Scientists all over the world hunt for anti-mutagens, substances protecting against mutations. Where they can find them? It was suggested and later proved that most anti-mutagens are located in those organs and biological liquids, which are connected with the process of reproduction. The latter is the key point in the life cycle, in which genome disorders should be minimal. Anti-mutagens were found in seeds, spores, eggs, and sperm. It was also established that anti-mutagens are formed in certain bacteria. Then, microbiologists have become curious about a possibility of obtaining and using bacterial mutagens in medicine.
Among wonderful bacteria producing anti-mutagens, there are bifidobacteria and lactic-acid bacteria that are very beneficial for health. They can be already called "domestic" because of their wide application in producing various milk, meat, and special fermented foodstuffs for people and animals. Bifidobacteria are the main component of a natural microflora of the intestine and produce lactic, acetic, and butyric acids that kill pathogenic and putrefactive bacteria. The same acids are produced by lactic bacteria inhabiting fermented milk.
Experiments conducted by L.I. Vorobeva and S.K. Abilev have shown that chemical mutagens kept in fermented milk lose their dangerous properties. Lactic-acid bacteria attack mutagens in different ways. They produce proteins-enzymes and lactic, butyric, and acetic acids, which suppress the activity of mutagens. Some lactic-acid bacteria are capable of forming chemical bounds with mutagens. Sometimes, bacterial cells act as anti-oxidants and remove free radicals.
Nadejda Markina | alfa
Spread of deadly eye cancer halted in cells and animals
13.11.2018 | Johns Hopkins Medicine
Breakthrough in understanding how deadly pneumococcus avoids immune defenses
13.11.2018 | University of Liverpool
Biochips have been developed at TU Wien (Vienna), on which tissue can be produced and examined. This allows supplying the tissue with different substances in a very controlled way.
Cultivating human cells in the Petri dish is not a big challenge today. Producing artificial tissue, however, permeated by fine blood vessels, is a much more...
Faster and secure data communication: This is the goal of a new joint project involving physicists from the University of Würzburg. The German Federal Ministry of Education and Research funds the project with 14.8 million euro.
In our digital world data security and secure communication are becoming more and more important. Quantum communication is a promising approach to achieve...
On Saturday, 10 November 2018, the research icebreaker Polarstern will leave its homeport of Bremerhaven, bound for Cape Town, South Africa.
When choosing materials to make something, trade-offs need to be made between a host of properties, such as thickness, stiffness and weight. Depending on the application in question, finding just the right balance is the difference between success and failure
Now, a team of Penn Engineers has demonstrated a new material they call "nanocardboard," an ultrathin equivalent of corrugated paper cardboard. A square...
Physicists at ETH Zurich demonstrate how errors that occur during the manipulation of quantum system can be monitored and corrected on the fly
The field of quantum computation has seen tremendous progress in recent years. Bit by bit, quantum devices start to challenge conventional computers, at least...
09.11.2018 | Event News
06.11.2018 | Event News
23.10.2018 | Event News
13.11.2018 | Life Sciences
13.11.2018 | Life Sciences
13.11.2018 | Awards Funding