Dendritic Architecture of Principal Basolateral Amygdala Neurons Changes Congruently with Endocrine Response to Stress

Akshaya Hegde, Poh Soh Yee and Rupshi Mitra
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Akshaya Hegde: School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore 637551, Singapore
Poh Soh Yee: School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore 637551, Singapore
Rupshi Mitra: School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore 637551, Singapore

IJERPH, 2017, vol. 14, issue 7, 1-13

Abstract: Animals cope with changing environments through changes in behavior. Such plasticity is, however, marked by substantial inter-individual variability. Neuroendocrine reactivity to challenging environments can be an important predictor of resilience. Both basolateral amygdala (BLA) neurons and adrenal glucocorticoid signaling are integral parts of the stress neuroendocrine response. In this report, we test if individual variation in hormonal response to stress is associated with individual variation in the dendritic complexity of BLA neurons. We report a positive correlation between inter-individual variability in glucocorticoid response and neuronal plasticity in the BLA subsequent to a stressor. This suggests that stressful experiences in the past act as significant sculptors of BLA neuronal plasticity and congruent neuroendocrine response.

Keywords: anxiety; corticosterone; inter-individual variation; amygdala; neuroendocrine; predator stress (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2017
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