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  • Empathy deficits and their ...
    Baez, Sandra; Fittipaldi, Sol; de la Fuente, Laura Alethia; Carballo, Marcela; Ferrando, Rodolfo; García-Cordero, Indira; Gonzalez Campo, Cecilia; Garcia, Adolfo M.; Sedeño, Lucas; Ibáñez, Agustín

    Progress in neuro-psychopharmacology & biological psychiatry, 08/2021, Letnik: 110
    Journal Article

    Reduced empathic abilities are frequently observed in drug abusers. These deficits may compromise interpersonal interactions and contribute to diminished social functioning. However, previous evidence regarding empathy and addiction is behaviorally unspecific and virtually null in terms of their brain structural or functional correlates. Moreover, no previous study has investigated how empathy is affected by drugs whose consumption is particularly characterized by counter-empathic behaviors. Here, we conducted the first assessment of neurocognitive correlates of empathy for pain in dependent users (predominantly men) of smoked cocaine (SC, coca paste, n = 37). We compared their performance in the empathy task with that of two groups matched in relevant demographic variables: 24 dependent users of insufflated cocaine hydrochloride (CC) and 21 healthy controls. In addition, we explored the structural anatomy and functional connectivity (FC) correlates of empathic impairments across groups. Our results showed that, compared to CC and controls, SC users exhibited a selective reduction of empathic concern for intentional harms. These impairments were associated with lower gray matter volumes in regions subserving social cognition (i.e., right inferior parietal lobule, supramarginal and angular gyri). Furthermore, reduced empathic concern correlated with FC within affective empathy and social cognition networks, which are also linked to cognitive changes reported in addiction (i.e., inferior frontal and orbital gyri, posterior insula, supplementary motor area, cingulate cortex). Our findings suggest that chronic consumption of SC may involve reduced empathic concern and relevant neuroanatomical and FC abnormalities, which, in turn, may result in social interaction dysfunction. These results can inform theoretical and applied developments in neuropsychopharmacology. •This is the first study to investigate correlates of empathy in smoked cocaine dependent (SCD) users.•SCD users show selective reduction of empathic concern.•Empathic concern in SCD is associated with lower gray matter volumes in social cognition regions.•Empathic concern in SCD correlates with functional connectivity within social cognition networks.•SCD exhibit lower empathic skills than insufflated cocaine hydrochloride dependent users.