The Surgical Treatment of Type 2 Diabetes Mellitus in Non-Morbidly Obese Patients: A Community Hospital Study

April 12, 2011 updated by: McKenzie Health System
Type 2 diabetes mellitus is a chronic disease with severe long-term health consequences. In patients with type 2 diabetes mellitus who are also morbidly obese, an abundance of clinical evidence exists showing that significant clinical improvement in their diabetes occurs following certain types of bariatric, or weight loss, surgical procedures. There is additional data showing that bariatric surgical procedures that bypass the beginning of the small intestine, such as the Roux-en Y gastric bypass, can markedly improve type 2 diabetes even before significant weight loss has occurred. This early effect on type 2 diabetes prior to weight loss suggests that bypassing the beginning of the small intestine in patients who are not morbidly obese may also treat type 2 diabetes. There have been small studies outside the United States that support the concept of treating type 2 diabetes with a surgical procedure that bypasses the beginning of the small intestine without causing significant weight loss; however, data is limited in the United States and a call for comparative studies has been made internationally. The investigators propose to compare, in patients who are not morbidly obese, conventional medical treatment of type 2 diabetes to surgical treatment of type 2 diabetes using a bypass procedure that does not cause significant weight loss, the laparoscopic duodenal exclusion.

Study Overview

Status

Unknown

Conditions

Intervention / Treatment

Detailed Description

Diabetes is a disease of glucose metabolism which in the United States in 2007 was estimated to effect at least 17.5 million people with type 2 diabetes mellitus accounting for approximately 90% to 95%. Poorly-controlled or treated type 2 diabetes is associated with a variety of health risks, including heart disease, stroke, renal failure, amputations,and blindness and is the seventh leading cause of death in the United States (NDIC, National Diabetes Statistics, 2011). A large number of medical treatments are available yet approximately 67% of patients in the United States with type 2 diabetes are unable to reach levels of hemoglobin A1C less than 6.5%, which is the target level set by the American Association of Clinical Endocrinologists (AACE, State of Diabetes in America, 2011). In patients with type 2 diabetes mellitus who are also morbidly obese, certain bariatric surgical procedures have shown improvement in the control of type 2 diabetes in addition to the expected weight loss effects. However, clinical investigations have pointed to a mechanism other than just weight loss in the improvement of type 2 diabetes in these patients and raised the possibility of utilizing the same mechanism in non-morbidly obese patients. Subsequent basic science research in 2004 involving a surgical bypass procedure of the proximal intestine in non-obese mice with type 2 diabetes mellitus showed remission of diabetes in the majority of mice and marked improvement over medical treatment in the remaining mice (13). Human clinical trials have been conducted in various locations worldwide and have produced similar results to the animal study; a call has been made for studies of new surgical procedures for the treatment of type 2 diabetes in IRB-approved clinical trials (39). In several studies, the duodenal exclusion, which is a procedure which bypasses the duodenum and proximal jejunum and leaves the stomach intact, has been shown to cause remission or marked improvement in type 2 diabetes mellitus without significant weight loss in non-morbidly obese patients. However, no study within the United States has compared the effect of this surgical procedure upon type 2 diabetes with the effect of conventional medical treatment of type 2 diabetes in a controlled clinical trial. In this clinical study, the investigators propose to directly compare the treatment of type 2 diabetes mellitus in non-morbidly obese humans by a surgical bypass of the duodenum and proximal jejunum to the treatment of a similar group of humans treated with conventional medical therapy. Our hypothesis is that a non-bariatric surgical procedure, the laparoscopic duodenal exclusion, will provide improved treatment of type 2 diabetes mellitus in non-morbidly obese patients when compared to conventional medical treatment. The measures of the treatment of type 2 diabetes mellitus in which a difference is expected to be observed are glycosylated hemoglobin A1C (HbA1C), fasting glucose, and insulin resistance. The investigators propose a prospective, controlled, non-randomized clinical trial to test this hypothesis.

Study Type

Interventional

Enrollment (Anticipated)

66

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Locations

  • United States
    • Michigan
      • Sandusky, Michigan, United States, 48471
        • Recruiting
        • McKenzie Health System
        • Contact:
        • Contact:
          • Steve Barnett, M.S.
          • Phone Number: 810-648-3770

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

20 years to 65 years (ADULT, OLDER_ADULT)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • diagnosis of type 2 diabetes mellitus
  • fasting blood glucose > 126 mg/dl
  • on hypoglycemic medications for the treatment of type 2 diabetes
  • inadequate control of diabetes with glycosylated hemoglobin A1c > 7.5
  • body mass index between 20 and 35
  • C-peptide level 1.0 mg/dl or higher
  • ability to understand the proposed surgical treatment and its mechanism
  • ability to understand the risks and benefits of the proposed surgery
  • ability to commit to the study requirements for followup and education
  • ability to give properly informed consent for participation

Exclusion Criteria:

  • body mass index 35 or higher, or less than 20
  • previous diagnosis of type 1 diabetes mellitus or mixed diabetes
  • pregnancy, within one year postpartum, or currently breastfeeding
  • recent (within 1 year) gastric or duodenal ulcer
  • use of immunosuppressive medications or known immunosuppressive disorder
  • previous gastric, duodenal, or small intestinal surgery
  • inflammatory bowel disease
  • treatment with anticoagulant or antiplatelet medication other than aspirin 81 mg/day
  • end-stage renal disease or on dialysis
  • any other serious concomitant medical condition that, in the opinion of the investigator, would compromise the safety of the patient or compromise the patient's ability to participate in the study

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: TREATMENT
  • Allocation: NON_RANDOMIZED
  • Interventional Model: PARALLEL
  • Masking: NONE

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
ACTIVE_COMPARATOR: Medical Control Group
Control group of patients who will receive conventional medical treatment for type 2 diabetes, along with regular dietary and diabetic education, under the monitoring of the study endocrinologist.
Other: Conventional Medical Treatment
Standard of care medical treatment for type 2 diabetes to include medications and dietary management under the monitoring of the study endocrinologist.
Other Names:
  • control arm
EXPERIMENTAL: Surgical Treatment Group
Experimental group in which patients will undergo the laparoscopic duodenal bypass procedure along with regular dietary and diabetic education, under the monitoring of the study endocrinologist.
Procedure: Laparoscopic duodenal exclusion
Laparoscopically-performed Roux-en Y intestinal bypass of the duodenum and proximal jejunum; stomach remains normal size and proximal division performed just distal to pylorus.
Other Names:
  • duodenal exclusion
  • duodenal bypass

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Hemoglobin A1C
Time Frame: One year
The primary outcome is the difference in hemoglobin A1C between the surgical treatment arm and the conventional medical treatment arm.
One year

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

McKenzie Health System

Investigators

  • Principal Investigator: Marcus K. Free, M.D., McKenzie Health System
  • Study Director: Steve Barnett, M.S., McKenzie Health System

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

April 1, 2011

Primary Completion (ANTICIPATED)

May 1, 2014

Study Completion (ANTICIPATED)

May 1, 2014

Study Registration Dates

First Submitted

March 24, 2011

First Submitted That Met QC Criteria

March 24, 2011

First Posted (ESTIMATE)

March 25, 2011

Study Record Updates

Last Update Posted (ESTIMATE)

April 13, 2011

Last Update Submitted That Met QC Criteria

April 12, 2011

Last Verified

March 1, 2011

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • LDE-199979-1

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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