Alberto Cukier

Effects of Aerobic Training on Airway Inflammation in Asthmatic Patients

PURPOSE there is evidence suggesting that physical activity has anti-inflammatory effects in many chronic diseases; however, the role of exercise in airway inflammation in asthma is poorly understood. We aimed to evaluate the effects of an aerobic training program on eosinophil inflammation (primary aim) and nitric oxide (secondary aim) in patients with moderate or severe persistent asthma. METHODS sixty-eight patients randomly assigned to either control (CG) or aerobic training (TG) groups were studied during the period between medical consultations. Patients in the CG (educational program + breathing exercises; N = 34) and TG (educational program + breathing exercises + aerobic training; N = 34) were examined twice a week during a 3-month period. Before and after the intervention, patients underwent induced sputum, fractional exhaled nitric oxide (FeNO), pulmonary function, and cardiopulmonary exercise testing. Asthma symptom-free days were quantified monthly, and asthma exacerbation was monitored during 3 months of intervention. RESULTS at 3 months, decreases in the total and eosinophil cell counts in induced sputum (P = 0.004) and in the levels of FeNO (P = 0.009) were observed after intervention only in the TG. The number of asthma symptom-free days and VO(2max) also significantly improved (P < 0.001), and lower asthma exacerbation occurred in the TG (P < 0.01). In addition, the TG presented a strong positive relationship between baseline FeNO and eosinophil counts as well as their improvement after training (r = 0.77 and r = 0.9, respectively). CONCLUSIONS aerobic training reduces sputum eosinophil and FeNO in patients with moderate or severe asthma, and these benefits were more significant in subjects with higher levels of inflammation. These results suggest that aerobic training might be useful as an adjuvant therapy in asthmatic patients under optimized medical treatment.

Effects of weight loss on asthma control in obese patients with severe asthma

Studies on the effects of weight loss in patients with asthma are scarce. No studies have been performed in patients with severe asthma. Therefore, the aim of the present study was to assess the impact of weight loss in patients with severe asthma associated with obesity. This was an open, prospective, randomised study of two parallel groups, in patients with severe uncontrolled asthma and moderate obesity. The primary outcome was the level of asthma control 6 months after initiation of the weight reduction programme, quantified using the Asthma Control Questionnaire (ACQ). We evaluated clinical parameters, lung function, markers of airway inflammation and circulating cytokines. 22 patients were randomised to undergo treatment for obesity and 11 to the control group. The weight reduction programme was associated with significant improvements in asthma control (mean±se ACQ score 3.02±0.19 to 2.25±0.28 in the treatment group versus 2.91±0.25 to 2.90±0.16 in the controls, p=0.001). This improvement was not accompanied by changes in markers of airway inflammation or bronchial reactivity, but by an increase in forced vital capacity. Our results suggest that weight reduction in obese patients with severe asthma improves asthma outcomes by mechanisms not related to airway inflammation. Weight loss improves outcomes in severely asthmatic obese patients; poor control results from obesity-related factors http://ow.ly/qtG7w

Pulmonary function after coronary artery bypass surgery

Coronary artery bypass graft surgery (CABG) adversely affects pulmonary function tests (PFTs). Although several previous studies have addressed these changes, none has measured the forced vital capacity (FVC) on a daily basis. The purpose of the present study was to assess serial changes in the FVC following CABG and to identify factors that may influence these changes. The FVC was obtained pre- and daily postoperatively (1-10 days) in 120 patients. Fifty-one patients received saphenous vein grafts (SVG group) while 69 received at least one internal mammary artery graft in addition to SVG (IMA group). On the first postoperative day, the FVC decreased to 33% of the pre-operative value in the SVG group and to 29% in the IMA group. The spirometry gradually improved, but after 10 days, the FVC remained reduced (SVG, 70%; IMA, 60%). Although the decreases in FVC tended to be greater in the IMA group, there was no significant difference in the two groups (P = 0.27). The changes in FVC were not significantly related to age (P = 0.48), smoking history (P = 0.65), anesthesia (P = 0.38) or pump time (0.09). From this study, it is concluded that after CABG, there is a significant worsening of the pulmonary function. The nadir of FVC occurs immediately after surgery and improves gradually thereafter. However, on the tenth postoperative day, the FVC still remains more than 30% below pre-operative values. Since there is only a slight tendency for patients undergoing IMA grafting to have larger decreases in their pulmonary function, patients with ventilatory impairment should not be excluded from IMA grafting.

Aerobic training decreases bronchial hyperresponsiveness and systemic inflammation in patients with moderate or severe asthma: a randomised controlled trial

Background The benefits of aerobic training for the main features of asthma, such as bronchial hyperresponsiveness (BHR) and inflammation, are poorly understood. We investigated the effects of aerobic training on BHR (primary outcome), serum inflammatory cytokines (secondary outcome), clinical control and asthma quality of life (Asthma Quality of Life Questionnaire (AQLQ)) (tertiary outcomes). Methods Fifty-eight patients were randomly assigned to either the control group (CG) or the aerobic training group (TG). Patients in the CG (educational programme+breathing exercises (sham)) and the TG (same as the CG+aerobic training) were followed for 3 months. BHR, serum cytokine, clinical control, AQLQ, induced sputum and fractional exhaled nitric oxide (FeNO) were evaluated before and after the intervention. Results After 12 weeks, 43 patients (21 CG/22 TG) completed the study and were analysed. The TG improved in BHR by 1 doubling dose (dd) (95% CI 0.3 to 1.7 dd), and they experienced reduced interleukin 6 (IL-6) and monocyte chemoattractant protein 1 (MCP-1) and improved AQLQ and asthma exacerbation (p<0.05). No effects were seen for IL-5, IL-8, IL-10, sputum cellularity, FeNO or Asthma Control Questionnaire 7 (ACQ-7; p>0.05). A within-group difference was found in the ACQ-6 for patients with non-well-controlled asthma and in sputum eosinophil and FeNO in patients in the TG who had worse airway inflammation. Conclusions Aerobic training reduced BHR and serum proinflammatory cytokines and improved quality of life and asthma exacerbation in patients with moderate or severe asthma. These results suggest that adding exercise as an adjunct therapy to pharmacological treatment could improve the main features of asthma. Trial registration number NCT02033122.

Diaphragmatic Breathing Training Program Improves Abdominal Motion During Natural Breathing in Patients With Chronic Obstructive Pulmonary Disease: A Randomized Controlled Trial

OBJECTIVE To investigate the effects of a diaphragmatic breathing training program (DBTP) on thoracoabdominal motion and functional capacity in patients with chronic obstructive pulmonary disease. DESIGN A prospective, randomized controlled trial. SETTING Academic medical center. PARTICIPANTS Subjects (N=30; forced expiratory volume in 1s, 42%±13% predicted) were randomly allocated to either a training group (TG) or a control group (CG). INTERVENTIONS Subjects in the TG completed a 4-week supervised DBTP (3 individualized weekly sessions), while those in the CG received their usual care. MAIN OUTCOME MEASURES Effectiveness was assessed by amplitude of the rib cage to abdominal motion ratio (RC/ABD ratio) (primary outcome) and diaphragmatic mobility (secondary outcome). The RC/ABD ratio was measured using respiratory inductive plethysmography during voluntary diaphragmatic breathing and natural breathing. Diaphragmatic mobility was measured by ultrasonography. A 6-minute walk test and health-related quality of life were also evaluated. RESULTS Immediately after the 4-week DBTP, the TG showed a greater abdominal motion during natural breathing quantified by a reduction in the RC/ABD ratio when compared with the CG (F=8.66; P<.001). Abdominal motion during voluntary diaphragmatic breathing after the intervention was also greater in the TG than in the CG (F=4.11; P<.05). The TG showed greater diaphragmatic mobility after the 4-week DBTP than did the CG (F=15.08; P<.001). An improvement in the 6-minute walk test and in health-related quality of life was also observed in the TG. CONCLUSIONS DBTP for patients with chronic obstructive pulmonary disease induced increased diaphragm participation during natural breathing, resulting in an improvement in functional capacity.

Air trapping: The major factor limiting diaphragm mobility in chronic obstructive pulmonary disease patients

Background and objective:  Patients with COPD can have impaired diaphragm mechanics. A new method of assessing the mobility of the diaphragm, using ultrasound, has recently been validated. This study evaluated the relationship between pulmonary function and diaphragm mobility, as well as that between respiratory muscle strength and diaphragm mobility, in COPD patients.

Asma e doença pulmonar obstrutiva crônica: uma comparação entre variáveis de ansiedade e depressão

OBJECTIVE: To evaluate the presence and severity of symptoms of anxiety and depression in individuals with asthma or chronic obstructive pulmonary disease. METHODS: In order to evaluate symptoms of anxiety and depression, specific instruments of quantification (the State-Trait Anxiety Inventory and the Beck Depression Inventory, respectively) were administered to patients at an outpatient clinic for the treatment of asthma and chronic obstructive pulmonary disease. The population comprised 189 randomly and prospectively selected patients that were divided into three study groups (each with a different therapeutic objective): 40 patients with controlled asthma, 100 patients with uncontrolled asthma, and 49 patients with chronic obstructive pulmonary disease. Included among the variables studied, as part of the methodology, were symptoms of anxiety and depression. The data obtained were compared taking into consideration demographic and functional aspects, as well as the severity of the symptoms of anxiety and depression. RESULTS: Among the asthma patients, the prevalence of moderate or severe anxiety was significantly higher than that observed among those with chronic obstructive pulmonary disease (p < 0.001). The uncontrolled asthma group presented significantly higher rates of depressive symptoms than did the controlled asthma group (p < 0.05). CONCLUSION: The frequency of symptoms of anxiety and depression is greater among asthma patients than among patients with chronic obstructive pulmonary disease, which can make clinical control difficult.

Profile of a Brazilian population with severe chronic obstructive pulmonary disease

A doenca pulmonar obstrutiva cronica (DPOC) e um problema de saude publica. O tabagismo e a principal causa, porem nao a unica. Poluicao ambiental, exposicao a quimicos, fumaca inalada, tabagismo passivo, infeccoes virais e bacterianas tambem sao considerados fatores de risco importantes. Sexo e peso correlacionam-se com a gravidade da doenca. Co-morbidades sao frequentes. OBJETIVO: Caracterizar uma populacao de pacientes com DPOC acompanhados de forma ambulatorial em um servico terciario de saude. MATERIAL E METODOS: Foram aplicados questionarios padronizados em pacientes com DPOC. Os dados coletados incluiram: sexo, idade, peso, indice de massa corporea (IMC), VEF1 e uso de oxigenio domiciliar, tabagismo, contato com fumaca de lenha, antecedentes de tuberculose pulmonar e molestias associadas. RESULTADOS: Dos 70 pacientes incluidos, 70% eram homens. A media de idade foi de 64 ± 10 anos; de peso, 63 ± 16kg e o IMC medio, de 22 ± 5kg/m². O VEF1 medio do grupo foi 35 ± 14% e 45,7% eram dependentes de oxigenio. Nove (12,8%) nunca fumaram, 78,8% eram ex-tabagistas, com tempo medio de tabagismo de 38 ± 11 anos/maco e nove haviam fumado cigarro de palha. Dezoito (25,7%) tiveram exposicao a fumaca de lenha. Onze (15,7%) relataram tuberculose; 5,7% apresentaram sinais e sintomas de asma; 2,8%, bronquiectasias; 11,4%, diabetes melito; 51,4%, hipertensao arterial e 20%, cor pulmonale. CONCLUSAO: Outras etiologias possiveis de DPOC devem ser investigadas. A fumaca inalada associada a infeccoes pulmonares pregressas podem ser determinantes na injuria pulmonar. Homens com menor massa corporea representam essa populacao com DPOC grave. Hipertensao sistemica e cor pulmonale sao achados frequentes.

Emprego da determinação de monóxido de carbono no ar exalado para a detecção do consumo de tabaco

Introduction: Smoking is the major preventable risk of morbidity and mortality. However, its prevalence is high in developed countries and increasing in developing countries, even though its effects are now better known. The purpose of this study was to compare the exhaled carbon monoxide concentration (exCO) between smokers and nonsmokers, evaluate the factors that influence this parameter among smokers and the potential influence of passive smoking by measuring exCO in workers and patients of Instituto do Coracao HC-FMUSP. Materials and methods: This cross study included 256 volunteers who responded to a questionnaire and were submitted to exCO measuring with the MicroCo meter device. Results: There were 106 males and 150 females. Mean age was 43.4 years (Vmin-max: 15-83). There were 107 smokers, 118 nonsmokers and 31 passive smokers. Mean exCO was 14.01 ppm (Vmin-max: 1-44) among smokers, 2.03 ppm (Vmin-max: 0-5) among passive smokers and 2.50 ppm (Vmin-max: 0-9) among nonsmokers. Significant statistical difference was observed between smokers and the other groups (p < 0.001), but not between nonsmokers and passive smokers. A positive correlation was found between the number of cigarettes smoked per day and exCO values while there was a negative correlation between the exCO values and the timing of the last cigarette. For a reference limit value of 6 ppm, sensitivity was 70% and specificity was 96%. Conclusion: exCO metering is easy to perform, low-cost, noninvasive and allows the obtention of immediate results and the reference limit value of 6 ppm has good specificity to evaluate the smoking habit.

Pharmaceutical care for patients with persistent asthma: assessment of treatment compliance and use of inhaled medications

OBJECTIVE To evaluate treatment compliance and use of inhaled medications of patients with asthma receiving complementary pharmaceutical care. METHODS A controlled prospective parallel study involving a study group and a control group. We selected 60 patients with persistent asthma and using metered-dose inhalers (MDIs), dry powder inhalers (DPIs) or both. The patients were evaluated three times over 60 days. Instructions were provided to the patients in the study group at all visits but only at the first visit to those in the control group. The patients using < 80% or > 120% of the total number of prescribed doses were classified as noncompliant. The inhalation technique was quantified by a scoring system. A satisfactory technique was defined as a score higher than 7 (maximum, 9) for MDIs and higher than 4 (maximum, 5) for DPIs. RESULTS The final study sample comprised 28 study group patients and 27 control group patients, of whom 18 (64.3%) and 20 (74.7%), respectively, were considered treatment compliant. From the first to the third visits, there were increases, in the study and control groups, in the median MDI-use score (from 3 [range, 0-5] to 8 [range, 8-9]; p < 0.001; and from 5 [range, 2-6] to 7 [range, 6-8]), as well as in the median DPI-use score (from 3 [range, 2-4] to 5 [range, 4-5] and from 3 [range, 2-4] to 4 [range, 3-5]). CONCLUSIONS The counseling provided by the pharmacist to the patient was important to assist in the implementation of the appropriate inhalation technique, especially for MDI use.