Search Results - "Dufourny, Laurence"

The Two Populations of Kisspeptin Neurons Are Involved in the Ram-Induced LH Pulsatile Secretion and LH Surge in Anestrous Ewes by Fabre-Nys, Claude, Cognié, Juliette, Dufourny, Laurence, Ghenim, Meriem, Martinet, Stephanie, Lasserre, Olivier, Lomet, Didier, Millar, Robert P, Ohkura, Satoshi, Suetomi, Yuta

“…Exposure to a ram during spring stimulates luteinizing hormone (LH) secretion and can induce ovulation in sexually quiescent ewes (“ram effect”). Kisspeptin…”
Get full text

GPR50 is the mammalian ortholog of Mel1c: evidence of rapid evolution in mammals by Dufourny, Laurence, Levasseur, Anthony, Migaud, Martine, Callebaut, Isabelle, Pontarotti, Pierre, Malpaux, Benoit, Monget, Philippe

“…The melatonin receptor subfamily contains three members Mel1a, Mel1b and Mel1c, found in all vertebrates except for Mel1c which is found only in fish, Xenopus…”
Get full text

Acute Injection and Chronic Perfusion of Kisspeptin Elicit Gonadotropins Release but Fail to Trigger Ovulation in the Mare1 by Decourt, Caroline, Caraty, Alain, Briant, Christine, Guillaume, Daniel, Lomet, Didier, Chesneau, Didier, Lardic, Lionel, Duchamp, Guy, Reigner, Fabrice, Monget, Philippe, Dufourny, Laurence, Beltramo, Massimiliano, Dardente, Hugues

“…Kisspeptin has emerged as the most potent gonadotropin-releasing hormone (GnRH) secretagogue and appears to represent the penultimate step in the central…”
Get full text

Correction: GPR50 is the mammalian ortholog of Mel1c: Evidence of rapid evolution in mammals by Dufourny, Laurence, Levasseur, Anthony, Migaud, Martine, Callebaut, Isabelle, Pontarotti, Pierre, Malpaux, Benoit, Monget, Philippe

“…Doc number: 28…”
Get full text

Crosstalks between kisspeptin neurons and somatostatin neurons are not photoperiod dependent in the ewe hypothalamus by Dufourny, Laurence, Lomet, Didier

“…•Two hypothalamic areas contain both somatostatin (SOM) and kisspeptin (KP) neurons.•Preoptic area (POA) and arcuate nucleus (ARC) show SOM contacts on KP…”
Get full text

Influence of Estradiol on NADPH Diaphorase/Neuronal Nitric Oxide Synthase Activity and Colocalization with Progesterone or Type II Glucocorticoid Receptors in Ovine Hypothalamus by DUFOURNY, Laurence, SKINNER, Donal C

“…Nitric oxide (NO) has been shown to play an important role in both the neuroendocrine reproductive and stress axes, which are closely linked. Because…”
Get full text

Interactions between β‐endorphin and kisspeptin neurons of the ewe arcuate nucleus are modulated by photoperiod by Hellier, Vincent, Dardente, Hugues, Lomet, Didier, Cognié, Juliette, Dufourny, Laurence

“…Opioid peptides are well‐known modulators of the central control of reproduction. Among them, dynorphin coexpressed in kisspeptin (KP) neurons of the arcuate…”
Get full text

How does apelin affect LH levels? An investigation at the level of GnRH and KNDy neurons by Abot, Anne, Robert, Vincent, Fleurot, Renaud, Dardente, Hugues, Hellier, Vincent, Froment, Pascal, Duittoz, Anne, Knauf, Claude, Dufourny, Laurence

“…Hypothalamic control of reproduction relies on GnRH and kisspeptin (KP) secretions. KP neurons are sensitive to sex steroids and metabolic status and their…”
Get full text

Differential effects of colchicine on the induction of nitric oxide synthase in neurons containing progesterone receptors of the guinea pig hypothalamus by Dufourny, Laurence, Leroy, Danièle, Warembourg, Maryvonne

“…Using nicotinamide-adenine-dinucleotide-phosphate-diaphorase (NADPHd) histochemistry, we analyzed the effects of an intracerebroventricular injection of…”
Get full text

Diabetes Type 2 and Kisspeptin: Central and Peripheral Sex-Specific Actions by Dudek, Monika, Ziarniak, Kamil, Cateau, Marie-Line, Dufourny, Laurence, Sliwowska, Joanna Helena

“…Kisspeptin (KP) plays a major role in the regulation of reproduction governed by the hypothalamic–pituitary–gonadal (HPG) axis. However, recent findings…”
Get full text

Estrogen modulation of neuropeptides: somatostatin, neurotensin and substance P, in the ventrolateral and arcuate nuclei of the female guinea pig by Dufourny, Laurence, Warembourg, Maryvonne

“…In the guinea pig, steroid target cells reside in the ventrolateral hypothalamic nucleus (VLH), an important site in the mediation of female receptive…”
Get full text

No Evidence That RFamide-Related Peptide 3 Directly Modulates LH Secretion in the Ewe by Decourt, C, Anger, K, Robert, V, Lomet, D, Bartzen-Sprauer, J, Caraty, A, Dufourny, L, Anderson, G, Beltramo, M

“…The neuropeptide RFamide-related peptide 3 (RFRP-3) has been implicated in the control of gonadotropin secretion in both birds and mammals. However, in…”
Get full text

The content of thyroid hormone receptor alpha in ewe kisspeptin neurons is not season-dependent by Dufourny, Laurence, Gennetay, Dominique, Martinet, Stéphanie, Lomet, Didier, Caraty, Alain

“…Seasonal reproduction is grounded in several mechanisms, among which are plasticity in both hormone synthesis and neuronal networks. Increased daylength on…”
Get full text

Central control of reproduction: A KISS and beyond by Dufourny, Laurence, Beltramo, Massimiliano

“…Kisspeptin, an endogenous neuropeptide, is the most potent secretagogue of gonadotropin-releasing hormone.In seasonally breeding mammals, kisspeptin is…”
Get full text

Acute injection and chronic perfusion of kisspeptin elicit gonadotropins release but fail to trigger ovulation in the mare by Decourt, Caroline, Caraty, Alain, Briant, Christine, Guillaume, Daniel, Lomet, Didier, Chesneau, Didier, Lardic, Lionel, Duchamp, Guy, Reigner, Fabrice, Monget, Philippe, Dufourny, Laurence, Beltramo, Massimiliano, Dardente, Hugues

“…Kisspeptin has emerged as the most potent gonadotropin-releasing hormone (GnRH) secretagogue and appears to represent the penultimate step in the central…”
Get full text

Neuroanatomical connections between kisspeptin neurones and somatostatin neurones in the female and male rat hypothalamus: A possible involvement of SSTR1 in kisspeptin release by Dufourny, L., Delmas, O., Teixeira‐Gomes, A.‐P., Decourt, C., Sliwowska, J. H.

“…Somatostatin (SST), a neuropeptide involved in the central modulation of several physiological functions, is co‐distributed in the same hypothalamic areas as…”
Get full text

PCB153 (2,2′,4,4′,5,5′-hexachlorobiphenyl) differentially affects the VEGF/VEGFR system depending on photoperiod in the ovine choroid plexus by Szczepkowska, Aleksandra, Lagaraine, Christine, Robert, Vincent, Młynarczuk, Jarosław, Dufourny, Laurence, Thiéry, Jean-Claude, Skipor, Janina

“…Ortho-substituted polychlorinated biphenyls (PCBs) preferentially accumulate in the brain and cerebrospinal fluid (CSF) compared with other PCBs. We previously…”
Get full text

Original Design of Fluorescent Ligands by Fusing BODIPY and Melatonin Neurohormone by Thireau, Jérémy, Marteaux, Justine, Delagrange, Philippe, Lefoulon, Francois, Dufourny, Laurence, Guillaumet, Gérald, Suzenet, Franck

“…An original design and synthesis of fluorescent ligands for melatonin receptor studies is presented and consists in the fusion of the endogenous ligand with…”
Get full text

Tight junction proteins vary in the choroid plexus of ewes according to photoperiod by Lagaraine, Christine, Skipor, Janina, Szczepkowska, Aleksandra, Dufourny, Laurence, Thiery, Jean-Claude

“…Abstract Sheep from temperate latitudes exhibit seasonal variations in many physiological functions such as reproduction, food intake, body weight, and pelage…”
Get full text

Effects of Photoperiod on Kisspeptin Neuronal Populations of the Ewe Diencephalon in Connection with Reproductive Function by Chalivoix, S., Bagnolini, A., Caraty, A., Cognié, J., Malpaux, B., Dufourny, L.

“…Kisspeptin (Kiss) is a key regulator of reproductive function in both prepubertal and adult mammals. Its expression appears to vary throughout the year in…”
Get full text