Learn More
Rat thymic epithelial cells (TEC) in long-term culture were characterized by anticytokeratin monoclonal antibodies (mAbs) and electron microscopy. Phenotypic analysis performed by a large panel of mAbs showed that the highest percentage of these cells was of the subcapsular/medullary type. Recombinant rat interferon (IFN)-gamma up-regulated class-I and(More)
Royal jelly (RJ), especially its protein components, has been shown to possess immunomodulatory activity. However, almost nothing is known about the influence of RJ fatty acids on the immune system. In this work we studied the effect of 10-hydroxy-2-decanoic acid (10-HDA) and 3,10-dihydroxy-decanoic acid (3,10-DDA), isolated from RJ, on the immune response(More)
In this work, the interaction between a rat cortical thymic epithelial cell (TEC) line (R-TNC.1) with nursing activity and thymocytes as well as BWRT 8 thymocyte hybridoma (TH) cells has been studied. The R-TNC.1 cell line significantly bound thymocytes and TH. Binding was stronger during the first 30 min of cell incubation and was followed by a progressive(More)
In this work the effect of different components isolated from royal jelly (RJ) was studied using an in vitro rat T-cell proliferation assay. We found that lower concentrations of MEL 174 (final water extract of RJ) and MEL 147 (3-10-dihydroxydecanoic acid) stimulated T-cell proliferation, triggered by concanavalin A (Con-A) and the process was followed by(More)
Cytokeratin (CK) polypeptide expression within the thymic epithelium of several mammalian species (mouse, rat, calf, pig, rabbit, and human) has been analyzed by the streptavidin-biotin immunoperoxidase method. Comparative analysis by a large panel of 17 monoclonal antibodies (mAbs) specific for individual CK polypeptides, pairs, or groups showed(More)
An epithelial cell line (TE-R 2.5) was established from a long-term culture of rat thymic epithelium. Its epithelial nature was confirmed using anti-cytokeratin (CK) monoclonal antibodies (mAb) and electron-microscopy. TE-R 2.5 cells were reactive with K 8.13, K 8.12, CK 8, R-MC 18, R-MC 19 and Mar 3 mAb and bind Ulex europaeus agglutinin I. Based on the(More)
A panel monoclonal antibodies (mAbs) raised to rat thymic non-lymphoid cells has been shown to discriminate between distinct subpopulations of macrophages depending on their anatomic localization in the thymus. These reagents were used in this study to examine the expression of macrophage-associated antigens in primary culture of rat thymic stromal cells.(More)
7-thia-8-oxoguanosine (immunosine) is a guanosine analogue showing immunostimulatory activity on different components of the immune system, including B lymphocytes, natural killer cells and macrophages. However, little is known about its effect on T-cell functions. In this work it was demonstrated that immunosine at concentrations between 10 microM and 1 mM(More)
BACKGROUND Dendritic cells (DC) have been used for immunotherapy of malignant tumors, different kinds of infections, and other clinical conditions. For that purpose, optimal conditions for the generation of functionally mature DC in vitro are required. Two different protocols for the induction of maturation of monocyte-derived DC (MDDC) were compared in(More)
A panel of monoclonal antibodies (mAb) raised to antigens of rat thymic non-lymphoid cells (predominantly macrophages and granulocytes) was immunohistochemically characterized. Based on their staining patterns on cryostat thymic sections and double labellings using acid phosphatase activity, anti-cytokeratin mAb to exclude binding to epithelium or ED1 and(More)