title: Effects of vitamin C and E intake on peak expiratory flow rate of asthmatic children exposed to atmospheric particulate matter.
abstract: One hundred eighty-four asthmatic children were selected from 8 schools in Tainan City (high PM(10) [particulate matter with aerodynamic diameter <10 μm] exposure) and Hualien County (low PM(10) exposure) in Taiwan, and completed records of dietary consumption, daily peak expiratory flow rate (PEFR), and daily respiratory symptoms for 1 week. The higher prevalence of PEFR less than 80% predicted was found in children of high-exposure district than of low-exposure one, as well as in subjects with high intake of vitamin E than those who took less vitamin E. Furthermore, the risk of declining PEFR appeared to significantly decrease for subjects with both high intake of vitamins C and E and residing in area of low PM(10) levels as compared with those with low intake of vitamins C and E and residing in high-exposure area. The beneficiary effect of vitamin C and E intake on PEFR improvement for asthmatic children with low air pollution is suggested.
authors: Department of Environmental and Occupational Health, Medical College, National Cheng Kung University, Tainan, Taiwan.
authors: Huey-Jen
authors: HJ
authors: Su
authors: Chih-Hui
authors: CH
authors: Chang
authors: Hsiu-Ling
authors: HL
authors: Chen
mesh_terms: D000393:Air Pollutants / Q000032:analysis / Q000633:toxicity*; D001205:Ascorbic Acid / Q000378:metabolism*; D001249:Asthma / Q000139:chemically induced / Q000503:physiopathology*; D002648:Child; D004032:Diet; D004781:Environmental Exposure; D005260:Female; D006801:Humans; D019570:Inhalation Exposure / Q000009:adverse effects*; D008297:Male; D010316:Particle Size; D052638:Particulate Matter / Q000032:analysis / Q000633:toxicity*; D010366:Peak Expiratory Flow Rate / Q000187:drug effects*; D011795:Surveys and Questionnaires; D013624:Taiwan / Q000453:epidemiology; D014810:Vitamin E / Q000378:metabolism*
chemical_list: D000393:Air Pollutants; D052638:Particulate Matter; D014810:Vitamin E; D001205:Ascorbic Acid