PMID- 24804377 OWN - NLM STAT- MEDLINE DCOM- 20150520 LR - 20211203 IS - 1004-5619 (Print) IS - 1004-5619 (Linking) VI - 30 IP - 1 DP - 2014 Feb TI - [Endoplasmic reticulum stress mediates lipopolysaccharide-induced apoptosis in rat hepatocyte]. PG - 13-8 AB - OBJECTIVE: To investigate the role of endoplasmic reticulum stress (ERS) in lipopolysaccharide (LPS)-induced hepatocyte apoptosis. METHODS: Cells of the rat hepatocyte line BRL were cultured. The hepatocytes were treated with LPS, ERS inducer thapsigargin (TG), and ERS inhibitor 4-phenylbutyric acid (4-PBA), respectively or in their different combination. The cell viability was measured by MTT assay. The cyto-nuclear morphological changes of apoptosis cells were detected by the fluorescent dye Hoechst 33258. The apoptosis rate was assessed by flow cytometry with Annexin V-FITC/PI double-staining. Expressions of GRP78 as ERS marker protein, CHOP, caspase-12 and cleaved-caspase-3 as ERS related protein were detected by Western blotting. RESULTS: LPS could cause a decrease in cell viability and an increase in apoptosis rate in a dose- and time-dependent manner. The expression of GRP78, CHOP, caspase-12 and cleaved-caspase-3 proteins were significantly increased with LPS treatment. TG led to a marked decrease in cell viability and an increase in apoptosis rate, which aggravated the hepatocyte injury induced by LPS; whereas 4-PBA alleviated LPS-induced apoptosis. CONCLUSION: ERS mediates LPS-induced hepatocyte injuries, indicating that ERS may play a vital role in the pathogenesis of LPS-induced hepatocyte injuries. FAU - Ji, Ying-Lei AU - Ji YL FAU - Yan, Jun AU - Yan J FAU - Wang, Yan-Sha AU - Wang YS FAU - Liu, Yi-Chang AU - Liu YC FAU - Gu, Zhen-Yong AU - Gu ZY LA - chi PT - Journal Article PL - China TA - Fa Yi Xue Za Zhi JT - Fa yi xue za zhi JID - 9426151 RN - 0 (Endoplasmic Reticulum Chaperone BiP) RN - 0 (Heat-Shock Proteins) RN - 0 (Lipopolysaccharides) RN - 0 (Phenylbutyrates) RN - 7WY7YBI87E (4-phenylbutyric acid) RN - EC 3.4.22.- (Caspase 3) SB - IM MH - Animals MH - *Apoptosis MH - Caspase 3 MH - Cell Survival MH - Endoplasmic Reticulum Chaperone BiP MH - *Endoplasmic Reticulum Stress MH - Heat-Shock Proteins MH - Hepatocytes MH - Lipopolysaccharides MH - Phenylbutyrates MH - Rats EDAT- 2014/05/09 06:00 MHDA- 2015/05/21 06:00 CRDT- 2014/05/09 06:00 PHST- 2014/05/09 06:00 [entrez] PHST- 2014/05/09 06:00 [pubmed] PHST- 2015/05/21 06:00 [medline] PST - ppublish SO - Fa Yi Xue Za Zhi. 2014 Feb;30(1):13-8.