Virtual sensing technology uses mathematical calculations instead of natural measurements when the latter are too difficult or expensive. Nowadays, application of virtual light sensing technology becomes almost mandatory for daylight analysis at the stage of architectural project development. Daylight Autonomy metrics should be calculated multiple times during the project.
View Article and Find Full Text PDFThe rapid development of machine learning technologies in recent years has led to the emergence of CNN-based sensors or ML-enabled smart sensor systems, which are intensively used in medical analytics, unmanned driving of cars, Earth sensing, etc. In practice, the accuracy of CNN-based sensors is highly dependent on the quality of the training datasets. The preparation of such datasets faces two fundamental challenges: data quantity and data quality.
View Article and Find Full Text PDFThe main directions in evolutionary immunology include: (1) study of phylogenetic relationships between nonspecific (hereditary) and specific (acquired, or adaptive) immunity; (2) study of the phenomena of graft rejection in a phylogenetic series; (3) study of occurrence and historical development of T- and B-systems of immunity; (4) study of phylogenesis of different cell types of the immunity system; and (5) study of historical development of the ability to specifically recognize foreign antigenic material. Because many problems of evolutionary immunology remain unsolved, studies in this field will be continued.
View Article and Find Full Text PDFThe origin of the ability of immunoglobulins (Igs) and T-cell receptors (TCRs) to specifically recognize antigens is related to the evolutionary development of proteins of the immunoglobulin superfamily (IgSF). The IgSF proteins are characterized by specific domain organization of molecules and statistically significant homology with known Igs. Four types of Ig domains (V1, V2, C1, and C2), differing from one another both in variations in their spatial organization and in the number of amino acid residues, have been distinguished.
View Article and Find Full Text PDFA set of CTL-lines in the system differing in the whole H-2 complex, as well as in distinct subregions of H-2, was established. These lines were routinely tested in Cr51-release assay to insure that they retained lytic activity and antigen-specificity. The result of the interaction of CTL with H-2Kb-molecule and alpha1-thymosine was transition of CTL into a reversible state of anergy.
View Article and Find Full Text PDFCombined cultivation of macrophages with syngeneic thymocytes resulted in accumulation of soluble H-2Kk antigens in culture medium. Incubation of intact autologous thymocytes with these soluble class I MHC molecules was shown to induce functional maturation of thymocytes assayed in local graft-vs-host reaction. Similar thymocyte costimulating activity was detected for the papain-solubilized purified H-2Kk antigens.
View Article and Find Full Text PDFZh Mikrobiol Epidemiol Immunobiol
November 1994
The immunological evaluation of the influence of individual gel-chromatographic antigenic fractions (GAF) of F. tularensis outer membrane on different forms of T-cell reactiveness, such as delayed hypersensitivity (DH), proliferation of lymphocytes in the reaction of blast transformation (RBT) and mixed lymphocyte culture (MLC), has been made. As revealed in this study, GAF isolated from F.
View Article and Find Full Text PDFThe preparations of alpha 1-thymosin (T), alpha-tumor necrotic factor (TNF) and their based hybrid proteins: T-TNF, TNF-T, and T-TNF-T were studied by using a wide spectrum of immunobiological tests. In the L-929 cells, T-TNF preserved cytotoxicity unique to TNF; TNF-T preserved it 10 times less, and T-NTF-T was completely inactive. TNF-T inhibited the growth of Molt-4, Jm-9, Raji cells by 63 = 84%, and TNF suppressed only Raji cells by 50%.
View Article and Find Full Text PDFZh Mikrobiol Epidemiol Immunobiol
September 1994
The influence of different gel-chromatographic antigenic fractions (GAF) of the membrane of F. tularensis, strain A'Cole, on different forms of reactivity of mouse peritoneal macrophages, such as the adhesion, ingestion and presentation of antigen on the cell surface, has been immunologically evaluated. GAF isolated from F.
View Article and Find Full Text PDFPreviously it was shown [1] that amino acid substitutions at the region of the first alpha-helix of IL-2 specifically inactivate its reactivity with the intermediate-affinity receptor p70, and mutations in the fifth alpha-helix specifically inactivate the binding to the low-affinity receptor p55. We have synthesized the peptides corresponding to the putative binding site of IL-2 with the intermediate-affinity receptor p70 and found that the nonapeptide corresponding to the sequence 27-35 of the mature IL-2 [2] effectively competes with human rIL-2 for binding to thymocyte receptors. Two types of nonapeptide receptors were revealed: those with Kd1 = 1.
View Article and Find Full Text PDFCellular, humoral, and genetic mechanisms of induction of T-effectors of the transplant vs. host reaction (THR) have been studied in two-cell culture of phagocyte mononuclears and thymocytes. A direct physical contact and similarity of H-2K locus of major histocompatibility complex between the cooperating cells in culture is required for successful induction of T-effectors of THR.
View Article and Find Full Text PDFZh Mikrobiol Epidemiol Immunobiol
April 1991
The dependence of the functional activity of the peritoneal macrophages of mice immunized with Francisella tularensis vaccine strain on the presence of T-cells in the culture has been studied. The elimination of "immune" macrophages and sensitized T-lymphocytes by means of anti-Thy-1-2-serum has been shown to lead to a sharp decrease in both ingestive and digestive functions of the phagocytic mononuclears of peritoneal exudate to the level of the activity of macrophages isolated from intact animals.
View Article and Find Full Text PDFThe octapeptide corresponding to human interferon-alpha 2 (Hu IFN-alpha 2) sequence 131-138 has high affinity to murine thymocyte receptors (Kd = 4.2 x 10(-12) M, about 700 receptors per cell). The peptide receptor binding is inhibited by both Hu rIFN-alpha 2 (Ki = 8.
View Article and Find Full Text PDFZh Mikrobiol Epidemiol Immunobiol
December 1990
The immunomodulating properties of highly purified staphylococcal protein A and its analog obtained by gene engineering techniques have been compared with those of commercial preparations. The comparison has shown that the differences observed in this investigation may be explained by the presence of admixtures of staphylococcal nature in commercial preparations. The preparations of highly purified staphylococcal and recombinant protein A stimulate humoral immune response and the processes of phagocytosis and do not show mitogenic activity with respect to T cells.
View Article and Find Full Text PDFThe influence of human recombinant alpha-interferon (reaferon) on cell-mediated and humoral immune response has been studied. Experimental facts on the blast transformation of lymphocytes, humoral immune response and the reaction of delayed hypersensitivity are presented. The study has shown that reaferon possesses the main immunoregulatory properties, characteristic of natural human leukocytic alpha-interferon.
View Article and Find Full Text PDFZh Mikrobiol Epidemiol Immunobiol
July 1989
The influence of human recombinant alpha 2-interferon (reaferon) on the parameters of the phagocytic activity of mouse peritoneal macrophages (migration, spreading, adhesion and absorption of corpuscular antigen) has been studied. Reaferon in doses of 5-5 X 10(2) I. U.
View Article and Find Full Text PDFThe data on changes in expression of H-2 complex and Thy-1 antigens on cell surface of thymocytes resulting from their incubation with peritoneal macrophages has been presented. The process of joint cultivation of thymocytes with macrophages leads to significant decrease in number of cells with Thy-2-antigen and increase in that with H-2 complex antigens. An increase in H-2K+ cells in experimental thymocytes as compared to control ones was observed.
View Article and Find Full Text PDFWhen the macrophages and thymocytes are jointly incubated, mononuclear phagocytes produce a humoral factor which induces the functional transformation of thymocytes promoting their differentiation into more mature cells. The factor was provisionally called FIT (factor of induction of thymocytes). The data are provided on adsorption of the factor under study on cells of different organ origin.
View Article and Find Full Text PDFData are provided on specific secretion by macrophages of a factor inducing the functional differentiation of thymocytes. The contact of mononuclear phagocytes with lymphocytes of T-cell type induces the formation of this transmitter. Interaction of macrophages with B-cells does not lead to the secretion of this monokine.
View Article and Find Full Text PDFThe data are presented on the influence of antisera to different products of the histocompatibility gene complex on the interaction between macrophages and thymocytes during the formation of T-cell GVH effectors. The intensity of the local GVH reaction was evaluated by the index of the lymph nodes enlargement. The close physical contact between cells was necessary for the induction of T-effectors GVH.
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