Epithelial-to-mesenchymal transition (EMT) is a complex cellular process that allows cells to change their phenotype from epithelial to mesenchymal-like. Type 3 EMT occurs during cancer progression. The aim of this study was to investigate the role of RNA-binding motif single-stranded interacting protein 3 (RBMS 3) in the process of EMT. To investigate the impact of RBMS 3 on EMT, we performed immunohistochemical (IHC) reactions on archived paraffin blocks of invasive ductal breast carcinoma (n = 449), allowing us to analyze the correlation in expression between RBMS 3 and common markers of EMT. The IHC results confirmed the association of RBMS 3 with EMT markers. Furthermore, we performed an in vitro study using cellular models of triple negative and HER-2-enriched breast cancer with the overexpression and silencing of RBMS 3. RT-qPCR and Western blot methods were used to detect changes at both the mRNA and protein levels. An invasion assay and confocal microscopy were used to study the migratory potential of cells depending on the RBMS 3 expression. The studies conducted suggest that RBMS 3 may potentially act as an EMT-promoting agent in the most aggressive subtype of breast cancer, triple negative breast cancer (TNBC), but as an EMT suppressor in the HER-2-enriched subtype. The results of this study indicate the complex role of RBMS 3 in regulating the EMT process and present it as a future potential target for personalized therapies and a diagnostic marker in breast cancer.

DOI: 10.20452/pamw.16491, Published online: May 04, 2023, Authors: Jakub Lambrinow, Filip Świątkowski, Marta Jurga, Paweł Gajdzis, Mariusz Chabowski

Introduction: Due to the increasing number of cases and the levels of mortality, colorectal cancer is still a major health problem. Therefore, the growing interest in the quality of life of patients and the assessment of the quality of life of patients with colorectal cancer seems to be particularly important. The aim of the study was to investigate and determine factors that have a significant impact on the QoL of patients who were diagnosed with colorectal cancer that was surgically treated in the Surgical Department of the 4th Military Clinical Hospital in Wroclaw. Methods: 102 respondents were enrolled into the study. The QLQ-C30, QLQ-CR29 as well as an original questionnaire regarding the socioeconomic factors were used for the assessment. The information was supplemented with patients’ clinical data. Results: According to the QLQ-C30 questionnaire the average QoL of the respondents was 55%. Factors such as male gender, younger age, higher BMI, no significant weight loss, living with family, lower level of education and being professionally active have significant positive impact on QoL. In contrary, patients with more advanced and malignant cancer with tumor located in the right half of the colon had worse QoL. The particular domains of QoL influenced by these factors were also identified. Determining these factors will allow for more effective treatment, for the shortening of the hospitalization and finally for the reduction of the costs. Conclusion: The better QoL of the patients with colorectal cancer treated surgically showed younger men, living with family and with the support from close people, professionally active, with primary level of education, and without significant weight loss, ie less than 5% of body weight in the last 6 months. Moreover, patients with cancer located in the left colon, at a lower stage, with a lower grading demonstrated a better QoL.

Creutzfeldt-Jakob disease (CJD) is a rare condition. In this study we describe the diagnosis of the disease in a 73-year old female, presenting dementia. Diagnostic tests unveiled characteristic features of CJD. The diagnosis of CJD was confirmed. It is important to always take into consideration the diagnosis of CJD in the diagnostic process of dementia. Purpose: The aim of this scientific paper is to present symptoms and diagnostic methods of Creutzfeldt-Jakob disease on the basis of a clinical case. Review Methods: We conducted our study as a literature review based on information gathered from PubMed, Embase, GoogleScholar using combinations of the following. As a part of study, we also present a case description from our materials from clinical practice.