Epigenetic-focused CRISPR/Cas9 screen identifies (absent, small, or homeotic)2-like protein (ASH2L) as a regulator of glioblastoma cell survival.

Background: Glioblastoma is the most common and aggressive primary brain tumor with extremely poor prognosis, highlighting an urgent need for developing novel treatment options. Identifying epigenetic vulnerabilities of cancer cells can provide excellent therapeutic intervention points for various types of cancers.

Method: In this study, we investigated epigenetic regulators of glioblastoma cell survival through CRISPR/Cas9 based genetic ablation screens using a customized sgRNA library EpiDoKOL, which targets critical functional domains of chromatin modifiers.

The Effect of Lavandula stoechas on Wound Healing in an Experimental Diabetes Model.

Introduction: Diabetic foot is a consequential and dangerous complication of diabetes, contributing to decreased quality of life, escalated hospitalizations, and increased mortality rates. Using an experimental model of diabetes, this study aims to investigate the effect of Lavandula stoechas on wound healing.

Methods: A total of 35 albino Wistar rats, 250-350 grams in weight, were used.

Evaluation of versatility and outcomes of the first dorsal metacarpal artery flap in thumb defects.

Background: It is clinically vital to determine the best technique to reconstruct thumb defects with satisfactory esthetic and functional outcomes. We aimed to quantitatively present the safety, versatility, limitations, advantages, and functional results of the first dorsal metacarpal artery flap (FDMAF) and evaluate its outcomes in thumb defect reconstruction by comparing it with the other current surgical options.

Methods: A total of 21 patients underwent thumb defect reconstruction.

EPIKOL, a chromatin-focused CRISPR/Cas9-based screening platform, to identify cancer-specific epigenetic vulnerabilities.

Dysregulation of the epigenome due to alterations in chromatin modifier proteins commonly contribute to malignant transformation. To interrogate the roles of epigenetic modifiers in cancer cells, we generated an epigenome-wide CRISPR-Cas9 knockout library (EPIKOL) that targets a wide-range of epigenetic modifiers and their cofactors. We conducted eight screens in two different cancer types and showed that EPIKOL performs with high efficiency in terms of sgRNA distribution and depletion of essential genes.

First case report of Pacinian corpuscle hyperplasia following complex regional pain syndrome.

Pacinian disorders are exceedingly rare, and the exact pathogenesis is still unknown. The most common symptoms are pain, sensory changes, and a visible or palpable mass, and diagnosis is usually made by pathological examination after the excision of the painful nodule. In this case report, we present the case of a 49-year-old male with Pacinian corpuscle hyperplasia located on the metacarpophalangeal joint, emerging at the same hand of the patient two years after the treatment due to complex regional pain syndrome (CRPS).

Gout tophus in transferred tendons after 33 years: A case report.

Surgical site gout is an extremely rare complication that is difficult to diagnose, particularly in patients without a history of gout. A 57-year-old male patient was admitted with no previous history of gout, complaining of surgical site gout located at the junction where flexor carpi ulnaris tendon was transferred to extensor digitorum communis tendon after 33 years of the initial surgery. The patient was presented with a progressive swelling over the last three months which was located on the dorsoulnar side of the right wrist joint.

Aneurysmal Bone Cyst of Pisiform Bone: Diagnosis and Treatment of a Rare Entity: Case Report and a Review of the Literature.

Aneurysmal bone cyst (ABC) is a benign expansile bone tumor without metastasis capability. Only 3-4% of ABCs occur in the hand and they mainly take place in metaphysis' of long bones like metacarpals or phalanges. Carpal ABCs have been reported as individual case reports in the literature due to rarity.

A supportive donor nerve for long-term facial paralysis: Anatomical analysis of the posterior auricular nerve and micro-anatomical comparison with zygomatic nerve.

Background: The posterior auricular nerve (PAN) is an inspiring candidate for the additional axonal source in long-term facial paralysis to improve the functional results of the cross-facial nerve (FN) graft technique. However, no studies have analyzed the PAN's axonal load and its microscopic anatomy to assess its utilization in facial reanimation. The present study aims to examine the anatomical and microscopic features of the PAN to analyze its feasibility as a donor nerve.

IS BODY MASS INDEX AND OBESITY SURGERY MORTALITY SCORE IMPORTANT IN PERIOPERATIVE COMPLICATIONS OF LAPAROSCOPIC SLEEVE GASTRECTOMY BEFORE DISCHARGE?

Background: Morbid obesity surgery and related complications have increased with time.

Aim: To evaluate the relationship between perioperative complications before discharge and preoperative body mass index and obesity surgery mortality score in laparoscopic sleeve gastrectomy.

Method: 1617 patients who met the inclusion criteria were evaluated retrospectively.

A Diagnostic Dilemma for Acute Abdomen: Sclerosing Encapsulating Peritonitis (Abdominal Cocoon Syndrome); A Retrospective Cohort Study.

Background: Sclerosing encapsulating peritonitis (SEP) is a rare cause of acute abdomen and can be easily misdiagnosed. Preoperative diagnosis of the SEP can be performed with preoperative imaging studies. We aimed to evaluate the clinical features of ileus cases who were diagnosed with primary or secondary SEP in the last five years.

Comparative assessment of fingertip replantation in paediatric and adult patients within a single institution.

The purpose of this retrospective study was to compare the outcomes of paediatric and adult fingertip replantation within a single institution. Our retrospective study found no significant difference in the survival rate between the paediatric (10/12) and adult (22/26) groups. At 6 months follow-up, there was no significant difference in sensory recovery between both groups, as measured with Semmes-Weinstein testing, but a significant difference in mean static two-point discrimination testing values between the paediatric (4.

The effects of sponges soaked with chlorhexidine gluconate and metronidazole on safety of colonic anastomosis in an experimental model of peritonitis.

Background: The present study aims to evaluate the use of the chlorhexidine gluconate and metronidazole impregnated compresses concerning anastomosis safety in the left colonic anastomosis in the presence of peritonitis.

Methods: This study was conducted on 21 Wistar-Albino-rats divided into three equal groups. After median laparotomy, the whole layer of the left colon was cut 2 cm over the pelvic peritoneum.

Papillary intralymphatic angioendothelioma: An extremely rare tumor.

Papillary intralymphatic angioendothelioma (PILA), an intralymphatic lesion of vascular ducts, is an extremely rare tumor. It is generally encountered as an unexpected pathology following excision of a vascular skin lesion. Re-excision is the commonly preferred treatment option once the pathological diagnosis is established.

Drug Repositioning Screen on a New Primary Cell Line Identifies Potent Therapeutics for Glioblastoma.

Glioblastoma is a malignant brain cancer with limited treatment options and high mortality rate. While established glioblastoma cell line models provide valuable information, they ultimately lose most primary characteristics of tumors under long-term serum culture conditions. Therefore, established cell lines do not necessarily recapitulate genetic and morphological characteristics of real tumors.

A micropillar-based microfluidic viscometer for Newtonian and non-Newtonian fluids.

In this study, a novel viscosity measurement technique based on measuring the deflection of flexible (poly) dimethylsiloxane (PDMS) micropillars is presented. The experimental results show a nonlinear relationship between fluid viscosity and the deflection of micropillars due to viscoelastic properties of PDMS. A calibration curve, demonstrating this nonlinear relationship, is generated, and used to determine the viscosity of an unknown fluid.

Oberg-Manske-Tonkin Classification of Congenital Upper Extremity Anomalies: The First Report From Turkey.

Purpose: Although the Oberg-Manske-Tonkin (OMT) classification has been recommended by the International Federation of Societies for Surgery of the Hand owing to some insufficiencies of the Swanson classification system, it has not achieved a universal adoption by hand surgeons. In this study, we hypothesize that the OMT classification can be used easily to classify congenital upper extremity anomalies. We also aim to make epidemiological analysis of congenital upper extremity anomalies with the OMT classification and to compare the applicability of the OMT and the Swanson classifications.

From Experiments to Simulation: Shear-Induced Responses of Red Blood Cells to Different Oxygen Saturation Levels.

Red blood cells (RBC) carry and deliver oxygen (O) to peripheral tissues through different microcirculatory regions where they are exposed to various levels of shear stress (SS). O affinity of hemoglobin (Hb) decreases as the blood enters the microcirculation. This phenomenon determines Hb interactions with RBC membrane proteins that can further regulate the structure of cytoskeleton and affect the mechanical properties of cells.

Effect of splenic flexure mobilization performed via medial-to-lateral and superior-to-inferior approach on early clinical outcomes in elective laparoscopic resection of rectal cancer.

Introduction: Whether complete splenic flexure mobilization (SFM) is required remains a controversial issue and there are numerous approaches regarding the performance of this procedure.

Aim: To investigate the effect of SFM performed with a medial-to-lateral and superior-to-inferior approach on early clinical outcomes in laparoscopic resection of rectal cancer.

Material And Methods: The SFM procedure was initiated by the ligation of the inferior mesenteric vein followed by dissection extending from the upper border of the pancreas to the splenic hilum through the gastrocolic space.

Nesprin-1 impact on tumorigenic cell phenotypes.

The largest protein of the nuclear envelope (NE) is Nesprin-1 which forms a network along the NE interacting with actin, Emerin, Lamin, and SUN proteins. Mutations in the SYNE1 gene and reduction in Nesprin-1 protein levels have been reported to correlate with several age related diseases and cancer. In the present study, we tested whether Nesprin-1 overexpression can reverse the malignant phenotype of Huh7 cells, a human liver cancer cell line, which carries a mutation in the SYNE1 gene resulting in reduced Nesprin-1 protein levels, has altered nuclear shape, altered amounts and localization of NE components, centrosome localization and genome stability.

Differential effects of adenylyl cyclase-protein kinase A cascade on shear-induced changes of sickle cell deformability.

Background: Erythrocyte deformability is impaired in sickle cell disease (SCD). The regulation of cytoskeletal protein organization plays a key role in erythrocyte deformability. The activation of adenylyl cyclase (AC)/cAMP/Protein kinase A (PKA) signaling pathway was associated with increased deformability in healthy erythrocytes, however the role of this pathway in SCD is unknown.

Endoscopic retrieval of retracted flexor tendons: An atraumatic technique.

Background: The repair of retracted flexor tendons is a challenging problem for hand surgeons. The tendon stump should be handled in an atraumatic manner because any microtrauma to the sheath and tendon can lead to poor functional outcomes.

Methods: Twenty-three patients with flexor zone 2 injuries and intraoperative finding of retracted tendons were randomly divided into two groups: endoscopic retrieval group and proximal incision group.

Comparison of Musculocutaneous and Fasciocutaneous Free Flaps for the Reconstruction of the Extensive Composite Scalp and Cranium Defects.

Composite scalp and cranium defects, which require microsurgical reconstruction, result from tumor resection, radiation, trauma, severe burn injuries, and rarely vasculitic disorders. In the current study, the authors aim to compare the outcomes of the fasciocutaneous flaps and musculocutaneous free flaps used for the reconstruction of extensive composite scalp and cranium defects. From 2010 to 2017, 21 patients who underwent composite scalp and cranium defect reconstruction with a free flap were retrospectively identified.