نتایج جستجو برای: acquired immunity
تعداد نتایج: 256049 فیلتر نتایج به سال:
By analysing data on the age distribution of cerebral malaria among sites of different transmission intensities, we conclude that the most plausible explanation for the epidemiological patterns seen is that (i) cerebral malaria is caused by a distinct set of Plasmodium falciparum antigenic types; (ii) these antigenic types or 'CM strains' are very common and induce strong strain-specific immuni...
An outstanding feature of the phenomenon of acquired immunity in tuberculosis is the lack of multiplication of virulent mycobacteria in the tissues of the immunized host. As the result, viable, virulent, tubercle bacilli may remain dormant in vivo for long periods of time. The nature of the acquired specific mechanism responsible for this bacteriostasis in vivo has never been determined althoug...
In vivo administration of NKT cell ligand, alpha-galactosylceramide (alpha-GalCer), caused the activation of NKT cells to induce a strong NK activity and cytokine production by CD1d-restricted mechanisms. Surprisingly, we also found that alpha-GalCer induced the activation of immunoregulatory cells involved in acquired immunity. Specifically, in vivo administration of alpha-GalCer resulted in t...
HIV infection increases the burden of disease of malaria in pregnancy, in part by impairing the development of immunity. We measured total IgG and phagocytic antibodies against variant surface antigens of placental-type CS2 parasites in 187 secundigravidae (65% HIV infected). In women with placental malaria infection, phagocytic antibodies to CS2(VSA) were decreased in the presence of HIV (p = ...
Chlamydia trachomatis is the most common cause of bacterial sexually transmitted disease in the United States, as well as the leading cause of preventable blindness worldwide. Immunity to C. trachomatis requires a variety of cell types, each employing an array of effector functions. Recent work has demonstrated that both CD4+ and CD8+ T lymphocytes play a major role in protective immunity to C....
Intraepithelial T Cells May Bridge a Gap between Innate Immunity and Acquired Immunity to Herpes Simplex Virus Type 2 Hitoshi Nishimura, Toshiki Yajima, Yoshiko Kagimoto, Mutsuhiro Ohata, Taketo Watase, Kenji Kishihara, Fumi Goshima, Yukihiro Nishiyama, and Yasunobu Yoshikai* Division of Host Defense, Medical Institute for Bioregulation, Kyushu University, Fukuoka 812-8582, and Laboratory of Ho...
Given the scope of the worldwide health problems caused by the acquired immunodeficiency syndrome, tuberculosis, and malaria, it is imperative that vaccines be developed to prevent these infections. Recent advances in the understanding of these diseases suggest that T-lymphocyte-mediated immunity is important in containing these infections. The application of novel vaccine technologies for elic...
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