期刊
BIOMEDICINES
卷 11, 期 8, 页码 -出版社
MDPI
DOI: 10.3390/biomedicines11082217
关键词
CRF; urocortin; CRF receptor; social interaction
Since the discovery of CRF and CRF-related peptides, their involvement in various aspects of social behavior in rodents has been investigated. The CRF system consists of different ligands, receptors, and binding proteins, and plays a crucial role in neuroendocrine regulation and stress responses. The experiments reviewed in this study highlight the importance of CRF and the urocortins in social behavior, including sociability, social novelty preference, social recognition, discrimination, and memory, as well as the involvement of specific brain regions and pathways. However, differences in species, strains, and sexes make it challenging to translate these findings to humans.
Since the corticotropin-releasing factor (CRF) was isolated from an ovine brain, a growing family of CRF-related peptides has been discovered. Today, the mammalian CRF system consists of four ligands (CRF, urocortin 1 (Ucn1), urocortin 2 (Ucn2), and urocortin 3 (Ucn3)); two receptors (CRF receptor type 1 (CRF1) and CRF receptor type 2 (CRF2)); and a CRF-binding protein (CRF-BP). Besides the regulation of the neuroendocrine, autonomic, and behavioral responses to stress, CRF and CRF-related peptides are also involved in different aspects of social behavior. In the present study, we review the experiments that investigated the role of CRF and the urocortins involved in the social behavior of rats, mice, and voles, with a special focus on sociability and preference for social novelty, as well as the ability for social recognition, discrimination, and memory. In general, these experiments demonstrate that CRF, Ucn1, Ucn2, and Ucn3 play important, but distinct roles in the social behavior of rodents, and that they are mediated by CRF1 and/or CRF2. In addition, we suggest the possible brain regions and pathways that express CRF and CRF-related peptides and that might be involved in social interactions. Furthermore, we also emphasize the differences between the species, strains, and sexes that make translation of these roles from rodents to humans difficult.
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