Rasburicase (trade names Elitek in the US and Fasturtec in the EU) is a medication that helps to clear uric acid from the blood. It is a recombinant version of urate oxidase, an enzyme that metabolizes uric acid to allantoin. Urate oxidase is known to be present in many mammals but does not naturally occur in humans. Rasburicase is produced by a genetically modified Saccharomyces cerevisiae strain. The complementary DNA (cDNA) coding for rasburicase was cloned from a strain of Aspergillus flavus.Rasburicase (Q00511) is a tetrameric protein with identical subunits. Each subunit is made up of a single 301 amino acid polypeptide chain with a molecular mass of about 34 kDa. The drug product is a sterile, white to off-white, lyophilized powder intended for intravenous administration following reconstitution with a diluent. Elitek (rasburicase) is supplied in 3 mL and 10 mL colorless, glass vials containing rasburicase at a concentration of 1.5 mg/mL after reconstitution.It is on the World Health Organizations List of Essential Medicines. Medical uses
Rasburicase is approved for use by the U.S. Food and Drug Administration (and European counterparts) for the prevention and treatment of tumor lysis syndrome (TLS) in people receiving chemotherapy for hematologic cancers such as leukemias and lymphomas. However, it is not clear if it results in important benefits such as decreased kidney problems or decreased risk of death as of 2017.It is being investigated for treating severely high blood levels of uric acid from other sources.
Enterocolitis  is an inflammation of the digestive tract, involving enteritis of the small intestine and colitis of the colon. It may be caused by various infections, with bacteria, viruses, fungi, parasites, or other causes. Common clinical manifestations of enterocolitis are frequent diarrheal defecations, with or without nausea, vomiting, abdominal pain, fever, chills, alteration of general condition. General manifestations are given by the dissemination of the infectious agent or its toxins throughout the body, or – most frequently – by significant losses of water and minerals, the consequence of diarrhea and vomiting. Cause
Among the causal agents of acute enterocolitis are:
bacteria: Salmonella, Shigella, Escherichia coli (E. coli), Campylobacter etc. viruses: enteroviruses, rotaviruses, Norovirus, adenoviruses
fungi: candidiasis, especially in immunosuppressed patients or who have previously received prolonged antibiotic treatment
parasites: Giardia lamblia (with high frequency of infestation in the population, but not always with clinical manifestations), Balantidium coli, Blastocystis homnis, Cryptosporidium (diarrhea in people with immunosuppression), Entamoeba histolytica (produces the amebian dysentery, common in tropical areas). Diagnosis
Types
Specific types of enterocolitis include:
necrotizing enterocolitis (most common in premature infants)
pseudomembranous enterocolitis (also called "Pseudomembranous colitis")

Treatment
Treatment depends on aetiology e.g. Antibiotics such as metronidazole for bacteria infection, antiviral drug therapy for viral infection and
anti-helminths for parasitic infections

See also
Gastroenteritis

References


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