PMID- 29649627 OWN - NLM STAT- MEDLINE DCOM- 20181015 LR - 20211204 IS - 1950-6007 (Electronic) IS - 0753-3322 (Linking) VI - 103 DP - 2018 Jul TI - Overexpression of HIPK2 attenuates spinal cord injury in rats by modulating apoptosis, oxidative stress, and inflammation. PG - 127-134 LID - S0753-3322(17)36963-9 [pii] LID - 10.1016/j.biopha.2018.03.117 [doi] AB - HIPK2 is considered to be a tumor suppressor. It also has been implicated in several functions such as apoptosis and inflammation that are linked to spinal cord injury (SCI). However, whether HIPK2 ameliorates the neurological pain of SCI remains unclear. Here, we investigated the effects of HIPK2 on neurological function, oxidative stress, levels of inflammatory cytokines and expression of Bcl-2/Bax in an SCI model. Firstly, we evaluated the therapeutic effects of HIPK2 on neurological pain in the SCI rat using the Basso, Beattie and Bresnahan scores and H & E staining. Overexpression of HIPK2 significantly elevated the levels of brain-derived neurotrophic factor (BDNF) and glial cell line-derived neurotrophic factor (GDNF), and reduced the mRNA expression of Nogo-A and RhoA in SCI rats. Furthermore, terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling (TUNEL) assays showed that overexpression of HIPK2 significantly reduced the number of apoptotic cells. Overexpression of HIPK2 also decreased expression of Bax and Caspase-3 and elevated expression of Bcl-2 in the SCI model, indicating that HIPK2 exhibited its protective activity by inhibiting SCI-induced apoptosis. Then, we measured the serum concentrations of malondialdehyde (MDA), superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GSH-PX). We also determined the mRNA and protein levels of nuclear factor-kappaB p65 unit, tumor necrosis factor-alpha (TNF-alpha), and interleukin (IL)-1beta. HIPK2 overexpression reduced oxidative stress and the levels of inflammatory cytokines compared with SCI control animals. Additionally, acetylation of HIPK2 was reduced in SCI rats. Overexpression of HIPK2 could enhance autophagy by elevating the expression of Beclin-1 and LC3-II while autophagy is regarded as a beneficial regulator to improve spinal cord injury. Together, overexpression of HIPK2 improved contusive SCI induced pain by modulating oxidative stress, Bcl‑2 and Bax signaling, and inflammation, and also regulating autophagy. CI - Copyright (c) 2018. Published by Elsevier Masson SAS. FAU - Li, Renbo AU - Li R AD - Department of Orthopedics, The First Hospical of China Medical University, Shenyang, Liaoning Province, 110001, China; Third People's Hospital of Dalian, Dalian, Liaoning Province, 116091, China. FAU - Shang, Jingbo AU - Shang J AD - Third People's Hospital of Dalian, Dalian, Liaoning Province, 116091, China. FAU - Zhou, Wei AU - Zhou W AD - Third People's Hospital of Dalian, Dalian, Liaoning Province, 116091, China. FAU - Jiang, Li AU - Jiang L AD - Third People's Hospital of Dalian, Dalian, Liaoning Province, 116091, China. FAU - Xie, Donghui AU - Xie D AD - Third People's Hospital of Dalian, Dalian, Liaoning Province, 116091, China. FAU - Tu, Guanjun AU - Tu G AD - Department of Orthopedics, The First Hospical of China Medical University, Shenyang, Liaoning Province, 110001, China. Electronic address: tu188@sina.com. LA - eng PT - Journal Article DEP - 20180424 PL - France TA - Biomed Pharmacother JT - Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie JID - 8213295 RN - 0 (Anti-Inflammatory Agents) RN - 0 (Antioxidants) RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Glial Cell Line-Derived Neurotrophic Factor) RN - 0 (Nogo Proteins) RN - EC 2.7.11.1 (HIPK2 protein, rat) RN - EC 2.7.11.1 (Protein Serine-Threonine Kinases) RN - EC 3.6.5.2 (rhoA GTP-Binding Protein) SB - IM MH - Animals MH - Anti-Inflammatory Agents/metabolism MH - Antioxidants/metabolism MH - *Apoptosis MH - Behavior, Animal MH - Brain-Derived Neurotrophic Factor/metabolism MH - Cell Count MH - Glial Cell Line-Derived Neurotrophic Factor/metabolism MH - Inflammation/*pathology MH - Male MH - Nogo Proteins/metabolism MH - *Oxidative Stress MH - PC12 Cells MH - Protein Serine-Threonine Kinases/*metabolism MH - Rats MH - Rats, Sprague-Dawley MH - Spinal Cord/metabolism/pathology MH - Spinal Cord Injuries/*enzymology/*pathology MH - rhoA GTP-Binding Protein/metabolism OTO - NOTNLM OT - Apoptosis OT - Homeodomain-interacting protein kinase 2 (HIPK2) OT - Inflammation OT - Nuclear factor-kappaB OT - Oxidative stress OT - Spinal cord injury EDAT- 2018/04/13 06:00 MHDA- 2018/10/16 06:00 CRDT- 2018/04/13 06:00 PHST- 2017/12/19 00:00 [received] PHST- 2018/03/20 00:00 [revised] PHST- 2018/03/20 00:00 [accepted] PHST- 2018/04/13 06:00 [pubmed] PHST- 2018/10/16 06:00 [medline] PHST- 2018/04/13 06:00 [entrez] AID - S0753-3322(17)36963-9 [pii] AID - 10.1016/j.biopha.2018.03.117 [doi] PST - ppublish SO - Biomed Pharmacother. 2018 Jul;103:127-134. doi: 10.1016/j.biopha.2018.03.117. Epub 2018 Apr 24.