Results 111 to 120 of about 502 (147)
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Cell Motility, 1989
AbstractThe cytoskeleton of goldfish xanthophores contains an abundance of unique dense structures (400 nm in diameter) that are absent in goldfish nonpigment cells and are probably remnants of pterinosomes. No major difference in protein composition between xanthophores and nonpigment cells (without these structures) was found that could account for ...
R E, Palazzo +4 more
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AbstractThe cytoskeleton of goldfish xanthophores contains an abundance of unique dense structures (400 nm in diameter) that are absent in goldfish nonpigment cells and are probably remnants of pterinosomes. No major difference in protein composition between xanthophores and nonpigment cells (without these structures) was found that could account for ...
R E, Palazzo +4 more
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Local reorganization of xanthophores fine-tunes and colors the striped pattern of zebrafish
Science, 2014Origin of fish pigment cell for pattern Zebrafish stripes arise from the interactions of pigment cells: black melanophores, iridescent iridophores, and yellow-orange xanthophores. Melanophores and iridophores develop from nerve-associated stem cells, but the origin of xanthophores is unclear.
Mahalwar, P. +3 more
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Pigment Cell & Melanoma Research, 2002
We have identified two simple methods to analyse xanthophore and pterinosome biogenesis in zebrafish. The first uses methylene blue (methylthionium chloride), a redox dye which specifically labels xanthophores and pterinosomes, while the second uses autofluorescence to detect pteridine levels; these methods may be used to detect the number, location ...
Suresh Jesuthasan
exaly +3 more sources
We have identified two simple methods to analyse xanthophore and pterinosome biogenesis in zebrafish. The first uses methylene blue (methylthionium chloride), a redox dye which specifically labels xanthophores and pterinosomes, while the second uses autofluorescence to detect pteridine levels; these methods may be used to detect the number, location ...
Suresh Jesuthasan
exaly +3 more sources
General and Comparative Endocrinology, 2010
alpha-Melanocyte-stimulating hormone (alpha-MSH) is a member of the melanocortin (MC) family, and the MC receptor (MCR) is a member of the G protein-coupled receptor (GPCR) superfamily. We previously found that in barfin flounder, a flatfish, alpha-MSH with an acetyl group at the N-terminus stimulated pigment dispersion in xanthophores; however, this ...
Yuki, Kobayashi +4 more
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alpha-Melanocyte-stimulating hormone (alpha-MSH) is a member of the melanocortin (MC) family, and the MC receptor (MCR) is a member of the G protein-coupled receptor (GPCR) superfamily. We previously found that in barfin flounder, a flatfish, alpha-MSH with an acetyl group at the N-terminus stimulated pigment dispersion in xanthophores; however, this ...
Yuki, Kobayashi +4 more
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Actin‐dependent carotenoid droplet dispersion in permeabilized cultured goldfish xanthophores
Cell Motility, 1990AbstractOrganelle translocations are essential cellular processes. Although much progress has been made with regards to microtubule‐dependent organelle translocations, little is known about actin‐dependent organelle translocation(s) except cytoplasmic streaming in Nitella.
F X, Yu, J D, Taylor, T T, Tchen
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Cell Motility, 1989
AbstractImmunofluorescence and phase‐contrast microscopic studies of goldfish xanthophores with aggregated or dispersed pigment show two unusual features. First, immunofluorescence studies with anti‐actin show punctate structures instead of filaments. These punctate structures are unique for the xanthophores and are absent from both goldfish dermal no ...
G R, Walker, J D, Taylor, T T, Tchen
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AbstractImmunofluorescence and phase‐contrast microscopic studies of goldfish xanthophores with aggregated or dispersed pigment show two unusual features. First, immunofluorescence studies with anti‐actin show punctate structures instead of filaments. These punctate structures are unique for the xanthophores and are absent from both goldfish dermal no ...
G R, Walker, J D, Taylor, T T, Tchen
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Journal of Ultrastructure Research, 1972
Structural changes in pterinosomes and behavior of cytoplasmic inclusions in the process of xanthophore differentiation were studied electron microscopically using Xenopus laevis . At the early stage of xanthophore development, type I pterinosomes with clear limiting membranes, inner amorphous materials, and fine-fibrous structures, well developed ...
Tadao Hama
exaly +3 more sources
Structural changes in pterinosomes and behavior of cytoplasmic inclusions in the process of xanthophore differentiation were studied electron microscopically using Xenopus laevis . At the early stage of xanthophore development, type I pterinosomes with clear limiting membranes, inner amorphous materials, and fine-fibrous structures, well developed ...
Tadao Hama
exaly +3 more sources
Light‐Induced Pigment Aggregation in Xanthophores of the Medaka, Oryzias latipes
Pigment Cell Research, 1998The response mechanism of medaka xanthophores to light was examined at the cellular level. Innervated and denervated xanthophores of adult medakas responded to light (9,000 lux) within 30 sec by pigment aggregation, and this aggregation was not mediated through α‐adrenoceptors on the cell membrane. Maximum sensitivity to light was at wavelengths of 410–
N, Oshima +3 more
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[5] Translocation of carotenoid droplets in goldfish xanthophores
1993Publisher Summary This chapter describes the isolation and maintenance of xanthophores, the preparation of a permeabilized system capable of carotenoid droplet dispersion, and the identification of carotenoid droplet protein p57/pp57 and a cytosolic protein anterogin as important determinants for carotenoid droplet dispersion. Two radically different
T.T. Tchen, John D. Taylor
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Microscopy Research and Technique, 2002
AbstractPigmentary organelle translocations within fish chromatophores undergo physiological color changes when exposed to external signals. Chromatophores can be isolated in high yields, and their pigmentary organelles can be tracked readily by microscopy.
Victoria A, Kimler, John D, Taylor
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AbstractPigmentary organelle translocations within fish chromatophores undergo physiological color changes when exposed to external signals. Chromatophores can be isolated in high yields, and their pigmentary organelles can be tracked readily by microscopy.
Victoria A, Kimler, John D, Taylor
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