Noradrenaline- and melatonin-mediated regulation of pigment aggregation in fish melanophores. 2003

Sara Aspengren, and Helén Nilsson Sköld, and Gabriela Quiroga, and Lena Mårtensson, and Margareta Wallin
Department of Zoology and Zoophysiology, Göteborg University, Göteborg, Sweden. sara.aspengren@zool.gu.se

The effects of melatonin and noradrenaline (NA) on bi-directional melanosome transport were analysed in primary cultures of melanophores from the Atlantic cod. Both agents mediated rapid melanosome aggregation, and by using receptor antagonists, melatonin was found to bind to a melatonin receptor whereas NA binds to an alpha2-adrenoceptor. It has previously been stated that melatonin-mediated melanosome aggregation in Xenopus is coupled with tyrosine phosphorylation of a so far unidentified high molecular weight protein and we show that although acting through different receptors and through somewhat different downstream signalling events, tyrosine phosphorylation is of the utmost importance for melanosome aggregation mediated by both NA and melatonin in cod melanophores. Together with cyclic adenosine 3-phosphate-fluctuations, tyrosine phosphorylation functions as a switch signal for melanosome aggregation and dispersion in these cells.

UI MeSH Term Description Entries
D007529 Isoflavones 3-Phenylchromones. Isomeric form of FLAVONOIDS in which the benzene group is attached to the 3 position of the benzopyran ring instead of the 2 position. 3-Benzylchroman-4-One,3-Benzylidene-4-Chromanone,Homoisoflavone,Homoisoflavones,Isoflavone,Isoflavone Derivative,3-Benzylchroman-4-Ones,3-Benzylidene-4-Chromanones,Isoflavone Derivatives,3 Benzylchroman 4 One,3 Benzylchroman 4 Ones,3 Benzylidene 4 Chromanone,3 Benzylidene 4 Chromanones,Derivative, Isoflavone,Derivatives, Isoflavone
D008547 Melanophores Chromatophores (large pigment cells of fish, amphibia, reptiles and many invertebrates) which contain melanin. Short term color changes are brought about by an active redistribution of the melanophores pigment containing organelles (MELANOSOMES). Mammals do not have melanophores; however they have retained smaller pigment cells known as MELANOCYTES. Melanophore
D008550 Melatonin A biogenic amine that is found in animals and plants. In mammals, melatonin is produced by the PINEAL GLAND. Its secretion increases in darkness and decreases during exposure to light. Melatonin is implicated in the regulation of SLEEP, mood, and REPRODUCTION. Melatonin is also an effective antioxidant.
D009638 Norepinephrine Precursor of epinephrine that is secreted by the ADRENAL MEDULLA and is a widespread central and autonomic neurotransmitter. Norepinephrine is the principal transmitter of most postganglionic sympathetic fibers, and of the diffuse projection system in the brain that arises from the LOCUS CERULEUS. It is also found in plants and is used pharmacologically as a sympathomimetic. Levarterenol,Levonorepinephrine,Noradrenaline,Arterenol,Levonor,Levophed,Levophed Bitartrate,Noradrenaline Bitartrate,Noradrénaline tartrate renaudin,Norepinephrin d-Tartrate (1:1),Norepinephrine Bitartrate,Norepinephrine Hydrochloride,Norepinephrine Hydrochloride, (+)-Isomer,Norepinephrine Hydrochloride, (+,-)-Isomer,Norepinephrine d-Tartrate (1:1),Norepinephrine l-Tartrate (1:1),Norepinephrine l-Tartrate (1:1), (+,-)-Isomer,Norepinephrine l-Tartrate (1:1), Monohydrate,Norepinephrine l-Tartrate (1:1), Monohydrate, (+)-Isomer,Norepinephrine l-Tartrate (1:2),Norepinephrine l-Tartrate, (+)-Isomer,Norepinephrine, (+)-Isomer,Norepinephrine, (+,-)-Isomer
D010860 Pigments, Biological Any normal or abnormal coloring matter in PLANTS; ANIMALS or micro-organisms. Biological Pigments
D002478 Cells, Cultured Cells propagated in vitro in special media conducive to their growth. Cultured cells are used to study developmental, morphologic, metabolic, physiologic, and genetic processes, among others. Cultured Cells,Cell, Cultured,Cultured Cell
D004791 Enzyme Inhibitors Compounds or agents that combine with an enzyme in such a manner as to prevent the normal substrate-enzyme combination and the catalytic reaction. Enzyme Inhibitor,Inhibitor, Enzyme,Inhibitors, Enzyme
D005399 Fishes A group of cold-blooded, aquatic vertebrates having gills, fins, a cartilaginous or bony endoskeleton, and elongated bodies covered with scales.
D000316 Adrenergic alpha-Agonists Drugs that selectively bind to and activate alpha adrenergic receptors. Adrenergic alpha-Receptor Agonists,alpha-Adrenergic Receptor Agonists,Adrenergic alpha-Agonist,Adrenergic alpha-Receptor Agonist,Receptor Agonists, Adrenergic alpha,Receptor Agonists, alpha-Adrenergic,alpha-Adrenergic Agonist,alpha-Adrenergic Agonists,alpha-Adrenergic Receptor Agonist,Adrenergic alpha Agonist,Adrenergic alpha Agonists,Adrenergic alpha Receptor Agonist,Adrenergic alpha Receptor Agonists,Agonist, Adrenergic alpha-Receptor,Agonist, alpha-Adrenergic,Agonist, alpha-Adrenergic Receptor,Agonists, Adrenergic alpha-Receptor,Agonists, alpha-Adrenergic,Agonists, alpha-Adrenergic Receptor,Receptor Agonist, alpha-Adrenergic,Receptor Agonists, alpha Adrenergic,alpha Adrenergic Agonist,alpha Adrenergic Agonists,alpha Adrenergic Receptor Agonist,alpha Adrenergic Receptor Agonists,alpha-Agonist, Adrenergic,alpha-Agonists, Adrenergic,alpha-Receptor Agonist, Adrenergic,alpha-Receptor Agonists, Adrenergic
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia

Related Publications

Sara Aspengren, and Helén Nilsson Sköld, and Gabriela Quiroga, and Lena Mårtensson, and Margareta Wallin
February 1994, Pigment cell research,
Sara Aspengren, and Helén Nilsson Sköld, and Gabriela Quiroga, and Lena Mårtensson, and Margareta Wallin
January 1987, Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology,
Sara Aspengren, and Helén Nilsson Sköld, and Gabriela Quiroga, and Lena Mårtensson, and Margareta Wallin
December 1991, British journal of pharmacology,
Sara Aspengren, and Helén Nilsson Sköld, and Gabriela Quiroga, and Lena Mårtensson, and Margareta Wallin
March 1992, European journal of pharmacology,
Sara Aspengren, and Helén Nilsson Sköld, and Gabriela Quiroga, and Lena Mårtensson, and Margareta Wallin
May 2002, Journal of neurochemistry,
Sara Aspengren, and Helén Nilsson Sköld, and Gabriela Quiroga, and Lena Mårtensson, and Margareta Wallin
December 1992, The Journal of cell biology,
Sara Aspengren, and Helén Nilsson Sköld, and Gabriela Quiroga, and Lena Mårtensson, and Margareta Wallin
January 1984, Cell motility,
Sara Aspengren, and Helén Nilsson Sköld, and Gabriela Quiroga, and Lena Mårtensson, and Margareta Wallin
December 1973, Zeitschrift fur Zellforschung und mikroskopische Anatomie (Vienna, Austria : 1948),
Sara Aspengren, and Helén Nilsson Sköld, and Gabriela Quiroga, and Lena Mårtensson, and Margareta Wallin
May 2003, Medical & biological engineering & computing,
Sara Aspengren, and Helén Nilsson Sköld, and Gabriela Quiroga, and Lena Mårtensson, and Margareta Wallin
September 1985, Life sciences,
Copied contents to your clipboard!