title: Reliability of alpha-naphthyl-acetate esterase staining of blood smears for the enumeration of circulating human T lymphocytes.
abstract: Cytocentrifuged preparations of glutaraldehyde-fixed E rosettes were stained for acid alpha-naphthyl-acetate esterase activity (ANAE). On average, 84% of the rosette-forming cells (E+) also stained positively for the enzyme activity (A+). ANAE staining of blood smears of thirty-three healthy controls was compared to E rosetting by a conventional method. A+ and E+ fractional values are highly significantly correlated; the regression of E+ on A+ is E+ = 0.805.A+ + 16.8 (P < 10(-6)). Since the correlation between E+ and A+ cells is both statistically and cytologically significant, we propose blood smear ANAE staining as a simple and convenient method to enumerate circulating T lymphocytes in clinical practice.
mesh_terms: D000293:Adolescent; D000328:Adult; D002265:Carboxylic Ester Hydrolases / Q000378:metabolism*; D002648:Child; D006651:Histocytochemistry; D006801:Humans; D007958:Leukocyte Count / Q000379:methods; D009283:Naphthol AS D Esterase / Q000378:metabolism*; D012397:Rosette Formation; D013601:T-Lymphocytes / Q000201:enzymology*
chemical_list: D009283:Naphthol AS D Esterase; D002265:Carboxylic Ester Hydrolases