| Heritability of parturition timing: an extended twin design analysis. | |
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MedLine Citation:
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PMID: 18295169 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: The objective of the study was to assess relative maternal and paternal genetic influences on birth timing. STUDY DESIGN: Utilizing The Netherlands Twin Registry, we examined the correlation in birth timing of infants born to monozygotic (MZ) twins and their first-degree relatives (dizygotic twins and siblings of twins). Genetic models estimated the relative influence of genetic and common environmental factors through model fitting of additive genetic (A), common environmental (C), individual-specific environmental factors, and combinations thereof. RESULTS: We evaluated birth timing correlation among the infants of 1390 twins and their 644 siblings. The correlation in MZ female twins (r = 0.330) was greater than MZ male twins (r = -0.096). Positive correlation were also found in sister-sister pairs (r = 0.223) but not in brother-brother (r = -0.045) or brother-sister pairs (r = -0.038). The most parsimonious AE model indicated a significant maternal contribution of genetic and individual-specific environmental factors to birth timing, but no paternal heritability was demonstrated. Heritability of birth timing in women was 34%; and the remaining variance (66%) was caused by individual-specific environmental factors. CONCLUSION: Our data implicate a significant contribution of maternal but not paternal genetic influences on birth timing. |
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Authors:
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Zachary A-F Kistka; Emily A DeFranco; Lannie Ligthart; Gonneke Willemsen; Jevon Plunkett; Louis J Muglia; Dorret I Boomsma |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't; Twin Study Date: 2008-03-04 |
Journal Detail:
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Title: American journal of obstetrics and gynecology Volume: 199 ISSN: 1097-6868 ISO Abbreviation: Am. J. Obstet. Gynecol. Publication Date: 2008 Jul |
Date Detail:
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Created Date: 2008-06-30 Completed Date: 2008-07-22 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0370476 Medline TA: Am J Obstet Gynecol Country: United States |
Other Details:
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Languages: eng Pagination: 43.e1-5 Citation Subset: AIM; IM |
Affiliation:
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Department of Pediatrics, Washington University, St Louis, MO, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Environment* Female Humans Male Middle Aged Netherlands Parturition / genetics* Sex Factors Time Factors Twins / genetics* Twins, Dizygotic / genetics Twins, Monozygotic / genetics |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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