Ontogeny of immunoreactive somatolactin, prolactin and growth hormone secretory cells in the developing pituitary gland of Cichlasoma dimerus (Teleostei, Perciformes)
Prolactin, growth hormone and somatolactin constitute a hormone family because they are structurally related and are secreted by acidophilic cells of different regions of the adenohypohyisis. In this work, we report the ontogeny of ir-prolactin, ir-growth hormone and ir-somatolactin cells in the dev...
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todo:paper_03402061_v204_n1_p461_Pandolfi2023-10-03T15:25:24Z Ontogeny of immunoreactive somatolactin, prolactin and growth hormone secretory cells in the developing pituitary gland of Cichlasoma dimerus (Teleostei, Perciformes) Pandolfi, M. Paz, D.A. Maggese, C. Ravaglia, M. Vissio, P. Adenohypophysis Development Fish Immunocytochemistry Pituitary hormones growth hormone hypophysis hormone prolactin somatolactin unclassified drug fish protein glycoprotein growth hormone hypophysis hormone prolactin somatolactin protein, fish adenohypophysis animal tissue article cytoarchitecture hypophysis immunocytochemistry immunoreactivity nonhuman ontogeny organogenesis Perciformes priority journal secretory cell adenohypophysis aging animal enzyme immunoassay fluorescent antibody technique growth, development and aging metabolism newborn physiology Animalia Cichlasoma Cichlidae Perciformes Teleostei Aging Animals Animals, Newborn Fish Proteins Fluorescent Antibody Technique, Indirect Glycoproteins Growth Hormone Immunoenzyme Techniques Perciformes Pituitary Gland, Anterior Pituitary Hormones Prolactin Prolactin, growth hormone and somatolactin constitute a hormone family because they are structurally related and are secreted by acidophilic cells of different regions of the adenohypohyisis. In this work, we report the ontogeny of ir-prolactin, ir-growth hormone and ir-somatolactin cells in the developing pituitary gland of the cichlid fish Cichlasoma dimerus (Teleostei; Perciformes). Antisera raised against fish pituitary hormones were used. In this species hatching occurs 54 hs after fertilization and the three different cell types were recognized two days later. The neurohypophysis was recognized on day 14 after hatching and in later stages it began to show the characteristic deep interdigitations of the adults. On day 42 (juvenile stage) the distribution of ir-PRL, ir-GH and ir-SL showed the pattern described for adults of this species. The ir-SL cells were not PAS-positive in larvae as they are in adults. This would suggest the presence of a nonglycosilated form of somatolactin in early stages of development which may coexist in adults with a glycosilated form. The appearence of these hormones so early in development suggest their importance in the survival of fish larvae but further studies focused on the ontogeny of hypothalamic factors that regulate their synthesis and secretion must be performed. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_03402061_v204_n1_p461_Pandolfi |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Adenohypophysis Development Fish Immunocytochemistry Pituitary hormones growth hormone hypophysis hormone prolactin somatolactin unclassified drug fish protein glycoprotein growth hormone hypophysis hormone prolactin somatolactin protein, fish adenohypophysis animal tissue article cytoarchitecture hypophysis immunocytochemistry immunoreactivity nonhuman ontogeny organogenesis Perciformes priority journal secretory cell adenohypophysis aging animal enzyme immunoassay fluorescent antibody technique growth, development and aging metabolism newborn physiology Animalia Cichlasoma Cichlidae Perciformes Teleostei Aging Animals Animals, Newborn Fish Proteins Fluorescent Antibody Technique, Indirect Glycoproteins Growth Hormone Immunoenzyme Techniques Perciformes Pituitary Gland, Anterior Pituitary Hormones Prolactin |
| spellingShingle |
Adenohypophysis Development Fish Immunocytochemistry Pituitary hormones growth hormone hypophysis hormone prolactin somatolactin unclassified drug fish protein glycoprotein growth hormone hypophysis hormone prolactin somatolactin protein, fish adenohypophysis animal tissue article cytoarchitecture hypophysis immunocytochemistry immunoreactivity nonhuman ontogeny organogenesis Perciformes priority journal secretory cell adenohypophysis aging animal enzyme immunoassay fluorescent antibody technique growth, development and aging metabolism newborn physiology Animalia Cichlasoma Cichlidae Perciformes Teleostei Aging Animals Animals, Newborn Fish Proteins Fluorescent Antibody Technique, Indirect Glycoproteins Growth Hormone Immunoenzyme Techniques Perciformes Pituitary Gland, Anterior Pituitary Hormones Prolactin Pandolfi, M. Paz, D.A. Maggese, C. Ravaglia, M. Vissio, P. Ontogeny of immunoreactive somatolactin, prolactin and growth hormone secretory cells in the developing pituitary gland of Cichlasoma dimerus (Teleostei, Perciformes) |
| topic_facet |
Adenohypophysis Development Fish Immunocytochemistry Pituitary hormones growth hormone hypophysis hormone prolactin somatolactin unclassified drug fish protein glycoprotein growth hormone hypophysis hormone prolactin somatolactin protein, fish adenohypophysis animal tissue article cytoarchitecture hypophysis immunocytochemistry immunoreactivity nonhuman ontogeny organogenesis Perciformes priority journal secretory cell adenohypophysis aging animal enzyme immunoassay fluorescent antibody technique growth, development and aging metabolism newborn physiology Animalia Cichlasoma Cichlidae Perciformes Teleostei Aging Animals Animals, Newborn Fish Proteins Fluorescent Antibody Technique, Indirect Glycoproteins Growth Hormone Immunoenzyme Techniques Perciformes Pituitary Gland, Anterior Pituitary Hormones Prolactin |
| description |
Prolactin, growth hormone and somatolactin constitute a hormone family because they are structurally related and are secreted by acidophilic cells of different regions of the adenohypohyisis. In this work, we report the ontogeny of ir-prolactin, ir-growth hormone and ir-somatolactin cells in the developing pituitary gland of the cichlid fish Cichlasoma dimerus (Teleostei; Perciformes). Antisera raised against fish pituitary hormones were used. In this species hatching occurs 54 hs after fertilization and the three different cell types were recognized two days later. The neurohypophysis was recognized on day 14 after hatching and in later stages it began to show the characteristic deep interdigitations of the adults. On day 42 (juvenile stage) the distribution of ir-PRL, ir-GH and ir-SL showed the pattern described for adults of this species. The ir-SL cells were not PAS-positive in larvae as they are in adults. This would suggest the presence of a nonglycosilated form of somatolactin in early stages of development which may coexist in adults with a glycosilated form. The appearence of these hormones so early in development suggest their importance in the survival of fish larvae but further studies focused on the ontogeny of hypothalamic factors that regulate their synthesis and secretion must be performed. |
| format |
JOUR |
| author |
Pandolfi, M. Paz, D.A. Maggese, C. Ravaglia, M. Vissio, P. |
| author_facet |
Pandolfi, M. Paz, D.A. Maggese, C. Ravaglia, M. Vissio, P. |
| author_sort |
Pandolfi, M. |
| title |
Ontogeny of immunoreactive somatolactin, prolactin and growth hormone secretory cells in the developing pituitary gland of Cichlasoma dimerus (Teleostei, Perciformes) |
| title_short |
Ontogeny of immunoreactive somatolactin, prolactin and growth hormone secretory cells in the developing pituitary gland of Cichlasoma dimerus (Teleostei, Perciformes) |
| title_full |
Ontogeny of immunoreactive somatolactin, prolactin and growth hormone secretory cells in the developing pituitary gland of Cichlasoma dimerus (Teleostei, Perciformes) |
| title_fullStr |
Ontogeny of immunoreactive somatolactin, prolactin and growth hormone secretory cells in the developing pituitary gland of Cichlasoma dimerus (Teleostei, Perciformes) |
| title_full_unstemmed |
Ontogeny of immunoreactive somatolactin, prolactin and growth hormone secretory cells in the developing pituitary gland of Cichlasoma dimerus (Teleostei, Perciformes) |
| title_sort |
ontogeny of immunoreactive somatolactin, prolactin and growth hormone secretory cells in the developing pituitary gland of cichlasoma dimerus (teleostei, perciformes) |
| url |
http://hdl.handle.net/20.500.12110/paper_03402061_v204_n1_p461_Pandolfi |
| work_keys_str_mv |
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| _version_ |
1807318822010486784 |