RESUMO
The R230C variant of the ATP-binding cassette transporter A1 (ABCA1) gene has been consistently associated with decreased HDL-cholesterol (HDL-C) concentrations in several studies in the Mexican mestizo population. However, information on how diet composition modifies the effect of the ABCA1-R230C variant on HDL-C concentrations is very scarce. The aim of the present study was to analyze whether the effect of ABCA1-R230C on HDL-C concentrations is modulated by dietary factors in a nationwide population sample of 3591 adults from the National Health and Nutrition Survey conducted by the State's Employees' Social Security and Social Services Institute. All participants answered a validated questionnaire to assess health status and weekly food consumption. Fasting blood samples were drawn for biochemical analysis and DNA extraction, and the ABCA1-R230C variant was genotyped using TaqMan assays. Statistical analyses consisted of simple linear and multiple regression modeling adjusting for age, BMI, smoking, and alcohol consumption. The overall C risk allele frequency was 9.3% and the variant was significantly associated with low HDL-C concentrations in both sexes. A significant negative correlation between carbohydrate consumption and HDL-C concentrations was observed in women bearing the R230C variant (P = 0.021) and a significant gene-diet interaction was found only in premenopausal women (P = 0.037). In conclusion, the effect of the ABCA1-R230C gene variant on HDL-C concentrations is modulated by carbohydrate intake in premenopausal women. This finding may help design optimized dietary interventions according to sex and ABCA1-R230C genotype.
Assuntos
Transportadores de Cassetes de Ligação de ATP/genética , Transportadores de Cassetes de Ligação de ATP/metabolismo , HDL-Colesterol/sangue , Carboidratos da Dieta/administração & dosagem , Variação Genética , Pré-Menopausa , Transportador 1 de Cassete de Ligação de ATP , Adulto , Alelos , Estudos Transversais , Inquéritos sobre Dietas , Carboidratos da Dieta/farmacologia , Feminino , Genótipo , Humanos , Masculino , México , Pessoa de Meia-Idade , Pré-Menopausa/sangue , Pré-Menopausa/genética , Fatores de Risco , Caracteres Sexuais , Inquéritos e QuestionáriosRESUMO
OBJECTIVE: Jamaica has long been considered to be a homophobic society. The aim of this survey was to examine the attitudes of the Jamaican populance towards homosexuality, thus shedding light on the important issue of homosexuality, disclosure of one's sexual preference and the relationship to the HIV/AIDS epidemic. METHODS: There have been several subjective reports on the issue of homosexuality in Jamaica. Many of these reports have suggested that Jamaica is not truly a homophobic society. No objective study on attitudes towards homosexuality in Jamaica has been done to date; this is an attempt in that regard. A survey was conducted in the Kingston and St.Andrew region. A questionnaire consisting of 17 knowledge and attitude items with six items to determine demographic data was prepared. This was administered to every third person in 6 designated areas, ensuring that equal numbers of males and females aged 16 years and over were polled. RESULTS: The analysis indicates that the majority of those surveyed thought that the homosexuality lifestyle was unaccepatable. Of significance, views varied depending on the level of educational attainment: 100 percent of persons with primary level education found homosexuality unacceptable in contrast with 76 percent of those with teritiary level education with a similar opinion (p=0.028). There was a generally negative attitude towards befriending an acknowledged homosexual or having such persons in positions of authority. Many participants agreed that homosexual partners should have access to social services, including insurance plans, with 37 percent in outright agreement and 21 percent remaining neutral. There was a dramatic decrease in the number of persons who believed that HIV was solely a homosexual disease (13 percent) in contrast with the results of a 1989 survey conducted by the Ministry of Health (81 percent). CONCLUSION: Despite changing global opinions of the homosexual lifestyles, several biases still remain within the Jamaican society. These conditions force homosexuals to remain ensconced within the cloak of the more acceptable heterosexual lifestyle, which may have significant social and health implications. (AU)