Abstract:
:Interactions between emotional stress due to fear and hypovolemic stimuli on vasopressin secretion were studied in rats. Intraperitoneally injected dextran did not significantly change plasma osmolality and arterial blood pressure but increased blood hemoglobin and plasma vasopressin level. An i.v. infused physiological solution reversed these changes. Emotional stress due to fear acquired by learning suppressed plasma vasopressin level in dextran-injected rats. Emotional stress due to fear produced by low-frequency footshocks also suppressed the increased plasma vasopressin level. These results suggest that emotional stress due to fear interacts with afferent neural signals originating from cardio-vascular volume receptors in the control of vasopressin secretion.
journal_name
Neurosci Lettjournal_title
Neuroscience lettersauthors
Onaka T,Yagi Kdoi
10.1016/0304-3940(90)90034-7subject
Has Abstractpub_date
1990-12-11 00:00:00pages
187-90issue
2eissn
0304-3940issn
1872-7972pii
0304-3940(90)90034-7journal_volume
120pub_type
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