Journal
WORLD JOURNAL OF BIOLOGICAL PSYCHIATRY
Volume 23, Issue 4, Pages 243-256Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/15622975.2021.1961502
Keywords
C-reactive protein; CRP; hsCRP; neuroinflammation; psychiatry
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The review evaluates the potential of using CRP as a biomarker for psychiatric disorders, based on accumulating evidence from large studies and meta-analyses. CRP may serve as a 'psychiatric biomarker' to inform clinicians about neuroinflammation, medication effects, cardiometabolic status, comorbidities, and potentially guide treatment selection based on clinical outcomes.
Objectives Serum or plasma levels of C-reactive protein (CRP) and high-sensitivity CRP (hsCRP) are widely used clinical markers of inflammation in other branches of medicine, whereas its clinical use in psychiatry has been limited to research studies. We aimed to assess the possibility of using CRP/hsCRP in psychiatric practice. This is a review and evaluation of various lines of evidence supporting the concept of CRP as a biomarker for psychiatric disorders in certain conditions. Methods We searched the literature for studies which assessed CRP/hsCRP levels in various psychiatric disorders. Results The accumulating evidence from large studies and meta-analyses allows us to understand the role of CRP in major psychiatric disorders and increase our understanding of specific symptoms and subtypes of disorders. CRP may be considered a 'psychiatric biomarker' which can alert clinicians about neuroinflammation, adverse effects of medications, cardiometabolic status, co-morbidities, and may also predict clinical outcomes and guide optimal treatment.selection. Conclusion Although the underlying pathophysiological role of CRP and hsCRP is still elusive and the association between CRP and psychiatric disorders is inconsistent, CRP holds promise to become a psychiatric biomarker.
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