scholarly journals MicroRNA profile analysis in pericoronary adipose tissue of diabetic patients with significant coronary artery disease

2021 ◽  
Vol 42 (Supplement_1) ◽  
Author(s):  
M Marketou ◽  
A Plevritaki ◽  
J Kontaraki ◽  
P Kalogerakos ◽  
G Kochiadakis ◽  
...  

Abstract Background Pericoronary adipose tissue (PCAT) regulates arterial homeostasis, is considered to act in paracrine manner,and plays a role in the pathogenesis of atherosclerosis. PCAT may be a source of microRNAs (miRs) that target other tissues and act as messengers for intercellular communication. In this study, we investigated whether the PCAT surrounding coronary occlusive atherosclerotic lesions shows specific miRs expression patterns in patients with diabetes type 2 compared to non-diabetic patients. Methods We enrolled 43 patients (29 men, aged 63±12 years old) with 3-vessel coronary artery disease who underwent elective coronary bypass surgery with and without diabetes type 2. The PCAT samples were received from all participants. miR-133a, miR-21, miR-26b, miR-9 and miR-143 expression levels in PCAT cells were quantified by real-time reverse transcription polymerase chain reaction. Results Twenty-one patients with diabetic type 2 (14 men, 64±10 years old) and twenty=two non-diabetic patients (15 men, 62±15 years old) were included in the study. PCAT analysis showed a significant upregulation of miR-21 levels in diabetic compared to non-diabetic patients (181±76 versus 21±15, p=0.04). Diabetic patients also revealed a significant increase of miR-26b and miR-143 expression in PCAT samples compared to on-diabetics (33±22 versus 16±13, p=0.02, 93±42 versus 16±23, p=0.01). No significant differences between the two sites were observed in PCAT expression of miR-133a and miR-9 (73±12 versus 130±143, 56±44 versus 34±33, respectively, p =NS for both). Conclusions miRs expression in PCAT from diabetic patients with significant coronary disease show a distinct expression profile. Our study opens new perspectives in the pathophysiologic role of PCAT in atherosclerotic complications of diabetes and should be further investigated. FUNDunding Acknowledgement Type of funding sources: None.

2021 ◽  
Vol 93 (9) ◽  
pp. 1030-1036
Author(s):  
Olga A. Koshelskaya ◽  
Olga A. Kharitonova ◽  
Irina V. Kologrivova ◽  
Tatiana E. Suslova ◽  
Natalia Yu. Margolis ◽  
...  

Aim. To study interconnections between epicardial adipose tissue thickness (EATt), parameters of glucose metabolism/insulin, C-reactive protein (hsCRP), serum adipokines and severity of coronary artery disease (CAD) depending on the presence of diabetes mellitus type 2 (DM 2); to determine significant markers of CAD severity in patients with DM 2. Materials and methods. The study involved 106 patients with CAD (m/f 64/42, 60.96.8 years), including patients with DM 2 (group 1, n=35) and non-diabetic patients (group 2, n=71). Severity of CAD was evaluated according to angiography data with calculation of Gensini Score (GS). EATt was assessed via echocardiography. Serum levels of glucose/insulin metabolism parameters, lipid fractions, hsCRP and adipokines were evaluated. Clinical parameters, including GS, did not differ between groups. Results. EAT thickness median was elevated in gr.1 (5.1 mm vs. 4.4 mm in group 2), while adiponectin levels were decreased (6.55 g/ml vs. 7.71 g/ml). Linear regression of body mass index and resistin levels on EATt was revealed in gr.1; in gr.2 EATt linearly increased with waist circumference increment when EATt6 mm. Linear regression of EATt on GS was revealed in gr.1 when EATt8 mm, while linear regression in the whole GS range was obtained for HDL-C and hsCRP levels. Conclusion. Study results demonstrate differences in mechanisms of deposition and functioning of epicardial and abdominal adipose tissue depending on the presence or absence of diabetic status. Patients with DM2 are characterized by the excessive EAT deposition and decrease of serum adiponectin levels compared to non-diabetic patients in the equal conditions. Independent markers of CAD severity in DM 2 are decreased HDL-C and increased hsCRP levels, but not EATt.


VASA ◽  
2005 ◽  
Vol 34 (2) ◽  
pp. 113-117 ◽  
Author(s):  
Papanas ◽  
Symeonidis ◽  
Maltezos ◽  
Giannakis ◽  
Mavridis ◽  
...  

Background: The purpose of this study is to evaluate the severity of aortic arch calcification among type 2 diabetic patients in association with diabetes duration, diabetic complications, coronary artery disease and presence of cardiovascular risk factors. Patients and methods: This study included 207 type 2 diabetic patients (101 men) with a mean age of 61.5 ± 8.1 years and a mean diabetes duration of 13.9 ± 6.4 years. Aortic arch calcification was assessed by means of posteroanterior chest X-rays. Severity of calcification was graded as follows: grade 0 (no visible calcification), grade 1 (small spots of calcification or single thin calcification of the aortic knob), grade 2 (one or more areas of thick calcification), grade 3 (circular calcification of the aortic knob). Results: Severity of calcification was grade 0 in 84 patients (40.58%), grade 1 in 64 patients (30.92%), grade 2 in 43 patients (20.77%) and grade 3 in 16 patients (7.73%). In simple regression analysis severity of aortic arch calcification was associated with age (p = 0.032), duration of diabetes (p = 0.026), insulin dependence (p = 0.042) and presence of coronary artery disease (p = 0.039), hypertension (p = 0.019), dyslipidaemia (p = 0.029), retinopathy (p = 0.012) and microalbuminuria (p = 0.01). In multiple regression analysis severity of aortic arch calcification was associated with age (p = 0.04), duration of diabetes (p = 0.032) and presence of hypertension (p = 0.024), dyslipidaemia (p = 0.031) and coronary artery disease (p = 0.04), while the association with retinopathy, microalbuminuria and insulin dependence was no longer significant. Conclusions: Severity of aortic arch calcification is associated with age, diabetes duration, diabetic complications (retinopathy, microalbuminuria), coronary artery disease, insulin dependence, and presence of hypertension and dyslipidaemia.


Author(s):  
J. Zavar-Reza ◽  
H. Shahmoradi ◽  
A. Mohammadyari ◽  
M. Mohammadbeigi ◽  
R. Hosseini ◽  
...  

Diabetes ◽  
2020 ◽  
Vol 69 (Supplement 1) ◽  
pp. 1425-P
Author(s):  
ATSUHIKO KAWABE ◽  
YUKI NAKATANI ◽  
SHOYA ONO ◽  
YASUSHI MIYASHITA ◽  
MIHOKO MATSUMURA ◽  
...  

2015 ◽  
Vol 2015 ◽  
pp. 1-5 ◽  
Author(s):  
Ping Song ◽  
Jin Xu ◽  
Yongfeng Song ◽  
Shiliang Jiang ◽  
Haitao Yuan ◽  
...  

Aims. This study aimed to investigate whether the change of plasma myeloperoxidase (MPO) level would be associated with the incidence of coronary artery disease (CAD) among diabetic patients.Methods. 339 patients with type 2 diabetes mellitus (DM) underwent coronary angiography. Of them, 204 cases had CAD and were assigned to CAD group and 135 cases without CAD were assigned to non-CAD group.Results. Compared to non-CAD group, CAD group had higher level of plasma MPO (p<0.01). Multiple linear regression analysis showed that plasma MPO level was correlated with Gensini score. Multiple logistic analysis showed that the odds ratios for CAD across increasing tertiles of MPO level were 1.191 (0.971–1.547) and 1.488 (1.115–2.228) (p=0.048,p=0.009versus 1st tertile of MPO level, resp.) by adjusting for age, sex, and other conventional risk factors for CAD. The subjects were stratified into nine groups according to tertiles of MPO and HbA1c. The odds ratio for CAD was significantly higher in group with highest levels of MPO and HbA1c (OR = 4.08,p<0.01).Conclusion. Plasma MPO level was positively correlated with the degree of coronary artery stenosis in type 2 diabetic patients, and increasing blood glucose might amplify the association between MPO and CAD.


2020 ◽  
Author(s):  
Ayesh Khatoon ◽  
Shakti Kumar Yadav ◽  
Sompal Singh ◽  
Harsh Vardhan Singh ◽  
Namrata Sarin

Abstract Background: Platelet volume indices (PVI) such as mean platelet volume (MPV), platelet distribution width (PDW) and platelet large cell ratio (P-LCR), are the indicators of increased platelet activity which may play a role in development of vascular complications in diabetic patients. This study was performed to evaluate and compare the platelet volume indices such as MPV, PDW, P-LCR in patients of type 2 diabetes mellitus (DM) with and without manifested coronary artery disease in order to identify their usefulness in determining the risk for development of coronary complications.Methods: Analytical cross - sectional study included 150 patients of which 100 patients were diagnosed as type 2 DM and 50 apparently healthy controls. The study cases were divided into two groups based on presence or absence of coronary artery disease. Group A included 50 cases of type 2 DM without manifested coronary artery disease and group B included 50 cases of type 2 DM with manifested coronary artery disease. PVI was obtained using automated cell counter.Results: MPV, PDW, P-LCR were significantly higher in diabetics as compared to controls subjects (P < 0.001 for all). However, no statistically significant difference was found between diabetics with and without manifested coronary artery disease.Conclusions: The study showed higher PVI in diabetic subjects when compared to control subjects, but no difference between patients with and without manifested coronary artery disease suggesting that various other factors might be associated with the pathogenesis of CAD in patients of DM.


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