PMID- 25108167 OWN - NLM STAT- MEDLINE DCOM- 20150608 LR - 20140915 IS - 1873-7544 (Electronic) IS - 0306-4522 (Linking) VI - 277 DP - 2014 Sep 26 TI - Neuroprotective effect of metformin in MPTP-induced Parkinson's disease in mice. PG - 747-54 LID - S0306-4522(14)00619-8 [pii] LID - 10.1016/j.neuroscience.2014.07.046 [doi] AB - Metformin a well known antidiabetic drug has been recently investigated and proposed to promote neurogenesis and enhance the spatial memory formation. In the present study, we aim to investigate the neuroprotective effect of metformin with respect to Parkinson's disease (PD). MPTP (Sigma-Aldrich, St. Louis, MO, USA) (25mg/kg) along with Probenecid (250 mg/kg) was administrated for five consecutive days to induce Parkinsonism in mice. Metformin 500 mg/kg was administrated orally for 21 days. Motor co-ordination and locomotor activities were evaluated by rotarod and open-field tests. The oxidative stress levels were assessed by estimating the activity of superoxide dismutase (SOD), reduced glutathione (GSH), catalase (CAT) and lipid peroxidation (LPO) specifically in the midbrain. Dopaminergic degeneration was evaluated by analyzing the tyrosine hydroxylase (TH) by immunostaining and nissl staining of the substantia nigra (SN) region of the brain. In addition brain-derived neurotrophic factor (BDNF) was also estimated. Our findings demonstrated that long-term metformin treatment resulted in significant improvement of the locomotor and muscular activities in MPTP-treated mice than acute treatment. Metformin treatment significantly improved the antioxidant activity as compared to MPTP-treated group. TH-positive cells decreased up to 16% in MPTP-treated mice as compared to normal mice (P<0.001) and were found to be protected from degeneration in metformin-treated mice (47%, P<0.01). Interestingly, BDNF levels were found to be significantly elevated in metformin treatment group as compared to MPTP treatment mice (P<0.001). In conclusion, metformin possesses neuroprotective activity and provides preclinical support for therapeutic prospective of this compound in the treatment of PD. CI - Copyright (c) 2014 IBRO. Published by Elsevier Ltd. All rights reserved. FAU - Patil, S P AU - Patil SP AD - Department of Pharmaceutical Sciences and Technology, Institute of Chemical Technology, Nathalal Parekh Marg, Matunga, Mumbai 19, Maharashtra, India. FAU - Jain, P D AU - Jain PD AD - Department of Pharmaceutical Sciences and Technology, Institute of Chemical Technology, Nathalal Parekh Marg, Matunga, Mumbai 19, Maharashtra, India. FAU - Ghumatkar, P J AU - Ghumatkar PJ AD - Department of Pharmaceutical Sciences and Technology, Institute of Chemical Technology, Nathalal Parekh Marg, Matunga, Mumbai 19, Maharashtra, India. FAU - Tambe, R AU - Tambe R AD - Department of Pharmaceutical Sciences and Technology, Institute of Chemical Technology, Nathalal Parekh Marg, Matunga, Mumbai 19, Maharashtra, India. FAU - Sathaye, S AU - Sathaye S AD - Department of Pharmaceutical Sciences and Technology, Institute of Chemical Technology, Nathalal Parekh Marg, Matunga, Mumbai 19, Maharashtra, India. Electronic address: sadhanasathaye@hotmail.com. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140807 PL - United States TA - Neuroscience JT - Neuroscience JID - 7605074 RN - 0 (Antioxidants) RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Neuroprotective Agents) RN - 9100L32L2N (Metformin) RN - 9P21XSP91P (1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine) RN - EC 1.11.1.6 (Catalase) RN - EC 1.14.16.2 (Tyrosine 3-Monooxygenase) RN - EC 1.15.1.1 (Superoxide Dismutase) RN - GAN16C9B8O (Glutathione) SB - IM MH - 1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine MH - Animals MH - Antioxidants/pharmacology MH - Brain-Derived Neurotrophic Factor/metabolism MH - Catalase/metabolism MH - Glutathione/metabolism MH - Lipid Peroxidation/drug effects/physiology MH - MPTP Poisoning/*drug therapy/metabolism/pathology MH - Male MH - Metformin/*pharmacology MH - Mice MH - Motor Activity/drug effects MH - Neuroprotective Agents/*pharmacology MH - Oxidative Stress/drug effects/physiology MH - Random Allocation MH - Rotarod Performance Test MH - Substantia Nigra/drug effects/metabolism/pathology MH - Superoxide Dismutase/metabolism MH - Tyrosine 3-Monooxygenase/metabolism OTO - NOTNLM OT - Parkinson's disease OT - metformin OT - neuroprotective OT - neurotrophic OT - oxidative stress EDAT- 2014/08/12 06:00 MHDA- 2015/06/09 06:00 CRDT- 2014/08/10 06:00 PHST- 2014/03/28 00:00 [received] PHST- 2014/07/20 00:00 [revised] PHST- 2014/07/21 00:00 [accepted] PHST- 2014/08/10 06:00 [entrez] PHST- 2014/08/12 06:00 [pubmed] PHST- 2015/06/09 06:00 [medline] AID - S0306-4522(14)00619-8 [pii] AID - 10.1016/j.neuroscience.2014.07.046 [doi] PST - ppublish SO - Neuroscience. 2014 Sep 26;277:747-54. doi: 10.1016/j.neuroscience.2014.07.046. Epub 2014 Aug 7.