PMID- 36599139 OWN - NLM STAT- MEDLINE DCOM- 20230106 LR - 20230403 IS - 1728-7731 (Electronic) IS - 1726-4901 (Linking) VI - 86 IP - 1 DP - 2023 Jan 1 TI - Necrostatin-1 prevents skeletal muscle ischemia reperfusion injury by regulating Bok-mediated apoptosis. PG - 26-33 LID - 10.1097/JCMA.0000000000000806 [doi] AB - BACKGROUND: Receptor interacting serine/threonine kinase 1 (RIPK1) mediates apoptosis by regulating the classic proapoptotic effectors Bcl-2-associated X protein (Bax) and Bcl-2 homologous antagonist/killer (Bak). Although Bcl-2-related ovarian killer (Bok) is structurally similar to Bak and Bax, it is unclear whether it mediates apoptosis in skeletal muscle ischemia reperfusion (IR) injury. We hypothesized that by regulating Bok-mediated apoptosis, inhibiting RIPK1 with necrostatin-1 would reduce skeletal muscle IR injury. METHODS: Rats were randomized into four groups: sham (SM), IR, IR treated with necrostatin-1 (NI), or vehicle dimethyl sulfoxide (DI). For the IR group, the right femoral artery was clamped for 4 hours and then reperfused for 4 hours, and for the NI and DI groups, necrostatin-1 (1.65 mg/kg) and the equal volume of dimethyl sulfoxide were intraperitoneally administered prior to IR induction. The structural damage of muscle tissue and protein expression of Bok, Bcl-2, and cleaved caspase-3 were investigated, and apoptotic cells were identified with terminal dUTP nick-end labeling (TUNEL) staining. In vitro, human skeletal muscle cells (HSMCs) were exposed to 6 hours of oxygen-glucose deprivation followed by normoxia for 6 hours to establish an oxygen-glucose deprivation/reoxygenation (OGD/R) model. To determine the role of Bok, cell viability, lactate dehydrogenase (LDH) release, and flow cytometry were examined to demonstrate the effects of necrostatin-1 and Bok knockdown on the OGD/R insult of HSMCs. RESULTS: Necrostatin-1 pretreatment markedly reduced IR-induced muscle damage and RIPK1, Bok, and cleaved caspase-3 expression, whereas upregualted Bcl-2 expression (p < 0.05). Furthermore, necrostatin-1 prevented mitochondrial damage and decreased TUNEL-positive muscle cells (p < 0.05). In vitro, HSMCs treated with necrostatin-1 showed reduced Bok expression, increased cell viability, and reduced LDH release in response to OGD/R (p < 0.05), and Bok knockdown significantly blunted the OGD/R insult in HSMCs. CONCLUSION: Necrostatin-1 prevents skeletal muscle from IR injury by regulating Bok-mediated apoptosis. CI - Copyright (c) 2022, the Chinese Medical Association. FAU - Cao, Yu AU - Cao Y AD - Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Zhejiang, China. FAU - Wang, Hong-Bo AU - Wang HB AD - Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Zhejiang, China. FAU - Ni, Chun-Jue AU - Ni CJ AD - Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Zhejiang, China. FAU - Chen, Shun-Li AU - Chen SL AD - Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Zhejiang, China. FAU - Wang, Wan-Tie AU - Wang WT AD - Institute of Ischemia-Reperfusion Injury, Wenzhou Medical University, Zhejiang, China. FAU - Wang, Liang-Rong AU - Wang LR AD - Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Zhejiang, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20230102 PL - Netherlands TA - J Chin Med Assoc JT - Journal of the Chinese Medical Association : JCMA JID - 101174817 RN - 0 (bcl-2-Associated X Protein) RN - EC 3.4.22.- (Caspase 3) RN - 0 (necrostatin-1) RN - YOW8V9698H (Dimethyl Sulfoxide) RN - 0 (Proto-Oncogene Proteins c-bcl-2) RN - S88TT14065 (Oxygen) RN - IY9XDZ35W2 (Glucose) RN - 0 (BOK protein, human) SB - IM MH - Rats MH - Humans MH - Animals MH - bcl-2-Associated X Protein MH - Caspase 3/metabolism/pharmacology MH - *Dimethyl Sulfoxide/pharmacology MH - Apoptosis MH - Proto-Oncogene Proteins c-bcl-2 MH - *Reperfusion Injury/prevention & control MH - Oxygen MH - Muscle, Skeletal/metabolism MH - Glucose COIS- Conflicts of interest: The authors declare that they have no conflicts of interest related to the subject matter or materials discussed in this article. EDAT- 2023/01/05 06:00 MHDA- 2023/01/07 06:00 CRDT- 2023/01/04 16:53 PHST- 2023/01/04 16:53 [entrez] PHST- 2023/01/05 06:00 [pubmed] PHST- 2023/01/07 06:00 [medline] AID - 02118582-202301000-00007 [pii] AID - 10.1097/JCMA.0000000000000806 [doi] PST - ppublish SO - J Chin Med Assoc. 2023 Jan 1;86(1):26-33. doi: 10.1097/JCMA.0000000000000806. Epub 2023 Jan 2.