A comparative analysis of somatolactin-related immunoreactivity in the pituitaries of four neopterygian fishes and one chondrostean fish: an immunohistochemical study.
Identifieur interne : 001927 ( Main/Exploration ); précédent : 001926; suivant : 001928A comparative analysis of somatolactin-related immunoreactivity in the pituitaries of four neopterygian fishes and one chondrostean fish: an immunohistochemical study.
Auteurs : R M Dores [États-Unis] ; N E Hoffman ; T. Chilcutt-Ruth ; A. Lancha ; C. Brown ; L. Marra ; J. YousonSource :
- General and comparative endocrinology [ 0016-6480 ] ; 1996.
English descriptors
- KwdEn :
- MESH :
- chemical , analysis : Glycoproteins, Pituitary Hormones.
- chemical : Fish Proteins.
- chemistry : Pituitary Gland.
- metabolism : Fishes.
- Animals, Female, Immunohistochemistry, Male.
Abstract
An antiserum to cod somatolactin (SL) was used for immunohistochemical screening for the pars intermedia of two teleosts (Oreochromis mossambicus and Gymothorax meleagris), two holostean fishes (Lepisosteus osseus and Amia calva), and a chondrostean fish (Acipenser fulvescens) for SL-immunopositive (SL-IR) cells. As expected, a subset of the epithelial cells in the pars intermedia of O. mossambicus (tilapia) was immunopositive for SL, and the remainder of the epithelial cells was immunopositive for alpha-MSH-specific antiserum (alpha-MSH-IR). SL-IR was not detected in any of the epithelial cells in the pars intermedia of the moray eel G. meleagris. To determine whether SL-IR could be detected in nonteleost fishes, immunohistochemical analyses were done on the pituitaries of two holostean fishes and one chondrostean fish. In the pars intermedia of the gar, L. osseus, a subset of cells was immunopositive for alpha-MSH only. However, in the pars intermedia of the bowfin, A. calva, all of the epithelial cells indicated the presence of both SL and alpha-MSH. Finally, no SL-positive cells were detected in the pars intermedia of the sturgeon, A. fulvescens.
DOI: 10.1006/gcen.1996.0049
PubMed: 8860312
Affiliations:
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Le document en format XML
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<term>Immunohistochemistry</term>
<term>Male</term>
<term>Pituitary Gland (chemistry)</term>
<term>Pituitary Hormones (analysis)</term>
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<front><div type="abstract" xml:lang="en">An antiserum to cod somatolactin (SL) was used for immunohistochemical screening for the pars intermedia of two teleosts (Oreochromis mossambicus and Gymothorax meleagris), two holostean fishes (Lepisosteus osseus and Amia calva), and a chondrostean fish (Acipenser fulvescens) for SL-immunopositive (SL-IR) cells. As expected, a subset of the epithelial cells in the pars intermedia of O. mossambicus (tilapia) was immunopositive for SL, and the remainder of the epithelial cells was immunopositive for alpha-MSH-specific antiserum (alpha-MSH-IR). SL-IR was not detected in any of the epithelial cells in the pars intermedia of the moray eel G. meleagris. To determine whether SL-IR could be detected in nonteleost fishes, immunohistochemical analyses were done on the pituitaries of two holostean fishes and one chondrostean fish. In the pars intermedia of the gar, L. osseus, a subset of cells was immunopositive for alpha-MSH only. However, in the pars intermedia of the bowfin, A. calva, all of the epithelial cells indicated the presence of both SL and alpha-MSH. Finally, no SL-positive cells were detected in the pars intermedia of the sturgeon, A. fulvescens.</div>
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<name sortKey="Youson, J" sort="Youson, J" uniqKey="Youson J" first="J" last="Youson">J. Youson</name>
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