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. 1988 Dec;56(12):3040–3045. doi: 10.1128/iai.56.12.3040-3045.1988

Inhibition of activated nonresponder C3H/HeJ lymphocytes by lipopolysaccharide endotoxin.

B M Sultzer 1, R Castagna 1
PMCID: PMC259697  PMID: 2903122

Abstract

The B lymphocytes and macrophages of lipopolysaccharide (LPS) nonresponder C3H/HeJ mice were found to respond to certain R types of LPS endotoxin in a fashion resembling that ordinarily seen with the cells from normal responder mice. DNA synthesis, polyclonal antibody synthesis, and interleukin-1 activity were stimulated by Bordetella pertussis LPS and Salmonella minnesota R595 LPS, although to a lesser extent than with responder cells. Mitogenesis stimulated by both LPSs was inhibited by polymyxin B; this finding provided evidence that any trace endotoxin-associated proteins were not responsible for the activity. Of particular interest was the finding that wild-type smooth LPS actually inhibited activation of the C3H/HeJ B cells not only by the LPS but also by mitogenic proteins, including purified protein derivative of tuberculin. The nonspecific nature of this inhibition and the fact that maximal inhibition occurred some 9 to 12 h into the culture period suggested that the proliferation of the B cells was affected by smooth-type LPS in a manner heretofore unrecognized. These findings permit a new approach to the study of how LPS endotoxin affects cells of the immune system.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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