Association of CDKN2B-AS1 Polymorphisms with Premature Triple-vessel Coronary Disease and Their Sex Specificity in the Chinese Population

Objective The aim of this study is to establish whether cyclin-dependent kinase inhibitor 2B antisense RNA 1(CDKN2 B-AS1) gene polymorphisms are associated with premature triple-vessel disease(PTVD). Methods Nine single-nucleotide polymorphisms(rs1063192, rs10757274, rs1333042, rs1333049, rs2285327, rs3217986, rs3217992, rs4977574, and rs9632884) were genotyped in 884 PTVD patients and 907 control subjects(males ≤ 50 years old and females ≤ 60 years old) using the improved multiplex ligase detection reaction method. Results The allele frequencies of rs10757274 G, rs1333049 C, rs4977574 G(all P < 0.001), and rs3217986 G(P = 0.040) were significantly higher in the PTVD group than in the control group, but those of rs1063192 A, rs1333042 G, and rs9632884 C(all P < 0.001) were significantly lower in the former than in the latter. Logistic regression analysis revealed that homozygote AA of rs1333042 is associated with decreased risk for PTVD(OR = 0.42, 95% CI: 0.22-0.82, P = 0.011). In addition, the allele frequencies observed differed between genders. The G allele of rs3217986 was associated with increased risk for PTVD in male patients only(OR = 2.94, 95% CI: 1.27-6.80, P = 0.012) in the dominant model, and no positively mutated allele was found in female patients. Conclusion Polymorphisms of the CDKN2 B-AS1 gene are associated with the incidence of PTVD in the Chinese population. Furthermore, the frequencies of mutated alleles differed between genders.

A comparative study of the grafts patency rate between the minimally invasive direct and the standard off-pump coronary artery bypass grafting in triple-vessel disease

Objective This study aims to compare the grafts patency rate in triple-vessel disease between minimally invasive direct and the standard off-pump coronary artery bypass grafting.Methods Fifty patients who were hospitalized in Beijing ChaoYang Hospital during August 2013 to May 2015 were analyzed.MIDOPCABG group(n=25)underwent minimally invasive direct offpump coronary artery bypass grafting,and OPCABG group(n=25)underwent standard off-pump coronary artery bypass grafting group.

Clinical Outcomes in Patients Undergoing Triple-Vessel Angioplasty for Symptomatic Coronary Artery Disease

Current treatment strategies for multi-vessel coronary artery disease include either coronary artery bypass surgery or percutaneous coronary intervention with stenting. The present study evaluates the morbidity and mortality among coronary artery disease patients undergoing triple-vessel angioplasty. This prospective record based descriptive study was carried out in Medical College, Pariyaram, Kannur, Kerala;a tertiary care cardiac centre in South India. Fifty consecutive patients who underwent angioplasty of one or more lesions in each of the three major coronary arteries from May 2010 to July 2012 were included in the study. The study describes the clinical profile of the patients and a moderate term clinical follow-up to reassess the symptoms, functional status and left ventricular function by history, electrocardiogram, echocardiogram, and treadmill test. Mortality and morbidity were considered as end-points of the study. Event-free survival rate was 94% at a mean follow-up of 20 months. Overall 98% continued success was obtained with triple-vessel angioplasty. Triple-vessel angioplasty is a safe and effective therapy as an alternative to surgical revascularization in selected patients with triple-vessel coronary artery disease.

Comparison of Long-term Outcomes in Patients with Premature Triple-vessel Coronary Disease Undergoing Three Different Treatment Strategies： A Prospective Cohort Study

Background： Patients with premature triple-vessel disease （PTVD） have a higher risk of recurrent coronary events and repeat revascularization： however, the long-term outcome of coronary artery bypass grafting （CABG）, percutaneous coronary intervention （PCI）, and medical therapy （MT） alone for PTVD patients is controversial. The aim of this study is to evaluate the long-term outcome of PTVD patients among these three treatment strategies, to find out the most appropriate treatment methods lbr these patients. Methods： One thousand seven hundred and ninety-two patients with PTVD （age： men 〈50 years and women _〈60 years） were enrolled between 2004 and 2011. The primary end point was all-cause death. The secondary end points were cardiac death, myocardial infarction, stroke, or repeat revascularization. Results： PCI, CABG, and MT alone were performed in 933 （52.1%）, 459 （25.6%）, and 400 （22.3%） patients. Both PCI and CABG were associated with lower all-cause death （4.6% vs. 4.1% vs. 15.5%, respectively, P 〈 0.01） and cardiac death （2.8% vs. 2.0% vs. 9.8%, respectively, P 〈 0.01 ） versus MT alone. The rate of repeat revascularization in the CABG group was significantly lower than those in the PCI and MT groups. After adjusting for baseline factors, PCI and CABG were still associated with similar lower risk of all-cause death and cardiac death versus MT alone （all-cause death： hazard ratio [HR]： 0.35, 95% confidence interval [CI]： 0.23-0.53, P 〈 0.01 and HR： 0.35, 95% CI： 0.18-0.70, P= 0.003, respectively, and cardiac death： HR： 0.32, 95% CI： 0.19-0.54, P〈 0.01 and HR： 0.36, 95% CI：0.14-0.93, P = 0.03, respectively）. Conclusions： PCI and CABG provided equal long-term benefits for all-cause death and cardiac death for PTVD patients. Patients undergoing MT alone had the worst long-term clinical outcomes.

Off-pump versus on-pump coronary artery bypass surgery for the treatment of left main with triple coronary artery disease

Objective：To obtain early results of off-pump coronarE~ artery bypass grafting（OPCAB） in patients with significant left main coronary artery（LMCA） and triple vessels stenosis by comparing with those of a similar group undergoing conventional coronary artery bypass surgery（CCAB）. Methods：Data for patients with significant LMCA and triple vessels stenosis who underwent CCAB or OPCAB were collected retrospectively between January 1999 and May 2006. Non-randomized, retrospective data analysis included demo- graphic and preoperative risk factors, operative details, clinical outcome and early follow-up. Results： The number of distal anastomo- sis and grafts varied from 3 to 6. The average number per patient was similar in the two groups （OPCAB group：3.76 ± 0.98, CCAB group：3.81 ± 1.02）. Thirty-day mortality occurred to one patient in the OPCAB group whereas two early deaths were observed in the CCAB group but did not reach statistical significance （P 〉 0.05）. The frequency of atrial fibrillation （AF）, IABP usage, mediastinitis, re-operation for bleeding （or tamponade） were similar in the two groups （P 〉 0.05）. Postoperative inotropic requirements, peak CKMB, ventilation time, blood loss, FFP, RBC transfusion need and the length of ICU-stay were all significantly lower in the OPCAB group compared with CCAB group（P 〈 0.05）.Conclusion： Significant LMCA and triple-vessel stenosis can safely and effectively undergo myocardial revascularization using OPCAB surgery. LMCA should no longer be seen as a contraindication to perform OPCAB grafting.