RESUMO
Background and Purpose: Considering the possible role of fungal sensitization in the treatment of resistant asthma, which may lead to the remodeling of bronchial structure, we theorized that itraconazole could result in better control of asthma. In this regard, this study aimed to compare the effects of itraconazole and prednisolone (routinely prescribed) on clinical, structural, and biomarker findings of the remodeling of asthma. Materials and Methods: This double-blind controlled randomized clinical trial was performed on 70 adult patients suffering from severe persistent asthma. The intervention group received 200 mg of itraconazole per day, and the control group received 10 mg of prednisolone per day, for 32 weeks, in addition to the classic treatment of asthma. The subjects were randomly divided into two groups, and assigned by sealed envelope. Blinding was performed by repacking the drug in a similar container. Primary outcomes were asthma control test score, fibroblast growth factor 2, and wall area percentage on RB1 bronchus measured by computed tomography. The outcomes were compared in subjects classified as allergic, eosinophilic, T2 low asthma, and four types of inflammatory cell classification in sputum. Results: Seventy subjects finished the 32-week trial (35 subjects in each group). Baseline data did not show significant differences between groups. A comparison of asthma variants showed significantly more severe cough and dyspnea in the allergic variant and higher spirometry results in T2-low asthma. Sputum cytology revealed a mixed pattern as the most frequent type (47%). After the trial, two groups improved in many parameters; however, FGF-2 improved more significantly by itraconazole (4.66±16.92 decreased to 1.14±2.98), and FEV1/FVC was significantly higher in the itraconazole group, compared to the control group. These results did not change in terms of asthma variants and sputum classification. Conclusion: Itraconazole was superior to prednisolone in the treatment of many clinical and spirometry aspects in severe persistent asthma.
RESUMO
Background: Chronic cough is a common problem in the setting of family physicians. Recently, Lophomonas blattarum was considered a cause of respiratory symptoms in children and adults. Objective: This study is aimed at determining the effect of antiprotozoal treatment of Lophomonas in patients with a chronic cough in Mashhad during 2020-2021. Materials and Methods: This study was a randomized clinical trial. In this study, 60 patients with chronic cough and unremarkable imaging findings, who were unresponsive to three steps of standard treatment, were randomly assigned to the treatment, with 2 weeks of tinidazole and placebo. The tinidazole and placebo were prepared in a completely identical shape, and a random assignment was performed by a third party. The primary outcome was a complete resolution of cough. A follow-up of treatment was performed. Data were analyzed using the SPSS software version 25. Results: The basic demographic results showed no significant differences of sex and age between two groups. The results of this study showed a complete resolution of all respiratory symptoms in 40% (12), a complete improvement of cough in 40% (12), and a complete resolution of dyspnea in 50% (10) of the tinidazole group. The remaining showed significant improvement in the severity of cough and dyspnea. Postnasal drip, sputum, body temperature, and airway hyperresponsiveness were improved significantly. After tinidazole treatment, laboratory assessment of bronchial lavage and sputum revealed that 86 percent of smears were converted to negative. Conclusion: Tinidazole effectively resolved the chronic cough and most of the respiratory symptoms. Lophomonas blattarum is a potential mechanism for chronic cough.
