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Experts cells and Institute of Genetics, Institute of Animal Physiology and classification of the Russian Academy of Sciences, in Russia a new academic journal "Russian nanotechnology" the report said, they will size less than 100 nanometers (a nanometer is one millionth mm) of silicon dioxide fine particles selected as the object of study of this substance in the production of rubber products, cosmetics and pharmaceutical process often used as a filler material or catalyst component.

Russian researchers selected two mouse, A mouse species "cellular immunity" prominent characteristics, namely their immune T cells are directly against the strong ability of pathogens. B mice of "humoral immunity" capability known that their B cells to produce antibodies and immune response than the outstanding guide.

Researchers put A, B two mouse respectively divided into three groups seventy-eight. In Group A, the nose of each mouse was added dropwise in 25 microliters of suspension, wherein the particle size of the silicon dioxide is less than 100 nanometers. Group B mice nasal intake of silica particles over 100 nm. Group C was dropped physiological solution. After 4 hours, the researchers extracted blood and lungs and bronchial wipes the inner surface of the mice in each group.

The results showed that inhalation of silicon dioxide particles leads to a number of blood tests to change the value of A mice, which significantly increased the total number of white blood cells. The B mice not only leukocytosis, and their lungs early immune response to inflammation. Compared with inhaled size exceeds 100 nm silicon dioxide particles, such particles less than 100 nanometers influence on the immune system to be much more significant.

Researchers involved in the study of Moche gold that the above changes caused by nanoparticles is good or bad at present elusive. Leukocytosis and lung tissue of the immune response and other phenomena described airway inflammation, and is likely to continue to develop. At the same time, the body's ability to withstand respiratory tract infection is also enhanced. So if you want to understand the impact of nanoparticles on the body, long-term observation is needed.


 

 

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