Malaria mosquitoes sense toxins. Free Technical Library News

NEWS OF SCIENCE AND TECHNOLOGY, NOVELTY IN ELECTRONICS
Free technical library / timeline

Malarial mosquitoes sense toxins

23.12.2019

Researchers at the Liverpool School of Tropical Medicine (LSTM, UK) have identified a protein in the legs of malaria-carrying mosquitoes that "warns" the insect of toxic substances such as insecticides.

Scientists studied Anopheles gambiae and Anopheles coluzzii - the two main vectors of malaria in West Africa - and found that a specific family of binding proteins located in the legs of insects was highly expressed in resistant populations. This mechanism allows mosquitoes to bypass the pesticide trap.

The danger signaling protein is called SAP2. It has been found in large numbers in populations that are resistant to pesticides. Scientists also noticed that it is actively synthesized after contact with pyrethroids, a class of insecticides. When the gene coding for SAP2 was partially turned off, the protein level dropped - and pyrethroid sensitivity was restored; conversely, when the protein was expressed in large amounts, previously poison-free mosquitoes became resistant to pyrethroids.

Malaria is an acute febrile illness caused by parasites of the genus Plasmodium. They enter the human body through the bites of female Anopheles mosquitoes. A strong focus of the disease is in Africa: according to the World Health Organization, in 2017, 92% of malaria cases and 93% of deaths from malaria lived on the African continent. In the same year, in total, according to WHO statistics, 219 million people fell ill with malaria in 87 countries.

<< Back: Do not charge your smartphone at night 24.12.2019

>> Forward: A new value for the upper limit of the neutrino mass has been established 23.12.2019

Latest news of science and technology, new electronics:

The existence of an entropy rule for quantum entanglement has been proven 09.05.2024

Quantum mechanics continues to amaze us with its mysterious phenomena and unexpected discoveries. Recently, Bartosz Regula from the RIKEN Center for Quantum Computing and Ludovico Lamy from the University of Amsterdam presented a new discovery that concerns quantum entanglement and its relation to entropy. Quantum entanglement plays an important role in modern quantum information science and technology. However, the complexity of its structure makes understanding and managing it challenging. Regulus and Lamy's discovery shows that quantum entanglement follows an entropy rule similar to that for classical systems. This discovery opens new perspectives in the field of quantum information science and technology, deepening our understanding of quantum entanglement and its connection to thermodynamics. The results of the study indicate the possibility of reversibility of entanglement transformations, which could greatly simplify their use in various quantum technologies. Opening a new rule ... >>

Mini air conditioner Sony Reon Pocket 5 09.05.2024

Summer is a time for relaxation and travel, but often the heat can turn this time into an unbearable torment. Meet a new product from Sony - the Reon Pocket 5 mini-air conditioner, which promises to make summer more comfortable for its users. Sony has introduced a unique device - the Reon Pocket 5 mini-conditioner, which provides body cooling on hot days. With it, users can enjoy coolness anytime, anywhere by simply wearing it around their neck. This mini air conditioner is equipped with automatic adjustment of operating modes, as well as temperature and humidity sensors. Thanks to innovative technologies, Reon Pocket 5 adjusts its operation depending on the user's activity and environmental conditions. Users can easily adjust the temperature using a dedicated mobile app connected via Bluetooth. Additionally, specially designed T-shirts and shorts are available for convenience, to which a mini air conditioner can be attached. The device can oh ... >>

Energy from space for Starship 08.05.2024

Producing solar energy in space is becoming more feasible with the advent of new technologies and the development of space programs. The head of the startup Virtus Solis shared his vision of using SpaceX's Starship to create orbital power plants capable of powering the Earth. Startup Virtus Solis has unveiled an ambitious project to create orbital power plants using SpaceX's Starship. This idea could significantly change the field of solar energy production, making it more accessible and cheaper. The core of the startup's plan is to reduce the cost of launching satellites into space using Starship. This technological breakthrough is expected to make solar energy production in space more competitive with traditional energy sources. Virtual Solis plans to build large photovoltaic panels in orbit, using Starship to deliver the necessary equipment. However, one of the key challenges ... >>

New method for creating powerful batteries 08.05.2024

With the development of technology and the expanding use of electronics, the issue of creating efficient and safe energy sources is becoming increasingly urgent. Researchers at the University of Queensland have unveiled a new approach to creating high-power zinc-based batteries that could change the landscape of the energy industry. One of the main problems with traditional water-based rechargeable batteries was their low voltage, which limited their use in modern devices. But thanks to a new method developed by scientists, this drawback has been successfully overcome. As part of their research, scientists turned to a special organic compound - catechol. It turned out to be an important component that can improve battery stability and increase its efficiency. This approach has led to a significant increase in the voltage of zinc-ion batteries, making them more competitive. According to scientists, such batteries have several advantages. They have b ... >>

Alcohol content of warm beer 07.05.2024

Beer, as one of the most common alcoholic drinks, has its own unique taste, which can change depending on the temperature of consumption. A new study by an international team of scientists has found that beer temperature has a significant impact on the perception of alcoholic taste. The study, led by materials scientist Lei Jiang, found that at different temperatures, ethanol and water molecules form different types of clusters, which affects the perception of alcoholic taste. At low temperatures, more pyramid-like clusters form, which reduces the pungency of the "ethanol" taste and makes the drink taste less alcoholic. On the contrary, as the temperature increases, the clusters become more chain-like, resulting in a more pronounced alcoholic taste. This explains why the taste of some alcoholic drinks, such as baijiu, can change depending on temperature. The data obtained opens up new prospects for beverage manufacturers, ... >>

Random news from the Archive

Tetraneutron discovered 14.02.2016

Scientists from the Institute of Physical and Chemical Research of Japan reported the discovery of a tetraneutron candidate.

A tetraneutron is a resonant particle consisting of four neutrons. The energy of an open particle is approximately 0,83 megaelectronvolts.

Scientists have not been able to directly observe the particle because its energy is extremely low. However, with the help of conservation laws, physics showed the birth of a tetraneutron during experiments. In total, scientists registered four events associated with new resonant states.

See full Archive of science and technology news, new electronics

All languages of this page

Home page | Library | Articles | Website map | Site Reviews