Role of endogenous glucocorticoid metabolism in human acute pancreatitis.
OBJECTIVE
This study aimed to observe how levels of total cortisol, calculated free cortisol, corticosteroid-binding globulin, and adrenocorticotropic hormone change during the early course of human acute pancreatitis and to describe how these changes affect the development of pancreatic necrosis.


METHODS
In a total of 109 consecutive patients with acute pancreatitis (74 with edematous pancreatitis, 35 with necrotizing pancreatitis), serial daily blood monitoring of total and free cortisol, adrenocorticotropic hormone, and corticosteroid-binding globulin was done after hospital admission, up to day 6 after the onset of pain; 30 healthy individuals served as controls.


METHODS
Corticosteroid-binding globulin and total cortisol were measured by immunoassays, and free cortisol was calculated according to Coolens et al. The adrenocorticotropic hormone was measured with an enzyme-linked immunoassay.


RESULTS
Initially, highly elevated levels of calculated free cortisol (median, 86.2 ng/mL; quartile ranges, 50.6-106.7 ng/mL) and total cortisol (41.2 microg/dL, 30.4-51.1 microg/dL) and depressed levels of adrenocorticotropic hormone (0.2 pg/mL, 0.1-2.0 pg/mL) and corticosteroid-binding globulin (30.6 microg/mL, 24.1-35.5 microg/mL) were observed. Further, daily measurements revealed increasing adrenocorticotropic hormone levels, whereas cortisol levels decreased.


CONCLUSIONS
Although an increase in adrenocorticotropic hormone levels is suggested to increase corresponding cortisol levels, cortisol levels decreased during the development of necrotizing acute pancreatitis. This phenomenon, along with the continuously decreasing corticosteroid-binding globulin levels, brings up the hypothesis of a relative adrenal insufficiency, which favors acinar cell apoptosis and hence may trigger the development of necrosis in the initial vulnerable phase of acute pancreatitis.
Department of General Surgery, St. Josef Hospital, Ruhr University, Bochum, Germany.
Christophe A
CA
Muller
Michael
M
Vogeser
Orlin
O
Belyaev
Beat
B
Gloor
Oliver
O
Strobel
Dirk
D
Weyhe
Jens
J
Werner
Anders
A
Borgstrom
Markus W
MW
Buchler
Waldemar
W
Uhl
D000208:Acute Disease; D000293:Adolescent; D000324:Adrenocorticotropic Hormone / Q000378:metabolism*; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002352:Carrier Proteins / Q000378:metabolism*; D003345:Corticosterone; D005260:Female; D006801:Humans; D006854:Hydrocortisone / Q000378:metabolism*; D008297:Male; D008875:Middle Aged; D010195:Pancreatitis / Q000378:metabolism*
D002352:Carrier Proteins; D000324:Adrenocorticotropic Hormone; D003345:Corticosterone; D006854:Hydrocortisone