|
|
||||||||

*
Department of Pharmacology, Laboratory of Hepatobiology and Toxicology, University of North Carolina, Chapel Hill, NC 27599; and
Division of Molecular Medicine, North Shore University Hospital, Cornell University Medical College, Manhasset, NY 11030
Activation of Kupffer cells by gut-derived endotoxin is associated
with alcohol-induced liver injury. Recently, it was shown that
CD14-deficient mice are more resistant to endotoxin-induced shock than
wild-type controls. Therefore, this study was designed to investigate
the role of CD14 receptors in early alcohol-induced liver injury using
CD14 knockout and wild-type BALB/c mice in a model of enteral ethanol
delivery. Animals were given a high-fat liquid diet continuously with
ethanol or isocaloric maltose-dextrin as control for 4 wk. The liver to
body weight ratio in wild-type mice (5.8 ± 0.3%) was increased
significantly by ethanol (7.3 ± 0.2%) but was not altered by
ethanol in CD14-deficient mice. Ethanol elevated serum alanine
aminotransferase levels nearly 3-fold in wild-type mice, but not in
CD14-deficient mice. Wild-type and knockout mice given the control
high-fat diet had normal liver histology, whereas ethanol caused severe
liver injury (steatosis, inflammation, and necrosis; pathology
score = 3.8 ± 0.4). In contrast, CD14-deficient mice given
ethanol showed minimal hepatic changes (score = 1.6 ± 0.3,
p < 0.05). Additionally, NF-
B, TGF-
, and
TNF-
were increased significantly in wild-type mice fed ethanol but
not in the CD14 knockout. Thus, chronic ethanol feeding caused more
severe liver injury in wild-type than CD14 knockouts, supporting the
hypothesis that endotoxin acting via CD14 plays a major role in the
development of early alcohol-induced liver
injury.
This article has been cited by other articles:
![]() |
Q. Cao, K. M. Mak, and C. S. Lieber Cytochrome P4502E1 primes macrophages to increase TNF-{alpha} production in response to lipopolysaccharide Am J Physiol Gastrointest Liver Physiol, July 1, 2005; 289(1): G95 - G107. [Abstract] [Full Text] [PDF] |
||||
![]() |
J. Frank, K. Witte, W. Schrodl, and C. Schutt CHRONIC ALCOHOLISM CAUSES DELETERIOUS CONDITIONING OF INNATE IMMUNITY Alcohol Alcohol., September 1, 2004; 39(5): 386 - 392. [Abstract] [Full Text] [PDF] |
||||
![]() |
L. E. Nagy Recent Insights into the Role of the Innate Immune System in the Development of Alcoholic Liver Disease Experimental Biology and Medicine, September 1, 2003; 228(8): 882 - 890. [Abstract] [Full Text] [PDF] |
||||
![]() |
M. Mullarkey, J. R. Rose, J. Bristol, T. Kawata, A. Kimura, S. Kobayashi, M. Przetak, J. Chow, F. Gusovsky, W. J. Christ, et al. Inhibition of Endotoxin Response by E5564, a Novel Toll-Like Receptor 4-Directed Endotoxin Antagonist J. Pharmacol. Exp. Ther., March 1, 2003; 304(3): 1093 - 1102. [Abstract] [Full Text] [PDF] |
||||
![]() |
M. D. Wheeler and R. G. Thurman Up-regulation of CD14 in Liver Caused by Acute Ethanol Involves Oxidant-dependent AP-1 Pathway J. Biol. Chem., February 28, 2003; 278(10): 8435 - 8441. [Abstract] [Full Text] [PDF] |
||||
![]() |
E. Jirillo, D. Caccavo, T. Magrone, E. Piccigallo, L. Amati, A. Lembo, C. Kalis, and M. Gumenscheimer Review: The role of the liver in the response to LPS: experimental and clinical findings Innate Immunity, October 1, 2002; 8(5): 319 - 327. [Abstract] [PDF] |
||||
![]() |
G. L. Su, S. M. Goyert, M.-H. Fan, A. Aminlari, K. Q. Gong, R. D. Klein, A. Myc, W. H. Alarcon, L. Steinstraesser, D. G. Remick, et al. Activation of human and mouse Kupffer cells by lipopolysaccharide is mediated by CD14 Am J Physiol Gastrointest Liver Physiol, September 1, 2002; 283(3): G640 - G645. [Abstract] [Full Text] [PDF] |
||||
![]() |
G. L. Su Lipopolysaccharides in liver injury: molecular mechanisms of Kupffer cell activation Am J Physiol Gastrointest Liver Physiol, August 1, 2002; 283(2): G256 - G265. [Abstract] [Full Text] [PDF] |
||||
![]() |
T. Uesugi, M. Froh, G. E. Arteel, B. U. Bradford, M. D. Wheeler, E. Gabele, F. Isayama, and R. G. Thurman Role of Lipopolysaccharide-Binding Protein in Early Alcohol-Induced Liver Injury in Mice J. Immunol., March 15, 2002; 168(6): 2963 - 2969. [Abstract] [Full Text] [PDF] |
||||
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |