Publications by authors named "Christine Thomas"

Purpose: Postoperative delirium (POD) in patients with obstructive sleep apnea (OSA) is associated with increased mortality and healthcare costs. In this study, we investigated the association of OSA risk, serum biomarkers for central nervous ischemia (S100B and NSE), and POD.

Methods: After research ethics approval, patients completed the STOP BANG assessment before undergoing elective surgery.

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  • * Researchers analyzed 84 bacterial isolates from milk of cows with clinical mastitis and found a mix of genetically different strains, some closely related, while most were sensitive to key antibiotics like ampicillin and vancomycin.
  • * A significant percentage of strains showed resistance to various antibiotics, with concerns about multi-drug resistant strains, emphasizing the need for careful monitoring and judicious use of antimicrobials in livestock.
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Iron cyanide compounds are among the oldest known synthetic coordination compounds, dating back to the early 18 century. By contrast, iron complexes of the cyaphide ion (C≡P)─a heavy valence isoelectronic analog of the cyanide ion─are unknown. Herein we report the synthesis of highly stable mono- and bis-cyaphide complexes of iron(II), namely Fe(depe)(Cl)(CP) and Fe(depe)(CP) (depe = 1,2-bis(diethylphosphino)ethane).

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Hydrogenations are fundamentally and industrially important reactions that are atom economical paths to synthesize value-added products from feedstock chemicals. The cooperative effects of two or more metal centers in multimetallic active sites is a successful strategy to activate small molecules and facilitate catalytic reactions, and this strategy has been recently applied to catalytic hydrogenation reactions. Furthermore, heterobimetallic complexes have been well-documented to provide novel reaction pathways and improved selectivity, compared to their homo-bimetallic and monometallic analogues.

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Heterobimetallic complexes are studied for their ability to mimic biological systems as well as active sites in heterogeneous catalysts. While specific interest in early/late heterobimetallic systems has fluctuated, they serve as important models to fundamentally understand metal-metal bonding. Specifically, the polarized metal-metal multiple bonds formed in highly reduced early/late heterobimetallic complexes exemplify how each metal modulates the electronic environment and reactivity of the complex as a whole.

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Redox-active ligands improve the reactivity of transition metal complexes by facilitating redox processes independent of the transition metal center. A tetradentate square planar (PNCHCHNP)Co (1) complex was synthesized and the ethylene backbone was dehydrogenated through hydrogen atom abstraction to afford (PNCHCHNP)Co (2), which now contains a redox-active ligand. The ligand backbone of 2 can be readily hydrogenated with H to regenerate 1.

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Here we report the synthesis and characterization of diiron complexes containing triaryl N and NS ligands derived from -phenylenediamine. The complexes display significant differences in Fe-Fe distances and magnetic properties that depend on the identity of the flanking NMe and SMe donor groups.

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In the early months of the COVID-19 pandemic The National Resource Center for Refugees, Immigrants and Migrants (NRC-RIM) was established. NRC-RIM initially sought to rapidly identify promising case investigation and contact tracing (CICT) practices within refugee, immigrant, and migrant communities. Between September 2020 and April 2021, the team conducted 60 interviews with individuals from cross-sector organizations (i.

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Background: Patient engagement (PE) or involvement in research is when patient partners are integrated onto teams and initiatives (not participants in research). A number of health research funding organisations have PE frameworks or rubrics but we are unaware of them applying and reporting on their own internal PE efforts. We describe our work at the Canadian Institutes of Health Research's Institute of Musculoskeletal Health and Arthritis (CIHR IMHA) to implement, evaluate and understand the impact of its internal PE strategy.

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Aims: In October 2023, the Tennessee Department of Health identified an outbreak of Shiga toxin-producing Escherichia coli (STEC) O157:H7 infections among elementary school students who attended school field trips to the same farm animal exhibit. Our aim was to determine STEC source and prevent additional illnesses by initiating epidemiologic, laboratory and environmental investigations.

Methods And Results: We identified cases using laboratory-based surveillance and by surveying caregivers of children who attended the exhibit.

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  • Post-operative delirium (POD) affects 14-56% of older patients, prompting the need to identify those at risk, leading to this study focused on creating a machine learning model for POD prediction.
  • The model was based on data from 878 patients aged 70 and above, using 15 key features such as comorbidities, cognitive assessments, and operational metrics to train logistic regression and support vector machine algorithms.
  • The linear support vector machine model showed promising performance with an ROC area under the curve of 0.82 in training and 0.81 in testing, indicating its potential for clinical use in preventing POD.
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Background: Respiratory syncytial virus (RSV) can cause hospitalization in young children and older adults. With vaccines and monoclonal antibody prophylaxis increasingly available, identifying social factors associated with severe illnesses can guide mitigation efforts.

Methods: Using data collected by the RSV Hospitalization Surveillance Network from 2016 to 2023, we identified RSV hospitalizations in Tennessee.

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A tetradentate bis(amido)bis(phosphine) Fe complex, (PNNP)Fe, is shown to activate the terminal C-H bond of aryl alkynes across its Fe-N bonds. (PNNP)Fe is also shown to catalytically dimerize terminal aryl alkynes to produce 1,3-enynes with  :  ratios as high as 96 : 4 with yields up to 95% and loadings as low as 1 mol% at 30 °C in 2 h. A plausible metal-ligand cooperative mechanism invoking a vinylidene intermediate is proposed.

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Syndromic polymerase chain reaction (PCR) panels are used to test for pathogens that can cause rash illnesses, including measles. Rash illnesses have infectious and noninfectious causes, and approximately 5% of persons experience a rash 7-10 days after receipt of a measles, mumps, and rubella (MMR) vaccine. MMR vaccine includes live attenuated measles virus, which is detectable by PCR tests.

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Objectives: Mpox surveillance was integral during the 2022 outbreak response. We evaluated implementation of mpox surveillance in Tennessee during an outbreak response and made recommendations for surveillance during emerging infectious disease outbreaks.

Methods: To understand surveillance implementation, system processes, and areas for improvement, we conducted 8 semistructured focus groups and 7 interviews with 36 health care, laboratory, and health department representatives during September 9-20, 2022.

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The COVID-19 pandemic has disproportionately impacted migrant farmworkers (MFWs). MFWs have experienced higher rates of infection and death than any other occupational group in the United States due to workplace exposure risks, overcrowded housing, and limited access to personal protective equipment. Barriers to accessing COVID-19 vaccines have also contributed to these disparities, especially in rural areas where the pandemic's impact has been devastating.

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Background: In Canada, more than 2 million people live with osteoporosis, a disease that increases the risk for fractures, which result in excess mortality and morbidity, decreased quality of life and loss of autonomy. This guideline update is intended to assist Canadian health care professionals in the delivery of care to optimize skeletal health and prevent fractures in postmenopausal females and in males aged 50 years and older.

Methods: This guideline is an update of the 2010 Osteoporosis Canada clinical practice guideline on the diagnosis and management of osteoporosis in Canada.

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Objectives: To understand public health organizations' experiences providing comprehensive COVID-19 case investigation and contact tracing, and related promising practices with refugee, immigrant and migrant communities.

Methods: We interviewed public health professionals (September 2020 to February 2021) from local and state health departments using a geographically stratified, purposive sampling approach. A multidisciplinary team at the National Resource Center for Refugees, Immigrants and Migrants (NRC-RIM) conducted a thematic analysis of the data.

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The bonding interactions of a synthesized pincer-ligated manganese dicarbonyl complex featuring an N-heterocyclic phosphenium (NHP) central moiety are explored. The pincer ligand [PPP]Cl was coordinated to a manganese center using Mn(CO)Br and 254 nm light to afford the chlorophosphine complex (PPP)Mn(CO)Br () as a mixture of halide exchange products and stereoisomers. The target dicarbonyl species (PPP)Mn(CO) () was prepared by treatment of with 2 equiv of the reductant KC.

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Effective provision of COVID-19 vaccines could mitigate the disproportionate impact of the COVID-19 pandemic experienced by many immigrant communities. To describe organizational experiences in using COVID-19 vaccination programs, qualitative interviews were conducted from September 2020 to April 2021 with representatives from public health, health system, and community organizations responding to the COVID-19 pandemic among immigrant communities across the United States. Interviews followed a semistructured interview guide and were audio recorded, transcribed, and coded.

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Bacteria of the genus pose a major risk to livestock, the food economy, and public health. infections are one of the leading causes of food poisoning. The identification of serovars of achieved by their diverse surface antigens is essential to gain information on their epidemiological context.

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  • The study investigates the effectiveness of Oxford Nanopore Technology (ONT) long-read sequencing compared to Illumina short-read sequencing for understanding the genetic makeup of highly pathogenic bacteria like Bacillus anthracis, Brucella species, and Francisella tularensis.* -
  • Results show that ONT produces ultra-long reads suitable for near-complete assembly of bacterial genomes, while Illumina offers higher accuracy in sequencing. Improvements were noted with ONT flow cell version 10.4 compared to version 9.4.1.* -
  • Both technologies successfully identified genetic markers for virulence and clades of the bacteria, with ONT's version 10.4 achieving results comparable to Illumina for certain
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