Abstract:
BACKGROUND:IL-4 and IL-13 play a critical yet poorly understood role in orchestrating the recruitment and activation of effector cells of the asthmatic response and driving the pathophysiology of allergic asthma. The house dust mite (HDM) sheep asthma model displays many features of the human condition and is an ideal model to further elucidate the involvement of these critical Th2 cytokines. We hypothesized that airway exposure to HDM allergen would induce or elevate the expression profile of IL-4 and IL-13 during the allergic airway response in this large animal model of asthma. METHODS:Bronchoalveolar lavage (BAL) samples were collected from saline- and house dust mite (HDM)- challenged lung lobes of sensitized sheep from 0 to 48 h post-challenge. BAL cytokines (IL-4, IL-13, IL-6, IL-10, TNF-α) were each measured by ELISA. IL-4 and IL-13 expression was assessed in BAL leukocytes by flow cytometry and in airway tissue sections by immunohistology. RESULTS:IL-4 and IL-13 were increased in BAL samples following airway allergen challenge. HDM challenge resulted in a significant increase in BAL IL-4 levels at 4 h compared to saline-challenged airways, while BAL IL-13 levels were elevated at all time-points after allergen challenge. IL-6 levels were maintained following HDM challenge but declined after saline challenge, while HDM administration resulted in an acute elevation in IL-10 at 4 h but no change in TNF-α levels over time. Lymphocytes were the main early source of IL-4, with IL-4 release by alveolar macrophages (AMs) prominent from 24 h post-allergen challenge. IL-13 producing AMs were increased at 4 and 24 h following HDM compared to saline challenge, and tissue staining provided evidence of IL-13 expression in airway epithelium as well as immune cells in airway tissue. CONCLUSION:In a sheep model of allergic asthma, airway inflammation is accompanied by the temporal release of key cytokines following allergen exposure that primarily reflects the Th2-driven nature of the immune response in asthma. The present study demonstrates for the first time the involvement of IL-4 and IL-13 in a relevant large animal model of allergic airways disease.
journal_name
BMC Pulm Medjournal_title
BMC pulmonary medicineauthors
Liravi B,Piedrafita D,Nguyen G,Bischof RJdoi
10.1186/s12890-015-0097-9subject
Has Abstractpub_date
2015-09-11 00:00:00pages
101issn
1471-2466pii
10.1186/s12890-015-0097-9journal_volume
15pub_type
杂志文章abstract:BACKGROUND:The assessment of airway inflammation for the diagnosis of asthma or COPD is still uncommon in pneumology-specialized general practices. In this respect, the measurement of exhaled nitric oxide (NO), as a fast and simple methodology, is increasingly used. The indirect assessment of airway inflammation, howev...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章
doi:10.1186/1471-2466-8-5
更新日期:2008-02-28 00:00:00
abstract:BACKGROUND:Physical and psychological symptoms are the hallmark of patients' subjective perception of their illness. The purpose of this analysis was to determine if patients with COPD have distinctive symptom profiles and to examine the association of symptom profiles with systemic biomarkers of inflammation. METHODS...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章,多中心研究
doi:10.1186/s12890-016-0330-1
更新日期:2016-12-03 00:00:00
abstract:BACKGROUND:Despite advances in asthma treatment, severe asthma (SA) still results in high morbidity and use of health resources. Our hypothesis was that SA patients would achieve adequate control with a systematic protocol, including oral corticosteroids, budesonide/formoterol maintenance and reliever therapy and a mul...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章
doi:10.1186/s12890-016-0314-1
更新日期:2016-11-16 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:Pulmonary rehabilitation offers potential benefits to people with asthma. It is however unknown if rehabilitation favourably affects patients' health care needs. We therefore examined if rehabilitation reduced needs and, in addition, if it improved asthma control. METHODS:One hundred fifty patients with ast...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章
doi:10.1186/s12890-020-01301-9
更新日期:2020-10-15 00:00:00
abstract:BACKGROUND:Penicillium species are among the most common fungi present in the environment and are usually considered non-pathogenic to humans. However, in immunocompromised hosts they can be virulent pathogens and can cause death. Penicillium digitatum is a plant pathogen that commonly causes a postharvest fungal disea...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章
doi:10.1186/1471-2466-13-16
更新日期:2013-03-23 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:Community-acquired pneumonia (CAP) requires urgent and specific antimicrobial therapy. However, the causal pathogen is typically unknown at the point when anti-infective therapeutics must be initiated. Physicians synthesize information from diverse data streams to make appropriate decisions. Artificial intel...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章
doi:10.1186/s12890-020-1089-y
更新日期:2020-03-06 00:00:00
abstract:BACKGROUND:Asthma is a chronic inflammatory airway disease characterized by reversible obstruction, inflammation and hyperresponsiveness to different stimulus. Aerobic and breathing exercises have been demonstrated to benefit asthmatic patients; however, there is no evidence comparing the effectiveness of these treatme...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章,随机对照试验
doi:10.1186/1471-2466-14-160
更新日期:2014-10-17 00:00:00
abstract:BACKGROUND:Compared to other pulmonary function tests, there is a lack of standardization regarding how a maximum voluntary ventilation (MVV) maneuver is performed. Specifically, little is known about the variation in breathing frequency (fR) and its potential impact on the accuracy of test results. This study examines...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章
doi:10.1186/s12890-018-0650-4
更新日期:2018-05-24 00:00:00
abstract:BACKGROUND:Plasma levels of cell-free DNA (cf-DNA) are known to be elevated in sepsis and high levels are associated with a poor prognosis. Mechanical ventilation affects systemic inflammation in which lung-protective ventilation attenuates the inflammatory response. The aim was to study the effect of a lung protective...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章
doi:10.1186/s12890-020-01239-y
更新日期:2020-07-31 00:00:00
abstract:BACKGROUND:There are not enough data on the epidemiology of asthma in the Kingdom of Saudi Arabia (KSA). We analyzed data from a national household survey conducted in KSA in 2013 to estimate prevalence, associated risk factors and control measurements of asthma. METHODS:The Saudi Health Interview Survey was a cross-s...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章,多中心研究
doi:10.1186/s12890-015-0080-5
更新日期:2015-07-28 00:00:00
abstract:BACKGROUND:Although patients have more problems using metered dose inhalers, clinical comparisons suggest they provide similar control to dry powder inhalers. Using real-life situations this study was designed to evaluate asthma control in outpatients with moderate to severe persistent asthma and to compare efficacy of...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章
doi:10.1186/1471-2466-11-40
更新日期:2011-07-15 00:00:00
abstract:BACKGROUND:Technology offers opportunities to improve healthcare, but little is known about Internet use by COPD patients. We tested two hypotheses: Internet access is associated with socio-demographic disparities and frequency of use is related to perceived needs. METHODS:We analyzed data from a 2007-2008 national co...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章
doi:10.1186/1471-2466-14-66
更新日期:2014-04-22 00:00:00
abstract:BACKGROUND:Although the prevalence of both obstructive sleep apnoea (OSA) and asthma are both increasing, little is known about the impact of OSA on the natural history of lung function in asthmatic patients. METHODS:A total of 466 patients from our sleep laboratory were retrospectively enrolled. Of them, 77 patients ...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章
doi:10.1186/s12890-017-0398-2
更新日期:2017-03-21 00:00:00
abstract:BACKGROUND:Cystic Fibrosis (CF) is a hereditary pulmonary and extra-pulmonary disease that occurs equally in men and women. However, a difference in morbidity and mortality rates between the sexes has been long documented. Similarly, a sex-disparity in disease severity has been reported in asthma as well. Studies done ...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章
doi:10.1186/s12890-020-01272-x
更新日期:2020-08-31 00:00:00
abstract:BACKGROUND:Appropriate sedation benefits patients by reducing the stress response, but it requires an appropriate method of assessment to adjust the dosage of sedatives. The aim of this study was to compare the difference in the sedation of mechanically ventilated patients undergoing flexible bronchoscopy (FB) monitore...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章,随机对照试验
doi:10.1186/1471-2466-14-15
更新日期:2014-02-06 00:00:00
abstract:BACKGROUND:Despite the recent increasing worldwide attention towards pulmonary hypertension (PH), its epidemiology remains poorly described in Africa. Accordingly, we performed a systematic review and meta-analysis of PH prevalence, incidence and etiologies in Africa. METHODS:We searched PubMed, EMBASE, African Journa...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章,meta分析,评审
doi:10.1186/s12890-017-0549-5
更新日期:2017-12-08 00:00:00
abstract:BACKGROUND:Pulmonary sequestration (PS) is a form of congenital pulmonary malformation that is generally diagnosed in childhood or adolescence and usually resected when diagnosed. We aim to identify the clinical presentation and course of patients diagnosed to have PS during adulthood. METHODS:Using a computer-assiste...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章
doi:10.1186/s12890-018-0663-z
更新日期:2018-06-05 00:00:00
abstract:BACKGROUND:To evaluate the factors affecting the maximum standardized uptake value (SUVmax) of metastatic lymph nodes in different histological types of non-small cell lung cancer (NSCLC) on integrated positron emission tomography and computed tomography (PET-CT). METHODS:This was a retrospective, single-institution r...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章
doi:10.1186/s12890-015-0014-2
更新日期:2015-03-08 00:00:00
abstract:BACKGROUND:The Global Lung Function Initiative 2012 (GLI) reference values are currently endorsed by several respiratory societies but evaluations of applicability for adults resident in European countries are lacking. The aim of this study was to evaluate if the GLI reference values are appropriate for an adult Caucas...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章
doi:10.1186/s12890-015-0022-2
更新日期:2015-03-25 00:00:00
abstract:BACKGROUND:The acute respiratory distress syndrome (ARDS) is a serious disease in critically ill patients that is characterized by pulmonary dysfunctions, hypoxemia and significant mortality. Patients with immunodeficiency (e.g. SCID with T and B cell deficiency) are particularly susceptible to the development of sever...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章
doi:10.1186/s12890-018-0741-2
更新日期:2018-11-22 00:00:00
abstract:BACKGROUND:Beginning at a young age, children with cystic fibrosis (CF) embark on demanding care regimens that pose challenges to parents. We examined the extent to which clinical, demographic and psychosocial features inform patterns of adherence to pulmonary therapies and how these patterns can be used to develop cli...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章
doi:10.1186/s12890-020-01202-x
更新日期:2020-06-18 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:Pulmonary surfactant D (SP-D) has important regulatory functions for innate immunity and has been implicated as a biomarker for chronic obstructive pulmonary disease (COPD). We hypothesized that COPD patients would have reduced bronchoalveolar lavage (BAL) fluid SP-D levels compared to healthy smoking and no...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章
doi:10.1186/1471-2466-10-53
更新日期:2010-10-25 00:00:00
abstract:BACKGROUND:Selection bias is a systematic error in epidemiologic studies that may seriously distort true measures of associations between exposure and disease. Observational studies are highly susceptible to selection bias, and researchers should therefore always examine to what extent selection bias may be present in ...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章
doi:10.1186/1471-2466-14-63
更新日期:2014-04-16 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:To compare the microbiological culture within endotracheal aspirate specimens (ETAs) and endotracheal tube specimens (ETTs) in patients undergoing mechanical ventilation (MV) by statistical tools. METHOD:ETAs and ETTs from a total number of 81 patients, who were undergoing MV at the intensive care unit (ICU...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章
doi:10.1186/s12890-019-0926-3
更新日期:2019-08-27 00:00:00
abstract:BACKGROUND:In Europe, administration of an inhaled corticosteroid (ICS) combined with a long-acting β2 agonist is approved in chronic obstructive pulmonary disease (COPD) patients with a pre-bronchodilator FEV1 < 60% predicted normal, a history of repeated exacerbations, and who have significant symptoms despite regula...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章
doi:10.1186/1471-2466-14-56
更新日期:2014-04-02 00:00:00
abstract:BACKGROUND:During the last few years, investigators have debated the role that infectious agents may have in sarcoidosis pathogenesis. With the emergence of new molecular biology techniques, several studies have been conducted; therefore, we performed a meta-analysis in order to better explain this possible association...
journal_title:BMC pulmonary medicine
pub_type: 杂志文章,meta分析,评审
doi:10.1186/s12890-016-0332-z
更新日期:2016-11-28 00:00:00