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how simple much of this could be addressed if the truth were told just one in the mainstream media.... perhaps a whole frigging week of it. There are 34 pages of 20 articles each for asthma antioxidants on PUBMED...., for pennies a day, millions of dollars and untold suffering could be done away with. Imagine that. 1: J Asthma. 2004;41(8):825-32. Related Articles, Links Pycnogenol as an adjunct in the management of childhood asthma. Lau BH, Riesen SK, Truong KP, Lau EW, Rohdewald P, Barreta RA. Division of Microbiology and Molecular Genetics, Department of Biochemistry and Microbiology, School of Medicine, Loma Linda University, Loma Linda, California 92350, USA. bLau@som.llu.edu A randomized, placebo-controlled, double-blind study involving 60 subjects, aged 6-18 years old, was conducted over a period of 3 months to determine the effect of Pycnogenol (a proprietary mixture of water-soluble bioflavonoids extracted from French maritime pine) on mild-to-moderate asthma. After baseline evaluation, subjects were randomized into two groups to receive either Pycnogenol or placebo. Subjects were instructed to record their peak expiratory flow with an Assess Peak Flow Meter each evening. At the same time, symptoms, daily use of rescue inhalers (albuterol), and any changes in oral medications were also recorded. Urine samples were obtained from the subjects at the end of the run-in period, and at 1-, 2-, and 3-month visits. Urinary leukotriene C4/D4/E4 was measured by an enzyme immunoassay. Compared with subjects taking placebo, the group who took Pycnogenol had significantly more improvement in pulmonary functions and asthma symptoms. The Pycnogenol group was able to reduce or discontinue their use of rescue inhalers more often than the placebo group. There was also a significant reduction of urinary leukotrienes in the Pycnogenol group. The results of this study demonstrate the efficacy of Pycnogenol as an adjunct in the management of mild-to-moderate childhood asthma. Publication Types: * Clinical Trial * Randomized Controlled Trial PMID: 15641632
1: Am J Clin Nutr. 2005 Jan;81(1 Suppl):317S-325S. Related Articles, Links Click here to read Polyphenols and disease risk in epidemiologic studies.
Arts IC, Hollman PC.
RIKILT-Institute of Food Safety, Wageningen University and Research Centre, Wageningen, The Netherlands. ilja.arts@wur.nl
Plant polyphenols, a large group of natural antioxidants, are serious candidates in explanations of the protective effects of vegetables and fruits against cancer and cardiovascular diseases. Epidemiologic studies are useful for evaluation of the human health effects of long-term exposure to physiologic concentrations of polyphenols, but reliable data on polyphenol contents of foods are still scarce. The aim of this review is to summarize available epidemiologic data on the health effects of polyphenols, focusing on the flavonoid subclasses of flavonols, flavones, and catechins and on lignans. Data obtained to date suggest beneficial effects of both flavonoids and lignans on cardiovascular diseases but not on cancer, with the possible exception of lung cancer. There is a need for more research on stroke and lung diseases such as asthma and chronic obstructive pulmonary disease. Most studies to date have included only flavonols and flavones. With data becoming available for other polyphenols, these compounds should be included in future studies. Careful design of prospective studies is important to offset some of the major drawbacks of epidemiologic studies, including residual confounding (by smoking and other dietary factors) and exposure assessment.
Publication Types:
* Review
PMID: 15640497
1: Eur J Clin Nutr. 2005 Jan;59(1):8-15. Related Articles, Links Click here to read Dietary intake of fatty acids, antioxidants and selected food groups and asthma in adults.
Nagel G, Linseisen J.
Division of Clinical Epidemiology, DKFZ German Cancer Research Center, Heidelberg, Germany. g.nagel@dkfz-heidelberg.de
OBJECTIVE: Within a prospective study, we explored the associations between dietary intake of fatty acids, antioxidants and relevant food sources of these nutrients on the clinical manifestation of asthma in adulthood. METHOD: A total of 105 newly physician-diagnosed cases of asthma from the European Prospective Investigation into Cancer and Nutrition (EPIC)-Heidelberg cohort were identified during follow-up and matched with 420 controls. Baseline dietary intake was obtained by means of validated food frequency questionnaires. The association of dietary intake variables and asthma risk was explored by unconditional logistic regression models. RESULTS: A high intake of oleic acid (C18:1 n-9) was positively associated with asthma (P-value for trend 0.035), while no significant associations were found for the other dietary fatty acids. Most prominently, a high margarine intake increased the risk of onset of asthma in adulthood (adjusted odds ratio (OR) 3rd tertile: 1.73 (95% confidence interval (95% CI): 1.05-2.87), P for trend=0.050), the effect being stronger in men (2nd tertile: OR=1.66, 3rd tertile: OR=2.51) than in women (2nd tertile: OR=0.91; 3rd tertile: OR=1.47). The dietary intake of antioxidants and their main food sources had no effect on asthma risk. CONCLUSIONS: In summary, the present results provide evidence that even in adulthood a high margarine intake increases the risk of clinical onset of asthma. Whether oleic acid may serve as a proxy for margarine-derived trans-fatty acids (C18:1 t9) remains to be clarified.
PMID: 15329676
1: J Allergy Clin Immunol. 2004 Aug;114(2):429-35. Related Articles, Links Click here to read alpha-Lipoic acid inhibits airway inflammation and hyperresponsiveness in a mouse model of asthma.
Cho YS, Lee J, Lee TH, Lee EY, Lee KU, Park JY, Moon HB.
Division of Allergy, Asan Medical Center, University of Ulsan College of Medicine, South Korea.
BACKGROUND: Oxidative stress may play an important role in the pathogenesis of bronchial asthma. OBJECTIVE: We evaluated the therapeutic effect of alpha-lipoic acid, a nonenzymatic antioxidant, in a mouse model of asthma. METHODS: BALB/c mice were immunized intraperitoneally with ovalbumin (OVA) on days 1 and 14 and challenged with inhaled OVA on days 28, 29, and 30. Mice were fed OVA-free standard mouse chow with 0%, 0.125%, 0.25%, 0.5%, and 1% (wt/wt) alpha-lipoic acid during the immunization and challenge periods. On day 31, mice were challenged with inhaled methacholine, and enhanced pause was measured as an index of airway hyperresponsiveness. Severity of airway inflammation was determined by means of differential cell count of bronchoalveolar lavage (BAL) fluid and by means of histopathologic lung analysis. Levels of OVA-specific IgE in serum, IL-4 and IL-5 in BAL fluid, and intracellular reactive oxygen species in alveolar macrophages and lymphocytes obtained from regional perihilar lymph nodes were measured. Nuclear factor kappaB DNA-binding activity in lung tissues was analyzed by means of electrophoretic gel mobility shift assay. RESULTS: Compared with untreated asthmatic mice, mice treated with alpha-lipoic acid had significantly reduced airway hyperresponsiveness, a lower proportion of eosinophils among BAL cells, and significantly improved pathologic lesion scores of the lungs. alpha-Lipoic acid also significantly reduced serum OVA-specific IgE concentrations, IL-4 and IL-5 concentrations in BAL fluid, and intracellular reactive oxygen species and nuclear factor kappaB DNA-binding activity. CONCLUSION: These results suggest that oxidative stress plays an important role in asthmatic airway inflammation and that alpha-lipoic acid may be useful as adjuvant therapy for bronchial asthma.
PMID: 15316528
1: Am J Epidemiol. 2004 Feb 15;159(4):351-7. Related Articles, Links Click here to read Serum vitamin levels and the risk of asthma in children.
Harik-Khan RI, Muller DC, Wise RA.
Clinical Research Branch, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA.
Dietary intake, especially of antioxidant vitamins A, C, E, and the carotenoids, has been linked with the presence and severity of asthma. From the Third National Health and Nutrition Examination Survey (NHANES III), conducted in the United States between 1988 and 1994, the authors selected 4,093 children (aged 6-17 years) for whom relevant medical, socioeconomic, and anthropometric data were complete. The children were 50.6% female, and 9.7% reported a diagnosis of asthma. Bivariate analyses showed that asthma diagnosis was associated with lower levels of serum vitamin C, alpha-carotene, beta-carotene, and beta-cryptoxanthin. However, antioxidant levels may be surrogate markers for socioeconomic variables such as race, poverty, tobacco exposure, or general nutritional status. In logistic models that included age, body mass index, socioeconomic variables, antioxidant levels, parental asthma, and household smoking, the only antioxidants significantly associated with asthma were vitamin C (odds ratio = 0.72 per mg/dl, 95% confidence interval = 0.55, 0.95) and alpha-carotene (odds ratio = 0.95 per micro g/dl, 95% confidence interval = 0.90, 0.99). The odds ratio for asthma in the highest quintile of serum vitamin C relative to the lowest was 0.65 (p < 0.05), whereas it was 0.74 for alpha-carotene (p = 0.066). The authors concluded that low vitamin C and alpha-carotene intakes are associated with asthma risk in children.
PMID: 14769638
1: Curr Allergy Asthma Rep. 2004 Mar;4(2):116-22. Related Articles, Links
Oxidative stress in the pathogenesis of asthma.
Bowler RP.
National Jewish Medical and Research Center, K736a, 1400 Jackson Street, Denver, CO, 80206, USA. BowlerR@njc.org
Asthma affects 5% to 10% of the population of the United States. In asthmatics, oxidative stress occurs not only as a result of inflammation but also from environmental exposure to air pollution. The specific localization of antioxidants in the lung and the adaptive changes during asthma underscore the importance of oxidative stress, and therapeutic interventions that decrease exposure to environmental reactive oxygen species or augment endogenous antioxidant defenses might be beneficial as adjunctive therapies in asthmatic patients.
Publication Types:
* Review * Review, Tutorial
PMID: 14769260
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