scholarly journals CORRELATION BETWEEN APOB100/APOA1 RATIO AND INSULIN RESISTANCE IN TYPE 2 DIABETES MELLITUS

Author(s):  
SUCHETHA KUMARI N ◽  
SHILPA S SHETTY

Objective: Various lipid abnormalities are associated with Type 2 diabetes, thereby increasing the risk of cardiovascular disease and metabolic syndrome. The objective of the study is to correlate apolipoprotein ratio with insulin resistance (IR) to understand its role in Type 2 diabetes mellitus. Methods: The study population included 416 subjects of which 197 were non-diabetic and remaining 219 were non-diabetic and served as control subjects. Body mass index was calculated. Fasting plasma glucose, insulin, glycated hemoglobin levels, total cholesterol, triglyceride and high-density lipoprotein, ApoA-1, and ApoB-100 were measured using commercially available kits. Statistical analysis was performed with SPSS for Windows 16.0. Significance was defined as p<0.05. Results: Apolipoprotein A-1 levels were lower in the diabetic group whereas apolipoprotein B-100 levels, apolipoprotein ratios were higher in the diabetic group. ApoB100 and apolipoportein ratio showed a positive correlation with IR. Conclusions: The study results indicate that apolipoprotein B100/ApoA-1 ratio can act as a strong biomarker for IR.

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Yajing Li ◽  
Minli Chen ◽  
Hongzhuan Xuan ◽  
Fuliang Hu

The present study investigates the encapsulated propolis on blood glycemic control, lipid metabolism, and insulin resistance in type 2 diabetes mellitus (T2DM) rats. The animal characteristics and biological assays of body weight, fasting blood glucose (FBG), fasting serum insulin (FINS), insulin act index (IAI), triglycerides (TG), total cholesterol (TC), high-density lipoprotein cholesterol (HDL-C), and low-density lipoprotein cholesterol (LDL-C) were measured and euglycemic hyperinsulinemic glucose clamp technique were used to determine these effects. Our findings show that oral administration of encapsulated propolis can significantly inhibit the increasing of FBG and TG in T2DM rats and can improve IAI and M value in euglycemic hyperinsulinemic clamp experiment. There was no significant effects on body weight, TC, HDL-C, and LDL-C in T2DM rats treated with encapsulated propolis. In conclusion, the results indicate that encapsulated propolis can control blood glucose, modulate lipid metabolism, and improve the insulin sensitivity in T2DM rats.


2020 ◽  
Vol 6 (1) ◽  
pp. 122-128
Author(s):  
I. Madyanov

Hyperuricemia (HU) occurs in one third of patients with type 2 diabetes mellitus (DM 2). The formation of HU in DM 2 is due to metabolic factors and impaired renal function. At the stage of prediabetes, GU reveals a connection with insulin resistance (IR), it is not clear to what extent this phenomenon is associated with an increase in uricemia in DM 2. Direct assessment of IR in patients with DM 2 is difficult. There are methods for indirect estimation of IR based on the calculation of indices using the results of simple laboratory tests. These indices are based on the determination of fasting plasma levels of triglycerides (TG) and high-density lipoprotein cholesterol (HDL-C) — TG/HDL-C, TG and glucose — TyG index, as well as TG, HDL-C and glucose — MI (metabolic index). The aim of the study was to study the relationship in patients DM 2 between the main indicators of uric acid metabolism and the TG/HDL-C index, TyG index, and MI. 368 patients with DM 2 an average age of 55.8 years, and an average disease duration of 7.2 years were examined. There were 147 men, 221 women. The connection of uricemia with TG/HDL-C was established (Rs=0.2, p=0.03). In the non-insulin-dependent course of DM 2, uricemia was positively correlated with TG/HDL-C (Rs=0.21, p=0.03), negative relations of renal clearance of urates with TG/HDL-C (Rs=0.34, p=0.007) and fractional clearance of urates with TyG (Rs =−0.27, p=0.007) were recorded. In the insulin-dependent course of DM 2, a positive association of TyG with uricuria (Rs=0.44, p=0.03) and a negative correlation with GGFRT, the main enzyme for purine reuse (Rs=−0.44, p=0.03), were revealed. The results obtained do not contradict the previously established patterns of uric acid metabolism in DM 2. The conclusion is made on the feasibility of using the TG/HDL-C index as an indicator of metabolic disorders of uric acid and IR in DM 2. In the insulin-dependent course of DM2, TyG index becomes important, an increase in which is associated with increased catabolism of purines and their insufficient reutilization.


2019 ◽  
Vol 16 (2) ◽  
pp. 144-152 ◽  
Author(s):  
Safwaan Adam ◽  
Yifen Liu ◽  
Tarza Siahmansur ◽  
Jan H Ho ◽  
Shaishav S Dhage ◽  
...  

Background: Reaven originally described the clustering of insulin resistance/hyperinsulinaemia, obesity (particularly visceral), altered cytokine levels, glucose intolerance, hypertriglyceridaemia and low high-density lipoprotein cholesterol. Subsequently, a potentially highly atherogenic small, dense low-density lipoprotein was also reported. We have studied the effect of bariatric surgery on this and other risk factors for atherosclerosis. Methods: Forty patients (20 with type 2 diabetes mellitus) undergoing bariatric surgery were studied before and 1 year after bariatric surgery. Results: Twelve months after bariatric surgery, median body mass index had decreased from 49.5 to 36.5 kg/m2, fasting insulin from 21.3 to 7.8 mU/L and insulin resistance (homeostatic model assessment of insulin resistance) from 5.9 to 1.8 (all p < 0.001). Thirteen out of 20 patients had remission from type 2 diabetes mellitus. Highly sensitive C-reactive protein, interleukin-6, fasting triglycerides ( p < 0.001) and small, dense low-density lipoprotein ( p < 0.001) decreased, while high-density lipoprotein cholesterol increased ( p < 0.001) significantly, irrespective of having type 2 diabetes mellitus and/or being treated with statin therapy before surgery. Conclusion: The association between marked weight loss and change in insulin resistance and hyperinsulinaemia with the change in small, dense low-density lipoprotein and interleukin-6 warrants further investigation. Bariatric surgery provides a model for investigating the mechanisms linking insulin resistance/hyperinsulinaemia to atherosclerosis.


2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
Ping Wang ◽  
Huili Liu ◽  
Li Chen ◽  
Yingli Duan ◽  
Qunli Chen ◽  
...  

Glucokinase (GK) plays a critical role in the control of whole-body glucose homeostasis. We investigated the possible effects of a novel glucokinase activator (GKA), HMS5552, to the GK in rats with type 2 diabetes mellitus (T2DM). Male Sprague-Dawley (SD) rats were divided into four groups: control group, diabetic group, low-dose (10 mg/kg) HMS5552-treated diabetic group (HMS-L), and high-dose (30 mg/kg) HMS5552-treated diabetic group (HMS-H). HMS5552 was administered intragastrically to the T2DM rats for one month. The levels of total cholesterol, triglyceride, fasting plasma insulin (FINS), and glucagon (FG) were determined, and an oral glucose tolerance test was performed. The expression patterns of proteins and genes associated with insulin resistance and GK activity were assayed. Compared with diabetic rats, the FINS level was significantly decreased in the HMS5552-treated diabetic rats. HMS5552 treatment significantly lowered the blood glucose levels and improved GK activity and insulin resistance. The immunohistochemistry, western blot, and semiquantitative RT-PCR results further demonstrated the effects of HMS5552 on the liver and pancreas. Our data suggest that the novel GKA, HMS5552, exerts antidiabetic effects on the liver and pancreas by improving GK activity and insulin resistance, which holds promise as a novel drug for the treatment of T2DM patients.


2021 ◽  
Vol 7 (1) ◽  
pp. 60-68
Author(s):  
Ayyali Ambresh ◽  
Ram Chaitanya K

: The most prevalent form of the disease, type 2 Diabetes Mellitus is often asymptomatic in the early stages and it may remain undiagnosed for many years.The insulin resistance in the liver leads to failure of the hyperinsulinaemia to suppress the gluconeogenesis, which increases fasting glucose levels and decreases Postprandial hypertriglyceridemia results in a proatherogenic environment which leads to atherosclerosis and macrovascular complications in type 2 diabetes mellitus. It is believed that atherosclerosis is a postprandial phenomenon with respect to lipids, as we are in the postprandial state for most of the day. Increased glucose production in the liver occurs early in the course of diabetes, and it is likely in skeletal muscles after the onset of the insulin secretory abnormalities and the insulin resistance Due to the insulin resistance in the adipose tissue and obesity, the free fatty acid (FFA) flux from the adipocytes is increased, which in turn leads to an increase in lipid [very low-density lipoprotein (VLDL) and triglycerides] synthesis in the hepatocytes. This is responsible for the dyslipidaemia which is found in type2 diabetes mellitus [elevated triglycerides, reduced HDL, and increased low-density lipoprotein (LDL) particle.Individuals with type 2 diabetes mellitus are at increased risk of developing microvascular and macrovascular complications. Increased postprandial glucose (PPG) concentrations contribute to suboptimal glycemic control. : To correlate fasting and postprandial dyslipidemia with macrovascular complications of diabetes.: This is a cross-sectional study, wherein written informed consent was taken after giving detailed information to the participants regarding the study. Patients who were in the age group of 35-65 years, admitted in the Department of Medicine, RRMCH from November 2017 for next 18 months with Diabetes Mellitus who met a predefined inclusion and exclusion criteria were studied. The study was initiated after obtaining clearance from the institution's ethical committee.: IHD changes were found in 8 cases and 3 controls, LVH by voltage criteria was found in 15 cases and 8 controls. IHD changes found in cases and controls are 16% and 6% respectively. LVH changes found in cases and controls are 30% and 16% respectively.Abnormal 2D Echo findings in our study were mainly IHD and LVH. The occurrence of IHD was more in cases compared to controls with statistical significance(p&#60;0.05).Peripheral vascular disease in our study was found in 25 patients i.e.25% of the study group. In cases, it was found in 20 patients and in controls, it was found in 5 patients i.e. 40% and 10% respectively. The occurrence of PVD was more in cases compared to controls with statistical significance(p&#60;0.05).Stroke in our study is found in 7 patients i.e. 7% of the study group. In cases, it was found in 6 patients and in controls, it was found in 1 patient i.e. 12% and 2% respectively. : It could be said that there is an increase in the occurrence of postprandial dyslipidemia with increasing age, irregular treatment, increase in HbA1c, FBS ,PPBS and with the past history of HTN, CVA, PVD and IHD.All macrovascular complications (IHD, CVA, PVD) were found more in the case compared to controls with statistical significance. So it could be said that there is an increase in the occurrence of macrovascular complications with an increase in postprandial dyslipidemia.


2020 ◽  
Author(s):  
Li Jin ◽  
Yan Huang ◽  
Yangyang Li ◽  
Bo Xu ◽  
Cheng Hu ◽  
...  

Abstract Background: CYP2C8 and CYP2C9 are cytochrome P450 epoxygenases that metabolize arachidonic acid into epoxyeicosatrienoic acids (EETs). EETs are important lipid mediators with many beneficial effects in type 2 diabetes mellitus. In this study, we aimed to investigate the association of CYP2C8 and CYP2C9 variants with type 2 diabetes in a Chinese population. Methods: We genotyped 9 tag single nucleotide polymorphisms (SNPs) in CYP2C8 and 10 tag SNPs in CYP2C9 based on HapMap Chinese and Japanese data. Then, we genotyped the SNPs in a Chinese population that included 3410 type 2 diabetes patients and 3401 normal controls. The association between the SNPs and type 2 diabetes was analysed. Results: In the study population, we found that rs1819173 in the CYP2C9 gene region was associated with type 2 diabetes and the A allele was protective against type 2 diabetes (odds ratio: 0.840, 95% confidence interval (CI): 0.780-0.904, P=3.04×10-6). Haplotypes GT and AT (rs2071426-rs6583967) in CYP2C8 were associated with type 2 diabetes (P=0.049 and 0.038, respectively). On the other hand, an interaction effect between rs1819173 in CYP2C9 and rs12766752 in CYP2C8 on type 2 diabetes was found (P=0.003). What’s more, rs1819173 showed significant association with HDL-C (high-density lipoprotein cholesterol).Conclusions: Our results suggested that common SNPs in the CYP2C8 and CYP2C9 regions were associated with T2DM in a Chinese Han population.


Sign in / Sign up

Export Citation Format

Share Document