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Effect of radiation and non-radiation environmental factors on children hematopoietic system

2016; Volume: 21; Linguagem: Inglês

10.33145/2304-8336-2016-21-191-203

2313-4607

V. Bebeshko, K. M. Bruslova, V.V. Stankevych, N. M. Tsvietkova, L. Lyashenko, S. G. Galkina, T. Pushkaryova, V.I. Kolos, Olga Kuznetsova, L. Honchar, S. M. Yatsemyrskii, Yves Samson,

Ukraine: War, Education, Health

Identification of impact of radiation and non radiation environmental factors on development of hematopoi etic abnormalities in children and justification of criteria for the increased risk groups of hematologic diseases.The results of clinical and hematological survey of 1465 children living in Kyiv, Zhytomyr and Chernihiv regions for the period from 2008 to 2014 were presented. There were 777 children with anemia, 466 with changes in hemogram, 191 with acute leukemia. The irradiation doses, correlation of integrated pollution degree of territories with hematopoietic parameters and course hematologic diseases were estimated. Metal con tent in hair, nails, and blood was determined in 121 children.We have found the most common cause of anemia in children and peculiarities of acute leukemia depend ing on the area integrated contamination. Number of children living in contaminated areas with pro B ALL and T ALL having an initial leukocytosis and unfavorable course of the disease was higher compared to the number of patients from moderately polluted regions (r = 0.47). There is a direct correlation between percentage of children with monocytosis and degree of territory contamination: the 20.2 % of such children lived in the intensively polluted areas and 10,3 % in moderately contaminated ones (p < 0.05). Content of Pb, Cu, Cr, Mn, Zn in biological tissues did not exceed the permissible MAC. Level of Zn in all children was at the lower normal threshold. Individual levels of metals in hair, nails and blood did not depend on gender of patients and their radiation doses. Criteria of increased risk of hematologic diseases in children living in ecologically unfavorable regions were grounded.Radiation and non radiation environmental factors influencing the development of changes in hematopoiesis and characteristics of the blood system diseases in children play a role in leukeima development processes. These findings are the basis for a further research in the field of radiobiology and ecology.Meta. Vyznachyty vplyv radiatsiy̆nykh ta neradiatsiy̆nykh chynnykiv dovkillia na rozvytok zmin v gemopoezi u ditey̆ ta obґruntuvaty kryteriï formuvannia grupy pidvyshchenogo ryzyku rozvytku gematologichnoï patologiï.Materialy i metody. Predstavleni rezul'taty kliniko gematologichnogo obstezhennia 1465 ditey̆, zhyteliv Kyïvs' koï, Zhytomyrs'koï ta Chernigivs'koï oblastey̆ za period z 2008 r. po 2014 r. Z nykh: 777 ditey̆ z anemiiamy, 466 – zi zminamy v gemogramakh, 191 – z gostrymy ley̆kemiiamy. Otsiniuvaly dozy oprominennia ditey̆, zv’iazok stupenia integ ral'nogo zabrudnennia terytoriy̆ z pokaznykamy gemopoezu ta perebigom gematologichnoï patologiï. U 121 dytyny vyznachaly vmist metaliv u volossi, nigtiakh i krovi.Rezul'taty. Vstanovleni nay̆bil'sh chasti prychyny rozvytku anemiy̆ u ditey̆, osoblyvosti perebigu gostrykh ley̆ kemiy̆ zalezhno vid stupenia integral'nogo zabrudnennia terytoriï. Dolia ditey̆, zhyteliv duzhe zabrudnenykh tery toriy̆ z pro V GLL ta T GLL z initsial'nym ley̆kotsytozom ta nespryiatlyvym perebigom zakhvoriuvannia, bula bil' shoiu porivniano z doleiu khvorykh pomirno zabrudnenykh regioniv (r = –0,47). Vstanovlenyy̆ priamyy̆ koreliatsiy̆nyy̆ zv’iazok mizh vidsotkom ditey̆ z monotsytozamy ta stupenem zabrudnennia terytoriï: na duzhe zabrudnenykh tery toriiakh prozhyvalo 20,2 % takykh ditey̆, na pomirno zabrudnenykh – 10,3 % (r < 0,05). Vmist Pb, Cu, Cr, Mn, Zn u biologichnykh tkanynakh ditey̆ ne perevyshchuvav dopustymi vidnosno GDK. Riven' Zn v usikh ditey̆ znakhodyvsia na nyzhniy̆ mezhi normatyvnogo. Indyvidual'ni rivni metaliv u volossi, nigtiakh ta krovi ne zalezhaly vid stati khvorykh ta dozy oprominennia. Obgruntovani kryteriï formuvannia grupy pidvyshchenogo ryzyku rozvytku onkogemato logichnoï patologiï u ditey̆, iaki prozhyvaiut' v ekologichno nespryiatlyvykh regionakh.Vysnovky. Radiatsiy̆ni ta neradiatsiy̆ni chynnyky dovkillia vplyvaiut' na rozvytok zmin v gemopoezi ta osoblyvosti perebigu zakhvoriuvan' systemy krovi u ditey̆, vony vidigraiut' rol' v mekhanizmakh ley̆kozogenezu. Otrymani dani ie pidґruntiam dlia podal'shykh doslidzhen' u sferi radiobiologiï ta ekologiï.