Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Research identifies how mouth cells resist Candida infection

03.09.2013
Candida albicans is a common fungus found living in, and on, many parts of the human body.

Usually this species causes no harm to humans unless it can breach the body's immune defences, where can lead to serious illness or death. It is known as an opportunistic pathogen that can colonise and infect individuals with a compromised immune system.

New research, presented today at the Society for General Microbiology's Autumn Conference, gives us a greater understanding of how mucosal surfaces in the body respond to C. albicans to prevent damage being done during infection.

Researchers from King's College London focused on oral epithelial cells, a mucosal layer of cells that line the mouth, providing a barrier against microbes. The group challenged oral epithelial cells grown in vitro with C. albicans, looking at gene expression six and 24 hours after infection.

The results showed that a molecular signalling pathway know as the 'PI3 Kinase pathway' is activated as soon as five minutes after the epithelial cells encounter C. albicans, before the fungus has time to become invasive. This pathway seems to be involved in priming epithelial cells to protect against future damage. Inhibiting the PI3 Kinase pathway increased the amount of damage caused by C. albicans and reduced the normal tissue healing response.

This finding makes the PI3 Kinase pathway an attractive target for new therapeutics against C. albicans. Dr David Moyes, who presented the work at the conference, hopes that by boosting the activity of the pathway it may be possible to reduce the fungus's ability to cause tissue damage.

He explains, "We are developing a complete picture of how C. albicans interacts with the epithelial cells that make up our mucosal surfaces and learning how they are able to discriminate between harmless and harmful microbes.

"Many of the symptoms of C. albicans infection, are caused by the body's incorrect or overactive response to cell damage. Developing therapies that act on the patient, not the microbe, provides an entirely novel way of treating an infection and the likelihood of resistance is much reduced."

Candida infections are the third most commonly acquired hospital blood-borne infection, resulting in 50,000 deaths annually. Over 75 per cent of fertile age women will suffer from at least one Candida infection and there are around 2 million cases of oral candidiasis each year among HIV/AIDS patients.

Benjamin Thompson | EurekAlert!
Further information:
http://www.sgm.ac.uk

More articles from Life Sciences:

nachricht Two Group A Streptococcus genes linked to 'flesh-eating' bacterial infections
25.09.2017 | University of Maryland

nachricht Rainbow colors reveal cell history: Uncovering β-cell heterogeneity
22.09.2017 | DFG-Forschungszentrum für Regenerative Therapien TU Dresden

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: LaserTAB: More efficient and precise contacts thanks to human-robot collaboration

At the productronica trade fair in Munich this November, the Fraunhofer Institute for Laser Technology ILT will be presenting Laser-Based Tape-Automated Bonding, LaserTAB for short. The experts from Aachen will be demonstrating how new battery cells and power electronics can be micro-welded more efficiently and precisely than ever before thanks to new optics and robot support.

Fraunhofer ILT from Aachen relies on a clever combination of robotics and a laser scanner with new optics as well as process monitoring, which it has developed...

Im Focus: The pyrenoid is a carbon-fixing liquid droplet

Plants and algae use the enzyme Rubisco to fix carbon dioxide, removing it from the atmosphere and converting it into biomass. Algae have figured out a way to increase the efficiency of carbon fixation. They gather most of their Rubisco into a ball-shaped microcompartment called the pyrenoid, which they flood with a high local concentration of carbon dioxide. A team of scientists at Princeton University, the Carnegie Institution for Science, Stanford University and the Max Plank Institute of Biochemistry have unravelled the mysteries of how the pyrenoid is assembled. These insights can help to engineer crops that remove more carbon dioxide from the atmosphere while producing more food.

A warming planet

Im Focus: Highly precise wiring in the Cerebral Cortex

Our brains house extremely complex neuronal circuits, whose detailed structures are still largely unknown. This is especially true for the so-called cerebral cortex of mammals, where among other things vision, thoughts or spatial orientation are being computed. Here the rules by which nerve cells are connected to each other are only partly understood. A team of scientists around Moritz Helmstaedter at the Frankfiurt Max Planck Institute for Brain Research and Helene Schmidt (Humboldt University in Berlin) have now discovered a surprisingly precise nerve cell connectivity pattern in the part of the cerebral cortex that is responsible for orienting the individual animal or human in space.

The researchers report online in Nature (Schmidt et al., 2017. Axonal synapse sorting in medial entorhinal cortex, DOI: 10.1038/nature24005) that synapses in...

Im Focus: Tiny lasers from a gallery of whispers

New technique promises tunable laser devices

Whispering gallery mode (WGM) resonators are used to make tiny micro-lasers, sensors, switches, routers and other devices. These tiny structures rely on a...

Im Focus: Ultrafast snapshots of relaxing electrons in solids

Using ultrafast flashes of laser and x-ray radiation, scientists at the Max Planck Institute of Quantum Optics (Garching, Germany) took snapshots of the briefest electron motion inside a solid material to date. The electron motion lasted only 750 billionths of the billionth of a second before it fainted, setting a new record of human capability to capture ultrafast processes inside solids!

When x-rays shine onto solid materials or large molecules, an electron is pushed away from its original place near the nucleus of the atom, leaving a hole...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

“Lasers in Composites Symposium” in Aachen – from Science to Application

19.09.2017 | Event News

I-ESA 2018 – Call for Papers

12.09.2017 | Event News

EMBO at Basel Life, a new conference on current and emerging life science research

06.09.2017 | Event News

 
Latest News

Fraunhofer ISE Pushes World Record for Multicrystalline Silicon Solar Cells to 22.3 Percent

25.09.2017 | Power and Electrical Engineering

Usher syndrome: Gene therapy restores hearing and balance

25.09.2017 | Health and Medicine

An international team of physicists a coherent amplification effect in laser excited dielectrics

25.09.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>