Publications by authors named "Akbulut H"

Background: Geriatric patients account for nearly half of new colorectal cancer (CRC) cases. This study compares clinicopathological features, treatments, outcomes, and frailty in elderly (≥ 70) and younger (< 70) CRC patients at our center.

Materials And Methods: Patients diagnosed with non-metastatic or de novo metastatic CRC between January 2015 and April 2024 were included.

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Introduction: Adjuvant chemoradiotherapy (CRT) is the optimal management strategy in resectable gastric cancer. There is a debate about the efficacy of more aggressive CRT plus chemotherapy regimens in adjuvant setting. This study aimed to compare the efficacy of adjuvant CRT plus docetaxel-cisplatin-fluorouracil (DCF) versus CRT plus fluorouracil-folinic acid (FUFA) in stage III gastric cancer.

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Low serum sodium affects cancer prognosis, but its impact on immunotherapy is unclear. Assessing the association of pre- and post-ICI treatment sodium levels with survival. We retrospectively analyzed patients receiving ICI in January 2012-December 2023, collecting serum sodium levels at treatment initiation and 4 weeks post-ICI, with overall survival (OS) as the primary outcome.

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This work aims to: (1) elucidate the immune response exhibited by CD4 + and CD8 + T lymphocyte cells in response to various infectious agents in calves suffering with neonatal diarrhea; and (2) determine and investigate the association between serum selenium levels and T lymphocyte subtypes in neonatal calves afflicted with neonatal diarrhea and infected with various infectious agents. The study encompassed a cohort of 50 calves, encompassing both sexes and various breeds, within the neonatal age range (1-28 days old). Subdivided into distinct groups, the calves were categorized based on the causative agents of neonatal diarrhea, including Rotavirus (n = 10), Cryptosporidium parvum (C.

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Background/aim: The role of PD-L1 in regulating the immunosuppressive tumor microenvironment via its binding on PD-1 receptors is extensively studied. The PD-1/PD-L1 axis is a significant way of cancer immune escape, and PD-L1 expression on tumor cells is suggested as a predictive marker for anti-PD-1/PD-L1 monoclonal antibodies (MoAbs). However, the tumor-intrinsic role of PD-L1 is not known well.

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Histamine and H1 receptors play a crucial role in the tumor microenvironment. Preclinical data showed that concomitant use of antihistamines and immune checkpoint inhibitors (ICIs) might increase the effect of ICIs. This study aimed to evaluate the impact of antihistamines on the oncological outcomes of ICIs.

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Although several agents showed some clinical activity in patients with recurrent thymoma, there is no standard treatment option. Here, we report a late relapse thymoma and pure red cell aplasia case, responsive to everolimus with over 5 years of clinical benefit following multiple lines of treatment. Everolimus controlled the rapidly progressive disease in our patient without significant toxicity.

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fruit is widely used in traditional and complementary medicine in Turkey for the treatment of different diseases in various forms such as molasses and tar. This study was carried out to evaluate the phenolic compounds, organic acid, sugar, and macro- and micromineral distributions of methanol and water extracts of fruit, as well as their antioxidant and antimicrobial potential. For this purpose, total phenolic content by spectrophotometer, phenolics, organic acids, and sugars distributions by HPLC in extracts of fruits, and macro- and micromineral element content by ICP-AES in fruit were determined.

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Background: Though the exact mechanisms regarding brain aging and its relation to neurodegenerative disorders are not precise, oxidative stress, the key regulators of apoptosis and autophagy, such as bcl-2 and beclin 1, seem to be the potential players in the aging of the cerebral cortex and hippocampus. As a type of nicotinamide adenine dinucleotide (NAD)-dependent deacetylases, sirtuin 2 (SIRT2) has been associated to age-related diseases. However, the exact role of SIRT2 in brain aging is not well studied.

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In this work, we introduce LiNiMnAlO (NMA), which is cobalt-free and has a high nickel content, and a conductive composite material to NMA by supporting it with a three-dimensional (3D) graphene aerogel (GA). With an easy freeze-drying approach, NMA nanoparticles are properly dispersed on graphene sheets, and GA creates a strong and conductive framework, significantly improving the structure and conductivity. The structure of the pure NMA and NMA/graphene aerogel (NMA/GA) composite was investigated by X-ray diffraction (XRD) and field emission scanning electron microscopy (FE-SEM).

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  • Adenoviral vectors (AV) are popular for vaccines and gene therapy due to their easy production, ability to grow in large quantities, and safety for human use, but their efficiency varies.
  • This study examined how different downstream treatment protocols and microfiltration methods affect the yield of viral vectors, specifically comparing the repeated freeze-thaw (RFT) and Tween-20 detergent lysis (DLT) methods.
  • Results indicated that a 2-hour incubation at 37 °C with Tween-20 proved optimal for virus recovery, while a 4-hour incubation at room temperature is also viable, leading to the initiation of a phase 1 clinical trial for the recombinant adenovirus studied.
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  • Pericytes, which are cells surrounding capillaries, are crucial for tumor blood vessel formation, and CSPG4, a protein released from these cells, plays a significant role in this process.
  • The study involved 50 colorectal cancer patients treated with Bevacizumab to assess the impact of CSPG4, VEGFA, and pericyte density on treatment effectiveness.
  • Results indicated that patients with CSPG4 present had better treatment responses and survival rates, while lower levels of VEGFA and vascular density correlated with longer progression-free survival.
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Immune checkpoint inhibitors (ICIs) have started a new era in treating patients with cancer. The effect of comorbidities and concomitant drug use on ICIs have become of interest in those patients. Data about the impact of hyperglycemia on response to ICIs in cancer patients are limited.

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Aim To assess the actionable genomic landscape of colon adenocarcinoma in the primary and metastatic tumor tissues. Methods The data from the American Association for Cancer Research (AACR) Project Genomics Evidence Neoplasia Information Exchange (GENIE) were used in this study. Colon adenocarcinoma patients with primary and metastatic tissue samples (distant organ and lymph node) were selected.

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  • The study aimed to analyze the epidemiological and clinical characteristics of newly diagnosed hepatocellular carcinoma (HCC) patients in Turkey, focusing on potential risk and prognostic factors.
  • A total of 547 patients were examined, revealing that Hepatitis B virus (HBV) was the most common cause of HCC, with many patients presenting with large tumors and advanced stages of the disease.
  • The findings indicated that over half of the patients were diagnosed with moderate-to-advanced HCC, while those diagnosed during follow-up had smaller tumors and earlier stages of the disease.
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Aim: To evaluate the prognostic role of the systemic immune-inflammation index (SII) in patients with operable gastric cancer.

Methods: We assessed 354 patients with operable gastric cancer from tertiary centers in Turkey. SII was calculated by following formula: [neutrophil (cells × 10/L) × platelet (cells × 10/L)]/lymphocyte (cells × 10/L).

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Background: The role of radiotherapy in the adjuvant treatment of gastric cancer (GC) remains to be elucidated. This study aimed to assess the additional benefit of radiotherapy in the adjuvant treatment of GC.

Materials And Methods: In this retrospective cohort study, we included 230 gastric adenocarcinoma patients who underwent D2 dissection between January 2004 and December 2019.

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We analyzed the peripheral blood lymphocyte subsets of cancer patients infected with intestinal parasites, with an aim to find out the relationship between the levels of different types of lymphocytes with the prognosis of patients. 201 cancer patients aged 18 and over were included. Stool samples of the patients were examined using native-lugol, trichrome, modified trichrome (Weber's Trichrome stain), and modified Ziehl-Neelsen staining methods.

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Melatonin has antioxidant, anti-apoptotic and anti-aging effects in the brain. Sirtuin2 (SIRT2) accumulates in the central nervous system with aging, and its inhibition appears to be protective in aging and aging-related neurodegenerative diseases. Forkhead Box-class O3a (FOXO3a) transcription factor is one of the main targets of SIRT2, and SIRT2-mediated FOXO3a deacetylation is closely related to aging, oxidative stress, and apoptosis.

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  • Intestinal ischemic reperfusion injury (IRI) poses significant clinical challenges due to high rates of morbidity and mortality, prompting research into therapeutic options like vascular endothelial growth factor (VEGF).
  • The study assessed the local effectiveness of VEGF in relation to its application timing during IRI in an experiment with 30 Wistar albino rats, comparing groups receiving VEGF at different stages of the injury process.
  • Results showed that both early and late VEGF applications reduced harmful inflammation markers and improved overall intestinal health, with the best outcomes observed when VEGF was administered just before ischemia.
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Using circulating tumor DNA (ctDNA) instead of historical clinicopathological factors to select patients for adjuvant chemotherapy (ACT) may reduce inappropriate therapy. MEDLINE was searched on 31 March 2020. Studies, including data related to the prognostic value of ctDNA in the colon cancer patients after surgery and after ACT, were included.

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  • * A study surveyed 356 cancer treatment centers across 54 countries, finding that 88.2% faced difficulties, with services reduced due to overwhelmed systems, shortages of protective equipment, and staff, leading to significant therapy interruptions for patients.
  • * Participants reported considerable patient harm from disrupted cancer and noncancer-related care, raising concerns about the long-term effects and highlighting the need for further research on how these interruptions impacted patients directly.
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  • - Osteopontin (OPN) is a protein linked to cancer progression and metastasis, and this study explores its role in predicting outcomes for patients with advanced gastric cancer.
  • - In this research involving 42 patients and 29 healthy controls, it was found that patients had significantly higher plasma OPN levels compared to controls, and those who responded to treatment had lower levels of OPN.
  • - The study concluded that serum OPN could serve as an important prognostic and predictive marker for overall survival in advanced gastric cancer patients receiving treatment.
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Recently, tailored synthesis of solid electrolytes satisfy multiple challenges, i.e. high ionic conductivity and wide (electro)chemical stability window is of great interest.

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