The correlation between a chronic inflammatory marker Tartrate-resistant acid phosphatase 5a with cancer cachexia.

J BUON 2015 Jan-Feb;20(1):325-31

Division of Hematology/Oncology, Department of Medicine, Tri-Service General Hospital, Taipei.

Purpose: The mechanism of cancer cachexia remains unclear and inflammatory cytokines may play a role in its development. Interleukin-6 (IL-6), C-reactive protein (CRP) and tumor necrosis factor-α (TNFα) are known to be associated with cancer cachexia. Tartrate-resistant acid phosphatase 5a (TRACP5a) is proposed to be related to chronic inflammation. In this study we hypothesize that TRACP5a is a chronic inflammatory marker that is correlated with cancer cachexia.

Methods: Fifty-five cancer patients with and without cancer cachexia were enrolled from January 2009 to December 2012. Body mass index (BMI) was measured and serum total cholesterol, triglycerides and albumin were examined to evaluate the nutritional status. IL-6, CRP and TRACP5a protein activity were evaluated.

Results: Inflammatory markers including IL-6, and CRP were significantly elevated in patients with cancer cachexia (p=0.0075 and 0.0021, respectively). Patients with cachexia also had higher CRP/albumin ratio (p=0.0265). TRACP5a activity, TRACP5a protein and their combinations with albumin were increased in the cancer cachexia groups but without significant difference. There were good correlations between IL-6, CRP, and BMI. Patients with higher TRACP5a activity had shorter survival (p=0.004).

Conclusion: TRACP5a may be a promising chronic inflammatory marker and may play a prognostic role in cancer cachexia. Further large-scale prospective studies are warranted to confirm its role in the cancer cachexia process.

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April 2015
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