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Is Chlamydia pneumoniae infection associated with stroke in children with sickle cell disease?

Meenakshi Goyal1, Scott T Miller, Margaret R Hammerschlag

  • 1Division of Hematology-Oncology, Department of Pediatrics, State University of New York, Downstate Medical Center, Brooklyn, New York 11203-2098, USA.

Pediatrics
|April 3, 2004
PubMed

Insights

This study found no link between Chlamydia pneumoniae infection and stroke in children with sickle cell disease (SCD). Further research is needed to understand stroke causes in this vulnerable population.

Area of Science:

  • Pediatric Neurology
  • Infectious Diseases
  • Hematology

Background:

  • Stroke is a serious complication of sickle cell disease (SCD), often caused by cerebral blood vessel disease.
  • Intimal hyperplasia, a key feature of SCD-related stroke, is hypothesized to stem from inflammation similar to atherosclerosis, potentially linked to Chlamydia pneumoniae infection.

Purpose of the Study:

  • To investigate the association between Chlamydia pneumoniae infection and cerebrovascular disease in children with SCD.
  • This includes evaluating stroke, transient ischemic attacks, and abnormal transcranial Doppler findings.

Main Methods:

  • The study enrolled children with SCD (with and without stroke history), healthy controls, and transfused children.
  • Peripheral blood and nasopharyngeal swabs were collected for Chlamydia pneumoniae detection using cell culture and polymerase chain reaction (PCR) on peripheral blood monocytic cells (PBMCs).

Main Results:

  • Chlamydia pneumoniae DNA was detected in a small percentage of children across all groups, including those with SCD and controls.
  • No significant association was found between Chlamydia pneumoniae detection and stroke or cerebrovascular disease in children with SCD.
  • Positive nasopharyngeal cultures in some children did not correlate with detectable Chlamydia pneumoniae DNA in their PBMCs.

Conclusions:

  • The findings suggest that Chlamydia pneumoniae infection is not associated with stroke in the studied population of children with sickle cell disease.
  • Further research may be needed to elucidate the specific causes of cerebrovascular disease in pediatric SCD.
Abstract

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