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Elevated serum and spleen angiotensin converting enzyme and serum lysozyme in Gaucher's disease
Abstract:
In adult chronic non-neuronopathic (Type 1) Gaucher's disease significant (p less than 0.001) elevations of angiotensin converting enzyme in serum (93.3 +/- 14.8 nmol/min/ml; number elevated, 8/11; normal control 32.2 +/- 1.30, n = 58) and spleen (5.62 +/- 0.35 nmol/min/mg protein, n = 2; control, 0.431 +/- 0.101, n = 4) and serum lysozyme (15.6 +/- 3.37 mug/ml; number elevated, 4/5) were observed. The KM for hippuryl-L-histidyl-L-leucine of Gaucher (1.31 mM) and normal (1.23 mM) serum angiotensin converting enzyme were similar. The increased angiotensin converting enzyme (ACE) in Gaucher's disease may be related to the genetic defect resulting in increased ACE synthesis in Gaucher cells, or perhaps generally, while high lysozyme may reflect an increased body mass of reticuloendothelial cells. These enzyme elevations may be of use in suggesting the possible presence of Gaucher's disease and perhaps in assessing the magnitude of pathologic involvement.
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