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Udgivet

S100B and brain derived neurotrophic factor in monozygotic twins with, at risk of and without affective disorders

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Vis graf over relationer

BACKGROUND: The calcium binding protein S100B and brain derived neurotrophic factor (BDNF) are both biomarkers implicated in neuronal processes in the central nervous system and seem to be associated with affective disorders. Here we investigated both markers in a sample of monozygotic (MZ) twins with, at risk of and without affective disorders, aiming to evaluate whether these markers have a role as causal factors- or trait markers for affective disorders.

METHOD: We measured serum S100B and plasma BDNF levels in 204 monozygotic twins (MZ) with unipolar or bipolar disorder in remission or partial remission (affected), their unaffected co-twins (high-risk) and twins with no personal or family history of affective disorder (low-risk).

RESULTS: No significant group differences in S100B and BDNF levels were found between the three groups. Exploratory analysis revealed that higher S100B levels were correlated with lower cognitive performance.

LIMITATIONS: The cross-sectional design cannot elucidate the two neuronal biomarkers role as causal factors. We would have preferred a higher sample size in the high- and low-risk groups.

CONCLUSION: The present result did not support a role for S100B and BDNF as neither causal factors nor trait markers for affective disorders. Elevated S100B levels may associate with impaired cognition, but further studies are warranted.

OriginalsprogEngelsk
TidsskriftJournal of Affective Disorders
Vol/bind274
Sider (fra-til)726-732
Antal sider7
ISSN0165-0327
DOI
StatusUdgivet - 1 sep. 2020

Bibliografisk note

Copyright © 2020. Published by Elsevier B.V.

ID: 60406925