Phenotypical Approach of the Drug Metabolizing Hormones Activity Before and After Roux-en Y-Gastric Bypass (SODA)
Phenotypical Approach of the Drug Metabolizing Hormones Activity (CYP1A2, CYP2D6, CYP2C9, CYP2C19, CYP3A4 and P-gp) Before and After Roux-en Y-Gastric Bypass. The SODA Protocol: Surgery for Obesity and Drug Availability
The activity of drug-metabolizing enzymes and transporters evolutes after Roux-en-Y gastric Bypass.
Primary aim : To study the intra individual evolution of phenotypical markers of different drug metabolizing enzymes and one transporter (CYP1A2, CYP2D6, CYP2C9, CYP2C19, CYP3A4 and P-gp), using a cocktail phenotypic approach, after Roux-en-Y gastric Bypass.
Studieoversigt
Status
Status
Betingelser
Betingelser
Intervention / Behandling
Intervention / Behandling
Detaljeret beskrivelse
Principal Judgement criteria :
Phenotypical markers of enzymes and transporter activity before, at 5-8 weeks and 25-30 weeks following surgery.
Secondary judgement criteria :
- Genetic polymorphisms known to affect expression and/or activity of enzymes and transporter.
- Intestinal and hepatic expression and activity of the enzymes and transporter of interest.
- Markers of inflammation Methodology, study design : open-labelled monocentric study.
Sample size : It will be a descriptive experimental study involving 12 subjects.
Study design : In centre 1: Inclusion at least 2 weeks prior to surgery (V0)
In centre 2: Three studies of 12 hours each will occur (in addition with the usual clinical and surgical follow up) at three times periods: in the 8 weeks period before surgery (V1), at 5-8 weeks after surgery (V2) and at 25-30 weeks after surgery (V3).
In centre 3: the patients will undergo gastric bypass surgery (corresponding to the usual clinical and surgical follow up) and samples of jejunum and liver will be obtain during the surgery (J0).
Centres 4 and 5 are involved in samples analysis.Hence, patients will attend 3 visits, in addition to the usual clinical and surgical follow-up.
Study duration: 26 months (with duration of inclusion of 18 months)
Duration for a patient: 38 weeks at maximum (8 months)
Investigating center and participating units: one center enrolling the patients and three centers involving in the others investigations.
Undersøgelsestype
Undersøgelsestype
Tilmelding (Faktiske)
Tilmelding
Fase
Fase
- Fase 1
Kontakter og lokationer
Studiesteder
-
-
-
Paris, Frankrig, 75010
- Unit of internal medicine A, Lariboisière Hospital
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-
Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
Tager imod sunde frivillige
Køn, der er berettiget til at studere
Beskrivelse
Inclusion Criteria:
- Patients with morbid obesity (IMC > 40 kg/m²) or severe obesity (IMC=35-40 kg/m²) with co morbidities (sleep apnea syndrome or hypertension without treatment or steatosis hepatitis) candidates for a gastric bypass.
- Patient not receiving more than two treatments whose effect on the expression of enzymes and drug transporters is zero other than vitamins.
- Patient agreeing to participate at three studies of one day (12 hours) occurring at three different periods.
- Patients aged between 18 and 60 years old.
- Patient giving its well-informed and free consent.
- Patient without allergy to any of the drugs used for test.
- Patients living in France during the study and with French social security
Exclusion Criteria:
- Tabacco
- Contraception including estrogens compounds
- Medication other than vitamins.
- Allergy
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Behandling
- Tildeling: N/A
- Interventionel model: Enkelt gruppeopgave
- Maskning: Ingen (Åben etiket)
Antal våben
Våben og indgreb
Deltagergruppe / ArmDeltagergruppe / Arm |
Intervention / BehandlingIntervention / Behandling |
|---|---|
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Eksperimentel: phenotypical approach
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each visit : CAFEINE : (solution orale) 2 ampoules de 2 ml = 100 mg de CAFEINE DEXTROMETHORPHANE : 15 ml de sirop contains 20 mg =>22,5 ml = 30mg Midazolam : (solution injectable, ampoule 1 ml = 1 mg) : deux ampoules = 2 mg Digoxine nativelle (solution injectable, ampoule de 0.5mg) : 1 ampoule per os = 0.5 mg Losartan 50 mg : 1cp de 50mg
|
Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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Phenotypical markers of enzymes and transporter activity
Tidsramme: at 5-8weeks
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plasmatic [Paraxanthine/caffeine] ratio (T4H) at 5-8 weeks following surgery.
- plasmatic [Omeprazole/5-hydroxyomeprazole] ratio (T4H) at 5-8 weeks following surgery.
- urinary Log (dextromethorphan/dextrorphan) (T0-T8h) at 5-8 weeks following surgery.
- urinary Losartan/ E-3174 (T0-8h) at 5-8 weeks following surgery.
- plasmatic AUC 0-inf midazolam at 5-8 weeks following surgery.
- plasmatic AUC 0-inf digoxin at 5-8 weeks following surgery
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at 5-8weeks
|
|
Phenotypical markers of enzymes and transporter activity
Tidsramme: 25-30 weeks
|
plasmatic [Paraxanthine/caffeine] ratio (T4H) at 25-30 weeks following surgery.
- plasmatic [Omeprazole/5-hydroxyomeprazole] ratio (T4H) at 25-30 weeks following surgery.
- urinary Log (dextromethorphan/dextrorphan) (T0-T8h) at 25-30 weeks following surgery.
- urinary Losartan/ E-3174 (T0-8h) at 25-30 weeks following surgery.
- plasmatic AUC 0-inf midazolam at 25-30 weeks following surgery.
- plasmatic AUC 0-inf digoxin at 25-30 weeks following surgery
|
25-30 weeks
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Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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Intestinal and hepatic expression and activity of the enzymes and transporter of interest and markers of inflammation
Tidsramme: before surgery
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Intestinal and hepatic expression and activity of the enzymes and transporter of interest and markers of inflammation
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before surgery
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Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Samarbejdspartnere
Samarbejdspartnere
Efterforskere
Efterforskere
- Ledende efterforsker: Célia LLORET-LINARES, MD,, Assistance Publique - Hôpitaux de Paris
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 (Skøn)
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
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- P100506
- 2011-A00312-39 (Anden identifikator: IDRCB)
Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter
Studerer et amerikansk FDA-reguleret lægemiddelprodukt
Studerer et amerikansk FDA-reguleret enhedsprodukt
produkt fremstillet i og eksporteret fra U.S.A.
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