Diagnostically important predictive factors for in-stent resteosis in patients with ischemic heart disease

Author(s):  
Л.М. Огородова ◽  
К.Ю. Рукин ◽  
И.В. Петрова ◽  
С.И. Винтизенко

В последние годы все больше внимания уделяется интервенционным способам лечения ИБС. Однако, несмотря на многочисленные клинические исследования остается нерешенным вопрос рестенозирования стентов после интервенционных вмешательств. На сегодняшний день становится актуальным изучение молекулярных механизмов рестенозирования коронарных артерий, а также поиск новых генетически обусловленных предикторов развития рестеноза после стентирования. Воздействие NO-синтаз на развитие дисфункции эндотелия не вызывает сомнения, в то же время исследования, посвященные изучению влияния полиморфизма генов NOS на вероятность рестенозирования в стенте единичны и основаны на небольшом количестве клинических наблюдений. Вышесказанное свидетельствует об актуальности данного исследования, результаты которого сформировали новые представления о роли генов NO-синтаз в формировании предрасположенности к гиперпролиферации стентов у больных с ИБС. Цель работы - выделение диагностически значимых факторов-предикторов рестеноза после стентирования коронарных артерий у паицентов с ИБС и определение их чувствительности и специфичности при помощи ROC-кривых. Методика: в основу данного исследования положены результаты целенаправленного обследования 484 пациентов с верифицированным диагнозом ИБС, находившихся на лечении в отделении атеросклероза и хронической ишемической болезни сердца ФГБНУ «Научно-исследовательский институт кардиологии» СО РАН. Стентирование коронарных артерий было проведено у 210 чел. - группа рестеноза (n = 60) и группа без рестеноза (n = 150). Исследование генотипа проводили путем выделения геномной ДНК из цельной венозной крови обследуемых по стандартной неэнзиматической методике, а также исследования полиморфизмов генов NOS методом полимеразной цепной реакции (ПЦР). Результаты. Установлено 6 предикторов развития рестенозирования после стентирования при ИБС: протяженность стеноза, сужение коронарной артерии (% стеноза), полиморфизм 894G/T, наличие в анамнезе АГ, наличие у больного гаплотипов TCabGT11 и TTabGG11, определена их чувствительность и специфичность при помощи ROC-кривых. Установлено, что в Сибирской популяции у носителей гаплотипа TCabGT11 наиболее вероятно развитие рестенозирования в стенте, а при наличии гаплотипа TTabGG11 риск рестенозирования минимален. Заключение. Полиморфизмы 894 G/T гена eNOS ассоциированы с риском развития рестеноза, что может быть использовано как дополнительные маркеры риска развития рестеноза после стентирования коронарных артерий. In recent years, growing attention has been paid to interventional treatment of ischemic heart disease (IHD). However, despite numerous clinical studies, the issue of in-stent restenosis following interventions remains unsolved. At present, studying molecular mechanisms of coronary restenosis along with searching for new, genetically determined predictors of in-stent restenosis has become relevant. Effects of NO synthases on development of endothelial dysfunction are above any doubt; however, studies focusing on the effect of NOS gene polymorphism on probability of in-stent restenosis are scarce and based on a small number of clinical observations. Therefore, the present study is highly relevant as it has resulted in development of new concepts on the role of NO-synthase genes in predisposition to in-stent hyperproliferation in patients with IHD. The aim of this study was to identify diagnostically significant, predictive factors for in-stent coronary restenosis in patients with ischemic heart disease and to determine their sensitivity and specificity using ROC curves. Methods. This study was based on data from a targeted evaluation of 484 patients with a verified diagnosis of IHD who were managed at the Department of Atherosclerosis and Chronic Ischemic Heart Disease of the Research Institute of Cardiology, Siberian Branch of the Russian Academy of Medical Sciences. Coronary artery stenting was performed for 210 patients divided into two groups, with restenosis (n = 60) and without restenosis (n = 150). The genotype was studied on isolated genomic DNA from whole venous blood using a standard non-enzymatic technique, as well as by studying NOS gene polymorphisms using the polymerase chain reaction (PCR). Results. Six predictors for in-stent restenosis in IHD were identified - stenosis length, per cent narrowing of the coronary artery (% stenosis), 894G/T polymorphism, history of arterial hypertension, presence of TCabGT11 and TTabGG11 haplotypes, and their sensitivity and specificity determined with ROC curves. In the Siberian population, development of in-stent restenosis most likely occurred in carriers of the TCabGT11 haplotype while the risk for restenosis was minimal in the presence of the TTabGG11 haplotype. Сonclusion. The 894 G/T eNOS gene polymorphisms are associated with a risk for restenosis and might be used as additional markers for the risk of restenosis following coronary stenting.

2017 ◽  
Vol 72 (2) ◽  
pp. 120-125
Author(s):  
L. M. Ogorodova ◽  
K. Y. Rukin ◽  
S. I. Vintizenko ◽  
I. V. Petrova

Background: In recent years more attention is paid to the methods of interventional treatment of coronary artery disease. However, despite the numerous clinical studies the problem of stent restenosis after interventional procedures remains an important one. The studies of the molecular mechanisms of restenosis of coronary arteries and findings for new genetically determined predictors of restenosis after stenting become vital and essential. The NO-synthase influence on the development of endothelial dysfunction is practically assured, but the studies on the NOS genes' polymorphism effect on the incidence rate of in-stent restenosis are isolated and based on a limited number of clinical observations. The determined facts demonstrate the relevance of the conducted study, the results of which formed a new understanding of the role of NO-synthase genes in the predisposition to hyper-proliferative stents in patients with coronary artery disease. Aims: Set association between the eNOS gene polymorphisms and the risk of restenosis in patients with coronary artery disease hospitalized for coronary restenosis.Materials and methods: We examined 484 patients with the verified diagnosis of the ischemic heart disease who underwent treatment at the unit of atherosclerosis and chronic coronary heart disease of «Cardiology Research Institute». Stenting of coronary arteries was performed in 210 people. The group of a restenosis enrolled 60 patients and the group without restenosis — 150. Genotyping was performed by non-enzymatic technique for isolation of genomic DNA from the venous blood of the surveyed, NOS genes' polymorphisms were detected by polymerase chain reaction (PCR). Results: The established development of in-stent restenosis was associated with the following eNOS gene polymorphisms: VNTR ― in homozygotes for the minor allele (genotype aa) and heterozygotes (genotype ab); 894G/T ― in heterozygotes (the GT genotype) and homozygotes (TT genotype).Conclusions: VNTR and 894G/T polymorphisms of eNOS gene are associated with risk for restenosis and can serve as additional markers for risk of restenosis after coronary stenting.


2020 ◽  
Vol 26 ◽  
Author(s):  
Maria Bergami ◽  
Marialuisa Scarpone ◽  
Edina Cenko ◽  
Elisa Varotti ◽  
Peter Louis Amaduzzi ◽  
...  

: Subjects affected by ischemic heart disease with non-obstructive coronary arteries constitute a population that has received increasing attention over the past two decades. Since the first studies with coronary angiography, female patients have been reported to have non-obstructive coronary artery disease more frequently than their male counterparts, both in stable and acute clinical settings. Although traditionally considered a relatively infrequent and low-risk form of myocardial ischemia, its impact on clinical practice is undeniable, especially when it comes to infarction, where the prognosis is not as benign as previously assumed. Unfortunately, despite increasing awareness, there are still several questions left unanswered regarding diagnosis, risk stratification and treatment. The purpose of this review is to provide a state of the art and an update on current evidence available on gender differences in clinical characteristics, management and prognosis of ischemic heart disease with non-obstructive coronary arteries, both in the acute and stable clinical setting.


1969 ◽  
Vol 23 (1) ◽  
pp. 127-128
Author(s):  
J.A. McEachen ◽  
R.T. Smith ◽  
J.A. Cannon ◽  
P.G. Gaal ◽  
J.H. Davis ◽  
...  

Author(s):  
Harindra C Wijeysundera ◽  
Feng Qiu ◽  
Maria C Bennell ◽  
Madhu K Natarajan ◽  
Warren J Cantor ◽  
...  

Background: Wide variation exists in the diagnostic yield of coronary angiography in stable ischemic heart disease (IHD). Previous work has primarily focused on patient factors for this variation. We sought to understand if system and physician factors, specifically hospital and physician type, as well as physician self-referral, have incremental impacts on the yield of coronary angiography, above and beyond that of patient factors alone. Methods: All patients who underwent a diagnostic coronary angiogram for possible stable IHD, at the 18 cardiac centers in Ontario, Canada were identified from October 1st, 2008 to September 30th, 2011. Obstructive coronary artery disease was defined as stenosis greater than 70% in the main coronary arteries or greater than 50% in the left main artery. Physicians were classified as either invasive or interventional. Hospitals were categorized into cath only, stand-alone PCI and full service centers. Multi-variable hierarchical logistic models were developed to identify system and physician level predictors of obstructive coronary artery disease, having adjusted for patient factors. Results: Our cohort consisted of 60,986 patients who underwent a diagnostic angiogram for possible stable IHD, of which 33,483 had obstructive coronary artery disease (54.9%), ranging from 41.0% to 70.2% across centers. Self-referral rates varied from 4.8% to 74.6%. Fewer self-referral patients (52.5%) had obstructive coronary artery disease compared to non-self-referral patients (56.5%), with an odds ratio (OR) of 0.89 (95% CI 0.85-0.93;p <0.001), after accounting for patient factors. Angiograms performed by interventional physicians had a higher likelihood of showing obstructive coronary artery disease (60.1% vs. 50.8%; OR 1.22; 95% CI 1.17-1.28; p<0.001). Fewer angiograms at cath only centers showed obstructive disease (45.0%) compared to full service centers (58.1%); this was of borderline significance (OR 0.59; 95% CI 0.34-1.00; p=0.05). Conclusion: Physician and system factors are important predictors of the diagnostic yield of coronary angiography in stable IHD, even after accounting for patient characteristics. Further study into the drivers of how these physician and system factors impact diagnostic yield is an important focus for quality improvement.


1982 ◽  
Vol 63 (3) ◽  
pp. 15-17
Author(s):  
E. V. Tsybulina ◽  
L. A. Emelyanova

A comparative analysis of the effectiveness of antianginal drugs (papaverine, persantine, intensain, nitrong, anaprilin) in combination with climacteric myocardial dystrophy in women was carried out. The data obtained make it possible to recommend beta-blockers (anaprilin, obzidan) for the treatment of coronary artery disease in women against the background of pathological menopause for wider use.


2020 ◽  
Vol 41 (Supplement_2) ◽  
Author(s):  
T Rasmussen ◽  
B Borregaard ◽  
P Palm ◽  
R Mols ◽  
A.V Christensen ◽  
...  

Abstract Background Though survival has improved markedly in ischemic heart disease (IHD), it remains a leading cause of death worldwide. Screening tools to identify patients at risk are ever in demand. Large-scale studies exploring the association between patients' self-reported mental and physical health and mortality are lacking. Purpose (i) to describe patient-reported outcomes (PROs) at discharge in IHD patients deceased and alive at one year, (ii) to investigate the discriminant predictive performance of PRO instruments on mortality, (iii) to investigate differences in time to death among survey responders/non-responders and among three diagnostic sub-groups (chronic ischemic heart disease/stable angina, non-STEMI/unstable angina and STEMI), and (iv) to investigate predictors of one-year mortality among sociodemographic, clinical and self-reported factors. Methods Data from the national DenHeart survey with register-data linkage was used. A total of 14,115 adults with IHD were discharged during one year. Eligible (n=13,476) were invited to complete a questionnaire and 7,167 (53%) responded. Questionnaires included the Health survey short form 12-items (SF-12), Hospital Anxiety and Depression Scale (HADS), EuroQoL-5-dimensions (EQ-5D), HeartQoL, Edmonton Symptom Assessment Scale (ESAS) and ancillary questions. Clinical and demographic characteristics were obtained from registries as were data on one-year mortality. Comparative analyses investigated differences in PROs, and discriminant PRO-performance was explored by Receiver Operating Characteristics (ROC) curves. Kaplan-Meier survival analysis explored differences in time to death across sub-groups. Predictors of mortality were explored using multifactorially adjusted cox regression analyses with time to death as underlying timescale. Results Highly significant and clinically important differences in PROs were found between those alive and those deceased at one year. The best discriminant performance was observed for the physical component scale of the SF-12 (Area Under the Curve (AUC) 0.706) (Figure 1). One-year mortality among responders and non-responders was 2% and 7%, respectively. Significant differences in time to death was observed between responders and non-responders (p&lt;0.001) and among diagnostic subgroups (p&lt;0.001). Strongest predictors of one-year mortality included STEMI (hazard ratio (HR) 2.9 95% confidence interval (CI) 2.3–3.7), Tu comorbidity index score 3+ (HR 3.6, 95% CI 2.7–4.8) and patient-reported feeling unsafe about returning home from hospital (HR 2.07, 95% CI 1.2–3.61). Conclusions One-year post-discharge mortality was expectedly low, however notably higher in certain subgroups. Though clinical predictors may be difficult to modify, factors such as feeling unsafe about returning home should be addressed at discharge. PRO-performance estimates may guide clinicians and researchers in choosing appropriate predictive patient-reported outcome tools. Figure 1. PRO instruments ROC curves Funding Acknowledgement Type of funding source: None


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