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Link shown between inflammation in maternal blood, schizophrenia in offspring

Date:
July 8, 2014
Source:
Columbia University's Mailman School of Public Health
Summary:
Maternal inflammation as indicated by the presence in maternal blood of early gestational C-reactive protein -- an established inflammatory biomarker -- appears to be associated with greater risk for schizophrenia in offspring. "Inflammation has been shown to alter brain development in previous studies, and schizophrenia is a neurodevelopmental disorder. Thus, this study provides an important link between inflammation and schizophrenia and may help us to better understand the biological mechanisms that lead to this disorder," one author explained.

Maternal inflammation as indicated by the presence in maternal blood of early gestational C-reactive protein -- an established inflammatory biomarker -- appears to be associated with greater risk for schizophrenia in offspring, according to researchers at Columbia University's Mailman School of Public Health, Columbia University Medical Center, and the New York State Psychiatric Institute. The study, "Elevated Maternal C-Reactive Protein and Increased Risk of Schizophrenia in a National Birth Cohort," is published online in the American Journal of Psychiatry.

The Columbia researchers with colleagues in Finland conducted an analysis of data from the Finnish Prenatal Study of Schizophrenia, a large, national birth cohort with an extensive bio-bank. They tested for the presence of C-reactive protein in the maternal blood of 777 offspring with schizophrenia and compared the findings with those from 777 control subjects. Maternal C-reactive protein levels were assessed from archived maternal serum specimens.

They found that increasing maternal C-reactive protein levels were significantly associated with development of schizophrenia in offspring and remained significant after adjusting for potential confounders such as parental history of psychiatric disorders, twin/singleton birth, location of birth, and maternal socioeconomic status. For every 1 mg/L increase in maternal C-reactive protein, the risk of schizophrenia increased by 28%.

"This is the first time that this association has been demonstrated, indicating that an infection or increased inflammation during pregnancy could increase the risk of schizophrenia in the offspring," said Alan Brown, MD, MPH, professor of Epidemiology and Psychiatry and senior author. "Inflammation has been shown to alter brain development in previous studies, and schizophrenia is a neurodevelopmental disorder. Thus, this study provides an important link between inflammation and schizophrenia and may help us to better understand the biological mechanisms that lead to this disorder. To the extent that the increased inflammation is due to infection, this work may suggest that approaches aimed at preventing infection may have the potential to reduce risk of schizophrenia." There are many other known causes of inflammation, including tissue injury and autoimmune disease, although the researchers did not examine these specific conditions in this study.


Story Source:

The above story is based on materials provided by Columbia University's Mailman School of Public Health. Note: Materials may be edited for content and length.


Journal Reference:

  1. Sarah Canetta, Andre Sourander, Heljä-Marja Surcel, Susanna Hinkka-Yli-Salomäki, Jaana Leiviskä, Christoph Kellendonk, Ian W. McKeague, Alan S. Brown. Elevated Maternal C-Reactive Protein and Increased Risk of Schizophrenia in a National Birth Cohort. American Journal of Psychiatry, 2014; DOI: 10.1176/appi.ajp.2014.13121579

Cite This Page:

Columbia University's Mailman School of Public Health. "Link shown between inflammation in maternal blood, schizophrenia in offspring." ScienceDaily. ScienceDaily, 8 July 2014. <www.sciencedaily.com/releases/2014/07/140708121746.htm>.
Columbia University's Mailman School of Public Health. (2014, July 8). Link shown between inflammation in maternal blood, schizophrenia in offspring. ScienceDaily. Retrieved July 21, 2014 from www.sciencedaily.com/releases/2014/07/140708121746.htm
Columbia University's Mailman School of Public Health. "Link shown between inflammation in maternal blood, schizophrenia in offspring." ScienceDaily. www.sciencedaily.com/releases/2014/07/140708121746.htm (accessed July 21, 2014).

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