The abstract is read at the publisher; the summary is JClub's.
In larval zebrafish, increasing glucocorticoid stress intensity produces distinct anxiety phenotypes, with serotonergic DRN recruitment required only under lower exposure.
- Why it matters: Serotonin’s role in anxiety is inconsistent, suggesting its engagement may depend on the stress history that generates the anxious state.
- What they did: Larval zebrafish received graded glucocorticoid exposure combined with chemogenetic DRN manipulation, whole-brain activity mapping, and pharmacology to test stress-intensity dependence.
- The result: Lower exposure yielded context-general, DRN-dependent anxiety, while higher exposure produced context-dependent, DRN-independent anxiety; a posterior tubercular/hypothalamic dopaminergic region and D1 receptor signaling mediated DRN-dependent anxiolysis.
The findingWhy it mattersWhat they didThe result
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