Publications by authors named "S A Sheriff"

Introduction: Severe acute symptomatic hypocalcemia, requiring emergency medical intervention, is a significant but poorly understood condition with high morbidity. In our setting, patients present to emergency rooms with painful carpo-pedal spasms that last for several hours, sometimes mimicking seizure disorders. Metabolomics and genetic profiling are innovative approaches that pinpoint molecular and genetic determinants of hypocalcemia risk which can be adopted to guide treatment in our population.

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Heat-shock protein 47 (HSP47) is a potential target for inhibitors that ameliorate fibrosis by reducing collagen assembly. In an effort to develop a structure-based drug-design system, it was not possible to replicate a previous literature result (PDB entry 4au4) for apo dog HSP47; instead, crystal forms were obtained in which pairs of dog HSP47 molecules interacted through a noncleavable C-terminal His-tag to build up tetramers, all of which had multiple molecules of HSP47 in the asymmetric unit and none of which diffracted as well as the literature precedent. To overcome these difficulties, a two-pronged approach was followed: (i) the His-tag was moved from the C-terminus to the N-terminus and was made cleavable, and (ii) Adnectin (derived from the tenth domain of human fibronectin type III) crystallization chaperones were developed.

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Objective: To evaluate characteristics of matched and unmatched general surgery residency (GSR) applicants.

Background: Given the recent change of the United States Medical Licensing Exam Step 1 grading to pass/fail, understanding the factors that influence GSR match success is integral to identifying potential interventions to improve match rates for diverse medical students.

Methods: Retrospective review of GSR National Residency Matching Program (NRMP) applicant and Accreditation Council for Graduate Medical Education (ACGME) active resident data between 2011 and 2022.

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Article Synopsis
  • Recurrence of high-grade gliomas is common even after the best treatment, and current imaging methods can't effectively predict when it will happen.
  • A new whole-brain magnetic resonance spectroscopy (WB-MRS) method was tested, focusing on tumor microenvironments to improve understanding of glioma progression and assist in treatment decisions.
  • By analyzing tumor metabolites and using machine learning techniques on data from 16 patients, researchers were able to predict glioma progression, particularly identifying key features that indicate future growth.
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Purpose: The pathological hallmarks of Alzheimer's disease (AD), amyloid, tau, and associated neurodegeneration, are present in the cortical gray matter (GM) years before symptom onset, and at significantly greater levels in carriers of the apolipoprotein E4 (APOE4) allele. Their respective biomarkers, A/T/N, have been found to correlate with aspects of brain biochemistry, measured with magnetic resonance spectroscopy (MRS), indicating a potential for MRS to augment the A/T/N framework for staging and prediction of AD. Unfortunately, the relationships between MRS and A/T/N biomarkers are unclear, largely due to a lack of studies examining them in the context of the spatial and temporal model of T/N progression.

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