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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1978-10-27
pubmed:abstractText
The prophylactic and therapeutic effects of BCG on the tumors induced by 3-methylcholanthrene (MCA) were studied comparatively between two inbred mouse strains, SWM/Ms and C3H/He, the first tumor appeared 5 weeks after MCA and the cumulative tumor incidence reached almost 100% within 20 weeks. On the other hand, the first tumor appeared 8 weeks after MCA in SWM/Ms, the number of tumor-bearers increased more slowly than in C3H/He, and the final tumor incidence (at 30 weeks) was about 90-80%. Single subcutaneous injection with BCG 2 weeks prior to MCA significantly protected SWM/Ms from tumor development, but not in C3H/He. These tumors, once appeared grew progressively and killed the hosts equally in both the strains. Intratumor (i.t.) injection with BCG showed more or less therapeutic effects in SWM/Ms; most tumors regressed or retarded after BCG. The time period after tumor-appearance to tumor-death was prolonged in most of SWM/Ms mice given i.t. injection with BCG, except a few mice that died earlier than non-treated controls after BCG. Contrary, no therapeutic effect of i.t. injection with BCG was observed in C3H/He. different host responses to BCG between SWM/Ms and C3H/He were found by the peritoneal macrophage disappearance test and the footpad reaction test; SWM/Ms was a high-responder to BCG and C3H/He was a low-responder. The marked differences between SWM/Ms and C3H/He in prophylactic and therapeutic effects of BCG on the autochthonous tumors were discussed in terms of difference of the host immune response to BCG that is defined genetically.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0021-5112
pubmed:author
pubmed:issnType
Print
pubmed:volume
31
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
143-54
pubmed:dateRevised
2003-11-14
pubmed:meshHeading
pubmed:year
1978
pubmed:articleTitle
Mouse-strain difference in immunoprophylactic and immunotherapeutic effects of BCG on carcinogen-induced autochthonous tumors.
pubmed:publicationType
Journal Article