28 results on '"Burcham, P."'
Search Results
2. Linguistic isolation correlates with length of stay and mortality for pediatric oncology patients in California.
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Ennett, Samuel, Das, Akansha, Burcham, Megan, Fitzgerald, Robert, Boville, Brian, Rajasekaran, Surender, Kortz, Teresa, and Leimanis-Laurens, Mara
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cancer ,health disparities ,health inequities ,linguistic isolation ,medical length of stay ,mortality ,pediatric intensive care unit ,pediatrics ,Humans ,California ,Length of Stay ,Child ,Female ,Neoplasms ,Male ,Intensive Care Units ,Pediatric ,Child ,Preschool ,Adolescent ,Infant ,Hospital Mortality - Abstract
OBJECTIVE: To evaluate social drivers of health and how they impact pediatric oncology patients clinical outcomes during pediatric intensive care unit (PICU) admission via correlation with patient ZIP codes. METHODS: Demographic, clinical, and outcome variables from Virtual Pediatric Systems®, LLC for oncology patients (2009-2021) in California PICUs (excluding postoperative) using 3-digit ZIP Codes with social drivers of health variables linguistic isolation, poverty, race/ethnicity, and education abstracted from American Community Survey data for 3-digit ZIP Codes using the Environmental Protection Agencys EJScreen tool. Outcomes of length of stay (LOS), mortality, acuity scores, were compared with social variables. RESULTS: Positive correlation between mortality and minority racial groups (Hispanic/Latino) across ZIP Codes (correlation coefficients of 0.45 (95% CI: 0.22-0.64, p
- Published
- 2024
3. Capacitive deionization chloride and fluoride removal by amine and titania-modified biochar electrodes
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Stephanie, Hellen, Burcham, Joshua K., Martin, Bryce, and Wipf, David O.
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- 2024
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4. A conserved interdomain microbial network underpins cadaver decomposition despite environmental variables.
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Burcham, Zachary, Belk, Aeriel, McGivern, Bridget, Bouslimani, Amina, Ghadermazi, Parsa, Martino, Cameron, Shenhav, Liat, Zhang, Anru, Shi, Pixu, Emmons, Alexandra, Deel, Heather, Xu, Zhenjiang, Nieciecki, Victoria, Zhu, Qiyun, Shaffer, Michael, Panitchpakdi, Morgan, Weldon, Kelly, Cantrell, Kalen, Ben-Hur, Asa, Reed, Sasha, Humphry, Greg, Ackermann, Gail, McDonald, Daniel, Chan, Siu, Connor, Melissa, Boyd, Derek, Smith, Jake, Watson, Jenna, Vidoli, Giovanna, Steadman, Dawnie, Lynne, Aaron, Bucheli, Sibyl, Dorrestein, Pieter, Wrighton, Kelly, Carter, David, Metcalf, Jessica, and Knight, Rob
- Abstract
Microbial breakdown of organic matter is one of the most important processes on Earth, yet the controls of decomposition are poorly understood. Here we track 36 terrestrial human cadavers in three locations and show that a phylogenetically distinct, interdomain microbial network assembles during decomposition despite selection effects of location, climate and season. We generated a metagenome-assembled genome library from cadaver-associated soils and integrated it with metabolomics data to identify links between taxonomy and function. This universal network of microbial decomposers is characterized by cross-feeding to metabolize labile decomposition products. The key bacterial and fungal decomposers are rare across non-decomposition environments and appear unique to the breakdown of terrestrial decaying flesh, including humans, swine, mice and cattle, with insects as likely important vectors for dispersal. The observed lockstep of microbial interactions further underlies a robust microbial forensic tool with the potential to aid predictions of the time since death.
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- 2024
5. A conserved interdomain microbial network underpins cadaver decomposition despite environmental variables
- Author
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Burcham, Zachary M., Belk, Aeriel D., McGivern, Bridget B., Bouslimani, Amina, Ghadermazi, Parsa, Martino, Cameron, Shenhav, Liat, Zhang, Anru R., Shi, Pixu, Emmons, Alexandra, Deel, Heather L., Xu, Zhenjiang Zech, Nieciecki, Victoria, Zhu, Qiyun, Shaffer, Michael, Panitchpakdi, Morgan, Weldon, Kelly C., Cantrell, Kalen, Ben-Hur, Asa, Reed, Sasha C., Humphry, Greg C., Ackermann, Gail, McDonald, Daniel, Chan, Siu Hung Joshua, Connor, Melissa, Boyd, Derek, Smith, Jake, Watson, Jenna M. S., Vidoli, Giovanna, Steadman, Dawnie, Lynne, Aaron M., Bucheli, Sibyl, Dorrestein, Pieter C., Wrighton, Kelly C., Carter, David O., Knight, Rob, and Metcalf, Jessica L.
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- 2024
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6. A Case Study of a Multi-Faceted Approach to Evaluating Teacher Candidate Ratings
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Jones, Eli, Wind, Stefanie A., Burcham, Jan, Hart, Anna, and Dailey, Thomas
- Abstract
While much research has explored the quality of traditional teacher evaluations, little is known about the quality of ratings in preservice teacher evaluations. This paper presents a case study of Many-facet Rasch measurement (MFR, Linacre, 1989) to explore potential rater effects influencing the quality of supervisor ratings in educator preparation programs (EPPs) at a comprehensive four-year university in the Southern United States. Because it offers a fine-grained look at the reasonableness of ratings related to each aspect of the evaluation: the individual raters, the candidates, and the teaching subdomains (Wind & Jones, 2019), the authors apply MFR to demonstrate its usefulness in answering the following questions related to preservice teachers: (1) How self-consistent are preservice teacher supervisors when giving ratings? (2) How well do preservice teacher supervisors differentiate between candidates at differing levels of teaching proficiency? (3) How well do preservice teacher supervisors differentiate between teaching subdomains? (4) Do supervisors apply the rating scale on the rubric in the intended manner? (5) What differences exist between faculty, field experience supervisors, and classroom teachers in the application of the rubric to specific teaching subdomains?
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- 2023
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7. Geometry matters for sonic tomography of trees
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Burcham, Daniel C., Brazee, Nicholas J., Marra, Robert E., and Kane, Brian
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- 2023
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8. Microbiota succession throughout life from the cradle to the grave
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Martino, Cameron, Dilmore, Amanda Hazel, Burcham, Zachary M., Metcalf, Jessica L., Jeste, Dilip, and Knight, Rob
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- 2022
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9. Competitive Behaviors between Black Vultures (Coragyps atratus) and Turkey Vultures (Cathartes aura) during Scavenging.
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Herbert, Amanda M., Zollner, Patrick A., Jones, Landon R., Wahl, Marian L., Burcham, Grant N., Kluever, Bryan M., Humberg, Lee A., and Quinby, Brandon M.
- Abstract
Copyright of Journal of Raptor Research is the property of Raptor Research Foundation and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2024
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10. Effects of Photoperiod Treatments on Stock Plants and Cutting Rooting of Winecups.
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Conner Koski, Ronda D., Klett, James E., Davis, Colten V. A., and Burcham, Daniel C.
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ROOTING of plant cuttings ,VEGETATIVE propagation ,SEED dormancy ,PLANT cuttings ,DROUGHT tolerance - Abstract
Production of attractive and water-efficient plants native to the plains and prairies of central North America can sometimes be limited because of problems associated with successful rooting of vegetative cuttings. Winecups (Callirhoe involucrata) is an attractive native plant, valued for its long period of bloom, drought tolerance, and winter hardiness, but can be difficult to propagate from seeds and vegetative cuttings. Seed dormancy issues can result in unreliable germination and seedling variations, which reduces crop uniformity. Although propagation from rooted cuttings maintains crop uniformity, cuttings often fail to root or root poorly. Manipulating the growing conditions of stock plants to suppress reproductive growth may improve rooting success of vegetative cuttings. Based on research conducted earlier with other ornamental perennials and programmed photoperiods, winecups plants were grown under three programmed photoperiods to determine if a particular photoperiod could be used to suppress reproductive growth and promote vegetative growth. The study consisted of three experiments, all conducted in similar fashion but at different times during the year. Results indicate that plants grown under 10-hour and 8-hour photoperiods remained vegetative longer when compared with plants grown under 12-hour photoperiod. Vegetative cuttings harvested from plants grown under 8-hour photoperiod had higher percent rooting when compared with vegetative cuttings harvested from plants grown under 10-hour and 12-hour photoperiods. Based on the findings from this research, plant propagators may be able to increase production of winecups by growing stock plants under 8-hour photoperiod. [ABSTRACT FROM AUTHOR]
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- 2024
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11. Effects of Photoperiod Treatments on Stock Plants and Cutting Rooting of Three Cultivars of Ornamental Perennials.
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Conner Koski, Ronda D., Klett, James E., and Burcham, Daniel
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ROOTING of plant cuttings ,CULTIVARS ,HERBACEOUS plants ,PERENNIALS ,SAGE ,VEGETATIVE propagation - Abstract
Many species of herbaceous perennials now have numerous cultivars, with growth habits and flower colors unique to each cultivar. Vegetative propagation is required so that resulting plants are genetically identical to the parent plant. Although many cultivars are selected for precocious and vigorous flowering, it is often difficult to collect adequate vegetative cuttings from such cultivars for commercial production because juvenile (vegetative) growth is preferred for highquality cuttings. Cuttings that are reproductive (with flower buds or flowers) can have reduced or delayed rooting and increased occurrences of fungal pathogens (especially Botrytis species), resulting in lack of crop uniformity. We sought to answer the question, can growing stock plants of herbaceous perennials under defined photoperiods extend the length of the vegetative period and enhance the rooting of cuttings harvested from these stock plants? In this study, stock plants of 'P009S' twinspur (Diascia integerrima), 'Furman's Red' sage (Salvia greggii), and 'Wild Thing' sage (Salvia greggii) were grown under ambient, 12-hour light, 10-hour light, and 8-hour light to determine if a particular photoperiod could be used to suppress reproductive growth by promoting vegetative growth, thereby enhancing cutting rooting success. Effects of photoperiod treatments varied among the plant cultivars studied. Plants grown under 8-hour photoperiod had longer duration of vegetative growth, smaller growth rates, and lower dry weights when compared with plants grown under 12-hour or 10-hour photoperiod. Plants grown under 12-hour photoperiod had shorter duration of vegetative growth, larger growth rates, and higher dry weights when compared with plants grown under 10-hour and 8-hour photoperiods. The probability of rooting of cuttings harvested from stock plants of 'P009S' twinspur, 'Furman's Red' sage, and 'Wild Thing' sage grown under 12-hour and 10-hour photoperiods was greater when compared with cuttings harvested from stock plants grown under 8 h photoperiod. [ABSTRACT FROM AUTHOR]
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- 2024
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12. Cytauxzoonosis in Indiana, USA: a case series of cats infected with Cytauxzoon felis (2018–2022).
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Reichard, Mason V, Cotey, Stacy R, Dangoudoubiyam, Sriveny, Weerarathne, Pabasara, Tussey, Kenneth, Wilkes, Rebecca P, Miller, Craig A, Mehringer, Lori, and Burcham, Grant N
- Abstract
Case series summary: This case series describes six cases involving seven cats naturally infected with Cytauxzoon felis in Indiana, USA. Medical records were retrospectively reviewed and all available information on signalment, history, clinical and diagnostic findings, treatment, outcome and pathology was reported. Cats infected with C felis were domestic shorthairs, were aged between 2 and 9 years and all but one of the cats were male. The seven infected cats originated from five counties in southwestern Indiana. Six of seven cats were found to have acute cytauxzoonosis based on clinical signs, gross pathologic lesions, observation of C felis in tissues and/or detection of C felis DNA. One cat was identified as a subclinical survivor cat with no known clinical history of cytauxzoonosis. Relevance and novel information: The reported cases are the first confirmed reports of acute and chronic cytauxzoonosis in cats from Indiana and document an expansion in the range of C felis. Veterinary practitioners in Indiana should consider infection with C felis as a differential diagnosis for cats that present with fever, inappetence, lethargy, depression, dehydration, dyspnea, hemolytic crisis, anorexia or icterus. Administration of approved acaricides to cats currently offers the best protection and control against C felis infection. [ABSTRACT FROM AUTHOR]
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- 2024
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13. (693) Infection with Covid Variants of Concern in a Lung Transplant Population
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Rosenheck, J.P., primary, Ramsammy, V., additional, Kirkby, S., additional, Ganapathi, A., additional, Mokadam, N., additional, Henn, M., additional, Sarwar, S., additional, Nichols, C., additional, Marschalk, N., additional, Fallah, T., additional, Burcham, P., additional, Sawyer, C., additional, Mohr, J., additional, Hoover, S., additional, Nicholson, K., additional, McLaughlin, B., additional, Brown, R., additional, Carter, S., additional, Maas, K., additional, Bennett, J., additional, Shafner, C., additional, Reilly, M., additional, Whitson, B., additional, and Nunley, D., additional
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- 2023
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14. (659) Post COVID Pulmonary Necrosis and Polymicrobial Empyema Managed with Bilateral Lung Transplantation and Post-Transplant Local and Parenteral Antibiotics
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Marschalk, N., primary, Nichols, C., additional, Burcham, P., additional, Rosenheck, J., additional, Ramsammy, V., additional, Kirkby, S., additional, Nunley, D., additional, Henn, M., additional, Ganapathi, A., additional, Mokadam, N., additional, Whitson, B., additional, and Sarwar, S., additional
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- 2023
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15. Identifying the Role of Peroxide Stress Regulation in Vaginal Colonization of Streptococcus Agalactiae.
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S, Lumsdaine, J, Da Conceicao Mendonca, A, Powers, and L, Burcham
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STREPTOCOCCUS agalactiae ,PEROXIDES - Published
- 2024
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16. Development of a Novel Model to Study the Impact of Zinc on Group B Streptococcal Vaginal Cell Interactions.
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A, Behler, J, McDonald, E, Williams, I, Chapel Gore, M, Shoulders, and L, Burcham
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ZINC - Published
- 2024
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17. Understanding Interactions Between Lactobacillus Spp and Group B Streptococcus in the Vaginal Tract.
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J, Da Conceiçao Mendonça, M, Koschny, and L, Burcham
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STREPTOCOCCUS agalactiae ,LACTOBACILLUS - Published
- 2024
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18. Role of Intercellular Adhesion Molecule 1 (ICAM-1) in Group B Streptococcus-Induced Host Immune Response.
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N, Smith, HA, Boshnag, and LR, Burcham
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CD54 antigen ,IMMUNE response - Published
- 2024
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19. Investigation of a common canine factor VII deficiency variant in dogs with unexplained bleeding on autopsy.
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Clark, Jessica A., Hooser, Stephen B., Dreger, Dayna L., Burcham, Grant N., and Ekenstedt, Kari J.
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AUTOPSY ,DOGS ,DOG breeds ,HEMORRHAGE ,GENETIC variation ,CANIDAE - Abstract
The factor VII (FVII) protein is an integral component of the extrinsic coagulation pathway. Deleterious variants in the gene encoding this protein can result in factor VII deficiency (FVIID), a bleeding disorder characterized by abnormal (slowed) clotting with a wide range of severity, from asymptomatic to life-threatening. In canids, a single FVIID-associated variant, first described in Beagles, has been observed in 24 breeds and mixed-breed dogs. Because this variant is present in breeds of diverse backgrounds, we hypothesized that it could be a contributing factor to unexplained bleeding observed in some canine autopsy cases. DNA was extracted from paraffin-embedded tissue samples from 67 anticoagulant-negative autopsy cases with unexplained etiology for gross lesions of hemorrhage. Each dog was genotyped for the c.407G>A (F7
1 ) variant. Experimental controls included 3 known heterozygotes and 2 known homozygotes for the F71 variant, 2 normal dogs with known homozygous wild-type genotypes (F7W F7W ), and 5 dogs with bleeding at autopsy that tested positive for anticoagulant rodenticide and were genotyped as F7W F7W . All 67 cases tested homozygous for the wild-type allele, indicating that the common FVIID variant was not responsible for the observed unexplained bleeding. Our work demonstrates the usefulness of retrospective studies utilizing veterinary diagnostic laboratory databases and tissue archives for genetic studies. In the case of FVIID, our results suggest that a singular molecular test for the F71 variant is not a high-yield addition to postmortem screening in these scenarios. [ABSTRACT FROM AUTHOR]- Published
- 2022
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20. Does salinity mediate the toxicity of perfluorooctanesulfonic acid (PFOS) in an estuarine fish?
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Burcham, Lucy E., Hoskins, Tyler D., Allmon, Elizabeth B., Scherer, Meredith N., Bushong, Anna G., Hamilton, Matthew T., Macheri, Sini, Coogan, Grace S., Choi, Youn J., Lee, Linda S., and Sepúlveda, Maria S.
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PERFLUOROOCTANE sulfonate ,WATER salinization ,ESTUARINE fishes ,SALINITY ,FLUOROALKYL compounds - Abstract
Perfluorooctanesulfonic acid (PFOS) is detected in estuarine environments, where salinity levels fluctuate regularly. We investigated the effects of salinity on the toxicity of PFOS in embryos and larvae of Cyprinodon variegatus. We crossed six PFOS treatments (0, 1–10,000 μg/L) with two salinities (10, 30 ppt). Larvae exposed to the highest concentration of PFOS under high salinity accumulated over twice the amount of PFOS compared to larvae maintained under low salinity. Embryonic survival was unaffected by PFOS, salinity, or their interaction. PFOS delayed time to hatch and increased salinity reduced time to hatch regardless of PFOS treatment; however, no salinity by PFOS interactions were observed. Conversely, PFOS and salinity interacted in the larval stage, with decreased survival at 30 ppt salinity. This is one of the first studies evaluating interactive effects of PFOS and high salinity and highlights the importance of assessing PFAS toxicity across life stages. [Display omitted] • Salinity influences acute toxicity of PFOS in larval sheepshead minnows. • Embryonic survival was unaffected by PFOS, salinity, or their interaction. • Increasing salinity from 10 ppt to 30 ppt led to a decrease in the estimated LC 50. [ABSTRACT FROM AUTHOR]
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- 2024
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21. Building a Better Bear Trap? Examining Extrinsic Factors Influencing Trapping Success.
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Westing, Charlotte L., Skinner, John R., and Burcham, Milo G.
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This article, titled "Building a Better Bear Trap? Examining Extrinsic Factors Influencing Trapping Success," discusses the use of bucket cable traps and Aldrich snare sets in capturing black bears in coastal Alaska. The study aims to understand the factors that contribute to trapping success and differences in safety between the two techniques. The researchers found that bears engaged with bucket cable traps at a lower rate than with Aldrich snare sets but were equally likely to be successfully snared once engaged. Prebaiting sites increased capture success, and bear engagement with sets was higher during mid-day hours. Both trapping methods performed well within recommended safety standards. [Extracted from the article]
- Published
- 2023
22. Pharmaceutical Digital Design: From Chemical Structure through Crystal Polymorph to Conceptual Crystallization Process
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Burcham, Christopher L., Doherty, Michael F., Peters, Baron G., Price, Sarah L., Salvalaglio, Matteo, Reutzel-Edens, Susan M., Price, Louise S., Addula, Ravi Kumar Reddy, Francia, Nicholas, Khanna, Vikram, and Zhao, Yongsheng
- Abstract
A workflow for the digital design of crystallization processes starting from the chemical structure of the active pharmaceutical ingredient (API) is a multistep, multidisciplinary process. A simple version would be to first predict the API crystal structure and, from it, the corresponding properties of solubility, morphology, and growth rates, assuming that the nucleation would be controlled by seeding, and then use these parameters to design the crystallization process. This is usually an oversimplification as most APIs are polymorphic, and the most stable crystal of the API alone may not have the required properties for development into a drug product. This perspective, from the experience of a Lilly Digital Design project, considers the fundamental theoretical basis of crystal structure prediction (CSP), free energy, solubility, morphology, and growth rate prediction, and the current state of nucleation simulation. This is illustrated by applying the modeling techniques to real examples, olanzapine and succinic acid. We demonstrate the promise of using ab initio computer modeling for solid form selection and process design in pharmaceutical development. We also identify open problems in the application of current computational modeling and achieving the accuracy required for immediate implementation that currently limit the applicability of the approach.
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- 2024
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23. Desmoplastic stromal signatures predict patient outcomes in pancreatic ductal adenocarcinoma
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Mascharak, Shamik, Guo, Jason L., Foster, Deshka S., Khan, Anum, Davitt, Michael F., Nguyen, Alan T., Burcham, Austin R., Chinta, Malini S., Guardino, Nicholas J., Griffin, Michelle, Lopez, David M., Miller, Elisabeth, Januszyk, Michael, Raghavan, Shyam S., Longacre, Teri A., Delitto, Daniel J., Norton, Jeffrey A., and Longaker, Michael T.
- Abstract
Pancreatic ductal adenocarcinoma (PDAC) is projected to become the second leading cause of cancer-related death. Hallmarks include desmoplasia with variable extracellular matrix (ECM) architecture and a complex microenvironment with spatially defined tumor, stromal, and immune populations. Nevertheless, the role of desmoplastic spatial organization in patient/tumor variability remains underexplored, which we elucidate using two technologies. First, we quantify ECM patterning in 437 patients, revealing architectures associated with disease-free and overall survival. Second, we spatially profile the cellular milieu of 78 specimens using codetection by indexing, identifying an axis of pro-inflammatory cell interactions predictive of poorer outcomes. We discover that clinical characteristics, including neoadjuvant chemotherapy status, tumor stage, and ECM architecture, correlate with differential stromal-immune organization, including fibroblast subtypes with distinct niches. Lastly, we define unified signatures that predict survival with areas under the receiver operating characteristic curve (AUCs) of 0.872–0.903, differentiating survivorship by 655 days. Overall, our findings establish matrix ultrastructural and cellular organizations of fibrosis linked to poorer outcomes.
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- 2023
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24. Outliers in nutrient intake data for U.S. adults: national health and nutrition examination survey 2017–2018
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Burcham, Sara, Liu, Yuki, Merianos, Ashley L., and Mendy, Angelico
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- 2023
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25. Multimodal surveillance of SARS-CoV-2 at a university enables development of a robust outbreak response framework
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Petros, Brittany A., Paull, Jillian S., Tomkins-Tinch, Christopher H., Loftness, Bryn C., DeRuff, Katherine C., Nair, Parvathy, Gionet, Gabrielle L., Benz, Aaron, Brock-Fisher, Taylor, Hughes, Michael, Yurkovetskiy, Leonid, Mulaudzi, Shandukani, Leenerman, Emma, Nyalile, Thomas, Moreno, Gage K., Specht, Ivan, Sani, Kian, Adams, Gordon, Babet, Simone V., Baron, Emily, Blank, Jesse T., Boehm, Chloe, Botti-Lodovico, Yolanda, Brown, Jeremy, Buisker, Adam R., Burcham, Timothy, Chylek, Lily, Cronan, Paul, Dauphin, Ann, Desreumaux, Valentine, Doss, Megan, Flynn, Belinda, Gladden-Young, Adrianne, Glennon, Olivia, Harmon, Hunter D., Hook, Thomas V., Kary, Anton, King, Clay, Loreth, Christine, Marrs, Libby, McQuade, Kyle J., Milton, Thorsen T., Mulford, Jada M., Oba, Kyle, Pearlman, Leah, Schifferli, Mark, Schmidt, Madelyn J., Tandus, Grace M., Tyler, Andy, Vodzak, Megan E., Krohn Bevill, Kelly, Colubri, Andres, MacInnis, Bronwyn L., Ozsoy, A. Zeynep, Parrie, Eric, Sholtes, Kari, Siddle, Katherine J., Fry, Ben, Luban, Jeremy, Park, Daniel J., Marshall, John, Bronson, Amy, Schaffner, Stephen F., and Sabeti, Pardis C.
- Abstract
Universities are vulnerable to infectious disease outbreaks, making them ideal environments to study transmission dynamics and evaluate mitigation and surveillance measures. Here, we analyze multimodal COVID-19-associated data collected during the 2020–2021 academic year at Colorado Mesa University and introduce a SARS-CoV-2 surveillance and response framework.
- Published
- 2022
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26. Spatial risk modeling of cattle depredation by black vultures in the midwestern United States
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Quinby, Brandon M., Kluever, Bryan M., Burcham, Grant N., Humberg, Lee A., Jones, Landon R., Wahl, Marian L., and Zollner, Patrick A.
- Abstract
Negative economic impacts resulting from wildlife disrupting livestock operations through depredation of stock are a cause of human‐wildlife conflict. Management of such conflict requires identifying environmental and non‐environmental factors specific to a wildlife species' biology and ecology that influence the potential for livestock depredation to occur. Identification of such factors can improve understanding of the conditions placing livestock at risk. Black vultures (Coragyps atratus) have expanded their historical range northward into the midwestern United States. Concomitantly, an increase in concern among agricultural producers regarding potential black vulture attacks on livestock has occurred. We estimated area with greater or lesser potential for depredation of domestic cattle by black vultures across a 6‐state region in the midwestern United States using an ensemble of small models (ESM). Specifically, we identified landscape‐scale spatial factors, at a zip code resolution, associated with reported black vulture depredation on cattle in midwestern landscapes to predict future potential livestock depredation. We hypothesized that livestock depredation would be greatest in areas with intensive beef cattle production close to preferred black vulture habitat (e.g., areas with fewer old fields and early successional vegetation paired with more direct edge between older forest and agricultural lands). We predicted that the density of cattle within the county, habitat structure, and proximity to anthropogenic landscape features would be the strongest predictors of black vulture livestock‐depredation risk. Our ESM estimated the relative risk of black vulture‐cattle depredation to be between 0.154–0.631 across our entire study area. Consistent with our hypothesis, areas of greatest predicted risk of depredation correspond with locations that are favorable to vulture life‐history requirements and increased potential to encounter livestock. Our results allow wildlife managers the ability to predict where black vulture depredation of cattle is more likely to occur in the future. It is in these areas where extension and outreach efforts aimed at mitigating this conflict should be focused. Researchers and wildlife managers interested in developing or employing tools aimed at mitigating livestock‐vulture conflicts can also leverage our results to select areas where depredation is most likely to occur. We estimated potential wildlife‐livestock conflict risk between black vultures and domestic cattle across a 6‐state region in the midwestern United States using an ensemble of small models. Our study determined that the risk of black vulture‐cattle conflict corresponds with locations that are favorable to vulture life‐history requirements and increased potential to encounter livestock.
- Published
- 2022
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27. Edaravone for the Treatment of Motor Neurone Disease: A Critical Review of Approved and Alternative Formulations against a Proposed Quality Target Product Profile.
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O'Neill R, Yoo O, Burcham P, and Lim LY
- Abstract
Edaravone is one of two main drugs for treating motor neurone disease (MND). This review proposes a specific quality target product profile (QTPP) for edaravone following an appraisal of the issues accounting for the poor clinical uptake of the approved IV and oral liquid edaravone formulations. This is followed by a review of the alternative oral formulations of edaravone described in the published patent and journal literature against the QTPP. A total of 14 texts published by six research groups on 18 novel oral formulations of edaravone for the treatment of MND have been reviewed. The alternative oral formulations included liquid and solid formulations developed with cyclodextrins, lipids, surfactants, co-surfactants, alkalising agents, tablet excipients, and co-solvents. Most were intended to deliver edaravone for drug absorption in the lower gastrointestinal tract (GIT); however, there were also four formulations targeting the oral mucosal absorption of edaravone to avoid first-pass metabolism. All the novel formulations improved the aqueous solubility, stability, and oral bioavailability (BA) of edaravone compared to an aqueous suspension of edaravone. A common limitation of the published formulations is the lack of MND-patient-centred data. Except for TW001, no other formulations have been trialled in MND patients. To meet the QTPP of an oral edaravone formulation for MND patients, it is recommended that a tablet of appropriate size and with acceptable taste and stability be designed for the effective sublingual or buccal absorption of edaravone. This tablet should be designed with input from the MND community.
- Published
- 2024
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28. Role of reactive carbonyls and superoxide radicals in protein damage by cigarette smoke extracts: Comparison of Heat-not-Burn e-cigarettes to conventional cigarettes.
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Merritt N, Urquhart C, and Burcham P
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- Cattle, Animals, Hot Temperature, Superoxides metabolism, Protein Carbonylation drug effects, Smoke adverse effects, Serum Albumin, Bovine chemistry, Tobacco Products adverse effects, Electronic Nicotine Delivery Systems
- Abstract
Oxidative protein damage involving carbonylation of respiratory tract proteins typically accompanies exposure to tobacco smoke. Such damage can arise via multiple mechanisms, including direct amino acid oxidation by reactive oxygen species or protein adduction by electrophilic aldehydes. This study investigated the relative importance of these pathways during exposure of a model protein to fresh cigarette emission extracts. Briefly, protein carbonyl adducts were estimated in bovine serum albumin following incubation in buffered solutions with whole cigarette emissions extracts prepared from either a single 1R6F research cigarette or a single "Heat-not-Burn" e-cigarette. Although both extracts caused concentration-dependent protein carbonylation, conventional cigarette extracts produced higher adduct yields than e-cigarette extracts. Superoxide radical generation by conventional and e-cigarette emissions was assessed by monitoring nitro blue tetrazolium reduction and was considerably lower in extracts made from "Heat-Not-Burn" e-cigarettes. The superoxide dismutase/catalase mimic EUK-134 strongly suppressed radical production by whole smoke extracts from conventional cigarettes, however, it did not diminish protein carbonyl adduction when incubating smoke extracts with the model protein. In contrast, edaravone, a neuroprotective drug with strong carbonyl-trapping properties, strongly suppressed protein damage without inhibiting superoxide formation. Although these findings require extension to appropriate cell-based and in vivo systems, they suggest reactive aldehydes in tobacco smoke make greater contributions to oxidative protein damage than smoke phase radicals., Competing Interests: Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests:The e-cigarette device and HEEET sticks used in these studies were donated by the tobacco company Philip Morris. If there are other authors, they declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 The Authors. Published by Elsevier B.V. All rights reserved.)
- Published
- 2024
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