Exogenous hypercortisolism and epididymal fat cell count in young rats

Area of Science:

• Endocrinology
• Physiology
• Animal Science

Background:

• Exogenous hypercortisolism can result from prolonged exposure to glucocorticoids.
• Understanding its effects on body composition is crucial for metabolic research.

Purpose of the Study:

• To investigate the impact of two different grades of exogenous hypercortisolism on body weight and epididymal fat pad characteristics in young rats.

Main Methods:

• Young rats were administered cortisol orally (4-5 mg/kg/day) or cortisone acetate subcutaneously (2.5 mg/100 g) for two weeks.
• Body weight, epididymal fat pad weight, and fat cell number were measured and compared to control groups.

Main Results:

• Cortisol treatment reduced body weight gain but did not affect epididymal fat pad weight or cell count.
• Cortisone acetate partially inhibited weight gain in younger rats and decreased it in older rats, without altering epididymal fat pad parameters.

Conclusions:

• Exogenous hypercortisolism differentially impacts body weight gain depending on the glucocorticoid and rat age.
• Epididymal fat pad weight and cellularity appear resistant to short-term exogenous hypercortisolism in growing rats.