Scientists have discovered five types of bacteria that could be associated with prostate cancer, but warned of too many satellites in orbit – Earth – Science and Technology

Bacteria related to prostate cancer, the impact of laboratory foods on the environment, the conditions for observing Mercury, the threats posed by too many satellites in orbit and the largest ichthyosaur tooth. We bring you a summary of the most interesting information from the field of science in the past week.

British researchers have discovered five types of bacteria that could be linked to the development and worsening of prostate cancer. This discovery could be groundbreaking in the prevention and treatment of the disease, as scientists could develop antibiotics against it. The researchers performed a genetic analysis of urine and prostate tissue in 600 men, some of whom had been diagnosed with advanced organ cancer.

They discovered five types of bacteria that could be potentially associated with a rapidly progressive aggressive form of the disease. Men who found one or more species of newly detected bacteria in their urine were 2.6 times more likely than the others to develop cancer from an early to an advanced stage. The reported incidence of bacteria could also be related to reduced immune system function in men with aggressive prostate cancer. Therefore, their possible link with the onset and development of the disease will need to be clearly demonstrated in further studies.

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A significant discovery this week was also made by Finnish scientists, who found that laboratory cultivation of meat and insects could significantly save water and reduce carbon emissions in the future. The pressure on the planet can thus be reduced by up to 80 percent compared to current food production.

According to the study, the consumption of alternative foods has the same effect on the planet as a vegetarian or vegan diet, but provides a more comprehensive range of essential nutrients. Some of them studied in the early stages of development included laboratory-grown insects and crustaceans, egg whites derived from laboratory chicken cells, brown seaweed, protein powders made from mushrooms and microorganisms, edible algae and artificial milk, meat and berries. . However, some scientists are skeptical about switching to alternative foods. They warn that although these are promising discoveries, they may wreck the reluctance of the population to switch to such a diet.

An international team of scientists has warned that the increase in the number of satellites in Earth’s orbit may negatively affect the ability of astronomers to observe the starry sky. Scientists are particularly concerned about so-called megaconstellations, in which tens of thousands of satellites that provide broadband internet or other services are placed in orbit.

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According to scientists, the excessive number of satellites in space can not only interfere with astronomical measurements, but also deprive ordinary people of the experience of observing the night sky. According to experts, the satellites will soon be more than real stars visible to the naked eye. There is also an increasing risk that satellites in orbit will collide, which could damage aircraft or hit human homes if they hit Earth. Each time the satellites are launched into orbit, carbon dioxide, nitrogen dioxide and soot, which pollute the air, are also released. The team is therefore proposing to introduce environmental rules similar to those for the protection of the planet, the oceans or the atmosphere. For example, there would be limits on the number of satellites in orbit.

Researchers from the Academy of Sciences of the Czech Republic have described the interaction of proteins, which play an important role in the process of cell aging. Understanding them could help in the development of drugs aimed at killing such cells. Scientific teams have characterized the interactions between the transcription factors p35 and FOXO4, which prevent normal cells from becoming tumor cells under stress.

However, their action increases the production of the p21 protein, which causes the cells to become senescent, that is, to age. The researchers said that if the protein interaction is disrupted by a suitable inhibitor, the aging cell dies and can be replaced by a new cell that has the ability to divide. The results of the research could thus help to better understand the functions of proteins in maintaining cell balance, longevity and in responding to stress.

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Fossils of ichthyosaurs of large sea reptiles from prehistoric oceans have been found in the Swiss Alps, including the largest tooth of its kind ever discovered. Predatory ichthyosaurs were one of the largest animals ever to grow to a length of 20 meters and weighed 80 tons. Unlike dinosaurs, many fossils of these sea reptiles have not been preserved.

Interestingly, despite being a sea reptile, fossils discovered in the Swiss Alps were found at an altitude of 2800 meters. This caused the shifting of the tectonic plates and the formation of the alpine massif, which brought the fossils to greater heights. However, the finding of the ichthyosaur tooth is much rarer for scientists. It has a diameter of up to six centimeters. The largest tooth ever discovered was two centimeters in diameter and came from an individual 18 meters long.


Source: Pravda – Veda a technika by vat.pravda.sk.

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