The role of TG lymphocytes in cell-mediated immunity in patients with periodontal disease.
Identifieur interne : 008F90 ( Ncbi/Checkpoint ); précédent : 008F89; suivant : 008F91The role of TG lymphocytes in cell-mediated immunity in patients with periodontal disease.
Auteurs : L. Ivanyi ; B. Topic ; P M LydyardSource :
- Clinical and Experimental Immunology [ 0009-9104 ] ; 1981.
Abstract
Blood mononuclear cell suspensions from patients with a severe form of periodontal disease failed to respond by in vitro stimulation to a sonicate from the oral bacterium, Veillonella alcalescens. The proliferative response could be restored by the depletion of TG cells by rosetting with IgG-coated ox erythrocytes and by reconstitution of the cell suspension with 10% plastic-adherent monocytes. Small but statistically significant restoration of the Veillonella response was also achieved by the addition of indomethacin or mefenamic acid to unfractionated cell cultures, indicating only a minor role of prostaglandin (PG) synthesis in the expression of suppressor cells. Since the in vitro response to an unrelated antigen PPD had been found unimpaired, the described TG-cell-mediated suppression of the Veillonella response is apparently antigen-specific.
Url:
PubMed: 6978223
PubMed Central: 1536311
Affiliations:
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PMC:1536311Le document en format XML
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<author><name sortKey="Lydyard, P M" sort="Lydyard, P M" uniqKey="Lydyard P" first="P M" last="Lydyard">P M Lydyard</name>
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<front><div type="abstract" xml:lang="en"><p>Blood mononuclear cell suspensions from patients with a severe form of periodontal disease failed to respond by in vitro stimulation to a sonicate from the oral bacterium, Veillonella alcalescens. The proliferative response could be restored by the depletion of TG cells by rosetting with IgG-coated ox erythrocytes and by reconstitution of the cell suspension with 10% plastic-adherent monocytes. Small but statistically significant restoration of the Veillonella response was also achieved by the addition of indomethacin or mefenamic acid to unfractionated cell cultures, indicating only a minor role of prostaglandin (PG) synthesis in the expression of suppressor cells. Since the in vitro response to an unrelated antigen PPD had been found unimpaired, the described TG-cell-mediated suppression of the Veillonella response is apparently antigen-specific.</p>
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