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Association of plasma vitamin A level with type 2 diabetes mellitus:a community aging population-based cross-sectional study
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作者 Pengfei Li Jingjing Xu +7 位作者 Yujie Guo Xiaojun Ma shaobo zhou Chi Zhang Huiyan Yu Ying Wang Xixiang Wang Linhong Yuan 《Food Science and Human Wellness》 SCIE CAS CSCD 2024年第4期2079-2089,共11页
Recent studies indicated that vitamin A(VA)might be involved in the pathology of type 2 diabetes mellitus(T2DM).This cross-sectional study was conducted to explore the association between circulating VA level and T2DM... Recent studies indicated that vitamin A(VA)might be involved in the pathology of type 2 diabetes mellitus(T2DM).This cross-sectional study was conducted to explore the association between circulating VA level and T2DM.A total of 1818 subjects aged 50 years old and above were recruited from the community.Binomial logistic regression and restricted cubic spline(RCS)were applied to analyze the association of plasma VA level with the risk of T2DM.Serum VA and lipid-adjusted VA levels of T2DM patients were significantly higher than that of non-T2DM subjects(P<0.05).The ratios of plasma VA/total cholesterol(TC),VA/high-density lipoprotein cholesterol(HDL-c)and VA/low-density lipoprotein cholesterol(LDL-c)were positively associated with the risk of T2DM in the aging population(P<0.05).Compared with the Q1 level,subjects with Q2 to Q3 levels of plasma VA/triglyceride(TG)have decreased risk of T2DM(odds ratio(OR)Q2=0.68,P_(Q2)=0.021;ORQ3=0.59,P_(Q3)<0.01).Our results indicated that the imbalance of circulating lipids and VA might affect the relationship between VA and T2DM.The middle and aging subjects with higher ratios of plasma VA/TC,VA/HDL-c,and VA/LDL-c displayed increased risk for T2DM,but the moderate ratio of VA/TG might protect against risk of T2DM. 展开更多
关键词 Type 2 diabetes mellitus Vitamin A LIPID NUTRITION Disease prevention
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基于PINK1/parkin信号转导通路研究灵芝孢子对糖尿病心肌损伤的保护作用 被引量:1
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作者 吴岚 齐亚灵 +5 位作者 程明勋 王勤书 石瑞平 王淑秋 shaobo zhou 葛子正 《中国老年学杂志》 CAS 北大核心 2023年第16期3982-3987,共6页
目的探讨灵芝孢子对糖尿病(DM)大鼠心肌损伤的保护作用及对PTEN诱导假定激酶(PINK)1/帕金森病蛋白(parkin)信号通路的作用机制。方法将40只雄性SD大鼠随机分成对照(NC)组、高脂高糖饮食(HFD)组、DM组和灵芝孢子(GLS)组各10只。12 w末,... 目的探讨灵芝孢子对糖尿病(DM)大鼠心肌损伤的保护作用及对PTEN诱导假定激酶(PINK)1/帕金森病蛋白(parkin)信号通路的作用机制。方法将40只雄性SD大鼠随机分成对照(NC)组、高脂高糖饮食(HFD)组、DM组和灵芝孢子(GLS)组各10只。12 w末,记录各组末次体质量及空腹血糖。麻醉处死大鼠后,采集心脏组织,计算心脏指数,并检测丙二醛(MDA)及超氧化物歧化酶(SOD)含量。苏木素-伊红染色(HE)和马松(Masson)染色观察心脏病理学变化。Western印迹检测PINK1/parkin通路蛋白、自噬相关蛋白及凋亡相关蛋白,免疫组织化学技术验证PINK1、parkin的表达水平,脱氧核糖核苷酸末端转移酶介导的缺口末端标记法(TUNEL)染色评估细胞凋亡情况。结果与NC组相比,HFD组体质量明显增加,DM组体质量明显减轻,血糖水平明显升高(P<0.05);HFD组和DM组心脏指数、MDA含量、PINK1、parkin、p-parkin、微管相关蛋白轻链(LC)3、B细胞淋巴瘤(Bcl)-2同源结构域蛋白抗体(beclin)1、Bcl-2相关X蛋白(Bax)/Bcl-2蛋白表达水平、心肌细胞凋亡率及血管周围胶原含量明显增加,SOD活性、p62蛋白表达水平显著下降(均P<0.05)。与DM组相比,HFD组和GLS组体质量、SOD活性、p62蛋白表达水平明显增加,血糖水平、心脏指数、MDA含量、PINK1、parkin、p-parkin、LC3、beclin1、Bax/Bcl-2蛋白表达水平、心肌细胞凋亡率、血管周围胶原含量明显降低(均P<0.05)。结论灵芝孢子可减轻DM大鼠心肌损伤,改善纤维化程度,具有良好的抗氧化活性,可逆转心肌细胞过度自噬,抑制细胞凋亡,其保护作用可能与下调PINK1/parkin信号通路有关。 展开更多
关键词 糖尿病心肌病 灵芝孢子 PTEN诱导假定激酶(PINK)1/帕金森病蛋白(parkin) 氧化应激
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