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  • Title: Glial extracellular matrix modulates gamma-glutamyl transpeptidase activity in cultured bovine brain capillary and bovine aortic endothelial cells.
    Author: Mizuguchi H, Hashioka Y, Fujii A, Utoguchi N, Kubo K, Nakagawa S, Baba A, Mayumi T.
    Journal: Brain Res; 1994 Jul 18; 651(1-2):155-9. PubMed ID: 7922563.
    Abstract:
    Glial extracellular matrix (ECM) elevated gamma-glutamyl transpeptidase (gamma-GTP) activity in cultured bovine brain capillary and aortic endothelial cells (BBCEC, BAEC). In particular, the ECM of glial cells cultured with the conditioned medium of BAEC (BAEC CM) dramatically elevated gamma-GTP activity in BBCEC and BAEC. The ECM of glial cells cultured with BBCEC CM also had a marked effect. The ECM of 3T3 cells cultured with BAEC CM, and the ECM of glial cells cultured with 3T3 CM had no effect. Glial CM had no effect on gamma-GTP activity in BBCEC and BAEC. These findings indicate that gamma-GTP activity in endothelial cells (EC) is modulated by glial ECM, and that the factor of ECM that affects gamma-GTP activity in EC arises from the interaction between glial cells and EC.
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