Effects of Prolactins on the Chromatophores of the Tilapia, Oreochromis niloticus
Using isolated scales and split-fin preparations of the tilapia Oreochromis niloticus, the effects of a pair of prolactins of the tilapia Oreochromis mossambicus (tPRL 177 and tPRL 188) and of ovine prolactin (oPRL) on chromatophores were studied in vitro. These peptides caused melanosome aggregatio...
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Veröffentlicht in: | General and comparative endocrinology 1993-12, Vol.92 (3), p.355-365 |
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creator | Kitta, Kumiko Makino, Mihoko Oshima, Noriko Bern, Howard A. |
description | Using isolated scales and split-fin preparations of the tilapia Oreochromis niloticus, the effects of a pair of prolactins of the tilapia Oreochromis mossambicus (tPRL
177 and tPRL
188) and of ovine prolactin (oPRL) on chromatophores were studied in vitro. These peptides caused melanosome aggregation and dispersion of xanthosomes, especially in the split preparations. Their relative effectiveness was as follows: tPRL
177 > oPRL > tPRL
188. Moreover, tPRL
177 at 100 n
M induced a high level of pigment dispersion in cultured xanthophores and erythrophores, but tPRL
188 at the same concentration did not have this effect. We also examined the responses of chromatophores to oPRL in primary cell culture and found that xanthophores and erythrophores respond to the peptide by pigment dispersion in a dose-dependent manner, whereas cultured melanophores showed little aggregation of pigment. In denervated melanophores in the split-fin preparations, tPRL
177 failed to induce aggregation of pigment. From these results, it was concluded that prolactin affects brightly pigmented cells of the tilapia directly, but affects melanophores indirectly. Norepinephrine which might leak from varicosities of chromatic nerve fibers by virtue of the action of prolactin molecules may be responsible for melanosome aggregation. |
doi_str_mv | 10.1006/gcen.1993.1173 |
format | Article |
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177 and tPRL
188) and of ovine prolactin (oPRL) on chromatophores were studied in vitro. These peptides caused melanosome aggregation and dispersion of xanthosomes, especially in the split preparations. Their relative effectiveness was as follows: tPRL
177 > oPRL > tPRL
188. Moreover, tPRL
177 at 100 n
M induced a high level of pigment dispersion in cultured xanthophores and erythrophores, but tPRL
188 at the same concentration did not have this effect. We also examined the responses of chromatophores to oPRL in primary cell culture and found that xanthophores and erythrophores respond to the peptide by pigment dispersion in a dose-dependent manner, whereas cultured melanophores showed little aggregation of pigment. In denervated melanophores in the split-fin preparations, tPRL
177 failed to induce aggregation of pigment. From these results, it was concluded that prolactin affects brightly pigmented cells of the tilapia directly, but affects melanophores indirectly. Norepinephrine which might leak from varicosities of chromatic nerve fibers by virtue of the action of prolactin molecules may be responsible for melanosome aggregation.</description><identifier>ISSN: 0016-6480</identifier><identifier>EISSN: 1095-6840</identifier><identifier>DOI: 10.1006/gcen.1993.1173</identifier><identifier>PMID: 8138103</identifier><identifier>CODEN: GCENA5</identifier><language>eng</language><publisher>San Diego, CA: Elsevier Inc</publisher><subject>Animals ; Biological and medical sciences ; Cells, Cultured ; Female ; Fundamental and applied biological sciences. Psychology ; Male ; Melanophores - drug effects ; Prolactin - pharmacology ; Tilapia ; Vertebrates: skin, associated glands, phaneres, light organs, various exocrine glands (salt gland, uropygial gland...), adipose tissue, connective tissue</subject><ispartof>General and comparative endocrinology, 1993-12, Vol.92 (3), p.355-365</ispartof><rights>1993 Academic Press</rights><rights>1994 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c463t-7eae55df3800db48a091c0a31f1385888f3ae539fda9b286f8d53f4db2799add3</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1006/gcen.1993.1173$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=3856883$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/8138103$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Kitta, Kumiko</creatorcontrib><creatorcontrib>Makino, Mihoko</creatorcontrib><creatorcontrib>Oshima, Noriko</creatorcontrib><creatorcontrib>Bern, Howard A.</creatorcontrib><title>Effects of Prolactins on the Chromatophores of the Tilapia, Oreochromis niloticus</title><title>General and comparative endocrinology</title><addtitle>Gen Comp Endocrinol</addtitle><description>Using isolated scales and split-fin preparations of the tilapia Oreochromis niloticus, the effects of a pair of prolactins of the tilapia Oreochromis mossambicus (tPRL
177 and tPRL
188) and of ovine prolactin (oPRL) on chromatophores were studied in vitro. These peptides caused melanosome aggregation and dispersion of xanthosomes, especially in the split preparations. Their relative effectiveness was as follows: tPRL
177 > oPRL > tPRL
188. Moreover, tPRL
177 at 100 n
M induced a high level of pigment dispersion in cultured xanthophores and erythrophores, but tPRL
188 at the same concentration did not have this effect. We also examined the responses of chromatophores to oPRL in primary cell culture and found that xanthophores and erythrophores respond to the peptide by pigment dispersion in a dose-dependent manner, whereas cultured melanophores showed little aggregation of pigment. In denervated melanophores in the split-fin preparations, tPRL
177 failed to induce aggregation of pigment. From these results, it was concluded that prolactin affects brightly pigmented cells of the tilapia directly, but affects melanophores indirectly. Norepinephrine which might leak from varicosities of chromatic nerve fibers by virtue of the action of prolactin molecules may be responsible for melanosome aggregation.</description><subject>Animals</subject><subject>Biological and medical sciences</subject><subject>Cells, Cultured</subject><subject>Female</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Male</subject><subject>Melanophores - drug effects</subject><subject>Prolactin - pharmacology</subject><subject>Tilapia</subject><subject>Vertebrates: skin, associated glands, phaneres, light organs, various exocrine glands (salt gland, uropygial gland...), adipose tissue, connective tissue</subject><issn>0016-6480</issn><issn>1095-6840</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1993</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp1kE1LAzEQhoMotX5cvQl7EE9unTS72eQopX6AoIKeQ5pMbGS7qclW8N-btcWbp2FmnhleHkLOKEwoAL9-N9hNqJRsQmnD9siYgqxLLirYJ2MAykteCTgkRyl9AEDNOB2RkaBMUGBj8jJ3Dk2fiuCK5xhabXrf5a4r-iUWs2UMK92H9TJE_GWG6atv9drrq-IpYjAD4lPR-Tb03mzSCTlwuk14uqvH5O12_jq7Lx-f7h5mN4-lqTjrywY11rV1TADYRSU0SGpAM-pytFoI4VgGmHRWy8VUcCdszVxlF9NGSm0tOyaX27_rGD43mHqVYxhsW91h2CTV8GktQDYZnGxBE0NKEZ1aR7_S8VtRUINDNThUg0M1OMwH57vPm8UK7R--k5b3F7u9Tka3LurO-PSH5fhciAETWwyzhS-PUSXjsTNofczKlQ3-vwQ_QZmNcg</recordid><startdate>19931201</startdate><enddate>19931201</enddate><creator>Kitta, Kumiko</creator><creator>Makino, Mihoko</creator><creator>Oshima, Noriko</creator><creator>Bern, Howard A.</creator><general>Elsevier Inc</general><general>Elsevier</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>19931201</creationdate><title>Effects of Prolactins on the Chromatophores of the Tilapia, Oreochromis niloticus</title><author>Kitta, Kumiko ; Makino, Mihoko ; Oshima, Noriko ; Bern, Howard A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c463t-7eae55df3800db48a091c0a31f1385888f3ae539fda9b286f8d53f4db2799add3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1993</creationdate><topic>Animals</topic><topic>Biological and medical sciences</topic><topic>Cells, Cultured</topic><topic>Female</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Male</topic><topic>Melanophores - drug effects</topic><topic>Prolactin - pharmacology</topic><topic>Tilapia</topic><topic>Vertebrates: skin, associated glands, phaneres, light organs, various exocrine glands (salt gland, uropygial gland...), adipose tissue, connective tissue</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kitta, Kumiko</creatorcontrib><creatorcontrib>Makino, Mihoko</creatorcontrib><creatorcontrib>Oshima, Noriko</creatorcontrib><creatorcontrib>Bern, Howard A.</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>General and comparative endocrinology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kitta, Kumiko</au><au>Makino, Mihoko</au><au>Oshima, Noriko</au><au>Bern, Howard A.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effects of Prolactins on the Chromatophores of the Tilapia, Oreochromis niloticus</atitle><jtitle>General and comparative endocrinology</jtitle><addtitle>Gen Comp Endocrinol</addtitle><date>1993-12-01</date><risdate>1993</risdate><volume>92</volume><issue>3</issue><spage>355</spage><epage>365</epage><pages>355-365</pages><issn>0016-6480</issn><eissn>1095-6840</eissn><coden>GCENA5</coden><abstract>Using isolated scales and split-fin preparations of the tilapia Oreochromis niloticus, the effects of a pair of prolactins of the tilapia Oreochromis mossambicus (tPRL
177 and tPRL
188) and of ovine prolactin (oPRL) on chromatophores were studied in vitro. These peptides caused melanosome aggregation and dispersion of xanthosomes, especially in the split preparations. Their relative effectiveness was as follows: tPRL
177 > oPRL > tPRL
188. Moreover, tPRL
177 at 100 n
M induced a high level of pigment dispersion in cultured xanthophores and erythrophores, but tPRL
188 at the same concentration did not have this effect. We also examined the responses of chromatophores to oPRL in primary cell culture and found that xanthophores and erythrophores respond to the peptide by pigment dispersion in a dose-dependent manner, whereas cultured melanophores showed little aggregation of pigment. In denervated melanophores in the split-fin preparations, tPRL
177 failed to induce aggregation of pigment. From these results, it was concluded that prolactin affects brightly pigmented cells of the tilapia directly, but affects melanophores indirectly. Norepinephrine which might leak from varicosities of chromatic nerve fibers by virtue of the action of prolactin molecules may be responsible for melanosome aggregation.</abstract><cop>San Diego, CA</cop><pub>Elsevier Inc</pub><pmid>8138103</pmid><doi>10.1006/gcen.1993.1173</doi><tpages>11</tpages></addata></record> |
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source | MEDLINE; Elsevier ScienceDirect Journals Complete |
subjects | Animals Biological and medical sciences Cells, Cultured Female Fundamental and applied biological sciences. Psychology Male Melanophores - drug effects Prolactin - pharmacology Tilapia Vertebrates: skin, associated glands, phaneres, light organs, various exocrine glands (salt gland, uropygial gland...), adipose tissue, connective tissue |
title | Effects of Prolactins on the Chromatophores of the Tilapia, Oreochromis niloticus |
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