1
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Tabone O, Verma R, Singhania A, Chakravarty P, Branchett WJ, Graham CM, Lee J, Trang T, Reynier F, Leissner P, Kaiser K, Rodrigue M, Woltmann G, Haldar P, O'Garra A. Blood transcriptomics reveal the evolution and resolution of the immune response in tuberculosis. J Exp Med 2021; 218:212624. [PMID: 34491266 PMCID: PMC8493863 DOI: 10.1084/jem.20210915] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [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] [Received: 04/28/2021] [Revised: 07/08/2021] [Accepted: 08/05/2021] [Indexed: 12/02/2022] Open
Abstract
Blood transcriptomics have revealed major characteristics of the immune response in active TB, but the signature early after infection is unknown. In a unique clinically and temporally well-defined cohort of household contacts of active TB patients that progressed to TB, we define minimal changes in gene expression in incipient TB increasing in subclinical and clinical TB. While increasing with time, changes in gene expression were highest at 30 d before diagnosis, with heterogeneity in the response in household TB contacts and in a published cohort of TB progressors as they progressed to TB, at a bulk cohort level and in individual progressors. Blood signatures from patients before and during anti-TB treatment robustly monitored the treatment response distinguishing early and late responders. Blood transcriptomics thus reveal the evolution and resolution of the immune response in TB, which may help in clinical management of the disease.
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Affiliation(s)
- Olivier Tabone
- Laboratory of Immunoregulation and Infection, The Francis Crick Institute, London, UK
| | - Raman Verma
- Department of Respiratory Sciences, National Institute for Health Research Respiratory Biomedical Research Centre, University of Leicester, UK
| | - Akul Singhania
- Laboratory of Immunoregulation and Infection, The Francis Crick Institute, London, UK
| | | | - William J Branchett
- Laboratory of Immunoregulation and Infection, The Francis Crick Institute, London, UK
| | - Christine M Graham
- Laboratory of Immunoregulation and Infection, The Francis Crick Institute, London, UK
| | - Jo Lee
- Department of Respiratory Sciences, National Institute for Health Research Respiratory Biomedical Research Centre, University of Leicester, UK
| | - Tran Trang
- Bioaster Microbiology Technology Institute, Lyon, France
| | | | | | - Karine Kaiser
- Medical Diagnostic Discovery Department, bioMérieux SA, Marcy l'Etoile, France
| | - Marc Rodrigue
- Global Medical Affairs, bioMérieux SA, Marcy l'Etoile, France
| | - Gerrit Woltmann
- Department of Respiratory Sciences, National Institute for Health Research Respiratory Biomedical Research Centre, University of Leicester, UK
| | - Pranabashis Haldar
- Department of Respiratory Sciences, National Institute for Health Research Respiratory Biomedical Research Centre, University of Leicester, UK
| | - Anne O'Garra
- Laboratory of Immunoregulation and Infection, The Francis Crick Institute, London, UK.,National Heart and Lung Institute, Imperial College London, London, UK
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2
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Mann G, Cafer A, Kaiser K, Gordon K. Community resilience in a rural food system: documenting pathways to nutrition solutions. Public Health 2020; 186:157-163. [PMID: 32836005 DOI: 10.1016/j.puhe.2020.06.041] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 09/11/2019] [Revised: 04/09/2020] [Accepted: 06/19/2020] [Indexed: 01/08/2023]
Abstract
OBJECTIVE To describe and determine the barriers and facilitators to food-related health behaviors of residents in a rural Mississippi Delta community. STUDY DESIGN Descriptive study of qualitative interviews. METHODS A non-random sample of 34 low-income, food-insecure adults residing in a rural Mississippi Delta community were interviewed using fuzzy cognitive mapping, a mixed methods approach. RESULTS Participants strongly emphasized the time restraints they faced in both procuring and preparing foods, due to substantial travel time required to procure groceries. Participants also identified key facilitators to healthy eating behaviors, including seasonal produce stands, foraging, fishing, home provisioning, and access to the local food pantry. These barriers and facilitators are highly interconnected with other influential factors including poverty, lack of health care, unemployment, and faith-based support systems. CONCLUSIONS While the connection between low food access and poor eating habits is well researched, this novel mixed-method approach details two important elements missing from the literature: (1) other factors often overlooked that mitigate or exacerbate this relationship and (2) the dynamic nature of the relationships between these factors, poor eating habits, and health. Additionally, this research examines these relationships in an underrepresented rural minority population where resources needed to mitigate poor health are often much more limited. Findings from this study are critical to health and food policy in Mississippi and more generally, rural communities.
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Affiliation(s)
- G Mann
- Department of Nutrition and Hospitality Management, University of Mississippi, University, 220 Lenoir Hall, Sorority Row, P.O. Box 1848, MS, 38677, USA.
| | - A Cafer
- Department of Sociology & Anthropology, University of Mississippi, University, 543 Lamar Hall, P.O. Box 1848, MS, 38677, USA.
| | - K Kaiser
- Department of Criminal Justice and Legal Studies, University of Mississippi, University, M302 Mayes Hall, P.O. Box 1848, MS, 38677, USA.
| | - K Gordon
- Department of Nutrition and Hospitality Management, University of Mississippi, University, 108 Lenoir Hall, Sorority Row, P.O. Box 1848, MS, 38677, USA.
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3
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Valdivia MP, Stutman D, Stoeckl C, Mileham C, Zou J, Muller S, Kaiser K, Sorce C, Keiter PA, Fein JR, Trantham M, Drake RP, Regan SP. Implementation of a Talbot-Lau x-ray deflectometer diagnostic platform for the OMEGA EP laser. Rev Sci Instrum 2020; 91:023511. [PMID: 32113451 DOI: 10.1063/1.5123919] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Accepted: 01/30/2020] [Indexed: 06/10/2023]
Abstract
A Talbot-Lau X-ray Deflectometer (TXD) was implemented in the OMEGA EP laser facility to characterize the evolution of an irradiated foil ablation front by mapping electron densities >1022 cm-3 by means of Moiré deflectometry. The experiment used a short-pulse laser (30-100 J, 10 ps) and a foil copper target as an x-ray backlighter source. In the first experimental tests performed to benchmark the diagnostic platform, grating survival was demonstrated and x-ray backlighter laser parameters that deliver Moiré images were described. The necessary modifications to accurately probe the ablation front through TXD using the EP-TXD diagnostic platform are discussed.
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Affiliation(s)
- M P Valdivia
- Department of Physics and Astronomy, Johns Hopkins University, Baltimore, Maryland 21218, USA
| | - D Stutman
- Department of Physics and Astronomy, Johns Hopkins University, Baltimore, Maryland 21218, USA
| | - C Stoeckl
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - C Mileham
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - J Zou
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - S Muller
- General Atomics, Inertial Fusion Technology, San Diego, California 92121, USA
| | - K Kaiser
- Microworks GmbH, 76137 Karlsruhe, Germany
| | - C Sorce
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - P A Keiter
- Los Alamos National Laboratory, Los Alamos, New Mexico 87544, USA
| | - J R Fein
- Sandia National Laboratories, Albuquerque, New Mexico 87123, USA
| | - M Trantham
- Climate and Space Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - R P Drake
- Climate and Space Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - S P Regan
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
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Singhania A, Verma R, Graham CM, Lee J, Tran T, Richardson M, Lecine P, Leissner P, Berry MPR, Wilkinson RJ, Kaiser K, Rodrigue M, Woltmann G, Haldar P, O'Garra A. A modular transcriptional signature identifies phenotypic heterogeneity of human tuberculosis infection. Nat Commun 2018; 9:2308. [PMID: 29921861 PMCID: PMC6008327 DOI: 10.1038/s41467-018-04579-w] [Citation(s) in RCA: 111] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Accepted: 05/01/2018] [Indexed: 11/08/2022] Open
Abstract
Whole blood transcriptional signatures distinguishing active tuberculosis patients from asymptomatic latently infected individuals exist. Consensus has not been achieved regarding the optimal reduced gene sets as diagnostic biomarkers that also achieve discrimination from other diseases. Here we show a blood transcriptional signature of active tuberculosis using RNA-Seq, confirming microarray results, that discriminates active tuberculosis from latently infected and healthy individuals, validating this signature in an independent cohort. Using an advanced modular approach, we utilise the information from the entire transcriptome, which includes overabundance of type I interferon-inducible genes and underabundance of IFNG and TBX21, to develop a signature that discriminates active tuberculosis patients from latently infected individuals or those with acute viral and bacterial infections. We suggest that methods targeting gene selection across multiple discriminant modules can improve the development of diagnostic biomarkers with improved performance. Finally, utilising the modular approach, we demonstrate dynamic heterogeneity in a longitudinal study of recent tuberculosis contacts.
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Affiliation(s)
- Akul Singhania
- Laboratory of Immunoregulation and Infection, The Francis Crick Institute, London, NW1 1AT, UK
| | - Raman Verma
- Respiratory Biomedical Research Centre, Institute for Lung Health, Department of Infection, Immunity and Inflammation, University of Leicester, Leicester, LE3 9QP, UK
| | - Christine M Graham
- Laboratory of Immunoregulation and Infection, The Francis Crick Institute, London, NW1 1AT, UK
| | - Jo Lee
- Respiratory Biomedical Research Centre, Institute for Lung Health, Department of Infection, Immunity and Inflammation, University of Leicester, Leicester, LE3 9QP, UK
| | - Trang Tran
- BIOASTER Microbiology Technology Institute, Lyon, 69007, France
| | - Matthew Richardson
- Respiratory Biomedical Research Centre, Institute for Lung Health, Department of Infection, Immunity and Inflammation, University of Leicester, Leicester, LE3 9QP, UK
| | - Patrick Lecine
- BIOASTER Microbiology Technology Institute, Lyon, 69007, France
| | | | - Matthew P R Berry
- Department of Respiratory Medicine, Imperial College Healthcare NHS Trust, St Mary's Hospital, London, W2 1PG, UK
| | - Robert J Wilkinson
- Wellcome Centre for Infectious Diseases Research, Africa, Institute for Infectious Diseases and Molecular Medicine, University of Cape Town, Observatory 7925, Cape Town, South Africa
- Department of Medicine, Imperial College London, London, W2 1PG, UK
- Tuberculosis Laboratory, The Francis Crick Institute, London, NW1 1AT, UK
| | - Karine Kaiser
- Medical Diagnostic Discovery Department, bioMérieux SA, Marcy l'Etoile, 69280, France
| | - Marc Rodrigue
- Medical Diagnostic Discovery Department, bioMérieux SA, Marcy l'Etoile, 69280, France
| | - Gerrit Woltmann
- Respiratory Biomedical Research Centre, Institute for Lung Health, Department of Infection, Immunity and Inflammation, University of Leicester, Leicester, LE3 9QP, UK
| | - Pranabashis Haldar
- Respiratory Biomedical Research Centre, Institute for Lung Health, Department of Infection, Immunity and Inflammation, University of Leicester, Leicester, LE3 9QP, UK
| | - Anne O'Garra
- Laboratory of Immunoregulation and Infection, The Francis Crick Institute, London, NW1 1AT, UK.
- National Heart and Lung Institute, Imperial College London, London, W2 1PG, UK.
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Vachot-Ganée L, Khim N, Iannello A, Legrand E, Kim S, Eam R, Khean C, Ken M, Ashley E, Tun KM, Dhorda M, Nosten F, Souleymane IM, Blein S, Pachot A, Ariey F, Kaiser K, Ménard D. A novel field-based molecular assay to detect validated artemisinin-resistant k13 mutants. Malar J 2018; 17:175. [PMID: 29690890 PMCID: PMC5916714 DOI: 10.1186/s12936-018-2329-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Accepted: 04/18/2018] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Given the risk of artemisinin resistance spreading from the Greater Mekong sub-region, prospective monitoring in sub-Saharan Africa should be expedited. Molecular biology techniques used for monitoring rely on the detection of k13 validated mutants by using PCR and Sanger sequencing approach, usually not available in malaria endemic areas. METHODS A semi-automated workflow based on the easyMAG® platform and the Argene Solution® (bioMérieux, Marcy l'Etoile, France) as a field-based surveillance tool operable at national level was developed in four steps. Clinical and analytical performances of this tool detecting five of the most frequent and validated k13 mutants (Y493H, I543T, R539T, F446I and C580Y) from dried blood spots (DBS) were compared to the gold standard approach (PCR and Sanger sequencing). RESULTS By using the ARMS (amplification-refractory mutation system) strategy, the best multiplexing options were found in 3 separate real-time PCR duplexes (IC as internal control/I543T, C580Y/Y493H and F446I/R539T) with limits of detection ranging from 50 (C580Y) to 6.25 parasites/µL (Y493H). In field conditions, using 642 clinical DBS (from symptomatic patients and asymptomatic individuals) collected from Cambodia, Myanmar and Africa (Chad), the overall sensitivity and specificity of the K13 bMx prototype assay developed by bioMérieux were ≥ 90%. Areas under the ROC curves were estimated to be > 0.90 for all k13 mutants in samples from symptomatic patients. CONCLUSION The K13 ready-to-use bMx prototype assay, considered by the end-users as a user-friendly assay to perform (in shorter time than the K13 reference assay) and easy to interpret, was found to require less budget planning and had fewer logistical constraints. Its excellent performance qualifies the prototype as a reliable screening tool usable in malaria endemic countries recognized to be at risk of emergence or spread of validated k13 mutants. Additional multi-site studies are needed to evaluate the performances of the K13 bMx prototype assay in different epidemiological contexts such as Africa, India, or South America.
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Affiliation(s)
- Laurence Vachot-Ganée
- Medical Diagnostic Discovery Department (MD3), bioMérieux, Grenoble and Marcy l'Etoile, France
| | - Nimol Khim
- Malaria Molecular Epidemiology Unit, Institute Pasteur in Cambodia, Phnom Penh, Cambodia
| | - Alexandra Iannello
- Medical Diagnostic Discovery Department (MD3), bioMérieux, Grenoble and Marcy l'Etoile, France
| | - Eric Legrand
- Genetics and Genomics of Insect Vectors Unit, Institute Pasteur, Paris, France
- Malaria Genetics and Resistance Group, Biology of Host-Parasite Interactions Unit, Institute Pasteur, Paris, France
| | - Saorin Kim
- Malaria Molecular Epidemiology Unit, Institute Pasteur in Cambodia, Phnom Penh, Cambodia
| | - Rotha Eam
- Malaria Molecular Epidemiology Unit, Institute Pasteur in Cambodia, Phnom Penh, Cambodia
| | - Chanra Khean
- Malaria Molecular Epidemiology Unit, Institute Pasteur in Cambodia, Phnom Penh, Cambodia
| | - Malen Ken
- Malaria Molecular Epidemiology Unit, Institute Pasteur in Cambodia, Phnom Penh, Cambodia
| | - Elizabeth Ashley
- Mahidol-Oxford Tropical Medicine Research Unit, Bangkok, Thailand
| | - Kyaw Myo Tun
- Department of Preventive & Social Medicine, Defence Services Medical Academy, Yangon, Myanmar
- Myanmar Oxford Clinical Research Unit, Yangon, Myanmar
| | - Mehul Dhorda
- Mahidol-Oxford Tropical Medicine Research Unit, Bangkok, Thailand
- Worldwide Antimalarial Resistance Network, Asia Regional Centre, Bangkok, Thailand
| | - François Nosten
- Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine Research Building, University of Oxford, Old Road Campus, Oxford, UK
- Shoklo Malaria Research Unit, Mahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Mae Sot, Thailand
| | | | - Sophie Blein
- Medical Diagnostic Discovery Department (MD3), bioMérieux, Grenoble and Marcy l'Etoile, France
| | - Alexandre Pachot
- Medical Diagnostic Discovery Department (MD3), bioMérieux, Grenoble and Marcy l'Etoile, France
| | - Frédéric Ariey
- Institute Cochin Inserm U1016, Université Paris-Descartes, Sorbonne Paris Cité, Paris, France
- Laboratoire de Parasitologie-Mycologie, Hôpital Cochin, Paris, France
| | - Karine Kaiser
- Medical Diagnostic Discovery Department (MD3), bioMérieux, Grenoble and Marcy l'Etoile, France
| | - Didier Ménard
- Malaria Molecular Epidemiology Unit, Institute Pasteur in Cambodia, Phnom Penh, Cambodia.
- Malaria Genetics and Resistance Group, Biology of Host-Parasite Interactions Unit, Institute Pasteur, Paris, France.
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6
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Kruser T, Kruser J, Gross J, Moran M, Kaiser K, Szmuilowicz E, Kircher S. EP-1651: Radiation oncologists’ role in end-of-life care: a view from medical oncologists. Radiother Oncol 2018. [DOI: 10.1016/s0167-8140(18)31960-1] [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: 10/14/2022]
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7
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Kaiser K, Schorling E, Gumbert L, Lauerer M, Nagel E. Gesundheitsversorgung von Asylsuchenden nach dem Asylbewerberleistungsgesetz: Wahrnehmung und Präferenzen der Bevölkerung. Das Gesundheitswesen 2017. [DOI: 10.1055/s-0037-1605644] [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: 10/18/2022]
Affiliation(s)
- K Kaiser
- Universität Bayreuth, Institut für Medizinmanagement und Gesundheitswissenschaften, Bayreuth
| | - E Schorling
- Universität Bayreuth, Institut für Medizinmanagement und Gesundheitswissenschaften, Bayreuth
| | - L Gumbert
- Universität Bayreuth, Institut für Medizinmanagement und Gesundheitswissenschaften, Bayreuth
| | - M Lauerer
- Universität Bayreuth, Institut für Medizinmanagement und Gesundheitswissenschaften, Bayreuth
| | - E Nagel
- Universität Bayreuth, Institut für Medizinmanagement und Gesundheitswissenschaften, Bayreuth
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8
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Hillbrand M, Landry G, Dedes G, Pappas E, Kalaitzakis G, Kurz C, Dörringer F, Kaiser K, Würl M, Englbrecht F, Dietrich O, Makris D, Pappas E, Parodi K. PO-0809: A 3D polymer gel dosimeter coupled to a patient-specific anthropomorphic phantom for proton therapy. Radiother Oncol 2017. [DOI: 10.1016/s0167-8140(17)31246-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: 10/19/2022]
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9
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Karavites LC, Allu S, Khan SA, Kaiser K. Abstract P6-12-13: Awareness and acceptability of skin application of preventive medications for breast cancer. Cancer Res 2016. [DOI: 10.1158/1538-7445.sabcs15-p6-12-13] [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
OBJECTIVE: To better understand women's knowledge and perceptions of breast cancer prevention medications and determine if a topical administration of these medications would increase acceptability.
METHODS: Focus groups were conducted with healthy women identified through the breast center of a single institution. An experienced moderator led participants through a discussion of breast cancer risk perceptions, knowledge of and concerns about risk reduction medications, and their views of a skin application of risk reducing medication. Participants provided sociodemographic information, breast cancer risk factors, and prior physician recommendations to take risk-reducing medicines. Trained research personnel examined all qualitative results systematically. Participants' breast cancer risk was estimated using the Gail Model.
RESULTS: Four focus groups (N=32) were conducted. Most participants had at least a college degree (78.2%) and were of either European (50%) or African ancestry (31%). The majority (72%) were at elevated risk for breast cancer, just over half of these women perceived themselves to be at higher than average risk. Only 19% of participants had prior knowledge of preventive medications. Women who perceived themselves to be at high risk were more likely to know about preventive medications than those who did not, 38% vs 0% respectively. Over 90% of the focus group participants stated that they would prefer a topical application of a preventive medication to a pill if their physician advised them to take preventive medication.
CONCLUSION: Awareness of preventive medications was low even in a highly educated sample of high-risk women. If given a choice in the route of administration of chemoprevention, nine out of ten women preferred a gel to a pill. Future work should focus on demonstrating a reduction in side effects of topical over oral medications and raising awareness of chemopreventive options for breast cancer to increase acceptance of preventive medications.
Citation Format: Karavites LC, Allu S, Khan SA, Kaiser K. Awareness and acceptability of skin application of preventive medications for breast cancer. [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 P6-12-13.
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Affiliation(s)
- LC Karavites
- University of Illinois College of Medicine at Mt. Sinai Hospital, Chicago, IL; Northwestern University Feinberg School of Medicine, Chicago, IL
| | - S Allu
- University of Illinois College of Medicine at Mt. Sinai Hospital, Chicago, IL; Northwestern University Feinberg School of Medicine, Chicago, IL
| | - SA Khan
- University of Illinois College of Medicine at Mt. Sinai Hospital, Chicago, IL; Northwestern University Feinberg School of Medicine, Chicago, IL
| | - K Kaiser
- University of Illinois College of Medicine at Mt. Sinai Hospital, Chicago, IL; Northwestern University Feinberg School of Medicine, Chicago, IL
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10
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Kaiser K, Nagels K. Krebs in Afrika – Der Zusammenhang zwischen epidemiologischen Kennzahlen und ökonomischen Indikatoren. Gesundheitswesen 2015. [DOI: 10.1055/s-0035-1563308] [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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11
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Schorling E, Schreiber-Katz O, Kaiser K, Thiele S, Klug C, Reilich P, Walter MC, Nagels K. Subjektives Erkrankungsempfinden bei Charcot-Marie-Tooth (CMT)-Neuropathien: Ergebnisse einer qualitativen Vorstudie. Gesundheitswesen 2015. [DOI: 10.1055/s-0035-1563300] [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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12
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Yount S, Beaumont J, Kaiser K, Wortman K, Chen SY, Van Brunt D, Cella D. Health-Related Quality of Life (HRQOL) in Patients With Idiopathic Pulmonary Fibrosis. Value Health 2014; 17:A601. [PMID: 27202075 DOI: 10.1016/j.jval.2014.08.2082] [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] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Affiliation(s)
- S Yount
- Northwestern University, Chicago, IL, USA
| | - J Beaumont
- Northwestern University, Chicago, IL, USA
| | - K Kaiser
- Northwestern University, Chicago, IL, USA
| | - K Wortman
- Northwestern University, Chicago, IL, USA
| | | | | | - D Cella
- Northwestern University, Chicago, IL, USA
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13
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Hieber W, Kaiser K. Notizen: Über Eisendicarbonyl-Derivate mit Diphenyldichalkogenen und mit Tetraphenyldiphosphin. Zeitschrift für Naturforschung B 2014. [DOI: 10.1515/znb-1969-0626] [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] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- W. Hieber
- Anorganisch-Chemisches Laboratorium der TH München
| | - K. Kaiser
- Anorganisch-Chemisches Laboratorium der TH München
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14
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Landa M, Cottrell MT, Kirchman DL, Kaiser K, Medeiros PM, Tremblay L, Batailler N, Caparros J, Catala P, Escoubeyrou K, Oriol L, Blain S, Obernosterer I. Phylogenetic and structural response of heterotrophic bacteria to dissolved organic matter of different chemical composition in a continuous culture study. Environ Microbiol 2013; 16:1668-81. [DOI: 10.1111/1462-2920.12242] [Citation(s) in RCA: 91] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2013] [Accepted: 08/03/2013] [Indexed: 12/01/2022]
Affiliation(s)
- M. Landa
- UPMC University Paris 06, UMR 7621, LOMIC,UMS 2348, Observatoire Océanologique; Banyuls/mer F-66650 France
- CNRS; UMR 7621, LOMIC, Observatoire Océanologique; Banyuls/mer F-66650 France
| | - M. T. Cottrell
- School of Marine Science and Policy; University of Delaware; Lewes DE 19958 USA
| | - D. L. Kirchman
- School of Marine Science and Policy; University of Delaware; Lewes DE 19958 USA
| | - K. Kaiser
- Department of Marine Sciences and Oceanography; Texas A&M University at Galveston; Galveston TX 77554 USA
| | - P. M. Medeiros
- Department of Marine Sciences; University of Georgia; Athens GA 30602 USA
| | - L. Tremblay
- Department of Chemistry and Biochemistry; Université de Moncton; Moncton New Brunswick Canada E1A 3E9
| | - N. Batailler
- UPMC University Paris 06, UMR 7621, LOMIC,UMS 2348, Observatoire Océanologique; Banyuls/mer F-66650 France
- CNRS; UMR 7621, LOMIC, Observatoire Océanologique; Banyuls/mer F-66650 France
| | - J. Caparros
- UPMC University Paris 06, UMR 7621, LOMIC,UMS 2348, Observatoire Océanologique; Banyuls/mer F-66650 France
- CNRS; UMR 7621, LOMIC, Observatoire Océanologique; Banyuls/mer F-66650 France
| | - P. Catala
- UPMC University Paris 06, UMR 7621, LOMIC,UMS 2348, Observatoire Océanologique; Banyuls/mer F-66650 France
- CNRS; UMR 7621, LOMIC, Observatoire Océanologique; Banyuls/mer F-66650 France
| | - K. Escoubeyrou
- UPMC University Paris 06, UMR 7621, LOMIC,UMS 2348, Observatoire Océanologique; Banyuls/mer F-66650 France
- CNRS; UMS 2348; Observatoire Océanologique; Banyuls/mer F-66650 France
| | - L. Oriol
- UPMC University Paris 06, UMR 7621, LOMIC,UMS 2348, Observatoire Océanologique; Banyuls/mer F-66650 France
- CNRS; UMR 7621, LOMIC, Observatoire Océanologique; Banyuls/mer F-66650 France
| | - S. Blain
- UPMC University Paris 06, UMR 7621, LOMIC,UMS 2348, Observatoire Océanologique; Banyuls/mer F-66650 France
- CNRS; UMR 7621, LOMIC, Observatoire Océanologique; Banyuls/mer F-66650 France
| | - I. Obernosterer
- UPMC University Paris 06, UMR 7621, LOMIC,UMS 2348, Observatoire Océanologique; Banyuls/mer F-66650 France
- CNRS; UMR 7621, LOMIC, Observatoire Océanologique; Banyuls/mer F-66650 France
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Thomas DM, Martin CK, Lettieri S, Bredlau C, Kaiser K, Church T, Bouchard C, Heymsfield SB. Can a weight loss of one pound a week be achieved with a 3500-kcal deficit? Commentary on a commonly accepted rule. Int J Obes (Lond) 2013; 37:1611-3. [PMID: 23628852 DOI: 10.1038/ijo.2013.51] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [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: 12/10/2012] [Revised: 03/04/2013] [Accepted: 03/10/2013] [Indexed: 02/04/2023]
Abstract
Despite theoretical evidence that the model commonly referred to as the 3500-kcal rule grossly overestimates actual weight loss, widespread application of the 3500-kcal formula continues to appear in textbooks, on respected government- and health-related websites, and scientific research publications. Here we demonstrate the risk of applying the 3500-kcal rule even as a convenient estimate by comparing predicted against actual weight loss in seven weight loss experiments conducted in confinement under total supervision or objectively measured energy intake. We offer three newly developed, downloadable applications housed in Microsoft Excel and Java, which simulates a rigorously validated, dynamic model of weight change. The first two tools available at http://www.pbrc.edu/sswcp, provide a convenient alternative method for providing patients with projected weight loss/gain estimates in response to changes in dietary intake. The second tool, which can be downloaded from the URL http://www.pbrc.edu/mswcp, projects estimated weight loss simultaneously for multiple subjects. This tool was developed to inform weight change experimental design and analysis. While complex dynamic models may not be directly tractable, the newly developed tools offer the opportunity to deliver dynamic model predictions as a convenient and significantly more accurate alternative to the 3500-kcal rule.
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Affiliation(s)
- D M Thomas
- Center for Quantitative Obesity Research, Department of Mathematical Sciences, Montclair State University, Montclair, NJ, USA
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Nosek L, Cardot JM, Owens DR, Ibarra P, Bagate K, Vergnault G, Kaiser K, Fischer A, Heise T. Modified release terbutaline (SKP1052) for hypoglycaemia prevention: a proof-of-concept study in people with type 1 diabetes mellitus. Diabetes Obes Metab 2012; 14:1137-44. [PMID: 22988932 DOI: 10.1111/dom.12003] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2012] [Revised: 07/02/2012] [Accepted: 09/02/2012] [Indexed: 11/26/2022]
Abstract
AIMS In this randomized, single blind, cross-over study 2.5 mg and 5 mg of the modified-release terbutaline formulation (SKP-1052) were compared with conventional immediate-release terbutaline (IRT, 5 mg) and placebo on overnight blood glucose (BG) and hypoglycaemia in 30 subjects with type 1 diabetes mellitus. METHODS Subjects received subcutaneous injections of insulin glargine (individualized doses) before dinner. SKP-1052, IRT or placebo was administered around 21:00 hours. BG and terbutaline concentrations were monitored overnight for 10 h post-dosing. Endpoints comprised of the nadir BG (BGn 0-10 h, primary endpoint), mean overnight BG (BGmean), morning BG (BGmorning) and hypoglycaemia rates as well as pharmacokinetic (PK) endpoints. RESULTS SKP-1052 delayed release of terbutaline by 2 h [PK-tmax (mean ± SD) 5.0 ± 2.1 h (2.5 mg) and 4.7 ± 1.7 h (5 mg) vs. 2.6 ± 1.3 h with IRT, p < 0.01, respectively]. Compared with placebo, no significant differences were observed for BGn 0-10 h across treatments, but both 5 mg formulations showed less hypoglycaemic events [10 (IRT), 16 (SKP-1052) vs. 33], higher BGmean (120, 114 and 95 mg/dl) and BGmorning (126, 126 and 101 mg/dl, all comparisons p < 0.05 vs. placebo). Numerically higher BG-levels between 3 and 8 h post-dosing were observed with 2.5 mg SKP-1052 vs. placebo. CONCLUSIONS Compared with IRT SKP-1052 delays release of terbutaline. 2.5 mg SKP-1052 led to numerically higher BG 3 to 8 h post-dose without fasting hyperglycaemia while 5 mg SKP-1052 resulted in fasting hyperglycaemia vs. placebo. Future studies will investigate optimized doses of SKP-1052 for nocturnal hypoglycaemia prevention.
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17
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Cella D, Kaiser K, Beaumont J, Diaz J, McCann L, Mehmud F, Lata S, Bono P, Porta C, Escudier B. Quality of Life (QOL) among Renal Cell Carcinoma (RCC) Patients in A Randomized Double Blind Cross-Over Patient Preference Study of Pazopanib (P) Versus Sunitinib (S). Ann Oncol 2012. [DOI: 10.1016/s0923-7534(20)33447-5] [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: 11/29/2022] Open
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18
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Tamm M, Kaiser K, Grothe B, Lomax M. Einfluss eines neuen Kombinationspräparates aus Fluticasondipropionat/Formoterolfumarat auf die Nebennierenfunktion bei Asthmatikern und Gesunden. Pneumologie 2012. [DOI: 10.1055/s-0032-1302620] [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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19
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Price D, Papi A, Kaiser K, Grothe B, Lomax M. Kombinationspräparat Fluticasondipropionat/Formoterolfumarat ist in der Asthmatherapie bei Inhalation mit und ohne Spacer gleich wirksam und gut verträglich. Pneumologie 2012. [DOI: 10.1055/s-0032-1302619] [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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Dissanayake S, Sastre J, Papi A, Kaiser K, Grothe B, Lomax M, McIver T. P112 Fluticasone propionate/formoterol fumarate combination therapy reduces the risk of exacerbations compared with its individual components in patients with asthma. Thorax 2011. [DOI: 10.1136/thoraxjnl-2011-201054c.112] [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: 11/04/2022]
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21
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Price D, Papi A, Kaiser K, Grothe B, Lomax M, McIver T. P110 Fluticasone propionate/formoterol fumarate combination therapy is more efficacious in improving lung function than its individual components in patients with asthma. Thorax 2011. [DOI: 10.1136/thoraxjnl-2011-201054c.110] [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: 11/03/2022]
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22
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Sturm M, Kaiser K. Wirksamkeit und Sicherheit einer fixen Kombination aus Fluticason/Formoterol in einem pMDI bei leichtem bis mittelschwerem Asthma. Pneumologie 2010. [DOI: 10.1055/s-0030-1251177] [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: 10/19/2022]
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Kardos P, Kaiser K. Wirksamkeit und Sicherheit einer fixen Kombination aus Fluticason/Formoterol in einem pMDI bei mittelschwerem bis schwerem Asthma. Pneumologie 2010. [DOI: 10.1055/s-0030-1251357] [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: 10/19/2022]
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24
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Kaiser K, Thurn P. Beitrag zur Röntgenkymographie der Aorta. ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0029-1232439] [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: 10/20/2022]
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25
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Kaiser K, Frank U. Antimikrobielle Resistenz als externer Effekt des Einsatzes von Antibiotika – Zusammenhänge und Implikationen für die pharmakoökonomische Analyse des klinikinternen Einsatzes von Antibiotika. Gesundh ökon Qual manag 2009. [DOI: 10.1055/s-2008-1027791] [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] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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26
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Batus M, Myint R, Coon J, Basu S, Kaiser K, Fidler M, Bonomi P. N-cadherin, E-cadherin, ERCC1, and c-kit expression in small cell lung cancer (SCLC) and potential for new therapeutic targets. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.e22157] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
e22157 Background: Minimal advances have been made in the treatment of SCLC. Molecular markers may allow us to better stratify patients (pts) for new treatment options and drug combinations. The objective of our study was to determine the frequency and potential prognostic significance of N-cadherin (N-cad), E-cadherin (E-cad), ERCC1, and c-kit (CD117) expression in SCLC. Methods: Tissue from 132 pts with SCLC was retrospectively stained for N-cad, E-cad, ERCC1, and c-kit. Frequency of expression (% of tumor cells staining positive) was measured on a scale of 0–4 (freq 0=no expression (<1%), freq 1=1–10%, freq 2=11–35%, freq 3=36–70%, freq 4=71–100%). Charts were reviewed for stage, performance status, date of diagnosis/death, survival, and treatment (type, dates, response). The frequency of molecular markers was correlated with clinical data and overall survival. Results: Age range 42 to 97 years, 65 male:67 female, and 64 had limited and 68 had extensive stage. Of the 132 pts, 75% had tumors that expressed (frequency ≥ 1) N-cad, 58% E-cad, 70% ERCC1, and 55% c-kit. Comparing tumor marker expression with survival using either the Log-Rank Test or the Wilcoxon Test, there was no significant association for N-cad, E-cad, or ERCC1. However, tumors that expressed c-kit with frequency ≥ 3 had a trend toward superior survival compared with frequency < 3. Median survival for c-kit frequency ≥ 3 was 496 days compared to 312 days for frequency < 3 (p = 0.09, Log-Rank Test). Conclusions: In our retrospective study of 132 SCLC pts, we found that all 4 markers were expressed in greater than 50% of specimens, and that higher c-kit expression was associated with marginally significant increase in overall survival. Though previous experience with imatinib alone or with chemotherapy showed limited clinical activity in unselected SCLC pts, given preclinical synergy with cisplatin, it seems reasonable to consider combination therapy with cisplatin/etoposide and imatinib in pts selected for high c-kit expression. [Table: see text] No significant financial relationships to disclose.
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Affiliation(s)
- M. Batus
- Rush University Medical Center, Palos Park, IL; Rush University Medical Center, Chicago, IL
| | - R. Myint
- Rush University Medical Center, Palos Park, IL; Rush University Medical Center, Chicago, IL
| | - J. Coon
- Rush University Medical Center, Palos Park, IL; Rush University Medical Center, Chicago, IL
| | - S. Basu
- Rush University Medical Center, Palos Park, IL; Rush University Medical Center, Chicago, IL
| | - K. Kaiser
- Rush University Medical Center, Palos Park, IL; Rush University Medical Center, Chicago, IL
| | - M. Fidler
- Rush University Medical Center, Palos Park, IL; Rush University Medical Center, Chicago, IL
| | - P. Bonomi
- Rush University Medical Center, Palos Park, IL; Rush University Medical Center, Chicago, IL
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Beck E, Kaiser K. Sicherheit von FlutiForm in der Langzeittherapie. Pneumologie 2009. [DOI: 10.1055/s-0029-1214139] [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: 10/21/2022]
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D'Urzo A, Nathan R, Kaiser K, Renz C, Jain R, Perdok R, Doan T. Efficacy of Twice Daily Fluticasone Propionate and Formoterol Fumarate Combination Administered Using an HFA pMDI in Patients with Mild to Moderate Asthma. J Allergy Clin Immunol 2009. [DOI: 10.1016/j.jaci.2008.12.275] [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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Kaiser K. Zur Klinik der sogenannten Pleuraendotheliome (Mesotheliome). Respiration 2008. [DOI: 10.1159/000191137] [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: 11/19/2022] Open
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30
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Bryson YJ, Mirochnick M, Stek A, Mofenson LM, Connor J, Capparelli E, Watts DH, Huang S, Hughes MD, Kaiser K, Purdue L, Asfaw Y, Keller M, Smith E. Pharmacokinetics and safety of nelfinavir when used in combination with zidovudine and lamivudine in HIV-infected pregnant women: Pediatric AIDS Clinical Trials Group (PACTG) Protocol 353. HIV Clin Trials 2008; 9:115-25. [PMID: 18474496 DOI: 10.1310/hct0902-115] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
BACKGROUND Combination antiretroviral regimens including nelfinavir (NFV) are commonly used in pregnancy. We studied the safety, antiviral effect, and pharmacokinetics of NFV and its M8 metabolite with two dosing regimens in combination with zidovudine (ZDV) and lamivudine (3TC) in HIV-infected pregnant women. METHOD HIV-infected pregnant women between 14 and 34 weeks gestation received NFV (Cohort 1: 750 mg tid, n = 10; Cohort 2: 1250 mg bid, n = 23) with ZDV and 3TC. Serial blood sampling for NFV concentrations was performed antepartum (AP) and 6 weeks postpartum (PP). Maternal and cord blood samples were also obtained at delivery. NFV and M8 levels were determined by high-performance liquid chromatography. The pharmacokinetic (PK) target was an extrapolated NFV AUC0-24 > 30 mug . h/mL. Mothers were followed frequently for potential clinical and laboratory toxicity. RESULTS Overall, NFV in combination with ZDV and 3TC was well tolerated. The PK target was met in 3/8 AP and 5/7 PP in Cohort 1 and 17/21 AP and 16/17 PP in Cohort 2. When Cohort 2 NFV PK parameters AP and PP were compared, median Cmax (3.90 microg/mL vs. 5.01 microg/mL, p < .05) and AUC0-24 (56.6 vs. 86.8 microg . h/mL, p < .05) were increased PP and oral clearance (Cl/F; 44.2 vs. 28.8 L/h, p < .05) was decreased PP. The average M8/NFV ratio was increased PP compared to AP (0.085 vs. 0.29, p < .001). Placental transfer of NFV was low with a median cord blood:maternal plasma ratio at delivery of 0.05. Maternal mean CD4+ T cell counts increased significantly and plasma HIV-1 RNA levels decreased from entry to delivery and 6 to 12 weeks postpartum. CONCLUSION NFV used in combination with ZDV and 3TC was well tolerated in pregnant HIV-infected women and produced a significant improvement in HIV disease parameters. NFV drug exposure is inadequate in most pregnant women receiving 750 mg tid but is much improved with 1250 mg bid. NFV crosses the placenta poorly. The AP increase in NFV oral clearance and decrease in M8/NFV ratio suggest that CYP3A activity increases relative to CYP2C19 activity during pregnancy.
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Affiliation(s)
- Y J Bryson
- David Geffen School of Medicine at UCLA, Los Angeles, California 90095-1752, USA.
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Fidler MJ, Basu S, Buckingham L, Kaiser K, McCormack SE, Coon JS, Bonomi PD. Insulin-like growth factor receptor 1 (IGFR-1) and outcome measures in advanced non-small cell lung cancer (NSCLC) patients treated with gefitinib. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.8036] [Citation(s) in RCA: 6] [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: 11/20/2022] Open
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Buckingham L, Faber LP, Kim AW, Kaiser K, Barger C, Basu S, Liptay MJ, Bonomi PD, Coon JS. Tumor suppressor gene CpG site methylation and outcome in surgically treated stage I-II non-small cell lung cancer patients. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.11035] [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: 11/20/2022] Open
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Bienvenu AL, Ferrandiz J, Kaiser K, Latour C, Picot S. Artesunate-erythropoietin combination for murine cerebral malaria treatment. Acta Trop 2008; 106:104-8. [PMID: 18359468 DOI: 10.1016/j.actatropica.2008.02.001] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2007] [Revised: 01/29/2008] [Accepted: 02/04/2008] [Indexed: 01/08/2023]
Abstract
Cerebral malaria is the most severe and rapidly fatal complication of Plasmodium falciparum infection. Despite appropriate anti-malarial treatment using quinine or artemisinin derivatives, 10-20% of mortality still occurs during the acute phase. To improve cerebral malaria outcome, adjunctive therapies are clearly needed. Most experiments in this area have been dedicated to immuno-modulation with various successes. Since erythropoietin has been shown to be highly effective in human ischemic stroke and in murine cerebral malaria, we addressed the issue of cerebral malaria outcome improvement by erythropoietin-artesunate drug combination. Compared to the previous study using erythropoietin high doses at the early beginning of the disease, erythropoietin treatment was decreased by six-fold and delayed to the pre-mortem phase. We studied effects on survival and on clinical recovery of the drug combination given from day 6 to day 8 post-infection to CBA/J mice infected by Plasmodium berghei ANKA. We showed that the artesunate-erythropoietin drug combination led to clinical recovery 24 h earlier for surviving mice, and to increase in the global survival rate compared to artesunate monotherapy (p<0.01). Since erythropoietin has no effect on parasite clearance, it could be stated that this drug combination is efficient and that erythropoietin could be a lead for the implementation of a new adjunctive therapy during the acute phase of cerebral malaria.
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Chhin B, Pham JT, El Zein L, Kaiser K, Merrot O, Bouvagnet P. Identification of transcripts overexpressed during airway epithelium differentiation. Eur Respir J 2008; 32:121-8. [PMID: 18321927 DOI: 10.1183/09031936.00172107] [Citation(s) in RCA: 5] [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: 11/05/2022]
Abstract
Human airway epithelium, the defence at the forefront of protecting the respiratory tract, evacuates inhaled particles by a permanent beating of epithelial cell cilia. When deficient, this organelle causes primary ciliary dyskinesia, and, despite numerous studies, data regarding ciliated cell gene expression remain incomplete. The aim of the present study was to identify genes specifically expressed in human ciliated respiratory cells via transcriptional analysis. The transcriptome of dedifferentiated epithelial cells was subtracted from that of fully redifferentiated cells using complementary DNA representational difference analysis. In order to validate the results, gene overexpression in ciliated cells was confirmed by real-time PCR, and by comparing the present list of genes overexpressed in ciliated cells to lists obtained in previous studies. A total of 53 known and 12 unknown genes overexpressed in ciliated cells were identified. The majority (66%) of known genes had never previously been reported as being involved in ciliogenesis, and the unknown genes represent hypothetical novel transcript isoforms or new genes not yet reported in databases. Finally, several genes identified here were located in genomic regions involved in primary ciliary dyskinesia by linkage analysis. In conclusion, the present study revealed sequences of new cilia-related genes, new transcript isoforms and novel genes which should be further characterised to aid understanding of their function(s) and their probable disorder-related involvement.
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Affiliation(s)
- B Chhin
- Laboratory of Cardiogenetics, Laboratory Team 4171, University of Lyon 1, France
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Leong TY, Kaiser K, Miksch S. Section 5: Decision Support, Knowledge Representation and Management: Free and Open Source Enabling Technologies for Patient-Centric, Guideline-Based Clinical Decision Support: A Survey. Yearb Med Inform 2007. [DOI: 10.1055/s-0038-1638529] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
Abstract
SummaryGuideline-based clinical decision support is an emerging paradigm to help reduce error, lower cost, and improve quality in evidence-based medicine. The free and open source (FOS) approach is a promising alternative for delivering cost-effective information technology (IT) solutions in health care. In this paper, we survey the current FOS enabling technologies for patient-centric, guideline-based care, and discuss the current trends and future directions of their role in clinical decision support.We searched PubMed, major biomedical informatics websites, and the web in general for papers and links related to FOS health care IT systems. We also relied on our background and knowledge for specific subtopics. We focused on the functionalities of guideline modeling tools, and briefly examined the supporting technologies for terminology, data exchange and electronic health record (EHR) standards.To effectively support patient-centric, guideline-based care, the computerized guidelines and protocols need to be integrated with existing clinical information systems or EHRs. Technologies that enable such integration should be accessible, interoperable, and scalable. A plethora of FOS tools and techniques for supporting different knowledge management and quality assurance tasks involved are available. Many challenges, however, remain in their implementation.There are active and growing trends of deploying FOS enabling technologies for integrating clinical guidelines, protocols, and pathways into the main care processes. The continuing development and maturation of such technologies are likely to make increasingly significant contributions to patient-centric, guidelinebased clinical decision support.
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Borgia JA, Frankenberger C, Kaiser K, McCormack SE, Usha L, Rotmensch J, Coon JS. Serum biomarker discovery for ovarian serous carcinoma using novel proteomic methods. J Clin Oncol 2007. [DOI: 10.1200/jco.2007.25.18_suppl.16058] [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: 11/20/2022] Open
Abstract
16058 Background: Ovarian serous carcinoma (OSC) is the most common ovarian cancer sub-type and fourth leading cause of cancer-related deaths for women in the US. Unfortunately, more than two-thirds of women with ovarian cancer present at an advanced stage, when prognosis is poor. Developing methods to detect ovarian cancer at stage I, when it is 90% curable by surgery, or at stage II where survival is 70%, offers the best prospect for changing the clinical course of this dread malignancy. Methods: Serum specimens were collected both before and 3–6 weeks after tumor resection for patients with Stage I/ II high-grade serous carcinoma. None suffered recurrence within 6 months. We collected 98 ‘paired’ (pre- and post operative) serum specimens; including 41 benign paired specimens for comparison. A SELDI-TOF mass spectrometer was used to generate the serum proteomic profiles, optimized for the 2,000–40,000 m/z range. All data analyses were performed in a blinded manner using Bioconductor, an extension of the R-project statistical platform (v2.2.0). Raw spectra were processed as follows: baseline subtraction, spectra normalization, and differential peak detection. Aligned peaks were sorted into groups, based on tumor pathology and pre- vs. post-operative specimen type, and compared using a two tailed homoscedastic t-test. Results: The proteomes of pre- and post-operative serum from 10 patients with OSC were evaluated for significant changes in composition and compared with a set of 8 ‘normal’ specimens (i.e. patients undergoing major surgery for benign disease). We identified 18 serum components common to all OSC pre-op specimens that were extensively reduced or absent (p < 0.05) after tumor resection and 26 components capable of discerning pre-op OSC from pre-op normal specimens (p < 0.05). Most notable of these are components with m/z ratios of 2029.1, 2203.6, 6442.3, and 6851.9, based on level of significance (p < 0.001). Conclusions: These results validate the power of our ‘pre- vs. post- operative’ analysis strategy for the identification of novel serum biomarker candidates. Efforts are currently focused on expanding the scope of our specimen bank and identifying the putative biomarker candidates via mass spectrometry. No significant financial relationships to disclose.
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Affiliation(s)
| | | | - K. Kaiser
- Rush University Medical Center, Chicago, IL
| | | | - L. Usha
- Rush University Medical Center, Chicago, IL
| | | | - J. S. Coon
- Rush University Medical Center, Chicago, IL
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Pigeau G, Bozza E, Kaiser K, Inglis D. Concentration effect of Riesling Icewine juice on yeast performance and wine acidity. J Appl Microbiol 2007; 103:1691-8. [DOI: 10.1111/j.1365-2672.2007.03397.x] [Citation(s) in RCA: 27] [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] [Indexed: 11/30/2022]
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Meslin B, Barnadas C, Boni V, Latour C, De Monbrison F, Kaiser K, Picot S. Features of Apoptosis inPlasmodium falciparumErythrocytic Stage through a Putative Role of PfMCA1 Metacaspase‐Like Protein. J Infect Dis 2007; 195:1852-9. [PMID: 17492602 DOI: 10.1086/518253] [Citation(s) in RCA: 87] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2006] [Accepted: 01/17/2007] [Indexed: 11/03/2022] Open
Abstract
The ability to undergo apoptosis, previously thought to be exclusive to multicellular organisms, has been demonstrated in unicellular parasites. On the basis of an observation that Plasmodium "crisis forms" were seen in vitro after cultivation in media containing an antimalarial drug, we attempted to determine whether Plasmodium falciparum has the ability to undergo apoptosis. By use of either the apoptosis-inducer etoposide or the antimalarial chloroquine, apoptosis in Plasmodium asexual stages was evident by the observation of DNA fragmentation and disruption of transmembrane mitochondrial potential. Next, we sought to determine whether Plasmodium produces specific cysteine proteases that can induce apoptosis. We hypothesized that the 2 metacaspase-like proteins present in the Plasmodium genome contained features typical of downstream execution steps and upstream signaling pathways such caspase activation and domain recruitment. We report that one of the metacaspase genes, PF13_0289, in addition to a universally conserved catalytic cysteine and histidine dyad required for catalysis activity, contains a putative caspase recruitment domain in the N-terminal amino acid sequence. This putative P. falciparum metacaspase protein has been designated PfMCA1. Our findings offer important insights into parasite survival strategies that could open new ways for therapeutic alternatives to drug resistance.
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Affiliation(s)
- Benoît Meslin
- University Claude Bernard Lyon 1, Equipe d'Acceuil 41-70, Paristology and Tropical Medicine, Faculty of Medicine, Lyon, 69373, France
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Kaiser K, Picot S. Reply to Lackner et al. J Infect Dis 2007. [DOI: 10.1086/513285] [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: 11/03/2022] Open
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Said-Pullicino D, Kaiser K, Guggenberger G, Gigliotti G. Changes in the chemical composition of water-extractable organic matter during composting: distribution between stable and labile organic matter pools. Chemosphere 2007; 66:2166-76. [PMID: 17125814 DOI: 10.1016/j.chemosphere.2006.09.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2006] [Revised: 08/28/2006] [Accepted: 09/01/2006] [Indexed: 05/12/2023]
Abstract
Aerobic decomposition and stabilization of organic matter during the composting of waste materials is primarily due to the biochemical transformation of water-soluble compounds in the liquid phase by the microbial biomass. For this reason water-soluble organic matter represents the most active fraction of compost, both biologically and chemically, and thus should directly reflect the biochemical alteration of organic matter. This work aims to elucidate the microbial-mediated processes responsible for the distribution of soluble organic matter between stable and labile pools with composting time. Accordingly, chemical analysis as well as UV absorption, and 1H and 13C-NMR spectroscopy of samples collected during the industrial composting of urban waste revealed microbial induced transformation of water-extractable organic matter over time. The chemical composition changed from labile, hydrophilic, plant-derived organic compounds in the beginning to predominately stable, hydrophobic moieties comprising lignin-derived phenols and microbially-derived carbohydrates at later stages of composting.
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Affiliation(s)
- D Said-Pullicino
- Department of Agricultural and Environmental Science, University of Perugia, Borgo XX Giugno 72, 06121 Perugia, Italy.
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Groetzner J, Schulz U, Kaczmarek I, Stegemann E, Kaiser K, Voss M, Wittwer T, Wahlers T, Schirmer J, Sohn H, Welp H, Schmid C, Meiser B, Reichart B. 469: Prospective, randomized, multicenter trial comparing conversion to a CNI-free regimen (MMF & sirolimus) vs. a CNI-reduced, MMF-based immunosuppression to improve renal function in late cardiac transplant recipients. J Heart Lung Transplant 2007. [DOI: 10.1016/j.healun.2006.11.492] [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] Open
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Kaiser K, Van Loon AM, Pelloux H, Ferrandiz J, Picot S, Wallace P, Peyron F. Multicenter proficiency study for detection of Toxoplasma gondii in amniotic fluid by nucleic acid amplification methods. Clin Chim Acta 2007; 375:99-103. [PMID: 16860303 DOI: 10.1016/j.cca.2006.06.016] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2006] [Revised: 06/14/2006] [Accepted: 06/14/2006] [Indexed: 01/01/2023]
Abstract
UNLABELLED A proficiency panel was designed to assess the performance of nucleic acid amplification technologies for the detection of Toxoplasma gondii in amniotic fluid. METHODS The proficiency panel consisted of five lyophilised coded samples in a range of concentration between 5 to 1000 parasites/ml and a negative control. The distribution also included a questionnaire on the applied methods. RESULTS Thirty-three laboratories in 17 countries participated and returned a total of 38 data sets. The percentage of data sets achieving correct results on all panel samples was 42.1%, whereas two or more incorrect or equivocal results were reported for 36.8%. The lowest concentration (5 parasites/ml) was not identified correctly in 15 (39.5%) data sets. False positive results were reported by two laboratories both of which had not included a step in their procedure to rule out contamination. In 32 (84.2%) data sets an "in-house" method was used, and in 6 (15.8%) sets a commercial assay was applied. CONCLUSIONS Overall, the results of this study demonstrate the need for improvements in both sensitivity and specificity of molecular detection methods of T. gondii and for the development of international reference materials to help laboratories with the development and validation of their assays.
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Affiliation(s)
- Karine Kaiser
- Parasitology Laboratory, Hôpital de la Croix Rousse, Lyon, France
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Leong TY, Kaiser K, Miksch S. Free and open source enabling technologies for patient-centric, guideline-based clinical decision support: a survey. Yearb Med Inform 2007:74-86. [PMID: 17700908 PMCID: PMC2858818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2023] Open
Abstract
OBJECTIVES Guideline-based clinical decision support is an emerging paradigm to help reduce error, lower cost, and improve quality in evidence-based medicine. The free and open source (FOS) approach is a promising alternative for delivering cost-effective information technology (IT) solutions in health care. In this paper, we survey the current FOS enabling technologies for patient-centric, guideline-based care, and discuss the current trends and future directions of their role in clinical decision support. METHODS We searched PubMed, major biomedical informatics websites, and the web in general for papers and links related to FOS health care IT systems. We also relied on our background and knowledge for specific subtopics. We focused on the functionalities of guideline modeling tools, and briefly examined the supporting technologies for terminology, data exchange and electronic health record (EHR) standards. RESULTS To effectively support patient-centric, guideline-based care, the computerized guidelines and protocols need to be integrated with existing clinical information systems or EHRs. Technologies that enable such integration should be accessible, interoperable, and scalable. A plethora of FOS tools and techniques for supporting different knowledge management and quality assurance tasks involved are available. Many challenges, however, remain in their implementation. CONCLUSIONS There are active and growing trends of deploying FOS enabling technologies for integrating clinical guidelines, protocols, and pathways into the main care processes. The continuing development and maturation of such technologies are likely to make increasingly significant contributions to patient-centric, guideline-based clinical decision support.
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Affiliation(s)
- T Y Leong
- Medical Computing Laboratory, School of Computing, National University of Singapore, Singapore.
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Villaflor VM, Buckingham L, Gale M, Coon J, Mauer AM, Muzzafar T, Kaiser K, Shannon M, Morrison L, Bonomi P. EGFR mutations (muts), IHC and FISH status, and chromosome 7 gene copy number combined with pAkt expression as potential predictors of survival in non-small cell lung cancer (NSCLC) patients (pts) treated with gefitinib (GEF). J Clin Oncol 2006. [DOI: 10.1200/jco.2006.24.18_suppl.7182] [Citation(s) in RCA: 2] [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: 11/20/2022] Open
Abstract
7182 Background: EGFR and pAkt expression by immunohistochemistry (IHC), muts, and FISH status have been identified as possible molecular predictors for GEF efficacy in NSCLC (Cappuzzo, et. al, JNCI, 2005). The goal of this study was to independently evaluate these findings regarding survival (surv), and to assess the predictive value of mean chromosome 7 copy number/cell (C7). Methods: 150 consecutive Expanded Access Trial pts with >1 week GEF therapy were included for analysis. IHC (present vs not detected) was performed for 87 pts, and 58 pts were analyzed for muts by SSCP, mut-specific PCR, and sequencing. Tissue from 81 pts was evaluated for EGFR and C7 gene copy numbers by fluorescence in situ hybridization (FISH). Results: 150 pts (77 female, 73 male; median (md) age 67; 85 adenocarcinoma) received GEF; md follow-up was 5.8 months (mo). Overall response was 8% (2 CR, 10 PR); 56 pts had stable disease. Md Kaplan-Meier surv was 5.9 mo. IHC revealed that 47/87 pts (54%) had EGFR+, and 36/75 pts (48%) had pAkt + tumors. pAkt+ pts had significantly (sig) longer surv than pAkt− pts (11.4 vs 5.8 mo, p < .05). High polysomy was seen in 36/81 pts (44%) who were designated FISH+; 45 pts were FISH−. EGFR IHC and FISH positivity were not sig associated with surv. C7 was defined as low (<3.6, 63 pts) or high (≥3.6, 18 pts); md surv was 6.6 and 17.1 mo, respectively, p < .01. Muts were found in 17/58 tumors (29%). Md surv for pts with and without muts was 23.8 and 7.9 mo, respectively, p < .07. EGFR IHC− pAkt− pts (18 pts) had sig shorter surv than 57 pts with any pos value (4.7 vs 8.8 mo, p < .02). Double-positive pts had sig longer surv than pts with any neg value. Conclusions: These findings resemble but do not duplicate those reported by Cappuzzo, et al. Additionally, high C7, alone or combined with pAKT, may be an important predictor for GEF efficacy in NSCLC. Further studies of C7, a technically simple and reproducible FISH assay, are warranted. [Table: see text] [Table: see text]
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Affiliation(s)
- V. M. Villaflor
- Rush University Medical Center, Chicago, IL; University of Chicago Medical Center, Chicago, IL; Abbott Molecular, Inc., Des Plaines, IL
| | - L. Buckingham
- Rush University Medical Center, Chicago, IL; University of Chicago Medical Center, Chicago, IL; Abbott Molecular, Inc., Des Plaines, IL
| | - M. Gale
- Rush University Medical Center, Chicago, IL; University of Chicago Medical Center, Chicago, IL; Abbott Molecular, Inc., Des Plaines, IL
| | - J. Coon
- Rush University Medical Center, Chicago, IL; University of Chicago Medical Center, Chicago, IL; Abbott Molecular, Inc., Des Plaines, IL
| | - A. M. Mauer
- Rush University Medical Center, Chicago, IL; University of Chicago Medical Center, Chicago, IL; Abbott Molecular, Inc., Des Plaines, IL
| | - T. Muzzafar
- Rush University Medical Center, Chicago, IL; University of Chicago Medical Center, Chicago, IL; Abbott Molecular, Inc., Des Plaines, IL
| | - K. Kaiser
- Rush University Medical Center, Chicago, IL; University of Chicago Medical Center, Chicago, IL; Abbott Molecular, Inc., Des Plaines, IL
| | - M. Shannon
- Rush University Medical Center, Chicago, IL; University of Chicago Medical Center, Chicago, IL; Abbott Molecular, Inc., Des Plaines, IL
| | - L. Morrison
- Rush University Medical Center, Chicago, IL; University of Chicago Medical Center, Chicago, IL; Abbott Molecular, Inc., Des Plaines, IL
| | - P. Bonomi
- Rush University Medical Center, Chicago, IL; University of Chicago Medical Center, Chicago, IL; Abbott Molecular, Inc., Des Plaines, IL
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Morrison LE, Jewell SS, Jacobson KK, Kaiser K, Gale M, Muzzafar T, Mauer AM, Villaflor VM, Bonomi P, Coon JS. Associations between chromosome 7 aneusomy and EGFR copy number with survival and response to gefitinib in NSCLC. J Clin Oncol 2006. [DOI: 10.1200/jco.2006.24.18_suppl.7171] [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: 11/20/2022] Open
Abstract
7171 Background: EGFR, the presumed target of gefitinib and erlotinib, has been studied (expression, gene copy number, & mutations) for predicting response to these tyrosine kinase inhibitors (TKI), in non-small cell lung cancer (NSCLC). ’High polysomy’ and ’amplification’ of the EGFR gene, as defined by Cappuzzo et al. JNCI 97:643, using fluorescence in situ hybridization (FISH), showed significant association with objective response (Resp) and survival. We also measured EGFR and chromosome 7 (C7) copy numbers by FISH in 81 gefitinib-treated NSCLC patients (12 Resp). Using Cappuzzo’s FISH± parameter alone we saw similar trends but no statistical significance in the 81 patient group. Therefore we sought to optimize FISH parameters for these patients. Methods: FISH was performed (paraffin sections) using a 2-color probe set (Vysis LSI EGFR/CEP 7), median 80 cells per specimen. >50 parameters were derived from the data (e.g. mean EGFR/cell, C7/cell etc) and compared, using different threshold values, to Resp and survival. Results: The best single parameter associated with survival was the average C7/cell. Applying upper and lower thresholds of 3.6 and 2.0 C7/cell to delineate moderate from extreme ratios yielded median survival of 177 and 465 d, respectively (Kaplan-Meier, p < .002). A single threshold of 3.6, separating low from high, yielded survival of 201 and 522 d, respectively (p < .01). For these thresholds C7/cell was not associated with Resp, however, thresholds could be found for which both survival and Resp were significant. The best single parameter associated with Resp was average EGFR/cell. Of the 70 patients with EGFR/cell≤6.0, 63 (90%) did not respond while 5 of 11 patients (45%) with EGFR/cell >6.0 responded (p < .01). No EGFR/cell threshold could be found for which both survival and Resp were significant. Many 2-parameter combinations provided significant associations with both survival and Resp. Conclusions: Several FISH-derived parameters were significantly associated with either survival or Resp to gefitinib and a subset were associated with both. These parameters must be tested on independent data sets to determine their value in directing TKI therapy. [Table: see text]
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Affiliation(s)
- L. E. Morrison
- Abbott Molecular, Inc., Des Plaines, IL; Rush University Medical Center, Chicago, IL; University of Chicago, Chicago, IL
| | - S. S. Jewell
- Abbott Molecular, Inc., Des Plaines, IL; Rush University Medical Center, Chicago, IL; University of Chicago, Chicago, IL
| | - K. K. Jacobson
- Abbott Molecular, Inc., Des Plaines, IL; Rush University Medical Center, Chicago, IL; University of Chicago, Chicago, IL
| | - K. Kaiser
- Abbott Molecular, Inc., Des Plaines, IL; Rush University Medical Center, Chicago, IL; University of Chicago, Chicago, IL
| | - M. Gale
- Abbott Molecular, Inc., Des Plaines, IL; Rush University Medical Center, Chicago, IL; University of Chicago, Chicago, IL
| | - T. Muzzafar
- Abbott Molecular, Inc., Des Plaines, IL; Rush University Medical Center, Chicago, IL; University of Chicago, Chicago, IL
| | - A. M. Mauer
- Abbott Molecular, Inc., Des Plaines, IL; Rush University Medical Center, Chicago, IL; University of Chicago, Chicago, IL
| | - V. M. Villaflor
- Abbott Molecular, Inc., Des Plaines, IL; Rush University Medical Center, Chicago, IL; University of Chicago, Chicago, IL
| | - P. Bonomi
- Abbott Molecular, Inc., Des Plaines, IL; Rush University Medical Center, Chicago, IL; University of Chicago, Chicago, IL
| | - J. S. Coon
- Abbott Molecular, Inc., Des Plaines, IL; Rush University Medical Center, Chicago, IL; University of Chicago, Chicago, IL
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Kaiser K, Texier A, Ferrandiz J, Buguet A, Meiller A, Latour C, Peyron F, Cespuglio R, Picot S. Recombinant human erythropoietin prevents the death of mice during cerebral malaria. J Infect Dis 2006; 193:987-95. [PMID: 16518761 DOI: 10.1086/500844] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2005] [Accepted: 10/21/2005] [Indexed: 11/03/2022] Open
Abstract
Cerebral involvement during malaria is a complication that leads to seizure, coma, and death. The effect of new neuroprotective therapies has not yet been investigated, although cerebral malaria shares some features with neurological stroke. Erythropoietin (EPO) is one of the more promising drugs in this area. We measured the effect of EPO on the survival of mice infected with Plasmodium berghei ANKA and demonstrated that inoculations of recombinant human EPO at the beginning of the clinical manifestations of cerebral malaria protect >90% of mice from death. This drug has no effect on the course of parasitemia. The effect of EPO was not related to either the inhibition of apoptosis in the brain or the regulation of the increase and decrease of nitric oxide production in the brain and blood, respectively. Tumor necrosis factor-alpha and interferon-gamma mRNA overexpression was inhibited by EPO, and treated mice had fewer brain hemorrhages. EPO has been used in patients with chronic diseases for years, and more recently it has been used to treat acute ischemic stroke. The data presented here provide the first evidence indicating that this cytokine could be useful for the symptomatic prevention of mortality during the acute stage of cerebral malaria.
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Affiliation(s)
- Karine Kaiser
- Equipe d'Accueil 37-32, Parasitologie et Médicine Tropicale, Faculté de Médecine, University Claude Bernard Lyon 1, Lyon, France
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Daiber A, Oelze M, Coldewey M, Kaiser K, Huth C, Schildknecht S, Bachschmid M, Nazirisadeh Y, Ullrich V, Mülsch A, Münzel T, Tsilimingas N. Hydralazine is a powerful inhibitor of peroxynitrite formation as a possible explanation for its beneficial effects on prognosis in patients with congestive heart failure. Biochem Biophys Res Commun 2005; 338:1865-74. [PMID: 16289107 DOI: 10.1016/j.bbrc.2005.10.106] [Citation(s) in RCA: 88] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2005] [Accepted: 10/19/2005] [Indexed: 11/28/2022]
Abstract
The hemodynamic and anti-ischemic effects of nitroglycerin (GTN) are rapidly blunted as a result of the development of nitrate tolerance. Hydralazine has been shown to prevent tolerance in experimental and clinical studies, all of which may be at least in part secondary to antioxidant properties of this compound. The antioxidant effects of hydralazine were tested in cell free systems, cultured smooth muscle cells, isolated mitochondria, and isolated vessels. Inhibitory effects on the formation of superoxide and/or peroxynitrite formation were tested using lucigenin and L-012 enhanced chemiluminescence as well as DHE-fluorescence. The peroxynitrite scavenging properties were also assessed by inhibition of nitration of phenol. Prevention of impairment of NO downstream signaling and GTN bioactivation was determined by measurement of P-VASP (surrogate parameter for the activity of the cGMP-dependent kinase-I, cGK-I) and mitochondrial aldehyde dehydrogenase (ALDH-2) activity. Hydralazine dose-dependently decreased the chemiluminescence signal induced by peroxynitrite from SIN-1 and by superoxide from HX/XO in a cell free system, by superoxide in smooth muscle cells and mitochondria acutely challenged with GTN. Moreover, hydralazine inhibited the peroxynitrite-mediated nitration of phenols as well as proteins in smooth muscle cells in a dose-dependent fashion. Finally, hydralazine normalized impaired cGK-I activity as well as impaired vascular ALDH-2 activity. Our results indicate that hydralazine is a highly potent radical scavenger. Thus, the combination with isosorbide dinitrate (ISDN) will favorably influence the nitroso-redox balance in the cardiovascular system in patients with congestive heart failure and may explain at least in part the improvement of prognosis in patients with chronic congestive heart failure.
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Affiliation(s)
- Andreas Daiber
- Klinikum der Johannes Gutenberg-Universität, II. Medizinische Klinik und Poliklinik, Labor für Molekulare Kardiologie, 55101 Mainz, Germany.
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Villaflor V, Buckingham L, Gale M, Coon J, Mauer A, Muzzafar T, Kaiser K, Zusag T, Faber L, Bonomi P. O-110 EGFR mutations and pAKT expression as potential predictors ofgefitinib efficacy in non-small cell lung cancer (NSCLC) patients (pts). Lung Cancer 2005. [DOI: 10.1016/s0169-5002(05)80244-2] [Citation(s) in RCA: 2] [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: 11/17/2022]
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Villaflor VM, Buckingham L, Gale M, Coon J, Mauer AM, Muzzafar T, Kaiser K, Zusag TW, Faber LP, Bonomi P. EGFR mutations and pAKT expression as potential predictors of gefitinib efficacy in non-small cell lung cancer (NSCLC) patients (pts). J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.7077] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- V. M. Villaflor
- Rush Univ Medcl Ctr, Chicago, IL; Univ of Chicago, Chicago, IL
| | - L. Buckingham
- Rush Univ Medcl Ctr, Chicago, IL; Univ of Chicago, Chicago, IL
| | - M. Gale
- Rush Univ Medcl Ctr, Chicago, IL; Univ of Chicago, Chicago, IL
| | - J. Coon
- Rush Univ Medcl Ctr, Chicago, IL; Univ of Chicago, Chicago, IL
| | - A. M. Mauer
- Rush Univ Medcl Ctr, Chicago, IL; Univ of Chicago, Chicago, IL
| | - T. Muzzafar
- Rush Univ Medcl Ctr, Chicago, IL; Univ of Chicago, Chicago, IL
| | - K. Kaiser
- Rush Univ Medcl Ctr, Chicago, IL; Univ of Chicago, Chicago, IL
| | - T. W. Zusag
- Rush Univ Medcl Ctr, Chicago, IL; Univ of Chicago, Chicago, IL
| | - L. P. Faber
- Rush Univ Medcl Ctr, Chicago, IL; Univ of Chicago, Chicago, IL
| | - P. Bonomi
- Rush Univ Medcl Ctr, Chicago, IL; Univ of Chicago, Chicago, IL
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