The Neuroanatomic Complexity of the CRF and DA Systems and Their Interface: What We Still Don't Know
Overview
Psychology
Social Sciences
Affiliations
Corticotropin-releasing factor (CRF) is a neuropeptide that mediates the stress response. Long known to contribute to regulation of the adrenal stress response initiated in the hypothalamic-pituitary axis (HPA), a complex pattern of extrahypothalamic CRF expression is also described in rodents and primates. Cross-talk between the CRF and midbrain dopamine (DA) systems links the stress response to DA regulation. Classically CRF + cells in the extended amygdala and paraventricular nucleus (PVN) are considered the main source of this input, principally targeting the ventral tegmental area (VTA). However, the anatomic complexity of both the DA and CRF system has been increasingly elaborated in the last decade. The DA neurons are now recognized as having diverse molecular, connectional and physiologic properties, predicted by their anatomic location. At the same time, the broad distribution of CRF cells in the brain has been increasingly delineated using different species and techniques. Here, we review updated information on both CRF localization and newer conceptualizations of the DA system to reconsider the CRF-DA interface.
Neurobiology of Stress-Induced Nicotine Relapse.
Wang X, Chen Y, Dong J, Ge J, Liu X, Liu J Int J Mol Sci. 2024; 25(3).
PMID: 38338760 PMC: 10855331. DOI: 10.3390/ijms25031482.
Hypothalamic CRF neurons facilitate brain reward function.
Xu X, Zheng S, Ren J, Li Z, Li J, Xu Z Curr Biol. 2024; 34(2):389-402.e5.
PMID: 38215742 PMC: 10842365. DOI: 10.1016/j.cub.2023.12.046.
Kelly E, Love T, Fudge J Synapse. 2023; 78(1):e22284.
PMID: 37996987 PMC: 10842953. DOI: 10.1002/syn.22284.
Holloway A, Schaid M, Lerner T Neuropsychopharmacology. 2023; 48(9):1328-1337.
PMID: 36810463 PMC: 10353992. DOI: 10.1038/s41386-023-01551-1.
Preservation of dendritic D2 receptor transmission in substantia nigra dopamine neurons with age.
Troyano-Rodriguez E, Blankenship H, Handa K, Branch S, Beckstead M Sci Rep. 2023; 13(1):1025.
PMID: 36658269 PMC: 9852430. DOI: 10.1038/s41598-023-28174-2.