Effects of very small doses of urine on acceleration and delay of sexual maturation in female house mice.

Long-term effects of accelerated or delayed sexual maturation on reproductive output in wild female house mice (Mus musculus).

The effects of acceleration and delay of puberty in female house mice on survival and reproduction were tested using 6 experimental groups: (1) control females mated at the time of first oestrus, (2) females mated at weaning, (3) females treated with male urine starting at weaning and mated at first oestrus, (4) females housed in groups and mated at first oestrus, (5) females housed alone, trea...

Acceleration and delay of sexual maturation in female house mice previously selected for early and late first vaginal oestrus.

Female mice previously selected for early and late sexual maturation were tested to determine whether they retained flexibility in age of puberty in response to pheromonal and social cues. First vaginal oestrus in fst-maturing females could be delayed but not accelerated by social cues. Conversely, puberty in slow-maturing females could be accelerated in their sexual development, but not delaye...

Effect of human chorionic gonadotropin on sexual maturation, sex steroids and thyroid hormone levels in Caspian lamprey (Caspiomyzon wagneri Kessler, 1870).

The objective of this study was to determine the effect of human chorionic gonadotropin (hCG) on sexual maturation, plasma sex steroids (17β-estradiol, E2 and 17α-hydroxy progesterone (17α OHP)) and thyroid hormones (triiodothyronine, T3 and thyroxin, T4) levels in upstream - migrating Caspian lamprey. During the experiment, 36 fish (24 females and 12 males) in  spring 2013 and 36 fish (24 fema...

Effects of capsaicin in low doses and high doses on the small intestine motor response in wild-type and TRPV1 knockout mice

The effects of Formononetin Derived from Red Clover During Pregnancy on Puberty, Some Reproductive Parameters and Lordosis Behavior of Female Mice

Abstract   Background & aim: Formostontin is a non-steroidal phytostrogenic polyphenolic plant with estrogen-like properties found in some plants, including red clover. The aim of the present study was to determine the effects of formostontin during pregnancy on the onset of puberty, estrus cycle, genital weights and their children's lordosis behavior.   Methods: In the present experimental stu...