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Assessment of Insulin Sensitivity and β Cell Function by Clamps Studies

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT02662400
Recruitment Status : Completed
First Posted : January 25, 2016
Last Update Posted : January 18, 2017
Information provided by (Responsible Party):
Anil Bhansali, Postgraduate Institute of Medical Education and Research

Brief Summary:
India is the "Diabetes Capital of the World" with 41 million Indians having diabetes i.e. every fifth diabetic in the world is an Indian. Type 2 Diabetes Mellitus (T2DM) constitutes the major chunk of diabetes and has insulin resistance as the hallmark feature in the pathogenesis. However, with the progression of the disease the insulin resistance becomes stable whereas β - cell function shows a gradual decline due to its ongoing apoptosis. This ultimately leads to inability of the β - cells to cope up with the increased demand of insulin caused due to insulin resistance and manifests as hyperglycemia. As β - cell failure is progressive and inexorable, as demonstrated in United Kingdom Prospective Diabetes Study, most of the patients with T2DM would eventually require insulin and it would be difficult to achieve to attain a strict glycemic control . It is well known that diabetes related complications which account for morbidity and mortality in this disease can be prevented or delayed by strict glycemic control. However, even with intensive insulin therapy it has been shown that glycemic control can never be perfect with patients exhibiting hyperglycemia or hypoglycemia during 24 hour glucose profile. Also insulin therapy is not physiological as there is no hepatic "first - pass" metabolism of insulin which is required for halting the hepatic glucose output, which is responsible for fasting hyperglycemia. This led the researchers to evolve various strategies of β - cell replacement therapy e.g. pancreatic transplantation and islet cell transplantation. Initially the results of islet cell transplantation were dismal but after the induction of glucocorticoid free immunosuppressive therapy and the use of adequate number of islet cells from multiple donors, the results of islet cell transplantation have been better. However, islet cell transplantation has its own limitations viz insufficient supply, being technically demanding and requirement of lifelong immunosuppressive therapy in the recipient.

Condition or disease Intervention/treatment Phase
Diabetes Mellitus, Non-Insulin-Dependent Biological: MNCs Phase 2 Phase 3

Detailed Description:

The shortcomings can be overcome by the use of stem cells which is an inexhaustible source of β -cells. Stem cells are primitive cells capable of differentiating into mature cells of the body of various lineages. Stem cells can be obtained from various sources like blastocyst (embryonal stem cells), umbilical cord or bone marrow. There is an evidence to suggest that stem cell transplantation can lead to improvement in pancreatic endocrine function and improvement in glycemic control in diabetic mice through various mechanisms such as transdifferentiation or regeneration of endothelial cell in the damaged islets which in turn lead to regeneration of islet cells by paracrine action. However, till date there is no study that demonstrates that stem cell therapy can be effective in patients with T2DM for their glycemic control.

The investigators propose to carry out autologous bone marrow - derived stem cell transplantation (ABMSCT) in patients of T2DM, obtained from their own bone marrow and its superselective injection into the gastroduodenal artery after purification without any immunosuppressive regimen.

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 7 participants
Allocation: N/A
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Assessment of Insulin Sensitivity and β Cell Function by Clamps Studies After Stem Cell Transplantation in T2DM
Study Start Date : January 2016
Actual Primary Completion Date : October 2016
Actual Study Completion Date : December 2016

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Allergy

Arm Intervention/treatment
Experimental: MNCs GROUP
Patients with Type 2 Diabetes mellitus
Biological: MNCs
200 - 300 ml of bone marrow will be aspirated and layered on density gradient medium (Ficoll - hypaque ) and stem cells will be separated. Separated mono nucleated cells will injected into superior pancreatico duodenal artery. Patients will be urged to monitor and document blood glucose readings for next 6 months. Glucagon stimulated C - peptide HYPERGLYCEMIC CLAMP FOR ASSESSMENT OF BETA CELL FUNCTION , AND EUGLYCEMIC CLAMP TO ASSESS INSULIN SENSITIVITY .Homeostasis Model of Assessment - Insulin Resistance and Beta cell function ,HbA1c, lipid profile and biochemistry will be done at baseline and 6 months

Primary Outcome Measures :
  1. Improvement in insulin sensitivity after stem cell transplantation [ Time Frame: 6 months ]
    Stem cells will be transplanted in patients with T2DM. Pre and Pro stem cell transplantation Insulin sensitivity(pmol/l) will be assessed by euglycemic clamp .

Secondary Outcome Measures :
  1. Improvement in β cell function after stem cell transplantation [ Time Frame: 6 months ]
    Stem cells will be transplanted in patients with T2DM. Pre and Pro stem cell transplantation β cell function(nmol/L) will be assessed by hyperglycemia clamp .

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Ages Eligible for Study:   30 Years to 65 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Failure to triple oral hypoglycemic agent and on stable doses of insulin for at least 3 months.
  • On vildagliptin,pioglitazone and metformin for at least 3 months along with Insulin to maintain euglycemia.
  • HbA1c < 7.5%.
  • Insulin requirement ≥0.4 IU/kg/d.
  • GAD antibody negative status.

Exclusion Criteria:

  • Patients with type 1 diabetes mellitus or secondary diabetes.
  • Patients with serum creatinine > 1.5 mg/dl.
  • Abnormal liver function tests (defined as value of transaminases > 3 times the upper value of normal or serum bilirubin higher than normal for the reference value for the laboratory).
  • History of cholecystitis/ cholelithiasis/cholecystectomy.
  • Seropositivity for HIV, HBsAg and hepatitis C virus (HCV).
  • History of myocardial infarction or unstable angina in the previous 3 months.
  • History of malignancy.
  • Patients with active infections.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT02662400

Sponsors and Collaborators
Postgraduate Institute of Medical Education and Research
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Principal Investigator: anil Bhansali, DM Postgraduate Institute of Medical Education and Research
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Responsible Party: Anil Bhansali, Profeesor, Postgraduate Institute of Medical Education and Research Identifier: NCT02662400    
Other Study ID Numbers: MNCs IN Diabetes
First Posted: January 25, 2016    Key Record Dates
Last Update Posted: January 18, 2017
Last Verified: January 2017
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: No
Additional relevant MeSH terms:
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Insulin Resistance
Diabetes Mellitus, Type 2
Glucose Metabolism Disorders
Metabolic Diseases
Diabetes Mellitus
Endocrine System Diseases