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Systemic Endothelial Abnormalities in COPD

8. juli 2019 opdateret af: Imperial College London

Systemic Endothelial Abnormalities in COPD Measured by Radial Artery Applanation Tonometry (RAAP)

The purpose of this project is to validate the peripheral arterial pressure waveform measurements technique of RAAP (radial artery applanation tonometry), in patients with moderate and severe COPD (Chronic Obstructive Pulmonary Disease), and to assess the degree of systemic endothelial dysfunction in these patients compared to cigarette smokers with normal lung function and non-smokers with normal lung function.

Studieoversigt

Status

Trukket tilbage

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

Patients with moderate and severe COPD (GOLD stage II and III) will be studied and their results will be compared with age-matched healthy non- smokers and smokers.

RAAP will be taken every 5 minutes for 15 minutes before salbutamol and every 5 minutes for another 15 minutes after salbutamol.

Several parameters of lipoprotein profiles, anti-oxidant plasma capacity, inflammatory cytokines, hormones, growth factors and vascular cell adhesion molecules will be studied in blood. In addition, several inflammatory and oxidative markers will be studied in exhaled breath condensate. Lung function and impulse oscillometry will be made to investigate airway resistance, and exhaled NO (nitric oxide) at different expiratory flows will be measured to assess alveolar and bronchial NO. Clinical assessment including dyspnoea and depression scores will also be made.

Undersøgelsestype

Observationel

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

  • Det Forenede Kongerige
      • London, Det Forenede Kongerige, SW3 6LY
        • National Heart and Lung Institute
      • London, Det Forenede Kongerige, SW3 6LY
        • Imperial College London

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

40 år til 80 år (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ja

Køn, der er berettiget til at studere

Han

Prøveudtagningsmetode

Ikke-sandsynlighedsprøve

Studiebefolkning

Smokers, COPD

Beskrivelse

Inclusion Criteria:

  • • Male subjects with COPD with FEV1/FVC<70%; predicted defined as either stage moderate GOLD II (n=15) and severe GOLD III (n=7) diagnosis according to GOLD criteria (Global Strategy for the Diagnosis, Management, and Prevention of COPD) or Male subjects who are age-matched non-smokers (n=8) and male smokers (n=8) with normal lung function (FEV1>80%, FEV1/FVC>70%, n=8)

    • Smokers:

An active smoker with a pack history of >10 pack years [number of pack years = (number of cigarettes per day / 20) x number of years smoked]. Smokers need to report the time when last cigarette was smoked (no less than 6 hours before the study visit).

  • Patients will be allowed to use their current anticholinergic bronchodilators and continue on the dose of inhaled corticosteroids they are currently using. However they should refrain from short and long-acting β2-agonists for 6 and 12 hours, respectively, before the study visit.
  • Aged 40 80 years inclusive
  • Body mass index within the range 19-32kg/m2 inclusive
  • FEV1 <15% reversibility (not % predicted) and an increase of <200ml after inhaled β2-agonists (400μg salbutamol).
  • Capable of giving informed consent, which includes compliance with the requirements and restrictions listed in the consent form.
  • Subject is available to complete the study.

Exclusion Criteria:

  • • As a result of the medical interview, physical examination or screening investigations, the Physician Responsible considers the volunteer unfit for the study.

    • The subject has participated in a study with a new molecular entity during the previous 3 months or any other clinical trial during the previous 3 months. In case of a non invasive, clinical trial not involving new molecular entities a 2 week washout will be sufficient
    • The subject regularly, or on average, drinks more than 21 units of alcohol per week.
    • The subject has received oral steroids within 2 weeks prior to study entry.
    • The subject has history of an upper respiratory infection (including sinusitis) within 2 weeks prior to study entry
    • The subject has been hospitalised for a COPD exacerbation within 1 month of study entry.

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

Kohorter og interventioner

Gruppe / kohorte
Intervention / Behandling
1
Procedure: radial artery applanation tonometry (RAAP)
non-invasive tonometry
2
Procedure: radial artery applanation tonometry (RAAP)
non-invasive tonometry

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Imperial College London

Efterforskere

  • Ledende efterforsker: Sergei A Kharitonov, MD PhD, Imperial College London
  • Studieleder: Peter J Barnes, MD, Imperial College London

Publikationer og nyttige links

Den person, der er ansvarlig for at indtaste oplysninger om undersøgelsen, leverer frivilligt disse publikationer. Disse kan handle om alt relateret til undersøgelsen.

Hjælpsomme links

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Forventet)

1. januar 2006

Primær færdiggørelse (Forventet)

1. november 2008

Studieafslutning (Forventet)

1. november 2008

Datoer for studieregistrering

Først indsendt

7. november 2007

Først indsendt, der opfyldte QC-kriterier

7. november 2007

Først opslået (Skøn)

8. november 2007

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

10. juli 2019

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

8. juli 2019

Sidst verificeret

1. juli 2019

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • 9022006

Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .

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