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Nguyen K, Roche S, Lavoute C, Reant P, Donal E, Haentjens J, Consolino E, Odent S, Habib G, Eicher JC, Faivre L, Rooryck-Thambo C, Charron P, Casalta A, Michel N. Genetic spectrum of hypertrophic cardiomyopathy revisited. Whole Exome Sequencing reveals extreme genetic heterogeneity, new gene mutations in a multicenter series of 200 patients. Archives of Cardiovascular Diseases Supplements 2019. [DOI: 10.1016/j.acvdsp.2018.10.059] [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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52
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Nguyen K, Sherma J. Development of quantitative HPTLC–Densitometry methods for the analysis of amiodarone HCl, carvedilol, doxylamine succinate, magnesium salicylate, metoprolol succinate, nebivolol HCl, and salicylamide using a model process developed earlier for the transfer of TLC screening methods. ACTA CHROMATOGR 2018. [DOI: 10.1556/1326.2017.00367] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- K. Nguyen
- Department of Chemistry, Lafayette College, Easton, PA, USA
| | - J. Sherma
- Department of Chemistry, Lafayette College, Easton, PA, USA
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Nguyen K, Mehta P, Conway D. NECROTIZING FASCIITIS SECONDARY TO CLOSTRIDIUM SEPTICUM IN A PATIENT WITH MYD88 DEFICIENCY. Ann Allergy Asthma Immunol 2018. [DOI: 10.1016/j.anai.2018.09.353] [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: 10/27/2022]
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McInally SG, Hagen KD, Nosala C, Williams J, Nguyen K, Booker J, Jones K, Dawson SC. Robust and stable transcriptional repression in Giardia using CRISPRi. Mol Biol Cell 2018; 30:119-130. [PMID: 30379614 PMCID: PMC6337905 DOI: 10.1091/mbc.e18-09-0605] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Giardia lamblia is a binucleate protistan parasite causing significant diarrheal disease worldwide. An inability to target Cas9 to both nuclei, combined with the lack of nonhomologous end joining and markers for positive selection, has stalled the adaptation of CRISPR/Cas9-mediated genetic tools for this widespread parasite. CRISPR interference (CRISPRi) is a modification of the CRISPR/Cas9 system that directs catalytically inactive Cas9 (dCas9) to target loci for stable transcriptional repression. Using a Giardia nuclear localization signal to target dCas9 to both nuclei, we developed efficient and stable CRISPRi-mediated transcriptional repression of exogenous and endogenous genes in Giardia. Specifically, CRISPRi knockdown of kinesin-2a and kinesin-13 causes severe flagellar length defects that mirror defects with morpholino knockdown. Knockdown of the ventral disk MBP protein also causes severe structural defects that are highly prevalent and persist in the population more than 5 d longer than defects associated with transient morpholino-based knockdown. By expressing two guide RNAs in tandem to simultaneously knock down kinesin-13 and MBP, we created a stable dual knockdown strain with both flagellar length and disk defects. The efficiency and simplicity of CRISPRi in polyploid Giardia allows rapid evaluation of knockdown phenotypes and highlights the utility of CRISPRi for emerging model systems.
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Affiliation(s)
- S G McInally
- Department of Microbiology and Molecular Genetics, University of California, Davis, Davis, CA 95616
| | - K D Hagen
- Department of Microbiology and Molecular Genetics, University of California, Davis, Davis, CA 95616
| | - C Nosala
- Department of Microbiology and Molecular Genetics, University of California, Davis, Davis, CA 95616
| | - J Williams
- Department of Microbiology and Molecular Genetics, University of California, Davis, Davis, CA 95616
| | - K Nguyen
- Department of Microbiology and Molecular Genetics, University of California, Davis, Davis, CA 95616
| | - J Booker
- Department of Microbiology and Molecular Genetics, University of California, Davis, Davis, CA 95616
| | - K Jones
- Department of Microbiology and Molecular Genetics, University of California, Davis, Davis, CA 95616
| | - Scott C Dawson
- Department of Microbiology and Molecular Genetics, University of California, Davis, Davis, CA 95616
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Muraru D, Addetia K, Genovese D, Guta AC, Ochoa-Jimenez R, Aruta P, Veronesi F, Mor-Avi V, Previtero M, Guida V, Nguyen K, Iliceto S, Lang RM, Badano LP. P1589Right atrial volume is the major determinant of tricuspid annulus area in healthy subjects and in patients with functional tricuspid regurgitation due to various etiologies. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p1589] [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: 11/14/2022] Open
Affiliation(s)
- D Muraru
- University of Padua, Department of Cardiac, Thoracic and Vascular Sciences, Padua, Italy
| | - K Addetia
- University of Chicago Medicine, Heart & Vascular Center, Chicago, United States of America
| | - D Genovese
- University of Padua, Department of Cardiac, Thoracic and Vascular Sciences, Padua, Italy
| | - A C Guta
- University of Medicine and Pharmacy Carol Davila, Bucharest, Romania
| | | | - P Aruta
- University of Padua, Department of Cardiac, Thoracic and Vascular Sciences, Padua, Italy
| | - F Veronesi
- University of Bologna, Department of Electrical, Electronic and Information Engineering, Bologna, Italy
| | - V Mor-Avi
- University of Chicago Medicine, Heart & Vascular Center, Chicago, United States of America
| | - M Previtero
- University of Padua, Department of Cardiac, Thoracic and Vascular Sciences, Padua, Italy
| | - V Guida
- Italian Institute for Auxology IRCCS, Milan, Italy
| | - K Nguyen
- University of Padua, Department of Cardiac, Thoracic and Vascular Sciences, Padua, Italy
| | - S Iliceto
- University of Padua, Department of Cardiac, Thoracic and Vascular Sciences, Padua, Italy
| | - R M Lang
- University of Chicago Medicine, Heart & Vascular Center, Chicago, United States of America
| | - L P Badano
- University of Padua, Department of Cardiac, Thoracic and Vascular Sciences, Padua, Italy
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Richard P, Ader F, Roux M, Donal E, Eicher JC, Huttin O, Coisne D, Jondeau G, Damy T, Mansencal N, Nguyen K, Lavoute C, Tregouet DA, Habib G, Charron P. P2249Targeted panel sequencing and allelic spectrum in 95 unrelated adults with left ventricular non-compaction. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p2249] [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)
- P Richard
- AP-HP - Hospital Pitie-Salpetriere, Paris, France
| | - F Ader
- AP-HP - Hospital Pitie-Salpetriere, Paris, France
| | - M Roux
- INSERM UMRS 1166, Paris, France
| | - E Donal
- Hospital Pontchaillou of Rennes, Dept of Cardiology, Rennes, France
| | - J C Eicher
- University Hospital of Dijon, Dept of Cardiology, Dijon, France
| | - O Huttin
- University Hospital of Brabois, Dept of Cardiology, Nancy, France
| | - D Coisne
- University Hospital of Poitiers, Dept of Cardiology, Poitiers, France
| | - G Jondeau
- Hospital Bichat-Claude Bernard, Dept of Cardiology, Paris, France
| | - T Damy
- University Hospital Henri Mondor, Dept of Cardiology, Creteil, France
| | - N Mansencal
- University Hospital Ambroise Pare, Dept of Cardiology, Boulogne-Billancourt, France
| | - K Nguyen
- Hospital La Timone of Marseille, Dept of Genetics, Marseille, France
| | - C Lavoute
- Hospital La Timone of Marseille, Dept of Cardiology, Marseille, France
| | | | - G Habib
- Hospital La Timone of Marseille, Dept of Cardiology, Marseille, France
| | - P Charron
- AP-HP - Hospital Pitie-Salpetriere, Paris, France
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Peron C, Di Rocco F, Plaisant F, Claris O, Nguyen K, Beuriat P, Szathmari A, Mottolese C. Devenir des hydrocéphalies posthémorragie intraventriculaire sévère du prématuré. Qui a besoin d’une valve ? Neurochirurgie 2018. [DOI: 10.1016/j.neuchi.2018.05.144] [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: 11/16/2022]
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58
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Zaki T, Nguyen K, Venkatesh A, Lott J. 604 Health insurance status and outcomes among adults my mycosis fungoides in the United States. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.612] [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: 10/17/2022]
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59
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Elliott JE, Teutsch P, Jones CE, Li R, Yang J, Nguyen K, Jacobs J, Li Z, Hsiai T, Lim MM. 0119 Effect Of Sleep On The Brain-Heart-Gut Axis In A Mouse Model Of TBI And PTSD. Sleep 2018. [DOI: 10.1093/sleep/zsy061.118] [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)
- J E Elliott
- Department of Neurology, Oregon Health & Science University, Portland, OR
- VA Portland Health Care System, Portland, OR
| | - P Teutsch
- VA Portland Health Care System, Portland, OR
| | - C E Jones
- Department of Neurology, Oregon Health & Science University, Portland, OR
- VA Portland Health Care System, Portland, OR
| | - R Li
- VA Greater Los Angeles, Los Angeles, CA
- Department of Medicine, University of California, Los Angeles, CA
| | - J Yang
- VA Greater Los Angeles, Los Angeles, CA
- Department of Medicine, University of California, Los Angeles, CA
| | - K Nguyen
- VA Greater Los Angeles, Los Angeles, CA
- Department of Medicine, University of California, Los Angeles, CA
| | - J Jacobs
- VA Greater Los Angeles, Los Angeles, CA
- Department of Medicine, University of California, Los Angeles, CA
| | - Z Li
- VA Greater Los Angeles, Los Angeles, CA
- Department of Medicine, University of California, Los Angeles, CA
| | - T Hsiai
- VA Greater Los Angeles, Los Angeles, CA
- Department of Medicine, University of California, Los Angeles, CA
| | - M M Lim
- Department of Neurology, Oregon Health & Science University, Portland, OR
- VA Portland Health Care System, Portland, OR
- Department of Behavioral Neuroscience; Medicine; Oregon Institute of Occupational Health Sciences, Oregon Health & Science University, Portland, OR
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Yurcheshen M, Marsella J, Nguyen K, Marcus J, Marcus C, Dorsey E, Pigeon W. 1066 Interrater Reliability in Telemedicine vs. In-person Evaluations for Obstructive Sleep Apnea. Sleep 2018. [DOI: 10.1093/sleep/zsy061.1065] [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)
- M Yurcheshen
- University of Rochester School of Medicine and Dentistry, Rochester, NY
| | - J Marsella
- University of Rochester School of Medicine and Dentistry, Rochester, NY
| | - K Nguyen
- Saddleback Memorial Hospital, Los Angeles, CA
| | - J Marcus
- University of Rochester School of Medicine and Dentistry, Rochester, NY
| | - C Marcus
- University of Rochester School of Medicine and Dentistry, Rochester, NY
| | - E Dorsey
- University of Rochester School of Medicine and Dentistry, Rochester, NY
| | - W Pigeon
- University of Rochester School of Medicine and Dentistry, Rochester, NY
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61
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Kransdorf E, Chang D, Nguyen K, Tran T, Patel A, Levine R, Dimbil S, Patel J, Ramzy D, Kobashigawa J. Liver Fibrosis Predicts Survival After Heart Transplant. J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.1090] [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: 10/17/2022] Open
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Ferretto S, Testolina M, Nguyen K, Martin M, Susana A, Migliore F, Iliceto S, Leoni L, Bertaglia E. P1234Pocket complications after device-based therapy in patients with chronic heart failure. Europace 2018. [DOI: 10.1093/europace/euy015.715] [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 Ferretto
- University Hospital of Padova, Cardiac, Vascular and Thoracic Science, Padua, Italy
| | - M Testolina
- University Hospital of Padova, Cardiac, Vascular and Thoracic Science, Padua, Italy
| | - K Nguyen
- University Hospital of Padova, Cardiac, Vascular and Thoracic Science, Padua, Italy
| | - M Martin
- University Hospital of Padova, Cardiac, Vascular and Thoracic Science, Padua, Italy
| | - A Susana
- University Hospital of Padova, Cardiac, Vascular and Thoracic Science, Padua, Italy
| | - F Migliore
- University Hospital of Padova, Cardiac, Vascular and Thoracic Science, Padua, Italy
| | - S Iliceto
- University Hospital of Padova, Cardiac, Vascular and Thoracic Science, Padua, Italy
| | - L Leoni
- University Hospital of Padova, Cardiac, Vascular and Thoracic Science, Padua, Italy
| | - E Bertaglia
- University Hospital of Padova, Cardiac, Vascular and Thoracic Science, Padua, Italy
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63
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Metwalli KA, Do MA, Nguyen K, Mallick S, Kin K, Farokhnia N, Jun G, Fakhouri WD. Interferon Regulatory Factor 6 Is Necessary for Salivary Glands and Pancreas Development. J Dent Res 2017; 97:226-236. [PMID: 28898113 DOI: 10.1177/0022034517729803] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [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: 11/15/2022] Open
Abstract
Interferon regulatory factor 6 ( IRF6) acts as a tumor suppressor and controls cell differentiation in ectodermal and craniofacial tissues by regulating expression of target genes. Haploinsufficiency of IRF6 causes Van der Woude and popliteal pterygium syndrome, 2 syndromic forms of cleft lip and palate. Around 85% of patients with Van der Woude express pits on the lower lip that continuously or intermittently drain saliva, and patients with the common cleft lip and palate have a higher prevalence of dental caries and gingivitis. This study aims to identify the role of IRF6 in development of exocrine glands, specifically the major salivary glands. Our transgenic mouse model that expresses LacZ reporter under the control of the human IRF6 enhancer element showed high expression of IRF6 in major and minor salivary glands and ducts. Immunostaining data also confirmed the endogenous expression of IRF6 in the developing ductal, serous, and mucous acinar cells of salivary glands. As such, we hypothesized that Irf6 is important for proper development of salivary glands and potentially other exocrine glands. Loss of Irf6 in mice causes an increase in the proliferation level of salivary cells, disorganized branching morphogenesis, and a lack of differentiated mucous acinar cells in submandibular and sublingual glands. Expression and localization of the acinar differentiation marker MIST1 were altered in Irf6-null salivary gland and pancreas. The RNA-Seq analysis demonstrated that 168 genes are differentially expressed and confer functions associated with transmembrane transporter activity, spliceosome, and transcriptional regulation. Furthermore, expression of genes involved in the EGF pathway-that is, Ereg, Ltbp4, Matn1, Matn3, and Tpo-was decreased at embryonic day 14.5, while levels of apoptotic proteins were elevated at postnatal day 0. In conclusion, our data report a novel role of Irf6 in exocrine gland development and support a rationale for performing exocrine functional tests for patients with IRF6-damaging mutations.
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Affiliation(s)
- K A Metwalli
- 1 Center for Craniofacial Research, Department of Diagnostic and Biomedical Sciences, School of Dentistry, University of Texas Health Science Center at Houston, Houston, TX, USA
| | - M A Do
- 1 Center for Craniofacial Research, Department of Diagnostic and Biomedical Sciences, School of Dentistry, University of Texas Health Science Center at Houston, Houston, TX, USA
| | - K Nguyen
- 1 Center for Craniofacial Research, Department of Diagnostic and Biomedical Sciences, School of Dentistry, University of Texas Health Science Center at Houston, Houston, TX, USA
| | - S Mallick
- 1 Center for Craniofacial Research, Department of Diagnostic and Biomedical Sciences, School of Dentistry, University of Texas Health Science Center at Houston, Houston, TX, USA
| | - K Kin
- 1 Center for Craniofacial Research, Department of Diagnostic and Biomedical Sciences, School of Dentistry, University of Texas Health Science Center at Houston, Houston, TX, USA
| | - N Farokhnia
- 1 Center for Craniofacial Research, Department of Diagnostic and Biomedical Sciences, School of Dentistry, University of Texas Health Science Center at Houston, Houston, TX, USA
| | - G Jun
- 2 Epidemiology, Human Genetics and Environmental Sciences, School of Public Health, University of Texas Health Science Center at Houston, Houston, TX, USA
| | - W D Fakhouri
- 1 Center for Craniofacial Research, Department of Diagnostic and Biomedical Sciences, School of Dentistry, University of Texas Health Science Center at Houston, Houston, TX, USA.,3 Department of Pediatrics, McGovern Medical School, University of Texas Health Science Center, Houston, TX, USA
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Autenrieth ME, Horn T, Kurtz F, Nguyen K, Morgenstern A, Bruchertseifer F, Schwaiger M, Blechert M, Seidl C, Senekowitsch-Schmidtke R, Gschwend JE, Scheidhauer K. [Intravesical radioimmunotherapy of carcinoma in situ of the urinary bladder after BCG failure]. Urologe A 2017; 56:40-43. [PMID: 27885456 DOI: 10.1007/s00120-016-0273-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
BACKGROUND In failure to respond to bacillus Calmette-Guérin (BCG) in patients with carcinoma in situ (CIS) of the urinary bladder, radical cystectomy remains the mainstay after BCG failure. OBJECTIVES The aim of this pilot study was to evaluate tolerability and safety of the α‑emitter radioimmunoconjugate instillation in patients after BCG failure. MATERIALS AND METHODS Nine patients were included. After emptying the bladder via a transurethral catheter, Bi-213-anti-EGFR-mAb was instilled. Treatment was terminated by emptying of the radioimmunoconjugate from the bladder 120 min after instillation. Efficacy was evaluated via endoscopy and histology 6 weeks after instillation. RESULTS All patients showed excellent toleration of the treatment without any side effects. Treatment resulted in complete eradication of tumor cells in 3 patients and persistent tumor detection in the other 6 patients. CONCLUSIONS Intravesical instillation of Bi-213-anti-EGFR-mAb is a promising therapeutic option for treatment of in situ bladder cancer after BCG failure for patients who wish to preserve the bladder.
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Affiliation(s)
- M E Autenrieth
- Klinik und Poliklinik für Urologie, Klinikum rechts der Isar, TU München, München, Deutschland.
| | - T Horn
- Klinik und Poliklinik für Urologie, Klinikum rechts der Isar, TU München, München, Deutschland
| | - F Kurtz
- Klinik und Poliklinik für Urologie, Klinikum rechts der Isar, TU München, München, Deutschland
| | - K Nguyen
- Klinik und Poliklinik für Urologie, Klinikum rechts der Isar, TU München, München, Deutschland
| | - A Morgenstern
- Institut für Transurane der Europäischen Kommission, Karlsruhe, Deutschland
| | - F Bruchertseifer
- Institut für Transurane der Europäischen Kommission, Karlsruhe, Deutschland
| | - M Schwaiger
- Klinik und Poliklinik für Nuklearmedizin, Klinikum rechts der Isar, TU München, München, Deutschland
| | - M Blechert
- Klinik und Poliklinik für Nuklearmedizin, Klinikum rechts der Isar, TU München, München, Deutschland
| | - C Seidl
- Klinik und Poliklinik für Nuklearmedizin, Klinikum rechts der Isar, TU München, München, Deutschland
| | - R Senekowitsch-Schmidtke
- Klinik und Poliklinik für Nuklearmedizin, Klinikum rechts der Isar, TU München, München, Deutschland
| | - J E Gschwend
- Klinik und Poliklinik für Urologie, Klinikum rechts der Isar, TU München, München, Deutschland
| | - K Scheidhauer
- Klinik und Poliklinik für Nuklearmedizin, Klinikum rechts der Isar, TU München, München, Deutschland
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Nguyen K, Ryan L, White E, Downie S. NATIONAL TRENDS IN OMBUDSMAN RESIDENT ADVOCACY IN LONG-TERM CARE FACILITIES (2006–2015). Innov Aging 2017. [DOI: 10.1093/geroni/igx004.1910] [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)
- K. Nguyen
- NORC at the University of Chicago, Bethesda, Maryland
| | - L. Ryan
- US Department of Health and Human Services’ Administration for Community Living, Washington, District of Columbia,
| | - E. White
- NORC at the University of Chicago, Bethesda, Maryland
| | - S. Downie
- NORC at the University of Chicago, Bethesda, Maryland
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Nguyen K, Min M, Holloway L, Jameson M, Rumley C, Fowler A, Lee M, Forstner D, Rai R, Liney G. PO-0615: Can diffusion-weighted MRI predict for xerostomia and QoL in head and neck patients receiving RT? Radiother Oncol 2017. [DOI: 10.1016/s0167-8140(17)31052-6] [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: 11/29/2022]
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Loi S, Khosla R, Nguyen K, Lautenschlager N, Velakoulis D. A pilot Project Exploring the Utility and Acceptability of a Socially-assistive Robot in an Assessment Unit for People with Neuropsychiatric Symptoms. Eur Psychiatry 2017. [DOI: 10.1016/j.eurpsy.2017.01.321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Abstract
ObjectivesSocially-assistive robots have been used with older adults with cognitive impairment in residential care, and found to improve mood and well-being. However, there is little known about the potential benefits in adults with other neuropsychiatric symptoms.AimsThe aim of this project was explore the utility and acceptability of a socially-assistive robot in engaging adults with a variety of neuropsychiatric symptoms.MethodsBetty, a socially-assistive robot was installed in a unit which specialises in the assessment and diagnosis of adults presenting with neuropsychiatric symptoms. She is 39 cm tall, has a baby-face appearance and has the ability to engage individuals through personalised services which can be programmed according to individuals’ preferences. These include singing songs and playing games. Training for the nursing staff who were responsible for incorporating Betty into the unit activities was provided. The frequency, duration and type of activity which Betty was involved in was recorded. Patients admitted who could provide informed consent were able to be included in the project. These participants completed pre- and post-questionnaires.ResultsEight patients (mean age 54.4 years, SD 13.6) who had diagnoses ranging from depression and schizophrenia participated. Types of activities included singing songs, playing Bingo and reading the news. Participants reported that they were comfortable with Betty and did not feel concerned in her presence. They enjoyed interacting with her.ConclusionsThis pilot project demonstrated that participants found Betty to be acceptable and she was useful in engaging them in activities. Future directions would involve larger sample sizes and different settings.Disclosure of interestThe authors have not supplied their declaration of competing interest.
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Jeewa A, Imamura M, Canter C, Niebler R, VanderPluym C, Rosenthal D, Kirklin J, Tresler M, McMullan M, Morell V, Turrentine M, Ameduri R, Nguyen K, Kanter K, Conway J, Gajarski R, Fraser C. Post-Transplant Outcomes of Patients Supported with the Berlin Heart EXCOR as a Bridge to Transplantation: A Multi-Institutional Study. J Heart Lung Transplant 2017. [DOI: 10.1016/j.healun.2017.01.428] [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] Open
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Nguyen K, Sun JC, Hortobagyi GN, Andreeff M, Battula VL. Abstract P5-07-03: GD2-mediated FAK signaling regulates breast cancer stem cell function in triple negative breast cancer. Cancer Res 2017. [DOI: 10.1158/1538-7445.sabcs16-p5-07-03] [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: 11/16/2022]
Abstract
Abstract
Ganglioside GD2 identifies breast cancer stem cells (BCSCs, Battula et al., JCI, 2012) and expression of GD2 is tightly regulated by GD3 synthase (GD3S). GD3S is highly expressed in GD2+ cells and inhibition of GD3S inhibits tumor formation and metastasis of breast cancer cells. However, the mechanism of GD2-mediated regulation of BCSC function is not known. Here we hypothesize that GD2 regulates signaling pathways involved in cell adhesion, migration and invasion of breast cancer cells. To identify these signaling pathways, antibody micro-arrays were used with 850 validated antibodies specific to total or phosphorylated proteins. Interestingly, focal adhesion kinase (FAK) was the most significantly phosphorylated protein in GD2+ compared to GD2- cells (S910 and S722). In addition, expression of FAK downstream mediators including Csk, PKCq, PKCl/I, Pyk2, and p38MAPK, was up-regulated in GD2+ compared to GD2- cells. Western blot analysis of FACS sorted SUM159 cells also revealed increased phosphorylation of FAK >80% at Y397 and >25% at Y861 in GD2+ compared to GD2- cells. FAK downstream targets including paxillin, p130 Cas, pERK were also up-regulated in GD2+ cells compared to GD2- cells indicating definitive activation of FAK signaling in GD2+ BCSCs. To investigate the functional role of GD2 in FAK mediated functions, we genetically deleted GD3S using the CRISPR knock-out system in SUM159 cells. only <1% GD2expression compared to >20% in parental cells was observed. GD3S-KO cells grew 5-10% slower in cell culture mostly because of the reduction (15±5%) in adherence. Trans-well assays revealed 3-5 fold reduction in migration and invasion of GD3S-KO compared to parental cells. These data indicate that GD2 and GD3S are not only the markers of BCSCs but also regulators of their function. Finally, we tested the effect of FAK inhibitor (PF-573228) against GD2+ BCSCs and GD3S-KO SUM159 cells. PF-573228 treatment decreased the number of mammospheres generated by GD2+ cells 3-4 fold in a dose dependent manner (100nM-1µm). In addition, treatment of PF-573228, inhibited migration and invasion of GD2+ cells 2 and 3 fold, respectively. However, treatment with PF-573228 on GD3S-KO cells further reduced their ability to migrate and invade by over 70% compared to untreated cells. In addition, GD3S-KO cells failed to form any mammospheres when cultured under low adherence conditions (p<0.00001), whereas the parental cells formed 15-20 mammospheres per 1,000 cells plated. In conclusion, our data demonstrate that FAK signaling is activated in GD2+ cells but that FAK inhibition alone may not be sufficient to inhibit BCSC function. Combined FAK and GD3S inhibition may exert highly synergistic effects against BCSCs.
Citation Format: Nguyen K, Sun JC, Hortobagyi GN, Andreeff M, Battula VL. GD2-mediated FAK signaling regulates breast cancer stem cell function in triple negative breast cancer [abstract]. In: Proceedings of the 2016 San Antonio Breast Cancer Symposium; 2016 Dec 6-10; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2017;77(4 Suppl):Abstract nr P5-07-03.
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Affiliation(s)
- K Nguyen
- The University of Texas MD Anderson Cancer Center, Houston, TX
| | - JC Sun
- The University of Texas MD Anderson Cancer Center, Houston, TX
| | - GN Hortobagyi
- The University of Texas MD Anderson Cancer Center, Houston, TX
| | - M Andreeff
- The University of Texas MD Anderson Cancer Center, Houston, TX
| | - VL Battula
- The University of Texas MD Anderson Cancer Center, Houston, TX
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Battula VL, Nguyen K, Sun JC, Dasgupta A, Bartholomeusz C, Andreeff M. Abstract P5-07-02: ST8SIA1 regulates tumorigenesis in triple negative breast cancer. Cancer Res 2017. [DOI: 10.1158/1538-7445.sabcs16-p5-07-02] [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: 11/16/2022]
Abstract
Abstract
Recurrence in breast cancer is mainly due to metastases and drug resistance in a fraction of primary tumors cells which are also known as cancer stem cells or tumor initiating cells. We found that Ganglioside GD2 identifies breast cancer stem cell (BCSCs) in triple negative breast cancer (TNBC) and that GD2 biosynthesis is tightly regulated by enzyme ST8SIA1 (GD3 synthase) in GD2+ cells. We have reported that ST8SIA1 is highly expressed in TNBC and its expression is highly correlated with p53 mutations primary tumors (Yan et al, SABCS abstract 2016). Here we hypothesize that ST8SIA1 has a functional role in BCSC mediated tumorigenesis in TNBC. To test the hypothesis, we deleted ST8SIA1 in SUM159 cells using CRISPR-Cas9 technology. As expected, deletion of ST8SIA1 in SUM159 cells reduced GD2+ cells from 17±1.5% to 0.3±0.1%. However, cell proliferation assay revealed no significant difference between ST8SIA1-KO and Cas9 control cells. In contrast, in-vitro tumorigenesis by soft-agar assays revealed a complete loss of colony formation in ST8SIA1-KO cells, whereas Cas9 control cells produced 30±10 colonies out of 1000 cells plated. To investigate tumor initiation potential, ST8SIA1-KO- or Cas9 control- SUM159 cells were transplanted in mammary fat pad of NSG mice. Cas9 control cells produced tumors within 1-2 weeks and reached the maximum allowed size by IACUC (1.5cm) within 3-4 weeks. In contrast, ST8SIA1-KO cells failed to produce any tumors even 15 weeks after injections. In addition, survival analysis by log-rank test revealed that most of the cas9 control cell injected mice died within 4 weeks after cell implantation whereas no deaths were observed in ST8SIA1-KO cells injected mice even 100 days after tumor implantation. These data indicate that loss of ST8SIA1 in TNBC cells depletes GD2+ BCSCs and inhibits in-vitro and in-vivo tumorigenesis.
To investigate gene expression changes due to loss of ST8SIA1 in CRISPR knockout cells, we analyzed mRNA expression in ST8SIA1-KO- and Cas9 control- SUM159 cells by RNAseq analysis (done in triplicates for each cell type). At p<0.05 and fold change >2, we found 1502 genes down-regulated and 842 genes up-regulated in ST8SIA1-KO- compared to cas9 control- cells. Ingenuity pathway analysis revealed that several stem cell associated signaling pathway including, wnt, stat3, NFκB, nanog and IL8 whereas tumor suppressor PTEN and p38 MAPK signaling were activated in ST8SIA1-KO- compared to cas9 control- cells. In specific, proteins associated with stem cell function including NOTCH3, PDGFRB, PDGFRA, VCAM1, CXCR4, CXCL12, SOX2, wnt5a were down regulated in ST8SIA1-KO cells whereas DKK1 which acts as an antagonist for wnt-β-catenin signaling, was up-regulated in ST8SIA1-KO cells. These findings were validated by flow cytometry and western blot analysis using specific antibodies. In conclusion, our data suggests that deletion of ST8SIA1 in TNBC cells depletes BCSCs and inhibits tumorigenesis in-vitro and in-vivo. Development of specific inhibitors of ST8SIA1 could be of potential therapeutic value for patients with TNBC.
Citation Format: Battula VL, Nguyen K, Sun JC, Dasgupta A, Bartholomeusz C, Andreeff M. ST8SIA1 regulates tumorigenesis in triple negative breast cancer [abstract]. In: Proceedings of the 2016 San Antonio Breast Cancer Symposium; 2016 Dec 6-10; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2017;77(4 Suppl):Abstract nr P5-07-02.
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Affiliation(s)
- VL Battula
- The University of Texas MD Anderson Cancer Center, Houston, TX
| | - K Nguyen
- The University of Texas MD Anderson Cancer Center, Houston, TX
| | - JC Sun
- The University of Texas MD Anderson Cancer Center, Houston, TX
| | - A Dasgupta
- The University of Texas MD Anderson Cancer Center, Houston, TX
| | - C Bartholomeusz
- The University of Texas MD Anderson Cancer Center, Houston, TX
| | - M Andreeff
- The University of Texas MD Anderson Cancer Center, Houston, TX
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Battula VL, Piyaranthna B, Nguyen K, Sun JC, Jin F, Coarfa C, Nagireddy P, Andreeff M. Abstract P6-02-01: Metabolic stress induces GD2 expression and cancer stem cell phenotype in triple negative breast cancer. Cancer Res 2017. [DOI: 10.1158/1538-7445.sabcs16-p6-02-01] [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: 11/16/2022]
Abstract
Abstract
Breast cancer stem cells (BCSCs) have been characterized as a fraction of cells in primary tumors that are drug resistant and have metastatic potential. Ganglioside GD2 has been shown by us and others as a marker for BCSCs. Furthermore, nutrient deprivation associated metabolic stress seen during tumor progression is reportedly associated with the cancer stem cell phenotype. We hypothesized that metabolic stress could induce spontaneous generation of GD2+ BCSCs during tumor progression. To test our hypothesis, we cultured breast cancer cell lines MDA-MB-231 and SUM159 at low seeding density and measured percentage and absolute number of GD2+ cells daily. Flow cytometry analysis revealed that the percentage of GD2+ cells increased from 4.5 ± 2.5 on day 2 to 15 ± 3.8% on day 5 in MDA MB-231 cells and from 8.5 ± 2.8% on day2 to 28 ± 6.2% on day 5 in SUM159 cells (both designated as triple-negative breast cancer, TNBC). To investigate this phenomenon in-vivo, we injected GFP+ MDA-MB-231 cells in NSG mice mammary fat pads and examined GD2 expression in the implanted tumors weekly. Interestingly, we noticed that the percentage of GD2+ also increased from 12 ± 1.5% on week 1 to 30 ± 2.5% on week 6. Next, SUM159 cells were cultured in either nutrient rich (NR, i.e., 10% serum) or nutrient deprived (ND, 1% serum) for 4 days. We found that the percentage of GD2+ cells in NR medium at the end of 4 day culture was ~20% of the total cell population, whereas in ND medium was almost 50%. We then tested the effects of nutrient rich environment on GD2 expression by refreshing the media daily. Interestingly, cells that received fresh media had lower number of GD2+ cells (15 ± 1.5%) compared to cells cultured in the same medium for 4 days (33 ± 2.5%). Our data suggests that nutrient deprivation induces a stem cell phenotype in TNBC cells.
Next, we performed global metabolic profiling (i.e., for a total of 300 biochemical metabolites) using a mass spectroscopy-based approach. We profiled SUM159 cells cultured with NR vs. ND medium (set-1); GD2+ vs GD2- SUM159 cells (set -2); GD2+ vs GD2- MDA-MB-231 cell (set-3). Metabolites associated with amino acid metabolism, in particular glutathione metabolism, including glutamyl-alanine, 5-oxy-proline, proline, glutamine, and glutathione itself were found to be most highly up-regulated in GD2+ compared to GD2- cells and also in cells cultured in serum starved compared to serum rich conditions. Further analysis of these metabolites and their association with GD2+ cell signature raveled that gamma-glutamyl transferase (GGT5), was one of the most highly up-regulated (>150-fold) gene across all the groups. GGT is expressed on cell surface and transfers glutamyl group to amino acids, which then get transported across the membrane. In cancer, cells expressing GGT has been shown to be resistant to chemotherapeutic agents including cisplatin. Targeting glutathione metabolism could be future therapeutic strategy to inhibit BCSC growth in TNBC.
Citation Format: Battula VL, Piyaranthna B, Nguyen K, Sun JC, Jin F, Coarfa C, Nagireddy P, Andreeff M. Metabolic stress induces GD2 expression and cancer stem cell phenotype in triple negative breast cancer [abstract]. In: Proceedings of the 2016 San Antonio Breast Cancer Symposium; 2016 Dec 6-10; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2017;77(4 Suppl):Abstract nr P6-02-01.
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Affiliation(s)
- VL Battula
- The University of Texas MD Anderson Cancer Center, Houston, TX; Baylor College of Medicine, Houston, TX
| | - B Piyaranthna
- The University of Texas MD Anderson Cancer Center, Houston, TX; Baylor College of Medicine, Houston, TX
| | - K Nguyen
- The University of Texas MD Anderson Cancer Center, Houston, TX; Baylor College of Medicine, Houston, TX
| | - JC Sun
- The University of Texas MD Anderson Cancer Center, Houston, TX; Baylor College of Medicine, Houston, TX
| | - F Jin
- The University of Texas MD Anderson Cancer Center, Houston, TX; Baylor College of Medicine, Houston, TX
| | - C Coarfa
- The University of Texas MD Anderson Cancer Center, Houston, TX; Baylor College of Medicine, Houston, TX
| | - P Nagireddy
- The University of Texas MD Anderson Cancer Center, Houston, TX; Baylor College of Medicine, Houston, TX
| | - M Andreeff
- The University of Texas MD Anderson Cancer Center, Houston, TX; Baylor College of Medicine, Houston, TX
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Salazar Garcia M, Kwon S, Nguyen K, Sung N, Wu L, Skariah A, Dambaeva S, Gilman-Sachs A, Beaman K, Kwak-Kim J. Co-presence of increased antral follicle count and hyperandrogenism predicts the manifestation of immune inflammatory responses. Fertil Steril 2016. [DOI: 10.1016/j.fertnstert.2016.07.702] [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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Battula VL, Sun J, Nguyen K, Hortobagyi G, Andreeff M. Abstract P1-06-03: Epithelial to mesenchymal transition (EMT) regulates the spontaneous generation of GD2+ breast cancer stem-like cells through NFκB activation. Cancer Res 2016. [DOI: 10.1158/1538-7445.sabcs15-p1-06-03] [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: 11/16/2022]
Abstract
Abstract
Breast cancer recurrence may be a consequence of persistent breast cancer stem-like cells (BCSCs) that survive chemo- or hormonal therapy. Therefore, targeting BCSCs could complement standard chemotherapy. We discovered that the ganglioside GD2 is expressed on and defines BCSCs (Battula et al., JCI, 2012), as consequence of activation of the enzyme GD3 synthase (GD3S). Inhibition of GD3S expression inhibited breast cancer metastasis to lung. We also observed that GD2- breast cancer cells spontaneously generate GD2+ cells in vitro. As induction of EMT generates a stem cell–like phenotype, we hypothesized that EMT regulates the generation of GD2+ breast cancer cells. To test this hypothesis, MDA-MB-231and SUM159 cells were cultured in vitro and the percentage of GD2+ cells was measured over time. Interestingly, the percentage and absolute number of GD2+ cells increased in a time-dependent manner, suggesting the spontaneous generation of GD2+ cells. Concomitantly, mesenchymal-related markers including vimentin, N-cadherin, and twist increased 3 to 6 - fold. To further investigate whether this process is operational in vivo, GFP+ MDA-MB-231 cells were transplanted into mammary fat pads of NOD/SCID mice. Each week, a group of mice was sacrificed, tumors were extracted and the number of GFP+GD2+ cells was determined by flow cytometry. In line with our in vitro results, we observed significant increases in GD2+ BCSCs with increasing tumor volume from 15.1%±4.6% to 37%±8.7% over a 6 week period, suggesting that breast cancer cells spontaneously undergo EMT during tumor progression and generate GD2+ BCSCs.
To identify possible targets to inhibit EMT in breast cancer cells, proteomic analysis using Kinexus® antibody arrays revealed activation of NFκB and focal adhesion kinase (FAK) signaling in GD2+ breast cancer cells. The activation of NFκB (phospho p65) in GD2+ cells was validated by CyTOF mass cytometry using metal tagged antibodies. These data suggest that inhibition of NFκB signaling may inhibit GD2+ BCSC growth. Indeed, the IKK inhibitor BMS345541 reduced GD2+ cells by >95% and inhibited GD3S expression (determined by qRT-PCR) in a dose- and time-dependent fashion. In contrast, treatment with doxorubicin increased the percentage of GD2+ cells, from 13.5±2.5% to 21±2.6% in MDA-MB-231 cells, suggesting that GD2+ cells are resistant to doxorubicin. In addition, treatment with BMS345541 inhibited the ability of breast cancer cells to form mammospheres by >90% in vitro. In-vivo tumorigenesis assay demonstrated that BMS345541 induced a significant decrease (p <0.01) in tumor volume, and increased survival of tumor bearing mice: median survival was 78 days for BMS345541-treated mice vs. 58 days for controls (p<0.002).
Conclusion: GD2+ BCSCs are spontaneously produced during tumor progression by EMT and NFκB and FAK mediated signaling might regulate this process. Inhibition of NFκB and FAK signaling pathways may inhibit the spread of BCSCs and reduce breast cancer metastases.
Citation Format: Battula VL, Sun J, Nguyen K, Hortobagyi G, Andreeff M. Epithelial to mesenchymal transition (EMT) regulates the spontaneous generation of GD2+ breast cancer stem-like cells through NFκB activation. [abstract]. In: Proceedings of the Thirty-Eighth Annual CTRC-AACR San Antonio Breast Cancer Symposium: 2015 Dec 8-12; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2016;76(4 Suppl):Abstract nr P1-06-03.
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Affiliation(s)
- VL Battula
- UT MD Anderson Cancer Center, Houston, TX
| | - J Sun
- UT MD Anderson Cancer Center, Houston, TX
| | - K Nguyen
- UT MD Anderson Cancer Center, Houston, TX
| | | | - M Andreeff
- UT MD Anderson Cancer Center, Houston, TX
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Ahmed W, Harwood VJ, Nguyen K, Young S, Hamilton K, Toze S. Utility of Helicobacter spp. associated GFD markers for detecting avian fecal pollution in natural waters of two continents. Water Res 2016; 88:613-622. [PMID: 26562798 DOI: 10.1016/j.watres.2015.10.050] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Revised: 10/18/2015] [Accepted: 10/26/2015] [Indexed: 06/05/2023]
Abstract
Avian fecal droppings may negatively impact environmental water quality due to the presence of high concentrations of fecal indicator bacteria (FIB) and zoonotic pathogens. This study was aimed at evaluating the performance characteristics and utility of a Helicobacter spp. associated GFD marker by screening 265 fecal and wastewater samples from a range of avian and non-avian host groups from two continents (Brisbane, Australia and Florida, USA). The host-prevalence and -specificity of this marker among fecal and wastewater samples tested from Brisbane were 0.58 and 0.94 (maximum value of 1.00). These values for the Florida fecal samples were 0.30 (host-prevalence) and 1.00 (host-specificity). The concentrations of the GFD markers in avian and non-avian fecal nucleic acid samples were measured at a test concentration of 10 ng of nucleic acid at Brisbane and Florida laboratories using the quantitative PCR (qPCR) assay. The mean concentrations of the GFD marker in avian fecal nucleic acid samples (5.2 × 10(3) gene copies) were two orders of magnitude higher than non-avian fecal nucleic acid samples (8.6 × 10(1) gene copies). The utility of this marker was evaluated by testing water samples from the Brisbane River, Brisbane and a freshwater creek in Florida. Among the 18 water samples tested from the Brisbane River, 83% (n = 18) were positive for the GFD marker, and the concentrations ranged from 6.0 × 10(1)-3.2 × 10(2) gene copies per 100 mL water. In all, 92% (n = 25) water samples from the freshwater creek in Florida were also positive for the GFD marker with concentrations ranging from 2.8 × 10(1)-1.3 × 10(4) gene copies per 100 mL water. Based on the results, it can be concluded that the GFD marker is highly specific to avian host groups, and could be used as a reliable marker to detect the presence and amount of avian fecal pollution in environmental waters.
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Affiliation(s)
- W Ahmed
- CSIRO Land and Water, Ecosciences Precinct, 41 Boggo Road, Qld 4102, Australia; Faculty of Science, Health and Education, University of the Sunshine Coast, Maroochydore, DC, Qld 4558, Australia.
| | - V J Harwood
- Department of Integrative Biology, University of South Florida, 4202 East Fowler Avenue, SCA 110, Tampa, FL 33620, USA
| | - K Nguyen
- Department of Integrative Biology, University of South Florida, 4202 East Fowler Avenue, SCA 110, Tampa, FL 33620, USA
| | - S Young
- Department of Integrative Biology, University of South Florida, 4202 East Fowler Avenue, SCA 110, Tampa, FL 33620, USA
| | - K Hamilton
- CSIRO Land and Water, Ecosciences Precinct, 41 Boggo Road, Qld 4102, Australia; Department of Civil, Architectural, and Environmental Engineering, Drexel University, 3141 Chestnut Street, Philadelphia, PA 19104, USA
| | - S Toze
- CSIRO Land and Water, Ecosciences Precinct, 41 Boggo Road, Qld 4102, Australia; School of Population Health, University of Queensland, Herston Road, Qld 4006, Australia
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Zhang Y, Nguyen K, Tayabali A. Immunotoxicity of zinc oxide nanomaterials during single and repeated murine exposures. Toxicol Lett 2015. [DOI: 10.1016/j.toxlet.2015.08.623] [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: 11/24/2022]
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77
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Nguyen K, Pan C, Xia V, Hu J, Hu KQ. Clinical course of chronic hepatitis B (CHB) presented with normal ALT in Asian American patients. J Viral Hepat 2015; 22:809-16. [PMID: 25611883 DOI: 10.1111/jvh.12388] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2014] [Accepted: 12/09/2014] [Indexed: 01/21/2023]
Abstract
The clinical course for chronic hepatitis B (CHB) patients with normal ALT and with or without minimal histologic activity remains unclear. We assessed frequency, amplitude, disease activities, and associated factors of ALT and/or AST flares in this subpopulation. Forty-seven consecutive treatment naïve Asian patients with CHB were enrolled from two liver clinics between December 2003 and January 2013, who had normal baseline ALT by routine clinical biochemical testing performed 6 weeks before or after the liver biopsy. We defined a flare as elevation of ALT/AST above the upper limit of normal of ALT/AST. The mean follow-up was 37.6 (CI = 12, 88) months, and the mean age at entry into the study was 43.3 (CI = 19, 65); 22/47 (46.8%) were males; 15/45 (33.3%), HBeAg+; 68.1% had stage 0-1 fibrosis; 63.8% had grade 0-1 inflammation. During follow-up, 13/47 (27.7%) cases developed ALT flare at least once in a mean of 13.5 (CI = 2, 43) months after liver biopsy; ALT flare was not associated with baseline ALT level, fibrosis stage, inflammation grade, hepatitis B virus (HBV) DNA load, HBeAg status, HBV genotype, HBV precore and basal core promoter mutations. 11/13 (84/6%) of ALT flares resolved during follow-up. 13/13 (100%) of ALT flares met AASLD treatment criteria, but only 6/13 (46.2%) were on HBV treatment. Serum ALT and/or AST flares occur frequently in CHB carriers who initially presented with normal ALT during pretreatment period. Thus, regular follow-up is warranted despite status of ALT/AST. No clinical factors were found to be associated with ALT flares.
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Affiliation(s)
- K Nguyen
- Division of GI/Hepatology, School of Medicine, University of California, Irvine, Orange, CA, USA
| | - C Pan
- Division of Gastroenterology and Hepatology, NYU Langone Medical Center, NYU School of Medicine, NewYork, NY, USA
| | - V Xia
- Department of Anesthesiology, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - J Hu
- Division of Gastroenterology and Hepatology, NYU Langone Medical Center, NYU School of Medicine, NewYork, NY, USA
| | - K-Q Hu
- Division of GI/Hepatology, School of Medicine, University of California, Irvine, Orange, CA, USA
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Richards L, Elysha P, Partyka C, Nguyen K, Tayabali A. One-pot immunotoxicity – Dual cell system communication assays for in vitro assessment of inflammation. Toxicol Lett 2015. [DOI: 10.1016/j.toxlet.2015.08.538] [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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79
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Legler CR, Brown NR, Dunbar RA, Harness MD, Nguyen K, Oyewole O, Collier WB. Scaled Quantum Mechanical scale factors for vibrational calculations using alternate polarized and augmented basis sets with the B3LYP density functional calculation model. Spectrochim Acta A Mol Biomol Spectrosc 2015; 145:15-24. [PMID: 25766474 DOI: 10.1016/j.saa.2015.02.103] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Revised: 02/16/2015] [Accepted: 02/24/2015] [Indexed: 06/04/2023]
Abstract
The Scaled Quantum Mechanical (SQM) method of scaling calculated force constants to predict theoretically calculated vibrational frequencies is expanded to include a broad array of polarized and augmented basis sets based on the split valence 6-31G and 6-311G basis sets with the B3LYP density functional. Pulay's original choice of a single polarized 6-31G(d) basis coupled with a B3LYP functional remains the most computationally economical choice for scaled frequency calculations. But it can be improved upon with additional polarization functions and added diffuse functions for complex molecular systems. The new scale factors for the B3LYP density functional and the 6-31G, 6-31G(d), 6-31G(d,p), 6-31G+(d,p), 6-31G++(d,p), 6-311G, 6-311G(d), 6-311G(d,p), 6-311G+(d,p), 6-311G++(d,p), 6-311G(2d,p), 6-311G++(2d,p), 6-311G++(df,p) basis sets are shown. The double d polarized models did not perform as well and the source of the decreased accuracy was investigated. An alternate system of generating internal coordinates that uses the out-of plane wagging coordinate whenever it is possible; makes vibrational assignments via potential energy distributions more meaningful. Automated software to produce SQM scaled vibrational calculations from different molecular orbital packages is presented.
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Affiliation(s)
- C R Legler
- Department of Biology and Chemistry, Oral Roberts University, Tulsa, OK, USA
| | - N R Brown
- Department of Biology and Chemistry, Oral Roberts University, Tulsa, OK, USA
| | - R A Dunbar
- Department of Biology and Chemistry, Oral Roberts University, Tulsa, OK, USA
| | - M D Harness
- Department of Biology and Chemistry, Oral Roberts University, Tulsa, OK, USA
| | - K Nguyen
- Department of Biology and Chemistry, Oral Roberts University, Tulsa, OK, USA
| | - O Oyewole
- Department of Biology and Chemistry, Oral Roberts University, Tulsa, OK, USA
| | - W B Collier
- Department of Biology and Chemistry, Oral Roberts University, Tulsa, OK, USA.
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Sabelstrom H, Jandial R, Shchors K, Masic S, Ho A, Vandenberg S, Nicolaides TP, Nguyen K, Yakovenko S, Prados MD, James CD, Berger MS, Evan GI, Snyder EY, Weiss WA, Persson AI. HG-13 * SOX9 AS A DOWN-STREAM TARGET IN RAS/MEK-DRIVEN PEDIATRIC GLIOMA. Neuro Oncol 2015. [DOI: 10.1093/neuonc/nov061.50] [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: 11/14/2022] Open
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Feng W, Chu A, Wuu C, Nguyen K. SU-E-T-235: Data Mining for Evaluating Treatment Performances Over a Large Quantity of Data to Monitor and Improve SBRT Workflow. Med Phys 2015. [DOI: 10.1118/1.4924596] [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: 11/07/2022] Open
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Patel A, Bock M, Wollstein A, Nguyen K, Malerba S, Lytrivi I. Recipient-Donor Height Ratio and Outcomes in Pediatric Heart Transplantation. J Heart Lung Transplant 2015. [DOI: 10.1016/j.healun.2015.01.043] [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: 11/27/2022] Open
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83
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Ford T, Nguyen K, Pitney M, Friedman D, Lau A, Giles R, Allan R, Jepson N. Balloon aortic valvuloplasty: contemporary single centre experience in the TAVI era. Heart Lung Circ 2015. [DOI: 10.1016/j.hlc.2015.06.360] [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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Nguyen K, Cook L, Greenlee EP. Mortality reduction in patients with severe sepsis and septic shock through a comprehensive sepsis initiative. Crit Care 2014. [PMCID: PMC4273771 DOI: 10.1186/cc14031] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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85
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Sufian S, Arnez A, Labropoulos N, Nguyen K, Satwah V, Marquez J, Chowla A, Lakhanpal S. Radiofrequency ablation of the great saphenous vein, comparing one versus two treatment cycles for the proximal vein segment. Phlebology 2014; 30:724-8. [DOI: 10.1177/0268355514556142] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Objective To evaluate the results of radiofrequency ablation (RFA) of the great saphenous vein (GSV) using one versus two 20 s energy cycle treatment in the proximal 7 cm segment of the GSV. Methods All patients who underwent RFA of the GSV from 1 May 2013 to 30 September 2013 in eight of our vein centers were included. Duplex ultrasound scans (DUSs) were performed prior to treatment on all patients and 2–3 days, and 1 month after procedure. Demographic data, GSV diameters, and other relevant data were recorded. Clinical, Etiologic, Anatomic, Pathologic (CEAP) classification and Venous Clinical Severity Scores (VCSSs) were determined prior to ablation and one month later. Patients who developed endovenous heat induced thrombosis (EHIT) were followed till resolution. Results A total of 205 patients had one cycle treatment (group A) and 204 had two cycle treatment (group B). The two groups were comparable in their demography, CEAP classification, and VCSS scores. The rate of failure of ablation and incidence of EHIT were also not significantly different. The incidence of complications was low, <5% in both groups and all were minor. Conclusion Two cycle treatment of the proximal GSV for vein ablation does not improve the success rate of vein closure in the short term, compared to one cycle treatment. It also does not increase the risks of DVT, EHIT, major bleeding, and other complications. However, we do not know at what diameter two cycles may be superior to one cycle.
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Affiliation(s)
- S Sufian
- Center for Vein Restoration, Greenbelt, MD, USA
| | - A Arnez
- Center for Vein Restoration, Greenbelt, MD, USA
| | - N Labropoulos
- Center for Vein Restoration, Greenbelt, MD, USA
- Stony Brook School of Medicine, NY, USA
| | - K Nguyen
- Center for Vein Restoration, Greenbelt, MD, USA
| | - V Satwah
- Center for Vein Restoration, Greenbelt, MD, USA
| | - J Marquez
- Center for Vein Restoration, Greenbelt, MD, USA
| | - A Chowla
- Center for Vein Restoration, Greenbelt, MD, USA
| | - S Lakhanpal
- Center for Vein Restoration, Greenbelt, MD, USA
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86
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Nguyen K, Putoux A, Busa T, Cordier M, Sigaudy S, Till M, Chabrol B, Michel-Calemard L, Bernard R, Julia S, Malzac P, Labalme A, Missirian C, Edery P, Popovici C, Philip N, Sanlaville D. Incidental findings on array comparative genomic hybridization: detection of carrier females of dystrophinopathy without any family history. Clin Genet 2014; 87:488-91. [DOI: 10.1111/cge.12421] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2014] [Revised: 04/23/2014] [Accepted: 05/05/2014] [Indexed: 01/19/2023]
Affiliation(s)
- K. Nguyen
- Département de Génétique Médicale; Hôpital d'enfants de la Timone; Marseille France
| | - A. Putoux
- Service de Génétique; Hospices Civils de Lyon; Lyon France
- CNRL, INSERM U1028, CNRS UMR5292; Université Claude Bernard Lyon 1; Lyon France
| | - T. Busa
- Département de Génétique Médicale; Hôpital d'enfants de la Timone; Marseille France
| | - M.P. Cordier
- Service de Génétique; Hospices Civils de Lyon; Lyon France
| | - S. Sigaudy
- Département de Génétique Médicale; Hôpital d'enfants de la Timone; Marseille France
| | - M. Till
- Service de Génétique; Hospices Civils de Lyon; Lyon France
| | - B. Chabrol
- Service de Pédiatrie et Neuropédiatrie; Hôpital d'enfants de la Timone; Marseille France
| | - L. Michel-Calemard
- Service d'Endocrinologie Moléculaire et Maladies Rares; Hospices Civils de Lyon; Lyon France
| | - R. Bernard
- Département de Génétique Médicale; Hôpital d'enfants de la Timone; Marseille France
| | - S. Julia
- Service de Génétique; CHU de Toulouse; Toulouse France
| | - P. Malzac
- Département de Génétique Médicale; Hôpital d'enfants de la Timone; Marseille France
- UMR 7268 ADES; Aix-Marseille Université-EFS-CNRS; Marseille France
| | - A. Labalme
- Service de Génétique; Hospices Civils de Lyon; Lyon France
| | - C. Missirian
- Département de Génétique Médicale; Hôpital d'enfants de la Timone; Marseille France
| | - P. Edery
- Service de Génétique; Hospices Civils de Lyon; Lyon France
- CNRL, INSERM U1028, CNRS UMR5292; Université Claude Bernard Lyon 1; Lyon France
| | - C. Popovici
- Département de Génétique Médicale; Hôpital d'enfants de la Timone; Marseille France
| | - N. Philip
- Département de Génétique Médicale; Hôpital d'enfants de la Timone; Marseille France
| | - D. Sanlaville
- Service de Génétique; Hospices Civils de Lyon; Lyon France
- CNRL, INSERM U1028, CNRS UMR5292; Université Claude Bernard Lyon 1; Lyon France
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87
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Zhang Y, Feng Y, Ming X, Zhou L, Ahmad M, Nguyen K, Griffin M, Deng J. SU-E-T-221: Investigation of Lower Energy (< 6 MV) Photon Beams for Cancer Radiotherapy. Med Phys 2014. [DOI: 10.1118/1.4888551] [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: 11/07/2022] Open
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88
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Bock M, Nguyen K, Malerba S, Harrison K, Bagiella E, Gelb B, Pinney S, Lytrivi I. Pediatric Cardiac Re-transplantation: Waitlist Mortality Stratified by Age and Era. J Heart Lung Transplant 2014. [DOI: 10.1016/j.healun.2014.01.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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89
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Marelli C, Salih MM, Nguyen K, Mallaret M, Drouot N, Labauge P, Koenig M. Paraparésie spastique héréditaire à phénotype complexe avec mutation dans le gène FA2H : description de 5 cas. Rev Neurol (Paris) 2014. [DOI: 10.1016/j.neurol.2014.01.405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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90
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Lecocq C, Nguyen K, Azulay JP, Dürr A, Pandolfo M, Tranchant C, Anheim M. Description et comparaison du phénotype des Friedreich typiques, de début tardif, et de début très tardif. Rev Neurol (Paris) 2014. [DOI: 10.1016/j.neurol.2014.01.397] [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: 11/29/2022]
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91
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Startz T, Nguyen K, Peters R, Nankervis B, Jones M, Kilian R, Frank N, Vang B, Hill D. Maturation of dendritic cells from CD14+ monocytes in an automated functionally closed hollow fiber bioreactor system. Cytotherapy 2014. [DOI: 10.1016/j.jcyt.2014.01.093] [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: 10/25/2022]
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92
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Salort-Campana E, Nguyen K, Lévy N, Pouget J, Attarian S. Diagnostic clinique et moléculaire de la myopathie facioscapulo-humérale de type 1 (FSHD1) en 2012. Rev Neurol (Paris) 2013; 169:573-82. [DOI: 10.1016/j.neurol.2013.07.001] [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] [Received: 03/07/2013] [Revised: 07/10/2013] [Accepted: 07/15/2013] [Indexed: 01/20/2023]
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93
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Court L, Yang J, Fullen D, Han N, Ko J, Mason S, Nguyen K, Stein S, Fave X, Hsieh M, Kuruvila S, Hillebrandt E, Palmer J, Beadle B, Dabaja B, Skinner H, Ibbott G, Balter P. SU-E-T-359: Patients Could (and Should) Be Treated in An Upright Position. Med Phys 2013. [DOI: 10.1118/1.4814793] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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94
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Lecocq C, Nguyen K, Azulay JP, Durr A, Pandolfo M, Tranchant C, Anheim M. Le phénotype atypique des maladies de Friedreich de début tardif et très tardif. Rev Neurol (Paris) 2013. [DOI: 10.1016/j.neurol.2013.01.036] [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: 10/27/2022]
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95
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Vutien P, Trinh HN, Nguyen K, Garcia RT, Nguyen HA, Levitt BS, Nguyen L, Ha NB, Ahmed A, Daugherty T, Garcia G, Nguyen MH. Precore and basal core promoter mutations in Asian American patients with hepatitis B e antigen-positive chronic hepatitis B. Aliment Pharmacol Ther 2013; 37:464-72. [PMID: 23278246 DOI: 10.1111/apt.12193] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2012] [Revised: 10/19/2012] [Accepted: 12/05/2012] [Indexed: 01/04/2023]
Abstract
BACKGROUND Prior studies have shown that precore mutations abolish and basal core promoter (BCP) mutations down-regulate hepatitis B e antigen (HBeAg) production. Thus, the presence of precore and BCP mutations in HBeAg-positive patients indicates an infection with a mixed viral population of wild-type and precore and/or BCP mutant hepatitis B virus (HBV). To date, there has been limited study of the prevalence and clinical significance of precore and BCP mutations in patients with HBeAg-positive chronic hepatitis B. AIM To determine the prevalence, predictors and clinical characteristics of mixed wild-type and precore/BCP HBV infection, through a cross-sectional study, in a US cohort of patients with chronic hepatitis B. METHODS We conducted a retrospective study of 828 chronic hepatitis B patients with HBV genotype and mutation panel testing seen at three US gastroenterology and liver clinics from June 2005 to September 2009. RESULTS A majority of our patients (92.3%) were either Vietnamese or Chinese American. In the HBeAg-positive cohort, 17% of patients had precore mutations only, 28% had BCP mutations only and 5% had both BCP and precore mutations. On multivariate analyses, HBV genotype C, increasing age, lower HBV DNA level and an ALT quotient >2 were independent predictors for the presence of precore and/or BCP mutations. CONCLUSIONS The current distinction and management recommendations for HBeAg-positive vs. HBeAg-negative patients with chronic hepatitis B should be reassessed. Additional biomarkers and treatment endpoints should be studied for their usefulness in predicting continued viral suppression after treatment discontinuation.
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Affiliation(s)
- P Vutien
- Case Western Reserve University School of Medicine, Cleveland, OH, USA
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96
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Han C, Nguyen K, Schultheiss T, Wong J. SU-E-T-254: Quantitative Evaluation of Three Mathematical Models for Radiation-Induced Secondary Cancer Risk for Lung in Stereotactic Body Radiotherapy. Med Phys 2012; 39:3762. [PMID: 28517305 DOI: 10.1118/1.4735321] [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: 11/07/2022] Open
Abstract
PURPOSE Several mathematical models exist to predict secondary cancer risks from radiotherapy treatment. In this study, we aimed to compare three dosimetry-based models in the application of stereotactic body radiotherapy (SBRT) of early-stage non-small cell lung cancer (NSCLC) with three radiotherapy treatment modalities. METHODS Ten patients who received definitive SBRT for early-stage NSCLC were retrospectively selected. for each patient, a helical tomotherapy (HT) plan, a three-dimensional conformal radiotherapy (3D-CRT) plan, and a volumetric modulated arc therapy (VMAT) plan were generated to deliver 50 Gy to the planning target volume in five fractions. The excess absolute risk (EAR) for secondary lung cancer occurrence was calculated using three risk models: the linear-exponential model, the plateau model, and the linear model. The sensitivity of the EAR to the prescription dose was evaluated by varying the prescription dose in the range of 40 to 60 Gy. RESULTS Based on the linear-exponential model, the average EAR's (in occurrences per 10,000 patients per year) were 8.4+/-2.7, 8.3+/-2.1, and 8.4+/-1.9 for the HT plans, 3D-CRT plans, and VMAT plans respectively with 40 Gy prescription dose, and 9.4+/-2.5, 9.0+/-2.1, and 9.3+/-1.8 with 60 Gy. Based on the plateau model, the average EAR's were 10.7+/-3.9, 10.6+/-3.0, and 10.9+/-2.8 with 40 Gy, and 12.9+/-4.2, 12.6+/-3.4, 12.9+/-3.1 with 60 Gy. Based on the linear model, the average EAR's were 29.1+/-13.4, 29.4+/-11.4, and 30.0+/-11.1 with 40 Gy, and 43.8+/-20.1, 44.0+/-11.0, 45.1+/-16.6 with 60 Gy. The difference in EAR's were not statistically significant among the HT, 3D-CRT, and VMAT plans. CONCLUSIONS Three secondary cancer risk models, as well as three SBRT treatment modalities, were compared. There was no significant difference in secondary lung cancer risks among the three treatment modalities in this study.
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Affiliation(s)
- C Han
- City of Hope Medical Center, Duarte, CA
| | - K Nguyen
- City of Hope Medical Center, Duarte, CA
| | | | - J Wong
- City of Hope Medical Center, Duarte, CA
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97
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Ahmad M, Liu W, Deng J, Nguyen K, Wu D, Chen Z, Moran M, Nath R. SU-E-T-289: On the Use of a Diode Array for the Commissioning of Dynamically-Wedged Asymmetric Fields Generated by Varian EDW's in the Pinnacle Treatment Planning System. Med Phys 2012; 39:3770. [DOI: 10.1118/1.4735357] [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: 11/07/2022] Open
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98
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Chang A, Nguyen K, Rogers B, Laforest R, Anderson C. PD-0532 64CU-RADIOLABELED OCTREOTATE AS A THERANOSTIC AGENT FOR CANCER: ROLE OF P53 IN THE THERAPEUTIC RESPONSE. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)70871-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: 10/28/2022]
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99
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Arnez A, Kiser R, Lakhanpal S, Nguyen K. Letter regarding: F Pannier, E Rabe, J Rits, A Kadiss, U Maurins. Endovenous laser ablation of great saphenous veins using a 1470 nm diode laser and the radial fibre - follow-up after six months. Phlebology 2011;26:35-9. Phlebology 2012; 27:101; author reply 102. [PMID: 22332146 DOI: 10.1258/phleb.2011.011017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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100
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Chabot M, Martinet G, Béroff K, Pino T, Bouneau S, Genolini B, Grave X, Nguyen K, le Gailliard C, Rosier P, Féraud G, Friha H, Villier B. Detection of atomic and molecular mega-electron-volt projectiles using an x-ray charged coupled device camera. Rev Sci Instrum 2011; 82:103301. [PMID: 22047285 DOI: 10.1063/1.3640411] [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] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We show that an x-ray charge coupled device (CCD) may be used as a particle detector for atomic and molecular mega-electron-volt (MeV) projectiles of around a few hundred keV per atomic mass unit. For atomic species, spectroscopic properties in kinetic energy measurements (i.e., linearity and energy resolution) are found to be close to those currently obtained with implanted or surface barrier silicon particle detectors. For molecular species, in order to increase the maximum kinetic energy detection limit, we propose to put a thin foil in front of the CCD. This foil breaks up the molecules into atoms and spreads the charges over many CCD pixels and therefore avoiding saturation effects. This opens new perspectives in high velocity molecular dissociation studies with accelerator facilities.
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Affiliation(s)
- M Chabot
- Institut de Physique Nucléaire d'Orsay, IN2P3-CNRS, Université Paris Sud, 91406 Orsay cedex, France
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