A method of detecting serum antinuclear factor by the use of antiglobulin conjugated with horseradish peroxidase has been compared with a standard procedure using a fluorescent label. The horseradish peroxidase conjugate was evaluated by block titration against positive serum and by its performance as a test reagent for screening and titrating sera. It is concluded that the horse-radish peroxid...

background: systemic lupus erythematosus (sle) is a chronic autoimmune disease which is characterized by b-cell abnormality and auto-antibody generation. since bacterial infections are the most important causes of mortality in these patients, pneumococcal vaccination is recommended for children with sle. objective: to investigate humoral immunity and specific-antibody formation in response to a...

Acute leukemia with megakaryocytic differentiation has been an uncommonly recognized disorder. We used specific monoclonal and polyclonal antibody reagents (HP1 -1 D antibody and anti-factor VIII antibody. respectively) and an immunocytochemical staining technique to identify the megakaryocytic nature of the leukemic cells of 1 2 patients who presented with acute leukemia. The leukemic cells of...

A 96-well microtiter enzyme-linked immunosorbent assay (ELISA) for protein tyrosine kinases has been developed. This assay uses one of several substrates that are phosphorylated by tyrosine kinase, an antibody to phosphotyrosine, and a peroxidase-linked second antibody. Color development is monitored by a change in absorbance at 450 nm and is dependent upon time, enzyme, ATP, and substrate conc...

A method has been devised for the chromatographic resolution of glucosidic compounds, ginseng saponins, on polyethersulphone (PES) membrane. The method results in good resolution and quantitative immunoassay for ginsenoside Rb1 (G-Rb1), G-Rc, and G-Rd in crude extracts of various ginsengs. The newly established method is simpler and applies for quantitative analysis. Ginsenosides developed by a...

The technical complexity of determining the serovar of Chlamydia trachomatis strains has limited the use of serotyping in clinical and epidemiologic studies. We developed a simple method for rapidly serotyping isolates of C. trachomatis by using monoclonal antibodies in a dot-enzyme-linked immunosorbent assay (ELISA) system. Isolates were passaged three to six times in shell vial cultures to gr...

The seroprevalence of Anaplasma antibodies in wildlife (eland, blue wildebeest, kongoni, impala, Thomson's gazelle, Grant's gazelle, giraffe and plains zebra) and domestic animal (cattle, sheep and goat) populations was studied in wildlife/livestock interface areas of Kenya. Serum samples were analyzed by competitive inhibition enzyme-linked immunosorbent assay (CI-ELISA), using a recombinant a...

neonatal tetanus (nt) is a leading cause of neonatal mortality in many parts of the world. tetanus is a vaccine-preventable disease and is second only to measles worldwide as a cause of childhood mortality. in this study the various irnrnunoglobulin classes of anti-tetanus antibody in the sera of 105 iranian women of childbearing age (13-45 years) were titrated by enzyme linked immunosorbent as...

Selective cytotoxicity was accomplished in two antibodytumor cell models with antibody-glucose oxidase conjugates (Ab-GO) followed by treatment with horseradish peroxidase (HRP) and arsphenamine. The two cell models used were hapten [2,4,6-trinitrophenyl (TNP)]-substituted HeLa and HEp-2 cells with specifically purified antihapten (TNP) antibody and human colonie carcinoma cells (HT-29) with im...

OBJECTIVES To investigate whether discriminating the classic perinuclear antineutrophil cytoplasmic antibody (P-ANCA) pattern from atypical P-ANCA and uninterpretable patterns improves the diagnostic utility of ANCA testing. METHODS All ANCA requests (n = 3,544) referred to Pathology Queensland were analyzed prospectively over 4 months for P-ANCA pattern subtypes and myeloperoxidase (MPO)-ANC...