Publications by authors named "Aytekin M"

Objective: Gastric cancer is the second most common cancer in the world, accounting for 650,000 deaths per year, and is observed in approximately 10% of the patients diagnosed. Extracellular matrix abnormalities have been documented in gastric cancer patients. The aim of our study was to understand the role of high levels of hyaluronan, an extracellular matrix glycosaminoglycan, and its mechanistic role in gastric cancer pathobiology.

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Introduction: Galectins (Gal) were linked with inflammatory responses in the central nervous system, may play an important role in the pathogenesis of BD.In this study,we aimed to investigate whether serum Gal-1 and Gal-3 levels are related to BD.

Methods: 36 patients diagnosed with BD were included.

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Objectives: The study aimed to investigate the relationship between metastatic volume measurement, skeletal-related events, and survival in women diagnosed with breast cancer and bone metastases.

Patients And Methods: This retrospective study was conducted with 82 female breast cancer patients (mean age: 53±14.3 years; range, 23 to 87 years) diagnosed, treated, and followed up between January 2005 and December 2019.

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Aim: This study aims to investigate demographic data, survival rates, and the relationship of these rates with surgery in a large case series including multiple myeloma (MM) patients.

Method: MM cases were analyzed retrospectively using the latest version of the SEER database published in April 2020. This version covers January 1975 to December 2017.

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BACKGROUND This retrospective study aims to compare the efficacy of computed tomography-guided percutaneous excision and radiofrequency ablation in the treatment of osteoid osteoma. MATERIAL AND METHODS We evaluated 40 patients with osteoid osteoma who underwent either percutaneous excision or radiofrequency ablation between 2012 and 2015. The cohort consisted of 10 female and 30 male patients, with a mean age of 15.

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Article Synopsis
  • Periprosthetic joint infection (PJI) is a serious issue after joint surgery, leading to higher rates of illness and death, prompting research on prevention strategies.
  • A survey of 264 orthopedic surgeons evaluated their knowledge and attitudes towards PJI, finding no significant correlation between years of experience and their understanding of the infection.
  • While the surgeons displayed sufficient knowledge about PJI prevention and management, their attitudes did not always align with this knowledge, suggesting a need for further research to address these discrepancies.
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Article Synopsis
  • English is increasingly seen as the dominant language in science, leading to a rise in English-language publications (ELPs), while it's assumed that non-English publications are declining.
  • However, research shows that conservation articles in 12 out of 15 non-English languages have actually been increasing yearly at rates comparable to ELPs since the 1990s.
  • Significant discrepancies in article discovery exist depending on the search systems used, highlighting challenges like language barriers and the lack of English abstracts, making many non-English articles harder to find.
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Background: Synovial sarcoma (SyS) is a rare malignancy that is typically located on the limbs and occurs predominantly in adolescents. A study in a large population for SyS comparing subtypes has not yet been reported.

Methods: National Cancer Institute's Surveillance, Epidemiology, and End Results database was queried for patients diagnosed with SyS between January 1975 and December 2016.

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Objective: Adamantinomas are rare low-grade malignant bone tumors. This study aims to describe the demographic characteristics and survival rates of patients suffering from adamantinomas.

Methods: The National Institute of Cancer Surveillance, Epidemiology, and Recent Results (SEER) database was used, and patients diagnosed with adamantinoma between 1973 and 2016 were screened.

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Hyaluronan is a glycosaminoglycan, one of the chief components of the extracellular matrix. The aim of the present study is to investigate plasma hyaluronan levels among patients with acute myocardial infarction (AMI). This prospective study enrolled 56 consecutive patients with AMI who underwent percutaneous coronary intervention within 2 hours after admission.

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Rhabdomyosarcoma is the most common soft-tissue sarcoma in children and adolescents and accounts for 3% of all pediatric tumors. Subtypes include alveolar, spindle cell, embryonal, mixed-type, pleomorphic, and rhabdomyosarcoma with ganglionic differentiation. The National Cancer Institute's Surveillance, Epidemiology, and End Results (SEER) database was queried for patients diagnosed with any type of rhabdomyosarcoma between 1973 and 2014.

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Study Design: Cross-sectional study.

Objective: To investigate the role of ultrasonographic measurement of the diaphragm thickness on pulmonary function tests in patients with spinal cord injury (SCI).

Setting: Rehabilitation center in Ankara, Turkey.

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Pulmonary arterial hypertension (PAH) remains a disease with limited therapeutic options and dismal prognosis. Despite its etiologic heterogeneity, the underlying unifying pathophysiology is characterized by increased vascular tone and adverse remodeling of the pulmonary circulation. Myeloperoxidase (MPO), an enzyme abundantly expressed in neutrophils, has potent vasoconstrictive and profibrotic properties, thus qualifying as a potential contributor to this disease.

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Background: The operative reconstruction of a torn or insufficient anterior cruciate ligament has become a routine surgical procedure in orthopedics. The long-term success of an anterior cruciate ligament reconstruction depends on the ability of the graft to heal adequately in a bone tunnel. Investigators studying reconstructions described healing within a tunnel as osseous ingrowth and incorporation.

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Bats actively adjust the acoustic features of their sonar calls to control echo information specific to a given task and environment. A previous study investigated how bats adapted their echolocation behavior when tracking a moving target in the presence of a stationary distracter at different distances and angular offsets. The use of only one distracter, however, left open the possibility that a bat could reduce the interference of the distracter by turning its head.

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Hydatid cyst is one of the five most diagnosed zoonotic diseases in the Mediterranean region. However, intramuscular localisation is very rare. It is reported that muscular involvement constitutes 1-5.

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Aim: Anthracycline-derived antineoplastic agents are used as the main form of treatment in many malignant diseases, including breast cancer and childhood cancers. Cardiotoxicity is one of the most feared life-threatening complications of cancer therapy. In the present study, we aimed to investigate the relationship between plasma hyaluronan (HA) levels and anthracycline-induced cardiotoxicity.

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Altered bone morphogenic protein (BMP) signaling, independent of BMPR2 mutations, can result in idiopathic pulmonary arterial hypertension (IPAH). Glucose dysregulation can regulate multiple processes in IPAH. However, the role of glucose in BMP antagonist expression in IPAH has not been characterized.

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Humans explore static visual scenes by alternating rapid eye movements (saccades) with periods of slow and incessant eye drifts [1-3]. These drifts are commonly believed to be the consequence of physiological limits in maintaining steady gaze, resulting in Brownian-like trajectories [4-7], which are almost independent in the two eyes [8-10]. However, because of the technical difficulty of recording minute eye movements, most knowledge on ocular drift comes from artificial laboratory conditions, in which the head of the observer is strictly immobilized.

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Objective: The labrum and transverse acetabular ligament (TAL) are classically described as distinct anatomical structures with abundant mechanoreceptors and free nerve fibers. They deepen the joint and act as natural barriers against dislocation, thus providing additional stability. We hypothesized that severe coxarthrosis leads to elimination of labrum and TAL mechanoreceptors.

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Aim: For surgical treatment of unstable distal radius fractures, fixed-angled locking volar plate fixation is becoming popular nowadays because of some advantages over other surgical techniques. In this article, we discuss the fitting of fixed-angle locking volar plates to the distal radius in relation to the changes in the distal radial angles.

Materials And Methods: First, we took conventional radiography images of 18 dried radii and later we measured the palmar subchondral angle, dorsal subchondral angle, mid-subchondral angle, and palmar cortical angle using lateral radiography.

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Introduction: Epidermoid inclusion cysts are usually composed of epidermal elements implanted into the dermal layers. Patients are seen in the outpatient clinics with a mass. Most of the complaints are mechanical and cosmetic problems.

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Head and eye movements incessantly modulate the luminance signals impinging onto the retina during natural intersaccadic fixation. Yet, little is known about how these fixational movements influence the statistics of retinal stimulation. Here, we provide the first detailed characterization of the visual input to the human retina during normal head-free fixation.

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Background: Two main factors determine the strength of tendon repair; the tensile strength of material and the gripping capacity of a suture configuration. Different repair techniques and suture materials were developed to increase the strength of repairs but none of techniques and suture materials seem to provide enough tensile strength with safety margins for early active mobilization. In order to overcome this problem tendon suturing implants are being developed.

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Introduction: In the investigation of hip development in newborns and infants, ultrasonography and radiography are widely used, but their optimal roles in this setting remain controversial.

Case Report: Here we describe an 8.5-month-old infant who had undergone hip radiography at a primary care facility and was referred to our hospital to be evaluated for developmental dysplasia of the hip.

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