Publications by authors named "Can A"

Neuroendocrine carcinoma is a relatively rare tumor and its coexistence with other primary cancers is very exceptional. We present a case of a 63-year-old woman with biliary obstruction due to a high-grade neuroendocrine carcinoma located in ampulla of Vater who was found to have a synchronous sigmoid colon adenocarcinoma while undergoing staging laparotomy and pancreas head resection. Medical history was significant only for basal cell skin cancer.

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Purpose: The aim of this study was to investigate the effect of metabolic syndrome and insulin resistance at the time of diagnosis on the known prognostic factors of breast cancer in postmenopausal breast cancer patients.

Methods: The study included 71 patients with a recent diagnosis of postmenopausal breast cancer, admitted at the Medical Oncology outpatient clinic of the Izmir Ataturk Training and Research Hospital between June 2010 and June 2011. We determined whether the patients had metabolic syndrome and insulin resistance at diagnosis, and recorded known prognostic factors, such as tumor size, axillary lymph node involvement, presence of distant metastasis, tumor grade, estrogen receptor (ER), progesterone receptor (PR), and CerbB-2 status.

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Background: To investigate the predictive and prognostic effects of clinicopathologic and immunohistochemical (IHC) features in patients with gastrointestinal stromal tumours (GISTs).

Materials And Methods: Fifty-six patients who were diagnosed with GIST between 2002 and 2012 were retrospectively evaluated. Relationships between clinicopathologic/immunohistochemical factors and prognosis were investigated.

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There is increasing evidence of a biochemical link between oxidative stress and bone metabolism. Oxidative stress has been shown to be involved in bone resorption as it causes loss of bone mineral density (BMD). Paraoxonase 1 (PON1), can prevent these effects of the oxidative stress on bone formation.

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The voltammetric behavior of anticancer drug irinotecan (IRT) was investigated at poly (methylene blue)/multi-walled carbon nanotube (PMB/MWCNT) modified glassy carbon electrode (GCE). The modified electrode surface was characterized by a scanning electron microscope (SEM). The PMB/MWCNT modified GCE exhibits a distinct shift of the oxidation potential of IRT on the cathodic direction and a considerable enhancement of the peak current compared with bare electrode.

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Objective: The aim of this study was to evaluate the results of the endoscopic calcaneoplasty technique for the treatment of retrocalcaneal bursitis and Haglund's disease.

Methods: This study included 30 feet of 28 patients who underwent endoscopic surgery for Haglund's disease between 2003 and 2011. The inflamed bursa and posterosuperior surface of the calcaneus were removed with a shaver and bone resection performed until there was no friction on the Achilles tendon with the ankle in dorsiflexion.

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Progress in experimental stroke and translational medicine could be accelerated by high-resolution in vivo imaging of disease progression in the mouse cortex. Here, we introduce optical microscopic methods that monitor brain injury progression using intrinsic optical scattering properties of cortical tissue. A multi-parametric Optical Coherence Tomography (OCT) platform for longitudinal imaging of ischemic stroke in mice, through thinned-skull, reinforced cranial window surgical preparations, is described.

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Background: To assess the efficacy and tolerability of Cisplatin plus Gemcitabine combination in patients with brain metastases (BM) from breast cancer (BC).

Materials And Methods: Eighteen BC patients with BM who were treated with Cisplatin plus Gemcitabine regimen between 2003-2011 were evaluated.

Results: A median of 6 cycles of this regimen were received, in fifteen patients (83.

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Aims: To determine whether atrial-based pacing prevents atrial arrhythmias in adults with congenital heart disease (CHD) compared with ventricular pacing.

Methods And Results: All adult CHD patients from four participating centres with a permanent pacemaker were identified. Patients with permanent atrial arrhythmias at pacemaker implantation and patients who received a pacemaker for treatment of drug-refractory atrial arrhythmias were excluded.

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This study aimed to investigate the prognostic and predictive effect of FOXP3+ Tregs together with clinicopathologic factors in locally advanced breast cancer (LABC) patients. The medical records of 101 LABC patients who received neoadjuvant chemotherapy (NAC) between 2005 and 2012 were evaluated retrospectively. The density of intratumoral FOXP3+ lymphocytes in paraffin-embedded tissues was assessed by immunohistochemical analyses in appropriate cases.

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Article Synopsis
  • Limitations in identifying unique proteins and DNA in tissue samples hinder our understanding of health and disease.
  • The multiplexed fluorescence microscopy method (MxIF) allows for detailed analysis of multiple biological markers in tissue samples by chemically inactivating fluorescent dyes after imaging to enable reuse.
  • MxIF demonstrates similar accuracy to traditional methods in identifying protein markers while revealing significant diversity in cancer cells, paving the way for advancements in research and diagnostics.
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Purpose: Metastatic renal cell carcinoma (mRCC) bears a poor prognosis. We investigated the prognostic significance of some hematologic parameters of patients with mRCC.

Methods: We retrospectively reviewed the records of 53 patients with mRCC .

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Human serum paraoxonase contributes to the anti-atherogenic effect of high-density lipoprotein cholesterol (HDL-C) and has been shown to protect both low-density lipoprotein cholesterol (LDL-C) and HDL-C against lipid peroxidation. We investigated the effects of rosiglitazone on paraoxonase activity and metabolic parameters in patients with type 2 diabetes mellitus [50 patients (30 males, 20 females); mean ± SD age: 58.7 ± 9.

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Epithelial organ morphogenesis involves reciprocal interactions between epithelial and mesenchymal cell types to balance progenitor cell retention and expansion with cell differentiation for evolution of tissue architecture. Underlying submandibular salivary gland branching morphogenesis is the regulated proliferation and differentiation of perhaps several progenitor cell populations, which have not been characterized throughout development, and yet are critical for understanding organ development, regeneration, and disease. Here we applied a serial multiplexed fluorescent immunohistochemistry technology to map the progressive refinement of the epithelial and mesenchymal cell populations throughout development from embryonic day 14 through postnatal day 20.

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Background: Cytotoxic chemotherapy is the basic treatment for metastatic gastric cancer. The "docetaxel, cisplatin, 5-day infusion of 5-FU (DCF5)" regimen is regarded as an effective therapy. However, the poor toxicity profile of this regimen and administration by 5-day infusion are major drawbacks of this method.

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In this study, 5-chloro-3H-spiro-[1,3-benzothiazole-2,3'-indole]-2'(1'H)-one derivatives 3a-l were synthesized by the reaction of 1H-indole-2,3-diones 1a-l with 2-amino-4-chlorothiophenol 2 in ethanol. 3a-l were tested for their abilities to inhibit lipid peroxidation (LP), scavenge DPPH(•) and ABTS(•+) radicals, and to reduce Fe(3+) to Fe(2+). Most of the tested compounds exhibited potent scavenging activities against ABTS(•+) radical, reducing powers and strong inhibitory capacity on LP.

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Background: It is well known that tumor-infiltrating lymphocytes (TIL) and, to a lesser extent, peripheral hematologic parameters from patients with cancer have to effect on prognosis. The aim of this study was to evaluate the effect of hematologic parameters and TIL on prognosis of patients with gastric cancer.

Methods: 236 patients who had diagnosed as gastric adenocarcinoma.

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Background: Long-term survival is a problem with locally advanced and metastatic renal cell carcinomas. Sunitinib malate is an oral multitargeted tyrosine kinase inhibitor, but data on sunitinib use as a second line treatment in metastatic renal cell carcinoma (mRCC) are limited. Prognostic and predictive value of peripheral blood markers has been shown for many cancers.

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The aim of this study was to develop novel transdermal films of ondansetron HCl with high molecular weight chitosan as matrix polymer and 2-(2-ethoxy-ethoxy) ethanol (Transcutol®) as plasticizer. In this context, firstly the physicochemical properties of gels used to formulate transdermal films were characterized and, physicochemical properties and bioadhesiveness of the transdermal films prepared with chitosan gels were assessed. The impact of three different types of terpenes, namely limonene, nerolidol and eucalyptol on in vitro skin permeation of ondansetron from transdermal films were also examined.

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Background: This study aims to investigate indications and complications of permanent cardiac pacing in adults with congenital heart disease (CHD).

Methods And Results: Two-hundred and seventy-four CHD patients were identified who underwent permanent pacemaker implantation between 1972 and 2009. The indication for pacing was acquired sinus node or AV node conduction disease (63%), sinus node or AV node conduction disease after cardiac surgery (28%), and drug/arrhythmia-related indications (9%).

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Epithelioid hemangioendothelioma is a rare, low-grade malignant vascular tumour. It is frequently seen in the liver, but can occur in the lungs, bones, and other soft tissues. Although survival time might be reasonable in cases that can undergo liver transplantation, there is no consensus on the treatment of metastatic patients.

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Article Synopsis
  • Telomerase is an enzyme crucial for maintaining telomeres, often active in 90% of tumors but not in most normal cells.
  • Imetelstat sodium (GRN163L) is a new telomerase inhibitor that shows promise in preclinical trials for reducing telomerase activity in cancer cells and is currently being tested in clinical trials for lung cancer treatment.
  • GRN163L not only inhibits telomerase but also disrupts cell adhesion and alters the cytoskeleton in cancer cells, leading to halted proliferation and reduced metastasis, without relying on its telomerase activity.
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Background: Lithium is a mood stabilizer with both antidepressant and antimanic properties, however its mechanism of action is unclear. Identifying the genetic factors that influence lithium's therapeutic actions will be an important step to assist in identifying such mechanisms. We previously reported that lithium treatment of male mice has antidepressant-like effects in the C57BL/6J strain but that such effects were absent in the BALB/cJ strain.

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Sulphonylurea and phenylurea herbicides are two groups of herbicides that are most commonly used worldwide. Quantitative structure-toxicity relationship models were derived for estimating the acute oral toxicity of these herbicides to male rats. The 20 chemicals of the training set and the seven compounds of external testing set were described by means of using descriptors for lipophilicity, polarity and molecular geometry, as well as the calculation of quantum chemical descriptors for energy.

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