These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Effect of intensive insulin therapy on glycemic thresholds for counterregulatory hormone release.
    Author: Amiel SA, Sherwin RS, Simonson DC, Tamborlane WV.
    Journal: Diabetes; 1988 Jul; 37(7):901-7. PubMed ID: 3290007.
    Abstract:
    To evaluate the effect of strict glycemic control of insulin-dependent diabetes mellitus (IDDM) on the plasma glucose threshold initiating counterregulatory hormone responses to hypoglycemia, we used the glucose clamp technique to produce a standardized gradual glucose decline from 90 to 40 mg/dl in seven young IDDM patients before and after 2-6 mo of intensified insulin therapy. Before intensive therapy [hemoglobin A1 (HbA1) 9.6 +/- 1.1%], epinephrine responses were triggered at a higher plasma glucose level (67 +/- 4 mg/dl) than in normal control subjects (56 +/- 1 mg/dl, P less than .05), and clinical symptoms of hypoglycemia appeared at glucose levels of 50-60 mg/dl. After intensive therapy (HbA1 7.1 +/- 0.7%), the glucose threshold for epinephrine release consistently declined to values (46 +/- 2 mg/dl) below normal (P less than .01). Furthermore, epinephrine concentrations were markedly reduced at each hypoglycemic level, and a greater hypoglycemic stimulus was required to elicit symptoms. The glucose threshold stimulating release of growth hormone also significantly declined after intensive therapy. We conclude that strict glycemic control of IDDM lowers the plasma glucose level required to generate epinephrine release during hypoglycemia. This may diminish patient recognition of moderate hypoglycemia and increase the risk of severe hypoglycemia in intensively treated IDDM.
    [Abstract] [Full Text] [Related] [New Search]