ASSOCIATION OF DNA REPAIR GENE POLYMORPHISM WITH CHROMOSOMAL ABERRATIONS IN THE BLOOD LYMPHOCYTES OF PATIENTS WITH LUNG CANCER

Analysis of association, between several DNA repair gene polymorphisms and the level of chromosomal aberrations (CAs) in lymphocytes was performed in two groups: a group of 215 patients with lung cancer and a control group of 152 donors. In the group patient with lung cancer the level of CAs shows a significant increase in the carrier of genotypes: XPD TG and XPD GG vs XPD TT. In the control group level of CAs shows a significant increase in the carrier of genotype ADPRT ТС vs ТТ

ANTIBODIES TO BENZO[A]PYRENE IN SERUM OF PATIENTS WITH NON-SMALL CELL LUNG CANCER

The features of immune response to chemical carcinogen benzo[a]pyrene (Bp) at the patients with non-small cell lung cancer (NSCLC) are investigated. The isotypical distinctions in formation of antibodies (Ab) to Bp at the men with NSCLC in comparison with healthy are revealed. There were more often observed the high levels of IgG Ab-Bp at the men with NSCLC. Thus risk of occurrence NSCLC grows almost in 2 times at high levels of Ab-Bp of a class G

THE ASSOCIATION OF IMMUNE RESPONSE TO XENOAND ENDOBIOTIKS AND THEIRS BIOTRANSFORMATION ENZYME GENE POLYMORPHISM WITH CONGENITAL MALFORMATIONS OF THE FETUS

The correlation between immune response to benzo(a)pyrene and progesterone in combination with detoxification enzyme gene polymorphism (CYPIA2*1F and GSTTI) and the occurrence of congenital malformations of the fetus was revealed. It is shown that at high ratio of IgA-antibodies to benzo(a)pyrene and to progesterone in conjunction with the mutant allele of the gene CYPIA2*1F and the deletion genotype of the gene GSTTI chance of the reproductive pathology developing increases to 41 times

АНТИТЕЛА К БЕНЗО[А]ПИРЕНУ, ЭСТРАДИОЛУ И ПРОГЕСТЕРОНУ У БОЛЬНЫХ РАКОМ МОЛОЧНОЙ ЖЕЛЕЗЫ В ПОСТМЕНОПАУЗЕ

The identification of women who are at high risk of developing breast cancer plays a key role in chemoprevention of breast cancer selective estrogen receptor modulators. purpose: To study specific immune responses to chemical carcinogens and sex steroid hormones associated with breast cancer in postmenopausal women. material and methods. Serum IgA-antibodies specific to benzo[a]pyrene, estradiol and progesterone were studied in 203 non-smoking healthy women and 469 non-smoking breast cancer patients (125 with ER– and 344 with ER+) using semi-quantitative enzyme immunoassay. results. The low levels of all three antibodies were revealed in 53.2 % of healthy donors, in 47.2 % of breast cancer patients with ER– and in 40.7 % of patients with ER+. The high levels of all three antibodies were found in 12.3 %, 18.4 % and 26.5 % of cases, respectively. In the studied groups, the levels of antibodies to estradiol and progesterone were correlated with the levels of antibodies to benzo[a]pyrene (rs=0.54–0.7, p<0.0001). Conclusion. Immunoassay of antibodies to exogenous and endogenous antigens could be useful for determining risk of developing ER+ breast cancer and preventing administration of tamoxifen and others selective modulators of estrogen receptors. Active immunization against exogenous chemical carcinogens could increase the levels of antibodies to endogenous steroids, thus stimulating breast cancer.Выявление женщин с высоким риском возникновения рака молочной железы является ключевым звеном в химиопрофилактике этого заболевания селективными модуляторами эстрогеновых рецепторов. Цель исследования – изучить специфические иммунные реакции на химические канцерогены и половые стероидные гормоны, ассоциированные с раком молочной железы, у женщин в постменопаузе. материал и методы. С помощью полуколичественного иммуноферментного анализа были изучены сывороточные антитела класса А, специфичные к бензо[a]пирену, эстрадиолу и прогестерону, у 203 здоровых некурящих женщин и 469 некурящих больных раком молочной железы (125 женщин с ER– и 344 с ER+  статусом опухоли). результаты. Низкие уровни всех трех антител были обнаружены у53,2 % здоровых женщин, 47,2 % больных раком молочной железы с ER– статусом опухоли и 40,7 % с ER+. Высокие уровни всех трех антител встречались в 12,3 %, 18,4 %, 26,5 % случаев соответственно. Во всех группах уровни антител к эстрадиолу и прогестерону коррелировали с уровнями антител к бензо[a]пирену (rs=0,54–0,7, p<0,0001). Заключение. Иммуноанализ антител к экзогенным и эндогенным веществам может быть полезным для определения риска возникновения ER+ рака молочной железы и превентивного назначения тамоксифена и других селективных модуляторов эстрогеновых рецепторов. Активная иммунизация против экзогенных химических канцерогенов может увеличивать уровни антител к эндогенным стероидам и таким образом стимулировать рак молочной железы

ANTIBODIES TO BENZO[A]PYRENE, ESTRADIOL AND PROGESTERONE IN THE POSTMENOPAUSAL BREAST CANCER WOMEN

The identification of women who are at high risk of developing breast cancer plays a key role in chemoprevention of breast cancer selective estrogen receptor modulators. purpose: To study specific immune responses to chemical carcinogens and sex steroid hormones associated with breast cancer in postmenopausal women. material and methods. Serum IgA-antibodies specific to benzo[a]pyrene, estradiol and progesterone were studied in 203 non-smoking healthy women and 469 non-smoking breast cancer patients (125 with ER– and 344 with ER+) using semi-quantitative enzyme immunoassay. results. The low levels of all three antibodies were revealed in 53.2 % of healthy donors, in 47.2 % of breast cancer patients with ER– and in 40.7 % of patients with ER+. The high levels of all three antibodies were found in 12.3 %, 18.4 % and 26.5 % of cases, respectively. In the studied groups, the levels of antibodies to estradiol and progesterone were correlated with the levels of antibodies to benzo[a]pyrene (rs=0.54–0.7, p<0.0001). Conclusion. Immunoassay of antibodies to exogenous and endogenous antigens could be useful for determining risk of developing ER+ breast cancer and preventing administration of tamoxifen and others selective modulators of estrogen receptors. Active immunization against exogenous chemical carcinogens could increase the levels of antibodies to endogenous steroids, thus stimulating breast cancer