170 results match your criteria: "Department of Clinical and Experimental Pathology[Affiliation]"

The connection between the F-actin and ribosome docking to the PM has been reported, but the exact mechanism has remained unclear. Previously, we discovered that gelsolin (GSN) forms complexes with numerous ribosomal proteins, including ribosomal protein SA (RPSA). Now, we have unraveled the mechanism of ribosome recruitment to the lipid nanodomains of the PM, with GSN playing a pivotal role in this process.

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Colorectal carcinoma brain metastases (n = 60) were studied using next-generation sequencing and immunohistochemistry. RAS and BRAF mutations were detected in 58.2% and 7.

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Determinants of Photodynamic Therapy Resistance in Cancer Cells.

Int J Mol Sci

November 2024

Department of Molecular and Cellular Biology, Wroclaw Medical University, Borowska 211A, 50-556 Wroclaw, Poland.

Photodynamic therapy (PDT) has emerged as a promising therapeutic approach owing to its non-invasive nature and minimal toxicity. PDT involves the administration of a photosensitizing agent (PS), which, upon light activation, induces a photodynamic reaction (PDR), leading to targeted cell destruction. However, developing resistance to PDT poses a significant challenge to its effectiveness.

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Article Synopsis
  • - Uveal melanoma (UM) is the most common eye cancer in adults and is mainly caused by mutations in the GNAQ and GNA11 genes, which are also linked to other disorders with different appearances.
  • - The article explores how these mutations contribute to various conditions like UM, skin blue nevi, and hemangiomas, highlighting shared pathways and potential targeted therapies for these diseases.
  • - It also examines the role of SOX10-positive perivascular cells in the complex effects of GNAQ/GNA11 mutations, suggesting that understanding their common molecular basis could lead to personalized treatment options.
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The capacity of cancer cells to migrate from a primary tumor, disseminate throughout the body, and eventually establish secondary tumors is a fundamental aspect of metastasis. A detailed understanding of the cellular and molecular mechanisms underpinning this multifaceted process would facilitate the rational development of therapies aimed at treating metastatic disease. Although various hypotheses and models have been proposed, no single concept fully explains the mechanism of metastasis or integrates all observations and experimental findings.

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  • Lymphovascular invasion (LVI) is a key feature in prostate cancer that correlates with an increased risk of biochemical recurrence and other negative clinical outcomes.
  • A systematic review of 94 studies showed that LVI significantly raises the likelihood of adverse factors such as advanced tumor stage, higher Gleason scores, and metastasis.
  • The results suggest that LVI could serve as an important prognostic marker for assessing cancer recurrence risks following radical prostatectomy, although the study had limitations due to data variability and reliance on nonrandomized data.
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  • The study investigates the distribution of high-risk HPV types in low and high-grade cervical lesions to understand their role in cervical cancer progression.
  • Using data from a large sample of screening tests, the researchers analyzed the prevalence of HPV types and dual staining status among different histological groups.
  • Results showed significant differences in HPV 16 prevalence and dual staining positivity between high-grade lesions and lower-grade or negative cases, emphasizing the varying risks associated with cervical lesion grades.
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Role of diffusion-weighted imaging in the diagnosis of pituitary region tumors.

Neuroradiology

September 2024

Department of Preclinical Sciences, Pharmacology and Medical Diagnostics, Faculty of Medicine, Wroclaw University of Science and Technology, Wroclaw, Poland.

Article Synopsis
  • This study investigates the effectiveness of Diffusion-Weighted Imaging (DWI) in improving the identification of sellar and parasellar tumors during routine pituitary MRI scans, recognizing a gap in current guidelines.
  • A retrospective analysis of 242 MRI scans revealed that invasive pituitary adenomas had significantly lower apparent diffusion coefficient (ADC) values compared to other tumor types, with specific cut-off points indicating high sensitivity and specificity for differentiation.
  • The findings suggest that incorporating DWI into standard MRI protocols can significantly enhance diagnostic accuracy for these tumors, with a quick scan time making it a practical addition to pituitary examinations.
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  • The study examines long-term survival risks and mortality following acute COVID-19 infections, emphasizing that risks continue beyond the initial illness phase and are influenced by factors like age and health conditions.
  • Researchers analyzed data from 651 patients and developed a prediction model using urinary peptides to estimate mortality risk, revealing that nearly 14% of post-COVID-19 patients died during follow-up.
  • The findings suggest that urinary peptides can effectively predict mortality in these patients, marking a significant advancement in understanding the post-acute effects of SARS-CoV-2 infection.
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  • Epithelial chemosensory cells, called tuft cells, are linked to tumor formation, especially in lung cancers, related to the POU2F3 transcription factor which indicates tuft cell lineage.
  • A study analyzed POU2F3 expression in over 8,000 tumor samples, finding positive expression in roughly 12.4% of epithelial tumors and 4.6% of mesenchymal/neuroectodermal tumors, with most neuroendocrine tumors showing strong POU2F3 presence.
  • Co-expression of POU2F3 with coactivators like POU2AF2 gives a more specific tumor marker, suggesting that while POU2F3 is sensitive for tuft cell differentiation
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Introduction: Lichen planopilaris (LPP) is an inflammatory, primary scarring alopecia, however its pathogenesis is not completely elucidated. S100A7 is a multifunctional, antimicrobial protein with proinflammatory properties. Interleukin-17 (IL-17) is implicated in the development of various autoimmune skin diseases.

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  • This study evaluated lymph node metastases in muscle-invasive bladder cancer patients who underwent a specific type of surgery called super-extended pelvic lymph node dissection (sePLND) and sentinel lymph node dissection (SLND).
  • Out of 54 patients analyzed, 41% had metastases in their lymph nodes, with the obturator fossa being the most common location for these metastases.
  • The findings suggest that metastases often occur on the opposite side of the tumor, making unilateral lymph node dissection risky, and combining sePLND with SLND offers better cancer staging.
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Background: Recently, a new World Health Organization Reporting System for Soft Tissue Cytopathology (WHO System) was introduced. To analyze the value of this system, routine fine-needle aspiration soft tissue tumor (STT) cases were reviewed.

Methods: Cytology samples of STTs collected between 1954 and 2022 at the Institut Curie were used (2214 cases, including 1376 primary tumors).

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Uveal melanoma (UM) is the most common primary intraocular tumor in adults, with no standardized treatment for advanced disease. Based on preliminary bioinformatical analyses DTYMK and PARP1 were selected as potential therapeutic targets. High levels of both proteins were detected in uveal melanoma cells and correlated with increased tumor growth and poor prognosis.

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Article Synopsis
  • Schlafen 11 (SLFN11) is a helicase that regulates how cells respond to stress during DNA replication, and its expression can predict treatment outcomes in cancer patients receiving certain therapies.
  • In a study involving 6,658 tumors, SLFN11 was found to be rare in common epithelial tumors (e.g., breast and prostate cancers) but prevalent in several more aggressive tumors and specific mesenchymal and neuroectodermal cancers.
  • The absence of SLFN11 may lead to worse outcomes for patients treated with DNA-damaging drugs, suggesting the need for alternative treatments for those cancers that lack this biomarker.
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Evaluation of AI-Driven LabTest Checker for Diagnostic Accuracy and Safety: Prospective Cohort Study.

JMIR Med Inform

August 2024

Department of Internal Medicine and Oncological Chemotherapy, Medical University of Silesia, Reymonta St. 8, Katowice, 40-027, Poland, +48 32 2591 202.

Background: In recent years, the implementation of artificial intelligence (AI) in health care is progressively transforming medical fields, with the use of clinical decision support systems (CDSSs) as a notable application. Laboratory tests are vital for accurate diagnoses, but their increasing reliance presents challenges. The need for effective strategies for managing laboratory test interpretation is evident from the millions of monthly searches on test results' significance.

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(1) : Kidney transplantation is the best therapy for patients with end-stage renal disease, but the risk of rejection complicates it. Indoleamine 2,3-dioxygenase 1 (IDO1), an enzyme involved in immune response modulation, has been suggested to play a role in transplant immunological injury. The aim of the study was to explore the expression of IDO1 in the interstitial foci of transplanted kidneys and its potential association with rejection episodes.

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Aims: Over 50% of breast cancer cases are "Human epidermal growth factor receptor 2 (HER2) low breast cancer (BC)", characterized by HER2 immunohistochemistry (IHC) scores of 1+ or 2+ alongside no amplification on fluorescence in situ hybridization (FISH) testing. The development of new anti-HER2 antibody-drug conjugates (ADCs) for treating HER2-low breast cancers illustrates the importance of accurately assessing HER2 status, particularly HER2-low breast cancer. In this study we evaluated the performance of a deep-learning (DL) model for the assessment of HER2, including an assessment of the causes of discordances of HER2-Null between a pathologist and the DL model.

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Psoriasis, a chronic immune-mediated skin disorder affecting over 125 million people globally, is characterized by abnormal keratinocyte proliferation and immune cell infiltration. Photodynamic therapy (PDT) remains underutilized in the treatment of psoriasis despite its potential as a promising and effective therapeutic approach. This study aimed to explore the efficacy of zinc phthalocyanine (ZnPc) and its sugar conjugates as potential antipsoriatic agents.

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Allogeneic hematopoietic cell transplantation (allo-HSCT) stands as an effective treatment method for various hematologic malignancies. However, graft-versus-host disease (GvHD), an intricate immunological phenomenon where donor immune cells target recipient tissues, remains a significant challenge, particularly in mismatched unrelated donors (MMUD). Post-transplant cyclophosphamide (PTCy) has emerged as a promising immunosuppressive strategy, revolutionizing haploidentical transplantation and demonstrating promise in MMUD settings.

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IL-17: a novel player in the pathogenesis of vulvar lichen sclerosus.

Postepy Dermatol Alergol

April 2024

Department of Dermatology, Venereology and Allergology, Wroclaw Medical University, Wroclaw, Poland.

Introduction: Vulvar lichen sclerosus (VLS) is a chronic progressive, lymphocyte-mediated inflammatory disease whose pathogenesis is complex and not fully elucidated.

Aim: In the current study we have investigated for the first time the expression of interleukin-17 (IL-17) and S100A7 in lesional skin obtained from female individuals with histologically confirmed VLS.

Material And Methods: In our study we used skin biopsies obtained from female patients with histologically confirmed VLS ( = 20) and skin samples from healthy age- and gender-matched individuals (plastic surgery procedures) ( = 10) serving as controls.

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Introduction: Lymphovascular invasion (LVI) is a pivotal histopathological parameter in prostate cancer (PCa), holding significant prognostic implications. Our study pursued a dual objective: firstly, to identify preoperative factors associated with LVI, aiming to unveil markers facilitating the recognition of patients prone to LVI during postoperative examination; and secondly, to assess postoperative outcomes correlated with LVI.

Methods: We retrospectively analyzed 861 nonmetastatic PCa patients who underwent radical prostatectomy (RP), investigating preoperative factors and postoperative outcomes.

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Promising Approaches in Plant-Based Therapies for Thyroid Cancer: An Overview of In Vitro, In Vivo, and Clinical Trial Studies.

Int J Mol Sci

April 2024

Department of Clinical and Experimental Pathology, Division of General and Experimental Pathology, Wroclaw Medical University, 50-368 Wroclaw, Poland.

Thyroid cancer, particularly undifferentiated tumors, poses a significant challenge due to its limited response to standard therapies. The incidence of thyroid cancer, predominantly differentiated carcinomas, is on the rise globally. Anaplastic thyroid carcinoma (ATC), though rare, is highly aggressive and challenging to treat.

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Targeting Pivotal Hallmarks of Cancer for Enhanced Therapeutic Strategies in Triple-Negative Breast Cancer Treatment-In Vitro, In Vivo and Clinical Trials Literature Review.

Cancers (Basel)

April 2024

Department of Clinical and Experimental Pathology, Division of General and Experimental Pathology, Wroclaw Medical University, 50-368 Wroclaw, Poland.

This literature review provides a comprehensive overview of triple-negative breast cancer (TNBC) and explores innovative targeted therapies focused on specific hallmarks of cancer cells, aiming to revolutionize breast cancer treatment. TNBC, characterized by its lack of expression of estrogen receptor (ER), progesterone receptor (PR), and human epidermal growth factor receptor 2 (HER2), presents distinct features, categorizing these invasive breast tumors into various phenotypes delineated by key elements in molecular assays. This article delves into the latest advancements in therapeutic strategies targeting components of the tumor microenvironment and pivotal hallmarks of cancer: deregulating cellular metabolism and the Warburg effect, acidosis and hypoxia, the ability to metastasize and evade the immune system, aiming to enhance treatment efficacy while mitigating systemic toxicity.

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