Abstract:
BACKGROUND:Chronic opioid misuse is associated with reduced sensitivity to natural rewards and social motivation deficits that include impaired caregiving. The neurobiological mechanisms underlying these deficits and their response to treatment are not well understood. Baby schema (Kindchenschema) is a set of juvenile physical features, which is perceived as "cute" and triggers motivation for caregiving. Recent studies suggest that the "baby schema effect" is mediated by the brain "reward" network. We studied the impact of opioid antagonist treatment on the baby schema response in patients with opioid use disorder. METHODS:Forty-seven (24 F) recently detoxified patients with opioid use disorder underwent functional magnetic resonance imaging (fMRI) while viewing infant portraits that were parametrically manipulated for baby schema content and rating them for cuteness, at baseline and during treatment with the injectable extended release opioid antagonist naltrexone (XRNTX). The study was not placebo-controlled. RESULTS:The behavioral effect of baby schema, indexed by "cuteness" ratings, was present and unaffected by XRNTX. The brain response to baby schema was absent at baseline, but present in the bilateral ventral striatum after two weeks of XRNTX treatment. The decline in self-reported craving for opioids was positively correlated with the brain fMRI response to baby schema in the bilateral ventral striatum. CONCLUSIONS:Opioid antagonist treatment modulated the brain reward system response to a marker of caregiving motivation in patients with opioid use disorder. Neural response to baby schema may offer a novel probe of social motivation and affiliative behaviors in this population.
journal_name
J Subst Abuse Treatjournal_title
Journal of substance abuse treatmentauthors
Wang AL,Lowen SB,Elman I,Shi Z,Fairchild VP,Bouril A,Gur RC,Langleben DDdoi
10.1016/j.jsat.2017.10.007subject
Has Abstractpub_date
2018-02-01 00:00:00pages
70-77eissn
0740-5472issn
1873-6483pii
S0740-5472(16)30469-Xjournal_volume
85pub_type
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