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·912· http: //www.chinagp.net E-mail: zgqkyx@chinagp.net.cn March 2023, Vol.26 No.8
hepatokine,which is considered to be strongly related to diabetes,obesity and insulin resistance. Objective To assess the
relationship between serum EDA level and the risk of NAFLD in patients with T2DM. Methods One hundred and thirty T2DM
patients,including 74 males(56.92%)and 56 females(43.08%),with a mean age of(55.6±12.4)years,were recruited
from Department of Endocrinology,Affiliated Hospital of Jiangsu University between November 2017 and November 2020.
Baseline data,results of glucose tolerance test,insulin response test,C-peptide response to glucagon test,and color Doppler
ultrasound of the abdomen were collected. Baseline data were compared between patients with ultrasound-detected NAFLD(n=80)
and those without(n=50). Pearson correlation analysis was used to evaluate the correlation between serum EDA and the other
clinical and biochemical indices. Multiple linear regression analysis was used to explore the influencing factors of EDA level.
Multivariate Logistic regression analysis was used to explore the effect of EDA level on the risk of NAFLD. Results Compared
with non-NAFLD group,NAFLD group had much younger mean age,shorter mean duration of T2DM,but significantly higher
mean levels of BMI,fasting insulin(FIns),2-hour postprandial insulin responses(2 hIns),fasting C-peptide(FCP),2-hour
postprandial C-peptide(2 hCP),homeostasis model assessment of insulin resistance(HOMA-IR),triacylglycerol(TG),
alanine aminotransferase(ALT),aspartate aminotransferase(AST),blood uric acid(SUA),urea nitrogen(BUN),
and EDA level(P<0.05). Pearson correlation analysis showed that the serum EDA level was positively correlated with age,
FIns,2 hIns,HOMA-IR,and AST(r=0.222,0.186,0.233,0.204,0.189,P<0.05). Multiple linear regression analysis
showed that age〔β=1.957,95%CI(0.412,3.502),P=0.013〕,WHR〔β=-328.845,95%CI(-638.903,-18.788),
P=0.038〕,2 hIns〔β=0.523,95%CI(0.036,1.011),P=0.036〕 and AST〔β=2.148,95%CI(0.520,3.776),
P=0.010〕were independently associated with EDA(P<0.05). Multivariate Logistic regression analysis demonstrated that EDA
was still associated with NAFLD after adjusting for multiple confounding factors〔OR=1.006,95%CI(1.002,1.010),
P=0.007〕. Conclusion In T2DM patients with NAFLD,the level of serum EDA was significantly increased,and potentially
associated with elevated risk of NAFLD,which suggests that serum EDA level may play a role in the development of NAFLD in
T2DM. Our study may provide a theoretical basis for early screening or treatment of NAFLD.
【Key words】 Diabetes mellitus,type 2;Non-alcoholic fatty liver disease;Ectodysplasin A;Insulin resistance;
Hepatokine;Risk factors;Correlation study
随着生活水平的不断提高,非酒精性脂肪性肝病 入,2017 年,AWAZAWA 等 [9] 发现了该基因表达的新
(nonalcoholic fatty liver disease,NAFLD)的患病率逐年 功能——调节全身葡萄糖代谢,并导致骨骼肌胰岛素敏
攀升,有研究表明,全球约 25% 的成年人受到 NAFLD 感性受损,被认为是一种肝脏因子;该研究结果表明,
的困扰,总人数高达 10 亿 [1] 。NAFLD 常出现单纯脂 高脂饮食小鼠和 db/db 小鼠的肝脏和血清 EDA 水平显
肪变性,进行性出现脂肪性肝炎,进一步发展为肝硬化 著升高;此外,还发现 EDA 的过度表达加剧了小鼠的
和 / 或肝细胞癌,因此成为肝脏相关疾病发病率和死亡 糖耐量受损,敲除 EDA 能显著改善小鼠骨骼肌胰岛素
率增高的主要原因 [2] 。NAFLD 常与血脂异常、胰岛素 敏感性。目前鲜有研究探讨 EDA 与 T2DM 的关系,亦
抵抗、肥胖、高血压、糖尿病等代谢紊乱疾病并发,被 未见 T2DM 合并 NAFLD 人群中血清 EDA 水平的有关研
认为是代谢综合征的主要特征 [3] 。有研究表明,2 型 究。本研究拟探讨 T2DM 患者中血清 EDA 水平与各指
糖尿病(T2DM)是 NAFLD 发生和发展的危险因素,其 标的相关性及 T2DM 患者血清 EDA 水平与 NAFLD 发生
可能加重患者的血脂代谢紊乱,增加心血管疾病的发生 风险的相关性,为 NAFLD 早期筛查及治疗提供新的理
率 [4] 。 论依据。
近年来有研究发现,多种肝脏因子均参与了糖尿 1 对象与方法
病、肥胖、代谢综合征和 NAFLD 的发生、发展,并可 1.1 研究对象 选取 2017 年 11 月至 2020 年 11 月于
能作为新的诊断性生物标志物来阐明代谢紊乱的发生机 江苏大学附属医院内分泌科就诊的 T2DM 患者 130 例为
制 [5] 。Ectodysplasin A(EDA)基因位于染色体 Xq12- 研究对象,其中男 74 例(56.92%)、女 56 例(43.08%),
13,最初被认为是肿瘤坏死因子相关细胞因子家族的成 平 均 年 龄(55.6±12.4) 岁。 纳 入 标 准:(1) 符 合
员,属于Ⅱ型跨膜蛋白,可在内蛋白酶呋喃切割后分泌 T2DM 的诊断标准,参照美国糖尿病协会(ADA)颁布
到胞外结构域 [6] 。既往研究表明,EDA 在牙齿、头发 的糖尿病诊断标准 [10] ;(2)年龄>18周岁。排除标准:(1)
和汗腺等皮肤衍生结构的发育和维持中起着重要作用, 特殊类型糖尿病、1 型糖尿病、糖尿病急性并发症者;(2)
EDA 基因突变可导致 X 连锁少汗性外胚层发育不良 [7] 各种病毒性肝炎、自身免疫性疾病及遗传性肝炎、药物
和选择性非综合征性牙齿发育不全 [8] 。随着研究的深 性肝病者;(3)过量饮酒者;(4)妊娠和哺乳者;(5)