Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: EC:1.11.1.7 (peroxidase)
 65,474 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Isopaque-Ficoll separated mononuclear cell suspensions from peripheral blood of patients with dermatitis herpetiformis (DH) and healthy controls were investigated by means of a rosette assay for Fc-receptor-bearing leukocytes (EA-RFC), peroxidase staining for monocytes (Pox) and a plaque formation assay (PFC) as well as a 51Cr release assay for cell-mediated cytotoxicity. The cell suspensions were investigated both before and after fractionation on nylon fibre columns. In the patients the mean percentage of PFC in unfractionated cell suspensions was significantly higher than in the controls. In fractionated cell suspensions both the mean percentage of EA-RFC and the mean cytotoxicity index in the 51Cr release assay were significantly lower than in the controls. There were no differences in the percentages of PFC- and Pox-positive cells in fractionated cell suspensions. The results suggest a numerical defect of circulating Fc-receptor-bearing lymphocytes as estimated both by the rosette assay and the 51Cr release assay. These data may reflect a pathogenetic role of these lymphocytes in DH.
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PMID:Studies on Fc-receptor-bearing mononuclear leukocytes from peripheral blood of patients with dermatitis herpetiformis. 8 75

Nucleated cells obtained from normal human peripheral blood on a layer of Ficoll Isopaque are identified according to the combination of various assays: phagocytosis, endogenous peroxidase, naphtol AS-D esterase, immunofluorescence (IF) performed at 4 degrees C and after incubation at 37 degrees C. The Ig bearing lymphocytes are evaluated with IF, while errors due to other nucleated cells may be evaluated by phagocytic and enzymatic capacities. As the presence of immunoglobulins (Ig) on the cell surface doses not prove its B lymphocytic nature, both immunofluorescence (IF) and endogenous peroxidase are usefully performed together. Exposure of the cells to 37 degrees C during half an hour may enable us to avoid to consider monocytes and lymphocytes with cell bound Ig. Thus con accurately be evaluated the percentages of lymphocytic populations in practice of immunological tests.
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PMID:[Combined immunological and cytochemical identification of nucleated cells in normal human peripheral blood]. 33 Dec 48

Blood monocytes from healthy volunteers were isolated by Ficoll-Isopaque centrifugation and cultured (together with lymphocytes) in medium 199 with 20% heat-inactivated newborn calf serum in a Teflon culture bag. Quantifiable data on survival showed that up to 21 days of culture, approximately 40% of the initial number of monocytes were still viable. Such cultures could be maintained for more than 8 weeks without refeeding. The monocytes exhibited the morphology of macrophages after 5-7 days of culture, and increased in size during culture. Less than 1% of the cells became giant cells even after long culture periods. Almost all cultured monocytes were positive for alpha-naphthyl butyrate esterase, whereas the peroxidase-positive granules disappeared during the first week of culture. After long culture times increasing amounts of lysozyme and angiotensin-converting enzyme were detected in the culture supernatants. Phagocytosis of staphylococci did not decrease appreciably during culture, and the same holds for intracellular killing of these bacteria. Chemotactic activity decreased during culture, whereas the chemokinetic response of the monocytes persisted.
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PMID:Characteristics of human monocytes cultured in the Teflon culture bag. 675 82