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Bartman CR, Weilandt DR, Shen Y, Lee WD, Han Y, TeSlaa T, Jankowski CSR, Samarah L, Park NR, da Silva-Diz V, Aleksandrova M, Gultekin Y, Marishta A, Wang L, Yang L, Roichman A, Bhatt V, Lan T, Hu Z, Xing X, Lu W, Davidson S, Wühr M, Vander Heiden MG, Herranz D, Guo JY, Kang Y, Rabinowitz JD. Slow TCA flux and ATP production in primary solid tumours but not metastases. Nature 2023; 614:349-357. [PMID: 36725930 PMCID: PMC10288502 DOI: 10.1038/s41586-022-05661-6] [Citation(s) in RCA: 73] [Impact Index Per Article: 73.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Accepted: 12/14/2022] [Indexed: 02/03/2023]
Abstract
Tissues derive ATP from two pathways-glycolysis and the tricarboxylic acid (TCA) cycle coupled to the electron transport chain. Most energy in mammals is produced via TCA metabolism1. In tumours, however, the absolute rates of these pathways remain unclear. Here we optimize tracer infusion approaches to measure the rates of glycolysis and the TCA cycle in healthy mouse tissues, Kras-mutant solid tumours, metastases and leukaemia. Then, given the rates of these two pathways, we calculate total ATP synthesis rates. We find that TCA cycle flux is suppressed in all five primary solid tumour models examined and is increased in lung metastases of breast cancer relative to primary orthotopic tumours. As expected, glycolysis flux is increased in tumours compared with healthy tissues (the Warburg effect2,3), but this increase is insufficient to compensate for low TCA flux in terms of ATP production. Thus, instead of being hypermetabolic, as commonly assumed, solid tumours generally produce ATP at a slower than normal rate. In mouse pancreatic cancer, this is accommodated by the downregulation of protein synthesis, one of this tissue's major energy costs. We propose that, as solid tumours develop, cancer cells shed energetically expensive tissue-specific functions, enabling uncontrolled growth despite a limited ability to produce ATP.
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Affiliation(s)
- Caroline R Bartman
- Department of Chemistry, Princeton University, Princeton, NJ, USA
- Lewis-Sigler Institute of Integrative Genomics, Princeton University, Princeton, NJ, USA
- Ludwig Institute for Cancer Research, Princeton University, Princeton, NJ, USA
| | - Daniel R Weilandt
- Department of Chemistry, Princeton University, Princeton, NJ, USA
- Lewis-Sigler Institute of Integrative Genomics, Princeton University, Princeton, NJ, USA
- Ludwig Institute for Cancer Research, Princeton University, Princeton, NJ, USA
| | - Yihui Shen
- Department of Chemistry, Princeton University, Princeton, NJ, USA
- Lewis-Sigler Institute of Integrative Genomics, Princeton University, Princeton, NJ, USA
| | - Won Dong Lee
- Department of Chemistry, Princeton University, Princeton, NJ, USA
- Lewis-Sigler Institute of Integrative Genomics, Princeton University, Princeton, NJ, USA
| | - Yujiao Han
- Ludwig Institute for Cancer Research, Princeton University, Princeton, NJ, USA
- Department of Molecular Biology, Princeton University, Princeton, NJ, USA
| | - Tara TeSlaa
- Department of Chemistry, Princeton University, Princeton, NJ, USA
- Lewis-Sigler Institute of Integrative Genomics, Princeton University, Princeton, NJ, USA
- Ludwig Institute for Cancer Research, Princeton University, Princeton, NJ, USA
- Department of Molecular and Medical Pharmacology, University of California Los Angeles, Los Angeles, CA, USA
| | - Connor S R Jankowski
- Department of Chemistry, Princeton University, Princeton, NJ, USA
- Lewis-Sigler Institute of Integrative Genomics, Princeton University, Princeton, NJ, USA
- Ludwig Institute for Cancer Research, Princeton University, Princeton, NJ, USA
| | - Laith Samarah
- Department of Chemistry, Princeton University, Princeton, NJ, USA
- Lewis-Sigler Institute of Integrative Genomics, Princeton University, Princeton, NJ, USA
- Ludwig Institute for Cancer Research, Princeton University, Princeton, NJ, USA
| | - Noel R Park
- Lewis-Sigler Institute of Integrative Genomics, Princeton University, Princeton, NJ, USA
- Department of Molecular Biology, Princeton University, Princeton, NJ, USA
| | | | - Maya Aleksandrova
- Cancer Institute of New Jersey, Rutgers University, New Brunswick, NJ, USA
| | - Yetis Gultekin
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Boston, MA, USA
- Department of Biology, Massachusetts Institute of Technology, Boston, MA, USA
| | - Argit Marishta
- Department of Chemistry, Princeton University, Princeton, NJ, USA
- Department of Molecular Biology, Princeton University, Princeton, NJ, USA
| | - Lin Wang
- Department of Chemistry, Princeton University, Princeton, NJ, USA
- Lewis-Sigler Institute of Integrative Genomics, Princeton University, Princeton, NJ, USA
- Ludwig Institute for Cancer Research, Princeton University, Princeton, NJ, USA
- Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Lifeng Yang
- Department of Chemistry, Princeton University, Princeton, NJ, USA
- Lewis-Sigler Institute of Integrative Genomics, Princeton University, Princeton, NJ, USA
- Ludwig Institute for Cancer Research, Princeton University, Princeton, NJ, USA
- Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Shanghai, China
| | - Asael Roichman
- Department of Chemistry, Princeton University, Princeton, NJ, USA
- Lewis-Sigler Institute of Integrative Genomics, Princeton University, Princeton, NJ, USA
- Ludwig Institute for Cancer Research, Princeton University, Princeton, NJ, USA
| | - Vrushank Bhatt
- Cancer Institute of New Jersey, Rutgers University, New Brunswick, NJ, USA
| | - Taijin Lan
- Cancer Institute of New Jersey, Rutgers University, New Brunswick, NJ, USA
| | - Zhixian Hu
- Cancer Institute of New Jersey, Rutgers University, New Brunswick, NJ, USA
| | - Xi Xing
- Department of Chemistry, Princeton University, Princeton, NJ, USA
- Lewis-Sigler Institute of Integrative Genomics, Princeton University, Princeton, NJ, USA
- Ludwig Institute for Cancer Research, Princeton University, Princeton, NJ, USA
| | - Wenyun Lu
- Department of Chemistry, Princeton University, Princeton, NJ, USA
- Lewis-Sigler Institute of Integrative Genomics, Princeton University, Princeton, NJ, USA
- Ludwig Institute for Cancer Research, Princeton University, Princeton, NJ, USA
| | - Shawn Davidson
- Lewis-Sigler Institute of Integrative Genomics, Princeton University, Princeton, NJ, USA
| | - Martin Wühr
- Department of Chemistry, Princeton University, Princeton, NJ, USA
- Department of Molecular Biology, Princeton University, Princeton, NJ, USA
| | - Matthew G Vander Heiden
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Boston, MA, USA
- Department of Biology, Massachusetts Institute of Technology, Boston, MA, USA
| | - Daniel Herranz
- Cancer Institute of New Jersey, Rutgers University, New Brunswick, NJ, USA
| | | | - Yibin Kang
- Ludwig Institute for Cancer Research, Princeton University, Princeton, NJ, USA
- Department of Molecular Biology, Princeton University, Princeton, NJ, USA
| | - Joshua D Rabinowitz
- Department of Chemistry, Princeton University, Princeton, NJ, USA.
- Lewis-Sigler Institute of Integrative Genomics, Princeton University, Princeton, NJ, USA.
- Ludwig Institute for Cancer Research, Princeton University, Princeton, NJ, USA.
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2
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Lip A, Pateman M, Fullerton MM, Chen HM, Bailey L, Houle S, Davidson S, Constantinescu C. Vaccine hesitancy educational tools for healthcare providers and trainees: A scoping review. Vaccine 2023; 41:23-35. [PMID: 36437208 PMCID: PMC9688224 DOI: 10.1016/j.vaccine.2022.09.093] [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: 03/04/2022] [Revised: 09/27/2022] [Accepted: 09/29/2022] [Indexed: 11/27/2022]
Abstract
In the era of vaccine hesitancy, highlighted by the current SARS-CoV2 pandemic, there is an acute need to develop an approach to reduce and address apprehension towards vaccinations. We sought to map and present an overview of existing educational interventions for healthcare providers (HCPs) on strategies to engage in effective vaccine discussion. We applied the Joanna Briggs Institute methodology framework in this scoping review. We searched five relevant databases (MEDLINE, CINAHL, EMBASE, PsycInfo, and SCOPUS) and grey literature through the Google search engine using keywords and subject headings that were systematically identified. We identified 3384 citations in peer-reviewed literature and 41 citations in grey literature. After screening for our inclusion criteria, we included 28 citations from peer reviewed literature and 16 citations from grey literature for analysis. We identified a total of 41 unique education interventions. Interventions were available from multiple disciplines, training levels, clinical settings, and diseases/vaccines. Interventions predominantly centered around two foci: knowledge sharing and communication training. Most interventions identified from peer-reviewed literature were facilitated and were applied with multiple modes of delivery. Interventions from grey literature were more topical and generally self-directed. We identified several gaps in knowledge. Firstly, accessibility and generalizability of interventions was limited. Secondly, distribution of interventions did not adequately address nursing and pharmacy disciplines, and did not cover the breadth of medical specialties for whom vaccine discussions apply. Thirdly, no interventions addressed self monitoring and the clinicians' recognition and management of emotions during difficult conversations. There is a need to address this gap and provide available, credible and comprehensive educational interventions that will support our healthcare providers in effective communication with vaccine hesitant patients.
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Affiliation(s)
- A Lip
- Division of Respirology, Department of Medicine, University of Toronto, Toronto, Ontario, Canada.
| | - M Pateman
- Faculty of Nursing, University of Calgary, Calgary, Alberta, Canada; 19 to Zero Inc., Rocky Mountain House, Alberta, Canada
| | - M M Fullerton
- Faculty of Nursing, University of Calgary, Calgary, Alberta, Canada; 19 to Zero Inc., Rocky Mountain House, Alberta, Canada
| | - H M Chen
- 19 to Zero Inc., Rocky Mountain House, Alberta, Canada
| | - L Bailey
- School of Nursing, Faculty of Health Sciences, University of Ottawa, Ottawa, Ontario, Canada
| | - S Houle
- School of Pharmacy, Faculty of Science, University of Waterloo, Waterloo, Ontario, Canada
| | - S Davidson
- Faculty of Nursing, University of Calgary, Calgary, Alberta, Canada
| | - C Constantinescu
- Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada; Pediatric Infectious Diseases, Department of Pediatrics, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
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3
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Mapuskar K, Vasquez Martinez G, Pulliam C, Petronek M, Steinbach E, Monga V, Furqan M, Jetton J, Saunders D, Pearce A, Davidson S, Pitre L, Dunlap N, Fairbanks R, Lee C, Mott S, Bodeker K, Cl H, Buatti J, Anderson C, Beardsley R, Holmlund J, Zepeda-Orozco D, Spitz D, Allen B. Avasopasem manganese (GC4419) protects against cisplatin-induced chronic kidney disease: An exploratory analysis of renal metrics from a randomized phase 2b clinical trial in head and neck cancer patients. Redox Biol 2023; 60:102599. [PMID: 36640725 PMCID: PMC9852651 DOI: 10.1016/j.redox.2022.102599] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [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: 12/16/2022] [Revised: 12/29/2022] [Accepted: 12/30/2022] [Indexed: 01/04/2023] Open
Abstract
Head and neck squamous cell carcinoma (HNSCC) patients treated with high-dose cisplatin concurrently with radiotherapy (hdCis-RT) commonly suffer kidney injury leading to acute and chronic kidney disease (AKD and CKD, respectively). We conducted a retrospective analysis of renal function and kidney injury-related plasma biomarkers in a subset of HNSCC subjects receiving hdCis-RT in a double-blinded, placebo-controlled clinical trial (NCT02508389) evaluating the superoxide dismutase mimetic, avasopasem manganese (AVA), an investigational new drug. We found that 90 mg AVA treatment prevented a significant reduction in estimated glomerular filtration rate (eGFR) three months as well as six and twelve months after treatment compared to 30 mg AVA and placebo. Moreover, AVA treatment may have allowed renal repair in the first 22 days following cisplatin treatment as evidenced by an increase in epithelial growth factor (EGF), known to aid in renal recovery. An upward trend was also observed in plasma iron homeostasis proteins including total iron (Fe-blood) and iron saturation (Fe-saturation) in the 90 mg AVA group versus placebo. These data support the hypothesis that treatment with 90 mg AVA mitigates cisplatin-induced CKD by inhibiting hdCis-induced renal changes and promoting renal recovery.
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Affiliation(s)
- K.A. Mapuskar
- University of Iowa Hospitals and Clinics, Free Radical and Radiation Biology Program, Department of Radiation Oncology, Iowa City, IA, USA
| | - G. Vasquez Martinez
- Kidney and Urinary Tract Center, The Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, OH, USA
| | - C.F. Pulliam
- University of Iowa Hospitals and Clinics, Free Radical and Radiation Biology Program, Department of Radiation Oncology, Iowa City, IA, USA
| | - M.S. Petronek
- University of Iowa Hospitals and Clinics, Free Radical and Radiation Biology Program, Department of Radiation Oncology, Iowa City, IA, USA
| | - E.J. Steinbach
- The University of Iowa Stead Family Department of Pediatrics, Iowa City, IA, USA
| | - V. Monga
- University of Iowa Hospitals and Clinics, Department of Internal Medicine, Iowa City, IA, USA
| | - M. Furqan
- University of Iowa Hospitals and Clinics, Department of Internal Medicine, Iowa City, IA, USA
| | - J.G. Jetton
- Medical College of Wisconsin, Department of Pediatrics, Milwaukee, WI, USA
| | - D.P. Saunders
- Northeast Cancer Centre, Health Sciences North, Northern Ontario School of Medicine, Sudbury, Canada
| | - A. Pearce
- Northeast Cancer Centre, Health Sciences North, Northern Ontario School of Medicine, Sudbury, Canada
| | - S. Davidson
- Northeast Cancer Centre, Health Sciences North, Northern Ontario School of Medicine, Sudbury, Canada
| | - L. Pitre
- Northeast Cancer Centre, Health Sciences North, Northern Ontario School of Medicine, Sudbury, Canada
| | - N.E. Dunlap
- University of Louisville, School of Medicine, Louisville, KY, 40202, USA
| | | | - C.M. Lee
- Cancer Care Northwest, Spokane, WA, USA
| | - S.L. Mott
- University of Iowa Holden Comprehensive Cancer Center, Iowa City, IA, USA
| | - K.L. Bodeker
- University of Iowa Hospitals and Clinics, Free Radical and Radiation Biology Program, Department of Radiation Oncology, Iowa City, IA, USA
| | - Huang Cl
- University of Iowa Carver College of Medicine, Department of Internal Medicine, Iowa City, IA, USA
| | - J.M. Buatti
- University of Iowa Hospitals and Clinics, Free Radical and Radiation Biology Program, Department of Radiation Oncology, Iowa City, IA, USA
| | - C.M. Anderson
- University of Iowa Hospitals and Clinics, Free Radical and Radiation Biology Program, Department of Radiation Oncology, Iowa City, IA, USA
| | | | | | - D. Zepeda-Orozco
- Kidney and Urinary Tract Center, The Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, OH, USA,Department of Pediatrics, The Ohio State University College of Medicine, Columbus, OH, USA
| | - D.R. Spitz
- University of Iowa Hospitals and Clinics, Free Radical and Radiation Biology Program, Department of Radiation Oncology, Iowa City, IA, USA,Corresponding author. Division of Free Radical and Radiation Biology Department of Radiation Oncology The University of Iowa Hospitals and Clinics, Iowa City, IA, 52242, USA.
| | - B.G. Allen
- University of Iowa Hospitals and Clinics, Free Radical and Radiation Biology Program, Department of Radiation Oncology, Iowa City, IA, USA,Corresponding author. Division of Free Radical and Radiation Biology Department of Radiation Oncology The University of Iowa Hospitals and Clinics, Iowa City, IA, 52242-1181, USA.
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4
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Valvo V, Parietti E, Deans K, Ahn SW, Park NR, Ferland B, Thompson D, Dominas C, Bhagavatula SK, Davidson S, Jonas O. High-throughput in situ perturbation of metabolite levels in the tumor micro-environment reveals favorable metabolic condition for increased fitness of infiltrated T-cells. Front Cell Dev Biol 2022; 10:1032360. [PMID: 36619865 PMCID: PMC9815512 DOI: 10.3389/fcell.2022.1032360] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Accepted: 12/09/2022] [Indexed: 12/24/2022] Open
Abstract
Tumor-infiltrating immune cells experience significant metabolic reprogramming in the tumor microenvironment (TME), and they share similar metabolic pathways and nutrient needs with malignant cells. This positions these cell types in direct nutrient competition in the TME. We currently lack a complete understanding of the similarities, differences, and functional consequences of the metabolic pathways utilized by activated immune cells from different lineages versus neoplastic cells. This study applies a novel in situ approach using implantable microdevices to expose the tumor to 27 controlled and localized metabolic perturbations in order to perform a systematic investigation into the metabolic regulation of the cellular fitness and persistence between immune and tumor cells directly within the native TME. Our findings identify the most potent metabolites, notably glutamine and arginine, that induce a favorable metabolic immune response in a mammary carcinoma model, and reveal novel insights on less characterized pathways, such as cysteine and glutathione. We then examine clinical samples from cancer patients to confirm the elevation of these pathways in tumor regions that are enriched in activated T cells. Overall, this work provides the first instance of a highly multiplexed in situ competition assay between malignant and immune cells within tumors using a range of localized microdose metabolic perturbations. The approach and findings may be used to potentiate the effects of T cell stimulating immunotherapies on a tumor-specific or personalized basis through targeted enrichment or depletion of specific metabolites.
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Affiliation(s)
- Veronica Valvo
- Department of Radiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, United States
| | - Elena Parietti
- Department of Infectious Diseases and Hospital of Epidemiology, University Hospital of Zurich, University of Zurich, Zurich, Switzerland
| | - Kyle Deans
- Department of Radiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, United States
| | - Sebastian W. Ahn
- Department of Radiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, United States
| | - Noel Ruth Park
- Lewis-Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ, United States
| | - Benjamin Ferland
- Department of Radiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, United States
| | - Devon Thompson
- Department of Radiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, United States
| | | | - Sharath K. Bhagavatula
- Department of Radiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, United States
| | - Shawn Davidson
- Lewis-Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ, United States
| | - Oliver Jonas
- Department of Radiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, United States,*Correspondence: Oliver Jonas,
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Lim RG, Al-Dalahmah O, Wu J, Gold MP, Reidling JC, Tang G, Adam M, Dansu DK, Park HJ, Casaccia P, Miramontes R, Reyes-Ortiz AM, Lau A, Hickman RA, Khan F, Paryani F, Tang A, Ofori K, Miyoshi E, Michael N, McClure N, Flowers XE, Vonsattel JP, Davidson S, Menon V, Swarup V, Fraenkel E, Goldman JE, Thompson LM. Huntington disease oligodendrocyte maturation deficits revealed by single-nucleus RNAseq are rescued by thiamine-biotin supplementation. Nat Commun 2022; 13:7791. [PMID: 36543778 PMCID: PMC9772349 DOI: 10.1038/s41467-022-35388-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [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: 06/26/2021] [Accepted: 11/30/2022] [Indexed: 12/24/2022] Open
Abstract
The complexity of affected brain regions and cell types is a challenge for Huntington's disease (HD) treatment. Here we use single nucleus RNA sequencing to investigate molecular pathology in the cortex and striatum from R6/2 mice and human HD post-mortem tissue. We identify cell type-specific and -agnostic signatures suggesting oligodendrocytes (OLs) and oligodendrocyte precursors (OPCs) are arrested in intermediate maturation states. OL-lineage regulators OLIG1 and OLIG2 are negatively correlated with CAG length in human OPCs, and ATACseq analysis of HD mouse NeuN-negative cells shows decreased accessibility regulated by OL maturation genes. The data implicates glucose and lipid metabolism in abnormal cell maturation and identify PRKCE and Thiamine Pyrophosphokinase 1 (TPK1) as central genes. Thiamine/biotin treatment of R6/1 HD mice to compensate for TPK1 dysregulation restores OL maturation and rescues neuronal pathology. Our insights into HD OL pathology spans multiple brain regions and link OL maturation deficits to abnormal thiamine metabolism.
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Affiliation(s)
- Ryan G Lim
- UCI MIND, University of California Irvine, Irvine, CA, USA
| | - Osama Al-Dalahmah
- Department of Pathology and Cell Biology, Vagelos College of Physicians and Surgeons, Columbia University Irving Medical Center, New York, NY, USA
| | - Jie Wu
- Department of Biological Chemistry, University of California Irvine, Irvine, CA, USA
| | - Maxwell P Gold
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | | | - Guomei Tang
- Department of Neurology, Vagelos College of Physicians and Surgeons, Columbia University Irving Medical Center, New York, NY, USA
| | - Miriam Adam
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - David K Dansu
- Advanced Science Research Center at the City University of New York, New York, NY, USA
| | - Hye-Jin Park
- Advanced Science Research Center at the City University of New York, New York, NY, USA
| | - Patrizia Casaccia
- Advanced Science Research Center at the City University of New York, New York, NY, USA
| | | | - Andrea M Reyes-Ortiz
- Department of Biological Chemistry, University of California Irvine, Irvine, CA, USA
| | - Alice Lau
- Department of Psychiatry and Human Behavior, University of California Irvine, Irvine, CA, USA
| | - Richard A Hickman
- Department of Pathology and Cell Biology, Vagelos College of Physicians and Surgeons, Columbia University Irving Medical Center, New York, NY, USA
| | - Fatima Khan
- Department of Pathology and Cell Biology, Vagelos College of Physicians and Surgeons, Columbia University Irving Medical Center, New York, NY, USA
| | - Fahad Paryani
- Department of Neurology, Vagelos College of Physicians and Surgeons, Columbia University Irving Medical Center, New York, NY, USA
| | - Alice Tang
- Department of Pathology and Cell Biology, Vagelos College of Physicians and Surgeons, Columbia University Irving Medical Center, New York, NY, USA
| | - Kenneth Ofori
- Department of Pathology and Cell Biology, Vagelos College of Physicians and Surgeons, Columbia University Irving Medical Center, New York, NY, USA
| | - Emily Miyoshi
- Department of Neurobiology and Behavior, University of California Irvine, Irvine, CA, USA
| | - Neethu Michael
- Department of Pathology, University of California Irvine, Irvine, CA, USA
| | - Nicolette McClure
- Department of Neurobiology and Behavior, University of California Irvine, Irvine, CA, USA
| | - Xena E Flowers
- Department of Pathology and Cell Biology, Vagelos College of Physicians and Surgeons, Columbia University Irving Medical Center, New York, NY, USA
- Taub Institute for Research on Alzheimer's Disease and the Aging Brain, Columbia University Irving Medical Center, New York City, New York, NY, USA
| | - Jean Paul Vonsattel
- Department of Pathology and Cell Biology, Vagelos College of Physicians and Surgeons, Columbia University Irving Medical Center, New York, NY, USA
- Taub Institute for Research on Alzheimer's Disease and the Aging Brain, Columbia University Irving Medical Center, New York City, New York, NY, USA
| | - Shawn Davidson
- Lewis-Sigler Institute for Integrative Genomics, Princeton, NJ, USA
| | - Vilas Menon
- Department of Neurology, Vagelos College of Physicians and Surgeons, Columbia University Irving Medical Center, New York, NY, USA
| | - Vivek Swarup
- UCI MIND, University of California Irvine, Irvine, CA, USA
- Department of Neurobiology and Behavior, University of California Irvine, Irvine, CA, USA
| | - Ernest Fraenkel
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - James E Goldman
- Department of Pathology and Cell Biology, Vagelos College of Physicians and Surgeons, Columbia University Irving Medical Center, New York, NY, USA.
- Taub Institute for Research on Alzheimer's Disease and the Aging Brain, Columbia University Irving Medical Center, New York City, New York, NY, USA.
| | - Leslie M Thompson
- UCI MIND, University of California Irvine, Irvine, CA, USA.
- Department of Biological Chemistry, University of California Irvine, Irvine, CA, USA.
- Department of Psychiatry and Human Behavior, University of California Irvine, Irvine, CA, USA.
- Department of Neurobiology and Behavior, University of California Irvine, Irvine, CA, USA.
- Sue and Bill Gross Stem Cell Center University of California Irvine, Irvine, CA, USA.
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6
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Harford M, Villarroel M, Jorge J, Redfern O, Finnegan E, Davidson S, Young JD, Tarassenko L, Watkinson P. Contactless skin perfusion monitoring with video cameras: tracking pharmacological vasoconstriction and vasodilation using photoplethysmographic changes. Physiol Meas 2022; 43. [PMID: 36270506 DOI: 10.1088/1361-6579/ac9c82] [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] [Received: 06/15/2022] [Accepted: 10/21/2022] [Indexed: 02/07/2023]
Abstract
Objectives.Clinical assessment of skin perfusion informs prognosis in critically ill patients. Video camera monitoring could provide an objective, continuous method to monitor skin perfusion. In this prospective, interventional study of healthy volunteers, we tested whether video camera-derived photoplethysmography imaging and colour measurements could detect drug-induced skin perfusion changes.Approach.We monitored the lower limbs of 30 volunteers using video cameras while administering phenylephrine (a vasoconstrictor) and glyceryl trinitrate (a vasodilator). We report relative pixel intensity changes from baseline, as absolute values are sensitive to environmental factors. The primary outcome was the pre- to peak- infusion green channel amplitude change in the pulsatile PPGi waveform component. Secondary outcomes were pre-to-peak changes in the photoplethysmographic imaging waveform baseline, skin colour hue and skin colour saturation.Main results.The 30 participants had a median age of 29 years (IQR 25-34), sixteen (53%) were male. A 34.7% (p= 0.0001) mean decrease in the amplitude of the pulsatile photoplethysmographic imaging waveform occurred following phenylephrine infusion. A 30.7% (p= 0.000004) mean increase occurred following glyceryl trinitrate infusion. The photoplethysmographic imaging baseline decreased with phenylephrine by 2.1% (p= 0.000 02) and increased with glyceryl trinitrate by 0.5% (p= 0.026). Skin colour hue changed in opposite direction with phenylephrine (-0.0013,p= 0.0002) and glyceryl trinitrate (+0.0006,p= 0.019). Skin colour saturation decreased with phenylephrine by 0.0022 (p= 0.0002), with no significant change observed with glyceryl trinitrate (+0.0005,p= 0.21).Significance.Drug-induced vasoconstriction and vasodilation are associated with detectable changes in photoplethysmographic imaging waveform parameters and skin hue. Our findings suggest video cameras have great potential for continuous, contactless skin perfusion monitoring.
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Affiliation(s)
- M Harford
- Critical Care Research Group, Kadoorie Centre for Critical Care Research and Education, Nuffield Department of Clinical Neurosciences, University of Oxford, United Kingdom.,Institute of Biomedical Engineering, Department of Engineering Science, University of Oxford, United Kingdom.,Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom
| | - M Villarroel
- Institute of Biomedical Engineering, Department of Engineering Science, University of Oxford, United Kingdom
| | - J Jorge
- Institute of Biomedical Engineering, Department of Engineering Science, University of Oxford, United Kingdom
| | - O Redfern
- Critical Care Research Group, Kadoorie Centre for Critical Care Research and Education, Nuffield Department of Clinical Neurosciences, University of Oxford, United Kingdom
| | - E Finnegan
- Institute of Biomedical Engineering, Department of Engineering Science, University of Oxford, United Kingdom
| | - S Davidson
- Institute of Biomedical Engineering, Department of Engineering Science, University of Oxford, United Kingdom
| | - J D Young
- Critical Care Research Group, Kadoorie Centre for Critical Care Research and Education, Nuffield Department of Clinical Neurosciences, University of Oxford, United Kingdom
| | - L Tarassenko
- Institute of Biomedical Engineering, Department of Engineering Science, University of Oxford, United Kingdom
| | - P Watkinson
- Critical Care Research Group, Kadoorie Centre for Critical Care Research and Education, Nuffield Department of Clinical Neurosciences, University of Oxford, United Kingdom.,Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom
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7
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Charles T, Snodgrass S, Davidson S, Gibbs B, Gleadhill C, Robson E, Williams C. The impact of high intensity resistance training on low back pain disability: a systematic review and meta-analysis. J Sci Med Sport 2022. [DOI: 10.1016/j.jsams.2022.09.157] [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: 11/17/2022]
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8
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Ali A, Davidson S, Fraenkel E, Gilmore I, Hankemeier T, Kirwan JA, Lane AN, Lanekoff I, Larion M, McCall LI, Murphy M, Sweedler JV, Zhu C. Single cell metabolism: current and future trends. Metabolomics 2022; 18:77. [PMID: 36181583 PMCID: PMC10063251 DOI: 10.1007/s11306-022-01934-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Accepted: 09/05/2022] [Indexed: 11/29/2022]
Abstract
Single cell metabolomics is an emerging and rapidly developing field that complements developments in single cell analysis by genomics and proteomics. Major goals include mapping and quantifying the metabolome in sufficient detail to provide useful information about cellular function in highly heterogeneous systems such as tissue, ultimately with spatial resolution at the individual cell level. The chemical diversity and dynamic range of metabolites poses particular challenges for detection, identification and quantification. In this review we discuss both significant technical issues of measurement and interpretation, and progress toward addressing them, with recent examples from diverse biological systems. We provide a framework for further directions aimed at improving workflow and robustness so that such analyses may become commonly applied, especially in combination with metabolic imaging and single cell transcriptomics and proteomics.
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Affiliation(s)
- Ahmed Ali
- Leiden Academic Centre for Drug Research, University of Leiden, Gorlaeus Building Einsteinweg 55, 2333 CC, Leiden, The Netherlands
| | - Shawn Davidson
- Lewis-Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ, USA
| | - Ernest Fraenkel
- Department of Biological Engineering and the Computational and Systems Biology Program, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Ian Gilmore
- National Physical Laboratory, Teddington, TW11 0LW, Middlesex, UK
| | - Thomas Hankemeier
- Leiden Academic Centre for Drug Research, University of Leiden, Room number GW4.07, Gorlaeus Building, Einsteinweg 55, 2333 CC, Leiden, The Netherlands
| | - Jennifer A Kirwan
- Berlin Institute of Health, Metabolomics Platform, Translational Research Unit of the Charite-Universitätsmedizin Berlin, Anna-Louisa-Karsch-Str 2, 10178, Berlin, Germany
| | - Andrew N Lane
- Department of Toxicology and Cancer Biology, and Center for Environmental and Systems Biochemistry, University of Kentucky, 789 S. Limestone St, Lexington, KY, 40536, USA.
| | - Ingela Lanekoff
- Department of Chemistry-BMC, Uppsala University, Husargatan 3 (576), 751 23, Uppsala, Sweden
| | - Mioara Larion
- Center for Cancer Research, National Cancer Institute, Building 37, Room 1136A, Bethesda, MD, 20892, USA
| | - Laura-Isobel McCall
- Department of Chemistry & Biochemistry, Department of Microbiology and Plant Biology, Laboratories of Molecular Anthropology and Microbiome Research, University of Oklahoma, 101 Stephenson Parkway, room 3750, Norman, OK, 73019-5251, USA
| | - Michael Murphy
- Departments of Biological Engineering, Department of Electrical Engineering, and Computer Science and the Computational and Systems Biology Program, Massachusetts Institute of Technology, Cambridge, USA
| | - Jonathan V Sweedler
- Department of Chemistry, and the Beckman Institute, University of Illinois Urbana-Champaign, 505 South Mathews Avenue, Urbana, IL, 61801, USA
| | - Caigang Zhu
- Department of Biomedical Engineering, University of Kentucky, Lexington, KY, 40536, USA
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9
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Strohschein F, Qi S, Link C, Davidson S, Watson L. Using real-world evidence to understand the symptom experience and concerns of older adults with cancer: Age-analysis of patient-reported outcome measures routinely collected in Alberta, Canada. J Geriatr Oncol 2022. [DOI: 10.1016/s1879-4068(22)00323-x] [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: 11/05/2022]
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10
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Balagopal G, Davidson S, Gill S, Barengo N, De La Rosa M, Sanchez M. The impact of cultural stress and gender norms on alcohol use severity among Latino immigrant men. Ethn Health 2022; 27:1271-1289. [PMID: 33586536 PMCID: PMC8363673 DOI: 10.1080/13557858.2021.1880550] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [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: 07/22/2020] [Accepted: 01/19/2021] [Indexed: 06/12/2023]
Abstract
Alcohol misuse affects 15 million people in the United States. Compared to White men, Latino men have disproportionately higher rates of both alcohol misuse and negative alcohol-related consequences (e.g. drunk driving, liver disease, alcohol dependence, HIV/AIDS). This cross sectional study examined how cultural stressors [immigration stress and negative context of reception (NCR)] coupled with traditional Latino male gender norms (machismo and caballerismo) influences alcohol use severity (AUS) among adult Latino immigrant men. Data for the present study was collected between 2017 and 2018 from 279 Cuban, Central American, and South American adult Latino men who immigrated to the US approximately 10 years prior. Results from hierarchical multiple regression analysis revealed higher levels of perceived NCR (β = 0.15, p = .01), and machismo (β = 0.16, p = .02) were associated with greater AUS. Significant interaction effects were found between both cultural stressors and machismo [immigration stress x machismo (β = 0.22, p < .001); NCR x machismo (β = 0.22, p < .001)] whereby higher levels of machismo strengthened the association between cultural stress and AUS. Findings from the present study can inform culturally appropriate interventions aimed at mitigating alcohol use among Latino immigrant men.
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Affiliation(s)
- G Balagopal
- Department of Translational Medicine, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, USA
| | - S Davidson
- Department of Translational Medicine, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, USA
| | - S Gill
- Department of Translational Medicine, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, USA
| | - N Barengo
- Department of Translational Medicine, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, USA
- Faculty of Medicine, Riga Stradins University, Riga, Latvia
- Department of Public Health, Faculty of Medicine, University of Helsinki, Finland
| | - M De La Rosa
- Center for Research on U.S. Latino HIV/AIDS and Drug Abuse (CRUSADA), School of Social Work, Robert Stempel College of Public Health and Social Work, Florida International University, Miami, FL, USA
- Department of Health Promotion and Disease Prevention, Robert Stempel College of Public Health and Social Work, Florida International University, Miami, USA
| | - M Sanchez
- Center for Research on U.S. Latino HIV/AIDS and Drug Abuse (CRUSADA), School of Social Work, Robert Stempel College of Public Health and Social Work, Florida International University, Miami, FL, USA
- Department of Health Promotion and Disease Prevention, Robert Stempel College of Public Health and Social Work, Florida International University, Miami, USA
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11
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Yang L, TeSlaa T, Ng S, Nofal M, Wang L, Lan T, Zeng X, Cowan A, McBride M, Lu W, Davidson S, Liang G, Oh TG, Downes M, Evans R, Von Hoff D, Guo JY, Han H, Rabinowitz JD. Ketogenic diet and chemotherapy combine to disrupt pancreatic cancer metabolism and growth. Med 2022; 3:119-136. [PMID: 35425930 PMCID: PMC9004683 DOI: 10.1016/j.medj.2021.12.008] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Background Ketogenic diet is a potential means of augmenting cancer therapy. Here, we explore ketone body metabolism and its interplay with chemotherapy in pancreatic cancer. Methods Metabolism and therapeutic responses of murine pancreatic cancer were studied using KPC primary tumors and tumor chunk allografts. Mice on standard high-carbohydrate diet or ketogenic diet were treated with cytotoxic chemotherapy (nab-paclitaxel, gemcitabine, cisplatin). Metabolic activity was monitored with metabolomics and isotope tracing, including 2H- and 13C-tracers, liquid chromatography-mass spectrometry, and imaging mass spectrometry. Findings Ketone bodies are unidirectionally oxidized to make NADH. This stands in contrast to the carbohydrate-derived carboxylic acids lactate and pyruvate, which rapidly interconvert, buffering NADH/NAD. In murine pancreatic tumors, ketogenic diet decreases glucose's concentration and tricarboxylic acid cycle contribution, enhances 3-hydroxybutyrate's concentration and tricarboxylic acid contribution, and modestly elevates NADH, but does not impact tumor growth. In contrast, the combination of ketogenic diet and cytotoxic chemotherapy substantially raises tumor NADH and synergistically suppresses tumor growth, tripling the survival benefits of chemotherapy alone. Chemotherapy and ketogenic diet also synergize in immune-deficient mice, although long-term growth suppression was only observed in mice with an intact immune system. Conclusions Ketogenic diet sensitizes murine pancreatic cancer tumors to cytotoxic chemotherapy. Based on these data, we have initiated a randomized clinical trial of chemotherapy with standard versus ketogenic diet for patients with metastatic pancreatic cancer (NCT04631445).
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Affiliation(s)
- Lifeng Yang
- Department of Chemistry, Princeton University, Princeton, NJ, USA
- Lewis-Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ, USA
- Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Tara TeSlaa
- Department of Chemistry, Princeton University, Princeton, NJ, USA
- Lewis-Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ, USA
| | - Serina Ng
- Molecular Medicine Division, The Translational Genomics Research Institute, Phoenix, AZ, USA
| | - Michel Nofal
- Lewis-Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ, USA
| | - Lin Wang
- Department of Chemistry, Princeton University, Princeton, NJ, USA
- Lewis-Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ, USA
- Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College, No. 5 Dong Dan San Tiao, Dongcheng District, Beijing 100005, China
| | - Taijin Lan
- Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, USA
- Department of Medicine, Rutgers Robert Wood Johnson Medical School, New Brunswick, NJ, USA
| | - Xianfeng Zeng
- Department of Chemistry, Princeton University, Princeton, NJ, USA
- Lewis-Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ, USA
| | - Alexis Cowan
- Lewis-Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ, USA
- Department of Molecular Biology, Princeton University, Princeton, NJ, USA
| | - Matthew McBride
- Department of Chemistry, Princeton University, Princeton, NJ, USA
- Lewis-Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ, USA
| | - Wenyun Lu
- Department of Chemistry, Princeton University, Princeton, NJ, USA
- Lewis-Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ, USA
| | - Shawn Davidson
- Lewis-Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ, USA
| | - Gaoyang Liang
- Gene Expression Laboratory, Salk Institute for Biological Studies, La Jolla, CA, USA
| | - Tae Gyu Oh
- Gene Expression Laboratory, Salk Institute for Biological Studies, La Jolla, CA, USA
| | - Michael Downes
- Gene Expression Laboratory, Salk Institute for Biological Studies, La Jolla, CA, USA
| | - Ronald Evans
- Gene Expression Laboratory, Salk Institute for Biological Studies, La Jolla, CA, USA
| | - Daniel Von Hoff
- Molecular Medicine Division, The Translational Genomics Research Institute, Phoenix, AZ, USA
| | - Jessie Yanxiang Guo
- Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, USA
- Department of Medicine, Rutgers Robert Wood Johnson Medical School, New Brunswick, NJ, USA
- Department of Chemical Biology, Rutgers Ernest Mario School of Pharmacy, Piscataway, NJ, USA
| | - Haiyong Han
- Molecular Medicine Division, The Translational Genomics Research Institute, Phoenix, AZ, USA
| | - Joshua D. Rabinowitz
- Department of Chemistry, Princeton University, Princeton, NJ, USA
- Lewis-Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ, USA
- Ludwig Institute for Cancer Research, Princeton Branch, Princeton, NJ, USA
- Lead contact
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12
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Ferraro G, Ali A, Luengo A, Deik A, Abbott K, Bezwada D, Blanc L, Prideaux B, Jin X, Posada J, Amoozgar Z, Ferreira R, Chen I, Naxerova K, Ng C, Westermark A, Davidson S, Fukumura D, Dartois V, Clish C, Heiden MV, Jain R. TAMI-05. FATTY ACID SYNTHESIS IS REQUIRED FOR HER2+ BREAST CANCER BRAIN METASTASIS. Neuro Oncol 2021. [DOI: 10.1093/neuonc/noab196.789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Brain metastases are refractory to therapies that control systemic disease in patients with human epidermal growth factor receptor 2-positive breast cancer and the brain microenvironment contributes to this therapy resistance. Nutrient availability can vary across tissues, therefore metabolic adaptations required for brain metastatic breast cancer growth may introduce liabilities that can be exploited for therapy. Here we assessed how metabolism differs between breast tumors in brain versus extracranial sites and found that fatty acid synthesis is elevated in breast tumors growing in the brain. We determine that this phenotype is an adaptation to decreased lipid availability in the brain relative to other tissues, resulting in site-specific dependency on fatty acid synthesis for breast tumors growing at this site. Genetic or pharmacological inhibition of fatty acid synthase reduces human epidermal growth factor receptor 2-positive breast tumor growth in the brain, demonstrating that differences in nutrient availability across metastatic sites can result in targetable metabolic dependencies.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Xin Jin
- Broad Institute, Cambridge, USA
| | | | | | | | - Ivy Chen
- Harvard Medical School / MIT, Boston, USA
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13
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Davidson S, Armstrong L, McElvanna K, McKay D. EP.WE.231Emergency Presentations of Colorectal Cancer during the COVID-19 Era. Br J Surg 2021. [PMCID: PMC8574373 DOI: 10.1093/bjs/znab308.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
Aims
COVID-19 has reduced the ability to provide red flag investigations for colorectal patients. The aim of this study is to assess the number of emergency presentations of new colorectal malignancy during the COVID-19 era and if there is an increase in palliative cases.
Methods
A retrospective review of all patients presenting to unscheduled care with a new diagnosis of colorectal malignancy from 31st March 2020 - 25th January 2021 in a single UK Trust. An institutional data base and electronic care records were used to review patient demographics, management and curative intent. Data points for the same period in 2019-2020 were recorded for comparison.
Results
45 patients diagnosed with new colorectal malignancy during an unscheduled admission to hospital within the study timeframe. 22% (10/45) presented in January 2021. 29 diagnosed during the same time interval 2019-2020. Median age at presentation was 77.5 and 79 respectively.
40% (18/45) of patients in 2020-2021 proceeded to emergency surgery, compared to 58% (17/29) in 2019-2020 (p = 0.12).
10.3% (3/29) of 2019-2020 patients were managed with colonic stenting. This increased in 2020-2021 to 17.8% (8/45) (p = 0.38).
77.8% (35/45) patients in 2020/2021 presented at a palliative stage of disease compared to 62.1% (18/29) in 2019-2020 (p = 0.15).
Conclusions
Overall the data has not shown a statistically significant difference in patients presenting as an emergency with new colorectal malignancy. However, there was a rise in admissions noted in January 2021; should this trend continue, alongside the persistent pressures of COVID-19 ongoing research is needed to assess the true impact.
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14
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Cornett L, Davidson S, McElvanna K. EP.WE.338Ambulatory Ultrasound Scans Reduce Inpatient Admissions During COVID-19: A Need for the Expansion of Ambulatory Services. Br J Surg 2021. [PMCID: PMC8574370 DOI: 10.1093/bjs/znab308.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Aim With the increased need to manage patients out of hospital during COVID-19, it was anticipated that need for ambulatory imaging would increase. This study aimed to assess the demand for ambulatory ultrasounds (US) during the COVID-19 pandemic and the impact on inpatient admissions. Methods A retrospective review of patients presenting to the Emergency Department (ED) between 12th July – 23rd August 2020 who required an US as first line imaging. Electronic Care Records were used to collect data regarding type of US i.e., inpatient, or ambulatory, time taken for ambulatory US and outcome after imaging. The same period in 2019 was assessed for comparison. Results In 2020, 100 patients required an US compared to 88 in 2019. 37% (37/100) of which were discharged for an ambulatory US, compared to 14.8% (13/88) in 2019 (p = 0.006). The average waiting time for an ambulatory US in 2019 was 2 days, this increased to 7 days in 2020. Following ambulatory US in 2020 43.2% (16/37) required further outpatient imaging or assessment; similar outcomes were seen in 2019 with 46.2% (6/13). Overall, there was a 150% increase in the use of ambulatory US, with a 26% decrease in admissions in 2020 vs. 2019. Conclusions There was a significant increase in the number of patients discharged from ED to undergo an ambulatory US resulting in reduced inpatient admissions. This increase in demand is reflected by the prolonged waiting time highlighting the requirement for expansion of ambulatory services to meet this clinical need.
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Affiliation(s)
- L Cornett
- Criagavon Area Hospital, Southern Health and Social Care Trust
| | - S Davidson
- Criagavon Area Hospital, Southern Health and Social Care Trust
| | - K McElvanna
- Criagavon Area Hospital, Southern Health and Social Care Trust
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15
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Davidson S, Cornett L, McElvanna K. SP10.1.2 Increased Access to Computed Tomography Reduces Acute Surgical Admissions: Lessons Learnt During the COVID-19 Pandemic. Br J Surg 2021. [DOI: 10.1093/bjs/znab361.175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
Aim
With increased bed pressures due to COVID-19, keeping patients out of hospital became critical. Computed Tomography (CT) utilisation was increased to aid in the assessment of acute surgical patients. The aim of this study was to assess if increased access to CT reduced inpatient admissions.
Methods
A Retrospective audit of patients presenting to the Emergency Department (ED) between 12th July – 23rd August 2020 who required a CT scan. Data collected from Electronic Care Records and NIPACS, including patient destination at time of CT and decision following CT. For comparison, the same time-period in 2019 was assessed.
Results
In 2020, 301 patients required a CT compared to 207 in 2019. 84.7% (255/301) had a CT direct from ED in 2020 vs. 56.5% (117/207) in 2019 (p < 0.001).
Of those who had CT direct from ED in 2020 18.4% (47/255) were discharged, compared to 1.7% (2/117) in 2019 (p < 0.001). 9.8% (25/255) were directed to an alternative specialty in 2020 vs. 2.6% (3/117) in 2019 (p = 0.014).
2.7% (8/301) were discharged for an ambulatory CT in 2020, an increase from 0.5% (1/207) in 2019 (p = 0.07).
Overall, there was a 24% reduction in the number of patients requiring acute surgical admission in 2020 vs. 2019.
Conclusions
There was a significant increase in the number of CT’s carried out directly from ED. This enabled a significant number of patients to be discharged or transferred to a more appropriate specialty. These results demonstrate that increased access to CT can reduce the need for acute surgical admission.
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16
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Ferraro G, Ali A, Luengo A, Kodack D, Deik A, Abbott K, Bezwada D, Blanc L, Prideaux B, Jin X, Possada J, Chen J, Chin C, Amoozgar Z, Ferreira R, Chen I, Naxerova K, Ng C, Westermark A, Duquette M, Roberge S, Lyssiotis C, Duda D, Golub T, Cantley L, Asara J, Davidson S, Fukumura D, Dartois V, Clish C, Heiden MV, Jain R. DDRE-07. FATTY ACID SYNTHESIS IS REQUIRED FOR BREAST CANCER BRAIN METASTASIS. Neurooncol Adv 2021. [PMCID: PMC7992317 DOI: 10.1093/noajnl/vdab024.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Brain metastases are refractory to therapies that otherwise control systemic disease in patients with human epidermal growth factor receptor 2 (HER2+) breast cancer, and the unique brain microenvironment contributes to this therapy resistance. Nutrient availability can vary across tissues, therefore metabolic adaptations required for breast cancer growth in the brain microenvironment may also introduce liabilities that can be exploited for therapy. Here, we assessed how metabolism differs between breast tumors growing in the brain versus extracranial sites and found that fatty acid synthesis is elevated in breast tumors growing in the brain. We determine that this phenotype is an adaptation to decreased lipid availability in the brain relative to other tissues, which results in a site-specific dependency on fatty acid synthesis for breast tumors growing at this site. Genetic or pharmacological inhibition of fatty acid synthase (FASN) reduces HER2+ breast tumor growth in the brain, demonstrating that differences in nutrient availability across metastatic sites can result in targetable metabolic dependencies.
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Affiliation(s)
- Gino Ferraro
- Massachusetts General Hospital / Harvard Medical School, Boston, MA, USA
| | - Ahmed Ali
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Alba Luengo
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - David Kodack
- Massachusetts General Hospital / Harvard Medical School, Boston, MA, USA
| | - Amy Deik
- Broad Institute of MIT and Harvard University, Cambridge, MA, USA
| | - Keene Abbott
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Divya Bezwada
- Massachusetts General Hospital / Harvard Medical School, Boston, MA, USA
| | - Landry Blanc
- The Public Health Research Institute, New Jersey Medical School, Rutgers University, Newark, NJ, USA
| | - Brendan Prideaux
- The Public Health Research Institute, New Jersey Medical School, Rutgers University, Newark, NJ, USA
| | - Xin Jin
- Broad Institute of MIT and Harvard University, Cambridge, MA, USA
| | - Jessica Possada
- Massachusetts General Hospital / Harvard Medical School, Boston, MA, USA
| | - Jiang Chen
- Massachusetts General Hospital / Harvard Medical School, Boston, MA, USA
| | - Christopher Chin
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Zohreh Amoozgar
- Massachusetts General Hospital / Harvard Medical School, Boston, MA, USA
| | - Raphael Ferreira
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Ivy Chen
- Massachusetts General Hospital / Harvard Medical School, Boston, MA, USA
| | - Kamila Naxerova
- Massachusetts General Hospital / Harvard Medical School, Boston, MA, USA
| | - Christopher Ng
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Anna Westermark
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Mark Duquette
- Massachusetts General Hospital / Harvard Medical School, Boston, MA, USA
| | - Sylvie Roberge
- Massachusetts General Hospital / Harvard Medical School, Boston, MA, USA
| | - Costas Lyssiotis
- Division of Signal Transduction, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Dan Duda
- Massachusetts General Hospital / Harvard Medical School, Boston, MA, USA
| | - Todd Golub
- Broad Institute of MIT and Harvard University, Cambridge, MA, USA
| | - Lewis Cantley
- Division of Signal Transduction, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - John Asara
- Division of Signal Transduction, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Shawn Davidson
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Boston, MA, USA
| | - Dai Fukumura
- Massachusetts General Hospital / Harvard Medical School, Boston, MA, USA
| | - Véronique Dartois
- The Public Health Research Institute, New Jersey Medical School, Rutgers University, Newark, NJ, USA
| | - Clary Clish
- Broad Institute of MIT and Harvard University, Cambridge, MA, USA
| | - Matthew Vander Heiden
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Rakesh Jain
- Massachusetts General Hospital / Harvard Medical School, Boston, MA, USA
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17
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Ngo B, Kim E, Osorio-Vasquez V, Doll S, Bustraan S, Liang R, Luengo A, Davidson S, Ali A, Ferraro G, Fischer G, Plasger A, Rajasekhar V, Kastenhuber E, Eskandari R, Bacha S, Sriram R, Bakhoum S, Snuderl M, Cotzia P, Healey J, Sabatini D, Jones D, Zhao J, Yu M, Jain R, Keshari K, Davies M, Heiden MV, Hernando E, Mann M, Cantley L, Pacold M. DDRE-22. TARGETING SERINE SYNTHESIS IN BRAIN METASTASIS. Neurooncol Adv 2021. [PMCID: PMC7992201 DOI: 10.1093/noajnl/vdab024.044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The brain environment is low in amino acids, including serine and glycine, both of which are important for tumor growth as they are precursors of proteins and nucleotide bases. How tumor cells overcome these conditions to proliferate and survive in the brain is incompletely understood. Here, we show that 3-phosphoglycerate dehydrogenase (PHGDH), which catalyzes the first and rate-limiting step of glucose-derived serine synthesis, enables brain metastasis in multiple human types and in preclinical models. Genetic suppression and small molecule inhibition of PHGDH attenuated brain metastasis, but not extra cranial tumors, and improved the overall survival of mice bearing brain metastasis. These results demonstrate that the tumor nutrient microenvironment determines tumor cell sensitivity to loss of serine synthesis pathway activity and raise the possibility that serine synthesis inhibitors may be useful in the treatment of brain metastases.
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Affiliation(s)
- Bryan Ngo
- Memorial Sloan-Kettering Cancer Center, New York, NY, USA
| | | | | | - Sophia Doll
- Max Planck Institute of Biochemistry, Martinsried, Germany
| | | | - Roger Liang
- Weill Cornell Medical College, New York, NY, USA
| | - Alba Luengo
- Massachusetts Institute of Technology, Cambridge, MA, USA
| | | | - Ahmed Ali
- Massachusetts Institute of Technology, Cambridge, MA, USA
| | | | | | | | | | | | | | - Sarah Bacha
- Weill Cornell Medical College, New York, NY, USA
| | | | - Samuel Bakhoum
- Memorial Sloan-Kettering Cancer Center, New York, NY, USA
| | | | | | - John Healey
- Memorial Sloan-Kettering Cancer Center, New York, NY, USA
| | - David Sabatini
- Whitehead Institute for Biomedical Research, Cambridge, MA, USA
| | | | - Jean Zhao
- Dana-Farber Cancer Institute, Boston, MA, USA
| | - Min Yu
- University of Southern California, Los Angeles, CA, USA
| | - Rakesh Jain
- Massachusetts General Hospital, Boston, MA, USA
| | - Kayvan Keshari
- Memorial Sloan-Kettering Cancer Center, New York, NY, USA
| | | | | | | | - Matthias Mann
- Max Planck Institute of Biochemistry, Martinsried, Germany
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18
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Lee B, Abbott A, Davidson S, Syrkin L, LeFever G, Van den Abbeele AD. Centralized Clinical Trial Imaging Data Management: Practical Guidance from a Comprehensive Cancer Center's Experience. J Digit Imaging 2020; 32:849-854. [PMID: 30564956 DOI: 10.1007/s10278-018-0161-0] [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: 10/27/2022] Open
Abstract
Medical imaging is an integral part of clinical trial research and it must be managed properly to provide accurate data to the sponsor in a timely manner (Clune in Cancer Inform 4:33-56, 2007; Wang et al. in Proc SPIE Int Soc Opt Eng 7967, 2011). Standardized workflows for site qualification, protocol preparation, data storage, retrieval, de-identification, submission, and query resolution are paramount to achieve quality clinical trial data management such as reducing the number of imaging protocol deviations and avoiding delays in data transfer. Centralization of data management and implementation of relational databases and electronic workflows can help maintain consistency and accuracy of imaging data. This technical note aims at sharing the practical implementation of our centralized clinical trial imaging data management processes to avoid the fragmentation of tasks among various disease centers and research staff, and enable us to provide quality, accurate, and timely imaging data to clinical trial sponsors.
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Affiliation(s)
- Brandon Lee
- Department of Imaging and Center for Biomedical Imaging in Oncology, Dana-Farber Cancer Institute, 450 Brookline Ave, Boston, MA, 02215, USA.
| | - A Abbott
- Department of Imaging and Center for Biomedical Imaging in Oncology, Dana-Farber Cancer Institute, 450 Brookline Ave, Boston, MA, 02215, USA
| | - S Davidson
- Department of Information Services, Dana-Farber Cancer Institute, Boston, MA, USA
| | - L Syrkin
- Department of Imaging and Center for Biomedical Imaging in Oncology, Dana-Farber Cancer Institute, 450 Brookline Ave, Boston, MA, 02215, USA
| | - G LeFever
- Department of Imaging and Center for Biomedical Imaging in Oncology, Dana-Farber Cancer Institute, 450 Brookline Ave, Boston, MA, 02215, USA
| | - A D Van den Abbeele
- Department of Imaging and Center for Biomedical Imaging in Oncology, Dana-Farber Cancer Institute, 450 Brookline Ave, Boston, MA, 02215, USA.,Department of Radiology, Brigham and Women's Hospital, Boston, MA, USA.,Harvard Medical School, Boston, MA, USA
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Rattay T, Veal C, Azria D, Chang-Claude J, Davidson S, Dunning A, de Ruysscher D, Fachal L, Gutierrez-Enriquez S, Lambin P, Rancati T, Rosenstein B, Seibold P, Sperk E, Symonds R, Vega A, Veldeman L, Webb A, West C, Talbot C. Genome wide association study of acute radiation toxicity and quality of life in breast cancer patients – results from the REQUITE cohort study. Eur J Cancer 2020. [DOI: 10.1016/s0959-8049(20)30554-2] [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: 10/23/2022]
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Canham S, Davidson S, Custodio K, Mauboules C, Good C, Wister AV, Bosma H. HEALTH NEEDS OF OLDER HOMELESS PERSONS WHO ARE TRANSITIONING FROM HOSPITAL TO SHELTER/HOUSING. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.209] [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: 11/12/2022] Open
Affiliation(s)
- S Canham
- Gerontology Research Centre, Simon Fraser University, Vancouver, British Columbia, Canada
| | - S Davidson
- Gerontology Research Centre, Simon Fraser University, Vancouver, BC, Canada
| | - K Custodio
- Providence Health Care, Vancouver, BC, Canada
| | - C Mauboules
- Homelessness Services Association of BC, Vancouver, BC, Canada
| | - C Good
- Homelessness Services Association of BC, Vancouver, BC, Canada
| | - A V Wister
- Gerontology Research Centre, Simon Fraser University, Vancouver, BC, Canada
| | - H Bosma
- Providence Health Care, Vancouver, BC, Canada
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Stewart H, Mahmood A, Davidson S, Kaur J. URBAN ECOLOGY, CLIMATE CHANGE, AND AGING. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.037] [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: 11/12/2022] Open
Affiliation(s)
- H Stewart
- Simon Fraser University and The University of British Columbia, Surrey, British Columbia, Canada
| | - A Mahmood
- Gerontology Department at Simon Fraser University, Vancouver, British Columbia, Canada
| | - S Davidson
- Gerontology Department at Simon Fraser University, Vancouver, British Columbia, Canada
| | - J Kaur
- Gerontology Department at Simon Fraser University, Vancouver, British Columbia, Canada
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Davidson S, Yoong S, Mayes R. Has ambulatory care improved the management of acute biliary disease in a district general hospital? Int J Surg 2018. [DOI: 10.1016/j.ijsu.2018.05.280] [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: 11/28/2022]
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Davidson S, Yoong S, Mayes R. ACCESS for Abscesses: Can ambulatory care play a role? Int J Surg 2018. [DOI: 10.1016/j.ijsu.2018.05.532] [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: 10/28/2022]
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Holfeld J, Poelzl L, Graber M, Hirsch J, Lobenwein D, Zipperle J, Blumer M, Davidson S, Grimm M, Tepekoylu C. P532Mechanical preconditioning causes microvesicle release and induces angiogenesis via thrombospondin 1. Cardiovasc Res 2018. [DOI: 10.1093/cvr/cvy060.388] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- J Holfeld
- Innsbruck Medical University, Department of Cardiac Surgery, Innsbruck, Austria
| | - L Poelzl
- Innsbruck Medical University, Department of Cardiac Surgery, Innsbruck, Austria
| | - M Graber
- Innsbruck Medical University, Department of Cardiac Surgery, Innsbruck, Austria
| | - J Hirsch
- Innsbruck Medical University, Department of Cardiac Surgery, Innsbruck, Austria
| | - D Lobenwein
- Innsbruck Medical University, Department of Cardiac Surgery, Innsbruck, Austria
| | - J Zipperle
- AUVA trauma research center, Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, Vienna, Austria
| | - M Blumer
- Innsbruck Medical University, Department of Anatomy, Innsbruck, Austria
| | - S Davidson
- University College London, Hatter Cardiovascular Institute, London, United Kingdom
| | - M Grimm
- Innsbruck Medical University, Department of Cardiac Surgery, Innsbruck, Austria
| | - C Tepekoylu
- Innsbruck Medical University, Department of Cardiac Surgery, Innsbruck, Austria
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Rattay T, Johnson K, Azria D, Chang-Claude J, Davidson S, Dunning A, De Ruysscher D, Gutierrez-Enriquez S, Lambin P, Rancati T, Rosenstein B, Seibold P, Symonds R, Valdagni R, Vega A, Veldeman L, Webb A, Wenz F, West C, Talbot C. Acute toxicity and quality of life in breast cancer patients treated by radiotherapy – results from the REQUITE multi-centre cohort study. Eur J Cancer 2018. [DOI: 10.1016/s0959-8049(18)30404-0] [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: 11/25/2022]
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Kamoi S, Pretty CG, Chiew YS, Pironet A, Davidson S, Desaive T, Shaw GM, Chase JG. Stroke Volume estimation using aortic pressure measurements and aortic cross sectional area: Proof of concept. Annu Int Conf IEEE Eng Med Biol Soc 2018; 2015:1005-8. [PMID: 26736434 DOI: 10.1109/embc.2015.7318534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Accurate Stroke Volume (SV) monitoring is essential for patient with cardiovascular dysfunction patients. However, direct SV measurements are not clinically feasible due to the highly invasive nature of measurement devices. Current devices for indirect monitoring of SV are shown to be inaccurate during sudden hemodynamic changes. This paper presents a novel SV estimation using readily available aortic pressure measurements and aortic cross sectional area, using data from a porcine experiment where medical interventions such as fluid replacement, dobutamine infusions, and recruitment maneuvers induced SV changes in a pig with circulatory shock. Measurement of left ventricular volume, proximal aortic pressure, and descending aortic pressure waveforms were made simultaneously during the experiment. From measured data, proximal aortic pressure was separated into reservoir and excess pressures. Beat-to-beat aortic characteristic impedance values were calculated using both aortic pressure measurements and an estimate of the aortic cross sectional area. SV was estimated using the calculated aortic characteristic impedance and excess component of the proximal aorta. The median difference between directly measured SV and estimated SV was -1.4ml with 95% limit of agreement +/- 6.6ml. This method demonstrates that SV can be accurately captured beat-to-beat during sudden changes in hemodynamic state. This novel SV estimation could enable improved cardiac and circulatory treatment in the critical care environment by titrating treatment to the effect on SV.
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Holfeld J, Pölzl L, Graber M, Hirsch J, Lobenwein D, Zipperle J, Blumer M, Kirchmair E, Kirchmair R, Paulus P, Davidson S, Grimm M, Tepeköylü C. miR-19a-3p Containing Exosomes Improve Cardiac Function in Ischemic Myocardium. Thorac Cardiovasc Surg 2018. [DOI: 10.1055/s-0038-1627831] [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: 10/28/2022]
Affiliation(s)
- J. Holfeld
- Department of Cardiac Surgery, Medical University of Innsbruck, Innsbruck, Austria
| | - L. Pölzl
- Department of Cardiac Surgery, Medical University of Innsbruck, Innsbruck, Austria
| | - M. Graber
- Department of Cardiac Surgery, Medical University of Innsbruck, Innsbruck, Austria
| | - J. Hirsch
- Department of Cardiac Surgery, Medical University of Innsbruck, Innsbruck, Austria
| | - D. Lobenwein
- Department of Cardiac Surgery, Medical University of Innsbruck, Innsbruck, Austria
| | - J. Zipperle
- AUVA Research Centre Vienna, Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, Innsbruck, Austria
| | - M. Blumer
- Department of Anatomy, Medical University of Innsbruck, Innsbruck, Austria
| | - E. Kirchmair
- Department of Cardiac Surgery, Medical University of Innsbruck, Innsbruck, Austria
| | - R. Kirchmair
- Department of Internal Medicine III, Medical University of Innsbruck, Innsbruck, Austria
| | - P. Paulus
- Department of Anesthesiology, Medical University of Linz, Linz, Austria
| | - S. Davidson
- Hatter Cardiovascular Institute, University College London, London, United Kingdom
| | - M. Grimm
- Department of Cardiac Surgery, Medical University of Innsbruck, Innsbruck, Austria
| | - C. Tepeköylü
- Department of Cardiac Surgery, Medical University of Innsbruck, Innsbruck, Austria
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Davidson S, Bannon A, Gull S, Copeland P, Khosraviani K. Acute Uncomplicated Diverticulitis: Is Ambulatory Care Possible? A Review of Current Practice in an Emergency Surgical Unit. Int J Surg 2017. [DOI: 10.1016/j.ijsu.2017.08.163] [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: 11/26/2022]
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McCann C, Davidson S, Leung E, Wright F, Slodkowski E, Hong NL. Breast Ablation Therapy: A Novel Treatment Paradigm for Early Stage Breast Cancer Patients—Preclinical Evaluation in an In Vivo Porcine Breast Model. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.2065] [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: 10/18/2022]
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Pironet A, Dauby PC, Chase JG, Morimont P, Janssen N, Lambermont B, Davidson S, Desaive T. A comparison between four techniques to measure cardiac output. Annu Int Conf IEEE Eng Med Biol Soc 2017; 2016:2717-2720. [PMID: 28268881 DOI: 10.1109/embc.2016.7591291] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Cardiac output is an important variable when monitoring hemodynamic status. In particular, changes in cardiac output represent the goal of several circulatory management therapies. Unfortunately, cardiac output is very difficult to estimate, either in experimental or clinical settings. The goal of this work is to compare four techniques to measure cardiac output: pressure-volume catheter, aortic flow probe, thermodilution, and the PiCCO monitor. These four techniques were simultaneously used during experiments of fluid and endotoxin administration on 7 pigs. Findings show that, first, each individual technique is precise, with a relative coefficient of repeatability lower than 7 %. Second, 1 cardiac output estimate provided by any technique relates poorly to the estimates from the other 3, even if there is only small bias between the techniques. Third, changes in cardiac output detected by one technique are only detected by the others in 62 to 100 % of cases. This study confirms the difficulty of obtaining a reliable clinical cardiac output measurement. Therefore, several measurements using different techniques should be performed, if possible, and all such should be treated with caution.
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Tyser R, Miranda A, Davidson S, Srinivas S, Riley P. 5730Initiation of the first heart beat and its role in cardiomyocyte differentiation. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.5730] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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32
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Tepekoylu C, Poelzl L, Graber M, Hirsch J, Lobenwein D, Zipperle J, Blumer M, Kirchmair E, Kirchmair R, Paulus P, Davidson S, Grimm M, Holfeld J. 5921miR-19a-3p containing exosomes improve cardiac function in ischemic myocardium. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.5921] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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33
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Peters M, Brown D, Whelan L, Davidson S, Uranis C, Reece K, Spira N. PERSON-CENTERED LANGUAGE FOR RESPONSIVE BEHAVIOURS. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.2522] [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: 11/14/2022] Open
Affiliation(s)
- M. Peters
- Trillium Health Partners, Toronto, Ontario, Canada,
- University of Toronto, Toronto, Ontario, Canada,
| | - D. Brown
- University of Toronto, Toronto, Ontario, Canada,
- Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada,
| | - L. Whelan
- University of Toronto, Toronto, Ontario, Canada,
- St. Michael’s Hospital, Toronto, Ontario, Canada,
| | - S. Davidson
- University of Toronto, Toronto, Ontario, Canada,
- Baycrest Health Sciences, Toronto, Ontario, Canada,
| | - C. Uranis
- University of Toronto, Toronto, Ontario, Canada,
- Centre for Addiction and Mental Health, Toronto, Ontario, Canada
| | - K. Reece
- University Health Network, Toronto, Ontario, Canada,
| | - N. Spira
- University of Toronto, Toronto, Ontario, Canada,
- Michael Garron Hospital, Toronto, Ontario, Canada,
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Davidson S, Emonts R, Rotman M. ASSESSMENT, HOME SAFETY AND THE COGNITIVE PERFORMANCE TEST: A DISCONNECT IN PRACTICE OR PURPOSE? Innov Aging 2017. [DOI: 10.1093/geroni/igx004.1679] [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: 11/13/2022] Open
Affiliation(s)
- S. Davidson
- Occupational Therapy, Baycrest Health Sciences, Toronto, Ontario, Canada,
- University of Toronto, Toronto, Ontario, Canada
| | - R. Emonts
- University of Toronto, Toronto, Ontario, Canada
| | - M. Rotman
- University of Toronto, Toronto, Ontario, Canada
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Davidson S, Schulz M. INTIMACY, SEXUALITY AND DEMENTIA: THE LAST TABOO. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.4265] [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: 11/13/2022] Open
Affiliation(s)
- S. Davidson
- Occupational Therapy, Baycrest Health Sciences, Toronto, Ontario, Canada,
| | - M. Schulz
- Alzheimer Society of Canada, Toronto, Ontario, Canada
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Gilbert A, Davidson S, Velikova G, Sebag-Montefiore D. SP-0519: Collecting PROs in clinical practice to assess radiotherapy toxicity and develop normal tissue complication probability models. Radiother Oncol 2017. [DOI: 10.1016/s0167-8140(17)30959-3] [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: 11/30/2022]
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Joseph N, McWilliam A, Chang-Claude J, Davidson S, Johnson K, Rancati T, Talbot C, Webb A, West C, Choudhury A. PO-0754: Whole body Integral dose is associated with radiotherapy related fatigue in prostate cancer. Radiother Oncol 2016. [DOI: 10.1016/s0167-8140(16)32004-7] [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: 11/25/2022]
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Doo D, Guy M, Behbakht K, Davidson S, Sheeder J, Guntupalli S. Effect of preoperative chemotherapy on postoperative morbidity and mortality in patients undergoing surgery for ovarian cancer. Gynecol Oncol 2015. [DOI: 10.1016/j.ygyno.2015.03.038] [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: 11/30/2022]
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Talbot C, Azria D, Brookes A, Burr T, ChangClaude J, Davidson S, De uysscher D, Dunning A, Elliott R, Gutiérrez Enríquez S, Lambin P, Rancati T, Rosenstein B, Seibold P, Symonds R, Thierens H, Valdagni R, Vega A, Wenz F, Yuille M, West C. SP-0169: Validating predictive models and biomarkers for radiotherapy toxicity: the REQUITE project. Radiother Oncol 2015. [DOI: 10.1016/s0167-8140(15)40167-7] [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: 10/23/2022]
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Holch P, Davidson S, Routledge J, Henry A, Franks K, Gilbert A, Bamforth L, Absolom K, Velikova G. OC-0416: eRAPID: Electronic self-report and management of adverse-events for radical prostate radiotherapy (RT) patients. Radiother Oncol 2015. [DOI: 10.1016/s0167-8140(15)40412-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Glosson K, Hopkins B, Washburn S, Davidson S, Smith G, Earleywine T, Ma C. Effect of supplementing pasteurized milk balancer products to heat-treated whole milk on the growth and health of dairy calves. J Dairy Sci 2015; 98:1127-35. [DOI: 10.3168/jds.2014-8567] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2014] [Accepted: 10/25/2014] [Indexed: 11/19/2022]
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West C, Azria D, Chang-Claude J, Davidson S, Lambin P, Rosenstein B, De Ruysscher D, Talbot C, Thierens H, Valdagni R, Vega A, Yuille M. The REQUITE project: validating predictive models and biomarkers of radiotherapy toxicity to reduce side-effects and improve quality of life in cancer survivors. Clin Oncol (R Coll Radiol) 2014; 26:739-42. [PMID: 25267305 DOI: 10.1016/j.clon.2014.09.008] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2014] [Accepted: 09/04/2014] [Indexed: 12/25/2022]
Affiliation(s)
- C West
- University of Manchester, Manchester, UK.
| | - D Azria
- University of Montpellier, Montpellier, France
| | - J Chang-Claude
- German Cancer Research Centre (DKFZ), Heidelberg, Germany
| | - S Davidson
- The Christie NHS Foundation Trust, Manchester, UK
| | - P Lambin
- University of Maastricht (Maastro-GROW), Maastricht, The Netherlands
| | - B Rosenstein
- Mount Sinai School of Medicine, New York, NY, USA
| | | | - C Talbot
- University of Leicester, Leicester, UK
| | | | - R Valdagni
- Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - A Vega
- Fundación Pública Galega Medicina Xenómica, Santiago de Compostela, Spain
| | - M Yuille
- University of Manchester, Manchester, UK
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Fox A, Davidson S, McGinnis R, Cain S, Saunders N, McLean S. Exploring the use of wireless inertial measurement units for biomechanical analysis of side-step cutting manoeuvres. J Sci Med Sport 2014. [DOI: 10.1016/j.jsams.2014.11.149] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Cappelli M, Davidson S, Racek J, Leon S, Vloet M, Tataryn K, Gillis K, Freeland A, Carver J, Thatte S, Lowe J. Transitioning Youth into Adult Mental Health and Addiction Services: An Outcomes Evaluation of the Youth Transition Project. J Behav Health Serv Res 2014; 43:597-610. [DOI: 10.1007/s11414-014-9440-9] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Grassian AR, Parker S, Davidson S, Divakaruni A, Green C, Zhang X, Slocum K, Pu M, Lin F, Vickers C, Joud-Caldwell C, Chung F, Yin H, Handly E, Straub C, Growney JD, Heiden MV, Murphy A, Pagliarini R, Metallo C. Abstract LB-139: IDH1 mutations alter citric acid cycle metabolism and increase dependence on oxidative mitochondrial metabolism. Cancer Res 2014. [DOI: 10.1158/1538-7445.am2014-lb-139] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Mutations in the genes encoding isocitrate dehydrogenase 1 and 2 (IDH1/2) occur in a variety of tumor types, resulting in production of the proposed oncometabolite, 2-hydroxyglutarate (2-HG). How mutant IDH alters central carbon metabolism, though, remains unclear. To address this question, we performed 13C metabolic flux analysis (MFA) on an isogenic cell panel containing heterozygous IDH1/2 mutations. We observe a dramatic and consistent decrease in the ability of IDH1, but not IDH2, mutant cell lines to utilize reductive glutamine metabolism via the carboxylation of α-ketoglutarate to isocitrate. Additionally we find that cells with IDH1 mutations exhibit increased oxidative tricarboxylic acid (TCA) metabolism. Similar metabolic trends were observed in vivo as well, and also in endogenous, non-engineered IDH1/2 mutant cell lines. Interestingly, IDH1-mutant specific inhibitors were unable to reverse the decrease in reductive metabolism, suggesting that this metabolic phenotype is independent of 2-HG. Furthermore, this metabolic reprogramming increases the sensitivity of IDH1 mutant cells to hypoxia or electron transport chain (ETC) inhibition in vitro. IDH1 mutant cells also grow poorly as subcutaneous xenografts within hypoxic in vivo microenvironments. These results suggest that exploiting metabolic defects specific to IDH1 mutant cells could be an interesting avenue to explore therapeutically.
Citation Format: Alexandra R. Grassian, Seth Parker, Shawn Davidson, Ajit Divakaruni, Courtney Green, Xiamei Zhang, Kelly Slocum, Minying Pu, Fallon Lin, Chad Vickers, Carol Joud-Caldwell, Franklin Chung, Hong Yin, Erika Handly, Christopher Straub, Joseph D. Growney, Matt Vander Heiden, Anne Murphy, Raymond Pagliarini, Christian Metallo. IDH1 mutations alter citric acid cycle metabolism and increase dependence on oxidative mitochondrial metabolism. [abstract]. In: Proceedings of the 105th Annual Meeting of the American Association for Cancer Research; 2014 Apr 5-9; San Diego, CA. Philadelphia (PA): AACR; Cancer Res 2014;74(19 Suppl):Abstract nr LB-139. doi:10.1158/1538-7445.AM2014-LB-139
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Burhenn P, Zachariah F, Kildoo C, Shayani S, van Zyl C, Buga S, Davidson S, McLin Y, Hurria A. Implementing an educational initiative to promote sleep. J Geriatr Oncol 2014. [DOI: 10.1016/j.jgo.2014.09.118] [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: 11/28/2022]
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48
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Choudhury A, Arthur C, Malik J, Mandall P, Taylor C, Alam N, Tran A, Livsey J, Elliott T, Davidson S, Logue J, Wylie J. Patient-reported Outcomes and Health-related Quality of Life in Prostate Cancer Treated with a Single Fraction of High Dose Rate Brachytherapy Combined with Hypofractionated External Beam Radiotherapy. Clin Oncol (R Coll Radiol) 2014; 26:661-7. [DOI: 10.1016/j.clon.2014.06.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2013] [Revised: 05/29/2014] [Accepted: 06/23/2014] [Indexed: 11/29/2022]
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49
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Symonds P, Gourley C, Davidson S, West C, Dive C, Paul J, Carty K, McCartney E, Rai D, Banerjee S, Jackson D, Lord R, McCormack M, Hudson E, Reed N, Flubacher M, Jankowska P, Powell M. Circca: a Randomised Double Blind Phase Ii Trial of Carboplatin-Paclitaxel Plus Cediranib Versus Carboplatin-Paclitaxel Plus Placebo in Metastatic/Recurrent Cervical Cancer. (Cruk Grant Ref: C1256/A11416). Ann Oncol 2014. [DOI: 10.1093/annonc/mdu438.26] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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50
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Kong R, Trimmings A, Hutchinson N, Gill R, Agarwal S, Davidson S, Arcari M. Consensus recommendations for using the Multiplate®for platelet function monitoring before cardiac surgery. Int J Lab Hematol 2014; 37:143-7. [DOI: 10.1111/ijlh.12279] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2014] [Accepted: 06/24/2014] [Indexed: 12/31/2022]
Affiliation(s)
- R. Kong
- Royal Sussex County Hospital; Brighton UK
| | | | | | - R. Gill
- University Hospital Southampton; Southampton UK
| | - S. Agarwal
- Liverpool Heart and Chest Hospital; Liverpool UK
| | - S. Davidson
- Royal Brompton and Harefield NHSFT; London UK
| | - M. Arcari
- UPMC Beacon Hospital; Dublin Ireland
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