Results 171 to 180 of about 792,617 (213)

Myeloperoxidase reduces the opsonizing activity of immunoglobulin G and complement component C3b

Biochimica et Biophysica Acta (BBA) - General Subjects, 1984
The effect of myeloperoxidase, hydrogen peroxide (H2O2) and a halide (Cl) on the opsonizing molecules in immunoglobulin G (IgG) and complement factor C3b was assayed. At concentrations of the enzyme (1 microgram/ml) that can be found in the extracellular fluid during inflammation, the myeloperoxidase-H2O2-Cl system inhibited the opsonizing effect of ...
B I, Coble, C, Dahlgren, J, Hed, O, Stendahl   +3 more
openaire   +2 more sources

Two different complement receptors on human lymphocytes. One specific for C3b and one specific for C3b inactivator-cleaved C3b.

The Journal of experimental medicine, 1973
IN THE PRESENT STUDY IT WAS SHOWN THAT NORMAL PERIPHERAL LYMPHOCYTES HAVE TWO DIFFERENT COMPLEMENT RECEPTORS: one for C3b (the immune adherence receptor) and one for C3b subsequent to its cleavage by C3b inactivator. The two receptors are not cross-reactive and were shown by tests with various antisera to be antigenically distinct.
G D, Ross, M J, Polley, E M, Rabellino, H M, Grey   +3 more
openaire   +1 more source

Inhibition of complement by covalent attachment of rosmarinic acid to activated C3b

Biochemical Pharmacology, 1999
Rosmarinic acid has been reported to inhibit complement activation in vivo as well as in vitro. Previous studies suggested that the inhibitory effect was due to inhibition of C3/C5 convertases, but inhibition of C3b attachment would yield the same results.
A, Sahu, N, Rawal, M K, Pangburn
openaire   +2 more sources

Complement receptors (C3b, C4b/C3d) unbalance on CLL lymphocytes.

Bollettino dell'Istituto sieroterapico milanese, 1977
A study of lymphocytes bearing C3b, C4b and C3d complement receptor (CRL) was performed on human peripheral blood from 16 healthy donors and 12 patients affected with Chronic Lymphatic Leukemia (CLL). In the latter group a clear rise of C3dCRL was demonstrated, when compared with immunoadherence receptors bearing lymphocytes.
B, Perussia, P, Casali, G, Joppolo, P, Borzini   +3 more
openaire   +1 more source

Structure of complement component C3b

Molecular Immunology, 2007
Bert J.C. Janssen, Agni Christodoulidou, Madan Katragadda, John D. Lambris, Piet Gros   +4 more
openaire   +1 more source

Complement C3b fixation in lupus erthematosus

Molecular Immunology, 1982
U. Huschka, P.K. Kohl, E.W. Rauterberg
openaire   +1 more source

Complement receptor binding of C3b-coated cells treated with C3b inactivator, beta 1H globulin and trypsin.

Journal of immunology (Baltimore, Md. : 1950), 1979
Treatment of 125I-C3b bound to EAC1423b with C3b inactivator (C3bINA) and beta 1H globulin (beta 1H) cleaved the alpha-chain of C3b into 65,000- and 42,000-dalton fragments, both of which remained disulfide-bonded to the intact beta-chain (C3bi). Subsequent treatment with trypsin (0.1 microgram/ml) released 125I into the supernatant and yielded cells ...
J R, Carlo, S, Ruddy, E J, Studer, D H, Conrad   +3 more
openaire   +1 more source

Integrative oncology: Addressing the global challenges of cancer prevention and treatment

Ca-A Cancer Journal for Clinicians, 2022
Jun J Mao,, Msce, Lorenzo Cohen, Karen M Mustian   +2 more
exaly  

Diversity of Sites for Measles Virus Binding and for Inactivation of Complement C3b and C4b on Membrane Cofactor Protein CD46 (*)

Journal of Biological Chemistry, 1995
K. Iwata, T. Seya, Y. Yanagi, J. Pesando, P. Johnson, M. Okabe, S. Ueda, H. Ariga, S. Nagasawa   +8 more
semanticscholar   +1 more source

Human complement (C3b) receptors defined by a mouse monoclonal antibody.

Immunology, 1982
The aim of the present study was to prepare a monoclonal antibody against human C3 receptors. The monoclonal antibody termed C3RTo5, which is characterized in this study, inhibited the ligand binding of C3b receptors of human erythrocytes, neutrophils and lymphocytes, but did not block the ligand binding of C3bi and C3d receptors.
Gerdes, J, Naiem, M, Mason, D Y, Stein, H   +3 more
openaire   +1 more source