Effect of Hypo and Hyperprolactinemia on the Testicular Maturation of Wistar Rats During Puberal Transition

Abstract

In Wistar rats, the structural and metabolic organization of the testis was influenced by the blood concentration of prolactin. The androgen dependent enzyme activities in plasma as well as in testis were higher under hyperprolactinemia and lower under hypoprolactinemia, as induced by bromocriptine. While prolactin had direct effect on the testicular functions, bromocriptine seemed to exert its influence through blocking hypophysial prolactin.

Effects of heat stress and fescue toxicosis on the immune system and other physiological parameters

“…Binding of ergopeptine alkaloids to dopaminergic receptors (Thompson and Stuedemann, 1993;Oliver, 2005) leads to a decrease in serum prolactin level. Decreased prolactin level could lead to reduced milk production, a dull and shaggy hair coat, reproductive failure, and immunosuppresion (Reber, 1993;Regisford and Katz, 1993;Prasad et al, 1989;Aiken et al, 2006).…”