@article {1402, title = {Metformin Potentiates the Antidiabetic Properties of Annona muricata and Tapinanthus globiferus Leaf Extracts in Diabetic Rats}, journal = {Pharmacognosy Journal}, volume = {13}, year = {2021}, month = {May 2021}, pages = {614-619}, type = {Original Article}, chapter = {614}, abstract = {

Background: There is paucity of experimental evidence on the complementary use of standard anti-diabetic drugs with herbal formulations. Materials and Methods: In this study, extracts of Annona muricata (AME) and Tapinanthus globiferus (TGE) were administered with metformin to diabetic rats in order to study the potential complementary effects. Diabetes was induced by a single intraperitoneal (i.p) injection of alloxan (150 mg/kg BW). AME and TGE (200 mg/ kg BW each) and Metformin (100 mg/kg BW) was administered to diabetic rats orally for 21 days. At the end of the study, rats were sacrificed; blood was collected for assessment of lipid profile and kidney function. Results: Treatment of diabetic rats with AME and TGE caused a significant decrease (p \< 0.05) in the concentrations of total cholesterol (TC), triglyceride (TG) and Coronary Risk Index (CRI) with a concomitant increase in High Density Lipoprotein (HDL). Similarly, urea and creatinine concentration decreased in diabetic rats administered plant extracts. Co-administration of the plant extracts with metformin significantly improved lipid profiles and kidney function relative to rats administered metformin alone. Co-administration of AME and TGE extracts with metformin produced significant improvement in biochemical indices of diabetic rats. Conclusion: The results suggest potential synergistic interaction between the plant extracts and metformin. Furthermore, this work provides scientific support for the concomitant use of the plants used in the study with orthodox drugs for the management of diabetes.

}, keywords = {Annona muricata, Diabetes, Drug interaction, Tapinanthus globiferus}, doi = {10.5530/pj.2021.13.77}, author = {Francis O. Atanu and Oghenetega J. Avwioroko and Omotayo B. Ilesanmi and Ojochenemi E. Yakubu} } @article {1009, title = {Comparative Study of the Effects of Annona muricata and Tapinanthus globiferus Extracts on Biochemical Indices of Diabetic Rats}, journal = {Pharmacognosy Journal}, volume = {11}, year = {2019}, month = {October 2018}, pages = {1365-1370}, type = {Research Article}, chapter = {1365}, abstract = {

Introduction: Annona muricata and Tapinanthus globiferus (mistletoe) are medicinal plants used in traditional medicine to combat an array of human diseases. However, there is dearth of scientific prove for the activity of these plants in the management of non-infectious human diseases such as cancer, insomnia, hypertension, ulcers and diabetes. Method: The present study was designed to assess comparatively the effects of methanol extracts of Annona muricata (AME) and Tapinanthus globiferus (TGE) on biochemical indices of alloxan induced diabetic rats. The animals were allocated to eight (8) groups, group I were normal non-diabetic rats, group II (diabetic untreated group), group III treated with metformin alone, groups IV \& V were diabetic rats treated with AME at dose of concentration 200 mg/kg BW \& 400 mg/kg BW respectively, groups VI \& VII were diabetic rats treated with 200 mg/kg BW \& 400 mg/kg BW of TGE respectively. Group VIII were diabetic rats treated with AME + TGE at concentration of 200 mg/kg BW each. Concentrations of serum total cholesterol (TC), high density lipoprotein (HDL), triglyceride (TG) of alloxan diabetic rats, creatinine and urea were assayed after 21 days of the respective treatments. Results: Diabetic untreated rats had significant increase p\<0.05 in TC, TG, urea and creatinine compared to normal control group as opposed to the significant decrease observed for HDL in diabetic rats. However, treatment of diabetic rats with AME and TGE significantly suppressed (p\<0.05) the concentrations of TC, TG and creatinine when compared with the diabetic untreated rats. A similar trend was observed for the calculated atherogenic index of treated rats when compared with diabetic untreated rats. Interestingly, co-administration of AME + TGE improved the biochemical indices of diabetic rats better than using each plant separately. Conclusion: The results of this study suggest that AME and TGE could offer some benefits in the management of diabetic complications especially with regard to cardiac and renal health.

}, keywords = {Alloxan, Annona muricata, Diabetes, Mistletoe, Tapinanthus globiferus}, doi = {10.5530/pj.2019.11.211}, author = {Atanu FO and Avwioroko OJ and Ilesanmi OB and Oguche M} }