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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Atorvastatin and hormone therapy influence expression of ABCA1, APOA1 and SCARB1 in mononuclear cells from hypercholesterolemic postmenopausal women

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Cerda, Alvaro [1] ; Issa, Mustafa H. [1] ; Genvigir, Fabiana D. V. [1] ; Rohde, Cintia B. [1] ; Cavalli, Selma A. [1] ; Bertolami, Marcelo C. [2] ; Faludi, Andre A. [2] ; Hirata, Mario H. [1] ; Hirata, Rosario D. C. [1]
Total Authors: 9
[1] Univ Sao Paulo, Sch Pharmaceut Sci, BR-05508900 Sao Paulo - Brazil
[2] Sao Paulo State Secretary Hlth, Dante Pazzanese Inst Cardiol, Sao Paulo - Brazil
Total Affiliations: 2
Document type: Journal article
Web of Science Citations: 7

Background: Reverse cholesterol transport (RCT) has been inversely related to atherosclerosis and cardiovascular risk. The influence of menopause in the RCT process is poorly understood and the effects of cholesterol-lowering interventions, including statins and hormone therapy (HT), on genes controlling the RCT in postmenopausal women are also unknown. Methods: The effects on serum lipids and expression profile of genes involved in RCT - APOA1, ABCA1, ABCG1, SCARB1 and LXRA - were evaluated by TaqMan (R) quantitative PCR in peripheral blood mononuclear cells (PBMC) from 87 postmenopausal hypercholesterolemic women treated with atorvastatin (AT, n=17), estrogen or estrogen plus progestin (HT, n=34) and estrogen or estrogen plus progestin associated with atorvastatin (HT+AT, n=36). Results: Atorvastatin and HT treatments reduced the mRNA levels of APOA1 and SCARB1, respectively, whereas ABCA1 expression was reduced after all treatments. Although the expression of LXRA, an important transcription factor controlling the expression of genes involved in RCT, was not modified after any treatment, it was correlated with ABCA1, APOA1 and SCARB1 RNAm values before and after treatments, however no correlation with ABCG1 was observed. In a linear regression analysis, HT was related to an increase in apoAI levels after treatment when compared to atorvastatin and, moreover, higher SCARB1 and ABCA1 basal expression were also associated with decreased apoAI levels after treatments. Conclusion: ABCA1 mRNA levels are decreased by atorvastatin and HT, however these treatments have a differential effect on APOA1 and SCARB1 expression in PBMC from postmenopausal women. Basal ABCA1 and SCARB1 expression profile could be helpful markers in predicting the effect of atorvastatin and HT on RCT, according to the changes in apoAI levels in this sample population. (C) 2013 Elsevier Ltd. All rights reserved. (AU)

FAPESP's process: 09/15125-8 - Influence of cholesterol synthesis and absorption on expression of proteins of the cholesterol reverse transport in HepG2 and CACO-2 cells
Grantee:Rosario Dominguez Crespo Hirata
Support type: Regular Research Grants