Novel relationship of serum cholesterol with asthma and wheeze in the United States
ABSTRACT Cholesterol exerts complex effects on inflammation. There has been little investigation of whether serum cholesterol is associated with asthma, an inflammatory airways disease with great public health impact.
To determine relationships between levels of 3 serum cholesterol measures (total cholesterol [TC], high-density lipoprotein cholesterol [HDL-C], and non-HDL-C) and asthma/wheeze in a sample representative of the US population.
Cross-sectional study of 7005 participants age >or=6 years from the 2005 to 2006 National Health and Nutrition Examination Survey.
Serum TC and non-HDL-C were lower in patients with current asthma than in subjects without current asthma in the overall population (TC, 188.5 vs 192.2 mg/dL; non-HDL-C, 133.9 vs 137.7 mg/dL; P < .05 for both), whereas HDL-C was not different. Adjusted odds ratios (ORs) from multivariate logistic regression per 1-SD increase of TC and non-HDL-C for current asthma were 0.92 (95% CI, 0.86-0.98) and 0.91 (95% CI, 0.85-0.98), respectively. On racial/ethnic stratification, these relationships reflect marked reductions unique to Mexican Americans (MAs; TC, 171.4 vs 189.3 mg/dL; P < .001; OR, 0.62; 95% CI, 0.48-0.80; non-HDL-C, 119.8 vs 137.9 mg/dL; P < .001; OR, 0.62; 95% CI, 0.48-0.79). Among MAs, the adjusted OR for wheeze requiring medical attention was 0.57 (95% CI, 0.43-0.75) for TC and 0.53 (95% CI, 0.33-0.85) for non-HDL-C. Relationships between cholesterol and asthma/wheeze were independent of body mass index and serum C-reactive protein, and similar between atopic and nonatopic participants.
Serum TC and non-HDL-C are inversely related to asthma in the US population, chiefly reflecting a relationship among MAs.
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ABSTRACT: The joint effect of obesity and asthma on hyperlipidemia has never been explored. We aim to examine (1) the association of dyslipidemia and asthma, (2) the interaction effect of asthma and obesity on hyperlipidemia, and (3) whether a gender difference existed in the above relationships. Between 2009 and 2010, 10- to 15-year-old children were recruited from 7 schools and 2 hospitals in Northern Taiwan. The population consisted of 237 asthmatic children and 225 non-asthmatic controls, and was further divided into four groups: non-obese controls, obese controls, non-obese asthmatics, and obese asthmatics. Measurements included anthropometric measures and blood samples for analysis of metabolic factors. The Cook's criteria were used to define childhood metabolic syndrome. General linear models were used to analyze how lipid profiles were associated with obesity and asthma. Total cholesterol and low density lipoprotein cholesterol levels increased progressively in the group order obese asthmatics>non-obese asthmatics>obese controls>non-obese controls. In boys, low density lipoprotein cholesterol levels were significantly higher in obese asthmatics compared to obese non-asthmatics, with a mean difference of 6.2mmol/L in the general linear model. We also discovered a significant interactive effect of obesity and asthma on hyperlipidemia in boys (p for interaction=0.03). Asthma was associated with higher low density lipoprotein cholesterol levels and this association was amplified in overweight and obese subjects. A gender difference was observed in the joint effect of obesity and asthma on hyperlipidemia.01/2013; 7(1):20-5. DOI:10.1016/j.dsx.2013.02.026
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ABSTRACT: The association between obesity and asthma is well known but there is few information that relates metabolic syndrome with asthma. Both diseases share pathophysiologic bases, including inflammation, which suggests that they could present associated events. To determine the prevalence of metabolic syndrome in asthmatic adult individuals and its association with the severity of asthma. In this cross-sectional and comparative study we included thirty-nine asthmatic allergic patients from an outpatient clinic of Allergy and Clinical Immunology. For every patient we measured blood glucose, glycosilated hemoglobin, lipids profile, erithrocyte sedimentation rate and reactive C protein. Patients were classified in: group I asthma with metabolic syndrome and group II asthma without metabolic syndrome, according to the criteria for ATP III. Chi square test, Shapiro-Wilks, ANOVA, Kruskal Wallis test and Fisher exact test were used for the statistical analysis. The prevalence of metabolic syndrome in the evaluated sample was 28.2%, and this does not show an association between the metabolic syndrome and the degree of asthma severity (x2 =2.58). We did not find diabetes mellitus type II cases in our sample, according with their glucose level. Four patients showed systemic arterial hypertension. In ten patients we found low HDL level and in nine of them triglyceride levels were elevated. In a third of the patients we found eosinophilia. The prevalence of metabolic syndrome in asthmatic patients is similar to the one reported in the general population. There was no association between the presence of metabolic syndrome and the severity of asthma, but there exists a trend that suggests that the metabolic syndrome could influence the severity of asthma.Alergia 59(1):3-8.
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ABSTRACT: Cholesterol promotes Th2 immunity and allergic inflammation in rodents; whether this occurs in humans is unclear. Reports of both direct and inverse associations between serum cholesterol and atopy in different populations suggest that race and/or other demographic variables may modify these relationships. Aims OF THE STUDY: To determine the relationships between levels of three serum cholesterol measures [total cholesterol (TC), high density lipoprotein-cholesterol (HDL-C), and non-HDL-C] and atopy in a sample representative of the US population. Cross-sectional study of 6854 participants aged > or =6 years from the 2005-2006 National Health and Nutrition Examination Survey. In the overall population, adjusted odds ratios (AORs) per two-standard deviation increase in TC and non-HDL-C for biochemical atopy (defined as > or =1 allergen-specific IgE to 19 allergens) were 1.17 [95% confidence interval (CI), 1.00-1.38] and 1.19 (95% CI, 1.03-1.39), respectively. Interactions by race were noted for the two relationships (interaction P = 0.004 and P = 0.009, respectively) with non-Hispanic Whites (NHWs) having direct relationships [TC: AOR 1.27 (95% CI, 1.03-1.57); non-HDL-C: AOR 1.27 (95% CI, 1.03-1.56)] and non-Hispanic Blacks (NHBs) inverse relationships [TC: AOR 0.77 (95% CI, 0.62-0.95); non-HDL-C: AOR 0.86 (95% CI, 0.69-1.08)]. The adjusted HDL-C-atopy relationship was nonsignificant for NHWs and inverse for NHBs [AOR 0.77 (95% CI, 0.61-0.96)]. Relationships were independent of body mass index and serum C-reactive protein and unmodified by corticosteroid or statin usage. Results were similar using current hay fever/allergy as the atopy outcome. There are marked inter-racial differences in the relationship between serum cholesterol and atopy in the US population.Allergy 12/2009; 65(7):859-64. DOI:10.1111/j.1398-9995.2009.02287.x · 6.00 Impact Factor