Effects of Aspirin on Intra-Platelet Vascular Endothelial Growth Factor, Angiopoietin-1, and P-Selectin Levels in Hypertensive Patients

Sunil Nadar, Andrew D. Blann, Gregory Y.H. Lip*

*المؤلف المقابل لهذا العمل

نتاج البحث: المساهمة في مجلةArticleمراجعة النظراء

26 اقتباسات (Scopus)

ملخص

Background: Although aspirin is useful in reducing platelet activation and cardiovascular events, its effects on platelet levels of angiogenic factors, such as vascular endothelial growth factor (VEGF) and angiopoietin-1 (Ang-1), and markers of platelet activation in hypertension are unknown. The aim of this study was to study the effects of aspirin on the platelet morphology, plasma and platelet levels of VEGF (sVEGF and pVEGF respectively), Ang-1 (sAng-1 and pAng-1 respectively), and P-selectin (sPsel and pPsel respectively) in patients with well controlled hypertension. Methods: A total of 35 aspirin-naive, hypertensive patients (29 male and six female; mean age 64 years) were compared with 30 (23 male, seven female, mean age 59 years) normotensive control subjects. Blood was collected for plasma VEGF, P-selectin, and Ang-1 (enzyme-linked immunoassay), intra-platelet levels of VEGF, Ang-1, and P-selectin, and platelet volume and mass. Research indices in hypertensive patients were studied before and after 3 months treatment with aspirin 75 mg daily. Results: Hypertensive patients had significantly higher plasma levels of VEGF (P = .04), Ang-1 (P < .001), as well as pVEGF (P = .008), pAng-1(P = .001), sPsel (P = .02), pPsel (P < .001), and mean platelet mass (P = .01) when compared with control subjects. After treatment with aspirin for 3 months, there were significant reductions in plasma VEGF (P = .01), pAng-1 (P = .04), sPsel (P = .001), and pPsel (P < .001) levels, but not levels of platelet VEGF and plasma Ang-1. Neither pVEGF nor pAng-1 correlated with blood pressure or with their respective plasma levels. Conclusions: The use of aspirin in high-risk hypertensive patients leads to a reduction in intra-platelet angiogenic growth factors and platelet activation. This may have implications for the use of aspirin in conditions (such as vascular disease) that have been associated with an increase in angiogenesis and platelet activation.

اللغة الأصليةEnglish
الصفحات (من إلى)970-977
عدد الصفحات8
دوريةAmerican Journal of Hypertension
مستوى الصوت19
رقم الإصدار9
المعرِّفات الرقمية للأشياء
حالة النشرPublished - سبتمبر 2006
منشور خارجيًانعم

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بصمة

أدرس بدقة موضوعات البحث “Effects of Aspirin on Intra-Platelet Vascular Endothelial Growth Factor, Angiopoietin-1, and P-Selectin Levels in Hypertensive Patients'. فهما يشكلان معًا بصمة فريدة.

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