Journal
INTERNATIONAL JOURNAL OF NEUROSCIENCE
Volume 101, Issue 1-4, Pages 73-87Publisher
TAYLOR & FRANCIS LTD
DOI: 10.3109/00207450008986494
Keywords
stress; learning; linoleic acid; alpha-linolenic acid; cortisol; cholesterol
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A mixture of linoleic and alpha-linolenic acids (free non-esterified unsaturated fatty acids) administered for 3 weeks prior to injection of cortisol (10 mg/kg), or prior to immersion of rats in a 10 degrees C saline bath, prevented elevation of blood levels of cortisol and cholesterol and deficits in Morris water maze spatial learning that usually accompany such stressful conditions. Differences from controls on all behavioural and biochemical measures were statistically significant (P < .05). It is proposed that induction of intense stress, and the associated increase in cortisol, cholesterol and other corticosteroids may damage hippocampal structures and help account for the cognitive decline witnessed in Alzheimer's disease and other age-related conditions. The modulation of these consequences by the fatty acid mixture may provide an alternative strategy for the study of stress markers and for the development of other intervention options in humans.
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