Reward Responsiveness in Patients with Opioid Use Disorder on Opioid Agonist Treatment: Role of Comorbid Chronic Pain

Autor: Samuel W. Stull, Karran A. Phillips, Daniel Agage, Patrick H. Finan, William J. Kowalczyk, Chung Jung Mun, Diego A. Pizzagalli, Kenzie L. Preston, David H. Epstein, Janelle E. Letzen
Rok vydání: 2021
Předmět:
Zdroj: Pain Med
ISSN: 1526-4637
1526-2375
Popis: Objective Evidence suggests that blunted reward responsiveness may account for poor clinical outcomes in both opioid use disorder (OUD) and chronic pain. Understanding how individuals with OUD and comorbid chronic pain (OUD+CP) respond to rewards is, therefore, of clinical interest because it may reveal a potential point of behavioral intervention. Methods Patients with OUD (n = 28) and OUD+CP (n = 19) on opioid agonist treatment were compared on: 1) the Probabilistic Reward Task (an objective behavioral measure of reward response bias) and 2) ecological momentary assessment of affective responses to pleasurable events. Results Both the OUD and the OUD+CP groups evidenced an increase in reward response bias in the Probabilistic Reward Task. The rate of change in response bias across blocks was statistically significant in the OUD group (B = 0.06, standard error [SE] = 0.02, t = 3.92, P Conclusions Overall, findings across objective and subjective measures were mixed, necessitating follow-up with a larger sample. The results suggest that although there is a reward response bias in patients with OUD+CP treated with opioid agonist treatment relative to patients with OUD without CP, it is modest and does not appear to translate into patients’ responses to rewarding events as they unfold in daily life.
Databáze: OpenAIRE