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Biochem Mol Biol Int. 1996 Aug;39(6):1147-56.

Purification of pepsinogens from human urine and electrophoretic analysis by caseogram print.

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Department of Biochemistry, Faculty of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Japan.


Pepsinogen (PG) A and C were purified from human urine, and analyzed by a highly sensitive detection method, "caseogram print". Purification was achieved by a series of conventional chromatographies and FPLC. A relatively large amount (13.2 mg) of PGA was purified from about 20 liters of urine. Purified PGA was separated by a Mono-Q column into each of its isozymogens. The elution order (PGA-5, 4+3, 2) corresponded to the order of electrophoretic migration. Although the concentration of urinary PGC was very low, a trace amount was purified and visualized by electrophoresis. The urinary and mucosal PGCs migrated at the same position, and urinary PGC was detected as two isozymogens similarly to mucosal PGC, suggesting that urinary and mucosal PGCs may be essentially identical.

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