the Toxins in cigarette smoke that have placed themselves on a variety of surfaces (eng. the thirdhand smoking), affect the weight and development of blood cells in mice.
Scientists from the Lawrence Berkeley National Laboratory found that newborn mice, kept for 3 weeks in the cells with the material is rich in tobacco smoke, weighed significantly less than mice in the control group. Clearly visible (as in neonates and in adults) have also been changes in the number of different groups of cells associated with the immune system. These changes are associated with reactions, inflammatory and allergic.
In the latest study, experts from Berkeley Lab collaborated with colleagues from the University of California San Francisco and Medical University in Nanjing. The results of the study appeared in the written form of Scientific Reports.
we Suspected that children are most vulnerable because of the immaturity of the immune system, but so far we haven’t had too much solid evidence. [...] we Found that contact with prisoners substances from the smoke of slow weight gain in newborn but not in adult mice, says Because of the hang of the Berkeley Lab.
Scientists say that, fortunately, the effect was temporary. A few weeks after the end of exposure mice began to catch up in weight rodents from the control group.
the Researchers add that human children are more vulnerable because during the critical period of development of the immune system come in contact with contaminated surface during raczkowania and teething.
risks associated with thirdhand smoking put yourself clearly the case in 2010 when Hugo Destaillats, Mohamad Sleiman and Lara green heart of Budapest from Berkeley Lab have proven that nicotine reacts with ozone and nitric acid in the air. After the reaction with nitrogen there are terrible carcinogenic nitrozaminy, in particular, the PNA, NNK and NNN. In turn, the reaction with ozone form very small particles. The ventilation in this case is inefficient, they really so small that we breathe them or wchłaniamy with food. In addition, after touching surfaces that come in contact with smoke, they penetrate through the skin.
more recent studies Hanga, Jiana-Hua Mao and Altafa Sarkera showed that thirdhand smoking leads to genetic instability in humans, mouse, and rat cell lines.
In the latest research Destaillats, the green heart of Budapest, to Hang and Mao was placed for 3 weeks in mouse cells impregnated with tobacco smoke, bits of cotton, with an area of 5 sq. cm Focused on the development implications related to the weight and the hematopoietic system in 2 age groups: neonates and young adults. Compared them with a control group.
Oh, how many changes of weight, it was seen only in infants, but the changes within populations of blood cells had occurred in both groups. Were noted to have higher levels of blood platelets and some white blood cells. Newborns mentioned above the level of eosinophils, adult females of neutrophils and the adult males basophils. All mice had more lymphocytes. the All of these leukocytes associated with inflammation and allergic reactions. Impact on the number of cells was visible after the exposure; newborns changes persisted for at least 14 weeks and the young adult 2 weeks, sums up Mao.
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