腹部肥胖和晚发型哮喘:3C研究的横断面分析和纵向分析结果
2011/11/22
摘要
已有研究显示,采用BMI评价的整体肥胖水平与哮喘风险增加相关,但有关腹部肥胖与哮喘关系了解较少。哮喘研究很少选择老年人群,随着老年人肌量的下降,腹部肥胖呈现增加趋势。本试验选取大样本老年队列,分析了腹部肥胖[通过腰围来(wc)评价]与哮喘发病率、患病率之间的关系。横断面研究选择了年龄≥65岁的7643例老年患者,这些患者经医生诊断,长期患有哮喘。纵向分析在6267例基线状态下无哮喘的老年人中进行,随访4年,其中67例出现了哮喘。基于性别特异性(男性/女性)标准,基线状态下的WC分为以下三类:<94/80 cm (参考值)、[94-102]/[80-88](腹部超重)、≥102/88(腹部肥胖)。对年龄、性别、教育水平、吸烟状态、BMI、体力活动、呼吸困难、慢性支气管炎症状和心血管病史等因素进行调整后,采用Logistic 和Cox回归模型估计WC相关的哮喘风险。哮喘风险随着基线状态的WC的增加而增加,该关系不依赖于BMI和其他混杂因素(调整后优势比[ORa],95%可信区间(CI):1.30, 1.02-1.65 [腹部超重];1.76, 1.31-2.36 [腹部肥胖])。哮喘发病率与WC相关(优势比[HRa], 95% CI: 2.69, 1.21-5.98 [腹部超重],3.84, 1.55-9.49 [腹部肥胖])。男女性别的估计值相似。老年人腹部肥胖分别与哮喘患病率和发病率相关。今后有必要对肥胖和哮喘相关性的可能机制做进一步研究。
(刘国梁 审校)
Obesity (Silver Spring). 2011 Oct 20. doi: 10.1038/oby.2011.308. [Epub ahead of print]
Abdominal Obesity and Late-Onset Asthma: Cross-Sectional and Longitudinal Results: The 3C Study.
Leone N, Courbon D, Berr C, Barberger-Gateau P, Tzourio C, Alpérovitch A, Zureik M.
Source
INSERM U700, Faculté de Médecine Xavier Bichat, Paris, France.
Abstract
Whereas global obesity assessed by BMI has been related to asthma risk, little is known as to the potential implication of abdominal adiposity in this relationship. In the elderly, in whom asthma remains poorly studied, abdominal adiposity tends to increase at the expense of muscle mass. The purpose of this study was to investigate the association between abdominal adiposity, assessed by waist circumference (WC), and prevalence and incidence of asthma in a large elderly cohort. Cross-sectional analysis was based on 7,643 participants aged ≥65 years including 592 (7.7%) with lifetime physician-diagnosed asthma. Longitudinal analysis involved 6,267 baseline nonasthmatics followed-up for a period of 4 years, 67 of whom exhibited incident asthma. Baseline WC was categorized according to sex-specific criteria (men/women): <94/80 cm (reference), [94-102[/[80-88[ (abdominal overweight), and ≥102/88 (abdominal obesity). Logistic and Cox regression models estimated asthma risk associated with WC after adjustment for age, sex, educational level, smoking status, BMI, physical ability, dyspnea, chronic bronchitis symptoms and history of cardiovascular disease. At baseline, asthma risk increased with increasing WC independently of BMI and other confounders (adjusted odds ratio (ORa), 95% confidence interval (CI): 1.30, 1.02-1.65 and ORa: 1.76, 1.31-2.36 for abdominal overweight and obesity, respectively). Asthma incidence was related to WC (hazard ratio (HRa), 95% CI: 2.69, 1.21-5.98 and HRa: 3.84, 1.55-9.49, for abdominal overweight and obesity, respectively). Estimates were similar in both sexes. In the elderly, abdominal adiposity was independently associated with increased prevalence and incidence of asthma. Studies aiming to understand the mechanisms involved in the adiposity-asthma link are needed.
Obesity (Silver Spring). 2011 Oct 20. doi: 10.1038/oby.2011.308. [Epub ahead of print]
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