Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Prostate cancer risk halved for subfertile men

02.02.2012
Involuntary childlessness owing to reduced fertility is a concern for many men. However, these men do have one advantage – they run a significantly lower risk of suffering from prostate cancer. Researchers are interested in whether this phenomenon could be used in the fight against cancer.

There is a clear link between male subfertility and a lower risk of prostate cancer. According to a new thesis from Lund University in Sweden, involuntarily childless men have around a 50 per cent lower risk of suffering from prostate cancer than men who have fathered at least one child.

Yasir Ruhayel, a doctoral student at Lund University and doctor at Skåne University Hospital, has based his research on the Malmö Diet and Cancer population study, where he has compared around 450 men with prostate cancer with an equal number of men in a control group who had not been diagnosed with the disease.

The thesis reinforces the findings of previous register-based studies, which have shown a connection, but this is the first time the issue has been studied in greater detail. An important conclusion is that the connection between reduced prostate cancer risk and subfertility is stronger than the connection between prostate cancer and other factors previously studied, for example diet, smoking, alcohol consumption and a number of different diseases.

... more about:
»AHR »Cancer »cancer risk »prostate »prostate cancer
Are there genetic explanations?
Yasir Ruhayel has also investigated whether variation in certain genes may be linked to the reduction in prostate cancer risk observed in the subfertile men.

“We have found certain genetic associations, but the results are preliminary and more extensive studies involving a larger number of men are needed before the significance of the genetics can be verified”, says Yasir Ruhayel.

One of the identified candidate genes is the AHR gene, which interacts with the male and female sex hormone signalling systems. AHR is also known as the ‘dioxin receptor’ because it mediates the harmful effects of the environmental toxicant dioxin, which can affect fertility.

If future research is able to more accurately determine which genes reduce the risk of prostate cancer, then this may open up new opportunities to develop drugs. However, before this can happen the genes with the desirable properties must be considered in a broader context, because reduced fertility is usually caused by a number of factors. The cancer-blocking properties must also be separated out and isolated from the properties that reduce fertility.

The researchers at Lund University are also interested in the reverse situation – whether it is possible to find ways of helping men with reduced fertility by studying the genes of men with prostate cancer.

Yasir Ruhayel defended his thesis, Male Subfertility and Prostate Cancer Risk: Epidemiological and Genetic Studies, on 27 January.

About prostate cancer
Prostate cancer is one of the most common types of cancer, affecting more than 10 per cent of Swedish men. Despite the high prevalence and frequently serious nature of the disease, there is still a lack of effective preventive treatment options and long-term cures. The most common diagnostic method is the PSA blood test, which is not generally considered to be a very reliable method. Many men undergo unnecessary operations with the risk of various adverse side-effects, in the view of the critics. Among those treated with ‘androgen blockade’ for more serious cases of prostate cancer, the cancer often returns within a few years and there is then no effective cure.
About childlessness and reduced fertility
Around one in seven couples have problems conceiving despite trying for at least a year. In roughly half of cases, the childlessness is due to the man’s reduced fertility. Childlessness can be explained by both genetic and environmental factors.

Contact:
For further information please contact supervisor and research group leader Yvonne Lundberg Giwercman: tel.: +46 70 597 79 04, Yvonne.Giwercman@med.lu.se
Yasir Ruhayel (available from 12 February): yasir.ruhayel@med.lu.se
Yasir Ruhayel is a doctoral student at the Department of Clinical Sciences in Malmö, Faculty of Medicine, Lund University. He is also a medical doctor and a resident in urology at Skåne University Hospital in Malmö.

Helga Ekdahl Heun | idw
Further information:
http://www.lu.se/o.o.i.s?id=12588&postid=2269342

Further reports about: AHR Cancer cancer risk prostate prostate cancer

More articles from Health and Medicine:

nachricht Penn vet research identifies new target for taming Ebola
12.01.2017 | University of Pennsylvania

nachricht The strange double life of Dab2
10.01.2017 | University of Miami Miller School of Medicine

All articles from Health and Medicine >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Designing Architecture with Solar Building Envelopes

Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.

As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...

Im Focus: How to inflate a hardened concrete shell with a weight of 80 t

At TU Wien, an alternative for resource intensive formwork for the construction of concrete domes was developed. It is now used in a test dome for the Austrian Federal Railways Infrastructure (ÖBB Infrastruktur).

Concrete shells are efficient structures, but not very resource efficient. The formwork for the construction of concrete domes alone requires a high amount of...

Im Focus: Bacterial Pac Man molecule snaps at sugar

Many pathogens use certain sugar compounds from their host to help conceal themselves against the immune system. Scientists at the University of Bonn have now, in cooperation with researchers at the University of York in the United Kingdom, analyzed the dynamics of a bacterial molecule that is involved in this process. They demonstrate that the protein grabs onto the sugar molecule with a Pac Man-like chewing motion and holds it until it can be used. Their results could help design therapeutics that could make the protein poorer at grabbing and holding and hence compromise the pathogen in the host. The study has now been published in “Biophysical Journal”.

The cells of the mouth, nose and intestinal mucosa produce large quantities of a chemical called sialic acid. Many bacteria possess a special transport system...

Im Focus: Newly proposed reference datasets improve weather satellite data quality

UMD, NOAA collaboration demonstrates suitability of in-orbit datasets for weather satellite calibration

"Traffic and weather, together on the hour!" blasts your local radio station, while your smartphone knows the weather halfway across the world. A network of...

Im Focus: Repairing defects in fiber-reinforced plastics more efficiently

Fiber-reinforced plastics (FRP) are frequently used in the aeronautic and automobile industry. However, the repair of workpieces made of these composite materials is often less profitable than exchanging the part. In order to increase the lifetime of FRP parts and to make them more eco-efficient, the Laser Zentrum Hannover e.V. (LZH) and the Apodius GmbH want to combine a new measuring device for fiber layer orientation with an innovative laser-based repair process.

Defects in FRP pieces may be production or operation-related. Whether or not repair is cost-effective depends on the geometry of the defective area, the tools...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

12V, 48V, high-voltage – trends in E/E automotive architecture

10.01.2017 | Event News

2nd Conference on Non-Textual Information on 10 and 11 May 2017 in Hannover

09.01.2017 | Event News

Nothing will happen without batteries making it happen!

05.01.2017 | Event News

 
Latest News

Multiregional brain on a chip

16.01.2017 | Power and Electrical Engineering

New technology enables 5-D imaging in live animals, humans

16.01.2017 | Information Technology

Researchers develop environmentally friendly soy air filter

16.01.2017 | Power and Electrical Engineering

VideoLinks
B2B-VideoLinks
More VideoLinks >>>