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Related Concept Videos

Hypoglycemia and Glucagon01:15

Hypoglycemia and Glucagon

Without prolonged fasting, healthy individuals maintain blood glucose levels above 3.5 mM due to a well-adapted neuroendocrine counterregulatory system that effectively prevents acute hypoglycemia, a potentially life-threatening condition. The primary clinical scenarios for hypoglycemia encompass diabetes treatment, inappropriate production of endogenous insulin or insulin-like substances by tumors, and the use of glucose-lowering agents in non-diabetic individuals. Notably, hypoglycemia in the...
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Adrenal gland disorders manifest when the production of adrenal hormones deviates from the norm, resulting in either excessive or insufficient concentrations.
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Incretins include glucagon-like peptide-1 (GLP-1) and glucose-dependent insulinotropic polypeptide (GIP), which stimulate insulin secretion post-meals. In type 2 diabetes, GIP's efficacy is reduced, making GLP-1 a viable drug target. GIP originates from preproGIP.
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Fecal Glucocorticoid Analysis: Non-invasive Adrenal Monitoring in Equids
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Assessing adrenal function in primary care settings with a single sample subcutaneous glucagon test.

Michael S Kappy1, Amanda Drake, Dexiang Gao

  • 1Children's Hospital, Denver, CO 80218, USA. kappy.michael@tchden.org

The Journal of Pediatrics
|November 11, 2006
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Summary

The low-dose glucagon test effectively assesses the hypothalamo-pituitary-adrenal (HPA) axis in children, showing high concordance with the ACTH test. This simple blood test offers a reliable alternative for evaluating adrenal gland function.

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Area of Science:

  • Pediatric Endocrinology
  • Endocrinology
  • Clinical Chemistry

Background:

  • The hypothalamo-pituitary-adrenal (HPA) axis is crucial for stress response and metabolic regulation.
  • Accurate assessment of HPA axis function is vital in pediatric endocrinology.
  • Current diagnostic methods may have limitations in accessibility or ease of use.

Purpose of the Study:

  • To evaluate the efficacy of a low-dose glucagon test for assessing HPA axis function in children.
  • To compare the diagnostic performance of the glucagon test with the established low-dose intravenous ACTH test.

Main Methods:

  • A subcutaneous glucagon stimulation test was administered to 215 healthy children.
  • The study established concordance with the low-dose intravenous ACTH test in 42 children.
  • Blood samples were collected at specific time points post-administration for cortisol level analysis.

Main Results:

  • Mean peak serum cortisol levels were comparable between the glucagon test (22.4 +/- 0.6 microg/dL) and the ACTH test (20.0 +/- 0.6 microg/dL).
  • The glucagon test demonstrated 95% specificity at a peak cortisol concentration of 9.5 microg/dL.
  • A high concordance rate of 90.5% was observed between the glucagon and ACTH tests.

Conclusions:

  • The low-dose glucagon test is a reliable and effective method for assessing HPA axis function in children.
  • The glucagon test exhibits high concordance (90.5%) with the standard ACTH stimulation test.
  • Its ease of administration, requiring a single blood sample 150 minutes post-injection, makes it suitable for primary care settings.