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dc.contributor.authorLarson, B. A.en_US
dc.contributor.authorMadani, Z.en_US
dc.date.accessioned2012-01-24T17:49:23Z
dc.date.available2012-01-24T17:49:23Z
dc.date.issued1991-09en_US
dc.identifier1936919en_US
dc.identifier0370735en_US
dc.identifier.citationGeneral and comparative endocrinology. 1991 Sep; 83(3): 379-87.en_US
dc.identifier.issn0016-6480en_US
dc.identifier.urihttp://dx.doi.org/10.1016/0016-6480(91)90143-T
dc.identifier.urihttp://hdl.handle.net/10057/4163
dc.descriptionClick on the DOI link below to access the article (may not be free).en_US
dc.description.abstractThe function of the fish caudal neurosecretory system is uncertain, but a role in osmoregulation has been suggested by many investigators. Our objective was to determine if acclimation to water of different salinity has an effect on immunoreactive patterns and staining intensities of the two caudal neuropeptides, urotensins I (UI) and II (UII), in Gillichthys mirabilis. Five fish, originally maintained in seawater, were transferred to deionized fresh water (FW), and five were transferred to new seawater (SW). After 24 hr spinal cords were removed and fixed, FW and SW spinal cords were paired in blocks to receive identical treatment, and cryostat sections were double immunostained for both peptides using a double sequential immunofluorescence procedure. FW spinal cord exhibited increased staining intensities for both UI and UII in their urophyses (the neurohemal organ) compared to the SW spinal cords. The magnitude of intensity difference appeared greater for UI than for UII. In addition, the FW urophyses had more loci displaying intense, perivascular UI immunoreactivity than the SW urophyses. Thus, it appears that environmental salinity has an effect on the urophysial content of UI and UII in this euryhaline fish. The increased immunoreactivity in FW fish could reflect increased synthesis and storage, decreased release of the stored peptides, or decreased peptide degradation.en_US
dc.language.isoengen_US
dc.publisherAcademic Pressen_US
dc.relation.ispartofseriesGeneral and comparative endocrinologyen_US
dc.sourceNLMen_US
dc.subjectComparative Studyen_US
dc.subjectResearch Support, Non-U.S. Gov'ten_US
dc.subject.meshAdaptation, Physiologicalen_US
dc.subject.meshAnimalsen_US
dc.subject.meshFemaleen_US
dc.subject.meshFishes/physiologyen_US
dc.subject.meshFresh Wateren_US
dc.subject.meshImmunoenzyme Techniquesen_US
dc.subject.meshMaleen_US
dc.subject.meshNeurons/metabolismen_US
dc.subject.meshSeawateren_US
dc.subject.meshSpinal Cord/anatomy & histologyen_US
dc.subject.meshUrotensins/analysisen_US
dc.subject.meshSpinal Cord/metabolismen_US
dc.titleIncreased urotensin I and II immunoreactivity in the urophysis of Gillichthys mirabilis transferred to low salinity wateren_US
dc.typeArticleen_US
dc.description.versionpeer revieweden_US
dc.rights.holderCopyright © 1991, Elsevieren_US


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