Ранее были выявлены взаимосвязи аутоантител, специфичных к эстрадиолу (Es) и прогестерону (Pg), с содержанием гормонов в сыворотке крови здоровых женщин и больных раком молочной железы. Цель исследования -выявить предполагаемые взаимосвязи антиидиотипических аутоантител к Es и Pg с содержанием гормонов в сыворотке крови здоровых женщин и больных раком молочной железы в постменопаузе. Материал и методы. Концентрации Es и Pg исследовали с помощью конкурентного метода иммуноферментного анализа в сыворотке крови 206 здоровых женщин и 480 больных раком молочной железы. В этих же образцах сыворотки крови исследовали уровни антител и антиидиотипических антител к Es и Pg с помощью конкурентного метода иммуноферментного анализа. Результаты. Высокие значения индивидуальных соотношений гормонов (Pg/Es>4,0) были ассоциированы с низким риском рака молочной железы (OR=0,3; р<0,0001), высокими значениями индивидуальных соотношений специфических аутоантител класса А (Iga-Pg1/Iga-Es1>1,0; р=0,004) и с высокими значениями соответствующих антиидиотипических антител класса G (IgG-Pg2/IgG-Es2>1,0; p<0,001) у здоровых женщин, но не у больных раком молочной железы. Заключение. Впервые обнаружены ассоциации антиидиотипических антител класса G к Es и Pg с гормональным статусом у здоровых женщин. Подобные иммуно-гормональные взаимосвязи у больных раком молочной железы отсутствовали. Это может служить основанием для дальнейших исследований механизмов иммунорегуляции канцерогенеза у человека.Ключевые слова: рак молочной железы, антиидиотипические антитела, эстрадиол, прогестерон.
A personalized lung cancer risk assessment is important for disease prevention.The aim of the studywas to estimate a significance of immunoanalysis of antibodies to benzo[a]pyrene, estradiol and progesterone for lung cancer risk prediction in men with respect to age and smoking.Material and methods. Serum antibodies to benzo[a]pyrene, estradiol and progesterone in the blood serum of 620 healthy men (279 smokers) and 827 lung cancer patients (627 smokers) were studied using semi-quantitative enzyme immunoassay.Results. The high lung cancer risk was observed in smokers aged over 55 years: oR=15.4 (11.5–20.8 95 % ci). the lung cancer risk in this group of patients was significantly lower when their levels of antibodies to benzo[a]pyrene and to estradiol were lower than those to progesterone: oR=3.2 (2.0–5.0). the lung cancer risk was higher when the personal levels of antibodies to benzo[a]pyrene and to estradiol were higher than the levels of antibodies to progesterone: oR=20.0 (10.5–38.1).Conclusion. The immunoassay of the blood serum antibodies specific to benzo[a]pyrene, estradiol and progesterone could be useful for determination of the lung cancer risk in men.
Aim. To study current trends in the incidence and mortality of prostate cancer in Kemerovo Region.Materials and Methods. We conducted a descriptive retrospective study by investigating cancer registry of Regional Clinical Oncology Dispensary collected in 2010-2018.Results. During the study period, 4965 cases of prostate cancer have been documented. The average standardised incidence rate was 50,080/0000 (95% CI = 46.01; 54.43). We detected a trend towards an increase in standardized incidence from 32.410/0000 in 2010 (95% CI = 28.76; 36.05) to 73.000/0000 in 2018 (95% CI = 67.86 – 78.15) with the average annual increment of 10.22% (р < 0.0001). A significant proportion of cases (48.17% in 2018) occurred in elderly (≥ 70 years). Standardized mortality rates increased from 9.240/0000 in 2010 (95% CI = 7.29; 11.19) to 28,830/0000 in 2018 (95% CI = 25.51; 32.15), average annual increment 13.99% (р = 0.002). Component analysis showed that an incidence increase by 155.81% is primarily associated with existing risk factors (128.19%) rather than with population aging (16.71%) or their combined effect (10.91%).Conclusion. Currently, there is a clear trend to increasing incidence and mortality from prostate cancer in Kemerovo Region, mainly due to existing risk factors.
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