The Djungarian hamster displays photoperiodic variations in gonadal size synchronized to the seasons by the nightly secretion of the pineal hormone melatonin. In short photoperiod (SP), the gonads regress in size, and circulating sex steroids levels decline. Thus, the brain is subject to seasonal variations of both melatonin and sex steroids. Tanycytes are specialized glial cells located in the ependymal lining of the third ventricle. They send processes either to the meninges or to blood vessels of the medio-basal hypothalamus. Furthermore, they are known to locally modulate GnRH release in the median eminence and to display seasonal structural changes. Seasonal changes in tanycyte morphology might be mediated either through melatonin or s...
In this dissertation, I investigated proopiomelanocortin (POMC) systems in the hypothalamus, testes,...
The dorsomedial nucleus (DMN) of the hypothalamus, the only site within the mediobasal hypothalamus ...
To assess whether the mediobasal hypothalamus (MBH) is necessary for photoperiodic control of oestro...
Hamsters exposed for eight weeks to short photoperiod (LD 10:14) or treated with melatonin in the la...
Hamsters exposed for eight weeks to short photoperiod (LD 10:14) or treated with melatonin in the la...
The sexually dimorphic vasopressin system of the bed nucleus of the stria terminalis (BNST) is the m...
Siberian hamsters exhibit several seasonal rhythms in physiology and behaviour, including reproducti...
The duration of daytime light phase (photoperiod) controls reproduction in seasonal mammals. Syrian ...
This study investigated the roles of the melatonin signal and the circadian system in the induction ...
The development of refractoriness to the short-day melatonin rhythm in mid-winter triggers recrudesc...
Abstract Using quantitative autoradiography, 2-125I-melatonin binding was inves-tigated throughout t...
Removal of the pineal, or denervation of this gland by superior cervical ganglionectomy, blocks test...
The objective of this study is to investigate the impact of photoperiod on the temporal and spatial ...
Siberian hamsters maintained from birth in a short day length (DL), unlike their long-day counterpar...
Siberian hamsters maintained from birth in a short day length (DL), unlike their long-day counterpar...
In this dissertation, I investigated proopiomelanocortin (POMC) systems in the hypothalamus, testes,...
The dorsomedial nucleus (DMN) of the hypothalamus, the only site within the mediobasal hypothalamus ...
To assess whether the mediobasal hypothalamus (MBH) is necessary for photoperiodic control of oestro...
Hamsters exposed for eight weeks to short photoperiod (LD 10:14) or treated with melatonin in the la...
Hamsters exposed for eight weeks to short photoperiod (LD 10:14) or treated with melatonin in the la...
The sexually dimorphic vasopressin system of the bed nucleus of the stria terminalis (BNST) is the m...
Siberian hamsters exhibit several seasonal rhythms in physiology and behaviour, including reproducti...
The duration of daytime light phase (photoperiod) controls reproduction in seasonal mammals. Syrian ...
This study investigated the roles of the melatonin signal and the circadian system in the induction ...
The development of refractoriness to the short-day melatonin rhythm in mid-winter triggers recrudesc...
Abstract Using quantitative autoradiography, 2-125I-melatonin binding was inves-tigated throughout t...
Removal of the pineal, or denervation of this gland by superior cervical ganglionectomy, blocks test...
The objective of this study is to investigate the impact of photoperiod on the temporal and spatial ...
Siberian hamsters maintained from birth in a short day length (DL), unlike their long-day counterpar...
Siberian hamsters maintained from birth in a short day length (DL), unlike their long-day counterpar...
In this dissertation, I investigated proopiomelanocortin (POMC) systems in the hypothalamus, testes,...
The dorsomedial nucleus (DMN) of the hypothalamus, the only site within the mediobasal hypothalamus ...
To assess whether the mediobasal hypothalamus (MBH) is necessary for photoperiodic control of oestro...