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PubMed2004

[Omega-3 fatty acids, fish, fish oil and cardiovascular disease--a review with implications to Israeli nutritional guidelines].

Evidence from epidemiological and randomized controlled trials shows beneficial effects of omega-3 (n-3) fatty acids from fish and plant sources on cardiovascular disease (CVD), especially in patients with preexisting CVD. The optimal dose of n-3 is not yet determined, but prospective secondary prevention studies suggest that the addition of 0.5-1.8 grams/day of marine-derived eicosapentaenoic acid and docosahexaenoic acid, or plant derived alpha-linolenic acid at a dose of 1.5-3 grams/day significantly reduce subsequent cardiac events and mortality. These data have led the American Heart Association Dietary Guidelines committee to recommend to the general population the consumption of at least two servings of fatty fish per week, in addition to vegetable oils high in alpha-linolenic acid. The risk of adverse effects and toxicity from contaminants at this dose is low. The amount of daily n-3 fatty acids recommended for patients with coronary heart disease is 1 gram/day. In patients who cannot consume this dose of n-3 fatty acids through diet alone, addition of n-3 supplements should be considered. Higher doses of contaminant-free n-3 supplements, 2-4 grams/day, can be used in the treatment of hypertriglyceridemia. Data on the content of n-3 fatty acids and contaminants in Israeli bred fish is limited. Thus, caution should be exercised when applying these recommendations to the Israeli fish market.

Animals↗
PubMed2002

A literature based method for identifying gene-disease connections.

We present a statistical method that can swiftly identify, from the literature, sets of genes known to be associated with given diseases. It offers a comprehensive way to treat alias symbols, a statistical method for computing the relevance of the gene to the query, and a novel way to disambiguate gene symbols from other abbreviations. The method is illustrated by finding genes related to breast cancer.

Abstracting and Indexing↗
PubMed1992

Autoimmune mechanisms in thromboangiitis obliterans (Buerger's disease): the role of tobacco antigen and the major histocompatibility complex.

This study is a continuation of our previous work that showed that patients with thromboangiitis obliterans (TAO; Buerger's disease) demonstrate a cell-mediated immune response to human artery type-specific collagens. To investigate the role of cigarette smoking in patients with TAO, cellular and humoral sensitivity was tested to a tobacco glycoprotein (TGP) antigen in 13 patients with Buerger's disease, 16 healthy smokers, and 12 nonsmoking healthy young male subjects. In this study, patients with Buerger's disease and healthy smokers had the same rate of cellular response to TGP, whereas nonsmokers did not respond. All three groups had a 30% to 40% measurable antibody response to TGP. If TGP has an immunologic role in the pathogenesis of TAO, an additional factor (or factors) may be operative. A specific genetic makeup may be one such factor, although at this stage other pathogenic mechanisms cannot be ruled out. Eleven patients with Buerger's disease and two control groups of 10 young healthy smoking male subjects and 12 young nonsmokers underwent histocompatibility leukocyte antigen (HLA) typing. Patients with Buerger's disease had a statistically significantly higher frequency of HLA-DR4 and a significantly lower frequency of the HLA-DRW6 antigen than had both control groups. Because similar findings have been reported in other autoimmune diseases, this observation may serve as further evidence that an autoimmune mechanism is involved in Buerger's disease.

Antibody Formation↗
PubMed2005

Effects of surfactants originating from reuse of greywater on capillary rise in the soil.

Greywater is all domestic wastewater excluding toilet effluents. Detergents contain surfactants, which account for the highest concentration of organic chemicals in average domestic wastewater. Accumulation of surfactants in greywater-irrigated soils was determined in three household gardens. The effect of surfactants on capillary rise in loess and sand was then tested in the range of concentrations found in the garden soils. The capillary rise of freshwater in sieved oven-dried soil mixed with different concentrations of laundry detergent solution (10% w/w moisture content) was determined. In a second setup, the soil was mixed with freshwater and the rising solution contained different concentrations of detergent solution. The introduction of laundry solution to the soils caused a significant decrease in the capillary rise over the range of concentrations that is found in greywater-irrigated soils. The effect was more noticeable in the sand than in the loess. Interestingly, in the second setup, the capillary rise of the laundry solutions in the sand was almost similar to that of freshwater, whereas in the loess the capillary rise was significantly reduced. It is suggested that accumulation of surfactants in the soil might form water repellent soils that have a significant effect on agricultural productivity and environmental sustainability.

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