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. 1981 Dec;46(3):621–626.

Role of T gamma cells in the in vitro IgE response after antigenic stimulation.

C Vela, R Garcia, L Tricas, C Platas, C Lahoz
PMCID: PMC1536293  PMID: 6978222

Abstract

Fifteen patients with seasonal allergic pollenosis and five controls were investigated to elucidate the role of the T gamma-cell population in the in vitro IgE response by peripheral blood lymphocytes (PBL). In vitro IgE production by PBL of atopic patients after antigenic stimulation was measured in culture supernatants. The optimal dose for antigenic stimulation was found to be 0.16 micrograms/20 X 10(6) cells of purified antigen. No difference was found when comparing the percentages of T cells (E rosettes) between the two groups: mean per cent for controls was 69.2 +/- 5.76 versus 69.54 +/- 4.42 for the allergic group. With regard to the T gamma-cell population, the values obtained by rosetting with ox erythrocytes sensitized with IgG antibody were 12 +/- 0.71% in normals and 9.8 +/- 1.32% in those with allergic pollenosis. This difference, although significant, may not be enough to explain the different pattern when the in vitro IgE production of both groups investigated was compared. In order to detect the role of T gamma cells in this system, lymphocyte cultures, depleted of T gamma cells, were performed and compared with unfractionated cultures from the same donors. Our results show no differences in the in vitro IgE production when T gamma cells were depleted as compared with the unfractionated cultures.

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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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