@article {121, title = {Study of Antidiabetic Properties of Uvaria narum Leaf Extract through Glucose Uptake and Glucose Transporter 4 Expression Studies in 3T3L1 Cell Line Model}, journal = {Pharmacognosy Research}, volume = {11}, year = {2019}, month = {August 2019}, pages = {304-309}, type = {Original Article}, chapter = {304}, abstract = {

Background: Uvaria narum (UN) is known to have antipyretic, antimicrobial, anti-inflammatory and antimalarial properties. The antidiabetic properties of UN remains unexplored. The current study has been aimed at understanding the antidiabetic property of UN extract on an in vitro model using 3T3-L1 cell line. Materials\ and Methods: Methanolic extract of UN was prepared, and its cytotoxic effect on 3T3-L1 cells was assessed. Glucose uptake and glucose transporter 4 (GLUT4) translocation in 3T3-L1 cell line on treatment with the extract was evaluated against a standard drug, metformin. α-glucosidase and α-amylase inhibition activities of the extract were also assayed with acarbose as the standard drug. Results: Treatment with UN extract had no cytotoxic effect on the cells. UN extract showed a good percentage inhibition of α-amylase and α-glucosidase activities. UN extract showed 71.31\% inhibition and the control drug Acarbose exhibited 88.54\% inhibition in α-amylase activity. Furthermore, the extract showed 79.11\% inhibition when Acarbose exhibited 87.35\% inhibition in α-glucosidase activity. IC50 values were also determined. Further, on treatment with the extract, 75.49\% of 3T3-L1 cells took up glucose and 70.67\% had GLUT4 expression. Conclusion: UN extract enhances glucose uptake and GLUT4 expression, inhibits α-amylase and α-glucosidase activities, thereby demonstrating the antidiabetic properties in vitro.

}, keywords = {3T3-L1, Alucose transporter 4, Antidiabetic activity, Uvaria narum, α-amylase, α-glucosidase.}, doi = {10.4103/pr.pr_7_19}, author = {Murad Alsawalha and P. B. Janardhana and K. R. Padma and Shiva Shankar Reddy and Abeer M. Al-Subaie and Srinivasa Rao Bolla and Vishnu Priya Veeraraghavan and Joel P. Joseph and Surapaneni Krishna Mohan} } @article {324, title = {Hydroxycitric Acid-Induced Activation of Peroxisome Proliferator-Activated Receptors in 3T3-L1 Adipocyte Cells}, journal = {Pharmacognosy Research}, volume = {10}, year = {2018}, month = {July 2018}, pages = {275-281}, type = {Original Article}, chapter = {275}, abstract = {

Background: Increase in obesity incidence has become serious threat to civilized human population. Traditional Indian System of Medicines may have many potential leads in managing obesity. (-)-Hydroxycitric acid (HCA), a unique compound which is present in Garcinia species, has been safely used for centuries in Southeastern Asia for various purposes. Objective: To determine the effect of HCA treatment on peroxisome proliferator-activated receptors (PPARs) and their target genes. Materials and Methods: Effect of the calcium salt of HCA on adipogenic transcription factors PPARs and their target genes (lipoprotein lipase, fatty acid synthase, fatty acid binding protein, glucose transporter 4, and adiponectin) during adipogenesis in 3T3-L1 was investigated. The extent of adipogenesis was checked by measuring the lipid accumulation and glucose uptake in the presence and absence of HCA. Results: HCA treatment modulated the differentiation of adipocytes in a dose-dependent manner, wherein lower concentrations showed increased accumulation of lipid depots. HCA treatment increased PPARγ and its target genes during adipocyte differentiation, which emphasize the role of HCA in adipocity and obesity. Moreover, the binding conformations of HCA and PPARα and PPARγ were predicted using flexible docking and confirmed with known agonists, which also confirms the bioactivity. Conclusion: HCA decreases circulating lipids through raised levels of adipogenic-specific genes activated by the PPARs, thereby augmenting adiposity and related complications.

}, keywords = {3T3-L1, Adipocyte cells, Garcinia, Hydroxycitric acid, Peroxisome proliferator-activated receptor γ}, doi = {10.4103/pr.pr_115_17}, author = {Ramesh Parjapath and Veeresh Kumar Sali and Sangeetha M. Kannan and Atmaja Kurapati and Hannah Rachel Vasanthi} }