Health and Medical News and Resources

General interest items edited by Janice Flahiff

Super-Sensitive Tests Could Detect Diseases Earlier

Risk of prostate cancer in two age groups base...

Risk of prostate cancer in two age groups based on Free PSA as % of Total PSA Catalona W, Partin A, Slawin K, Brawer M, Flanigan R, Patel A, Richie J, deKernion J, Walsh P, Scardino P, Lange P, Subong E, Parson R, Gasior G, Loveland K, Southwick P (1998). “Use of the percentage of free prostate-specific antigen to enhance differentiation of prostate cancer from benign prostatic disease: a prospective multicenter clinical trial”. JAMA 279 (19) : 1542–7. doi:10.1001/jama.279.19.1542. PMID 9605898. (Photo credit: Wikipedia)

From the 28 May 2012 ScienceDaily article

Scientists have developed an ultra-sensitive test that should enable them to detect signs of a disease in its earliest stages, in research published May 27in the journalNature Materials.

The scientists, from Imperial College London and the University of Vigo, have created a test to detect particular molecules that indicate the presence of disease, even when these are in very low concentrations. There are already tests available for some diseases that look for such biomarkers using biological sensors or ‘biosensors’. However, existing biosensors become less sensitive and predictable at detecting biomarkers when they are in very low concentrations, as occurs when a disease is in its early stages.

In the new study, the researchers demonstrated that the new biosensor test can find a biomarker associated with prostate cancer, called Prostate Specific Antigen (PSA). However, the team say that the biosensor can be easily reconfigured to test for other diseases or viruses where the related biomarker is known….

May 31, 2012 - Posted by | Medical and Health Research News | , , ,

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