TR Dizin İndeksli Yayınlar Koleksiyonu / TR Dizin Indexed Publications Collection
Permanent URI for this collectionhttps://hdl.handle.net/20.500.14365/4
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Article Upregulated Acute Systemic Inflammation-Related Genes Based on Endotoxin Exposure Provide ‘Survival Benefit’ or Create ‘High Risk of Death’ in Leukaemia and Colon Cancer(Istanbul University, 2024-07-10) Duran, Gizem Ayna; Duran, Assist. Prof. Dr. Gizem Ayna; Ayna Duran, GizemObjective: Although endotoxin exposure has been shown to trigger innate immune responses and promote cancer, it has also been shown to prevent cancer formation. In our study, survival analysis was performed to determine whether the upregulated genes triggered by endotoxins have hazardous effects on cancers or provide a survival benefit. Materials and Methods: Gene intensity values of control and bacterial endotoxin-administered individuals were obtained from the Gene Expression Omnibus database. Using the R "Linear Models for Microarray Data" package, differentially expressed gene analyses were conducted to determine genes that differ between healthy and bacterial endotoxin-administered samples. "ShinyGo 0.80" web-based tool was used to determine the disease types indicated by these genes. The "Kaplan-Meier Plotter" web-based tool was used to conduct survival analysis. Results: Genes that create an innate immune response to bacterial endotoxin exposure and are upregulated differently than in individuals without exposure were identified. According to gene enrichment analyses, the two main types of cancer identified were leukaemia/lymoma and colon cancer. We detected that MLF1, STAT5B, and BCL3 genes led to poor survival; however, the ARHGAP26 gene was protective for acute myeloid leukaemia patients. In the case of colon cancer, SMAD7 and TLR2 genes were determined as leading to "high risk of death". Conclusion: Once the systemic inflammation-related genes identified in our study are confirmed through laboratory experiments in samples taken from solid tissue in the case of colon cancer and at the level of genes obtained from blood samples in leukemias, genetically targeted treatments will also be possible.Article Citation - WoS: 2Paramedian Forehead Flap in Large Nasal Skin Defects: Twenty-years' Experience(Galenos Publ House, 2022-11-15) Apaydin, Fazil; Kaya, Isa; Uslu, Mustafa; Berber, VeyselObjective: Skin cancers occur most commonly in the head and neck region where the nose is the most commonly affected unit. The nose is the part of the face that is most exposed to trauma, sunlight, and other environmental factors. From the aesthetic and functional point of view, reconstruction of the defects occurring after skin cancer removal creates a great challenge for the surgeon. In this retrospective study, we present the success rates achieved in the past 20 years with paramedian forehead flaps used for repairing large defects of the nose.Methods: The study included 62 patients who underwent paramedian forehead flap due to nasal skin tumor [basal cell carcinoma (BCC) and squamous cell carcinoma (SCC)] in Ege University Faculty of Medicine Otolaryngology Department between 2000 and 2020. Data on follow-up time, patients' age and gender, defect sizes, and tumor types were obtained retrospectively from patient files, histopathologic examination results and patient photographs. Additional diseases such as diabetes, hypertension, and coronary artery disease that could affect flap success, were noted.Results: Out of 62 patients 29 (46.8%) were female and 33 (53.2%) were male. Their mean age was 61.4 (range: 46-88) years. Mean follow-up period was 125.6 (8-244) months. Of the 62 patients 33 (53.2%) were operated on for BCC and 29 (46.8%) for SCC. Four patients (6.5%) had recurrences during their follow-up. There was no loss of the paramedian forehead flap.Conclusion: Paramedian forehead flap is a reliable option in the reconstruction of larger defects of the nose even in smokers and elderly patients who have comorbid diseases.