Date: a week ago   Category: Studies

Bad genes" aren't guilty of development of caries, scientists - RIA Novosti, say 9/13/2017


Bad genes" aren't guilty of development of caries, scientists - RIA Novosti, say 9/13/2017
MOSCOW, 13 Sep – RIA Novosti. Variations in the genes operating growth and life of teeth don't influence behavior of microflora of a mouth and probability of development of caries in any years of life, geneticists in article published in the Cell Host & Microbe magazine say. "Restriction of the consumption of sugar and maintenance of the correct acid-base balance already rather long time are pillars of modern stomatology. We have found several concrete species of the microbes capable to get into our mouth from the external environment and to cause caries" — Karen Nelson from Craig Venter's (USA) Institute tells. © Fotolia/Ridouchenye have found a microbe which interferes with development кариесаВ the last years scientists actively argue on whether there are any genetic factors making the person more predisposed to development of caries and emergence in his mouth of those strains of streptococci and other bacteria which are associated with emergence of a raid on teeth and destruction of their enamel today. To search of similar variations of DNA as Nelson and her colleagues note, stirs that microflora can change much stronger and under the influence of a set of other factors, such as diet, hygiene and existence or lack of addictions. All this complicates search of "bad versions the" of genes operating growth and life of teeth and doesn't allow to say that they don't exist unambiguously. "We conducted our research on children for two reasons. We assumed that microflora of their mouth will change very quickly in process of their growing, and besides, children usually live together, eat one food and have no addictions. It has allowed us to understand better what factors influencing their microflora were unique and what were the general" — the geneticist continues. © Gnuskovrossiysky scientists have created Flickr / NITU MISIS, Sergey eternal antikariyesny нанопломбыДля search of similar factors scientists have gathered two groups of children, one of whom consisted of the monoovular twins possessing identical DNA and an identical set of mutations, and the second – from the ordinary twins who had different genomes. Having collected tests of a raid from teeth of each of them, scientists have analysed specific structure of microbes and have tried to understand whether variations in genes of people influence how many useful and dangerous bacteria live in their mouth. Carrying out this analysis, scientists made the following assumption: in case "bad genes" really exist then the structure of microflora and frequency of development of caries in monoovular and "ordinary" twins would be different. If microflora the diet and hygiene then such distinctions shouldn't be generally operates. The situation was a little more difficult, than it was imagined by scientists. Similar distinctions as it has appeared, were characteristic children of kindergarten age, however at achievement of a mark in 10-11 years they almost completely disappeared, and the diet and hygiene began to influence specific structure of microbes more. © Photo: Oxilia et al. / Naturestomatologi already existed in to

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