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Related Experiment Videos

[Chromosome aberrations in malformed newborns].

F Centeno Malfaz1, A Beltrán Pérez, C Ruiz Labarga

  • 1Servicio de Pediatría. Hospital Universitario del Río Hortega. Valladolid. centeno@uva.es

Anales Espanoles De Pediatria
|June 20, 2001
PubMed
Summary

Chromosome abnormalities affect 5.4% of newborns with birth defects, with Down's syndrome being the most common. Maternal age over 35 is a significant risk factor for Down's syndrome.

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Area of Science:

  • Medical Genetics
  • Human Genetics
  • Reproductive Medicine

Context:

  • Congenital malformations represent a significant public health concern.
  • Understanding the prevalence and types of chromosomal abnormalities is crucial for genetic counseling and prenatal diagnostics.
  • Maternal age is a known risk factor for certain chromosomal aneuploidies.

Purpose:

  • To determine the prevalence of chromosome abnormalities in newborns with congenital defects.
  • To analyze the types of chromosomal anomalies and their distribution.
  • To investigate the relationship between maternal age and the frequency of these abnormalities.

Summary:

  • A study of 33,562 newborns identified 1,409 with malformations, of which 5.4% had chromosome abnormalities.

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  • Down's syndrome was the most frequent abnormality, with a prevalence of 0.17% in the general population.
  • Higher maternal age (over 35) was associated with an increased prevalence of Down's syndrome, with a trend towards younger maternal age over time.

    • Impact:

    • Provides crucial epidemiological data on chromosomal abnormalities in malformed newborns.
    • Highlights the continued importance of maternal age in assessing Down's syndrome risk.
    • Informs genetic counseling strategies and public health initiatives for congenital malformations.