title: In vitro glucose uptake activity of Aegles marmelos and Syzygium cumini by activation of Glut-4, PI3 kinase and PPARgamma in L6 myotubes.
abstract: The purpose of the present study is to investigate the effect of methanolic extracts of Aegles marmelos and Syzygium cumini on a battery of targets glucose transporter (Glut-4), peroxisome proliferator activator receptor gamma (PPARgamma) and phosphatidylinositol 3' kinase (PI3 kinase) involved in glucose transport. A. marmelos and S. cumini are anti-diabetic medicinal plants being used in Indian traditional medicine. Different solvent extracts extracted sequentially were analysed for glucose uptake activity at each step and methanol extracts were found to be significantly active at 100ng/ml dose comparable with insulin and rosiglitazone. Elevation of Glut-4, PPARgamma and PI3 kinase by A. marmelos and S. cumini in association with glucose transport supported the up-regulation of glucose uptake. The inhibitory effect of cycloheximide on A. marmelos- and S. cumini-mediated glucose uptake suggested that new protein synthesis is required for the elevated glucose transport. Current observation concludes that methanolic extracts of A. marmelos and S. cumini activate glucose transport in a PI3 kinase-dependent fashion.
authors.affiliation: Centre For Biotechnology, Anna University, Chennai 600025, India.
authors.forename: R
authors.initials: R
authors.lastname: Anandharajan
authors.forename: S
authors.initials: S
authors.lastname: Jaiganesh
authors.forename: N P
authors.initials: NP
authors.lastname: Shankernarayanan
authors.forename: R A
authors.initials: RA
authors.lastname: Viswakarma
authors.forename: A
authors.initials: A
authors.lastname: Balakrishnan
mesh_terms: D045471:Aegle; D000818:Animals; D001692:Biological Transport / Q000187:drug effects; D005947:Glucose / Q000378:metabolism*; D051275:Glucose Transporter Type 4 / Q000378:metabolism; D066298:In Vitro Techniques; D018485:Muscle Fibers, Skeletal / Q000166:cytology; D047495:PPAR gamma / Q000378:metabolism; D019869:Phosphatidylinositol 3-Kinases / Q000378:metabolism; D008517:Phytotherapy; D010936:Plant Extracts / Q000737:chemistry / Q000494:pharmacology*; D051381:Rats; D027842:Syzygium; D015854:Up-Regulation / Q000187:drug effects
chemical_list: D051275:Glucose Transporter Type 4; D047495:PPAR gamma; D010936:Plant Extracts; D019869:Phosphatidylinositol 3-Kinases; D005947:Glucose