The influence of psychoemotional status on metastasis of lewis lung carcinoma and hepatocarcinoma-29 in mice of C57BL/6J and CBA/LAC strains

Aim: To study the influence of psychoemotional status on the development of experimental lung metastases of strain-specific murine Lewis lung carcinoma in C57BL/6J mice and hepatocarcinoma-29 in CBA/Lac male mice. Materials and Methods: Sensory contact model was used for generating animals with repeated experience of social victories or defeat in daily agonistic interactions. Tumor cells were injected into the tail vein after 20 days of agressive confrontations and the number of metastases in the lung was calculated 16 days later. Results: The experimental metastasis is shown to develop differently in mice with opposing social experience: the winners of both strains had significantly less metastases in the lung than the losers. Conclusion: The results obtained indicate that psychoemotional status affects Lewis lung carcinoma and hepatocarcinoma-29 metastasis in male mice.Цель работы — исследование влияния психоэмоционального состояния на метастазирование линейноспецифических опухолей — карциномы легкого Льюис у мышей линии C57BL/6J и гепатокарциномы-29 у мышей линии CBA/Lac. Материалы и методы: для получения самцов мышей с повторным опытом социальных побед и поражений в ежедневных агрессивных взаимодействиях была использована модель сенсорного контакта (на протяжении 20 дней). Клетки опухолей вводили в хвостовую вену животных. Количество метастазов в легких подсчитывали через 16 дней после перевивки опухоли. Результаты: показано, что метастазирование в легкие протекает неодинаково у мышей с различным психоэмоциональным состоянием: у мышей с опытом побед обеих линий количество метастазов в легких было существенно меньше, чем у животных с опытом психоэмоциональных поражений. Выводы: психоэмоциональное состояние влияет на процессы метастазирования карциномы легкого Льюис и гепатокарциномы-29 у самцов мышей линий C57BL/6J и CBA/Lac

Limiting effect of diazepam on lewis lung carcinoma metastasis in anxious male mice

Aim: It has been shown previously that chronic social defeat stress produces development ofstrong anxiety and increases intensity of experimental metastasis in the losers in comparison with the winners and control mice. The question was: isit possible to decrease the number ofmetastases inthe losers by chronic or acute diazepam treatment. Materials and Methods: Sensory contact model was used for generating male mice with repeated experience of social victories or defeats in daily agonistic interactions. Tumor cells of Lewis Lung Carcinoma (LLC) were injected into the tail vein of animals after 10 days of agonistic interactions. Then mice were treated acutely or chronically (7 days) with diazepam (1 mg/kg, i. p). Number ofmetastases in the lung was calculated in 16 days after tumor cell transplantation. Results: Diazepam decreased the number of LLC metastases in anxious losers, whereas in the winners and control mice, without anxiety state, diazepam was ineffective. Conclusion: Well-known anxiolytic diazepam may decrease intensity of metastasis in anxious mice

The WEBT BL Lacertae Campaign 2001 and its extension : Optical light curves and colour analysis 1994–2002

BL Lacertae has been the target of four observing campaigns by the Whole Earth Blazar Telescope (WEBT) collaboration. In this paper we present UBVRI light curves obtained by theWEBT from 1994 to 2002, including the last, extended BL Lac 2001 campaign. A total of about 7500 optical observations performed by 31 telescopes from Japan to Mexico have been collected, to be added to the ∼15 600 observations of the BL Lac Campaign 2000. All these data allow one to follow the source optical emission behaviour with unprecedented detail. The analysis of the colour indices reveals that the flux variability can be interpreted in terms of two components: longer-term variations occurring on a fewday time scale appear as mildly-chromatic events, while a strong bluer-when-brighter chromatism characterizes very fast (intraday) flares. By decoupling the two components, we quantify the degree of chromatism inferring that longer-term flux changes imply moving along a ∼0.1 bluerwhen- brighter slope in the B − R versus R plane; a steeper slope of ∼0.4 would distinguish the shorter-term variations. This means that, when considering the long-term trend, the B-band flux level is related to the R-band one according to a power law of index ∼1.1. Doppler factor variations on a “convex” spectrum could be the mechanism accounting for both the long-term variations and their slight chromatism.Reig Torres, Pablo, [email protected]

On the convergence of mappings with k-finite distortion

[No abstract available

On the convergence of mappings with k-finite distortion

[No abstract available

Development of Electronic Public Services in Agriculture

The authors prove the relevance of the implementation of digital transformation in agricultural production and describe the main factors which constrain this process. Various approaches to the definition of the term “service” and “public service” are presented, a statistical analysis of the system for the provision of public services in electronic form is carried out and the mechanism for the implementation of public services of the Ministry of Agriculture of the Russian Federation is described. The purpose of the study is to determine the main directions of development of electronic public services in the agricultural sector based on SWOT analysis. The scientific novelty is in the proactive approach to the implementation of public services in electronic form. As a result, the authors propose to introduce the concept of super service in the process of digitalization of public services of sectoral departments, as well as other measures to improve the efficiency of electronic interaction between authorities and agricultural organizations

Immunohistochemical study of Ki-67, p53 and Notch1 expressions in prostate cancer of different grades [Immunogistokhimicheskoe issledovanie ekspressii Ki-67, p53 i Notch1 v adenokartsinomakh predstatel'noi zhelezy razlichnoi stepeni zlokachestvennosti]

OBJECTIVE: To determine the prognostic value of the expression of Ki-67, p53, and Notch1 in the diagnosis of prostate cancer. MATERIAL AND METHODS: Surgical and diagnostic materials obtained from patients with benign prostatic hyperplasia, prostate intraepithelial neoplasia, and prostate cancer of different grades underwent studies; a total of 98 patients were examined. Cell antigens were determined using rabbit anti-Ki-67 monoclonal antibodies (Clone SP6), mouse anti-p53 monoclonal antibodies (Clone Y5), and recombinant anti-Notch1 antibodies (Clone EP1238Y). RESULTS: Comparing Ki-67, p53, and Notch1 expression indices revealed statistically significant differences. There was a significant direct correlation between Ki-67 and p53 expression indices and prostate cancer grade groups based on the morphological Gleason grading system (rs=0.736; p<0.001; rs=0.682; p=0.035, respectively) and a strong inverse correlation between Notch1 expression and prostate cancer grade groups (rs= -0.425, p<0.001). CONCLUSION: Notch1 expression in conjunction with the low proliferative activity of cells and the absence of p53 (Y5) protein may suggest that the mechanism of apoptosis is preserved in tumor cells, which expands indications for medical treatment of prostate cancer.ЦЕЛЬ ИССЛЕДОВАНИЯ: Определить прогностическую значимость экспрессии Ki-67, p53 и Notch1 в диагностике рака предстательной железы. МАТЕРИАЛ И МЕТОДЫ: Исследован операционный и диагностический материал, полученный от пациентов с доброкачественной гиперплазией, простатической интраэпителиальной неоплазией и раком предстательной железы различной степени злокачественности, всего 98 пациентов. Определение клеточных антигенов осуществлялось при помощи моноклональных кроличьих антител к белку Ki-67 (Clone SP6), мышиных антител к белку p53 (Clone Y5), рекомбинантных антител к белку Notch1 (Clone EP1238Y). РЕЗУЛЬТАТЫ: Выявлены статистически значимые различия при сравнении показателей экспрессии Ki-67, p53 и Notch1. Установлена достоверная прямая корреляционная связь между показателями экспрессии Ki-67, p53 и прогностическими группами рака предстательной железы, основанными на морфологической классификации по Глисону (rs=0,736, p<0,001; rs=0,682, p=0,035 соответственно), а также выявлена сильная обратная связь между экспрессией Notch1 и прогностическими группами рака предстательной железы (rs=–0,425, p<0,001). Заключение. Экспрессия Notch1 в сочетании с низкой пролиферативной активностью клеток и отсутствием белка p53 (Y5) может свидетельствовать о сохранности механизма апоптоза в опухолевых клетках, что расширяет показания к консервативному лечению рака предстательной железы

Immunohistochemical expression of nanog protein in prostate cancer cells of distinct grade groups [ИММУНОГИСТОХИМИЧЕСКАЯ ЭКСПРЕССИЯ БЕЛКА NANOG В КЛЕТКАХ РАКА ПРЕДСТАТЕЛЬНОЙ ЖЕЛЕЗЫ РАЗЛИЧНЫХ ПРОГНОСТИЧЕСКИХ ГРУПП]

Prostate cancer is the most common type of cancer among men, which is mainly due to extensive use of screening tests and high total number of prostate biopsies. Verification of tumors with poorer prognosis is the primary goal of prostate cancer management. The study was aimed to determine the clinical and morphological associations and the prognostic value of the Nanog protein expression in prostate cancer of distinct Grade Groups. We used the prostate tissue specimens obtained during surgery, and the biopsy specimens, the total of 89 cases. Histological and immunohistochemical assessment was performed using antibodies to Ki-67 and Nanog. Correlations between the expression of markers and the Grade Groups were revealed using the Spearman's rank correlation coefficient, and the correlation with clinical and morphological characteristics was determined using the chi-squared test (χ2). There was a positive correlation between the expression of Ki-67 and Nanog, and the Grade Group numerical order (rs = 0.619, p &lt; 0.001 and rs = 0.786, p &lt; 0.001 respectively). We managed to find the relationship between the high Nanog expression and the extraprostatic extension (p = 0.041). High expression of Nanog protein in the prostate cancer cells was associated with a higher-grade adenocarcinoma and indicated a poor prognosis. © 2020 Pirogov Russian National Research Medical University. All rights reserved