Effects of oxytocin on stress reactivity and craving in veterans with co-occurring PTSD and alcohol use disorder

Autor: Nicholas P. Allan, Christal L. Badour, Casey D. Calhoun, Sudie E. Back, Kathleen T. Brady, Megan M. Moran-Santa Maria, Julianne C. Flanagan
Rok vydání: 2019
Předmět:
Zdroj: Experimental and Clinical Psychopharmacology. 27:45-54
ISSN: 1936-2293
1064-1297
0205-8251
DOI: 10.1037/pha0000232
Popis: Posttraumatic stress disorder (PTSD) and alcohol use disorder (AUD) are highly prevalent and commonly co-occur. The dual diagnosis of PTSD/AUD is associated with serious negative sequalae and there are currently no effective pharmacological treatments for this comorbidity. Both PTSD and AUD are characterized by dysregulation of the hypothalamic-pituitary-adrenal (HPA) axis, which helps modulate stress reactivity. Oxytocin, a neuropeptide that attenuates HPA axis dysregulation, may be beneficial for individuals with co-occurring PTSD/AUD. Thus, the current study examined the effects of intranasal oxytocin (40 IU) as compared to placebo on stress reactivity (e.g., cortisol) as well as subjective alcohol craving in response to a laboratory stress task (Trier Social Stress Task). Participants were 67 male U.S. military veterans with current PTSD and AUD (oxytocin n=32, placebo n=35; overall mean Age=49.06 years). Baseline cortisol levels were examined as a moderator of outcome. The findings revealed that oxytocin marginally attenuated cortisol reactivity in response to the stress task. Furthermore, oxytocin’s effect was moderated by baseline cortisol level, such that oxytocin mitigated cortisol reactivity to a greater extent among participants with higher, as compared to lower, baseline cortisol. Oxytocin did not reduce craving. Although preliminary, the findings are the first to examine oxytocin in co-occurring PTSD/AUD. The findings from this study contribute to the growing literature examining the potential utility of oxytocin among individuals with psychiatric disorders, such as PTSD and substance use disorders. NCT02058251. Keywords: PTSD; alcohol; craving; comorbidity; oxytocin; social stress
Databáze: OpenAIRE