Rats on 22.5‐Hr Light:Dark Cycles Have Vaginal Opening Earlier Than Rats on 26‐Hr Light:Dark Cycles

@article{Lehrer1986RatsO2,
  title={Rats on 22.5‐Hr Light:Dark Cycles Have Vaginal Opening Earlier Than Rats on 26‐Hr Light:Dark Cycles},
  author={S Lehrer},
  journal={Journal of Pineal Research},
  year={1986},
  volume={3}
}
  • S. Lehrer
  • Published 1 October 1986
  • Biology, Psychology
  • Journal of Pineal Research
Rats on 22.5‐hr light:dark cycles had vaginal opening significantly earlier than rats on 26‐hr light:dark cycles. This finding might explain the early menarche in blind girls: Their circadian rhythms, like those of rats on 22.5‐hr cycles, might be more rapid than normal. Thus a set number of cycles can occur in a shorter time than usual, allowing puberty to take place early. 
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References

SHOWING 1-10 OF 19 REFERENCES
Blind man living in normal society has circadian rhythms of 24.9 hours.
A psychologically normal blind man, living and working in normal society, suffered from a severe cyclic sleep-wake disorder. Investigations showed that he had circadian rhythms of body temperature,…
Puberty and resonance: a hypothesis.
  • S. Lehrer
  • Biology
    The Mount Sinai journal of medicine, New York
  • 1983
TLDR
The frequency of the arcuate nucleus does not have to slow as much to resonate with the same harmonic of the suprachiasmatic nucleus rhythm, and puberty can occur at an earlier age.
Neuroendocrine changes characteristic of sexual maturation.
TLDR
It is probable that stress and underweight act in blocking the pubertal development through the action of neurotransmitters, in particular catecholamines and beta-endorphins.
Neuroendocrine changes characteristic of sexual maturation.
TLDR
It is probable that stress and underweight act in blocking the pubertal development through the action of neurotransmitters, in particular catecholamines and beta-endorphins.
Blindness and menarche.
Blindness, biologic rhythms, and menarche.
Blindness, biologic rhythms, and menarche.
Pineal function relation to absolute darkness and sexual maturation.
  • R. Relkin
  • Chemistry, Medicine
    The American journal of physiology
  • 1967
The pineal gland and gonadal development in male rats and hamsters.
Hamsters through time's window: temporal structure of hamster locomotor rhythmicity.
TLDR
The temporal patterns of running-wheel locomotor activity of a group of 15 golden hamsters (Mesocricetus auratus) are described in detail and provide the basis for a hypothetical multioscillator framework underlying locomotory activity.
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