Differential expression of five prosomatostatin genes in the central nervous system of the catshark Scyliorhinus canicula.

The Journal of Comparative Neurology
D. Sobrido-CameanAnton Barreiro-Iglesias

Abstract

Five prosomatostatin genes (PSST1, PSST2, PSST3, PSST5, and PSST6) have been recently identified in elasmobranchs (Tostivint et al., General and Comparative Endocrinology, 2019, 279, 139-147). In order to gain insight into the contribution of each somatostatin to specific nervous systems circuits and behaviors in this important jawed vertebrate group, we studied the distribution of neurons expressing PSST mRNAs in the central nervous system (CNS) of Scyliorhinus canicula using in situ hybridization. Additionally, we combined in situ hybridization with tyrosine hydroxylase (TH) immunochemistry for better characterization of PSST1 and PSST6 expressing populations. We observed differential expression of PSST1 and PSST6, which are the most widely expressed PSST transcripts, in cell populations of many CNS regions, including the pallium, subpallium, hypothalamus, diencephalon, optic tectum, midbrain tegmentum, and rhombencephalon. Interestingly, numerous small pallial neurons express PSST1 and PSST6, although in different populations judging from the colocalization of TH immunoreactivity and PSST6 expression but not with PSST1. We observed expression of PSST1 in cerebrospinal fluid-contacting (CSF-c) neurons of the hypothalamic para...Continue Reading

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Citations

Jun 18, 2020·International Journal of Molecular Sciences·Emmanuel AmpofoMatthias W Laschke
Feb 4, 2021·Brain Structure & Function·D Sobrido-CameánA Barreiro-Iglesias
Oct 19, 2021·Brain, Behavior and Evolution·Isabel Rodríguez-MoldesEva Candal

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