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Efficacy of Diazoxide in Type 1 Diabetes
This study is ongoing, but not recruiting participants.
Sponsored by: Grill, Valdemar, M.D.
Information provided by: Grill, Valdemar, M.D.
ClinicalTrials.gov Identifier: NCT00131755
  Purpose

The purpose of this study is to find out if Diazoxide can partly retain insulin production in newly diagnosed type 1 diabetes patients.


Condition Intervention Phase
Diabetes Mellitus, Type 1
Drug: diazoxide
Phase IV

MedlinePlus related topics: Diabetes Diabetes Type 1
Drug Information available for: Insulin Diazoxide
U.S. FDA Resources
Study Type: Interventional
Study Design: Treatment, Randomized, Double-Blind, Placebo Control, Parallel Assignment, Efficacy Study
Official Title: Efficacy of 6 Months Treatment With Diazoxide at Bedtime in Preventing Beta-Cell Demise in Newly Diagnosed Type 1 Diabetes

Further study details as provided by Grill, Valdemar, M.D.:

Primary Outcome Measures:
  • Insulin secretion (measured by fasting and stimulated c-peptide)
  • Glycemic control (measured by blood glucose)

Secondary Outcome Measures:
  • Autoimmune activity (measured by islet antibodies)
  • Side effects

Estimated Enrollment: 35
Study Start Date: February 2005
Estimated Study Completion Date: June 2008
Detailed Description:

At the time of diagnosis most subjects with type 1 diabetes retain significant endogenous insulin secretion as assessed by C-peptide measurements. Although not sufficient for the needs of the individual, residual insulin secretion is important for metabolic control, for avoidance of hypoglycemic episodes and, perhaps, for protection against diabetic complications. To retain residual endogenous insulin secretion in type 1 diabetes is thus highly desirable.

Residual insulin secretion deteriorates during the course of type 1 diabetes. The underlying autoimmune process is a major determinant of deterioration.

However, also measures that do not directly target the immune system could be beneficial. The DCCT study randomised subjects with type 1 diabetes to either intensive or conventional insulin treatment. The intensive insulin treatment markedly retarded deterioration in C-peptide levels during 5 years of observation. The favourable effect could be due to lesser hyperglycemia per se. Alternatively, the effect of intensive insulin treatment could be secondary to lesser degree of over-stimulation of the patients' beta-cells.

It is by now established that relief from over-stimulation by diazoxide favourably affects beta-cell function and that such treatment can retard a decline in residual insulin secretion in subjects with newly diagnosed type 1 diabetes. Diazoxide has been used in clinical practice for > three decades without major safety concerns.

Disturbing, albeit reversible, side effects are halting long-term studies with diazoxide in type 1 diabetes. The researchers find that lower and intermittent (i.e. night time) dosing of diazoxide produces no measurable side effects in subjects with type 2 diabetes.

This is a double blinded placebo controlled study, with 35 participants with newly diagnosed type 1 diabetes are randomised into either placebo or Diazoxide for 6 months. The patients will be followed up after intervention for at least 12 months.

Beta cell function and glycemic control will be monitored.

  Eligibility

Ages Eligible for Study:   18 Years to 40 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • Type 1 diabetes no longer than three months
  • Positive antibodies against GAD or IA2
  • Age between 18-40 years
  • C-peptide >0.2 nmol/l

Exclusion Criteria:

  • Drug or alcohol abuse
  • Severe concomitant disease
  • Pregnancy
  Contacts and Locations
Please refer to this study by its ClinicalTrials.gov identifier: NCT00131755

Locations
Norway
University Hospital of Trondheim
Trondheim, Norway, 7006
Sponsors and Collaborators
Grill, Valdemar, M.D.
Investigators
Principal Investigator: Grill Valdemar, MD PhD Norwegian University of Science and Technology
  More Information

Study ID Numbers: DIAZ 1, Eudract 2004-004103-38
Study First Received: August 17, 2005
Last Updated: September 26, 2007
ClinicalTrials.gov Identifier: NCT00131755  
Health Authority: Norway: Norwegian Social Science Data Services

Keywords provided by Grill, Valdemar, M.D.:
type 1 diabetes
beta cell rest
diazoxide
insulin secretion

Study placed in the following topic categories:
Autoimmune Diseases
Metabolic Diseases
Diabetes Mellitus, Type 1
Diazoxide
Diabetes Mellitus
Endocrine System Diseases
Endocrinopathy
Metabolic disorder
Glucose Metabolism Disorders
Insulin

Additional relevant MeSH terms:
Vasodilator Agents
Immune System Diseases
Therapeutic Uses
Cardiovascular Agents
Antihypertensive Agents
Pharmacologic Actions

ClinicalTrials.gov processed this record on January 16, 2009