Scientists from the University of Michigan have found that dopamine falls and fluctuates during a migraine attack. Dopamine is a neurotransmitter that regulates emotions, motivation and sensory perception. Perhaps the specialists’ discovery will lead to the development of new methods in migraine treatment, UPI.com reports.

Surgical interventions that involve prolonged use of anesthesia may cause unpleasant consequences. According to The Daily Mail, some brain damages were observed in patients under general anesthesia. And their effect persists for up to five days. British scientists have tested the effect produced by oxygen starvation (the result of anesthesia and insufficient oxygen supply during surgery).

Accordint to "Remedium", "Infectex" company has successfully carried out clinical studies of SQ109 preparation in patients with pulmonary tuberculosis with multiple drug-resistant pathogens. So, after half a year of experimental therapy, the incidence of bacterial overgrowth has increased up to 80% compared with standard therapy plus placebo (61%).

There are more evidences that insulin performs a number of important functions in the brain. In the course of research, an insulin resistance, its decreased level in the cerebrospinal fluid and disturbed transmission of insulin signals in the brain were revealed in people suffering from Alzheimer's disease. Specialists from the University of Rush have suggested that apparently, an insulin spray will positively affect the cognitive functions in these people.

The scientists still do not know the cause of 10 to 15% of cases of infertility and 50% of cases of usual (multiple) miscarriage. Researchers from Baylor College of Medicine have revealed a new mutation that reduces women's reproductive success and fertility, Zee News says.

Modern technologies, including three-dimensional printing, do not allow creating a branched network of blood vessels right up to the capillaries. This is necessary for the oxygen and nutrients delivery providing a tissue growth. A team of researchers from the US is close to solving this problem, Eurek Alert reports.

According to RIA News, it is known that the University of Newcastle became the first institution in the country that received a license for artificial insemination procedures using DNA of three people. The license was issued by the Ministry of Health. The law that permits an artificial insemination using the material of three people came into force in December 2016.

Chinese scientists have developed a new test that shows the blood group in a few seconds. The accuracy of the test is almost 100%, The Daily Mail reports. This is a real breakthrough, because all modern tests require a lot of time and complex equipment. The new method allows to determine the blood group to any person practically.

According to The Hindu, scientists have developed a high-resolution retinal prosthesis, using nanowires and wireless electronic systems. The prosthesis helps nerve cells in the human retina to respond to light. This technology can help millions of people with neurodegenerative diseases affecting vision.

Obsessive-compulsive disorder (OCD) is characterized by the occurrence of involuntary obsessive thoughts (obsessions) and attempts to get rid of them by means of obsessive actions (compulsions). The scientists of the University of Würzburg have revealed a protein that plays an important role in the development of OCD, UPI.com reports.