title: Distribution of 5-hydroxytriptamine2C receptor mRNA in rat retina.
abstract: There are several factors that suggest serotonin [5-hydroxytryptamine (5-HT)] plays a role as a neurotransmitter/neuromodulator within the retina. The presence of mRNAs encoding 5-HT receptors (5-HTR) of the types 5-HT2CR and 5-HT5AR within the rat retina was investigated using in situ hybridization of digoxigenin-labeled probes. The 5HT5AR probe produced no labeling, whereas the 5HT2CR probe hybridized in cells scattered in the inner nuclear and ganglion cell layers. Thus, the 5HT2CR gene is expressed by retinal neurons, some of which represent third-order neurons, either amacrine or ganglion cells. This suggests that 5-HT may modulate the outgoing signal from the retina.
authors.affiliation: Laboratorio de Neurobiología Molecular y Celular, Departamento de Neurobiología Celular y Molecular, Instituto de Neurobiología, Campus UNAM-Juriquilla, cp 76 001, AP 1-1141 Querétaro, Mexico. japl_mexico@hotmail.com
authors.forename: Jorge Alberto
authors.initials: JA
authors.lastname: Pérez-León
authors.forename: Gabriela
authors.initials: G
authors.lastname: Sarabia
authors.forename: Ricardo
authors.initials: R
authors.lastname: Miledi
authors.forename: Guadalupe
authors.initials: G
authors.lastname: García-Alcocer
mesh_terms: D000818:Animals; D017403:In Situ Hybridization; D009474:Neurons / Q000166:cytology / Q000378:metabolism; D012333:RNA, Messenger / Q000378:metabolism*; D051381:Rats; D017208:Rats, Wistar; D044405:Receptor, Serotonin, 5-HT2C / Q000235:genetics / Q000378:metabolism*; D012160:Retina / Q000166:cytology / Q000378:metabolism*; D012701:Serotonin / Q000378:metabolism
chemical_list: D012333:RNA, Messenger; D044405:Receptor, Serotonin, 5-HT2C; D012701:Serotonin