Featured Research

from universities, journals, and other organizations

Loss of Y chromosome can explain shorter life expectancy, higher cancer risk for men

Date:
April 28, 2014
Source:
Uppsala University
Summary:
It is generally well known that men have an overall shorter life expectancy compared to women. A recent study shows a correlation between a loss of the Y chromosome in blood cells and both a shorter life span and higher mortality from cancer in other organs.

New research shows a correlation between a loss of the Y chromosome in blood cells and both a shorter life span and higher mortality from cancer in other organs.
Credit: © olly / Fotolia

It is generally well known that men have an overall shorter life expectancy compared to women. A recent study, led by Uppsala University researchers, shows a correlation between a loss of the Y chromosome in blood cells and both a shorter life span and higher mortality from cancer in other organs.

Related Articles


Men have a shorter average life span than women and both the incidence and mortality in cancer is higher in men than in women. However, the mechanisms and possible risk factors behind this sex-disparity are largely unknown. Alterations in DNA of normal cells accumulate throughout our lives and have been linked to diseases such as cancer and diabetes.

In a study recently published in the journal Nature Genetics an international team of researchers has analyzed the DNA in blood samples from a group of more than 1,600 elderly men. They found that the most common genetic alteration was a loss of the Y chromosome in a proportion of the white blood cells.

The group of men was studied for many years and the researchers could detect a correlation between the loss of the Y chromosome and shorter survival.

"Men who had lost the Y chromosome in a large proportion of their blood cells had a lower survival, irrespective of cause of death. We could also detect a correlation between loss of the Y chromosome and risk of cancer mortality," says Lars Forsberg, researcher at the Department of Immunology, Genetics and Pathology, Uppsala University, who has led the study.

The Y chromosome is only present in men and the genes contained on the Y chromosome have so far mostly been associated with sex determination and sperm production.

"You have probably heard before that the Y chromosome is small, insignificant and contains very little genetic information. This is not true. Our results indicate that the Y chromosome has a role in tumour suppression and they might explain why men get cancer more often than women. We believe that analyses of the Y chromosome could in the future become a useful general marker to predict the risk for men to develop cancer," says Jan Dumanski, professor at the Department of Immunology, Genetics and Pathology, Uppsala


Story Source:

The above story is based on materials provided by Uppsala University. Note: Materials may be edited for content and length.


Journal Reference:

  1. Lars A Forsberg, Chiara Rasi, Niklas Malmqvist, Hanna Davies, Saichand Pasupulati, Geeta Pakalapati, Johanna Sandgren, Teresita Diaz de Stεhl, Ammar Zaghlool, Vilmantas Giedraitis, Lars Lannfelt, Joannah Score, Nicholas C P Cross, Devin Absher, Eva Tiensuu Janson, Cecilia M Lindgren, Andrew P Morris, Erik Ingelsson, Lars Lind, Jan P Dumanski. Mosaic loss of chromosome Y in peripheral blood is associated with shorter survival and higher risk of cancer. Nature Genetics, 2014; DOI: 10.1038/ng.2966

Cite This Page:

Uppsala University. "Loss of Y chromosome can explain shorter life expectancy, higher cancer risk for men." ScienceDaily. ScienceDaily, 28 April 2014. <www.sciencedaily.com/releases/2014/04/140428121205.htm>.
Uppsala University. (2014, April 28). Loss of Y chromosome can explain shorter life expectancy, higher cancer risk for men. ScienceDaily. Retrieved January 30, 2015 from www.sciencedaily.com/releases/2014/04/140428121205.htm
Uppsala University. "Loss of Y chromosome can explain shorter life expectancy, higher cancer risk for men." ScienceDaily. www.sciencedaily.com/releases/2014/04/140428121205.htm (accessed January 30, 2015).

Share This


More From ScienceDaily



More Health & Medicine News

Friday, January 30, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

CDC: Get Vaccinated for Measles

CDC: Get Vaccinated for Measles

Reuters - US Online Video (Jan. 30, 2015) — The CDC is urging people to get vaccinated for measles amid an outbreak that began at Disneyland and has now infected more than 90 people. Linda So reports. Video provided by Reuters
Powered by NewsLook.com
Obama To Outline New Plan For Personalized Medicine

Obama To Outline New Plan For Personalized Medicine

Newsy (Jan. 30, 2015) — President Obama is expected to speak with drugmakers Friday about his Precision Medicine Initiative first introduced last week. Video provided by Newsy
Powered by NewsLook.com
Oxfam Calls for Massive Aid for Ebola-Hit West Africa

Oxfam Calls for Massive Aid for Ebola-Hit West Africa

AFP (Jan. 29, 2015) — Oxfam International has called for a multi-million dollar post-Ebola "Marshall Plan", with financial support given by wealthy countries, to help Guinea, Sierra Leone and Liberia to recover. Duration: 01:10 Video provided by AFP
Powered by NewsLook.com
Are We Winning The Fight Against Ebola?

Are We Winning The Fight Against Ebola?

Newsy (Jan. 29, 2015) — The World Health Organization announced the fight against Ebola has entered its second phase as the number of cases per week has steadily dropped. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:

Strange & Offbeat Stories

 

Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins