脂联素和PAI-1与2型糖尿病合并冠心病关系的研究

单纯2型糖尿病（T2DM）40例、T2DM合并冠心病50例、正常健康人30例的研究结果显示T2DM组存在低脂联素和高纤溶酶原激活物抑制剂1（PAI-1）血症,T2DM合并冠心病组更显著.脂联素、PAI-1有望成为T2DM合并冠心病的预测因子.     

2型糖尿病纤溶系统变化与胰岛素抵抗的关系

目的探讨2型糖尿病患者纤溶活性变化与胰岛素抵抗之间的关系。方法采用酶联免疫吸附法测定63例2型糖尿病患者（包括无血管并发症组30例和有血管并发症组33例）和25例正常对照者血浆组织型纤溶酶原激活剂（t-PA）、纤溶酶原激活物抑制剂-1（PAI-1）含量,结合临床资料分析其变化趋势及影响因素。结果2型糖尿病患者血浆t-PA含量明显降低（P〈0．01）,而PAI-1含量明显升高（P〈0．01）,合并血管病变者,此变化更为显著（均P〈0．001）。多元逐步回归分析显示,HOMA模型胰岛素抵抗指数（HOMA—IR）是PAI-1升高的独立危险因素。结论2型糖尿病患者纤溶活性降低,胰岛素抵抗在降低其纤溶活性,并发血管病变中起了重要作用。     

Non alcoholic fatty liver disease and risk of incident diabetes in subjects who are not obese

Background and aims

It is not known whether non alcoholic fatty liver disease (NAFLD) is a risk factor for diabetes in non obese, non centrally-obese subjects. Our aim was to investigate relationships between fatty liver, insulin resistance and a biomarker score for liver fibrosis with incident diabetes at follow up, in subjects who were neither obese nor centrally-obese.

Beneficial effects of glucagon-like peptide 1 receptor agonists on glucose control,cardiovascular risk profile,and non-alcoholic fatty liver disease. An expert opinion of the Italian diabetes society

Patients with type 2 diabetes mellitus (T2DM) show an increased risk of cardiovascular diseases (CVD) and mortality. Many factors are implicated in the pathogenesis of CVD in patients with T2DM. Among the factors involved, chronic hyperglycemia and the cluster of CVD risk factors, such as dyslipidemia, hypertension, and obesity, play a major role. For many years, the control of hyperglycemia has been complicated by the fact that the use of many available drugs was associated with an increased risk of hypoglycemia. Paradoxically, hypoglycemia per se represents a risk factor for CVD. Recently, new drugs for the control of hyperglycemia have become available: many of them can determine a good control of hyperglycemia with minor risks of hypoglycemia. Among these new classes of drugs, glucagon-like peptide-1 receptor agonists (GLP-1RAs) offer many advantages. In addition to a strong anti-hyperglycemic action, they possess the ability to act on body weight and other relevant risk factors for CVD. Consistently, some of the GLP-1RAs have demonstrated, in RCT designed to assess their safety, to reduce the risk of major adverse cardiovascular events. Furthermore, GLP-1RAs possess properties useful to treat additional conditions, as the capability of improving liver damage in patients with NAFLD or NASH, highly prevalent conditions in people with T2DM.In this document, written by experts of the Italian diabetes society (SID), we will focus our attention on the therapy with GLP-1RAs in patients with T2DM, particularly on the effects on hyperglycemia, cardiovascular disease risk factors, NAFLD/NASH and CVD prevention.     

The association between COVID-19 and type 1 diabetes mellitus: A systematic review

Background/Aim: Various reports of the occurrence of type 1 diabetes mellitus (T1DM) in patients with COVID-19 have been published, denoting an association between both diseases. Therefore, we conducted this systematic review to summarize the prevalence of T1DM in COVID-19 patients and to identify the clinical presentations and outcomes in this patient population.Materials and methodsUp to 10/27/2020, Medline, Embase, cochrane and google scholar databases were searched for original studies investigating the association between COVID-19 and T1DM. A manual search was conducted to identify missing studies. The quality of included studies was analyzed by the National Institute of Health (NIH) risk of bias tool. Outcomes included length of hospital stay, hospitalization, intensive care unit (ICU) admission, diabetic ketoacidosis (DKA), severe hypoglycemia, and death.ResultsFifteen studies were included in the qualitative analysis. Included studies reported data of both adult and pediatric patients. The prevalence of T1DM in COVID-19 patients ranged from 0.15% to 28.98%, while the rate of COVID-19 in patients with T1DM ranged from 0% to 16.67%. Dry cough, nausea, vomiting, fever and elevated blood glucose levels were the most commonly reported presentations. The investigated outcomes varied widely among studied populations.ConclusionsThe prevalence of T1DM in patients with COVID-19 ranged from 0.15% to 28.98%. The most common presentation of COVID-19 in patients with T1DM included fever, dry cough, nausea and vomiting, elevated blood glucose and diabetic ketoacidosis. The outcomes of COVID-19 in terms of length of hospital stay, hospitalization, ICU admission, DKA rate, and severe hypoglycemia were reported variably in included studies. Due to the heterogeneous study populations and the presence of many limitations, more studies are still warranted to reach a definitive conclusion.     

Nonalcoholic fatty liver disease in patients with type 2 diabetes mellitus and its association with cardiovascular disease

Introduction

Non-alcoholic fatty liver disease (NAFLD) encompasses a wide spectrum of liver disease that ranges from hepatic steatosis to non-alcoholic steatohepatitis. Obesity and diabetes mellitus are the prime risk factors for NAFLD. The aim of this study was to find out the prevalence of NAFLD among patients with type 2 diabetes mellitus and to detect the association of NAFLD with cardiovascular disease in them.

2型糖尿病和非酒精性脂肪肝病患者的胰岛素抵抗和胰岛β细胞功能

目的 探讨2型糖尿病(T2DM)和非酒精性脂肪肝病(NAFLD)患者胰岛β细胞功能和胰岛素抵抗的特征.方法 206例研究对象根据是否有T2DM和NAFLD分为4组,采用肝脏胰岛素抵抗指数(HIR)、HOMA胰岛素抵抗指数(HOMA-IR)及Matsuda指数(MSI)评估胰岛素抵抗性,采用HOMA-β、早相及晚相胰岛素分泌指数评估胰岛β细胞功能.结果 NAFLD组和T2DM伴NAFLD组的HIR均显著高于对照组和T2DM组(4.13±0.64,4.03±0.69比3.52±0.78,3.53±0.64,P<0.05),T2DM伴NAFLD组的HOMA-IR显著高于T2DM和NAFLD组(3.35±2.69比2.31±1.39,2.40±1.55,P<0.05);NAFLD组的早相胰岛素分泌指标显著低于对照组(2.13±0.17比2.61±0.13,P<0.05),而T2DM组和T2DM伴NAFLD组的HOMA-β、早相及晚相胰岛素分泌指标均明显低于对照组(P<0.05).结论 NAFLD患者主要表现为肝脏胰岛素抵抗,其胰岛β细胞早相胰岛素分泌受损;T2DM患者存在胰岛素抵抗,其胰岛β细胞早、晚相胰岛素分泌功能均受损.当患者既有T2DM又有NAFLD时,胰岛素抵抗将更严重.     

2型糖尿病合并非酒精性脂肪性肝病与胰岛素抵抗及血脂代谢紊乱的关系

目的 分析2型糖尿病合并非酒精性脂肪性肝病( NAFLD)与胰岛素抵抗及血脂代谢紊乱之间的关系,并探讨诱发这些疾病的相关危险因素.方法 选取2型糖尿病患者200例,其中合并NAFLD者99例,未合并NAFLD者101例.测量身高、体重、腰围、臀围;检测肝酶、糖脂代谢指标,计算体重指数(BMI)、腰臀比以及改良的胰岛素C肽指数(HOMA-C肽),2组进行比较.结果 NAFLD组体重、BMI、腰围、臀围、丙氨酸氨基转移酶(ALT)、天门冬氨酸氨基转移酶、甘油三酯(TG)、总胆固醇、低密度脂蛋白胆固醇均明显增高(均P＜0.01),而年龄、病程、高密度脂蛋白胆固醇低于非NAFLD组(均P＜0.05).NAFLD组高脂血症尤以高TG血症发生率明显增加(P＜0.01).NAFLD组空腹和餐后1h血糖[(2.07±0.36对1.83±0.43) mmol/L,(14.04±3.96对12.59±3.90)mmol/L]、空腹及餐后1hC肽[(2.79±1.15对2.08±1.29) ng/ml,(1.33±0.45对1.12±0.54)ng/ml]、HbA1c[(2.09±0.33对1.96±0.28)％]、HOMA-C肽指数均明显增高(P＜0.05或P＜0.01).logistic 回归分析显示TG、BMI、ALT是2型糖尿病合并NAFLD的主要危险因素(P＜0.05或P＜0.01).结论 高TG血症、肥胖以及ALT升高增加2型糖尿病合并NAFLD的患病风险.     

非酒精性脂肪性肝病合并T2DM患者肠道菌群结构变化研究*

目的 探讨非酒精性脂肪性肝病(NAFLD)合并2型糖尿病(T2DM)患者肠道菌群结构的变化。方法 2018年6月～2020年7月我院诊治的NAFLD合并T2DM患者58例、NAFLD患者66例和健康人60例,采用二代基因测序技术,针对16 srRNA基因V3～V4高变序列进行扩增测序,通过与肠道菌群GENBA-NK数据库进行序列比对,分析肠道菌群的种类和结构。采用化学发光法测定血清空腹胰岛素(FINS),并计算稳态模型胰岛素抵抗(HOMA-IR)指数;采用ELISA法测定血清肿瘤坏死因子-α(TNF-α),采用免疫层析法测定血清超敏C反应蛋白(hs-CRP)。结果 NAFLD合并T2DM组粪拟杆菌门显著高于NAFLD组或健康人(P＜0.05),NAFLD组粪拟杆菌门又显著高于健康人(P＜0.05);NAFLD合并T2DM组粪厚壁菌门、柔嫩梭菌属、厌氧棍状菌属和布劳特菌属丰度均显著低于NAFLD组或健康人(P＜0.05),NAFLD组厚壁菌门、柔嫩梭菌属、厌氧棍状菌属和布劳特菌属丰度又均显著低于健康人(P＜0.05);NAFLD合并T2DM组HOMA-IR指数、血清TNF-α和hs-CRP水平分别为(2.8±1.3)、(52.3±11.7)ng/mL和(2.3±1.1)mg/L,显著高于NAFLD组【分别为(1.6±0.7)、(48.7±10.2)ng/mL和(1.6±0.9)mg/L,P<0.05】或健康人【分别为(1.3±0.3)、(33.2±8.4)ng/mL和(1.2±0.4)mg/L,P<0.05】。结论 NAFLD合并T2DM患者存在胰岛素抵抗和血清炎性因子水平的变化,而且肠道菌群结构也发生了显著的改变,需进一步研究其临床意义。     

肠道菌群代谢产物与胰岛素抵抗相关衰老疾病的研究进展

2型糖尿病(T2DM)和阿尔茨海默病(AD)都是与年龄相关的衰老性疾病,二者存在多种共同危险因素.肠道微生物通过多种代谢产物参与胰岛素生理机能的调控过程,在胰岛素抵抗(IR)发生发展中发挥重要的作用.该文从IR的角度,对肠道菌群代谢产物与T2DM及AD发病机制的内在联系作一综述.     

Fatty liver index and hepatic steatosis index for prediction of non‐alcoholic fatty liver disease in type 1 diabetes

Background and Aim

Little is known about the diagnostic value of hepatic steatosis index (HSI) and fatty liver index (FLI), as well as their link to metabolic syndrome in type 1 diabetes mellitus. We have screened the effectiveness of FLI and HSI in an observational pilot study of 40 patients with type 1 diabetes.

Methods

FLI and HSI were calculated for 201 patients with type 1 diabetes. Forty patients with FLI/HSI values corresponding to different risk of liver steatosis were invited for liver magnetic resonance study. In‐phase/opposed‐phase technique of magnetic resonance was used. Accuracy of indices was assessed from the area under the receiver operating characteristic curve.

Results

Twelve (30.0%) patients had liver steatosis. For FLI, sensitivity was 90%; specificity, 74%; positive likelihood ratio, 3.46; negative likelihood ratio, 0.14; positive predictive value, 0.64; and negative predictive value, 0.93. For HSI, sensitivity was 86%; specificity, 66%; positive likelihood ratio, 1.95; negative likelihood ratio, 0.21; positive predictive value, 0.50; and negative predictive value, 0.92. Area under the receiver operating characteristic curve for FLI was 0.86 (95% confidence interval [0.72; 0.99]); for HSI 0.75 [0.58; 0.91]. Liver fat correlated with liver enzymes, waist circumference, triglycerides, and C‐reactive protein. FLI correlated with C‐reactive protein, liver enzymes, and blood pressure. HSI correlated with waist circumference and C‐reactive protein. FLI ≥ 60 and HSI ≥ 36 were significantly associated with metabolic syndrome and nephropathy.

Conclusions

The tested indices, especially FLI, can serve as surrogate markers for liver fat content and metabolic syndrome in type 1 diabetes.     

Steatosis and hepatitis C virus: mechanisms and significance for hepatic and extrahepatic disease

Nonalcoholic fatty liver disease (NAFLD) and hepatitis C virus (HCV)-related liver disease are common in the general population, but their concurrence is 2- to 3-fold higher than would be expected by chance alone. In patients with chronic HCV infection, steatosis is attributable to a variable combination of the mechanisms considered to play a role in the pathogenesis of NAFLD--insulin resistance in the obese and in the lean subject--along with a direct effect of HCV on hepatic lipid metabolism that leads to triglyceride accumulation through inhibition of export proteins that are required for very low density lipoprotein (VLDL) assembly and secretion. Accumulating evidence suggests that steatosis contributes to the progression of fibrosis in HCV-related disease in a pattern similar to that observed in NAFLD. Potential mechanisms of this effect include the increased sensitivity of steatotic livers to oxidative stress and cytokine-mediated injury. Steatosis-related hepatic insulin resistance may also play a role through the profibrogenic effects of the compensatory hyperinsulinemia and provides a potential explanation for the association between HCV and type 2 diabetes mellitus. Indeed, an appreciation of the importance of fat in HCV has recently led to trials of adjuvant therapy for HCV directed at steatosis-associated disease mechanisms, with encouraging results reported for various modalities, including weight loss and antioxidants. Future therapy should be aimed at exploiting the interactions of HCV with host insulin and lipid metabolism, particularly in nonresponders to standard antiviral schedules.     

Relationship between lifestyle factors and nutritional status and non-alcoholic fatty liver disease among a group of adult Jordanians

Background and Study Aims

Non-alcoholic fatty liver disease (NAFLD) is one of the most common chronic liver diseases worldwide. NAFLD may progress from simple steatosis to nonalcoholic steatohepatitis, cirrhosis and finally decompensated liver failure. This study aims at assessing the relationship between lifestyle factors and nutrients intake and the development of non-alcoholic fatty liver disease (NAFLD) in a group of Jordanian adults 30–60?years of age.

Transthoracic echocardiographic abnormalities in asymptomatic diabetic patients: association with microalbuminuria and silent coronary artery disease

Aims

This study aimed to assess, on routine echocardiography, cardiac left ventricular (LV) disorders, their determinants and their role in the screening process of silent myocardial ischaemia (SMI) in asymptomatic diabetic patients.

Methods

A total of 586 asymptomatic diabetic patients with one or more additional cardiovascular risk factors, but no history of heart failure or myocardial infarction, prospectively underwent rest echocardiography and myocardial scintigraphy. Those with SMI (abnormal scintigraphy) were subsequently screened for angiographic coronary artery disease (CAD).

Results

LV hypertrophy, LV dilatation, systolic dysfunction and hypokinesia were found in 33.6, 8.6, 3.2 and 6.1%, respectively, of the study population. SMI was found in 156 (26.6%) patients, 55 of whom had silent CAD. On multivariate analysis, age (OR: 1.03 [1.00–1.05], P = 0.02), microalbuminuria (OR: 2.2 [1.4–3.2], P < 0.0001) and silent CAD (OR: 2.4 [1.3–4.6], P = 0.007) were predictive of LV hypertrophy. Creatinine clearance (OR: 0.97 [0.96–0.99], P = 0.002) and silent CAD (OR: 3.7 [1.3–10.0]) were associated with LV dilatation. LV systolic dysfunction was associated with microalbuminuria (OR: 3.8 [1.3–11.4], P = 0.02) and silent CAD (OR: 3.8 [1.1–12.6], P = 0.03). Hypokinesia was associated with retinopathy (OR: 2.4 [1.1–5.4], P = 0.04), microalbuminuria (OR: 2.3 [1.1–5.0], P = 0.04) and LV dilatation (OR: 3.0 [1.1–8.1], P = 0.03). In patients with SMI, the positive predictive value of LV hypertrophy associated with another echocardiographic abnormality (n = 19) for CAD was 63.2%.

Conclusion

LV hypertrophy was found in one-third of asymptomatic diabetic patients, while LV dilatation, systolic dysfunction or hypokinesia was seen in < 10%. The main predictors of LV abnormalities were microalbuminuria and silent CAD. The presence of LV hypertrophy with another abnormality should raise the possibility of the presence of silent CAD.     

IGF-1 contributes to liver cancer development in diabetes patients by promoting autophagy

Introduction and objectivesType 2 diabetes mellitus (T2DM) increases the occurrence and mortality of liver cancer. Insulin growth factor (IGF) plays a crucial role in the development of diabetes and liver cancer, and specifically, IGF-1 may be involved in the development of liver cancer with preexisting T2DM. Autophagy contributes to cancer cell survival and apoptosis. However, the relationship between IGF-1 and autophagy has rarely been evaluated. The purpose of this study was to investigate whether IGF-1 promotes the development of liver cancer in T2DM patients by promoting autophagy.Materials and methodsThirty-three hepatocellular carcinoma (HCC) patients with T2DM and 33 age-matched patients with HCC without T2DM were included in this study. We analyzed the expression of IGF-1 and autophagy-related LC3 and p62 mRNA and the prognosis of two groups. In vitro, we stimulated HepG2 cells with IGF-1 and then detected changes in autophagy and cell proliferation, apoptosis, and migration in the presence/absence of wortmannin, an autophagy inhibitor.ResultsIGF-1 promoted autophagy, resulting in inhibition of apoptosis and induction of growth and migration of HepG2 cells. Inhibition of autophagy by wortmannin impaired IGF-1 function. Higher expression of IGF-1 was detected in HCC patients with T2DM. IGF-1 expression was higher in liver cancer tissue compared to paracancerous tissue. Elevated IGF-1 was associated with a poor prognosis in patients with HCC.ConclusionsIGF-1 participates in the development of liver cancer by inducing autophagy. Elevated IGF-1 was a prognostic factor for patients with HCC, especially when accompanied by T2DM.     

Prevalence and associated metabolic factors of fatty liver disease in the elderly

Objective

The aim of this study was to investigate the metabolic risk factors for fatty liver disease in the elderly, and determine the prevalence of fatty liver disease in the elderly in Wuhan, central China.

Methods

The study was a case–control study based on all 4226 adults above 60 years of age from a cohort investigated in 2010–11 at the medical examination center of Zhongnan hospital, using 3145 randomly selected adults under 60 years of age from the same cohort as controls. Fatty liver disease (FLD) was identified with ultrasound imaging. The risk factors measured were body mass index (BMI), and plasma concentrations of alanine aminotransferase (ALT), aspartate aminotransferase (AST), total cholesterol (TC), triglyceride (TG), high-density lipoprotein (HDL), low density lipoprotein (LDL) and serum uric acid (SUA). The probability of steatohepatitis with advanced fibrosis was predicted using a score based on BMI, age, ALT, and TG (BAAT),and using AST/ALT ratio (AAR).

Results

FLD was higher in the elderly (26.7%) than in the non-elderly (22.8%) and similar in the elderly between men and women (26.6% vs 27.0%, p > 0.05). BMI, TC, TG, LDL, SUA, AST and ALT were all significantly higher in FLD, whereas the level of HDL was markedly lower. Multiple regression analyses showed that obesity, high TC, TG, SUA, low HDL, and elevated ALT, AAR < 1 were closely related to the elderly FLD, while male sex, obesity, high TC, TG, low HDL, elevated ALT, AST and AAR < 1 were closely related to the non-elderly FLD. The prevalence of steatohepatitis with advanced fibrosis estimated as BAAT index ≥ 3 was 2.4% in all subjects, and was higher in the elderly FLD patients than in the non-elderly FLD patients.

Conclusion

The prevalence of FLD is higher in the elderly, and is broadly related to the same metabolic risk factors as in the non-elderly. However, female-sex is no longer protective with increasing age, and the prevalence of steatohepatitis with advanced fibrosis is estimated to be considerably higher in the elderly FLD patients than in the non-elderly FLD controls.