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Thrombospondin-1 Levels in Patients with Coronary Heart Disease

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World Journal of Cardiovascular Diseases 2021年第6期11卷 277-291页

作者： mohamed elnoamany Ashraf Dawood Nahed mohamed Momtaz Waleed Abdou Cardiology Department Faculty of Medicine Menoufia University Menoufia Egypt

Background: Thrombospondin-1 (TSP1) is associated with atherosclerosis in animals with diabetes mellitus (DM), but the precise role of TSP-1 in human atherosclerosis remains unknown. Objectives: To investigate serum thrombospondin1 level in patients with coronary artery disease with and without type 2 DM and its relationship to coronary artery scoring systems. Methods: The study comprised 180 patients recruited from those underwent coronary angiography for suspected coronary artery disease (CAD) was approved by Institutional Review Board and Institutional Ethical Committee for Human Research of menoufia university hospital. They were divided according to presence of CAD and type 2 DM into 4 groups: Group I (n = 44 patients): Non diabetic subjects without CAD, Group II (n = 40 patients): Diabetic patients without CAD, Group III (n = 49 patients): Non diabetic patients with CAD and Group IV (n = 47 patients): Diabetic patients with CAD. Serum level of TSP-1 was measured in all groups and coronary artery scoring analysis was done. Results: Serum TSP-1 levels were higher in patients with CAD and DM than in other groups (P 0.01) while the levels of serum TSP-1 in diabetic patients without CAD and non-diabetic patients with CAD didn’t show significant difference. Plasma TSP-1 levels were higher in patients with DM than those in patients without DM (582.95 ± 55.70 ng/mL vs. 516.91 ± 64.56 ng/ml, P

Paraoxonase 2 Gene (Cys<sup>311</sup>-Ser) Polymorphism and the Risk of Coronary Artery Disease

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World Journal of Cardiovascular Diseases 2014年第9期4卷 465-475页

作者： mohamed Fahmy elnoamany Ashraf Abdelraouf Dawood Rania mohamed Azmy Cardiology Menofia University Menufia Egypt Medical Biochemistry Menofia University Menufia Egypt

Background: Human paraoxonase-2(PON2) which is exclusively intracellular possesses unique properities that distinguish it from PON1 and PON3. Recently, it was demonstrated that PON2 protects against atherosclerosis by preventing LDL oxidation. Emerging evidences have proposed that genetic variations in the PON2 gene may be associated with coronary artery disease (CAD). Objectives: To investigate the relationship between a common PON2 gene (Cys311-Ser) polymorphism and the presence and extent of CAD. Methods: The study comprised 112 patients recruited from those undergoing coronary angiography for suspected CAD, who were divided according to the presence or absence of CAD into 2 groups Group I including 62 patients with CAD and Group II including 50 patients proved to have normal coronaries. All the subjects included in the study were genotyped for the (Cys311-Ser) polymorphism of PON2 gene using RCR-RFLP. Results: The frequency of Cys allele was significantly higher in group I compared to Group II (77.4% vs. 56% respectively, P < 0.01). Patients with vessel score 3 had significantly higher severity score and higher Cys allele frequency than patients with vessel score 2, the latter group had also significantly higher severity score and Cys allele frequency than patients with vessel score 1. In multivariate logistic regression analysis of different variables for prediction of CAD, age [OR 3.79, CI (1.33 - 12.7), P < 0.01], smoking [OR 0.71, CI (0.23 - 7.81), P 311 Cys allele [OR 5.67, CI (1.99 - 14.77), P < 0.001] were significantly independent predictors of CAD. Conclusion: Cys allele of PON2 311 gene polymorphism is an independent risk factor for CAD and it is associated not only with the presence of CAD but also with its extent and severity.

关键词： Paraoxonase 2 Coronary Artery Disease Polymorphism Atherosclerosis

Paraoxonase 1 gene (Gln<sup>192</sup>-Arg) polymorphism and the risk of coronary artery disease in type 2 diabetes mellitus

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World Journal of Cardiovascular Diseases 2012年第1期2卷 29-37页

作者： mohamed Fahmy elnoamany Ashraf Abdelraouf Dawood Rania mohamed Azmy Mostafa mohamed Elnajjar 不详

Background: Paraoxonase 1 (PON1) is reported to have an antioxidant and cardioprotective properties. Recently, an association of glutamine (Gln) or (type A)/arginine (Arg) or (type B) polymorphism at position 192 of PON1 gene has been suggested with coronary artery disease (CAD) among patients with diabetes mellitus (DM). However, conflicting results have also been reported. Objectives: To investigate the relationship between PON1 gene (Gln192-Arg) poly-morphism and the presence, extent and severity of CAD in type 2 DM. Methods: The study comprised 180 patients recruited from those undergoing coronary angiography for suspected CAD, who were divided according to the presence or absence of CAD and DM into 4 groups;Group I (n = 40 patients) nondiabetic subjects without CAD, Group II (n = 45 patients) diabetic patients without CAD, Group III (n = 47 patients) non diabetic patients with CAD and Group IV (n = 48 patients) diabetic patients with CAD. PON1 (Gln192-Arg) genotype was assessed using polymerase chain reaction (PCR) followed by AlwI digestion. Results: The frequency of Gln allele (Type A) was significantly higher in group I and group II compared to group III and group IV (62.5%, 60% vs 38.3%, 31.25% respectively, p 100 mg/dL [OR 4.31, CI (1.25 - 12.5), P < 0.001], high density lipoprotein (HDL) cholesterol <40 mg/dL [OR 5.11, CI (1.79 - 16.33), P < 0.001] and PON1 192 Arg allele [OR 4.62, CI (1.67 - 13.57), P < 0.001] were significantly independent predictors of CAD. Conclusion: Arg allele of PON1 192 gene polymorphism is an independent risk factor for CAD and it is associated not only with the presence of CAD but also with its extent and severity and its impact is clearly more pronounced in diabetic patients.

关键词： Paraoxonase 1 Coronary Artery Disease Diabetes Mellitus.

Diagnostic Accuracy of Strain Imaging of the Left Ventricle in Detection of Obstructive Coronary Artery Disease

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World Journal of Cardiovascular Diseases 2020年第8期10卷 572-586页

作者： mohamed Fahmy elnoamany Waleed Abdou Ibrahim Ahmed Mahmoud Hamza Menoufia University Menoufia Egypt Mahalla Cardiac Center Gharbia Egypt

Background: Speckle tracking echocardiography using average global strain and strain rate (SR) parameters for early detection of high risk patients with coronary artery disease (CAD) has gained a substantial clinical interest. Objective: Assessment of the diagnostic accuracy of strain imaging of the left ventricle in detection of obstructive coronary artery disease. Methods: One hundred patients were enrolled. They were divided into 3 groups: Group I (n = 40 patients) presented with ST segment elevation myocardial infarction (STEMI), Group II (n = 40 patients) presented with non-ST segment elevation myocardial infarction (NSTEMI) or unstable angina (UA) and Group III (n = 20 patients) with normal coronary angiography served as a control group. All patients were subjected to 2D speckle tracking echocardiography (2D STE) to assess LV longitudinal strain and strain rate (SR). Sensitivity, specificity and diagnostic accuracy of 2D STE in prediction of CAD and its severity using Gensini score were assessed. Results: The mean age for Group I, II and III was 52.20 ± 11.83, 51.97 ± 14.53 and 52.75 ± 10.75 respectively. LV average global systolic strain (AGS) was significantly lower in group I and II when compared to group III. AGS and average global systolic SR showed significa

关键词： Coronary Artery Disease Left Ventricle Strain Imaging

Diagnostic value of dobutamine stress Doppler tissue imaging in diabetic patients with suspected coronary artery disease

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World Journal of Cardiovascular Diseases 2011年第1期1卷 1-12页

作者： mohamed Fahmy elnoamany Hala Mahfouz Badran Tarek Salah Khalil Abdalla Mostafa Kamal Amany Ragab Serag Rehab Ebraheem Yaseen 不详

Background: Coronary artery disease (CAD) is often silent in diabetic patients, and it is typically in ad-vanced stages of development by the time it manifests. Various forms of stress testing have been investigated to detect obstructive CAD in diabetes mellitus. Ob-jectives: To assess the diagnostic value of dobutamine stress pulsed-wave Doppler tissue imaging (DTI) compared with standard wall motion analysis in de-tection of myocardial ischemia in diabetic patients with suspected CAD. Methods: The study comprised 46 diabetic patients with suspected CAD underwent dobutamine stress echocardiography (DSE) with DTI within 4 weeks before coronary angiography(CA). Dobutamine infusion started at 5 μ/kg/min and in-creased up to 40 μ/kg/min with additional atropine during submaximal heart rate responses. In addition to wall-motion score index (WMSI) analysis, pulsed- wave DTI examination of basal and mid segments of posteroseptal, lateral, anterior, inferior and antero- septal walls was performed. Myocardial velocities were measured at rest in the apical 4, 3 and 2-cham- ber views. The measurements were repeated at low dose (10 - 15 μ/kg/min) and at peak stress (40 μ/kg/min). DTI measurements included peak systolic velocity (S), peak early diastolic velocity (E) and peak late diastolic velocity (A) and the results were com-pared to WMSI analysis. Patients were classified into two groups according to CA results;group (I) di-abetics with positive CA (n = 27) and group (II) di-abetics with negative CA (n = 19). Results: There was no significant difference between the two groups in duration of diabetes, global WMSI at rest or the ? changes (stress-rest/rest) of WMSI (P > 0.05). Global S and global E were significantly lower in group I compared to group II at peak stress (11.3 ± 3.7 cm/sec vs. 14.5 ± 2.2 cm/sec, p < 0.01) and (11.3 ± 1.6 cm/sec vs. 13.1 ± 2.1 cm/sec, p < 0.01) respectively. The cutoff points for global S and global E to detect obstructive CAD in diabetics were

关键词： Doppler Tissue Imaging Dobutamine Stress Diabetes Mellitus