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# video | Created "breathing" analogue of the human lung

Scientists from Rice University used 3D printing technology to create a miniature analogue of the human lung. The artificial organ turned out to be quite tiny – no more than a coin, but as the Popular Mechanics portal notes, in the future this revolutionary model can have a serious impact on the development of transplantology and moving away from the shortage of organs needed for transplantation. Only in the United States alone, 114,000 people are waiting for their turn for the transplantation of certain organs. In addition, during organ transplantation, people have to take special medications that block the body's rejection of new transplanted organs. According to scientists, bio-printed organs will be able to solve both problems. “One of the main obstacles to creating an analogue of a functioning living tissue was the inability to print complex vascular systems, which in the body serve to transport blood, air, lymph and Continue Reading

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Scientists have created a self-managed robot surgeon for heart surgery

Specialists from the Boston Children's Hospital (USA) have developed and successfully conducted tests of a flexible autonomous robotic catheter that can independently touch the inside of the heart and reach the heart valves. Verification of the invention for autonomous detection of heart valves was carried out on the living hearts of pigs. About the advanced development of scientists reports article published in the journal Science Robotics. At present, surgeons perform operations in the cardiac cavity in two different ways: minimally invasive, when the sternum is not cut, and all actions are performed through a small puncture between the ribs, and by the transsternal method, when access to the heart is opened through the cut sternum. The latter case requires a longer recovery period and can sometimes be accompanied by complications. Minimally invasive operations, in turn, are performed using guided flexible catheters with minimal surgical intervention. The most difficult thing in Continue Reading

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Created technology for the complete destruction of viruses in donor organs

Today, thousands of people need donor organs, but not all receive them. Perhaps a new virus removal technique will solve this problem, since many of the donated organs do not reach the recipients due to infections that make them unsuitable for transplantation. The technology involves washing their cavities and vessels with a non-toxic liquid preservative and destroying bacteria using two types of light. The method was coined by Prof. Marcelo Sipel from the University of Toronto. Previously, physicians had already decontaminated organs by replacing blood with a liquid to kill viruses, but this technology was not as effective as we would like. Ultraviolet light was used for blood disinfection – why not combine these technologies together to get the best result? To translate his ideas into reality, Marcelo Sipel teamed up with Wanderleigh Bagnato of the University of São Paulo, Brazil. They created an apparatus that, as part of a Continue Reading

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Scientists have created a transparent implant for the study of the living brain in real time

Scientists from the University of Minnesota have created a unique See-Shells implant for the skull, which will help unravel the causes of Alzheimer's and Parkinson's diseases and, equally important, find these treatments, as well as other dangerous diseases. The implant is a solid transparent shell created using 3D printing technology. According to the creators of the implant, such a device helps to look into the head and see how diseases or injuries affect the entire organ as a whole. A detailed article on the development and research of scientists was published magazine Nature Communications. “The new device allows us to visualize brain activity and interact with a large amount of surface areas, in this case, the whole cerebral cortex,” explains one of the authors of the design, Suhasa Kodandaramayah. Previously, experts could only observe certain areas of the brain in order to study them in detail. The new tool, See-Shell, Continue Reading

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Created a cure for age-related muscle weakening

The sad fact is that after 35 years, almost every person begins to lose muscle mass and weaken. Of course, this process can be slowed down with the help of physical exercises, but not every person is involved in physical exercise. Especially for those who can not or do not want to keep their body in shape, researchers from the medical department of the University of Texas at Galveston have created a drug to maintain muscle mass. Experimental medicine has already shown its effectiveness and safety in mice. Scientists have learned that one of the main causes of muscle dysfunction and adults is the activity of a protein called nicotinamide N-methyltransferse (NNMT). Being in the muscle tissues, it causes their weakening, therefore the goal of the researchers was to create a medicine that reduces its activity to a minimum. It is known that it was successfully created and acts as Continue Reading

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Created eye drops, allowing you to see in the dark

If our eyes were able to pick up infrared radiation, we could easily distinguish any objects in the dark. The fact is that infrared light comes from almost all the objects around us, but their waves are so long that the photoreceptors of mammalian eyes simply cannot catch them. Researchers at the University of Massachusetts Medical School have developed nanoparticles that can serve as tiny sensors to capture infrared rays and give people and animals night vision. Getting on the eyes, these nanoparticles in the form of droplets are delivered to retinal photoreceptors and attached to them. Being on the cells of the retina, nanoparticles capture long infrared rays and emit short waves in the visible range. These waves are absorbed by the photoreceptors, which send such signals to the brain as if they were visible light on the retina. The effectiveness of the nanoparticles was tested in an experiment Continue Reading

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Scientists from Russia have created composite prostheses for tendons

Biophysicists have created a complete replacement for tendons from polymers and composite materials that do not cause inflammation and irritation, and have tested it on rats. The results of these experiments were presented in the Journal of Biomedical Materials Research. “It is extremely important that implantable materials not only work as connective tissue, but also contribute to its regeneration. This implant provides conditions for the effective formation of strong and morphologically adequate regenerated binder tissue at the site of the defect,” says Vladimir Akatov, a professor at the Institute of Theoretical and Experimental Biophysics RAS in Pushchino. Tearing of ligaments and tendons is one of the most severe and intractable injuries for athletes, which often ends with the completion of their careers. The problem is that molecular biologists and doctors have not yet discovered the hormones or drugs that cause the ligaments to recover, or have found an adequate synthetic Continue Reading

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Scientists have created molecules that neutralize the flu virus.

By according to World Health Organization annually in the world there are from 3 to 5 million cases of diseases of various types of influenza virus, while up to 650 000 cases are fatal. Unfortunately, even in the modern world, science has not yet invented a universal medicine for the most common "seasonal disease." This is explained by the fact that the virus mutates easily, which forces experts to create more and more new types of vaccines. In this case, the principle of vaccination is based mainly on the prevention of the disease. But she does not guarantee that you will eventually not catch any new form of the virus. An international team of scientists from the USA, the Netherlands and Belgium recently published an article in which described in detail the principle of the experimental drug JNJ4796, created on the basis of special selected molecules that mimic the behavior Continue Reading

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Russia has created an artificial children's heart with a two-year service life

Heart transplantation saves thousands of lives, but waiting for a donor organ can last quite a long time. Artificial hearts that already exist in the USA, but are worth crazy money, help us to live to this point. Researchers from the Russian military plant Progress have mastered the production of miniature pumps, which, with their low cost, provide at least two years of life. Artificial hearts are designed for children, and are comparable in size to candy. Special conditions were required for assembling mechanisms as accurate as clocks. The workshop in which artificial hearts are assembled is separated from the plant foundation by dampers – devices that absorb any vibrations. Such conditions are necessary for maximum accuracy, because the pumps consist of parts the size of poppy seeds, which are interconnected under a microscope. In order not to scratch them, engineers use brass tools and wooden sticks – otherwise, blood Continue Reading