Elevated serum cytidinedeaminase activity detects in many complications of pregnancy. At the same time, chronic viral hepatitis C may be associated with decreased activity of cytidine deaminase. Aim of the research was to find out whether the diagnostic value of cytidine deaminase activity retained in pregnant women with chronic HCV infection. Cytidine deaminase activity (CDA) was measured using indophenol colorimetric test in 138 pregnant with chronic hepatitis C infection, 40 nonpregnant with chronic hepatitis C and 56 healthy women. CDA lowest activity was observed in non-pregnant patients with hepatitis C and was 4.51 ± 0.85 U. Despite the hepatitis C virus persistence, pregnancy accompanied by an increase in cytidine deaminase activity compared to non-pregnant (6.47 ± 0.51 U versus 5.75 ± 0.51 U). Solitary persistence of hepatitis C is associated with a decrease in cytidine deaminase activity. Pregnant women with chronic hepatitis C was a certain increase in the activity of cytidine deaminase in comparison to non-pregnant, both healthy and infected. Increasing serum cytidine deaminase is associated with an increase in hepatic transaminases, alkaline phosphatase, and the absolute number of leukocytes. Cytidine deaminase activity has the potential to be the summarizing indicator for the severity of clinical state in pregnant women with chronic hepatitis C infection.
- 1. Павлов, К. И. Цитидиндезаминаза и аденозиндезамина-за – ферменты, контролирующие интенсивность и специфичность иммунного ответа: стандартизация активности в норме и диагностическая значимость при заболеваниях / К. И Павлов, Л. П. Титов, А. Е. Гончаров, О. А. Янович, С. В. Жаворонок // Медицинский журнал. – 2014. – № 4. – С. 98–103.
- 2. APOBEC3G: an intracellular centurion/ Ya-Lin Chiu, C. G. Warner // Phil. Trans. R. Soc. B. – 2004. – Vol. 364. – P. 689–700.3. Serum deoxycytidylate deaminase as an index of high-risk pregnancy / D. D. Jones, G. F. Williams // Br J. ObstetGynaecol. – 1982. – Vol. 89 (4). – P. 309–13.
- 4. Cytidine Deaminase activity in breast cancer / H. Abdulsamie et al. // Medical Journal of Babylon. – 2004. – Vol. 1. – P. 32–39.
- 5. The Comprehensive Enzyme Information System BRENDA / [Electronic resource] – 2015. – Mode of access: (http:// www.brenda-enzymes.org/). – Date of access: 30.03.2015.
- 6. Methods of Enzymatic Analysis. Bergmeyer, H. U. (ed.). – Weinheim: VerlagChemie, 1984. – P. 315–323.
- 7. Re-evaluation of the colorimetric assay for cytidine deaminase activity / T. Okamura, K. Kigasava // PrenatDiagn. – 1994. – 14(3). – С. 213–218.
- 8. Deoxycytidylate deaminase in pregnancy / L. TargettAdams L., D. D. Jones, G. F. Williams // Clin. Chim. Acta. – 1975. – Vol. 16. – P. 377–82.
- 9. Individual Cytidine Deaminase and Adenosine Deaminase Variations in a Highly Immunologically Homogenous Group of Healthy Belarussian Adults / Leonid P. Titov, K. I. Pavlov, Andrei Y. Hancharou, Lawrence M. DuBuske // Journal of Allergy and Clinical Immunology 02/2015; 135(2): AB16. DOI:10.1016/j. jaci.2014.12.984