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Effects of pharmacological treatments on neuroimaging findings in borderline personality disorder: A review of FDG-PET and fNIRS studies

期刊

JOURNAL OF AFFECTIVE DISORDERS
卷 308, 期 -, 页码 314-321

出版社

ELSEVIER
DOI: 10.1016/j.jad.2022.04.050

关键词

Borderline personality disorder; FDG-PET; fNIRS; Antidepressants; Antipsychotics; Mood stabilizers; Serotonin

资金

  1. Italian Ministry of Health [RF-2016-02364582]

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Studies have shown that medications have an impact on brain metabolism in individuals with borderline personality disorder, particularly in the frontal and temporal areas. However, the effects on brain hemodynamics remain inconclusive or absent. Limitations such as small sample sizes, high percentage of women, heterogeneity in pharmaceutical agents, and comorbidities restrict the conclusions of current research on this topic.
Background: Borderline personality disorder (BPD) is a serious mental condition characterized by instability in identity, interpersonal relationships, emotion regulation and impulsivity. These symptoms seem to be associated to specific brain alterations, which have been largely investigated. In particular, positron emission tomography (PET) and functional near-infrared spectroscopy (fNIRS) have demonstrated abnormalities in brain metabolism and hemodynamics in BPD, specifically in the fronto-limbic system. However, the role of medications on brain metabolism and hemodynamics in BPD is still largely unknown. Methods: We conducted a search on PubMed, Scopus and Web of Science of PET and fNIRS studies exploring the effect of medications on brain metabolism and hemodynamics in BPD. A total of 10 studies met the inclusion criteria. Results: Overall, PET studies showed an effect of psychotropic agents on brain metabolism, especially in frontal and temporal areas. Also, higher metabolic rates in frontal areas were found to correlate with clinical improvements. In contrast, fNIRS investigations reported an inconclusive or absent effects on brain hemodynamics in BPD patients. Limitations: The small sample size, the elevated percentage of women, the heterogeneity in pharmacological agents and the presence of comorbidities limit the conclusions of the present review. Conclusions: Serotoninergic agents and second-generation antipsychotics produce changes in frontal and temporal metabolism in BPD, which appear to correlate with clinical improvements. Differently, brain hemodynamics do not seem to be significantly affected by the most commonly prescribed drugs in BPD, suggesting that the therapeutic actions of medications are not mediated by changes in neural hemodynamics.

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