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The alterations in hepatic microcirculation and Kupffer cell activity after biliary drainage in jaundiced mice
Author(s) -
Okaya Tomohisa,
Nakagawa Koji,
Kimura Fumio,
Shimizu Hiroaki,
Yoshidome Hiroyuki,
Ohtsuka Masayuki,
Kato Atsushi,
Yoshitomi Hideyuki,
Ito Hiroshi,
Miyazaki Masaru
Publication year - 2012
Publication title -
journal of hepato‐biliary‐pancreatic sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.63
H-Index - 60
eISSN - 1868-6982
pISSN - 1868-6974
DOI - 10.1007/s00534-011-0435-0
Subject(s) - kupffer cell , microcirculation , medicine , perfusion , pathology , biliary tract , jaundice , intravital microscopy , cholestasis
Background/purpose The aim of this study is to examine the effects of biliary drainage on hepatic microcirculation and Kupffer cell activity in the liver with obstructive jaundice. Methods Common bile duct ligation and division was performed on C57BL/6 mice to induce obstructive jaundice. Seven or 14 days after surgery, some mice underwent biliary drainage. Three days after biliary drainage, sinusoidal perfusion, leukocyte rolling and sticking in the postsinusoidal venules, and the diameters of sinusoids containing blood flow were evaluated using intravital microscopy. Kupffer cell phagocytic activity was estimated as the ratio of Kupffer cells that phagocytosed fluorescent‐labeled particles to sinusoids containing blood flow. Results Sinusoidal perfusion after biliary drainage was significantly increased compared with that in livers with obstructive jaundice, but remained decreased compared with controls. Although the number of rolling leukocytes and sticking leukocytes was significantly decreased, the diameters of sinusoids remained reduced, associated with an increase in Kupffer cell phagocytic activity compared with controls even after biliary drainage. Conclusions Leukocyte—endothelial cell interaction is ameliorated but sinusoids remain narrowed due to swelling of activated Kupffer cells; this might cause deterioration of hepatic microcirculation during the early phase of biliary drainage.