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Hyaluronan expression in differentiated thyroid carcinoma.

Jan Böhm1, Leo Niskanen, Raija Tammi

  • 1Department of Pathology and Forensic Medicine, University of Kuopio and Kuopio University Hospital, Kuopio, Finland.

The Journal of Pathology
|January 17, 2002
PubMed
Summary
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Hyaluronan (HA) in differentiated thyroid carcinoma (DTC) stroma, not cancer cells, indicates poorer prognosis. Strong stromal HA staining is linked to metastasis and mortality, though clinical factors remain primary predictors.

Area of Science:

  • Biochemistry and Molecular Biology
  • Oncology
  • Pathology

Background:

  • Extracellular polysaccharide hyaluronan (HA) influences cell behavior and cancer progression.
  • The role of HA in differentiated thyroid carcinoma (DTC) development and prognosis is largely unknown.

Purpose of the Study:

  • To evaluate the expression and prognostic value of hyaluronan (HA) in differentiated thyroid carcinoma (DTC).
  • To investigate the association between HA expression in cancer cells and tumor stroma with patient outcomes.

Main Methods:

  • Analyzed HA expression in tumor samples from 204 DTC patients using a biotinylated affinity probe.
  • Assessed HA in carcinoma cells and intra/peritumoral stroma.
  • Correlated HA expression with clinicopathological factors and patient survival using statistical analyses.

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Main Results:

  • High percentage of HA-positive cancer cells observed in 47% of papillary and 21% of follicular carcinomas.
  • Strong stromal HA staining intensity correlated with distant metastases, advanced pTNM stage, older age, and cancer-related mortality.
  • Stromal HA intensity was a significant predictor of DTC mortality in univariate analysis, but not an independent factor in multivariate analysis.

Conclusions:

  • Strong stromal hyaluronan (HA) staining intensity is associated with tumor progression and poor outcomes in differentiated thyroid carcinoma (DTC) patients.
  • Clinical factors like age, gender, and pTNM stage are more powerful independent predictors of DTC-related death.
  • Further research may elucidate the specific mechanisms by which stromal HA influences DTC progression.