@article {1112, title = {Correlation between the in-vitro and in-vivo Antihyperglycemic Effect of Ocimum Sanctum, Trigonella Foenum Graecum and Curcuma Longa}, journal = {Pharmacognosy Journal}, volume = {12}, year = {2020}, month = {March 2020}, pages = {369-376}, type = {Research Article}, chapter = {369}, abstract = {

This study is carried out to investigate the correlation between the in-vitro and in-vivo studies which demonstrates the antihyperglycemic effect of Trigonella foenum graecum, Ocimum sanctum and Curcuma longa extracts. Methanolic seed extract of Trigonella foenum graecum, methanolic leaf extract of Ocimum sanctum, ethyl acetate rhizomes extract of Curcumina longa are prepared and supplied by Sami labs, Bangalore, India on request. in-vitro studies such as alpha glucosidase inhibitory and DPP-IV inhibitory activity were done for all the three extracts as per previous studies. After Institutional animal ethical committee clearance male albino rats (155{\textendash}215 g) were divided into 5 groups. Each group consists of randomly assigned 6 albino rats. The placebo (Normal saline) control group, Standard (Vildagliptin) group and 3 above mentioned extract groups. Oral glucose tolerance test (OGTT) was done. Blood samples were collected for blood sugar estimation at -30 (before extract),0, 15, 45 minutes and blood sugar levels were done by enzymatic assay. Results: The maximum alpha-glucosidase inhibitory activity at 100 μg/ml by Trigonella foenum graecum extract was 68\% with IC50 value of 57.25, Ocimum sanctum leaf extract was 65\% with IC50 value of 59.55, Curcuma longa was 72\% with IC50 value of 56.79 when compared to the Acarbose (STD) of 94\% with IC50 values of 42.78. The maximum \% of DPP IV inhibition at 320 μg/ml of Trigonella foenum graecum extract was 77.84\% with IC50 value of 52.26, Ocimum sanctum extract was 86.98\% with IC50 value of 46.08 and Curcuma longa was 76.47\% with IC50 value of 55.06 when compared to the Vildagliptin (STD) was 80.15\% with IC50 value of 22.98. The OGTT results of Ocimum sanctum (200 mg/kg) shows reduction in blood glucose (p=\<0.05) at 15 minutes and significant reduction (p=\<0.001) at 45 minutes and Trigonella foenum graecum (2 gm/kg) showed significant reduction in blood glucose (p=\<0.001) at 15 minutes when compared to control. Further clinical studies are necessary to establish the therapeutic potential of these extracts in the treatment of type 2 diabetes mellitus. Conclusion: Ocimum sanctum leaf extract, Trigonella foenum graecum seed extract shows significant alpha-glucosidase and DPPIV inhibitory activity which correlates with the antihyperglycemic effects by in-vivo oral glucose tolerance test. Further clinical studies are necessary to establish the therapeutic potential of these extracts in the treatment of type 2 diabetes mellitus.

}, keywords = {Curcuma longa, GLP-1, Glucagon, Insulin, Ocimum sanctum, Trigonella foenum graecum, Type 2 diabetes mellitus}, doi = {10.5530/pj.2020.12.58}, author = {Inbaraj SD and Muniappan M} } @article {1007, title = {Effect of Trigonella Foenum Graecum Seed Extract on Entero- Insular Axis by Oral Glucose Tolerance Test in Albino Rats}, journal = {Pharmacognosy Journal}, volume = {11}, year = {2019}, month = {October 2019}, pages = {1371-1375}, type = {Research Article}, chapter = {1371}, abstract = {

The research study evaluates the effect of Trigonella foenum graecum seed extract on the entero-insular axis and the hyperglycemia due to oral glucose tolerance test in albino rats. Methanolic seed extract of Trigonella foenum graecum was prepared by Sami labs, Bangalore and used for the study. Institutional Animal ethical committee clearance obtained. Male albino rats (155{\textendash}215 g) were divided into 4 groups each having 6 albino rats were randomly assigned Control (Normal saline) group, Standard (Vildagliptin 50 mg/kg group), Trigonella foenum graecum seed extract (100 mg/kg) and (200 mg/kg) groups. After overnight fasting the baseline biochemical evaluation in the fasting state blood glucose, Insulin level, Glucagon level, GLP- 1 (Glucagon like peptide-1), GIP (Glucose dependent Insulinotropic peptide) level were measured at -30 minutes for all the above groups. Control, Vildagliptin (STD) and the extracts were orally administered by using rat oral feeding tube. 30 minutes later oral glucose tolerance test (OGTT) was done. Blood samples were evaluated for blood sugar, Insulin, Glucagon, GLP- 1and GIP at -30, 0, 15 and 45 minutes after oral glucose load. Trigonella foenum graecum (2 gm/kg) showed significant reduction in blood glucose (p= \<0.001) at 45 minutes when compared to control. Trigonella foenum graecum (1 gm/kg and 2 gm/kg) showed significant (p=\<0.001) increase in GIP levels at 45 minutes of OGTT and (1 gm/kg) showed reduction in glucagon levels (p=\< 0.001) at 15 minutes and at 45 minutes (p=\<0.05). Trigonella foenum graecum extracts showed significant antihyperglycemic and incretin enhancing effects through entero-insular axis. Further in-depth animal and clinical studies are necessary to bring out the therapeutic potential of this seed extract for the treatment of type 2 diabetes mellitus.

}, keywords = {Antihyperglycemic, Entero-Insular axis, GIP, GLP-1, Glucagon, Insulin, Trigonella foenum graecum}, doi = {10.5530/pj.2019.11.212}, author = {SD Inbaraj and M Muniappan} }