Proliferation induced by Plasmodium falciparum antigen and interleukin-2 production by lymphocytes isolated from malaria-immune individuals

T G Theander; I C Bygbjerg; S Jepsen; M Svenson; A Kharazmi; P B Larsen; K Bendtzen

Proliferation induced by Plasmodium falciparum antigen and interleukin-2 production by lymphocytes isolated from malaria-immune individuals

T G Theander, I C Bygbjerg, S Jepsen, M Svenson, A Kharazmi, P B Larsen, K Bendtzen

Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › peer review

31 Citationer (Scopus)

Abstract

Udgivelsesdato: 1986-Jul

Originalsprog	Engelsk
Tidsskrift	Infection and Immunity
Vol/bind	53
Udgave nummer	1
Sider (fra-til)	221-5
Antal sider	4
ISSN	0019-9567
Status	Udgivet - 1986

Bibliografisk note

Keywords: Adult; Antigens, Protozoan; Humans; Interleukin-2; Lectins; Lymphocyte Activation; Malaria; Plasmodium falciparum; T-Lymphocytes; T-Lymphocytes, Helper-Inducer; T-Lymphocytes, Regulatory

Citationsformater

Proliferation induced by Plasmodium falciparum antigen and interleukin-2 production by lymphocytes isolated from malaria-immune individuals. / Theander, T G ; Bygbjerg, I C; Jepsen, S; Svenson, M; Kharazmi, A; Larsen, P B; Bendtzen, K.

I: Infection and Immunity, Bind 53, Nr. 1, 1986, s. 221-5.

Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › peer review

@article{8e032410a0dd11dd86a6000ea68e967b,

title = "Proliferation induced by Plasmodium falciparum antigen and interleukin-2 production by lymphocytes isolated from malaria-immune individuals",

abstract = "Affinity-purified Plasmodium falciparum soluble antigens (SPAg) isolated from in vitro cultures of the parasite were shown to be relatively free of nonspecific polyclonal activators. To determine the presence of lymphocytes with specificity against SPAg in the peripheral blood of malaria-immune individuals, the proliferative response and the interleukin-2 (IL-2) production of SPAg-activated mononuclear cells (MNCs) from individuals unexposed, sensitized, and immune to malaria were measured. It was found that MNC isolated from malaria-immune individuals proliferated in response to SPAg and that this activation resulted in measurable IL-2 production in 5 of 10 MNC cultures. MNC isolates from most unexposed individuals did not respond to SPAg. To establish which cells responded to SPAg, different subpopulations of MNCs were tested. Only T helper cells were found to respond, and they responded only when cocultured with monocytes. The finding of parasite-specific T helper cells in the blood of malaria-immune individuals and the fact that some of these cells were able to produce IL-2 in vitro support the hypothesis that in malaria the cellular part of the protective immune response is initiated by immune T cells. These cells may activate nonspecific effector cells (i.e., macrophages) that eliminate the parasite.",

author = "Theander, {T G} and Bygbjerg, {I C} and S Jepsen and M Svenson and A Kharazmi and Larsen, {P B} and K Bendtzen",

note = "Keywords: Adult; Antigens, Protozoan; Humans; Interleukin-2; Lectins; Lymphocyte Activation; Malaria; Plasmodium falciparum; T-Lymphocytes; T-Lymphocytes, Helper-Inducer; T-Lymphocytes, Regulatory",

year = "1986",

language = "English",

volume = "53",

pages = "221--5",

journal = "Infection and Immunity",

issn = "0019-9567",

publisher = "American Society for Microbiology",

number = "1",

}

TY - JOUR

T1 - Proliferation induced by Plasmodium falciparum antigen and interleukin-2 production by lymphocytes isolated from malaria-immune individuals

AU - Theander, T G

AU - Bygbjerg, I C

AU - Jepsen, S

AU - Svenson, M

AU - Kharazmi, A

AU - Larsen, P B

AU - Bendtzen, K

N1 - Keywords: Adult; Antigens, Protozoan; Humans; Interleukin-2; Lectins; Lymphocyte Activation; Malaria; Plasmodium falciparum; T-Lymphocytes; T-Lymphocytes, Helper-Inducer; T-Lymphocytes, Regulatory

PY - 1986

Y1 - 1986

N2 - Affinity-purified Plasmodium falciparum soluble antigens (SPAg) isolated from in vitro cultures of the parasite were shown to be relatively free of nonspecific polyclonal activators. To determine the presence of lymphocytes with specificity against SPAg in the peripheral blood of malaria-immune individuals, the proliferative response and the interleukin-2 (IL-2) production of SPAg-activated mononuclear cells (MNCs) from individuals unexposed, sensitized, and immune to malaria were measured. It was found that MNC isolated from malaria-immune individuals proliferated in response to SPAg and that this activation resulted in measurable IL-2 production in 5 of 10 MNC cultures. MNC isolates from most unexposed individuals did not respond to SPAg. To establish which cells responded to SPAg, different subpopulations of MNCs were tested. Only T helper cells were found to respond, and they responded only when cocultured with monocytes. The finding of parasite-specific T helper cells in the blood of malaria-immune individuals and the fact that some of these cells were able to produce IL-2 in vitro support the hypothesis that in malaria the cellular part of the protective immune response is initiated by immune T cells. These cells may activate nonspecific effector cells (i.e., macrophages) that eliminate the parasite.

AB - Affinity-purified Plasmodium falciparum soluble antigens (SPAg) isolated from in vitro cultures of the parasite were shown to be relatively free of nonspecific polyclonal activators. To determine the presence of lymphocytes with specificity against SPAg in the peripheral blood of malaria-immune individuals, the proliferative response and the interleukin-2 (IL-2) production of SPAg-activated mononuclear cells (MNCs) from individuals unexposed, sensitized, and immune to malaria were measured. It was found that MNC isolated from malaria-immune individuals proliferated in response to SPAg and that this activation resulted in measurable IL-2 production in 5 of 10 MNC cultures. MNC isolates from most unexposed individuals did not respond to SPAg. To establish which cells responded to SPAg, different subpopulations of MNCs were tested. Only T helper cells were found to respond, and they responded only when cocultured with monocytes. The finding of parasite-specific T helper cells in the blood of malaria-immune individuals and the fact that some of these cells were able to produce IL-2 in vitro support the hypothesis that in malaria the cellular part of the protective immune response is initiated by immune T cells. These cells may activate nonspecific effector cells (i.e., macrophages) that eliminate the parasite.

M3 - Journal article

C2 - 2941375

VL - 53

SP - 221

EP - 225

JO - Infection and Immunity

JF - Infection and Immunity

SN - 0019-9567

IS - 1

ER -