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Myeloperoxidase (MPO) is a peroxidase enzyme that in humans is encoded by the MPO gene on chromosome 17. [5] MPO is most abundantly expressed in neutrophils (a subtype of white blood cells ), and produces hypohalous acids to carry out their antimicrobial activity, including hypochlorous acid, the sodium salt of which is the chemical in bleach.
MPO deficiency is broken down into two categories: primary/congenital and secondary/acquired. [4] Primary MPO deficiency is an autosomal recessive genetic disorder, which is caused by mutations in the myeloperoxidase gene on chromosome 17q23. [5] There are several different known mutations of this gene which all lead to myeloperoxidase ...
Immunofluorescence pattern of SS-A and SS-B antibodies. Produced using serum from a patient on HEp-20-10 cells with a FITC conjugate. Anti-SSA autoantibodies (anti–Sjögren's-syndrome-related antigen A autoantibodies, also called anti-Ro, or similar names including anti-SSA/Ro, anti-Ro/SSA, anti–SS-A/Ro, and anti-Ro/SS-A) are a type of anti-nuclear autoantibodies that are associated with ...
c-ANCAs, or PR3-ANCA, or antineutrophil cytoplasmic antibodies, are a type of autoantibody, an antibody produced by the body that acts against one of its own proteins. These antibodies show a diffusely granular, cytoplasmic staining pattern under microscopy .
Anti-Ro antibodies are also found less frequently in other disorders including autoimmune liver diseases, coeliac disease, autoimmune rheumatic diseases, cardiac neonatal lupus erythematosus and polymyositis. [19] [20] During pregnancy, anti-Ro antibodies can cross the placenta and cause heart block [21] [22] and neonatal lupus in babies. [23]
Conventional cytological examination had not revealed any neoplastic cells. Three monoclonal antibodies (anti-CEA, Ca 1 and HMFG-2) were used to search for malignant cells. Immunocytochemical labelling was performed on unstained smears, which had been stored at -20 °C up to 18 months.
Anti-transglutaminase antibodies (ATA) are autoantibodies against the transglutaminase protein. Detection is considered abnormal, and may indicate one of several conditions . Antibodies serve an important role in the immune system by detecting cells and substances that the rest of the immune system then eliminates.
Anti-centromere antibodies (ACAs; often styled solid, anticentromere) are autoantibodies specific to centromere and kinetochore function. They occur in some autoimmune diseases , frequently in limited systemic scleroderma (formerly called CREST syndrome ), and occasionally in the diffuse form of scleroderma .