Effect of Pulsatile IV Insulin on Circulating Risk Markers of Vascular and Metabolic Complications in Pts With Diabetes

August 8, 2016 updated by: Florida Atlantic University

Effect of Pulsatile IV Insulin Delivery on Circulating Risk Markers of Vascular and Metabolic Complications in Pts With Diabetes

The purpose of this study is to determine the effect of Pulsatile Intravenous Insulin therapy on circulating blood markers. These blood markers are selected due to their correlation to and possible pathogenetic roles in vascular compromise and inflammatory malfunction in diabetic patients.

Study Overview

Status

Terminated

Conditions

Intervention / Treatment

Detailed Description

Insulin produces vasodilatory, anti inflammatory and anti thrombotic effects (1-4). . However the effects of pulsatile intravenous insulin delivery on circulating risk factors for vascular and metabolic disease is unknown. This study is used to evaluate circulating risk markers of vascular and metabolic disease compared to a matched control group.

Protocol Patients selected have diabetes mellitus, 20 years of age and older, and are treated with oral agents and/or insulin. The study is for a minimum of 12 months and may continue for 2-3 years if a significant difference is shown following the initial 12 months. Blood markers will be determined every 12 months for the first year, and every 12 months after that. They may include the following: BNP, fructosamine, PAI-1, fibrinogen, homocysteine, endothelin 1, aldosterone, VCAM, ICAM, IGF-1, TGF-beta, TNF-alpha, hs-CRP, and IL-6). The results are compared to an age and fructosamine matched control group.

Endpoints; Changes in markers Statistics: ANOVA Blood: 2 purple, 2 red, 2 blue tops

The respiratory quotient (RQ) is a measurement of CO2 exhaled and O2 inhaled and is proportionate to the fuel sources being used by the body, primarily the liver over short periods of time. The higher the RQ, the more glucose and less alternative fuel sources are being utilized. Following the RQ change helps determine the effectiveness of physiological insulin administration in increasing anabolic functions in diabetic individuals. By improving the body's glucose metabolism and thereby causing beneficial effects of anabolic factors, the possibility of serious complications can be decreased. In addition the use of oral carbohydrate at the same time along with the physiologic insulin administration stimulates the appropriate gut hormones which augment this effect, a response which cannot be duplicated with intravenous glucose. The purpose of our studies is to determine whether the physiologic administration of pulsatile intravenous insulin along with the augmenting effect of oral carbohydrates will normalize metabolism in diabetic patients and improve their quality of life indices.

The RQ is determined by the use of a metabolic cart. Individuals breathe into a mask for 3-5 minutes after a rest period of 30 or more minutes. The ratio of exhaled volume of CO2 to the inhaled volume of O2 is determined as the RQ. The physiologic range is 0.7 to1.3. Individuals using fat as a primary fuel have a ratio of 0.7, protein or mixed fuels is 0.8-0.9 and carbohydrate is 0.9-1.0. Those taking excessive calories will have RQ's higher than 1.05. The RQ can be followed serially and this is done twice, before and after each treatment, during the 3 successive sessions on a single treatment day. The amount of intravenous insulin and oral glucose given is determined by the RQ changes during the previous session.

Pusatile intravenous insulin delivery is a process which encourages the glucose metabolism in diabetics to normalize in multiple organs, especially muscle, retina, liver, kidney and nerve endings. The process fundamentally requires the administration of high dose intravenous insulin pulses similar to those found in non diabetic humans by their pancreas into the surrounding portal circulation. Oral carbohydrates are given simultaneously to augment the process and prevent hypoglycemia. The process is monitored by frequent glucose level measurements and respiratory quotients (RQ). RQ is measured by a metabolic cart which determines the ratio VCO2/ VO2. This ratio is specific for the fuel used at any one time by the body. The glucose levels are monitored to keep glucose levels appropriate and the RQ determines the need to readjust the infusion protocol in each patient for subsequent insulin infusion sessions. Pulsatile intravenous insulin delivery is done over 1-hour periods with a up to a 1-hour rest period between each session for three courses each day of activation.

References:

Katakam PVG, Tulbert CD, Snipes JA, Erdos B, Miller AW, Busija DW, Impaired Insulin-induced Vasodilation in Small Coronary Arteries of Zucker Obese rats is Mediated by Reactive Oxygen Species, AJP-Heart 288:854-60, 2005.

Chakraborty K Sinha AK, The Role of Insulin as an Antithrombotic Humoral Factor, BioEssays 26:91-98, 2003.

Elias AN, Eng S, Homocysteine Concentrations in Patients with Diabetes Mellitus-Relationship to Microvascular and Macrovascular Disease, Diabetes, Obesity and Metabolism 7:117-21, 2005.

Patiag D, Qu X, Gray S, Idris I, Wilkes M, Seale JP, Donnely R, Possible Interactions between Angiotensin II and Insulin:Effects on Glucose and Lipid Metabolism in vivi and in vitro, Journal of Endocrinology 167: 525-31, 2000

Study Type

Interventional

Enrollment (Actual)

105

Phase

  • Phase 2
  • Phase 3

Contacts and Locations

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

Study Locations

  • United States
    • Florida
      • Boca Raton, Florida, United States, 33431
        • Florida Atlantic University Center for Complex Systems and Brain Sciences

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

21 years to 85 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • We will include up to 500 patients both male and female over the age of 21 diagnosed with type 1 or type 2 diabetes mellitus
  • All patients must have secondary complications caused by the diabetes and not responding to conventional medical management
  • Under an Endocrinologists supervision for their diabetes management
  • Endocrinologist must assess and approve patient for participation in this study
  • Ability to swallow without difficulty
  • Ability to commit to the weekly time requirements associated with the study

Exclusion Criteria:

  • Other causes of complications not related to diabetes
  • Lack of intravenous access
  • Pregnancy
  • Alcohol abuse, drug addiction or the use of illegal drugs
  • Positive HIV
  • Inability to perform breathe into machine for respiratory quotients

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 Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Active Comparator: 2
Diabetic patients who meet inclusion criteria will be enrolled to start Pulsatile Intravenous Insulin Therapy on a weekly basis. Baseline testing will be performed and measured against continued testing every twelve months.
Procedure: Effect of Pulsatile IV insulin on diabetic pt blood markers
Diabetic patients are given pulsatile intravenous insulin on a weekly basis determined by weekly physician order based on pt response and insulin resistance.
Other Names:
  • Humulin, Humulog, Novolog, Epidra
Procedure: Effect of Pulsatile IV insulin on diabetic pt blood markers
Blood markers will be performed on diabetic patients enrolled as control patients at baseline and every twelve months to measure and compare against diabetic patients treated with Pulsatile intravenous insulin therapy
Placebo Comparator: 1
Circulating blood markers will be performed on diabetic control patients at baseline and every twelve months to compare and measure against patients treated with Pulsatile intravenous insulin therapy
Procedure: Effect of Pulsatile IV insulin on diabetic pt blood markers
Diabetic patients are given pulsatile intravenous insulin on a weekly basis determined by weekly physician order based on pt response and insulin resistance.
Other Names:
  • Humulin, Humulog, Novolog, Epidra
Procedure: Effect of Pulsatile IV insulin on diabetic pt blood markers
Blood markers will be performed on diabetic patients enrolled as control patients at baseline and every twelve months to measure and compare against diabetic patients treated with Pulsatile intravenous insulin therapy
Procedure: Effect of Pulsatile IV Insulin on blood markers
Circulating blood markers are performed at baseline and every twelve months to compare and measure against diabetic patients receiving pulsatile intravenous insulin.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Primary: Assessment of effect of Pulsatile Intravenous Insulin therapy on circulating blood markers for diabetic patients.
Time Frame: Circulating blood markers will be drawn at baseline and every twelve months to monitor and measure results
Circulating blood markers will be drawn at baseline and every twelve months to monitor and measure results

Collaborators and Investigators

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

Sponsor

Florida Atlantic University

Collaborators

Advanced Diabetes Treatment Centers

Investigators

  • Principal Investigator: Betty Tuller, Ph.D, Florida Atlantic University

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

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

February 1, 2005

Primary Completion (Actual)

August 1, 2009

Study Completion (Actual)

August 1, 2009

Study Registration Dates

First Submitted

April 13, 2006

First Submitted That Met QC Criteria

August 8, 2006

First Posted (Estimate)

August 9, 2006

Study Record Updates

Last Update Posted (Estimate)

August 9, 2016

Last Update Submitted That Met QC Criteria

August 8, 2016

Last Verified

August 1, 2016

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • H09-04
  • MH42900 and MH01386 (NIMH)

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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