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Evaluation of the Safety and Efficacy of Extracts from the Leaves of Five Plants Used for the Treatment of Arterial Hypertension in Benin

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Pharmacology & Pharmacy 2022年第10期13卷 355-367页

作者： Omédine Koukoui Santorin Seton mansouratou betira Jean Baptiste Amagbegnon Fidèle Sonounameto Eudoxie Assou Alphonse Sezan Laboratory of Animal Physiology Cellular Signaling and Pharmacology ENSBBA/UNSTIM Dassa Zoumè Benin Laboratory of Pharmacology and Improved Traditional Medicines FAST/University of Abomey-Calavi Godomey Benin

Cardiovascular diseases (CVD) are nowadays real health problems in the world. High blood pressure is one of the most important risk factors for CVD and is affecting more and more people in Benin. The objective of our work is to evaluate the safety and the efficacy of the leaves of five plants used for the treatment of hypertension in Benin. Acute toxicity was evaluated on wistar rats which orally administered a single dose of 2000 mg/kg of body weight of hydro-ethanolic extract of the leaves of Phyllanthus amarus Schumach. & Thonn., Persea americana MILL., Ipomoaea fistulosa Mart. ex Choisy., Heliotropium indicum L., Schrankia leptocarpa DC., and were monitored over a period of 14 days. Subacute toxicity was evaluated on rats which received a daily dose of 200 mg/kg of body weight of the plant leaf extract over a period of 28 days. Plant efficacy was assessed by measuring potassium in plant leaves. Administration of the single dose of the extract did not cause any deaths in rats;the weight of the rats varied depending on the extracts administered. Concerning the subacute treatment, the levels of aspartate amino transaminases (AST) and Alanine amino transaminases (AST) did not vary significantly after the 28 days of treatment with the different extracts. On the other hand, a significant increase in serum creatinine was observed in rats treated with extracts of Phyllanthus amarus. The leaves of Heliotropium indicum, Ipomoaea fistulosa and Phyllanthus amarus contain the highest levels of potassium. Among the five plants studied, only the leaves of Phyllanthus amarus seem to induce renal toxicity. Extracts from the leaves of Heliotropium indicum, Ipomoaea fistulosa might be the most effective in inducing hypotensive activity and do not show toxicity.

关键词： Hypertension Plant Extracts Toxicity Efficacy Potassium

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Evaluation of the Preventive and Therapeutic Activities of <i>Tridax procumbens</i>against Hyperglycemia and Hyperlipidemia Induced in Wistar Rats

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Pharmacology & Pharmacy 2021年第7期12卷 127-140页

作者： Jean-Baptiste Amagbegnon Omédine Koukoui Pascal C. Agbangnan Santorin Seton mansouratou betira Sedami Medegan Laura Loko Victorin Dougnon Luc Djogbenou Alphonse Sezan Laboratory of Animal Physiology Cellular Signalisation and Pharmacology University of Sciences Technologies Engineering and Mathematics Dassa Zoume Benin Laboratory of Study and Research in Applied Chemistry Unity of Research and Molecular Interactions (URIM/LERCA/UAC) Cotonou Benin Medicinal and Organic Chemistry Laboratory Faculty of Health Sciences Cotonou Benin Laboratory of Applied Entomology University of Sciences Technologies Engineering and Mathematics Dassa Zoume Benin Research Unit in Applied Microbiology and Pharmacology of Natural Substances Research Laboratory for Applied Biology Polytechnic School of Abomey-Calavi University of Abomey-Calavi Abomey-Calavi Benin Laboratory of Infectious Vector Borne Diseases Regional Institute of Public Health University of Abomey-Calavi Abomey-Calavi Benin Laboratory of Biomembranes and Cellular Signalisation University of Abomey-Calavi Cotonou Benin

From the Asteraceaes family, Tridax procumbens is a wild species frequently found in fields, meadows and roadsides. It is traditionally used to treat yellow fever, typhoid fever, high blood pressure and diabetes. In this work we used the hydro-ethanolic extract of the leaves and stems of the plant and also the fractions of this extract to determine the preventive and therapeutic activities of the plant against obesity, hyperglycemia and hyperlipidemia. The yields of the fractions obtained by decantation of the hydro-ethanolic extract are respectively 0.160% with hexane, 0.073% with dichloromethane, 0.09% with diethyl ether and 0.150% with ethyl acetate. Hyperglycemia and hyperlipidemia were induced in the rats submitted to a fatty and sweet diet for 28 days. Our results showed a significant increase in glycemia, weight and triglyceride level in rats that were subjected to the diet. On the other hand, the rats treated with the dose of 500 mg/kg of body weight of Tridax procumbens extract during the induction showed a reduction in weight gain and an absence of increase in blood sugar and triglyceride levels. The ethyl acetate fraction of Tridax procumbens extract administered to fatty and hyperglycemic rats at 50 mg/kg of body weight for 14 days did not induce change in the blood sugar and triglycerides level of fatty and hyperglycemic rats. If it seems obvious that the extract of Tridax procumbens prevents hyperglycemia and hyperlipidemia, the ethyl acetate fraction does not seem to have a therapeutic effect.

关键词： Tridax procumbens Prevention Treatment Hyperglycemia Hyperlipidemia

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Analysis of Cardiovascular Risk Factors in Hypertensive Farmers and Non-Farmers in the Zou Region of Central Benin

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Journal of Biosciences and Medicines 2023年第12期11卷 362-375页

作者： Fidele Sonounameto Marcelin Agbo Colette Azandjeme Santorin Seton mansouratou betira Jean-Baptiste Amagbegnon Fresnel Cachon Maximin Senou Casmir Akpovi Alphonse Sezan Camille Dossou Lamine Baba-Moussa Joachim Gbenou Omedine Koukoui Laboratory of Research in Medical and Pharmaceutic Biotechnology (LaRBiMeP) Research Unit of Animal Physiology Cell Signaling and Pharmacology (U-PASCPharm) ENSBBA/UNSTIM Dassa-Zoumé Benin Department of Health Promotion IRSP/UAC Ouidah Benin Laboratory of Research in Medical and Pharmaceutic Biotechnology (LaRBiMeP) Unit of Experimental and Clinical Biology (U-BEC) ENSBBA/UNSTIM Dassa-Zoumé Benin Laboratory of Applied Biology Research Research Unit on Non-Communicable Diseases and Cancer EPAC/UAC Cotonou Benin Laboratory of Pharmacology and Improved Traditional Medicines Department of Animal Physiology FAST/UAC Cotonou Benin Laboratory of Molecular Biology and Typing in Microbiology Department of Biochemistry and Cell Biology FAST/UAC Abomey Calavi Benin Laboratory of Pharmacognosy and Essential Oils FAST/UAC Cotonou Benin

The heavy use of chemicals, pesticides, cosmetics and plastic packaging coincides with a resurgence of cardiovascular disease, in particular hypertension, which is affecting younger and younger populations. The aim of this study was to analyze the cardiovascular risk factors in hypertensive farmers compared with hypertensive non farmers. This was a prospective case-control study that included 239 hypertensive farmers and non farmers aged 25 to 65 with blood pressure ≥ 140 mmHg and 90 mmHg. Hypertensive farmers (101) represented 42.25% of the population versus hypertensive non farmers (138) 57.74%. The median ages were 47 ± 11.3 years for farmers and 51.45 ± 9.77 years for non farmers. Biochemical analysisand screening for major cardiovascular disease risk factors such as metabolic syndrome were performed. Metabolic syndrome was defined according to the new definition of the International Diabetes Federation. Our results revealed higher blood glucose levels in farmers (47.77%) than in non farmers (27.20%) (p = 0.0132). Dyslipidemia was more frequent in non farmerswith high level of LDL cholesterol and total cholesterol. Farmers presented a high level of tryglycerides. The prevalence of obesity was higher in non farmers 51 (36.96%) than farmers 18 (17.82%). The prevalence of metabolic syndrome was 106 (44.35%) in our study population. There was not an important difference between farmers (39.60%) and non farmers (47.82%). However, the variation of metabolic syndrome according to age and sex showed a higher prevalence in young male farmers aged 25 to 45 whereas non farmers presented an increasing prevalence of metabolic syndrome according to age and the absence of metabolic syndrome between age 25 and 35. Our results showed that the cardiovascular risk appeared early in young farmers compared with non farmers suggesting a possible role of pesticides in the onset of this risk.

关键词： Chemicals Farmers Metabolic Syndrome Hypertension

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Evaluation of the Safety and Efficacy of Extracts from the Leaves of Five Plants Used for the Treatment of Arterial Hypertension in Benin

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Pharmacology & Pharmacy（药理与制药） 2022年第10期

作者： omédine koukoui santorin seton mansouratou betira jean baptiste amagbegnon fidèle sonounameto eudoxie assou alphonse sezan

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