hemolysis/protease

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Inhibitory effects of FUT-175, a new synthetic protease inhibitor, on intravascular hemolysis by human serum in mice.

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Effects of FUT-175, a new protease inhibitor, on intravascular hemolysis of mouse erythrocytes caused by intravenous injection of human serum was studied in mice. In in vitro experiments, unsensitized erythrocytes obtained from various species of animals were lysed with sera in EGTA-GVB-Mg++. After

Hemolysis in stored red blood cell concentrates: modulation by haptoglobin or ulinastatin, a protease inhibitor.

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OBJECTIVE Polymorphonuclear leukocyte elastase may injure various tissues. The release of polymorphonuclear leukocyte elastase induced by various stimuli was reported to be inhibited by a protease inhibitor, ulinastatin. In stored blood preparations, polymorphonuclear leukocyte elastase increases

PCBs increase molecular-related activities (lysozyme, antibacterial, hemolysis, proteases) but inhibit macrophage-related functions (phagocytosis, wound healing) in earthworms.

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Both humoral and cellular immunodefense responses of the earthworms, Eisenia fetida andrei, Eisenia hortensis, and Lumbricus terrestris, have been compared after exposure to the PCB Aroclor 1254. Responses mediated by free factors, detected by in vitro assays for lysozyme, hemolysis, and proteases,

Clinical and In Vitro Evidence That Subclinical Hemolysis Contributes to LVAD Thrombosis.

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BACKGROUND Recent data suggest that hemolysis contributes to left ventricular assist device (LVAD) thrombosis, but the mechanism is unknown. In a clinical study, we measured plasma free hemoglobin (pfHgb) and the incidence of LVAD thrombosis. In an in vitro study, we examined biophysical

Cloning and sequence analysis of a chymotrypsinlike protease from Treponema denticola.

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A clone expressing a Treponema denticola chymotrypsinlike protease from recombinant plasmid pSA2 was identified in a genomic library of T. denticola ATCC 35405. Nucleotide sequencing of the insert identified an open reading frame, designated the prtB gene, which codes for the protease. Two potential

Interference in coagulation testing: focus on spurious hemolysis, icterus, and lipemia.

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The chance that errors might jeopardize the quality of testing is inherently present throughout the total testing process, especially in the preanalytical phase. In the coagulation laboratory, as well as in other areas of diagnostic testing, spurious hemolysis, icteria, and lipemia in test samples

Hypervalent organotellurium compounds as inhibitors of P. falciparum calcium-dependent cysteine proteases.

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Hypervalent organotellurium compounds (organotelluranes) have shown several promising applications, including their use as potent and selective cysteine protease inhibitors and antiprotozoal agents. Here, we report the antimalarial activities of three organotellurane derivatives (RF05, RF07 and

Purification and characterization of a novel extracellular protease from Bacillus cereus KCTC 3674.

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Bacillus cereus KCTC 3674 excretes several kinds of extracellular proteases into the growth medium. Two proteases with molecular masses of approximately 36-kDa and 38-kDa, as shown by SDS-PAGE, were purified from the culture broth. The 38-kDa protease was purified from B. cereus cultivated at 37

Natural anti-proteases in rainbow trout, Oncorhynchus mykiss and brook charr, Salvelinus fontinalis and the in vitro neutralization of fish alpha 2-macroglobulin by the metalloprotease from the pathogenic haemoflagellate, Cryptobia salmositica.

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Natural anti-proteases (alpha 1-protease inhibitor (alpha 1-PI; alpha 1-antitrypsin) and alpha 2-macroglobulin (alpha 2-M)) were found in the blood of rainbow trout, Oncorhynchus mykiss and brook charr, Salvelinus fontinalis. The alpha 2-M inhibited Cryptobia salmositica proteases and was

Mechanism of interference by haemolysis in the cardiac troponin T immunoassay.

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BACKGROUND The cardiac troponins have been shown to be sensitive and specific biochemical markers of myocardial infarction and highly prognostic for future adverse events in patients with acute coronary syndromes. There have been reports suggesting that haemolysis causes a negative interference in

Purification of a Ca2+-activated protease from rat erythrocytes and its possible effect on pyruvate kinase in vivo.

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A Ca2+-activated protease with [32P]phosphopyruvate kinase as substrate was purified to about 50% from rat erythrocytes. The purification involved chromatography on Sepharose/Sephadex gels, DEAE-cellulose and (NH4)2SO4 precipitation. The protease required 3.3 mM Ca2+ for full activity. When pyruvate

Evidence for metal inhibition of tumour membrane-bound neutral protease and the control of tumour-induced target cell cytolysis.

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Previous studies have characterized the enzymatic properties and inhibition of a trypsin-like neutral protease on the surface of Ehrlich ascites cells by means of kinetic analysis. The present study links these kinetic studies with the recently reported role of a tumour-cell membrane-bound serine

Trypsin-resistant protease activation mutants of an influenza virus.

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New classes of mutants of influenza virus A/seal/Mass/1/80 are described in which the haemagglutinins (HA) have lost their protease cleavability by trypsin, but can be activated by elastase, chymotrypsin or thermolysin in different cell types. The same proteases that were required for activation of

Molecular analysis of an extracellular protease gene from Vibrio parahaemolyticus.

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The structural gene prtVp encoding the extracellular protease of Vibrio parahaemolyticus strain 93 was cloned in Escherichia coli and sequenced. The cloned DNA fragment contained a 1761 bp ORF encoding a 587 amino acid protein. The deduced polypeptide is composed of a 25 amino acid signal peptide

Bothrops snake venoms and their isolated toxins, an L-amino acid oxidase and a serine protease, modulate human complement system pathways.

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BACKGROUND Activation of the complement system plays an important role in the regulation of immune and inflammatory reactions, and contributes to inflammatory responses triggered by envenomation provoked by Bothrops snakes. The present study aimed to assess whether Bothrops jararacussu and Bothrops

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