81 research outputs found

    Бубпопуляции ΠΈΠ½Ρ‚Ρ€Π°Ρ‚ΡƒΠΌΠΎΡ€Π°Π»ΡŒΠ½Ρ‹Ρ… эффСкторных ΠΊΠ»Π΅Ρ‚ΠΎΠΊ ΠΏΡ€ΠΈ Ρ€Π°ΠΊΠ΅ ΠΌΠΎΠ»ΠΎΡ‡Π½ΠΎΠΉ ΠΆΠ΅Π»Π΅Π·Ρ‹ (ΠΎΠ±Π·ΠΎΡ€ Π»ΠΈΡ‚Π΅Ρ€Π°Ρ‚ΡƒΡ€Ρ‹ ΠΈ прСдставлСниС собствСнных Π΄Π°Π½Π½Ρ‹Ρ…)

    Get PDF
    Breast cancer (BC) is most prevalent female malignancy worldwide. Despite advances in BC diagnosis and progress in drug therapy, a series of challenges associated with emergent tumour resistance causing the disease escalation still remain. Immune evasion is among the driving forces of tumour resistance against modern treatments, which promotes world-active research into the mechanisms of tumourβ€”immune interaction.Tumour microenvironment is known to contribute greatly to the nature of this interaction. Immune cells are constitutive of tumour microenvironment as tumour-associated macrophages, myeloid-derived suppressor cells and tumour-infi ltrating lymphocytes. Tumour-infi ltrating lymphocytes are represented by B-, T- and NK-cells, which localisation and subpopulation structure in tumour may possess a prognostic and clinical significance. Th e infi ltration density by certain effector cell types prior to chemotherapy is an important predictor of patient survival. Putting otherwise, the presence of effector lymphocyte subpopulations in tumour defi nes the strength of antitumour immunity and may establish the success of drug treatment.This study analysed the infiltration levels of CD3, CD4, CD20 and CD38 lymphocytes in several molecular BC subtypes. Tumour immunophenotyping was performed in cryosectioning and immunofl uorescence assays with a ZEISS AXIOSKOP microscope, Germany. We analysed 96 luminal BC (37 subtype A (38.5Β %), 52 B-Her2-negative subtype (54.2Β %), 7 B-Her2-positive subtype (7.3Β %)) and non-luminal BC samples (3 HER2+ subtype (14.3Β %), 18 triple-negative subtype (85.7Β %)). The infiltration and antigen expression patterns have been assessed. Analyses of tumour-infi ltrating subpopulations revealed lower infiltration in luminal BC vs. other subtypes, albeit at no significance.Π Π°ΠΊ ΠΌΠΎΠ»ΠΎΡ‡Π½ΠΎΠΉ ΠΆΠ΅Π»Π΅Π·Ρ‹ (Π ΠœΠ–) являСтся самым распространСнным злокачСствСнным Π½ΠΎΠ²ΠΎΠΎΠ±Ρ€Π°Π·ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ ΡƒΒ ΠΆΠ΅Π½Ρ‰ΠΈΠ½ Π²Β ΠΌΠΈΡ€Π΅. НСсмотря на достигнутыС успСхи в диагностикС Π ΠœΠ– и новСйшиС лСкарствСнныС Ρ€Π΅ΠΆΠΈΠΌΡ‹ лСчСния, остаСтся Π΅Ρ‰Π΅ Ρ†Π΅Π»Ρ‹ΠΉ ряд Π½Π΅Ρ€Π΅ΡˆΠ΅Π½Π½Ρ‹Ρ… Π·Π°Π΄Π°Ρ‡, связанных с  Ρ€Π°Π·Π²ΠΈΡ‚ΠΈΠ΅ΠΌ ΠΎΠΏΡƒΡ…ΠΎΠ»Π΅Π²ΠΎΠΉ рСзистСнтности ΠΈ, ΠΊΠ°ΠΊ слСдствиС, прогрСссированиСм заболСвания. Одним ΠΈΠ·Β Ρ„Π°ΠΊΡ‚ΠΎΡ€ΠΎΠ², ΠΎΠΏΡ€Π΅Π΄Π΅Π»ΡΡŽΡ‰ΠΈΡ… ΡƒΡΡ‚ΠΎΠΉΡ‡ΠΈΠ²ΠΎΡΡ‚ΡŒ ΠΎΠΏΡƒΡ…ΠΎΠ»ΠΈ к соврСмСнным ΠΌΠ΅Ρ‚ΠΎΠ΄Π°ΠΌ лСчСния, являСтся Π΅Π΅ ΡΠΏΠΎΡΠΎΠ±Π½ΠΎΡΡ‚ΡŒ ΡƒΠΊΠ»ΠΎΠ½ΡΡ‚ΡŒΡΡ ΠΎΡ‚Β ΠΈΠΌΠΌΡƒΠ½Π½ΠΎΠ³ΠΎ ΠΎΡ‚Π²Π΅Ρ‚Π°. ΠŸΠΎΡΡ‚ΠΎΠΌΡƒ на сСгодняшний дСнь ΡƒΡ‡Π΅Π½Ρ‹ΠΌΠΈ всСго ΠΌΠΈΡ€Π° достаточно ΠΌΠ½ΠΎΠ³ΠΎ внимания удСляСтся ΠΈΠ·ΡƒΡ‡Π΅Π½ΠΈΡŽ ΠΌΠ΅Ρ…Π°Π½ΠΈΠ·ΠΌΠΎΠ² взаимодСйствия ΠΎΠΏΡƒΡ…ΠΎΠ»ΠΈ с иммунной систСмой ΠΎΡ€Π³Π°Π½ΠΈΠ·ΠΌΠ°.Π˜Π·Π²Π΅ΡΡ‚Π½ΠΎ, Ρ‡Ρ‚ΠΎ ΠΌΠΈΠΊΡ€ΠΎΠΎΠΊΡ€ΡƒΠΆΠ΅Π½ΠΈΠ΅ ΠΎΠΏΡƒΡ…ΠΎΠ»ΠΈ вносит Π·Π½Π°Ρ‡ΠΈΡ‚Π΅Π»ΡŒΠ½Ρ‹ΠΉ Π²ΠΊΠ»Π°Π΄ Π²Β Ρ„ΠΎΡ€ΠΌΠΈΡ€ΠΎΠ²Π°Π½ΠΈΠ΅ Ρ…Π°Ρ€Π°ΠΊΡ‚Π΅Ρ€Π° Π΄Π°Π½Π½ΠΎΠ³ΠΎ взаимодСйствия. Π§Π°ΡΡ‚ΡŒΡŽ микроокруТСния ΠΎΠΏΡƒΡ…ΠΎΠ»ΠΈ ΡΠ²Π»ΡΡŽΡ‚ΡΡ ΠΈΠΌΠΌΡƒΠ½Π½Ρ‹Π΅ ΠΊΠ»Π΅Ρ‚ΠΊΠΈ, ΠΊΠΎΡ‚ΠΎΡ€Ρ‹Π΅ ΠΌΠΎΠ³ΡƒΡ‚ Π±Ρ‹Ρ‚ΡŒ ΠΎΠΏΡƒΡ…ΠΎΠ»ΡŒΠ°ΡΡΠΎΡ†ΠΈΠΈΡ€ΠΎΠ²Π°Π½Π½Ρ‹ΠΌΠΈ ΠΌΠ°ΠΊΡ€ΠΎΡ„Π°Π³Π°ΠΌΠΈ, супрСссорными ΠΊΠ»Π΅Ρ‚ΠΊΠ°ΠΌΠΈ ΠΌΠΈΠ΅Π»ΠΎΠΈΠ΄Π½ΠΎΠ³ΠΎ происхоТдСния, ΠΎΠΏΡƒΡ…ΠΎΠ»ΡŒ-ΠΈΠ½Ρ„ΠΈΠ»ΡŒΡ‚Ρ€ΠΈΡ€ΡƒΡŽΡ‰ΠΈΠΌΠΈ Π»ΠΈΠΌΡ„ΠΎΡ†ΠΈΡ‚Π°ΠΌΠΈ. Π›ΠΈΠΌΡ„ΠΎΡ†ΠΈΡ‚Ρ‹, ΠΈΠ½Ρ„ΠΈΠ»ΡŒΡ‚Ρ€ΠΈΡ€ΡƒΡŽΡ‰ΠΈΠ΅ ΠΎΠΏΡƒΡ…ΠΎΠ»ΡŒ, прСдставлСны Π’-, Π’-, NK-ΠΊΠ»Π΅Ρ‚ΠΊΠ°ΠΌΠΈ, локализация ΠΊΠΎΡ‚ΠΎΡ€Ρ‹Ρ… ΠΈΒ ΠΈΡ… субпопуляционный состав Π²Β ΠΎΠΏΡƒΡ…ΠΎΠ»ΠΈ ΠΌΠΎΠ³ΡƒΡ‚ ΠΈΠΌΠ΅Ρ‚ΡŒ Ρ€Π°Π·Π½ΠΎΠ΅ прогностичСскоС и клиничСскоС Π·Π½Π°Ρ‡Π΅Π½ΠΈΠ΅. ΠŸΠ»ΠΎΡ‚Π½ΠΎΡΡ‚ΡŒ ΠΈΠ½Ρ„ΠΈΠ»ΡŒΡ‚Ρ€Π°Ρ†ΠΈΠΈ ΠΎΡ‚Π΄Π΅Π»ΡŒΠ½Ρ‹ΠΌΠΈ Π²ΠΈΠ΄Π°ΠΌΠΈ эффСкторных ΠΊΠ»Π΅Ρ‚ΠΎΠΊ Π΄ΠΎΒ Ρ…ΠΈΠΌΠΈΠΎΡ‚Π΅Ρ€Π°ΠΏΠΈΠΈ слуТит Π²Π°ΠΆΠ½Ρ‹ΠΌ ΠΏΡ€Π΅Π΄ΠΈΠΊΡ‚ΠΎΡ€ΠΎΠΌ выТиваСмости Π±ΠΎΠ»ΡŒΠ½Ρ‹Ρ…. Π˜Π½Ρ‹ΠΌΠΈ словами, присутствиС субпопуляций эффСкторных Π»ΠΈΠΌΡ„ΠΎΡ†ΠΈΡ‚ΠΎΠ² Π²Β ΠΎΠΏΡƒΡ…ΠΎΠ»ΠΈ Ρ…Π°Ρ€Π°ΠΊΡ‚Π΅Ρ€ΠΈΠ·ΡƒΠ΅Ρ‚ ΡΡ‚Π΅ΠΏΠ΅Π½ΡŒ напряТСнности ΠΏΡ€ΠΎΡ‚ΠΈΠ²ΠΎΠΎΠΏΡƒΡ…ΠΎΠ»Π΅Π²ΠΎΠ³ΠΎ ΠΈΠΌΠΌΡƒΠ½Π½ΠΎΠ³ΠΎ ΠΎΡ‚Π²Π΅Ρ‚Π° ΠΈΒ ΠΌΠΎΠΆΠ΅Ρ‚ ΠΎΠΏΡ€Π΅Π΄Π΅Π»ΡΡ‚ΡŒ ΡƒΡΠΏΠ΅ΡˆΠ½ΠΎΡΡ‚ΡŒ лСкарствСнного лСчСния.Π’ Π΄Π°Π½Π½ΠΎΠΌ исслСдовании ΠΏΡ€ΠΎΠ°Π½Π°Π»ΠΈΠ·ΠΈΡ€ΠΎΠ²Π°Π½Ρ‹ ΡƒΡ€ΠΎΠ²Π½ΠΈ ΠΈΠ½Ρ„ΠΈΠ»ΡŒΡ‚Ρ€Π°Ρ†ΠΈΠΈ CD3, CD4, CD20, Π‘D38Β  Π»ΠΈΠΌΡ„ΠΎΡ†ΠΈΡ‚Π°ΠΌΠΈ ΠΏΡ€ΠΈ Π½Π΅ΡΠΊΠΎΠ»ΡŒΠΊΠΈΡ… молСкулярных ΠΏΠΎΠ΄Ρ‚ΠΈΠΏΠ°Ρ… Π ΠœΠ–. Π˜ΠΌΠΌΡƒΠ½ΠΎΡ„Π΅Π½ΠΎΡ‚ΠΈΠΏΠΈΡ€ΠΎΠ²Π°Π½ΠΈΠ΅ ΠΎΠΏΡƒΡ…ΠΎΠ»ΠΈ ΠΏΡ€ΠΎΠ²Π΅Π΄Π΅Π½ΠΎ на криостатных срСзах ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΎΠΌ иммунофлуорСсцСнции (микроскоп Zeiss (Axioskop, ГСрмания)). ΠŸΡ€ΠΎΠ°Π½Π°Π»ΠΈΠ·ΠΈΡ€ΠΎΠ²Π°Π½Ρ‹ 96Β  ΠΎΠ±Ρ€Π°Π·Ρ†ΠΎΠ² люминального Π ΠœΠ– (37 (38,5Β  %)Β  β€” ΠΏΠΎΠ΄Ρ‚ΠΈΠΏ А; 52 (54,2Β  %)Β  β€” Π’-Her2-Π½Π΅Π³Π°Ρ‚ΠΈΠ²Π½Ρ‹ΠΉ ΠΏΠΎΠ΄Ρ‚ΠΈΠΏ; 7 (7,3Β  %)Β  β€” Π’-Her2-ΠΏΠΎΠ·ΠΈΡ‚ΠΈΠ²Π½Ρ‹ΠΉ ΠΏΠΎΠ΄Ρ‚ΠΈΠΏ) и нСлюминального Π ΠœΠ– (3 (14,3Β %)Β β€” HER2+ ΠΏΠΎΠ΄Ρ‚ΠΈΠΏ; 18 (85,7Β %)Β β€” Ρ‚Ρ€ΠΈΠΆΠ΄Ρ‹ Π½Π΅Π³Π°Ρ‚ΠΈΠ²Π½Ρ‹ΠΉ ΠΏΠΎΠ΄Ρ‚ΠΈΠΏ). ΠžΡ†Π΅Π½ΠΈΠ²Π°Π»ΠΈΡΡŒ Ρ…Π°Ρ€Π°ΠΊΡ‚Π΅Ρ€ ΠΈΠ½Ρ„ΠΈΠ»ΡŒΡ‚Ρ€Π°Ρ†ΠΈΠΈ ΠΈΒ Π²Ρ‹Ρ€Π°ΠΆΠ΅Π½Π½ΠΎΡΡ‚ΡŒ экспрСссии Π°Π½Ρ‚ΠΈΠ³Π΅Π½ΠΎΠ². Анализ уровня ΠΈΠ½Ρ„ΠΈΠ»ΡŒΡ‚Ρ€Π°Ρ†ΠΈΠΈ субпопуляциями Π»ΠΈΠΌΡ„ΠΎΡ†ΠΈΡ‚ΠΎΠ² установил, Ρ‡Ρ‚ΠΎ ΠΏΡ€ΠΈ люминальном Π ΠœΠ– Π²Ρ‹Ρ€Π°ΠΆΠ΅Π½Π½ΠΎΡΡ‚ΡŒ ΠΈΠ½Ρ„ΠΈΠ»ΡŒΡ‚Ρ€Π°Ρ†ΠΈΠΈ мСньшС, Ρ‡Π΅ΠΌ ΠΏΡ€ΠΈ Π΄Ρ€ΡƒΠ³ΠΈΡ… ΠΏΠΎΠ΄Ρ‚ΠΈΠΏΠ°Ρ…, ΠΎΠ΄Π½Π°ΠΊΠΎ достовСрной связи Π½Π΅Β ΠΎΠ±Π½Π°Ρ€ΡƒΠΆΠ΅Π½ΠΎ

    A Case of Medullary Carcinoma of the Jejunum Combined with the Intestinal Lymphangiectasia Accompanied by the Malabsorption Syndrome

    Get PDF
    Aim: to present a clinical and morphological observation of an extremely rare combination of medullary carcinoma of the jejunum and intestinal lymphangiectasia in a 33-year-old patient with clinical features of malabsorption syndrome over the 10 years.Key points. An autopsy revealed a tumor formation spreading from the wall of the jejunum to the mesentery, with metastases to the mesenteric lymph nodes. The medullary carcinoma with positive expression of Π‘D117, DOG1, EMA, PanCK, PDL-1, vimentin, mosaic non-intense expression of CA19-9, calretinin, CD10, CDX2, CEA, MUC-5AC, SATB2, and negative reaction to ALK, CD3, CD8, CD20, CD30, CD31, CD34, CD45, CD56, chromogranin, CK7, CK20, desmin. The proliferative index was high: Ki-67 > 80 %. Moreover, during the histological examination of the intestinal wall, intestinal lymphangiectasia complicated by the malabsorption syndrome was revealed.Conclusion. The uniqueness of this clinical and morphological case is in the combination of medullary carcinoma of the jejunum metastasized to the mesenteric lymph nodes with the underlying intestinal lymphangiectasia accompanied by the development of malabsorption syndrome

    The contribution of PA-X to the virulence of pandemic 2009 H1N1 and highly pathogenic H5N1 avian influenza viruses

    Get PDF
    PA-X is a novel protein encoded by PA mRNA and is found to decrease the pathogenicity of pandemic 1918 H1N1 virus in mice. However, the importance of PA-X proteins in current epidemiologically important influenza A virus strains is not known. In this study, we report on the pathogenicity and pathological effects of PA-X deficient 2009 pandemic H1N1 (pH1N1) and highly pathogenic avian influenza H5N1 viruses. We found that loss of PA-X expression in pH1N1 and H5N1 viruses increased viral replication and apoptosis in A549 cells and increased virulence and host inflammatory response in mice. In addition, PA-X deficient pH1N1 and H5N1 viruses up-regulated PA mRNA and protein synthesis and increased viral polymerase activity. Loss of PA-X was also accompanied by accelerated nuclear accumulation of PA protein and reduced suppression of PA on non-viral protein expression. Our study highlights the effects of PA-X on the moderation of viral pathogenesis and pathogenicity
    • …
    corecore