نتایج جستجو برای: linolenic acid
تعداد نتایج: 747625 فیلتر نتایج به سال:
The transfer of fatty acids across biological membranes is a largely uncharacterized process, although it is essential at membranes of several higher plant organelles like chloroplasts, peroxisomes, or the endoplasmic reticulum. Here, we analyzed loss-of-function mutants of the unicellular cyanobacterium Synechocystis sp. PCC 6803 as a model system to circumvent redundancy problems encountered ...
In the time period of 1994-1998, a case-control study on diet and prostate cancer was carried out in Uruguay to examine the risk associated with fat intake. Two hundred and seventeen (217) incident cases afflicted with advanced prostate cancer were frequency-matched with 431 controls on age, residence, and urban/rural status. The analysis was carried out using unconditional multiple logistic re...
BACKGROUND Dietary intake of linolenic acid is associated with a lower risk of cardiovascular disease mortality. However, it is unknown whether linolenic acid is associated with a lower risk of carotid atherosclerosis. OBJECTIVE The objective was to examine the association between dietary linolenic acid and the presence of atherosclerotic plaques and the intima-media thickness of the carotid ...
The effect of linolenic acid on photosynthetic electron transport reactions in chloroplasts has been localized at a site on the donor side of photosystem I and at two functionally distinct sites in photosystem II.In photosystem I, an increase in the electron transport rate occurs in the presence of 10 to 100 micromolar linolenic acid, followed by a decline in rate from 100 to 200 micromolar lin...
Oomen et al (1) reported on the lack of association between -linolenic acid (ALA, 18:3n 3) consumption and the incidence of coronary artery disease in a 10-y follow-up. We believe that 2 major limitations of this study might have affected its outcome and led to the wrong conclusions. First, this study did not control for plasma concentrations of -linolenic acid; it is thus difficult to establis...
Fig. 1. Pathway of biosynthesis and metabolism of polyunsaturated fatty acids. All mam synthesis is palmitic acid (16: 0) which can be elongated to stearic acid (18:0). Stearic a present in cells of both plants and animals. Mammalian cells lack D-12 desaturase and desaturase, the enzyme responsible for the synthesis ofa-linolenic acid (ALA; 18:3 n-3) o on their diet. Once consumed, these EFA ca...
BACKGROUND Epidemiologic data suggest that diet is a risk factor in the etiology of gastric cancer. However, the role of dietary fatty acids, a modifiable risk factor, remains relatively unexplored. OBJECTIVE The objective of this study was to determine the association of plasma phospholipid fatty acid concentrations, as biomarkers of exogenous and endogenously derived fatty acids, with the r...
BACKGROUND Omega-3 fatty acid intake during pregnancy has been confirmed to affect newborn birth outcomes in the developed world. However, the association between maternal omega-3 fatty acid intake and birth size is unknown in developing countries. OBJECTIVE To examine the association of maternal omega-3 fatty acid intake with newborn birth size. METHODS AND STUDY DESIGN A cross-sectional s...
Introduction Gamma-linolenic acid (GLA) is an important conditionally essential fatty acid (EFA). GLA is an omega-6 polyunsaturated fatty acid (PUFA). The fatty acid molecule is comprised of 18 carbon atoms with three double bonds. It is also known as 18:3n-6; 6,9,12-octadecatrienoic acid; cis-6, cis-9, cis-12octadecatrienoic acid; and gamolenic acid. GLA is found naturally in the fatty acid fr...
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