Evaluation of photochemically cross-linked collagen/gold nanoparticle composites as potential skin tissue scaffolds.

Collagen type I is the main structural unit in skin tissue and is therefore used preferentially in skin tissue scaffolds. However, collagen-based 3D scaffolds have weak aqueous stability and degradation profiles in their uncross-linked states and chemical cross-linking reagents arise toxicity concerns, which generally restrict the spectrum of their biomedical applicability. Here, the research goal is to photochemically cross-link collagen type I with rose bengal (RB) when subjected to green laser light and to investigate the effect of silk sericin-capped gold nanoparticles (S-AuNP) when incorporated into scaffolds on the cross-linking process and thus on the scaffold properties.

Thickness and defect dependent electronic, optical and thermoelectric features of [Formula: see text].

Transition metal dichalcogenides (TMDs) receive significant attention due to their outstanding electronic and optical properties. In this study, we investigate the electronic, optical, and thermoelectric properties of single and few layer [Formula: see text] in detail utilizing first-principles methods based on the density functional theory (DFT). Within the scope of both PBE and HSE06 including spin orbit coupling (SOC), the simulations predict the electronic band gap values to decrease as the number of layers increases.

Classification of Hartmann's procedure reversal complications according to the Clavien-Dindo System.

Background: Hartmann's Procedure (HP) is performed for cancer, trauma or benign diseases of the left colon. It is regarded as a solution to avoid a risky anastomosis with the intent to reverse after the diseased colon is given time to recover. This reversal has been associated with a potential morbidity and mortality.

Is there a threshold for red cell distribution width to predict malignancy in breast masses?

Background: Red cell distribution width (RDW) has been shown to have predictive properties in different diseases as well as solid cancers.

Aim: We aimed to investigate the discriminative properties of RDW in benign and malignant breast lesions.

Subjects And Methods: In a retrospective cohort study the files of patients who underwent surgery for fibroadenomas (Group A) and breast cancer with axillary lymph node metastasis (Group B) were reviewed.

The anticancer activity of doxorubicin-loaded levan-functionalized gold nanoparticles synthesized by laser ablation.

Here, gold nanoparticles (AuNPs) were synthesized upon exposure to nano-pulsed Nd-YAG laser irradiation in de-ionized water (PLAL) and functionalized with levan polysaccharide for assessing the anticancer efficacy of doxorubicin (DOX)-conjugated levan-capped AuNPs complexes to MCF-7 breast cancer cells. According to the physicochemical test results, the increments in levan amount enhanced the colloidal stability and the drug encapsulation efficiency (DEE) significantly. For the 10L-AuNP group having the highest levan amount (10 mg/mL levan), DEE was calculated as 92.

Rat Model Investigation on the Role of Biomarkers in Hepatic Ischemia-Reperfusion Injury.

Objectives: Liver function is affected by ischemiareperfusion. Ischemia-reperfusion injury to the liver often follows hepatobiliary surgery. Here, we investigated biomarkers of liver ischemia-reperfusion injury using an animal model.

A Fast and Reliable Method to Interpret Short-Term Mortality in Perforated Peptic Ulcer: Red Cell Distribution Width is Sensitive and Specific.

Introduction: Peptic ulcer is an important health problem worldwide with a prevalence of around 5%. Peptic ulcer perforation is a potentially mortal complication of peptic ulcer disease. We aimed to investigate the potential use of red cell distribution width as a prognostic marker in peptic ulcer perforation.

A grey zone of hyperamylasemia following endoscopic retrograde cholangiopancreatography: follow-up and differential diagnosis from acute pancreatitis.

Introduction: Endoscopic retrograde cholangiopancreatography (ERCP) is a tool often used for treating and diagnosing pancreaticobiliary diseases. One of the important complications of ERCP is pancreatitis. Even though transient hyperamylasemia is a more common and benign situation, it must be distinguished from post-ERCP pancreatitis.

Ferromagnetic TMBC (TM = Cr, Mn) monolayers for spintronic devices with high Curie temperature.

Transition metal boro-carbide (TM2BC) structures crystallize in the layered orthorhombic structure in their bulk phases. In this study, however, we find that TM2BC (TM = Cr, Mn) prefer a tetragonal (t) crystal structure in their monolayer phases due to the occurrence of strong sp2 bonds between the metal and B/C atoms instead of sp3 + sp2 bonds which exist in the orthorhombic phase. The calculated energy difference between the orthorhombic and the tetragonal structures based on density functional theory (DFT) is more than 1 eV per unit cell.

Delayed Gastric Emptying as a Complication of Whipple's Procedure: Could it be Much Less Frequent than Anticipated? Could the Definition Be Revised? A Single Center Experience.

Objective: Whipple's procedure for periampullary tumors has significant risks and complications. Delayed gastric emptying has the highest rate. Although the International Study Group of Pancreatic Surgery defined (ISGPS) this entity, multiple definitions still exist among authors.

Red Cell Distribution Width as a Predictor of Malignancy in Patients Who Underwent Upper Gastrointestinal System Endoscopy.

Introduction: Red cell distribution width (RDW) has predictive properties in different benign and malignant diseases.

Aim: Our aim was to evaluate the predictive value of RDW for malignant gastric lesions by upper gastrointestinal screening.

Materials And Methods: Data of 91 male patients (Group A) who underwent upper gastrointestinal endoscopy and subsequent surgery for gastric malignancy and age-matched 91 healthy male patients (Group B) with benign disorders were reviewed in this retrospective cohort study.

Can we predict the risk of conversion in elective laparoscopic cholecystectomy?

Aim: Cholecystectomy is one of the most common operations. Laparoscopic cholecystectomy has become the golden standard. Yet, conversion to open cholecystectomy is necessary in some patients.

Preoperative appendix diameter obtained by computerized tomography scanning predicts conversion from laparoscopic to open appendectomy.

Background: Open appendectomy (OA) has been the gold standard for a long time. Laparoscopic appendectomy (LA) has gained wide acceptance and popularity, outdoing open approach. Yet, conversion may be required when laparoscopic approach fails.

Colloidal stability and biological activity evaluation of microbial exopolysaccharide levan-capped gold nanoparticles.

The main objectives of this study were to explore the suitability of the exopolysaccharide levan, biosynthesized by Bacillus subtilis, to aid in the formation of gold nanoparticles (AuNPs) and to investigate the colloidal stability and in vitro biological activity of this biopolymer-AuNPs complex. AuNPs (mainly spherical, 8-10 nm-sized, and monodispersed) were successfully synthesized in levan concentrations up to 0.5% w/v (L-AuNP0.

Tuning the electronic structure of RhX (X = Cl, Br, I) nonmagnetic monolayers: effects of charge-injection and external strain.

Atomistic exploration and electronic modification of 2D materials have been a central focus of research since the breakthrough of graphene. In the present study, we introduce and reveal the structure, stability and electronic features of novel RhX (X: Cl, Br, I) monolayer systems within the framework of density functional theory. Phonon dispersion spectra and equilibrium molecular dynamics calculations confirm the stability of the phases studied at room and elevated temperatures.

The discriminative properties of erythrocyte anisocytosis in patients with resectable malignant pancreatic masses compared with an age and gender matched control group.

Introduction: Red cell distribution width (RDW) is a parameter that reflects the heterogeneity in the size of the circulating erythrocytes. Elevated levels of RDW have been found related to various pathologic conditions including cancers. We hypothesized that elevated RDW levels might correspond to advanced stages of pancreatic cancer.

Investigation of firearm injury cases presented to training and research hospital's emergency service.

Background: Firearm injuries are criminal events that may cause severe morbidity and mortality and concerned with Emergency Medicine and Forensic Medicine. The present study aims to evaluate the wound characteristics of the cases who presented to emergency services due to firearm injuries.

Methods: In this study, 213 patients who were 18 years of age or older who applied to the Sağlık Bilimleri University Bozyaka Training and Research Hospital Emergency Service with gunshot injury were included.

Elevated serum bilirubin levels may predict perforation of the appendix.

Aim: Acute appendicitis is one of the most common pathology requiring emergency operations, and if perforated, can cause morbidity and mortality. The serum bilirubin levels were studied to see whether an elevation predicted perforation.

Material And Methods: In a retrospective cohort study the medical files of 221 patients who were operated for acute appendicitis were reviewed.

One-pot facile synthesis of silk sericin-capped gold nanoparticles by UVC radiation: Investigation of stability, biocompatibility, and antibacterial activity.

Herein, an easy one-pot synthesis method for gold nanoparticles (AuNPs), involving only gold salt and sericin extracted from silkworm cocoon in the presence of ultraviolet C (UVC) radiation, was developed. Nanoparticle formation was confirmed by characteristic surface plasmon resonance peaks at 520-540 nm wavelengths, and the influence of silk sericin on enhancing the colloidal stability of AuNPs was confirmed. Transmission electron microscopy examination showed the average size (<10 nm) and size distribution decreased significantly with higher sericin concentration.

Comparison of slit mesh versus nonslit mesh in laparoscopic extraperitoneal hernia repair.

Introduction: Endoscopic hernia repair integrates the advantages of tension-free preperitoneal mesh support of the groin with the advantages of minimally invasive surgery procedures.

Aim: To compare outcomes between slit mesh (SM) and nonslit mesh (NSM) placement in laparoscopic totally extraperitoneal (TEP) inguinal hernia repair.

Material And Methods: This is a retrospective study of 353 patients who underwent TEP inguinal hernia repair between January 2010 and December 2011.

Diffusion quantum Monte Carlo and density functional calculations of the structural stability of bilayer arsenene.

We have studied the structural stability of monolayer and bilayer arsenene (As) in the buckled (b) and washboard (w) phases with diffusion quantum Monte Carlo (DMC) and density functional theory (DFT) calculations. DMC yields cohesive energies of 2.826(2) eV/atom for monolayer b-As and 2.

Chemical and substitutional doping, and anti-site and vacancy formation in monolayer AlN and GaN.

We investigated the effects of chemical/substitutional doping, hydrogenation, and anti-site and vacancy defects on the atomic, optoelectronic and magnetic properties of AlN and GaN monolayers. Upon doping of selected atoms, AlN and GaN monolayers can acquire magnetic properties, and their fundamental band gaps are modified by the localized gap states. Spin-polarized gap states broaden into bands at patterned coverage of adatoms, whereby half-metallic or magnetic semiconducting properties can be attained.

Electronic and magnetic properties of monolayer α-RuCl: a first-principles and Monte Carlo study.

Recent experiments revealed that monolayer α-RuCl can be obtained by a chemical exfoliation method and exfoliation or restacking of nanosheets can manipulate the magnetic properties of the materials. In this paper, the electronic and magnetic properties of an α-RuCl monolayer are investigated by combining first-principles calculations and Monte Carlo simulations. From first-principles calculations, we found that the spin configuration of FM corresponds to the ground state for α-RuCl, however, the other excited zigzag oriented spin configuration has an energy of 5 meV per atom higher than the ground state.

The effects of transport by car on coagulation tests.

Background: This research investigated the effects of the transport of blood samples between centers/laboratories by car on coagulation tests.

Methods: Five tubes of blood samples were taken from 20 healthy volunteers. The samples consisted of a baseline (control) group, centrifuged and noncentrifuged transported samples; centrifuged and noncentrifuged untransported samples.

Surgical Management of Liver Hydatid Cyst Related Non-traumatic Emergencies: Single Center Experience.

Background: Vast majority of complaints and physical examination findings of hydatid disease are common in emergency room patients. Different emergency presentations of hydatid cyst disease and their treatment are evaluated. We studied preoperative laboratory findings of these patients to identify any parameters to predict hydatid cyst-biliary system communication.