Linked Life Data

8297115

Source:http://linkedlifedata.com/resource/pubmed/id/8297115

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6A
pubmed:dateCreated
1994-2-28
pubmed:abstractText
Peritoneal macrophages from C3H/HeN mice bearing subcutaneous M-16/C or Spon-2 mammary carcinomas had enhanced tumouricidal activity over control macrophages from non-tumour bearers in response to 5,6-dimethylxanthenone-4-acetic acid (5,6-MeXAA), a novel antitumour agent which has been scheduled for clinical evaluation. The effect of a palpable M-16/C tumour growing in C3H/HeN mice was similar to that of Bacillus Calmette-Guerin (BCG) infection, with macrophages being fully activated and tumouricidal without any further stimulus being required in culture. Macrophages from Spon-2 tumour bearing mice behaved like "primed" thioglycollate-elicited macrophages and produced a tumouricidal response to 5,6-MeXXA which was significantly higher than that obtained from resident peritoneal macrophages from non-tumour bearing mice. Resident and thioglycollate-elicited macrophages from C3H/HeJ mice were hyporesponsive not only to lipopolysaccharide (LPS), but to 5,6-MeXAA as well. Hyporesponsiveness was abrogated by BCG infection or by the presence of the M-16/C tumour, but not by the presence of the Spon-2 tumour. In response to LPS at low concentrations, or to 5,6-MeXAA at all concentrations, tumouricidal activity from macrophages from Spon-2-bearing C3H/HeJ mice was severely depressed compared with activity from their C3H/HeN counterparts. However, 5,6-MeXAA induced similar levels of haemorrhagic necrosis of tumours implanted in either C3H/HeJ or C3H/HeN hosts. LPS-induced haemorrhagic necrosis was significantly lower in C3H/HeJ than in C3H/HeN hosts. The results show that the presence of subcutaneous tumours modulates the activity of peritoneal macrophages in mice.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0250-7005
pubmed:author
pubmed:issnType
Print
pubmed:volume
13
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
2069-75
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:articleTitle
Effect of tumour growth on the macrophage response to the antitumour agent 5,6-dimethylxanthenone-4-acetic acid.
pubmed:affiliation
Cancer Research Laboratory, University of Auckland Medical School, New Zealand.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't