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Endocrinology

Pre- and Perinatal Factors Influence Risk of Islet Autoimmunity in Early Childhood

Strategic Insights

— 1 min read

Researchers from the University of Colorado have made a significant discovery regarding the risk factors associated with islet autoimmunity in early childhood. The study, published in the American Journal of Epidemiology, examines the relationship between pre- and perinatal factors and the development of islet autoimmunity in children at genetically increased risk of type 1 diabetes. The findings suggest that complicated delivery and increasing maternal age are significant predictors of islet autoimmunity in early childhood.

Key Takeaways:

  • Complicated delivery, defined as breech, forceps, or vacuum extraction, is associated with a higher risk of islet autoimmunity (hazard ratio = 2.10, 95% confidence interval: 1.09, 4.05).
  • Increasing maternal age is related to the risk of islet autoimmunity among first-degree relatives of persons with type 1 diabetes (hazard ratios = 3.96 and 8.88 for maternal ages 25-34 and greater than or equal to 35 years, respectively).
  • The study collected data from a birth cohort of 938 newborns with diabetes-associated human leukocyte antigen genotypes and 428 offspring or siblings of persons with type 1 diabetes.
  • The researchers conclude that influences in utero or during delivery may affect the fetal immune system.
  • The study was conducted from January 1994 to February 2003, and the data were collected through blood draws at ages 9, 15, and 24 months, and yearly thereafter.

Statistics:

  • 938 newborns with diabetes-associated human leukocyte antigen genotypes were examined in the study.
  • 428 offspring or siblings of persons with type 1 diabetes were included in the study.
  • The mean follow-up period for the study was 3.9 years.
  • For maternal ages 25-34, the hazard ratio for islet autoimmunity was 3.96.
  • For maternal ages greater than or equal to 35 years, the hazard ratio for islet autoimmunity was 8.88.

Sources:

  • American Journal of Epidemiology (Perinatal factors and development of islet autoimmunity in early childhood - The diabetes autoimmunity study in the young. Am J Epidemiol, 2004;160(1):3-10).
  • University of Colorado, Health Science Center, Barbara Davis Center Childhood Diabetes (Contact information: M. Rewers, 4200 E 9th Ave., Box B-140, Denver, CO 80262 USA).

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