Navigation Links
Statins, Painkillers May Upset PSA Test Results
Date:8/6/2010

By Amanda Gardner
HealthDay Reporter

FRIDAY, Aug. 6 (HealthDay News) -- Some of the most widely prescribed drugs in the United States may skew results of prostate cancer screening tests, possibly causing errors in diagnoses, a new study finds.

A prostate cancer diagnosis is typically based on an elevated PSA (prostate-specific antigen)level, but new research shows that common drugs, including cholesterol-lowering statins and certain painkillers, may lower PSA levels.

"Our study reveals that men regularly consuming NSAIDs [non-steroidal anti-inflammatory drugs], statins, and thiazide diuretics may have lower serum PSA levels compared to men who are not taking these medications," said Dr. Steven L. Chang, lead author of a paper published online Aug. 2 in the Journal of Clinical Oncology.

"This could be a confounder when you're trying to screen for prostate cancer," added Dr. Lionel L. Bañez, assistant professor of urologic surgery at Duke University Medical Center in Durham, N.C. "We should exercise caution in interpreting PSA results from patients who are taking any of these medications, especially those who are taking these medications for a long time."

But for now, men shouldn't worry unduly that their health is being compromised, said another expert.

"One PSA reading does not give accurate information," said Dr. Jay Brooks, chairman of hematology/oncology at Ochsner Health System in Baton Rouge, La. "You want to follow the trend over a number of years. It's time that makes a difference."

Other studies have suggested that these drugs as well as others used to treat enlarged prostate can lower PSA levels, but those studies suffered from various limitations, the authors reported.

Chang and his colleagues studied the effect of 10 common medications on PSA test readings in 1,864 men age 40 and older with no history of prostate cancer.

One year of using NSAIDs, statins or thiazide diuretics gave PSA readings 1 percent, 3 percent and 6 percent lower, respectively, than those for men not on one of these drugs.

The numbers were significantly higher after five years: 6 percent, 13 percent and 26 percent lower PSA levels, respectively.

When statins were combined with the diuretics over five years, PSA levels were lowered 36 percent, the researchers found. (But taking calcium channel blockers -- often prescribed for high blood pressure -- neutralized that effect.)

It's not known why these three classes of medications have this effect, but the finding merits further study, the researchers said.

"The reason why these medications are associated with a lower PSA are unclear, and therefore it is impossible at this time to determine the true implications of our findings," said Chang, who conducted the study while at the Stanford University School of Medicine but is now affiliated with Brigham and Women's Hospital and Harvard Medical School in Boston.

Given how many older men take one or more medications, and often take NSAIDs, statins, or thiazide diuretics, the findings could affect a vast number of people, the authors stated. (The American Urological Association recommends offering prostate cancer screening to men starting at age 40.)

"If future studies show that the difference in PSA has no bearing on the development of prostate cancer, then it may be necessary to lower the PSA threshold for recommending prostate needle biopsies in men who are taking NSAIDs, statins and thiazide diuretics," Chang said.

Another possibility is that these drugs may actually have a protective effect against cancer, researchers speculated.

"Should studies demonstrate that these medications reduce the risk of developing prostate cancer, then there may be some role for NSAIDs, statins and thiazide diuretics in prostate cancer prevention," said Chang.

NSAIDs and statins are already being studied as a means of preventing prostate cancer or its progression, Bañez said.

"There may be another story here," he said.

More information

The National Cancer Institute has more on PSA testing.

SOURCES: Lionel L. Bañez, M.D., assistant professor, urologic surgery, Duke University Medical Center, Durham, N.C.; Jay Brooks, M.D., chairman, hematology/oncology, Ochsner Health System, Baton Rouge, La.; Steven L. Chang, M.D., urologist, Brigham and Women's Hospital, and instructor, surgery, Harvard Medical School, Boston; Aug. 2, 1010, Journal of Clinical Oncology, online


'/>"/>
Copyright©2010 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. MSU team studies connection between statins, tendon ruptures
2. Painkillers Lower Estrogen Levels, May Explain Cancer Reduction Risk
3. Another perk of painkillers? Decreased hormone levels may reduce cancer risk
4. Lincare Holdings Inc. Announces Fourth Quarter and Year Ended 2009 Financial Results
5. SXC Health Solutions to Host Fiscal 2009 Fourth Quarter and Year End Results Conference Call
6. Team Health Holdings, Inc., Announces Fourth Quarter and Fiscal 2009 Financial Results
7. First blinded study of venous insufficiency prevalence in MS shows promising results
8. NEJM Publishes Trial Results Demonstrating Bard FLAIR Endovascular Stent Graft Is Superior To Balloon Angioplasty For Failing Dialysis Grafts
9. BioMed Realty Trust Reports Fourth Quarter and Full-Year 2009 Financial Results
10. Kaiser Foundation Health Plan and Hospitals Report Fourth Quarter and Fiscal Year 2009 Financial Results
11. United American Healthcare Corporation Announces Fiscal 2010 Second Quarter Results
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Statins, Painkillers May Upset PSA Test Results 
(Date:2/9/2016)... ... 09, 2016 , ... Sir Grout, the leading hard surface ... announce that many of their franchises have received the Super Service Award from ... franchises received customer recognition through positive reviews and testimonials, as well as evaluations ...
(Date:2/8/2016)... ... February 08, 2016 , ... CURE Media Group , the nation’s leading ... Multiple Myeloma Heroes Awards event , which will annually honor individuals making heroic contributions ... MM. The MM Heroes Awards nomination process is officially open through February ...
(Date:2/8/2016)... ... February 08, 2016 , ... ... LA, celebrates the beginning of a new charity campaign. As part of their ... Special Advocates (CASA). In the belief that children deserve a voice, and in ...
(Date:2/8/2016)... ... February 08, 2016 , ... If you are feeling that your clothes ... not alone. According to the Center for Disease Control and Prevention (CDC), 34.9% of ... and certain types of cancer, some of the leading causes of preventable death. ...
(Date:2/8/2016)... ... February 08, 2016 , ... Local insurance ... greater Venice, FL area, has initiated a fundraiser for a two year old ... four days after Christmas. To support this beautiful child who is facing life’s ...
Breaking Medicine News(10 mins):
(Date:2/8/2016)... 8, 2016   HighPoint Solutions today ... (NRG),s pharmacovigilance technology services division.  NRG is a ... an Oracle Argus Specialized partner, providing drug safety ... companies. --> --> ... sciences capabilities and provides a global scale and ...
(Date:2/8/2016)... BOSTON , Feb. 8, 2016   Intarcia ... John Yee , MD, MPH, into the newly created ... Safety and Operations. Dr. Yee has two decades of ... companies, and at a major academic medical center. Most ... Affairs, US Diabetes, and VP, US Head Medical Officer ...
(Date:2/8/2016)... Calif. , Feb. 8, 2016 Lonza, a ... Sciences Inc., a biopharmaceutical company designing and developing novel ... agreements for the clinical supply of Kodiak,s therapeutic candidates. ... sites, including Slough (UK), Visp (CH) and Nansha (CN). ... Retinal diseases, such as age-related macular degeneration (AMD), cause ...
Breaking Medicine Technology: