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Keywords: melatonin
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Journal Articles
J Exp Biol (2021) 224 (22): jeb243153.
Published: 25 November 2021
...Aymam C. de Figueiredo; Stefanny C. M. Titon; João C. Cyrino; Letícia A. K. Nogueira; Fernando R. Gomes ABSTRACT Mammals show immune up-regulation and increased plasma and local (gastrointestinal tract) concentrations of some immunoregulatory hormones, such as corticosterone and melatonin, after...
Includes: Supplementary data
Journal Articles
J Exp Biol (2021) 224 (10): jeb239350.
Published: 14 May 2021
..., by disrupting the nocturnal production of the hormone melatonin. Nestlings were exposed to a light source emitting 3 lx for seven consecutive nights. Subsequently, nestlings were immune challenged with a lipopolysaccharide injection, and we measured haptoglobin and nitric oxide levels pre- and post-injection...
Journal Articles
J Exp Biol (2020) 223 (6): jeb217687.
Published: 25 March 2020
...Cristina Sáenz de Miera; Matthew Beymer; Kevin Routledge; Elżbieta Król; Colin Selman; David G. Hazlerigg; Valérie Simonneaux ABSTRACT MSM/Ms (MSM) is a mouse strain derived from Japanese wild mice, Mus musculus molossinus , that maintains the ability to synthesize melatonin in patterns reflecting...
Journal Articles
J Exp Biol (2019) 222 (24): jeb210914.
Published: 12 December 2019
...Sara Lupi; Virginie Canoine; Paolo Pedrini; Leonida Fusani ABSTRACT The hormone melatonin, a main component of the avian circadian system, plays an important role in the physiological transitions that accompany activation of the migratory phenotype in passerine birds. Most small passerines migrate...
Journal Articles
J Exp Biol (2018) 221 (6): jeb156893.
Published: 15 March 2018
... Urban ecology ALAN Hormones Metabolism Stress Sleep Glucocorticoid Thyroid Melatonin Organisms have evolved under a natural dark and light cycle for millions of years, so their ability to survive and reproduce depends on not only occupying a favorable spatial niche but also an optimal...
Journal Articles
J Exp Biol (2017) 220 (17): 3154–3161.
Published: 1 September 2017
...Jan S. Boratyński; Małgorzata Jefimow; Michał S. Wojciechowski ABSTRACT The duration of melatonin (MEL) secretion conveys information about day length and initiates a cascade of seasonal phenotypic adjustments in photoresponsive mammals. With shortening days, animals cease reproduction, minimize...
Includes: Supplementary data
Journal Articles
J Exp Biol (2017) 220 (9): 1684–1692.
Published: 1 May 2017
... lighting on photoentrainment. The present results indicate that M. namaquensis and R. pumilio adjust their daily patterns in locomotor activity, urine production and melatonin excretion according to the light–dark cycle. Micaelamys namaquensis and R. pumilio respond differently to varying...
Includes: Supplementary data
Journal Articles
J Exp Biol (2014) 217 (8): 1407–1416.
Published: 15 April 2014
...Marcos A. López-Patiño; Manuel Gesto; Marta Conde-Sieira; José L. Soengas; Jesús M. Míguez Cortisol has been suggested to mediate the effect of stress on pineal melatonin synthesis in fish. Therefore, we aimed to determine how pineal melatonin synthesis is affected by exposing rainbow trout...
Journal Articles
J Exp Biol (2014) 217 (7): 1046–1057.
Published: 1 April 2014
...Ni Y. Feng; Andrew H. Bass Melatonin is a well-documented time-keeping hormone that can entrain an individual's physiology and behavior to the day–night cycle, though surprisingly little is known about its influence on the neural basis of social behavior, including vocalization. Male midshipman...
Includes: Supplementary data
Journal Articles
J Exp Biol (2013) 216 (10): 1938–1948.
Published: 15 May 2013
...D. Cazaméa-Catalan; E. Magnanou; R. Helland; L. Besseau; G. Boeuf; J. Falcón; E. H. Jørgensen SUMMARY Melatonin contributes to synchronizing major biological and behavioral functions with cyclic changes in the environment. Arylalkylamine N -acetyltransferase (AANAT) is responsible for a daily...
Journal Articles
J Exp Biol (2012) 215 (22): 4034–4040.
Published: 15 November 2012
...Lilach Ashkenazi; Abraham Haim SUMMARY Light at night and light interference (LI) disrupt the natural light:dark cycle, causing alterations at physiological and molecular levels, partly by suppressing melatonin (MLT) secretion at night. Heat shock proteins (HSPs) can be activated in response...
Includes: Supplementary data
Journal Articles
J Exp Biol (2012) 215 (17): 3112–3119.
Published: 1 September 2012
... during the night. A similar decrease in parameters related to glucosensing in the liver was observed when fish under day conditions were treated with melatonin, suggesting a modulatory role of melatonin in day–night changes of the glucosensing response in the same tissue. * Author for correspondence...
Journal Articles
J Exp Biol (2012) 215 (10): 1691–1699.
Published: 15 May 2012
... to classical neurotransmitters and nitric oxide but produced light after melatonin (MT) application. Prolactin and α-melanocyte-stimulating hormone inhibited this hormonally induced luminescence as well as the spontaneous luminescence from the photogenic tissue. The action of MT seems to be mediated by binding...
Journal Articles
J Exp Biol (2011) 214 (6): 928–936.
Published: 15 March 2011
...Marcos A. López-Patiño; Arnau Rodríguez-Illamola; Manuel Gesto; José L. Soengas; Jesús M. Míguez Melatonin has been suggested to play a role in fish osmoregulation, and in salmonids has been related to the timing of adaptive mechanisms during smolting. It has been described that acclimation...
Journal Articles
J Exp Biol (2010) 213 (17): 3005–3011.
Published: 1 September 2010
...Julien M. Claes; Jenny Krönström; Susanne Holmgren; Jérôme Mallefet SUMMARY Photophores (photogenic organs) of the lantern shark Etmopterus spinax are under hormonal control, with prolactin (PRL) and melatonin (MT) triggering the light emission. Differential sensitivity to these hormones in adult...
Journal Articles
J Exp Biol (2010) 213 (11): 1852–1858.
Published: 1 June 2010
... that in the largest of these zones (ventral zone), photophores are under hormonal control, light being triggered by both melatonin (MT) and prolactin (PRL). In this study, we analysed the luminescent responses to MT and PRL in five other luminous zones from 12 female and eight male E. spinax specimens. The results...
Journal Articles
J Exp Biol (2009) 212 (22): 3684–3692.
Published: 15 November 2009
.... Isolated photophore-filled skin patches produced light under melatonin (MT) and prolactin (PRL) stimulation in a dose-dependent manner but did not react to classical neurotransmitters. Theα-melanocyte-stimulating hormone (α-MSH) had an inhibitory effect on hormonal-induced luminescence. Because luzindole...
Journal Articles
J Exp Biol (2009) 212 (19): 3108–3118.
Published: 1 October 2009
...) diel melatonin and corticosterone rhythms; (2) sex steroid hormone and corticosterone profiles; and (3) the expression of reproductive behavior following emergence. Elevated hibernation temperatures (i.e. 10°C versus 5°C) significantly increased overall melatonin and decreased corticosterone...
Journal Articles
J Exp Biol (2006) 209 (22): 4414–4419.
Published: 15 November 2006
...-pigmentary antioxidant(melatonin) in the drinking water. If the antioxidant properties of melatonin protect carotenoids from oxidation, we predict that birds supplemented with melatonin should have redder bills than birds not supplemented with melatonin,and that birds supplemented with carotenoids...
Journal Articles
J Exp Biol (2004) 207 (3): 437–441.
Published: 22 January 2004
...Gaia Izzo; Michela d'Istria; Ismene Serino; Sergio Minucci SUMMARY In the present study, we have utilized 17β-estradiol to induce the increase of mast cell number in order to verify the melatonin effect on mast cell accumulation in the frog testicular interstitium. Data obtained from in vivo...