Publications by authors named "Weaver B"

Background: The United States Food and Drug Administration recently announced a national blood culture (BC) bottle shortage; the exact date of restoration is still being determined.

Aim: Implement a workflow to mitigate the BC bottle shortage at our hospital.

Methods: We created the following clinical decision support workflow in electronic medical record to help mitigate BC bottle use: (a) limit to two BC in 24 hours, (b) only repeat BC if 72 hours have passed from the prior sets, (c) do not repeat BC for coagulase-negative bacteremia when considered a contaminant (i.

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Caspases regulate and execute a spectrum of functions including cell deaths, non-apoptotic developmental functions, and stress responses. Despite these disparate roles, the same core cell-death machinery is required to enzymatically activate caspase proteolytic activities. Thus, it remains enigmatic how distinct caspase functions are differentially regulated.

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Extracorporeal membrane oxygenation (ECMO) is a type of mechanical circulatory support that is increasingly utilized in the United States for severe respiratory and/or cardiac failure refractory to conventional therapies. It is an expensive and complex life support modality. Moreover, patients on ECMO are critically ill and require a strong multidisciplinary care team.

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UBR5 E3 ligase has been associated with cancer susceptibility and neuronal integrity, with functions in chromatin regulation and proteostasis. However, the functions of within animals remain unclear due to lethality in both mammals and flies when disrupted. Using , we show that UBR-5 E3 ligase is required for timely exit of stem fate and complete transition into multiple cell type descendants in an ectodermal blast lineage.

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Mitotic Arrest Deficient 1 (gene name MAD1L1), an essential component of the mitotic spindle assembly checkpoint, is frequently overexpressed in colon cancer, which correlates with poor disease-free survival. MAD1 upregulation induces two phenotypes associated with tumor promotion in tissue culture cells-low rates of chromosomal instability (CIN) and destabilization of the tumor suppressor p53. Using CRISPR/Cas9 gene editing, we generated a novel mouse model by inserting a doxycycline (dox)-inducible promoter and HA tag into the endogenous mouse Mad1l1 gene, enabling inducible expression of HA-MAD1 following exposure to dox in the presence of the reverse tet transactivator (rtTA).

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Article Synopsis
  • Continuous chromosome missegregation, or chromosomal instability (CIN), is common in cancer and can lead to cell death if levels exceed a certain threshold.* -
  • Cancer cells with higher CIN show increased sensitivity to ionizing radiation, as seen in both HPV-positive and negative head and neck cancer models, and laryngeal tumors with high CIN respond better to radiation therapy.* -
  • Docetaxel, a chemotherapeutic drug, enhances radiation sensitivity through CIN by creating abnormal cell division (multipolar spindles), challenging previous assumptions about its mechanism and highlighting CIN as a potential biomarker for radiation response in cancer treatment.*
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2D materials showcase unconventional properties emerging from quantum confinement effects. In this work, a "soft chemical" route allows for the deintercalation of K from the layered antimonide KVSb, resulting in the discovery of a new metastable 2D-Kagome antimonide KVSb with a van der Waals gap of 3.2 Å.

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The Heisenberg uncertainty principle dictates that the position and momentum of an object cannot be simultaneously measured with arbitrary precision, giving rise to an apparent limitation known as the standard quantum limit (SQL). Gravitational-wave detectors use photons to continuously measure the positions of freely falling mirrors and so are affected by the SQL. We investigated the performance of the Laser Interferometer Gravitational-Wave Observatory (LIGO) after the experimental realization of frequency-dependent squeezing designed to surpass the SQL.

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is the leading cause of urinary tract infections (UTIs) in children and adults. The gastrointestinal tract is the primary reservoir of uropathogenic , which can be acquired from a variety of environmental exposures, including retail meat. In the current study, we used a novel statistical-genomic approach to estimate the proportion of pediatric UTIs caused by foodborne zoonotic strains.

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Drugs that perturb microtubules are commonly used to treat breast cancers of all subtypes in both early stage and metastatic disease, but they are effective in only approximately 50% of patients. High concentrations of microtubule-targeting agents can elicit mitotic arrest in cell culture models; however, recent evidence from primary and metastatic breast cancers has revealed that these agents only accumulate at intratumoral levels capable of inducing abnormal multipolar mitotic spindles, not mitotic arrest. Although the maintenance of multipolar spindles can generate cytotoxic rates of chromosomal instability (CIN), focusing of aberrant multipolar spindles into normal bipolar spindles can dramatically reduce CIN and confer resistance to microtubule poisons.

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Background: In this randomized clinical trial, we compared the early effects of polyethylene (PE), polyurethane (PU), and Carbon Fiber insoles in the treatment of PF using a set of patient-reported outcomes.

Methods: Patients were randomly allocated one of the three prefabricated insoles - Carbon Fiber (n = 14), PU (n = 14), or PE (n = 17) for regular use. Their response was recorded using PROMIS 3a (for pain intensity), PROMIS 4a (for pain interference), FAOS (Foot and Ankle Outcome Score), and VAS for pain at baseline, two, six, and twelve weeks.

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Chromosomal instability (CIN) is the persistent reshuffling of cancer karyotypes via chromosome mis-segregation during cell division. In cancer, CIN exists at varying levels that have differential effects on tumor progression. However, mis-segregation rates remain challenging to assess in human cancer despite an array of available measures.

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Contrast-enhanced mammography (CEM) is an emerging breast imaging technology with promise for breast cancer screening, diagnosis, and procedural guidance. However, best uses of CEM in comparison with other breast imaging modalities such as tomosynthesis, ultrasound, and MRI remain inconclusive in many clinical settings. This review article summarizes recent peer-reviewed literature, emphasizing retrospective reviews, prospective clinical trials, and meta-analyses published from 2020 to 2023.

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Objective: Accurate information on the frequency and prevalence of manic or mixed episodes is important for therapeutic, prognostic, and safety concerns. We aimed to estimate the risk of relapse of manic and mixed episodes after delivery in women with bipolar I disorder or schizoaffective disorder-bipolar type.

Methods: Following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines, a comprehensive literature search in PubMed, PsycINFO, Embase, and Cochrane databases was carried out on November 17, 2022, using the terms ((bipolar disorder) OR (manic depressive illness)) AND (mania)) AND (postpartum)) AND (recurrence)) AND (relapse).

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Chronic stress and inflammation are both outcomes and major drivers of many human diseases. Sustained responsiveness despite mitigation suggests a failure to sense resolution of the stressor. Here we show that a proteolytic cleavage event of fatty acid synthase (FASN) activates a global cue for stress resolution in Caenorhabditis elegans.

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Background: Psychological response is important in return-to-sport decisions for athletes recovering from anterior cruciate ligament reconstruction (ACLR). The purpose of this study was to compare psychological response after ACLR with a concomitant meniscus repair compared to isolated ACLR.

Methods: Thirty-five individuals completed the Tampa Scale of Kinesiophobia (TSK) and Anterior Cruciate Ligament Return-to-Sport after Injury (ACL-RSI) scale before ACLR and 2, 4, and 6 months after ACLR.

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Teamwork, communication, and workload issues continue to contribute to patient safety events. The authors developed a diagnostic mixed methods toolkit combining a behavior observation tool, semistructured interview guide, and surveys to proactively identify relevant gaps. Applied across 14 units at three hospitals, this toolkit yielded 344 findings with 156 associated recommendations and took, on average, four days of observation.

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Background: Relatively little is known about the cognitive processes of healthcare workers that mediate between performance-shaping factors (eg, workload, time pressure) and adherence to infection prevention and control (IPC) practices. We taxonomised the cognitive work involved in IPC practices and assessed its role in how pathogens spread.

Methods: Forty-two registered nurses performed patient care tasks in a standardised high-fidelity simulation.

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Exchanging the native iron of heme for other metals yields artificial metalloproteins with new properties for spectroscopic studies and biocatalysis. Recently, we reported a method for the biosynthesis and incorporation of a non-natural metallocofactor, cobalt protoporphyrin IX (CoPPIX), into hemoproteins using the common laboratory strain BL21(DE3). This discovery inspired us to explore the determinants of metal specificity for metallocofactor biosynthesis in .

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Objectives: Baltes and Baltes' "selective optimization with compensation" model is pertinent to driving but evidence about the use of compensation using longitudinal designs is scarce. Therefore, we sought to determine if older drivers reduced their engagement in distracting behaviors while driving, over a 6-year period.

Methods: We used data captured over several annual assessments from a cohort of 583 drivers aged 70 and older to determine if their engagement in 12 distracting behaviors (e.

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Microtubule-targeted agents are commonly used for cancer treatment, though many patients do not benefit. Microtubule-targeted drugs were assumed to elicit anticancer activity via mitotic arrest because they cause cell death following mitotic arrest in cell culture. However, we recently demonstrated that intratumoral paclitaxel concentrations are insufficient to induce mitotic arrest and rather induce chromosomal instability (CIN) via multipolar mitotic spindles.

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The conserved p38 MAPK family is activated by phosphorylation during stress responses and inactivated by phosphatases. C. elegans PMK-1 p38 MAPK initiates innate immune responses and blocks development when hyperactivated.

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Arterial catheter-related bloodstream infections have been identified as a significant healthcare burden. However, the incidence of arterial catheter-related infections is commonly underestimated in clinical practice, and adherence to CDC-recommended practices is inconsistent. Several categories of interventions have been studied to prevent arterial catheter-related bloodstream infections, which include barrier precautions, cutaneous antisepsis, insertion site selection, dressings, chlorhexidine-impregnated sponges, and the duration of catheter placement with or without catheter replacement.

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Article Synopsis
  • This study compares two treatment methods for tibia fracture-related infections (FRIs) within 90 days of initial intramedullary nail (IMN) placement: debridement, antibiotics, and implant retention (DAIR) versus IMN removal with further fracture stabilization strategies.
  • Out of 66 patients treated, approximately 42.4% received DAIR and 57.6% had IMN removal, with both methods showing similar rates of bone healing (75.8% achieved healing).
  • Factors like time from injury, fracture severity, and fewer surgeries after treatment were linked to better healing outcomes, but neither treatment method significantly outperformed the other in preventing persistent nonunion or amputation.
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