@article {1145, title = {Hypoglycemic Effect of Kalanchoe pinnata (Lam) Pers. Leaf Extract}, journal = {Pharmacognosy Journal}, volume = {12}, year = {2020}, month = {May 2020}, pages = {557-561}, type = {Research Article}, chapter = {557}, abstract = {

Introduction: Kalanchoe pinnata (Lam) Pers (Crasulaceae) is a succulent ornamental plant. In Costa Rica, the leaves are used as a coadjuvant treatment for Diabetes Mellitus based on traditional knowledge of natural remedies. Moreover, there are some studies mentioning its use for Diabetes Mellitus as medicinal plant in several countries. This research aimed to demonstrate the antidiabetic properties of hydroalcoholic extracts of K. pinnata leaves through phytochemical screening, alpha amylase inhibition and rodent models. Methods: Crude extracts of K. pinnata leaves were prepared by infusion and decoction using water:ethanol (70:30) as a solvent. The extracts prepared by decoction (LAED, lyophilized-water:ethanoldecoction) and by infusion (LAEI, lyophilized-water:ethanol-infusion) were analyzed by FolinCiocalteu, HPLC and capacity of inhibition of α-amylase activity. To determine hypoglycemic activity in rats, extracts were administered orally at doses of 250, 500 and 750 mg/Kg and blood sugar levels were monitored over a four hours period using a glucometer. Results: A significant reduction (p \< 0.05) in blood glucose was observed after one hour in rats treated with 500 mg/Kg of LAED extract. Treatment with 750 mg/Kg LAEI induced a statistically significant reduction in blood sugar at 90, 180 and 240 min, showing that the glucose-lowering effect of this extract was greater at a higher concentration. Conclusions: This study confirmed the hypoglycemic effect of K. pinnata extracts in the acute phase in rats and supports the use of this Crassulaceae as a home remedy.

}, keywords = {Antidiabetic activity, Diabetic, Extract, Kalanchoe pinnata}, doi = {10.5530/pj.2020.12.84}, author = {Ana L Ag{\"u}ero-Hern{\'a}ndez and Catalina Rosales-L{\'o}pez and Cristina Herrera and Andr{\'e}s Vargas-Picado and Rodrigo Mu{\~n}oz and Ana Abdelnour-Esquivel} } @article {874, title = {In-vitro Anti-diabetic and Antioxidant Efficacy of Methanolic Extract of Encephalartos ferox leaves}, journal = {Pharmacognosy Journal}, volume = {11}, year = {2019}, month = {May 2019}, pages = {455-460}, type = {Original Article}, chapter = {455}, abstract = {

Background: Diabetes mellitus has been identified as one of the global cause of disability and death. Objectives: The study aim to investigate the in-vitro antidibetic and antioxidant activities of methanolic extract of Encephalartos ferox leaves. Materials and Methods: The plant was screened for its Phytochemical composition. The plant material was extracted with methanol and the methanolic extract was screened (in-vitro) for its antioxidant activity using ABTS and DPPH assays. The potential antidiabetic activity of the plant extract was evaluated against some carbohydrates (α- amylase and α-glucosidase) and lipid (pancreatic lipase) digestive enzymes. The inverted intestinal sac model was also used to investigate the effect of the extract on intestinal glucose absorption. The anti-protein glycation activity of the extract was determined using haemoglobin. Results: The phytochemical screening revealed the presence of most of the phytochemicals (Tannins, Flavonoids, Terpenoids, Alkaloids etc) that were screened for. The crude extract exhibited the antidiabetic potential as it significantly (P\< 0.05) inhibited α-glucosidase and pancreatic lipase in a dose dependent fashion. The extract also effectively reduced intestinal glucose absorption. The extract further showed antioxidant activity by efficiently scavenging ABTS and DPPH radicals with IC50 values of 68.3 μg/ml and 308 μg/ml, respectively. The extract also inhibited haemoglobin glycation, thus displaying the anti-protein glycation potential. Conclusion: It is apparent that E. ferox extract could serve as scaffold for diabetic therapy. For future study, cytotoxicity profile and in vivo investigation of the antidiabetic activity of the crude extract are essential.

}, keywords = {Diabetic, Flavonoids, Hyperglycaemia, Hyperlipidemia, Hypoglycaemic, Protein- glycation}, doi = {10.5530/pj.2019.11.71}, author = {Michael Chukwuka Ojo and Foluso Oluwagbemiga Osunsanmi and Godfrey Elijah Zaharare and Rebamang Anthony Mosa and Nkosinathi David Cele and Michael Osawemi Oboh and Andy Rowland Opoku} }