Publications by authors named "Cengiz M"

Background: Isoproterenol (ISO) is a nonselective beta-adrenergic receptor agonist known for its vasodilatory effects. This experiment aims to investigate whether intrauterine ISO administration could alter vascular indices and follicular development in postpartum Holstein cows.

Objectives: The objectives are to evaluate the effects of intrauterine ISO administration on vascular changes and its impact on follicular development compared to placebo groups.

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Purpose: The aim of this study was to identify prognostic factors influencing overall survival (OS) in patients with gastric cancer treated with adjuvant chemoradiotherapy (CRT) and to develop a predictive model.

Methods: We retrospectively evaluated 245 non-metastatic gastric cancer patients who received adjuvant CRT or radiotherapy from 2010 to 2020. Survival analyses were performed using the Kaplan-Meier method.

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The purpose of the current study was to find out whether escin (ES) safeguarded experimental rats against cyclophosphamide (CP)-induced kidney injury. Twenty-four rats were randomly divided into four groups ( = 6). After the examination, histological and biochemical analyses were performed to assess the alterations in kidney tissue.

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Okra has recently attracted attention owing to its superior tolerance to high temperatures, greater adaptation to poor soil conditions, and having a robust plant structure. The plant contains a high amount of oil and valuable fatty acids; however, the main restriction of using okra seeds as an oil crop results from its gossypol contents. The aim of this study was to determine the oil content of okra landraces and to evaluate its potential as an oil crop.

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Background: In triple-negative breast cancer (TNBC) patients receiving adjuvant capecitabine, the impact of HER2 expression on survival outcomes is unclear.

Methods:  Between June 2017 and December 2023, 112 patients with TNBC who received adjuvant capecitabine due to residual masses after neoadjuvant chemotherapy (NACT) in three hospitals were identified. HER2 is analyzed through immunohistochemistry (IHC) and/or in situ hybridization in the core biopsy and/or post-surgical histopathologies.

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Purpose: The association of cardiac dosimetric parameters with survival in lung cancer patients is well established. However, most research has concentrated on patients undergoing definitive treatment. This study aims to investigate the relationship between cardiac dosimetric parameters and survival in patients receiving postoperative radiotherapy (PORT).

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Small cell lung cancer (SCLC) constitutes around 15% of lung cancer cases and stands as the primary cause of cancer-related fatalities in men and the second leading cause in women globally. In this study, our objective was to evaluate the levels of C-reactive protein (CRP) and procalcitonin (PCT) in newly diagnosed extensive-stage SCLC patients without evidence of infection. We aimed to demonstrate that elevated CRP and PCT levels may not solely indicate infection but could also be elevated in malignancies.

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: Attention-Deficit Hyperactivity Disorder (ADHD) is a prevalent neurodevelopmental disorder characterized by inattention, hyperactivity, and impulsivity. Traditional diagnostic methods, which depend on subjective assessments, often lack precision. This study evaluates the validity and reliability of a newly developed diagnostic tool, the Distractor-Embedded Auditory Continuous Performance Test (da-CPT), which integrates auditory stimuli with distractors to enhance the clinical utility of ADHD diagnosis.

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Purpose: Intensity-modulated radiotherapy (IMRT) is the standard treatment approach for nasopharyngeal cancer (NPC). IMRT enables effective sparing of the parotid glands and reduces the risk of xerostomia, a common complication of head and neck irradiation. Nevertheless, it is essential to determine whether the parotid-sparing IMRT (ps-IMRT) technique yields increased intra-/periparotid recurrence rates, which constitutes the main purpose of this study.

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Article Synopsis
  • Cyclophosphamide (CP) is an effective anticancer drug but can cause severe toxicity to the liver and other organs, limiting its use.
  • This study aims to investigate the protective effects of selenium (Se) and boron (B) against liver damage caused by CP in experimental rats, comparing their efficacy.
  • Results show that both Se and B can reverse the harmful effects of CP on liver health, with Se providing slightly better protection compared to B.
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Endometrial cancer (EC) is the most common gynecological malignancy in developed countries, and endometrial intraepithelial neoplasia (EIN) is the defined precancerous lesion. Obesity is considered a risk factor for both EC and EIN. On the other hand, mortality is often attributed to obesity-related conditions in patients with early-stage EC.

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Background And Aims: A limited number of drugs are used as standard or alternative therapies in autoimmune hepatitis (AIH). No specific recommendations are available for patients failing to respond to these therapies. We analyzed the efficacy and safety of infliximab in patients with AIH.

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Cyclophosphamide (CTX) is the most commonly used effective alkylating drug in cancer treatment, but its use is restricted because its toxic side effect causes testicular toxicity. CTX disrupts the tissue redox and antioxidant balance and the resulting tissue damage causes oxidative stress. In our study based on this problem, kefir against CTX-induced oxidative stress and testicular toxicity were investigated.

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Background: Ceranib-2, an acid ceramidase (AC) inhibitor, can inhibit cancer cell proliferation and tumor development. However, poor water solubility and low cellular bioavailability limit its efficacy in cancer treatment.

Methods And Results: This study aimed to investigate the cell death induced by ceranib-2 and its solid lipid nanoformulation (ceranib-2-SLN) produced by the hot homogenization technique and the synergistic relationship between ceramide and telomerase in vitro and in silico.

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Fermented prebiotic and probiotic products with kefir are very important to slow down and prevent the growth of tumors and to treat cancer by stimulating the immune response against tumor cells. Cyclophosphamide (CPx) is widely preferred in cancer treatment but its effectiveness in high doses is restricted because of its side effects. The aim of this study was to investigate the protective effects of kefir against CPx-induced heart and liver toxicity.

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Purpose: While three-dimensional radiotherapy (RT) causes high incidental nodal doses in bladder-only irradiation for muscle-invasive bladder cancer (MIBC), the impact on pelvic lymphatics is unclear in the era of intensity-modulated RT (IMRT). This study evaluates incidental doses to pelvic lymphatics in MIBC patients treated with IMRT.

Methods: The data of 40 MIBC patients treated with bladder-only IMRT and concurrent chemotherapy were retrospectively evaluated.

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Percutaneous dilatational tracheostomy (PDT) is the most commonly performed minimally invasive intensive care unit procedure worldwide. This study evaluated the percentage of consistency between the entry site observed with fiberoptic bronchoscopy (FOB) and the prediction for the PDT level based on pre-procedural ultrasonography (USG) in PDT procedures performed using the forceps dilatation method. The effect of morphological features on intervention sites was also investigated.

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Glutamate is an important neurotransmitter known to be effective in obsessive-compulsive disorder (OCD). The aim of this study is to investigate the relationship between the gene encoding the scaffold protein of ionotropic glutamate receptors and the gene encoding the glutamate transporter protein with OCD. Study groups consisted of 95 patients with OCD and 100 healthy controls.

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Background And Purpose: Stereotactic radiotherapy (SRT) is an effective treatment for head & neck (H&N) paragangliomas. Nevertheless, the timeline for achieving a tumor-volume-reduction (TVR) remains unclear.

Materials And Methods: Sixty-three cases with H&N paragangliomas received definitive SRT and were evaluated retrospectively.

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Article Synopsis
  • The MONALEESA-7 study is the only phase 3 research on CDK 4-6 inhibitors for premenopausal patients with hormone receptor-positive, HER2 negative metastatic breast cancer, but there is limited data on palbociclib's effectiveness.
  • Our multicenter, retrospective study included 319 patients to evaluate the effectiveness of palbociclib and ribociclib in first-line treatment and how dose reduction due to neutropenia affects progression-free survival (PFS).
  • Results showed similar median PFS for both drugs (26.83 months for palbociclib and 29.86 months for ribociclib) and no significant impact of dose reduction on effectiveness, with P
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This study was conducted to determine the effect of Mindfulness-Based Compassionate Living (MBCL) training given to the informal caregivers of palliative patients on burnout and caregiving burden. A single-blind, randomized, controlled, experimental study was conducted with 54 caregivers of patients admitted to a hospital palliative care unit. The participants were randomly allocated to the experimental group (n = 26) and control group (n = 28).

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Objectives: This study aims to examine the treatment outcomes and related factors in locally advanced sinonasal cancer across Turkiye.

Methods: Twelve centers participants of the Turkish Society for Radiation Oncology Head and Neck Study Group attended the study. One hundred and ninety-four patients treated with intensity-modulated radiation therapy between 2001 and 2021 were analyzed retrospectively.

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Article Synopsis
  • Esophageal carcinoma is very rare in children and adolescents, with two reported cases showing progressive dysphagia and no specific underlying risk factors.
  • One case was adenocarcinoma, which responded well to treatment, while the other was squamous cell carcinoma, which was unresponsive and led to the patient's death.
  • A review of literature on pediatric esophageal carcinoma revealed a high incidence of progressive dysphagia, a common occurrence of squamous cell carcinoma, and a poor prognosis due to metastasis in many cases at diagnosis, highlighting the need for collaborative treatment efforts.
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Background: Vaccines against coronavirus disease-19 (COVID-19) have been effective in preventing symptomatic diseases, hospitalizations, and intensive care unit (ICU) admissions. However, data regarding the effectiveness of COVID-19 vaccines in reducing mortality among critically ill patients with COVID-19 remains unclear.

Aims: To determine the vaccination status and investigate the impact of the COVID-19 vaccine on the 28-day mortality in critically ill patients with COVID-19.

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