Salivary analysis of oral cancer biomarkers

T. Shpitzer, Y. Hamzany, G. Bahar, R. Feinmesser, D. Savulescu, I. Borovoi, M. Gavish, R. M. Nagler

Research output: Contribution to journalArticlepeer-review

Abstract

Background: Oral cancer is a common and lethal malignancy. Direct contact between saliva and the oral cancer lesion makes measurement of tumour markers in saliva an attractive alternative to serum testing. Methods: We tested 19 tongue cancer patients, measuring the levels of 8 salivary markers related to oxidative stress, DNA repair, carcinogenesis, metastasis and cellular proliferation and death. Results: Five markers increased in cancer patients by 39-246%: carbonyls, lactate dehydrogenase, metalloproteinase-9 (MMP-9), Ki67 and Cyclin D1 (CycD1) (P≤0.01). Three markers decreased by 16-29%: 8-oxoguanine DNA glycosylase, phosphorylated-Src and mammary serine protease inhibitor (Maspin) (P≤0.01). Increase in salivary carbonyls was profound (by 246%, P=0.012); alterations in CycD1 (87% increase, P=0.000006) and Maspin (29% decrease, P=0.007) were especially significant. Sensitivity values of these eight analysed markers ranged from 58% to 100%; specificity values ranged from 42% to 100%. Both values were especially high for the CycD1 and Maspin markers, 100% for each value of each marker. These were also high for carbonyls, 90% and 80%, respectively, and for MMP-9, 100% and 79%, respectively. Conclusion: The significance of each salivary alteration is discussed. As all alterations correlated with each other, they may belong to a single carcinogenetic network. Cancer-related changes in salivary tumour markers may be used as a diagnostic tool for diagnosis, prognosis and post-operative monitoring.

Original languageEnglish
Pages (from-to)1194-1198
Number of pages5
JournalBritish Journal of Cancer
Volume101
Issue number7
DOIs
StatePublished - 2009

Keywords

  • Biomarkers
  • Oral cancer
  • Saliva

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