803 resultados para soy isoflavone


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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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The objective was to evaluate the effect of soy fermented product intake on the corporal weight and bone tissue of ovariectomized mature rats. This product was fermented with Enterococcusfaecium and Lactobacillus jugurti and enriched with isoflavones and calcium. The animals were divided in 5 groups: sham-ovariectomized; ovariectomized; ovariectomized treated with soy fermented product enriched with isoflavones and calcium; ovariectomized treated with soy fermented product enriched with calcium and ovariectomized treated with nonfermented product enriched only with calcium. In order to evaluate the effect of the tested product on bone tissue (femur and tibia), the following parameters were analyzed: length; mechanical assay of three points; density (Archimedes principle); mineral content; calcium content; measure of the trabecular widths. The corporal weight of group treated with soy fermented product containing isoflavones and calcium showed no statistical difference from sham-ovariectomized group and trabecular widths tended to have larger than ovariectomized group. However, there was no significant difference to the other evaluated parameters in result of the diverse treatments. Thus, soy fermented product enriched with isoflavones and calcium inhibited the increasing of corporal weight caused by ovariectomy and revealed a tendency to trabecular protection after castration.

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Study of Liposomes Stability Containing Soy Phosphatidyleholine and Hydrogenated Soy Phosphatydylcholine Adding or Not Cholesterol by Turbidity Method. Liposomes are structures composed by phospholipids as soy phosphatidylcholine (PC) and hydrogenated soy phosphatydylcholine (PCH). Among the methods used to prove liposomes stability, turbidity method is widely used. The objective of this work was to study the liposomes stability containing PC or PCH with and without cholesterol (CHOL) by turbidity method. Liposomes were stored a 30 degrees C during 90 days and periodically absorbance readings at 410 nm were made to verify possible turbidity alterations. Increases in the turbidity with time occurred for PC liposomes. In the presence of CHOL higher turbidity was obtained probably reflecting the increase in the size of liposomes. For PCH liposomes the presence of CHOL did not affect the turbidity suggesting higher physical stability of the structures.

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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OBJETIVO: avaliar os efeitos da isoflavona, do gérmen da soja, sobre os sintomas climatéricos e o perfil lipídico na mulher em menopausa. MÉTODOS: foi conduzido estudo prospectivo, com 50 mulheres em menopausa, divididas em: G1, usuárias de isoflavona (60 mg/dia) (n=25), e G2, placebo (n=25). Os critérios de inclusão foram FSH >40 mUI/mL e presença de fogachos. Foram excluídas as vegetarianas, fumantes, asiáticas, portadoras de doenças gastrointestinais e usuárias de terapia de reposição hormonal. No seguimento, de seis meses, foram obtidos o índice menopausal de Kupperman (IMK), o perfil hormonal e o lipídico. Na análise estatística, empregaram-se ANOVA, o teste t pareado e as provas não paramétricas de Wilcoxon e Mann-Whitney. RESULTADOS: os valores medianos do IMK, inicialmente iguais entre os grupos (IMK = 20), reduziram-se nas usuárias de isoflavona aos 2 e 4 meses (IMK = 14 e 9, respectivamente) e no grupo controle, apenas aos 2 meses (IMK = 15) (p<0,01). Ao final do estudo, a isoflavona foi superior ao placebo na redução dos fogachos (44% versus 12%, respectivamente). Aos seis meses, verificou-se que os valores médios de estradiol foram superiores no G1 quando comparados ao G2 (18,0 ± 6,7 versus 12,3 ± 3,8 ng/dL) (p<0,05), sem alterações no FSH e LH. Entre as usuárias de isoflavona, houve redução de 11,8% no LDL (de 151,5 ± 39,2 para 133,6 ± 26,4 mg/dL) e elevação de 27,3% no HDL (de 44,0 ± 11,3 para 56,0 ± 11,9 mg/dL) (p<0,05). CONCLUSÕES: a isoflavona, do gérmen da soja, induziu efeitos favoráveis sobre os sintomas climatéricos e o perfil lipídico, revelando-se opção interessante como terapêutica alternativa para mulheres em menopausa.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Hormone decline is common to all women during aging and, associated with other factors, leads to cognitive impairment. Its replacement enhances cognitive performance, but not all women present a clinical and family or personal history that justifies its use, mainly women with a history of cancer. The aim of this study was to determine whether a daily oral dose of 80 mg of isoflavone extract for 4 months can produce benefits in women with low hormone levels, contributing to improvement in cognitive aspects. The sample comprised 50- to 65-year-old women whose menstruation had ceased at least 1 year before and who had not undergone hormone replacement. The volunteers were allocated to two groups of 19 individuals each, i.e., isoflavone and placebo. There was a weak correlation between menopause duration and low performance in the capacity to manipulate information (central executive). We observed an increase in the capacity to integrate information in the group treated with isoflavone, but no improvement in the capacity to form new memories. We did not observe differences between groups in terms of signs and symptoms suggestive of depression according to the Geriatric Depression Scale. Our results point to a possible beneficial effect of isoflavone on some abilities of the central executive. These effects could also contribute to minimizing the impact of memory impairment. Further research based on controlled clinical trials is necessary to reach consistent conclusions.