Brunilda Marku

University of Padova, Padova, Veneto, Italy

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Publications (5)29.1 Total impact

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    ABSTRACT: Background. Inhalation of thermal water with antioxidant properties is empirically used for COPD. Aims. To evaluate the effects of sulphurous thermal water (reducing agents) on airway oxidant stress and clinical outcomes in COPD. Methods. Forty moderate-to-severe COPD patients were randomly assigned to receive 12-day inhalation with sulphurous thermal water or isotonic saline. Patients were assessed for superoxide anion (O2 (-)) production in the exhaled breath condensate and clinical outcomes at recruitment, the day after the conclusion of the 12-day inhalation treatment, and one month after the end of the inhalation treatment. Results. Inhalation of reducing agents resulted in a significant reduction of O2 (-) production in exhaled breath condensate of COPD patients at the end of the inhalatory treatment and at followup compared to baseline. A significant improvement in the COPD assessment test (CAT) questionnaire was shown one month after the end of the inhalatory treatment only in patients receiving sulphurous water. Conclusion. Thermal water inhalation produced an in vivo antioxidant effect and improvement in health status in COPD patients. Larger studies are required in order to evaluate whether inhalation of thermal water is able to modify relevant clinical outcomes of the disease (the study was registered at NCT01664767).
    The Scientific World Journal 12/2013; 2013:927835. · 1.73 Impact Factor
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    ABSTRACT: BACKGROUND: Impaired immune response to viral infections in atopic asthmatic patients has been recently reported and debated. Whether this condition is present in childhood and whether it is affected by atopy per se deserves further investigation. OBJECTIVE: We sought to investigate airway interferon production in response to rhinovirus infection in children who are asthmatic, atopic, or both and its correlation with the airway inflammatory profile. METHODS: Bronchial biopsy specimens and epithelial cells were obtained from 47 children (mean age, 5 ± 0.5 years) undergoing bronchoscopy. The study population included asthmatic children who were either atopic or nonatopic, atopic children without asthma, and children without atopy or asthma. Rhinovirus type 16 induction of IFN-λ and IFN-β mRNA and protein levels was assessed in bronchial epithelial cell cultures. The immunoinflammatory profile was evaluated by means of immunohistochemistry in bronchial biopsy specimens. RESULTS: Rhinovirus type 16-induced interferon production was significantly reduced in atopic asthmatic, nonatopic asthmatic, and atopic nonasthmatic children compared with that seen in nonatopic nonasthmatic children (all P < .05). Increased rhinovirus viral RNA levels paralleled this deficient interferon induction. Additionally, IFN-λ and IFN-β induction correlated inversely with the airway T(H)2 immunopathologic profile (eosinophilia and IL-4 positivity: P < .05 and r = -0.38 and P < .05 and r = -0.58, respectively) and with epithelial damage (P < .05 and r = -0.55). Furthermore, total serum IgE levels correlated negatively with rhinovirus-induced IFN-λ mRNA levels (P < .05 and r = -0.41) and positively with rhinovirus viral RNA levels (P < .05 and r = 0.44). CONCLUSIONS: Deficient interferon responses to rhinovirus infection are present in childhood in asthmatic subjects irrespective of their atopic status and in atopic patients without asthma. These findings suggest that deficient immune responses to viral infections are not limited to patients with atopic asthma but are present in those with other T(H)2-oriented conditions.
    The Journal of allergy and clinical immunology 09/2012; · 12.05 Impact Factor
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    ABSTRACT: There are increasing data to support the "hygiene" and "microbiota" hypotheses of a protective role of infections in modulating the risk of subsequent development of asthma. There is less evidence that respiratory infections can actually cause the development of asthma. There is some evidence that rhinovirus respiratory infections are associated with the development of asthma, particularly in childhood, whereas these infections in later life seem to have a weaker association with the development of asthma. The role of bacterial infections in chronic asthma remains unclear. This article reviews the available evidence indicating that asthma may be considered as a chronic infectious disease.
    Clinics in chest medicine 09/2012; 33(3):473-84. · 2.51 Impact Factor
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    ABSTRACT: Both smokers and patients with asthma can experience fixed airflow obstruction, which is associated with distinctive patterns of airway pathology. The influence of fixed airflow obstruction on the prognosis of these patients is unknown. We sought to investigate lung function decline and exacerbations in a 5-year prospective study of subjects with fixed airflow obstruction due to asthma or chronic obstructive pulmonary disease (COPD). We also sought to explore correlations between functional, pathological, and clinical features. Patients with fixed airflow obstruction due to asthma (n = 16) or COPD (n = 21) and a control group of asthmatic patients with fully reversible airflow obstruction (n = 15) were followed for 5 years. The rates of decline in FEV(1) were similar in patients with fixed airflow obstruction caused by asthma (-49.7 +/- 10.6 mL/y) or COPD (-51.4 +/- 9.8 mL/y) and were higher than in asthmatic patients with reversible airflow obstruction (-18.1 +/- 10.1 mL/y, P < .01). Exacerbation rates were also higher in patients with fixed airflow obstruction caused by asthma (1.41 +/- 0.26 per patient-year) or COPD (1.98 +/- 0.3 per patient-year) compared with those seen in asthmatic patients with reversible airflow obstruction (0.53 +/- 0.11 per patient-year, P < .01). Baseline exhaled nitric oxide levels and sputum eosinophil counts correlated with the FEV(1) decline in asthmatic patients with fixed airflow obstruction. By contrast, baseline sputum neutrophil counts, emphysema scores, comorbidities, and exacerbation frequency correlated directly and pulmonary diffusion capacity correlated inversely with the FEV(1) decline in patients with COPD. In both patients with asthma and those with COPD, fixed airflow obstruction is associated with increased lung function decline and frequency of exacerbations. Nevertheless, the decline in lung function entails the specific pathological and clinical features of the underlying diseases.
    The Journal of allergy and clinical immunology 03/2010; 125(4):830-7. · 12.05 Impact Factor
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    ABSTRACT: Respiratory viral infections are recognized as the most frequent cause of asthma and chronic obstructive pulmonary disease (COPD) exacerbations with rhinovirus (i.e. the virus of the common cold) being the most frequent identified virus. The recent development of human experimental models of rhinovirus-induced asthma and COPD exacerbations represent innovative tools with the potential to increase our understanding in this field. Moreover this models will provide the opportunity to test, in a carefully controlled setting, novel pharmacological compounds. In this review we will provide an overview of the role of viral infections in asthma and COPD exacerbations and in particular we will summarize the inflammatory and immunological mechanisms that can pave the way to exacerbation following respiratory viral infection in these patients.
    Minerva medica 12/2009; 100(6):467-78. · 0.77 Impact Factor