Navigation Links
Impotency Drugs Help to Unmask Cancer Cells

Johns Hopkins Kimmel Cancer Center has come up with a remarkable discovery. Scientists there, have found out that certain drugs that are helpful //to overcome impotence have added benefits. Sildenafil and other drugs that help to dilate blood vessels by increasing the production of a chemical messenger seem to help in unveiling cancer cells. These cancer cells once unmasked, will be recognized and ambushed by that the immune system.

The Johns Hopkins Kimmel Cancer Center conducted tests on mice. Mice with implanted breast and colon tumors were treated with sildenafil. The treated mice showed a decrease in the size of tumors. However mice that had their immune system tampered with, had the same sized tumors at the end of the tests. The scientists say, that the drug is abetting the immune system's own cellular response to cancer.

In a report published in the Nov. 27 issue of the Journal of Experimental Medicine, the Hopkins team says boosted levels of the chemical messenger nitric oxide appear to dampen the effects of a specialized cell that diverts the immune system away from tumors, allowing swarms of cancer-attacking T-cells to migrate to tumor sites in the rodents.

Lab-grown cancer cells treated with sildenafil showed similar results, as did tissue samples taken from 14 head and neck cancer and multiple myeloma patients.

Sildenafil, marketed under the trade name Viagra, is one of a class of drugs used to treat erectile dysfunction in millions of men, and in recent years, its ability to stimulate the production of NO has been investigated by experts in diseases linked to the activity of blood vessels and blood components.

The new Hopkins study homes in on a tactic used by cancers to avoid detection by the immune system by turning elements of that system to its own advantage, says Ivan Borrello, M.D., assistant professor at the Johns Hopkins Kimmel Cancer Center.

Borrello and his colleagues found th at tumors exploit nitric oxide-producing immune cells to create a sort of 'fog' that keeps them hidden from white blood cells (T-cells) that mount attacks on tumors.

These NO-producing cells, a.k.a. myeloid-derived suppressor cells (MDSCs), normally use nitric oxide to help bring the immune system back down to surveillance levels after an 'attack mode' response to foreign material.

The impotence drugs seem to reverse this process, stopping the production of nitric oxide by MDSCs thereby allowing other immune cells to 'see' the cancer and attack it, says Paolo Serafini, Ph.D., a research fellow in Borrello's laboratory and lead author on the paper.

Nitric oxide is infamous among city dwellers as a component of air-polluting smog, but is gaining importance in medical research for its cell-signaling duties and its ability to divert soldiering T-cells that patrol and protect.

The Hopkins team also analyzed gene expression patterns of the myeloid-derived suppressor cells and found that sildenafil blocked two genes regulating enzymes - arginase and nitric oxide synthase - which are key to triggering immune suppression via MDSCs. Borrello's team found that the arginase enzyme, which metabolizes a dietary supplement called L-arginine, also contributes to dampening the immune system through MDSCs much like nitric oxide, and its production can be reversed by sildenafil. 'Impotence drugs won't cure cancer,' Borello cautioned, 'but could be used in addition to standard chemotherapy or immunotherapy treatments.' The investigators are planning human studies to begin in the next year.

Source-Eurekalert
MST
'"/>




Related medicine news :

1. Asian Men are Reluctant to Seek Help for Impotency: Report
2. Lean Protein Could Be Key to Obesity Drugs
3. Life Saving Cancer Drugs – From Chicken! Possible Says Dolly’ Creatos
4. Nasal Spray Could Take Drugs Direct to Brain.
5. Emphasis to ban Drugs ads by Doctors
6. Osteoporosis Drugs: right time to take-off
7. Drugs disrupt formation of blood vessels
8. Drugs to stop burgeon of HIV
9. Misleading Advertisements for Prescription Drugs
10. Drugs For Anthrax May Interfere With Oral Contraceptives
11. Over-The-Counter Drugs May Prevent Alzheimers
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:10/13/2017)... (PRWEB) , ... October 13, 2017 , ... Apple ... care services, staged a mock evacuation of the facility as part of a disaster ... Fire Department, Echo Hose EMS and Shelton City Emergency Manager, as well as the ...
(Date:10/13/2017)... , ... October 13, 2017 , ... Global Healthcare Management’s ... Alexandria Park in Milford, NJ. This free event, sponsored by Global Healthcare Management’s ... The fun run is geared towards children of all ages; it is a ...
(Date:10/13/2017)... ... October 13, 2017 , ... “The Journey: From the ... danger possible to save lost souls in the Philippines. “The Journey: From the Mountains ... a dedicated teacher of the Bible. She has taught all ages and currently teaches ...
(Date:10/12/2017)... ... October 12, 2017 , ... Planet Fitness, one of the largest and ... plans to open a flagship location in Covington, LA at 401 N. U.S. Highway ... store next to Office Depot in the Holiday Square shopping center. Its location allows ...
(Date:10/12/2017)... ... 2017 , ... Asante, a nationally recognized health system in ... existing home health joint venture through an agreement, effective October 1, 2017, to ... home health company with Asante, delivering clinically integrated care, for the past eight ...
Breaking Medicine News(10 mins):
(Date:10/10/2017)... -- NDS received FDA 510(k) clearance in May 2017 for its highly ... designed for endoscopy environments. An innovative secondary monitor solution, ZeroWire ... support the improvement of patient outcomes, procedural efficiency, and the lowering ... ... ...
(Date:10/4/2017)... 4, 2017  South Korean-based healthcare product Development Company ... "cprCUBE" on Kickstarter. The device will educate the user ... with better efficiency compared to the dated and pricey ... on efficacy of the compression for a more informed ... goal to raise $5,000. ...
(Date:10/2/2017)... 2017  Eli Lilly and Company (NYSE: ... third quarter of 2017 on Tuesday, October 24, 2017. ... day with the investment community and media to further ... call will begin at 9 a.m. Eastern time. Investors, ... webcast of the conference call through a link that ...
Breaking Medicine Technology: