Abstract
We have characterized the abnormalities of glucose metabolism associated with Friedreich's ataxia (FA) by studying plasma glucose, insulin, growth hormone (GH), and glucagon before and after an oral glucose tolerance test (OGTT), an IV glucose load, and an IV arginine load, in 21 patients and in controls. Twelve patients were normotolerant (NT) to glucose, five glucose-intolerant (IT), and four diabetic (DM). Insulin secretion of IT patients was increased and delayed during OGTT. Interestingly, the insulin release during arginine load was significantly decreased in NT and IT as well as in DM patients. The GH response to OGTT was altered in IT patients. Plasma glucagon after an arginine load was significantly higher in patients than in controls. The results indicate that FA is associated with insulin resistance, α-cell deficiency, and type I diabetes. These alterations might be genetically linked or metabolically related to the primary defect in FA. Their interplay or independent effects are responsible for abnormalities of glucose metabolism in FA.
- © 1988 by AAN Enterprises, Inc.
AAN Members
We have changed the login procedure to improve access between AAN.com and the Neurology journals. If you are experiencing issues, please log out of AAN.com and clear history and cookies. (For instructions by browser, please click the instruction pages below). After clearing, choose preferred Journal and select login for AAN Members. You will be redirected to a login page where you can log in with your AAN ID number and password. When you are returned to the Journal, your name should appear at the top right of the page.
AAN Non-Member Subscribers
Purchase access
Letters: Rapid online correspondence
REQUIREMENTS
If you are uploading a letter concerning an article:
You must have updated your disclosures within six months: http://submit.neurology.org
Your co-authors must send a completed Publishing Agreement Form to Neurology Staff (not necessary for the lead/corresponding author as the form below will suffice) before you upload your comment.
If you are responding to a comment that was written about an article you originally authored:
You (and co-authors) do not need to fill out forms or check disclosures as author forms are still valid
and apply to letter.
Submission specifications:
- Submissions must be < 200 words with < 5 references. Reference 1 must be the article on which you are commenting.
- Submissions should not have more than 5 authors. (Exception: original author replies can include all original authors of the article)
- Submit only on articles published within 6 months of issue date.
- Do not be redundant. Read any comments already posted on the article prior to submission.
- Submitted comments are subject to editing and editor review prior to posting.