title: Preconditioning L6 Muscle Cells with Naringin Ameliorates Oxidative Stress and Increases Glucose Uptake.
abstract: Enhanced oxidative stress contributes to pathological changes in diabetes and its complications. Thus, strategies to reduce oxidative stress may alleviate these pathogenic processes. Herein, we have investigated Naringin mediated regulation of glutathione (GSH) & intracellular free radical levels and modulation of glucose uptake under oxidative stress in L6 cell lines. The results from the study demonstrated a marked decrease in glutathione with a subsequent increase in free radical levels, which was reversed by the pretreatment of Naringin. We also observed that the increased malondialdehyde level, the marker of lipid peroxidation on induction of oxidative stress was retrieved on Naringin pretreatment. Addition of Naringin (100 μM) showed approximately 40% reduction in protein glycation in vitro. Furthermore, we observed a twofold increase in uptake of fluorescent labeled glucose namely 2-(N-(7-Nitrobenz-2-oxa-1,3-diazol-4-yl)Amino)-2-Deoxyglucose (2-NBDG) on Naringin treatment in differentiated L6 myoblast. The increased uptake of 2-NBDG by L6 myotubes may be attributed due to the enhanced translocation of GLUT4. Our results demonstrate that Naringin activate GSH synthesis through a novel antioxidant defense mechanism against excessive Reactive Oxygen Species (ROS) production, contributing to the prevention of oxidative damage in addition to its effect on glycemic control.
authors.affiliation: Agroprocessing and Natural Products Division, National Institute for Interdisciplinary Science and Technology (NIIST), CSIR, Industrial Estate, Pappanamcode, Thiruvananthapuram-695019, Kerala, India.
authors.forename: R
authors.initials: R
authors.lastname: Dhanya
authors.affiliation: Agroprocessing and Natural Products Division, National Institute for Interdisciplinary Science and Technology (NIIST), CSIR, Industrial Estate, Pappanamcode, Thiruvananthapuram-695019, Kerala, India.
authors.forename: K B
authors.initials: KB
authors.lastname: Arun
authors.affiliation: Agroprocessing and Natural Products Division, National Institute for Interdisciplinary Science and Technology (NIIST), CSIR, Industrial Estate, Pappanamcode, Thiruvananthapuram-695019, Kerala, India.
authors.forename: V M
authors.initials: VM
authors.lastname: Nisha
authors.affiliation: Agroprocessing and Natural Products Division, National Institute for Interdisciplinary Science and Technology (NIIST), CSIR, Industrial Estate, Pappanamcode, Thiruvananthapuram-695019, Kerala, India.
authors.forename: H P
authors.initials: HP
authors.lastname: Syama
authors.affiliation: Agroprocessing and Natural Products Division, National Institute for Interdisciplinary Science and Technology (NIIST), CSIR, Industrial Estate, Pappanamcode, Thiruvananthapuram-695019, Kerala, India.
authors.forename: P
authors.initials: P
authors.lastname: Nisha
authors.affiliation: Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram-695012, Kerala, India.
authors.forename: T R
authors.initials: TR
authors.lastname: Santhosh Kumar
authors.affiliation: Agroprocessing and Natural Products Division, National Institute for Interdisciplinary Science and Technology (NIIST), CSIR, Industrial Estate, Pappanamcode, Thiruvananthapuram-695019, Kerala, India.
authors.forename: P
authors.initials: P
authors.lastname: Jayamurthy
mesh_terms: D000818:Animals; D002460:Cell Line; D044950:Flavanones / Q000494:pharmacology*; D005947:Glucose / Q000378:metabolism*; D051275:Glucose Transporter Type 4 / Q000378:metabolism*; D018482:Muscle, Skeletal / Q000378:metabolism* / Q000473:pathology; D018384:Oxidative Stress / Q000187:drug effects*; D051381:Rats; D017382:Reactive Oxygen Species / Q000378:metabolism*
chemical_list: D044950:Flavanones; D051275:Glucose Transporter Type 4; D017382:Reactive Oxygen Species; C495694:Slc2a4 protein, rat; D005947:Glucose; C005274:naringin