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  • Title: Growth hormone/insulin-like growth factor 1 axis recovery after liver transplantation: a preliminary prospective study.
    Author: Bassanello M, De Palo EF, Lancerin F, Vitale A, Gatti R, Montin U, Ciarleglio FA, Senzolo M, Burra P, Brolese A, Zanus G, D'Amico DF, Cillo U.
    Journal: Liver Transpl; 2004 May; 10(5):692-8. PubMed ID: 15108263.
    Abstract:
    Many studies on cirrhotic patients have shown that insulin-like growth factor 1 (IGF-1) plasma levels are related to the severity of liver dysfunction. This result suggests that IGF-1 is probably useful for monitoring liver function in the perioperative course of orthotopic liver transplantation (OLT). Growth hormone (GH), IGF-1 plasma levels, and routine liver function tests were measured in 15 adult cirrhotic patients undergoing OLT. Measurements were made at the beginning of the operation; during OLT; 24 hours after reperfusion; and in the morning on days 7, 30, and 90. Twenty age-matched healthy volunteers with normal liver function served as controls. The study group had significantly higher GH levels and lower IGF-1 levels in the preoperative period compared with the controls. All patients achieved a complete functional hepatic recovery 1 month after OLT, although in 6 of them, the graft had an initial poor function (Group-IPF). GH and IGF-1 levels achieved near normal range within 1 week after OLT, and they had no significant correlations with other routine biochemistry tests in this period. IGF-1 levels in Group-IPF rose more slowly than in the group with a normal recovery of graft function. Surprisingly, 24 hours after reperfusion, IGF-1 levels were higher in Group-IPF than in the group with normal graft function. In conclusion, the severe GH/IGF-1 axis impairment found in patients with end-stage cirrhosis reverted very rapidly in the first days after successful OLT. Such a quick, postoperative modulation of IGF-1 plasma level by the graft suggests that this hormone has the potential to become one of the early indicators of post-OLT liver function recovery.
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