Publications by authors named "Higginbotham M"

Article Synopsis
  • Recent studies highlight the role of intermediate/semi-volatile organic compounds from asphalt in forming secondary organic aerosols (SOAs), but results vary widely.
  • This research aims to provide more accurate emission factors for roofing materials' contributions to SOA formation by examining affecting variables like rooftop temperatures and material properties.
  • The findings estimate that asphalt roofing produces significantly lower SOA emissions compared to mobile sources like diesel and gasoline, with a central tendency of 1.7 × 10 Gg/yr for the hottest hours in Southern California.
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Article Synopsis
  • The study assesses a new algorithm for identifying Long COVID in pediatric patients, aiming to standardize how this condition is defined and recognized in the medical community.
  • Using data from 31,781 patients, the algorithm showed moderate accuracy when compared to traditional chart reviews, with an overlap rate of 62%, but also noted significant disagreement on cases.
  • The findings suggest that discrepancies may stem from varying interpretations of Long COVID symptoms, emphasizing the need for a clearer clinical definition to improve identification and support research efforts.
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Objective: Since 2009, the Big Ten Pharmacy Assessment Collaborative has surveyed their Doctor of Pharmacy (PharmD) graduates regarding their first employment plans. The current study updates the results from 2013-2017, since which the nationwide demand for pharmacists decreased, then increased again due to COVID-19.

Methods: Quantitative first-position employment data from 2018-2022 were tracked among 6687 Big Ten PharmD graduates.

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Objectives: Vaccination reduces the risk of acute coronavirus disease 2019 (COVID-19) in children, but it is less clear whether it protects against long COVID. We estimated vaccine effectiveness (VE) against long COVID in children aged 5 to 17 years.

Methods: This retrospective cohort study used data from 17 health systems in the RECOVER PCORnet electronic health record program for visits after vaccine availability.

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A wholesale/retail model delivers drinking water to over 5 million residents in metropolitan Melbourne (Australia). Water Safety Plans were implemented in 1999 ahead of being regulatory mandated in 2003. With over 20 years of WSP application, this collaborative paper by the wholesaler and retailer utilities presents practical examples of drinking water quality risk management in challenging operational environments, highlighting lessons learnt, improvements made and outcomes achieved.

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Objective: Vaccination reduces the risk of acute COVID-19 in children, but it is less clear whether it protects against long COVID. We estimated vaccine effectiveness (VE) against long COVID in children aged 5-17 years.

Methods: This retrospective cohort study used data from 17 health systems in the RECOVER PCORnet electronic health record (EHR) Program for visits between vaccine availability, and October 29, 2022.

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Although the American Association of Colleges of Pharmacy (AACP) Curriculum Quality Surveys (CQS) are required for programs to distribute and utilize as part of accreditation standards, programs face challenges in survey administration and timing, interpreting data and results, and following up on action plans. Because the CQS surveys are standardized, they can allow for greater comparison among institutions, yet interpretation of the items can vary considerably. Programs have flexibility in determining samples for administration and timing of administration (ie, number of years), but some participants (such as preceptors) can suffer from survey overload if multiple institutions administer in the same year.

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Early intervention for students at risk of academic difficulty can be more effectively accomplished using a team-based approach that capitalizes on the expertise of many in a pharmacy education community. Authored by members of the Big Ten Alliance Pharmacy Assessment Collaborative, this commentary advocates for better integration of assessment professionals, pharmacy faculty, and student support services to capture academic, accountability, and behavior-related data that might signal student intellectual and/or behavioral challenges and manifest as marginal academic performance. Assessment professionals can assist with creating data dashboards/monitoring systems, recognizing trends within the data, refining formulas to identify at-risk students, and measuring the impact of interventions to determine which approaches positively and significantly influence outcomes.

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The aim of this study was to investigate the distribution, tolerance, and anticancer and antiviral activity of Zn-based physiometacomposites (PMCs). Manganese, iron, nickel and cobalt-doped ZnO, ZnS or ZnSe were synthesized. Cell uptake, distribution into 3D culture and mice, and biochemical and chemotherapeutic activity were studied by fluorescence/bioluminescence, confocal microscopy, flow cytometry, viability, antitumor and virus titer assays.

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Background: Gastrointestinal (GI) toxicity is a major dose-limiting factor in dogs undergoing chemotherapy. A proposed mechanism of GI toxicity includes chemotherapy-driven GI dysbiosis. This study was designed to determine the effects of probiotic administration on GI side-effects in dogs receiving multi-agent chemotherapy.

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Purpose: The mTOR pathway has been identified as a key nutrient signaling hub that participates in metastatic progression of high-grade osteosarcoma. Inhibition of mTOR signaling is biologically achievable with sirolimus, and might slow the outgrowth of distant metastases. In this study, pet dogs with appendicular osteosarcoma were leveraged as high-value biologic models for pediatric osteosarcoma, to assess mTOR inhibition as a therapeutic strategy for attenuating metastatic disease progression.

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Persistent small-cell lymphocytosis in dogs with a concurrent mediastinal mass has been associated with both thymoma and small-cell lymphoma. In thymomas, neoplastic thymic epithelial cells induce overproduction and release of polyclonal lymphocytes, whereas thymic lymphoma results in thymic effacement by a clonal expansion of neoplastic lymphocytes and subsequent leukemic phase of lymphoma. Flow cytometry has been used to differentiate these 2 entities by immunophenotyping mediastinal mass aspirates.

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Smaller dogs are known to have an increased risk of chemotherapy-induced myelosuppression for doxorubicin, mitoxantrone and melphalan. This retrospective study aimed to determine if dogs <15 kg and <10 kg experienced greater degrees of myelosuppression following treatment with carboplatin chemotherapy compared with dogs ≥15 kg. One hundred and one dogs treated with carboplatin for a variety of malignancies were retrospectively analysed.

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The unique anticancer, biochemical, and immunologic properties of nanomaterials are becoming a new tool in biomedical research. Their translation into the clinic promises a new wave of targeted therapies. One nanomaterial of particular interest are zinc oxide (ZnO) nanoparticles (NPs), which has distinct mechanisms of anticancer activity including unique surface, induction of reactive oxygen species, lipid oxidation, pH, and also ionic gradients within cancer cells and the tumor microenvironment.

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Objective: To calculate a risk prediction model for hemangiosarcoma (HSA) diagnosis in dogs presenting with nontraumatic hemoabdomen.

Design: Retrospective multicenter observational cohort study enrolling dogs presented 2003-2016.

Setting: Five academic veterinary medical centers.

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Combining conventional cytotoxic maximum tolerated dose (MTD) chemotherapy with low-dose metronomic and/or anti-angiogenic agents is a exciting area of oncologic research. The objective of this study was to establish the MTD, safety and adverse event (AE) profile of 1 such drug combination. This prospective phase I dose-finding clinical trial assumed an open-label 3 + 3 cohort design.

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Preliminary studies have supported use of toceranib phosphate (Palladia®) in treatment of canine nasal carcinomas, though the mechanisms of its activity are unknown. This study evaluated sixteen canine nasal carcinoma and five normal nasal epithelium samples for expression and phosphorylation of known targets of toceranib [vascular endothelial growth factor receptor-2 (VEGR2), platelet derived growth factor alpha (PDGFR-α), platelet derived growth factor receptor beta (PDGFR-β), and stem cell factor receptor (c-KIT)] and epidermal growth factor receptor 1 (EGFR1) using immunohistochemistry, RT-PCR and a receptor tyrosine kinase (RTK) phosphorylation panel. Protein for VEGFR2 was expressed in all carcinomas, PDGFR-α was noted in 15/16, whereas PDGFR-β was detected in 3/16 samples, but showed significant stromal staining.

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Article Synopsis
  • A 10-year-old Labrador Retriever with a history of flank tumors presented with a painful left eye, leading to diagnosis of secondary glaucoma and blindness.
  • Diagnostic surgery revealed that the eye problem was due to a metastatic spindle cell sarcoma, originating from the previously treated flank mass.
  • The dog's condition worsened rapidly post-surgery, resulting in euthanasia just a month later; this case is the first to document such intraocular metastasis in veterinary medicine.
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The use of cytotoxic drugs to treat neoplastic conditions is increasing in veterinary practices. Many agents have the potential to be genotoxic and evidence of exposure to cytotoxic drugs has been found in healthcare workers handling these pharmaceuticals. To date, limited contamination evaluations have been performed in veterinary practices.

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Medical records of 396 dogs undergoing splenectomy for treatment of a splenic mass or nodular disease were reviewed retrospectively. Overall distribution of histopathologic diagnosis and clinicopathologic features were evaluated for 325 dogs that met inclusion criteria. Dogs were dichotomized into two groups based on weight, with the statistically derived cutoff identified as 27.

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A 6 yr old castrated male English springer spaniel was evaluated with a 1 mo history of progressive right forelimb lameness with recent swelling around the elbow joint. Physical examination findings included lameness of the right forelimb, muscle atrophy around the right shoulder, grade 2/6 heart murmur, and moderate dental disease. Results of a complete blood cell count and serum biochemical analysis were unremarkable with the exception of a mildly increased alkaline phosphatase (368 U/L; reference range, 128-328 U/L).

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Case Description: An approximately 5-year-old sexually intact male alpaca was evaluated because of a right-sided maxillary mass that had recurred after previous surgical debulking.

Clinical Findings: Clinical, radiographic, and CT examination revealed an approximately 1.5-cm-diameter soft tissue mass associated with expansile osteolysis of the maxillary alveolar bone, beginning at the level of the right maxillary third premolar tooth extending caudally to the level of the rostral roots of the second molar tooth.

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Background: Health care-associated infections are serious complications impacting 2 million patients and accounting for approximately 100,000 deaths per year. In the present study, we evaluated the effectiveness of a new hand hygiene monitoring program (HHMP) and measured the sustainability of this effectiveness over a 1-year period.

Methods: The HHMP consisted of 4 key components: extensive education, conspicuous and visible monitors, immediate feedback concerning compliance to health care workers, and real-time data dissemination to leadership.

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