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Interaction Effects of Season of Birth and Cytokine Genes on Schizotypal Traits in the General Population
Literature suggests that the effect of winter birth on vulnerability to schizophrenia might be mediated by increased expression of proinflammatory cytokines due to prenatal infection and its inadequate regulation by anti-inflammatory factors. As the response of the immune system depends on genotype,...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Hindawi
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5804364/ https://www.ncbi.nlm.nih.gov/pubmed/29464121 http://dx.doi.org/10.1155/2017/5763094 |
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author | Alfimova, Margarita V. Korovaitseva, Galina I. Lezheiko, Tatyana V. Golimbet, Vera E. |
author_facet | Alfimova, Margarita V. Korovaitseva, Galina I. Lezheiko, Tatyana V. Golimbet, Vera E. |
author_sort | Alfimova, Margarita V. |
collection | PubMed |
description | Literature suggests that the effect of winter birth on vulnerability to schizophrenia might be mediated by increased expression of proinflammatory cytokines due to prenatal infection and its inadequate regulation by anti-inflammatory factors. As the response of the immune system depends on genotype, this study assessed the interaction effects of cytokine genes and season of birth (SOB) on schizotypy measured with the Schizotypal Personality Questionnaire (SPQ-74). We searched for associations of IL1B rs16944, IL4 rs2243250, and IL-1RN VNTR polymorphisms, SOB, and their interactions with the SPQ-74 total score in a sample of 278 healthy individuals. A significant effect of the IL4 X SOB interaction was found, p = 0.007 and η(2) = 0.028. We confirmed this effect using an extended sample of 373 individuals. Homozygotes CC born in winter showed the highest SPQ total score and differed significantly from winter-born T allele carriers, p = 0.049. This difference was demonstrated for cognitive-perceptual and disorganized but not interpersonal dimensions. The findings are consistent with the hypothesis that the cytokine genes by SOB interaction can influence variability of schizotypal traits in the general population. The IL4 T allele appeared to have a protective effect against the development of positive and disorganized schizotypal traits in winter-born individuals. |
format | Online Article Text |
id | pubmed-5804364 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Hindawi |
record_format | MEDLINE/PubMed |
spelling | pubmed-58043642018-02-20 Interaction Effects of Season of Birth and Cytokine Genes on Schizotypal Traits in the General Population Alfimova, Margarita V. Korovaitseva, Galina I. Lezheiko, Tatyana V. Golimbet, Vera E. Schizophr Res Treatment Research Article Literature suggests that the effect of winter birth on vulnerability to schizophrenia might be mediated by increased expression of proinflammatory cytokines due to prenatal infection and its inadequate regulation by anti-inflammatory factors. As the response of the immune system depends on genotype, this study assessed the interaction effects of cytokine genes and season of birth (SOB) on schizotypy measured with the Schizotypal Personality Questionnaire (SPQ-74). We searched for associations of IL1B rs16944, IL4 rs2243250, and IL-1RN VNTR polymorphisms, SOB, and their interactions with the SPQ-74 total score in a sample of 278 healthy individuals. A significant effect of the IL4 X SOB interaction was found, p = 0.007 and η(2) = 0.028. We confirmed this effect using an extended sample of 373 individuals. Homozygotes CC born in winter showed the highest SPQ total score and differed significantly from winter-born T allele carriers, p = 0.049. This difference was demonstrated for cognitive-perceptual and disorganized but not interpersonal dimensions. The findings are consistent with the hypothesis that the cytokine genes by SOB interaction can influence variability of schizotypal traits in the general population. The IL4 T allele appeared to have a protective effect against the development of positive and disorganized schizotypal traits in winter-born individuals. Hindawi 2017 2017-12-31 /pmc/articles/PMC5804364/ /pubmed/29464121 http://dx.doi.org/10.1155/2017/5763094 Text en Copyright © 2017 Margarita V. Alfimova et al. https://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Article Alfimova, Margarita V. Korovaitseva, Galina I. Lezheiko, Tatyana V. Golimbet, Vera E. Interaction Effects of Season of Birth and Cytokine Genes on Schizotypal Traits in the General Population |
title | Interaction Effects of Season of Birth and Cytokine Genes on Schizotypal Traits in the General Population |
title_full | Interaction Effects of Season of Birth and Cytokine Genes on Schizotypal Traits in the General Population |
title_fullStr | Interaction Effects of Season of Birth and Cytokine Genes on Schizotypal Traits in the General Population |
title_full_unstemmed | Interaction Effects of Season of Birth and Cytokine Genes on Schizotypal Traits in the General Population |
title_short | Interaction Effects of Season of Birth and Cytokine Genes on Schizotypal Traits in the General Population |
title_sort | interaction effects of season of birth and cytokine genes on schizotypal traits in the general population |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5804364/ https://www.ncbi.nlm.nih.gov/pubmed/29464121 http://dx.doi.org/10.1155/2017/5763094 |
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