Increased 5‐lipoxygenase activity in massive hepatic cell necrosis in the rat correlates with neutrophil infiltration

Rats were treated with heat‐killed Propionibacterium acnes and subsequent injection of a small amount of lipopolysaccharide after 7 days. After 24 hr most of the rats died of massive liver cell necrosis. Nonparenchymal liver cells were isolated from this liver injury model and incubated with arachid...

Full description

Saved in:
Bibliographic Details
Published in:Hepatology (Baltimore, Md.) Md.), 1992-08, Vol.16 (2), p.462-468
Main Authors: Kawada, Norifumi, Ueda, Natsuo, Mizoguchi, Yasuhiro, Kobayashi, Kenzo, Monna, Takeyuki, Morisawa, Seiji, Ishimura, Kazunori, Suzuki, Toshiko, Yamamoto, Shozo
Format: Article
Language:English
Subjects:
Animals
Arachidonate 5-Lipoxygenase - analysis
Arachidonic Acid - metabolism
Biological and medical sciences
Gastroenterology. Liver. Pancreas. Abdomen
Hydroxyeicosatetraenoic Acids - analysis
Immunohistochemistry
Leukotriene B4 - analysis
Lipopolysaccharides - toxicity
Liver - metabolism
Liver - pathology
Male
Medical sciences
Necrosis
Neutrophils - pathology
Propionibacterium acnes
Rats
Rats, Inbred Strains
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Rats were treated with heat‐killed Propionibacterium acnes and subsequent injection of a small amount of lipopolysaccharide after 7 days. After 24 hr most of the rats died of massive liver cell necrosis. Nonparenchymal liver cells were isolated from this liver injury model and incubated with arachidonic acid. Reverse‐phase high‐pressure liquid chromatography detected the 5‐lipoxygenase metabolites (leukotriene B4 and 5‐hydroxy‐arachidonic acid), whereas these compounds were produced in negligible amounts when the rats were treated with P. acnes only. Immunohistochemical studies with 5‐lipoxygenase antiserum revealed that the injured livers contained a large number of positively stained round cells with segmented nuclei, which were rarely found in the livers treated with P. acnes only. These positively stained cells were histologically identified as neutrophils. The results suggested that the increased 5‐lipoxygenase activity in the injured rat liver is attributable to the infiltrating neutrophils rather than to nonparenchymal hepatic cells. (HEPATOLOGY 1992;16:462–468.)
ISSN:0270-9139
1527-3350
DOI:10.1002/hep.1840160227