Anxiety: An overlooked confounder in the characterisation of chronic stress-related conditions?. Viljoen, M., Benecke, R., M., Martin, L., Adams, R., C., Seedat, S., & Smith, C. PLoS ONE, 15(4):1-16, 2020.
Anxiety: An overlooked confounder in the characterisation of chronic stress-related conditions? [link]Website  abstract   bibtex   
Although anxiety disorders are among the most prevalent of psychiatric disorders, childhood trauma-related studies seldom consider anxiety proneness as distinct aetiological contributor. We aimed to distinguish between trauma- and anxiety-associated physiological profiles. South African adolescent volunteers were categorised for trauma exposure (CTQ, mean score 39±11) and anxiety proneness (AP)(CASI, mean score 37±7, STAI-T, mean score 41 ±8). Circulating hormone and leukocyte glucocorticoid receptor levels, as well as leukocyte functional capacity, were assessed. AP was associated with lower DHEAs (P<0.05) and higher leukocyte GR expression (P<0.05). DHEAs was also negatively correlated with anxiety sensitivity (CASI, P<0.05). In conclusion, AP may have more predictive power than trauma in terms of health profile. Increased glucocorticoid sensitivity previously reported after trauma, may be a unique function of anxiety and not trauma exposure per se. DHEAs concentration was identified as potentially useful marker for monitoring progressive changes in HPA-axis sensitivity and correlated with psychological measures of anxiety.
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 title = {Anxiety: An overlooked confounder in the characterisation of chronic stress-related conditions?},
 type = {article},
 year = {2020},
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 pages = {1-16},
 volume = {15},
 websites = {http://dx.doi.org/10.1371/journal.pone.0230053},
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 abstract = {Although anxiety disorders are among the most prevalent of psychiatric disorders, childhood trauma-related studies seldom consider anxiety proneness as distinct aetiological contributor. We aimed to distinguish between trauma- and anxiety-associated physiological profiles. South African adolescent volunteers were categorised for trauma exposure (CTQ, mean score 39±11) and anxiety proneness (AP)(CASI, mean score 37±7, STAI-T, mean score 41 ±8). Circulating hormone and leukocyte glucocorticoid receptor levels, as well as leukocyte functional capacity, were assessed. AP was associated with lower DHEAs (P<0.05) and higher leukocyte GR expression (P<0.05). DHEAs was also negatively correlated with anxiety sensitivity (CASI, P<0.05). In conclusion, AP may have more predictive power than trauma in terms of health profile. Increased glucocorticoid sensitivity previously reported after trauma, may be a unique function of anxiety and not trauma exposure per se. DHEAs concentration was identified as potentially useful marker for monitoring progressive changes in HPA-axis sensitivity and correlated with psychological measures of anxiety.},
 bibtype = {article},
 author = {Viljoen, Monet and Benecke, Rohan M. and Martin, Lindi and Adams, Rozanne C.M. and Seedat, Soraya and Smith, Carine},
 journal = {PLoS ONE},
 number = {4}
}

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