PMID- 33417956 OWN - NLM STAT- MEDLINE DCOM- 20210305 LR - 20240226 IS - 1879-0631 (Electronic) IS - 0024-3205 (Linking) VI - 268 DP - 2021 Mar 1 TI - Glabridin inhibits osteoarthritis development by protecting chondrocytes against oxidative stress, apoptosis and promoting mTOR mediated autophagy. PG - 118992 LID - S0024-3205(20)31752-5 [pii] LID - 10.1016/j.lfs.2020.118992 [doi] AB - Osteoarthritis (OA) is a common chronic degenerative disease that affects the elderly. Thus far, no pharmacological therapy approved by regulators has shown a convincing effect on OA. Glabridin, a small molecule, is a well-known and powerful natural antioxidant, which has a strong scavenging effect on free radicals. This study attempted to explore the role and underlying mechanisms of Glabridin on OA both in vitro and in vivo. In the in vitro study, Glabridin was found to increase the expression levels of extracellular matrix (ECM) related genes, Collagen II, Aggrecan (ACAN), SRY-box 9 (SOX9) and proteoglycan 4 (PRG4). Moreover, Glabridin was observed to significantly reduce the level of oxidative stress in OA chondrocytes while effectively reducing the apoptosis of chondrocytes. Glabridin was also found to significantly increase the autophagy of human OA chondrocytes. During the in vivo study, intraarticular injection of Glabridin was observed to alleviate OA progression and protect chondrocytes against apoptosis following anterior cruciate ligament transection (ACLT) in rats. Furthermore, the mammalian target of rapamycin (mTOR) mediated autophagy was identified as one of the potential mediators of Glabridin activity. Overall, Glabridin protects articular cartilage from damage in rats with OA by protecting chondrocytes against oxidative stress, apoptosis and promoting mTOR mediated autophagy. CI - Copyright (c) 2020. Published by Elsevier Inc. FAU - Dai, Jihang AU - Dai J AD - Dalian Medical University, Dalian 116044, Liaoning, China; Department of Orthopedics, Northern Jiangsu People's Hospital Affiliated to Yangzhou University, Yangzhou, Jiangsu, China. FAU - Zhang, Yaxin AU - Zhang Y AD - Dalian Medical University, Dalian 116044, Liaoning, China. FAU - Chen, Deng AU - Chen D AD - Dalian Medical University, Dalian 116044, Liaoning, China. FAU - Chen, Duoyun AU - Chen D AD - Dalian Medical University, Dalian 116044, Liaoning, China. FAU - Li, Xiaolei AU - Li X AD - Department of Orthopedics, Northern Jiangsu People's Hospital Affiliated to Yangzhou University, Yangzhou, Jiangsu, China. FAU - Wang, Jingcheng AU - Wang J AD - Department of Orthopedics, Northern Jiangsu People's Hospital Affiliated to Yangzhou University, Yangzhou, Jiangsu, China. Electronic address: jingchengwyz@163.com. FAU - Sun, Yu AU - Sun Y AD - Department of Orthopedics, Northern Jiangsu People's Hospital Affiliated to Yangzhou University, Yangzhou, Jiangsu, China. Electronic address: docsunyu@126.com. LA - eng PT - Journal Article DEP - 20210105 PL - Netherlands TA - Life Sci JT - Life sciences JID - 0375521 RN - 0 (Extracellular Matrix Proteins) RN - 0 (Isoflavones) RN - 0 (Phenols) RN - 0 (Reactive Oxygen Species) RN - EC 1.11.1.6 (Catalase) RN - EC 1.15.1.1 (Superoxide Dismutase) RN - EC 2.7.1.1 (MTOR protein, human) RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) RN - HOC5567T41 (glabridin) SB - IM MH - Animals MH - Anterior Cruciate Ligament/pathology MH - Apoptosis/drug effects MH - Autophagy/drug effects MH - Cartilage, Articular/pathology MH - Catalase/metabolism MH - Chondrocytes/*drug effects/metabolism/pathology MH - Extracellular Matrix Proteins/genetics MH - Humans MH - Injections, Intra-Articular MH - Isoflavones/administration & dosage/*pharmacology MH - Male MH - Osteoarthritis, Knee/*drug therapy/etiology/metabolism/pathology MH - Oxidative Stress/*drug effects/physiology MH - Phenols/administration & dosage/*pharmacology MH - Rats, Sprague-Dawley MH - Reactive Oxygen Species/metabolism MH - Superoxide Dismutase/metabolism MH - TOR Serine-Threonine Kinases/metabolism MH - Rats OTO - NOTNLM OT - Apoptosis OT - Autophagy OT - Glabridin OT - Osteoarthritis OT - Oxidative stress EDAT- 2021/01/09 06:00 MHDA- 2021/03/06 06:00 CRDT- 2021/01/08 20:12 PHST- 2020/10/13 00:00 [received] PHST- 2020/12/29 00:00 [revised] PHST- 2020/12/29 00:00 [accepted] PHST- 2021/01/09 06:00 [pubmed] PHST- 2021/03/06 06:00 [medline] PHST- 2021/01/08 20:12 [entrez] AID - S0024-3205(20)31752-5 [pii] AID - 10.1016/j.lfs.2020.118992 [doi] PST - ppublish SO - Life Sci. 2021 Mar 1;268:118992. doi: 10.1016/j.lfs.2020.118992. Epub 2021 Jan 5.