Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Gene technology to fight lethal hospital acquired infection

19.01.2009
Scientists at The University of Nottingham are leading a major European study to unravel the genetic code of one of the most lethal strains of hospital acquired infections.

The 3 million euro, three-year study will use gene knock-out technology developed in Nottingham to study the function of genes in a ‘super’ strain of the bacteria Clostridium difficile to discover why it causes more severe disease, kills more people, is harder to eradicate and more resistant to antibiotics.

It is hoped that the HYPERDIFF study, which involves partners from the UK, Slovenia, Italy, France, The Netherlands and Germany and is funded with a grant from the European Community, will lead to better tests to diagnose ‘super’ strains of C.difficile, more effective treatments and, possibly, even a vaccine to protect against the disease.

Since the turn of the new millennium there has been a dramatic increase in the incidence of C.difficile. Currently the most frequently occurring healthcare associated infection, last year it killed more than seven times as many people in the UK as MRSA. Reasons for this increase may include improvements in reporting procedures, the increasing age of the population as the elderly are especially vulnerable, lower standards of hygiene and overcrowding on hospital wards.

However, a further significant factor has been the arrival in Europe of so-called ‘hypervirulent’ strains such as ribotype 027, which are responsible for more severe disease and are more difficult to treat.

Currently, scientists know that the bacteria cause disease by sticking to epithelial cells of the gut lining and releasing two toxins that damage cells leading to the tell-tale symptom of severe diarrhoea. However, there is very little known about the ways in which the bacteria operate and why the strain should be more severe than its less virulent cousins.

Leading the study, Professor Nigel Minton in The University of Nottingham’s School of Molecular Medical Sciences, said: “These hypervirulent organisms seem to be taking over as the dominant strain in outbreaks and, worryingly, there are only two antibiotics which are still effective against them. There is a very real danger that total resistance may arise, and if that happens then this will become an extremely serious problem.

“The idea behind the study is that we investigate the genomes of the hypervirulent strains and identify their differences to the so-called standard strains. In this way, we should get a clearer picture of the whole range of factors involved in its spread and the way in which it causes disease.”

During the three-year study, scientists at Nottingham will use a technology called ClosTron to produce mutant versions of the hypervirulent strains. They will knock out genes one by one and then compare the mutant version to the standard organism to assess the function of each cell.

The project will also investigate whether pets and other domesticated animals are carriers of the bacteria and what effect this may have had on the rise of C.difficile as a community acquired infection.

Emma Thorne | alfa
Further information:
http://www.nottingham.ac.uk
http://communications.nottingham.ac.uk/News/Article/Gene-technology-to-fight-infection.html

More articles from Life Sciences:

nachricht Repairing damaged hearts with self-healing heart cells
22.08.2017 | National University Health System

nachricht Biochemical 'fingerprints' reveal diabetes progression
22.08.2017 | Umea University

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: Fizzy soda water could be key to clean manufacture of flat wonder material: Graphene

Whether you call it effervescent, fizzy, or sparkling, carbonated water is making a comeback as a beverage. Aside from quenching thirst, researchers at the University of Illinois at Urbana-Champaign have discovered a new use for these "bubbly" concoctions that will have major impact on the manufacturer of the world's thinnest, flattest, and one most useful materials -- graphene.

As graphene's popularity grows as an advanced "wonder" material, the speed and quality at which it can be manufactured will be paramount. With that in mind,...

Im Focus: Exotic quantum states made from light: Physicists create optical “wells” for a super-photon

Physicists at the University of Bonn have managed to create optical hollows and more complex patterns into which the light of a Bose-Einstein condensate flows. The creation of such highly low-loss structures for light is a prerequisite for complex light circuits, such as for quantum information processing for a new generation of computers. The researchers are now presenting their results in the journal Nature Photonics.

Light particles (photons) occur as tiny, indivisible portions. Many thousands of these light portions can be merged to form a single super-photon if they are...

Im Focus: Circular RNA linked to brain function

For the first time, scientists have shown that circular RNA is linked to brain function. When a RNA molecule called Cdr1as was deleted from the genome of mice, the animals had problems filtering out unnecessary information – like patients suffering from neuropsychiatric disorders.

While hundreds of circular RNAs (circRNAs) are abundant in mammalian brains, one big question has remained unanswered: What are they actually good for? In the...

Im Focus: RAVAN CubeSat measures Earth's outgoing energy

An experimental small satellite has successfully collected and delivered data on a key measurement for predicting changes in Earth's climate.

The Radiometer Assessment using Vertically Aligned Nanotubes (RAVAN) CubeSat was launched into low-Earth orbit on Nov. 11, 2016, in order to test new...

Im Focus: Scientists shine new light on the “other high temperature superconductor”

A study led by scientists of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg presents evidence of the coexistence of superconductivity and “charge-density-waves” in compounds of the poorly-studied family of bismuthates. This observation opens up new perspectives for a deeper understanding of the phenomenon of high-temperature superconductivity, a topic which is at the core of condensed matter research since more than 30 years. The paper by Nicoletti et al has been published in the PNAS.

Since the beginning of the 20th century, superconductivity had been observed in some metals at temperatures only a few degrees above the absolute zero (minus...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Call for Papers – ICNFT 2018, 5th International Conference on New Forming Technology

16.08.2017 | Event News

Sustainability is the business model of tomorrow

04.08.2017 | Event News

Clash of Realities 2017: Registration now open. International Conference at TH Köln

26.07.2017 | Event News

 
Latest News

Cholesterol-lowering drugs may fight infectious disease

22.08.2017 | Health and Medicine

Meter-sized single-crystal graphene growth becomes possible

22.08.2017 | Materials Sciences

Repairing damaged hearts with self-healing heart cells

22.08.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>