Effect of Mediterranean and Occidental diets, and red wine, on plasma fatty acids in humans. An intervention study.

The type of diet consumed by individuals has been associated with the development of some chronic diseases, including cardiovascular disease (CVD), cancer, diabetes, and others. Populations that consume diets rich in fruits and vegetables and drink wine in moderation, as the Mediterranean, have a higher life expectancy and less chronic diseases than other occidental populations. We carried out an intervention study in humans to evaluate the effect of a Mediterranean diet (MD), an Occidental diet (OD) and their supplementation with red wine, on biochemical, physiological and clinical parameters related to atherosclerosis and other chronic diseases. For 3 months, two groups of 21 male volunteers each, received either a MD or an OD; during the second month, red wine was added isocalorically, 240 ml/day. At days 0, 30, 60 and 90, clinical, physiological and biochemical evaluations were made. In this article we report on the results obtained in plasma fatty acids profile that includes saturated fatty acids (SFA), monounsaturated fatty acids (MUFA), polyunsaturated fatty acids (PUFA), omega-6 fatty acids, omega-3 fatty acids and omega-6/omega-3 ratio. Other results have been published previously. Plasma fatty acid percentages in the OD group, compared to the MD group, did not show differences in SFA, but the OD group showed lower levels of MUFA and omega-3 fatty acids, and higher levels of PUFA and omega-6 fatty acids, with a higher omega-6/omega-3 ratio than the MD group. Wine supplementation reduced MUFA and increased PUFA in both dietary groups, suggesting that wine could improve a diet with a good omega-6/omega-3 ratio. Volunteers on MD showed a better fatty acid profile than those on OD, suggesting a lower cardiovascular risk. Moderate consumption of wine improves this profile in the MD group.

Effect of mediterranean and occidental diets, and red wine, on plasma fatty acids in humans: an intervention study

The type of diet consumed by individuals has been associated with the development of some chronic diseases, including cardiovascular disease (CVD), cancer, diabetes, and others. Populations that consume diets rich in fruits and vegetables and drink wine in moderation, as the Mediterranean, have a higher life expectancy and less chronic diseases than other occidental populations. We carried out an intervention study in humans to evaluate the effect of a Mediterranean diet (MD), an Occidental diet (OD) and their supplementation with red wine, on biochemical, physiological and clinical parameters related to atherosclerosis and other chronic diseases. For 3 months, two groups of 21 male volunteers each, received either a MD or an OD; during the second month, red wine was added isocalorically, 240 ml/day. At days 0, 30, 60 and 90, clinical, physiological and biochemical evaluations were made. In this article we report on the results obtained in plasma fatty acids profile that includes saturated fatty acids (SFA), monounsaturated fatty acids (MUFA), polyunsaturated fatty acids (PUFA), ómega-6 fatty acids, ómega-3 fatty acids and ómega-6/ómega-3 ratio. Other results have been published previously. Plasma fatty acid percentages in the OD group, compared to the MD group, did not show differences in SFA, but the OD group showed lower levels of MUFA and ómega-3 fatty acids, and higher levels of PUFA and ómega-6 fatty acids, with a higher ómega-6/ómega-3 ratio than the MD group. Wine supplementation reduced MUFA and increased PUFA in both dietary groups, suggesting that wine could improve a diet with a good ómega-6/ómega-3 ratio. Volunteers on MD showed a better fatty acid profile than those on OD, suggesting a lower cardiovascular risk. Moderate consumption of wine improves this profile in the MD group.

Detección de anticuerpos a proteínas de membrana externa de Salmonella typhi en pacientes con fiebre tifoidea e individuos sanos / Antibody detection to extern membrane proteins of Salmonella typhi in patients with typhoid fever and healthy people

En este estudio hemos usado la electroinmunotransferencia (Western blot) para examinar la respuesta de anticuerpos IgG, IgA e IgM a proteínas de membrana externa (PME) de Salmonella typhi Ty-2 y S. thyphi nativa (9, 12, d, Vi) en sueros de 16 pacientes con fiebre tifoidea (fase aguda y convaleciente), 18 pacientes con cuadros febriles no tifoidea (infecciones a Escherichia coli, proteus vulgaris, Salmonella paratyphi A y virales) y 30 individuos sanos. El patrón electroforético de las proteínas de membrana externa de ambas salmonellas fue similar por geles SDS-poliacrilamida y la contaminación de lipopolisacárodo (LPS) fue del 4,5%. Los sueros de pacientes con fiebre tifoidea mostraron por "immunoblotting" respuesta IgG contra la mayoría de las proteínas de membrana externa de ambas salmonellas, siendo de mayor amplitud e intensidad en fase convaleciente. Los tres grupos de sueros dieron respuesta IgG contra proteínas de 34, 35, 39, 55, y 69 KD. La respuesta IgA e IgM antiproteínas de membrana externa de salmonella fue restringida y con diferencia con respecto a la cepa bacteriana. Sólo los sueros de pacientes con fiebre tifoidea mostraron IgA antiproteínas de membrana externa de S. typhi Ty-2 en bandas de 24 y 60 KD e IgM antiPME de S. typhi Ty-2 en 60 KD. Los tres grupos dieron respuesta IgA e IgM antiPME en la región 34 a 39 KD. Estos datos indican que los sueros de pacientes y de individuos normales poseen anticuerpos IgG, IgA e IgM antiPME que reconocen estructuras que son ubiquitarias. Este estudio concluye que la electroinmunotransferencia puede utilizarse en la identificación de infecciones por Salmonella typhi, ya que la presencia de anticuerpos IgA anti PME de S. typhi Ty-2 detectadas por "immunoblotting" en las badas 24 y 60 KD e IgM antiPME de S. tyyphi Ty-2 en 60 KD permitirá confirmar el diagnóstico de fiebre tifoidea