Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Men with multiple sclerosis pass disease to offspring more often than women

25.07.2006
According to a new study, men transmit multiple sclerosis (MS) to their children 2.2 times more often than women in families where the father or mother and a child have multiple sclerosis.

This study involved an investigation of 444 children of an MS-affected father or mother from 3,598 individuals in 206 families to compare the transmission of MS between affected men and women. The findings by researchers from Mayo Clinic, the University of California at San Francisco, the University of California at Berkeley and Kaiser Permanente will be published in the July 25 issue of the journal Neurology.

"Fathers with MS tend to have more children who develop MS than do mothers with the disease," says Brian Weinshenker, M.D., Mayo Clinic neurologist and study investigator. "When we looked at a large population of MS patients, when there was a parent and a child who had MS in a family, the child with MS got the disease twice as often from the father rather than the mother."

MS affects approximately 1 in 1,000 people, and it is twice as common in women as in men. In 85 percent of cases, no cause is known. For 15 percent of MS patients, a family member within a generation also is affected by the disease. For familial cases, no single gene has been identified that strongly predisposes a person to MS.

"Rather, a combination of genes and unknown environmental factors work together to cause multiple sclerosis," says Orhun Kantarci, M.D., Mayo Clinic neurologist and lead author of the paper.

The researchers theorize that men may have a greater "genetic load" of MS genes, which may explain their findings.

"The hypothesis of the study is that men are more resistant to MS, so they need stronger or a larger number of genes in order to develop MS, and then pass these genes to their children," says Dr. Kantarci.

He also explains that the overtransmission of MS by men in the study is not easily explained by hormonal differences between men and women or by genes on the sex chromosomes.

The findings shouldn't change how men with MS are counseled about the risk to their offspring, say the researchers. The risk of having MS if a person has an affected parent is increased by about 20-fold compared to not having an affected parent; the additional risk by virtue of having an affected father is not sufficient to change patient counseling practices, says Dr. Kantarci.

"The overtransmission by men is primarily of interest to scientists studying the mechanisms of genetic transmission of MS susceptibility," said Dr. Kantarci, "and may indicate that nontraditional, or so-called epigenetic factors, play some role in the transmission of MS."

The investigators also indicate that their findings should be confirmed in another study by other researchers to be widely accepted.

No intervention prevents men from passing on MS, say the researchers, who indicate the necessity for MS researchers to identify the reason for this overtransmission by men, including finding genes predisposing to the "parent-of-origin" effect observed in this study.

Lisa Lucier | EurekAlert!
Further information:
http://www.mayo.edu
http://www.mayoclinic.com

More articles from Studies and Analyses:

nachricht Antarctic Ice Sheet mass loss has increased
14.06.2018 | Technische Universität Dresden

nachricht WAKE-UP provides new treatment option for stroke patients | International study led by UKE
17.05.2018 | Universitätsklinikum Hamburg-Eppendorf

All articles from Studies and Analyses >>>

The most recent press releases about innovation >>>

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

Im Focus: Temperature-controlled fiber-optic light source with liquid core

In a recent publication in the renowned journal Optica, scientists of Leibniz-Institute of Photonic Technology (Leibniz IPHT) in Jena showed that they can accurately control the optical properties of liquid-core fiber lasers and therefore their spectral band width by temperature and pressure tuning.

Already last year, the researchers provided experimental proof of a new dynamic of hybrid solitons– temporally and spectrally stationary light waves resulting...

Im Focus: Overdosing on Calcium

Nano crystals impact stem cell fate during bone formation

Scientists from the University of Freiburg and the University of Basel identified a master regulator for bone regeneration. Prasad Shastri, Professor of...

Im Focus: AchemAsia 2019 will take place in Shanghai

Moving into its fourth decade, AchemAsia is setting out for new horizons: The International Expo and Innovation Forum for Sustainable Chemical Production will take place from 21-23 May 2019 in Shanghai, China. With an updated event profile, the eleventh edition focusses on topics that are especially relevant for the Chinese process industry, putting a strong emphasis on sustainability and innovation.

Founded in 1989 as a spin-off of ACHEMA to cater to the needs of China’s then developing industry, AchemAsia has since grown into a platform where the latest...

Im Focus: First real-time test of Li-Fi utilization for the industrial Internet of Things

The BMBF-funded OWICELLS project was successfully completed with a final presentation at the BMW plant in Munich. The presentation demonstrated a Li-Fi communication with a mobile robot, while the robot carried out usual production processes (welding, moving and testing parts) in a 5x5m² production cell. The robust, optical wireless transmission is based on spatial diversity; in other words, data is sent and received simultaneously by several LEDs and several photodiodes. The system can transmit data at more than 100 Mbit/s and five milliseconds latency.

Modern production technologies in the automobile industry must become more flexible in order to fulfil individual customer requirements.

Im Focus: Sharp images with flexible fibers

An international team of scientists has discovered a new way to transfer image information through multimodal fibers with almost no distortion - even if the fiber is bent. The results of the study, to which scientist from the Leibniz-Institute of Photonic Technology Jena (Leibniz IPHT) contributed, were published on 6thJune in the highly-cited journal Physical Review Letters.

Endoscopes allow doctors to see into a patient’s body like through a keyhole. Typically, the images are transmitted via a bundle of several hundreds of optical...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Munich conference on asteroid detection, tracking and defense

13.06.2018 | Event News

2nd International Baltic Earth Conference in Denmark: “The Baltic Sea region in Transition”

08.06.2018 | Event News

ISEKI_Food 2018: Conference with Holistic View of Food Production

05.06.2018 | Event News

 
Latest News

Better model of water under extreme conditions could aid understanding of Earth's mantle

21.06.2018 | Earth Sciences

What are the effects of coral reef marine protected areas?

21.06.2018 | Life Sciences

The Janus head of the South Asian monsoon

21.06.2018 | Earth Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>