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Antiphosphocholine antibodies found in normal mouse serum are protective against intravenous infection with type 3 streptococcus pneumoniae

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TLDR
The antiphosphocholine antibody in normal mouse sera (NMS) provides protection against intravenous infection with encapsulated strain WU2 of type 3 Streptococcus pneumoniae.
Abstract
The antiphosphocholine (PC) antibody in normal mouse sera (NMS) provides protection against intravenous infection with encapsulated strain WU2 of type 3 Streptococcus pneumoniae. Mice unable to make anti-PC antibody, as a result of suppression with anti-T-15 idiotype or inheritance of the xid gene of CAB/N mice, are highly susceptible to infection with strain WU2. Mice inheriting the xid gene can be protected with NMS from immunologically normal mice or with IgM hybridoma anti-PC antibody. The protective effect of NMS can be removed with PC-containing immunoabsorbents.

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Journal ArticleDOI

Marginal Zone and B1 B Cells Unite in the Early Response against T-Independent Blood-Borne Particulate Antigens

TL;DR: Splenic MZ and B1 B cells endowed with a "natural memory" provide a bridge between the very early innate and the later appearing adaptive immune response.
Journal ArticleDOI

Control of early viral and bacterial distribution and disease by natural antibodies.

TL;DR: In antibody-free mice infected with various viruses or with Listeria monocytogenes, viral or bacterial Titers in peripheral organs were 10 to 100 times greater than in antibody-competent mice (and enhanced their susceptibility to some infections), and titers in secondary lymphoid organs were very low.
Journal ArticleDOI

Origins and functions of B-1 cells with notes on the role of CD5.

TL;DR: Evidence indicates that B-1a cells can derive from adult precursors expressing an appropriate specificity when the (self-) antigen is present, and the CD5 molecule can function as a negative regulator of BCR signaling that may help prevent inappropriate activation of autoreactive B- 1a cells.
Journal ArticleDOI

Recognition of pneumolysin by Toll-like receptor 4 confers resistance to pneumococcal infection.

TL;DR: The interaction of pneumolysin with TLR4 is critically involved in the innate immune response to pneumococcus and is found to stimulate tumor necrosis factor-α and IL-6 release in wild-type macrophages but not in macrophage from mice with a targeted deletion of the cytoplasmic TLR-adapter molecule myeloid differentiation factor 88, suggesting the involvement of the TLRs in pneumoly sin recognition.
Journal ArticleDOI

Biological properties of interleukin-10

Maureen Howard, +1 more
- 01 Jan 1992 - 
TL;DR: What is currently known of the biological properties of IL-10 and its clinical potential are summarized and speculate on itsclinical potential are speculated on.
References
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Journal ArticleDOI

A serological differentiation of human and other groups of hemolytic streptococci.

TL;DR: Five strains of hemolytic streptococci isolated from man, other animals, milk, and cheese have been classified into five groups, which bear a definite relationship to the sources of the cultures, each being chemically distinct and ser specific in the individual groups.
Book ChapterDOI

Studies on the chemical nature of the substance inducing transformation of pneumococcal types

TL;DR: Evidence is presented that the chemically induced alterations in cellular structure and function are predictable, type-specific, and transmissible in series.
Journal ArticleDOI

Prevention of pneumococcal pneumonia by immunization with specific capsular polysaccharides

TL;DR: It is suggested that an over-all reduction in the incidence of carriers was responsible for the lowered rates for pneumococcal pneumonia in the non-immunized group.
Journal Article

Subclass restriction of murine anti-carbohydrate antibodies.

TL;DR: In this article, an analysis of the subclass distribution of murine antibodies directed against groups A and C streptococcal carbohydrate, alpha-(1 leads to 3) dextran and phosphocholine yields the surprising observation that these carbohydrate antigens stimulate IgG responses largely restricted to the rare IgG3 subclass.
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