Publications by authors named "Ercuement Ayva"

Article Synopsis
  • * A skin biopsy showed mild spongiosis and inflammation, confirming the diagnosis of PP.
  • * Treatment involved stopping the ketogenic diet and using oral doxycycline, which cleared the lesions within a month, although some post-inflammatory hyperpigmentation remained.
View Article and Find Full Text PDF
Article Synopsis
  • Protein biosensors have great potential, but their development usually involves a trial-and-error method, prompting the need for modular designs for better target recognition.
  • A new workflow was created that uses advanced selection techniques to produce stable binding domains for specific targets, integrated into a unique biosensor architecture.
  • Testing on liver toxicity markers showed the method consistently yielded over 10 different binders in a week, though binder affinity did not necessarily correlate with biosensor performance, highlighting the importance of design interactions.
View Article and Find Full Text PDF

Purpose: We aim to examine the long-term outcomes of patients who underwent multiparametric prostate magnetic resonance imaging (mp-MRI) for suspected prostate cancer (PCa), specifically based on their initial Prostate Imaging Reporting and Data System (PI-RADS) categories and various clinical factors. Our secondary aim is to evaluate the prognostic value of the PI-RADS through the National Comprehensive Cancer Network (NCCN) risk group distribution.

Methods: This research was conducted as a single-center retrospective cohort study in a tertiary care hospital.

View Article and Find Full Text PDF
Article Synopsis
  • The goal of synthetic biology and bionanotechnology is to create artificial allosteric protein switches to integrate with both biological and non-biological systems for processing information and energy.
  • Designing effective protein switches with specific performance metrics is challenging, but researchers have developed chimeric proteins that act as YES gate switches, achieving large dynamic ranges and quick response times.
  • The study also showcases the ability to reconfigure these YES gate switches into AND gate switches and assemble them into complex signaling networks, supporting advanced applications like drug biosensors and protein biomarkers.
View Article and Find Full Text PDF

Hypogammaglobulinemias, based on inborn errors of immunity, are primary immunodeficiencies (PIDs) that can also be diagnosed for the first time in adulthood. Common variable immunodeficiency (CVID) is a multifactorial disease often symptomatic due to antibody deficiency. In addition, some PIDs are classified into the category of immunodeficiencies with syndromic features due to their accompanying clinical findings unrelated to immunity.

View Article and Find Full Text PDF

Purpose: This study was aimed at investigating the effect of coronary artery bypass graft surgery conducted with different techniques on patients' anxiety, depression, mental and physical health.

Design And Methods: This cross-sectional study included 60 patients who completed the Beck Anxiety Inventory, the Beck Depression Inventory, and the 36-Item Short-Form Health Survey.

Findings: Anxiety, depression, and mental health showed significant differences in different time measurements, and combined effects of surgical technique and time factor.

View Article and Find Full Text PDF

Protein biosensors play an increasingly important role as reporters for research and clinical applications. Here we present an approach for the construction of fully integrated but modular electrochemical biosensors based on the principal component of glucose monitors PQQ-glucose dehydrogenase (PQQ-GDH). We designed allosterically regulated circular permutated variants of PQQ-GDH that show large (>10-fold) changes in enzymatic activity following intramolecular scaffolding of the newly generated N- and C termini by ligand binding domain/ligand complexes.

View Article and Find Full Text PDF

Cervical squamous cell carcinoma (SCC) is one of the common cancer types among women. MicroRNAs (miRNAs) are small non-coding RNAs that play an important role in the formation and development of many cancer types by regulating expression of their targets. While many studies have investigated the relationship between miRNAs and cervical cancer, no robust miRNA biomarkers have been defined yet for diagnosis of cervical lesions.

View Article and Find Full Text PDF

Objective: Atypical glandular cells (AGCs) in Pap (Papanicolaou) smears are uncommon but may represent various benign and malignant lesions. The aim of this study was to evaluate the AGC incidence in Pap smears, analyse the relationship between AGC and malignancy, and reveal the importance of architectural and nuclear features observed cytologically in malignancies.

Methods: Patients diagnosed with AGC on the basis of cervicovaginal cytology between May 2011 and July 2018 were included in this study.

View Article and Find Full Text PDF

Aim: This study aimed to compare the body temperature, normothermia, and extubation times of patients heated with forced air warming method based on whether they underwent on-pump or off-pump coronary artery bypass graft.

Method: This quasi-experimental study comprised 109 patients who underwent coronary artery bypass graft operation in the cardiovascular surgery department of a university hospital and a private hospital in Afyonkarahisar. Patients were divided into the following two groups: group 1 comprised 65 patients who underwent on-pump coronary artery bypass graft and group 2 comprised 44 patients who underwent off-pump coronary artery bypass graft.

View Article and Find Full Text PDF

Objective: To study incidental gallbladder cancer (IGBC) incidence in patients who underwent cholecystectomy.

Methods: The records of patients who underwent cholecystectomy between 2004-2019 were retrospectively reviewed. The demographic information, preoperative radiological findings of the patients diagnosed with gallbladder cancer (GBC), as a result of routine histopathological examination and operation records, were reviewed and findings were recorded.

View Article and Find Full Text PDF
Article Synopsis
  • - Echinococcal disease is common in eastern Mediterranean countries and can affect kidney transplants, as shown in a case involving a 38-year-old female who experienced elevated creatinine levels 7 months after a living-donor kidney transplant.
  • - A biopsy revealed echinococcal protoscolices in the transplanted kidney, with the absence of cysts indicating an early stage of the disease.
  • - The patient was successfully treated with albendazole for 3 months, leading to the complete resolution of echinococcal structures, normalization of creatinine levels, and improvement in proteinuria.
View Article and Find Full Text PDF

Objectives: The interaction between calcium oxalate deposition and urinary tract infection is not well established. We aimed to identify the association between these and to determine the role of calcium oxalate deposition on interstitial fibrosis development.

Materials And Methods: Renal allograft biopsies of 967 patients were reviewed to identify those with calcium oxalate deposition in the renal allograft, with 27 (2.

View Article and Find Full Text PDF

Objectives: Our objective was to analyze the incidence of pulmonary disorders in solid-organ transplant recipients and report on outcomes in these patients.

Materials And Methods: Seventy liver and kidney transplant patients, who underwent lung biopsy because of pulmonary symptoms between January 2000 and December 2015, were enrolled in the study. We examined and evaluated histopathologic findings of these patients based on clinical data recorded in patients' files.

View Article and Find Full Text PDF

Purpose: To investigate the role of CD44, cytokeratin 20 (CK20) and survivin for the detection and prognosis of patients with urothelial carcinoma of the bladder.

Materials And Methods: The study included 82 patients who underwent transurethral resection of bladder tumors between 2009 and 2014. The patient and tumor characteristics with relevance to age, tumor size and focality, grade and stage, recurrence and progression were noted.

View Article and Find Full Text PDF

Granular cell tumor (GCT) is a Schwann cell related benign neoplasm of soft tissue. GCT is an uncommon entity that occurs in a wide variety of body sites, but it is generally presented in the skin, oral cavity, superficial soft tissue, and respiratory and digestive tracts. Most of the GCTs are benign but clinically and radiologically these may mimic malignancy.

View Article and Find Full Text PDF

Objectives: Re-mediastinoscopy could be risky because of adhesions from the previous mediastinoscopy. The aim of this study was to evaluate the efficacy of a bio-resorbable barrier on adhesion formation in a re-mediastinoscopy rat model.

Methods: Mediastinal dissection similar to mediastinoscopy was done in twenty-eight rats and a polymeric film comprising of polylactic acid and polyethylene glycol (Repel-cv®, SyntheMed Inc.

View Article and Find Full Text PDF

Background: Autologous fat grafts are rich in adipose-derived stem cells, providing optimal soft-tissue replacement and significant quantities of angiogenic growth factor. Although fat grafts (FG) are used in several clinical conditions, the use of FG in urethral repairs and the effects of FG to urethral repairs have not yet been reported.

Objective: An experimental study was performed to evaluate the effect of FG on urethral angiogenesis and tissue growth factor (GF) levels.

View Article and Find Full Text PDF

Objectives: The purpose of this study was to investigate the frequency and prognostic importance of acute cellular rejection after heart transplant.

Materials And Methods: All 84 heart transplant patients at our center from January 1993 to January 2014, including all 576 endomyocardial biopsies, were evaluated with retrospective review of clinical records and endomyocardial biopsies. Routine and clinically indicated endomyocardial biopsies after heart transplant were graded for acute cellular rejection (2005 International Society for Heart and Lung Transplantation Working Formulation).

View Article and Find Full Text PDF

Objectives: Our aim was to review our single center experience regarding histopathologic features arising from enlarged lymph nodes following solidorgan transplant.

Materials And Methods: In 2148 people who had solid-organ transplant from 1985 to 2013, there were 34 patients (1.58%) who developed lymphadenopathy.

View Article and Find Full Text PDF

Background/aim: An experimental study was performed to evaluate the effect of extracorporeal shock wave lithotripsy (ESWL) on the distribution of interstitial cells of Cajal (ICC) in rabbit renal pelvis and proximal ureter.

Materials And Methods: Six New Zealand rabbits were included. Right kidneys were exposed to a total of 3000 shock waves (14 kV) by using an electrohydraulic-type ESWL device.

View Article and Find Full Text PDF

Background: Paget's disease (PD) is a rare form of intraepithelial adenocarcinoma that involves breast and extramammarian tissues. It is often associated with ductal carcinoma in situ and/or invasive ductal cancer. Molecular pathways that play a role in development of Paget's disease are stil unclear.

View Article and Find Full Text PDF

In this report we describe the upper gastrointestinal tractus involvement in a rare genetic disease of lipid metabolism. A 12-year-old boy presented with sore throat and fever. On physical examination, orange-yellow tonsils and adenoid tissue were noted.

View Article and Find Full Text PDF