Search Results - "Guerlotté, Jérôme"

Hydroxyindole-O-methyltransferase in the chicken retina: immunocytochemical localization and daily rhythm of mRNA by Guerlotté, J, Grève, P, Bernard, M, Grechez-Cassiau, A, Morin, F, Collin, J P, Voisin, P

“…In the vertebrate retina and pineal gland, melatonin production displays diurnal variations with high levels at night. Hydroxyindole-O-methyltransferase…”
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Circadian regulation of hydroxyindole-O-methyltransferase mRNA in the chicken pineal gland in vivo and in vitro by Grève, P, Voisin, P, Grechez-Cassiau, A, Bernard, M, Collin, J P, Guerlotté, J

“…The production of the pineal hormone melatonin displays circadian variations with high levels at night. The last enzyme involved in melatonin biosynthesis is…”
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Survey of Naegleria fowleri in geothermal recreational waters of Guadeloupe (French West Indies) by Moussa, Mirna, De Jonckheere, Johan F, Guerlotté, Jérôme, Richard, Vincent, Bastaraud, Alexandra, Romana, Marc, Talarmin, Antoine

“…In 2008 a fatal case of primary amoebic meningoencephalitis, due to the amoeboflagellate Naegleria fowleri, occurred in Guadeloupe, French West Indies, after a…”
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An Optimized Most Probable Number (MPN) Method to Assess the Number of Thermophilic Free-Living Amoebae (FLA) in Water Samples by Moussa, Mirna, Marcelino, Isabel, Richard, Vincent, Guerlotté, Jérôme, Talarmin, Antoine

“…Detection and quantification of pathogenic free-living amoebae (FLA) in water samples is critical for assessing water quality and for disease management…”
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Soil is the origin for the presence of Naegleria fowleri in the thermal recreational waters by Moussa, Mirna, Tissot, Océane, Guerlotté, Jérôme, De Jonckheere, Johan F, Talarmin, Antoine

“…Naegleria fowleri is found in most geothermal baths of Guadeloupe and has been responsible for the death of a 9-year-old boy who swam in one of these baths in…”
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Morphometric characterisation of an arboreal lizard (Anolis marmoratus marmoratus) by Legreneur, P., Magnin, H., Guerlotte, J., Pelle, E., Placide, M.-A., Bels, V.

“…Hydroxyindole-O-methyltransferase (HIOMT) catalyzes the final step of melatonin biosynthesis and appears to be specifically expressed in the pineal gland and…”
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Molecular and cellular aspects of hydroxyindole-O-methyltransferase expression in the developing chick pineal gland by Bernard, M, Voisin, P, Guerlotté, J, Collin, J P

“…The pineal gland influences circadian activity and seasonal breeding through the production of an indolic hormone, melatonin. The terminal step of melatonin…”
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Cellular localization of hydroxyindole-O-methyltransferase mRNA in the chicken pineal gland by Grève, P, Bernard, M, Voisin, P, Cogné, M, Collin, J P, Guerlotte, J

“…Hydroxyindole-O-methyltransferase (HIOMT), is the last enzyme of the melatonin biosynthesis pathway. We have applied immunocytochemistry and in situ…”
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Differential regulation of melatonin synthesis genes and phototransduction genes in embryonic chicken retina and cultured retinal precursor cells by Cailleau, Virginie, Bernard, Marianne, Morin, Fabrice, Guerlotte, Jerome, Voisin, Pierre

“…Photoreceptor differentiation involves the activation of two specific sets of genes; those encoding the proteins of the phototransduction cascade and those…”
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Melatonin synthesis pathway : circadian regulation of the genes encoding the key enzymes in the chicken pineal gland and retina by BERNARD, M, GUERLOTTE, J, GREVE, P, GRECHEZ-CASSIAU, A, IUVONE, M. P, ZATZ, M, CHONG, N. W, KLEIN, D. C, VOISIN, P

“…The mRNAs encoding three enzymes of the melatonin synthesis pathway (tryptophan hydroxylase (TPH), arylalkylamine-N-acetyltransferase (AANAT) and…”
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Transcriptional regulation of hydroxyindole O-methyltransferase in the chicken pineal gland : day/night changes and long-term effects of light and darkness by BERNARD, M, GUERLOTTE, J, COGNE, M, GREVE, P, COLLIN, J.-P, VOISIN, P

“…The indolic hormone melatonin is produced by the pineal gland according to a daily rhythm. The terminal step of melatonin synthesis is catalysed by…”
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Molecular cloning and nucleotide sequence of a cDNA encoding hydroxyindole O-methyltransferase from chicken pineal gland by VOISIN, P, GUERLOTTE, J, BERNARD, M, COLLIN, J.-P, COGNE, M

“…Hydroxyindole O-methyltransferase (EC 2.1.1.4) is the enzyme that catalyses the synthesis of melatonin in the pineal gland and in the retina. Polyadenylated…”
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An antiserum against chicken hydroxyindole-O-methyltransferase reacts with the enzyme from pineal gland and retina and labels pineal modified photoreceptors by Voisin, P, Guerlotté, J, Collin, J P

“…Biosynthesis of the indolic hormone melatonin has been reported in the pineal gland and retina. The terminal step of melatonin synthesis is catalysed by…”
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Rhythmic melatonin biosynthesis in a photoreceptive pineal organ: a study in the pike by Falcón, J, Guerlotté, J F, Voisin, P, Collin, J P

“…Activities of pineal N-acetyltransferase (NAT) and hydroxyindole-O-methyltransferase, involved in the biosynthesis of melatonin from serotonin, were assessed…”
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Hydroxyindole- O-methyltransferase gene expression in the pineal gland of chicken embryo: development of messenger RNA levels and regulation by serum by Grechez-Cassiau, Aline, Grève, Pierre, Guerlotté, Jérôme, Collin, Jean-Pierre, Voisin, Pierre

“…Hydroxyindole- O-methyltransferase (HIOMT), the enzyme which catalyzes the final step of melatonin biosynthesis, constitutes a marker of the functional…”
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5.-nucleotidase activity in the pineal organ of the pike: an electron-microscopic study by FALCON, J, BESSE, C, GUERLOTTE, J, COLLIN, J.-P

“…To date, it is still unknown whether the metabolism of purine nucleotides and nucleosides plays an important role in the pineal organ of lower vertebrates. We…”
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Long-term effects of constant light or darkness on chicken pineal hydroxyindole-O-methyltransferase expression : biochemical and cellular aspects by GUERLOTTE, J, VOISIN, P, BERNARD, M, BRISSON, FALCON, J, BLASQUEZ, COLLIN, J.-P

“…1. Chickens kept in constant light, as opposed to constant darkness, display a twofold increase in the activity of pineal hydroxyindole-O-methyltransferase…”
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Cyclic AMP increases hydroxyindole- O-methyltransferase mRNA levels in the chicken pineal gland, but is not required for circadian rhythmicity of this transcript by Grechez-Cassiau, Aline, Grève, Pierre, Guerlotté, Jérome, Voisin, Pierre

“…Hydroxyindole- O-methyltransferase (HIOMT) plays an important role as the final enzyme in the synthesis of melatonin. In the chicken pineal gland, HIOMT mRNA…”
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Immunocytochemical localisation of hydroxyindole-O-methyltransferase in pineal photoreceptor cells of several fish species by Falcón, J, Bégay, V, Goujon, J M, Voisin, P, Guerlotté, J, Collin, J P

“…Melatonin is an internal "Zeitgeber," involved in the timing and control of a number of rhythmic functions and behaviours. Its synthesising cells remain to be…”
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Synthesis of melatonin by the pineal modified photoreceptors of birds immunocytochemical localization of hydroxyindole-O-methyltransferase by Guerlotte, J, Voisin, P, Brisson, P, Faure, J P, Collin, J P

“…Photoperiodic control of several biological rhythms is exerted through the inhibitory effect of light on melatonin synthesis in the pineal organ…”
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