Abstract:
:The T-cell regulatory function has been evaluated in lines of mice genetically selected according to the High (H) and Low (L) antibody responsiveness to heterologous erythrocytes. The inhibition of antibody production following CD4+ subset depletion was stronger in L than in H mice. The dose of CD4-specific monoclonal antibody (MoAb) needed for a 50% inhibition of the anti-sheep erythrocyte antibody response was much lower in L mice, even when their responsiveness was improved by repeated antigen injections or by co-injection of lipopolysaccharide as an adjuvant. Lymph-node cells from L mice responded normally or even better than those from H mice to in vitro non-specific triggering via lectins, exogenous superantigens or CD3-specific MoAb. In contrast, the antigen-specific responses of the lymph-node cells from protein-primed mice were consistently lower in the Low responder mice. Altogether the results suggest that a defective stimulation of T helper lymphocytes by the antigen contributes to the weak antibody response of L mice.
journal_name
Scand J Immunoljournal_title
Scandinavian journal of immunologyauthors
Cabrera WH,Siqueira M,Takahashi NS,Ribeiro OG,Araujo LM,Mouton D,Ibanez OMdoi
10.1111/j.1365-3083.1995.tb03567.xsubject
Has Abstractpub_date
1995-03-01 00:00:00pages
293-7issue
3eissn
0300-9475issn
1365-3083journal_volume
41pub_type
杂志文章abstract::Affinity-purified human IgG anti-tetanus antibody was subjected to papain and then pepsin digestion, and residual fragments retaining antibody activity were re-isolated by adsorption and elution from Sepharose-tetanus toxoid columns. Both Fab' and Fv fragments isolated by gel filtration showed strong reactivity with a...
journal_title:Scandinavian journal of immunology
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journal_title:Scandinavian journal of immunology
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journal_title:Scandinavian journal of immunology
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journal_title:Scandinavian journal of immunology
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journal_title:Scandinavian journal of immunology
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journal_title:Scandinavian journal of immunology
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journal_title:Scandinavian journal of immunology
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journal_title:Scandinavian journal of immunology
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journal_title:Scandinavian journal of immunology
pub_type: 杂志文章
doi:10.1111/j.1365-3083.1990.tb03208.x
更新日期:1990-12-01 00:00:00
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journal_title:Scandinavian journal of immunology
pub_type: 杂志文章
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journal_title:Scandinavian journal of immunology
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journal_title:Scandinavian journal of immunology
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journal_title:Scandinavian journal of immunology
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journal_title:Scandinavian journal of immunology
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