Sonia Regina da Silva Carvalho

Combined exercise training reduces fatigue and modulates the cytokine profile of T-cells from multiple sclerosis patients in response to neuromediators

Fatigue is a common and disabling symptom of multiple sclerosis (MS), a classical Th1- and Th17-mediated autoimmune disease. There is no effective pharmacological treatment for fatigue, but some reports point towards beneficial effects of physical activity on management of the fatigue in MS patients. As both MS and fatigue have been associated with dysregulated cytokine network production, the objective of the present study was to evaluate the impact of a physical activity program consisting of a 12-week series of combining Pilates and aerobic exercises on fatigue severity, determined by FSS, and cytokine production, quantified by ELISA, by T cells from MS patients (n=08) with low disability (EDSS≤2). The results showed decrease in FSSs in all patients at the end of physical activity intervention. Regarding the cytokines, a significant reduction of IL-22 release was observed in polyclonally-activated T cells form MS patients post-training follow-up. Interestingly, while the physical activity attenuated the ability of dopamine in up-regulating Th17-related cytokines, it enhanced the anti-inflammatory effects of serotonin, evidenced by high IL-10 production. In summary, all results suggest that programmed physical activity has beneficial effects on management of fatigue in MS patients, and it could be related, at least in part, to its ability in regulating neuroimmune parameters into T cell compartment.

Is it useful to perform carbon monoxide diffusion capacity and respiratory muscle function tests in patients with multiple sclerosis without disability

Background and objective:  Impairment of respiratory function has been described in end‐stage multiple sclerosis (MS), as well as in patients with mild to severe disability. No data are available regarding the respiratory function of MS patients without disability. The objective of this study was to assess the pulmonary function, respiratory muscle strength and carbon monoxide diffusion capacity of the lungs (DLCO) in patients with relapsing‐remitting multiple sclerosis (RRMS) without disability.

Does fatigue occur in MS patients without disability

Background: Motor dysfunction and fatigue are the most common impairments that are associated with multiple sclerosis (MS). Walk tests and scales demonstrate the presence of fatigue in patients with MS with different levels of disability. Objective: To evaluate objective and subjective fatigue in MS patients without disability. Methods: Were selected MS patients with relapsing remitting clinical course, from 18 to 55 years old and EDSS 0 to 1.5; controls were paired for age, gender, body mass index, and physical activity level. Fatigue caused by pulmonary diseases, anemia, diabetes, thyroid disease, psychiatry diseases (except depression), and orthopedic and rheumatologic diseases are excluded. All participants performed the 6-minute walk test (6MWT), the MS Functional Composite (MSFC), and completed the Modified Fatigue Impact Scale (MFIS) and the Beck Depression Inventory. A multivariate model was applied to identify the variables associated with fatigue. Results: 54 individuals were selected (31 patients; 23 controls). In the MSFC and 6MWT, no significant difference was observed between the groups. A MFIS total score indicated fatigue in 35% of the patients, 42% in the physical domain, 25.8% in the cognitive domain, and 29% in the psychosocial domain, which differed from the controls in all comparisons. Fatigue was associated with MS, low-physical activity, and mood disorders. Conclusions: Fatigue occurs in patients with MS in the absence of motor dysfunction and is associated with the disease itself, the sedentary lifestyle, and mood disorders. The 6MWT is not useful to demonstrate motor fatigue in subjects without neurological disability.

Which functional parameters can help differentiate severe asthma from COPD

The aim of this study was to identify the respiratory function parameters that help in the accurate diagnosis of asthma and COPD. We studied 20 asthma and 30 COPD patients who underwent lung function tests including spirometry and plethysmography both with bronchodilator test and diffusion with carbon monoxide (DLCO). The tests were performed according to International Guidelines (ATS/ERS). The asthma patients were younger (mean age = 48) than those in the COPD group (mean age = 59) and this group also had more female patients (65%) than the COPD group (40%). The results showed a more severe obstruction in the asthma group: FEV1/FVC= 59% versus 66% for COPD. There was also a greater bronchodilator response as shown by changes in absolute and percentage values for FEV1 in the asthma group. Average DLCO values were normal in the asthma group (103%P) and lower in the COPD (69%). In plethysmography the asthma group had a higher residual volume (%P) and a higher airway resistance. We concluded that many functional parameters were useful in distinguishing the asthma and COPD groups. In individual analysis, DLCO was the parameter which best aided in an accurate diagnosis in both groups, with a higher specificity for COPD. The bronchodilator response measured by changes in FEV1 showed a higher sensitivity for asthma. Thus, these two tests are highlighted in the differential diagnosis of obstructive diseases.

Hiperreactividade brônquica na sarcoidose

The purpose of this study was to measure airway responsiveness in patients with sarcoidosis using bronchoprovocation test with methacholine (BPT) in comparison to roentgenographic findings, respiratory symptoms, activity and duration of the disease. There were 17 patients with Sarcoidosis, 20 asthmatics and 21 assymptomatics. We used the tidal breathing method with standardizes output for the nebulizers. We administered increasing and successively concentrations of methacholine beginning with 0.125 to 16 mg/ml. The responses were measured by changes in FEV1 or the final concentration was reached. The results were expressed as the concentration of methacholine causing 20% fall in FEV1 (PC20). Aerosolized bronchodilator was given at the completion of all tests. There were 4 patients with sarcoidosis who had positive BPT, 3 of them with PC20<8 mg/ml associated with respiratory symptoms, bilateral hilar adenopathy, more than twoyear duration and active disease. All the asthmatic subjects had positive BPT with CP20<8 mg/ml. The entire assymptomatic group had negative BPT. Positive bronchodilator response was reached in 6 patients with sarcoidosis, 20 asthmatics and 8 assymptomatic subjects. We concluded that: (a) airway responsiveness can be reached in 17.6% patients with sarcoidosis related to bilateral hilar adenopathy, chronic and active disease; (b) 50% of sarcoidosis patients with cough and/or wheeze had positive BPT, (c) the BPT was able to discriminate asthmatic from assymptomatic subjects. Rev Port Pneumol 2005; XI (2): 97-110

Is phrenic nerve conduction affected in patients with difficult-to-treat asthma?

Objective The aim of this study was to obtain data on phrenic neuroconduction and electromyography of the diaphragm muscle in difficult-to-treat asthmatic patients and compare the results to those obtained in controls. Methods The study consisted of 20 difficult-to-treat asthmatic patients compared with 27 controls. Spirometry, maximal inspiratory and expiratory pressure, chest X-ray, phrenic neuroconduction and diaphragm electromyography data were obtained. Results The phrenic compound motor action potential area was reduced, compared with controls, and all the patients had normal diaphragm electromyography. Conclusion It is possible that a reduced phrenic compound motor action potential area, without electromyography abnormalities, could be related to diaphragm muscle fiber abnormalities due to overload activity.

Alterações ecocardiográficas em doentes asmáticos

Introduction: Asthma is a chronic inflammatory disease which has increased during the last 20 years, putting a strain on medical resources, particularly severe forms of the disease. Treatment in such cases is inhaled corticosteroids and beta agonist drugs that can produce a range of side effects. The aim of this study is to identify echocardiograph abnormalities and correlate them with severity of disease. Methodology: Eight-seven outpatients were selected at the asthma unit of the Gaffree Guinle University Hospital (HUGG). Each patient underwent spirometry, electrocardiogram (ECG) and echocardiogram (ECO) during the trial within a month maximum. Echocardiograph abnormalities found related to degree of asthma. Statistical analysis was made by non-parametric tests. Results: We found significant differences (p ≤ 0.05) for age, disease duration and haemoglobin saturation (SaO2) between the moderate and severe groups. In the sample a high prevalence of tricuspid insufficiency (41.4%) was identified. Conclusions: ECO identified a series of abnormalities that were not always dependent on severity of disease. ECO can identify pulmonary hypertension through calculation of mean pressure of the pulmonary artery. Rev Port Pneumol 2008; XIV (3): 363-377

Echocardiograph alterations in asthma patients

INTRODUCTION Asthma is a chronic inflammatory disease which has increased during the last 20 years, putting a strain on medical resources, particularly severe forms of the disease. Treatment in such cases is inhaled corticosteroids and beta agonist drugs that can produce a range of side effects. The aim of this study is to identify echocardiograph abnormalities and correlate them with severity of disease. METHODOLOGY Eight-seven outpatients were selected at the asthma unit of the Gaffrée Guinle University Hospital (HUGG). Each patient underwent spirometry, electrocardiogram (ECG) and echocardiogram (ECO) during the trial within a month maximum. Echocardiograph abnormalities found related to degree of asthma. Statistical analysis was made by nonparametric tests. RESULTS We found significant differences (p<or=0.05) for age, disease duration and haemoglobin saturation (SaO2) between the moderate and severe groups. In the sample a high prevalence of tricuspid insufficiency (41.4%) was identified. CONCLUSIONS ECO identified a series of abnormalities that were not always dependent on severity of disease. ECO can identify pulmonary hypertension through calculation of mean pressure of the pulmonary artery.

Comparison between total lung capacity and residual volume values obtained by pletysmography and single breath methods with methane.

We analyzed pulmonary function tests of twenty asthmatic patients from Gaffrée e Guinle University Hospital, classified according to Brazilian Guidelines for Asthma (2002), similar to GINA, into mild persistent or moderate (9) or severe (11) asthma. We obtained parameters from spirometry, plethysmograph (PL) and single breath technique for diffusion capacity (SB), with methane. Total lung capacity and residual volume were called TLC(PL) and RV(PL) when measured by pletysmography and TLC(SB) and RV(SB) when determined by single breath test. There were 13 women and 7 men with mean age of 47.6 years. The pulmonary dysfunction degree to FEV1/FVC was 58.8% with CI95=53.9 to 63.6. The mean values in litres for TLC(PL) (5.94) and RV(PL) (2.55) were significantly higher than for TLC(SB) (4.73) and RV(SB) (1.66). Multiple regression equations were determined for TLC(PL) e RV(PL) using only single breath values, TLC(SB) or RV(SB), and spirographic para- meters, with significant regression coefficients. However, the inclusion of spirometric parameters, except for FVC, did not improve the predicted capacity for the equations. Considering only the TLC(SB), r(2)=0.79, the equation is: TLC(PL)=(TLC(SB) *1.025)+1.088, with EPE=0.64. The regression for RV(PL), r(2) =0.23, is: RV(PL)=(RV(SB) *0.9268)+1.012. The results obtained after bronchodilation with 400 mcg of salbutamol did not improve the regression. We concluded that the SB technique did not obtain the same results as pletysmography for TLC and RV, but for TLC this difference can be predicted.

Adenocarcinoma do pulmão: Aplicação da classificação WHO 1999/2004 à casuística do Serviço de Anatomia Patológica do Hospital da Universidade de Coimbra

Resumo Num periodo de quinze anos, entre 1990 e 2004, foram diagnosticados 701 adenocarcinomas primarios do pulmao no Servico de Anatomia Patologica do Hospital da Universidade de Coimbra e 382 metastases de carcinomas, com predominio do colon (119) e mama (66). Os adenocarcinomas do pulmao tiveram um aumento relativo no sexo masculino, com crescimento de 16 casos em 1990 para 49 em 2004, e no sexo feminino verificou-se um aumento de 12 para 37 no mesmo periodo e, assim, a partir de 2001, a incidencia foi equivalente em ambos os sexos. Tambem nos ultimos quatro anos, o grupo etario de incidencia dos adenocarcinomas passou para os 70 anos, havendo casos diagnosticados em doentes com idade superior a 80 anos. Acompanhando o estudo numerico dos adenocarcinomas, foi feita a respectiva reclassificacao histologica para aplicacao dos criterios de diagnostico estabelecidos pela classificacao da OMS 1999–2004 para os tumores do pulmao, pleura, timo e coracao. A incidencia dos carcinomas bronquioloalveolares foi naturalmente maior no sexo feminino, enquanto no sexo masculino, se verificou um maior numero de adenocarcinomas acinares. Estas conclusoes foram retiradas dos diagnosticos obtidos nas pecas cirurgicas e quando em biopsias cirurgicas se considerou a amostra representativa. O estadiamento cirurgico predominou entre IIA e IIIB e, em 109 casos, o diagnostico possivel foi apenas de adenocarcinoma do pulmao, por falta de amostragem e com imuno-histoquimica concordante.