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Cystic fibrosis in Asians
I M Bowler1, E J Estlin, J M Littlewood
1Regional Cystic Fibrosis Unit, St James's University Hospital, Leeds.
Archives of Disease in Childhood
|January 1, 1993
Summary
Pakistani Asian cystic fibrosis patients experienced a more severe disease course, including earlier Pseudomonas aeruginosa infection and poorer respiratory function, compared to non-Asian controls. Genetic and environmental factors may contribute to these differences.
Area of Science:
- Pulmonology
- Genetics
- Clinical Medicine
Background:
- Cystic fibrosis (CF) affects diverse populations globally.
- Understanding ethnic variations in CF clinical presentation is crucial for tailored care.
Purpose of the Study:
- To compare the clinical course of cystic fibrosis in Pakistani Asian patients versus non-Asian controls.
- To identify potential contributing factors to observed differences.
Main Methods:
- Retrospective comparison of nine Pakistani Asian CF patients with 18 age- and sex-matched non-Asian controls.
- Analysis of clinical data including age at Pseudomonas aeruginosa infection, respiratory function tests, immunoglobulin G levels, and nutritional status.
- Genotyping for the delta F508 mutation.
Main Results:
- Pakistani Asian patients acquired Pseudomonas aeruginosa earlier (4.0 vs. 7.5 years) and exhibited lower respiratory function (FVC 58.5% vs. 76.8%, FEV1 79.8% vs. 100.3%).
- Higher immunoglobulin G levels (13.4 vs. 10.1 g/L) and poorer weight parameters (weight-for-age 78.4% vs. 95.7%) were noted in Asian patients despite similar energy intake.
- The delta F508 mutation was present in 4/9 Asian patients versus 17/18 controls. Maternal English language difficulties were reported for 7/7 Pakistani-born mothers.
Conclusions:
- Pakistani Asian individuals with cystic fibrosis may experience a more severe clinical trajectory.
- Both genetic predisposition (delta F508 mutation) and environmental factors (e.g., language barriers impacting care) likely play a role in CF severity within this population.