Browsing by Author "Ürün, M."

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Efficacy of Gemcitabine Plus Nab-Paclitaxel in Second-Line Treatment of Metastatic Pancreatic Cancer
(Nature Research, 2025) Sezgin, Y.; Karhan, O.; Aldemir, M.N.; Ürün, M.; Erçek, B.M.; Urakcı, Z.; Ergün, Y.
Despite numerous studies on second-line therapies in metastatic pancreatic cancer, there is no randomized study evaluating the efficacy of gemcitabine plus nab-paclitaxel as a second-line treatment. This study aims to examine the efficacy of gemcitabine plus nab-paclitaxel in second-line therapy. In this retrospective study, a total of 218 patients from 23 centers were included. The primary endpoint was progression-free survival (PFS), secondary endpoints included overall survival (OS), treatment efficacy based on ECOG performance status (PS), and tumor marker (CEA, CA 19 − 9) levels. In the second-line treatment with gemcitabine plus nab-paclitaxel, the median PFS was 5.1 months (95% CI, 5.6 to 7.1), and the median OS was 8.6 months (95% CI, 7.3 to 10.0). Median PFS was 6.6 months in patients with normal CEA levels compared to 4.4 months in patients with high CEA levels (P = 0.01). Median PFS was 6 months in patients with ECOG PS 0–1 compared to 3.8 months in patients with PS 2 (P < 0.01). This study demonstrates the contribution of gemcitabine plus nab-paclitaxel in both OS and PFS in second-line treatment of metastatic pancreatic cancer. It was found to be a good option especially for young patients with good ECOG PS. © The Author(s) 2025.
Evaluation of the Healing and Protective Properties of Adipose-Derived Mesenchymal Stem Cells From Cisplatin-Induced Liver and Kidney Damage
(Verduci Editore s.r.l, 2024) Ürün, M.; Bora, E.S.; Acar, H.; Erbas, O.
OBJECTIVE: The occurrence of nephrotoxicity and hepatotoxicity as a result of cisplatin administration is a major concern in clinical practice. This study examined the potential protective effects of administering mesenchymal stem cells (MSCs) on the renal and hepatic damage caused by cisplatin. Moreover, the study investigated the potential protective effects of administering Adipose-Derived Mesenchymal Stem Cells (ADMSC) to counteract the harmful effects of cisplatin-induced kidney and liver damage. MATERIALS AND METHODS: Male Sprague-Dawley rats were divided into three groups: normal control, cisplatin + saline, and cisplatin + ADMSC. Cisplatin was administered to induce toxicity, and ADMSC was administered intravenously as a potential therapeutic intervention. Biochemical parameters and histopathological changes were assessed in the kidney and liver tissues. Statistical analyses were performed using a one-way ANOVA. RESULTS: Cisplatin increased malondialdehyde (MDA), tumor necrosis factor alfa (TNF-Alfa), IL-6, alanine transaminase (ALT), creatinine, Galectin-3, Tissue growth factor beta 1 (TGF-beta 1), compared to the normal control group. Cisplatin-MSC reduced these levels. Histopathology showed that cisplatin caused kidney tubular epithelial necrosis, luminal necrotic debris, tubular dilatation, interstitial inflammation, liver sinusoidal and central vein dilatation, congestion, necrosis, and cytoplasmic vacuolization. ADMSC administration significantly reduced histopathological changes. CONCLUSIONS: These findings highlight the potential therapeutic benefits of mesenchymal stem cell (MSC) administration in mitigating cisplatin-induced nephrotoxicity and hepatotoxicity. MSC treatment demonstrated protective effects by reducing oxidative stress, inflammatory markers, and histopathological alterations. Further investigations are warranted to elucidate the precise mechanisms underlying these protective effects and evaluate their clinical implications for managing cisplatin-induced organ damage. © 2024 Verduci Editore s.r.l. All rights reserved.
The Role Of Biomarkers In Predicting Neoadjuvant Treatment Response In Gastric Cancer
(Yuzuncu Yil Universitesi Tip Fakultesi, 2025) Sezgin, Y.; Ürün, M.
Gastric cancer remains an important health problem in terms of both its incidence and mortality. The standard treatment for non-metastatic locally advanced disease is neoadjuvant chemotherapy, followed by surgery. In this study, we investigated the role of the HALP score and other immunonutritional biomarkers in predicting the response to treatment in patients with locally advanced gastric cancer receiving neoadjuvant chemotherapy. A retrospective evaluation was conducted on patients who received neoadjuvant chemotherapy for gastric cancer and were treated and followed up at the Van Yüzüncü Yıl University Faculty of Medicine, Dursun Odabaşı Medical Center, and Van Training and Research Hospital between 2015 and 2024. In this study, the following parameters were examined: pretreatment hemogram parameters, tumor biomarkers, disease stage at the time of diagnosis, and tumor invasion characteristics. The objective of this study was to ascertain the relationship between these parameters and response to neoadjuvant treatment. A total of 183 patients were included in the study, of which 62 (33.9%) were female and 121 (66.1%) were male. A statistically significant correlation was identified between the treatment response status of patients and the type of surgery, neural invasion, vascular invasion, TNM classification, HER2 status, and neoadjuvant regimen status (p < 0.05). Our findings indicate that age, neural invasion, vascular invasion, HER2 status, and chemotherapy regimen, among clinicopathological features, and tumor markers (CEA and CA 19-9), white blood cell, lymphocyte, and monocyte counts, among laboratory values, can predict the response in neoadjuvant patients. © 2025, Yuzuncu Yil Universitesi Tip Fakultesi. All rights reserved.