Changes in adipose mass and cellularity through the adult life of rats fed ad libitum or a life-prolonging restricted diet. 1980

H A Bertrand, and F T Lynd, and E J Masoro, and B P Yu

Male Fischer 344 rats were either fed ad libitum (Group A) or 60% of the ad libitum intake (Group R) starting at 6 weeks of age; the latter is a life prolonging food restriction. Total adipose mass increased with increasing age in both Group A and Group R rats until about 70% of the life span after which it declined. The results indicate that the lower adipose mass of the Group R rats is probably not related to life prolongation. Adipocyte hypertrophy is involved in growth of the epididymal and perirenal depots in adult Group R rats and is the sole basis of epididymal depot growth in adult Group A rats. Increasing adipocyte number is the sole basis of perirenal depot growth in adult Group A rats and is involved in the growth of both depots in adult Group R rats. Decreasing adipose mass during senescence involves decreasing mean adipocyte volume but not a decrease in the adipocyte number.

UI MeSH Term Description Entries
D008136 Longevity The normal length of time of an organism's life. Length of Life,Life Span,Lifespan,Life Spans,Lifespans
D008297 Male Males
D001835 Body Weight The mass or quantity of heaviness of an individual. It is expressed by units of pounds or kilograms. Body Weights,Weight, Body,Weights, Body
D004032 Diet Regular course of eating and drinking adopted by a person or animal. Diets
D000273 Adipose Tissue Specialized connective tissue composed of fat cells (ADIPOCYTES). It is the site of stored FATS, usually in the form of TRIGLYCERIDES. In mammals, there are two types of adipose tissue, the WHITE FAT and the BROWN FAT. Their relative distributions vary in different species with most adipose tissue being white. Fatty Tissue,Body Fat,Fat Pad,Fat Pads,Pad, Fat,Pads, Fat,Tissue, Adipose,Tissue, Fatty
D000367 Age Factors Age as a constituent element or influence contributing to the production of a result. It may be applicable to the cause or the effect of a circumstance. It is used with human or animal concepts but should be differentiated from AGING, a physiological process, and TIME FACTORS which refers only to the passage of time. Age Reporting,Age Factor,Factor, Age,Factors, Age
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D051381 Rats The common name for the genus Rattus. Rattus,Rats, Laboratory,Rats, Norway,Rattus norvegicus,Laboratory Rat,Laboratory Rats,Norway Rat,Norway Rats,Rat,Rat, Laboratory,Rat, Norway,norvegicus, Rattus

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