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Found results: 3409

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Melanopsin will help to adjust the biological clock

The researchers created genetically modified mice with melanopsin-expressing cells sensitive to diphtheria toxin. Treatment of the retina of 8-week-old mice with this toxin did not affect their visual abilities at all, but completely deprived the biological clock of the animals of sensitivity to light.

17.06.2008
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Tumors are provocateurs

The authors injected "provoking" human breast cancer tumor cells into animals simultaneously with passive "reacting" cells of human origin. Such passive cells formed extremely rapidly growing tumors, but only in the presence of provoking malignant cells.

16.06.2008
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microRNA-155 and B-lymphocytes: mutate, but in moderation!

By controlling the level of the AID enzyme, microRNA-155 regulates the fight of the immune system against microbes, while preventing the formation of very aggressive malignant diseases: leukemia and B-cell lymphomas.

16.06.2008
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A vegan should be in jail!

A 12-year-old Scottish woman, put on a strict vegetarian diet by her parents, was hospitalized with a severe bone development disorder. Her spine is similar to the spine of an 80-year-old old woman. This is not the first case. For example, last year in the United States, a vegetarian couple was sentenced to life imprisonment for bringing their six-week-old child to starvation.

11.06.2008
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How to monitor the immune system

Scientists at the University of California have developed a contrast agent for positron emission tomography, which allows in vivo monitoring of the immune response during the development of many diseases.

11.06.2008
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Brain helps fight Cancer

Beta-endorphin-producing neurons not only improve a person's morale, but also play a role in regulating stress reactions and immune functions that provide control over the formation and progression of tumors.

10.06.2008
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DLC1 is another anti–oncogene

Tumor suppressor genes, or anti-oncogenes, perform important functions in the work of intercellular interaction systems that prevent uncontrolled cell growth and proliferation.

10.06.2008
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Sugar substitutes? You can't fool the brain!

Despite the fact that sugar and sweeteners initiate the same taste recognition mechanisms (people are not able to distinguish their solutions by taste), sugar activates the brain regions associated with the formation of a sense of pleasure more strongly.

09.06.2008
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United Biomedical and Biopharmacological Russia

"Russia is on the threshold of major decisions on the development of the domestic pharmaceutical and drug industry on the latest scientific and technical basis," said Andrei Kokoshin, Deputy head of the United Russia faction, Academician of the Russian Academy of Sciences.

07.06.2008
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"Emergency transplant"

In New York, it is planned to create an ambulance service to preserve fresh corpses. This will save the organs of the deceased for the needs of transplantation.

06.06.2008
News

HIV prevention: cream instead of circumcision

The authors found that skin keratin serves as a barrier between Langerhans cells and HIV and prevents infection. As part of the study, they applied estriol cream, which has been the standard treatment for post-menopausal vaginal atrophy for more than 30 years, to the inner surface of the foreskin and assessed the level of keratinization of the region using contact smears.

06.06.2008
News

Look inside a living cell

To be fair, it should be noted that in recent years two more methods of optical microscopy have been developed, allowing to see even finer details in living cells.

06.06.2008
News

Let's hit the arthritis with alcoholism!

Scientists at the Karolinska Institute found that alcohol consumption is associated with a reduced risk of developing rheumatoid arthritis and the more respondents indulged in red and white, the less the risk of "catching" this autoimmune inflammation of the joints became.

06.06.2008