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Mucins and Toll-like Receptors in Asthma (MUCITOLL)

26. oktober 2016 oppdatert av: Fundació Institut de Recerca de l'Hospital de la Santa Creu i Sant Pau

Asthma With Bronchial Hypersecretion: Expression of Mucins and Toll-like Receptors in Sputum and Blood

This study raises two main hypotheses: 1) Asthmatics patients who present with bronchial hypersecretion differ phenotypically from asthmatic patients without hypersecretion and 2) mucins in asthmatic patients with hypersecretion of bronchial mucus and the expression of TLRs differ from non-mucus hypersecretory asthmatics patients.

Studieoversikt

Status

Fullført

Forhold

Intervensjon / Behandling

Detaljert beskrivelse

Asthma with bronchial hypersecretion is a type of asthma poorly studied. Its pathogenesis is not well understood but probably is related to the innate impaired immunity, particularly with "toll-like receptors" (TLR) and secretory mucin (MUC).

Objectives 1) Define the clinical and inflammatory phenotype of asthma with bronchial hypersecretion of mucus. 2) Compare the type of mucin present in induced sputum (IS) of patients with and without bronchial hypersecretion. 3) Determine the expression of TLRs in the IS and in the peripheral blood of asthmatics with and without bronchial hypersecretion.

Method: Cross-sectional study which included 43 asthmatic patients, 19 with and 24 without bronchial hypersecretion. All patients underwent the following: IS, spirometry, fractional exhaled nitric oxide (FeNO), prick test, total IgE and blood albumin. Analysis of mucins (MUC2, MUC5AC, MUC5B and MUC1) was determined by ELISA and expression of TLR2 and TLR4 by flow cytometry. The level of asthma control was determined by the asthma control test questionnaire (ACT) and quality of life was assessed by the MiniAQLQ questionnaire.

Studietype

Observasjonsmessig

Registrering (Faktiske)

43

Kontakter og plasseringer

Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.

Studiesteder

  • Spania
      • Barcelona, Spania, 08041
        • Hospital de la Santa Creu i Sant Pau. Carrer Mas Casanovas 90.

Deltakelseskriterier

Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.

Kvalifikasjonskriterier

Alder som er kvalifisert for studier

18 år til 80 år (Voksen, Eldre voksen)

Tar imot friske frivillige

Nei

Kjønn som er kvalifisert for studier

Alle

Prøvetakingsmetode

Sannsynlighetsprøve

Studiepopulasjon

Male and female subjects aged > 18 years, non-smokers, who fulfilled the diagnostic criteria of asthma were consecutively enrolled from the Asthma Unit outpatient clinic of our institution. We defined asthma as a history of variable respiratory symptoms and evidence of variable expiratory airflow limitation. All patients had a positive bronchodilator test or daily peak expiratory flow variability greater than 20%, or a positive methacholine challenge test documented in case history. Asthma severity was defined according to the Global Initiative for Asthma Management (GINA)

Beskrivelse

Inclusion Criteria:

  • Non-smokers, asthma diagnosed as per the Global INitiative for Asthma (GINA) criteria on maintenance treatment for asthma, aged 18 to 80 years.

Exclusion Criteria:

  • Patients were excluded from the study if they had a respiratory tract infection and/or required the use of oral corticosteroids within 30 days prior to inclusion; if they had a concomitant disease (sarcoidosis, lung cancer, pulmonary tuberculosis, bronchiectasis, nephropathy, rheumatic or liver disease); significant comorbidity that could affect the study results in the physician's judgment; or a cognitive impairment that could limit their comprehension of the subject under study or their ability to participate

Studieplan

Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.

Hvordan er studiet utformet?

Designdetaljer

Kohorter og intervensjoner

Gruppe / Kohort
Intervensjon / Behandling
asthma with bronchial hypersecretion
In a clinical study, participants are often divided into groups. Group one: they were defined as those who expectorated daily for at least three months for a minimum period of two consecutive years, without attribution to any other cause or disease.
Annen: clinical study
It is a comprehensive study in a large sample using multiple techniques to assess various aspects of the disease. All patients underwent the following : Induced Sputum, spirometry, fractional exhaled nitric oxide (FeNO), prick test, total IgE and blood albumin. Analysis of mucins and TLRs
asthma without hypersecretion
In a clinical study, participants are often divided into groups. Group two: We defined asthma as a history of variable respiratory symptoms and evidence of variable expiratory airflow limitation.
Annen: clinical study
It is a comprehensive study in a large sample using multiple techniques to assess various aspects of the disease. All patients underwent the following : Induced Sputum, spirometry, fractional exhaled nitric oxide (FeNO), prick test, total IgE and blood albumin. Analysis of mucins and TLRs

Hva måler studien?

Primære resultatmål

Resultatmål
Tidsramme
Number of asthmatic patients with bronchial hypersecretion
Tidsramme: 18 months
18 months

Sekundære resultatmål

Resultatmål
Tidsramme
Number of asthmatic patients with altered expression of TLRs
Tidsramme: 18 months
18 months
Number of asthmatic patients with altered expression of Mucins
Tidsramme: 18 months
18 months

Samarbeidspartnere og etterforskere

Det er her du vil finne personer og organisasjoner som er involvert i denne studien.

Sponsor

Fundació Institut de Recerca de l'Hospital de la Santa Creu i Sant Pau

Samarbeidspartnere

Spanish Respiratory Society

Etterforskere

  • Hovedetterforsker: Astrid Crespo, MD,PHD, Institut de Recerca de l'Hospital de la Santa Creu i Sant Pau

Studierekorddatoer

Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.

Studer hoveddatoer

Studiestart

1. januar 2014

Primær fullføring (Faktiske)

1. september 2015

Studiet fullført (Faktiske)

1. april 2016

Datoer for studieregistrering

Først innsendt

18. oktober 2016

Først innsendt som oppfylte QC-kriteriene

26. oktober 2016

Først lagt ut (Anslag)

28. oktober 2016

Oppdateringer av studieposter

Sist oppdatering lagt ut (Anslag)

28. oktober 2016

Siste oppdatering sendt inn som oppfylte QC-kriteriene

26. oktober 2016

Sist bekreftet

1. september 2015

Mer informasjon

Begreper knyttet til denne studien

Ytterligere relevante MeSH-vilkår

Andre studie-ID-numre

  • IIBSP-ROF-2011-106

Plan for individuelle deltakerdata (IPD)

Planlegger du å dele individuelle deltakerdata (IPD)?

NEI

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