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Gout medicine that lasts remedial effect longer
Introducing innovative protein medicine combined with unharmful albumin
Professor Inchan Gwon of Gwangju Institute of Science and technology's Biomolecule Engineering & Bio Convergence Materials Research Institute 

New technology that increased durability of uric acid catabolic enzyme
Gout is the result of the excessive accumulation of uric acid in the body. It crystalized onto tendon to cause inflammation, renal disorder, stone, cardiac disorder, diabetes and high blood pressure. The reason the amount of uric acid increases more than the standard is oversupplied purine that creates uric acid through decomposing. To solve this problem, U.S. FDA allowed Urate Oxidase to be used for curing gout. The uric acid catabolic enzyme changes uric acid to unharmful substance. But the enzyme gained from nature gets decomposed quickly which is a problem to maintain the medicinal effect longer. A medicine combined with the enzyme and polyethylene glycol was developed to solve the problem but the tolerance and weak medicinal effect have been reported.  

But the hope came from Biomolecule Engineering & Bio Convergence Materials Research Institute. The leader of the institute Gwon developed the medicine that lasts longer in the body and is attracting many people from academic circles. Gwon says "protein medicines are more effective than synthetic medicines with less side effect. But it was problem that it gets removed quickly and you need to keep taking it in which increases the treatment cost. So we combined albumin gained from human body with the enzyme instead of using synthetic high molecule to solve the problem." Gwon's paper was published on Journal of Controlled Release on 15 April.

Contribution to improving the function of protein medicines
Albumin is a kind of protein widely spread in cells and body fluid, abundant in the blood and stays there for a long time. But if it is carelessly combined with the enzyme through the existing technologies, it can reduce its medicinal effectiveness. Gwon says "amino acid has an effector which is non existent in nature. What we did was that we used the technology which brings amino acid in a certain position to combine it with albumin. We confirmed that the medicinal effect was not at all reduced when albumin is combined with amino acid and it stays in the body for 7 times longer than the existing medicines after animal tests."

The institute has been exerting its effort to treat diseases by using protein medicine and to realize eco-friendly medicinal conversion process. They researched on combining methods by using protein medicine and bio catalyst and they could be able to develop albumin-uric acid catabolic enzyme as a result. 

Gwon added "our achievement is expected not only to be used for curing gout but also to be applied to improve various protein medicines. We still need clinical test in order to commercialize it but we are positive that it won't have any problems to be on the market." 
 


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