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Abstract

Adenosine deaminase (ADA; Ec: 3.5.4.4), 5 ́-Nucleotidase(5 ́–NT; Ec: 3.1.3.5), and AMP –amino hydrolase (AMP –deaminase AMPDA; Ec: 3.5.4.6) activities were measured in sera of ovarian cancer patients before surgery, and after chemotherapy.The results indicated that ADA specific activity increased significantly (P<0.05), while 5 ́-NT and AMPDA specific activity decreased significantly (P<0.05) in ovarian cancer patients before surgery in comparison with those of their corresponding control women and benign tumors groups.When the activities of these enzymes were measured after chemotherapy, a significant decrease (P<0.05) in ADA activity, and a significant increase (P<0.05) in 5 ́-NT and AMPDA activities were found in comparison with those before surgery.

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