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Purdue-IU team uncovers potential prostate cancer marker
Date:8/2/2010

ion of cancerous tissue and the borders of tumors, Cooks said.

Livia Eberlin, co-author of the paper and a graduate student in Cooks' group, said the study showed promise in detecting precancerous lesions, as well.

"The DESI examination was able to distinguish a precancerous lesion in a small area of a sample made up of mostly healthy tissue," Eberlin said. "By evaluating the difference in the chemistry of cells, this technique can detect differences in diseased tissue that are otherwise indistinguishable. It could provide a new tool for pathologists to complement microscopic examination."

The team also plans to study differences in the chemistry of different types of prostate cancer tumors to see if there is a way to identify which are aggressive and which are not, she said.

Ratliff said the inability to tell the difference between aggressive and nonaggressive forms of prostate cancer causes problems in its treatment.

"A nonaggressive form of prostate cancer can be very slow to progress, and sometimes it is in the best interest of the patient not to go through rigorous treatments that reduce one's quality of life," he said. "The tests currently used to determine the probability that the cancer is an aggressive form are not very accurate, and about 30 percent of patients are misdiagnosed as having an aggressive form."

Additional co-authors of the paper include graduate students Allison Dill and Anthony Costa, and post doctoral researcher Demian Ifa from Purdue's Department of Chemistry and the Center for Analytical Instrumentation Development; Dr. Liang Cheng from the Indiana University School of Medicine Department of Pathology and Laboratory Medicine; and Dr. Timothy Masterson and Dr. Michael Koch from the Indiana University School of Medicine Department of Urology.

The team is already in the process of performing larger studies and plans to investigate the biological processes responsible for the expr
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Contact: Elizabeth K. Gardner
ekgardner@purdue.edu
765-494-2081
Purdue University
Source:Eurekalert  

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