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Evidence of arteriolar narrowing in low-birth-weight children

Paul Mitchell1, Gerald Liew, Elena Rochtchina

  • 1Centre for Vision Research, Department of Ophthalmology, University of Sydney, Westmead Hospital, Hawkesbury Rd, Westmead, New South Wales, Australia. paul_mitchell@wmi.usyd.edu.au

Circulation
|July 16, 2008
PubMed

Insights

Poor in utero growth, indicated by lower birth weight, is linked to narrower retinal arterioles in children. This finding suggests early growth impacts vascular development, potentially influencing future cardiovascular health.

Area of Science:

  • Pediatric cardiovascular health
  • Developmental origins of health and disease (DOHaD)

Background:

  • Cardiovascular disease risk may originate during fetal development.
  • The impact of in utero growth on childhood microvascular structure remains unclear.

Purpose of the Study:

  • To investigate the association between in utero growth markers and retinal microvascular caliber in children.
  • To test the hypothesis that poor in utero growth leads to narrower arterioles, potentially explaining links to hypertension.

Main Methods:

  • A population-based study of 1369 six-year-old children in Sydney, Australia.
  • Retinal arteriolar and venular calibers measured using a computer-assisted method on digitized retinal photographs.
  • Birth weight, length, and head circumference obtained from parental records.

Main Results:

  • Lower birth weight, shorter birth length, and smaller head circumference were significantly associated with narrower retinal arteriolar caliber.
  • Each kilogram decrease in birth weight correlated with a 2.3-mum reduction in arteriolar caliber, adjusting for multiple factors.
  • Similar associations were found for birth length and head circumference with arteriolar caliber.

Conclusions:

  • Children with poorer in utero growth exhibit narrower retinal arterioles.
  • These findings support the hypothesis that adverse in utero growth negatively impacts microvascular structure development.
Abstract

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