Journals / Anadolu Kardiyoloji Dergisi / 2008 / Cilt: 8 - Sayı: 1

Effect of angiotensin converting enzyme genotype on endothelial function in healthy subjects

Sağlıklı bireylerde endotel fonksiyonları üzerine anjiyotensin dönüştürücü enzim genotipinin etkisi

Pages
2–6
Publication Date
2022-10-10
DOI
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Endothelium independent dilatations were similar among different ACE genotypes.Conclusion: Our data showed that ACE genotype has no effect on endothelial functions in patients without risk factors for coronary arterydisease.

📌 3 Key Takeaways

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Objective & Hypothesis:Objective: Endothelial dysfunction is an early marker of atherosclerosis.
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Key Findings & Data:Participants were further divided into three groups according with ACE genotypes: DD genotype - 24 subjects, DI genotype - 13 subjects and II genotype - 9 subjects.
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Conclusion & Impact:Endothelium independent dilatations were similar among different ACE genotypes.Conclusion: Our data showed that ACE genotype has no effect on endothelial functions in patients without risk factors for coronary arterydisease.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Objective: Endothelial dysfunction is an early marker of atherosclerosis. Angiotensin II and nitric oxide have important roles in maintaining the vascular tone. The existence of the angiotensin converting enzyme (ACE) gene polymorphisms has been known, and deletion (D) of the allele has been associated with coronary artery disease. As ACE genotype affects endothelial functions in the patients with risk factors for coronary artery disease, it may also be a determinant of atherosclerosis. In this study, the relationship between endothelial function and ACE gene polymorphisms was investigated in healthy young subjects. Methods: Forty-six healthy young subjects were included in this cross-sectional, randomized study. Participants were further divided into three groups according with ACE genotypes: DD genotype - 24 subjects, DI genotype - 13 subjects and II genotype - 9 subjects. All patients underwent brachial artery ultrasonographic examination. We analyzed ACE insertion (I) and D allele frequencies in all subjects. Kruskal-Wallis test was used to compare continuous variables, and the Chi-square test was used to compare proportions among groups. Results: Demographic features were similar except gender between the groups according to the ACE genotypes. Total cholesterol levels were lower in the DD genotype comparing with the others (pİ0.05). High-density lipoprotein cholesterol levels, baseline brachial artery diameter, baseline blood flow and the increase in the blood flow during the reactive hyperemia were also similar. The changes in flow-mediated dilatation (endothelium dependent) were 4.9±1.3% in DD genotype, 5.5±1.7% in DI genotype and 5.5±1.9% in II genotype groups. Flow mediated dilatation was lower in DD genotype group as compared with ID and II genotype groups, however, this result did not reach statistical significance (p>0.05). Endothelium independent dilatations were similar among different ACE genotypes.Conclusion: Our data showed that ACE genotype has no effect on endothelial functions in patients without risk factors for coronary arterydisease.

Özet

Amaç: Endotel disfonksiyonu aterosklerozun erken bir bulgusudur. Anjiyotensin dönüştürücü enzim (ADE) I/D gen polimorfizminin koroner arter hastalığıyla ilişkisi bilinmektedir. Delesyon (D) alleli varlığında artmış olan anjiyotensin II düzeyleri endotel fonksiyonlarını etkileyerek ateroskleroz gelişiminde belirleyici bir rol oynayabilir. Ancak günümüze kadar yapılan çalışmaların birçoğunda ADE genotipinin endotel fonksiyonları üzerindeki belirleyici etkisi bilinen kardiyovasküler risk faktörleri varlığında gösterilmiştir. Bu çalışmadaki amacımız, bilinen kardiyovasküler risk faktörü olmayan sağlıklı genç bireylerde endotel fonksiyonu ile ADE gen polimorfizmi arasındaki ilişkiyi araştırmaktır. Yöntemler: Bu kros-seksiyonel, randomize çalışmaya 46 sağlıklı genç birey alındı. Bireyler daha sonra ADE genotiplerine göre 3 gruba ayırldı: DD genotip - 24 birey, DI genotip - 13 birey ve II genotip - 9 birey. Tüm katılımcılara yüksek çözünürlüklü ultrasonografi kullanılarak brakiyal arterden akıma bağlı ve akımdan bağımsız vazodilatasyon araştırıldı. Çalışma populasyonun periferik kan örnekleri PCR yardımıyla analiz edilerek ADE genotipleri belirlendi. Genotipler arası verilerin karşılaştırılmasında Kruskall Wallis ve Ki-kare testleri kullanıldı. Bulgular: Anjiyotensin dönüştürücü enzim genotipleri arasında, cinsiyet dışındaki demografik verilerin dağılımları benzerdi. Total kolesterol değerleri, DD genotipinde diğer genotiplere oranla daha düşüktü (pİ0.05). HDL kolesterol, bazal brakiyal arter çapı, bazal kan akımı, reaktif hiperemi sırasında kan akımındaki artış her üç ADE genotipinde benzerdi (p>0.05). Akıma bağlı dilatasyon (ABD), DD genotipinde (%4.9±1.3), ID genotipinde (%5.5±1.7) ve II genotipinde (%5.5±1.9) olarak bulundu. DD genotipinde ABD diğer genotiplere göre biraz daha düşük olmakla birlikte bu farklılık istatistiksel olarak anlamlı değildi (p>0.05). Endotelden bağımsız dilatasyon, ADE genotipleri arasında benzer olarak bulundu.Sonuç: Anjiyotensin dönüştürücü enzim genotipinin, koroner arter hastalığı için risk faktörü bulunmayan bireylerde, endotel fonksiyonları üzerinde belirleyici etkisinin olmadığı sonucuna ulaşıldı.

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Cite This Article

KILIÇ, M., DURSUNOĞLU, D., KILIÇ, D., TURGUT, G., TURGUT, S., TÜZÜN, N., EVRENGÜL, H., TANRIVERDİ, H., TANRIVERDİ, S. (2022). Effect of angiotensin converting enzyme genotype on endothelial function in healthy subjects. Anadolu Kardiyoloji Dergisi, Cilt: 8 - Sayı: 1, 2–6. https://ajindex.com/articles/437082

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