Results 111 to 120 of about 475 (138)
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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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Epidermal xanthophores in a salamander
Canadian Journal of Zoology, 1973Non-melanophore pigment cells are generally restricted to the dermis. In contrast, the xanthophores, forming the dorsal yellow stripe of the long-toed salamander, Ambystoma macrodactylum, are located within the epidermis. They are underlain by dermal iridophores and melanophores.
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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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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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[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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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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Journal of Ultrastructure Research, 1971
Structural changes in pterinosomes found in xanthophores were studied electron microscopically using 5, 6, 7, 8, and 9 mm-long stages of larvae of Oryzias latipes. Herein designated types G-1 to G-5 pterinosomes appeared most abundantly, corresponding to the respective stage in the above sequence. They were round or ellipsoidal.
I, Kamei-Takeuchi, T, Hama
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Structural changes in pterinosomes found in xanthophores were studied electron microscopically using 5, 6, 7, 8, and 9 mm-long stages of larvae of Oryzias latipes. Herein designated types G-1 to G-5 pterinosomes appeared most abundantly, corresponding to the respective stage in the above sequence. They were round or ellipsoidal.
I, Kamei-Takeuchi, T, Hama
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Transformation of amphibian xanthophores into melanophores in clonal culture
Journal of Experimental Zoology, 1978AbstractXanthophores isolated from bullfrog tadpoles were successfully cloned. The rapid disappearance of the yellow pigment‐containing organelles (pterinosomes) occurred in proliferating xanthophores and many black granules were newly synthesized in the cells. The granules were electronmicroscopically identified as melanin granules.
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ACTH-induced internalization of plasma membrane in xanthophores of the goldfish, Carassiusauratus L
Biochemical and Biophysical Research Communications, 1979Abstract The ACTH-induced pigment dispersion in primary cultures and in suspensions of xanthophores of the goldfish, Carassius auratus L., has been shown to include the formation of rosette-like membranous structures and plasma membrane invaginations (pits).
S J, Lo, T T, Tchen, J D, Taylor
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Pigment Cell 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 ...
Sylvie, Le Guyader, Suresh, Jesuthasan
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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 ...
Sylvie, Le Guyader, Suresh, Jesuthasan
openaire +2 more sources