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XbaI polymorphism of the estrogen receptor alpha gene influences the effect of raloxifene on the endothelial functionZavratnik, Andrej ...Objectives: Cardiovascular disease is the leading cause of death in postmenopausal women and estrogen deficiency may be an important factor in its development. The selective estrogen receptor ... modulator, raloxifene, exerts a part of its actions through the estrogen receptor alpha (ESR1) activation. We explored if polymorphisms of the ESR1 modify the effects of 6 months raloxifene treatment on endothelial function. Methods: A total of 53 postmenopausal women, mean age 59.7 6.2, finished the prospective clinical trial. The PvuII, XbaI, and P325P polymorphisms of the ESR1 gene were analyzed. In all subjects endothelium-dependent flow mediated dilatation (FMD) and cell adhesion molecules (CAM) ICAM-1, VCAM-1 and E-selectin were measured before and after 6 months of raloxifene treatment. Results: There was no difference in FMD between the ESR1 genotypes, at baseline. After raloxifene treatment, the FMD was significantly greater in subjects with XX genotype of XbaI polymorphism compared to xx (p = 0.03) and borderline greater when compared to Xx genotype (p = 0.053). The FMD increased significantly with raloxifene treatment in women with Xx genotype of XbaI and Pp genotype of PvuII polymorphisms (p = 0.027 and p = 0.034, respectively). The P325P polymorphism did not influence the FMD after raloxifene. None of the ESR1 gene polymorphisms had any impact on the levels of CAM before or after the treatment. When analysing the whole group, a significant decrease in E-selectin (p < 0.001) and a small increase in ICAM-1 levels (p = 0.029) was observed with raloxifene treatment, but no influence on VCAM-1 levels or FMD overall was seen. Conclusion: Our data suggest that XbaI and possibly PvuII polymorphisms of the ESR1 gene influence the impact of raloxifene treatment on endothelial function. This effect could be of pharmacogenomic and clinical importance.Vir: Maturitas. - ISSN 0378-5122 (Vol. 67, no. 1, Sep. 2010, str. 84-90)Vrsta gradiva - članek, sestavni del ; neleposlovje za odrasleLeto - 2010Jezik - angleškiCOBISS.SI-ID - 2836081
Avtor
Zavratnik, Andrej |
Žegura, Branka |
Marc, Janja |
Preželj, Janez |
Pfeifer, Marija
Teme
Polymorphism, Genetic |
Genetski polimorfizem |
Postmenopause |
Pomenopavza |
Raloxifene |
Raloksifen |
Polymorphism, Genetic |
Polimorfizem, genetika |
Cardiovascular Diseases |
Kardiovaskularne bolezni |
Receptors, Estrogen |
Estrogenski receptorji |
Endothelium, Vascular |
Endotelij, vaskularni
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Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
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Zavratnik, Andrej | 23785 |
Žegura, Branka | 21099 |
Marc, Janja | 12189 |
Preželj, Janez | 01989 |
Pfeifer, Marija | 05984 |
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