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Talanta. 2006 Dec 15;70(5):914-21. doi: 10.1016/j.talanta.2006.05.053. Epub 2006 Jun 22.

Prostatic Zn determination for prostate cancer diagnosis.

Talanta

S Sh Shilstein, M Cortesi, A Breskin, R Chechik, D Vartsky, G Raviv, N Kleinman, J Ramon, G Kogan, V Gladysh, E Moriel, M Huszar, A Volkov, E Fridman

Affiliations

  1. Department of Particle Physics, Weizmann Institute of Science, POB 26, Rehovot 76100, Israel.

PMID: 18970860 DOI: 10.1016/j.talanta.2006.05.053

Abstract

We present our studies of prostatic Zn concentration measurements, carried out in the light of a novel prostate cancer (CAP) diagnosis method proposed by us. The method is based on in vivo prostatic Zn mapping by XRF trans-rectal probe. We report on the extensive clinical studies, intended to assess the validity of the novel proposed diagnostic method. Zn content was measured in vitro in needle-biopsy samples from several hundreds of patients, and was correlated with histological findings and other patient parameters. For this purpose, a technique of absolute Zn content determination in approximately 1mm(3) fresh tissue samples by XRF was developed. The experimental details and the main clinical-evaluation results are presented. We further outline the suggested design of the XRF trans-rectal probe for an efficient in vivo detection and mapping of the Zn fluorescence radiation from the prostate through the rectal wall. Laboratory phantom studies, a preliminary design concept and its expected performance are also reported.

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