Search Results - "Gayrard, V"

A new LC/MS method for specific determination of human systemic exposure to bisphenol A, F and S through their metabolites: Application to cord blood samples by Gély, C.A., Huesca, A., Picard-Hagen, N., Toutain, P.L., Berrebi, A., Gauderat, G., Gayrard, V., Lacroix, M.Z.

“…•New method for the direct analysis bisphenol-glucuronide in human plasma is proposed.•The conditions of on-line SPE and derivatization procedure were…”
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Effect of gonadorelin, lecirelin, and buserelin on LH surge, ovulation, and progesterone in cattle by Picard-Hagen, N., Lhermie, G., Florentin, S., Merle, D., Frein, P., Gayrard, V.

“…Analogs of gonadoliberin (GnRH) are widely used in cattle to synchronize estrus and to induce ovulation, as well as for the treatment of ovarian cysts. The aim…”
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Impact of the polycarbonate strippers used in assisted reproduction techniques on embryonic development by Moreau, J, Gatimel, N, Lippi, Y, Tavenier, G, Fauque, P, Guilleman, M, Naylies, C, Huesca, A A, Gayrard, V, Parinaud, J, Leandri, R D

“…Abstract STUDY QUESTION Do daily manipulations of preimplantation embryos with polycarbonate (PC)—made bisphenol A (BPA)—releasing strippers influence embryo…”
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Bidirectional placental transfer of Bisphenol A and its main metabolite, Bisphenol A-Glucuronide, in the isolated perfused human placenta by Corbel, T., Gayrard, V., Puel, S., Lacroix, M.Z., Berrebi, A., Gil, S., Viguié, C., Toutain, P.-L., Picard-Hagen, N.

“…•Human placenta has little capacity to restrict fetal exposure to Bisphenol A.•The fetal capacity to extrude Bisphenol A-Glucuronide is limited.•It is unlikely…”
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Bisphenol A in culture media and plastic consumables used for ART by Gatimel, N., Lacroix, M.Z., Chanthavisouk, S., Picard-Hagen, N., Gayrard, V., Parinaud, J., Léandri, R.D.

“…Abstract STUDY QUESTION Do the embryo culture media and plastic materials used during assisted reproductive technology (ART) laboratory procedures expose…”
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Basal Ti level in the human placenta and meconium and evidence of a materno-foetal transfer of food-grade TiO2 nanoparticles in an ex vivo placental perfusion model by Guillard, A, Gaultier, E, Cartier, C, Devoille, L, Noireaux, J, Chevalier, L, Morin, M, Grandin, F, Lacroix, M.Z, Coméra, C, Cazanave, A, de Place, A, Gayrard, V, Bach, V, Chardon, K, Bekhti, N, Adel-Patient, K, Vayssiere, C, Fisicaro, P, Feltin, N, de la Farge, F, Picard-Hagen, N, Lamas, B, Houdeau, E

“…Abstract Background Titanium dioxide (TiO 2 ) is broadly used in common consumer goods, including as a food additive (E171 in Europe) for colouring and…”
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Simultaneous quantification of bisphenol A and its glucuronide metabolite (BPA-G) in plasma and urine: Applicability to toxicokinetic investigations by Lacroix, M.Z., Puel, S., Collet, S.H., Corbel, T., Picard-Hagen, N., Toutain, PL, Viguié, C., Gayrard, V.

“…Bisphenol A (BPA) is a widely used plasticizer that can contaminate food and the wider environment and lead to human exposure. In humans, it is mainly…”
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THE K-PROCESS ON A TREE AS A SCALING LIMIT OF THE GREM-LIKE TRAP MODEL by Fontes, L. R. G., Gava, R. J., Gayrard, V.

“…We introduce trap models on a finite volume k-level tree as a class of Markov jump processes with state space the leaves of that tree. They serve to describe…”
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Absence d’efficacité de la quinacrine dans le traitement des maladies à prions : possible explication à caractère pharmacologique by N. PICARD-HAGEN, V. GAYRARD, C. VIGUIE, V. LAROUTE, P. ALAYRAC

“…En raison des incertitudes épidémiologiques relatives aux maladies à prions, il est urgent de découvrir et de développer des thérapeutiques anti-prions chez…”
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Comparison of pharmacokinetic profiles of doramectin and ivermectin pour-on formulations in cattle by Gayrard, V., Alvinerie, M., Toutain, P.L.

“…The plasma pharmacokinetics of doramectin and invermectin after topical administration (500 μg kg −1) were compared over a 50-day period in 24 young beef…”
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Fipronil-induced disruption of thyroid function in rats is mediated by increased total and free thyroxine clearances concomitantly to increased activity of hepatic enzymes by Leghait, Julien, Gayrard, Véronique, Picard-Hagen, Nicole, Camp, Marion, Perdu, Elisabeth, Toutain, Pierre-Louis, Viguié, Catherine

“…Abstract Fipronil is a widely used phytosanitary product and insecticide for pets. In the rat, fipronil can disrupt thyroid function by decreasing plasma…”
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Alterations of somatotropic function in prion disease in sheep by Viguié, C, Chilliard, Y, Gayrard, V, Picard-Hagen, N, Monget, P, Dutour, A, Toutain, P-L

“…This study aimed at investigating the possible linkage between natural scrapie and alterations of the somatotropic axis. Scrapie-affected ewes exhibited 2-fold…”
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Short-day effects of melatonin on luteinizing hormone secretion in the ewe: evidence for central sites of action in the mediobasal hypothalamus by Malpaux, B. (INRA, Nouzilly, France), Daveau, A, Maurice, F, Gayrard, V, Thiery, J.C

“…Experiments were designed to localize the central sites of action of melatonin involved in the control of seasonal reproduction. Ewes were exposed to long days…”
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Passage of progesterone into the brain changes with photoperiod in the ewe by Thiéry, J. C., Robel, P., Canepa, S., Delaleu, B., Gayrard, V., Picard-Hagen, N., Malpaux, B.

“…In this study we tested the hypothesis that photoperiod can modulate steroid access to the brain in a seasonal breeder. To this goal, we compared the passage…”
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Interspecies variations of corticosteroid-binding globulin parameters by Gayrard, V., Alvinerie, M., Toutain, P.L.

“…In mammalian plasma, cortisol binds to a specific α 1-glycoprotein: corticosteroid-binding globulin (CBG). In this study, we measured the protein binding of…”
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A nonlabeled method to evaluate cortisol production rate by modeling plasma CBG-free cortisol disposition by Picard-Hagen, N, Gayrard, V, Alvinerie, M, Smeyers, H, Ricou, R, Bousquet-Melou, A, Toutain, P L

“…This study aimed to develop a nonlabeled method for the measurement of cortisol production rate to evaluate adrenal function. The cortisol production rate…”
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Bidirectional placental transfer of BPA and its metabolite in the perfused human placental cotyledon model by Corbel, T., Gayrard, V., Berrebi, A., Gil, S., Lacroix, M., Puel, S., Viguié, C., Toutain, Pl, Picard-Hagen, N.

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Thermodynamic limit of the q-state potts-Hopfield model with infinitely many patterns by GAYRARD, V

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Estradiol increases tyrosine hydroxylase activity of the A15 nucleus dopaminergic neurons during long days in the ewe by Gayrard, V, Malpaux, B, Tillet, Y, Thiery, J.C

“…In the ewe, the inhibition of LH secretion during long days results from increased negative feedback by estradiol. This effect depends on aminergic systems,…”
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Major Hypercorticism Is an Endocrine Feature of Ewes with Naturally Occurring Scrapie by Gayrard, V, Picard-Hagen, N, Grino, M, Sauze, N, Grandjean, C, Galea, J, Andreoletti, O, Schelcher, F, Toutain, P. L

“…The aim of this study was to identify the origin of scrapie-induced hypercortisolism. Cortisol and ACTH kinetics and production rate were measured in 14 ewes…”
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