Transforming Growth Factor Beta Signalling in the Development of Muscle Weakness in Pulmonary Arterial Hypertension
Studieoversigt
Status
Status
Betingelser
Betingelser
Undersøgelsestype
Undersøgelsestype
Tilmelding (Faktiske)
Tilmelding
Kontakter og lokationer
Studiesteder
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-
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London, Det Forenede Kongerige, SW36NP
- Royal Brompton Hospital
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-
Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
Tager imod sunde frivillige
Køn, der er berettiget til at studere
Prøveudtagningsmetode
Studiebefolkning
Beskrivelse
Inclusion Criteria:
- Patients with pulmonary arterial hypertension with New York Heart Association stage II - III disease will be eligible for recruitment in the patient portion of the trial. Interested healthy age matched volunteers will also be recruited.
Exclusion Criteria:
- Patients and volunteers will be excluded if they have significant co-morbidities including other cardiorespiratory disease, metabolic abnormalities including diabetes or thyroid disorders. They will be excluded if they cannot safely exercise and perform a six minute walk test or if they are wheelchair bound.
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Observationsmodeller: Kohorte
- Tidsperspektiver: Andet
Antal grupper/kohorter
Kohorter og interventioner
Gruppe / kohorteGruppe / kohorte |
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PH with wasting
This group of patients with idiopathic pulmonary arterial hypertension exhibit quadriceps wasting
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PH no wasting
This groups of patients with idiopathic pulmonary arterial hypertension exhibit no evidence of muscle wasting
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Controls
This group of volunteers does not have pulmonary arterial hypertension and would not be expected to have muscle wasting
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Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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Plasma growth and differentiation factor 15 levels in participants with and without muscle wasting
Tidsramme: 30 months
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Muscle wasting will be defined by quadriceps cross sectional area measured by ultrasound
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30 months
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Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Correlation of plasma Growth and differentiation factor 15 levels with muscle strength
Tidsramme: 30 months
|
Muscle strength will be measured by quadriceps maximal volitional capacity percent predicted
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30 months
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Change in fibre type in muscle biopsy
Tidsramme: 30 months
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30 months
|
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GDF-15 levels in biopsy specimens
Tidsramme: 30 months
|
30 months
|
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Correlation of plasma Growth and differentiation factor 15 levels with brain natriuretic protein levels
Tidsramme: 30 months
|
30 months
|
|
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Correlation of plasma Growth and differentiation factor 15 levels with fat free mass index
Tidsramme: 30 months
|
Fat free mass index will be measured by bioelectrical impedence
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30 months
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Correlation of plasma Growth and differentiation factor 15 levels with quality of life
Tidsramme: 30 months
|
Quality of life will be measured by St. George's respiratory questionnaire
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30 months
|
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Correlation of plasma Growth and differentiation factor 15 levels with exercise tolerance
Tidsramme: 30 months
|
Exercise tolerance will be measured by six minute walk test
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30 months
|
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Correlation of plasma Growth and differentiation factor levels 15 with physical activity levels
Tidsramme: 30 months
|
Physical activity will be measured by Sensewear armband
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30 months
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Correlation of plasma Growth and differentiation factor levels 15 with echocardiographic measures of severity of pulmonary hypertension
Tidsramme: 30 months
|
30 months
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Correlation of GDF-15 levels in biopsy specimens with muscle wasting and weakness
Tidsramme: 30 months
|
Wasting will be measured by quadriceps cross sectional area and weakness will be defined by quadriceps maximal volitional capacity
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30 months
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Determine the contribution of atrophy and autophagy to muscle wasting in PAH
Tidsramme: 30 months
|
Muscle biopsy specimens will be evaluated using microscopy and real time polymerase chain reaction
|
30 months
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Determine the contribution of SMAD and non-SMAD signalling pathways to the development of muscle weakness and wasting in PAH
Tidsramme: 30 months
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Phosphorylation of SMAD and non-SMAD signalling will be determined by western blot
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30 months
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Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Samarbejdspartnere
Samarbejdspartnere
Efterforskere
Efterforskere
- Ledende efterforsker: Stephen J Wort, MBBS, Imperial College / Royal Brompton Hospital
Publikationer og nyttige links
Datoer for undersøgelser
Studer store datoer
Studiestart
Studiestart
Primær færdiggørelse (Faktiske)
Primær færdiggørelse
Studieafslutning (Faktiske)
Studieafslutning
Datoer for studieregistrering
Først indsendt
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først indsendt, der opfyldte QC-kriterier
Først opslået (Skøn)
Først opslået
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering sendt
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Nøgleord
Yderligere relevante MeSH-vilkår
- Patologiske processer
- Hjerte-kar-sygdomme
- Karsygdomme
- Sygdomme i nervesystemet
- Luftvejssygdomme
- Lungesygdomme
- Neurologiske manifestationer
- Muskuloskeletale sygdomme
- Muskelsygdomme
- Neuromuskulære manifestationer
- Hypertension, lunge
- Forhøjet blodtryk
- Muskelsvaghed
- Pulmonal arteriel hypertension
- Familiær primær pulmonal hypertension
- Parese
- Asteni
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- 13IC0457
Plan for individuelle deltagerdata (IPD)
Planlægger du at dele individuelle deltagerdata (IPD)?
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