Publications by authors named "Shaffer S"

BRCA1 promotes DNA repair through interactions with multiple proteins, including CtIP and FANCJ (also known as BRIP1/BACH1). While CtIP facilitates DNA end resection when de-acetylated, the function of FANCJ in repair processing is less well defined. Here, we report that FANCJ is also acetylated.

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We report on a quality improvement project whose purpose was to systematically review behavioral pain assessment tools for children who are cognitively impaired, with the goal of identifying a valid and reliable tool for clinical practice. In addition, we sought to partner with parents and/or caregivers to expand their role in pain assessment. The project team conducted an extensive synthesis of the literature to examine the availability and quality of published pain assessment tools for use with children with cognitive impairment (CI) or developmental disability.

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Maintenance of membrane function is essential and regulated at the genomic, transcriptional, and translational levels. Bacterial pathogens have a variety of mechanisms to adapt their membrane in response to transmission between environment, vector, and human host. Using a well-characterized model of lipid A diversification (Francisella), we demonstrate temperature-regulated membrane remodeling directed by multiple alleles of the lipid A-modifying N-acyltransferase enzyme, LpxD.

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Study Design: Reliability study.

Objectives: To determine intrarater test-retest and interrater reliability of the Functional Movement Screen (FMS) among novice raters.

Background: The FMS is used by various examiners to assess movement and predict time-loss injuries in diverse populations (eg, youth to professional athletes, firefighters, military service members) of active participants.

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Cell migration is an indispensable aspect of tissue patterning during embryonic development. Oligodendrocytes, the myelinating cells of the central nervous system, migrate significantly during development of the brain. Several growth factors have been identified as being critical regulators of oligodendrocyte progenitor migration, including platelet derived growth factor-A (PDGFA), and fibroblast growth factor-2 (FGF2).

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Pain assessment in children with cognitive impairment (CI) is challenging. A quality improvement (QI) project involving evidence-based review of pain assessment tools, feedback from the Family Advisory Council, trialing of selected tools within clinical settings including obtaining feedback from nurses, and parents caring for nonverbal children with developmental delay was reported. Synthesized evidence supported the adoption of revised Faces, Legs, Activity, Cry, and Consolability pain assessment tool into clinical practice.

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For most patients with type I diabetes, insulin therapy and glucose monitoring are sufficient to maintain glycemic control. However, hypoglycemia is a potentially lethal side effect of insulin treatment in patients who are glycemically labile or have hypoglycemia-associated autonomic failure [1]. For those patients, an alternative therapy is beta cell replacement via pancreas or islet transplantation.

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Very long-chain acyl-coA dehydrogenase (VLCAD) is the rate-limiting step in mitochondrial fatty acid oxidation. VLCAD-deficient mice and patients clinical symptoms stem from not only an energy deficiency but also long-chain metabolite accumulations. VLCAD-deficient mice were treated systemically with 1 × 10(12) vector genomes of recombinant adeno-associated virus 9 (rAAV9)-VLCAD.

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Networks of co-regulated transcripts in genetically diverse populations have been studied extensively, but little is known about the degree to which these networks cause similar co-variation at the protein level. We quantified 354 proteins in a genetically diverse population of yeast segregants, which allowed for the first time construction of a coherent protein co-variation matrix. We identified tightly co-regulated groups of 36 and 93 proteins that were made up predominantly of genes involved in ribosome biogenesis and amino acid metabolism, respectively.

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Introduction: Measures of endurance, flexibility, strength, and power may be of value in predicting injury risk, but application to the military setting has been limited. The purpose of this study was to assess the reliability and precision of lower quarter physical performance measures among novice raters.

Methods: Sixty-four (53 male, 11 female) healthy active duty Soldiers (aged 25.

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Pelagic marine predators face unprecedented challenges and uncertain futures. Overexploitation and climate variability impact the abundance and distribution of top predators in ocean ecosystems. Improved understanding of ecological patterns, evolutionary constraints and ecosystem function is critical for preventing extinctions, loss of biodiversity and disruption of ecosystem services.

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Pelagic seabirds are highly mobile, reducing the likelihood of allopatric speciation where disruption of gene flow between populations is caused by physically insurmountable, extrinsic barriers. Spatial segregation during the non-breeding season appears to provide an intrinsic barrier to gene flow among seabird populations that otherwise occupy nearby or overlapping regions during breeding, but how this is achieved remains unclear. Here we show that the two genetically distinct populations of Cook's petrel (Pterodroma cookii) exhibit transequatorial separation of non-breeding ranges at contemporary (ca.

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All-trans-retinoic acid (atRA) is the active metabolite of vitamin A. atRA is also used as a drug, and synthetic atRA analogs and inhibitors of retinoic acid (RA) metabolism have been developed. The hepatic clearance of atRA is mediated primarily by CYP26A1, but design of CYP26A1 inhibitors is hindered by lack of information on CYP26A1 structure and structure-activity relationships of its ligands.

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Infusion-based electrospray ionization (ESI) coupled to multiple-stage tandem mass spectrometry (MS(n)) is a standard methodology for investigating lipid A structural diversity (Shaffer et al. J. Am.

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Fisheries bycatch is a recognized threat to marine megafauna. Addressing bycatch of pelagic species however is challenging owing to the dynamic nature of marine environments and vagility of these organisms. In order to assess the potential for species to overlap with fisheries, we propose applying dynamic habitat models to determine relative probabilities of species occurrence for specific oceanographic conditions.

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Purpose: Dentists and dental hygienists have been reported as having a high prevalence of upper-extremity musculoskeletal disorders, including carpal tunnel syndrome. Unfortunately, previous research has not involved the impact of preventive dental specialist training on dental assistants. Therefore, the purpose of this study was to determine the presence of median and ulnar neuropathies in US Army dental assistants before and after training as preventive dental specialists.

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Data-dependent precursor ion selection is widely used in shotgun proteomics to profile the protein components of complex samples. Although very popular, this bottom-up method presents major drawbacks in terms of detectable dynamic range. Recently, we demonstrated the superior performance of a data-independent method we termed precursor acquisition independent from ion count (PAcIFIC).

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The Halobacterium salinarum gas vesicle (GV) is an extremely stable intracellular organelle with air trapped inside a proteinaceous membrane. Reported here is a comparative proteomics analysis of GV and GV depleted lysate (GVD) to reveal the membrane structural proteins. Ten proteins encoded by gvp-1 (gvpMLKJIHGFED-1 and gvpACNO-1) and five proteins encoded by gvp-2 (gvpMLKJIHGFED-2 and gvpACNO-2) gene clusters for the biogenesis of spindle- and cylindrical-, respectively, shaped GV were identified by LC-MS/MS.

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Objectives: To determine the feasibility of using the American Board of Internal Medicine Care of the Vulnerable Elderly Practice Improvement Module (CoVE PIM) in an internal medicine residency program and to assess aggregate resident documentation of geriatric screening in continuity clinics.

Design: Needs assessment chart review for single-site pre-/postintervention study.

Setting: Internal medicine resident primary care continuity clinics.

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The present study examined the relationship between the Rorschach Ego Impairment Index (EII) and psychiatric severity. Search procedures yielded 13 independent samples (total N = 1402, average n = 108, standard deviation = 90) for inclusion in the meta-analysis. Inter-rater reliability analyses demonstrated that coding of effect sizes and moderator variables was completed with good to excellent reliability.

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The doubly labeled water (DLW) method has been essential for understanding animal energetics of free-ranging individuals. The first published studies on free-ranging seabirds were conducted on penguins in the early 1980s. Since then, nearly 50 seabird species with representatives from each major taxonomic order have been studied using DLW.

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Article Synopsis
  • The Purkinje cell degeneration (pcd) mouse model represents a genetic condition that leads to rapid loss of cerebellum and retina neurons, primarily Purkinje cells.
  • The cause of pcd is linked to the malfunction of the Nna1 gene, a conserved zinc carboxypeptidase, which was studied alongside its Drosophila counterpart, NnaD, to understand the disease.
  • Investigations showed that loss of Nna1 function disrupts mitochondrial function and bioenergetics, affecting the expression of specific enzymes vital for energy production.
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Background: Sooty (Puffinus griseus) and short-tailed (P. tenuirostris) shearwaters are abundant seabirds that range widely across global oceans. Understanding the foraging ecology of these species in the Southern Ocean is important for monitoring and ecosystem conservation and management.

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We describe the fabrication of a surface acoustic wave (SAW) device on a LiNbO(3) piezoelectric transducer for the transfer of nonvolatile analytes to the gas phase at atmospheric pressure (a process referred to as nebulization or atomization). We subsequently show how such a device can be used in the field of mass spectrometry (MS) detection, demonstrating that SAW nebulization (SAWN) can be performed either in a discontinuous or pulsed mode, similar to that for matrix assisted laser desorption ionization (MALDI) or in a continuous mode like electrospray ionization (ESI). We present data showing the transfer of peptides to the gas phase, where ions are detected by MS.

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