45 research outputs found

    Effect of the anisotropy of monocrystalline silicon mechanical properties on the dynamic characteristics of a micromechanical gyroscope

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    The aim of the research was to determine the effect of temperature on mechanical properties of a micromechanical gyroscope with the sensing element mounted on a silicon wafer, with the crystallographic orientation of (100) (110) (111). The research is of current relevancy since the metrological characteristics that depend on the eigenfrequencies over the full temperature range are to be controlled. The temperature-modal analysis of the micromechanical gyroscope model was performed with ANSYS program. The temperature dependence for eigenfrequencies was obtained. The dependence of the scale factor on temperature for the most temperature-independent variant of sensor positioning on the wafer was determined. The developed mathematical model was used to find the forms of the output oscillations of the gyroscope

    Hemozoin "knobs" in Opisthorchis felineus infected liver

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    Background Hemozoin is the pigment produced by some blood-feeding parasites. It demonstrates high diagnostic and therapeutic potential. In this work the formation of co-called hemozoin β€œknobs” – the bile duct ectasia filled up by hemozoin pigment - in Opisthorhis felineus infected hamster liver has been observed. Methods The O. felineus infected liver was examined by histological analysis and magnetic resonance imaging (MRI). The pigment hemozoin was identified by Fourier transform infrared spectroscopy and high resolution electrospray ionization mass spectrometry analysis. Hemozoin crystals were characterised by high resolution transmission electron microscopy. Results Hemozoin crystals produced by O. felineus have average length 403 nm and the length-to-width ratio equals 2.0. The regurgitation of hemozoin from parasitic fluke during infection leads to formation of bile duct ectasia. The active release of hemozoin from O. felineus during in vitro incubation has also been evidenced. It has been shown that the hemozoin knobs can be detected by magnetic resonance imaging. Conclusions In the paper for the first time the characterisation of hemozoin pigment extracted from liver fluke O. felineus has been conducted. The role of hemozoin in the modification of immune response by opisthorchiasis is assumed

    Clinicopathological features of nonspecific invasive breast cancer according to its molecular subtypes

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    The aim of the present study was to investigate the clinical and morphological features of nonspecific invasive breast cancer according to its molecular subtypes. Materials and Methods: 163 women with nonspecific invasive breast cancer (T1–4N0–3M0) were included in the present study. Luminal A type of breast cancer was detected in 101 women, luminal B type β€” in 23 women, overexpression of HER2/neu was identified in 14 women and triple-negative cancer β€” in 25 women. Results: The study revealed that various molecular subtypes of breast cancer differ in the morphological structure, the expression characteristics of the primary tumor and the rate of lymphogenous and hematogenous metastasis. Lymphogenous metastases were more frequently (in 71%) detected in HER2/neu overexpressing breast cancer than in luminal A (41%), luminal B (39%) and triple-negative tumors (40%). Hematogenous metastasis did not depend on the morphological structure of carcinoma infiltrative component, the state of tumor stroma as well as the proliferative activity in all the investigated groups. Conclusion: The revealed clinicopathological characteristics of different molecular subtypes of invasive breast cancer allow to predict the possible outcome of the disease and select personalized treatment strategy for patients more reasonably

    ROLE OF TRANSFORMING GROWTH FACTOR RECEPTOR B I TYPE (TGF-BRI) IN THE PROGRESSION OF THE LUMINAL BREAST CANCER SUBTYPE

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    Introduction. The crosstalk between the estrogen and growth factor receptors signaling may play an important role in the resistance to endocrine therapy. The aim of the study was to examine the relationship between the protein and receptor gene expression of transforming growth factor Ξ² type I (TGF-Ξ²RI) and its polymorphism with progression of luminal breast cancer patients treated by adjuvant tamoxifen. Material and methods.Β  The study included 105 patients with luminal breast cancer (T1-3N0–3M0), who had received adjuvant tamoxifenΒ  at a dose of 20 mg/day for at least 5 years. Patients who developed distant metastasis or recurrence after tamoxifen therapy were defined as tamoxifen resistance (TR) group, while distant metastasis-free patients were analyzed as tamoxifen sensitive (TS) group. TGF-Ξ²RI expression level was evaluated using immunohistochemistry. TGF-BRI gene expression and genotypes for rs334354 SNP were detected by a Real-time PCR. Results. We found high TGF-Ξ²RI gene expression in patients with luminal A subtype compared with luminal B breast cancer (p=0.050). The Int7G24AA and Int7G24A mutant carriers were more prevalent in luminal A breast cancer patients (p=0.019 and p=0.007, respectively). TGF-Ξ²RI protein expression level was significantly higher in the tamoxifen sensitive group compared to tamoxifen resistance breast cancer patients regardless of molecular subtypes (p=0.043). There was a trend for a tamoxifen sensitivity among luminal B breast cancer patients with a high TGF-Ξ²RI protein expression (p=0.090). Conclusion. TGF-Ξ²RI protein expression level can be a potential molecular marker of tamoxifen resistance in luminal breast cancer patients

    ΠŸΠ ΠžΠ“ΠΠžΠ‘Π’Π˜Π§Π•Π‘ΠšΠΠ― Π ΠžΠ›Π¬ ΠœΠžΠ›Π•ΠšΠ£Π›Π―Π ΠΠ«Π₯ ΠŸΠžΠ”Π’Π˜ΠŸΠžΠ’ РАКА Π’ΠžΠ›Π‘Π’ΠžΠ™ КИШКИ. Π‘ΠžΠ’Π Π•ΠœΠ•ΠΠΠ«Π™ Π’Π—Π“Π›Π―Π” НА ΠŸΠ ΠžΠ‘Π›Π•ΠœΠ£

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    Purpose of the study: to review the available data on the heterogeneity of colon cancer and to assess the prognostic significance of colon cancer subtypes.Material and Methods. Medline, PubMed, Cochrane library, elibrary databases were used to identify studies that characterized the current view on the problem of choosing the optimal postoperative treatment for colon cancer.Results. the review showed the results of international studies of colon cancer subtypes based on complex multomics characteristics. Particular attention was paid to the description of modern studies on the search for prognostic markers for colon cancer. The relevance of the study of immunohistochemical markers was confirmed by the analysis of the world literature. the outcomes will make it possible to classify colon cancer into molecular subtypes in real clinical practice and, as a consequence, significantly improve the effectiveness of adjuvant therapy.ЦСль исслСдования – ΠΎΠ±ΠΎΠ±Ρ‰Π΅Π½ΠΈΠ΅ ΠΈΠΌΠ΅ΡŽΡ‰ΠΈΡ…ΡΡ свСдСний ΠΎ гСтСрогСнности Ρ€Π°ΠΊΠ° толстой кишки ΠΈ ΠΎΡ†Π΅Π½ΠΊΠ° прогностичСской значимости Π΅Π³ΠΎ ΠΏΠΎΠ΄Ρ‚ΠΈΠΏΠΎΠ².ΠœΠ°Ρ‚Π΅Ρ€ΠΈΠ°Π» ΠΈ ΠΌΠ΅Ρ‚ΠΎΠ΄Ρ‹. Поиск Π»ΠΈΡ‚Π΅Ρ€Π°Ρ‚ΡƒΡ€Ρ‹ производился Π² систСмах Medline, Cochrane library, elibrary ΠΈ PubMed, Π²ΠΊΠ»ΡŽΡ‡Π°Π»ΠΈΡΡŒ ΠΏΡƒΠ±Π»ΠΈΠΊΠ°Ρ†ΠΈΠΈ, Ρ…Π°Ρ€Π°ΠΊΡ‚Π΅Ρ€ΠΈΠ·ΡƒΡŽΡ‰ΠΈΠ΅ соврСмСнный взгляд Π½Π° ΠΏΡ€ΠΎΠ±Π»Π΅ΠΌΡƒ Π²Ρ‹Π±ΠΎΡ€Π° стратСгии послСопСрационного лСчСния Ρ€Π°ΠΊΠ° толстой кишки.Π Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹. Π’ ΠΎΠ±Π·ΠΎΡ€Π΅ освСщСны Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹ ΠΌΠ΅ΠΆΠ΄ΡƒΠ½Π°Ρ€ΠΎΠ΄Π½Ρ‹Ρ… исслСдований ΠΏΠΎΠ΄Ρ‚ΠΈΠΏΠΎΠ² Ρ€Π°ΠΊΠ° толстой кишки, основанныС Π½Π° комплСксных ΠΌΡƒΠ»ΡŒΡ‚ΠΈΠΎΠΌΠ½Ρ‹Ρ… характСристиках. ОсобоС Π²Π½ΠΈΠΌΠ°Π½ΠΈΠ΅ ΡƒΠ΄Π΅Π»Π΅Π½ΠΎ описанию соврСмСнных исслСдований ΠΏΠΎ поиску прогностичСских ΠΌΠ°Ρ€ΠΊΠ΅Ρ€ΠΎΠ² Ρ€Π°ΠΊΠ° толстой кишки. ΠŸΡ€ΠΎΠ²Π΅Π΄Π΅Π½ Π°Π½Π°Π»ΠΈΠ· ΠΌΠΈΡ€ΠΎΠ²ΠΎΠΉ Π»ΠΈΡ‚Π΅Ρ€Π°Ρ‚ΡƒΡ€Ρ‹, ΠΏΠΎΠ΄Ρ‚Π²Π΅Ρ€ΠΆΠ΄Π°ΡŽΡ‰ΠΈΠΉ Π°ΠΊΡ‚ΡƒΠ°Π»ΡŒΠ½ΠΎΡΡ‚ΡŒ исслСдования иммуногистохимичСских ΠΌΠ°Ρ€ΠΊΠ΅Ρ€ΠΎΠ², ΠΊΠΎΡ‚ΠΎΡ€Ρ‹Π΅ Π΄Π°Π΄ΡƒΡ‚ Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡ‚ΡŒ ΠΊΠ»Π°ΡΡΠΈΡ„ΠΈΡ†ΠΈΡ€ΠΎΠ²Π°Ρ‚ΡŒ Ρ€Π°ΠΊ толстой кишки Π½Π° молСкулярныС ΠΏΠΎΠ΄Ρ‚ΠΈΠΏΡ‹ Π² Ρ€Π΅Π°Π»ΡŒΠ½ΠΎΠΉ клиничСской ΠΏΡ€Π°ΠΊΡ‚ΠΈΠΊΠ΅ ΠΈ, ΡΠ»Π΅Π΄ΠΎΠ²Π°Ρ‚Π΅Π»ΡŒΠ½ΠΎ, Π·Π½Π°Ρ‡ΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎ ΡƒΠ»ΡƒΡ‡ΡˆΠΈΡ‚ΡŒ ΡΡ„Ρ„Π΅ΠΊΡ‚ΠΈΠ²Π½ΠΎΡΡ‚ΡŒ Π°Π΄ΡŠΡŽΠ²Π°Π½Ρ‚Π½ΠΎΠΉ Ρ‚Π΅Ρ€Π°ΠΏΠΈΠΈ

    Π“Π•Π’Π•Π ΠžΠ“Π•ΠΠΠžΠ‘Π’Π¬ Π­ΠšΠ‘ΠŸΠ Π•Π‘Π‘Π˜Π˜ ΠœΠΠ ΠšΠ•Π ΠžΠ’, ΠΠ‘Π‘ΠžΠ¦Π˜Π˜Π ΠžΠ’ΠΠΠΠ«Π₯ Π‘ Π˜ΠΠ’ΠΠ—Π˜Π’ΠΠ«Πœ ΠšΠ›Π•Π’ΠžΠ§ΠΠ«Πœ РОБВОМ, ПРИ Π ΠΠšΠ• ΠœΠžΠ›ΠžΠ§ΠΠžΠ™ Π–Π•Π›Π•Π—Π«

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    The paper is devoted to the study of the expression of markers associated with invasive breast carcinoma. The study included a surgical material from 107 patients with invasive carcinoma of the non-specific type of breast cancer who had not previously received neoadjuvant therapy. The study revealed a number of markers related to invasive tumor growth, characterized by a pronounced heterogeneous expression pattern in all cases. Study of the expression of markers associated with invasive breast carcinoma showed that not all cells are able to promote invasive growth in different periods of time, but the fact of detecting the positive expression of the markers in tissue tumors indicates a more aggressive cancer phenotype with a high potential for invasion.Β Π‘Ρ‚Π°Ρ‚ΡŒΡ посвящСна ΠΈΠ·ΡƒΡ‡Π΅Π½ΠΈΡŽ особСнностСй экспрСссии ΠΌΠ°Ρ€ΠΊΠ΅Ρ€ΠΎΠ², ассоциированных с ΠΈΠ½Π²Π°Π·ΠΈΠ²Π½Ρ‹ΠΌ ΠΊΠ»Π΅Ρ‚ΠΎΡ‡Π½Ρ‹ΠΌ ростом, ΠΏΡ€ΠΈ Ρ€Π°ΠΊΠ΅ ΠΌΠΎΠ»ΠΎΡ‡Π½ΠΎΠΉ ΠΆΠ΅Π»Π΅Π·Ρ‹. Π’ исслСдованиС Π±Ρ‹Π» Π²ΠΊΠ»ΡŽΡ‡Π΅Π½ ΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΠΎΠ½Π½Ρ‹ΠΉ ΠΌΠ°Ρ‚Π΅Ρ€ΠΈΠ°Π» ΠΎΡ‚ 107 ΠΏΠ°Ρ†ΠΈΠ΅Π½Ρ‚ΠΎΠΊ с ΠΈΠ½Π²Π°Π·ΠΈΠ²Π½ΠΎΠΉ ΠΊΠ°Ρ€Ρ†ΠΈΠ½ΠΎΠΌΠΎΠΉ нСспСцифичСского Ρ‚ΠΈΠΏΠ° ΠΌΠΎΠ»ΠΎΡ‡Π½ΠΎΠΉ ΠΆΠ΅Π»Π΅Π·Ρ‹, Π½Π΅ ΠΏΠΎΠ»ΡƒΡ‡Π°Π²ΡˆΠΈΡ… Π½Π΅ΠΎΠ°Π΄ΡŠΡŽΠ²Π°Π½Ρ‚Π½ΠΎΠΉ Ρ‚Π΅Ρ€Π°ΠΏΠΈΠΈ. Π’ Ρ…ΠΎΠ΄Π΅ исслСдования Π±Ρ‹Π»ΠΎ выявлСно, Ρ‡Ρ‚ΠΎ ряд ΠΌΠ°Ρ€ΠΊΠ΅Ρ€ΠΎΠ², ΠΈΠΌΠ΅ΡŽΡ‰ΠΈΡ… ΠΎΡ‚Π½ΠΎΡˆΠ΅Π½ΠΈΠ΅ ΠΊ ΠΈΠ½Π²Π°Π·ΠΈΠ²Π½ΠΎΠΌΡƒ ΠΎΠΏΡƒΡ…ΠΎΠ»Π΅Π²ΠΎΠΌΡƒ росту, характСризуСтся Π½Π°Π»ΠΈΡ‡ΠΈΠ΅ΠΌ Π²Ρ‹Ρ€Π°ΠΆΠ΅Π½Π½ΠΎΠ³ΠΎ Π³Π΅Ρ‚Π΅Ρ€ΠΎΠ³Π΅Π½Π½ΠΎΠ³ΠΎ Ρ…Π°Ρ€Π°ΠΊΡ‚Π΅Ρ€Π° экспрСссии Π²ΠΎ всСх исслСдованных случаях. Π˜Π·ΡƒΡ‡Π΅Π½ΠΈΠ΅ экспрСссионных особСнностСй ΠΌΠ°Ρ€ΠΊΠ΅Ρ€ΠΎΠ², связанных с ΠΈΠ½Π²Π°Π·ΠΈΠ΅ΠΉ ΠΏΡ€ΠΈ ΠΊΠ°Ρ€Ρ†ΠΈΠ½ΠΎΠΌΠ΅ ΠΌΠΎΠ»ΠΎΡ‡Π½ΠΎΠΉ ΠΆΠ΅Π»Π΅Π·Ρ‹, ΠΏΠΎΠΊΠ°Π·Π°Π»ΠΎ, Ρ‡Ρ‚ΠΎ ΡΠΏΠΎΡΠΎΠ±Π½ΠΎΡΡ‚ΡŒΡŽ ΠΊ ΠΈΠ½Π²Π°Π·ΠΈΠ²Π½ΠΎΠΌΡƒ росту Π² Ρ€Π°Π·Π½Ρ‹Π΅ Π²Ρ€Π΅ΠΌΠ΅Π½Π½Ρ‹Π΅ ΠΏΠ΅Ρ€ΠΈΠΎΠ΄Ρ‹ ΠΎΠ±Π»Π°Π΄Π°ΡŽΡ‚ Π½Π΅ всС ΠΊΠ»Π΅Ρ‚ΠΊΠΈ, ΠΎΠ΄Π½Π°ΠΊΠΎ сам Ρ„Π°ΠΊΡ‚ выявлСния ΠΏΠΎΠ·ΠΈΡ‚ΠΈΠ²Π½ΠΎΠΉ экспрСссии ΠΈΠ·ΡƒΡ‡Π°Π΅ΠΌΡ‹Ρ… ΠΌΠ°Ρ€ΠΊΠ΅Ρ€ΠΎΠ² Π² Ρ‚ΠΊΠ°Π½ΠΈ новообразования ΡƒΠΊΠ°Π·Ρ‹Π²Π°Π΅Ρ‚ Π½Π° Π½Π°Π»ΠΈΡ‡ΠΈΠ΅ Π±ΠΎΠ»Π΅Π΅ агрСссивных свойств ΠΈ высокий ΠΏΠΎΡ‚Π΅Π½Ρ†ΠΈΠ°Π» ΠΎΠΏΡƒΡ…ΠΎΠ»ΠΈ ΠΊ ΠΎΡΡƒΡ‰Π΅ΡΡ‚Π²Π»Π΅Π½ΠΈΡŽ ΠΈΠ½Π²Π°Π·ΠΈΠΈ.

    Бвязь экспрСссии ΠΌΠ°Ρ€ΠΊΠ΅Ρ€ΠΎΠ² ΡΠΏΠΈΡ‚Π΅Π»ΠΈΠ°Π»ΡŒΠ½ΠΎ-ΠΌΠ΅Π·Π΅Π½Ρ…ΠΈΠΌΠ°Π»ΡŒΠ½ΠΎΠ³ΠΎ ΠΏΠ΅Ρ€Π΅Ρ…ΠΎΠ΄Π° с ΠΊΠ»ΠΈΠ½ΠΈΠΊΠΎ-морфологичСскими ΠΏΠ°Ρ€Π°ΠΌΠ΅Ρ‚Ρ€Π°ΠΌΠΈ Ρ€Π°ΠΊΠ° толстой кишки

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    The treatment of colon cancer with a mesenchymal-like phenotype poses a great challenge. Purpose of the study: to research expression of FRMD6, ZEB1, HTR2B, CDX2 in the primary tumor tissue with relation of the clinical and pathological features of colon cancer. Material and methods. a combined analysis of the expression of FRMD6, ZEB1, HTR2B, CDX2 with pathological criteria was performed in 100 patients with T1–4bN0–2bM0Β  colonΒ  cancer.Β  ResultsΒ  ofΒ  theΒ  studyΒ  showΒ  thatΒ  tumorsΒ  withΒ  mesenchymalΒ  signsΒ  are characterized by a large size of the primary tumor, a high grade of differentiation, regional metastases, and eventually advanced stage of the disease. The frequency and expression levels of FRMD6, ZEB1 and HTR2B are depended of grade of adenocarcinoma. in cases with positive expression and a high percentage of expression of these proteins in the cancer cells, the degree of tumor morphological anaplasia increases. Conclusion. The study made it possible to reveal the relationship of IHC markers (FRMD6, ZEB1, HTR2B, CDX2) with tumor characteristics that determine the outcome. The studied markers may have prognostic and predictive value in treatment approaches of colon cancer.ΠΠΊΡ‚ΡƒΠ°Π»ΡŒΠ½ΠΎΠΉ ΠΏΡ€ΠΎΠ±Π»Π΅ΠΌΠΎΠΉ соврСмСнной ΠΎΠ½ΠΊΠΎΠ»ΠΎΠ³ΠΈΠΈ ΡΠ²Π»ΡΡŽΡ‚ΡΡ ΠΎΠΏΡƒΡ…ΠΎΠ»ΠΈ толстой кишки с ΠΌΠ΅Π·Π΅Π½Ρ…ΠΈΠΌΠ°Π»ΡŒΠ½ΠΎ-ΠΏΠΎΠ΄ΠΎΠ±Π½Ρ‹ΠΌ ΠΏΠΎΠ΄Ρ‚ΠΈΠΏΠΎΠΌ, ΠΊΠΎΡ‚ΠΎΡ€Ρ‹ΠΉ опрСдСляСт нСблагоприятноС клиничСскоС Ρ‚Π΅Ρ‡Π΅Π½ΠΈΠ΅ заболСвания. ЦСль исслСдования β€’ ΠΈΠ·ΡƒΡ‡ΠΈΡ‚ΡŒ ΠΊΠ»ΠΈΠ½ΠΈΠΊΠΎ-морфологичСскиС характСристики Ρ€Π°ΠΊΠ° толстой кишки Π² зависимости ΠΎΡ‚ экспрСссии ΠΌΠ°Ρ€ΠΊΠ΅Ρ€ΠΎΠ² FRMD6, ZEB1, HTR2B, CDX2 Π² Ρ‚ΠΊΠ°Π½ΠΈ ΠΏΠ΅Ρ€Π²ΠΈΡ‡Π½ΠΎΠΉ ΠΎΠΏΡƒΡ…ΠΎΠ»ΠΈ. ΠœΠ°Ρ‚Π΅Ρ€ΠΈΠ°Π» ΠΈ ΠΌΠ΅Ρ‚ΠΎΠ΄Ρ‹. ΠŸΡ€ΠΎΠ²Π΅Π΄Π΅Π½ совокупный Π°Π½Π°Π»ΠΈΠ· экспрСссии FRMD6, ZEB1, HTR2B, CDX2 с патоморфологичСскими критСриями Ρƒ 100 Π±ΠΎΠ»ΡŒΠ½Ρ‹Ρ… Ρ€Π°ΠΊΠΎΠΌ толстой кишки T1–4bN0–2bM0. Π Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹. ΠžΠΏΡƒΡ…ΠΎΠ»ΠΈ с Π²Ρ‹Ρ€Π°ΠΆΠ΅Π½Π½Ρ‹ΠΌΠΈ ΠΌΠ΅Π·Π΅Π½Ρ…ΠΈΠΌΠ½Ρ‹ΠΌΠΈ ΠΏΡ€ΠΈΠ·Π½Π°ΠΊΠ°ΠΌΠΈ Ρ…Π°Ρ€Π°ΠΊΡ‚Π΅Ρ€ΠΈΠ·ΡƒΡŽΡ‚ΡΡ большим Ρ€Π°Π·ΠΌΠ΅Ρ€ΠΎΠΌ ΠΏΠ΅Ρ€Π²ΠΈΡ‡Π½ΠΎΠΉ ΠΎΠΏΡƒΡ…ΠΎΠ»ΠΈ, Π½ΠΈΠ·ΠΊΠΎΠΉ ΡΡ‚Π΅ΠΏΠ΅Π½ΡŒΡŽ Π΄ΠΈΡ„Ρ„Π΅Ρ€Π΅Π½Ρ†ΠΈΡ€ΠΎΠ²ΠΊΠΈ, ΠΏΠΎΡ€Π°ΠΆΠ΅Π½ΠΈΠ΅ΠΌ Ρ€Π΅Π³ΠΈΠΎΠ½Π°Ρ€Π½Ρ‹Ρ… лимфатичСских ΡƒΠ·Π»ΠΎΠ² ΠΈ, ΠΊΠ°ΠΊ слСдствиС, большСй стадиСй заболСвания. ΠžΠ±Π½Π°Ρ€ΡƒΠΆΠ΅Π½Π° Π·Π°Π²ΠΈΡΠΈΠΌΠΎΡΡ‚ΡŒ частоты ΠΈ уровня экспрСссии FRMD6, ZEB1 И HTR2B Π² ΠΎΡ‚Π½ΠΎΡˆΠ΅Π½ΠΈΠΈ стСпСни Π΄ΠΈΡ„Ρ„Π΅Ρ€Π΅Π½Ρ†ΠΈΡ€ΠΎΠ²ΠΊΠΈ Π°Π΄Π΅Π½ΠΎΠΊΠ°Ρ€Ρ†ΠΈΠ½ΠΎΠΌΡ‹ кишки, ΠΏΠΎΠΊΠ°Π·Π°Π½ΠΎ, Ρ‡Ρ‚ΠΎ ΠΏΡ€ΠΈ Π½Π°Π»ΠΈΡ‡ΠΈΠΈ ΠΏΠΎΠ·ΠΈΡ‚ΠΈΠ²Π½ΠΎΠΉ экспрСссии ΠΈ высоких значСниях ΠΏΡ€ΠΎΡ†Π΅Π½Ρ‚Π° экспрСссии Π΄Π°Π½Π½Ρ‹Ρ… Π±Π΅Π»ΠΊΠΎΠ² Π² Ρ‚ΠΊΠ°Π½ΠΈ новообразования ΠΏΠΎΠ²Ρ‹ΡˆΠ°Π΅Ρ‚ΡΡ ΡΡ‚Π΅ΠΏΠ΅Π½ΡŒ морфологичСской Π°Π½Π°ΠΏΠ»Π°Π·ΠΈΠΈ ΠΎΠΏΡƒΡ…ΠΎΠ»ΠΈ. Π—Π°ΠΊΠ»ΡŽΡ‡Π΅Π½ΠΈΠ΅. ИсслСдованиС ΠΏΠΎΠ·Π²ΠΎΠ»ΠΈΠ»ΠΎ ΠΎΠ±Π½Π°Ρ€ΡƒΠΆΠΈΡ‚ΡŒ связь иммуногистохимичСских ΠΌΠ°Ρ€ΠΊΠ΅Ρ€ΠΎΠ² FRMD6, ZEB1, HTR2B, CDX2 с характСристиками ΠΎΠΏΡƒΡ…ΠΎΠ»ΠΈ, ΠΎΠΏΡ€Π΅Π΄Π΅Π»ΡΡŽΡ‰ΠΈΠΌΠΈ Ρ‚Π΅Ρ‡Π΅Π½ΠΈΠ΅ онкологичСского процСсса. Π˜Π·ΡƒΡ‡Π΅Π½Π½Ρ‹Π΅ ΠΌΠ°Ρ€ΠΊΠ΅Ρ€Ρ‹ Π² дальнСйшСм ΠΌΠΎΠ³ΡƒΡ‚ ΠΈΠΌΠ΅Ρ‚ΡŒ прогностичСскоС ΠΈ ΠΏΡ€Π΅Π΄ΠΈΠΊΡ‚ΠΈΠ²Π½ΠΎΠ΅ Π·Π½Π°Ρ‡Π΅Π½ΠΈΠ΅ ΠΏΡ€ΠΈ Ρ€Π°ΠΊΠ΅ толстой кишки

    ΠŸΡ€ΠΎΡΠ²Π»Π΅Π½ΠΈΡ Π°ΠΏΠΎΠΏΡ‚ΠΎΠ·Π° Π² субпопуляциях Ρ†ΠΈΡ€ΠΊΡƒΠ»ΠΈΡ€ΡƒΡŽΡ‰ΠΈΡ… ΠΎΠΏΡƒΡ…ΠΎΠ»Π΅Π²Ρ‹Ρ… ΠΊΠ»Π΅Ρ‚ΠΎΠΊ с Ρ„Π΅Π½ΠΎΡ‚ΠΈΠΏΠ°ΠΌΠΈ, ассоциированными со ΡΡ‚Π²ΠΎΠ»ΠΎΠ²ΠΎΡΡ‚ΡŒΡŽ ΠΈ ΡΠΏΠΈΡ‚Π΅Π»ΠΈΠ°Π»ΡŒΠ½ΠΎ-ΠΌΠ΅Π·Π΅Π½Ρ…ΠΈΠΌΠ°Π»ΡŒΠ½Ρ‹ΠΌ ΠΏΠ΅Ρ€Π΅Ρ…ΠΎΠ΄ΠΎΠΌ, ΠΏΡ€ΠΈ ΠΊΠ°Ρ€Ρ†ΠΈΠ½ΠΎΠΌΠ΅ ΠΌΠΎΠ»ΠΎΡ‡Π½ΠΎΠΉ ΠΆΠ΅Π»Π΅Π·Ρ‹

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    Introduction. Ability of circulating tumor cells (CTC) initiate metastases in distant sites is associated primarily with their resistance to apoptosis which allows them to retain viability in the blood. Knowledge of phenotypical signs associated with this ability would allow to predict the risk of metastases and optimize adjuvant therapy.Aim. To examine signs of apoptosis in CTC populations with various phenotypical characteristics.Materials and methods. The study included 58 patients with invasive breast carcinoma of unspecified type, stages T1–4N0–3M0. Cell concentrates extracted from patients’ whole blood were stained with an antibody cocktail against CK7 / 8, CD45, EpCAM, CD44, CD24, CD133, ALDH, N-cadherin which allowed to identify CTC with signs of stemness and epithelial-mesenchymal transition. Annexin V and 7‑amino-actinomycin D staining was used for evaluation of apoptosis stage in CTC populations.Results. Circulating tumor cells are characterized by heterogeneity in respect to signs of stemness and epithelial-mesenchymal transition and presence of early and late signs of apoptosis and necrosis. CTC phenotypes including co-expression of epithelial marker CK7 / 8 and stemness marker CD133 (but not CD44) are characterized by absence of signs of apoptosis. Co-expression of CK7 / 8 and CD133 in CTC with stemness markers CD44+ / C D24– is associated with development of early but not late signs of apoptosis and necrosis. Circulating tumor cells without co-expression of CK7 / 8 and CD133 could have both early and late signs of apoptosis and necrosis. Circulating tumor cells phenotypes with signs of early apoptosis expressing CD133 remain in blood after non-adjuvant chemotherapy opposed to CTC without CD133 expression.Conclusion. There are CTC phenotypical signs associated with stemness and epithelial-mesenchymal transition and linked to apoptosis resistance or sensitivity.Π’Π²Π΅Π΄Π΅Π½ΠΈΠ΅. Π‘ΠΏΠΎΡΠΎΠ±Π½ΠΎΡΡ‚ΡŒ Ρ†ΠΈΡ€ΠΊΡƒΠ»ΠΈΡ€ΡƒΡŽΡ‰ΠΈΡ… ΠΎΠΏΡƒΡ…ΠΎΠ»Π΅Π²Ρ‹Ρ… ΠΊΠ»Π΅Ρ‚ΠΎΠΊ (ЦОК) ΠΈΠ½ΠΈΡ†ΠΈΠΈΡ€ΠΎΠ²Π°Ρ‚ΡŒ мСтастазированиС Π² ΠΎΡ‚Π΄Π°Π»Π΅Π½Π½Ρ‹Ρ… сайтах, ΠΏΡ€Π΅ΠΆΠ΄Π΅ всСго, связана с ΠΈΡ… Ρ€Π΅Π·ΠΈΡΡ‚Π΅Π½Ρ‚Π½ΠΎΡΡ‚ΡŒΡŽ ΠΊ Π°ΠΏΠΎΠΏΡ‚ΠΎΠ·Ρƒ, Ρ‡Ρ‚ΠΎ позволяСт ΡΠΎΡ…Ρ€Π°Π½ΠΈΡ‚ΡŒ ΠΆΠΈΠ·Π½Π΅ΡΠΏΠΎΡΠΎΠ±Π½ΠΎΡΡ‚ΡŒ Π² ΠΊΡ€ΠΎΠ²ΠΎΡ‚ΠΎΠΊΠ΅. Π—Π½Π°Π½ΠΈΠ΅ фСнотипичСских ΠΏΡ€ΠΈΠ·Π½Π°ΠΊΠΎΠ², связанных с этой ΡΠΏΠΎΡΠΎΠ±Π½ΠΎΡΡ‚ΡŒΡŽ, ΠΏΠΎΠ·Π²ΠΎΠ»ΠΈΠ»ΠΎ Π±Ρ‹ ΠΏΡ€ΠΎΠ³Π½ΠΎΠ·ΠΈΡ€ΠΎΠ²Π°Ρ‚ΡŒ риск развития мСтастазов ΠΈ ΠΎΠΏΡ‚ΠΈΠΌΠΈΠ·ΠΈΡ€ΠΎΠ²Π°Ρ‚ΡŒ Π°Π΄ΡŠΡŽΠ²Π°Π½Ρ‚Π½ΡƒΡŽ Ρ‚Π΅Ρ€Π°ΠΏΠΈΡŽ.ЦСль исслСдования – ΠΈΠ·ΡƒΡ‡Π΅Π½ΠΈΠ΅ проявлСний Π°ΠΏΠΎΠΏΡ‚ΠΎΠ·Π° Π² популяциях ЦОК с Ρ€Π°Π·Π»ΠΈΡ‡Π½Ρ‹ΠΌΠΈ фСнотипичСскими характСристиками.ΠœΠ°Ρ‚Π΅Ρ€ΠΈΠ°Π»Ρ‹ ΠΈ ΠΌΠ΅Ρ‚ΠΎΠ΄Ρ‹. Π’ исслСдованиС Π²ΠΊΠ»ΡŽΡ‡Π΅Π½Ρ‹ 58 ΠΏΠ°Ρ†ΠΈΠ΅Π½Ρ‚ΠΎΠΊ с ΠΈΠ½Π²Π°Π·ΠΈΠ²Π½ΠΎΠΉ ΠΊΠ°Ρ€Ρ†ΠΈΠ½ΠΎΠΌΠΎΠΉ ΠΌΠΎΠ»ΠΎΡ‡Π½ΠΎΠΉ ΠΆΠ΅Π»Π΅Π·Ρ‹ нСспСцифичСского Ρ‚ΠΈΠΏΠ° стадии T1–4N0–3M0. ΠšΠ»Π΅Ρ‚ΠΎΡ‡Π½Ρ‹Π΅ ΠΊΠΎΠ½Ρ†Π΅Π½Ρ‚Ρ€Π°Ρ‚Ρ‹, ΠΏΠΎΠ»ΡƒΡ‡Π΅Π½Π½Ρ‹Π΅ ΠΈΠ· Ρ†Π΅Π»ΡŒΠ½ΠΎΠΉ ΠΊΡ€ΠΎΠ²ΠΈ ΠΏΠ°Ρ†ΠΈΠ΅Π½Ρ‚ΠΎΠ², ΠΎΠΊΡ€Π°ΡˆΠ΅Π½Ρ‹ ΠΊΠΎΠΊΡ‚Π΅ΠΉΠ»Π΅ΠΌ Π°Π½Ρ‚ΠΈΡ‚Π΅Π» ΠΊ C K7 / 8, CD45, EpCAM, CD44, CD24, CD133, ALDH, N-ΠΊΠ°Π΄Π³Π΅Ρ€ΠΈΠ½Ρƒ, Ρ‡Ρ‚ΠΎ позволяСт ΠΈΠ΄Π΅Π½Ρ‚ΠΈΡ„ΠΈΡ†ΠΈΡ€ΠΎΠ²Π°Ρ‚ΡŒ ЦОК с ΠΏΡ€ΠΈΠ·Π½Π°ΠΊΠ°ΠΌΠΈ стволовости ΠΈ ΡΠΏΠΈΡ‚Π΅Π»ΠΈΠ°Π»ΡŒΠ½ΠΎ-ΠΌΠ΅Π·Π΅Π½Ρ…ΠΈΠΌΠ°Π»ΡŒΠ½ΠΎΠ³ΠΎ ΠΏΠ΅Ρ€Π΅Ρ…ΠΎΠ΄Π°. ΠžΠΊΡ€Π°ΡˆΠΈΠ²Π°Π½ΠΈΠ΅ аннСксином V ΠΈ 7-Π°ΠΌΠΈΠ½ΠΎΠ°ΠΊΡ‚ΠΈΠ½ΠΎΠΌΠΈΡ†ΠΈΠ½ΠΎΠΌ D использовали для ΠΎΡ†Π΅Π½ΠΊΠΈ Ρ€Π°Π·Π½Ρ‹Ρ… стадий Π°ΠΏΠΎΠΏΡ‚ΠΎΠ·Π° ΠΊΠ°ΠΆΠ΄ΠΎΠΉ ΠΈΠ· популяций ЦОК.Π Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹. Π¦ΠΈΡ€ΠΊΡƒΠ»ΠΈΡ€ΡƒΡŽΡ‰ΠΈΠ΅ ΠΎΠΏΡƒΡ…ΠΎΠ»Π΅Π²Ρ‹Π΅ ΠΊΠ»Π΅Ρ‚ΠΊΠΈ Ρ…Π°Ρ€Π°ΠΊΡ‚Π΅Ρ€ΠΈΠ·ΡƒΡŽΡ‚ΡΡ Π²Ρ‹Ρ€Π°ΠΆΠ΅Π½Π½ΠΎΠΉ Π³Π΅Ρ‚Π΅Ρ€ΠΎΠ³Π΅Π½Π½ΠΎΡΡ‚ΡŒΡŽ ΠΏΠΎ проявлСниям ΠΏΡ€ΠΈΠ·Π½Π°ΠΊΠΎΠ² стволовости ΠΈ ΡΠΏΠΈΡ‚Π΅Π»ΠΈΠ°Π»ΡŒΠ½ΠΎ-ΠΌΠ΅Π·Π΅Π½Ρ…ΠΈΠΌΠ°Π»ΡŒΠ½ΠΎΠ³ΠΎ ΠΏΠ΅Ρ€Π΅Ρ…ΠΎΠ΄Π° ΠΈ ассоциации с Π½Π°Π»ΠΈΡ‡ΠΈΠ΅ΠΌ Ρ€Π°Π½Π½ΠΈΡ… ΠΈ ΠΏΠΎΠ·Π΄Π½ΠΈΡ… ΠΏΡ€ΠΈΠ·Π½Π°ΠΊΠΎΠ² Π°ΠΏΠΎΠΏΡ‚ΠΎΠ·Π° ΠΈ Π½Π΅ΠΊΡ€ΠΎΠ·Π°. Для ЦОК с Ρ„Π΅Π½ΠΎΡ‚ΠΈΠΏΠ°ΠΌΠΈ, Π²ΠΊΠ»ΡŽΡ‡Π°ΡŽΡ‰ΠΈΠΌΠΈ ΠΊΠΎΡΠΊΡΠΏΡ€Π΅ΡΡΠΈΡŽ ΡΠΏΠΈΡ‚Π΅Π»ΠΈΠ°Π»ΡŒΠ½ΠΎΠ³ΠΎ ΠΌΠ°Ρ€ΠΊΠ΅Ρ€Π° CK7 / 8 ΠΈ ΠΌΠ°Ρ€ΠΊΠ΅Ρ€Π° стволовости CD133 (Π½ΠΎ Π½Π΅ C D44), Π±ΠΎΠ»Π΅Π΅ Ρ…Π°Ρ€Π°ΠΊΡ‚Π΅Ρ€Π½ΠΎ отсутствиС ΠΏΡ€ΠΈΠ·Π½Π°ΠΊΠΎΠ² Π°ΠΏΠΎΠΏΡ‚ΠΎΠ·Π°. ΠšΠΎΡΠΊΡΠΏΡ€Π΅ΡΡΠΈΡ CK7 / 8 ΠΈ C D133 ЦОК с ΠΌΠ°Ρ€ΠΊΠ΅Ρ€Π°ΠΌΠΈ стволовости CD44+ / C D24– ассоциирована с Ρ€Π°Π·Π²ΠΈΡ‚ΠΈΠ΅ΠΌ Ρ€Π°Π½Π½ΠΈΡ…, Π½ΠΎ Π½Π΅ ΠΏΠΎΠ·Π΄Π½ΠΈΡ… ΠΏΡ€ΠΈΠ·Π½Π°ΠΊΠΎΠ² Π°ΠΏΠΎΠΏΡ‚ΠΎΠ·Π° ΠΈ Π½Π΅ΠΊΡ€ΠΎΠ·Π°. Π¦ΠΈΡ€ΠΊΡƒΠ»ΠΈΡ€ΡƒΡŽΡ‰ΠΈΠ΅ ΠΎΠΏΡƒΡ…ΠΎΠ»Π΅Π²Ρ‹Π΅ ΠΊΠ»Π΅Ρ‚ΠΊΠΈ с отсутствиСм коэкспрСссии CK7 / 8 ΠΈ C D133 ΠΌΠΎΠ³Π»ΠΈ ΠΈΠΌΠ΅Ρ‚ΡŒ ΠΈ Ρ€Π°Π½Π½ΠΈΠ΅, ΠΈ ΠΏΠΎΠ·Π΄Π½ΠΈΠ΅ ΠΏΡ€ΠΈΠ·Π½Π°ΠΊΠΈ Π°ΠΏΠΎΠΏΡ‚ΠΎΠ·Π° ΠΈ Π½Π΅ΠΊΡ€ΠΎΠ·Π°. Π€Π΅Π½ΠΎΡ‚ΠΈΠΏΡ‹ ЦОК с ΠΏΡ€ΠΈΠ·Π½Π°ΠΊΠ°ΠΌΠΈ Ρ€Π°Π½Π½Π΅Π³ΠΎ Π°ΠΏΠΎΠΏΡ‚ΠΎΠ·Π°, ΡΠΊΡΠΏΡ€Π΅ΡΡΠΈΡ€ΡƒΡŽΡ‰ΠΈΠ΅ CD133, Π² ΠΎΡ‚Π»ΠΈΡ‡ΠΈΠ΅ ΠΎΡ‚ ЦОК Π±Π΅Π· экспрСссии CD133, ΡΠΎΡ…Ρ€Π°Π½ΡΡŽΡ‚ΡΡ Π² ΠΊΡ€ΠΎΠ²ΠΈ послС Π½Π΅ΠΎΠ°Π΄ΡŠΡŽΠ²Π°Π½Ρ‚Π½ΠΎΠΉ Ρ…ΠΈΠΌΠΈΠΎΡ‚Π΅Ρ€Π°ΠΏΠΈΠΈ.Π—Π°ΠΊΠ»ΡŽΡ‡Π΅Π½ΠΈΠ΅. Π‘ΡƒΡ‰Π΅ΡΡ‚Π²ΡƒΡŽΡ‚ фСнотипичСскиС ΠΏΡ€ΠΈΠ·Π½Π°ΠΊΠΈ ЦОК, ΠΈΠΌΠ΅ΡŽΡ‰ΠΈΠ΅ ΠΎΡ‚Π½ΠΎΡˆΠ΅Π½ΠΈΠ΅ ΠΊ стволовости ΠΈ ΡΠΏΠΈΡ‚Π΅Π»ΠΈΠ°Π»ΡŒΠ½ΠΎ-ΠΌΠ΅Π·Π΅Π½Ρ…ΠΈΠΌΠ°Π»ΡŒΠ½ΠΎΠΌΡƒ ΠΏΠ΅Ρ€Π΅Ρ…ΠΎΠ΄Ρƒ, сопряТСнныС с ΡƒΡΡ‚ΠΎΠΉΡ‡ΠΈΠ²ΠΎΡΡ‚ΡŒΡŽ ΠΊ Π°ΠΏΠΎΠΏΡ‚ΠΎΠ·Ρƒ ΠΈΠ»ΠΈ Ρ‡ΡƒΠ²ΡΡ‚Π²ΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎΡΡ‚ΡŒΡŽ ΠΊ Π½Π΅ΠΌΡƒ
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