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Guo T, Jang SS, Ogawa R, Davis M, Ashworth E, Barback CV, Hall DJ, Vera DR. Fluorescent Guided Sentinel Lymph Mapping of the Oral Cavity with Fluorescent-Labeled Tilmanocept. Laryngoscope 2024; 134:1299-1307. [PMID: 37668315 PMCID: PMC10912359 DOI: 10.1002/lary.31014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 08/11/2023] [Accepted: 08/17/2023] [Indexed: 09/06/2023]
Abstract
OBJECTIVE With the shift toward utilization of sentinel lymph node biopsy (SLNB) in oral cavity cancer, improved techniques for intraoperative sentinel node identification are needed. This study investigates the feasibility of fluorescently labeled tilmanoscept in SLNB in an oral cancer rabbit model. METHODS An animal study was designed using 21 healthy male New Zealand rabbits. Gallium-68-labeled tilmanocept labeled with IRDye800CW was injected submucosally into the buccal mucosa (n = 6) or lateral tongue (n = 7) followed by PET imaging. One hour after injection, SLNB was performed using fluorescence imaging followed by a bilateral neck dissection and sampling of non-nodal surrounding tissue. All tissues were measured for radioactivity and fluorescence. In addition, eight rabbits were injected with delayed SLNB performed 48 h after injection. RESULTS Buccal injections all had ipsilateral SLN drainage and tongue injections exhibited 18.2% contralateral drainage. An average of 1.9 ± 1.0 SLN (range 1-5) were identified. In addition, an average of 16.9 ± 3.3 non-sentinel lymph nodes were removed per animal. SLNs had an average of 0.69 ± 0.60 percent-of-injected dose (%ID) compared with non-sentinel nodes with 0.012 ± 0.025 %ID and surrounding tissue with 0.0067 ± 0.015 %ID. There was 98.0% agreement between sentinel lymph nodes identified using fluorescence compared to radioactivity with Cohen's kappa coefficient of 0.879. In 48-h delayed SLNB, results were consistent with 97.8% agreement with radioactivity and Cohen's Kappa coefficient of 0.884. Fluorescence identified additional lymph nodes that were not identified by radioactivity, and with one false negative. CONCLUSION Fluorescent-labeled Tc-99 m-tilmanocept represents a highly accurate adjunct to enhance SLNB for oral cavity cancer. LEVEL OF EVIDENCE N/A Laryngoscope, 134:1299-1307, 2024.
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Affiliation(s)
- Theresa Guo
- Department of Otolaryngology, Head and Neck Surgery, University of California, San Diego, La Jolla, CA
- Moores Cancer Center, University of California, San Diego, La Jolla, CA
| | - Sophie S. Jang
- Department of Otolaryngology, Head and Neck Surgery, University of California, San Diego, La Jolla, CA
- Moores Cancer Center, University of California, San Diego, La Jolla, CA
| | - Ryotaro Ogawa
- Moores Cancer Center, University of California, San Diego, La Jolla, CA
- Department of Radiology, University of California, San Diego, La Jolla, CA
| | - Morgan Davis
- Department of Otolaryngology, Head and Neck Surgery, University of California, San Diego, La Jolla, CA
- Moores Cancer Center, University of California, San Diego, La Jolla, CA
| | - Edward Ashworth
- Moores Cancer Center, University of California, San Diego, La Jolla, CA
- Department of Radiology, University of California, San Diego, La Jolla, CA
| | - Christopher V. Barback
- Moores Cancer Center, University of California, San Diego, La Jolla, CA
- Department of Radiology, University of California, San Diego, La Jolla, CA
| | - David J. Hall
- Moores Cancer Center, University of California, San Diego, La Jolla, CA
- Department of Radiology, University of California, San Diego, La Jolla, CA
| | - David R. Vera
- Moores Cancer Center, University of California, San Diego, La Jolla, CA
- Department of Radiology, University of California, San Diego, La Jolla, CA
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Hall DJ, Angeles CE, Guenther TM, Xia Y, Maloney JD, DeCamp MM, McCarthy DP. Bilateral Lung Transplantation: How I Teach It. Ann Thorac Surg 2024; 117:285-288. [PMID: 37777148 DOI: 10.1016/j.athoracsur.2023.09.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 09/18/2023] [Indexed: 10/02/2023]
Affiliation(s)
- David J Hall
- Division of Cardiothoracic Surgery, Department of Surgery, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Clara E Angeles
- Division of Cardiothoracic Surgery, Department of Surgery, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Timothy M Guenther
- Division of Cardiothoracic Surgery, Department of Surgery, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Yu Xia
- Division of Cardiothoracic Surgery, Department of Surgery, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - James D Maloney
- Division of Cardiothoracic Surgery, Department of Surgery, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Malcolm M DeCamp
- Division of Cardiothoracic Surgery, Department of Surgery, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Daniel P McCarthy
- Division of Cardiothoracic Surgery, Department of Surgery, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin.
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Peris D, Ubbelohde EJ, Kuang MC, Kominek J, Langdon QK, Adams M, Koshalek JA, Hulfachor AB, Opulente DA, Hall DJ, Hyma K, Fay JC, Leducq JB, Charron G, Landry CR, Libkind D, Gonçalves C, Gonçalves P, Sampaio JP, Wang QM, Bai FY, Wrobel RL, Hittinger CT. Macroevolutionary diversity of traits and genomes in the model yeast genus Saccharomyces. Nat Commun 2023; 14:690. [PMID: 36755033 PMCID: PMC9908912 DOI: 10.1038/s41467-023-36139-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Accepted: 01/17/2023] [Indexed: 02/10/2023] Open
Abstract
Species is the fundamental unit to quantify biodiversity. In recent years, the model yeast Saccharomyces cerevisiae has seen an increased number of studies related to its geographical distribution, population structure, and phenotypic diversity. However, seven additional species from the same genus have been less thoroughly studied, which has limited our understanding of the macroevolutionary events leading to the diversification of this genus over the last 20 million years. Here, we show the geographies, hosts, substrates, and phylogenetic relationships for approximately 1,800 Saccharomyces strains, covering the complete genus with unprecedented breadth and depth. We generated and analyzed complete genome sequences of 163 strains and phenotyped 128 phylogenetically diverse strains. This dataset provides insights about genetic and phenotypic diversity within and between species and populations, quantifies reticulation and incomplete lineage sorting, and demonstrates how gene flow and selection have affected traits, such as galactose metabolism. These findings elevate the genus Saccharomyces as a model to understand biodiversity and evolution in microbial eukaryotes.
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Grants
- R01 GM080669 NIGMS NIH HHS
- T32 GM007133 NIGMS NIH HHS
- We thank the University of Wisconsin Biotechnology Center DNA Sequencing Facility for providing Illumina and Sanger sequencing facilities and services; Maria Sardi, Audrey Gasch, and Ursula Bond for providing strains; Sean McIlwain for providing guidance for genome ultra-scaffolding; Yury V. Bukhman for discussing applications of the Growth Curve Analysis Tool (GCAT); Mick McGee for HPLC analysis; Raúl Ortíz-Merino for assistance during YGAP annotations; Jessica Leigh for assistance with PopART; Cecile Ané for suggestions about BUCKy utilization and phylogenetic network analyses; Samina Naseeb and Daniela Delneri for sharing preliminary multi-locus Saccharomyces jurei data; and Branden Timm, Brian Kyle, and Dan Metzger for computational assistance. Some computations were performed on Tirant III of the Spanish Supercomputing Network (‘‘Servei d’Informàtica de la Universitat de València”) under the project BCV-2021-1-0001 granted to DP, while others were performed at the Wisconsin Energy Institute and the Center for High-Throughput Computing of the University of Wisconsin-Madison. During a portion of this project, DP was a researcher funded by the European Union’s Horizon 2020 research and innovation programme Marie Sklodowska-Curie, grant agreement No. 747775, the Research Council of Norway (RCN) grant Nos. RCN 324253 and 274337, and the Generalitat Valenciana plan GenT grant No. CIDEGENT/2021/039. DP is a recipient of an Illumina Grant for Illumina Sequencing Saccharomyces strains in this study. QKL was supported by the National Science Foundation under Grant No. DGE-1256259 (Graduate Research Fellowship) and the Predoctoral Training Program in Genetics, funded by the National Institutes of Health (5T32GM007133). This material is based upon work supported in part by the Great Lakes Bioenergy Research Center, Office of Science, Office of Biological and Environmental Research under Award Numbers DE-SC0018409 and DE-FC02-07ER64494; the National Science Foundation under Grant Nos. DEB-1253634, DEB-1442148, and DEB-2110403; and the USDA National Institute of Food and Agriculture Hatch Project Number 1020204. C.T.H. is an H. I. Romnes Faculty Fellow, supported by the Office of the Vice Chancellor for Research and Graduate Education with funding from Wisconsin Alumni Research Foundation. QMW was supported by the National Natural Science Foundation of China (NSFC) under Grant Nos. 31770018 and 31961133020. CRL holds the Canada Research Chair in Cellular Systems and Synthetic Biology, and his research on wild yeast is supported by a NSERC Discovery Grant.
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Affiliation(s)
- David Peris
- Laboratory of Genetics, J. F. Crow Institute for the Study of Evolution, Wisconsin Energy Institute, Genome Center of Wisconsin, University of Wisconsin-Madison, Madison, WI, USA.
- DOE Great Lakes Bioenergy Research Center, University of Wisconsin-Madison, Madison, WI, USA.
- Section for Genetics and Evolutionary Biology, Department of Biosciences, University of Oslo, Oslo, Norway.
- Department of Food Biotechnology, Institute of Agrochemistry and Food Technology (IATA), CSIC, Valencia, Spain.
| | - Emily J Ubbelohde
- Laboratory of Genetics, J. F. Crow Institute for the Study of Evolution, Wisconsin Energy Institute, Genome Center of Wisconsin, University of Wisconsin-Madison, Madison, WI, USA
- DOE Great Lakes Bioenergy Research Center, University of Wisconsin-Madison, Madison, WI, USA
| | - Meihua Christina Kuang
- Laboratory of Genetics, J. F. Crow Institute for the Study of Evolution, Wisconsin Energy Institute, Genome Center of Wisconsin, University of Wisconsin-Madison, Madison, WI, USA
| | - Jacek Kominek
- Laboratory of Genetics, J. F. Crow Institute for the Study of Evolution, Wisconsin Energy Institute, Genome Center of Wisconsin, University of Wisconsin-Madison, Madison, WI, USA
- DOE Great Lakes Bioenergy Research Center, University of Wisconsin-Madison, Madison, WI, USA
| | - Quinn K Langdon
- Laboratory of Genetics, J. F. Crow Institute for the Study of Evolution, Wisconsin Energy Institute, Genome Center of Wisconsin, University of Wisconsin-Madison, Madison, WI, USA
| | - Marie Adams
- Biotechnology Center, University of Wisconsin-Madison, Madison, WI, USA
| | - Justin A Koshalek
- Biotechnology Center, University of Wisconsin-Madison, Madison, WI, USA
| | - Amanda Beth Hulfachor
- Laboratory of Genetics, J. F. Crow Institute for the Study of Evolution, Wisconsin Energy Institute, Genome Center of Wisconsin, University of Wisconsin-Madison, Madison, WI, USA
- DOE Great Lakes Bioenergy Research Center, University of Wisconsin-Madison, Madison, WI, USA
| | - Dana A Opulente
- Laboratory of Genetics, J. F. Crow Institute for the Study of Evolution, Wisconsin Energy Institute, Genome Center of Wisconsin, University of Wisconsin-Madison, Madison, WI, USA
- DOE Great Lakes Bioenergy Research Center, University of Wisconsin-Madison, Madison, WI, USA
| | | | - Katie Hyma
- Department of Biology, University of Rochester, Rochester, NY, USA
| | - Justin C Fay
- Department of Biology, University of Rochester, Rochester, NY, USA
| | - Jean-Baptiste Leducq
- Departement des Sciences Biologiques, Université de Montréal, Montreal, QC, Canada
- Département de Biologie, PROTEO, Pavillon Charles‑Eugène‑Marchand, Institut de Biologie Intégrative et des Systèmes (IBIS), Université Laval, Quebec City, QC, Canada
| | - Guillaume Charron
- Canada Natural Resources, Laurentian Forestry Centre, Quebec City, QC, Canada
| | - Christian R Landry
- Département de Biologie, PROTEO, Pavillon Charles‑Eugène‑Marchand, Institut de Biologie Intégrative et des Systèmes (IBIS), Université Laval, Quebec City, QC, Canada
| | - Diego Libkind
- Centro de Referencia en Levaduras y Tecnología Cervecera (CRELTEC), Instituto Andino Patagónico de Tecnologías Biológicas y Geoambientales (IPATEC), Consejo Nacional de Investigaciones, Científicas y Técnicas (CONICET)-Universidad Nacional del Comahue, Bariloche, Argentina
| | - Carla Gonçalves
- Laboratory of Genetics, J. F. Crow Institute for the Study of Evolution, Wisconsin Energy Institute, Genome Center of Wisconsin, University of Wisconsin-Madison, Madison, WI, USA
- Associate Laboratory i4HB - Institute for Health and Bioeconomy, NOVA School of Science and Technology, Universidade NOVA de Lisboa, Caparica, Portugal
- UCIBIO-i4HB, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Caparica, Portugal
- Vanderbilt University, Department of Biological Sciences, Nashville, TN, USA
- Evolutionary Studies Initiative, Vanderbilt University, Nashville, TN, USA
| | - Paula Gonçalves
- UCIBIO-i4HB, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Caparica, Portugal
| | - José Paulo Sampaio
- UCIBIO-i4HB, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Caparica, Portugal
| | - Qi-Ming Wang
- Laboratory of Genetics, J. F. Crow Institute for the Study of Evolution, Wisconsin Energy Institute, Genome Center of Wisconsin, University of Wisconsin-Madison, Madison, WI, USA
- School of Life Sciences, Institute of Life Sciences and Green Development, Hebei University, Baoding, China
| | - Feng-Yan Bai
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Russel L Wrobel
- Laboratory of Genetics, J. F. Crow Institute for the Study of Evolution, Wisconsin Energy Institute, Genome Center of Wisconsin, University of Wisconsin-Madison, Madison, WI, USA
- DOE Great Lakes Bioenergy Research Center, University of Wisconsin-Madison, Madison, WI, USA
| | - Chris Todd Hittinger
- Laboratory of Genetics, J. F. Crow Institute for the Study of Evolution, Wisconsin Energy Institute, Genome Center of Wisconsin, University of Wisconsin-Madison, Madison, WI, USA.
- DOE Great Lakes Bioenergy Research Center, University of Wisconsin-Madison, Madison, WI, USA.
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Cassara CM, Long MT, Dollerschell JT, Chae F, Hall DJ, Demiralp G, Stampfl MJ, Bernardoni B, McCarthy DP, Glazer JM. Extracorporeal Cardiopulmonary Resuscitation: A Narrative Review and Establishment of a Sustainable Program. Medicina (B Aires) 2022; 58:medicina58121815. [PMID: 36557017 PMCID: PMC9781756 DOI: 10.3390/medicina58121815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2022] [Revised: 11/15/2022] [Accepted: 12/06/2022] [Indexed: 12/14/2022] Open
Abstract
The rates of survival with functional recovery for out of hospital cardiac arrest remain unacceptably low. Extracorporeal cardiopulmonary resuscitation (ECPR) quickly resolves the low-flow state of conventional cardiopulmonary resuscitation (CCPR) providing valuable perfusion to end organs. Observational studies have shown an association with the use of ECPR and improved survivability. Two recent randomized controlled studies have demonstrated improved survival with functional neurologic recovery when compared to CCPR. Substantial resources and coordination amongst different specialties and departments are crucial for the successful implementation of ECPR. Standardized protocols, simulation based training, and constant communication are invaluable to the sustainability of a program. Currently there is no standardized protocol for the post-cannulation management of these ECPR patients and, ideally, upcoming studies should aim to evaluate these protocols.
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Affiliation(s)
- Chris M. Cassara
- Department of Anesthesiology, University of Wisconsin Hospitals & Clinics, 600 Highland Ave., Madison, WI 53792, USA
- Correspondence: ; Tel.: +1-608-263-8100
| | - Micah T. Long
- Department of Anesthesiology, University of Wisconsin Hospitals & Clinics, 600 Highland Ave., Madison, WI 53792, USA
| | - John T. Dollerschell
- Department of Anesthesiology, University of Wisconsin Hospitals & Clinics, 600 Highland Ave., Madison, WI 53792, USA
| | - Floria Chae
- Department of Anesthesiology, Ohio State University Wexner Medical Center, 370 W. 9th Ave., Columbus, OH 43210, USA
| | - David J. Hall
- Department of Surgery, University of Wisconsin Hospitals & Clinics, 600 Highland Ave., Madison, WI 53792, USA
| | - Gozde Demiralp
- Department of Anesthesiology, University of Wisconsin Hospitals & Clinics, 600 Highland Ave., Madison, WI 53792, USA
| | - Matthew J. Stampfl
- Department of Emergency Medicine, University of Wisconsin Hospitals & Clinics, 600 Highland Ave., Madison, WI 53792, USA
| | - Brittney Bernardoni
- Department of Emergency Medicine, University of Wisconsin Hospitals & Clinics, 600 Highland Ave., Madison, WI 53792, USA
| | - Daniel P. McCarthy
- Department of Surgery, University of Wisconsin Hospitals & Clinics, 600 Highland Ave., Madison, WI 53792, USA
| | - Joshua M. Glazer
- Department of Emergency Medicine, University of Wisconsin Hospitals & Clinics, 600 Highland Ave., Madison, WI 53792, USA
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Simitian GS, Hall DJ, Leverson G, Lushaj EB, Lewis EE, Musgrove KA, McCarthy DP, Maloney JD. Consequences of anastomotic leaks after minimally invasive esophagectomy: A single-center experience. Surg Open Sci 2022; 11:26-32. [DOI: 10.1016/j.sopen.2022.11.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 10/21/2022] [Accepted: 11/14/2022] [Indexed: 11/18/2022] Open
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Hall DJ, Schulte JJ, Lewis EE, Bommareddi SR, Rohrer CT, Sultan S, Maloney JD, DeCamp MM, McCarthy DP. Successful Lung Transplantation for Severe Post COVID-19 Pulmonary Fibrosis. Ann Thorac Surg 2021; 114:e17-e19. [PMID: 34748736 PMCID: PMC8570389 DOI: 10.1016/j.athoracsur.2021.10.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Accepted: 10/17/2021] [Indexed: 11/24/2022]
Abstract
Lung transplantation has been well described for patients with coronavirus disease 2019 (COVID-19) in the acute setting, but less so for the resulting pulmonary sequelae. This report describes a case of lung transplantation for post–COVID-19 pulmonary fibrosis. A 52-year-old woman contracted COVID-19 in July 2020 and mounted a partial recovery, but she went on to have declining function over the ensuing 3 months, with development of fibrocystic lung changes. She underwent bilateral lung transplantation and recovered rapidly, was discharged home on postoperative day 14, and has done well in follow-up. This case report demonstrates that lung transplantation is an acceptable therapy for post–COVID-19 pulmonary fibrosis.
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Affiliation(s)
- David J Hall
- Division of Cardiothoracic Surgery, Department of Surgery; Department of Pathology and Laboratory Medicine
| | - Jefree J Schulte
- ; Division of Allergy, Pulmonary, and Critical Care Medicine, Department of Medicine
| | - Erik E Lewis
- Division of Cardiothoracic Surgery, Department of Surgery; Department of Pathology and Laboratory Medicine
| | - Swaroop R Bommareddi
- Division of Cardiothoracic Surgery, Department of Surgery; Department of Pathology and Laboratory Medicine
| | - Charles T Rohrer
- ; Division of Allergy, Pulmonary, and Critical Care Medicine, Department of Medicine
| | - Samir Sultan
- ;University of Wisconsin School of Medicine and Public Health, Madison, WI , USA
| | - James D Maloney
- Division of Cardiothoracic Surgery, Department of Surgery; Department of Pathology and Laboratory Medicine
| | - Malcolm M DeCamp
- Division of Cardiothoracic Surgery, Department of Surgery; Department of Pathology and Laboratory Medicine
| | - Daniel P McCarthy
- Division of Cardiothoracic Surgery, Department of Surgery; Department of Pathology and Laboratory Medicine.
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Loftus TJ, Filiberto AC, Upchurch GR, Hall DJ, Mira JC, Taylor J, Shaw CM, Tan SA, Sarosi GA. Performance Improvement With Implementation of a Surgical Skills Curriculum. J Surg Educ 2021; 78:561-569. [PMID: 32888847 PMCID: PMC7462643 DOI: 10.1016/j.jsurg.2020.08.030] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 07/23/2020] [Accepted: 08/16/2020] [Indexed: 06/11/2023]
Abstract
OBJECTIVE To assess the efficacy of an intern surgical skills curriculum involving a boot camp for core open and laparoscopic skills, self-guided practice with positive and negative incentives, and semiannual performance evaluations. DESIGN Longitudinal cohort study. SETTING Academic tertiary care center. PARTICIPANTS Intervention group (n = 15): residents who completed the intern surgical skills curriculum and had performance evaluations in fall of intern year, spring of intern year, and fall of second year. Control group (n = 8): second-year residents who were 1 year ahead of the intervention group in the same residency program, did not participate in the curriculum, and had performance evaluations in fall of second year. RESULTS In fall of second year of residency, the intervention group had better performance (presented as median values with interquartile ranges) than the control group on one-hand ties (left hand: 9.1 [6.3-10.1] vs 14.6 [13.5-15.4] seconds, p = 0.007; right hand: 8.7 [8.5-9.6] vs 11.5 [9.9-16.8] seconds, p = 0.039). The intervention group also had better performance on all open suturing skills, including mattress suturing (vertical: 33.4 [30.0-40.0] vs 55.8 [50.0-67.6] seconds, p = 0.001; horizontal: 28.7 [27.3-39.9] vs 52.7 [40.7-57.8] seconds, p = 0.003), and a water-filled glove clamp, divide, and ligate task (28.0 [25.0-31.0] vs 59.1 [53.0-93.0] seconds, p < 0.001). Finally, the intervention group had better performance on all laparoscopic skills, including peg transfer (66.0 [59.0-82.0] vs 95.2 [87.5-101.5] seconds, p = 0.018), circle cut (82.0 [69.0-124.0] seconds vs 191.8 [155.5-231.5] seconds, p = 0.002), and intracorporeal suturing (195.0 [117.0-200.0] seconds vs 359.5 [269.0-450.0] seconds, p = 0.002). CONCLUSIONS Implementation of a comprehensive surgical skills curriculum was associated with improved performance on core open and laparoscopic skills. Further research is needed to understand and optimize motivational factors for deliberate practice and surgical skill acquisition.
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Affiliation(s)
- Tyler J Loftus
- Department of Surgery, University of Florida Health, Gainesville, Florida
| | - Amanda C Filiberto
- Department of Surgery, University of Florida Health, Gainesville, Florida
| | - Gilbert R Upchurch
- Department of Surgery, University of Florida Health, Gainesville, Florida
| | - David J Hall
- Department of Surgery, University of Florida Health, Gainesville, Florida
| | - Juan C Mira
- Department of Surgery, University of Florida Health, Gainesville, Florida
| | - Janice Taylor
- Department of Surgery, University of Florida Health, Gainesville, Florida
| | - Christiana M Shaw
- Department of Surgery, University of Florida Health, Gainesville, Florida
| | - Sanda A Tan
- Department of Surgery, University of Florida Health, Gainesville, Florida
| | - George A Sarosi
- Department of Surgery, University of Florida Health, Gainesville, Florida.
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Rolla M, Consuegra S, Hall DJ, Garcia de Leaniz C. Seasonal and Spatial Variation in Growth and Abundance of Zebra Mussel (Dreissena polymorpha) in a Recently Invaded Artificial Lake: Implications for Management. Front Ecol Evol 2020. [DOI: 10.3389/fevo.2020.00159] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Jeng EI, Hall DJ, Vilaro J, Lipori P, Parker A, Ahmed M, Aranda JM, Martin TD, Beaver TM, Arnaoutakis GJ. Utilizing the index for mortality prediction after cardiac transplantation risk score to predict hospital resource consumption. J Card Surg 2020; 35:854-859. [PMID: 32115823 DOI: 10.1111/jocs.14486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
OBJECTIVE The index for mortality prediction after cardiac transplantation (IMPACT) risk score incorporates 12 preoperative recipient-specific variables, and has been validated as an accurate predictor of short- and long-term mortality after orthotopic heart transplantation (OHTx). We believe it can also be used to predict hospital costs, and we hypothesize that higher preoperative IMPACT risk scores are associated with increased hospital resource consumption. METHODS All OHTx patients ≥18 years of age at our institution were reviewed from 1 January 2000 to 31 December 2014. Total index hospitalization costs post-transplant were extracted and presented in 2014 consumer price index inflation-adjusted US dollars. Patients were stratified into quartiles (Q) according to IMPACT risk scores. Logarithmic transformation normalized cost data, and linear regression assessed for correlation. A comparison of cost between Q of IMPACT risk score was performed using rank-sum and Kruskal-Wallis tests. Survival was estimated using the Kaplan-Meier method. RESULTS Three hundred fifty-six (n = 356) OHTx were performed during the study period. The median IMPACT score for the cohort was five (interquartile range [IQR] 3-6). Eight (2.2%) patients died within 30-days and 1-year Kaplan-Meier survival was 88.3%. The median length of stay (LOS) was 16 (IQR 14-24) days. The median hospital cost for index admission was $222 200 (IQR:$169 200-$313 700). Median LOS was longer in Q4 vs Q1 (18 days vs 15 days, P = .01) and index hospital costs in Q4 were significantly higher compared to Q1 patients ($280 400 vs $205 000, P < .01). There was a significant positive correlation between IMPACT risk score and cost (regression coefficient .04, P < .01). CONCLUSION This is the first study in adult cardiac transplantation to identify a positive correlation between hospital cost and recipient risk using the IMPACT risk score. Cost and resource consumption for the index admission after OHTx were significantly higher in the highest IMPACT risk Q compared with patients in the lowest Q.
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Affiliation(s)
- Eric I Jeng
- Division of Thoracic and Cardiovascular Surgery, College of Medicine, University of Florida, Gainesville, Florida
| | - David J Hall
- Division of Thoracic and Cardiovascular Surgery, College of Medicine, University of Florida, Gainesville, Florida
| | - Juan Vilaro
- Division of Cardiovascular Medicine, College of Medicine, University of Florida, Gainesville, Florida
| | - Paul Lipori
- Finance, University of Florida-Shands, Gainesville, Florida
| | - Alex Parker
- Division of Cardiovascular Medicine, College of Medicine, University of Florida, Gainesville, Florida
| | - Mustafa Ahmed
- Division of Cardiovascular Medicine, College of Medicine, University of Florida, Gainesville, Florida
| | - Juan M Aranda
- Division of Cardiovascular Medicine, College of Medicine, University of Florida, Gainesville, Florida
| | - Tomas D Martin
- Division of Thoracic and Cardiovascular Surgery, College of Medicine, University of Florida, Gainesville, Florida
| | - Thomas M Beaver
- Division of Thoracic and Cardiovascular Surgery, College of Medicine, University of Florida, Gainesville, Florida
| | - George J Arnaoutakis
- Division of Thoracic and Cardiovascular Surgery, College of Medicine, University of Florida, Gainesville, Florida
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Loftus TJ, Hall DJ, Malaty JZ, Kuruppacherry SB, Sarosi GA, Shaw CM, Tan SA, Taylor J, Morris DS, Meyer LE, Hobbs JA. Associations Between National Board Exam Performance and Residency Program Emphasis on Patient Safety and Interprofessional Teamwork. Acad Psychiatry 2019; 43:581-584. [PMID: 31456123 DOI: 10.1007/s40596-019-01106-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 08/13/2019] [Accepted: 08/15/2019] [Indexed: 06/10/2023]
Abstract
OBJECTIVE Several aspects of medical training may contribute to the ultimate goal of producing excellent physicians whose patients will have the best possible outcomes. However, the relative importance of education, evaluation and feedback, duty hours, practice structure, and program culture in achieving this goal is unclear. This study assessed associations among in-training exam performance, Accreditation Council for Graduate Medical Education (ACGME) Resident Survey responses, and American Board of Medical Specialties (ABMS) national board exam performance. METHODS Residency training programs at a university teaching hospital were classified as having 5-year first-time ABMS pass rates above (n=12) or below (n=3) the national average for their specialty. These groups were compared by ACGME Resident Survey data and in-training exam performance. RESULTS Surveys were collected from 484/543 eligible residents (89%), including 177 surveys from programs with below-average board pass rates and 307 surveys from programs with aboveaverage board pass rates. In-training exam performance was similar between groups. Aboveaverage programs had stronger agreement with statements that their culture reinforced patient safety (4.72 vs. 4.30, p=0.006) and that information was not lost during transitions of care (4.14 vs. 3.63, p=0.001). Although the occurrence of interprofessional teamwork was similar between groups, above-average programs had stronger agreement with the statement that interprofessional teamwork was effective (4.60 vs. 4.17, p=0.003). CONCLUSION Residency programs emphasizing patient safety and effective interprofessional teamwork had above-average first-time national board pass rates.
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Affiliation(s)
| | - David J Hall
- University of Florida Health, Gainesville, FL, USA
| | | | | | | | | | - Sanda A Tan
- University of Florida Health, Gainesville, FL, USA
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Rolla M, Consuegra S, Carrington E, Hall DJ, Garcia de Leaniz C. Experimental evidence of chemical attraction in the mutualistic zebra mussel-killer shrimp system. PeerJ 2019; 7:e8075. [PMID: 31772838 PMCID: PMC6875389 DOI: 10.7717/peerj.8075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Accepted: 10/21/2019] [Indexed: 11/20/2022] Open
Abstract
Invasion facilitation, whereby one species has a positive effect on the establishment of another species, could help explain the rapid colonisation shown by some freshwater invasive species, but the underlying mechanisms remain unclear. We employed two-choice test arenas to test whether the presence of zebra mussel (Dreissena polymorpha) could facilitate the establishment of the killer shrimp (Dikerogammarus villosus). Killer shrimp preferred to settle on mats of zebra mussel, but this was unrelated to mat size, and was not different from attraction shown to artificial grass, suggesting that zebra mussel primarily provides substrate and refuge to the killer shrimp. Killer shrimp were strongly attracted to water scented by zebra mussel, but not to water scented by fish. Chemical attraction to the zebra mussel's scent did not differ between sympatric and allopatric populations of killer shrimp, suggesting that chemical attraction is not an acquired or learned trait. Our study shows, for the first time, chemical attraction between two highly invasive freshwater species, thereby providing a plausible mechanism for invasion facilitation. This has implications for managing the spread of killer shrimp, and perhaps other freshwater invasive species, because chemical attraction could significantly increase establishment success in mutualistic systems. Failure to consider invasion facilitation may underestimate the risk of establishment, and likely also the impact of some aquatic invaders.
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Affiliation(s)
- Matteo Rolla
- Department of BioSciences, Centre for Sustainable Aquatic Research, Swansea University, Swansea, United Kingdom
| | - Sofia Consuegra
- Department of BioSciences, Centre for Sustainable Aquatic Research, Swansea University, Swansea, United Kingdom
| | - Eleanor Carrington
- Department of BioSciences, Centre for Sustainable Aquatic Research, Swansea University, Swansea, United Kingdom
| | - David J Hall
- Cardiff Harbour Authority, Cardiff, United Kingdom
| | - Carlos Garcia de Leaniz
- Department of BioSciences, Centre for Sustainable Aquatic Research, Swansea University, Swansea, United Kingdom
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Qin Z, Hoh CK, Olson ES, Jahromi AH, Hall DJ, Barback CV, You YH, Yanagita M, Sharma K, Vera DR. Molecular Imaging of the Glomerulus via Mesangial Cell Uptake of Radiolabeled Tilmanocept. J Nucl Med 2019; 60:1325-1332. [PMID: 30796169 PMCID: PMC6910642 DOI: 10.2967/jnumed.118.223727] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 01/24/2019] [Indexed: 12/31/2022] Open
Abstract
An unmet need for the clinical management of chronic kidney disease is a predictive tool of kidney function during the first decade of the disease, when there is silent loss of glomerular function. The objective of this study was to demonstrate receptor-mediated binding of tilmanocept to CD206 within the kidney and provide evidence of kinetic sensitivity of this binding to renal function. Methods: Rats were positioned in a PET scanner with the liver and kidneys within the field of view. After an intravenous injection of 68Ga-IRDye800-tilmanocept, using 1 of 2 scaled molar doses (0.02 nmol/g, n = 5; or 0.10 nmol/g, n = 5), or coinjection (n = 3) of 68Ga-IRDye800-tilmanocept (0.10 nmol/g) and unlabeled tilmanocept (5.0 nmol/g), or a negative control, 68Ga-IRDye800-DTPA-galactosyl-dextran (0.02 nmol/g, n = 5), each animal was imaged for 20 min followed by a whole-body scan. Frozen kidney sections were stained for podocytes and CD206 using immunofluorescence. Molecular imaging of diabetic db/db mice (4.9 wk, n = 6; 7.3 wk, n = 4; 13.3 wk, n = 6) and nondiabetic db/m mice (n = 6) was performed with fluorescence-labeled 99mTc-tilmanocept (18.5 MBq, 2.6 nmol). Thirty minutes after injection, blood, liver, kidneys, and urine were assayed for radioactivity. Renal time-activity curves were generated. Results: Rat PET whole-body images and time-activity curves of 68Ga-IRDye800-tilmanocept demonstrated receptor-mediated renal accumulation with evidence of glomerular uptake. Activity within the renal cortex persisted during the 40-min study. Histologic examination demonstrated colocalization of CD206 and IRDye800-tilmanocept within the glomerulus. The glomerular accumulation of the coinjection and the negative control studies were significantly less than the CD206-targeted agent. The db/db mice displayed a multiphasic renal time-activity curve with high urinary bladder accumulation; the nondiabetic mice exhibited renal uptake curves dominated by a single phase with low bladder accumulation. Conclusion: This study demonstrated receptor-mediated binding to the glomerular mesangial cells and kinetic sensitivity of tilmanocept to chronic renal disease. Given the role of mesangial cells during the progression of diabetic nephropathy, PET or SPECT renal imaging with radiolabeled tilmanocept may provide a noninvasive quantitative assessment of glomerular function.
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Affiliation(s)
- Zhengtao Qin
- Department of Radiology, University of California, San Diego, La Jolla, California
- In Vivo Cancer and Molecular Imaging Program, University of California, San Diego, La Jolla, California
| | - Carl K Hoh
- Department of Radiology, University of California, San Diego, La Jolla, California
- In Vivo Cancer and Molecular Imaging Program, University of California, San Diego, La Jolla, California
| | - Emilia S Olson
- Department of Radiology, University of California, San Diego, La Jolla, California
- In Vivo Cancer and Molecular Imaging Program, University of California, San Diego, La Jolla, California
| | - Amin Haghighat Jahromi
- Department of Radiology, University of California, San Diego, La Jolla, California
- In Vivo Cancer and Molecular Imaging Program, University of California, San Diego, La Jolla, California
| | - David J Hall
- Department of Radiology, University of California, San Diego, La Jolla, California
- In Vivo Cancer and Molecular Imaging Program, University of California, San Diego, La Jolla, California
| | - Christopher V Barback
- Department of Radiology, University of California, San Diego, La Jolla, California
- In Vivo Cancer and Molecular Imaging Program, University of California, San Diego, La Jolla, California
| | - Young-Hyun You
- Center for Renal Translational Medicine, University of California, San Diego, La Jolla, California
- Department of Medicine, Division of Nephrology, University of California, San Diego, La Jolla, California; and
| | | | - Kumar Sharma
- Center for Renal Translational Medicine, University of California, San Diego, La Jolla, California
- Department of Medicine, Division of Nephrology, University of California, San Diego, La Jolla, California; and
| | - David R Vera
- Department of Radiology, University of California, San Diego, La Jolla, California
- In Vivo Cancer and Molecular Imaging Program, University of California, San Diego, La Jolla, California
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Gunzburg R, Colloca CJ, Jones CF, Hall DJ, McAviney J, Callary S, Hegazy MA, Szpalski M, Freeman BJC. Does nanoscale porous titanium coating increase lumbar spinal stiffness of an interbody fusion cage? An in vivo biomechanical analysis in an ovine model. Clin Biomech (Bristol, Avon) 2019; 67:187-196. [PMID: 31176064 DOI: 10.1016/j.clinbiomech.2019.04.024] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Revised: 04/29/2019] [Accepted: 04/30/2019] [Indexed: 02/07/2023]
Abstract
BACKGROUND Quantitative objective measures to determine fusion achievement further enable the comparison of new technologies, such as interbody cage surface enhancement. Our aims were to compare in vivo biomechanical responses of ovine L4/5 lumbar motion segments with two cages: 1) Polyetheretherketone or 2) Polyetheretherketone with a nanosurfaced titanium porous scaffold from Nanovis, Inc. METHODS Fourteen Merino sheep randomly received either 1) standard Polyetheretherketone cage or 2) Nanocoated Polyetheretherketone cage at L4/L5 with autologous bone graft. At baseline and one-year follow-up, dynamic spinal stiffness was quantified in vivo using a validated mechanical assessment at 2 Hz, 6 Hz, and 12 Hz. The dorsoventral secant stiffness (ky = force/displacement, N/mm) and L4-L5 accelerations were determined at each frequency. A repeated measures analysis of variance with Bonferonni correction was used to evaluate within and between group differences among the biomechanical variables. FINDINGS Both implants increased spinal stiffness at 2 Hz (21 and 39%, respectively, p < .005), and at 6 Hz (12 and 27%, p < .0001). Significantly greater spinal stiffness was observed with Nanocoated Polyetheretherketone at one-year for both frequencies (p < .05). No significant differences were observed at 12 Hz within or between groups. L4-L5 dorsoventral accelerations were significantly decreased one year following cage placement only with Nanocoated Polyetheretherketone (p < .05) and greater reductions in acceleration were observed with Nanocoated Polyetheretherketone compared to standard Polyetheretherketone (p < .05). INTERPRETATION Both cages increased spinal stiffness, yet, nanosurfaced cages resulted in greater spinal stiffness changes and decreases in L4-L5 accelerations. These findings may assist in clinical decision making and post-operative recovery strategies.
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Affiliation(s)
- Robert Gunzburg
- Department of Orthopaedic Surgery, Edith Cavell Clinic, Brussels, Belgium.
| | | | - Claire F Jones
- Adelaide Centre for Spinal Research, SA Pathology, Adelaide, Australia; Centre for Orthopaedic and Trauma Research, University of Adelaide, Australia
| | - David J Hall
- Adelaide Centre for Spinal Research, SA Pathology, Adelaide, Australia; Department of Spinal Surgery, Royal Adelaide Hospital, Adelaide, Australia
| | | | - Stuart Callary
- School of Mechanical Engineering, University of Adelaide, Australia
| | - Mostafa A Hegazy
- Science Department, Southwest Minnesota State University, Marshall, MN, USA
| | - Marek Szpalski
- Department of Orthopedics, Hôpitaux Iris Sud/IRIS South Teaching Hospitals, Brussels, Belgium
| | - Brian J C Freeman
- Adelaide Centre for Spinal Research, SA Pathology, Adelaide, Australia; Centre for Orthopaedic and Trauma Research, University of Adelaide, Australia; Department of Spinal Surgery, Royal Adelaide Hospital, Adelaide, Australia
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Hall DJ, Mira JC, Hoffman MR, Keshava HB, Olsen KR, Hardaway JC, Underwood PW, Hawley KL, Turner PL, Antony AB, Vasilopoulos T, Mouawad NJ. Postoperative surgical trainee opioid prescribing practices (POST-OPP): A national survey. J Opioid Manag 2019; 15:307-322. [PMID: 31637683 DOI: 10.5055/jom.2019.0516] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
BACKGROUND Increasing opioid-related deaths have heightened focus on combating the opioid epidemic. The impact of surgical trainees on opioid-related deaths is unclear, and there is little data examining the association between trainee pain management education and opioid prescribing practices. METHODS An anonymous, online survey was distributed to members of the Resident and Associate Society of the American College of Surgeons. The survey covered five themes: education and knowledge, prescribing practices, clinical case scenarios, policy, and beliefs and attitudes. Linear mixed models were used to evaluate the influence of respondent characteristics on reported morphine milligram equivalents (MME) prescribed for common general surgery clinical scenarios. RESULTS Of 427 respondents, 54 percent indicated receiving training in postoperative pain management during medical school and 66 percent during residency. Only 35 percent agreed that they had received adequate training in prescribing opioids. There was a significant association between undergoing formal pain management training in medical school and prescribing fewer MME for common outpatient general surgery scenarios (94 ± 15.2 vs 108 ± 15.0; p = 0.003). Similarly, formal pain management training in residency was associated with prescribing fewer MME in the survey scenarios (92.6 ± 15.2 vs 109 ± 15.2; p = 0.002). CONCLUSION In this survey, nearly two-thirds of surgical residents felt that they were inadequately trained in opioid pre-scribing. Our findings additionally suggest that improving education may result in increased resident comfort with man-aging surgical pain, potentially leading to more responsible opioid prescribing. Further work will facilitate residency pro-grams' development of educational curricula for opioid prescribing best practices.
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Affiliation(s)
- David J Hall
- Department of Surgery, University of Florida College of Medicine, Gainesville, Florida
| | - Juan C Mira
- Department of Surgery, University of Florida College of Medicine, Gainesville, Florida
| | - Melissa R Hoffman
- Department of Surgery, University of North Carolina School of Medicine, Chapel Hill, North Carolina
| | - Hari B Keshava
- Department of General Surgery, Cleveland Clinic Foundation, Cleveland, Ohio
| | - Kevin R Olsen
- Department of Anesthesiology, University of Florida College of Medicine, Gainesville, Florida
| | - John C Hardaway
- Department of Surgical Oncology, Roger Williams Medical Center, Providence, Rhode Island
| | - Patrick W Underwood
- Department of Surgery, University of Florida College of Medicine, Gainesville, Florida
| | - Kristy L Hawley
- Department of Surgery, MedStar Union Memorial Hospital, Baltimore, Maryland
| | - Patricia L Turner
- Department of Surgery, University of Chicago Medicine, Chicago, Illinois
| | - Ajay B Antony
- Department of Anesthesiology, University of Florida College of Medicine, Gainesville, Florida
| | - Terrie Vasilopoulos
- Department of Anesthesiology, University of Florida College of Medicine, Gainesville, Florida
| | - Nicolas J Mouawad
- Department of Surgery, McLaren Bay Region, Bay City, Michigan; Department of Surgery, Michigan State University, Lansing, Michigan
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Hall DJ, Martin CG, Welford M, Debbert SL. An inquiry-based exercise in medicinal chemistry: Synthesis of a molecular library and screening for potential antimalarial and anti-inflammatory compounds. Biochem Mol Biol Educ 2018; 46:424-434. [PMID: 30369039 DOI: 10.1002/bmb.21138] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Revised: 05/06/2018] [Accepted: 06/05/2018] [Indexed: 06/08/2023]
Abstract
The development of new medicines holds particular fascination for chemistry, biochemistry, and biology students interested in a career in medicine or the life sciences. The identification and refinement of lead compounds to treat diseases requires researchers to be facile in a number of different disciplines including organic synthesis, biochemistry, cell biology, and molecular biology. We have developed an interdisciplinary, inquiry-based laboratory spanning both organic chemistry and biochemistry classes that acquaints students with research in medicinal chemistry. The first part of the exercise takes place in the second semester of organic chemistry, where pairs of students design and execute their own multistep synthesis of a novel compound with anti-inflammatory and/or antimalarial potential. Later, in first semester biochemistry, many of the same students then test these synthesized compounds for cytotoxicity, inhibition of the enzyme nitric oxide synthase, and inhibition of the transcription factor NF-kB. Learning outcomes, measured by the Classroom Undergraduate Research Experience (CURE) survey, suggest that students participating in both classes had higher gains than an average student. © 2018 International Union of Biochemistry and Molecular Biology, 46(5):424-434, 2018.
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Affiliation(s)
- David J Hall
- Chemistry Department, Lawrence University, Appleton, Wisconsin, 54911
| | - Charles G Martin
- Chemistry Department, Lawrence University, Appleton, Wisconsin, 54911
| | - Michael Welford
- Chemistry Department, Lawrence University, Appleton, Wisconsin, 54911
| | - Stefan L Debbert
- Chemistry Department, Lawrence University, Appleton, Wisconsin, 54911
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Weglarz TC, Holsen LK, Ribbons RR, Hall DJ. Microbial diversity and nitrogen-metabolizing gene abundance in backyard food waste composting systems. J Appl Microbiol 2018; 125:1066-1075. [PMID: 29877013 DOI: 10.1111/jam.13945] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Revised: 05/23/2018] [Accepted: 05/30/2018] [Indexed: 11/29/2022]
Abstract
AIMS The microbial diversity of backyard compost piles is poorly understood compared to large-scale, highly regulated composting systems. The purpose of this study was the identification of the microbial community composition and associated change over time among three different backyard composting styles. METHODS AND RESULTS Food waste was composted in a household backyard compost bin, a small-scale aerated windrow or a semi-aerated static pile. Samples were obtained from each sequential phase of the composting process for 16s rRNA sequencing and relationships between temperature, moisture and microbial communities were examined. The Bacilli dominated in the early phases of composting then transitioned to Proteobacteria in the later stages. Different bacterial species increased and decreased dramatically in different composting systems and at different phases of the composting process. We performed qPCR to quantify gene abundance of nirS to profile the nitrogen-metabolizing bacteria present in each composting system. Gene abundance of nirS varied with temperature, but peaked during the cooling phase in the aerated windrow. CONCLUSIONS Although the phases of decomposition were not as distinct as large-scale regulated piles, the microbial diversity mirrored the appropriate phases. Interestingly, different backyard composting styles were marked by the predominance of certain bacterial species. In particular, nitrogen-metabolizing bacterial communities peaked in the later stages of decomposition. SIGNIFICANCE AND IMPACT OF THE STUDY A profile of the compost microbiome yields important clues about how differences in backyard food waste composting systems influence bacterial species that may facilitate or hinder nitrogen metabolism.
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Affiliation(s)
- T C Weglarz
- Department of Biological Sciences, University of Wisconsin - Fox Valley, Menasha, WI, USA
| | - L K Holsen
- Chemistry Department, Lawrence University, Appleton, WI, USA
| | - R R Ribbons
- Biology Department, Lawrence University, Appleton, WI, USA
| | - D J Hall
- Chemistry Department, Lawrence University, Appleton, WI, USA
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Anderson KM, Barback CV, Qin Z, Hall DJ, Hoh CK, Vera DR, McHale MT. Molecular Imaging of endometrial sentinel lymph nodes utilizing fluorescent-labeled Tilmanocept during robotic-assisted surgery in a porcine model. PLoS One 2018; 13:e0197842. [PMID: 29965996 PMCID: PMC6028102 DOI: 10.1371/journal.pone.0197842] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Accepted: 05/09/2018] [Indexed: 11/19/2022] Open
Abstract
Molecular imaging with a fluorescent version of Tilmanocept may permit an accurate and facile detection of sentinel nodes of endometrial cancer. Tilmanocept accumulates in sentinel lymph nodes (SLN) by binding to a cell surface receptor unique to macrophages and dendritic cells. Four female Yorkshire pigs underwent cervical stromal injection of IRDye800-Tilmanocept, a molecular imaging agent tagged with near-infrared fluorescent dye and radiolabeled with gallium-68 and technetium-99m. PET/CT scans 1.5 hours post-injection provided pre-operative SLN mapping. Robotic-assisted lymphadenectomy was performed two days after injection, using the FireFly imaging system to identify nodes demonstrating fluorescent signal. After removal of fluorescent nodes, pelvic and periaortic node dissections were performed. Nodes were assayed for technetium-99m activity, and SLNs were established using the “10%-rule”, requiring that the radioactivity of additional SLNs be greater than 10% of the “hottest” SLN. Thirty-four nodal samples were assayed ex vivo for radioactivity. All the SLNs satisfying the “10%-rule” were detected using the FireFly system. Five fluorescent nodes were detected, corresponding with preoperative PET/CT scan. Three pigs had one SLN and one pig had two SLNs, with 100% concordance between fluorescence and radioactivity. Fluorescent-labeled Tilmanocept permits real-time intraoperative detection of SLNs during robotic-assisted lymphadenectomy for endometrial cancer in a porcine model. When radiolabeled with gallium-68, Tilmanocept allows for preoperative localization of SLNs using PET/CT, and shows specificity to SLNs with persistent fluorescent signal, detectable using the FireFly system, for two days post-injection. In conclusion, these findings suggest that a phase I trial in human subjects is warranted, and that a long-term goal of an intra-operative administration of non-radioactive fluorescent-labeled Tilmanocept is possible.
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Affiliation(s)
- Kristen M. Anderson
- Department of Reproductive Medicine, Division of Gynecologic Oncology, University of California, San Diego, United States of America
- * E-mail:
| | - Christopher V. Barback
- Department of Radiology, University of California, San Diego, United States of America
- UCSD Molecular Imaging Program, University of California, San Diego, United States of America
| | - Zhengtao Qin
- Department of Radiology, University of California, San Diego, United States of America
- UCSD Molecular Imaging Program, University of California, San Diego, United States of America
| | - David J. Hall
- Department of Radiology, University of California, San Diego, United States of America
- UCSD Molecular Imaging Program, University of California, San Diego, United States of America
| | - Carl K. Hoh
- Department of Radiology, University of California, San Diego, United States of America
- UCSD Molecular Imaging Program, University of California, San Diego, United States of America
| | - David R. Vera
- Department of Radiology, University of California, San Diego, United States of America
- UCSD Molecular Imaging Program, University of California, San Diego, United States of America
| | - Michael T. McHale
- Department of Reproductive Medicine, Division of Gynecologic Oncology, University of California, San Diego, United States of America
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Olsen KR, Hall DJ, Mira JC, Underwood PW, Antony AB, Vasilopoulos T, Sarosi GA. Postoperative surgical trainee opioid prescribing practices (POST OPP): an institutional study. J Surg Res 2018; 229:58-65. [PMID: 29937017 DOI: 10.1016/j.jss.2018.03.011] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Revised: 02/02/2018] [Accepted: 03/13/2018] [Indexed: 01/04/2023]
Abstract
BACKGROUND Increasing mortality from opioid overdoses has prompted increased focus on prescribing practices of physicians. Unfortunately, resident physicians rarely receive formal education in effective opioid prescribing practices or postoperative pain management. Data to inform surgical training programs regarding the utility and feasibility of formal training are lacking. METHODS Following Institutional Review Board approval, a single institution's resident physicians who had completed at least one surgical rotation were surveyed to assess knowledge of pain management and evaluate opioid prescribing practices. RESULTS Fifty-three respondents (68% males and 32% females) completed the survey. Most respondents denied receiving formal instruction in opioid pain medication prescribing practices during either medical school (62.3%) or residency (56.6%); however, nearly all respondents stated they were aware of the side effects of opioid pain medications, and a majority felt confident in their knowledge of opioid pharmacokinetics and pharmacodynamics. Of the respondents, 47% either "agreed" or "strongly agreed" that they prescribed more opioid medications than necessary to patients being discharged following a surgical procedure. Individual case scenario responses demonstrated variability in the number of morphine milligram equivalents prescribed across scenarios (P < 0.001). Male and nonsurgical specialty respondents reported prescribing significantly fewer overall morphine milligram equivalents in these scenarios. CONCLUSIONS This pilot study shows wide variability in opioid prescribing practices and attitudes toward pain management among surgical trainees, illustrating the potential utility of formal education in pain management and effective prescribing of these medications. A broader assessment of surgical trainees' knowledge and perception of opioid prescribing practices is warranted to facilitate the development of such a program.
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Affiliation(s)
- Kevin R Olsen
- Department of Anesthesiology, University of Florida College of Medicine, Gainesville, Florida.
| | - David J Hall
- Department of Surgery, University of Florida College of Medicine, Gainesville, Florida
| | - Juan C Mira
- Department of Surgery, University of Florida College of Medicine, Gainesville, Florida
| | - Patrick W Underwood
- Department of Surgery, University of Florida College of Medicine, Gainesville, Florida
| | - Ajay B Antony
- Department of Anesthesiology, University of Florida College of Medicine, Gainesville, Florida
| | - Terrie Vasilopoulos
- Department of Anesthesiology, University of Florida College of Medicine, Gainesville, Florida; Department of Orthopedics and Rehabilitation, University of Florida College of Medicine, Gainesville, Florida
| | - George A Sarosi
- Department of Surgery, University of Florida College of Medicine, Gainesville, Florida
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Hall DJ. Mitochondrial membrane potential and aging in the beer fermentation process. FASEB J 2018. [DOI: 10.1096/fasebj.2018.32.1_supplement.543.12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Abstract
Doctors working in psychiatry have been shown to lack practical skills in basic cardiac life support (BCLS), but these have not been regarded as priorities for training. This study assessed levels of experience, confidence and skill in BCLS, in psychiatrists, and examined the effect of a single training session on practical skills. Levels of skill were generally poor but significant improvement was seen following training. It is recommended that all psychiatrists undergo brief regular practical training in BCLS.
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Abstract
Aims and methodTo determine the attitudes of psychiatrists towards the practice of evidence-based medicine by use of a postal questionnaire. A survey was sent to Consultant Psychiatrists and to Higher Trainees in Psychiatry in the West of Scotland Region.ResultsWhile older influences on decision-making such as tradition and deference still play a part, almost all respondents consider the adoption of more effective care based on best available external evidence desirable; most think it attainable. The technology is generally available, but further training is desired to access the information and its critical analysis.Clinical implicationsEducational activities should increasingly focus on skills for data search and critical analysis.
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Hall DJ, Shaw CM, Iqbal A, Tan SA. The Uterine Flap: An Option for Autogenous Repair of Perineal Hernia after Abdominoperineal Resection. Am Surg 2017; 83:e324-e325. [PMID: 28822376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
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Affiliation(s)
- David J. Hall
- Department of Surgery University of Florida College of Medicine Gainesville, Florida
| | - Christiana M. Shaw
- Department of Surgery University of Florida College of Medicine Gainesville, Florida
| | - Atif Iqbal
- Department of Surgery University of Florida College of Medicine Gainesville, Florida
| | - Sanda A. Tan
- Department of Surgery University of Florida College of Medicine Gainesville, Florida
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Hall DJ, Belli EV, Gregg JA, Salgado JC, Baz MA, Staples ED, Beaver TM, Machuca TN. Two Decades of Lung Retransplantation: A Single-Center Experience. Ann Thorac Surg 2017; 103:1076-1083. [DOI: 10.1016/j.athoracsur.2016.09.107] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Revised: 09/05/2016] [Accepted: 09/29/2016] [Indexed: 11/29/2022]
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Lee HJ, Barback CV, Hoh CK, Qin Z, Kader K, Hall DJ, Vera DR, Kane CJ. Fluorescence-Based Molecular Imaging of Porcine Urinary Bladder Sentinel Lymph Nodes. J Nucl Med 2017; 58:547-553. [PMID: 28153955 DOI: 10.2967/jnumed.116.178582] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Accepted: 10/31/2016] [Indexed: 11/16/2022] Open
Abstract
The primary objective was to test the ability of a laparoscopic camera system to detect the fluorescent signal emanating from sentinel lymph nodes (SLNs) approximately 2 d after injection and imaging of a positron-emitting molecular imaging agent into the submucosa of the porcine urinary bladder. Methods: Three female pigs underwent a submucosal injection of the bladder with fluorescent-tagged tilmanocept, radiolabeled with both 68Ga and 99mTc. One hour after injection, a pelvic PET/CT scan was acquired for preoperative SLN mapping. Approximately 36 h later, robotic SLN mapping was performed using a fluorescence-capable camera system. After identification of the fluorescent lymph nodes, a pelvic lymph node dissection was completed with robotic assistance. All excised nodal packets (n = 36) were assayed for 99mTc activity, which established a lymph node as an SLN. 99mTc activity was also used to calculate the amount of dye within each lymph node. Results: All of the SLNs defined by the ex vivo γ-well assay of 99mTc activity were detected by fluorescence mode imaging. The time between injection and robotic SLN mapping ranged from 32 to 38 h. A total of 5 fluorescent lymph nodes were detected; 2 pigs had 2 fluorescent lymph nodes and 1 pig exhibited a single lymph node. Four of the 5 SLNs exhibited increased SUVs of 12.4-139.0 obtained from PET/CT. The dye content of the injection sites ranged from 371 to 1,441 pmol, which represented 16.5%-64.1% of the injected dose; the amount of dye within the SLNs ranged from 8.5 to 88 pmol, which was equivalent to 0.38%-3.91% of the administered dose. Conclusion: Fluorescent-labeled 68Ga-tilmanocept allows for PET imaging and real-time intraoperative detection of SLNs during robotic surgery.
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Affiliation(s)
- Hak J Lee
- Department of Urology, University of California, San Diego, La Jolla, California
| | - Christopher V Barback
- Department of Radiology, University of California, San Diego, La Jolla, California; and.,UCSD Molecular Imaging Program, University of California, San Diego, La Jolla, California
| | - Carl K Hoh
- Department of Radiology, University of California, San Diego, La Jolla, California; and.,UCSD Molecular Imaging Program, University of California, San Diego, La Jolla, California
| | - Zhengtao Qin
- Department of Radiology, University of California, San Diego, La Jolla, California; and.,UCSD Molecular Imaging Program, University of California, San Diego, La Jolla, California
| | - Kareem Kader
- Department of Urology, University of California, San Diego, La Jolla, California
| | - David J Hall
- Department of Radiology, University of California, San Diego, La Jolla, California; and.,UCSD Molecular Imaging Program, University of California, San Diego, La Jolla, California
| | - David R Vera
- Department of Radiology, University of California, San Diego, La Jolla, California; and .,UCSD Molecular Imaging Program, University of California, San Diego, La Jolla, California
| | - Christopher J Kane
- Department of Urology, University of California, San Diego, La Jolla, California
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Abstract
Background: Merkel cell carcinoma (MCC) is a relatively rare and aggressive cutaneous neuroendocrine malignancy characterized by high incidence of local recurrence, distant metastases, regional nodal metastases, and high mortality. Clinically, MCC presents as a persistent asymptomatic red/pink shaped nodule, usually smaller than 2 cm with nontender intracutaneous swelling, with rapidly growing localized disease with lymph node metastases preceding distant metastases. Because of its rare nature and the lack of comprehensive understanding of the disease, management of MCC has been controversial. Methods: An 87-year-old retired Caucasian male with a history of tobacco use, chronic sun exposure, and multiple squamous and basal cell carcinomas presented with a 1.8 × 1.3 cm red, nontender nodule on the dorsum of the proximal phalanx of the left long finger first noticed 6 months prior to presentation. Biopsy was consistent with MCC after which he was treated with wide local excision, full-thickness skin grafting, and sentinel lymphadenectomy (1/4 nodes positive) followed by adjuvant radiation therapy. Results: He recovered appropriately and was clinically and radiographically disease free at 2.5-year follow-up. Conclusion: Although it remains rare, MCC has increased in incidence over the last several decades and has a predilection to occur over sun exposed areas. Highly aggressive, it has a high incidence of regional and distant metastasis as well as local recurrence. As a result, it is important that practitioners involved in the care of skin and hand lesions be aware of this condition and the need for a multidisciplinary treatment approach.
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Affiliation(s)
| | - David J. Hall
- University of Florida College of Medicine, Gainesville, FL, USA
| | - Winston T. Richards
- University of Florida College of Medicine, Gainesville, FL, USA,Winston T. Richards, Clinical Assistant Professor, Department of Surgery, University of Florida College of Medicine, 1600 SW Archer Road, Box 100286, Gainesville, FL 32610, USA.
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Abstract
This paper examines the consequences of the introduction of playleaders into two children's wards in Great Britain: one in Wales, the other in an English hospital. Playleaders' freedom to innovate in their work was found to be limited by the degree of cooperation that they were able to achieve with existing workers in the wards. Negotiations with nurses, teachers, and domestic staff are considered in detail, and an analysis of relative sources of power is presented. It is suggested that the predominant mode of response of staff to playleaders was distancing and isolation, which will pose problems for the greater deployment of playleaders in hospitals, and has consequences for the professional development of play in hospitals.
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Affiliation(s)
- David J. Hall
- Medical Sociology Research Centre, University College of Swansea, Wales
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Smith-Bindman R, Wang Y, Yellen-Nelson TR, Moghadassi M, Wilson N, Gould R, Seibert A, Boone JM, Krishnam M, Lamba R, Hall DJ, Miglioretti DL. Predictors of CT Radiation Dose and Their Effect on Patient Care: A Comprehensive Analysis Using Automated Data. Radiology 2016; 282:182-193. [PMID: 27438166 DOI: 10.1148/radiol.2016151391] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Purpose To determine patient, vendor, and institutional factors that influence computed tomography (CT) radiation dose. Materials and Methods The relevant institutional review boards approved this HIPAA-compliant study, with waiver of informed consent. Volume CT dose index (CTDIvol) and effective dose in 274 124 head, chest, and abdominal CT examinations performed in adult patients at 12 facilities in 2013 were collected prospectively. Patient, vendor, and institutional characteristics that could be used to predict (a) median dose by using linear regression after log transformation of doses and (b) high-dose examinations (top 25% of dose within anatomic strata) by using modified Poisson regression were assessed. Results There was wide variation in dose within and across medical centers. For chest CTDIvol, overall median dose across all institutions was 11 mGy, and institutional median dose was 7-16 mGy. Models including patient, vendor, and institutional factors were good for prediction of median doses (R2 = 0.31-0.61). The specific institution where the examination was performed (reflecting the specific protocols used) accounted for a moderate to large proportion of dose variation. For chest CTDIvol, unadjusted median CTDIvol was 16.5 mGy at one institution and 6.7 mGy at another (adjusted relative median dose, 2.6 mGy [95% confidence interval: 2.5, 2.7]). Several variables were important predictors that a patient would undergo high-dose CT. These included patient size, the specific institution where CT was performed, and the use of multiphase scanning. For example, while 49% of patients (21 411 of 43 696) who underwent multiphase abdominal CT had a high-dose examination, 8% of patients (4977 of 62 212) who underwent single-phase CT had a high-dose examination (adjusted relative risk, 6.20 [95% CI: 6.17, 6.23]). If all patients had been examined with single-phase CT, 69% (18 208 of 26 388) of high-dose examinations would have been eliminated. Patient size, institutional-specific protocols, and multiphase scanning were the most important predictors of dose (change in R2 = 8%-32%), followed by manufacturer and iterative reconstruction (change in R2, 0.2%-15.0%). Conclusion CT doses vary considerably within and across facilities. The primary factors that influenced dose variation were multiphase scanning and institutional protocol choices. It is unknown if the variation in these factors influenced diagnostic accuracy. © RSNA, 2016.
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Affiliation(s)
- Rebecca Smith-Bindman
- From the Department of Radiology and Biomedical Imaging (R.S., M.M., N.W., R.G.), Department of Epidemiology and Biostatistics (R.S.), and Philip R. Lee Institute for Health Policy Studies (R.S.), University of California, San Francisco, 350 Parnassus Ave, Suite 307C, San Francisco, CA 94143-0336; Division of Biostatistics, Department of Public Health Sciences (Y.W., D.L.M.), and Department of Radiology (A.S., J.M.B., R.L.), University of California, Davis, Davis, Calif; Department of Radiology, University of California, San Diego, San Diego, Calif (T.R.Y., D.J.H.); Department of Radiological Sciences, University of California, Irvine, Orange County, Calif (M.K.); and Group Health Research Institute, Group Health Cooperative, Seattle, Wash (D.L.M.)
| | - Yifei Wang
- From the Department of Radiology and Biomedical Imaging (R.S., M.M., N.W., R.G.), Department of Epidemiology and Biostatistics (R.S.), and Philip R. Lee Institute for Health Policy Studies (R.S.), University of California, San Francisco, 350 Parnassus Ave, Suite 307C, San Francisco, CA 94143-0336; Division of Biostatistics, Department of Public Health Sciences (Y.W., D.L.M.), and Department of Radiology (A.S., J.M.B., R.L.), University of California, Davis, Davis, Calif; Department of Radiology, University of California, San Diego, San Diego, Calif (T.R.Y., D.J.H.); Department of Radiological Sciences, University of California, Irvine, Orange County, Calif (M.K.); and Group Health Research Institute, Group Health Cooperative, Seattle, Wash (D.L.M.)
| | - Thomas R Yellen-Nelson
- From the Department of Radiology and Biomedical Imaging (R.S., M.M., N.W., R.G.), Department of Epidemiology and Biostatistics (R.S.), and Philip R. Lee Institute for Health Policy Studies (R.S.), University of California, San Francisco, 350 Parnassus Ave, Suite 307C, San Francisco, CA 94143-0336; Division of Biostatistics, Department of Public Health Sciences (Y.W., D.L.M.), and Department of Radiology (A.S., J.M.B., R.L.), University of California, Davis, Davis, Calif; Department of Radiology, University of California, San Diego, San Diego, Calif (T.R.Y., D.J.H.); Department of Radiological Sciences, University of California, Irvine, Orange County, Calif (M.K.); and Group Health Research Institute, Group Health Cooperative, Seattle, Wash (D.L.M.)
| | - Michelle Moghadassi
- From the Department of Radiology and Biomedical Imaging (R.S., M.M., N.W., R.G.), Department of Epidemiology and Biostatistics (R.S.), and Philip R. Lee Institute for Health Policy Studies (R.S.), University of California, San Francisco, 350 Parnassus Ave, Suite 307C, San Francisco, CA 94143-0336; Division of Biostatistics, Department of Public Health Sciences (Y.W., D.L.M.), and Department of Radiology (A.S., J.M.B., R.L.), University of California, Davis, Davis, Calif; Department of Radiology, University of California, San Diego, San Diego, Calif (T.R.Y., D.J.H.); Department of Radiological Sciences, University of California, Irvine, Orange County, Calif (M.K.); and Group Health Research Institute, Group Health Cooperative, Seattle, Wash (D.L.M.)
| | - Nicole Wilson
- From the Department of Radiology and Biomedical Imaging (R.S., M.M., N.W., R.G.), Department of Epidemiology and Biostatistics (R.S.), and Philip R. Lee Institute for Health Policy Studies (R.S.), University of California, San Francisco, 350 Parnassus Ave, Suite 307C, San Francisco, CA 94143-0336; Division of Biostatistics, Department of Public Health Sciences (Y.W., D.L.M.), and Department of Radiology (A.S., J.M.B., R.L.), University of California, Davis, Davis, Calif; Department of Radiology, University of California, San Diego, San Diego, Calif (T.R.Y., D.J.H.); Department of Radiological Sciences, University of California, Irvine, Orange County, Calif (M.K.); and Group Health Research Institute, Group Health Cooperative, Seattle, Wash (D.L.M.)
| | - Robert Gould
- From the Department of Radiology and Biomedical Imaging (R.S., M.M., N.W., R.G.), Department of Epidemiology and Biostatistics (R.S.), and Philip R. Lee Institute for Health Policy Studies (R.S.), University of California, San Francisco, 350 Parnassus Ave, Suite 307C, San Francisco, CA 94143-0336; Division of Biostatistics, Department of Public Health Sciences (Y.W., D.L.M.), and Department of Radiology (A.S., J.M.B., R.L.), University of California, Davis, Davis, Calif; Department of Radiology, University of California, San Diego, San Diego, Calif (T.R.Y., D.J.H.); Department of Radiological Sciences, University of California, Irvine, Orange County, Calif (M.K.); and Group Health Research Institute, Group Health Cooperative, Seattle, Wash (D.L.M.)
| | - Anthony Seibert
- From the Department of Radiology and Biomedical Imaging (R.S., M.M., N.W., R.G.), Department of Epidemiology and Biostatistics (R.S.), and Philip R. Lee Institute for Health Policy Studies (R.S.), University of California, San Francisco, 350 Parnassus Ave, Suite 307C, San Francisco, CA 94143-0336; Division of Biostatistics, Department of Public Health Sciences (Y.W., D.L.M.), and Department of Radiology (A.S., J.M.B., R.L.), University of California, Davis, Davis, Calif; Department of Radiology, University of California, San Diego, San Diego, Calif (T.R.Y., D.J.H.); Department of Radiological Sciences, University of California, Irvine, Orange County, Calif (M.K.); and Group Health Research Institute, Group Health Cooperative, Seattle, Wash (D.L.M.)
| | - John M Boone
- From the Department of Radiology and Biomedical Imaging (R.S., M.M., N.W., R.G.), Department of Epidemiology and Biostatistics (R.S.), and Philip R. Lee Institute for Health Policy Studies (R.S.), University of California, San Francisco, 350 Parnassus Ave, Suite 307C, San Francisco, CA 94143-0336; Division of Biostatistics, Department of Public Health Sciences (Y.W., D.L.M.), and Department of Radiology (A.S., J.M.B., R.L.), University of California, Davis, Davis, Calif; Department of Radiology, University of California, San Diego, San Diego, Calif (T.R.Y., D.J.H.); Department of Radiological Sciences, University of California, Irvine, Orange County, Calif (M.K.); and Group Health Research Institute, Group Health Cooperative, Seattle, Wash (D.L.M.)
| | - Mayil Krishnam
- From the Department of Radiology and Biomedical Imaging (R.S., M.M., N.W., R.G.), Department of Epidemiology and Biostatistics (R.S.), and Philip R. Lee Institute for Health Policy Studies (R.S.), University of California, San Francisco, 350 Parnassus Ave, Suite 307C, San Francisco, CA 94143-0336; Division of Biostatistics, Department of Public Health Sciences (Y.W., D.L.M.), and Department of Radiology (A.S., J.M.B., R.L.), University of California, Davis, Davis, Calif; Department of Radiology, University of California, San Diego, San Diego, Calif (T.R.Y., D.J.H.); Department of Radiological Sciences, University of California, Irvine, Orange County, Calif (M.K.); and Group Health Research Institute, Group Health Cooperative, Seattle, Wash (D.L.M.)
| | - Ramit Lamba
- From the Department of Radiology and Biomedical Imaging (R.S., M.M., N.W., R.G.), Department of Epidemiology and Biostatistics (R.S.), and Philip R. Lee Institute for Health Policy Studies (R.S.), University of California, San Francisco, 350 Parnassus Ave, Suite 307C, San Francisco, CA 94143-0336; Division of Biostatistics, Department of Public Health Sciences (Y.W., D.L.M.), and Department of Radiology (A.S., J.M.B., R.L.), University of California, Davis, Davis, Calif; Department of Radiology, University of California, San Diego, San Diego, Calif (T.R.Y., D.J.H.); Department of Radiological Sciences, University of California, Irvine, Orange County, Calif (M.K.); and Group Health Research Institute, Group Health Cooperative, Seattle, Wash (D.L.M.)
| | - David J Hall
- From the Department of Radiology and Biomedical Imaging (R.S., M.M., N.W., R.G.), Department of Epidemiology and Biostatistics (R.S.), and Philip R. Lee Institute for Health Policy Studies (R.S.), University of California, San Francisco, 350 Parnassus Ave, Suite 307C, San Francisco, CA 94143-0336; Division of Biostatistics, Department of Public Health Sciences (Y.W., D.L.M.), and Department of Radiology (A.S., J.M.B., R.L.), University of California, Davis, Davis, Calif; Department of Radiology, University of California, San Diego, San Diego, Calif (T.R.Y., D.J.H.); Department of Radiological Sciences, University of California, Irvine, Orange County, Calif (M.K.); and Group Health Research Institute, Group Health Cooperative, Seattle, Wash (D.L.M.)
| | - Diana L Miglioretti
- From the Department of Radiology and Biomedical Imaging (R.S., M.M., N.W., R.G.), Department of Epidemiology and Biostatistics (R.S.), and Philip R. Lee Institute for Health Policy Studies (R.S.), University of California, San Francisco, 350 Parnassus Ave, Suite 307C, San Francisco, CA 94143-0336; Division of Biostatistics, Department of Public Health Sciences (Y.W., D.L.M.), and Department of Radiology (A.S., J.M.B., R.L.), University of California, Davis, Davis, Calif; Department of Radiology, University of California, San Diego, San Diego, Calif (T.R.Y., D.J.H.); Department of Radiological Sciences, University of California, Irvine, Orange County, Calif (M.K.); and Group Health Research Institute, Group Health Cooperative, Seattle, Wash (D.L.M.)
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Hall DJ, Gentile LF, Duckworth LV, Shaw CM, Singhal D, Spiguel LRP. Calciphylaxis of the Breast: A Case Report and Literature Review. Breast J 2016; 22:568-72. [DOI: 10.1111/tbj.12632] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- David J. Hall
- Department of Surgery; University of Florida College of Medicine; Gainesville Florida
| | - Lori F. Gentile
- Department of Surgery; University of Florida College of Medicine; Gainesville Florida
| | - Lizette V. Duckworth
- Department of Pathology; University of Florida College of Medicine; Gainesville Florida
| | - Christiana M. Shaw
- Department of Surgery; University of Florida College of Medicine; Gainesville Florida
| | - Dhruv Singhal
- Department of Surgery; University of Florida College of Medicine; Gainesville Florida
- Division of Plastic and Reconstructive Surgery; University of Florida College of Medicine; Gainesville Florida
| | - Lisa R. P. Spiguel
- Department of Surgery; University of Florida College of Medicine; Gainesville Florida
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Hall DJ, Martin CG, Welford M, Debbert S. An Inquiry‐based Exercise in Medicinal Chemistry: synthesis of a molecular library and screening for potential anti‐malarial and anti‐inflammatory compounds. FASEB J 2016. [DOI: 10.1096/fasebj.30.1_supplement.880.3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Liu X, Braun GB, Zhong H, Hall DJ, Han W, Qin M, Zhao C, Wang M, She ZG, Cao C, Sailor MJ, Stallcup WB, Ruoslahti E, Sugahara KN. Tumor-Targeted Multimodal Optical Imaging with Versatile Cadmium-Free Quantum Dots. Adv Funct Mater 2016; 26:267-276. [PMID: 27441036 PMCID: PMC4948596 DOI: 10.1002/adfm.201503453] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
The rapid development of fluorescence imaging technologies requires concurrent improvements in the performance of fluorescent probes. Quantum dots have been extensively used as an imaging probe in various research areas because of their inherent advantages based on unique optical and electronic properties. However, their clinical translation has been limited by the potential toxicity especially from cadmium. Here, a versatile bioimaging probe is developed by using highly luminescent cadmium-free CuInSe2/ZnS core/shell quantum dots conjugated with CGKRK (Cys-Gly-Lys-Arg-Lys) tumor-targeting peptides. This probe exhibits excellent photostability, reasonably long circulation time, minimal toxicity, and strong tumor-specific homing property. The most important feature of this probe is that it shows distinctive versatility in tumor-targeted multimodal imaging including near-infrared, time-gated, and two-photon imaging in different tumor models. In a glioblastoma mouse model, the targeted probe clearly denotes tumor boundaries and positively labels a population of diffusely infiltrating tumor cells, suggesting its utility in precise tumor detection during surgery. This work lays a foundation for potential clinical translation of the probe.
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Affiliation(s)
- Xiangyou Liu
- Cancer Research Center, Sanford Burnham Prebys, Medical Discovery Institute, La Jolla, CA 92037, USA
- Department of Surgery, Herbert Irving Comprehensive Cancer Center, Columbia University College of Physicians and Surgeons, New York, NY 10032, USA
| | - Gary B. Braun
- Cancer Research Center, Sanford Burnham Prebys, Medical Discovery Institute, La Jolla, CA 92037, USA
- Center for Nanomedicine and Department of Molecular, Cellular and Developmental Biology, University of California, Santa Barbara, CA 93106, USA
| | - Haizheng Zhong
- Beijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China
| | - David J. Hall
- Moores Cancer Center, Department of Radiology, University of California, San Diego, La Jolla, CA 92093, USA
| | - Wenlong Han
- Cancer Research Center, Sanford Burnham Prebys, Medical Discovery Institute, La Jolla, CA 92037, USA
| | - Mingde Qin
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093, USA
| | - Chuanzhen Zhao
- Beijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China
| | - Meina Wang
- Research Center of Materials Science, Beijing Institute of Technology, Beijing 100081, P. R. China
| | - Zhi-Gang She
- Cancer Research Center, Sanford Burnham Prebys, Medical Discovery Institute, La Jolla, CA 92037, USA
| | - Chuanbao Cao
- Research Center of Materials Science, Beijing Institute of Technology, Beijing 100081, P. R. China
| | - Michael J. Sailor
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093, USA
| | - William B. Stallcup
- Cancer Research Center, Sanford Burnham Prebys, Medical Discovery Institute, La Jolla, CA 92037, USA
| | - Erkki Ruoslahti
- Cancer Research Center, Sanford Burnham Prebys, Medical Discovery Institute, La Jolla, CA 92037, USA
- Center for Nanomedicine and Department of Molecular, Cellular and Developmental Biology, University of California, Santa Barbara, CA 93106, USA
| | - Kazuki N. Sugahara
- Cancer Research Center, Sanford Burnham Prebys, Medical Discovery Institute, La Jolla, CA 92037, USA
- Department of Surgery, Herbert Irving Comprehensive Cancer Center, Columbia University College of Physicians and Surgeons, New York, NY 10032, USA
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Levoy CS, Hall DJ, Berman D. Achromobacter xylosoxidans endocarditis and septic arthritis in an infant affected by generalized arterial calcification of infancy. JMM Case Rep 2015. [DOI: 10.1099/jmmcr.0.005006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Craig S. Levoy
- Department of Family Medicine, Bayfront Health, 700 Sixth Street South, St Petersburg, FL 33701, USA
| | - David J. Hall
- Division of General Pediatrics and Adolescent Medicine, Johns Hopkins University School of Medicine and All Children's Hospital Johns Hopkins Medicine, 601 Fifth Street South, St Petersburg, FL 33701, USA
| | - David Berman
- Division of Pediatric Infectious Diseases, All Children's Hospital Johns Hopkins Medicine, 601 Fifth Street South, St Petersburg, FL 33701, USA
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35
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Callmann CE, Barback CV, Thompson MP, Hall DJ, Mattrey RF, Gianneschi NC. Therapeutic Enzyme-Responsive Nanoparticles for Targeted Delivery and Accumulation in Tumors. Adv Mater 2015; 27:4611-5. [PMID: 26178920 PMCID: PMC4699560 DOI: 10.1002/adma.201501803] [Citation(s) in RCA: 181] [Impact Index Per Article: 20.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Revised: 05/31/2015] [Indexed: 05/21/2023]
Abstract
An enzyme-responsive, paclitaxel-loaded nanoparticle is described and assessed in vivo in a human fibrosarcoma murine xenograft. This work represents a proof-of-concept study demonstrating the utility of enzyme-responsive nanoscale drug carriers capable of targeted accumulation and retention in tumor tissue in response to overexpressed endogenous enzymes.
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Affiliation(s)
- Cassandra E. Callmann
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093, USA
| | | | - Matthew P. Thompson
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093, USA
| | - David J. Hall
- Department of Radiology, University of California, San Diego, La Jolla, CA 92093, USA
| | - Robert F. Mattrey
- Department of Radiology, University of California, San Diego, La Jolla, CA 92093, USA
| | - Nathan C. Gianneschi
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093, USA
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36
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Smith-Bindman R, Moghadassi M, Wilson N, Nelson TR, Boone JM, Cagnon CH, Gould R, Hall DJ, Krishnam M, Lamba R, McNitt-Gray M, Seibert A, Miglioretti DL. Radiation Doses in Consecutive CT Examinations from Five University of California Medical Centers. Radiology 2015; 277:134-41. [PMID: 25988262 DOI: 10.1148/radiol.2015142728] [Citation(s) in RCA: 86] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
PURPOSE To summarize data on computed tomographic (CT) radiation doses collected from consecutive CT examinations performed at 12 facilities that can contribute to the creation of reference levels. MATERIALS AND METHODS The study was approved by the institutional review boards of the collaborating institutions and was compliant with HIPAA. Radiation dose metrics were prospectively and electronically collected from 199 656 consecutive CT examinations in 83 181 adults and 3871 consecutive CT examinations in 2609 children at the five University of California medical centers during 2013. The median volume CT dose index (CTDIvol), dose-length product (DLP), and effective dose, along with the interquartile range (IQR), were calculated separately for adults and children and stratified according to anatomic region. Distributions for DLP and effective dose are reported for single-phase examinations, multiphase examinations, and all examinations. RESULTS For adults, the median CTDIvol was 50 mGy (IQR, 37-62 mGy) for the head, 12 mGy (IQR, 7-17 mGy) for the chest, and 12 mGy (IQR, 8-17 mGy) for the abdomen. The median DLPs for single-phase, multiphase, and all examinations, respectively, were as follows: head, 880 mGy · cm (IQR, 640-1120 mGy · cm), 1550 mGy · cm (IQR, 1150-2130 mGy · cm), and 960 mGy · cm (IQR, 690-1300 mGy · cm); chest, 420 mGy · cm (IQR, 260-610 mGy · cm), 880 mGy · cm (IQR, 570-1430 mGy · cm), and 550 mGy · cm (IQR 320-830 mGy · cm); and abdomen, 580 mGy · cm (IQR, 360-860 mGy · cm), 1220 mGy · cm (IQR, 850-1790 mGy · cm), and 960 mGy · cm (IQR, 600-1460 mGy · cm). Median effective doses for single-phase, multiphase, and all examinations, respectively, were as follows: head, 2 mSv (IQR, 1-3 mSv), 4 mSv (IQR, 3-8 mSv), and 2 mSv (IQR, 2-3 mSv); chest, 9 mSv (IQR, 5-13 mSv), 18 mSv (IQR, 12-29 mSv), and 11 mSv (IQR, 6-18 mSv); and abdomen, 10 mSv (IQR, 6-16 mSv), 22 mSv (IQR, 15-32 mSv), and 17 mSv (IQR, 11-26 mSv). In general, values for children were approximately 50% those for adults in the head and 25% those for adults in the chest and abdomen. CONCLUSION These summary dose data provide a starting point for institutional evaluation of CT radiation doses.
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Affiliation(s)
- Rebecca Smith-Bindman
- From the Department of Radiology and Biomedical Imaging, University of California-San Francisco, 350 Parnassus Ave, Suite 307C, San Francisco, CA 94143-0336 (R.S.B., M.M., N.W., R.G.); Department of Epidemiology and Biostatistics and the Philip R. Lee Institute for Health Policy Studies, University of California-San Francisco, San Francisco, Calif (R.S.B.); Department of Radiology, University of California-San Diego, San Diego, Calif (T.R.N., D.J.H.); Department of Radiology (J.M.B., R.L., A.S.) and Division of Biostatistics, Department of Public Health Sciences (D.L.M.), University of California-Davis, Davis, Calif; Department of Radiology, University of California-Los Angeles, Los Angeles, Calif (C.H.C., M.M.G.); Department of Radiological Sciences, University of California-Irvine, Irvine, Calif (M.K.); and Group Health Research Institute, Group Health Cooperative, Seattle, Wash (D.L.M.)
| | - Michelle Moghadassi
- From the Department of Radiology and Biomedical Imaging, University of California-San Francisco, 350 Parnassus Ave, Suite 307C, San Francisco, CA 94143-0336 (R.S.B., M.M., N.W., R.G.); Department of Epidemiology and Biostatistics and the Philip R. Lee Institute for Health Policy Studies, University of California-San Francisco, San Francisco, Calif (R.S.B.); Department of Radiology, University of California-San Diego, San Diego, Calif (T.R.N., D.J.H.); Department of Radiology (J.M.B., R.L., A.S.) and Division of Biostatistics, Department of Public Health Sciences (D.L.M.), University of California-Davis, Davis, Calif; Department of Radiology, University of California-Los Angeles, Los Angeles, Calif (C.H.C., M.M.G.); Department of Radiological Sciences, University of California-Irvine, Irvine, Calif (M.K.); and Group Health Research Institute, Group Health Cooperative, Seattle, Wash (D.L.M.)
| | - Nicole Wilson
- From the Department of Radiology and Biomedical Imaging, University of California-San Francisco, 350 Parnassus Ave, Suite 307C, San Francisco, CA 94143-0336 (R.S.B., M.M., N.W., R.G.); Department of Epidemiology and Biostatistics and the Philip R. Lee Institute for Health Policy Studies, University of California-San Francisco, San Francisco, Calif (R.S.B.); Department of Radiology, University of California-San Diego, San Diego, Calif (T.R.N., D.J.H.); Department of Radiology (J.M.B., R.L., A.S.) and Division of Biostatistics, Department of Public Health Sciences (D.L.M.), University of California-Davis, Davis, Calif; Department of Radiology, University of California-Los Angeles, Los Angeles, Calif (C.H.C., M.M.G.); Department of Radiological Sciences, University of California-Irvine, Irvine, Calif (M.K.); and Group Health Research Institute, Group Health Cooperative, Seattle, Wash (D.L.M.)
| | - Thomas R Nelson
- From the Department of Radiology and Biomedical Imaging, University of California-San Francisco, 350 Parnassus Ave, Suite 307C, San Francisco, CA 94143-0336 (R.S.B., M.M., N.W., R.G.); Department of Epidemiology and Biostatistics and the Philip R. Lee Institute for Health Policy Studies, University of California-San Francisco, San Francisco, Calif (R.S.B.); Department of Radiology, University of California-San Diego, San Diego, Calif (T.R.N., D.J.H.); Department of Radiology (J.M.B., R.L., A.S.) and Division of Biostatistics, Department of Public Health Sciences (D.L.M.), University of California-Davis, Davis, Calif; Department of Radiology, University of California-Los Angeles, Los Angeles, Calif (C.H.C., M.M.G.); Department of Radiological Sciences, University of California-Irvine, Irvine, Calif (M.K.); and Group Health Research Institute, Group Health Cooperative, Seattle, Wash (D.L.M.)
| | - John M Boone
- From the Department of Radiology and Biomedical Imaging, University of California-San Francisco, 350 Parnassus Ave, Suite 307C, San Francisco, CA 94143-0336 (R.S.B., M.M., N.W., R.G.); Department of Epidemiology and Biostatistics and the Philip R. Lee Institute for Health Policy Studies, University of California-San Francisco, San Francisco, Calif (R.S.B.); Department of Radiology, University of California-San Diego, San Diego, Calif (T.R.N., D.J.H.); Department of Radiology (J.M.B., R.L., A.S.) and Division of Biostatistics, Department of Public Health Sciences (D.L.M.), University of California-Davis, Davis, Calif; Department of Radiology, University of California-Los Angeles, Los Angeles, Calif (C.H.C., M.M.G.); Department of Radiological Sciences, University of California-Irvine, Irvine, Calif (M.K.); and Group Health Research Institute, Group Health Cooperative, Seattle, Wash (D.L.M.)
| | - Christopher H Cagnon
- From the Department of Radiology and Biomedical Imaging, University of California-San Francisco, 350 Parnassus Ave, Suite 307C, San Francisco, CA 94143-0336 (R.S.B., M.M., N.W., R.G.); Department of Epidemiology and Biostatistics and the Philip R. Lee Institute for Health Policy Studies, University of California-San Francisco, San Francisco, Calif (R.S.B.); Department of Radiology, University of California-San Diego, San Diego, Calif (T.R.N., D.J.H.); Department of Radiology (J.M.B., R.L., A.S.) and Division of Biostatistics, Department of Public Health Sciences (D.L.M.), University of California-Davis, Davis, Calif; Department of Radiology, University of California-Los Angeles, Los Angeles, Calif (C.H.C., M.M.G.); Department of Radiological Sciences, University of California-Irvine, Irvine, Calif (M.K.); and Group Health Research Institute, Group Health Cooperative, Seattle, Wash (D.L.M.)
| | - Robert Gould
- From the Department of Radiology and Biomedical Imaging, University of California-San Francisco, 350 Parnassus Ave, Suite 307C, San Francisco, CA 94143-0336 (R.S.B., M.M., N.W., R.G.); Department of Epidemiology and Biostatistics and the Philip R. Lee Institute for Health Policy Studies, University of California-San Francisco, San Francisco, Calif (R.S.B.); Department of Radiology, University of California-San Diego, San Diego, Calif (T.R.N., D.J.H.); Department of Radiology (J.M.B., R.L., A.S.) and Division of Biostatistics, Department of Public Health Sciences (D.L.M.), University of California-Davis, Davis, Calif; Department of Radiology, University of California-Los Angeles, Los Angeles, Calif (C.H.C., M.M.G.); Department of Radiological Sciences, University of California-Irvine, Irvine, Calif (M.K.); and Group Health Research Institute, Group Health Cooperative, Seattle, Wash (D.L.M.)
| | - David J Hall
- From the Department of Radiology and Biomedical Imaging, University of California-San Francisco, 350 Parnassus Ave, Suite 307C, San Francisco, CA 94143-0336 (R.S.B., M.M., N.W., R.G.); Department of Epidemiology and Biostatistics and the Philip R. Lee Institute for Health Policy Studies, University of California-San Francisco, San Francisco, Calif (R.S.B.); Department of Radiology, University of California-San Diego, San Diego, Calif (T.R.N., D.J.H.); Department of Radiology (J.M.B., R.L., A.S.) and Division of Biostatistics, Department of Public Health Sciences (D.L.M.), University of California-Davis, Davis, Calif; Department of Radiology, University of California-Los Angeles, Los Angeles, Calif (C.H.C., M.M.G.); Department of Radiological Sciences, University of California-Irvine, Irvine, Calif (M.K.); and Group Health Research Institute, Group Health Cooperative, Seattle, Wash (D.L.M.)
| | - Mayil Krishnam
- From the Department of Radiology and Biomedical Imaging, University of California-San Francisco, 350 Parnassus Ave, Suite 307C, San Francisco, CA 94143-0336 (R.S.B., M.M., N.W., R.G.); Department of Epidemiology and Biostatistics and the Philip R. Lee Institute for Health Policy Studies, University of California-San Francisco, San Francisco, Calif (R.S.B.); Department of Radiology, University of California-San Diego, San Diego, Calif (T.R.N., D.J.H.); Department of Radiology (J.M.B., R.L., A.S.) and Division of Biostatistics, Department of Public Health Sciences (D.L.M.), University of California-Davis, Davis, Calif; Department of Radiology, University of California-Los Angeles, Los Angeles, Calif (C.H.C., M.M.G.); Department of Radiological Sciences, University of California-Irvine, Irvine, Calif (M.K.); and Group Health Research Institute, Group Health Cooperative, Seattle, Wash (D.L.M.)
| | - Ramit Lamba
- From the Department of Radiology and Biomedical Imaging, University of California-San Francisco, 350 Parnassus Ave, Suite 307C, San Francisco, CA 94143-0336 (R.S.B., M.M., N.W., R.G.); Department of Epidemiology and Biostatistics and the Philip R. Lee Institute for Health Policy Studies, University of California-San Francisco, San Francisco, Calif (R.S.B.); Department of Radiology, University of California-San Diego, San Diego, Calif (T.R.N., D.J.H.); Department of Radiology (J.M.B., R.L., A.S.) and Division of Biostatistics, Department of Public Health Sciences (D.L.M.), University of California-Davis, Davis, Calif; Department of Radiology, University of California-Los Angeles, Los Angeles, Calif (C.H.C., M.M.G.); Department of Radiological Sciences, University of California-Irvine, Irvine, Calif (M.K.); and Group Health Research Institute, Group Health Cooperative, Seattle, Wash (D.L.M.)
| | - Michael McNitt-Gray
- From the Department of Radiology and Biomedical Imaging, University of California-San Francisco, 350 Parnassus Ave, Suite 307C, San Francisco, CA 94143-0336 (R.S.B., M.M., N.W., R.G.); Department of Epidemiology and Biostatistics and the Philip R. Lee Institute for Health Policy Studies, University of California-San Francisco, San Francisco, Calif (R.S.B.); Department of Radiology, University of California-San Diego, San Diego, Calif (T.R.N., D.J.H.); Department of Radiology (J.M.B., R.L., A.S.) and Division of Biostatistics, Department of Public Health Sciences (D.L.M.), University of California-Davis, Davis, Calif; Department of Radiology, University of California-Los Angeles, Los Angeles, Calif (C.H.C., M.M.G.); Department of Radiological Sciences, University of California-Irvine, Irvine, Calif (M.K.); and Group Health Research Institute, Group Health Cooperative, Seattle, Wash (D.L.M.)
| | - Anthony Seibert
- From the Department of Radiology and Biomedical Imaging, University of California-San Francisco, 350 Parnassus Ave, Suite 307C, San Francisco, CA 94143-0336 (R.S.B., M.M., N.W., R.G.); Department of Epidemiology and Biostatistics and the Philip R. Lee Institute for Health Policy Studies, University of California-San Francisco, San Francisco, Calif (R.S.B.); Department of Radiology, University of California-San Diego, San Diego, Calif (T.R.N., D.J.H.); Department of Radiology (J.M.B., R.L., A.S.) and Division of Biostatistics, Department of Public Health Sciences (D.L.M.), University of California-Davis, Davis, Calif; Department of Radiology, University of California-Los Angeles, Los Angeles, Calif (C.H.C., M.M.G.); Department of Radiological Sciences, University of California-Irvine, Irvine, Calif (M.K.); and Group Health Research Institute, Group Health Cooperative, Seattle, Wash (D.L.M.)
| | - Diana L Miglioretti
- From the Department of Radiology and Biomedical Imaging, University of California-San Francisco, 350 Parnassus Ave, Suite 307C, San Francisco, CA 94143-0336 (R.S.B., M.M., N.W., R.G.); Department of Epidemiology and Biostatistics and the Philip R. Lee Institute for Health Policy Studies, University of California-San Francisco, San Francisco, Calif (R.S.B.); Department of Radiology, University of California-San Diego, San Diego, Calif (T.R.N., D.J.H.); Department of Radiology (J.M.B., R.L., A.S.) and Division of Biostatistics, Department of Public Health Sciences (D.L.M.), University of California-Davis, Davis, Calif; Department of Radiology, University of California-Los Angeles, Los Angeles, Calif (C.H.C., M.M.G.); Department of Radiological Sciences, University of California-Irvine, Irvine, Calif (M.K.); and Group Health Research Institute, Group Health Cooperative, Seattle, Wash (D.L.M.)
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Woodard GE, Ji Y, Christopherson GT, Wolcott KM, Hall DJ, Jackson WM, Nesti LJ. Characterization of discrete subpopulations of progenitor cells in traumatic human extremity wounds. PLoS One 2014; 9:e114318. [PMID: 25490403 PMCID: PMC4260839 DOI: 10.1371/journal.pone.0114318] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2014] [Accepted: 11/05/2014] [Indexed: 12/22/2022] Open
Abstract
Here we show that distinct subpopulations of cells exist within traumatic human extremity wounds, each having the ability to differentiate into multiple cells types in vitro. A crude cell suspension derived from traumatized muscle was positively sorted for CD29, CD31, CD34, CD56 or CD91. The cell suspension was also simultaneously negatively sorted for either CD45 or CD117 to exclude hematopoietic stem cells. These subpopulations varied in terms their total numbers and their abilities to grow, migrate, differentiate and secrete cytokines. While all five subpopulations demonstrated equal abilities to undergo osteogenesis, they were distinct in their ability to undergo adipogenesis and vascular endotheliogenesis. The most abundant subpopulations were CD29+ and CD34+, which overlapped significantly. The CD29+ and CD34+ cells had the greatest proliferative and migratory capacity while the CD56+ subpopulation produced the highest amounts of TGFß1 and TGFß2. When cultured under endothelial differentiation conditions the CD29+ and CD34+ cells expressed VE-cadherin, Tie2 and CD31, all markers of endothelial cells. These data indicate that while there are multiple cell types within traumatized muscle that have osteogenic differentiation capacity and may contribute to bone formation in post-traumatic heterotopic ossification (HO), the major contributory cell types are CD29+ and CD34+, which demonstrate endothelial progenitor cell characteristics.
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Affiliation(s)
- Geoffrey E. Woodard
- Department of Surgery, Uniformed Services University of Health Sciences, Bethesda, MD, United States of America
- * E-mail: (GEW); (LJN)
| | - Youngmi Ji
- Clinical and Experimental Orthopaedics, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD, United States of America
| | - Gregory T. Christopherson
- Clinical and Experimental Orthopaedics, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD, United States of America
| | - Karen M. Wolcott
- Laboratory of Genome Integrity, Nation Cancer Institute, National Institutes of Health, Bethesda, MD, United States of America
| | - David J. Hall
- Clinical and Experimental Orthopaedics, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD, United States of America
| | - Wesley M. Jackson
- Department of Surgery, Uniformed Services University of Health Sciences, Bethesda, MD, United States of America
| | - Leon J. Nesti
- Department of Surgery, Uniformed Services University of Health Sciences, Bethesda, MD, United States of America
- Clinical and Experimental Orthopaedics, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD, United States of America
- Department of Orthopaedic Surgery, Walter Reed National Military Medical Center, Bethesda, MD, United States of America
- * E-mail: (GEW); (LJN)
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Liss MA, Stroup SP, Qin Z, Hoh CK, Hall DJ, Vera DR, Kane CJ. Robotic-assisted fluorescence sentinel lymph node mapping using multimodal image guidance in an animal model. Urology 2014; 84:982.e9-14. [PMID: 25139676 DOI: 10.1016/j.urology.2014.06.021] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Revised: 05/11/2014] [Accepted: 06/13/2014] [Indexed: 10/24/2022]
Abstract
OBJECTIVE To investigate positron emission tomography/computed tomography (PET/CT) preoperative imaging and intraoperative detection of a fluorescent-labeled receptor-targeted radiopharmaceutical in a prostate cancer animal model. MATERIALS AND METHODS Three male beagle dogs underwent an intraprostatic injection of fluorescent-tagged tilmanocept, radiolabeled with both gallium Ga-68 and technetium Tc-99m. One hour after injection, a pelvic PET/CT scan was performed for preoperative sentinel lymph node (SLN) mapping. The definition of SLN was a standardized uptake value that exceeded 5% of the lymph node with the highest standardized uptake value. Thirty-six hours later, we performed robotic-assisted SLN dissection using a fluorescence-capable camera system. Fluorescent lymph nodes were clipped, the abdomen was opened, and the pelvic and retroperitoneal nodes were excised. All excised nodal packets were assayed by in vitro nuclear counting and reported as the percentage of injected dose. RESULTS Preoperative PET/CT imaging identified a median of 3 SLNs per animal. All SLNs (100%) identified by the PET/CT were fluorescent during robotic-assisted lymph node dissection. Of all fluorescent nodes visualized by the camera system, 9 of 12 nodes (75%) satisfied the 5% rule defined by the PET/CT scan. The 2 lymph nodes that did not qualify accumulated <0.002% of the injected dose. CONCLUSION Fluorescent-labeled tilmanocept has optimal logistic properties to obtain preoperative PET/CT and subsequent real-time intraoperative confirmation during robotic-assisted SLN dissection.
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Affiliation(s)
- Michael A Liss
- Department of Urology, UC San Diego Health System, San Diego, CA; UCSD Moores Cancer Center, La Jolla, CA
| | | | - Zhengtao Qin
- Department of Radiology, University of California, San Diego, La Jolla, CA; UCSD In Vivo Cancer and Molecular Imaging Center, University of California, San Diego, La Jolla, CA; Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA
| | - Carl K Hoh
- UCSD Moores Cancer Center, La Jolla, CA; Department of Radiology, University of California, San Diego, La Jolla, CA; UCSD In Vivo Cancer and Molecular Imaging Center, University of California, San Diego, La Jolla, CA; Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA
| | - David J Hall
- UCSD Moores Cancer Center, La Jolla, CA; Department of Radiology, University of California, San Diego, La Jolla, CA; UCSD In Vivo Cancer and Molecular Imaging Center, University of California, San Diego, La Jolla, CA
| | - David R Vera
- UCSD Moores Cancer Center, La Jolla, CA; Department of Radiology, University of California, San Diego, La Jolla, CA; UCSD In Vivo Cancer and Molecular Imaging Center, University of California, San Diego, La Jolla, CA; Department of Surgery, University of California, San Diego, La Jolla, CA
| | - Christopher J Kane
- Department of Urology, UC San Diego Health System, San Diego, CA; UCSD Moores Cancer Center, La Jolla, CA; Department of Surgery, University of California, San Diego, La Jolla, CA.
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Hoh CK, Qin Z, Hall DJ, Vera DR. Receptor-mediated binding of [68Ga]tilmanocept by mesangial cells. Nucl Med Biol 2014. [DOI: 10.1016/j.nucmedbio.2014.05.133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Liss MA, Farshchi-Heydari S, Qin Z, Hickey SA, Hall DJ, Kane CJ, Vera DR. Preclinical evaluation of robotic-assisted sentinel lymph node fluorescence imaging. J Nucl Med 2014; 55:1552-6. [PMID: 25024425 DOI: 10.2967/jnumed.114.140871] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
UNLABELLED An ideal substance to provide convenient and accurate targeting for sentinel lymph node (SLN) mapping during robotic-assisted surgery has yet to be found. We used an animal model to determine the ability of the FireFly camera system to detect fluorescent SLNs after administration of a dual-labeled molecular imaging agent. METHODS We injected the footpads of New Zealand White rabbits with 1.7 or 8.4 nmol of tilmanocept labeled with (99m)Tc and a near-infrared fluorophore, IRDye800CW. One and 36 h after injection, popliteal lymph nodes, representing the SLNs, were dissected with the assistance of the FireFly camera system, a fluorescence-capable endoscopic imaging system. After excision of the paraaortic lymph nodes, which represented non-SLNs, we assayed all lymph nodes for radioactivity and fluorescence intensity. RESULTS Fluorescence within all popliteal lymph nodes was easily detected by the FireFly camera system. Fluorescence within the lymph channel could be imaged during the 1-h studies. When compared with the paraaortic lymph nodes, the popliteal lymph nodes retain greater than 95% of the radioactivity at both 1 and 36 h after injection. At both doses (1.7 and 8.4 nmol), the popliteal nodes had higher (P < 0.050) optical fluorescence intensity than the paraaortic nodes at the 1- and 36-h time points. CONCLUSION The FireFly camera system can easily detect tilmanocept labeled with a near-infrared fluorophore at least 36 h after administration. This ability will permit image acquisition and subsequent verification of fluorescence-labeled SLNs during robotic-assisted surgery.
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Affiliation(s)
- Michael A Liss
- Department of Urology, University of California, San Diego, La Jolla, California UCSD Moores Cancer Center. University of California, San Diego, La Jolla, California
| | - Salman Farshchi-Heydari
- Department of Radiology, University of California, San Diego, La Jolla, California UCSD In Vivo Cancer and Molecular Imaging Center, University of California, San Diego, La Jolla, California
| | - Zhengtao Qin
- Department of Radiology, University of California, San Diego, La Jolla, California UCSD In Vivo Cancer and Molecular Imaging Center, University of California, San Diego, La Jolla, California Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California; and
| | - Sean A Hickey
- Department of Surgery, University of California, San Diego, La Jolla, California
| | - David J Hall
- Department of Radiology, University of California, San Diego, La Jolla, California UCSD In Vivo Cancer and Molecular Imaging Center, University of California, San Diego, La Jolla, California
| | - Christopher J Kane
- Department of Urology, University of California, San Diego, La Jolla, California UCSD Moores Cancer Center. University of California, San Diego, La Jolla, California Department of Surgery, University of California, San Diego, La Jolla, California
| | - David R Vera
- UCSD Moores Cancer Center. University of California, San Diego, La Jolla, California Department of Radiology, University of California, San Diego, La Jolla, California UCSD In Vivo Cancer and Molecular Imaging Center, University of California, San Diego, La Jolla, California Department of Surgery, University of California, San Diego, La Jolla, California
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Schuler BA, Schreiber MT, Li L, Mokry M, Kingdon ML, Raugi DN, Smith C, Hameister C, Racaniello VR, Hall DJ. Major and minor group rhinoviruses elicit differential signaling and cytokine responses as a function of receptor-mediated signal transduction. PLoS One 2014; 9:e93897. [PMID: 24736642 PMCID: PMC3988043 DOI: 10.1371/journal.pone.0093897] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2014] [Accepted: 03/08/2014] [Indexed: 11/18/2022] Open
Abstract
Major- and minor-group human rhinoviruses (HRV) enter their host by binding to the cell surface molecules ICAM-1 and LDL-R, respectively, which are present on both macrophages and epithelial cells. Although epithelial cells are the primary site of productive HRV infection, previous studies have implicated macrophages in establishing the cytokine dysregulation that occurs during rhinovirus-induced asthma exacerbations. Analysis of the transcriptome of primary human macrophages exposed to major- and minor-group HRV demonstrated differential gene expression. Alterations in gene expression were traced to differential mitochondrial activity and signaling pathway activation between two rhinovirus serotypes, HRV16 (major-group) and HRV1A (minor-group), upon initial HRV binding. Variances in phosphorylation of kinases (p38, JNK, ERK5) and transcription factors (ATF-2, CREB, CEBP-alpha) were observed between the major- and minor-group HRV treatments. Differential activation of signaling pathways led to changes in the production of the asthma-relevant cytokines CCL20, CCL2, and IL-10. This is the first report of genetically similar viruses eliciting dissimilar cytokine release, transcription factor phosphorylation, and MAPK activation from macrophages, suggesting that receptor use is a mechanism for establishing the inflammatory microenvironment in the human airway upon exposure to rhinovirus.
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Affiliation(s)
- Bryce A. Schuler
- Department of Chemistry, Lawrence University, Appleton, Wisconsin, United States of America
| | - Michael T. Schreiber
- Department of Chemistry, Lawrence University, Appleton, Wisconsin, United States of America
- Department of Microbiology & Immunology, Columbia University College of Physicians and Surgeons, New York, New York, United States of America
| | - LuYuan Li
- Department of Chemistry, Lawrence University, Appleton, Wisconsin, United States of America
| | - Michal Mokry
- Division of Pediatrics, Wilhelmina Children’s Hospital, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Megan L. Kingdon
- Department of Chemistry, Lawrence University, Appleton, Wisconsin, United States of America
| | - Dana N. Raugi
- Department of Chemistry, Lawrence University, Appleton, Wisconsin, United States of America
| | - Cosonya Smith
- Department of Chemistry, Lawrence University, Appleton, Wisconsin, United States of America
| | - Chelsea Hameister
- Department of Chemistry, Lawrence University, Appleton, Wisconsin, United States of America
| | - Vincent R. Racaniello
- Department of Microbiology & Immunology, Columbia University College of Physicians and Surgeons, New York, New York, United States of America
| | - David J. Hall
- Department of Chemistry, Lawrence University, Appleton, Wisconsin, United States of America
- * E-mail:
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Liss MA, Farchshchi-Heydari S, Qin Z, Hickey SA, Hall DJ, Vera DR, Kane CJ. PD4-02 FLUORESCENCE LABELED TILMANOCEPT DETECTION OF SENTINEL LYMPH NODES DURING ROBOTIC SURGERY IN AN ANIMAL MODEL. J Urol 2014. [DOI: 10.1016/j.juro.2014.02.223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Chien MP, Carlini AS, Hu D, Barback CV, Rush AM, Hall DJ, Orr G, Gianneschi NC. Enzyme-directed assembly of nanoparticles in tumors monitored by in vivo whole animal imaging and ex vivo super-resolution fluorescence imaging. J Am Chem Soc 2013; 135:18710-3. [PMID: 24308273 DOI: 10.1021/ja408182p] [Citation(s) in RCA: 94] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Matrix metalloproteinase enzymes, overexpressed in HT-1080 human fibrocarcinoma tumors, were used to guide the accumulation and retention of an enzyme-responsive nanoparticle in a xenograft mouse model. The nanoparticles were prepared as micelles from amphiphilic block copolymers bearing a simple hydrophobic block and a hydrophilic peptide brush. The polymers were end-labeled with Alexa Fluor 647 dyes leading to the formation of labeled micelles upon dialysis of the polymers from DMSO/DMF to aqueous buffer. This dye-labeling strategy allowed the presence of the retained material to be visualized via whole animal imaging in vivo and in ex vivo organ analysis following intratumoral injection into HT-1080 xenograft tumors. We propose that the material is retained by virtue of an enzyme-induced accumulation process whereby particles change morphology from 20 nm spherical micelles to micrometer-scale aggregates, kinetically trapping them within the tumor. This hypothesis is tested here via an unprecedented super-resolution fluorescence analysis of ex vivo tissue slices confirming a particle size increase occurs concomitantly with extended retention of responsive particles compared to unresponsive controls.
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Affiliation(s)
- Miao-Ping Chien
- Department of Chemistry and Biochemistry and ‡Department of Radiology, University of California, San Diego , La Jolla, California 92093, United States
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Qin Z, Hall DJ, Liss MA, Hoh CK, Kane CJ, Wallace AM, Vera DR. Optimization via specific fluorescence brightness of a receptor-targeted probe for optical imaging and positron emission tomography of sentinel lymph nodes. J Biomed Opt 2013; 18:101315. [PMID: 23958947 PMCID: PMC3745642 DOI: 10.1117/1.jbo.18.10.101315] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2013] [Revised: 06/05/2013] [Accepted: 06/27/2013] [Indexed: 05/20/2023]
Abstract
The optical properties of a receptor-targeted probe designed for dual-modality mapping of the sentinel lymph node (SLN) was optimized. Specific fluorescence brightness was used as the design criterion, which was defined as the fluorescence brightness per mole of the contrast agent. Adjusting the molar ratio of the coupling reactants, IRDye 800CW-NHS-ester and tilmanocept, enabled us to control the number of fluorescent molecules attached to each tilmanocept, which was quantified by H1 nuclear magnetic resonance spectroscopy. Quantum yields and molar absorptivities were measured for unconjugated IRDye 800CW and IRDye 800CW-tilmanocept (800CW-tilmanocept) preparations at 0.7, 1.5, 2.3, 2.9, and 3.8 dyes per tilmanocept. Specific fluorescence brightness was calculated by multiplication of the quantum yield by the molar absorptivity and the number of dyes per tilmanocept. It predicted that the preparation with 2.3 dyes per tilmanocept would exhibit the brightest signal, which was confirmed by fluorescence intensity measurements using three optical imaging systems. When radiolabeled with Ga68 and injected into the footpads of mice, the probe identified SLNs by both fluorescence and positron emission tomography (PET) while maintaining high percent extraction by the SLN. These studies demonstrated the feasibility of 800CW-tilmanocept for multimodal SLN mapping via fluorescence and PET-computed tomography imaging.
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Affiliation(s)
- Zhengtao Qin
- University of California, San Diego, Department of Chemistry, La Jolla, California 92093
- University of California, San Diego, Moores Cancer Center, La Jolla, California 92093
- University of California, San Diego, Department of Radiology, La Jolla, California 92093
- University of California, San Diego, In Vivo Cancer and Molecular Imaging Center, La Jolla, California 92093
| | - David J. Hall
- University of California, San Diego, Moores Cancer Center, La Jolla, California 92093
- University of California, San Diego, Department of Radiology, La Jolla, California 92093
- University of California, San Diego, In Vivo Cancer and Molecular Imaging Center, La Jolla, California 92093
| | - Michael A. Liss
- University of California, San Diego, Moores Cancer Center, La Jolla, California 92093
- University of California, San Diego, Department of Surgery, La Jolla, California 92093
| | - Carl K. Hoh
- University of California, San Diego, Moores Cancer Center, La Jolla, California 92093
- University of California, San Diego, Department of Radiology, La Jolla, California 92093
- University of California, San Diego, In Vivo Cancer and Molecular Imaging Center, La Jolla, California 92093
| | - Christopher J. Kane
- University of California, San Diego, Moores Cancer Center, La Jolla, California 92093
- University of California, San Diego, Department of Surgery, La Jolla, California 92093
| | - Anne M. Wallace
- University of California, San Diego, Moores Cancer Center, La Jolla, California 92093
- University of California, San Diego, Department of Surgery, La Jolla, California 92093
| | - David R. Vera
- University of California, San Diego, Moores Cancer Center, La Jolla, California 92093
- University of California, San Diego, Department of Radiology, La Jolla, California 92093
- University of California, San Diego, In Vivo Cancer and Molecular Imaging Center, La Jolla, California 92093
- University of California, San Diego, Department of Surgery, La Jolla, California 92093
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Chien MP, Thompson MP, Barback CV, Ku TH, Hall DJ, Gianneschi NC. Enzyme-directed assembly of a nanoparticle probe in tumor tissue. Adv Mater 2013; 25:3599-604. [PMID: 23712821 PMCID: PMC4108424 DOI: 10.1002/adma.201300823] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2013] [Revised: 04/07/2013] [Indexed: 05/21/2023]
Abstract
Enzyme-directed assembly in vivo: A targeting strategy is demonstrated, which leads to an active accumulation of nanoparticles by virtue of an assembly event specific to endogenous, enzymatic biochemical signals associated with tumor tissue. The viability of this approach is examined through a proof-of-concept study showing enzyme-directed particle targeting and accumulation in human xenograft tumors in mice following intravenous injection, and the retention of particles is demonstrated within tumors for extended periods of time.
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Affiliation(s)
- Miao-Ping Chien
- Department of Chemistry & Biochemistry, University of California, San Diego, La Jolla, CA 92093, USA
| | - Matthew P. Thompson
- Department of Chemistry & Biochemistry, University of California, San Diego, La Jolla, CA 92093, USA
| | - Christopher V. Barback
- Department of Radiology, School of Medicine, University of California, San Diego, La Jolla, CA 92093, USA
| | - Ti-Hsuan Ku
- Department of Chemistry & Biochemistry, University of California, San Diego, La Jolla, CA 92093, USA
| | - David J. Hall
- Department of Radiology, School of Medicine, University of California, San Diego, La Jolla, CA 92093, USA
| | - Nathan C. Gianneschi
- Department of Chemistry & Biochemistry, University of California, San Diego, La Jolla, CA 92093, USA
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Hall DJ, Wallis GA, Co-Vu JG, Lossius MN. Coarctation of the aorta in late adolescence. J Pediatr 2013; 162:646-646.e1. [PMID: 23102791 DOI: 10.1016/j.jpeds.2012.09.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2012] [Accepted: 09/13/2012] [Indexed: 11/20/2022]
Affiliation(s)
- David J Hall
- College of Medicine, University of Florida College of Medicine, Gainesville, FL, USA
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Schimler SD, Hall DJ, Debbert SL. Anticancer (hexacarbonyldicobalt)propargyl aryl ethers: Synthesis, antiproliferative activity, apoptosis induction, and effect on cellular oxidative stress. J Inorg Biochem 2013. [DOI: 10.1016/j.jinorgbio.2012.10.014] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Benchimol MJ, Hsu MJ, Schutt CE, Hall DJ, Mattrey RF, Esener SC. Phospholipid/Carbocyanine Dye-Shelled Microbubbles as Ultrasound-Modulated Fluorescent Contrast Agents. Soft Matter 2013; 9:2384-2388. [PMID: 23526919 PMCID: PMC3601761 DOI: 10.1039/c2sm26900g] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Fluorescent microbubbles have been fabricated with the capacity to have their emission modulated by ultrasound. These contrast agent particles could potentially be used in the future to extract fluorescence modulation from a strong light background to increase imaging depth and resolution in scattering media. Fluorescence intensity modulation was demonstrated at the ultrasound driving frequency.
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Affiliation(s)
- Michael J. Benchimol
- Department of Electrical & Computer Engineering, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | - Mark J. Hsu
- Department of Electrical & Computer Engineering, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | - Carolyn E. Schutt
- Department of Bioengineering, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | - David J. Hall
- Department of Radiology, University of California at San Diego, Moores Cancer Center, 3855 Health Sciences Drive, La Jolla, California 92093, USA
| | - Robert F. Mattrey
- Department of Radiology, University of California at San Diego, Moores Cancer Center, 3855 Health Sciences Drive, La Jolla, California 92093, USA
| | - Sadik C. Esener
- Department of Electrical & Computer Engineering, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
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Schreiber MT, Schuler B, Li L, Hall DJ. Activation of the small G-protein Rac by human rhinovirus attenuates the TLR3/IFN-α axis while promoting CCL2 release in human monocyte-lineage cells. Innate Immun 2012; 19:278-89. [PMID: 23060458 DOI: 10.1177/1753425912460709] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Although rhinoviral infections, a major cause of asthma exacerbations, occur predominantly in upper airway bronchial epithelial cells, monocytic-lineage cells are implicated in establishing the inflammatory microenvironment observed during the disease. Human rhinovirus (HRV) is unique in that nearly genetically identical viruses bind either the ICAM-1 or low-density lipoprotein receptor (LDL-R). Within minutes of binding, HRV is capable of eliciting a signaling response in both epithelial cells and monocyte-derived macrophages. It is unclear whether this signaling response is important to the subsequent release of inflammatory mediators, particularly in cells not capable of supporting viral replication. We show here that the small molecular mass G-protein Rac is activated following exposure of macrophages to HRV serotypes known to be ICAM-1- and LDL-R-tropic. We demonstrate that inhibiting Rac resulted in the upregulation of TLR3 in macrophages exposed to major- and minor-group HRV, and resulted in increased release of IFN-α. Furthermore, inhibiting Rac in HRV-exposed macrophages attenuated activation of the stress kinase p38 and release of the pro-inflammatory cytokine CCL2, but inhibiting Rac did not affect release of the pro-inflammatory cytokine CCL5. These findings suggest that Rac is an important regulator in establishing the inflammatory microenvironment that is initiated in the human airway upon exposure to rhinovirus.
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Hall DJ, Baz M, Daniels MJ, Staples ED, Klodell CT, Moldawer LL, Beaver TM. Immediate postoperative inflammatory response predicts long-term outcome in lung-transplant recipients. Interact Cardiovasc Thorac Surg 2012; 15:603-7. [PMID: 22815323 DOI: 10.1093/icvts/ivs330] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
OBJECTIVES Although lung transplantation is an accepted therapy for end-stage disease, recipient outcomes continue to be hindered by early primary graft dysfunction (PGD) as well as late rejection and bronchiolitis obliterans syndrome (BOS). We have previously shown that the pro-inflammatory cytokine response following transplantation correlates with the severity of PGD. We hypothesized that lung-transplant recipients with an increased inflammatory response immediately following surgery would also have a greater incidence of unfavorable long-term outcomes including rejection, BOS and ultimately death. METHODS A retrospective study of lung-transplant recipients (n = 19) for whom serial blood sampling of cytokines was performed for 24 h following transplantation between March 2002 and June 2003 at a single institution. Long-term follow-up was examined for rejection, BOS and survival. RESULTS Thirteen single and six bilateral lung recipients were examined. Eleven (58%) developed BOS and eight (42%) did not. Subgroup analysis revealed an association between elevated IL-6 concentrations 4 h after reperfusion of the allograft and development of BOS (P = 0.068). The correlation between IL-6 and survival time was found to be significant (corr = -0.46, P = 0.047), indicating that higher IL-6 response had shorter survival following transplantation. CONCLUSIONS An elevation in interleukin (IL)-6 concentration immediately following lung transplantation is associated with a trend towards development of bronchiolitis obliterans, rejection and significantly decreased survival time. Further studies are warranted to confirm the correlation between the immediate inflammatory response, PGD and BOS. Identification of patients at risk for BOS based on the cytokine response after surgery may allow for early intervention.
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Affiliation(s)
- David J Hall
- College of Medicine, University of Florida, Gainesville, FL 32610-0286, USA
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