Multimodal Influence of Estrogen upon Gonadotropin-Releasing Hormone Neurons | Endocrine
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Many mammalian species from temperate latitudes exhibit seasonal variations in breed-ing
activity which are controlled by the annual photoperiodic cycle. Photoperiodic information is …

Parkinson's disease (PD) is a common chronic progressive neurodegenerative disorder in
elderly people. A consistent neurochemical abnormality in PD is degeneration of …

Annual variations in day length are responsible for seasonal changes in reproductive activity
in sheep. However, in constant photoperiodic conditions, ewes express an endogenous …

Abstract The role of 27-hydroxycholesterol (27-OHC) in autoimmune diseases has become
a subject of intense research in recent years. This oxysterol, derived from cholesterol, has …

The beneficial effects of nutrition on reproduction in sheep have been described, particularly
on ovulation rate. However, the relationships between nutrition and reproductive seasonality …

Con el propósito de discutir y analizar la información disponible, referente al
comportamiento reproductivo estacional de los ovinos en la República Mexicana, se realizó …

The neural components underlying the influence of photoperiod upon reproductive
functioning are poorly understood. In this study, we have used immunocytochemistry to …

Seasonal reproduction is a common adaptive strategy among mammals that allows for
breeding to occur at times of the year when it is most advantageous for the subsequent …

Offspring of Sprague–Dawley derived dams were exposed to either 2, 4, 2′, 4′-
tetrachlorobiphenyl (TCB)(1, 10, or 20 mg/(kg· day)) or 3, 4, 3′, 4′-TCB (0.1 or 1 mg/(kg …