Effects of Age and Season on Sexual Behavior and Plasma Testosterone and Dihydrotestosterone Concentrations of Laboratory-Housed Male Rhesus Monkeys (Macaca mulatta)
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This article is published in Biology of Reproduction.The article was published on 1975-09-01 and is currently open access. It has received 111 citations till now. The article focuses on the topics: Testosterone (patch) & Dihydrotestosterone.read more
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In utero and lactational exposure of male rats to 2,3,7,8-tetrachlorodibenzo-p-dioxin. 1. Effects on androgenic status.
TL;DR: When administered in overtly toxic doses to postpubescent rats, 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) produces a variety of adverse effects on the male reproductive system including a decrease in plasma androgen concentrations as mentioned in this paper.
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The relationship between circulating testosterone levels and male sexual behavior in rats
TL;DR: It was concluded that the absence of relationships between circulating T and sexual behavior in the normal rat population is due to the androgen requirement for this behavior being less than the amount normally present.
Current Practices and Controversies in Assisted Reproduction
TL;DR: It is necessary to select patients suitable for microsurgery and in-vitro fertilisation on the basis of prior history, once they have shown signs of tubal disease and the prognosis is poor for others.
Journal ArticleDOI
Changes in the pituitary-testicular system with age.
H. W. G. Baker,H. G. Burger,D. M. De Kretser,B. Hudson,S. O'connor,Christina Wang,A. Mirovics,J. Court,M. Dunlop,G. C. Rennie +9 more
TL;DR: The evidence is consistent with a primary decrease in testicular function over the age of 40 years, and the metabolic clearance rates (MCR) of testosterone and oestradiol also fell in old age, while the conversion of testosterone to ostradiol was increased.
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Daily spermatozoal production, epididymal spermatozoal reserves and transit time of spermatozoa through the epididymis of the rhesus monkey.
TL;DR: The results indicate that sperm matures within the epididymis of this species within 5 days, even though a 265-fold difference in epidodymal reserves was found.
References
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Testosterone secretion and metabolism in male senescence
TL;DR: It was observed that plasma testosterone levels and the apparent free plasma testosterone concentration remain within the same range from adolescence until the age of 50 yr, but that from the 6th decade on, the mean plasma levels decrease rather rapidly, with a wide range of individual values.
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Fluctuations in Plasma Testosterone Levels in Adult Male Rats and Mice
TL;DR: Large and irregular changes in plasma levels of T are unlike the fairly stable levels observed in the human but bear certain resemblance to the pulsatile release of T described in bulls and rams and perhaps also to the social dominance related differences in plasma T levels in Rhesus monkeys.
Journal Article
Gonadal hormones and behavior of normal and pseudohermaphroditic nonhuman female primates.
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The Source of Plasma Dihydrotestosterone in Man
TL;DR: It is suggested that dihydrotestosterone in the blood does not arise from direct secretion but may reflect events occurring in peripheral androgen target tissues.
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Effects of dihydrotestosterone on sexual behavior of castrated male rhesus monkeys.
TL;DR: DHTP effectively rendered the performance level of the castrates comparable to that of the intact controls, and was effective in pair tests with receptive females.