Neurohypophysial Hormones Associated with Osmotic Challenges in the Brain and Pituitary of the Euryhaline Black Porgy, Acanthopagrus schlegelii

Our study showed differential expression of the arginine vasotocin (avt)/isotocin (it) in the brain and pituitary gland of the euryhaline black porgy (Acanthopagrus schlegelii) during osmotic stress. A dec...

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Autores principales:	Adimoolam Aruna, Chien-Ju Lin, Ganesan Nagarajan, Ching-Fong Chang
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	<i>arginine vasotocin</i> <i>isotocin</i> arginine vasotocin receptor isotocin receptor osmotic stress homeostasis Biology (General) QH301-705.5
Acceso en línea:	https://doaj.org/article/86758899254b4d5a9998a969416694f0
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spelling	oai:doaj.org-article:86758899254b4d5a9998a969416694f02021-11-25T17:11:21ZNeurohypophysial Hormones Associated with Osmotic Challenges in the Brain and Pituitary of the Euryhaline Black Porgy, <i>Acanthopagrus schlegelii</i>10.3390/cells101130862073-4409https://doaj.org/article/86758899254b4d5a9998a969416694f02021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4409/10/11/3086https://doaj.org/toc/2073-4409Our study showed differential expression of the <i>arginine vasotocin</i> (<i>avt</i>)/<i>isotocin</i> (<i>it</i>) in the brain and pituitary gland of the euryhaline black porgy (<i>Acanthopagrus schlegelii</i>) during osmotic stress. A decrease in serum osmolality and increased cortisol levels were observed after acute transfer from seawater (SW) to freshwater (FW). The increased expressions of <i>avt</i>, <i>avt receptor</i> (<i>avtr</i>: <i>v1a</i>), and <i>isotocin receptor</i> (<i>itr</i>: <i>itr1)</i> transcripts on day 1 and <i>it</i> and <i>itr</i> transcripts on days 7 and 30 were found in the brains and pituitary glands of FW fish. Increased levels of <i>avt</i> mRNA in the diencephalon and <i>avtr</i> mRNA in the pituitary together with serum cortisol on day 1 of FW exposure indicated activation of the hypothalamic–pituitary–interrenal (HPI) axis. The expression levels of <i>avtr</i> and <i>itr</i> after FW transfer were increased in the pituitary on days 7 and 30. Furthermore, <i>in situ</i> hybridization demonstrated spatially differential expression of <i>avt</i> and <i>itr</i> transcripts in nucleus preopticus parvocellularis of pars gigantocellularis (PMgc), magnocellularis (PMmc), and parvocellularis (PMpc) of the preoptic area (POA). Positive signals for <i>avt</i> and <i>it</i> were highly abundant in PMpc after FW exposure. The data suggest involvement of neurohypophysial hormones in the brain (telencephalon and diencephalon) and pituitary for osmotic stress.Adimoolam ArunaChien-Ju LinGanesan NagarajanChing-Fong ChangMDPI AGarticle<i>arginine vasotocin</i><i>isotocin</i>arginine vasotocin receptorisotocin receptorosmotic stresshomeostasisBiology (General)QH301-705.5ENCells, Vol 10, Iss 3086, p 3086 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	<i>arginine vasotocin</i> <i>isotocin</i> arginine vasotocin receptor isotocin receptor osmotic stress homeostasis Biology (General) QH301-705.5
spellingShingle	<i>arginine vasotocin</i> <i>isotocin</i> arginine vasotocin receptor isotocin receptor osmotic stress homeostasis Biology (General) QH301-705.5 Adimoolam Aruna Chien-Ju Lin Ganesan Nagarajan Ching-Fong Chang Neurohypophysial Hormones Associated with Osmotic Challenges in the Brain and Pituitary of the Euryhaline Black Porgy, <i>Acanthopagrus schlegelii</i>
description	Our study showed differential expression of the <i>arginine vasotocin</i> (<i>avt</i>)/<i>isotocin</i> (<i>it</i>) in the brain and pituitary gland of the euryhaline black porgy (<i>Acanthopagrus schlegelii</i>) during osmotic stress. A decrease in serum osmolality and increased cortisol levels were observed after acute transfer from seawater (SW) to freshwater (FW). The increased expressions of <i>avt</i>, <i>avt receptor</i> (<i>avtr</i>: <i>v1a</i>), and <i>isotocin receptor</i> (<i>itr</i>: <i>itr1)</i> transcripts on day 1 and <i>it</i> and <i>itr</i> transcripts on days 7 and 30 were found in the brains and pituitary glands of FW fish. Increased levels of <i>avt</i> mRNA in the diencephalon and <i>avtr</i> mRNA in the pituitary together with serum cortisol on day 1 of FW exposure indicated activation of the hypothalamic–pituitary–interrenal (HPI) axis. The expression levels of <i>avtr</i> and <i>itr</i> after FW transfer were increased in the pituitary on days 7 and 30. Furthermore, <i>in situ</i> hybridization demonstrated spatially differential expression of <i>avt</i> and <i>itr</i> transcripts in nucleus preopticus parvocellularis of pars gigantocellularis (PMgc), magnocellularis (PMmc), and parvocellularis (PMpc) of the preoptic area (POA). Positive signals for <i>avt</i> and <i>it</i> were highly abundant in PMpc after FW exposure. The data suggest involvement of neurohypophysial hormones in the brain (telencephalon and diencephalon) and pituitary for osmotic stress.
format	article
author	Adimoolam Aruna Chien-Ju Lin Ganesan Nagarajan Ching-Fong Chang
author_facet	Adimoolam Aruna Chien-Ju Lin Ganesan Nagarajan Ching-Fong Chang
author_sort	Adimoolam Aruna
title	Neurohypophysial Hormones Associated with Osmotic Challenges in the Brain and Pituitary of the Euryhaline Black Porgy, <i>Acanthopagrus schlegelii</i>
title_short	Neurohypophysial Hormones Associated with Osmotic Challenges in the Brain and Pituitary of the Euryhaline Black Porgy, <i>Acanthopagrus schlegelii</i>
title_full	Neurohypophysial Hormones Associated with Osmotic Challenges in the Brain and Pituitary of the Euryhaline Black Porgy, <i>Acanthopagrus schlegelii</i>
title_fullStr	Neurohypophysial Hormones Associated with Osmotic Challenges in the Brain and Pituitary of the Euryhaline Black Porgy, <i>Acanthopagrus schlegelii</i>
title_full_unstemmed	Neurohypophysial Hormones Associated with Osmotic Challenges in the Brain and Pituitary of the Euryhaline Black Porgy, <i>Acanthopagrus schlegelii</i>
title_sort	neurohypophysial hormones associated with osmotic challenges in the brain and pituitary of the euryhaline black porgy, <i>acanthopagrus schlegelii</i>
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/86758899254b4d5a9998a969416694f0
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Neurohypophysial Hormones Associated with Osmotic Challenges in the Brain and Pituitary of the Euryhaline Black Porgy, <i>Acanthopagrus schlegelii</i>

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