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| Content Provider | PubMed Central |
|---|---|
| Author | Baker, J. Tunnicliffe, W. Duncanson, R. Ayres, J. |
| Abstract | BACKGROUND—Type1 brittle asthma is a rare form of asthma. Atopy, psychosocial factorsand diet may contribute to this condition. As increased dietarymagnesium has a beneficial effect on lung function and selenium,vitamins A, C and E have antioxidant properties, a study was undertakento test the hypothesis that patients with brittle asthma have dietsdeficient in these nutrients compared with subjects with non-brittleasthma and healthy adults. METHODS—A case controlstudy of the dietary intakes of 20 subjects with brittle asthma, 20 with non-brittle asthma, and 20 healthy adults was performed using fiveday weighed dietary records. Intake of magnesium was the primaryoutcome measure with selenium and vitamins A, C and E as secondaryoutcomes. Serum levels were measured at the same time as the dietary assessment. RESULTS—Sixty subjects(27 men) of mean age 49.5 years were recruited and completed the study.Subjects with brittle asthma had statistically lower median dietaryintakes of vitamins A and E than the other groups (vitamin A: brittleasthma 522.5 µg/day, non-brittle asthma 869.5 µg/day, healthyadults 806.5 µg/day; vitamin E: brittle asthma 4.3 mg/day,non-brittle asthma 4.6 mg/day, healthy adults 4.5 mg/day). Mediandietary intakes for the other nutrients were not significantlydifferent between groups. Serum levels were within normal ranges foreach nutrient in all subjects. Intakes less than the reference nutrientintake (RNI) for magnesium and vitamins A and C, and less than the safeintake (SI) for vitamin E were more likely in patients with brittleasthma than in those with non-brittle asthma. CONCLUSION—Nutrientdeficiency and reduced antioxidant activity may contribute to diseaseactivity in type 1 brittle asthma, although a prospective study ofreplacement therapy will be needed to confirm this hypothesis. |
| Starting Page | 115 |
| File Format | |
| ISSN | 14683296 |
| e-ISSN | 14683296 |
| Journal | Thorax |
| Issue Number | 2 |
| Volume Number | 54 |
| Language | English |
| Publisher | BMJ Group |
| Publisher Date | 1999-02-01 |
| Access Restriction | Open |
| Rights Holder | BMJ Group |
| Subject Keyword | Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Pulmonary and Respiratory Medicine |
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