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Related Experiment Videos

Intact splenic function in cystic fibrosis

N J Barrios1, M Kiernan, R Beckerman

  • 1Department of Pediatrics, All Children's Hospital, St Petersburg, Florida 33701.

Journal of the National Medical Association
|April 1, 1994
PubMed
Summary

Patients with cystic fibrosis (CF) have normal spleen function, which may explain why they rarely develop serious blood infections like bacteremia or septicemia despite chronic lung infections.

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Area of Science:

  • Immunology
  • Hematology
  • Pulmonology

Background:

  • Patients with cystic fibrosis (CF) experience chronic pulmonary infections.
  • CF patients rarely develop bacteremia or septicemia, suggesting intact immune defenses.
  • Splenic function is crucial for clearing bacteria from the bloodstream.

Purpose of the Study:

  • To evaluate splenic function in patients with cystic fibrosis.
  • To determine if normal splenic function contributes to the rarity of bacteremia/septicemia in CF.

Main Methods:

  • Assessed splenic function in 25 CF patients (ages 2-37) using erythrocyte pit count.
  • Utilized direct interference contrast microscopy for analysis.
  • Compared results with patients with sickle cell disease and healthy controls.

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Main Results:

  • All CF patients exhibited normal splenic function, indicated by erythrocyte pit counts.
  • Mean pitted erythrocyte percentage in CF patients was comparable to healthy controls.
  • No CF patients experienced episodes of bacteremia or septicemia.

Conclusions:

  • Splenic function in cystic fibrosis patients is unabridged.
  • Intact splenic mononuclear phagocyte function likely accounts for the rarity of bacteremia/septicemia in CF.
  • This finding highlights a key protective mechanism in CF patients despite chronic infections.