منابع مشابه
Caffeine effect on adenosine deaminase catalysis: A new look at the effect of caffeine on adenosine deaminase activity
The effect of physiological concentrations of caffeine (purified from Persian tea) on adenosine deaminase (ADA) activity at physiological and pathological concentrations of adenosine (as substrate) in 50 mM Tris-HCl buffer (pH 7.3) at 37°C was investigated, using UV-VIS spectroscopy. ADA exhibited a bi-phasic activity behavior and both phases showed positive cooperativities indicating adenosine...
متن کاملCaffeine effect on adenosine deaminase catalysis: A new look at the effect of caffeine on adenosine deaminase activity
The effect of physiological concentrations of caffeine (purified from Persian tea) on adenosine deaminase (ADA) activity at physiological and pathological concentrations of adenosine (as substrate) in 50 mM Tris-HCl buffer (pH 7.3) at 37°C was investigated, using UV-VIS spectroscopy. ADA exhibited a bi-phasic activity behavior and both phases showed positive cooperativities indicating adenosine...
متن کاملAdenosine deaminase activity in tuberculous pericarditis.
Adenosine deaminase (Enzymes Commission No 3.5.4.4) is an enzyme capable of catalysing the catabolism of purine bases. Previous studies have shown that this enzyme may be useful in recognition of a tuberculous aetiology of pleural, peritoneal, or meningeal effusions.-̀ s Adenosine deaminase assay is a simple, sensitive, and specific diagnostic procedure in these conditions but its use in diagnos...
متن کاملAdenosine deaminase activity in rheumatoid pleural effusion.
The activity of adenosine deaminase was studied in nine cases of rheumatoid pleural effusion, showing an increase in enzyme activity in all. Rheumatoid arthritis seems unique, however, as it cannot be differentiated from pleural tuberculosis on the basis of this test. Selective increase of adenosine deaminase in both conditions is attributed to stimulation of T lymphocytes in the pleural fluid.
متن کاملAdenosine Deaminase Activity in Chronic Lymphocytic Leukemia
A B S T R A C T The level, phenotypes, and isozyme distribution of adenosine deaminase (ADA) were determined in lymphocytes from patients with chronic lymphocytic leukemia (CLL). The ADA level in lymphocytes from patients with untreated CLL was consistently lower than in lymphocytes from normal subjects. No significant differences were found in the phenotype or isozyme distribution. In untreate...
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ژورنال
عنوان ژورنال: British Journal of Cancer
سال: 1975
ISSN: 0007-0920,1532-1827
DOI: 10.1038/bjc.1975.95