539 results on '"Harvey, JA"'
Search Results
2. Salvage definitive chemo-radiotherapy for locally recurrent oesophageal carcinoma after primary surgery: Retrospective review
- Author
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Baxi, SH, Burmeister, B, Harvey, JA, Smithers, M, and Thomas, J
- Published
- 2008
- Full Text
- View/download PDF
3. Some Metazoan Parasites from Marine Mammals Stranded in California
- Author
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Colón-Llavina, Marlene M., Mattiucci, Simonetta, Nascetti, Giuseppe, Harvey, James T., Williams, Ernest H., and Mignucci-Giannoni, Antonio A.
- Published
- 2019
4. Breast density changes in a randomized controlled trial evaluating bazedoxifene/conjugated estrogens.
- Author
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Harvey JA, Pinkerton JV, Baracat EC, Shi H, Chines AA, Mirkin S, Harvey, Jennifer A, Pinkerton, JoAnn V, Baracat, Edmund C, Shi, Harry, Chines, Arkadi A, and Mirkin, Sebastian
- Published
- 2013
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5. ACR Appropriateness Criteria(R) Stage I Breast Carcinoma.
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Huynh PT, Lemeshko SV, Mahoney MC, Newell MS, Bailey L, Barke LD, D'Orsi C, Harvey JA, Hayes MK, Jokich PM, Lee SJ, Lehman CD, Mainiero MB, Mankoff DA, Patel SB, Reynolds HE, Sutherland ML, and Haffty BG
- Abstract
Stage I breast carcinoma is classified when an invasive breast carcinoma is <=2 cm in diameter (T1), with no regional (axillary) lymph node metastases (N0) and no distant metastases (M0). The most common sites for metastases from breast cancer are the skeleton, lung, liver, and brain. In general, women and health care professionals prefer intensive screening and surveillance after a diagnosis of breast cancer. Screening protocols include conventional imaging such as chest radiography, bone scan, ultrasound of the liver, and MRI of brain. It is uncertain whether PET/CT will serve as a replacement for current imaging technologies. However, there are no survival or quality-of-life differences for women who undergo intensive screening and surveillance after a diagnosis of stage I breast carcinoma compared with those who do not. The ACR Appropriateness Criteria((R)) are evidence-based guidelines for specific clinical conditions that are reviewed every 2 years by a multidisciplinary expert panel. The guideline development and review include an extensive analysis of current medical literature from peer-reviewed journals and the application of a well-established consensus methodology (modified Delphi) to rate the appropriateness of imaging and treatment procedures by the panel. In those instances in which evidence is lacking or not definitive, expert opinion may be used to recommend imaging or treatment. [ABSTRACT FROM AUTHOR]
- Published
- 2012
- Full Text
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6. The Songs of Khayal by Nicolas Magriel (review)
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Bor, Joep and Harvey, Jane
- Published
- 2016
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7. The effects of bazedoxifene on mammographic breast density in postmenopausal women with osteoporosis.
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Harvey JA, Holm MK, Ranganath R, Guse PA, Trott EA, and Helzner E
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- 2009
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8. Histologic changes in the breast with menopausal hormone therapy use: correlation with breast density, estrogen receptor, progesterone receptor, and proliferation indices.
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Harvey JA, Santen RJ, Petroni GR, Bovbjerg VE, Smolkin ME, Sheriff FS, Russo J, Harvey, Jennifer A, Santen, Richard J, Petroni, Gina R, Bovbjerg, Viktor E, Smolkin, Mark E, Sheriff, Fathima S, and Russo, Jose
- Published
- 2008
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9. The art of diffusion capacity.
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Harvey JA
- Abstract
Determining diffusion capacity is one of the most complex procedures in the PFT laboratory and takes both technical skill and artistry to do it correctly. [ABSTRACT FROM AUTHOR]
- Published
- 2008
10. Understanding Rancière, Understanding Modernism ed. by Patrick M. Bray (review)
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Harvey, James
- Published
- 2018
11. Increase in Mammographic Breast Density Associated with the Use of Domperidone.
- Author
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Harvey JA, Cowan JH III, and Lorusso AP
- Published
- 2004
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12. Obituaries.
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Gilmore I, Richmond C, Mann JR, White RHR, Clarke J, Bown R, Harvey JA, Higgins MT, and Nunn J
- Published
- 2008
13. Antibody to endotoxin is associated with decreased frequency of postoperative infection
- Author
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Gould, FK, Harvey, JA, and Dytrych, JK
- Published
- 1989
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14. Host size overrides maternal effects on the development of a secondary hyperparasitoid wasp.
- Author
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Shi X, Gols R, de Boer JG, and Harvey JA
- Subjects
- Animals, Female, Pupa growth & development, Pupa parasitology, Wasps physiology, Wasps growth & development, Body Size, Host-Parasite Interactions
- Abstract
Unraveling the numerous factors that drive phenotypic variation in trait expression among animals has long presented a significant challenge. Whereas traits like growth and adult size are often heritable and are passed on from one generation to the next, these can be significantly affected by the quality and quantity of resources provided by one or both parents to their offspring. In many vertebrates, such as birds and mammals, parents raise their young until adult, providing food, shelter, and protection. On the other hand, in insects, there is often little or no parental care, and the young are left to fend for themselves. Despite that, some insects can enhance the growth of their offspring. In parasitoid wasps, for example, mothers inject biochemical factors, including venoms, teratocytes, and virus-like particles into the host that increase host quality by regulating the nutritional milieu. However, it is not known whether maternal size is positively correlated with host regulation. Here, we evaluate maternal and host size-related effects on the development of an asexually reproducing (= female only) secondary idiobiont ectoparasitoid, Gelis agilis on pre-pupae in cocoons of its host, the primary parasitoid, Cotesia glomerata. Females G. agilis from 2 adult size classes, "small" (mean 0.7 mg) or "large" (mean 1.2 mg), were allowed to parasitize cocoons of differing size along a continuum from ~1.2 mg to ~4.0 mg, and the body size and development time of their offspring were measured. In both body size classes of G. agilis mothers, there was a strong correlation between host size and offspring size. However, there was no effect of adult G. agilis size on this parameter: for a given host size, the size of G. agilis offspring did not differ between small and large mothers. Our results reveal that host quality is mostly pre-determined, irrespective of maternal size., (© The Author(s) 2025. Published by Oxford University Press on behalf of Entomological Society of America.)
- Published
- 2025
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15. Dermoscopic observation of Pthirus pubis.
- Author
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Fathizadeh S, Harvey JA, and Swanson DL
- Abstract
Competing Interests: None disclosed.
- Published
- 2024
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16. Climate change, temperature extremes, and impacts on hyperparasitoids.
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Segoli M, Kishinevsky M, and Harvey JA
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- Animals, Food Chain, Herbivory, Temperature, Climate Change, Insecta physiology, Insecta parasitology, Host-Parasite Interactions
- Abstract
Anthropogenic climate change, including temperature extremes, is having a major impact on insect physiology, phenology, behavior, populations, and communities. Hyperparasitoids (insects whose offspring develop in, or on, the body of a primary parasitoid host) are expected to be especially impacted by such effects due to their typical life history traits (e.g. low fecundity and slow development), small populations (being high on the food chain), and cascading effects mediated via lower trophic levels. We review evidence for direct and indirect temperature and climate-related effects mediated via plants, herbivores, and the primary parasitoid host species on hyperparasitoid populations, focusing on higher temperatures. We discuss how hyperparasitoid responses may feed back to the community and affect biological control programs. We conclude that despite their great importance, very little is known about the potential effects of climate change on hyperparasitoids and make a plea for additional studies exploring such responses., Competing Interests: Declaration of Competing Interest The authors 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 Elsevier Inc. All rights reserved.)
- Published
- 2024
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17. Reframing wildlife disease management problems with decision analysis.
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McEachran MC, Harvey JA, Mummah RO, Bletz MC, Teitelbaum CS, Rosenblatt E, Rudolph FJ, Arce F, Yin S, Prosser DJ, Mosher BA, Mullinax JM, DiRenzo GV, Couret J, Runge MC, Grant EHC, and Cook JD
- Subjects
- Animals, COVID-19 epidemiology, SARS-CoV-2, Uncertainty, Animals, Wild, Decision Support Techniques, Conservation of Natural Resources methods, Decision Making
- Abstract
Contemporary wildlife disease management is complex because managers need to respond to a wide range of stakeholders, multiple uncertainties, and difficult trade-offs that characterize the interconnected challenges of today. Despite general acknowledgment of these complexities, managing wildlife disease tends to be framed as a scientific problem, in which the major challenge is lack of knowledge. The complex and multifactorial process of decision-making is collapsed into a scientific endeavor to reduce uncertainty. As a result, contemporary decision-making may be oversimplified, rely on simple heuristics, and fail to account for the broader legal, social, and economic context in which the decisions are made. Concurrently, scientific research on wildlife disease may be distant from this decision context, resulting in information that may not be directly relevant to the pertinent management questions. We propose reframing wildlife disease management challenges as decision problems and addressing them with decision analytical tools to divide the complex problems into more cognitively manageable elements. In particular, structured decision-making has the potential to improve the quality, rigor, and transparency of decisions about wildlife disease in a variety of systems. Examples of management of severe acute respiratory syndrome coronavirus 2, white-nose syndrome, avian influenza, and chytridiomycosis illustrate the most common impediments to decision-making, including competing objectives, risks, prediction uncertainty, and limited resources., (© ([0‐9]+) Society for Conservation Biology.)
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- 2024
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18. Patient Experience of Women With Dense Breasts Undergoing Screening Contrast-Enhanced Mammography.
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Miller MM, Mayorov S, Ganti R, Nguyen JV, Rochman CM, Caley M, Jahjah J, Repich K, Patrie JT, Anderson RT, Harvey JA, and Rooney TB
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- Humans, Female, Middle Aged, Prospective Studies, Aged, Adult, Early Detection of Cancer methods, Surveys and Questionnaires, Breast diagnostic imaging, Radiographic Image Enhancement methods, Mass Screening methods, Mammography methods, Breast Neoplasms diagnostic imaging, Breast Neoplasms diagnosis, Contrast Media administration & dosage, Breast Density
- Abstract
Objective: We investigated patient experience with screening contrast-enhanced mammography (CEM) to determine whether a general population of women with dense breasts would accept CEM in a screening setting., Methods: In this institutional review board-approved prospective study, patients with heterogeneous and extremely dense breasts on their mammogram were invited to undergo screening CEM and complete pre-CEM and post-CEM surveys. On the pre-CEM survey, patients were asked about their attitudes regarding supplemental screening in general. On the post-CEM survey, patients were asked about their experience undergoing screening CEM, including causes and severity of any discomfort and whether they would consider undergoing screening CEM again in the future or recommend it to a friend., Results: One hundred sixty-three women were surveyed before and after screening CEM. Most patients, 97.5% (159/163), reported minimal or no unpleasantness associated with undergoing screening CEM. In addition, 91.4% (149/163) said they would probably or very likely undergo screening CEM in the future if it cost the same as a traditional screening mammogram, and 95.1% (155/163) said they would probably or very likely recommend screening CEM to a friend. Patients in this study, who were all willing to undergo CEM, more frequently reported a family history of breast cancer than a comparison cohort of women with dense breasts (58.2% vs 47.1%, P = .027)., Conclusion: Patients from a general population of women with dense breasts reported a positive experience undergoing screening CEM, suggesting screening CEM might be well received by this patient population, particularly if the cost was comparable with traditional screening mammography., (© Society of Breast Imaging 2024. All rights reserved. For commercial re-use, please contact reprints@oup.com for reprints and translation rights for reprints. All other permissions can be obtained through our RightsLink service via the Permissions link on the article page on our site—for further information please contact journals.permissions@oup.com.)
- Published
- 2024
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19. From Patients to Providers: Assessing Impact of Normothermic Machine Perfusion on Liver Transplant Practices in the US.
- Author
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Wang BK, Shubin AD, Harvey JA, MacConmara MM, Hwang CS, Patel MS, and Vagefi PA
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- Humans, Male, Female, Adult, Middle Aged, Aged, United States, End Stage Liver Disease, Perfusion, Treatment Outcome, Quality of Life, Tissue Donors statistics & numerical data, Liver Transplantation methods, Liver Transplantation statistics & numerical data, Liver surgery
- Abstract
Background: Normothermic machine perfusion (NMP) of livers allows for the expansion of the donor pool and minimization of posttransplant complications. Results to date have focused on both donor and recipient outcomes, but there remains potential for NMP to also impact transplant providers., Study Design: Using United Network for Organ Sharing Standard Transplant Analysis file data, adult deceased donors who underwent transplantation between January 1, 2016, and December 31, 2022, were identified. Transplanted livers were divided by preservation methods (static cold storage [SCS] and NMP) and case time (day-reperfusion 8 am to 6 pm ). Patient factors, transplant characteristics, and short-term outcomes were analyzed between Mahalanobis-metric-matched groups., Results: NMP livers represented 742 (1.4%) of 52,132 transplants. NMP donors were more marginal with higher Donor Risk Index scores (1.78 ± 0.50 NMP vs 1.49 ± 0.38 SCS, p < 0.001) and donation after cardiac death frequency (36.9% vs 8.4%, p < 0.001). NMP recipients more often had model for end-stage liver disease (MELD) exception status (29.9% vs 23.4%, p < 0.001), lower laboratory MELD scores (20.7 ± 9.7 vs 24.3 ± 10.9, p < 0.001), and had been waitlisted longer (111.5 [21.0 to 307.0] vs 60.0 [9.0 to 245.0] days, p < 0.001). One-year graft survival (90.2% vs 91.6%, p = 0.505) was similar between groups, whereas length of stay was lower for NMP recipients (8.0 [6.0 to 14.0] vs 10.0 [6.0 to 16.0], p = 0.017) after adjusting for confounders. Notably, peak case volume occurred at 11 am with NMP livers (vs 9 pm with SCS). Overall, a higher proportion of transplants was performed during daytime hours with NMP (51.5% vs 43.0%, p < 0.001)., Conclusions: NMP results in increased use of marginal allografts, which facilitated transplantation in lower laboratory MELD recipients who have been waitlisted longer and often have exception points. Importantly, NMP also appeared to shift peak caseloads from nighttime to daytime, which may have significant effects on the quality of life for the entire liver transplant team., (Copyright © 2024 by the American College of Surgeons. Published by Wolters Kluwer Health, Inc. All rights reserved.)
- Published
- 2024
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20. Cryptococcus neoforman s rapidly invades the murine brain by sequential breaching of airway and endothelial tissues barriers, followed by engulfment by microglia.
- Author
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Francis VI, Liddle C, Camacho E, Kulkarni M, Junior SRS, Harvey JA, Ballou ER, Thomson DD, Brown GD, Hardwick JM, Casadevall A, Witton J, and Coelho C
- Subjects
- Mice, Animals, Microglia, Brain microbiology, Mammals, Cryptococcus neoformans, Acquired Immunodeficiency Syndrome, Cryptococcosis microbiology, Meningitis
- Abstract
Cryptococcus neoformans causes lethal meningitis and accounts for approximately 10%-15% of AIDS-associated deaths worldwide. There are major gaps in our understanding of how this fungus invades the mammalian brain. To investigate the dynamics of C. neoformans tissue invasion, we mapped fungal localization and host cell interactions in infected brain, lung, and upper airways using mouse models of systemic and airway infection. To enable this, we developed an in situ imaging pipeline capable of measuring large volumes of tissue while preserving anatomical and cellular information by combining thick tissue sections, tissue clarification, and confocal imaging. We confirm high fungal burden in mouse upper airway after nasal inoculation. Yeast in turbinates were frequently titan cells, with faster kinetics than reported in mouse lungs. Importantly, we observed one instance of fungal cells enmeshed in lamina propria of the upper airways, suggesting penetration of airway mucosa as a possible route of tissue invasion and dissemination to the bloodstream. We extend previous literature positing bloodstream dissemination of C. neoformans , by finding viable fungi in the bloodstream of mice a few days after intranasal infection. As early as 24 h post systemic infection, the majority of C. neoformans cells traversed the blood-brain barrier, and were engulfed or in close proximity to microglia. Our work presents a new method for investigating microbial invasion, establishes that C. neoformans can breach multiple tissue barriers within the first days of infection, and demonstrates microglia as the first cells responding to C. neoformans invasion of the brain.IMPORTANCECryptococcal meningitis causes 10%-15% of AIDS-associated deaths globally. Still, brain-specific immunity to cryptococci is a conundrum. By employing innovative imaging, this study reveals what occurs during the first days of infection in brain and in airways. We found that titan cells predominate in upper airways and that cryptococci breach the upper airway mucosa, which implies that, at least in mice, the upper airways are a site for fungal dissemination. This would signify that mucosal immunity of the upper airway needs to be better understood. Importantly, we also show that microglia, the brain-resident macrophages, are the first responders to infection, and microglia clusters are formed surrounding cryptococci. This study opens the field to detailed molecular investigations on airway immune response, how fungus traverses the blood-brain barrier, how microglia respond to infection, and ultimately how microglia monitor the blood-brain barrier to preserve brain function., Competing Interests: The authors declare no conflict of interest.
- Published
- 2024
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21. Quest for Multifunctionality: Current Progress in the Characterization of Heterometallic Metal-Organic Frameworks.
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Sikma RE, Butler KS, Vogel DJ, Harvey JA, and Sava Gallis DF
- Abstract
Metal-organic frameworks (MOFs) are a class of porous, crystalline materials that have been systematically developed for a broad range of applications. Incorporation of two or more metals into a single crystalline phase to generate heterometallic MOFs has been shown to lead to synergistic effects, in which the whole is oftentimes greater than the sum of its parts. Because geometric proximity is typically required for metals to function cooperatively, deciphering and controlling metal distributions in heterometallic MOFs is crucial to establish structure-function relationships. However, determination of short- and long-range metal distributions is nontrivial and requires the use of specialized characterization techniques. Advancements in the characterization of metal distributions and interactions at these length scales is key to rapid advancement and rational design of functional heterometallic MOFs. This perspective summarizes the state-of-the-art in the characterization of heterometallic MOFs, with a focus on techniques that allow metal distributions to be better understood. Using complementary analyses, in conjunction with computational methods, is critical as this field moves toward increasingly complex, multifunctional systems.
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- 2024
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22. The Breast-Imaging Operations, Practices and Systems Inventory: A framework to examine mammography facility effects on screening in rural communities.
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Anderson RT, Hillemeier MM, Camacho FT, Harvey JA, Bonilla G, Batten GP, Robinson B, Safon CB, and Louis C
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- Aged, United States, Humans, Female, Rural Population, Mammography, Appalachian Region, Kentucky, Early Detection of Cancer, Mass Screening, Medicare, Breast Neoplasms diagnostic imaging
- Abstract
Purpose: Develop and test a measurement framework of mammogram facility resources, policies, and practices in Appalachia., Methods: Survey items describing 7 domains of imaging facility qualities were developed and tested in the Appalachian regions of Kentucky, Ohio, Pennsylvania, Virginia, and West Virginia. Medicare claims data (2016-2018) were obtained on catchment area mammogram services. Construct validity was examined from associations with facility affiliation, community characteristics, mammogram screening uptake, and market reach. Analyses were performed with t-tests and ANOVA., Results: A total of 192 (of 377) sites completed the survey. Five factors were initially selected in exploratory factor analysis (FA) and refined in confirmatory FA: capacity, outreach & marketing, operational support, radiology review (NNFI = .94, GFI = 0.93), and diagnostic services (NNFI = 1.00, GFI = 0.99). Imaging capacity and diagnostic services were associated with screening uptake, with capacity strongly associated with catchment area demographic and economic characteristics. Imaging facilities in economically affluent versus poorer areas belong to larger health systems and have significantly more resources (P < .001). Facilities in economically distressed locations in Appalachia rely more heavily on outreach activities (P < .001). Higher facility capacity was significantly associated (P < .05) with larger catchment area size (median split: 48.5 vs 51.6), mammogram market share (47.4 vs 52.7), and screening uptake (47.6 vs 52.4)., Conclusions: A set of 18 items assessing breast imaging services and facility characteristics was obtained, representing policies and practices related to a facility's catchment area size, market share, and mammogram screening uptake., (© 2023 The Authors. The Journal of Rural Health published by Wiley Periodicals LLC on behalf of National Rural Health Association.)
- Published
- 2024
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23. Urban living can rescue Darwin's finches from the lethal effects of invasive vampire flies.
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Knutie SA, Webster CN, Vaziri GJ, Albert L, Harvey JA, LaRue M, Verrett TB, Soldo A, Koop JAH, Chaves JA, and Wegrzyn JL
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- Animals, Humans, Ecuador, Finches parasitology, Muscidae, Parasites
- Abstract
Human activity changes multiple factors in the environment, which can have positive or negative synergistic effects on organisms. However, few studies have explored the causal effects of multiple anthropogenic factors, such as urbanization and invasive species, on animals and the mechanisms that mediate these interactions. This study examines the influence of urbanization on the detrimental effect of invasive avian vampire flies (Philornis downsi) on endemic Darwin's finches in the Galápagos Islands. We experimentally manipulated nest fly abundance in urban and non-urban locations and then characterized nestling health, fledging success, diet, and gene expression patterns related to host defense. Fledging success of non-parasitized nestlings from urban (79%) and non-urban (75%) nests did not differ significantly. However, parasitized, non-urban nestlings lost more blood, and fewer nestlings survived (8%) compared to urban nestlings (50%). Stable isotopic values (δ
15 N) from urban nestling feces were higher than those from non-urban nestlings, suggesting that urban nestlings are consuming more protein. δ15 N values correlated negatively with parasite abundance, which suggests that diet might influence host defenses (e.g., tolerance and resistance). Parasitized, urban nestlings differentially expressed genes within pathways associated with red blood cell production (tolerance) and pro-inflammatory response (innate immunological resistance), compared to parasitized, non-urban nestlings. In contrast, parasitized non-urban nestlings differentially expressed genes within pathways associated with immunoglobulin production (adaptive immunological resistance). Our results suggest that urban nestlings are investing more in pro-inflammatory responses to resist parasites but also recovering more blood cells to tolerate blood loss. Although non-urban nestlings are mounting an adaptive immune response, it is likely a last effort by the immune system rather than an effective defense against avian vampire flies since few nestlings survived., (© 2024 John Wiley & Sons Ltd.)- Published
- 2024
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24. Embracing Remote Academic Radiologists.
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Oppenheimer DC, Mohajeri S, Proffitt EK, Shiau MC, and Harvey JA
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- Humans, Radiologists, Health Facilities, Radiology
- Abstract
Over the past two years at our large academic center, we successfully developed a formal remote academic radiologist division - composed of permanent fully remote radiologists across multiple subspecialties, living geographically distant from our institution. In this article, we share our experience implementing a remote radiologist division, review the benefits and challenges of this approach, discuss expectations of academic remote radiologists as clinicians, educators, and scholars, and provide tips for success., Competing Interests: Declaration of Competing Interest The authors 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 © 2023 The Association of University Radiologists. Published by Elsevier Inc. All rights reserved.)
- Published
- 2024
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25. Cryptococcus neoformans rapidly invades the murine brain by sequential breaching of airway and endothelial tissues barriers, followed by engulfment by microglia.
- Author
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Francis VI, Liddle C, Camacho E, Kulkarni M, Junior SRS, Harvey JA, Ballou ER, Thomson DD, Hardwick JM, Casadevall A, Witton J, and Coelho C
- Abstract
The fungus Cryptococcus neoformans causes lethal meningitis in humans with weakened immune systems and is estimated to account for 10-15% of AIDS-associated deaths worldwide. There are major gaps in our understanding of how this environmental fungus evades the immune system and invades the mammalian brain before the onset of overt symptoms. To investigate the dynamics of C. neoformans tissue invasion, we mapped early fungal localisation and host cell interactions at early times in infected brain, lung, and upper airways using mouse models of systemic and airway infection. To enable this, we developed an in situ imaging pipeline capable of measuring large volumes of tissue while preserving anatomical and cellular information by combining thick tissue sections, tissue clarification, and confocal imaging. Made possible by these techniques, we confirm high fungal burden in mouse upper airway turbinates after nasal inoculation. Surprisingly, most yeasts in turbinates were titan cells, indicating this microenvironment enables titan cell formation with faster kinetics than reported in mouse lungs. Importantly, we observed one instance of fungal cells enmeshed in lamina propria of upper airways, suggesting penetration of airway mucosa as a possible route of tissue invasion and dissemination to the bloodstream. We extend previous literature positing bloodstream dissemination of C. neoformans , via imaging C. neoformans within blood vessels of mouse lungs and finding viable fungi in the bloodstream of mice a few days after intranasal infection, suggesting that bloodstream access can occur via lung alveoli. In a model of systemic cryptococcosis, we show that as early as 24 h post infection, majority of C. neoformans cells traversed the blood-brain barrier, and are engulfed or in close proximity to microglia. Our work establishes that C. neoformans can breach multiple tissue barriers within the first days of infection. This work presents a new method for investigating cryptococcal invasion mechanisms and demonstrates microglia as the primary cells responding to C. neoformans invasion.
- Published
- 2023
- Full Text
- View/download PDF
26. Remote Radiology: Point-Enhance Efficiency, Promote Work-Life Balance, and Ameliorate Staffing Issues.
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Oppenheimer DC and Harvey JA
- Subjects
- Humans, Radiography, Workforce, Personnel Staffing and Scheduling, Work-Life Balance, Radiology
- Published
- 2023
- Full Text
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27. Machine Learning Predictions of Simulated Self-Diffusion Coefficients for Bulk and Confined Pure Liquids.
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Leverant CJ, Greathouse JA, Harvey JA, and Alam TM
- Abstract
Diffusion properties of bulk fluids have been predicted using empirical expressions and machine learning (ML) models, suggesting that predictions of diffusion also should be possible for fluids in confined environments. The ability to quickly and accurately predict diffusion in porous materials would enable new discoveries and spur development in relevant technologies such as separations, catalysis, batteries, and subsurface applications. In this work, we apply artificial neural network (ANN) models to predict the simulated self-diffusion coefficients of real liquids in both bulk and pore environments. The training data sets were generated from molecular dynamics (MD) simulations of Lennard-Jones particles representing a diverse set of 14 molecules ranging from ammonia to dodecane over a range of liquid pressures and temperatures. Planar, cylindrical, and hexagonal pore models consisted of walls composed of carbon atoms. Our simple model for these liquids was primarily used to generate ANN training data, but the simulated self-diffusion coefficients of bulk liquids show excellent agreement with experimental diffusion coefficients. ANN models based on simple descriptors accurately reproduced the MD diffusion data for both bulk and confined liquids, including the trend of increased mobility in large pores relative to the corresponding bulk liquid.
- Published
- 2023
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28. The Future Is in the Details, and a Farewell.
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Harvey JA
- Published
- 2023
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29. Climate Change, Extreme Temperatures and Sex-Related Responses in Spiders.
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Harvey JA and Dong Y
- Abstract
Climatic extremes, such as heat waves, are increasing in frequency, intensity and duration under anthropogenic climate change. These extreme events pose a great threat to many organisms, and especially ectotherms, which are susceptible to high temperatures. In nature, many ectotherms, such as insects, may seek cooler microclimates and 'ride out´ extreme temperatures, especially when these are transient and unpredictable. However, some ectotherms, such as web-building spiders, may be more prone to heat-related mortality than more motile organisms. Adult females in many spider families are sedentary and build webs in micro-habitats where they spend their entire lives. Under extreme heat, they may be limited in their ability to move vertically or horizontally to find cooler microhabitats. Males, on the other hand, are often nomadic, have broader spatial distributions, and thus might be better able to escape exposure to heat. However, life-history traits in spiders such as the relative body size of males and females and spatial ecology also vary across different taxonomic groups based on their phylogeny. This may make different species or families more or less susceptible to heat waves and exposure to very high temperatures. Selection to extreme temperatures may drive adaptive responses in female physiology, morphology or web site selection in species that build small or exposed webs. Male spiders may be better able to avoid heat-related stress than females by seeking refuge under objects such as bark or rocks with cooler microclimates. Here, we discuss these aspects in detail and propose research focusing on male and female spider behavior and reproduction across different taxa exposed to temperature extremes.
- Published
- 2023
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30. The influence of dermoscopy education over 14 years at a single institution: A retrospective cohort study.
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Harvey JA, Smith JF, Berry NA, Butterfield RJ, Nelson SA, and Swanson DL
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- Humans, Retrospective Studies, Dermoscopy education, Educational Status, Skin Neoplasms diagnosis, Melanoma
- Abstract
Competing Interests: Conflicts of interest None disclosed.
- Published
- 2023
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31. Many parasitoids lack adult fat accumulation, despite fatty acid synthesis: A discussion of concepts and considerations for future research.
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Visser B, Le Lann C, Hahn DA, Lammers M, Nieberding CM, Alborn HT, Enriquez T, Scheifler M, Harvey JA, and Ellers J
- Abstract
Fat reserves, specifically the accumulation of triacylglycerols, are a major energy source and play a key role for life histories. Fat accumulation is a conserved metabolic pattern across most insects, yet in most parasitoid species adults do not gain fat mass, even when nutrients are readily available and provided ad libitum . This extraordinary physiological phenotype has evolved repeatedly in phylogenetically dispersed parasitoid species. This poses a conundrum because it could lead to significant constraints on energy allocation toward key adult functions such as survival and reproduction. Recent work on the underlying genetic and biochemical mechanisms has spurred a debate on fat accumulation versus fat production, because of incongruent interpretation of results obtained using different methodologies. This debate is in part due to semantics, highlighting the need for a synthetic perspective on fat accumulation that reconciles previous debates and provides new insights and terminology. In this paper, we propose updated, unambiguous terminology for future research in the field, including "fatty acid synthesis" and "lack of adult fat accumulation", and describe the distinct metabolic pathways involved in the complex process of lipogenesis. We then discuss the benefits and drawbacks of the main methods available to measure fatty acid synthesis and adult fat accumulation. Most importantly, gravimetric/colorimetric and isotope tracking methods give complementary information, provided that they are applied with appropriate controls and interpreted correctly. We also compiled a comprehensive list of fat accumulation studies performed during the last 25 years. We present avenues for future research that combine chemistry, ecology, and evolution into an integrative approach, which we think is needed to understand the dynamics of fat accumulation in parasitoids., Competing Interests: The authors declare no financial conflicts associated with this research. Daniel A. Hahn is an Editorial Board member of Current Research in Insect Science. Dr. Hahn had no involvement in the evaluation or peer review of this manuscript and has no access to information regarding its peer review., (© 2023 The Authors. Published by Elsevier B.V.)
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- 2023
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32. Factors Associated With Breast Cancer Screening Behaviors Among Women With Dense Breasts.
- Author
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Miller MM, Ganti R, Repich K, Patrie JT, Anderson RT, and Harvey JA
- Subjects
- Female, Humans, Middle Aged, Breast Density, Mammography methods, Early Detection of Cancer methods, Mass Screening methods, Breast Neoplasms diagnosis
- Abstract
Objective: We sought to identify patient factors associated with patient-reported screening behaviors in women with dense breasts., Methods: An IRB-approved survey study of women with dense breasts presenting for annual screening mammography at an outpatient imaging center was previously conducted from March 2017 to February 2018. The survey included questions regarding mammographic screening frequency and recent participation in supplemental screening. These survey data were combined post hoc with clinical and demographic data and socioeconomic data imputed from census data. Logistic regression was used to identify patient factors associated with reported screening behaviors., Results: Surveys were completed by 508 women (median age, 59.0 years; range, 31.0-86.0 years) with dense breasts. Multivariable analysis demonstrated an independent association of undergoing mammographic screening annually with a history of discussing breast density with a doctor (adjusted odds ratio [AOR], 2.60; P = 0.019). Undergoing supplemental screening in the previous three years was independently associated with younger age (AOR, 1.59; P = 0.004), strong family history of breast cancer (AOR, 3.84; P = 0.027), higher perceived personal risk for breast cancer (AOR, 3.47; P = 0.004), and increased concern about radiation associated with screening examinations (AOR, 3.31; P = 0.006)., Conclusion: Women with dense breasts who had discussed breast density with a doctor were more likely to report undergoing annual screening mammography, while younger women and women with a strong family history of breast cancer, higher perceived personal risk for breast cancer, or greater concern about radiation were more likely to report recently undergoing supplemental screening., (© Society of Breast Imaging 2023. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.)
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- 2023
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33. Using a "Wide Lens".
- Author
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Harvey JA
- Subjects
- Contact Lenses, Lens, Crystalline
- Published
- 2023
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34. Broadening Our Perspective of Health Care Inequities.
- Author
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Harvey JA
- Subjects
- Health Inequities, Health Services Accessibility
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- 2023
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35. Online symptom checkers lack diagnostic accuracy for skin rashes.
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Berry NA, Harvey JA, Pittelkow MR, Swanson DL, and Yang YW
- Subjects
- Humans, Triage, Exanthema diagnosis, Exanthema etiology
- Abstract
Competing Interests: Conflicts of interest None disclosed.
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- 2023
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36. The Biology and Ecology of Parasitoid Wasps of Predatory Arthropods.
- Author
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Fei M, Gols R, and Harvey JA
- Subjects
- Animals, Ecology, Food Chain, Predatory Behavior physiology, Wasps physiology, Coleoptera physiology, Aphids physiology, Spiders
- Abstract
Parasitoid wasps are important components of insect food chains and have played a central role in biological control programs for over a century. Although the vast majority of parasitoids exploit insect herbivores as hosts, others parasitize predatory insects and arthropods, such as ladybird beetles, hoverflies, lacewings, ground beetles, and spiders, or are hyperparasitoids. Much of the research on the biology and ecology of parasitoids of predators has focused on ladybird beetles, whose parasitoids may interfere with the control of insect pests like aphids by reducing ladybird abundance. Alternatively, parasitoids of the invasive ladybird Harmonia axyridis may reduce its harmful impact on native ladybird populations. Different life stages of predatory insects and spiders are susceptible to parasitism to different degrees. Many parasitoids of predators exhibit intricate physiological interrelationships with their hosts, adaptively manipulating host behavior, biology, and ecology in ways that increase parasitoid survival and fitness.
- Published
- 2023
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37. Soil legacy effects of plants and drought on aboveground insects in native and range-expanding plant communities.
- Author
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Li K, Veen GFC, Ten Hooven FC, Harvey JA, and van der Putten WH
- Subjects
- Animals, Droughts, Insecta, Biomass, Plants, Ecosystem, Soil, Aphids
- Abstract
Soils contain biotic and abiotic legacies of previous conditions that may influence plant community biomass and associated aboveground biodiversity. However, little is known about the relative strengths and interactions of the various belowground legacies on aboveground plant-insect interactions. We used an outdoor mesocosm experiment to investigate the belowground legacy effects of range-expanding versus native plants, extreme drought and their interactions on plants, aphids and pollinators. We show that plant biomass was influenced more strongly by the previous plant community than by the previous summer drought. Plant communities consisted of four congeneric pairs of natives and range expanders, and their responses were not unanimous. Legacy effects affected the abundance of aphids more strongly than pollinators. We conclude that legacies can be contained as soil 'memories' that influence aboveground plant community interactions in the next growing season. These soil-borne 'memories' can be altered by climate warming-induced plant range shifts and extreme drought., (© 2022 The Authors. Ecology Letters published by John Wiley & Sons Ltd.)
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- 2023
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38. Factors associated with perceived personal risk for breast cancer among women with dense breasts.
- Author
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Miller MM, Vasiliadis T, Rochman CM, Repich K, Patrie JT, Anderson RT, and Harvey JA
- Subjects
- Humans, Female, Middle Aged, Breast Density, Early Detection of Cancer, Breast diagnostic imaging, Mass Screening, Risk Factors, Mammography, Breast Neoplasms diagnostic imaging, Breast Neoplasms epidemiology
- Abstract
Purpose: To determine what patient factors are associated with a high or an accurate perceived personal risk (PPR) for breast cancer., Methods: An IRB-approved survey study of women with dense breasts presenting for annual screening mammography was previously conducted from March 2017 to February 2018. Patients were asked to estimate their personal risk for breast cancer and to answer questions about prior breast care-related medical interactions. Survey data were combined post hoc with demographic and clinical data, including breast cancer risk status, and socioeconomic data imputed for each patient from census data. Logistic regression was used to determine which patient factors were associated with a high or accurate PPR., Results: Surveys were completed by 508 women with dense breasts (median age 59.0 years). A high PPR was independently associated with younger age (AOR, 1.71 [95% CI, 1.13, 2.60]), family history of breast cancer (AOR 4.27 [95% CI, 2.81-7.34]), having a clinical "high-risk" designation (AOR, 3.43 [95% CI, 1.13-10.39], and having been called back from screening (AOR, 1.94 [95% CI, 1.14-3.32]). A lower accuracy of PPR was independently associated with a family history of breast cancer (AOR, 0.25 [95% CI, 0.14-0.42]) and having been called back from screening (AOR, 0.58 [95% CI, 0.35-0.98])., Conclusion: Women with dense breasts who had a family history of breast cancer or who had been called back from screening had a higher but less accurate PPR. Women with a "high-risk" clinical designation had a higher PPR, even when controlling for family history., Competing Interests: Declaration of competing interest This study was conducted with funding support from the Charlottesville Women’s Four Miler Program., (Copyright © 2022 Elsevier Inc. All rights reserved.)
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- 2023
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39. Characteristics of Matched vs Nonmatched Dermatology Applicants.
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Harvey JA, Costello C, Besch-Stokes J, Bhullar P, DiCaudo DJ, Tollefson MM, Tolaymat LM, and Ochoa S
- Subjects
- Humans, United States, Surveys and Questionnaires, Florida, Minnesota, Internship and Residency, Dermatology
- Abstract
Dermatology residency continues to be one of the most competitive specialties, with a match rate of 84.7% in 2019. We surveyed 475 dermatology applicants who applied to the Mayo Clinic in Scottsdale, Arizona, during the 2018-2019 application cycle and 629 dermatology applicants who applied to the Mayo Clinic in Scottsdale; Rochester, Minnesota; and Jacksonville, Florida, during the 2019-2020 application cycle. The initial survey obtained application and demographic information. The follow-up survey obtained match data. The initial 2019 and 2020 surveys were completed by 149 and 142 dermatology applicants, respectively, and 112 and 124 applicants completed the respective follow-up surveys. Our survey finds that factors associated with matching included a higher US Medical Licensing Examination (USMLE) Step 1 score, having a home dermatology program, and a higher number of interviews offered and attended. Some demographics had varying USMLE Step 1 scores but similar match rates.
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- 2023
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40. Practical Steps to Writing a Scientific Manuscript.
- Author
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Grimm LJ and Harvey JA
- Subjects
- Writing, Radiology
- Abstract
Writing a scientific manuscript can be a very intimidating process for new writers. However, writing a scientific research article can be broken down into discrete steps to make the process more digestible. Radiology manuscripts have common conventions that differ from research in technical and other medical fields. The practical steps summarized within describe what to do before you start writing, successful writing strategies, and common writing styles. Templates for producing an abstract, introduction, methods, results, and discussion are outlined, along with tips to collect references and produce high quality figures. All writers can benefit from an outside writing perspective, and the practical steps described should ease the transition from a blank page to a finished manuscript., (© Society of Breast Imaging 2022. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.)
- Published
- 2022
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41. Breast Radiologists as Clinicians.
- Author
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Harvey JA
- Subjects
- Humans, Breast diagnostic imaging, Radiologists
- Published
- 2022
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42. Trends in Siting of Metals in Heterometallic Nd-Yb Metal-Organic Frameworks and Molecular Crystals.
- Author
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Ibikunle IA, Yang Y, Valdez NR, Rodriguez MA, Harvey JA, Sava Gallis DF, and Sholl DS
- Abstract
Several studies suggest that metal ordering within metal-organic frameworks (MOFs) is important for understanding how MOFs behave in relevant applications; however, these siting trends can be difficult to determine experimentally. To garner insight into the energetic driving forces that may lead to nonrandom ordering within heterometallic MOFs, we employ density functional theory (DFT) calculations on several bimetallic metal-organic crystals composed of Nd and Yb metal atoms. We also investigate the metal siting trends for a newly synthesized MOF. Our DFT-based energy of mixing results suggest that Nd will likely occupy sites with greater access to electronegative atoms and that local homometallic domains within a mixed-metal Nd-Yb system are favored. We also explore the use of less computationally extensive methods such as classical force fields and cluster expansion models to understand their feasibility for large system sizes. This study highlights the impact of metal ordering on the energetic stability of heterometallic MOFs and crystal structures.
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- 2022
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43. The Evolution of BI-RADS 3.
- Author
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Harvey JA
- Published
- 2022
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44. Abbreviated Breast MRI Utilization: A Survey of the Society of Breast Imaging.
- Author
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Grimm LJ, Conant EF, Dialani VM, Dontchos BN, Harvey JA, Kacharia VS, Plecha DM, and Mango VL
- Subjects
- Female, Humans, Surveys and Questionnaires, Breast diagnostic imaging, Magnetic Resonance Imaging methods
- Abstract
Objective: To survey Society of Breast Imaging (SBI) membership on their use of abbreviated breast MRI to understand variability in practice patterns., Methods: A survey was developed by the SBI Patient Care and Delivery committee for distribution to SBI membership in July and August 2021. Eighteen questions queried practice demographics and then abbreviated breast MRI practices regarding initial adoption, scheduling and finances, MRI protocols, and interpretations. Comparisons between responses were made by practice demographics., Results: There were 321 respondents (response rate: 15.3%), of whom 25% (81/321) currently offer and 26% (84/321) plan to offer abbreviated breast MRI. Practices in the South (37/107, 35%) and Midwest (22/70, 31%) were more likely to offer abbreviated MRI (P = 0.005). Practices adopted many strategies to raise awareness, most directed at referring providers. The mean charge to patients was $414, and only 6% of practices offer financial support. The median time slot for studies is 20 minutes, with only 15% of practices using block scheduling of consecutive breast MRIs. Regarding MRI protocols, 64% (37/58) of respondents included only a single first-pass post-contrast sequence, and 90% (52/58) included T2-weighted sequences. Patient eligibility was highly varied, and a majority of respondents (37/58, 64%) do not provide any recommendations for screening intervals in non-high-risk women., Conclusion: Abbreviated breast MRI utilization is growing rapidly, and practices are applying a variety of strategies to facilitate adoption. Although there is notable variability in patient eligibility, follow-up intervals, and costs, there is some agreement regarding abbreviated breast MRI protocols., (© Society of Breast Imaging 2022. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.)
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- 2022
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45. Patient Use of Physicians' First (Given) Name in Direct Patient Electronic Messaging.
- Author
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Harvey JA, Butterfield RJ, Ochoa SA, and Yang YW
- Subjects
- Electronic Mail, Electronics, Humans, Physicians
- Published
- 2022
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46. Dramatic Enhancement of Rare-Earth Metal-Organic Framework Stability Via Metal Cluster Fluorination.
- Author
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Christian MS, Fritzsching KJ, Harvey JA, Sava Gallis DF, Nenoff TM, and Rimsza JM
- Abstract
Rare-earth polynuclear metal-organic frameworks (RE-MOFs) have demonstrated high durability for caustic acid gas adsorption and separation based on gas adsorption to the metal clusters. The metal clusters in the RE-MOFs traditionally contain RE metals bound by μ
3 -OH groups connected via organic linkers. Recent studies have suggested that these hydroxyl groups could be replaced by fluorine atoms during synthesis that includes a fluorine-containing modulator. Here, a combined modeling and experimental study was undertaken to elucidate the role of metal cluster fluorination on the thermodynamic stability, structure, and gas adsorption properties of RE-MOFs. Through systematic density-functional theory calculations, fluorinated clusters were found to be thermodynamically more stable than hydroxylated clusters by up to 8-16 kJ/mol per atom for 100% fluorination. The extent of fluorination in the metal clusters was validated through a19 F NMR characterization of 2,5-dihydroxyterepthalic acid (Y-DOBDC) MOF synthesized with a fluorine-containing modulator.19 F magic-angle spinning NMR identified two primary peaks in the isotropic chemical shift (δiso ) spectra located at -64.2 and -69.6 ppm, matching calculated19 F NMR δiso peaks at -63.0 and -70.0 ppm for fluorinated systems. Calculations also indicate that fluorination of the Y-DOBDC MOF had negligible effects on the acid gas (SO2 , NO2 , H2 O) binding energies, which decreased by only ∼4 kJ/mol for the 100% fluorinated structure relative to the hydroxylated structure. Additionally, fluorination did not change the relative gas binding strengths (SO2 > H2 O > NO2 ). Therefore, for the first time the presence of fluorine in the metal clusters was found to significantly stabilize RE-MOFs without changing their acid-gas adsorption properties., Competing Interests: The authors declare no competing financial interest., (© 2022 The Authors. Published by American Chemical Society.)- Published
- 2022
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47. Radiation doses and fractionation schedules in non-low-risk ductal carcinoma in situ in the breast (BIG 3-07/TROG 07.01): a randomised, factorial, multicentre, open-label, phase 3 study.
- Author
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Chua BH, Link EK, Kunkler IH, Whelan TJ, Westenberg AH, Gruber G, Bryant G, Ahern V, Purohit K, Graham PH, Akra M, McArdle O, O'Brien P, Harvey JA, Kirkove C, Maduro JH, Campbell ID, Delaney GP, Martin JD, Vu TTT, Muanza TM, Neal A, and Olivotto IA
- Subjects
- Canada, Dose Fractionation, Radiation, Female, Humans, Mastectomy, Segmental, Neoplasm Recurrence, Local etiology, Neoplasm Staging, Radiation Dosage, Breast Neoplasms etiology, Breast Neoplasms radiotherapy, Breast Neoplasms surgery, Carcinoma, Intraductal, Noninfiltrating radiotherapy, Carcinoma, Intraductal, Noninfiltrating surgery
- Abstract
Background: Whole breast irradiation (WBI) after conservative surgery for ductal carcinoma in situ (DCIS) reduces local recurrence. We investigated whether a tumour bed boost after WBI improved outcomes, and examined radiation dose fractionation sensitivity for non-low-risk DCIS., Methods: The study was an international, randomised, unmasked, phase 3 trial involving 136 participating centres of six clinical trials organisations in 11 countries (Australia, New Zealand, Singapore, Canada, the Netherlands, Belgium, France, Switzerland, Italy, Ireland, and the UK). Eligible patients were women aged 18 years or older with unilateral, histologically proven, non-low-risk DCIS treated by breast-conserving surgery with at least 1 mm of clear radial resection margins. They were assigned to one of four groups (1:1:1:1) of no tumour bed boost versus boost after conventional versus hypofractionated WBI, or randomly assigned to one of two groups (1:1) of no boost versus boost after each centre prespecified conventional or hypofractionated WBI. The conventional WBI used was 50 Gy in 25 fractions, and hypofractionated WBI was 42·5 Gy in 16 fractions. A boost dose of 16 Gy in eight fractions, if allocated, was delivered after WBI. Patients and clinicians were not masked to treatment allocation. The primary endpoint was time to local recurrence. This trial is registered with ClinicalTrials.gov (NCT00470236)., Findings: Between June 25, 2007, and June 30, 2014, 1608 patients were randomly assigned to have no boost (805 patients) or boost (803 patients). Conventional WBI was given to 831 patients, and hypofractionated WBI was given to 777 patients. Median follow-up was 6·6 years. The 5-year free-from-local-recurrence rates were 92·7% (95% CI 90·6-94·4%) in the no-boost group and 97·1% (95·6-98·1%) in the boost group (hazard ratio 0·47; 0·31-0·72; p<0·001). The boost group had higher rates of grade 2 or higher breast pain (10% [8-12%] vs 14% [12-17%], p=0·003) and induration (6% [5-8%] vs 14% [11-16%], p<0·001)., Interpretation: In patients with resected non-low-risk DCIS, a tumour bed boost after WBI reduced local recurrence with an increase in grade 2 or greater toxicity. The results provide the first randomised trial data to support the use of boost radiation after postoperative WBI in these patients to improve local control. The international scale of the study supports the generalisability of the results., Funding: National Health and Medical Research Council of Australia, Susan G Komen for the Cure, Breast Cancer Now, OncoSuisse, Dutch Cancer Society, Canadian Cancer Trials Group., Competing Interests: Declaration of interests BHC reports research grants from National Health and Medical Research Council, Susan G Komen for the Cure, Breast Cancer Now, and OncoSuisse Swiss Federation Against Cancer to support the submitted work at Trans-Tasman Oncology Group (Newcastle, NSW, Australia), Centre for Biostatistics and Clinical Trials of Peter MacCallum Cancer Centre (Melbourne, VIC, Australia), and participating cooperative trials groups and sites; and in kind support from Veracyte and NanoString for biomarker testing, outside the submitted work. IHK and AHW report research grants to support the submitted work at the UK Trial Centre, University of Edinburgh (Breast Cancer Now); and research funding from the Dutch Cancer Society to support the submitted work in the Netherlands. TJW reports research funding and non-direct financial support for biomarker testing from Exact Sciences and Genomic Health for ongoing studies. All other authors declare no competing interests., (Copyright © 2022 Elsevier Ltd. All rights reserved.)
- Published
- 2022
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48. Breast Density and Breast Cancer Risk.
- Author
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Harvey JA
- Published
- 2022
- Full Text
- View/download PDF
49. 2021-2022 Editor's Recognition Awards.
- Author
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Harvey JA
- Published
- 2022
- Full Text
- View/download PDF
50. Symbolic regression development of empirical equations for diffusion in Lennard-Jones fluids.
- Author
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Alam TM, Allers JP, Leverant CJ, and Harvey JA
- Subjects
- Diffusion
- Abstract
Symbolic regression (SR) with a multi-gene genetic program has been used to elucidate new empirical equations describing diffusion in Lennard-Jones (LJ) fluids. Examples include equations to predict self-diffusion in pure LJ fluids and equations describing the finite-size correction for self-diffusion in binary LJ fluids. The performance of the SR-obtained equations was compared to that of both the existing empirical equations in the literature and to the results from artificial neural net (ANN) models recently reported. It is found that the SR equations have improved predictive performance in comparison to the existing empirical equations, even though employing a smaller number of adjustable parameters, but show an overall reduced performance in comparison to more extensive ANNs.
- Published
- 2022
- Full Text
- View/download PDF
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