Coronary Artery Disease In Diabetic Patients Research Articles

Triglyceride glucose index–body mass index as a predictor of coronary artery disease severity in patients with H-type hypertension across different glucose metabolic states

BackgroundThe triglyceride glucose-body mass index (TyG-BMI) is considered to be a reliable surrogate marker of insulin resistance (IR). However, limited evidence exists regarding its association with the severity of coronary artery disease (CAD), particularly in hypertensive patients with different glucose metabolic states, including those with H-type hypertension. This study aimed to investigate the relationship between TyG-BMI and CAD severity across different glucose metabolism conditions.MethodsThis retrospective cohort study included 1537 hypertensive patients who underwent coronary angiography. The TyG-BMI was categorized into tertiles and analyzed using logistic regression models and restricted cubic spline (RCS) models to assess its association with multi-vessel CAD. Receiver operating characteristic (ROC) curves were used to evaluate the predictive value of TyG-BMI in detecting the severity of CAD in different glucose metabolism states, including normal glucose regulation (NGR), pre-diabetes mellitus (Pre-DM), and diabetes mellitus (DM). The above method has also been applied to populations of H-type hypertension patients.ResultsThe TyG-BMI was significantly associated with the severity of multi-vessel CAD in hypertensive patients (Odds ratio [OR] 1.043, 95% CI 1.032–1.053). In the diabetic subgroup, after adjusting for risk factors, the risk of multi-vessel CAD in the T3 groups was 3.836-fold (95% CI 1.763–8.347; P = 0.001) higher than in the T1 group, with a non-linear dose–response relationship (P for non-linearity = 0.017). In H-type hypertension patients, the TyG-BMI was also significantly correlated with multi-vessel CAD (OR 5.248, 95% CI 1.821–15.126, P = 0.002) in the DM group. The ROC analysis revealed that TyG-BMI had the highest predictive value for multi-vessel CAD in diabetic patients, with an AUC of 0.720 (95% CI 0.661–0.780, P < 0.001).ConclusionsThe TyG-BMI serves as a robust predictor of CAD severity in hypertensive patients, particularly those with diabetes and H-type hypertension. And the non-linear dose–response relationship between TyG-BMI and multi-vessel CAD in diabetic patients underscores its potential clinical utility. This index could serve as a valuable tool for the early identification of individuals at high risk.

Carotid Atherosclerosis in Diabetic Patients and Associated Risk Factors

Objective: To determine the frequency of carotid atherosclerosis in diabetic patients and find out its association with various risk factors. Study Design: Cross-sectional analytical study. Place and Duration of Study: Department of Medicine, Combined Military Hospital, Nowshera Pakistan, from May to Jul 2022. Methodology: Patients, from both genders, were included in this study. Demographic information was obtained from all patients. Patients fulfilling the inclusion and exclusion criteria underwent carotid Doppler ultrasound after giving informed consent. High-resolution 7.5 MHz probe B mode ultrasonography and atherosclerosis was classified on the basis of grey-scale imaging. Results: A total of 100 patients were included in the study, out of which 74 were males and 26 were females. Among diabetics, 54% occurrence of atherosclerosis was seen, with a major share of 24% involvement of the left carotid artery, followed by 18% bilaterally, and 12% right carotid artery involvement. Carotid intimal media thickness increased with advancing age, with variable severity of mild in 32%, moderate in 14%, and severe stenosis in 3% of positive cases. Conclusion: There was a high association of carotid atherosclerosis with diabetes mellitus, having significant association with older age, hypertension, hyperlipidemia, and smoking.

Siglec-5 as a novel receptor mediates endothelial cells oxLDL transcytosis to promote atherosclerosis

BackgroundExcessive subendothelial retention of oxidized low-density lipoprotein (oxLDL) and subsequent oxLDL engulfment by macrophages leads to the formation of foam cells and the development of atherosclerosis. Our previous study showed that the plasma level of sialic acid-binding immunoglobulin-like lectin 5 (Siglec-5) was a novel biomarker for the prognosis of atherosclerosis in diabetic patients. However, the role and underlying mechanisms of Siglec-5 in atherosclerosis have not been elucidated. MethodsThe interaction between oxLDL and Siglec-5 was detected by fluorescence colocalization and coimmunoprecipitation. The effect of oxLDL on Siglec-5 expression was detected in endothelial cells and macrophages, and the effect of Siglec-5 on oxLDL transcytosis and uptake was investigated. Siglec-5 was overexpressed in mice using recombinant adeno-associated virus vector serotype 9 (rAAV9-Siglec-5) to evaluate the effect of Siglec-5 on oxLDL uptake and atherogenesis in vivo. In addition, the effects of Siglec-5 antibodies and soluble Siglec-5 proteins on oxLDL transcytosis and uptake and their role in atherogenesis were investigated in vivo and in vitro. ResultsWe found that oxLDL interacted with Siglec-5 and that oxLDL stimulated the expression of Siglec-5. Siglec-5 promotes the transcytosis and uptake of oxLDL, while both anti-Siglec-5 antibodies and soluble Siglec-5 protein attenuated oxLDL transcytosis and uptake. Interestingly, overexpression of Siglec-5 by recombinant adeno-associated viral vector serotype 9 (rAAV9-Siglec-5) promoted the retention of oxLDL in the aorta of C57BL/6 mice. Moreover, overexpression of Siglec-5 significantly accelerated the formation of atherosclerotic lesions in Apoe−/− mice. Moreover, both anti-Siglec-5 antibodies and soluble Siglec-5 protein significantly alleviated the retention of oxLDL in the aorta of rAAV9-Siglec-5-transfected C57BL/6 mice and the formation of atherosclerotic plaques in rAAV9-Siglec-5-transfected Apoe−/− mice. ConclusionOur results suggested that Siglec-5 was a novel receptor that mediated oxLDL transcytosis and promoted the formation of foam cells. Interventions that inhibit the interaction between oxLDL and Siglec-5, including anti-Siglec-5 antibody or soluble Siglec-5 protein treatment, may provide novel therapeutic strategies in treating atherosclerosis.

Role of lymphocyte-to-monocyte ratio as a predictive marker for diabetic coronary artery disease: A cross-sectional study.

The lymphocyte to monocyte ratio (LMR) is considered a marker of systemic inflammation in cardiovascular disease and acts as predictor of mortality in coronary artery disease. To investigate the predictive role of LMR in diabetic coronary artery disease patients. This cross-sectional study was conducted at tertiary care super-specialty hospital at New Delhi, India. A total of 200 angiography-proven coronary artery disease (CAD) patients were enrolled and grouped into two categories: Group I [CAD patients with type 2 diabetes mellitus (T2DM) and glycated hemoglobin (HbA1c) levels ≥ 6.5%], and Group II (CAD patients without T2DM and HbA1c levels < 6.5%). Serum lipoproteins, HbA1c, and complete blood count of enrolled patients were analyzed using fully automatic analyzers. The logistic regression analysis showed an odds ratio of 1.48 (95%CI: 1.28-1.72, P < 0.05) for diabetic coronary artery disease patients (Group I) in unadjusted model. After adjusting for age, gender, diet, smoking, and hypertension history, the odds ratio increased to 1.49 (95%CI: 1.29-1.74, P < 0.01) in close association with LMR. Further adjustment for high cholesterol and triglycerides yielded the same odds ratio of 1.49 (95%CI: 1.27-1.75, P < 0.01). Receiver operating characteristic curve analysis revealed 74% sensitivity, 64% specificity, and 0.74 area under the curve (95%CI: 0.67-0.80, P < 0.001), suggesting moderate predictive accuracy for diabetic CAD patients. LMR showed positive association with diabetic coronary artery disease, with moderate predictive accuracy. These findings have implications for improving CAD management in diabetics, necessitating further research and targeted interventions.

Coronary Artery Disease among Type-II Diabetic Patient in Bangladesh

This study aimed to evaluate the relationship between microalbuminuria and the angiographic severity of CAD patients with type 2 diabetes by SYNTAX I, SYNTAX II, and Gensini scores. Diabetes mellitus is one of the strongest risk factors for coronary artery disease, so it is imperative to identify CAD in diabetic patients as soon as feasible. In this study, 82 patients with type II diabetes who had a suspected case of coronary artery disease (CAD) had elective coronary angiography. The urine albumin-creatinine ratio (UACR) was measured for each patient, and the severity of each patient's CAD was assessed using the Gensini, SYNTAX, and SYNTAX II scores. In the studied population, there were 26 (31.7%) females and 56 (68.3%) males. On average, they were 56.29 + 9.18 years old. Patients were categorized into two groups based on their UACR level: group 1 consisted of 41 patients whose UACR was less than 30 mg/g, and group 2 consisted of 41 patients whose UACR was greater than or equal to 30 mg/g. The study found that patients in group 2 had significantly higher SYNTAX scores (P=0.001) and significantly higher Gensini scores (P=0.001) than patients in group 1. Age and the length of UACR and DM showed a positive correlation (p=0.003), as did hypertension (HTN) and the length of UACR and DM (p=0.049). Microalbuminuria can be used to predict the severity and presence of CAD in type II diabetes. Keywords: Gensini score, SYNTAX score, microalbuminuria, diabetes, and coronary artery disease.

Does Irisin Have an Effect on the Development of Type 2 Diabetes Mellitus and the Development of Atherosclerosis in Diabetic Patients?

Does Irisin Have an Effect on the Development of Type 2 Diabetes Mellitus and the Development of Atherosclerosis in Diabetic Patients?

Novel Cytokines Contribution to Atherosclerosis in Diabetic Patients

Novel Cytokines Contribution to Atherosclerosis in Diabetic Patients

Linking Diabetic Retinopathy Severity to Coronary Artery Disease Risk Factors in Type 2 Diabetic Patients.

Diabetes mellitus (DM) is a common metabolic disorder characterized by hyperglycemia, leading to chronic complications, notably cardiovascular diseases such as coronary artery disease (CAD). Diabetic retinopathy (DR), a leading cause of blindness, may serve as a non-invasive marker for CAD. This study investigates the correlation between DR and CAD to explore its diagnostic potential in diabetic populations. A cross-sectional study was conducted over one year in a general hospital, involving 100 type 2 DM patients with retinopathy. DR was classified as mild non-proliferative diabetic retinopathy (NPDR), moderate NPDR, severe NPDR, or proliferative retinopathy, based on fundus examinations. Data on age, duration of diabetes, cholesterol levels, glycated hemoglobin (HbA1C), and ECG (electrocardiography) findings were collected. Statistical analysis included frequency analysis, chi-square tests for association between categorical variables, and significance testing with p-values. Data were analyzed using IBM SPSS Statistics for Windows, Version 20.0 (Released 2011; IBM Corp., Armonk, New York, United States). Descriptive statistics were characterized by categorical and continuous variables. The chi-square test determined associations between qualitative variables, with significance set at p<0.05. The mean age of patients was 57.13 ± 8.51 years. Age and duration of diabetes were significant predictors of retinopathy severity (p<0.001). Proliferative retinopathy was found exclusively in patients over 70 years. Lower cholesterol levels (<200 mg/dL) were significantly associated with less severe retinopathy (p=0.033), whereas higher cholesterol levels (>200 mg/dL) did not show a statistically significant association with retinopathy severity (p=0.772). Patients with HbA1C levels between 6.5% and 8.5% predominantly had milder forms of retinopathy, as indicated by the significant p-value (<0.001). In contrast, patients with HbA1C levels above 8.5% are more likely to have severe NPDR or proliferative diabetic retinopathy (PDR), but this association was not statistically significant (p=0.582). ECG abnormalities increased with retinopathy severity (p=0.002). Hypertension was significantly linked to cardiac changes in retinopathy patients (p<0.001), while smoking and family history of CAD were not significant factors.This study's cross-sectional design limits causality inference. The single-center sample of 100 patients may not be broadly generalizable. Reliance on self-reported data introduces potential recall bias, and confounding factors such as diet, physical activity, and additional comorbidities were not accounted for. The lack of a control group further limits comparative analysis. Future longitudinal studies with larger, diverse samples are needed. Retinopathy in DM patients is significantly associated with cardiac changes and other risk factors such as hypertension, dyslipidemia, and poor glycemic control. Aggressive management of these factors is essential. Retinopathy can serve as a predictor of CAD in diabetic patients.

Determination of Correlation between Diabetes Duration and Coronary Artery Disease Severity in Patients Undergoing Coronary Angiography

Background. Coronary artery disease (CAD) is caused by atherosclerotic process in coronary arteries. Due to extraordinary risk for atherosclerosis in diabetic patients, it is also counted as a vascular disease. Diabetes mellitus (DM) is a direct major associated risk factor in the development of cardiovascular disease with some studies from high income countries reporting correlation between duration of DM and severity of CAD. However, data from Pakistan is scarce. The aim. To determine the correlation between duration of DM and severity of CAD in patients undergoing coronary angiography at the tertiary care cardiac center. Materials and methods. This cross-sectional study was conducted in the Department of Cardiology, Civil Hospital Karachi, among 160 patients who were scheduled for coronary angiography with comorbid DM. Correlation between duration of DM and severity of CAD (as assessed by the modified Gensini score) was statistically measured and reported employing Pearson’s correlation coefficient (r). Results. Significant correlation between DM duration and total Gensini score was shown with r = 0.759 and p = 0.000001. With the increase in the duration of DM, the severity of CAD also increased. Conclusion. DM duration is positively associated with the modified Gensini score and the significant determinants of CAD severity tend to be relevant.

The relationship between the systemic immune inflammatory index and computerized tomography guided coronary lesion severity in diabetic patients.

The incidence of cardiovascular events is high in diabetic patients. In diabetic patients, the levels of inflammatory parameters in the circulation are increased, which is associated with poor outcome. In this study, we investigated the relationship between the systemic immune inflammatory index (SII), which is a sensitive indicator of the inflammatory response, and the severity of coronary atherosclerosis in diabetic patients. Diabetic patients who underwent coronary computed tomography for chest pain were included in the study. The patients were divided into two groups according to their median systemic immune inflammatory index values, and the predictors of SII elevation were investigated. A total 210 patients were included in the study. The mean age of the patients was 52.6 ± 9.3 and 44.3% were male. In univariate analysis, HDL, triglyceride, lesion severity, and CAR were associated with high SII. In the regression analysis, lesion severity and lower HDL levels were determined as predictor of high SII. Inflammation plays an important role in the development of coronary atherosclerosis. Diabetic patients with elevated SII levels may require further investigation for significant atherosclerosis.

Correlation between carotid intima media thickness and TSH in diabetic patients - an analytical cross-sectional study in a tertiary-care hospital

Background: Atherosclerotic cardiovascular disease is one of the major complications in diabetic patients leading to illness and death. Carotid Intima media thickness (CIMT), being simple and non-invasive, is widely used as an indicator of atherosclerosis to identify early atherosclerotic changes. Insulin sensitivity, development of chronic complications in diabetes, as well as alteration in glucose metabolism could be attributed to abnormal thyroid function, and likewise, diabetes itself can alter thyroid function by impairing peripheral conversion of thyroxine and altering thyroid stimulating hormone (TSH) level. This study was conducted to find the correlation between CIMT and TSH in diabetic patients. Methods: In this hospital-based analytical cross-sectional study we enrolled 29 patients with type 2 Diabetes Mellitus. TSH and CIMT were measured. To find the correlation between TSH and CIMT, Pearson correlation analysis was used. Results: Of the 29 patients 34.5% were female and 65.5% were male. A statistically significant correlation was found between HbA1C, FBS with CIMT (p &lt; 0.001); however, whether TSH was an independent factor causing early atherosclerosis in diabetic patients measured using CIMT could not be established. We found a negative correlation between CIMT and TSH Pearson correlation r – 0.213 with a p-value 0.267. Conclusion: Diabetes was associated with early atherosclerotic changes measured using CIMT, and hence, it can be used as a marker for screening early atherosclerosis in diabetic patients. Since no association was found between CIMT and TSH in our study, the role of TSH in predicting atherosclerosis in diabetic patients could not be established. Studies with larger sample size need to be conducted to establish the relationship.

DRUG-ELUTING STENTS OUTCOMES IN DIABETICS WITH CORONARY ARTERY DISEASE AND PULMONARY IMPLICATIONS

The study aims to investigate the outcomes of drug-eluting stents (DES) in patients with diabetes mellitus and coronary artery disease (CAD) while considering implications for pulmonary and cardiac health. A prospective observational study design was employed. A cohort of 54 patients who underwent percutaneous coronary intervention (PCI) with DES implantation was included. Primary outcome measures included stent patency rates, restenosis rates, major adverse cardiovascular events (MACE), and pulmonary function tests. Subgroup analyses were conducted based on age and gender. The study unveiled a 91.5% stent patency rate at six months and a 12.3% restenosis rate. Furthermore, the cumulative MACE incidence at one year was 18.5%. Subgroup analysis identified gender-based differences in restenosis rates and a slightly elevated MACE incidence among patients with longer diabetes duration. Importantly, pulmonary function tests, encompassing spirometer and lung volume assessments, demonstrated no significant pulmonary impairment following DES implantation. These assessments indicated only a marginal 1.2% reduction in FEV1, while TLC remained statistically unchanged, reassuring that DES utilization does not adversely impact pulmonary health. This study contributes to the growing body of evidence supporting the use of DES as a viable intervention in managing CAD in diabetic patients with potential implications for both cardiac and pulmonary health. The outcomes highlight DES's potential to enhance long-term cardiovascular effects in this high-risk population.

Abstract 11582: The Fingertip Artery is Better Than the Brachial Artery in Evaluating Vascular Endothelial Function for Coronary Artery Disease in Diabetic Patients

Introduction: Several studies demonstrated that endothelial function is impaired in diabetic patients, but no study evaluated vascular parameters in diabetic patients trough a combined analysis of macro and micro-endothelial function. In addition, the difference in vascular parameters between diabetes patients with coronary artery disease (CAD) and without CAD remains unknown. We assessed whether CAD is related to macro or micro vascular endothelial function in diabetic patients. Hypothesis: We measured vascular function in 219 diabetic patients (age 68±10 years), including 147 patients with CAD (CAD group) and 72 patients without CAD (control group). Flow mediated vasodilatation (FMD)indicating macro-endothelial function in the brachial artery was measured by ultrasound using a semi-automatic device: UNEXEF18G (UNEX Co. Nagoya, Japan). Reactive hyperemia index (RHI) indicating micro-endothelial function in the fingertip artery was measured by peripheral arterial tonometry (EndoPAT 2000). Vascular function tests were measured on the same day. Results: RHI was significantly impaired in CAD group (RHI: 2.0±0.7 vs.1.7±0.5 P=0.012), however FMD had no deference in the two groups. Logistic regression analysis revealed that RHI (odds ratio: 0.44, 95% confidence interval: 0.21-0.94) was an independent predictor for CAD in diabetic patients. Conclusions: RHI, an acknowledged marker of micro-endothelial function was a more sensitive method than FMD in evaluating the risk assessment of CAD in diabetic patients. more peripheral vascular endothelial function was associated with CAD in diabetic patients.

Intermediate Monocytes and Circulating Endothelial Cells: Interplay with Severity of Atherosclerosis in Patients with Coronary Artery Disease and Type 2 Diabetes Mellitus.

The aim was to investigate the association of monocyte heterogeneity and presence of circulating endothelial cells with the severity of coronary atherosclerosis in patients with coronary artery disease (CAD) and type 2 diabetes mellitus (T2DM). We recruited 62 patients with CAD, including 22 patients with DM2. The severity of atherosclerosis was evaluated using Gensini Score. Numbers of classical (CD14++CD16-), intermediate (CD14++CD16+), and non-classical (CD14+CD16++) monocyte subsets; circulating endothelial progenitor cells; and the presence of circulating endothelial cells were evaluated. Counts and frequencies of intermediate monocytes, but not glycaemia parameters, were associated with the severity of atherosclerosis in diabetic CAD patients (rs = 0.689; p = 0.001 and rs = 0.632; p = 0.002, respectively). Frequency of Tie2+ cells was lower in classical than in non-classical monocytes in CAD patients (p = 0.007), while in patients with association of CAD and T2DM, differences between Tie2+ monocytes subsets disappeared (p = 0.080). Circulating endothelial cells were determined in 100% of CAD+T2DM patients, and counts of CD14++CD16+ monocytes and concentration of TGF-β predicted the presence of circulating endothelial cells (sensitivity 92.3%; specificity 90.9%; AUC = 0.930). Thus, intermediate monocytes represent one of the key determinants of the appearance of circulating endothelial cells in all the patients with CAD, but are associated with the severity of atherosclerosis only in patients with association of CAD and T2DM.

Ankle-brachial Index as Predictor of Coronary Artery Disease in Diabetic Patients

Introduction: In India, the incidence of coronary artery disease (CAD) has doubled, and the association between diabetes mellitus, peripheral arterial disease, and CAD remains unclear. This study aimed to explore the relationship between ankle-brachial index (ABI) and CAD in diabetic patients, using the ABI as a diagnostic tool for peripheral arterial disease. Materials and Methods: A cross-sectional study at a tertiary care center analyzed 100 diabetes cases for CAD using angina history, past treatment, electrocardiography, and two-dimensional echocardiography. Blood pressure was measured in all limbs, and ABI was calculated by dividing ankle pressure by brachial pressure, selecting the lower ratio. Results: Out of 100 patients, 28 had ABI &lt;0.9 and 72 had ABI ≥0.9. The majority of both groups were male. The highest percentage in both groups was aged 51–60. The ABI +VE group had higher proportions of hypertension, smokers, and dyslipidemia. The majority in the ABI −VE group were nonsmokers and without dyslipidemia. Both groups had a majority with body mass index ≥25 kg/m2. Mean diabetes duration was higher in the ABI +VE group, while mean glycated hemoglobin levels were higher in the ABI −VE group. Conclusion: In our study, the prevalence of ABI +VE patients was 28% and prevalence of CAD in this group was 42.85%, which is statistically significant. Hypertension, smoking, dyslipidemia, diabetes duration, and glycemic control were significantly associated with low ABI index (ABI &lt;0.9).

Multivessel Coronary Artery Disease Complicated by Diabetes Mellitus Has a Relatively Small Effect on Endothelial and Lipoprotein Lipases Expression in the Human Atrial Myocardium and Coronary Perivascular Adipose Tissue.

Endothelial (EL) and lipoprotein (LPL) lipases are enzymes involved in lipoproteins metabolism and formation of atherosclerosis, a pathological feature of coronary artery disease (CAD). This paper examines the role of the lipases in the right atrial appendage (RAA) and coronary perivascular adipose tissue (PVAT) of patients with CAD alone or with accompanying diabetes. Additionally, correlation analysis for plasma concentration of the lipases, apolipoproteins (ApoA-ApoJ) and blood lipids (Chol, HDL-C, LDL-C, TAG) was performed. We observed that CAD had little effect on the lipases gene/protein levels in the RAA, while their transcript content was elevated in the PVAT of diabetic CAD patients. Interestingly, the RAA was characterized by higher expression of EL/LPL (EL: +1-fold for mRNA, +5-fold for protein; LPL: +2.8-fold for mRNA, +12-fold for protein) compared to PVAT. Furthermore, ApoA1 plasma concentration was decreased, whereas ApoC1 and ApoH were increased in the patients with CAD and/or diabetes. The concentrations of ApoC3 and ApoD were strongly positively correlated with TAG content in the blood, and the same was true for ApoB with respect to LDL-C and total cholesterol. Although plasma concentrations of EL/LPL were elevated in the patients with diabetes, CAD alone had little effect on blood, myocardial and perivascular fat expression of the lipases.

Protective effects of paraoxonase-1, vitamin E and selenium, and oxidative stress index on the susceptibility of low density lipoprotein to oxidation in diabetic patients with/without coronary artery disease

BackgroundThe oxidative modification of low density lipoprotein (LDL) is closely associated with an increased risk for coronary artery disease (CAD) in diabetic patients. The purpose of this study is to investigate the relation between serum vitamin E and selenium, paraoxonase-1 (PON1) activity, total antioxidant capacity (TAC), total oxidant status (TOS), malondialdehyde (MDA), and oxidative stress index (OSI) values with the susceptibility of LDL to oxidative modification and the possibility of CAD in diabetic patients.MethodThis study was designed as a case control survey of 82 diabetes patients divided into two groups including T2DM alone (as group I) and both T2DM and CAD (as group II). Fasting blood samples were taken to the assay of fasting blood glucose (FBG), HbA1c, total cholesterol (TC), TAC, TOS, MDA, OSI, vitamin E, selenium, oxidized low density lipoprotein (Ox-LDL), and activity of PON1.ResultsOx-LDL, MDA, TOS, and OSI values in groups II were significantly higher compared with group I (all with P value = 0.000). TAC, vitamin E, selenium, and PON1 activity values were significantly lower in group II compared with groups I (P value = 0.000; P value = 0.000; P value = 0.007; P value = 0.003, respectively). There were significant relationships between the amounts of TAC, TOS, OSI, and vitamin E with the amounts of PON1 activity and Ox-LDL (p < 0.05). But Ox-LDL and PON1 activity correlated weakly with together (p = 0.094).ConclusionResults of this study support the belief that oxidative stress might be an important etiologic factor which makes some diabetics more susceptible to CAD. Increased oxidative stress may be a potential therapeutic target in the prevention and management of CAD in diabetic patients.

Increased selenium and decreased iron levels in relation to risk of coronary artery disease in patients with diabetes.

Observational studies have reported inconsistent associations between micronutrient levels and the risk of coronary artery disease (CAD) in diabetic patients. We aim to explore the causal association between genetically predicted concentrations of micronutrients (phosphorus, magnesium, selenium, iron, zinc, and copper) and CAD in patients with diabetes. Single nucleotide polymorphisms (SNPs) connected to serum micronutrient levels were extracted from the corresponding published genome-wide association studies (GWASs). Summary-level statistics for CAD in diabetic patients were obtained from a GWAS of 15,666 patients with diabetes. The primary analysis was carried out with the inverse variance weighted approach, and sensitivity analyses using other statistical methods were further employed to assess the robustness of the results. Genetically predicted selenium level was causally associated with a higher risk of CAD in diabetic patients (odds ratio [OR]: 1.25; 95% confidence interval [CI]: 1.10-1.42; p = 5.01 × 10-4). While, genetically predicted iron concentrations in patients with diabetes were inversely associated with the risk of CAD (OR: 0.82; 95% CI: 0.75-0.90; p = 2.16 × 10-5). The association pattern kept robust in most sensitivity analyses. Nominally significant associations were observed for magnesium and copper with the risk of CAD in patients with diabetes. No consistent evidence was found for the causal associations between phosphorus and zinc levels, and the risk of CAD in patients with diabetes. We provide consistent evidence for the causal effect of increased selenium and decreased iron levels on CAD in patients with diabetes, highlighting the necessity of micronutrient monitoring and application in these patients.

A study of the relationship between brachial artery vasodilation and platelet/lymphocyte ratio in diabetic patients with coronary atherosclerosis.

To investigate the correlation between brachial artery flow-mediated endothelium-dependent dilation (FMD) and platelet-lymphocyte ratio (PLR) in peripheral blood and coronary atherosclerosis in diabetic patients. Seventy-five diabetic patients aged 62 ± 9 years, 68% male and 32% female, who underwent brachial artery endothelial function test and coronary CT scan were collected. Coronary artery calcification (CAC) was observed to assess the presence of coronary atherosclerosis, and high-resolution extravascular ultrasound was used to detect FMD. Platelet count and lymphocyte count were recorded by routine blood tests, and PLR was calculated for each study subject. Statistical methods were used to verify the association of FMD and PLR with CAC assessed by CT, respectively. Patients with coronary atherosclerosis had decreased FMD and increased PLR compared with patients with normal coronary arteries. Univariate logistic regression analysis showed that CAC score was significantly associated with both FMD (odds ratio: 0.167; 95% confidence interval: 0.049-0.565; p = 0.002) and PLR (odds ratio: 0.127; 95% confidence interval: 0.033-0.484; p = 0.001) at FMD < 5.1% or PLR > 130. The area under the ROC curve of FMD and PLR alone was 0.760 and 0.763, respectively. In addition, combined diagnosis of FMD and PLR showed the highest area under the ROC curve (0.830). FMD combined with PLR is expected to be a precise diagnostic modality for coronary artery calcification in diabetic patients.

Vascular cell adhesion molecule‑1 levels in patients with coronary artery disease with type 2 diabetes mellitus

Chronic systemic inflammation is a key component of the pathogenesis of both type 2 diabetes mellitus (T2DM) and coronary artery disease (CAD). Soluble vascular cell adhesion molecule‑1 (sVCAM‑1) is considered as the indicator of vascular inflammation and endothelial activation. The aim of our study was to investigate sVCAM‑1 levels in patients with CAD with T2DM and to determine their dependence on a previous history of myocardial infarction (MI). The study included 52 patients with stable CAD with T2DM, 20 CAD patients without diabetes and 14 control group persons. sVCAM-1 levels were measured in serum by the enzyme-linked immunosorbent assay. sVCAM‑1 levels in patients with CAD with T2DM and patients with CAD without diabetes were higher than in the control group (p&lt;0,001 and p&lt;0,001, respectively). The difference in sVCAM‑1 levels between CAD patients with T2DM and without diabetes was not significant (p=0,355). There were no significant correlations of sVCAM‑1 levels with glucometabolic indices in any group. Only in patients with CAD with T2DM sVCAM‑1 level negatively correlated with high-density lipoprotein cholesterol. CAD patients with and without T2DM with a history of myocardial infarction (MI) had higher sVCAM‑1 levels than patients without previous MI (p=0,038, р=0,043, respectively). Only in diabetic CAD patients sVCAM‑1 levels were increased in those without a history of MI (р=0,036, in comparison with the controls). There were no correlations between sVCAM‑1 levels and left ventricular remodeling indices in patients either with or without MI. Conclusions. In patients with CAD with T2DM and patients with CAD without T2DM, sVCAM‑1 levels increased in comparison with the controls. However, in patients without diabetes sVCAM‑1 level was increased only in those with previous MI. In patients with T2DM, sVCAM‑1 level increased in the absence of previous MI and there was the further significant increase of its level in postinfarction cardiosclerosis.