Species Differences in the Immunoreactive Expression of Oxytocin, Vasopressin, Tyrosine Hydroxylase and Estrogen Receptor Alpha in the Brain of Mongolian Gerbils Meriones unguiculatus and Chinese Striped Hamsters Cricetulus barabeReportar como inadecuado




Species Differences in the Immunoreactive Expression of Oxytocin, Vasopressin, Tyrosine Hydroxylase and Estrogen Receptor Alpha in the Brain of Mongolian Gerbils Meriones unguiculatus and Chinese Striped Hamsters Cricetulus barabe - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Species differences in neurochemical expression and activity in the brain may play an important role in species-specific patterns of social behavior. In the present study, we used immunoreactive ir labeling to compare the regional density of cells containing oxytocin OT, vasopressin AVP, tyrosine hydroxylase TH, or estrogen receptor alpha ERα staining in the brains of social Mongolian gerbils Meriones unguiculatus and solitary Chinese striped hamsters Cricetulus barabensis. Multiple region- and neurochemical-specific species differences were found. In the anterior hypothalamus AH, Mongolian gerbils had higher densities of AVP-ir and ERα-ir cells than Chinese striped hamsters. In the lateral hypothalamus LH, Mongolian gerbils also had higher densities of AVP-ir and TH-ir cells, but a lower density of OT-ir cells, than Chinese striped hamsters. Furthermore, in the anterior nucleus of the medial preoptic area MPOAa, Mongolian gerbils had higher densities of OT-ir and AVP-ir cells than Chinese striped hamsters, and an opposite pattern was found in the posterior nucleus of the MPOA MPOAp. Some sex differences were also observed. Females of both species had higher densities of TH-ir cells in the MPOAa and of OT-ir cells in the intermediate nucleus of the MPOA MPOAi than males. Given the role of these neurochemicals in social behaviors, our data provide additional evidence to support the notion that species-specific patterns of neurochemical expression in the brain may be involved in species differences in social behaviors associated with different life strategies.



Autor: Yu Wang , Linxi Xu , Yongliang Pan, Zuoxin Wang, Zhibin Zhang

Fuente: http://plos.srce.hr/



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