Navigation Links
More blood vessels in hormone-resistant prostate tumors
Date:12/15/2009

Patients with advanced prostate cancer are often treated with hormones, but when the tumours start growing again they have more and different blood vessels, reveals a thesis from the Sahlgrenska Academy, at the University of Gothenburg, Sweden. This discovery paves the way for new treatments for hormone-resistant prostate cancer.

Late in the course of the disease, when the prostate cancer has spread, most patients are given hormone therapy. This reduces the production of the male sex hormone and the tumour shrinks.

"The problem is that the effect is transient," says molecular biologist Helne Gustavsson, who wrote the thesis. "Sooner or later the tumour will develop resistance to the hormone treatment and then the cancer will continue to grow, often as secondary tumours in the bones.

Tumours have to make new blood vessels if they are to grow and spread in the body. The thesis shows that the tumours that have relapsed after a patient has been given hormone therapy contain more blood vessels. The blood vessels often also look different to how they looked during the earlier stages of the disease.

Another interesting finding is that levels of a protein known as ADAMTS1 are lower in these aggressive tumours. This protein is known to inhibit the growth of blood vessels. Low levels of the protein in the tumours are associated with more blood vessels and a greater spread of the cancer.

"If we can prevent the tumour from making new blood vessels, we can also prevent the cancer from spreading," says Gustavsson. "Now that we have a better understanding of how the formation of blood vessels is controlled in this stage of prostate cancer, we are in a better position to develop medicines that suppress the formation of new vessels in hormone-resistant prostate cancer."

The research team at the Sahlgrenska Academy will now assess how these changes affect the function of the blood vessels and their sensitivity to different treatments.


'/>"/>

Contact: Helne Gustavsson
helene.gustavsson@urology.gu.se
46-313-422-928
University of Gothenburg
Source:Eurekalert

Related medicine news :

1. Specific antagonism lowers blood pressure
2. Restricting Blood Flow May Help Heart Bypass Patients
3. FDA Updates Prescription Guidelines for Blood Thinner
4. Doctors Often Miss High Blood Pressure in Kids
5. Back to School Means Return of School Blood Drives
6. Blood-flow detector software show promise in preventing brain damage
7. FDA Approves New Roche West Nile Virus Blood Screening Test
8. Australian-led international study shows blood pressure drugs cut death rate in type 2 diabetes
9. Laser blasts viruses in blood
10. Study Demonstrates Marteks Algal DHA Oil Improves Blood Triglyceride Lipid Levels
11. LifeMasters Provides Tips for Maintaining a Healthy Blood Cholesterol Level
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/30/2016)... ... April 30, 2016 , ... Saturday, April ... veterinarians’ global impact on public health. The World Veterinary Association (WVA) and the ... year have selected continuing education with a One Health focus, which emphasizes how ...
(Date:4/30/2016)... ... April 30, 2016 , ... Orlando-based Maximized Living has selected Dr. Nick ... in Rio. Under the care of Maximized Living doctors at the London Olympics ... showing, Maximized Living is sending the largest contingent of elite chiropractors to Rio to ...
(Date:4/29/2016)... , ... April 29, 2016 , ... ... Ten Footwear Foundation, the national charitable foundation serving the footwear industry, has broken ... volunteers representing more than 130 companies across 23 states during the months of ...
(Date:4/29/2016)... (PRWEB) , ... April 29, 2016 , ... On Tuesday, ... hospitals across the Southeast, celebrated the signature of Gov. Nathan Deal on SB 258, ... Geoff Duncan (R - Cumming), offers a 70% tax credit to individuals and corporations ...
(Date:4/29/2016)... ... April 29, 2016 , ... Conditions were ideal for Global ... Park on Sunday, with sunny skies, a light breeze and temperatures in the 60s. ... , The 5k Run and Walk and 1-mile walk were held to increase ...
Breaking Medicine News(10 mins):
(Date:4/27/2016)... 2016  Bayer Animal Health today announced that ... University of Florida College of Veterinary Medicine, is ... Communication Award (BECA). Brittany was selected from entries ... total of $70,000 in scholarship funds through the ... has provided a total of $232,500 in scholarship ...
(Date:4/27/2016)... , April 27, 2016 ... addition of the  "Global Anesthesia Disposables Market ... http://photos.prnewswire.com/prnh/20160330/349511LOGO ) ,The global anesthesia ... a CAGR of 4.03% during the period ... a major threat to patients, safety. Organizations ...
(Date:4/27/2016)... , April 27, 2016 ... USD 2.14 billion by 2022, according to a ...      (Logo: http://photos.prnewswire.com/prnh/20150105/723757 ) , ... affecting the efficiency and accuracy delivered by the ... demand for novel urinalysis instruments and consumables. For ...
Breaking Medicine Technology: