Role of Glucagon In Glucose Control in Cystic Fibrosis Related Diabetes
24. Juni 2020 aktualisiert von: Yale University
Role of Glucagon in Glucose Control in Cystic Fibrosis Related Diabetes
This project is designed to begin to characterize the abnormalities of glucagon secretion in subjects with cystic fibrosis related diabetes along the spectrum of glucose tolerance.
Cystic fibrosis patients with normal glucose tolerance as well as cystic fibrosis related diabetes as well as control subjects will undergo an oral glucose tolerance test, mixed meal tolerance test, and one step hypoglycemic clamp.
Cystic fibrosis patients will then return 12 months later to undergo repeat mixed meal tolerance test and hypoglycemic clamp test.
Studienübersicht
Status
Abgeschlossen
Intervention / Behandlung
Detaillierte Beschreibung
This project is designed to begin to characterize the abnormalities of glucagon secretion in subjects with cystic fibrosis related diabetes along the spectrum of glucose tolerance. This will be a descriptive, cross-sectional and longitudinal cohort study in a sample of children and young adults with CF and a continuum of glucose tolerance compared to healthy age-matched controls.
Cystic fibrosis patients with normal glucose tolerance as well as cystic fibrosis related diabetes as well as control subjects will be admitted to the research unit on three separate occasions to undergo an oral glucose tolerance test, mixed meal tolerance test, and one step hypoglycemic clamp. Cystic fibrosis patients will then return 12 months later to undergo repeat mixed meal tolerance test and hypoglycemic clamp test.
Studientyp
Interventionell
Einschreibung (Tatsächlich)
7
Phase
- Frühphase 1
Kontakte und Standorte
Dieser Abschnitt enthält die Kontaktdaten derjenigen, die die Studie durchführen, und Informationen darüber, wo diese Studie durchgeführt wird.
Studienorte
-
-
Connecticut
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New Haven, Connecticut, Vereinigte Staaten, 06511
- Yale New Haven Hospital
-
-
Teilnahmekriterien
Forscher suchen nach Personen, die einer bestimmten Beschreibung entsprechen, die als Auswahlkriterien bezeichnet werden. Einige Beispiele für diese Kriterien sind der allgemeine Gesundheitszustand einer Person oder frühere Behandlungen.
Zulassungskriterien
Studienberechtigtes Alter
12 Jahre bis 45 Jahre (Kind, Erwachsene)
Akzeptiert gesunde Freiwillige
Ja
Studienberechtigte Geschlechter
Alle
Beschreibung
Inclusion Criteria:
- Diagnosis of CF by clinical or genetic determination
- Normal glucose tolerance or CFRD
- Subjects routinely taking systemic or inhaled glucocorticoids on stable regimen are eligible
Exclusion Criteria:
- Subjects with active pulmonary infection requiring supplemental doses of corticosteroids
- Use of any oral diabetes medications
- Subjects who are pregnant/lactating
- Subjects with poor compliance with pancreatic enzyme replacement therapy
Control Subjects:
Approximately 10 control subjects who are matched for age, gender, are expected to be enrolled in the study. Non-CF subjects must be >12 years old, in good health and not taking any medications or have any medical problems the doctor feels would prevent the subject from completing the study and have BMI between 15-85% for age and gender. Control subjects whose fasting blood glucose is found to be >110 mg/dL will not be continued in the study.
Studienplan
Dieser Abschnitt enthält Einzelheiten zum Studienplan, einschließlich des Studiendesigns und der Messung der Studieninhalte.
Wie ist die Studie aufgebaut?
Designdetails
- Hauptzweck: Grundlegende Wissenschaft
- Zuteilung: Nicht randomisiert
- Interventionsmodell: Parallele Zuordnung
- Maskierung: Keine (Offenes Etikett)
Waffen und Interventionen
Teilnehmergruppe / Arm |
Intervention / Behandlung |
|---|---|
|
Experimental: CF with Normal Glucose Tolerance
Individuals with CF without cystic fibrosis related diabetes
|
Subjects will be instructed to fast after midnight the night prior to the study.
Subjects will be admitted to the research unit on the morning of the test for placement of blood-drawing IV for frequent sampling.
Patients will drink 1.75 gm/kg glucose (Glucola) to a maximum of 75 gm.
Venous samples for glucose and c-peptide will be drawn from the IV at 0, 30, 60, 90 and 120 minutes.
Subjects will be instructed to eat at least 75 gm carbohydrates daily in the week prior to this test.
Subjects will be instructed to fast after midnight the night prior to the study.
Subjects will be admitted to the research unit on the morning of the test for placement of blood-drawing IV for frequent sampling.
Subjects will consume 6 kcal/kg (6 ml/kg) Boost High Protein Nutritional Energy Drink (Mead-Johnson) over five minutes to a maximum of 360 ml.
Venous samples for glucose, glucagon, GLP-1, GIP, and c-peptide will be drawn at -10, 0, 15, 30, 60, 90, 120, 150, 180, 210, and 240 minutes.
All subjects with CF and adult (but not pediatric) controls will undergo one-step hypoglycemic clamp.
Subjects will be instructed to fast after midnight the night prior to the study.
Subjects will be admitted to the research unit on the morning of the test for placement of blood-drawing IV for frequent sampling and a second IV for infusion of insulin and dextrose.
|
|
Experimental: Cystic Fibrosis Related Diabetes
Individuals with cystic fibrosis and cystic fibrosis related diabetes
|
Subjects will be instructed to fast after midnight the night prior to the study.
Subjects will be admitted to the research unit on the morning of the test for placement of blood-drawing IV for frequent sampling.
Patients will drink 1.75 gm/kg glucose (Glucola) to a maximum of 75 gm.
Venous samples for glucose and c-peptide will be drawn from the IV at 0, 30, 60, 90 and 120 minutes.
Subjects will be instructed to eat at least 75 gm carbohydrates daily in the week prior to this test.
Subjects will be instructed to fast after midnight the night prior to the study.
Subjects will be admitted to the research unit on the morning of the test for placement of blood-drawing IV for frequent sampling.
Subjects will consume 6 kcal/kg (6 ml/kg) Boost High Protein Nutritional Energy Drink (Mead-Johnson) over five minutes to a maximum of 360 ml.
Venous samples for glucose, glucagon, GLP-1, GIP, and c-peptide will be drawn at -10, 0, 15, 30, 60, 90, 120, 150, 180, 210, and 240 minutes.
All subjects with CF and adult (but not pediatric) controls will undergo one-step hypoglycemic clamp.
Subjects will be instructed to fast after midnight the night prior to the study.
Subjects will be admitted to the research unit on the morning of the test for placement of blood-drawing IV for frequent sampling and a second IV for infusion of insulin and dextrose.
|
|
Aktiver Komparator: Control
Age matched control subjects
|
Subjects will be instructed to fast after midnight the night prior to the study.
Subjects will be admitted to the research unit on the morning of the test for placement of blood-drawing IV for frequent sampling.
Patients will drink 1.75 gm/kg glucose (Glucola) to a maximum of 75 gm.
Venous samples for glucose and c-peptide will be drawn from the IV at 0, 30, 60, 90 and 120 minutes.
Subjects will be instructed to eat at least 75 gm carbohydrates daily in the week prior to this test.
Subjects will be instructed to fast after midnight the night prior to the study.
Subjects will be admitted to the research unit on the morning of the test for placement of blood-drawing IV for frequent sampling.
Subjects will consume 6 kcal/kg (6 ml/kg) Boost High Protein Nutritional Energy Drink (Mead-Johnson) over five minutes to a maximum of 360 ml.
Venous samples for glucose, glucagon, GLP-1, GIP, and c-peptide will be drawn at -10, 0, 15, 30, 60, 90, 120, 150, 180, 210, and 240 minutes.
All subjects with CF and adult (but not pediatric) controls will undergo one-step hypoglycemic clamp.
Subjects will be instructed to fast after midnight the night prior to the study.
Subjects will be admitted to the research unit on the morning of the test for placement of blood-drawing IV for frequent sampling and a second IV for infusion of insulin and dextrose.
|
Was misst die Studie?
Primäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
|
Glucagon levels
Zeitfenster: baseline
|
Glucagon levels in response to to a mixed meal stimulus
|
baseline
|
Sekundäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
|
C-peptide levels
Zeitfenster: baseline
|
C-peptide levels during oral glucose tolerance test and mixed meal tolerance test
|
baseline
|
|
C-peptide levels
Zeitfenster: 12 months
|
C-peptide levels during oral glucose tolerance test and mixed meal tolerance test
|
12 months
|
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Epinephrine levels
Zeitfenster: baseline
|
Epinephrine and norepinephrine levels during hypoglycemic clamp
|
baseline
|
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Epinephrine levels
Zeitfenster: 12 months
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Epinephrine and norepinephrine levels during hypoglycemic clamp
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12 months
|
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Norepinephrine levels
Zeitfenster: baseline
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norepinephrine levels during hypoglycemic clamp
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baseline
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Norepinephrine levels
Zeitfenster: 12 months
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norepinephrine levels during hypoglycemic clamp
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12 months
|
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Hypoglycemia unawareness scores
Zeitfenster: Baseline
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Hypoglycemia unawareness scores in subjects during hypoglycemic clamps as measured by the Clarke Hypoglycemia Awareness survey
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Baseline
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Hypoglycemia unawareness scores
Zeitfenster: 12 months
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Hypoglycemia unawareness scores in subjects during hypoglycemic clamps as measured by the Clarke Hypoglycemia Awareness survey
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12 months
|
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GLP-1 and GIP levels
Zeitfenster: Baseline
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GLP-1 and GIP levels in response to mixed meal stimulus
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Baseline
|
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GLP-1 and GIP levels
Zeitfenster: 12 months
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GLP-1 and GIP levels in response to mixed meal stimulus
|
12 months
|
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Glucagon levels
Zeitfenster: 12 months
|
Glucagon levels in response to to a mixed meal stimulus and difference from baseline
|
12 months
|
Mitarbeiter und Ermittler
Hier finden Sie Personen und Organisationen, die an dieser Studie beteiligt sind.
Sponsor
Ermittler
- Hauptermittler: Bracha Goldsweig, MD, Yale University
Studienaufzeichnungsdaten
Diese Daten verfolgen den Fortschritt der Übermittlung von Studienaufzeichnungen und zusammenfassenden Ergebnissen an ClinicalTrials.gov. Studienaufzeichnungen und gemeldete Ergebnisse werden von der National Library of Medicine (NLM) überprüft, um sicherzustellen, dass sie bestimmten Qualitätskontrollstandards entsprechen, bevor sie auf der öffentlichen Website veröffentlicht werden.
Haupttermine studieren
Studienbeginn
1. März 2015
Primärer Abschluss (Tatsächlich)
22. Juni 2017
Studienabschluss (Tatsächlich)
22. Juni 2017
Studienanmeldedaten
Zuerst eingereicht
22. Januar 2015
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
19. März 2015
Zuerst gepostet (Schätzen)
25. März 2015
Studienaufzeichnungsaktualisierungen
Letztes Update gepostet (Tatsächlich)
26. Juni 2020
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
24. Juni 2020
Zuletzt verifiziert
1. Juni 2020
Mehr Informationen
Begriffe im Zusammenhang mit dieser Studie
Zusätzliche relevante MeSH-Bedingungen
- Erkrankungen des Verdauungssystems
- Pathologische Prozesse
- Störungen des Glukosestoffwechsels
- Stoffwechselerkrankungen
- Erkrankungen der Atemwege
- Lungenkrankheit
- Erkrankungen des endokrinen Systems
- Säugling, Neugeborenes, Krankheiten
- Genetische Krankheiten, angeboren
- Erkrankungen der Bauchspeicheldrüse
- Fibrose
- Diabetes Mellitus
- Mukoviszidose
- Physiologische Wirkungen von Arzneimitteln
- Hypoglykämische Mittel
Andere Studien-ID-Nummern
- 1409014580
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