INTRODUCTION The n-3 and n-6 fatty acids compete for the same elongases and desaturases, still highly deficient synthesis of polyunsaturated fatty acids from n-3 linolenic acid. The n-3 polyunsaturated prevent disease and are important in the development and maintenance of neuronal activities, necessitating a proper relationship with their antagonists n-6. This paper studies the proportion of t...

The Center for Genetics, Nutrition and Health, 2001 S Street, NW, Suite 530, Washington DC 20009 USA Abstract: Today, Western diets are characterized by a higher omega-6 and a lower omega-3 fatty acid intake, whereas during the Paleolithic period when human’s genetic profile was established, there was a balance between omega-6 and omega-3 fatty acids. Their balance is an...

BACKGROUND The role of omega-3 (n-3) fatty acids (FAs) in the development of type 2 diabetes is uncertain, especially with regard to any differential influence of α-linolenic acid (ALA), eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA). OBJECTIVE The objective was to examine the association between total omega-3 FAs, marine omega-3 (EPA, DHA), nonmarine omega-3 (ALA), and omega-6 (...

High omega-6/omega-3 ratio intake promotes development of many chronic diseases. Secondary prevention studies though have demonstrated a decline in progression of many such diseases after reducing the intake, specific biochemical indices of cardiovascular disease risk markers have not been evaluated. We have evaluated the circulating levels of omega-6/omega-3 ratio and its effect on cardiovascu...

To investigate the possible regulating role of omega-6 and of omega-3 fatty acids on platelet adhesiveness, we randomised 60 volunteers into three groups to take 20 ml (equivalent to 0.3 g omega-6, 3.6 g omega-3; omega-6/omega-3 ratio 0.1) per day of a fish oil supplement, or to take 25 g (equivalent to 1.5 g omega-6, 0.5 g omega-3; omega-6/omega-3 ratio 3) per day of a soy lecithin supplement,...

Flaxseed oil is known as a functional oil because of the high content of α-linolenic acid; therefore, the aim of this research was to investigate some physicochemical properties of Iranian extra virgin flaxseed oil (EVFO) and the impact of the refining stages before deodorization on these properties. Fatty acid composition, peroxide and anisidine values, free fatty acids, Crystallization point,...

the effects of dietary inclusion of medicinal plants’ by-product mixture on performance, the relative internal organ weight, ileal microbial counts, and small intestinal and liver morphologic alterations in laying hens receiving different omega-6 to omega-3 ratios as a 2×3 factorial arrangements with three levels of plants’ by-product (zero, 2.5 and five percent) and two omega-6 to omega-3 rati...

The selective pressure at the protein level is usually measured by the nonsynonymous/synonymous rate ratio (omega = dN/dS), with omega < 1, omega = 1, and omega > 1 indicating purifying (or negative) selection, neutral evolution, and diversifying (or positive) selection, respectively. The omega ratio is commonly calculated as an average over sites. As every functional protein has some amino aci...

BACKGROUND Polyunsaturated fatty acids of the omega-6 (omega-6) class, as found in corn and safflower oils, can act as precursors for intermediates involved in the growth of mammary tumors when fed to animals, whereas polyunsaturated fatty acids of the omega-3 (omega-3) class, as found in fish oil, can inhibit these effects. The effects of dietary intervention on the ratios of these fatty acids...