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Elevation of serum thymidine kinase 1 in a bacterial infection: Canine pyometra
Institutionen för anatomi, fysiologi och biokemi -avdelningen för biokemi - (slu).
Institutionen för anatomi, fysiologi och biokemi -avdelningen för biokemi - (slu).
Institutionen för anatomi, fysiologi och biokemi -avdelningen för biokemi - (slu).
2013 (English)In: Theriogenology, ISSN 0093-691X, E-ISSN 1879-3231, Vol. 79, no 1, 17-23 p.Article in journal (Refereed) Published
Abstract [en]

Pyometra is a bacterial infection of the uterus that is common in dogs and is potentially life-threatening if delayed in diagnosis and/or treatment. Thymidine kinase 1 (TK1) is a cytosolic enzyme involved in DNA precursor synthesis, and it is also present in serum from patients with malignant diseases. TK1 has been used as a cell proliferation biomarker for many years in human medicine and recently in dogs. However, little is known regarding serum TK1 levels in individuals with bacterial infection. The objective of this study was to determine the activity of serum TK1 in dogs with pyometra and compare it with hematologic and biochemical parameters, e.g., acute phase proteins and inflammatory mediators such as C-reactive protein and Prostaglandin F-2 alpha. Serum and plasma TK1 activity of 40 healthy female dogs and 54 dogs with pyometra were analyzed using an optimized [H-3]-thymidine phosphorylation assay. TK1 activities in serum or plasma were significantly higher in dogs with pyometra as compared with healthy female dogs (mean +/- SD: 4.0 +/- 7.3 pmol/min/mL in the pyometra group and 1.07 +/- 0.34 pmol/min/mL in healthy control group). However, there was no difference in TK1 activity between systemic inflammatory response syndrome (SIRS) positive (n = 38) and SIRS negative (n = 16) pyometra cases. Furthermore, the plasma TK1 activity decreased in six and increased in one pyometra patients (n = 10), 24 h after ovariohysterectomy. No significant correlations (P > 0.05) were found between TK1 activity and hematological or other biochemical parameters. In conclusion, the TK1 activity was significantly elevated in dogs with pyometra. Further studies are needed to evaluate the mechanism and role of serum TK1 activity in bacterial infections and its possible diagnostic or prognostic value.

Place, publisher, year, edition, pages
2013. Vol. 79, no 1, 17-23 p.
Keyword [en]
Infection, Pyometra, TK1 activity, Biomarker, Dog TK1
National Category
Natural Sciences
URN: urn:nbn:se:uu:diva-193018DOI: 10.1016/j.theriogenology.2012.09.002ISI: 000312607400003OAI: oai:DiVA.org:uu-193018DiVA: diva2:602924
Available from: 2013-02-04 Created: 2013-01-28 Last updated: 2014-01-10Bibliographically approved

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Sharif, Hanan MohamedWang, LiyaEriksson, Staffan
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