PMID- 29207360 OWN - NLM STAT- MEDLINE DCOM- 20180820 LR - 20231201 IS - 1878-1705 (Electronic) IS - 1567-5769 (Linking) VI - 55 DP - 2018 Feb TI - Oridonin protects against the inflammatory response in diabetic nephropathy by inhibiting the TLR4/p38-MAPK and TLR4/NF-kappaB signaling pathways. PG - 9-19 LID - S1567-5769(17)30460-5 [pii] LID - 10.1016/j.intimp.2017.11.040 [doi] AB - Inflammation plays a pivotal role in the development and progression of diabetic nephropathy (DN). Oridonin (Ori), a component isolated from Rabdosia rubescens, possesses remarkable anti-inflammatory, immunoregulatory and antitumor properties. However, the renoprotective effects of Ori and the underlying molecular mechanisms have not been explored in DN. In this study, we aimed to investigate the protective effects and potential mechanisms responsible for the anti-inflammatory effects of Ori in diabetes-induced renal injury in vivo and in vitro. Our results showed that Ori significantly attenuated diabetes-induced renal injury and markedly decreased urinary protein excretion levels, serum creatinine concentrations and blood urea nitrogen concentrations in rats. Ori also significantly alleviated infiltration of inflammatory cells (cluster of differentiation (CD)68) in kidney tissues and reduced the levels of pro-inflammatory cytokines, including tumor necrosis factor-alpha (TNF-alpha), interleukin-6 (IL-6), IL-1beta and monocyte chemotactic protein 1 (MCP-1), both in vivo and in vitro. TLR4 is a principal mediator of innate immune and inflammatory responses and participates in the development of DN. Our molecular studies indicated that Ori administration significantly down-regulated TLR4 overexpression in DN. Additional studies were conducted to investigate the effect of Ori on the p38-mitogen-activated protein kinase (p38-MAPK) and nuclear factor (NF)-kappaB pathways. The results showed that Ori inhibited IkappaBalpha, p65, and p38 phosphorylation, as well as NF-kappaB DNA-binding activity. In conclusion, these results demonstrated that Ori exerts protective effects in diabetes-induced renal injury in vivo and in vitro. These effects may be ascribed to its anti-inflammatory and modulatory effects on the TLR4/p38-MAPK and TLR4/NF-kappaB signaling pathways. CI - Copyright (c) 2017 Elsevier B.V. All rights reserved. FAU - Li, Jushuang AU - Li J AD - Department of Nephrology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China. FAU - Bao, Liping AU - Bao L AD - Department of Nephrology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China. FAU - Zha, Dongqing AU - Zha D AD - Department of Nephrology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China. FAU - Zhang, Lian AU - Zhang L AD - Department of Nephrology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China. FAU - Gao, Ping AU - Gao P AD - Department of Nephrology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China. FAU - Zhang, Juan AU - Zhang J AD - Department of Nephrology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China. FAU - Wu, Xiaoyan AU - Wu X AD - Department of Nephrology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China. Electronic address: ZN000081@whu.edu.cn. LA - eng PT - Journal Article DEP - 20171205 PL - Netherlands TA - Int Immunopharmacol JT - International immunopharmacology JID - 100965259 RN - 0 (Anti-Inflammatory Agents) RN - 0 (Cytokines) RN - 0 (Diterpenes, Kaurane) RN - 0 (Inflammation Mediators) RN - 0 (NF-kappa B) RN - 0 (Tlr4 protein, rat) RN - 0 (Toll-Like Receptor 4) RN - 0APJ98UCLQ (oridonin) RN - AYI8EX34EU (Creatinine) RN - EC 2.7.11.24 (p38 Mitogen-Activated Protein Kinases) SB - IM EIN - Int Immunopharmacol. 2024 Jan 5;126:111252. PMID: 38040552 MH - Animals MH - Anti-Inflammatory Agents/*therapeutic use MH - Cells, Cultured MH - Creatinine/blood MH - Cytokines/metabolism MH - Diabetes Mellitus, Experimental/*drug therapy MH - Diabetic Nephropathies/*drug therapy MH - Disease Models, Animal MH - Diterpenes, Kaurane/*therapeutic use MH - Humans MH - Inflammation Mediators/metabolism MH - Isodon/immunology MH - Kidney/*drug effects/metabolism/pathology MH - Male MH - NF-kappa B/metabolism MH - Rats MH - Rats, Sprague-Dawley MH - Signal Transduction MH - Toll-Like Receptor 4/metabolism MH - p38 Mitogen-Activated Protein Kinases/metabolism OTO - NOTNLM OT - Diabetic nephropathy OT - Inflammatory response OT - NF-kappaB OT - Oridonin OT - TLR4 OT - p38-MAPK EDAT- 2017/12/06 06:00 MHDA- 2018/08/21 06:00 CRDT- 2017/12/06 06:00 PHST- 2017/09/24 00:00 [received] PHST- 2017/11/22 00:00 [revised] PHST- 2017/11/28 00:00 [accepted] PHST- 2017/12/06 06:00 [pubmed] PHST- 2018/08/21 06:00 [medline] PHST- 2017/12/06 06:00 [entrez] AID - S1567-5769(17)30460-5 [pii] AID - 10.1016/j.intimp.2017.11.040 [doi] PST - ppublish SO - Int Immunopharmacol. 2018 Feb;55:9-19. doi: 10.1016/j.intimp.2017.11.040. Epub 2017 Dec 5.