Abstract Background and Aims Uricase metabolizes uric acid into allantoin, a soluble compound that is easily excreted in the urine. Acute hyperuricemia associated with endothelial injury vasoconstriction, favoring acute renal failure. Preliminary studies show protective role of lowering cardiac patients. Method Pilot study conducted patients cardiorenal syndrome (>9 mg/dl). All received ...

Urate oxidase from Asperigillus flavus has been shown to be a model protein for studying the effects of polyethylene glycol (PEG) on the crystallization of large proteins. Extensive experimental studies based on small angle x-ray scattering [Vivares and Bonnete, J. Phys. Chem. B 108, 6498 (2004)] have determined the effects of salt, pH, temperature, and most importantly PEG on the crystallizati...

Antisera were prepared to urate oxidase derived from three microbial species, a yeast (Candida utilis), a mold (Aspergillus flavus), and a bacterium (Bacillus fastidious). The antisera inhibited enyme activity to a limited extent. Cross-reaction studies with preparations of the enzyme from these and other species indicated that the microbial enzyme exhibits a high degree of antigenic independen...

Renal dysfunction is a common comorbidity of multiple myeloma. However, tumor lysis syndrome is a rare cause of renal dysfunction in multiple myeloma. Elotuzumab is a newly US FDA-approved monoclonal antibody used in the treatment of refractory multiple myeloma. To our knowledge, elotuzumab has not been associated with a case of tumor lysis syndrome. We present the case of a patient who develop...

Lymphoproliferative disorder (LPD) is a severe adverse outcome of methotrexate (MTX) administration in patients with rheumatoid arthritis (RA) and systemic lupus erythematosus (SLE). The immunosuppression caused attributed to pathogenesis. Hence, discontinuation the treatment. Reports on spontaneous tumor lysis cessation MTX are rare. We report case female her 50s methotrexate-associated lympho...

Urate oxidase is an important enzyme with therapeutic and diagnostic applications. Rasburicase is a recombinant urate oxidase enzyme approved by FDA to use in the treatment of hyperuricemia conditions. Various hosts such as Saccharomyces cerevisiae, Hansenula polymorpha and Escherichia coli have been used to express the enzyme. Today, Pichia pastoris is considered as an important host for heter...

BACKGROUND Rasburicase (Fasturtec® or Elitek®, Sanofi-Aventis), the recombinant form of urate oxidase from Aspergillus flavus, is a therapeutic enzyme used to prevent or decrease the high levels of uric acid in blood that can occur as a result of chemotherapy. It is produced by Sanofi-Aventis and currently purified via several standard steps of chromatography. This work explores the feasibility...

Porcine liver uricase immobilized on alkylamine glass (pore diameter 55 nm) through glutaraldehyde coupling has been found useful in the determination of uri c acid in urine. The minimum detec.tion limit was 12.0 J.lg/0.1 ml sample and the recovery of added uric acid was 91 %. The coefficient of vari ation (CV) were <6.0% and <2.0% for within and between batch assay respectively. A good correla...