Environmental events that modify the catecholamine fluorescence of the A2 cell bodies in nucleus tractus solitarii.

Publisher Website
Google Scholar
Abstract
The fluorescence intensity of the catecholamine cell bodies of the A2 group, as determined by microfluorimetry, increased significantly due to exposure of the rats to the following environmental events: placement of a rat from the colony cage into a cold (4.degree. C) room for a period of 10 min, isolation of a rat from the colony for 6-7 days and satiation of grouped rats by allowing them access to sweetened milk for 15 min. The following events failed to affect the intensity of the cells of A2: reduction of the group colony size from 8 to 3 rats per colony for 6-7 days and presentation of H2O instead of milk after the rats experienced 6-7 days of milk satiation. Aversive as well as rewarding environmental events activate the catecholamine cells of A2.