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Pneumocystis colonization in asthmatic patients not receiving oral corticosteroid therapy.

ABSTRACT: Pneumocystis jirovecii can colonize patients with chronic obstructive pulmonary disease. To determine if colonization occurs in asthma patients, sputum samples from 10 patients with mild asthma, who were not receiving oral corticosteroids, were evaluated by a sensitive real-time PCR assay that targets a multicopy gene of P. jirovecii. 2 patients (20%) had Pneumocystis DNA detected; 1 patient had 3 positive samples over an 11-day period. Thus, Pneumocystis colonization occurs in asthma patients, and further studies are warranted to evaluate its role in airways disease. TRIAL REGISTRATION NUMBER:NCT01113034.

SUBMITTER: Davey EL

PROVIDER: S-EPMC6309956 | biostudies-literature | 2017 Apr

REPOSITORIES: biostudies-literature

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Pneumocystis colonization in asthmatic patients not receiving oral corticosteroid therapy.

Davey Emma L EL Colombo Rhonda E RE Fiorentino Charles C Fahle Gary G Davey Richard T RT Olivier Kenneth N KN Kovacs Joseph A JA

Journal of investigative medicine : the official publication of the American Federation for Clinical Research 20170213 4

Pneumocystis jirovecii can colonize patients with chronic obstructive pulmonary disease. To determine if colonization occurs in asthma patients, sputum samples from 10 patients with mild asthma, who were not receiving oral corticosteroids, were evaluated by a sensitive real-time PCR assay that targets a multicopy gene of P. jirovecii. 2 patients (20%) had Pneumocystis DNA detected; 1 patient had 3 positive samples over an 11-day period. Thus, Pneumocystis colonization ...[more]

PMID: 28193704

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Project description:BackgroundAsthma is a common disease characterised by reversible airflow obstruction, bronchial hyperresponsiveness and chronic inflammation, which is commonly treated using corticosteroids such as budesonide. MicroRNAs (miRNAs) are a recently identified family of non-protein encoding genes that regulate protein translation by a mechanism entitled RNA interference. Previous studies have shown lung-specific miRNA expression profiles, although their importance in regulating gene expression is unresolved. We determined whether miRNA expression was differentially expressed in mild asthma and the effect of corticosteroid treatment.Methodology/principal findingsWe have examined changes in miRNA using a highly sensitive RT-PCR based approach to measure the expression of 227 miRNAs in airway biopsies obtained from normal and mild asthmatic patients. We have also determined whether the anti-inflammatory action of corticosteroids are mediated through miRNAs by determining the profile of miRNA expression in mild asthmatics, before and following 1 month twice daily treatment with inhaled budesonide. Furthermore, we have analysed the expression of miRNAs from individual cell populations from the airway and lung. We found no significant difference in the expression of 227 miRNAs in the airway biopsies obtained from normal and mild asthmatic patients. In addition, despite improved lung function, we found no significant difference in the miRNA expression following one month treatment with the corticosteroid, budesonide. However, analysis of bronchial and alveolar epithelial cells, airway smooth muscle cells, alveolar macrophages and lung fibroblasts demonstrate a miRNA expression profile that is specific to individual cell types and demonstrates the complex cellular heterogeneity within whole tissue samples.ConclusionsChanges in miRNA expression do not appear to be involved in the development of a mild asthmatic phenotype or in the anti-inflammatory action of the corticosteroid budesonide.

Project description:Background Oral anticoagulation therapy has proven beneficial impact on the prevention of thromboembolic events. However, the use of antocoagulatns also increases the risk of bleeds. To maximize the benefits and minimize the risks of the treatment, guidance on appropriate use of oral anticoagulants is essential. An international guideline describing relevant components and requirements for pharmaceutical care for patients receiving a therapy woth oral antocoagulants would increase the quality of care. However, recommendations on pharmaceutical care for patients on anticoagulation is lacking. Objective This study aims to develop an interprofessional guideline to support patients in their use of oral anticoagulation therapy. Method Two systematic literature searches were performed on existing guidelines on the management and interventions to improve-oral anticoagulant use, to generate possible recommendations. Subsequently, an international expert panel with 26 pharmacists with extensive experience in clinical and/or scientific work on anticoagulation from a total of 22 European and 4 non-European countries was constituted. With this (geographically well distributed) expert panel, a four-round internet-based Delphi technique was conducted to reach consensus on their relevance. Items were ranked on a 1-10 scale of agreement. A median agreement score of ≥ 7.5 was considered the threshold for consensus. Levels of importance were rated on a 1-3 scale. Setting A global network of 26 pharmacists specialized in oral antocoagulation therapy. Main outcome measure Development of inter-professional guideline. Results After the four Delphi rounds 18 guideline recommendations were formulated. Consensus of opinion was achieved for all recommendations (median agreement: 8.5-10.0), whereas mean levels of importance were between 1.1 and 2.0 (SD: 0.2-0.7). The following domains were rated as most important targets for improving the care around oral anticoagulation: 'INR-monitoring', 'Transfer of care between health care settings', 'Adherence to medication', 'Patient communication and engagement', and 'Medication reconciliation and medication review'. Conclusion The 18 recommendations included in this guideline provide the base for optimization of anticoagulation care across different countries/healthcare systems. Future work involves translating the guideline recommendations into clinical practice. Once implemented, the recommendations of the guideline will support health care providers with the pharmaceutical care for patients on, oral anticoagulation which will improve the effective and safe use of these medicines.

Dataset Information

Pneumocystis colonization in asthmatic patients not receiving oral corticosteroid therapy.

Publications

<i>Pneumocystis</i> colonization in asthmatic patients not receiving oral corticosteroid therapy.

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