Dataset Information

No Evidence of Association between Childhood Urban Environment and Cortical Thinning in Psychotic Disorder.

ABSTRACT:

Background

The alterations in cortical morphology, such as cortical thinning, observed in psychotic disorder, may be the outcome of interacting genetic and environmental effects. It has been suggested that urban upbringing may represent a proxy environmental effect impacting cortical thickness (CT). Therefore, the current study examined whether the association between group as a proxy genetic variable (patients with psychotic disorder [high genetic risk], healthy siblings of patients [intermediate risk] and healthy control subjects [average risk]) and CT was conditional on different levels of the childhood urban environment and whether this was sex-dependent.

Methods

T1-weighted MRI scans were acquired from 89 patients with a psychotic disorder, 95 non-psychotic siblings of patients with psychotic disorder and 87 healthy control subjects. Freesurfer software was used to measure CT. Developmental urban exposure was classified as low, medium, and high, reflecting the population density and the number of moves between birth and the 15th birthday, using data from the Dutch Central Bureau of Statistics and the equivalent database in Belgium. Multilevel regression analyses were used to examine the association between group, sex, and urban upbringing (as well as their interactions) and cortical CT as the dependent variable.

Results

CT was significantly smaller in the patient group compared to the controls (B = -0.043, p <0.001), but not in the siblings compared to the controls (B = -0.013, p = 0.31). There was no main effect of developmental urbanicity on CT (B = 0.001, p = 0.91). Neither the three-way group × urbanicity × sex interaction (?2 = 3.73, p = 0.16), nor the two-way group × urbanicity interaction was significant (?2 = 0.51, p = 0.77).

Conclusion

The negative association between (familial risk for) psychotic disorder and CT was not moderated by developmental urbanicity, suggesting that reduced CT is not the outcome of familial sensitivity to the proxy environmental factor 'urban upbringing'.

SUBMITTER: Frissen A

PROVIDER: S-EPMC5207533 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature

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Publications

No Evidence of Association between Childhood Urban Environment and Cortical Thinning in Psychotic Disorder.

Frissen Aleida A van Os Jim J Habets Petra P Gronenschild Ed E Marcelis Machteld M

PloS one 20170103 1

<h4>Background</h4>The alterations in cortical morphology, such as cortical thinning, observed in psychotic disorder, may be the outcome of interacting genetic and environmental effects. It has been suggested that urban upbringing may represent a proxy environmental effect impacting cortical thickness (CT). Therefore, the current study examined whether the association between group as a proxy genetic variable (patients with psychotic disorder [high genetic risk], healthy siblings of patients [in ...[more]

PMID: 28045900

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Dataset Information

No Evidence of Association between Childhood Urban Environment and Cortical Thinning in Psychotic Disorder.

Background

Methods

Results

Conclusion

Publications

No Evidence of Association between Childhood Urban Environment and Cortical Thinning in Psychotic Disorder.

Similar Datasets

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