Russia finds the impact on organism of nanometer particle varies with immune characteristic

Russia finds the impact on organism of nanometer particle varies with immune characteristic
As nanotechnology is being developed constantly, people take in the chance of the nanometer particle and increase gradually. In order to study the impact on organism of this kind of particle, Russian researchers have carried on the experiment to the little mouse, find nanometer particle will lead to the fact little leucocyte of mouse increase, intensity its and it influences to be can be different because immune characteristics of the little mouse are different finally. Cell and research institute of science of heredity, animal of Russian academy of sciences are classified and expert of the physiologic research institute, say they less than size 100 nanometers (1 nanometer is mean 1/1 million millimetres) at new one the intersection of Russia and academic publication " the intersection of Russia and nanotechnology " Two oxidize on silicon on particle to last research object,use as for packing often by materialing or catalyst composition during producing products, cosmetics and pharmacy courses rubbery the material. The Russian researcher has selected two kinds of little mice, A plants " cell immunity " of the little mouse With conspicuous characteristics, the ability that namely their immune T cells resist the pathogen directly is relatively strong. B The ones that plant the little mouse " The humoral immunity " Ability is good at, the immunoreaction that namely their B cells produce antibodies and guide is relatively outstanding. Scientific research personnel both divide A, B two kinds of little mice into 3 groups separately, seven or eight for each group. In group A, drip, enter, 25 rise, suspend liquid a little in the each little nose of mouse, two among them oxidizes the particle size of silicon and is smaller than 100 nanometers. Two that the nasal cavity of little mouse of group B takes in oxidizes over 100 nanometers of silicon particle. Third group is dripped into physiological solution. 4 hours later, researchers drew the superficial polishing things in the blood specimen, lung and bronchus of every group of little mice. The analysis result reveals, it causes the multiple blood testing value of A one kind of little mice to change to suck and oxidize the silicon particle two times, among them the total number of leucocytes rises notably. And B kinds of little mouse not only leucocyte increase, but also lung its appear, direct early immunoreaction of inflammation against. Compared with sucking the size and oxidizing the silicon particle over two of 100 nanometers, it is much more prominent to be smaller than 100 nanometers of impacts on immune system of this kind of particle. Participate in the the intersection of scientific research personnel and assorted gold of research point out nanometer above-mentioned change that particle initiate good or bad and at present difficult to down the final conclusion. Leucocyte increase and lung organize, appear immunoreaction prove respiratory tract appear inflammation, and may continue developing. But meanwhile, the ability that the organism resists the airway infection is being strengthened. So if want to understand the impact on organism of nanometer particle in depth, must observe for a long time. Don't assorted gold thinks yet, the aforesaid is found but also have realistic meanings, it reminds the job to protect experts consider making the corresponding health standard, in order to select the one with conspicuous characteristics of some immunity to be engaged in nanometer material production.

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