PMID- 29891453 OWN - NLM STAT- MEDLINE DCOM- 20190204 LR - 20220325 IS - 1673-4254 (Print) IS - 2663-0842 (Electronic) IS - 1673-4254 (Linking) VI - 38 IP - 5 DP - 2018 May 20 TI - [Role of caspase-1 activation in bilirubin-induced injury in cultured primary rat hippocampal neurons]. PG - 567-571 AB - OBJECTIVE: To investigate the role of caspase-1 activation in bilirubin-induced neuronal injury and the protective effect of VX-765 against bilirubin-induced neurotoxicity in cultured primary rat hippocampal neurons. METHODS: Cultured primary rat hippocampal neurons were exposed to DMSO (control group), 50 micromol/L bilirubin, or 50 micromol/L bilirubin 1 h after 50 micromol/L VX-765 treatment. The expressions of NLRP3 and caspase-1 in the neurons were detected by Western blotting, and the relative cell survival and death rates were assessed with a modified MTT assay, lactate dehydrogenase assay and Typan blue staining. Interleukin-18 (IL-18) concentration in the culture supernatant was measured using enzyme-linked immunosorbent assay (ELISA). RESULTS: In cultured primary rat hippocampal neurons, bilirubin exposure for 3 and 6 h caused significant increases in the expressions of NLRP3 and activated caspase-1 compared with those in the control group (P<0.05). Pretreatment of the cells with VX-765 obviously suppressed bilirubin-induced activation of caspase-1 (P<0.05). The relative survival rate of the neurons was (84.02-/+2.31)% in VX-765 intervention group, significantly higher than that in bilirubin group (P<0.05) but lower than that in the control group (P<0.05); LDH release rate in VX-765 intervention group was (10.78-/+1.58)%, significantly lower than that in bilirubin group (P<0.05) but higher than that in the control group (P<0.05). The cell death rate in VX-765 intervention group was (5.58-/+1.23)%, significantly lower than that in bilirubin group (P<0.05) but higher than that in the control group (P<0.05). CONCLUSION: In cultured primary rat hippocampal neurons, caspase-1 activation plays a role in bilirubin-induced neurotoxicity, and VX-765 treatment provides protection against bilirubin-induced neuronal injury by inhibiting caspase-1 activation. FAU - Wei, Qian AU - Wei Q AD - Department of Neonatology, Children's Hospital of Chongqing Medical University, Ministry of Education Key Laboratory of Child Development and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing Key Laboratory of Translational Medical Research in Cognitive Development and Learning and Memory Disorders, Chongqing 400014, China.E-mail: 1476595281@qq.com. FAU - Feng, Jie AU - Feng J FAU - He, Chun-Mei AU - He CM FAU - Hua, Zi-Yu AU - Hua ZY LA - chi PT - Journal Article PL - China TA - Nan Fang Yi Ke Da Xue Xue Bao JT - Nan fang yi ke da xue xue bao = Journal of Southern Medical University JID - 101266132 RN - 0 (Dipeptides) RN - 0 (NLR Family, Pyrin Domain-Containing 3 Protein) RN - 0 (Nlrp3 protein, rat) RN - 0 (para-Aminobenzoates) RN - 00OLE78529 (belnacasan) RN - EC 3.4.22.- (Caspase 3) RN - EC 3.4.22.- (Caspases) RN - EC 3.4.22.36 (Caspase 1) RN - RFM9X3LJ49 (Bilirubin) RN - YOW8V9698H (Dimethyl Sulfoxide) SB - IM MH - Animals MH - Apoptosis MH - Bilirubin/antagonists & inhibitors/pharmacology MH - Caspase 1/*metabolism MH - Caspase 3/metabolism MH - Caspases/metabolism MH - Cell Death MH - Cell Survival MH - Cells, Cultured MH - Dimethyl Sulfoxide MH - Dipeptides/pharmacology MH - Enzyme Activation/physiology MH - *Hippocampus MH - NLR Family, Pyrin Domain-Containing 3 Protein/*metabolism MH - Neurons/cytology/*drug effects/metabolism MH - Rats MH - Rats, Sprague-Dawley MH - para-Aminobenzoates/pharmacology PMC - PMC6743908 EDAT- 2018/06/13 06:00 MHDA- 2019/02/05 06:00 PMCR- 2018/05/20 CRDT- 2018/06/13 06:00 PHST- 2018/06/13 06:00 [entrez] PHST- 2018/06/13 06:00 [pubmed] PHST- 2019/02/05 06:00 [medline] PHST- 2018/05/20 00:00 [pmc-release] AID - nfykdxxb-38-5-567 [pii] AID - 10.3969/j.issn.1673-4254.2018.05.10 [doi] PST - ppublish SO - Nan Fang Yi Ke Da Xue Xue Bao. 2018 May 20;38(5):567-571. doi: 10.3969/j.issn.1673-4254.2018.05.10.