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Paternal age and preeclampsia
Susan Harlap1, Ora Paltiel, Lisa Deutsch
1Department of Obstetrics and Gynecology and Kaplan Cancer Center, New York University School of Medicine, New York, NY 10016, USA. harlas01@popmail.med.nyu.edu
Insights
Advanced paternal age increases preeclampsia risk. This study suggests that new genetic mutations from older fathers may contribute to preeclampsia development in offspring.
Area of Science:
- Reproductive biology
- Genetics
- Obstetrics
Background:
- Paternal aging can cause genetic damage in sperm, introducing new mutations.
- The potential contribution of paternal age to preeclampsia development is not well understood.
Purpose of the Study:
- To investigate the association between paternal age and the incidence of preeclampsia.
- To determine if increased paternal age is an independent risk factor for preeclampsia.
Main Methods:
- Analysis of 81,213 deliveries from the Jerusalem Perinatal Study (1964-1976).
- Logistic regression was used to control for maternal age, parity, and other risk factors.
Main Results:
- Preeclampsia occurred in 1.6% of deliveries.
- Paternal age groups showed increased odds ratios for preeclampsia: 1.25 for fathers <25, 1.24 for fathers 35-44, and 1.80 for fathers 45+.
- Paternal age effects were consistent across subgroups, though weaker than maternal age effects.
Conclusions:
- Findings support the hypothesis that paternal age contributes to preeclampsia risk.
- A portion of preeclampsia cases may be attributable to new mutations acquired from older fathers.
- This adds to evidence linking paternal age to adverse birth outcomes.
Background:
Paternal aging is associated with premeiotic damage to spermatogonia, a mechanism by which new point mutations are introduced into the gene pool. We hypothesized that paternal age might contribute to preeclampsia.
Methods:
We studied the incidence of preeclampsia in 81,213 deliveries surveyed in 1964-1976 in the Jerusalem Perinatal Study. We controlled for maternal age, parity and other risk factors using logistic regression.
Results:
Preeclampsia was reported in 1303 deliveries (1.6%). Compared with fathers age 25-34 years, the odds ratios (ORs) for preeclampsia were 1.24 (95% confidence interval = 1.05-1.46) for age 35-44 and 1.80 (1.40-2.31) for age 45+. For fathers age <25, the OR was 1.25 (1.04-1.51). Although weaker than maternal age effects, paternal effects were consistent within subgroups of other variables.
Conclusions:
These findings support the hypothesis that a modest proportion of preeclampsia might be explained by new mutations acquired from fathers and add to a growing body of evidence for paternal age effects in birth defects, neuropsychiatric disease and neoplasia.