Availability and occurrence of coelenterazine in a Swedish fjord to maintain Amphiura filiformis bioluminescence.

The bioluminescent European brittle star Amphiura filiformis produces blue light at the arm-spine level thanks to a biochemical reaction involving coelenterazine as substrate and a Renilla-like luciferase as an enzyme. This echinoderm light production depends on a trophic acquisition of the coelenterazine substrate. Without an exogenous supply of coelenterazine, this species loses its luminous capabilities.

DCLRE1B as a novel prognostic biomarker associated with immune infiltration: a pancancer analysis.

The DNA cross-link repair 1B (DCLRE1B) gene is involved in repairing cross-links between DNA strands, including those associated with Hoyeraal-Hreidarsson syndrome and congenital dyskeratosis. However, its role in tumours is not well understood. DCLRE1B expression profiles were examined in tumour tissues and normal tissues using TCGA, GTEx, and TARGET datasets.

Augmented prediction of vertebral collapse after osteoporotic vertebral compression fractures through parameter-efficient fine-tuning of biomedical foundation models.

Vertebral collapse (VC) following osteoporotic vertebral compression fracture (OVCF) often requires aggressive treatment, necessitating an accurate prediction for early intervention. This study aimed to develop a predictive model leveraging deep neural networks to predict VC progression after OVCF using magnetic resonance imaging (MRI) and clinical data. Among 245 enrolled patients with acute OVCF, data from 200 patients were used for the development dataset, and data from 45 patients were used for the test dataset.

Neoadjuvant anti-PD1 immunotherapy for surgically accessible recurrent glioblastoma: clinical and molecular outcomes of a stage 2 single-arm expansion cohort.

Glioblastoma is immunologically "cold" and resistant to single-agent immune-checkpoint inhibitors (ICI). Our previous study of neoadjuvant pembrolizumab in surgically-accessible recurrent glioblastoma identified a molecular signature of response to ICI and suggested that neoadjuvant pembrolizumab may improve survival. To increase the power of this observation, we enrolled an additional 25 patients with a primary endpoint of evaluating the cell cycle gene signature associated with neoadjuvant pembrolizumab and performed bulk-RNA seq on resected tumor tissue (NCT02852655).

Electromyography findings in L5 radiculopathy are not associated with fatty infiltration of paraspinal muscles: a retrospective observational study.

Introduction: Increased fatty infiltration of the paraspinal muscles (PM) has been recognized as a sign of decreased muscle quality in patients with degenerative disc disease. However, whether fatty infiltration is a consequence of a neurogenic process due to spinal nerve root compression has not yet been determined.

Objective: To investigate the correlation between fatty infiltration of the paraspinal muscles (PM) and neurogenic remodeling of motor unit action potentials (MUAPs) in patients with lumbar radiculopathy.

Treatment of limb skin defect with self-made skin distractor.

Objective: To investigate the effect of self-made skin distractor in the treatment of limb skin defects.

Methods: From September 2018 to January 2020, 15 cases of limb skin defects (16 wounds) were treated with self-designed skin distractor, including 13 males and 2 females, with an average age of 42 years (range, 9-73 years). The smallest area of skin defect was 6 cm×3 cm, the largest was 32 cm ×7 cm, with an average of 72.

Analysis of risk factors for surgical site infection in spinal surgery patients and study of direct economic losses.

Background: Surgical site infection (SSI) is a serious complication of spine surgery, leading to prolonged hospital stays, re-operations, and economic losses. The aim of the study was to explore the types and quantities of pathogenic bacteria involved, the incidence of SSI, and to identify the independent risk factors and direct economic impact on patients with postoperative SSI in spine surgery.

Methods: The medical records of spine surgery patients from January 2023 to April 2024 at two hospitals in Xinjiang were retrospectively reviewed.

Discordance Between Spine-Hip and Paretic-Nonparetic Hip Bone Mineral Density in Hemiplegic Stroke Patients: A Multicenter Retrospective Study.

Objective: To identify the prevalence and factors associated with T-score discordance between the spine and hip, as well as between the paretic and non-paretic hips in hemiplegic stroke patients, this study investigated bone mineral density (BMD) patterns. Bone loss predominantly affects the paretic hip after a stroke, and typical clinical assessments using dual-energy X-ray absorptiometry (DXA) that scan the lumbar spine (LS) and a single hip may overlook an osteoporosis diagnosis. This oversight could potentially lead to suboptimal treatment for stroke patients.

Optimization of Existing RNA Visualization Methods Reveals Novel Dendritic mRNA Dynamics.

Background: Spatial-temporal control of mRNA translation in dendrites is important for synaptic plasticity. In response to pre-synaptic stimuli, local mRNA translation can be rapidly triggered near stimulated synapses to supply the necessary proteins for synapse maturation or elimination, and 3' untranslated regions (UTRs) are responsible for proper localization of mRNAs in dendrites. Although is a robust technique for analyzing RNA localization in fixed neurons, live-cell imaging of RNA dynamics remains challenging.

Carbon Fiber Reinforced Hybrid Polyaryl-Ether-Ether-Ketone (PEEK) Spinal Fixation System: Technical Features and Preliminary Clinical Trial.

Objective: To present the clinical result of spinal fixation system made entirely of Carbon-Fiber-Reinforced (CFR)-Hybrid Polyaryl-Ether-Ether-Ketone (PEEK).

Summary Of Background Data: Fusion surgery has been used to treat chronic low back pain caused by degenerative disk disease (DDD). The traditional pedicle screw system made of titanium, though biocompatible, can lead to complications, such as stress shielding and implant failure.

Malunion in a Self-stabilized Fracture of the Odontoid Process Type II with a Chronic Anterior Atlantoaxial Subluxation in a Neurologically Intact Patient: A Case Report.

Atalanto-occipital dislocations with type II fractures of the odontoid process are rare, reporting 7 cases for every 784 upper cervical spine injuries, an incidence of <0.3% and are related to a high rate of morbidity and mortality. Regarding C2 fractures, the most common are in the odontoid process, representing 7%, classified by Anderson and D'Alonso according to their level, with the highest rate of pseudarthrosis in zone II of up to 85% are caused mainly by car accidents.

Early therapeutic efficacy of condoliase chemonucleolysis for lumbar disc herniation.

Background: Low back pain is often caused by lumbar disc herniation (LDH). Treatment of LDH is possible using chemonucleolysis of the nucleus pulposus with condoliase injection. However, onset of the therapeutic effect varies among patients, with improvement from an early stage to 3 months post-injection.

Clozapine and rapamycin reverse behavioral abnormalities in an animal model of autoimmune schizophrenia.

Objective: Autoantibody-associated psychosis represents a distinct disease subgroup of patients with schizophrenia with a suspected autoimmune origin. Although preliminary studies have suggested adjunctive drug treatment strategies targeting the immune system, further validation of these findings is warranted. Autoantibodies against SFT2D2 have been identified in patients with schizophrenia.

Biomechanical analysis of scoliosis correction under the influence of muscular and external forces.

(1) Background: External force orthopedics and the strengthening of paraspinal muscles through exercise are common orthopedic methods for adolescent scoliosis, yet the synergetic mechanism of the two in orthopedic correction remains unclear. (2) Methods: A three-dimensional finite element model of the scoliotic spine was established to accurately simulate the mechanical properties of tissues such as the spine, intervertebral discs, and ribs. By applying external forces in different directions to the scoliosis model, the orthopedic effects of these forces on scoliosis were analyzed.

Neck extension with closed mouth position provides optimal airway patency after anterior cervical spine surgery at C3-4 and C4-5: a single-center retrospective case series.

Airway compromise due to prevertebral soft tissue swelling is a potentially devastating complication following anterior cervical discectomy and fusion (ACDF). However, there are no studies on the postoperative patient posture for enhancing airway patency after ACDF. This study aimed to analyze the effect of neck and mouth postures on airway patency following ACDF and to suggest the beneficial postoperative patient posture for improving airway patency.

Two-year radiological outcome of adult spinal deformity treated with lumbar pedicle subtraction osteotomy or posterior lumbar interbody fusion. A propensity score-matched analysis.

Study Design: Retrospective cohort study OBJECTIVES: The purpose of this study was to compare the 2-year radiological outcome and revision rates in patients with ASD treated with either PSO or PLIF, when PLIF was used to improve sagittal balance.

Methods: In 2016, PLIF was introduced at our institution as an alternative method when restoring lumbar lordosis. We analyzed two cohorts of patients with ASD undergoing either: PSO in 2010-2015 or PLIF in 2016-2020, retrospectively.

Predictors of return to work after multidisciplinary rehabilitation program for patients with chronic low back pain.

Introduction: Patients with chronic low back pain face functional, psychological, social and professional difficulties. Multidisciplinary Rehabilitation Programs (MRP) can be an effective treatment to help these patients to improve their condition and return to work.

Objective: To determine baseline predictors for return to work after an MRP for patients with chronic low back pain struggling to maintain their job.

Signaling in autism: Relevance to nutrients and sex.

Autism spectrum disorders (ASD) are substantially heterogeneous neuropsychiatric conditions with over a thousand associated genetic factors and various environmental influences, such as infection and nutrition. Additionally, males are four times more likely than females to be affected. This heterogeneity underscores the need to uncover common molecular features within ASD.

Repositioning the Posterior Septal Angle in Rhinoplasty: Methods and Outcomes.

Objective: Repositioning and fixation of the posterior septal angle (PSA) relative to the anterior nasal spine (ANS) is a well-known maneuver performed during rhinoplasty. Suture techniques through the periosteum along with transosseous drilling through the spine are the two most common fixation methods. We report on how nasal airway patency varies as a function of technique and patient demographic factors.

Individuals with Heterogenous Trabecular Bone Texture by Clinical MRI have Lower Bone Strength and Stiffness by QCT Based Finite Element Analysis.

Opportunistic screening is essential to improve the identification of individuals with osteoporosis. Our group has utilized image texture features to assess bone quality using clinical MRIs. We have previously demonstrated that greater heterogeneity of MRI texture related to history of fragility fractures, lower bone density, and worse microarchitecture.

Tranexamic acid in hip and spine surgery for children with cerebral palsy - a PRISMA-compliant scoping review.

Many children with cerebral palsy (CP) are frail and require major hip and/or spine surgeries associated with substantial blood loss. Tranexamic acid (TXA) is commonly used to reduce blood loss, but there is uncertainty around the optimal dose and timing of administration. There have been reviews in sub-populations and specific dosing regimens, but a broad overview of the available literature is lacking.

Comparing CT-like bone images based on FRACTURE MR with CT in pediatric congenital vertebral anomalies.

Background And Purpose: Congenital vertebral anomalies are commonly associated with underlying spinal cord anomaly which necessitates imaging both the spinal cord and the bony vertebral column to understand the extent of the deformity better. While MRI is the gold standard for spinal cord imaging, it does not provide CT-like bone details. Many MR bone imaging techniques have been tested in various adult spine conditions in the past decade but not much has been described on their reliability in pediatric spine.

Addressing the role of surgery in brain tumour trials: A report from the neurosurgery committee of the EORTC brain tumour group.

The Brain Tumor Group (BTG) of the European Organization for Research and Treatment of Cancer (EORTC) conducts academic clinical trials and translational research to improve clinical management of patients with primary and secondary brain tumors. The EORTC BTG has traditionally played an important role in providing evidence and thus advancing the field, albeit with a main focus on radiotherapy and pharmacotherapy in gliomas. Although examples of well-designed neuro-oncological surgical trials can be found, evidence in surgical neuro-oncology predominantly includes data from uncontrolled prospective series or retrospective cohorts.

Magnetic Resonance Imaging Prior Authorizations for Orthopaedic Care Are Negatively Affected by Medicaid Insurance Status.

Background: Magnetic resonance imaging (MRI) has revolutionized musculoskeletal care. However, its high costs and high utilization has prompted many insurance payors to require a prior authorization. This process remains burdensome and results in delays to patient care.

Bone density changes in young women in Uganda using tenofovir-based HIV pre-exposure prophylaxis and depot medroxyprogesterone acetate contraception.

Background: Injectable depot medroxyprogesterone acetate (DMPA) is the most common contraceptive choice among young women in Uganda, where HIV burden is high and HIV pre-exposure prophylaxis (PrEP) may be offered. For young women who choose to use both agents concurrently, it is unknown whether they will experience declines in BMD beyond those elicited by either product singly.

Methods: From 2018-2022, we conducted a 2-year prospective study with women ages 16-25 years in Kampala, Uganda desiring pregnancy and HIV prevention.