx of government employees. The status of flora in the village revealed 34 species of trees and shrubs, 36 species of herbs and climbers and 12 species of aquatic plants. Thirty-two families of plants were identified showing the diversity of flora species in the settlement. An influx of people into the settlement changed the pattern of land tenure system from communal and family inheritance to personal ownership of land. This change in land ownership status promoted the destruction of the diversity of loacal flora under private prop- erty development. This impacted negatively on the livelihood of respondents. The poverty line was determined to be NAD 2,600 （$17.33） per month, a condition categorized by the World Bank as abject poverty. Over 51% of farming respondents were displaced, including 20% entrepreneurs （artisans） trading in trado-medical herbs derived from the diversity in the flora. The conclusion is drawn that abject poverty encouraged the destruction of flora diversity in the settlement with the poverty trap turning into a cycle and the perpetuation of poverty in the village. It is recommended that the government should put in place programs to alleviate poverty in this and similar areas to protect flora diversity and consequently protect the environment, thereby ensuring the sustenance of rural liveli- hood.
基金funding support from the National Natural Science Foundation of China (No. 81973670 and No. 81503445)Hunan Provincial Natural Science Foundation of China (No. 2016JJ2095)Hunan Province College Students Research Learning and Innovative Experiment Project (No. 2018-412)
文摘Objective To explore the pharmacodynamic mechanism of Fu Zi Li Zhong Decoction(FZLZD)in treating gastric ulcer and its effect on gastrointestinal microecology.Methods Rat gastric ulcer model was established by continuous vinegar gavage.The experiment included normal group,model group,ranitidine group and FZLZD group.The animals were handled after intragastricing administration of corresponding clinical isodose drugs for 7 d.The rats’gastrointestinal histopathology was observed by HE staining.The expression of ZO-1 and Occludin mRNA in rat gastric tissue was detected by RT-PCR.The diversity of intestinal flora was analyzed by 16SrDNA sequencing.Results FZLZD can effectively improve gastric mucosal destruction,epithelial exfoliation,inflammatory cell infiltration,inflammatory substance exudation and edema in rats with gastric ulcer.FZLZD can effectively up-regulate the expression levels of ZO-1 and Occludin mRNA in gastric tissue of rats with gastric ulcer.The results of intestinal flora diversity showed that the diversity of intestinal flora in FZLZD group was significantly higher than that of model group.Conclusions FZLZD can regulate gastric ulcer by promoting the expression of ZO-1 and Occludin and improving the diversity of intestinal flora.
基金supported by the National Natural Science Foundation of China (41210001)performed within the framework of the State Program(Geological Institute, Russian Acad. Sci. - AH, TK) (0135-2016-0001)partly supported by the Russian Foundation for Basic Research(15-55-53019,17-5453069)
文摘Hainan and Guangdong provinces,located in north tropical area and south subtropical area of China respectively,bear one of the highest levels of biodiversity in China.The modern floras of Hainan and Guangdong are dominated by pantropical and tropical-subtropical taxa and many of their representative families appeared as early as in the Eocene[1].The Eocene,therefore,represents a crucial stage in the formation of the extant flora.However,previously the Eocene floras and vegetation were largely studied in mid-
