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- A clinical syndrome resulting from excessive secretion of growth hormone (GH).
- GH excess prior to closure of the epiphyseal plates results in gigantism; after epiphyseal plate closure, the result is acromegaly.
- Somatic and metabolic effects of chronic GH hypersecretion are predominantly mediated by high levels of insulin-like growth factor-1 (IGF-1).
- Acromegaly is an uncommon secondary cause of diabetes.
- Excess GH: 1) stimulates gluconeogenesis and lipolysis, causing hyperglycemia and elevated free fatty acid levels; 2) leads to both hepatic and peripheral insulin resistance, with compensatory hyperinsulinemia. Conversely, IGF-1 increases insulin sensitivity. However, in acromegaly, increased IGF-1 levels are unable to overcome the insulin-resistant state caused by GH excess.
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Last updated: June 2, 2019
Ball, Douglas. "Acromegaly." Johns Hopkins Diabetes Guide, 2019. Johns Hopkins Guide, www.hopkinsguides.com/hopkins/view/Johns_Hopkins_Diabetes_Guide/547003/all/Acromegaly.
Ball D. Acromegaly. Johns Hopkins Diabetes Guide. 2019. https://www.hopkinsguides.com/hopkins/view/Johns_Hopkins_Diabetes_Guide/547003/all/Acromegaly. Accessed July 22, 2019.
Ball, D. (2019). Acromegaly. In Johns Hopkins Diabetes Guide. Available from https://www.hopkinsguides.com/hopkins/view/Johns_Hopkins_Diabetes_Guide/547003/all/Acromegaly
Ball D. Acromegaly [Internet]. In: Johns Hopkins Diabetes Guide. ; 2019. [cited 2019 July 22]. Available from: https://www.hopkinsguides.com/hopkins/view/Johns_Hopkins_Diabetes_Guide/547003/all/Acromegaly.
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