Cowpea is a vegetable that contributes to food security in Guinea. Despite its importance, more than 30% of its production is lost between harvesting, storage and consumption. The main cowpea pest is Callosobruchus ma...Cowpea is a vegetable that contributes to food security in Guinea. Despite its importance, more than 30% of its production is lost between harvesting, storage and consumption. The main cowpea pest is Callosobruchus maculatus. The commonly used control strategy is essentially based on chemicals whose use is toxic, expensive and restrictive. In the search for alternatives to chemical control, this work was undertaken to evaluate the insecticidal potential of Ageratum conyzoid leaf powders and Securidaca longepedunculata roots. Powder toxicity and insecticidal efficacy tests were performed separately on groups of 20 Callosobruchus maculatus using 3 doses of Ageratum conyzoid leaf powders and Securidaca longepedunculata roots in jars each containing 100 g cowpea. The mortality of Callosobruchus maculatus and the impact of powders were noted respectively for 96 h and 4 months after infestation. The germination capacity of the treated seeds was assessed at the start of the study. Doses of 1 and 8 g of Ageratum conyzoides leaf powders and Securidaca longepedunculata roots were applied respectively to every 100 g of cowpea and led to 100% mortality of Callosobruchus maculatus. At these same doses, more than half of the treated seeds were attacked during the 4 months of storage. Germination tests have shown that powders of Ageratum conyzoides leaves and roots of Securidaca longepedunculata have no negative effect on the germination power of cowpea seeds. Therefore, they could be considered as excellent bio-insecticides that socio-professional strata (farmers and warehouse workers) can use in the fight against cowpea insects intended for storage.展开更多
Objective:To analyze the effects of Ageratum conyzoides L.on the monosodium iodoacetate induced osteoarthritis rats.Methods:Thin layer chromatography was performed to analyze the constituents of the babandotan extract...Objective:To analyze the effects of Ageratum conyzoides L.on the monosodium iodoacetate induced osteoarthritis rats.Methods:Thin layer chromatography was performed to analyze the constituents of the babandotan extract leaves.White male Sprague-Dawley rats used in this study were divided into 6 groups:normal control and negative control groups,both given0.5%carboxymethyl cellulose;the positive control group that was given glucosamine and chondroitin suspension(486 mg/200 g B.W.);the 3 dose variation extract groups including dose 1,2,and 3 that were given 40,80,and 160 mg/200 g B.W.respectively on day 29 until50.All the groups were induced with 0.05 mL monosodium iodoacetate(20 mg/mL)on day1,except normal control induced by saline.Measurement of edema volume of rat knees was performed on day 0,8,15,22,29,43,and 50.Hematology data was measured at day 1,29and 50.Serum was collected at day 50 to evaluate TNF-α and MMP-9 by ELISA.Cartilage histopathology was evaluated by staining with H&E and Safranin-o-fast green staining on day 50.Results:The babandotan leaves extract dose 2(80 mg/200 g B.W.)and dose 3(160mg/200 g B.W.)could decrease the edema volume,increase the area and thickness of articular cartilage,and increase proteoglycan level.Particularly,dose 3(160 mg/200 g B.W.)of extract babandotan leaves were able to significantly decrease the number of leukocytes,lymphocytes and udem volume,and decrease TNF alpha and MMP-9 levels.Conclusions:Babandotan leaves extract can recover inflammation and cartilages degradation by inhibiting TNF-αin inflammation processes and MMP-9 in the collagenase reaction in the cartilages.展开更多
Objective:To determine the suppressive and curative activity of aqueous leaf extract of Ageratum conyzoides(A.conyzoides) in combination with chloroquine and artesunate, respectively against Plasmodium berghei infecti...Objective:To determine the suppressive and curative activity of aqueous leaf extract of Ageratum conyzoides(A.conyzoides) in combination with chloroquine and artesunate, respectively against Plasmodium berghei infection in mice.Methods:Using malaria(Plasmodium berghei) infected albino mice of both sexes,aqueous extracts of A.conyzoides in combination with chloroquine and artesunate were tested for antimalarial activity,respectively.Four-day suppressive test and Rane’s curative test were carried out.Results:Suppressive tests showed significant dose dependent reduction in parasitemia level produced by the extract-chloroquine and extract-artesunate combinations.Suppressive activities of both extract-drug combinations were greater than the individual drugs alone.Extract-chloroquine(100:5) produced the highest suppressive effect(98%suppression).Curative tests showed absolute survival in two extract-drug combinations.Two extract-drug combinations produced higher curative effects than the individual drugs alone.The highest dose combinations of extract-chloroquine(100:5) and extract-artesunate(100:5) produced absolute parasitemia clearance(cure) in the infected mice. Conclusions:The study indicated that aqueous extract of A.conyzoides had the ability to potentiate the antimalarial activity of chloroquine and artesunate against induced plasmodiasis in mice.It contributes a lot in the malaria endemic and poverty stricken tropics.展开更多
The objective of the study was to determine the antibacterial efficacy of Bidens pilosa Aqueous (BPA), Bidens pilosa Ethanolic (BPE), Ageratum conyzoides Aqueous (ACA), Ageratum conyzoides Ethanolic (ACE), Ocimum suav...The objective of the study was to determine the antibacterial efficacy of Bidens pilosa Aqueous (BPA), Bidens pilosa Ethanolic (BPE), Ageratum conyzoides Aqueous (ACA), Ageratum conyzoides Ethanolic (ACE), Ocimum suave Aqueous (OSA) and Ocimum suave Ethanolic (OSE) extracts on HIV/AIDS patients’ oral bacteria. Healthy green leaves of the plants were collected in Ishaka Uganda, processed and portions separately extracted with hot distilled water and cold ethanol. The susceptibility, MIC and MBC of each extract were determined using standard protocols. The bacteria had significant (p Bidens pilosa, Ageratum conyzoides and Ocimum suave on oral lesions of HIV/AIDS patients made by traditional healers and local people in South-Western Uganda. We recommend a detailed study of structural identities and activities of the active antibacterial principle(s) in these plants for possible new drug entities and verification of the interactive effects of the principle(s) with ARVs and cotrimoxazole used daily by HIV/AIDS patients.展开更多
文摘Cowpea is a vegetable that contributes to food security in Guinea. Despite its importance, more than 30% of its production is lost between harvesting, storage and consumption. The main cowpea pest is Callosobruchus maculatus. The commonly used control strategy is essentially based on chemicals whose use is toxic, expensive and restrictive. In the search for alternatives to chemical control, this work was undertaken to evaluate the insecticidal potential of Ageratum conyzoid leaf powders and Securidaca longepedunculata roots. Powder toxicity and insecticidal efficacy tests were performed separately on groups of 20 Callosobruchus maculatus using 3 doses of Ageratum conyzoid leaf powders and Securidaca longepedunculata roots in jars each containing 100 g cowpea. The mortality of Callosobruchus maculatus and the impact of powders were noted respectively for 96 h and 4 months after infestation. The germination capacity of the treated seeds was assessed at the start of the study. Doses of 1 and 8 g of Ageratum conyzoides leaf powders and Securidaca longepedunculata roots were applied respectively to every 100 g of cowpea and led to 100% mortality of Callosobruchus maculatus. At these same doses, more than half of the treated seeds were attacked during the 4 months of storage. Germination tests have shown that powders of Ageratum conyzoides leaves and roots of Securidaca longepedunculata have no negative effect on the germination power of cowpea seeds. Therefore, they could be considered as excellent bio-insecticides that socio-professional strata (farmers and warehouse workers) can use in the fight against cowpea insects intended for storage.
基金supported by the Ministry of Research Technology and Higher Education of Indonesia 2016
文摘Objective:To analyze the effects of Ageratum conyzoides L.on the monosodium iodoacetate induced osteoarthritis rats.Methods:Thin layer chromatography was performed to analyze the constituents of the babandotan extract leaves.White male Sprague-Dawley rats used in this study were divided into 6 groups:normal control and negative control groups,both given0.5%carboxymethyl cellulose;the positive control group that was given glucosamine and chondroitin suspension(486 mg/200 g B.W.);the 3 dose variation extract groups including dose 1,2,and 3 that were given 40,80,and 160 mg/200 g B.W.respectively on day 29 until50.All the groups were induced with 0.05 mL monosodium iodoacetate(20 mg/mL)on day1,except normal control induced by saline.Measurement of edema volume of rat knees was performed on day 0,8,15,22,29,43,and 50.Hematology data was measured at day 1,29and 50.Serum was collected at day 50 to evaluate TNF-α and MMP-9 by ELISA.Cartilage histopathology was evaluated by staining with H&E and Safranin-o-fast green staining on day 50.Results:The babandotan leaves extract dose 2(80 mg/200 g B.W.)and dose 3(160mg/200 g B.W.)could decrease the edema volume,increase the area and thickness of articular cartilage,and increase proteoglycan level.Particularly,dose 3(160 mg/200 g B.W.)of extract babandotan leaves were able to significantly decrease the number of leukocytes,lymphocytes and udem volume,and decrease TNF alpha and MMP-9 levels.Conclusions:Babandotan leaves extract can recover inflammation and cartilages degradation by inhibiting TNF-αin inflammation processes and MMP-9 in the collagenase reaction in the cartilages.
文摘Objective:To determine the suppressive and curative activity of aqueous leaf extract of Ageratum conyzoides(A.conyzoides) in combination with chloroquine and artesunate, respectively against Plasmodium berghei infection in mice.Methods:Using malaria(Plasmodium berghei) infected albino mice of both sexes,aqueous extracts of A.conyzoides in combination with chloroquine and artesunate were tested for antimalarial activity,respectively.Four-day suppressive test and Rane’s curative test were carried out.Results:Suppressive tests showed significant dose dependent reduction in parasitemia level produced by the extract-chloroquine and extract-artesunate combinations.Suppressive activities of both extract-drug combinations were greater than the individual drugs alone.Extract-chloroquine(100:5) produced the highest suppressive effect(98%suppression).Curative tests showed absolute survival in two extract-drug combinations.Two extract-drug combinations produced higher curative effects than the individual drugs alone.The highest dose combinations of extract-chloroquine(100:5) and extract-artesunate(100:5) produced absolute parasitemia clearance(cure) in the infected mice. Conclusions:The study indicated that aqueous extract of A.conyzoides had the ability to potentiate the antimalarial activity of chloroquine and artesunate against induced plasmodiasis in mice.It contributes a lot in the malaria endemic and poverty stricken tropics.
文摘The objective of the study was to determine the antibacterial efficacy of Bidens pilosa Aqueous (BPA), Bidens pilosa Ethanolic (BPE), Ageratum conyzoides Aqueous (ACA), Ageratum conyzoides Ethanolic (ACE), Ocimum suave Aqueous (OSA) and Ocimum suave Ethanolic (OSE) extracts on HIV/AIDS patients’ oral bacteria. Healthy green leaves of the plants were collected in Ishaka Uganda, processed and portions separately extracted with hot distilled water and cold ethanol. The susceptibility, MIC and MBC of each extract were determined using standard protocols. The bacteria had significant (p Bidens pilosa, Ageratum conyzoides and Ocimum suave on oral lesions of HIV/AIDS patients made by traditional healers and local people in South-Western Uganda. We recommend a detailed study of structural identities and activities of the active antibacterial principle(s) in these plants for possible new drug entities and verification of the interactive effects of the principle(s) with ARVs and cotrimoxazole used daily by HIV/AIDS patients.
