PMID- 32454819 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220414 IS - 1687-8337 (Print) IS - 1687-8345 (Electronic) IS - 1687-8337 (Linking) VI - 2020 DP - 2020 TI - SLC22A1 rs622342 Polymorphism Predicts Insulin Resistance Improvement in Patients with Type 2 Diabetes Mellitus Treated with Metformin: A Cross-Sectional Study. PG - 2975898 LID - 10.1155/2020/2975898 [doi] LID - 2975898 AB - BACKGROUND: Metformin is the most widely used oral antidiabetic agent and can reduce insulin resistance (IR) effectively. Organic cation transporter 1 (encoded by SLC22A1) is responsible for the transport of metformin, and ataxia-telangiectasia-mutated (ATM) is a gene relating to the DNA repair and cell cycle control. The aim of this study was to evaluate if the genetic variants in SLC22A1 rs622342 and ATM rs11212617 could be effective predictors of islet function improvement in patients with type 2 diabetes mellitus (T2DM) on metformin treatment. METHODS: This cross-sectional study included 111 patients with T2DM treated with metformin. Genotyping was performed by the dideoxy chain-termination method. The homeostatic indexes of IR (HOMA-IR) and beta-cell function (HOMA-BCF) were determined according to the homeostasis model assessment. RESULTS: Fasting plasma glucose (FPG) levels, HbA(1c) levels, and HOMA-IR were significantly higher in patients with the rs622342 AA genotype than in those with C allele (P < 0.05). However, these significant differences were not observed between rs11212617 genotype groups. Further data analysis revealed that the association between the rs622342 polymorphism and HOMA-IR was gender related, and so was rs11212617 polymorphism and HOMA-BCF. HOMA-IR was significantly higher in males with rs622342 AA genotype than in those with C allele (P=0.021), and HOMA-BCF value was significantly higher in females carrying rs11212617 CC genotype than in those with A allele (P=0.038). The common logarithm (Lg10) of HOMA-BCF was positively correlated with the reciprocal of HbA(1c) (r = 0.629, P < 0.001) and negatively associated with Lg10 FPG (r = -0.708, P < 0.001). CONCLUSIONS: The variant of rs622342 could be a predictor of insulin sensitivity in patients with T2DM treated with metformin. The association between the rs622342 polymorphism and HOMA-IR and the association between the rs11212617 polymorphism and HOMA-BCF were both gender related. CI - Copyright (c) 2020 Kunrong Wu et al. FAU - Wu, Kunrong AU - Wu K AUID- ORCID: 0000-0002-5828-841X AD - Department of Clinical Pharmacy, The First Affiliated Hospital of Shandong First Medical University, Ji'nan 250014, China. FAU - Li, Xiaoli AU - Li X AD - School of Pharmaceutical Sciences, Shandong First Medical University, Tai'an 271000, China. FAU - Xu, Yuedong AU - Xu Y AUID- ORCID: 0000-0001-5078-0234 AD - Department of Endocrinology and Metabology, The First Affiliated Hospital of Shandong First Medical University, Ji'nan 250014, China. FAU - Zhang, Xiaoqian AU - Zhang X AUID- ORCID: 0000-0002-8893-9789 AD - Department of Endocrinology and Metabology, The First Affiliated Hospital of Shandong First Medical University, Ji'nan 250014, China. FAU - Guan, Ziwan AU - Guan Z AD - Department of Clinical Pharmacy, The First Affiliated Hospital of Shandong First Medical University, Ji'nan 250014, China. FAU - Zhang, Shufang AU - Zhang S AD - School of Pharmaceutical Sciences, Shandong First Medical University, Tai'an 271000, China. FAU - Li, Yan AU - Li Y AUID- ORCID: 0000-0002-0039-4818 AD - Department of Clinical Pharmacy, The First Affiliated Hospital of Shandong First Medical University, Ji'nan 250014, China. LA - eng PT - Journal Article DEP - 20200508 PL - Egypt TA - Int J Endocrinol JT - International journal of endocrinology JID - 101516376 PMC - PMC7231067 COIS- No potential conflicts of interest relevant to this article were reported. EDAT- 2020/05/27 06:00 MHDA- 2020/05/27 06:01 PMCR- 2020/05/08 CRDT- 2020/05/27 06:00 PHST- 2020/01/11 00:00 [received] PHST- 2020/03/16 00:00 [revised] PHST- 2020/03/31 00:00 [accepted] PHST- 2020/05/27 06:00 [entrez] PHST- 2020/05/27 06:00 [pubmed] PHST- 2020/05/27 06:01 [medline] PHST- 2020/05/08 00:00 [pmc-release] AID - 10.1155/2020/2975898 [doi] PST - epublish SO - Int J Endocrinol. 2020 May 8;2020:2975898. doi: 10.1155/2020/2975898. eCollection 2020.