- ICH GCP
- US Clinical Trials Registry
- Klinisk utprøving NCT00607867
LoBAG30 Diet in Patients on Metformin (LoBAG Diet)
10. desember 2014 oppdatert av: US Department of Veterans Affairs
Metabolic Response to a LoBAG30 Diet in Diabetic Patients on Metformin
We will determine the metabolic response to a Low Biologically Available Glucose Diet (LoBAG30) in subjects currently receiving the maximum dose of metformin as monotherapy in whom the glycohemoglobin is not at an acceptable level (>8.0%).
Our hypothesis is that introduction of a LoBAG30 diet to subjects currently treated with a full therapeutic dose of metformin will improve blood glucose control in people who have not achieved an acceptable total glycohemoglobin on metformin alone.
Studieoversikt
Status
Avsluttet
Forhold
Intervensjon / Behandling
Detaljert beskrivelse
Subjects will ingest a control diet (55% carbohydrate (CHO), 15% protein, 30% fat) or a LoBAG30 diet (30% CHO, 30% protein, 40% fat) in a parallel design with block randomization in pairs of two.
Subjects will return to the study center twice each week while on the diets to have blood glucose, glycohemoglobin, lactate, weight and blood pressure measured, and to have urine assayed for urea and creatinine.
At the beginning and end of the 5 week study period, the subjects will be admitted to the study center for 28 hours during which time blood will be drawn for 24 hour profiles of glucose, insulin, other hormones and several metabolites.
For those subjects randomized to the LoBAG30 arm of the study, the control diet will be given during the first 24 hour study period; the assigned diet will be given at the end of the 5 week period.
Studietype
Intervensjonell
Registrering (Faktiske)
20
Fase
- Ikke aktuelt
Kontakter og plasseringer
Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.
Studiesteder
-
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Minnesota
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Minneapolis, Minnesota, Forente stater, 55417
- VA Medical Center, Minneapolis
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-
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
50 år til 70 år (Voksen, Eldre voksen)
Tar imot friske frivillige
Nei
Kjønn som er kvalifisert for studier
Alle
Beskrivelse
Inclusion Criteria:
- People with type 2 diabetes mellitus who currently are receiving the maximal dose of metformin monotherapy (2500 mg/day).
- These subjects will have had a stable glycohemoglobin (tGHb) in an unacceptably high range (8-11%) for at least 4 months prior to beginning the study.
- Subjects with tGHB > 11% (HbA1c > 10%) will not be recruited into the study.
Exclusion Criteria:
- Hematological abnormalities
- liver disease
- kidney disease
- macroalbuminuria (>300 mg albumin/24 hours)
- untreated thyroid disease
- congestive heart failure
- angina
- life-threatening malignancies
- proliferative retinopathy
- severe diabetic neuropathy
- peripheral vascular disease
- serious psychological disorders
- a body mass index > 35
and a fasting triglyceride of >400 mg/dl.
- Subjects taking slow-release metformin will not be studied.
- Subjects taking medications other than metformin, known to affect fuel metabolism such as:
- insulin
- the sulfonylureas
- glucagon-like peptide 1 (GLP-1) analogs and metabolic inhibitors
- pramlintide
- prednisone and similar steroids
- thyroid hormone
- antipsychotic medications
- thiazide diuretics
- medroxyprogesterone
high dose aspirin, also will be excluded.
- If concentrations of serum folate, B12 or iron are low, the subject will be excluded from the study until corrected, i.e. until normal concentrations are recorded.
Studieplan
Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.
Hvordan er studiet utformet?
Designdetaljer
- Primært formål: Behandling
- Tildeling: Randomisert
- Intervensjonsmodell: Parallell tildeling
- Masking: Ingen (Open Label)
Våpen og intervensjoner
Deltakergruppe / Arm |
Intervensjon / Behandling |
---|---|
Aktiv komparator: Arm 1
A LoBAG30, weight maintenance diet will be given to subjects on metformin.
All food will be provided for 5 weeks.
|
A LoBAG30 diet consists of 30% of total energy intake as carbohydrate, 30% protein, and 40% fat.
|
Placebo komparator: Arm 2
A weight maintenance, control diet consisting of 55% carbohydrate, 15% protein, 30% fat will be given to subjects on metformin.
All food will be provided for 5 weeks.
|
A control diet consists of 55% of total energy intake as carbohydrate, 15% protein, 30% fat
|
Hva måler studien?
Primære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
---|---|---|
Change in %Hemoglobin A1c at 5 Weeks From Baseline
Tidsramme: Baseline and 5 weeks after dietary intervention
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Hemoglobin A1c measured before and after 5 weeks on the diet
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Baseline and 5 weeks after dietary intervention
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Change in Total Glucose Area at 5 Weeks From Baseline
Tidsramme: Baseline and 5 weeks after dietary intervention
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The area response is measured using zero as baseline.
The area is measured before dietary intervention, and following 5 weeks of dietary intervention.
|
Baseline and 5 weeks after dietary intervention
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Change in Body Weight at 5 Weeks From Baseline
Tidsramme: baseline and 5 weeks after dietary intervention
|
Subjects were to remain weight stable.
We expected less than 2 pound weight change over 5 weeks.
Weight was measured before dietary intervention, and after 5 weeks of dietary intervention.
|
baseline and 5 weeks after dietary intervention
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Change in Overnight Fasting Glucose Concentration at 5 Weeks From Baseline
Tidsramme: baseline and 5 weeks after dietary intervention
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Overnight fasting glucose concentration was measured before dietary intervention and after 5 weeks of dietary intervention.
|
baseline and 5 weeks after dietary intervention
|
Sekundære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
---|---|---|
Microalbumin Excretion
Tidsramme: baseline and 5 weeks after dietary intervention
|
change in urinary albumin excretion was measured before dietary intervention and after 5 weeks of dietary intervention
|
baseline and 5 weeks after dietary intervention
|
Change in Fasting Triglycerides at 5 Weeks From Baseline
Tidsramme: baseline and 5 weeks after dietary intervention
|
Overnight fasting triglycerides concentration was measured before dietary intervention and after 5 weeks of dietary intervention
|
baseline and 5 weeks after dietary intervention
|
Samarbeidspartnere og etterforskere
Det er her du vil finne personer og organisasjoner som er involvert i denne studien.
Etterforskere
- Hovedetterforsker: Mary Gannon, PhD, Minneapolis Veterans Affairs Medical Center
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. april 2008
Primær fullføring (Faktiske)
1. januar 2011
Studiet fullført (Faktiske)
1. mars 2011
Datoer for studieregistrering
Først innsendt
31. januar 2008
Først innsendt som oppfylte QC-kriteriene
5. februar 2008
Først lagt ut (Anslag)
6. februar 2008
Oppdateringer av studieposter
Sist oppdatering lagt ut (Anslag)
12. desember 2014
Siste oppdatering sendt inn som oppfylte QC-kriteriene
10. desember 2014
Sist bekreftet
1. desember 2014
Mer informasjon
Begreper knyttet til denne studien
Nøkkelord
Ytterligere relevante MeSH-vilkår
Andre studie-ID-numre
- CLIN-010-07F
Denne informasjonen ble hentet direkte fra nettstedet clinicaltrials.gov uten noen endringer. Hvis du har noen forespørsler om å endre, fjerne eller oppdatere studiedetaljene dine, vennligst kontakt register@clinicaltrials.gov. Så snart en endring er implementert på clinicaltrials.gov, vil denne også bli oppdatert automatisk på nettstedet vårt. .
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