PMID- 27712995 OWN - NLM STAT- MEDLINE DCOM- 20170630 LR - 20180329 IS - 1873-7064 (Electronic) IS - 0028-3908 (Linking) VI - 113 IP - Pt A DP - 2017 Feb TI - Combination strategy of PARP inhibitor with antioxidant prevent bioenergetic deficits and inflammatory changes in CCI-induced neuropathy. PG - 137-147 LID - S0028-3908(16)30437-3 [pii] LID - 10.1016/j.neuropharm.2016.09.027 [doi] AB - Neuropathic pain, a debilitating pain condition and the underlying pathogenic mechanisms are complex and interwoven amongst each other and still there is scant information available regarding therapies which promise to treat the condition. Evidence indicate that oxidative/nitrosative stress induced poly (ADP-ribose) polymerase (PARP) overactivation initiate neuroinflammation and bioenergetic crisis culminating into neurodegenerative changes following nerve injury. Hence, we investigated the therapeutic effect of combining an antioxidant, quercetin and a PARP inhibitor, 4-amino 1, 8-naphthalimide (4-ANI) on the hallmark deficits induced by chronic constriction injury (CCI) of sciatic nerve in rats. Quercetin (25 mg/kg, p.o.) and 4-ANI (3 mg/kg, p.o.) were administered either alone or in combination for 14 days to examine sciatic functional index, allodynia and hyperalgesia using walking track analysis, Von Frey, acetone spray and hot plate tests respectively. Malondialdehyde, nitrite and glutathione levels were estimated to detect oxidative/nitrosative stress; mitochondrial membrane potential and cytochrome c oxidase activity to assess mitochondrial function; NAD & ATP levels to examine the bioenergetic status and levels of inflammatory markers were evaluated in ipsilateral sciatic nerve. Quercetin and 4-ANI alone improved the pain behaviour and biochemical alterations but the combination therapy demonstrated an appreciable reversal of CCI-induced changes. Nitrotyrosine and Poly ADP-Ribose (PAR) immunopositivity was decreased and nuclear factor erythroid 2-related factor (Nrf-2) levels were increased significantly in micro-sections of the sciatic nerve and dorsal root ganglion (DRG) of treatment group. These results suggest that simultaneous inhibition of oxidative stress-PARP activation cascade may potentially be useful strategies for management of trauma induced neuropathic pain. CI - Copyright A(c) 2016 Elsevier Ltd. All rights reserved. FAU - Komirishetty, Prashanth AU - Komirishetty P AD - Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER)-Hyderabad, Balanagar, India; Division of Neurology, Department of Medicine, University of Alberta, 2E3.26 Walter C Mackenzie, Health Sciences Center, Edmonton, AB, T6G 2B7, Canada. FAU - Areti, Aparna AU - Areti A AD - Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER)-Hyderabad, Balanagar, India. FAU - Gogoi, Ranadeep AU - Gogoi R AD - Department of Biotechnology, National Institute of Pharmaceutical Education and Research (NIPER), Guwahati, India. FAU - Sistla, Ramakrishna AU - Sistla R AD - Pharmacology Division, Indian Institute of Chemical Technology (IICT), Hyderabad, India. FAU - Kumar, Ashutosh AU - Kumar A AD - Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER)-Hyderabad, Balanagar, India. Electronic address: ashutosh.niperhyd@gov.in. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20161003 PL - England TA - Neuropharmacology JT - Neuropharmacology JID - 0236217 RN - 0 (Antioxidants) RN - 0 (Naphthalimides) RN - 0 (Poly(ADP-ribose) Polymerase Inhibitors) RN - 0 (Quinolones) RN - 0U46U6E8UK (NAD) RN - 1742-95-6 (4-amino-1,8-naphthalimide) RN - 8L70Q75FXE (Adenosine Triphosphate) RN - 9753I242R5 (1-Naphthylamine) RN - 9IKM0I5T1E (Quercetin) RN - EC 2.4.2.30 (Poly(ADP-ribose) Polymerases) SB - IM MH - 1-Naphthylamine/administration & dosage/*analogs & derivatives/therapeutic use MH - Adenosine Triphosphate/metabolism MH - Animals MH - Antioxidants/*administration & dosage/therapeutic use MH - Encephalitis/complications/enzymology/*prevention & control MH - Hyperalgesia/prevention & control MH - Male MH - Mitochondria/drug effects/metabolism MH - NAD/metabolism MH - Naphthalimides/*administration & dosage/therapeutic use MH - Neuralgia/complications/enzymology/*prevention & control MH - Oxidative Stress/drug effects MH - Poly(ADP-ribose) Polymerase Inhibitors/*administration & dosage/therapeutic use MH - Poly(ADP-ribose) Polymerases/*metabolism MH - Quercetin/*administration & dosage/therapeutic use MH - Quinolones/*administration & dosage/therapeutic use MH - Rats MH - Rats, Sprague-Dawley MH - Sciatic Nerve/injuries OTO - NOTNLM OT - 4-ANI OT - Bioenergetic crisis OT - Chronic constriction injury OT - Oxidative stress OT - PARP OT - Quercetin EDAT- 2016/11/05 06:00 MHDA- 2017/07/01 06:00 CRDT- 2016/11/05 06:00 PHST- 2016/05/01 00:00 [received] PHST- 2016/09/04 00:00 [revised] PHST- 2016/09/27 00:00 [accepted] PHST- 2016/11/05 06:00 [pubmed] PHST- 2017/07/01 06:00 [medline] PHST- 2016/11/05 06:00 [entrez] AID - S0028-3908(16)30437-3 [pii] AID - 10.1016/j.neuropharm.2016.09.027 [doi] PST - ppublish SO - Neuropharmacology. 2017 Feb;113(Pt A):137-147. doi: 10.1016/j.neuropharm.2016.09.027. Epub 2016 Oct 3.