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Related Experiment Video

Updated: Apr 28, 2026

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New concepts concerning prostate cancer screening.

Rebecca A Fillmore1, Chinatsu Kojima2, Chevaun Johnson2

  • 1Department of Biological Sciences, University of Southern Mississippi Gulf Coast, Long Beach MS 39560, USA.

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|June 15, 2014
PubMed
Summary

Prostate cancer (CaP) screening using Prostate-Specific Antigen (PSA) faces scrutiny. Research is needed for new biomarkers, like smooth muscle gamma actin, for CaP diagnosis and progression.

Keywords:
Prostate Cancer Antigen 3Prostate cancerTMPRSS2–EGR gene fusionprostate-specific antigensmooth muscle gamma actin

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Area of Science:

  • Oncology
  • Urology
  • Biomarker Research

Background:

  • Prostate cancer (CaP) is a growing global health concern, remaining a leading cause of cancer death in the US.
  • While Prostate-Specific Antigen (PSA) screening has lowered mortality, its overall effectiveness is now debated.
  • CaP incidence is increasing worldwide, particularly in eastern nations.

Purpose of the Study:

  • To review current data and expert recommendations on Prostate-Specific Antigen (PSA) screening for prostate cancer (CaP).
  • To highlight the need for novel biomarkers for CaP diagnosis and monitoring disease progression.
  • To introduce smooth muscle gamma actin as a potential new biomarker for CaP.

Main Methods:

  • Literature review of recent trials and follow-up data on PSA screening effectiveness.
  • Synthesis of recommendations from expert groups regarding PSA utilization strategies.
  • Description of research identifying smooth muscle gamma actin in prostate epithelia.

Main Results:

  • Data suggests limitations in the effectiveness of PSA as a primary screening tool for CaP.
  • Smooth muscle gamma actin has been identified as a contractile protein within prostate epithelia.
  • This protein shows potential as a unique diagnostic marker for CaP.

Conclusions:

  • Re-evaluation of PSA screening strategies for prostate cancer is warranted.
  • Further research into novel biomarkers is crucial for improved CaP diagnosis and management.
  • Smooth muscle gamma actin represents a promising candidate biomarker for prostate cancer detection.