Gonadotropins and Growth Hormone Family Characterization in an Endangered Siluriform Species, Steindachneridion parahybae (Pimelodidae): Relationship With Annual Reproductive Cycle and Induced Spawning in Captivity
ABSTRACT The aim of this study was to identify and characterize pituitary cells of Steindachneridion parahybae females in captivity, highlighting the possible relationship with reproductive disorders at this level, since this species shows oocyte final maturation, ovulation and spawning dysfunction...
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| Veröffentlicht in: | Anatomical record (Hoboken, N.J. : 2007) N.J. : 2007), 2015-09, Vol.298 (9), p.1644-1658 |
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| creator | Honji, Renato Massaaki Caneppele, Danilo Pandolfi, Matias Lo Nostro, Fabiana Laura Moreira, Renata Guimarães |
| description | ABSTRACT
The aim of this study was to identify and characterize pituitary cells of Steindachneridion parahybae females in captivity, highlighting the possible relationship with reproductive disorders at this level, since this species shows oocyte final maturation, ovulation and spawning dysfunction in captivity. The localization and distribution of growth hormone (GH), prolactin (PRL), somatolactin (SL), β‐luteinizing hormone (β‐LH), and β‐follicle stimulating hormone (β‐FSH) immunoreactive (‐ir) cells in the adenohypophysis was studied by immunohistochemical and Western blot methods. In addition, cellular morphometric analyses and semi‐quantification of ir‐cells optical density (OD) during the annual reproductive cycle and after artificial induced spawning (AIS) were performed. Results showed that the distribution and general localization of pituitary cell types were similar to that of other teleost species. However, the morphometrical study of adenohypophysial cells showed differences along the reproductive cycle and following AIS. In general, females at the vitellogenic stage presented greater OD values for GH, PRL and SL than at other maturation stages (previtellogenic and regression stages), probably indicating an increased cellular activity during this stage. Conversely, β‐LH OD did not vary during the annual reproductive cycle. After AIS, β‐LH, SL and GH ir‐cells showed an increase in OD values suggesting a possible involvement on oocyte final maturation, ovulation and spawning or a feedback control on the brain‐pituitary‐gonads axis. Reproductive dysfunction in S. parahybae females in captivity may be due to alteration of the synthesis pathways of β‐LH. In addition, GH family of hormones could modulate associated mechanisms that influence the reproductive status in this species. Anat Rec, 298:1644–1658, 2015. © 2015 Wiley Periodicals, Inc. |
| doi_str_mv | 10.1002/ar.23174 |
| format | Article |
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The aim of this study was to identify and characterize pituitary cells of Steindachneridion parahybae females in captivity, highlighting the possible relationship with reproductive disorders at this level, since this species shows oocyte final maturation, ovulation and spawning dysfunction in captivity. The localization and distribution of growth hormone (GH), prolactin (PRL), somatolactin (SL), β‐luteinizing hormone (β‐LH), and β‐follicle stimulating hormone (β‐FSH) immunoreactive (‐ir) cells in the adenohypophysis was studied by immunohistochemical and Western blot methods. In addition, cellular morphometric analyses and semi‐quantification of ir‐cells optical density (OD) during the annual reproductive cycle and after artificial induced spawning (AIS) were performed. Results showed that the distribution and general localization of pituitary cell types were similar to that of other teleost species. However, the morphometrical study of adenohypophysial cells showed differences along the reproductive cycle and following AIS. In general, females at the vitellogenic stage presented greater OD values for GH, PRL and SL than at other maturation stages (previtellogenic and regression stages), probably indicating an increased cellular activity during this stage. Conversely, β‐LH OD did not vary during the annual reproductive cycle. After AIS, β‐LH, SL and GH ir‐cells showed an increase in OD values suggesting a possible involvement on oocyte final maturation, ovulation and spawning or a feedback control on the brain‐pituitary‐gonads axis. Reproductive dysfunction in S. parahybae females in captivity may be due to alteration of the synthesis pathways of β‐LH. In addition, GH family of hormones could modulate associated mechanisms that influence the reproductive status in this species. Anat Rec, 298:1644–1658, 2015. © 2015 Wiley Periodicals, Inc.</description><identifier>ISSN: 1932-8486</identifier><identifier>EISSN: 1932-8494</identifier><identifier>DOI: 10.1002/ar.23174</identifier><identifier>PMID: 25989288</identifier><language>eng</language><publisher>United States: Wiley Subscription Services, Inc</publisher><subject>Animals ; Blotting, Western ; Catfishes - classification ; Catfishes - embryology ; Catfishes - metabolism ; Embryo, Nonmammalian - metabolism ; Endangered Species ; Female ; Fish Proteins - metabolism ; follicle stimulating hormone ; Gonadotropins - metabolism ; growth hormone ; Growth Hormone - metabolism ; Immunohistochemistry ; luteinizing hormone ; Oocytes - metabolism ; Pimelodidae ; Pituitary Gland - cytology ; Pituitary Gland - metabolism ; prolactin hormone ; Reproduction ; reproductive dysfunction ; somatolactin hormone ; Steindachneridion ; Teleostei ; Vitellogenesis</subject><ispartof>Anatomical record (Hoboken, N.J. : 2007), 2015-09, Vol.298 (9), p.1644-1658</ispartof><rights>2015 Wiley Periodicals, Inc.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4864-7412c3ba9e9cc9bb74d725510f80ae899d683c6d9bfede9792f2f89e573aeeb33</citedby><cites>FETCH-LOGICAL-c4864-7412c3ba9e9cc9bb74d725510f80ae899d683c6d9bfede9792f2f89e573aeeb33</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Far.23174$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Far.23174$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,776,780,1411,1427,27901,27902,45550,45551,46384,46808</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/25989288$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Honji, Renato Massaaki</creatorcontrib><creatorcontrib>Caneppele, Danilo</creatorcontrib><creatorcontrib>Pandolfi, Matias</creatorcontrib><creatorcontrib>Lo Nostro, Fabiana Laura</creatorcontrib><creatorcontrib>Moreira, Renata Guimarães</creatorcontrib><title>Gonadotropins and Growth Hormone Family Characterization in an Endangered Siluriform Species, Steindachneridion parahybae (Pimelodidae): Relationship With Annual Reproductive Cycle and Induced Spawning in Captivity</title><title>Anatomical record (Hoboken, N.J. : 2007)</title><addtitle>Anat Rec (Hoboken)</addtitle><description>ABSTRACT
The aim of this study was to identify and characterize pituitary cells of Steindachneridion parahybae females in captivity, highlighting the possible relationship with reproductive disorders at this level, since this species shows oocyte final maturation, ovulation and spawning dysfunction in captivity. The localization and distribution of growth hormone (GH), prolactin (PRL), somatolactin (SL), β‐luteinizing hormone (β‐LH), and β‐follicle stimulating hormone (β‐FSH) immunoreactive (‐ir) cells in the adenohypophysis was studied by immunohistochemical and Western blot methods. In addition, cellular morphometric analyses and semi‐quantification of ir‐cells optical density (OD) during the annual reproductive cycle and after artificial induced spawning (AIS) were performed. Results showed that the distribution and general localization of pituitary cell types were similar to that of other teleost species. However, the morphometrical study of adenohypophysial cells showed differences along the reproductive cycle and following AIS. In general, females at the vitellogenic stage presented greater OD values for GH, PRL and SL than at other maturation stages (previtellogenic and regression stages), probably indicating an increased cellular activity during this stage. Conversely, β‐LH OD did not vary during the annual reproductive cycle. After AIS, β‐LH, SL and GH ir‐cells showed an increase in OD values suggesting a possible involvement on oocyte final maturation, ovulation and spawning or a feedback control on the brain‐pituitary‐gonads axis. Reproductive dysfunction in S. parahybae females in captivity may be due to alteration of the synthesis pathways of β‐LH. In addition, GH family of hormones could modulate associated mechanisms that influence the reproductive status in this species. Anat Rec, 298:1644–1658, 2015. © 2015 Wiley Periodicals, Inc.</description><subject>Animals</subject><subject>Blotting, Western</subject><subject>Catfishes - classification</subject><subject>Catfishes - embryology</subject><subject>Catfishes - metabolism</subject><subject>Embryo, Nonmammalian - metabolism</subject><subject>Endangered Species</subject><subject>Female</subject><subject>Fish Proteins - metabolism</subject><subject>follicle stimulating hormone</subject><subject>Gonadotropins - metabolism</subject><subject>growth hormone</subject><subject>Growth Hormone - metabolism</subject><subject>Immunohistochemistry</subject><subject>luteinizing hormone</subject><subject>Oocytes - metabolism</subject><subject>Pimelodidae</subject><subject>Pituitary Gland - cytology</subject><subject>Pituitary Gland - metabolism</subject><subject>prolactin hormone</subject><subject>Reproduction</subject><subject>reproductive dysfunction</subject><subject>somatolactin hormone</subject><subject>Steindachneridion</subject><subject>Teleostei</subject><subject>Vitellogenesis</subject><issn>1932-8486</issn><issn>1932-8494</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqNkt9qFDEUhwdRbK2CTyABbyo4Ncn8S7xbhnZbKChdxcshk5zppGSSaTLjMj6oz2N2t1YQBK8Sku98-SU5SfKa4DOCMf0g_BnNSJU_SY4Jz2jKcp4_fZyz8ih5EcIdxkWOefY8OaIFZ5wydpz8XDsrlJu8G7UNSFiF1t5tpx5dOj84C-hCDNosqO6FF3ICr3-ISTuLtI00OrdK2FvwoNBGm9nrLpahzQhSQ3iPNhPoSMjexkK1Kxujpl9aAej0sx7AOKWVgHcf0Q2YvTj0ekTfdEywsnYWJm6M3qlZTvo7oHqRBvYxr2xc2x07iq3V9nYXqBZjpPS0vEyedcIEePUwniRfL86_1Jfp9af1Vb26TmV8lTytckJl1goOXEretlWuKloUBHcMC2Ccq5JlslS87UABrzjtaMc4FFUmANosO0lOD94Y8X6GMDWDDhKMERbcHBpSEVqVjJH_QXFWxe-hRUTf_oXeudnbeJE9RWhJi_KPUHoXgoeuGb0ehF8agptdWzTCN_u2iOibB-HcDqAewd99EIH0AGy1geWfomZ1cxD-ApWZxLg</recordid><startdate>201509</startdate><enddate>201509</enddate><creator>Honji, Renato Massaaki</creator><creator>Caneppele, Danilo</creator><creator>Pandolfi, Matias</creator><creator>Lo Nostro, Fabiana Laura</creator><creator>Moreira, Renata Guimarães</creator><general>Wiley Subscription Services, Inc</general><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>7QP</scope><scope>7QR</scope><scope>7TK</scope><scope>7TS</scope><scope>8FD</scope><scope>FR3</scope><scope>K9.</scope><scope>P64</scope><scope>RC3</scope><scope>7X8</scope><scope>F1W</scope><scope>H95</scope><scope>L.G</scope></search><sort><creationdate>201509</creationdate><title>Gonadotropins and Growth Hormone Family Characterization in an Endangered Siluriform Species, Steindachneridion parahybae (Pimelodidae): Relationship With Annual Reproductive Cycle and Induced Spawning in Captivity</title><author>Honji, Renato Massaaki ; 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The aim of this study was to identify and characterize pituitary cells of Steindachneridion parahybae females in captivity, highlighting the possible relationship with reproductive disorders at this level, since this species shows oocyte final maturation, ovulation and spawning dysfunction in captivity. The localization and distribution of growth hormone (GH), prolactin (PRL), somatolactin (SL), β‐luteinizing hormone (β‐LH), and β‐follicle stimulating hormone (β‐FSH) immunoreactive (‐ir) cells in the adenohypophysis was studied by immunohistochemical and Western blot methods. In addition, cellular morphometric analyses and semi‐quantification of ir‐cells optical density (OD) during the annual reproductive cycle and after artificial induced spawning (AIS) were performed. Results showed that the distribution and general localization of pituitary cell types were similar to that of other teleost species. However, the morphometrical study of adenohypophysial cells showed differences along the reproductive cycle and following AIS. In general, females at the vitellogenic stage presented greater OD values for GH, PRL and SL than at other maturation stages (previtellogenic and regression stages), probably indicating an increased cellular activity during this stage. Conversely, β‐LH OD did not vary during the annual reproductive cycle. After AIS, β‐LH, SL and GH ir‐cells showed an increase in OD values suggesting a possible involvement on oocyte final maturation, ovulation and spawning or a feedback control on the brain‐pituitary‐gonads axis. Reproductive dysfunction in S. parahybae females in captivity may be due to alteration of the synthesis pathways of β‐LH. In addition, GH family of hormones could modulate associated mechanisms that influence the reproductive status in this species. Anat Rec, 298:1644–1658, 2015. © 2015 Wiley Periodicals, Inc.</abstract><cop>United States</cop><pub>Wiley Subscription Services, Inc</pub><pmid>25989288</pmid><doi>10.1002/ar.23174</doi><tpages>15</tpages><oa>free_for_read</oa></addata></record> |
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| ispartof | Anatomical record (Hoboken, N.J. : 2007), 2015-09, Vol.298 (9), p.1644-1658 |
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| source | MEDLINE; Wiley Online Library Journals Frontfile Complete; Wiley Online Library Free Content |
| subjects | Animals Blotting, Western Catfishes - classification Catfishes - embryology Catfishes - metabolism Embryo, Nonmammalian - metabolism Endangered Species Female Fish Proteins - metabolism follicle stimulating hormone Gonadotropins - metabolism growth hormone Growth Hormone - metabolism Immunohistochemistry luteinizing hormone Oocytes - metabolism Pimelodidae Pituitary Gland - cytology Pituitary Gland - metabolism prolactin hormone Reproduction reproductive dysfunction somatolactin hormone Steindachneridion Teleostei Vitellogenesis |
| title | Gonadotropins and Growth Hormone Family Characterization in an Endangered Siluriform Species, Steindachneridion parahybae (Pimelodidae): Relationship With Annual Reproductive Cycle and Induced Spawning in Captivity |
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