Telomere length, telomerase activity and mechanisms change in patients with type 2 diabetes mellitus

2016 ◽  
Vol 62 (1) ◽  
pp. 16-24 ◽  
Author(s):  
Natalia Vasil'evna Brailova ◽  
Ekaterina Nail'evna Dudinskaya ◽  
Olga Nikolaevna Tkacheva ◽  
Marina Vladimirovna Shestakova ◽  
Irina Dmitrievna Strazhesko ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Diabetes Mellitus ◽  
Type 2 Diabetes ◽  
Type 2 Diabetes Mellitus ◽  
Telomere Length ◽  
Chronic Inflammation ◽  
Telomerase Activity ◽  
Control Group ◽  
Diabetic Patients

Aim.To study the association of chronic inflammation, oxidative stress with telomere biology in people with type 2 diabetes mellitus (T2DM).Material and Methods.A total 50 patients with T2D and without cardiovascular disease (CVD) and 139 people from control group were included in the study. All subjects were measured for carbohydrate metabolism; oxidative stress (malondialdehyde (MDA)); inflammation (C-reactive protein — CRP, fibrinogen, interleukin-6); lymphocyte telomere length, telomerase activity.Results.In diabetic patients telomeres were shorter than in controls (9.59±0.54 and 9.76±0.47; p=0.031), telomerase activity was lower (0.47±0.40 and 0.62±0.36; p=0.039), inflammation (CRP, elevated fibrinogen) was higher. All patients were divided by telomere length. In T2DM group CRP was higher in patients with «short» telomeres (7.39±1.47 and 3.59±0.58 mg/L; p=0.02). There were no significant differences in the level of chronic inflammation and oxidative stress in ‘long’ telomeres group: CRP 3.59±0.58 and 3.66±0.50 mg/L (p=0.93), MDA 2.81±0.78 and 3.24±0.78 mmol/l (p=0.08). Diabetic patients in «short» telomeres group had greater chronic inflammation: CRP 7.39±1.47 and 4.03±0.62 mg/L (p=0.046), increased fibrinogen, 0.371 and 0.159 (p=0.022). All patients were divided by telomerase activity. Severity of chronic inflammation was greatest in T2DM and the «low» activity of telomerase. There were relationship between telomere length and CRP in T2DM patients (r=–0.40; p=0.004).Conclusions. Chronic inflammation and cell aging were more pronounced in patients with T2DM. However, despite diabetes, signs of chronic inflammation were minimal in patients with «long» telomeres compared to healthy people. Perhaps long telomeres protect diabetic patients from the damaging effect of chronic inflammation.

Abstract 12022: Telomere Length, Telomerase Activity and Vascular Aging in Patients With Type 2 Diabetes Mellitus

Circulation ◽  
2015 ◽  
Vol 132 (suppl_3) ◽  
Author(s):  
Natalia Brailova ◽  
Ekaterina Dudinskaya ◽  
Valentina Pykhtina ◽  
Ekaterina Plochova ◽  
Irina Strazhesko ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Diabetes Mellitus ◽  
Type 2 Diabetes ◽  
Type 2 Diabetes Mellitus ◽  
Telomerase Activity ◽  
Cellular Aging ◽  
Healthy People ◽  
Diabetic Patients ◽  
Vascular Aging

Introduction: Type 2 diabetes mellitus (T2DM) contribute to vascular aging. The telomere length (TL) and telomerase activity (TA) are considered as biomarkers of cellular aging. TL and TA are insufficiently studied in diabetic patients. Hypothesis: Telomere biology is associated with vascular aging in diabetic patients. Methods: The study group included 50 patients with T2DM (mean age 58.4±7.83 years) and 139 healthy patients (mean age 57.45±8.14 years). All subjects were measured for TL and TA by quantitative polymerase chain reaction; oxidative stress marked by malondialdehyde (MDA); inflammation marked by C-reactive protein (CRP); arterial stiffness evaluated by pulse wave velocity (PWV); carotid intima-media thickness (IMT), plaque presence (PP) and endothelial dysfunction evaluated by flow-mediated endothelium-dependent vasodilation (FMV). Results: All patients were divided into 4 groups by the median of TL (9.75): «short» telomeres (T2DM+ (n=15) and T2DM- (n=63) and «long» telomeres (T2DM+ (n=35) and T2DM- (n=76)). Patients with T2DM and «long» TL had the state of vessels, oxidative stress, inflammation, TA as similar as in healthy people: PWV 11.54±3.57 (T2DM+) vs 10.98±1.83 m/s (T2DM-) ((=0.58), IMT 0.83±0.13 vs 0.76±0.16 mm (=0.13), PP 1.36±0.33 vs 1.23±0.20 (=0.79); MDA 2.81±0.78 vs 3.24±0.78 mkmol/l (=0.08); CRP 3.59±0.58 vs 3.66±0.50 mg/l (=0.93); TA 0.51±0.09 vs 0.60±0.05 (p=0.36). FMV was higher in diabetic patients: 11.87±3.36 vs 10.18±2.79 % (=0.049). In contrast patients with «short» TL and T2DM had more pronounced vascular aging, inflammation and lower TA than healthy people: PWV 13.48±3.24 vs 11.59±2.03 m/s (=0.003), IMT 0.95±0.17 vs 0.78±0.14 mm (<0.001), PP 2.23±0.27 vs 1.38±0.17 (=0.006), FMV 8.51±3.20 vs 11.04±3.01% (=0.0002; CRP 7.39±1.47 vs 4.03±0.62 mg/l (=0.046); TA 0.47±0.08 vs 0.62±0.07 (p=0.06). Conclusion: In patients with short telomeres and T2DM signs of vascular aging, chronic inflammation and cellular aging were more pronounced than in healthy people. In contrast, in patients with long telomeres and T2DM vascular changes, oxidative stress, chronic inflammation and TA were as similar as in healthy people. Perhaps long telomeres protect patients with T2DM from accelerated vascular aging.

ESTIMATION OF SERUM FERRITIN LEVELS IN TYPE 2 DIABETIC PATIENTS AND ITS RELATION WITH HbA1C LEVEL.

2019 ◽  
Vol 3 (8) ◽  
Author(s):  
Shah Namrata Vinubhai ◽  
Pardeep Agarwal ◽  
Bushra Fiza ◽  
Ramkishan Jat
Keyword(s):  
Diabetes Mellitus ◽  
Type 2 Diabetes ◽  
Type 2 Diabetes Mellitus ◽  
Blood Sugar ◽  
Serum Ferritin ◽  
Inflammatory Marker ◽  
Control Group ◽  
Diabetic Patients ◽  
Positive Correlation

Background: Serum ferritin is known as an index for body iron stores also as an inflammatory marker and it is influenced by several disease. We were looking for a correlation between HbA1c and S. Ferritin in type 2 DM. Methodology: The present study a total of 150 participants were enrolled of which 100 were confirmed cases of Type 2 Diabetes Mellitus and rest 50 age and sex matched healthy subjects constituted the control group. All were screened for HbA1c, Fasting blood sugar, Post prandial blood sugar and S.Ferritin. Results: A highly significant variation and positive correlation was observed with respect to S.Ferritin and HbA1c levels. Mean S.Ferritin was high in the subgroup with poor glycemic control. Conclusion: The fasting, post prandial sugar levels, HbA1c and S.Ferritin were significantly higher in the diabetic subjects. This study shows a positive correlation between HbA1c and S. Ferritin levels. So we can conclude that in diabetic patients S. Ferritin may serve as an independent marker of poor glycemic and metabolic control. Keywords: Serum ferritin, Type 2 Diabetes Mellitus, HbA1c.

scholarly journals Fermented pork fat (Sa-um) and lifestyle risk factors as potential indicators for type 2 diabetes among the Mizo population, Northeast India

2021 ◽  
Vol 40 (1) ◽  
Author(s):  
Freda Lalrohlui ◽  
Souvik Ghatak ◽  
John Zohmingthanga ◽  
Vanlal Hruaii ◽  
Nachimuthu Senthil Kumar
Keyword(s):  
Diabetes Mellitus ◽  
Risk Factors ◽  
Type 2 Diabetes ◽  
Type 2 Diabetes Mellitus ◽  
Cox Regression ◽  
Control Group ◽  
Diabetic Patients ◽  
Lifestyle Habits ◽  
Pork Fat

AbstractOver the last few decades, Mizoram has shown an increase in cases of type 2 diabetes mellitus; however, no in-depth scientific records are available to understand the occurrence of the disease. In this study, 500 patients and 500 healthy controls were recruited to understand the possible influence of their dietary and lifestyle habits in relation with type 2 diabetes mellitus. A multivariate analysis using Cox regression was carried out to find the influence of dietary and lifestyle factors, and an unpaired t test was performed to find the difference in the levels of biochemical tests. Out of 500 diabetic patients, 261 (52.3%) were males and 239 (47.7%) were females, and among the control group, 238 (47.7%) were males and 262 (52.3%) were females. Fermented pork fat, Sa-um (odds ratio (OR) 18.98), was observed to be a potential risk factor along with tuibur (OR 0.1243) for both males and females. Creatinine level was found to be differentially regulated between the male and female diabetic patients. This is the first report of fermented pork fat and tobacco (in a water form) to be the risk factors for diabetes. The unique traditional foods like Sa-um and local lifestyle habits like tuibur of the Mizo population may trigger the risk for the prevalence of the disease, and this may serve as a model to study other populations with similar traditional practices.

scholarly journals Fenofibrate decreased microalbuminuria in the type 2 diabetes patients with hypertriglyceridemia

2020 ◽  
Author(s):  
Xiaomeng Sun ◽  
Jia Liu ◽  
Guang Wang
Keyword(s):  
Diabetes Mellitus ◽  
Type 2 Diabetes ◽  
Type 2 Diabetes Mellitus ◽  
Treatment Group ◽  
Glycosylated Hemoglobin ◽  
Fasting Blood Glucose ◽  
Control Group ◽  
Diabetic Patients ◽  
Fenofibrate Treatment

Abstract Background: This study was to research the efficacy of fenofibrate in the treatment of microalbuminuria in the patients with type 2 diabetes mellitus (T2DM) and hypertriglyceridemia. Methods: Type 2 diabetic patients (56) with microalbuminuria and hypertriglyceridemia aged 30 to 75 were randomly divided into the fenofibrate treatment group(n=28) and the control group (n=28) for 180 days. Urinary microalbumin /creatinine ratio (UACR) and other metabolic parameters were compared at baseline, during treatment and after treatment. Results: After 180 days, the reduction of levels of fasting blood glucose (FBG) and glycosylated hemoglobin (HbA1c) in two groups were no differences. In treatment group, uric acid (UA) (296.42 ± 56.41 vs 372.46 ± 72.78), triglyceride (TG) [1.51(1.17, 2.06) vs 3.04(2.21, 3.29)], and UACR [36.45 (15.78,102.41) vs 129.00 (53.00, 226.25)] were significantly decreased compared with the baseline. The high-density lipoprotein cholesterol (HDL-C) levels were significantly increased (1.22 ± 0.26 vs 1.09 ± 0.24) compared with the baseline. The decrease in UACR [-44.05(-179.47, -12.16) vs -8.15(-59.69, 41.94)]in treatment group was significantly higher compared with the control group. The decrease in UACR was positively associated with the decreases in TG ( r = 0.447, P = 0.042) and UA ( r = 0.478, P = 0.024) after fenofibrate treatment. Conclusion: In the patients with hypertriglyceridemia and type 2 diabetes mellitus, fenofibrate can improve microalbuminuria and do not increase the deterioration of glomerular filtration rate

scholarly journals Glycaemic Regulation with Zinc Combination in Type 2 Diabetes Mellitus

2021 ◽  
pp. 33-37
Author(s):  
Gangaram Bhadarge ◽  
Pratibha Dawande ◽  
Nandkishor Bankar ◽  
Raunak Kotecha
Keyword(s):  
Oxidative Stress ◽  
Diabetes Mellitus ◽  
Type 2 Diabetes ◽  
Type 2 Diabetes Mellitus ◽  
Glycemic Control ◽  
Zn Deficiency ◽  
Diabetic Patients ◽  
Chronic Hyperglycemia ◽  
Low Levels

Introduction: Zn supplementation improved glutathione peroxidase enzyme activity and decreased malondialdehyde and nitric oxide levels in diabetic rats, revealing Zn's defensive effect against oxidative stress in type 2 diabetes. The investigators have discovered that consuming Zn increased liver function and protected pancreatic tissue from damage caused by diabetes. Since Zn also prevents chronic hyperglycemia, it helps to minimize oxidative stress caused by type 2 diabetes. Diabetes mellitus (DM) is a global health problem that affects more than 3 million people worldwide (16% of population). Chronic hyperglycemia causes oxidative stress in diabetic patients by the development of free radicals (oxidants) and lowering the antioxidant protection mechanism. Aim: Glycaemic Regulation with Zinc Combination in Type 2 Diabetes Mellitus. Materials and Methods: Faculty of Medicine and Diabetic Opd, Datta Meghe Mediсаl Соllege and Shаlinitаi Meghe Hоsрitаl аnd Reseаrсh Сenter, Nаgрur in соllаbоrаtion with Dаttа Meghe Institute оf Mediсаl Sсienсes Deemed to be University, Sаwаngi, Wаrdhа, Mаhаrаshtrа. Results: The mean Zn level was 12.213±2.342in all participants and 9.121±1.782 in the control group, whereas it was significantly low (9.121±1.782) in the diabetic group, and there was statistically significant difference in Zn levels between the controls and the diabetic group (P < 0.001).FBS, HbA1C, serum Zinc mean effects between control and patients showed statistically significant differences in type 2 diabetes mellitus (P <0.0001). Conclusion: Our findings show that people with diabetes have lower levels of Zn than healthy people. The cause and effect of the association between very low levels of Zn and the progression of diabetes, or diabetes that causes Zn deficiency, is still unknown. Low levels of Zn are associated with poor glycemic control, and poor glycemic control is a good indication of Zn deficiency, as there was a negative association between serum Zn and FBS and HBA1C. If diabetic patients have low glycemic regulation, a long history of diabetes, obesity, or are over the age of 50, we look to assess their levels in Zn so that Zn alternative treatment can begin to release oxidative stress in this high-risk group.

scholarly journals Relationship between homocysteine and non-dipper pattern in patients with type 2 diabetes mellitus

2012 ◽  
Vol 56 (5) ◽  
pp. 285-290 ◽  
Author(s):  
Serdal Korkmaz ◽  
Abdulkerim Yilmaz ◽  
Gürsel Yildiz ◽  
Fatih Kiliçli ◽  
Serhat Içağasioğlu
Keyword(s):  
Diabetes Mellitus ◽  
Blood Pressure ◽  
Type 2 Diabetes ◽  
Type 2 Diabetes Mellitus ◽  
Control Group ◽  
Diabetic Patients ◽  
Nocturnal Blood Pressure ◽  
Type 2 Dm ◽  
Significant Difference

OBJECTIVE: The rate of reduction of nocturnal blood pressure (NBP) is lesser than normal in patients with type 2 diabetes mellitus (type 2 DM). Hyperhomocysteinemia (HHC) disrupts vascular structure and function, no matter the underlying causes. The risk of development of vascular disease is greater in diabetic patients with hyperhomocysteinemia than in patients with normal homocystein levels. The aim of the study was to investigate whether there are differences of homocystein levels in dipper and non-dippers patients with type 2 DM. SUBJECTS AND METHODS: We compared 50 patients (33 females, 17 males) with type 2 DM and 35 healthy individuals (18 females, 17 males ) in a control group. Ambulatory blood pressure monitoring (ABPM) was performed and homocysteine levels were measured in all patients. RESULTS: We found that the percentage of non-dipper pattern was 72% in patients with type 2 DM and 57% in control group. In diabetic and control individuals, homocystein levels were higher in non-dipper (respectively 13.4 ± 8.1 µmol/L and 11.8 ± 5 µmol/L) than in dipper subjects (respectively, 11.8 ± 5.8 µmol/L and 10.1 ± 4.2 µmol/L), but there was no significant difference between the two groups (respectively, p = 0.545, p = 0.294). CONCLUSION: In both groups, homocystein levels were higher in non-dipper than in dipper participants, but there was no significant difference between the groups. High homocystein levels and the non-dipper pattern increases cardiovascular risk. Therefore, the relationship between nocturnal blood pressure changes and homocystein levels should be investigated in a larger study.

scholarly journals IMPROVEMENT IN OXIDATIVE STRESS AFTER DUODENOJEJUNOSTOMY IN AN EXPERIMENTAL MODEL OF TYPE 2 DIABETES MELLITUS

2016 ◽  
Vol 29 (suppl 1) ◽  
pp. 3-7 ◽  
Author(s):  
Cacio Ricardo WIETZYCOSKI ◽  
João Caetano Dallegrave MARCHESINI ◽  
Sultan AL-THEMYAT ◽  
Fabiola Shons MEYER ◽  
Manoel Roberto Maciel TRINDADE
Keyword(s):  
Oxidative Stress ◽  
Diabetes Mellitus ◽  
Type 2 Diabetes ◽  
Type 2 Diabetes Mellitus ◽  
Diabetic Rats ◽  
Diabetic Group ◽  
Control Group ◽  
Oral Glucose ◽  
Surgical Group

ABSTRACT Background: Type 2 Diabetes Mellitus is a multifactorial syndrome with severe complications. Oxidative stress is accepted as a causal factor of chronic complications Aim: To demonstrate alterations in oxidative stress after metabolic surgery. Methods: Twenty-four 2-day-old Wistar rats were used. In 16, Type 2 Diabetes Mellitus was induced by 100 mg/kg streptozotocin injection. The development of diabetes was confirmed after 10 weeks using an oral glucose tolerance test. Eight diabetic rats composed the diabetic surgical group; the remaining eight composed the diabetic group. Eight animals in which diabetes was not induced formed the clinical control group. The Marchesini technique was used in the diabetic surgical group. After 90 days, the rats were sacrificed, and the oxidative stress markers were measured. Results: Thiobarbituric acid reactive substances, superoxide dismutase and catalase were significantly reduced in the diabetic surgical group compared to the diabetic group. Conclusion: The duodenojejunostomy was effective in controlling the exacerbated oxidative stress present in diabetic rats.

scholarly journals Increased circulating levels of musclin in newly diagnosed type 2 diabetic patients

2017 ◽  
Vol 14 (2) ◽  
pp. 116-121 ◽  
Author(s):  
Wen-Jia Chen ◽  
Yue Liu ◽  
Yu-Bin Sui ◽  
Bo Zhang ◽  
Xiao-Hui Zhang ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
Insulin Resistance ◽  
Type 2 Diabetes ◽  
Type 2 Diabetes Mellitus ◽  
Plasma Levels ◽  
Control Group ◽  
Diabetic Patients ◽  
Model Assessment ◽  
Newly Diagnosed

Background: Musclin is a newly identified skeletal muscle–derived secretory factor, which has been recently characterized as a stimulator that induces insulin resistance in mice. However, the pathophysiological role of musclin in humans remains poorly understood. The aim of this study was to explore the potential correlations between musclin plasma levels and various metabolic parameters in patients with type 2 diabetes mellitus. Materials and methods: In this hospital-based study, plasma samples were collected from the enrolled individuals, including 38 newly diagnosed, treatment-naive type 2 diabetes mellitus patients and 41 age- and gender-matched control subjects. Plasma musclin levels were examined by radioimmunoassay. Results: Compared with the control group, musclin plasma levels were significantly higher in untreated type 2 diabetes mellitus patients. Musclin levels in the plasma of newly diagnosed type 2 diabetes mellitus patients were positively correlated with fasting plasma glucose, haemoglobin A1c, serum insulin, triglycerides and homeostasis model assessment of insulin resistance. Furthermore, multivariate logistic regression analysis showed that the level of musclin was associated with the presence of type 2 diabetes mellitus. Receiver operating characteristic curve analysis yielded an area under the curve for musclin of 0.718 in type 2 diabetes mellitus. Conclusion: The circulating concentration of musclin was significantly increased in type 2 diabetes mellitus patients. Our results suggest that musclin has a strong relationship with insulin resistance in type 2 diabetes mellitus.

scholarly journals Assessment of the Relationship between Diabetic Retinopathy and Nailfold Capillaries in Type 2 Diabetics with a Noninvasive Method: Nailfold Videocapillaroscopy

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Seyit Uyar ◽  
Ayşe Balkarlı ◽  
Muhammet Kazım Erol ◽  
Bayram Yeşil ◽  
Abdullah Tokuç ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
Type 2 Diabetes ◽  
Type 2 Diabetes Mellitus ◽  
Diabetic Retinopathy ◽  
Nailfold Capillaroscopy ◽  
Control Group ◽  
Diabetic Patients ◽  
Type 2 Diabetics ◽  
Nailfold Capillaries

Background and Objectives. Nailfold capillaroscopy is an easy and noninvasive technique used to investigate dermal microvasculature. Traditional investigations of vascularity do not detect changes until they are well-established in type 2 diabetics. The objective of the current study was to evaluate nailfold capillaries in type 2 diabetes mellitus patients and to determine the association of retinopathy with changes in the nailfold capillaries.Materials and Methods. Capillaroscopic findings by nailfold capillaroscopy and fundoscopic examinations were assessed in 216 patients with type 2 diabetes mellitus and 101 healthy controls included in this prospective study.Results. Retinopathy was detected in 43.05% of diabetic patients (n=93). Capillaroscopic findings including tortuosity (p<0.001), bushy capillary (p<0.001), neoformation (p<0.001), bizarre capillary (p<0.001), microhemorrhage (p=0.001), capillary ectasia (p=0.002), and aneurysm (p=0.004) were significantly higher in diabetic group than control group. In logistic regression analysis, only tortuosity was shown significant (OR, 2.16;p=0.036). There was also a significant relation between diabetes duration and most of the capillaroscopic findings.Conclusion. Capillaroscopic changes were found to be correlated with diabetic retinopathy, in particular with longer disease duration in our study. Capillaroscopic imaging could be a useful new technique for assessment of diabetic microvascular changes.

scholarly journals Association of Fibroblast Growth Factor 21 with Lipid Profile, MDA and AOPP in Patients with Type 2 Diabetes Mellitus

2021 ◽  
pp. 179-186
Author(s):  
P. Divya ◽  
R. Inmozhi Sivakamasundari ◽  
T. K. Jithesh ◽  
K. Santha ◽  
K. Shifa ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Diabetes Mellitus ◽  
Type 2 Diabetes ◽  
Type 2 Diabetes Mellitus ◽  
Growth Factor ◽  
Lipid Profile ◽  
Fibroblast Growth Factor 21 ◽  
Diabetic Patients ◽  
Fibroblast Growth

Background: Diabetes mellitus is rising all over the world due to population growth, aging, urbanisation, and the increase of obesity due to physical inactivity, characterized by persistent high blood glucose levels associated with aberrations in lipid, carbohydrate, and protein metabolisms leading to water and electrolyte imbalance. Cardiovascular diseases are the leading causes of mortality in diabetic patients. Mechanisms such as oxidative stress, lipid metabolism imbalance, as well as myocardial cell apoptosis are key factors to facilitate the progression of Diabetic cardiomyopathy. Aim: The aim of this study was to assess FGF-21 levels and their association with lipid profile parameters and oxidative stress in patients with type 2 diabetes mellitus. Methods: A patient based cross-sectional study was conducted among the subjects with history of type 2 DM for the past 10 years. Results: Variations in FBS, T.C, TG, LDL, HDL, VLDL, FGF-21, MDA and AOPP levels among cases and controls were depicted in Table 2. There was an increase in all these parameters in cases compared to controls whereas HDL showed a decrease among cases. Conclusion: Our study concluded that there is a significant correlation between fibroblast growth factor 21 (FGF-21), oxidative stress, and abnormal lipid profile in type 2 diabetic patients. We would recommend further studies to explore the role of FGF21 as an important marker in predicting cardiovascular risk in diabetic patients.

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