- ICH GCP
- Rejestr badań klinicznych w USA
- Badanie kliniczne NCT01930097
Closed-loop Control of Glucose Levels After Meal Intake in Adults With Type 1 Diabetes
An Open-label, Randomized, Three-way, Cross-over Study to Compare the Efficacy of Closed-loop Operation Combined With Meal-and-carbohydrate-announcement Closed-loop Operation Combined With Meal-announcement, and Conventional Pump Therapy in Regulating Glucose Levels in Adults With Type 1 Diabetes
Closed-loop strategy is composed of three components: glucose sensor to read glucose levels, insulin pump to infuse insulin and a dosing mathematical algorithm to decide on the required insulin dosage based on the sensor's readings. A dual-hormone closed-loop system would regulate glucose levels through the infusion of two hormones: insulin and glucagon.
The objective of this project is to assess whether a dual-hormone closed-loop strategy would alleviate the burden of carbohydrate counting from patients with type 1 diabetes (T1D) without a significant degradation in post-meal glucose control.
Our primary hypothesis is that meal-announcement strategy (pre-meal CHO-independent bolus) is equivalent to meal-and-carbohydrate-announcement strategy (full CHO-matching bolus) during closed-loop regulation of glucose levels in adults with T1D. Our secondary hypothesis is that closed-loop strategy with meal-announcement strategy (pre-meal CHO-independent bolus) or meal-and-carbohydrate-announcement strategy (full CHO-matching bolus) is better than conventional pump treatment in regulation of glucose levels in adults with T1D.
Przegląd badań
Szczegółowy opis
Closed-loop strategy is composed of three components: glucose sensor to read glucose levels, insulin pump to infuse insulin and a dosing mathematical algorithm to decide on the required insulin dosages based on the sensor's readings. A dual-hormone closed-loop system would regulate glucose levels through the infusion of two hormone: insulin and glucagon.
Each patient will be admitted three times to a clinical research facility. In the meal-and-carbohydrate-announcement visit, patients will eat 3 meals accompanied with a matching insulin bolus (depending on the carbohydrate content of the meal) and glucose levels will be subsequently regulated using dual-hormone closed-loop system. In the meal-announcement visit, patients will eat the 3 same meals but will inject only a partial insulin bolus (not depending on carbohydrate content of the meal) and the remaining needed insulin will be delivered based on glucose sensor excursions as part of closed-loop operation. In the control visit, patients will use conventional pump therapy to regulate glucose levels.
Typ studiów
Zapisy (Rzeczywisty)
Faza
- Faza 2
Kontakty i lokalizacje
Lokalizacje studiów
-
-
Quebec
-
Montreal, Quebec, Kanada, H2W1R7
- Institut de recherches cliniques de Montreal
-
-
Kryteria uczestnictwa
Kryteria kwalifikacji
Wiek uprawniający do nauki
Akceptuje zdrowych ochotników
Płeć kwalifikująca się do nauki
Opis
Inclusion Criteria:
- Males and females ≥ 18 years of old.
- Clinical diagnosis of type 1 diabetes for at least one year.
- The subject will have been on insulin pump therapy for at least 3 months.
- Last (less than 3 months) HbA1c ≤ 12%.
Exclusion Criteria:
- Clinically significant microvascular complications: nephropathy (estimated glomerular filtration rate below 40 ml/min), neuropathy (especially diagnosed gastroparesis) or severe proliferative retinopathy as judged by the investigator.
- Recent (< 3 months) acute macrovascular event e.g. acute coronary syndrome or cardiac surgery.
- Ongoing pregnancy.
- Severe hypoglycemic episode within two weeks of screening.
- Medication likely to affect with the interpretation of the results because of their well known impact on gastric emptying: Motilium®, Prandase®, Victoza®, Byetta® and Symlin®.
- Known or suspected allergy to the trial products, meal contents including nuts, peanuts, dairy products or eggs.
- Unusual nutritional habits (e.g. vegetarians)
- Other serious medical illness likely to interfere with study participation or with the ability to complete the trial by the judgment of the investigator.
- Failure to comply with team's recommendations (e.g. not willing to eat snack, not willing to change pump parameters, etc).
- Unreliable carbohydrate counting or lack of insulin to carbohydrate ratios
- Problems with venous access
Plan studiów
Jak projektuje się badanie?
Szczegóły projektu
- Główny cel: Leczenie
- Przydział: Randomizowane
- Model interwencyjny: Zadanie krzyżowe
- Maskowanie: Brak (otwarta etykieta)
Broń i interwencje
Grupa uczestników / Arm |
Interwencja / Leczenie |
|---|---|
|
Aktywny komparator: CHO-dependant bolus
An insulin bolus dependant of carbohydrate content will be given after each meal. Each subject insulin-to-carbohydrate ratio (U per 10g CHO) will be used to calculate the insulin bolus to be given. The dual-hormone closed-loop strategy will give the remaining insulin needed based on the sensor readings. |
Subjects will be admitted at the IRCM at 6:30.
Subjects will be asked to fast from midnight.
At 8:00, a standardized (50g CHO for males; 30g CHO for females) meal will be served.
At 12:00, a standardized (120g CHO for males; 90g CHO for females) meal will be served.
At 17:00, a standardized (70g CHO for males; 50g CHO for females) meal will be served.
Between meals, patients will be allowed to do sedentary activities (reading, watching television, and playing video games, etc).
|
|
Aktywny komparator: CHO-independent bolus
An insulin bolus independent of carbohydrate content will be given after each meal.
The dual-hormone closed-loop strategy will give the remaining insulin needed based on the sensor readings.
|
Subjects will be admitted at the IRCM at 6:30.
Subjects will be asked to fast from midnight.
At 8:00, a standardized (50g CHO for males; 30g CHO for females) meal will be served.
At 12:00, a standardized (120g CHO for males; 90g CHO for females) meal will be served.
At 17:00, a standardized (70g CHO for males; 50g CHO for females) meal will be served.
Between meals, patients will be allowed to do sedentary activities (reading, watching television, and playing video games, etc).
|
|
Aktywny komparator: Conventional treatment
Patients will use conventional pump therapy to regulate glucose levels
|
Subjects will be admitted at the IRCM at 6:30.
Subjects will be asked to fast from midnight.
At 8:00, a standardized (50g CHO for males; 30g CHO for females) meal will be served.
At 12:00, a standardized (120g CHO for males; 90g CHO for females) meal will be served.
At 17:00, a standardized (70g CHO for males; 50g CHO for females) meal will be served.
Between meals, patients will be allowed to do sedentary activities (reading, watching television, and playing video games, etc).
|
Co mierzy badanie?
Podstawowe miary wyniku
Miara wyniku |
Opis środka |
Ramy czasowe |
|---|---|---|
|
The positive incremental area under the curve of postprandial glucose excursions
Ramy czasowe: 4 hours after meal intake
|
The positive incremental area under the curve (IAUC, as compared to pre-meal glucose value) of the 4-hr postprandial glucose excursions for the breakfast, lunch and dinner meals.
|
4 hours after meal intake
|
Miary wyników drugorzędnych
Miara wyniku |
Ramy czasowe |
|---|---|
|
Mean plasma glucose
Ramy czasowe: 8h00 to 21h00
|
8h00 to 21h00
|
|
Incremental two hours postprandial glucose
Ramy czasowe: 2 hours after meal intake
|
2 hours after meal intake
|
|
Incremental postprandial peak-glucose values
Ramy czasowe: 8h00 to 21h00
|
8h00 to 21h00
|
|
Percentage of time of plasma glucose levels between 4.0 and 10.0 mmol/L
Ramy czasowe: 8h00 to 21h00
|
8h00 to 21h00
|
|
Percentage of time of plasma glucose levels spent above 10.0 mmol/L
Ramy czasowe: 8h00 to 21h00
|
8h00 to 21h00
|
|
Percentage of time of plasma glucose levels spent below 4.0 mmol/L
Ramy czasowe: 8h00 to 21h00
|
8h00 to 21h00
|
|
Total insulin delivery
Ramy czasowe: 8h00 to 21h00
|
8h00 to 21h00
|
|
Total glucagon delivery
Ramy czasowe: 8h00 to 21h00
|
8h00 to 21h00
|
|
Standard deviation of glucose levels
Ramy czasowe: 8h00 to 21h00
|
8h00 to 21h00
|
|
Percentage of time of plasma glucose concentrations below 3.5 mmol/L
Ramy czasowe: 8h00 to 21h00
|
8h00 to 21h00
|
|
Percentage of time of plasma glucose concentrations above 14 mmol/L
Ramy czasowe: 8h00 to 21h00
|
8h00 to 21h00
|
|
Mean plasma insulin concentration
Ramy czasowe: 8h00 to 21h00
|
8h00 to 21h00
|
|
Mean plasma glucagon concentration
Ramy czasowe: 8h00 to 21h00
|
8h00 to 21h00
|
|
Number of patients experiencing hypoglycemia requiring oral treatment
Ramy czasowe: 8h00 to 21h00
|
8h00 to 21h00
|
|
Incremental area under the curve of the 4-hr postprandial glucose excursions but the reference glucose is set to 5.0 mmol/L if premeal glucose is less than 5.0 mmol/L.
Ramy czasowe: 4 hours after meal intake
|
4 hours after meal intake
|
Współpracownicy i badacze
Współpracownicy
Publikacje i pomocne linki
Daty zapisu na studia
Główne daty studiów
Rozpoczęcie studiów
Zakończenie podstawowe (Rzeczywisty)
Ukończenie studiów (Rzeczywisty)
Daty rejestracji na studia
Pierwszy przesłany
Pierwszy przesłany, który spełnia kryteria kontroli jakości
Pierwszy wysłany (Oszacować)
Aktualizacje rekordów badań
Ostatnia wysłana aktualizacja (Oszacować)
Ostatnia przesłana aktualizacja, która spełniała kryteria kontroli jakości
Ostatnia weryfikacja
Więcej informacji
Terminy związane z tym badaniem
Słowa kluczowe
Dodatkowe istotne warunki MeSH
Inne numery identyfikacyjne badania
- CLASS-05
Te informacje zostały pobrane bezpośrednio ze strony internetowej clinicaltrials.gov bez żadnych zmian. Jeśli chcesz zmienić, usunąć lub zaktualizować dane swojego badania, skontaktuj się z register@clinicaltrials.gov. Gdy tylko zmiana zostanie wprowadzona na stronie clinicaltrials.gov, zostanie ona automatycznie zaktualizowana również na naszej stronie internetowej .
Badania kliniczne na Cukrzyca typu 1
-
Assiut UniversityJeszcze nie rekrutacjaDiabtes Mellitus Type 1
-
University of BernDexCom, Inc.; DCB Research AG; mylife Diabetes Care AGRekrutacyjny
-
Leiden University Medical CenterZakończonyGruczolak przysadki | Guz przysadki | Diabetes Insipidus Cranial Type | Dokrewny; NiedobórHolandia
-
National Center for Research Resources (NCRR)Northwestern UniversityZakończonyMoczówka prosta | Diabetes Insipidus, NeurohypophysealStany Zjednoczone
-
Chia Tai Tianqing Pharmaceutical Group Nanjing...RekrutacyjnyRas/Braf Wild Type Rak jelita grubegoChiny
-
Children's Hospital of Fudan UniversityRekrutacyjnyKopeptyna | Diabetes Insipidus, Neurohypophyseal | Interwencja neurochirurgiczna | Poziomy kopeptyny we krwiChiny
-
University Hospital, Basel, SwitzerlandRekrutacyjnyTechnologia Sonic AfitmmentationSzwajcaria
-
Ferring PharmaceuticalsZakończonyCentralna moczówka prostaJaponia
-
University Hospital, Basel, SwitzerlandRekrutacyjnyMoczówka prosta | Niedobór AVPSzwajcaria
-
Universitair Ziekenhuis BrusselZakończonyNefrogenna moczówka prostaBelgia
Badania kliniczne na 14 hours intervention
-
Oregon Health and Science UniversityNational Institute of Mental Health (NIMH); University of Connecticut; University... i inni współpracownicyJeszcze nie rekrutacja
-
University of MinnesotaRekrutacyjnyCukrzyca typu 2Stany Zjednoczone
-
Icahn School of Medicine at Mount SinaiNational Institute on Aging (NIA)ZakończonyChoroba Alzheimera | Łagodne upośledzenie funkcji poznawczychStany Zjednoczone
-
University of South CarolinaCenters for Disease Control and PreventionRekrutacyjnyArtretyzm | Zapalenie kości i stawów | Toczeń rumieniowaty układowy | Dna | Reumatoidalne zapalenie stawów (RZS) | Fibromialgia (FM)Stany Zjednoczone
-
Ege Miray TopcuZakończonyLęk | Opieka wspomagająca prowadzona przez pielęgniarkę | Interwencje pielęgniarskieTurcja (Türkiye)
-
UNC Lineberger Comprehensive Cancer CenterNational Cancer Institute (NCI); Virginia Commonwealth UniversityRekrutacyjnyOtyłość | Nowotwór | Aktywność fizyczna | Dieta | Przetrwanie rakaStany Zjednoczone
-
Zhengzhou UniversityZakończony
-
Johns Hopkins UniversityNational Institute on Minority Health and Health Disparities (NIMHD); American...Jeszcze nie rekrutacjaNadciśnienie | Nadciśnienie powikłane cukrzycą typu 2Stany Zjednoczone
-
Lahore University of Biological and Applied SciencesRekrutacyjnyTerapia Bobathem | Interwencja Dynamicznego RuchuPakistan
-
Sarah MorrowLawson Health Research InstituteZakończony