Tonin and Kallikrein in the Brain of Transgenic Rat Line Expressing Human Tissue Kallikrein
Author(s) -
Eliane Sa Lopes Lomez,
Ronaldo C. Araújo,
Michael Bäder,
João Bosco Pesquero,
Jorge L. Pesquero
Publication year - 2002
Publication title -
hypertension
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.986
H-Index - 265
eISSN - 1524-4563
pISSN - 0194-911X
DOI - 10.1161/hy0202.104264
Subject(s) - kallikrein , transgene , genetically modified mouse , biology , medicine , endocrinology , gene , microbiology and biotechnology , enzyme , biochemistry
A transgenic rat line harboring the human tissue kallikrein gene was investigated for expression and activity of tonin and kallikrein in different regions of the brain. The introduction of the transgene into the rat genome produced a significant augmentation of the expression levels and activity of rat tissue kallikrein. The possibility that human kallikrein does not hydrolyze the rat substrate is probably responsible for the augmented expression of the rat enzyme. On the other hand, although expression of tonin was significantly reduced, tonin activity was not altered in most brain structures, except for cerebellum and neurohypophysis.
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