Search Results - "Klosen, P"

The hormone melatonin: Animal studies by Pevet, P., Klosen, P., Felder-Schmittbuhl, M.P.

“…The Melatonin (MLT), secreted rhythmically by the pineal, is an efferent hormonal signal of the circadian clock. MLT presents overall pleitropic effects but it…”
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Differential response patterns of kisspeptin and RFamide‐related peptide to photoperiod and sex steroid feedback in the Djungarian hamster (Phodopus sungorus) by Rasri‐Klosen, K., Simonneaux, V., Klosen, P.

“…Many animals synchronise their reproductive activity with the seasons to optimise the survival of their offspring. This synchronisation involves switching on…”
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Distribution and Seasonal Variation in Hypothalamic RF-amide Peptides in a Semi-Desert Rodent, the Jerboa by Janati, A., Talbi, R., Klosen, P., Mikkelsen, J. D., Magoul, R., Simonneaux, V., EL Ouezzani, S.

“…The jerboa is a semi‐desert rodent, in which reproductive activity depends on the seasons, being sexually active in the spring–summer. The present study aimed…”
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Differential Regulation of Kiss1 Expression by Melatonin and Gonadal Hormones in Male and Female Syrian Hamsters by Ansel, L, Bolborea, M, Bentsen, A.H, Klosen, P, Mikkelsen, J.D, Simonneaux, V

“…In seasonal breeders, reproduction is synchronized to seasons by day length via the pineal hormone melatonin. Recently, we have demonstrated that Kiss1, a key…”
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Photoperiodic co-regulation of kisseptin, neurokinin B and dynorphin in the hypothalamus of a seasonal rodent by Bartzen-Sprauer, J, Klosen, P, Ciofi, P, Mikkelsen, J D, Simonneaux, V

“…In many species, sexual activity varies on a seasonal basis. Kisspeptin (Kp), a hypothalamic neuropeptide acting as a strong activator of…”
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Peripheral kisspeptin reverses short photoperiod-induced gonadal regression in Syrian hamsters by promoting GNRH release by Ansel, L, Bentsen, A H, Ancel, C, Bolborea, M, Klosen, P, Mikkelsen, J D, Simonneaux, V

“…In seasonal breeders, reproduction is synchronised by day length via the pineal hormone melatonin. In short winter days (short day, SD), the Syrian hamster…”
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The bed nucleus of the stria terminalis in the Syrian hamster ( Mesocricetus auratus ): absence of vasopressin expression in standard and wild-derived hamsters and galanin regulation by seasonal changes in circulating sex steroids by Bolborea, M, Ansel, L, Weinert, D, Steinlechner, S, Pévet, P, Klosen, P

“…Abstract The bed nucleus of the stria terminalis (BNST) is a nucleus of the forebrain highly sensitive to sex steroids and containing vasopressin neurons…”
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MT1 Melatonin Receptor mRNA Expressing Cells in the Pars Tuberalis of the European Hamster: Effect of Photoperiod by Dardente, H., Klosen, P., Pévet, P., Masson-Pévet, M.

“…Melatonin, secreted only during the night by the pineal gland, transduces the photoperiodic message to the organism. One important target for the hormone is…”
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Photoperiodic Co-Regulation of Kisspeptin, Neurokinin B and Dynorphin in the Hypothalamus of a Seasonal Rodent by Bartzen-Sprauer, J., Klosen, P., Ciofi, P., Mikkelsen, J. D., Simonneaux, V.

“…In many species, sexual activity varies on a seasonal basis. Kisspeptin (Kp), a hypothalamic neuropeptide acting as a strong activator of…”
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Testosterone-driven seasonal regulation of vasopressin and galanin in the bed nucleus of the stria terminalis of the Djungarian hamster ( Phodopus sungorus ) by Rasri, K, Mason, P, Govitrapong, P, Pevet, P, Klosen, P

“…Abstract The sexually dimorphic vasopressin system of the bed nucleus of the stria terminalis (BNST) is the most sensitive neurotransmitter system regulated by…”
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Daytime Gating in the Syrian Hamster Pineal Gland by Salingre, A., Klosen, P., Pévet, P., Simonneaux, V.

“…Melatonin synthesis in rodents is tightly regulated at the transcriptional level by stimulatory and inhibitory transcription factors. Among them,…”
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Regulation of MT1 Melatonin Receptor Expression in the Foetal Rat Pituitary by Johnston, J. D., Klosen, P., Barrett, P., Hazlerigg, D. G.

“…During development, melatonin receptors are transiently expressed in multiple neuroendocrine tissues, suggesting a novel role for melatonin in developmental…”
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In vivo expression of the intermediate filament peripherin in rat motoneurons: modulation by inhibitory and stimulatory signals by Terao, E, Janssens, S, van den Bosch de Aguilar, Ph, Portier, M.-M, Klosen, P

“…Peripherin is a type III intermediate filament which, in contrast to the neurofilaments, is strongly up-regulated after nerve injury. Although peripherin…”
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Immunohistochemical evidence for the presence of tryptophan hydroxylase and serotonin in the rodent Harderian gland by Djeridane, Y, Klosen, P, Vivien-Roels, B, Simonneaux, V, Pévet, P

“…The Harderian gland is considered as being an extrapineal source of melatonin. In most rodents, the Harderian gland contains two epithelial cell types (I and…”
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PEG embedding for immunocytochemistry: application to the analysis of immunoreactivity loss during histological processing [see comments] by Klosen, P, Maessen, X, van den Bosch de Aguilar, P

“…We have developed a protocol for the production and longterm storage of polyethylene glycol (PEG) sections for immunocytochemistry. Sections obtained by this…”
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Effets de la perturbation du rythme circadien sur le contrôle hypothalamique de la reproduction chez la souris femelle by Simonneaux, M., Kretz, M., Bahougne, T., Klosen, P., Jeandidier, N., Simonneaux, V.

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Spontaneous perikaryal neurofilament phosphorylation in the septofimbrial nucleus of the rat by Klosen, P, van den Bosch de Aguilar, P

“…Phosphorylation of the 200 kDa neurofilament peptide NF-H usually only occurs in axons. We describe the spontaneous presence of phosphorylated NF-H in a…”
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Perikaryal neurofilament phosphorylation in axotomized and 6-OH-dopamine-lesioned CNS neurons by Klosen, P, Anderton, B H, Brion, J P, van den Bosch de Aguilar, P

“…The axon reaction in the central nervous system was studied using a monoclonal antibody to phosphorylated neurofilaments. Axotomy was performed by cutting the…”
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The mt1 Melatonin Receptor and RORβ Receptor Are Co-localized in Specific TSH-immunoreactive Cells in the Pars Tuberalis of the Rat Pituitary by Klosen, Paul, Bienvenu, Christele, Demarteau, Olivier, Dardente, Hugues, Guerrero, Hilda, Pévet, Paul, Masson-Pévet, Mireille

“…The pars tuberalis (PT) of the pituitary represents an important target site for the time-pacing pineal hormone melatonin because it expresses a large number…”
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Per and neuropeptide expression in the rat suprachiasmatic nuclei: compartmentalization and differential cellular induction by light by Dardente, Hugues, Poirel, Vincent-Joseph, Klosen, Paul, Pévet, Paul, Masson-Pévet, Mireille

“…Per1 and Per2, two clock genes rhythmically expressed in the suprachiasmatic nucleus (SCN), are implicated in the molecular mechanism of the circadian…”
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