Publications by authors named "Cohen Mark"

Creutzfeldt-Jakob disease (CJD) is a rare, fatal, rapidly progressive neurodegenerative disease resulting from an accumulation of misfolded prion proteins (PrP). CJD affects 1-2 new individuals per million each year, and the sporadic type accounts for 90% of those cases. Though the median age at onset and disease duration vary depending on the subtype of sporadic CJD (sCJD), the disease typically affects middle-aged to elderly individuals with a median survival of 4-6 months.

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Purpose: This review summarizes the current use of extended reality (XR) including virtual reality (VR), mixed reality, and augmented reality (AR) in the medical field, ranging from medical imaging to training to preoperative planning. It covers the integration of these technologies into clinical practice and within medical training while discussing the challenges and future opportunities in this sphere. This will hopefully encourage more physicians to collaborate on integrating medicine and technology.

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Article Synopsis
  • Variably Protease Sensitive Prionopathy (VPSPr) is a rare, fatal human prion disease that differs from other prion diseases like Creutzfeldt-Jakob disease (CJD), particularly in the sensitivity of its prion proteins to digestion by proteinase.
  • The disease is characterized by distinctive protein fragments (23, 17, and 7 kDa) that arise after digestion, especially notable in cases with the codon 129 VV genotype, where a unique 7 kDa fragment can be harder to identify with traditional methods.
  • Researchers have found that using capillary electrophoresis (CE) offers a more sensitive and reproducible approach for detecting and analyzing these prion proteins, allowing for
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Background: Long COVID is a heterogeneous clinical syndrome characterised by a variety of reported symptoms and signs. Its clinical management is expected to differ significantly worldwide.

Methods: A survey-based study investigating long COVID-related standard operating procedures (SOPs) has been conducted by the European Respiratory Society (ERS) END-COVID clinical research collaboration with the support of other international societies (ALAT, APSR, CHEST, ESCMID and PATS).

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Background: Recent multigenomic analysis of adrenocortical carcinomas (ACCs) identified SLC7A11/xCT as a novel biomarker. The Food and Drug Administration-approved anti-inflammatory drug, sulfasalazine (SAS), induces ferroptosis by blocking SLC7A11 expression. We hypothesize that SAS could be repurposed to target ACC cells.

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  • * Findings showed that total mercury (THg) levels exceeded the WHO guideline for safe drinking water, particularly during the rainy season, with concentrations ranging from 3.4 to 96.3 µg/L compared to 0.84 to 2.12 µg/L in the dry season.
  • * The researchers emphasized the need for immediate action to protect human and animal health in mining communities, and recommended further studies on mercury distribution and impacts based on various environmental factors.
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We report a case of corneal epithelial hyperplasia associated with chronic eye rubbing mimicking keratoconus. A 32-year-old man was presented with a 3-year history of suboptimal vision and astigmatism in his left eye. His history was significant for chronic left eye rubbing.

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: This study aims to identify the most accurate regression model for predicting total corneal astigmatism (TCA) from anterior corneal astigmatism (ACA) and to fine-tune the best model's architecture to further optimize predictive accuracy. : A retrospective review of 19,468 eyes screened for refractive surgery was conducted using electronic medical records. Corneal topography data were acquired using the Pentacam HR.

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Objective: To determine the extent to which within-hospital temporal clustering of postoperative complications is observed in the American College of Surgeons, National Surgical Quality Improvement Program (ACS-NSQIP).

Background: ACS-NSQIP relies on periodic and on-demand reports for quality benchmarking. However, if rapid increases in postoperative complication rates (clusters) are common, other reporting methods might be valuable additions to the program.

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  • A study investigated the ability of patients aged 80 and older to return home after surgery, focusing on those unable to do so by 30 days post-operation (POD-30).
  • About 19.8% of the 4,946 patients lived in non-home facilities at POD-30, with significant risk factors including a history of falls and postoperative complications like pressure ulcers.
  • The findings suggest that assessing geriatric-specific risk factors prior to surgery is crucial for improving patient outcomes and guiding surgical decisions.
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Background: Upper extremity peripheral neuropathy is a known, but uncommon complication that can occur after shoulder surgery. The incidence rate is well documented, and most of these cases historically have been treated conservatively. However, we hypothesize peripheral compression neuropathy requires a much higher need for surgical decompression than originally reported.

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High-grade glioma (HGG) is an aggressive brain tumor. Sex is an important factor that differentially affects survival outcomes in HGG. We used an end-to-end deep learning approach on hematoxylin and eosin (H&E) scans to (i) identify sex-specific histopathological attributes of the tumor microenvironment (TME), and (ii) create sex-specific risk profiles to prognosticate overall survival.

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Heat Shock Protein 90 (Hsp90) is responsible for the proper folding and maturation of ~400 client protein substrates, many of which are directly associated with the ten hallmarks of cancer. Hsp90 is a great target for cancer therapy including melanoma, since Hsp90 inhibition can disrupt multiple oncogenic pathways simultaneously. In this study, we report the synthesis and anti-proliferative activity manifested by a series of Hsp90 C-terminal inhibitors against mutant BRAF and wild-type BRAF melanoma cells.

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Background: Lateral epicondylitis is a common cause of elbow pain that is generally self-limiting. For patients who have persistent symptoms refractory to conservative treatment, there is still no clear consensus on the most favorable treatment modality. The purpose of this systematic review was to synthesize the available literature regarding both nonoperative and operative treatment modalities for recalcitrant lateral epicondylitis (RLE) to provide insight into the efficacy of treatment options.

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Creutzfeldt-Jakob Disease (CJD), the most common human prion disease, is associated with pathologic misfolding of the prion protein (PrP), encoded by the PRNP gene. Of human prion disease cases, < 1% were transmitted by misfolded PrP, ~ 15% are inherited, and ~ 85% are sporadic (sCJD). While familial cases are inherited through germline mutations in PRNP, the cause of sCJD is unknown.

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Creutzfeldt-Jakob Disease (CJD), the most common human prion disease, is associated with pathologic misfolding of the prion protein (PrP), encoded by the gene. Of human prion disease cases, ~1% were transmitted by misfolded PrP, ~15% are inherited, and ~85% are sporadic (sCJD). While familial cases are inherited through germline mutations in , the cause of sCJD is unknown.

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Background: The incidence of a second de novo pancreatic ductal adenocarcinoma (PDAC) among patients with prior cancer has been reported to be 6%. however, as survival increases through improvements in systemic therapy, this incidence of a de novo PDAC after prior PDAC may become more prevalent. In this context, a structured and stepwise approach to a total pancreatectomy for a second de novo PDAC after a prior PDAC treated with a pancreaticoduodenectomy is detailed.

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Background: The lack of consensus on equity measurement and its incorporation into quality-assessment programs at the hospital and system levels may be a barrier to addressing disparities in surgical care. This study aimed to identify population-level and within-hospital differences in the quality of surgical care provision.

Study Design: The analysis included 657 NSQIP participating hospitals with more than 4 million patients (2014 to 2018).

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  • OpenAI's ChatGPT was used to generate innovative ideas for rhinoplasty-related patents, showing its potential application in aesthetic surgery.
  • A total of 40 patents were created by ChatGPT and compared with 42 existing patents, revealing that detailed prompts led to more relevant innovations, particularly in postoperative tools and surgical planning.
  • The study concludes that while ChatGPT shows promise in generating surgical innovations, collaboration with experienced surgeons is essential for translating these ideas into practical applications, and future AI improvements will enhance this process.
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  • * The development of these inhibitors has been challenged by the absence of co-crystal structures, leading researchers to conduct structure-activity relationship (SAR) studies for optimization.
  • * Recent research involves noviose sugar surrogates (noviomimetics) to explore the binding pocket of the C-terminal domain, showcasing the synthesis and anti-proliferative effects of a new series of Hsp90 C-terminal inhibitors.
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Definitive diagnosis of sporadic Creutzfeldt-Jakob disease (sCJD) relies on the examination of brain tissues for the pathological prion protein (PrP). Our previous study revealed that PrP-seeding activity (PrP-SA) is detectable in skin of sCJD patients by an ultrasensitive PrP seed amplification assay (PrP-SAA) known as real-time quaking-induced conversion (RT-QuIC). A total of 875 skin samples were collected from 2 cohorts (1 and 2) at autopsy from 2-3 body areas of 339 cases with neuropathologically confirmed prion diseases and non-sCJD controls.

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Introduction: Recent data suggest that distinct prion-like amyloid beta and tau strains are associated with rapidly progressive Alzheimer's disease (rpAD). The role of genetic factors in rpAD is largely unknown.

Methods: Previously known AD risk loci were examined in rpAD cases.

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Objective: To compare the performance of the ACS NSQIP "universal" risk calculator (N-RC) to operation-specific RCs.

Background: Resources have been directed toward building operation-specific RCs because of an implicit belief that they would provide more accurate risk estimates than the N-RC. However, operation-specific calculators may not provide sufficient improvements in accuracy to justify the costs in development, maintenance, and access.

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Background: To characterize anterior corneal higher-order aberration (HOA) excimer ablation map patterns in postoperative LASIK ectasia (POE) and to examine correlations between newly identified corneal HOA ablation map features of POE and known topographic indices.

Methods: Prospective multicenter non-interventional descriptive study. A total of 28 eyes from 22 POE patients were enrolled.

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