Background: Vascular endothelial growth factor (VEGF) is an angiopoetic factor; its variability in circulating levels is mediated by expression of specific VEGF-A gene variants. The aim of this study was to investigate the predictive role of VEGF-A gene polymorphism in clinical outcomes of STelevation myocardial infarction (STEMI) patients.
Methods: For the study, 135 patients with acute STEMI and 30 healthy volunteers were enrolled. The G634C polymorphism in VEGF-A gene was performed by real-time polymerase chain reaction at baseline. The 6-month combined clinical endpoint was then determined. Design: The study was an open prospective single-center cohort study.
Results: The entire patient population was distributed into two groups based on the G634G-genotype (n = 70) and combination of G634C and C634C-genotypes (n = 65). Unadjusted multivariate regressive logistic analysis showed peak troponin I levels at admission, Killip class of heart failure > 2, GC/CC polymorphisms in VEGF-A gene, and dynamic increase of NT-pro brain natriuretic peptide (BNP) and VEGF-A levels for 6 months, which were independent predictors for the combined clinical endpoint. After adjustment for dynamic changes of NT-proBNP and VEGF-A levels, we found that GC/CC polymorphisms in the VEGF-A gene was an independent predictor of clinical outcome. Kaplan-Meier curves demonstrated that STEMI patients with GG VEGF-A genotype had a lower frequency of clinical combined endpoint accumulation when compared to those who had GC/CC VEGF-A genotypes (Log-rank p = 0.02).
Conclusion: The G634C polymorphism in the VEGF-A gene was found to be an independent predictor for 6-month clinical combined endpoint in STEMI patients.
Použití matrixové metalopeptidázy-9 (MMP-9) u pacientů s akutním infarktem myokardu s elevacemi úseku ST (STEMI) po perkutánní koronární intervenci (PCI) jako prognostického indikátoru má mnoho mezer a lékařská komunita s tím má velmi omezené zkušenosti. Cílem studie bylo zhodnotit prognostickou roli MMP-9 u pacientů se STEMI po úspěšné revaskularizaci během 12měsíčního období sledování. Materiál a metoda: Do studie bylo zařazeno 88 pacientů, kteří splnili kritéria pro zařazení a neměli žádná vylučovací kritéria, jimž byl diagnostikován STEMI a podstoupili primární PCI. Mužů bylo 66 (75,0 %), s průměrným věkem 60,84 ± 9,68 roku. Doba sledování činila 12 měsíců. Byl použit složený cílový ukazatel, který zahrnoval výskyt srdečního selhání, které si vyžádalo hospitalizaci, úmrtí z kardiovaskulárních příčin, recidivující infarkt myokardu, akutní cerebrovaskulární příhodu. Koncentrace MMP-9 byla stanovena pomocí ELISA. Výsledky: Kaplanova-Meierova analýza křivek ukázala významnou souvislost mezi zvýšenou MMP-9 a studovaným složeným cílovým ukazatelem, p = 0,0229. Pacienti s koncentracemi MMP-9 > 201,7 ng/ml měli signifi kantně více cílových ukazatelů. Jednorozměrná regresní analýza zjistila, že MMP-9 byla indikována jako nezávislá proměnná pro nepříznivý výsledek s poměrem šancí (OR):
Vascular endothelial growth factor A (VEGF-A) promotes the survival of endothelial cells during acute myocardial infarction, accelerates the development of collateral blood supply to ischemic myocardium, and affects the size diminishing of the necrotic lesion area. The synthesis of the VEGF- A in response to standard stimuli is different between people that is genetically determined. The aim was to study the association of polymorphous variants of the VEGF-A gene (G634C) with the dynamics of structural and functional parameters of left ventricle in patients with acute ST elevation myocardial infarction (STEMI) during a 6-month period.A significantly higher VEGF-A concentration was determined in the carriers of the GG genotype compared to the GC genotype (p = 0.047) in the acute period. It has been established that the genotype GC in patients with acute myocardial infarction ST-elevation (STEMI) is associated with more pronounced changes in the left ventricular geometry during the acute period. The GC genotype is associated with a better blood pressure control and a decrease in the left ventricle mass after 6 months’ observation.
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