BACKGROUNDNumerous studies have investigated the association between adiponectin concentrations and diabetic retinopathy (DR) caused by type 2 diabetic mellitus. However, the results remain conflicting. We performed a meta-analysis to explore the relationship between adiponectin concentrations and risk of DR caused by type 2 diabetic mellitus from published articles.

METHODSA published literature search was performed through the PubMed, Cochrane Library, EMBASE, Science Citation Index Expanded database, Chinese CNKI, and Chinese Wan Fang databases for articles published in English and Chinese. Pooled standardized mean differences (SMDs) and 95% confidence intervals (95% CIs) were calculated using random or fixed effects model. Heterogeneity between studies was assessed using the Cochrane Q test and I(2) statistics.

RESULTSNineteen studies with a total of 1 545 cases and 1 502 controls were retrieved. The original meta-analysis found a significant difference in the adiponectin concentrations between the DR and non-DR (NDR) groups. After excluding the high heterogeneity studies, the second meta-analysis also demonstrated the significant association (SMD (95% CI) = -0.62 (-0.80 to -0.44), P = 0.0001). According to the available data, there was statistical significance in the adiponectin concentrations considering non-proliferative DR (NPDR) versus NDR, PDR versus NPDR in Chinese populations with high heterogeneity.

CONCLUSIONAdiponectin concentrations are correlated with DR; however, the relationship between adiponectin concentrations and DR needs more in-depth investigations with larger sample sizes.

Adiponectin ; blood ; Diabetes Mellitus, Type 2 ; complications ; Diabetic Retinopathy ; blood ; etiology

BACKGROUND: Current practice uses the latest measure of glycated hemoglobin (HbAlc) to facilitate clinical decision-making. Studies have demonstrated that HbAlc variability links the risk of death and complications of diabetes. However, the role of HbAlc variability is unclear in clinical practice. This systematic review summarized the evidence of visit-to-visit HbAlc variability regarding different metrics in micro- and macro-vascular complications and death in people with type 2 diabetes. METHODS: We searched PubMed, EMBASE (via OVID), and Cochrane Central Register (CENTRAL, via OVID) for studies investigating the association between HbAlc variability and adverse outcomes in patients with type 2 diabetes and performed random-effects meta-analysis stratified by HbAlc variability metrics in terms of standard deviation (SD), coefficient of variation (CV), and HbAlc variability score (HVS). RESULTS: In people with type 2 diabetes, the highest quantile of all three HbAlc variability metrics (HbAlc-standard deviation [HbAlc-SD], HbAlc-coefficient of variance [HbAlc-CV], and HVS) is associated with increased risks of all-cause mortality, cardiovascular events, progression to chronic kidney disease, amputation, and peripheral neuropathy. For example, the hazard ratio of HbAlc-SD on all-cause mortality was l.89 with 95% confidence interval (95% CI) l.46-2.45 (HbAlc-CV l.47, 95% CI l.26-l.72; HVS l.67, 95% CI l.34-2.09). CONCLUSIONS High HbAlc variability leads to micro- and macro-vascular complications of type 2 diabetes and related death. People with type 2 diabetes and high HbAlc variability need additional attention and care for the potential adverse outcomes.
Humans ; Adult ; Diabetes Mellitus, Type 2/complications* ; Glycated Hemoglobin ; Cardiovascular Diseases/etiology* ; Risk Factors ; Blood Glucose

This study was conducted to determine whether serum adipokine concentrations differed between healthy dogs and dogs with diabetes mellitus (DM). To accomplish this, 19 dogs with newly diagnosed DM were compared to 20 otherwise healthy dogs. The serum concentrations of visfatin, leptin, IL-1beta, IL-6, IL-18, and TNF-alpha were significantly higher in diabetic dogs than in healthy dogs, whereas the serum adiponectin concentrations were lower in diabetic dogs. However, there were no significant differences in the IL-10 and resistin levels between groups. The serum leptin concentrations in diabetic dogs with and without concurrent disorders differed significantly. Treatment with insulin induced a significant decrease in IL-6 in diabetic dogs without concurrent disorders. These results show that the clinical diabetic state of dogs could modulate the circulating visfatin and adiponectin concentrations directly, while upregulation of leptin was probably a result of concurrent disorders rather than an effect of persistent hyperglycemia as a result of DM.
Adipokines/*blood ; Animals ; Case-Control Studies ; Diabetes Mellitus, Type 2/*blood/etiology ; Dogs ; Female ; Male ; Pilot Projects ; Prospective Studies

<0.05). PP2h, fasting C-peptide and ratio of fasting insulin/C-peptide tend to be higher in hepatogenous DM than those of controls, but which were not statistically significant. CONCLUSIONS: The ratio of PP2h/FPG and fasting plasma insulin differentiated hepatogenous DM from the other type 2 DM. Insulin resistance in liver cirrhosis was higher than the other type 2 DM, and impaired hepatic insulin degradation might be an important mechanism of hyperinsulinemia in liver cirrhosis.
Adult ; Aged ; Blood Glucose/analysis ; Diabetes Mellitus/*diagnosis/*etiology ; Diabetes Mellitus, Type 2/*diagnosis ; Diagnosis, Differential ; Female ; Humans ; Insulin/blood ; Liver Cirrhosis/*complications ; Male ; Middle Aged

OBJECTIVETo observe the effect of Jianpi Wenshen Decoction (JWD) on serum gastrin, plasma motilin and somatostatin in patients of diabetic diarrhea (DD).

METHODSPatients with DD were randomly divided into two groups, the JWD group and the control group treated with Loperamide (LPA). Besides, a normal control group was set up. Changes of serum gastrin, plasma motilin and somatostatin were observed.

RESULTSBefore treatment, the levels of gastrin and motilin in both groups were higher and somatostatin lower than those in the normal control group. After 1 month treatment, levels of the three indices were restored in both group approaching the normal range with insignificance as compared with those in the normal control group (P > 0.05). Level of plasma motilin and serum gastrin showed an increasing trend along with the therapeutic effect elevation, while level of somatostatin showed a decreasing trend.

CONCLUSIONJWD could promote the recovery of the impaired function of vegetative nerve system in DD patients. At the same time, serum gastrin, plasma motilin and somatostatin may be taken as the indexes for evaluating the efficacy in treating DD.

Adult ; Aged ; Diabetes Mellitus, Type 1 ; complications ; Diabetes Mellitus, Type 2 ; blood ; complications ; drug therapy ; Diarrhea ; blood ; drug therapy ; etiology ; Drugs, Chinese Herbal ; therapeutic use ; Female ; Gastrins ; blood ; Humans ; Male ; Middle Aged ; Motilin ; blood ; Phytotherapy ; Somatostatin ; blood

Cholesterol, LDL ; blood ; Diabetes Mellitus, Type 2 ; complications ; Humans ; Hyperlipidemias ; blood ; drug therapy ; etiology ; Hypolipidemic Agents ; therapeutic use ; Simvastatin ; therapeutic use ; Triglycerides ; blood

OBJECTIVEThe strong relation between type 2 diabetes mellitus and obesity with acanthosis nigricans is widely concerned. This study investigated the pancreatic beta-cell function in obese children with acanthosis nigricans, so as to find out the role of insulin secretion and insulin resistance in obese children with acanthosis nigricans.

METHODSThirty-five obese children with acanthosis nigricans (19 males and 16 females with mean age 12.8 +/- 1.5 years) were enrolled in this study. Thirty-eight obese children (21 boys and 17 girls with mean age 11.9 +/- 2.6 years) and 39 normal children (20 boys and 19 girls with mean age 11.2 +/- 2.2 years) were recruited as obese and normal control groups. The levels of serum fasting insulin, C-peptide, proinsulin and true insulin were measured in all the subjects. The ratios of proinsulin/insulin and proinsulin/C-peptide were calculated. Homeostasis model assessment was applied to assess the status of insulin resistance and basic function of pancreatic beta-cell.

RESULTSThe levels of fasting insulin, C-peptide proinsulin, true insulin, the ratios of proinsulin/insulin and proinsulin/C-peptide, insulin resistance index and insulin secretion index of obese children with acanthosis nigricans, obese control children and normal control children were: 18.5 (5.0-60.5) pmol/L, 12.4 (6.1-35.8) pmol/L and 5.1 (2.0-32.8) pmol/L; 3.9 (1.3-14.0) microg/L, 2.4 (1.1-4.0) microg/L and 1.1 (1.0-4.2) microg/L; 28.8 (9.9-64.2) pmol/L, 9.5 (2.2-34.5) pmol/L and 4.2 (2.0-16.0) pmol/L; 33.0 (6.2-66.0) pmol/L, 10.6 (4.8-29.4) pmol/L and 4.5 (1.3-30.1) pmol/L; 1.2 (0.4-8.9), 0.9 (0.2-1.9) and 0.8 (0.4-2.0); 6.9 (2.5-36.6), 4.7 (1.2-12.3) and 3.6 (1.2-9.6); 5.0 (0.8-14.1), 2.6 (1.3-8.1) and 1.2(0.4-6.9); 303.3 (52.2-1,163.8), 213.6 (84.6-572.0) and 51.1 (19.1-561.4). The levels of fasting insulin, C-peptide, proinsulin, true insulin, the ratios of proinsulin/insulin and proinsulin/C-peptide, insulin resistance index and insulin secretion index in obese children with acanthosis nigricans were significantly higher than those in obese children (P < 0.001) and normal children (P < 0.001).

CONCLUSIONObese children with acanthosis nigricans had higher insulin resistance and pancreatic beta-cell dysfunction; acanthosis nigricans may be a skin sign of high risk of type 2 diabetes mellitus.

Acanthosis Nigricans ; complications ; Adolescent ; C-Peptide ; blood ; Child ; Diabetes Mellitus, Type 2 ; etiology ; Female ; Humans ; Insulin ; blood ; Insulin Resistance ; Islets of Langerhans ; physiopathology ; Male ; Obesity ; complications ; physiopathology ; Proinsulin ; blood

Aged ; Diabetes Mellitus, Type 2 ; complications ; Humans ; Male ; Middle Aged ; Neoplasm Grading ; Prostate-Specific Antigen ; blood ; Prostatic Neoplasms ; blood ; etiology ; pathology ; Retrospective Studies

OBJECTIVETo assess the association of glucokinase regulator protein (GCKR) gene polymorphisms and type 2 diabetes (T2D) among ethnic Uygurs from Xinjiang, China.

METHODSOne thousand and six T2D patients and 1004 healthy controls were recruited. The rs780094 genotype of the GCKR gene was determined with a Sequenom Mass ARRAY system.

RESULTSThe distribution of GCKR rs780094 AA, AG and GG genotypes were not statistically different between the two groups (P>0.05). After adjusting confounding factors, an association of rs780094 with T2D was observed in an additive and dominant model (OR=1.181, 95%CI: 1.021-1.366, P=0.025; OR=1.296, 95%CI: 1.043-1.610, P=0.019). The total cholesterol level was higher in AA carriers than GG and GA carriers (P<0.05).

CONCLUSIONThe AA genotype of the GCKR rs780094 polymorphism may increase the risk of T2D among ethnic Uygurs from Xinjiang.

Adaptor Proteins, Signal Transducing ; genetics ; China ; ethnology ; Cholesterol ; blood ; Diabetes Mellitus, Type 2 ; blood ; etiology ; genetics ; Genotype ; Humans ; Logistic Models ; Polymorphism, Genetic

OBJECTIVETo study the relationship between the serum levels of adipocyte fatty acid-binding protein (A-FABP) level and type 2 diabetes mellitus in a community population.

METHODSA total of 255 residents (aged 45-85 years) were randomly selected from 4 communities in Guangzhou to examine the fasting plasma glucose (FPG), 2-hour postprandial blood glucose (2hPG), glycosylated hemoglobin (HbA1c), body mass index (BMI), waist circumference (WC), hip circumference (HC), waist-to-hip ratio (WHR), blood pressure (BP), triglyceride (TG), cholesterol (TC), high-density lipoprotein cholesterol (HDL-C), and low-density lipoprotein cholesterol (LDL-C). The insulin resistance index (HOMA-IR) was calculated and enzyme-linked immunosorbent assay (ELISA) was used to determine serum A-FABP and fasting insulin (FINs) levels. The cases were divided into 3 groups according to blood glucose level, namely the normal group (group A, n=90), impaired glucose tolerance group (group B, n=85), and diabetic group (group C, n=80), and the A-FABP levels were compared between them.

RESULTSCompared with group A, the subjects in groups B and C showed significantly increased FPG, 2hPGh, HbA1C, HOMA-IR, systolic blood pressure (SBP), and waist circumference (P=0.000) as well as FINs, WHR, diastolic blood pressure (DBP) , TG, and HDL-C (P=0.038, 0.047, 0.01, and 0.046, respectively). Compared with group B, group C showed significantly higher FPG, 2hPG, HbA1c, TG, and SBP (P=0.00), with also higher levels of FINs, BMI, WC, DBP, and HDL-C (P=0.012, 0.006, 0.03, 0.019, and 0.029, respectively). A-FABP increased significantly in the order of group A, B, and C (P=0.00), and this result was not affected by the differences in age between the 3 groups (P>0.05). A-FABP level was positively correlated to FPB, 2hPG, FINS, WHR, BMI, WC, SBP, and HOMA-IR, but inversely to TG and HDL-C (P=0.00).

CONCLUSIONElevated serum A-FABP is closely related to glucose metabolism disorder, and A-FABP may serve as a useful marker for the occurrence and development of type 2 diabetes in the community population.

Adipocytes ; chemistry ; Aged ; Aged, 80 and over ; Diabetes Mellitus, Type 2 ; blood ; etiology ; Fatty Acid-Binding Proteins ; blood ; Female ; Humans ; Male ; Middle Aged ; Serum ; metabolism