Publications by authors named "Freiman T"

Background: Temporal lobe epilepsy (TLE) is the most common form of drug-resistant epilepsy, often associated with hippocampal sclerosis (HS), which involves selective neuronal loss in the Cornu Ammonis subregion 1 CA1 and CA4 regions of the hippocampus. Granule cells show migration and mossy fiber sprouting, though the mechanisms remain unclear. Microglia play a role in neurogenesis and synaptic modulation, suggesting they may contribute to epilepsy.

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Objective: Although the operating theatre offers unique didactic opportunities, it can be perceived as an uncomfortable environment by medical students due to the lack of theatre etiquette, time pressure and parallel work of different disciplines. We investigated whether virtual reality (VR) training can significantly reduce some of these fears and improve surgical education for medical students.

Methods: We randomly divided a group of 24 medical students and investigated the effects of a VR application (digitally recreated operating theatre tour) and compared it with currently-in-use written instructions for operational tasks in the operating theatre.

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Background: COVID-19 has attracted global attention primarily because of the severe acute respiratory symptoms associated with it. However, nearly one third of the patients also present with neurologic symptoms. This report describes a case of a previously healthy woman with acute COVID-19 infection, who developed acute facial nerve palsy and rapid progression to coma due to otogenic brain abscess.

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Return to work after spinal surgery is a crucial factor in the recovery process. It can contribute not only to physical rehabilitation but also to psychological well-being. This study aims to evaluate the rate of return to work following elective lumbar spine surgery and identify predictors that predict failure of return to work.

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Background: Seizure frequency and cognitive function are common parameters in assessing epilepsy surgery outcomes. However, psychobehavioral outcomes, such as symptoms of depression and quality of life (QOL), have not found equal attention yet.

Objective: To assess the effect of seizure frequency, the extent of resection, and cognitive function on the psychobehavioral outcome of patients after temporal lobe surgery for pharmacoresistant epilepsy.

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The COVID-19 (coronavirus disease) pandemic had a severe impact on public health worldwide. A rare but serious complication after administration of adenoviral vaccines against SARS-CoV-2 (AstraZeneca-Oxford and Johnson & Johnson) is vaccine-induced immune thrombotic thrombocytopenia and thrombosis (VITT), which can lead to serious complications such as cerebral venous sinus thrombosis (CVST). CVST itself can cause subarachnoid hemorrhage (SAH) and/or intracerebral hemorrhage (ICH), leading to high mortality due to herniation of brain parenchyma.

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He, we show that combined use of the EZH2 inhibitor GSK126 and the CDK4/6 inhibitor abemaciclib synergistically enhances antitumoral effects in preclinical GBM models. Dual blockade led to HIF1α upregulation and CalR translocation, accompanied by massive impairment of mitochondrial function. Basal oxygen consumption rate, ATP synthesis, and maximal mitochondrial respiration decreased, confirming disrupted endoplasmic reticulum-mitochondrial homeostasis.

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Article Synopsis
  • Recent research indicates that removing dead tissue (necrotic tissue) during surgery for ischemic cerebellar stroke may improve recovery more than just removing pressure (decompressive surgery) alone, but optimal procedures and outcomes related to the amount of tissue removed haven't been well-studied.* -
  • This study analyzed data from 91 patients who had surgery for ischemic cerebellar stroke, measuring the volume of infarcted tissue before and after operations, and evaluating functionality at 3 months post-surgery using a standardized ranking scale.* -
  • Results showed that patients who had necrosectomy (removal of necrotic tissue) were significantly more likely to achieve favorable recovery outcomes, with a specific threshold of
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Background: The differentiation of high-grade glioma and brain tumors of an extracranial origin is eminent for the decision on subsequent treatment regimens. While in high-grade glioma, a surgical resection of the tumor mass is a fundamental part of current standard regimens, in brain metastasis, the burden of the primary tumor must be considered. However, without a cancer history, the differentiation remains challenging in the imaging.

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Foramina parietalia permagna (FPP) is a rare anatomical defect that affects the parietal bones of the human skull. FPP is characterized by symmetric perforations on either side of the skull, which are caused by insufficient ossification during embryogenesis. These openings are typically abnormally large and can range from a few millimeters to several centimeters in diameter.

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Importance: According to the current American Heart Association/American Stroke Association guidelines, decompressive surgery is indicated in patients with cerebellar infarcts that demonstrate severe cerebellar swelling. However, there is no universal definition of swelling and/or infarct volume(s) available to support a decision for surgery.

Objective: To evaluate functional outcomes in surgically compared with conservatively managed patients with cerebellar infarcts.

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Background incidence of pyogenic spinal infections has increased in recent years. In addition to treating the spinal infection, optimal care also includes identifying the source of the pyogenic spinal infection and the presence of other infections. The aim of this study is to elucidate the prevalence of oral cavity infection (OCI) within this patient cohort.

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Purpose: Percutaneous 3-mm twist-drill trephination (TDT) under local anesthesia as a bedside operative technique is an alternative to the conventional open surgical trephination in the operating theatre. The aim of this study was to verify the efficacy and safety of this minimal invasive procedure.

Methods: This retrospective study comprises 1000 patients who were treated with TDT under local anesthesia at bedside due to chronic subdural hematoma (cSDH), intracerebral hemorrhage (ICH), and hydrocephalus (HYD) as a result of subarachnoid hemorrhage or non-hemorrhagic causes, increased intracranial pressure (IIP) in traumatic brain injury or non-traumatic brain edema, and other pathologies (OP) requiring drainage.

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Purpose: Chat generative pre-trained transformer (GPT) is a novel large pre-trained natural language processing software that can enable scientific writing amongst a litany of other features. Given this, there is a growing interest in exploring the use of ChatGPT models as a modality to facilitate/assist in the provision of clinical care.

Methods: We investigated the time taken for the composition of neurosurgical discharge summaries and operative reports at a major University hospital.

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Background: Temporal muscle thickness (TMT) on cranial CT scans has recently been identified as a prognostic imaging parameter for assessing a patient's baseline frailty. Here, we analyzed whether TMT correlates with Traumatic brain injury (TBI) severity and whether it can be used to predict outcome(s) after TBI.

Methods: We analyzed the radiological and clinical data sets of 193 patients with TBI who were admitted to our institution and correlated the radiological data with clinical outcomes after stratification for TMT.

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Objective: To assess transcranial sonography (TCS) as stand-alone tool and in combination with microelectrode recordings (MER) as a method for the postoperative localization of deep brain stimulation (DBS) electrodes in the subthalamic nucleus (STN).

Methods: Individual dorsal and ventral boundaries of STN (n = 12) were determined on intraoperative MER. Postoperatively, a standardized TCS protocol was applied to measure medio-lateral, anterior-posterior and rostro-caudal electrode position using visualized reference structures (midline, substantia nigra).

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Glioblastoma is the most common primary brain cancer in adults and represents one of the worst cancer diagnoses for patients. Suffering from a poor prognosis and limited treatment options, tumor recurrences are virtually inevitable. Additionally, treatment resistance is very common for this disease and worsens the prognosis.

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While comprising only 2% of all ischemic strokes, cerebellar strokes are responsible for substantial morbidity and mortality due to their subtle initial presentation and the morbidity of posterior fossa swelling. Furthermore, low temporal muscle thickness (TMT) has recently been identified as a prognostic imaging parameter to assess patient frailty and outcome. We analyzed radiological and clinical data sets of 282 patients with cerebellar ischemic stroke.

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Article Synopsis
  • - The study investigates the outcomes of two surgical techniques for patients with space-occupying cerebellar stroke (SOCS) and neurological decline, comparing suboccipital decompressive craniectomy (SDC) with suboccipital craniotomy and necrosectomy.
  • - Results showed that patients who had necrosectomy had a significantly better functional outcome at discharge and three months later compared to those who received SDC alone, with favorable outcomes at 65.3% versus 27.9% and 41.7% respectively.
  • - No notable differences in mortality or postoperative complications were found between the two surgical approaches, highlighting the need for further research through prospective randomized studies to validate these results.
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Objectives: Seizures and status epilepticus (SE) are frequent complications of acute subdural hematoma (aSDH) associated with increased morbidity and mortality. Therefore, we aimed to evaluate whether invasive subdural electroencephalogram recording leads to earlier seizure detection and treatment initiation in patients with aSDH.

Design: Prospective, single-center, cohort trial.

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Article Synopsis
  • A study aimed to create clinical scoring systems for patients with cerebellar stroke to predict mortality and outcomes, as no established scores existed before.
  • The research included 531 patients over a period of 13 years across multiple centers in Germany, utilizing logistic regression to identify significant independent predictors for 30-day mortality and unfavorable outcomes.
  • The developed scores highlighted age, Glasgow Coma Scale, stroke volume, and brain stem involvement as critical factors, with specific point assignments indicating varying levels of risk for mortality and negative outcomes within 30 days after the stroke.
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Purpose: The most frequent therapy of hydrocephalus is implantation of ventriculoperitoneal shunts for diverting cerebrospinal into the peritoneal cavity. We compared two adjustable valves, proGAV and proGAV 2.0, for complications resulting in revision surgery.

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There remains an urgent need for new therapies for treatment-resistant epilepsy. Sodium channel blockers are effective for seizure control in common forms of epilepsy, but loss of sodium channel function underlies some genetic forms of epilepsy. Approaches that provide bidirectional control of sodium channel expression are needed.

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: Air-pouch balloon-assisted probes have proven to be both simple and reliable tools for intracranial pressure (ICP) monitoring. However, we experienced reproducible falsely high ICP measurements when the ICP probe was inserted into the intracerebral hematoma cavity. Thus, the aim of the experimental and translational study was to analyze the influence of ICP probe placement with regard to measured ICP values.

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