Androgenic regulation of expression of androgen receptor protein in the perineal motoneurons of aged male rats

2002 ◽  
Vol 443 (4) ◽  
pp. 383-387 ◽  
Author(s):  
Akira Matsumoto ◽  
Gail S. Prins
Keyword(s):  
Androgen Receptor ◽  
Male Rats ◽  
Receptor Protein ◽  
Regulation Of Expression ◽  
Androgen Receptor Protein ◽  
Androgenic Regulation

scholarly journals The Effect of Zinc, Selenium, and Their Combined Supplementation on Androgen Receptor Protein Expression in the Prostate Lobes and Serum Steroid Hormone Concentrations of Wistar Rats

Nutrients ◽  
2020 ◽  
Vol 12 (1) ◽  
pp. 153 ◽  
Author(s):  
Adam Daragó ◽  
Michał Klimczak ◽  
Joanna Stragierowicz ◽  
Olga Stasikowska-Kanicka ◽  
Anna Kilanowicz
Keyword(s):  
Androgen Receptor ◽  
Protein Expression ◽  
Wistar Rats ◽  
Steroid Hormone ◽  
Serum Testosterone ◽  
Male Rats ◽  
Receptor Protein ◽  
Androgen Receptor Protein ◽  
Combined Administration ◽  
Combined Supplementation

Background: Zinc (Zn) and selenium (Se) play a well-documented role in cancer prevention (e.g., for prostate cancer), and their combined supplementation is often given as a recommended prophylactic agent. The aim of the study was to determine the influence of Zn and/or Se supplementation on the androgen receptor (AR) in the prostate lobes and the serum selected hormone concentrations; a hitherto unresearched topic. Methods: Male rats (n = 84) were administered with Zn and/or Se intragastrically for up to 90 days. The effects of administration on the tested parameters were checked after 30 and 90 days of administration and additionally, 90 days after the end of 90 day administration. Results: Zn alone leads to an increase in serum testosterone concentrations, while the protein expression of AR in both parts of the prostate increases. Combined administration of Zn and Se eliminates the effect of Zn, which may suggest that these two elements act antagonistically. Se supplementation alone results in the same level of AR protein expression in administration and 90 days after administration periods. Conclusion: This paper presents the first report of the influence of Zn and/or Se supplementation on the protein expression of AR in the prostate. Our findings seem to indicate that simultaneous supplementation of both elements may be ineffective.

scholarly journals Immunoreactivity of androgen receptor protein in sexually dimorphic spinal motonucleus in neonatal male rats

1998 ◽  
Vol 39 (1) ◽  
pp. 13 ◽  
Author(s):  
Sang Won Han ◽  
Koon Ho Rha ◽  
Won Taik Lee ◽  
Sang Yul Mah ◽  
Hyung Ki Choi ◽  
...  
Keyword(s):  
Androgen Receptor ◽  
Male Rats ◽  
Receptor Protein ◽  
Sexually Dimorphic ◽  
Androgen Receptor Protein

Overload-induced androgen receptor expression in the aged rat hindlimb receiving nandrolone decanoate

2003 ◽  
Vol 94 (3) ◽  
pp. 1153-1161 ◽  
Author(s):  
Won Jun Lee ◽  
Joseph McClung ◽  
G. A. Hand ◽  
James A. Carson
Keyword(s):  
Androgen Receptor ◽  
Muscle Mass ◽  
Protein Concentration ◽  
Muscle Protein ◽  
Receptor Expression ◽  
Receptor Protein ◽  
Nandrolone Decanoate ◽  
Muscle Weight ◽  
Aged Rat ◽  
Androgen Receptor Protein

This study's purpose was to examine whether functional overload with nandrolone decanoate (ND) administration increased muscle mass and steroid receptor concentration in aged rat soleus (Sol) and plantaris (Plan) muscle. ND (6 mg/kg body wt) was administered once a week for 4 wk, whereas control rats received sesame seed oil injections. Functional overload of the hindlimb Sol and Plan was induced by synergistic gastrocnemius muscle ablation at the beginning of the fourth week. Adult (5 mo of age) and aged rats (25 mo of age) were randomly assigned to four groups: control, overload, control-ND, and overload-ND. Seven days of functional overload increased adult Sol muscle mass 27%, whereas the aged Sol muscle mass did not change. The aged overloaded Sol muscle receiving ND significantly increased muscle weight by 35% and total muscle protein by 24%. Aged Plan muscle did not increase muscle weight with overload or ND treatment. Androgen receptor protein was induced by ND treatment and functional Ov, and combining the two treatments induced Sol androgen receptor protein concentration above either alone. Sol glucocorticoid receptor protein concentration increased in overload groups of both ages. ND administration can increase aged Sol muscle mass and protein content after 7 days of functional overload, and the cooperative induction of androgen receptor may be important for this response.

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