During immune responses, different classes of T cells arise: Th1, Th2, and Th17. Mobilizing the right class plays a critical role in successful host defense and therefore defining the ratios of Th1/Th2/Th17 cells within the antigen-specific T cell repertoire is critical for immune monitoring purposes. Antigen-specific Th1, Th2, and Th17 cells can be detected by challenging peripheral blood mono...

Th1 cells, which express IL-18R, produce IFN-gamma in response to Ag and IL-2 and increase further production of IFN-gamma upon additional IL-18 stimulation. They simultaneously produce Th2 cytokines (IL-9 and IL-13), GM-CSF and chemokines (RANTES, MIP-1alpha). Human Th1 cells also produce IFN-gamma and IL-13 in response to anti-CD3 and IL-18. Recently, we demonstrated Th1 cells induce intrinsi...

Childhood idiopathic thrombocytopenic purpura (ITP) resolves usually after the first episode, although it may recur, and in 10% to 20% of patients develops into a chronic disorder. Evidence of the immunoregulatory role of Th1/Th2 responses in autoimmune diseases prompted us to perform a prospective study of Th1/Th2 gene expression profiles and transforming growth factor beta (TGF-beta) plasma l...

it is well accepted that in experimental model of leishmania major infection, balb/c mice mount a th2 response and produce igg1 predominantly whereas c57bl/6mice enhance th1 response with the biased production of igg2a antibodies. therefore, screening for parasite antigens on the basis of reactivity with sera from infected susceptible or resistant mice might be used for the identification of th...

Interleukin-12 (IL-12), a heterodimeric cytokine produced by activated monocytes and dendritic cells, plays a crucial role in regulating interferon (IFN)-gamma production and in the generation of IFN-gamma-producing T helper 1 (Th1) cells. Here we show that the IL-12 receptor (IL-12R) beta 2 subunit, a recently cloned binding and signal transducing component of the IL-12R, is expressed on human...

Asthma is a syndrome with different inflammatory phenotypes. Animal models have shown that, after sensitization and allergen challenge, Th2 and Th1 cells contribute to the development of allergic airway disease. We have previously demonstrated that naturally occurring regulatory T cells (nTregs) can only marginally suppress Th2-induced airway inflammation and airway hyperresponsiveness. In this...

The nature (Th1 versus Th2) and dynamics of the autoimmune response during the development of insulin-dependent diabetes mellitus (IDDM) and after immunotherapy are unclear. Here, we show in nonobese diabetic (NOD) mice that the autoreactive T cell response starts and spreads as a pure Th1 type autoimmunity, suggesting that a spontaneous Th1 cascade underlies disease progression. Surprisingly, ...

conclusions results showed that hcvcp + bcg induced a moderate ctl and mixed th1/th2 immune responses with higher levels of cell proliferation and ifn-γ secretion, indicating that bcg may have a better outcome when formulated in hcvcp-based subunit vaccines. results expression and purification of core protein around the expected size (21 kda) was confirmed by western blotting. the hcvcp + bcg v...

Allergic asthma is an inflammatory lung disease driven by Th2. We have shown that both Th1 and Th2 sensitization to inhaled OVA depend on the presence and concentration of LPS, where high concentrations (LPS(hi)) induce Th1 and low concentrations (LPS(lo)), Th2. Stromal cells (SCs), such as airway SCs, exacerbate established airway disease; however, little is known about their role early during...

Normal pregnancy is considered as a Th2 type immunological state that favors an immune-tolerance environment in order to prevent fetal rejection. Preeclampsia (PE) has been classically described as a Th1/Th2 imbalance; however, the Th1/Th2 paradigm has proven insufficient to fully explain the functional and molecular changes observed during normal/pathological pregnancies. Recent studies have e...