TESTOSTERONE, DIHYDROTESTOSTERONE, TRENBOLONE ACETATE, AND ZERANOL ALTER THE SYNTHESIS OF CORTISOL IN BOVINE ADRENOCORTICAL-CELLS

被引:18
作者
ISAACSON, WK [1 ]
JONES, SJ [1 ]
KRUEGER, RJ [1 ]
机构
[1] UNIV NEBRASKA,DEPT ANIM SCI,LINCOLN,NE 68583
关键词
CORTISOL; TESTOSTERONE; DIHYDROSTESTOSTERONE; TRENBOLONE ACETATE; ZERANOL;
D O I
10.2527/1993.7171771x
中图分类号
S8 [畜牧、 动物医学、狩猎、蚕、蜂];
学科分类号
0905 ;
摘要
The objective of this study was to examine the effect of anabolic steroids (testosterone, T; dihydrotestosterone, D; trenbolone acetate, B; and zeranol, Z) on cortisol synthesis by cultured bovine adrenocortical cells. Adrenal glands were obtained from slaughter-aged steers (n = 4). Cortical cells were isolated and their steroidogenic capacity was examined. They were plated in multiwell culture plates. At confluence, cells were treated with T, D, B, or Z at 0, 10, 50, 125, or 500 ng/mL (eight wells per treatment). Twenty-four hours after treatment, one-half of each treatment concentration was stimulated with 10(-9) M ACTH. After 8 h of incubation, cortisol concentration in the media was measured using RIA. Cortical cells were removed from the plates using 1 mM EDTA and analyzed for DNA content. Data were subjected to rank transformation and analyzed by randomized complete block design. Adrenocorticotropic hormone stimulated (P < .01) the release of cortisol by more than threefold. Cortisol synthesis was lower (P < .05) in the presence of T, D, and B. Testosterone caused a greater (P < .05) suppression in cortisol production at 50 and 125 ng/mL than did D. The suppression of cortisol synthesis did not differ between B and T or between B and D. Cortisol synthesis was lowered (P < .05) by the presence of T, D, and B in both ACTH-stimulated and nonstimulated cells but was only suppressed in ACTH-stimulated cells of Z-treated cells. These data suggest that T, B, and D function to suppress the synthesis of cortisol in ACTH and nonstimulated cells, but that Z only reduces cortisol in ACTH-stimulated cells.
引用
收藏
页码:1771 / 1777
页数:7
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