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Titolo:
The effects of high fat diets and environmental influences on cognitive performance in rats
Autore:
Winocur, G; Greenwood, CE;
Indirizzi:
Baycrest Ctr Geriatr Care, Rotman Res Inst, N York, ON M6A 2E1, Canada Baycrest Ctr Geriatr Care N York ON Canada M6A 2E1 rk, ON M6A 2E1, Canada Trent Univ, Dept Psychol, Peterborough, ON K9J 7B8, Canada Trent Univ Peterborough ON Canada K9J 7B8 eterborough, ON K9J 7B8, Canada Trent Univ, Dept Psychiat, Peterborough, ON K9J 7B8, Canada Trent Univ Peterborough ON Canada K9J 7B8 eterborough, ON K9J 7B8, Canada Univ Toronto, Dept Psychiat, Toronto, ON, Canada Univ Toronto Toronto ON Canada ronto, Dept Psychiat, Toronto, ON, Canada Univ Toronto, Dept Psychol, Toronto, ON, Canada Univ Toronto Toronto ON Canada oronto, Dept Psychol, Toronto, ON, Canada Univ Toronto, Fac Med, Dept Nutr Sci, Toronto, ON, Canada Univ Toronto Toronto ON Canada c Med, Dept Nutr Sci, Toronto, ON, Canada Baycrest Ctr Geriatr Care, Dept Nutr & Food Sci, Toronto, ON, Canada Baycrest Ctr Geriatr Care Toronto ON Canada ood Sci, Toronto, ON, Canada Baycrestdatr Geriatr Care, Kunin Lunenfeld Appl Res Unit, Toronto, ON, Cana Baycrest Ctr Geriatr Care Toronto ON Canada Res Unit, Toronto, ON, Cana
Titolo Testata:
BEHAVIOURAL BRAIN RESEARCH
fascicolo: 2, volume: 101, anno: 1999,
pagine: 153 - 161
SICI:
0166-4328(199906)101:2<153:TEOHFD>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
PRENATAL PROTEIN-MALNUTRITION; 4 AGE-GROUPS; NERVOUS-SYSTEM; BRAIN; MEMORY; ACIDS; HIPPOCAMPUS; ENRICHMENT; IMPAIRMENT; EXPERIENCE;
Keywords:
learning; memory; dietary fat; environment; saturated fatty acids;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
41
Recensione:
Indirizzi per estratti:
Indirizzo: Winocur, G BaycrestACtr Geriatr Care, Rotman Res Inst, 3560 Bathurst St, NYork, ON M6 Baycrest Ctr Geriatr Care 3560 Bathurst St N York ON Canada M6A 2E1
Citazione:
G. Winocur e C.E. Greenwood, "The effects of high fat diets and environmental influences on cognitive performance in rats", BEH BRA RES, 101(2), 1999, pp. 153-161

Abstract

As part of a continuing investigation of the relationship between dietary factors and cognitive function, the present study examined the combined effects of environmental influences and high-fat diets on learning and memory. Following 3 months of dietary (20% by weight fat diets, composed primarilyof either beef tallow or soybean oil versus standard laboratory chow) and environmental treatments (standard, enriched or impoverished), subjects were tested on a variable interval delayed alternation (VIDA) task which measures learning and memory functions that differentially involve specific brain regions. The results confirmed the negative effects of high fat diets, relative to chow, on all aspects of VIDA performance and showed that environmental enrichment overcame deficits associated with dietary fat. Housing rats fed high-fat diets in an impoverished environment did not further exacerbate cognitive deficits observed in such rats living under standard conditions. By comparison, chow-fed rats exhibited no benefit associated with the enriched environment on any aspect of task performance, and only a transitory learning impairment when housed in an impoverished environment. The results show that high fat diets and environmental conditions influence cognitive function and that these two factors interact with one another to produce different profiles of benefits and impairments. (C) 1999 Elsevier Science B. V. All rights reserved.

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Documento generato il 15/07/20 alle ore 14:24:43