Plasma hyaluronan, hyaluronidase activity and endogenous hyaluronidase inhibition in sepsis : an experimental and clinical cohort study

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van der Heijden , J , Kolliopoulos , C , Skorup , P , Sallisalmi , M , Heldin , P , Hultstrom , M & Tenhunen , J 2021 , ' Plasma hyaluronan, hyaluronidase activity and endogenous hyaluronidase inhibition in sepsis : an experimental and clinical cohort study ' , Intensive care medicine experimental , vol. 9 , no. 1 , 53 . https://doi.org/10.1186/s40635-021-00418-3

Title: Plasma hyaluronan, hyaluronidase activity and endogenous hyaluronidase inhibition in sepsis : an experimental and clinical cohort study
Author: van der Heijden, Jaap; Kolliopoulos, Constantinos; Skorup, Paul; Sallisalmi, Marko; Heldin, Paraskevi; Hultstrom, Michael; Tenhunen, Jyrki
Other contributor: University of Helsinki, Anestesiologian yksikkö


Date: 2021-10-11
Language: eng
Number of pages: 11
Belongs to series: Intensive care medicine experimental
ISSN: 2197-425X
DOI: https://doi.org/10.1186/s40635-021-00418-3
URI: http://hdl.handle.net/10138/336653
Abstract: Background: Plasma hyaluronan concentrations are increased during sepsis but underlying mechanisms leading to high plasma hyaluronan concentration are poorly understood. In this study we evaluate the roles of plasma hyaluronan, effective plasma hyaluronidase (HYAL) activity and its endogenous plasma inhibition in clinical and experimental sepsis. We specifically hypothesized that plasma HYAL acts as endothelial glycocalyx shedding enzyme, sheddase. Methods: Plasma hyaluronan, effective HYAL activity and HYAL inhibition were measured in healthy volunteers (n = 20), in patients with septic shock (n = 17, day 1 and day 4), in patients with acute pancreatitis (n = 7, day 1 and day 4) and in anesthetized and mechanically ventilated pigs (n = 16). Sixteen pigs were allocated (unblinded, open label) into three groups: Sepsis-1 with infusion of live Escherichia coli (E. coli) 1 x 10(8) CFU/h of 12 h (n = 5), Sepsis-2 with infusion of E. coli 1 x 10(8) CFU/h of 6 h followed by 1 x 10(9) CFU/h of the remaining 6 h (n = 5) or Control with no E. coli infusion (n = 6). Results: In experimental E. coli porcine sepsis and in time controls, plasma hyaluronan increases with concomitant decrease in effective plasma HYAL activity and increase of endogenous HYAL inhibition. Plasma hyaluronan increased in patients with septic shock but not in acute pancreatitis. Effective plasma HYAL was lower in septic shock and acute pancreatitis as compared to healthy volunteers, while plasma HYAL inhibition was only increased in septic shock. Conclusion: Elevated plasma hyaluronan levels coincided with a concomitant decrease in effective plasma HYAL activity and increase of endogenous plasma HYAL inhibition both in experimental and clinical sepsis. In acute pancreatitis, effective plasma HYAL activity was decreased which was not associated with increased plasma hyaluronan concentrations or endogenous HYAL inhibition. The results suggest that plasma HYAL does not act as sheddase in sepsis or pancreatitis.
Subject: Hyaluronan
Hyaluronidase
Hyaluronidase inhibitor
Sepsis
Pancreatitis
Glycocalyx
Sheddase
ALBUMIN DIFFUSION
SPREADING FACTOR
SEPTIC SHOCK
SERUM
GLYCOCALYX
TURNOVER
ISOFORMS
EDEMA
ASSAY
3126 Surgery, anesthesiology, intensive care, radiology
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