Common variable immunodeficiency (CVID) is a heterogeneous primary immunodeficiency disease, leading to recurrent bacterial airway infections and often also autoimmune complications. To shed light on the regulatory lymphocytes from these patients, we analyzed the levels of regulatory B (pro-B10) cell and regulatory T (Treg) cell subpopulations in PBMCs from twenty-six patients diagnosed with CV...

OBJECTIVE To measure cytokine production in ex vivo stimulated leukocyte populations of women with normal pregnancy and those with preeclampsia. METHODS Whole blood from preeclamptic and normal pregnant women was stimulated with LPS or PMA/Ca-ionophore. The percentages of IFN gamma and IL-2, 4, and 10 producing lymphocytes and NK cells and the percentages of TNFalpha, IL-1 beta, and IL-12 pro...

Incubation of ex vivo cultured mature B cells in the presence of nitric oxide or nitric oxide-donor substances delays programmed cell death as determined by the appearance of DNA laddering in agarose gel electrophoresis or by flowcytometry analysis of DNA. Nitric oxide also rescues B cells from antigen-induced apoptosis but fails to provide a costimulatory signal that converts the signal elicit...

background: recent publications about differentiation of stem cells to germ cells have motivated researchers to make new approaches to infertility. in vitro production of germ cells improves understanding differentiation process of male and female germ cells. due to the problem of using embryonic stem cells (esc), it’s necessary the mentioned cells be replaced with some adult multi-potent stem ...

all-trans retinoic acid (atra), as an active metabolite of vitamin a, has been shown to affect immune cells. this study was performed to evaluate the effect of atra on viability, proliferation, activation and lineage-specific transcription factors of cd4+ t cells. cd4+ t cells were  separated  from  heparinized  blood  of  healthy  donors  and  were  cultured  in conditions, some with, some wit...

Detailed analysis of elastic light scattering by spheres in FlowCytometers shows unexpected Lorenz-Mie scattering patterns. The complete scattering matrix S of spheres was measured. Two parameter scatterplots with xand ycoordinates determined by the S11 + Sij and S11 Sij values were obtained. Samples of spheres with very narrow size distributions were analyzed and produced unexpected two parame...

Luteolin (LUT), a flavone, which is universally present as constituent of medicinal plants as well as some vegetables and spices, has been demonstrated display specific anti-carcinogenic effects. However, the mechanisms by which LUT inhibits human osteosarcoma growth remain unknown. The effects of LUT on cell growth in human osteosarcoma U2OS cells were measured by MTT assay and flowcytometry. ...

chronic lymphocytic leukemia (cll) remains an incurable disease that requires innovative new approaches to improve therapeutic outcome. many ferula species, including f. asa-foetida, synthesize terpenyloxy coumarins. one of these coumarins is umbelliprenin, which has been implicated with induction of apoptosis in some cancer cell lines.     in this study induction of apoptosis by umbelliprenin ...