A genome-wide association study of adults with community-acquired pneumonia.

Background: Community-acquired pneumonia (CAP) is associated with high morbidity and hospitalization rate. In infectious diseases, host genetics plays a critical role in susceptibility and immune response, and the immune pathways involved are highly dependent on the microorganism and its route of infection. Here we aimed to identify genetic risk loci for CAP using a case-control genome-wide association study (GWAS).

Challenges in understanding host genetics and severity of community-acquired pneumonia.

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Should MASP-2 Deficiency Be Considered a Primary Immunodeficiency? Relevance of the Lectin Pathway.

Mannose-binding lectin (MBL)-associated serine protease-2 (MASP-2) is an indispensable enzyme for the activation of the lectin pathway of complement. Its deficiency is classified as a primary immunodeficiency associated to pyogenic bacterial infections, inflammatory lung disease, and autoimmunity. In Europeans, MASP-2 deficiency, due to homozygosity for c.

Sex bias in diagnostic delay in bronchiectasis: An analysis of the Spanish Historical Registry of Bronchiectasis.

Unlabelled: Diagnostic delay is common in most respiratory diseases, particularly in bronchiectasis. However, sex bias in diagnostic delay has not been studied to date.

Objective: Assessment of diagnostic delay in bronchiectasis by sex.

Pneumonia presenting with organ dysfunctions: Causative microorganisms, host factors and outcome.

Community-acquired pneumonia (CAP) is a serious infection that may occasionally rapidly evolve provoking organ dysfunctions. We aimed to characterize CAP presenting with organ dysfunctions at the emergency room, with regard to host factors and causative microorganisms, and its impact on 30-day mortality. 460 of 4070 (11.

Age-related risk factors for bacterial aetiology in community-acquired pneumonia.

Background And Objective: The objective of this study was to evaluate the effect of age and comorbidities, smoking and alcohol use on microorganisms in patients with community-acquired pneumonia (CAP).

Methods: A prospective multicentre study was performed with 4304 patients. We compared microbiological results, bacterial aetiology, smoking, alcohol abuse and comorbidities in three age groups: young adults (<45 years), adults (45-64 years) and seniors (>65 years).

Predictors of Severe Sepsis among Patients Hospitalized for Community-Acquired Pneumonia.

Background: Severe sepsis, may be present on hospital arrival in approximately one-third of patients with community-acquired pneumonia (CAP).

Objective: To determine the host characteristics and micro-organisms associated with severe sepsis in patients hospitalized with CAP.

Results: We performed a prospective multicenter cohort study in 13 Spanish hospital, on 4070 hospitalized CAP patients, 1529 of whom (37.

Addiction and Other Reasons Adolescent Smokers Give to Justify Smoking.

Background: The primary purpose of this paper is to examine youth addiction and other justifications for adolescent smoking, and how they affect the level of consumption.

Methods: Data from the Spanish 'State Survey on Drug Use among High School Students' aged between 14 and 18 years old were used in this paper. To account for the nature of the cigarette consumption data, several count data models were estimated in order to select the one that best fits adolescent smoking consumption.

Sensitivity, Specificity, and Positivity Predictors of the Pneumococcal Urinary Antigen Test in Community-Acquired Pneumonia.

Rationale: Detection of the C-polysaccharide of Streptococcus pneumoniae in urine by an immune-chromatographic test is increasingly used to evaluate patients with community-acquired pneumonia.

Objectives: We assessed the sensitivity and specificity of this test in the largest series of cases to date and used logistic regression models to determine predictors of positivity in patients hospitalized with community-acquired pneumonia.

Methods: We performed a multicenter, prospective, observational study of 4,374 patients hospitalized with community-acquired pneumonia.

Surfactant protein A genetic variants associate with severe respiratory insufficiency in pandemic influenza A virus infection.

Introduction: Inherited variability in host immune responses influences susceptibility and outcome of Influenza A virus (IAV) infection, but these factors remain largely unknown. Components of the innate immune response may be crucial in the first days of the infection. The collectins surfactant protein (SP)-A1, -A2, and -D and mannose-binding lectin (MBL) neutralize IAV infectivity, although only SP-A2 can establish an efficient neutralization of poorly glycosylated pandemic IAV strains.

Tobacco smoking increases the risk for death from pneumococcal pneumonia.

Background: Active smoking increases the risk of developing community-acquired pneumonia (CAP) and invasive pneumococcal disease, although its impact on mortality in pneumococcal CAP outcomes remains unclear. The aim of this study was to investigate the influence of current smoking status on pneumococcal CAP mortality.

Methods: We performed a multicenter, prospective, observational cohort study in 4,288 hospitalized patients with CAP.

Effects of omalizumab in non-atopic asthma: results from a Spanish multicenter registry.

Aim. To evaluate the effectiveness of omalizumab in non-atopic asthma. Methods.

Compliance with guidelines-recommended processes in pneumonia: impact of health status and initial signs.

Initial care has been associated with improved survival of community-acquired pneumonia (CAP). We aimed to investigate patient comorbidities and health status measured by the Charlson index and clinical signs at diagnosis associated with adherence to recommended processes of care in CAP. We studied 3844 patients hospitalized with CAP.

The role of mannose-binding lectin in pneumococcal infection.

The role of mannose-binding lectin (MBL) deficiency (MBL2; XA/O and O/O genotypes) in host defences remains controversial. The surfactant proteins (SP)-A1, -A2 and -D, other collectins whose genes are located near MBL2, are part of the first-line lung defence against infection. We analysed the role of MBL on susceptibility to pneumococcal infection and the existence of linkage disequilibrium (LD) among the four genes.

Variants at the promoter of the interleukin-6 gene are associated with severity and outcome of pneumococcal community-acquired pneumonia.

Purpose: Conflicting results about the role of genetic variability at IL6, particularly the -174 G/C single nucleotide polymorphism (SNP), in sepsis have been reported. We studied the genetic variability at IL6 in patients with community-acquired pneumonia (CAP) and pneumococcal CAP (P-CAP).

Methods: This was a multicenter, prospective observational study.

The Fcγ receptor IIA-H/H131 genotype is associated with bacteremia in pneumococcal community-acquired pneumonia.

Objective: To assess the potential association of the functional polymorphism rs1801274 in the receptor IIa for the Fc portion of immunoglobin G (FcγRIIa) gene (FCGR2A-H131R) with the susceptibility to and the severity of community-acquired pneumonia (CAP).

Design: Multicenter prospective and observational study.

Setting: Four university hospitals in Spain.

Influence of genetic variability at the surfactant proteins A and D in community-acquired pneumonia: a prospective, observational, genetic study.

Introduction: Genetic variability of the pulmonary surfactant proteins A and D may affect clearance of microorganisms and the extent of the inflammatory response. The genes of these collectins (SFTPA1, SFTPA2 and SFTPD) are located in a cluster at 10q21-24. The objective of this study was to evaluate the existence of linkage disequilibrium (LD) among these genes, and the association of variability at these genes with susceptibility and outcome of community-acquired pneumonia (CAP).

[Geographical variations in the prevalence of COPD in Spain: relationship to smoking, death rates and other determining factors].

Background: The EPI-SCAN study (Epidemiologic Study of COPD in Spain), conducted from May 2006 to July 2007, determined that the prevalence of COPD in Spain according to the GOLD criteria was 10.2% of the 40 to 80 years population. Little is known about the current geographical variation of COPD in Spain.