Abstract:
BACKGROUND:Although cigarette smoking may have a negative impact on the clinical outcome of pulmonary tuberculosis (PTB), few studies have investigated the impact of smoking-associated lung diseases. Emphysema is a major pathological finding of smoking-related lung damage. We aimed to clarify the effect of emphysema on sputum culture conversion rate for Mycobacterium tuberculosis (MTB). METHODS:We retrospectively studied 79 male patients with PTB confirmed by acid-fast bacillus smear and culture at Jikei University Daisan Hospital between January 2015 and December 2018. We investigated the sputum culture conversion rates for MTB after starting standard anti-TB treatment in patients with or without emphysema. Emphysema was defined as Goddard score ≥ 1 based on low attenuation area < - 950 Hounsfield Unit (HU) using computed tomography (CT). We also evaluated the effect on PTB-related CT findings prior to anti-TB treatment. RESULTS:Mycobacterial median time to culture conversion (TCC) in 38 PTB patients with emphysema was 52.0 days [interquartile range (IQR) 29.0-66.0 days], which was significantly delayed compared with that in 41 patients without emphysema (28.0 days, IQR 14.0-42.0 days) (p < 0.001, log-rank test). Multivariate Cox proportional hazards analysis showed that the following were associated with delayed TCC: emphysema [hazard ratio (HR): 2.43; 95% confidence interval (CI): 1.18-4.97; p = 0.015), cavities (HR: 2.15; 95% CI: 1.83-3.89; p = 0.012) and baseline time to TB detection within 2 weeks (HR: 2.95; 95% CI: 1.64-5.31; p < 0.0001). Cavities and consolidation were more often identified by CT in PTB patients with than without emphysema (71.05% vs 43.90%; p = 0.015, and 84.21% vs 60.98%; p = 0.021, respectively). CONCLUSIONS:This study suggests that emphysema poses an increased risk of delayed TCC in PTB. Emphysema detection by CT might be a useful method for prediction of the duration of PTB treatment required for sputum negative conversion.
journal_name
BMC Pulm Medjournal_title
BMC pulmonary medicineauthors
Takasaka N,Seki Y,Fujisaki I,Uchiyama S,Matsubayashi S,Sato A,Yamanaka Y,Odashima K,Kazuyori T,Seki A,Takeda H,Ishikawa T,Kuwano Kdoi
10.1186/s12890-020-01325-1subject
Has Abstractpub_date
2020-11-07 00:00:00pages
287issue
1issn
1471-2466pii
10.1186/s12890-020-01325-1journal_volume
20pub_type
杂志文章abstract:BACKGROUND:Bronchiectasis is characterized by abnormal, permanent and irreversible dilatation of the bronchi, usually responsible for daily symptoms and frequent respiratory complications. Many causes have been identified, but only limited data are available concerning the association between bronchiectasis and renal t...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章,多中心研究
doi:10.1186/s12890-015-0133-9
更新日期:2015-11-07 00:00:00
abstract:BACKGROUND:US mentholated cigarette sales have increased considerably over 50 years. Preference for mentholated cigarettes is markedly higher in Black people. While menthol itself is not genotoxic or carcinogenic, its acute respiratory effects might affect inhalation of cigarette smoke. This possibility seems consisten...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章,评审
doi:10.1186/1471-2466-11-18
更新日期:2011-04-18 00:00:00
abstract:BACKGROUND:Telehealth and telemonitoring is an emerging area of study in people with cystic fibrosis (CF), with the potential of increasing access to care, and minimising infection control risks to patients without compromising their health outcomes. To date, limited evidence is available to support the use of teleheal...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章
doi:10.1186/s12890-019-0784-z
更新日期:2019-01-24 00:00:00
abstract:BACKGROUND:Chronic obstructive pulmonary disease (COPD) is combination of progressive lung diseases. The diagnosis of COPD is generally based on the pulmonary function testing, however, difficulties underlie in prognosis of smokers or early stage of COPD patients due to the complexity and heterogeneity of the pathogene...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章
doi:10.1186/s12890-020-1062-9
更新日期:2020-02-03 00:00:00
abstract:BACKGROUND:Combined effects of leaks, mechanical property of respiratory system and upper airway (UA) patency on patient-ventilator synchrony (PVA) and the level of clinically "tolerable" leaks are not well established in home ventilators. METHODS:We comparatively assessed on a bench model, the highest leak level tole...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章
doi:10.1186/s12890-017-0487-2
更新日期:2017-11-21 00:00:00
abstract:BACKGROUND:The dysfunction of airway epithelial barrier is closely related to the pathogenesis of asthma. Secreted Hsp90α participates in inflammation and Hsp90 inhibitor protects endothelial dysfunction. In the current study, we aimed to explore the role of secreted Hsp90α in asthmatic airway epithelial barrier functi...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章
doi:10.1186/s12890-019-0938-z
更新日期:2019-11-20 00:00:00
abstract:BACKGROUND:The accuracy of currently available same-day diagnostic tools (smear microscopy and conventional nucleic acid amplification tests) for pleural tuberculosis (TB) is sub-optimal. Newer technologies may offer improved detection. METHODS:Smear-microscopy, adenosine deaminase (ADA), interferon gamma (IFN-γ), and...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章
doi:10.1186/1471-2466-14-58
更新日期:2014-04-08 00:00:00
abstract:BACKGROUND:Zosteriform skin metastasis (ZSM) is rare, and its etiology is not well understood. ZSM is possibly derived from the retrograde movement of cancer cells through the lymphatic vessels during disease development. However, it has been difficult to demonstrate it, as no specific findings have been observed. CAS...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章
doi:10.1186/s12890-021-01414-9
更新日期:2021-01-26 00:00:00
abstract:BACKGROUND:Little is known about whether or how supplemental oxygen affects patients with pulmonary fibrosis. METHODS/DESIGN:A mixed-methods study is described. Patients with pulmonary fibrosis, informal caregivers of pulmonary fibrosis patients and practitioners who prescribe supplemental oxygen will be interviewed t...
journal_title:BMC pulmonary medicine
pub_type: 临床试验,杂志文章
doi:10.1186/1471-2466-14-169
更新日期:2014-11-01 00:00:00
abstract:BACKGROUND:Endotoxin from Gram-negative bacteria are found in different concentrations in dust and on the ground of laboratories dealing with small animals and animal houses. METHODS:Cross-sectional study performed in workplaces of two universities. Dust samples were collected from laboratories and animal facilities h...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章,多中心研究
doi:10.1186/s12890-016-0233-1
更新日期:2016-05-06 00:00:00
abstract:BACKGROUND:Although many studies on people with Chronic Obstructive Pulmonary Disease (COPD) have examined the mutual impact of physical status and emotional experience, there is limited knowledge about the way COPD people first-hand perceive their condition. This study was designed to investigate the illness perceptio...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章
doi:10.1186/s12890-020-1157-3
更新日期:2020-05-04 00:00:00
abstract:BACKGROUND:Idiopathic pulmonary fibrosis (IPF) is a distinct form of interstitial pneumonia with unknown origin and poor prognosis. Current pharmacologic treatments are limited and lung transplantation is a viable option for appropriate patients. The aim of this review was to summarize lung transplantation survival in ...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章,评审
doi:10.1186/1471-2466-14-139
更新日期:2014-08-16 00:00:00
abstract:BACKGROUND:The breakdown of alveolar barrier dysfunction contributes to Lipopolysaccharide stimulated pulmonary edema and acute lung injury. Actin cytoskeleton has been implicated to be critical in regulation of epithelial barrier. Here, we performed in vivo and in vitro study to investigate role of TLR4-p38 MAPK-Hsp27...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章
doi:10.1186/s12890-018-0735-0
更新日期:2018-11-27 00:00:00
abstract:BACKGROUND:The evidence regarding the association between lung cancer and occupational exposure to cement is controversial. This study investigated causes of deaths from cancer of respiratory tract among cement workers. METHODS:The deaths of the Greek Cement Workers Compensation Scheme were analyzed covering the perio...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章
doi:10.1186/1471-2466-12-30
更新日期:2012-06-27 00:00:00
abstract:BACKGROUND:Mechanical ventilation (MV), compared to spontaneous breathing (SB), has been found to increase abdominal edema and inflammation in experimental sepsis. Our hypothesis was that in primary acute respiratory distress syndrome (ARDS) MV would enhance inflammation and edema in the abdomen. METHODS:Thirteen pigl...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章
doi:10.1186/s12890-020-1138-6
更新日期:2020-04-25 00:00:00
abstract:BACKGROUND:During the past decades, numerous efforts have been made to decrease the death rate among lung cancer patients. Nonetheless, the improvement in long-term survival has been limited and lung cancer is still a devastating disease. DISCUSSION:With this article we would like to point out that survival of lung ca...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章
doi:10.1186/1471-2466-12-77
更新日期:2012-12-13 00:00:00
abstract:BACKGROUND:Exercise capacity is impaired in pulmonary arterial hypertension (PAH). We hypothesized that cardiovascular reserve abnormalities would be associated with impaired hemodynamic response to pharmacological stress and worse outcome in PAH. METHODS:Eighteen PAH patients (p) group 1 NYHA class II/III and ten con...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章
doi:10.1186/1471-2466-14-69
更新日期:2014-04-24 00:00:00
abstract:BACKGROUND:Onset of allergic asthma has a strong association with childhood but only a few studies have analyzed incidence of asthma from childhood to late adulthood in relation to allergy. The purpose of the study was to assess age-specific incidence of allergic and non-allergic asthma. METHODS:Questionnaires were se...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章
doi:10.1186/s12890-019-1040-2
更新日期:2020-01-10 00:00:00
abstract:BACKGROUND:CHCHD2 was identified a novel cell migration-promoting gene, which could promote cell migration and altered cell adhesion when ectopically overexpressed in NIH3T3 fibroblasts, and it was identified as a protein necessary for OxPhos function as well. However, the clinic relevance of CHCHD2 expression in NSCLC...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章
doi:10.1186/s12890-020-1079-0
更新日期:2020-02-13 00:00:00
abstract:BACKGROUND:Malignant pleural mesothelioma (MPM) is marked by its difficult diagnosis and poor prognosis. Medical thoracoscopy (MT) is an effective and safe procedure for the diagnosis of exudative pleural effusions and many factors associated with poor prognosis of MPM. We conducted this study to investigate the value ...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章
doi:10.1186/s12890-018-0619-3
更新日期:2018-04-03 00:00:00
abstract:BACKGROUND:Asthma is a heterogeneous disease and understanding this heterogeneity will enable the realisation of precision medicine. We sought to compare the sputum and serum inflammatory profiles in moderate-to-severe asthma during stable disease and exacerbation events. METHODS:We recruited 102 adults and 34 childre...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章
doi:10.1186/s12890-019-0906-7
更新日期:2019-08-08 00:00:00
abstract:BACKGROUND:To investigate if age, gender and smoking are associated with airway wall thickness (AWT) measured by high resolution computed tomography (HRCT) and if higher AWT is associated with lower levels of pulmonary function in healthy current- and never-smokers with a wide age range. METHODS:HRCT scans were perfor...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章
doi:10.1186/s12890-017-0363-0
更新日期:2017-02-01 00:00:00
abstract:BACKGROUND:There is emerging evidence regarding the efficacy of exercise training to improve exercise capacity for individuals with non-small cell lung cancer (NSCLC). Cardiopulmonary exercise testing (CPET) is the gold standard measure of exercise capacity; however this laboratory test has limitations for use in resea...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章
doi:10.1186/s12890-015-0075-2
更新日期:2015-08-12 00:00:00
abstract:BACKGROUND:This study is a cross sectional analysis, aiming to evaluate if atopy is as a risk factor for exercise induced bronchoconstriction (EIB) among Tunisian athletes. METHODS:Atopy was defined by a skin prick test result and EIB was defined as a decrease of at least 15% in forced expiratory volume in one second ...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章
doi:10.1186/1471-2466-9-8
更新日期:2009-02-05 00:00:00
abstract:BACKGROUND:The most prevalent complication of percutaneous lung biopsy is pneumothorax (PNX). A routine immediate post-procedure CT scan (ICT) to spot PNX is done in many centers. However, the diagnostic yield of this practice has not been studied broadly. We sought to evaluate whether an ICT could replace the routine ...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章
doi:10.1186/s12890-020-1128-8
更新日期:2020-04-15 00:00:00
abstract:BACKGROUND:The 2013 GOLD classification system for COPD distinguishes four stages: A (low symptoms, low exacerbation risk), B (high symptoms, low risk), C (low symptoms, high risk) and D (high symptoms, high risk). Assessment of risk is based on exacerbation history and airflow obstruction, whatever results in a higher...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章,随机对照试验
doi:10.1186/1471-2466-14-163
更新日期:2014-10-18 00:00:00
abstract:BACKGROUND:Each year, more than 13.7 million people became an active case of tuberculosis and more than 1.5 million cases of TB patient will die. The association between TB and malnutrition is bi-directional, TB leads the patient to malnutrition, and malnutrition increases the risk of developing active TB by 6 to 10 ti...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章
doi:10.1186/s12890-019-0953-0
更新日期:2019-10-21 00:00:00
abstract:BACKGROUND:Neurohumoral activation is present in COPD and might provide a link between pulmonary and systemic effects, especially cardiovascular disease. Because long acting inhaled β-agonists reduce hyperinflation, they could reduce sympathoexcitation by improving the inflation reflex. We aimed to evaluate if inhaled ...
journal_title:BMC pulmonary medicine
pub_type: 临床试验,杂志文章
doi:10.1186/s12890-015-0054-7
更新日期:2015-04-30 00:00:00
abstract:BACKGROUND:Idiopathic pulmonary fibrosis (IPF) is a form of chronic fibrosing interstitial pneumonia characterized by progressive worsening of dyspnea and lung function, with a poor prognosis. The objective of this study was to determine treatment patterns, resource use and costs of managing Spanish patients with IPF. ...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章
doi:10.1186/s12890-016-0168-6
更新日期:2016-01-12 00:00:00
abstract:BACKGROUND:Primary Ciliary Dyskinesia (PCD) is also known as immotile-cilia syndrome, an autosomal recessive disorder of ciliary function, leading to mucus retention in the respiratory system in childhood. Our knowledge in the pathophysiological aspect of this devastating disorder is increasing with the advancement of ...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章
doi:10.1186/s12890-020-1175-1
更新日期:2020-05-15 00:00:00