- ICH GCP
- US Clinical Trials Registry
- Klinisk forsøg NCT03602014
Dosisrespons på Norepinephrin-prækursoren Droxidopa hos hypotensive personer med rygmarvsskade
Målet med denne undersøgelse er at bestemme effektiviteten af lægemidlet Droxidopa (Northera) til at øge blodtrykket hos personer med hypotension, lavt blodtryk, som er klassificeret som blodtryk mindre end 110/70 hos mænd og 100/70 hos kvinder. Det første mål er at bestemme andelen af patienter med rygmarvsskade (SCI), som har en normotensiv respons på Droxidopa. Den anden er at bestemme andelen af individer med SCI, som udtrykker et hypertensivt respons på Droxidopa. Et normalt blodtryk varierer fra 111-139 hos mænd og 101-139 hos kvinder, og et hypertensivt blodtryk er noget højere end 140 hos mænd og kvinder.
Undersøgelsen ville finde sted i James J. Peters VA Medical Center (JJPVAMC) og The Icahn School of Medicine ved Mount Sinai (ISMMS) på Manhattan, New York.
Studieoversigt
Status
Betingelser
Intervention / Behandling
Detaljeret beskrivelse
Undersøgelsestype
Tilmelding (Faktiske)
Fase
- Fase 4
Kontakter og lokationer
Studiesteder
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New York
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Bronx, New York, Forenede Stater, 10468
- James J. Peters Veteran's Affair Medical Center
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New York, New York, Forenede Stater, 10029
- The Icahn School of Medicine at Mount Sinai
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Deltagelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
Tager imod sunde frivillige
Beskrivelse
Inklusionskriterier:
Undersøgelse 1:
- Mand eller kvinde i alderen 18 til 89 med traumatisk SCI.
SCI-emner (n=40):
- Ethvert niveau af skade;
- Enhver American Spinal Injury Association Impairment Scale (AIS) grad af SCI;
- Ikke-ventilator afhængig
- Primært kørestolsafhængig for mobilitet;
- Skadens varighed < 1 år
Lavt blodtryk:
- Systolisk BP mindre end 110 mmHg og/eller diastolisk BP mindre end 70 mmHg for mænd.
- Systolisk BP mindre end 100 mmHg og/eller diastolisk BP mindre end 70 mmHg for kvinder.
- Det primære sprog er engelsk.
Kan give informeret samtykke
Undersøgelse 2:
- Mand eller kvinde i alderen 18 til 89 med traumatisk SCI.
SCI-emner (n=40):
- Ethvert niveau af skade;
- Enhver AIS-grad af SCI;
- Ikke-ventilator afhængig
- Primært kørestolsafhængig for mobilitet
- Skadens varighed < 1 år
Lavt blodtryk:
- Systolisk BP mindre end 110 mmHg og/eller diastolisk BP mindre end 70 mmHg for mænd.
- Systolisk BP mindre end 100 mmHg og/eller diastolisk BP mindre end 70 mmHg for kvinder.
- Det primære sprog er engelsk.
- Kan give informeret samtykke
- Viste et normotensivt blodtryk som svar på Droxidopa under undersøgelse 1.
Ekskluderingskriterier:
- Aktuel sygdom eller infektion
Personer med hyppig eller svær autonom dysrefleksi:
- Mere end 3 symptomatiske hændelser om ugen
- BP ≥140/90 mmHg
- Signifikante negative subjektive symptomer rapportering
- Forhøjet blodtryk
- Enhver anden neurologisk tilstand end SCI (Alzheimers sygdom, demens, slagtilfælde, multipel sklerose, Parkinsons sygdom osv.)
- Anamnese med epilepsi eller anden anfaldssygdom
- Historie med traumatisk hjerneskade (TBI)
- Lever- eller nyresygdom
- Blæreproblemer, herunder blokering af urinen og/eller svag urinstrøm.
- Diagnose af en psykiatrisk lidelse som skizofreni eller bipolar lidelse
- Kendt arteriesygdom, hjertesvigt, atrioventrikulær blokering og uregelmæssig hjerterytme
- Enhver allergi over for droxidopa, asprin, polyethylenoxid, polyethylenglycol, hydroxypropylcellulose, butyleret hydroxytoluen, magnesiumstearat, hypromellose, gul jernoxid og rød jernoxid
- Større operation inden for de sidste 30 dage
- Ulovligt stofmisbrug inden for de seneste 6 måneder
- Gravid
Din receptpligtige medicin vil blive gennemgået af undersøgelsens efterforskere og forskningspersonale. Hvis du i øjeblikket tager medicin til at behandle nogen af følgende, bedes du gøre efterforskerne opmærksomme:
d. Depression, Skizofreni, Attention Deficit Hyperactivity Disorder (ADHD) e. Smerter (opioider) f. Infektion eller sygdom (antibiotika) g. Erektil dysfunktion (Viagra, Cialis osv.) h. Overaktiv blære i. Højt eller lavt blodtryk j. Migræne hovedpine k. Malaria l. astma
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Behandling
- Tildeling: Randomiseret
- Interventionel model: Parallel tildeling
- Maskning: Dobbelt
Våben og indgreb
Deltagergruppe / Arm |
Intervention / Behandling |
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Eksperimentel: Studie 1: Dosisoptimering af Northera
Forsøgspersonerne vil blive administreret oralt droxidopa i en dosiseskalering, åben-label måde, der begynder med 200 mg.
Dosis vil blive justeret opad med 100 mg ved efterfølgende besøg, indtil det gennemsnitlige systoliske blodtryk (SBP) målt 60-120 minutter efter dosisindgivelse er 111-139 mmHg hos mænd og 101-139 mmHg hos kvinder, vedvarende stigning (≥ 30 minutter i træk) ) ved siddende SBP ≥ 140/100 mmHg nås maksimal dosis på 800 mg uden tilstrækkelig SBP-respons.
Forsøgspersoner vil besøge testlaboratoriet på så få som 1 (200 mg) og så mange som 7 (800 mg) dage.
Siddende kardiovaskulære vurderinger vil blive overvåget og registreret med 15 minutters intervaller i 4 timer, og spørgeskemaet om bivirkninger vil blive administreret hver time i løbet af den 4-timers undersøgelse.
Hvert studiebesøg vil tage omkring 5 timer.
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Studie 1 er et åbent dosisoptimerende forsøg med Northera fra et dosisområde på 200 mg op til 800 mg.
Andre navne:
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Placebo komparator: Undersøgelse 2: Blindet Placebo & Northera
Deltagerne vil derefter blive indgivet enten oral optimal dosis af Northera (Droxidopa) eller matchende placebo på en dobbeltblindet måde og vil forblive i liggende stilling i 60 minutter.
Forsøgspersonerne forbliver i deres kørestol til instrumentering, som vil omfatte: 1) EKG, 2) brachial BP, 3) finger arteriolær BP og 4) Cerebral Blood Flow Velocity (CBFv).
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Studie 1 er et åbent dosisoptimerende forsøg med Northera fra et dosisområde på 200 mg op til 800 mg.
Andre navne:
Undersøgelse 2 er blindet placebokontrolleret forsøg med den individualiserede optimale dosis af droxidopa bestemt af undersøgelse 1.
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Hvad måler undersøgelsen?
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
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Andel af systolisk BP inden for et normotensivt interval
Tidsramme: Op til 240 minutter efter administration af Droxidopa
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At bestemme andelen (%) af normotensivt systolisk blodtryk for mænd = (110-120 mmHg); og kvinder = (101-120 mmHg) efter administration af Droxidopa.
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Op til 240 minutter efter administration af Droxidopa
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Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
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Systolisk blodtryk på ryggen
Tidsramme: Inden for 60 minutter efter administration af Droxidopa eller placebo
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For at måle systolisk blodtryk efter administration af Droxidopa sammenlignet med placebo hos hypotensive deltagere med SCI
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Inden for 60 minutter efter administration af Droxidopa eller placebo
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Ortostatisk systolisk blodtryk
Tidsramme: 60-90 minutter efter administration af Droxidopa eller placebo
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For at dokumentere systolisk blodtrykssvar på head-up tilt til 70 grader efter administration af Droxidopa sammenlignet med placebo hos hypotensive deltagere med SCI.
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60-90 minutter efter administration af Droxidopa eller placebo
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Ortostatisk cerebral blodstrøm
Tidsramme: 60-90 minutter efter administration af Droxidopa eller placebo
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For at sammenligne cerebral blodgennemstrømningshastighed i den midterste cerebrale arterie efter administration af placebo sammenlignet med administration af Nordtera (Droxidopa)
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60-90 minutter efter administration af Droxidopa eller placebo
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Samarbejdspartnere og efterforskere
Samarbejdspartnere
Efterforskere
- Ledende efterforsker: Jill M Wecht, Ed.D, James J. Peter's VAMC
Publikationer og nyttige links
Generelle publikationer
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Begreber relateret til denne undersøgelse
Yderligere relevante MeSH-vilkår
- Sygdomme i centralnervesystemet
- Sygdomme i nervesystemet
- Karsygdomme
- Hjerte-kar-sygdomme
- Traumer, nervesystemet
- Rygmarvssygdomme
- Primære dysautonomier
- Sygdomme i det autonome nervesystem
- Ortostatisk intolerance
- Sår og skader
- Hypotension
- Rygmarvsskader
- Hypotension, ortostatisk
- Antiparkinson-midler
- Midler mod dyskinesi
- Droxidopa
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- WEC-17-042
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