Phenylalanine ammonia-lyase immobilized in semipermeable microcapsules for enzyme replacement in phenylketonuria.

Abstract:

:Phenylalanine ammonia-lyase immobilized within semipermeable microcapsules has an assayed enzyme activity which is 20% +/- 4% of the enzyme in free solution. The Km for the immobilized enzyme remained the same as that of the free enzyme. The pH optimum also remained unchanged at pH 8.5 +/- 1.0. At the lower pH range, enzyme activity is higher for the immobilized enzyme. Daily oral administration of microencapsulated phenylalanine ammonia-lyase to phenylketonuric rats decreased the systemic phenylalanine level by 35 +/- 8% in 2 days (P less than 0.05) and by 75 +/- 8% in 7 days (P less than 0.001).

journal_name

FEBS Lett

journal_title

FEBS letters

authors

Bourget L,Chang TM

doi

10.1016/0014-5793(85)80219-2

subject

Has Abstract

pub_date

1985-01-21 00:00:00

pages

5-8

issue

1

eissn

0014-5793

issn

1873-3468

pii

0014-5793(85)80219-2

journal_volume

180

pub_type

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