Blood/Interstitial Glucose Measurements and Cognitive Function During Hypoglycemia and Recovery

May 4, 2017 updated by: Joslin Diabetes Center
The purpose of this study is to find out the effects of hypoglycemia on cognition in healthy individuals and how well changes in (interstitial) tissue glucose levels correlate with changes in cognitive function as compared to blood glucose levels.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

Subjects will undergo hypoglycemic clamps during which interstitial glucose will be measured and cognitive function will be assessed.

Study Type

Interventional

Enrollment (Actual)

20

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 Locations

  • United States
    • Massachusetts
      • Boston, Massachusetts, United States, 02215
        • Joslin Diabetes Center

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

18 years to 50 years (Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • non obese (BMI <30), ages 18-50

Exclusion Criteria:

  • renal or hepatic failure
  • cancer or lymphoma
  • malabsorption or malnourishment
  • hypercortisolism
  • alcoholism or drug abuse
  • anemia
  • eating disorder or depression
  • coronary artery disease
  • Arrhythmias
  • hypertension
  • on medications known to affect the blood glucose to be measured such as
  • glucocorticoids

  • on blood thinning agents

    • Pregnant women, breastfeeding women and women who want to become pregnant in the next 6 months will be excluded from the study.
    • Subjects who have donated blood two weeks prior to the study.
    • Allergies to pig derived products (Heparin will be used)

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: Diagnostic
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Euglycemic and hypoglycemic clamp
Subjects will complete clamp study visit.
Procedure: euglycemic and hypoglycemic clamp
Subjects will undergo standard euglycemic and hypoglycemic clamps, and will have concurrent assessments of cognitive function and measurement of interstitial glucose concentrations.
Other Names:
  • clamp

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
cognitive function correlation to blood or interstitial glucose
Time Frame: 1 year
This investigator initiated study will evaluate cognitive function at the onset, during and following recovery from hypoglycemia and will determine if cognitive function correlates better with blood or interstitial glucose concentrations.
1 year

Collaborators and Investigators

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

Sponsor

Joslin Diabetes Center

Collaborators

Abbott Diabetes Care

Investigators

  • Principal Investigator: Howard Wolpert, MD, Joslin Diabetes Center
  • Study Chair: Greeshma K Shetty, MD, Joslin Diabetes Center
  • Study Chair: Gail Musen, PhD, Joslin Diabetes Center
  • Study Chair: Gail Adler, MD, PhD, Brigham and Women's Hospital

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 (Actual)

January 1, 2011

Primary Completion (Actual)

October 1, 2014

Study Completion (Actual)

October 1, 2015

Study Registration Dates

First Submitted

January 24, 2011

First Submitted That Met QC Criteria

January 24, 2011

First Posted (Estimate)

January 25, 2011

Study Record Updates

Last Update Posted (Actual)

May 9, 2017

Last Update Submitted That Met QC Criteria

May 4, 2017

Last Verified

May 1, 2017

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • CHS #: 2010-09

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

No

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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