Results 171 to 180 of about 3,969 (218)
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Action of melanophore-stimulating hormone on melanophores of the cyprinid fish Zacco temmincki
Comparative Biochemistry and Physiology Part C: Comparative Pharmacology, 19821. Alpha MSH was extremely effective in inducing melanosome dispersion in both innervated and denervated melanophores in isolated scales of Zacco termmincki. 2. The sensitivity of the melanophores to MSH did not change after denervation. 3. The MSH action was blocked by mersalyl, a SH inhibitor, but not by any of alpha and beta adrenergic blockers.
T, Iga, I, Takabatake
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Melatonin‐induced desensitization in amphibian melanophores
Journal of Experimental Zoology, 1993AbstractVideo‐microscopic examination of pigment granule translocation in cultured amphibian melanophores provides continuous, real‐time observation of cellular responses to hormonal and pharmacologic agents and is particularly useful for studying the mechanisms underlying melatonin‐induced pigment aggregation.
M D, Rollag, G R, Lynch
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Fine structure of tadpole melanophores
The Anatomical Record, 1966AbstractThe fine structure of frog tadpole melanophores has been found to be different from that of teleost chromatophores (Falk and Rhodin, '57). The cytoplasm is not divided into inner and outer regions. Organelles are distributed throughout the cytoplasm. A special search for microtubules was made and only a single such structure could be found.
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Functional Screening in the Melanophore Bioassay
Current Protocols in Pharmacology, 2005AbstractThe melanophore bioassay is a robust, sensitive, and versatile procedure for screening G protein–coupled receptors in a variety of formats. Because melanophores contain a wide variety of G proteins, they can be employed as a sensitive, real‐time response system for studying transfected receptors and for defining equilibria for drug effects ...
Channa, Jayawickreme +5 more
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Melanophore activity of urodele melanocytes
Canadian Journal of Zoology, 1971Melanophore activity of dermal and epidermal melanocytes in Taricha torosa and Ambystoma gracile has been observed with tricaine methanesulfonate (MS222) dissolved in habitat water, as well as with injected intermedin or injected epinephrine.
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Modeling of pattern regulation in melanophores
Journal of Theoretical Biology, 2007Melanosomes, pigment granules in melanophores, play a principal role in physiological color adaptation of fish and frog. Melanophores regulate melanosome trafficking on cytoskeletal filaments to generate a range of spatiotemporal patterns. Here, we present the first comprehensive model of spatiotemporal evolution of melanosome patterns.
Dinh, Anh-Tuan +2 more
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Regulation of pigmentation in zebrafish melanophores
Pigment Cell Research, 2006SummaryIn comparison with the molecular genetics of melanogenesis in mammals, the regulation of pigmentation in poikilothermic vertebrates is poorly understood. Mammals undergo morphological colour change under hormonal control, but strikingly, many lower vertebrates display a rapid physiological colour change in response to the same hormones.
Darren W, Logan +2 more
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Vimentin intermediate filaments in fish melanophores
Journal of Cell Science, 1987ABSTRACT The distribution and chemical composition of intermediate filaments in cultured melanophores of two teleost species -Gymnocorymbus ternetzi and Pterophyllum scalare -were studied by immunofluorescence staining and immunoblotting techniques.
F K, Gyoeva +3 more
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Biosensing of opioids using frog melanophores
Biosensors and Bioelectronics, 2002Spectacular color changes of fishes, frogs and other lower vertebrates are due to the motile activities of specialized pigment containing cells. Pigment cells are interesting for biosensing purposes since they provide an easily monitored physiological phenomenon.
Annika M, Karlsson +6 more
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Exogenous melatonin and melanophore development inXenopus
Experientia, 1978Xenopus larvae raised from stage 21 in melatonin solution and upon a dark background had fewer head melanophores at stage 48 than control animals not exposed to melatonin. Rearing larvae in melatonin solution seems to mimic rearing larvae on a light background.
P C, Baker, K M, Hoff, R E, Buda
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