Sexual Maturation of the Cold-Exposed Male Rat: Alterations in Secondary Sexual Organ Sensitivity to Testosterone1

Sexual behavior in the male rat.

Prenatal undernutrition disrupted the sexual maturation, but not the sexual behavior, in male rats

Purpose Exposure to various stressors, including psychological, metabolic, and immune, in the perinatal period induces long-lasting effects in physiological function and increase the risk of metabolic disorders in later life. In the present study, sexual maturation and sexual behavior were assessed in prenatally undernourished mature male rats. Methods All the pregnant rats were divided into ...

Temporal relation between leptin and various indices of sexual maturation in the male rat.

Recent studies in humans and rhesus monkeys have suggested the possibility that the adipose tissue hormone leptin has a stimulatory and/or permissive effect on the onset of puberty in the male. We evaluated this hypothesis by measuring leptin in groups of male rats between the ages of 26 days and 96 days. A statistically significant positive correlation was present between serum leptin and age,...

P-79: The Study of Levofloxacin Antibiotic Effects on Male Sexual Hormone in Wistar Rat

Background: Levofloxacinis a fluoroquinolone antibacterial agent with a broad spectrum of activity against different infectious disease and Gram-negative bacteria. In more than 100 countries it has therapeutic use. This study is aimed to determine Cytotoxic of Levofloxacin effects on rat testis tissue. Materials and Methods: For this experimental study, we used 50 male wistar rats which must be...

Eversion and withdrawal of an intromittent organ before sexual maturation prepares male beetles for copulation

Some species of criocerine beetles have a hyper-elongated part of the intromittent organ called a flagellum. In resting position, the flagellum is stored in a specialized internal sac in the intromittent organ. This specialized state of the flagellum and internal sac is indispensable during copulation for flagellar insertion into the female spermathecal duct for sperm transfer. However, the mor...