EMBL scientists pave the way for reducing the harmful side effects antibiotics have on gut bacteria. Antibiotics help us to treat bacterial infections and save millions of lives each year. But they can also harm the helpful microbes residing in our gut, weakening one of our body’s first lines of defence against pathogens and compromising the multiple beneficial effects our microbiota has for our health.

A team of engineers and biotechnologists at the University of Freiburg has for the first time shown in mammals that the concentration of antibiotics in the body can be determined using breath samples. The breath measurements also corresponded to the antibiotic concentrations in the blood. The team’s biosensor – a multiplex chip – will in future enable personalized dosing of medicines against infectious diseases on-site.

The bacterium Staphylococcus epidermidisis primarily a harmless microbe found on the skin and in the noses of humans. Yet some strains of this species can cause infections – in catheters, artificial joints, heart valves, and in the bloodstream – which are difficult to treat. These bacteria are often resistant to a particularly effective antibiotic, methicillin, and are among the most feared germs in hospitals.

Article - 17/03/2021

Epigenetic switches in bacteria as biosensors

The analysis of pathogen biomarkers and biomarkers for the diagnosis of diseases can be crucial for health. However, the detection of pathogens and diseases depends on a sensitive and reliable method that delivers rapid results. Biosensors have such properties. Researchers at the Institute of Biochemistry and Technical Biochemistry (IBTB) at Stuttgart University have constructed an epigenetic circuit composed of plasmids that might make it…

Dossier - 06/12/2019

Microbiome: human health is closely connected with our microbial communities

People have 1.3 times more microorganisms than body cells. This microbial community influences how we digest our food, how active our immune system is, as well as whether we tend to be more anxious or curious. A number of diseases have also been shown to be associated with a disturbed microbiome. Researchers still have a long way to go before the knowledge acquired can be used for developing therapies.

Article - 24/01/2019

Scientists to combat antibiotic-resistant bacteria in wastewater

In Germany, around 1,500 tonnes of antibiotics per year are administered to humans and animals. As a result, more and more bacteria are developing resistance to common antibiotics. As part of HyReKA, a cooperative project funded by the BMBF, scientists led by Professor Thomas Schwartz from the KIT are investigating how antibiotic-resistant pathogens spread and how they can be prevented from doing so.

Dossier - 31/03/2014

Peptides diverse molecules of life

Peptides exist in all organisms, wherever there are cells. The range of their physiological functions is huge. Biologically active peptides can act as hormones, neurotransmitters, growth factors as well as toxins and antibiotics. This is what makes them highly interesting drug leads. They are used for the treatment of autoimmune diseases, cancer and other diseases. Peptides are gaining in importance as candidates for drugs.

Dossier - 10/02/2014

Multiresistant pathogens a self-inflicted threat?

Most bacterial infections have lost their capacity to cause terror thanks to antibiotics. However, the increase in antibiotic resistances is making the fight against bacterial pathogens rather difficult, and the widespread overuse and inappropriate use of antibiotics continues to fuel the increase in antibiotic-resistant bacteria.

Dossier - 08/10/2012

Marine biotechnology unknown sources of hope from the depths of the sea

Biotechnological methods are used to investigate marine life and the results obtained from these investigations advance research in the fields of medicine and energy and into substances used as food supplements and cosmetics. The area of marine biotechnology is fairly diverse. Although it is not on the coast even the southern German state of Baden-Württemberg is involved in marine biotechnology.

Dossier - 23/07/2012

Extremophilic bacteria

Extremophilic bacteria love it hot, sour or salty, toxic substances like heavy metals also do them good and even give them energy. As molecular and systems biology techniques get better and better, industry is also becoming increasingly interested in these exotic organisms. What potential does knowing the biochemistry of extremophilic bacteria have for the pharmaceutical, cosmetics and sanitary articles industries?