Zobrazeno 1 - 10
of 20
pro vyhledávání: '"S M, Yellon"'
Publikováno v:
Journal of the Society for Gynecologic Investigation. 10:323-338
Publikováno v:
Journal of neuroendocrinology. 14(4)
Short days induce multiple changes in reproductive and immune function in Siberian hamsters. Short-day reproductive inhibition in this species is regulated by an endogenous timing mechanism; after approximately 20 weeks in short days, neuroendocrine
Publikováno v:
Journal of pineal research. 31(1)
Pineal melatonin secretion has been reported to commonly decrease with aging, whereas intra-abdominal adiposity, plasma insulin and plasma leptin levels tend to increase. We recently demonstrated that daily melatonin administration starting at middle
Autor:
T H, Horton, S M, Yellon
Publikováno v:
Journal of biological rhythms. 16(3)
The present study tested the hypothesis that responsiveness to melatonin, the presence of the melatonin rhythm in circulation, and parameters of the GnRH neuron system are sustained across the aging continuum in Siberian hamsters. Afternoon melatonin
Publikováno v:
Biology of reproduction. 63(2)
The present study tested the hypothesis that acute treatment with 2, 3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) impairs fertility, disrupts the nocturnal melatonin rhythm, and suppresses lymphocyte function. Adult Siberian hamsters administered 2 or 10
Autor:
T, Wolden-Hanson, D R, Mitton, R L, McCants, S M, Yellon, C W, Wilkinson, A M, Matsumoto, D D, Rasmussen
Publikováno v:
Endocrinology. 141(2)
Pineal melatonin secretion declines with aging, whereas visceral fat, plasma insulin, and plasma leptin tend to increase. We have previously demonstrated that daily melatonin administration at middle age suppressed male rat intraabdominal visceral fa
Publikováno v:
Journal of pineal research. 28(1)
The seasonal effects of photoperiod on reproduction are mediated by melatonin, and it is hypothesized that increased immune function in short days is due to the increase in the duration of nightly melatonin secretion. Melatonin can act both directly
Publikováno v:
Biology of reproduction. 61(4)
This study tested the hypothesis that the uterus achieves maximum contractile capabilities before the onset of labor. Basal and agonist-stimulated contractions were assessed in uterine strips on Day 15 or 18 of pregnancy, the day of parturition, or 1
Publikováno v:
Biology of reproduction. 55(2)
Photoperiodic regulation of the melatonin rhythm was studied in juvenile Djungarian hamsters to test the hypothesis that magnetic field (MF) exposures disrupt sexual maturation. Juveniles in long or short days postweaning were exposed each day to a 1
Autor:
S M, Yellon
Publikováno v:
Biology of reproduction. 50(2)
The present study tested the hypothesis that photoperiodic control of reproductive function in the postpubertal Djungarian hamster is associated with changes in the number, morphology, or distribution of GnRH-immunoreactive cell bodies in the brain.