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  • Title: Lysosomal hydrolases in serum from human immunodeficiency virus-infected patients.
    Author: Costanzi E, Beccari T, Francisci D, Orlacchio A, Tassi C.
    Journal: Clin Chim Acta; 1996 Nov 15; 255(1):57-65. PubMed ID: 8930413.
    Abstract:
    beta-Hexosaminidase isoenzymes were separated by DEAE-cellulose chromatography in the serum of 23 patients infected with human immunodeficiency virus at different stage of the disease. Forms corresponding to hexosaminidase B, I and A were present in pathological sera. There is an increase in the percentage of hexosaminidase I in pathological sera, that could be used as an additional marker to monitor the clinical stage of the disease. Furthermore, total activities of some lysosomal enzymes were determined in these sera. Activities of beta-hexosaminidase, determined with 4-methylumbelliferyl-beta-N-acetylglucopyranoside substrate, alpha-mannosidase and beta-mannosidase were significantly higher in the serum of patients at the C3 stage of disease than in controls. No significant differences were observed in the activity of beta-hexosaminidase, determined with 4-methylumbelliferyl-beta-N-acetylglucopyranoside-6-sulphate substrate, beta-glucuronidase and beta-galactosidase.
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