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	Provedor de dados BJMBR (3) Autor Abreu,G.R. (1) Bissoli,N.S. (1) Borgo,M.V. (1) Brito,L.M.O. (1) Brusaca,S.A. (1) Castrucci,A.M.L. (1) Gouvêa,S.A. (1) Lopes,A.B. (1) Martins,D.M.F. (1) Moyses,M.R. (1) Romero,W.G. (1) Sarti,M.S.M.V. (1) Souza,R.D.M. (1) Vidal,F.C.B. (1) Visconti,M.A. (1) Mais... Palavra-chave Tamoxifen (3) Breast cancer (1) Cell proliferation (1) Coronary (1) Cytochrome P450 2D6 (1) Disease-free survival (1) Estrogen (1) Genetic polymorphisms (1) Human melanoma (1) Hypertension (1) Menopause (1) Prognostic factors (1) SK-Mel 23 cell line (1) SS-estradiol (1) Tyrosinase activity (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Info:eu-repo/semantics/other (1) Ano 2014 (1) 2011 (1) 2004 (1) País Brazil (3) Idioma Inglês (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Biological activity and binding of estradiol to SK-Mel 23 human melanoma cells BJMBR Sarti,M.S.M.V.; Visconti,M.A.; Castrucci,A.M.L.. Patients expressing estradiol receptors in melanoma cells have been reported to have a better prognosis. We therefore decided to investigate the in vitro effects of ß-estradiol and tamoxifen on the growth and tyrosinase activity of SK-Mel 23 human melanoma cells. Twenty-four-hour treatment with 0.4 nM ß-estradiol inhibited cell proliferation in 30% (0.70 ± 0.03 x 10(5) cells) and increased tyrosinase activity in 50% (7130.5 ± 376.5 cpm/10(5) cells), as compared to untreated cells (1.0 ± 0.05 x 10(5) cells and 4769 ± 25.5 cpm/10(5) cells, respectively). Both responses were completely (100%) blocked by 1 µM tamoxifen. Higher concentrations (up to 1.6 nM) or longer treatments (up to 72 h) did not result in a larger effect of the hormone on proliferation or... Tipo: Info:eu-repo/semantics/other Palavras-chave: SK-Mel 23 cell line; Human melanoma; SS-estradiol; Tamoxifen; Cell proliferation; Tyrosinase activity. Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2004000600016 Determination of CYP2D6 *3, *4, and *10 frequency in women with breast cancer in São Luís, Brazil, and its association with prognostic factors and disease-free survival BJMBR Martins,D.M.F.; Vidal,F.C.B.; Souza,R.D.M.; Brusaca,S.A.; Brito,L.M.O.. The CYP2D6 enzyme is crucial for the metabolism of tamoxifen. The CYP2D6 gene is highly polymorphic, and individuals can be extensive, intermediate, or poor tamoxifen metabolizers. The aim of this study was to determine the frequencies of the CYP2D6 *3, *4, and *10 alleles in women with breast cancer who were treated with tamoxifen and analyze the association of enzyme activity with prognostic factors and disease-free survival. We observed a high frequency of CYP2D6 *10, with an allelic frequency of 0.14 (14.4%). The *3 allele was not present in the studied population, and *4 had an allelic frequency of 0.13 (13.8%). We conclude that patients with reduced CYP2D6 activity did not present worse tumor characteristics or decreased disease-free survival than... Tipo: Info:eu-repo/semantics/article Palavras-chave: Tamoxifen; Cytochrome P450 2D6; Breast cancer; Genetic polymorphisms; Prognostic factors; Disease-free survival. Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2014001101008 Effect of tamoxifen on the coronary vascular reactivity of spontaneously hypertensive female rats BJMBR Borgo,M.V.; Lopes,A.B.; Gouvêa,S.A.; Romero,W.G.; Moyses,M.R.; Bissoli,N.S.; Abreu,G.R.. Tamoxifen has been associated with a reduction in the incidence of myocardial infarction. However, the effects of tamoxifen on coronary reactivity have not been fully elucidated. The objective of this study was to determine the effects of chronic treatment with tamoxifen on coronary vascular reactivity in spontaneously hypertensive rats (SHR). Female SHR were divided into four groups (N = 7 each): sham-operated (SHAM), sham-operated and treated with tamoxifen (10 mg/kg) by gavage for 90 days (TAMOX), ovariectomized (OVX), and ovariectomized and treated with tamoxifen (OVX+TAMOX). Mean arterial pressure (MAP), heart rate (HR), coronary perfusion pressure (CPP), and coronary vascular reactivity were measured. MAP and HR were reduced (9.42 and 11.67%,... Tipo: Info:eu-repo/semantics/article Palavras-chave: Tamoxifen; Estrogen; Hypertension; Menopause; Coronary. Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2011000800008 Registros recuperados: 3 Primeira ... 1 ... Última

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