PMID- 32685032 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220415 IS - 1841-0987 (Print) IS - 1843-066X (Electronic) IS - 1841-0987 (Linking) VI - 16 IP - 1 DP - 2020 Jan-Mar TI - Quercetin and Isoquercitrin Inhibiting Hepatic Gluconeogenesis Through LKB1-AMPKalpha Pathway. PG - 9-14 LID - 10.4183/aeb.2020.9 [doi] AB - OBJECTIVE: To observe the impact of quercetin and isoquercitrin on gluconeogenesis in hepatocytes. METHODS: Mouse primary hepatocytes were cultured with lactic acid and pyruvic acid. After treatment with quercetin and isoquercitrin for 24 hours, the glucose concentration in the culture supernatant was determined. RT-PCR was used to detect the mRNAs of PEPCK, G6Pase, LKB1, and AMPKalpha. Protein levels of LKB1, AMPKalpha, and Thr172 phosphorylation were evaluated by Western blot. RESULTS: The glucose concentration in the gluconeogenesis group (GN) was significantly higher than in the control group (C), but the glucose concentrations in the high level quercetin(group 80Q) and high level isoquercitrin (group 80I) were significantly lower than in the group GN, P<0.01. In the group 80Q, and group 80I, the mRNA levels of PEPCK and LKB1were significantly lower than in the group GN (P<0.01), and the G6Pase mRNA were significantly lower than in the group GN (P<0.05). The protein levels of LKB1 and the phosphorylation of AMPKalpha Thr172 in the group 80Q, group 40I, and group 80I were higher than in the group GN. The effects of quercetin and isoquercitrin on LKB1 and AMPKalpha were similar to those of metformin. CONCLUSIONS: Quercetin and isoquercitrin inhibit gluconeogenesis in hepatocytes, which may be related to the LKB1 upregulation and phosphorylation of AMPKalpha. CI - (c)by Acta Endocrinologica Foundation. FAU - Chen, L AU - Chen L AD - Shanghai University of Traditional Chinese Medicine, Putuo Hospital, Dept. of Endocrinology, Shanghai, China. FAU - Shen, T AU - Shen T AD - Shanghai University of Traditional Chinese Medicine, Putuo Hospital, Dept. of Endocrinology, Shanghai, China. FAU - Zhang, C P AU - Zhang CP AD - Shanghai University of Traditional Chinese Medicine, Putuo Hospital, Dept. of Endocrinology, Shanghai, China. FAU - Xu, B L AU - Xu BL AD - Shanghai University of Traditional Chinese Medicine, Putuo Hospital, Dept. of Endocrinology, Shanghai, China. FAU - Qiu, Y Y AU - Qiu YY AD - Shanghai University of Traditional Chinese Medicine, Putuo Hospital, Dept. of Endocrinology, Shanghai, China. FAU - Xie, X Y AU - Xie XY AD - Shanghai University of Traditional Chinese Medicine, Putuo Hospital, Dept. of Endocrinology, Shanghai, China. FAU - Wang, Q AU - Wang Q AD - Shanghai University of Traditional Chinese Medicine, Putuo Hospital, Dept. of Endocrinology, Shanghai, China. FAU - Lei, T AU - Lei T AD - Shanghai University of Traditional Chinese Medicine, Putuo Hospital, Dept. of Endocrinology, Shanghai, China. LA - eng PT - Journal Article PL - Romania TA - Acta Endocrinol (Buchar) JT - Acta endocrinologica (Bucharest, Romania : 2005) JID - 101269720 PMC - PMC7363997 OTO - NOTNLM OT - AMP-activated protein kinase alpha (AMPKalpha) OT - gluconeogenesis OT - isoquercitrin OT - liver kinase B1 (LKB1) OT - quercetin EDAT- 2020/07/21 06:00 MHDA- 2020/07/21 06:01 PMCR- 2020/07/01 CRDT- 2020/07/21 06:00 PHST- 2020/07/21 06:00 [entrez] PHST- 2020/07/21 06:00 [pubmed] PHST- 2020/07/21 06:01 [medline] PHST- 2020/07/01 00:00 [pmc-release] AID - aeb.2020.9 [pii] AID - 10.4183/aeb.2020.9 [doi] PST - ppublish SO - Acta Endocrinol (Buchar). 2020 Jan-Mar;16(1):9-14. doi: 10.4183/aeb.2020.9.