Localization of three types of arginine vasotocin receptors in the brain and pituitary of the newt Cynops pyrrhogaster

The distribution of three types of arginine vasotocin (AVT) receptors in the brain and pituitary of the newt Cynops pyrrhogaster , namely, the V1a-, V2-, and V3/V1b-type receptors, was studied by means of in situ hybridization and immunohistochemistry. mRNA signals and immunoreactive cells for the V...

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Veröffentlicht in:Cell and tissue research 2010-12, Vol.342 (3), p.437-457
Hauptverfasser: Hasunuma, Itaru, Toyoda, Fumiyo, Kadono, Yoshihiko, Yamamoto, Kazutoshi, Namiki, Hideo, Kikuyama, Sakae
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container_issue 3
container_start_page 437
container_title Cell and tissue research
container_volume 342
creator Hasunuma, Itaru
Toyoda, Fumiyo
Kadono, Yoshihiko
Yamamoto, Kazutoshi
Namiki, Hideo
Kikuyama, Sakae
description The distribution of three types of arginine vasotocin (AVT) receptors in the brain and pituitary of the newt Cynops pyrrhogaster , namely, the V1a-, V2-, and V3/V1b-type receptors, was studied by means of in situ hybridization and immunohistochemistry. mRNA signals and immunoreactive cells for the V1a-type receptor were observed in the telencephalon (mitral layer of the olfactory bulb, dorsal and medial pallium, lateral and medial amygdala, bed nucleus of the decussation of the fasciculus telencephali, bed nucleus of the stria terminalis), diencephalon (anterior preoptic area, magnocellular preoptic nucleus, suprachiasmatic nucleus, ventral thalamus, dorsal and ventral hypothalamic nucleus), mesencephalon (tegmentum, interpeduncular nucleus), and medulla oblongata (median reticular formation, nucleus motorius tegmenti). Cells expressing the V2-type receptor were found in the telencephalon (medial pallium, lateral and medial amygdala, bed nucleus of the decussation of the fasciculus telencephali), and mesencephalon (tegmentum trigemini and facialis). In the paraphysis (possibly the main site of cerebrospinal fluid production), only V2-type receptor mRNA signal and immunoreactivity were detected. V3/V1b-type receptor mRNA was expressed in the diencephalon (dorsal hypothalamic nucleus, nucleus tuberculi posterioris), mesencephalon (tegmentum, interpeduncular nucleus), and medulla oblongata (raphe nucleus), whereas V3/V1b-type-receptor-like immunoreactivity was scarcely detectable in the entire brain. The V3/V1b-type receptor was predominantly expressed in the anterior pituitary. V3/V1b-type receptor and proopiomelanocortin mRNAs were co-localized in the distal lobe of the pituitary. This is the first report of the distribution of three types of AVT receptor in the brain and pituitary of non-mammalian vertebrates.
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Cells expressing the V2-type receptor were found in the telencephalon (medial pallium, lateral and medial amygdala, bed nucleus of the decussation of the fasciculus telencephali), and mesencephalon (tegmentum trigemini and facialis). In the paraphysis (possibly the main site of cerebrospinal fluid production), only V2-type receptor mRNA signal and immunoreactivity were detected. V3/V1b-type receptor mRNA was expressed in the diencephalon (dorsal hypothalamic nucleus, nucleus tuberculi posterioris), mesencephalon (tegmentum, interpeduncular nucleus), and medulla oblongata (raphe nucleus), whereas V3/V1b-type-receptor-like immunoreactivity was scarcely detectable in the entire brain. The V3/V1b-type receptor was predominantly expressed in the anterior pituitary. V3/V1b-type receptor and proopiomelanocortin mRNAs were co-localized in the distal lobe of the pituitary. This is the first report of the distribution of three types of AVT receptor in the brain and pituitary of non-mammalian vertebrates.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer-Verlag</pub><pmid>21079998</pmid><doi>10.1007/s00441-010-1079-0</doi><tpages>21</tpages></addata></record>
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subjects Amphibians
Animals
Arginine
Biomedical and Life Sciences
Biomedicine
Brain
Brain Chemistry
Cynops pyrrhogaster
Diencephalon - chemistry
Diencephalon - cytology
Fluorescent Antibody Technique
Human Genetics
Immunohistochemistry
In Situ Hybridization
Intermedin
Medulla Oblongata - chemistry
Medulla Oblongata - cytology
Mesencephalon - chemistry
Mesencephalon - cytology
Molecular Medicine
Neurons
Pituitary Gland, Anterior - chemistry
Pituitary Gland, Anterior - cytology
Polymerase Chain Reaction
Proteomics
Receptors, Vasopressin - analysis
Receptors, Vasopressin - isolation & purification
Regular Article
RNA
RNA, Messenger
Salamandridae
Salamandridae - metabolism
Signal Transduction
Telencephalon - chemistry
Telencephalon - cytology
title Localization of three types of arginine vasotocin receptors in the brain and pituitary of the newt Cynops pyrrhogaster
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