GOU VPO "Bratsk State University" (Bratsk)
Эта статья опубликована сборнике научных трудов "Проблемы и перспективы современной науки" с материалами Четвертой Международной Телеконференции "Фундаментальные науки и практика" - Том 3 - №1. - Томск - 2011.
Recently the problem of violations of reproductive functions of the body - reproductive health - was particularly disturbing sound. Reproductive health indicators are increasingly being considered at present as a sensitive indicator of ecological trouble [YP Gichev, 2007]. An overwhelming number of maximum permissible concentration (MPC) of chemical substances was set without regard to their effect on pregnancy and the reproductive system of the human body. At the same time, literature data indicate that pregnancy significantly alters the reactivity of the female body, and often increases its sensitivity to adverse environmental factors, among which primarily include chemicals. Must be borne in mind that some substances reach the environment in low concentrations, may interact with each other, leading to a summation and potentiation of toxic effect. Among the main criteria for the activity of pollutants in the problem of contamination of biological chain is essential given its ability to cause fetal death, decreased fertility and congenital malformations [M. J. Studenikina, 2001]. Facts about these or other reproductive harm due to the influence of various pollutants have been obtained in industrial agglomerations of many regions of the Russian Federation and in several industrial cities.
Currently, the Bratsk Irkutsk Region has developed environmental emergencies. The city is located in the heart of the East-Siberian region and is a major industrial hub EFR, its territory is divided into three districts - Central, Padunsky and Right Bank. The greatest amount of specific pollutants enter the atmosphere from sources of non-ferrous metallurgy, pulp and paper industry, vehicles. Very high levels of pollution due to high content of formaldehyde in ambient air, carbon disulfide, benzo (a) pyrene, nitrogen dioxide, hydrogen fluoride. Table 1 shows the priority pollutants Bratsk and their effects on the reproductive system [VM Boev, VN Dunayev, VN Averyanov et al, 2004, BA Gurevich, SL Avaliani, GI Tikhonov, 2004, MF Savchenkov, 2002, FF Dautov, 2002, VM Boev, 2004].
Table 1 - Contaminants that violate the reproductive
Women's Health
Name
of substance
|
Violation
|
Hydrogen sulfide
|
Diseases of the genitourinary
system, changing the timing of fetal development, fetal hypotrophy,
congenital anomalies
|
Fluoride
|
Perinatal mortality, congenital
anomalies, congenital malformations
|
Formaldehyde
|
Carcinogenic effect, spontaneous
abortions, decreased indices of physical development, birth defects,
malformations
|
Sulfur dioxide
|
Asphyxia, embryo-toxic effects,
congenital malformations
|
Carbon monoxide
|
Asphyxia, embryo-toxic effects,
congenital malformations
|
Nitrogen dioxide
|
Embryo-toxic effects, congenital
malformations
|
Benzo (a) pyrene
|
Birth defects, developmental
defects, cancers of the reproductive system
|
The effect of the summation
|
Hydrogen sulfide,
Formaldehyde,
Carbon monoxide
|
The birth of LBW infants
|
Sulfur dioxide,
Nitrogen dioxide,
Benzo (a) pyrene
|
Birth krupnovesnyh children
|
Causal and effectual relation between the pollution and unhealthy influence on reproducting health allows to expose the effecting degree of unhealthy influense concentrations of number matters on frequency of spontaneous abortions, stillborn, genitor-urinary diseases, of little weight and great weight of new-borns, boetus's asphyxia and number of inborn anomalys. Statistical analysis of materials of town's timber industrial department and Bratsk's centre of state monitoring service datas allowed to make next conclusions with using the methods of mathematicals analysis and estimation of relative risk. The quantity spontaneous abortions and stillborns depends on concentration of the formaldehyde and the hydrogen fluoride on 46,99 per cent and 63,27 per cent in the Central area and 50,4 per cent and 64,0 per cent in the Padun area accordingly.
The carbon's oxide and the formaldehyde; the sulphur's dioxide and benzopiren; the carbon's oxide and the sulphur's dioxide; the sulphur's dioxide, the formaldehyde and the hydrogen fluoride have a summation's effect, it conductives to increase of quantity of little weight and great weight children and new-borns with asphyxia and with inborn anomalus. The contrations of the sulphurettretted hydrogen, the formaldehyde, the carbon's oxide, the sulphur's dioxide, a nitrous oxide and the hydrogen fluoride are not the main factors in the forming of frequency of cases in origin of inborn anomalys, but its are rery important. The influence of the sulphuretted hudrogen, the formaldehyde and the carbon's oxide on the forming of little weight of new-borns and also the influence of the sulphur's dioxide, a nitrous and benzopiren on the forming of great weight of new-borns are increased annually. The risk's estimation to population's reproducting health from the technogen pollution's influence is characterized as very higt. In the reproductive health of women stands out except for perinatal pathology and pathology of newborn infants, and perinatal and infant mortality, and several criteria of ecological trouble:
• termination of pregnancy;
• toxicosis of the second half of pregnancy;
• spontaneous abortion;
• premature birth;
• premature expulsion of the fetal treatment;
• anomalies of labor activity.
Long-term study found that women residing in a polluted industrial city, the third generation show the so-called "cumulative effect" of an adverse environment of harmful pollutants, which is expressed in reducing their reproductive capacity, frequent manifestations of pathology of pregnancy, childbirth and the postpartum period, as well as in slow recovery from childbirth. In the context of unfavorable demographic situation in Russia, the above facts indicate that an important reserve for improvement is the need to government decision making and implementation of concrete actions aimed at improving the environment.
|
Комментарии
2011-03-0214:25:39 Наибольшее влияние на появление врожденных аномалий дают соединения никеля, загрязнение окружающей среды которыми оповещено в моей статье на этой же телеконференции.