Linked Life Data

8757962

Source:http://linkedlifedata.com/resource/pubmed/id/8757962

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
7
pubmed:dateCreated
1997-1-21
pubmed:abstractText
Rat Kupffer cell (KC)-mediated cytotoxicity against both the syngeneic hepatoma cell line AH70 and hepatocytes was evaluated by changes in mitochondrial function, and the possible role of ICAM-1/CD18 in the interaction between the cells was studied. Rhodamine 123 fluorescence, a marker of the mitochondrial membrane potential, decreased in AH70 cells after co-culture with CK, while that in hepatocytes was unchanged by co-culture. This decrease was blocked by anti-ICAM-1 anti-CD18 and the inhibition of nitric oxide synthesis. Cytometric studies demonstrated that ICAM-1 expression on AH70 cells increased after addition of IFN-gamma, IL-1beta, tumor necrosis factor (TNF)-alpha or KC, while in hepatocytes ICAM-1 was not increased. Anti-ICAM-1 pretreatment inhibited the increase in ICAM-1 expression and the decrease in rhodamine 123 fluorescence on AH70 cells after co-culture with KC. CD18 on KC was increased only after co-culture with AH70. TNF-alpha but not IFN-gamma was detected in the supernatant of co-culture between KC and AH70 cells, and this production was partially inhibited by anti-ICAM-1 and anti-CD18. The activity of inducible nitric oxide synthase in Kupffer cells and the levels of nitrites and nitrates in the co-culture supernatant increased over time, and this increase was attenuated either by addition of NO synthesis inhibitors, anti-ICAM-1 or anti-CD18. These results indicate that the rat KC causes mitochondrial dysfunction in cancer cells via the production of NO and cell-to-cell adhesion via ICAM-1/CD18 has an important role in this cytotoxic process.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
0953-8178
pubmed:author
pubmed:issnType
Print
pubmed:volume
8
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1165-72
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
1996
pubmed:articleTitle
Kupffer cell-mediated cytotoxicity against hepatoma cells occurs through production of nitric oxide and adhesion via ICAM-1/CD18.
pubmed:affiliation
Department of Internal Medicine, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160, Japan.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't