1
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Roders N, Nakid-Cordero C, Raineri F, Fayon M, Abecassis A, Choisy C, Nelson E, Maillard C, Garrick D, Talbot A, Fermand JP, Arnulf B, Bories JC. Dual Chimeric Antigen Receptor T Cells Targeting CD38 and SLAMF7 with Independent Signaling Demonstrate Preclinical Efficacy and Safety in Multiple Myeloma. Cancer Immunol Res 2024; 12:478-490. [PMID: 38289260 DOI: 10.1158/2326-6066.cir-23-0839] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 11/29/2023] [Accepted: 01/26/2024] [Indexed: 04/04/2024]
Abstract
Chimeric antigen receptor (CAR) T-cell therapy for multiple myeloma targeting B-cell maturation antigen (BCMA) induces high overall response rates. However, relapse still occurs and novel strategies for targeting multiple myeloma cells using CAR T-cell therapy are needed. SLAMF7 (also known as CS1) and CD38 on tumor plasma cells represent potential alternative targets for CAR T-cell therapy in multiple myeloma, but their expression on activated T cells and other hematopoietic cells raises concerns about the efficacy and safety of such treatments. Here, we used CRISPR/Cas9 deletion of the CD38 gene in T cells and developed DCAR, a double CAR system targeting CD38 and CS1 through activation and costimulation receptors, respectively. Inactivation of CD38 enhanced the anti-multiple myeloma activity of DCAR T in vitro. Edited DCAR T cells showed strong in vitro and in vivo responses specifically against target cells expressing both CD38 and CS1. Furthermore, we provide evidence that, unlike anti-CD38 CAR T-cell therapy, which elicited a rapid immune reaction against hematopoietic cells in a humanized mouse model, DCAR T cells showed no signs of toxicity. Thus, DCAR T cells could provide a safe and efficient alternative to anti-BCMA CAR T-cell therapy to treat patients with multiple myeloma.
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Affiliation(s)
- Nathalie Roders
- INSERM, Human Immunology, Pathophysiology, Immunotherapy (HIPI), Institut de Recherche Saint-Louis, Université de Paris-Cité, Paris, France
| | - Cecilia Nakid-Cordero
- INSERM, Human Immunology, Pathophysiology, Immunotherapy (HIPI), Institut de Recherche Saint-Louis, Université de Paris-Cité, Paris, France
| | - Fabio Raineri
- INSERM, Human Immunology, Pathophysiology, Immunotherapy (HIPI), Institut de Recherche Saint-Louis, Université de Paris-Cité, Paris, France
| | - Maxime Fayon
- INSERM, Human Immunology, Pathophysiology, Immunotherapy (HIPI), Institut de Recherche Saint-Louis, Université de Paris-Cité, Paris, France
| | - Audrey Abecassis
- INSERM, Human Immunology, Pathophysiology, Immunotherapy (HIPI), Institut de Recherche Saint-Louis, Université de Paris-Cité, Paris, France
| | - Caroline Choisy
- INSERM, Human Immunology, Pathophysiology, Immunotherapy (HIPI), Institut de Recherche Saint-Louis, Université de Paris-Cité, Paris, France
| | - Elisabeth Nelson
- INSERM, Human Immunology, Pathophysiology, Immunotherapy (HIPI), Institut de Recherche Saint-Louis, Université de Paris-Cité, Paris, France
| | | | - David Garrick
- INSERM, Human Immunology, Pathophysiology, Immunotherapy (HIPI), Institut de Recherche Saint-Louis, Université de Paris-Cité, Paris, France
| | - Alexis Talbot
- INSERM, Human Immunology, Pathophysiology, Immunotherapy (HIPI), Institut de Recherche Saint-Louis, Université de Paris-Cité, Paris, France
- Immuno-Hematology, Saint-Louis Hospital, Paris, France
| | - Jean-Paul Fermand
- INSERM, Human Immunology, Pathophysiology, Immunotherapy (HIPI), Institut de Recherche Saint-Louis, Université de Paris-Cité, Paris, France
- Immuno-Hematology, Saint-Louis Hospital, Paris, France
| | - Bertrand Arnulf
- INSERM, Human Immunology, Pathophysiology, Immunotherapy (HIPI), Institut de Recherche Saint-Louis, Université de Paris-Cité, Paris, France
- Immuno-Hematology, Saint-Louis Hospital, Paris, France
| | - Jean-Christophe Bories
- INSERM, Human Immunology, Pathophysiology, Immunotherapy (HIPI), Institut de Recherche Saint-Louis, Université de Paris-Cité, Paris, France
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2
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Alhaj Hussen K, Chabaane E, Nelson E, Lekiashvili S, Diop S, Keita S, Evrard B, Lardenois A, Delord M, Verhoeyen E, Cornils K, Kasraian Z, Macintyre EA, Cumano A, Garrick D, Goodhardt M, Andrieu GP, Asnafi V, Chalmel F, Canque B. Multimodal cartography of human lymphopoiesis reveals B and T/NK/ILC lineages are subjected to differential regulation. iScience 2023; 26:107890. [PMID: 37766969 PMCID: PMC10520540 DOI: 10.1016/j.isci.2023.107890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 08/24/2023] [Accepted: 09/07/2023] [Indexed: 09/29/2023] Open
Abstract
The developmental cartography of human lymphopoiesis remains incompletely understood. Here, we establish a multimodal map demonstrating that lymphoid specification follows independent direct or stepwise hierarchic routes converging toward the emergence of newly characterized CD117lo multi-lymphoid progenitors (MLPs) that undergo a proliferation arrest before entering the CD127- (NK/ILC/T) or CD127+ (B) lymphoid pathways. While the differentiation of CD127- early lymphoid progenitors is mainly driven by Flt3 signaling, emergence of their CD127+ counterparts is regulated cell-intrinsically and depends exclusively on the divisional history of their upstream precursors, including hematopoietic stem cells. Further, transcriptional mapping of differentiation trajectories reveals that whereas myeloid granulomonocytic lineages follow continuous differentiation pathways, lymphoid trajectories are intrinsically discontinuous and characterized by sequential waves of cell proliferation allowing pre-commitment amplification of lymphoid progenitor pools. Besides identifying new lymphoid specification pathways and regulatory checkpoints, our results demonstrate that NK/ILC/T and B lineages are under fundamentally distinct modes of regulation. (149 words).
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Affiliation(s)
- Kutaiba Alhaj Hussen
- INSERM U976, Université de Paris, École Pratique des Hautes Études/PSL Research University, Institut de Recherche Saint Louis, Paris, France
- Service de Biochimie, Université de Paris Saclay, Hôpital Paul Brousse, AP-HP, Villejuif, Paris, France
| | - Emna Chabaane
- INSERM U976, Université de Paris, École Pratique des Hautes Études/PSL Research University, Institut de Recherche Saint Louis, Paris, France
| | - Elisabeth Nelson
- INSERM U976, Université de Paris, École Pratique des Hautes Études/PSL Research University, Institut de Recherche Saint Louis, Paris, France
| | - Shalva Lekiashvili
- INSERM U976, Université de Paris, École Pratique des Hautes Études/PSL Research University, Institut de Recherche Saint Louis, Paris, France
| | - Samuel Diop
- INSERM U976, Université de Paris, École Pratique des Hautes Études/PSL Research University, Institut de Recherche Saint Louis, Paris, France
| | - Seydou Keita
- INSERM U976, Université de Paris, École Pratique des Hautes Études/PSL Research University, Institut de Recherche Saint Louis, Paris, France
| | - Bertrand Evrard
- University Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail) - UMR_S 1085, F-35000 Rennes, France
| | - Aurélie Lardenois
- University Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail) - UMR_S 1085, F-35000 Rennes, France
| | - Marc Delord
- INSERM U976, Université de Paris, École Pratique des Hautes Études/PSL Research University, Institut de Recherche Saint Louis, Paris, France
| | - Els Verhoeyen
- CIRI, International Center for Infectiology Research, Université de Lyon, INSERM U1111, Lyon, France
- Centre Mediterranéen de Médecine Moléculaire (C3M), INSERM U1065, Nice, France
| | - Kerstin Cornils
- Division of Pediatric Stem Cell Transplantation and Immunology, Department of Pediatric Hematology and Oncology, University Medical Center Hamburg-Eppendorf and Research Institute Children’s Cancer Center, Hamburg, Germany
| | - Zeinab Kasraian
- INSERM U976, Université de Paris, École Pratique des Hautes Études/PSL Research University, Institut de Recherche Saint Louis, Paris, France
- Institut Necker Enfants-Malades, INSERM U1151, Hôpital Necker Enfants-Malades, Laboratoire d'Onco-Hématologie, Assistance Publique-Hôpitaux de Paris (AP-HP), Université de Paris, Paris, France
| | - Elizabeth A. Macintyre
- Institut Necker Enfants-Malades, INSERM U1151, Hôpital Necker Enfants-Malades, Laboratoire d'Onco-Hématologie, Assistance Publique-Hôpitaux de Paris (AP-HP), Université de Paris, Paris, France
| | - Ana Cumano
- Unit of Lymphopoiesis, Immunology Department, Institut Pasteur, Paris, France
| | - David Garrick
- INSERM U976, Université de Paris, École Pratique des Hautes Études/PSL Research University, Institut de Recherche Saint Louis, Paris, France
| | - Michele Goodhardt
- INSERM U976, Université de Paris, École Pratique des Hautes Études/PSL Research University, Institut de Recherche Saint Louis, Paris, France
| | - Guillaume P. Andrieu
- Institut Necker Enfants-Malades, INSERM U1151, Hôpital Necker Enfants-Malades, Laboratoire d'Onco-Hématologie, Assistance Publique-Hôpitaux de Paris (AP-HP), Université de Paris, Paris, France
| | - Vahid Asnafi
- Institut Necker Enfants-Malades, INSERM U1151, Hôpital Necker Enfants-Malades, Laboratoire d'Onco-Hématologie, Assistance Publique-Hôpitaux de Paris (AP-HP), Université de Paris, Paris, France
| | - Frederic Chalmel
- University Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail) - UMR_S 1085, F-35000 Rennes, France
| | - Bruno Canque
- INSERM U976, Université de Paris, École Pratique des Hautes Études/PSL Research University, Institut de Recherche Saint Louis, Paris, France
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3
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Keita S, Diop S, Lekiashvili S, Chabaane E, Nelson E, Strullu M, Arfeuille C, Guimiot F, Domet T, Duchez S, Evrard B, Darde T, Larghero J, Verhoeyen E, Cumano A, Macintyre EA, Kasraian Z, Jouen F, Goodhardt M, Garrick D, Chalmel F, Alhaj Hussen K, Canque B. Distinct subsets of multi-lymphoid progenitors support ontogeny-related changes in human lymphopoiesis. Cell Rep 2023; 42:112618. [PMID: 37294633 DOI: 10.1016/j.celrep.2023.112618] [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] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 04/13/2023] [Accepted: 05/22/2023] [Indexed: 06/11/2023] Open
Abstract
Changes in lymphocyte production patterns occurring across human ontogeny remain poorly defined. In this study, we demonstrate that human lymphopoiesis is supported by three waves of embryonic, fetal, and postnatal multi-lymphoid progenitors (MLPs) differing in CD7 and CD10 expression and their output of CD127-/+ early lymphoid progenitors (ELPs). In addition, our results reveal that, like the fetal-to-adult switch in erythropoiesis, transition to postnatal life coincides with a shift from multilineage to B lineage-biased lymphopoiesis and an increase in production of CD127+ ELPs, which persists until puberty. A further developmental transition is observed in elderly individuals whereby B cell differentiation bypasses the CD127+ compartment and branches directly from CD10+ MLPs. Functional analyses indicate that these changes are determined at the level of hematopoietic stem cells. These findings provide insights for understanding identity and function of human MLPs and the establishment and maintenance of adaptative immunity.
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Affiliation(s)
- Seydou Keita
- INSERM U976, Université de Paris, École Pratique des Hautes Études/PSL Research University, Institut de Recherche Saint Louis, Paris, France
| | - Samuel Diop
- INSERM U976, Université de Paris, École Pratique des Hautes Études/PSL Research University, Institut de Recherche Saint Louis, Paris, France; Laboratoire Cognitions Humaine et Artificielle (CHArt) EA 4004 FED 4246, École Pratique des Hautes Études/PSL Research University, Paris, France
| | - Shalva Lekiashvili
- INSERM U976, Université de Paris, École Pratique des Hautes Études/PSL Research University, Institut de Recherche Saint Louis, Paris, France
| | - Emna Chabaane
- INSERM U976, Université de Paris, École Pratique des Hautes Études/PSL Research University, Institut de Recherche Saint Louis, Paris, France
| | - Elisabeth Nelson
- INSERM U976, Université de Paris, École Pratique des Hautes Études/PSL Research University, Institut de Recherche Saint Louis, Paris, France
| | - Marion Strullu
- Service d'Hémato-Immunologie Pédiatrique, Inserm U1131, Université de Paris, Hôpital Robert-Debré, AP-HP, Paris, France
| | - Chloé Arfeuille
- Service d'Hémato-Immunologie Pédiatrique, Inserm U1131, Université de Paris, Hôpital Robert-Debré, AP-HP, Paris, France
| | - Fabien Guimiot
- INSERM UMR 1141, Service de Biologie du Développement, Université de Paris, Hôpital Robert-Debré, AP-HP, Paris, France
| | - Thomas Domet
- AP-HP, Hôpital Saint-Louis, Unité de Thérapie Cellulaire, CIC de Biothérapies, Université de Paris, INSERM U976, Paris, France
| | - Sophie Duchez
- Plateforme d'Imagerie et de Tri Cellulaire, Institut de Recherche Saint Louis, Paris, France
| | - Bertrand Evrard
- INSERM, EHESP, IRSET (Institut de Recherche en Santé, Environnement et Travail), UMR_S 1085, University Rennes, Rennes, France
| | | | - Jerome Larghero
- AP-HP, Hôpital Saint-Louis, Unité de Thérapie Cellulaire, CIC de Biothérapies, Université de Paris, INSERM U976, Paris, France
| | - Els Verhoeyen
- CIRI, International Center for Infectiology Research, Université de Lyon, INSERM U1111, Lyon, France; Centre Mediterranéen de Médecine Moléculaire (C3M), INSERM U1065, Nice, France
| | - Ana Cumano
- Unit of Lymphopoiesis, Immunology Department, Institut Pasteur, Paris, France
| | - Elizabeth A Macintyre
- Institut Necker Enfants-Malades, Team 2, INSERM Unité 1151, Hôpital Necker Enfants-Malades, Laboratoire d'Onco-Hématologie, Assistance Publique-Hôpitaux de Paris (AP-HP), Université de Paris, Paris, France
| | - Zeinab Kasraian
- Institut Necker Enfants-Malades, Team 2, INSERM Unité 1151, Hôpital Necker Enfants-Malades, Laboratoire d'Onco-Hématologie, Assistance Publique-Hôpitaux de Paris (AP-HP), Université de Paris, Paris, France
| | - François Jouen
- Laboratoire Cognitions Humaine et Artificielle (CHArt) EA 4004 FED 4246, École Pratique des Hautes Études/PSL Research University, Paris, France
| | - Michele Goodhardt
- INSERM U976, Université de Paris, École Pratique des Hautes Études/PSL Research University, Institut de Recherche Saint Louis, Paris, France
| | - David Garrick
- INSERM U976, Université de Paris, École Pratique des Hautes Études/PSL Research University, Institut de Recherche Saint Louis, Paris, France
| | - Frederic Chalmel
- INSERM, EHESP, IRSET (Institut de Recherche en Santé, Environnement et Travail), UMR_S 1085, University Rennes, Rennes, France
| | - Kutaiba Alhaj Hussen
- INSERM U976, Université de Paris, École Pratique des Hautes Études/PSL Research University, Institut de Recherche Saint Louis, Paris, France; Service de Biochimie, Université de Paris Saclay, Hôpital Paul Brousse, AP-HP, Paris, France.
| | - Bruno Canque
- INSERM U976, Université de Paris, École Pratique des Hautes Études/PSL Research University, Institut de Recherche Saint Louis, Paris, France.
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4
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Abecassis A, Roders N, Fayon M, Choisy C, Nelson E, Harel S, Royer B, Villesuzanne C, Talbot A, Garrick D, Goodhardt M, Fermand J, Burbridge M, Arnulf B, Bories J. CAR‐T cells derived from multiple myeloma patients at diagnosis have improved cytotoxic functions compared to those produced at relapse or following daratumumab treatment. eJHaem 2022; 3:970-974. [PMID: 36051036 PMCID: PMC9421998 DOI: 10.1002/jha2.479] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 05/05/2022] [Accepted: 05/10/2022] [Indexed: 12/04/2022]
Abstract
Chimeric antigen receptor T cells (CAR‐T) have provided promising results in multiple myeloma (MM). However, many patients still relapse, pointing toward the need of improving this therapy. Here, we analyzed peripheral blood T cells from MM patients at different stages of the disease and investigated their phenotype and capacity to generate functional CAR‐T directed against CS1 or B Cell Maturation antigen. We found a decrease in naive T cells and elevated frequencies of exhaustion markers in T cells from treated MM patients. Interestingly, individuals treated with daratumumab display elevated ratios of central memory T cells. CAR‐T derived from patients at relapse show reduced in vitro expansion and cytotoxic capacities in response to MM cells compared to those produced at diagnosis. Of note, CAR‐T from daratumumab treated patients display intermediate defects. Reduced anti‐myeloma activity of CAR T cells from treated patients was also observed in a mouse model. Our findings suggest that T cell defects in MM patients, specifically during relapse, have a major impact on their capacity to generate efficient therapeutic CAR‐T. Selecting naive or central memory T cell subsets to generate therapeutic T cells could improve the CAR‐T therapy for MM.
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Affiliation(s)
| | | | - Maxime Fayon
- Université Paris Cité, INSERM, HIPI Paris France
| | | | | | - Stephanie Harel
- Université Paris Cité, INSERM, HIPI Paris France
- Immuno‐Hematology Saint‐Louis Hospital Paris France
| | - Bruno Royer
- Université Paris Cité, INSERM, HIPI Paris France
- Immuno‐Hematology Saint‐Louis Hospital Paris France
| | - Camille Villesuzanne
- Université Paris Cité, INSERM, HIPI Paris France
- Immuno‐Hematology Saint‐Louis Hospital Paris France
| | - Alexis Talbot
- Université Paris Cité, INSERM, HIPI Paris France
- Immuno‐Hematology Saint‐Louis Hospital Paris France
| | | | | | - Jean‐Paul Fermand
- Université Paris Cité, INSERM, HIPI Paris France
- Immuno‐Hematology Saint‐Louis Hospital Paris France
| | - Mike Burbridge
- Oncology Translational and Clinical Research Institut de Recherches Internationales Servier (IRIS) Suresnes France
| | - Bertrand Arnulf
- Université Paris Cité, INSERM, HIPI Paris France
- Immuno‐Hematology Saint‐Louis Hospital Paris France
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5
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UNEQUAL Crisis Study Group, Manchanda E, Marshall A, Erfani P, Olufadeji A, Otugo O, Nelson E, Jacquet G, Lupez K, Vogel L, Janneck L, Samuels-Kalow M. 263 UNderstanding EQUity in Crisis Standards of Care (the UNEQUAL Crisis Study). Ann Emerg Med 2021. [PMCID: PMC8536262 DOI: 10.1016/j.annemergmed.2021.09.276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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6
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Gainey M, Qu K, Garbern S, Barry M, Lee J, Nasrin S, Nelson E, Rosen R, Alam N, Schmid C, Levine A. 288 Assessing the Performance of Clinical Diagnostic Models for Dehydration among Patients With Cholera and Undernutrition in Bangladesh. Ann Emerg Med 2021. [DOI: 10.1016/j.annemergmed.2021.09.301] [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: 11/27/2022]
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7
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Hamoutene D, Hua K, Lacoursière-Roussel A, Page F, Baillie SM, Brager L, Salvo F, Coyle T, Chernoff K, Black M, Wong D, Nelson E, Bungay T, Gaspard D, Ryall E, Mckindsey CW, Sutherland TF. Assessing trace-elements as indicators of marine finfish aquaculture across three distinct Canadian coastal regions. Mar Pollut Bull 2021; 169:112557. [PMID: 34089964 DOI: 10.1016/j.marpolbul.2021.112557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 05/21/2021] [Accepted: 05/22/2021] [Indexed: 06/12/2023]
Abstract
Several trace-elements have been identified as indicators of finfish aquaculture organic enrichment. In this study, sediment sampling at finfish farms was completed as part of an Aquaculture Monitoring Program in three distinct Canadian regions. Despite diverse datasets, multivariate analyses show a consistent clustering of known direct (Cu and Zn) and indirect (Cd, Mo and U) tracers of aquaculture activities with sediment organic matter (OM) and/or total dissolved sulfides concentrations. OM content was also a predictor of Cu, Zn, Mo and U concentrations according to decision tree analyses. Distance from cages did not emerge as a strong driver of differences among sampling points; however, a tendency towards negative associations is clear especially for Zn. Enriched stations as determined after geochemical normalization were mostly localized within 150 m of net-pens. Selected trace-elements (in particular Zn) can be useful indicators of aquaculture organic enrichment in different ecosystems and valuable tools for monitoring programs.
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Affiliation(s)
- D Hamoutene
- St. Andrews Biological Station, Fisheries and Oceans Canada, St. Andrews, NB E5B 0E4, Canada.
| | - K Hua
- Aquaculture, Biotechnology and Aquatic Animal Health Science Branch, Fisheries and Oceans Canada, Ottawa, ON K1A 0E6, Canada
| | - A Lacoursière-Roussel
- St. Andrews Biological Station, Fisheries and Oceans Canada, St. Andrews, NB E5B 0E4, Canada
| | - F Page
- St. Andrews Biological Station, Fisheries and Oceans Canada, St. Andrews, NB E5B 0E4, Canada
| | - S M Baillie
- St. Andrews Biological Station, Fisheries and Oceans Canada, St. Andrews, NB E5B 0E4, Canada
| | - L Brager
- St. Andrews Biological Station, Fisheries and Oceans Canada, St. Andrews, NB E5B 0E4, Canada
| | - F Salvo
- Northwest Atlantic Fisheries Center, Fisheries and Oceans Canada, St. John's, NL A1C 5X1, Canada
| | - T Coyle
- Pacific Enterprise Science Center, Fisheries and Oceans Canada, Vancouver, BC V7V 1N6, Canada
| | - K Chernoff
- Pacific Enterprise Science Center, Fisheries and Oceans Canada, Vancouver, BC V7V 1N6, Canada
| | - M Black
- St. Andrews Biological Station, Fisheries and Oceans Canada, St. Andrews, NB E5B 0E4, Canada
| | - D Wong
- St. Andrews Biological Station, Fisheries and Oceans Canada, St. Andrews, NB E5B 0E4, Canada
| | - E Nelson
- St. Andrews Biological Station, Fisheries and Oceans Canada, St. Andrews, NB E5B 0E4, Canada
| | - T Bungay
- Northwest Atlantic Fisheries Center, Fisheries and Oceans Canada, St. John's, NL A1C 5X1, Canada
| | - D Gaspard
- Pacific Enterprise Science Center, Fisheries and Oceans Canada, Vancouver, BC V7V 1N6, Canada
| | - E Ryall
- Aquaculture, Biotechnology and Aquatic Animal Health Science Branch, Fisheries and Oceans Canada, Ottawa, ON K1A 0E6, Canada
| | - C W Mckindsey
- Institut Maurice Lamontagne, Fisheries and Oceans Canada, 850 Route de la mer, Mont-Joli, QUE G5H 3Z4, Canada
| | - T F Sutherland
- Pacific Enterprise Science Center, Fisheries and Oceans Canada, Vancouver, BC V7V 1N6, Canada
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8
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Fayon M, Martinez-Cingolani C, Abecassis A, Roders N, Nelson E, Choisy C, Talbot A, Bensussan A, Fermand JP, Arnulf B, Bories JC. Bi38-3 is a novel CD38/CD3 bispecific T-cell engager with low toxicity for the treatment of multiple myeloma. Haematologica 2021; 106:1193-1197. [PMID: 32675220 PMCID: PMC8018129 DOI: 10.3324/haematol.2019.242453] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Indexed: 12/20/2022] Open
Affiliation(s)
| | | | | | | | | | | | - Alexis Talbot
- Immunology-Haematology department, Hôpital Saint-Louis, AP-HP
| | | | | | - Bertrand Arnulf
- Immunology-Haematology department, Hôpital Saint-Louis, AP-HP
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9
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Alhaj Hussen K, Michonneau D, Biajoux V, Keita S, Dubouchet L, Nelson E, Setterblad N, Le Buanec H, Bouaziz JD, Guimiot F, Socié G, Canque B. CD4 +CD8 + T-Lymphocytes in Xenogeneic and Human Graft-versus-Host Disease. Front Immunol 2020; 11:579776. [PMID: 33329550 PMCID: PMC7732609 DOI: 10.3389/fimmu.2020.579776] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Accepted: 10/27/2020] [Indexed: 01/27/2023] Open
Abstract
Mechanisms driving acute graft-versus-host disease (aGVHD) onset in patients undergoing allogeneic hematopoietic stem cell transplantation (allo-HSCT) are still poorly understood. To provide a detailed characterization of tissue-infiltrating T lymphocytes (TL) and search for eventual site-specific specificities, we developed a xenogeneic model of aGVHD in immunodeficient mice. Phenotypic characterization of xenoreactive T lymphocytes (TL) in diseased mice disclosed a massive infiltration of GVHD target organs by an original CD4+CD8+ TL subset. Immunophenotypic and transcriptional profiling shows that CD4+CD8+ TL comprise a major PD1+CD62L−/+ transitional memory subset (>60%) characterized by low level expression of cytotoxicity-related transcripts. CD4+CD8+ TL produce high IL-10 and IL-13 levels, and low IL-2 and IFN-γ, suggestive of regulatory function. In vivo tracking of genetically labeled CD4+ or CD8+ TL subsequently found that CD4+CD8+ TL mainly originate from chronically activated cytotoxic TL (CTL). On the other hand, phenotypic profiling of CD3+ TL from blood, duodenum or rectal mucosa in a cohort of allo-HSCT patients failed to disclose abnormal expansion of CD4+CD8+ TL independent of aGVHD development. Collectively, our results show that acquisition of surface CD4 by xenoreactive CD8+ CTL is associated with functional diversion toward a regulatory phenotype, but rule out a central role of this subset in the pathogenesis of aGVHD in allo-HSCT patients.
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Affiliation(s)
- Kutaiba Alhaj Hussen
- INSERM U976, Université de Paris, École Pratique des Hautes Études/PSL Research University, Institut de Recherche Saint Louis, Paris, France.,Service d'Hématologie Biologique, Hôpital Tenon, Hôpitaux Universitaires de l'Est Parisien, Assistance Publique Hôpitaux de Paris, Paris, France
| | - David Michonneau
- INSERM U976, Université de Paris; Service d'hématologie-greffe, AP-HP, Hôpital Saint-Louis, Institut de Recherche Saint Louis, Paris, France
| | - Vincent Biajoux
- INSERM U976, Université de Paris, École Pratique des Hautes Études/PSL Research University, Institut de Recherche Saint Louis, Paris, France
| | - Seydou Keita
- INSERM U976, Université de Paris, École Pratique des Hautes Études/PSL Research University, Institut de Recherche Saint Louis, Paris, France
| | - Laetitia Dubouchet
- INSERM U976, Université de Paris; Service d'hématologie-greffe, AP-HP, Hôpital Saint-Louis, Institut de Recherche Saint Louis, Paris, France
| | - Elisabeth Nelson
- INSERM U976, Université de Paris, École Pratique des Hautes Études/PSL Research University, Institut de Recherche Saint Louis, Paris, France
| | - Niclas Setterblad
- Plateforme d'Imagerie et de Tri Cellulaire, Institut de Recherche Saint Louis, Paris, France
| | - Helene Le Buanec
- INSERM U976, Dermatology Department, Hôpital Saint-Louis, Institut de Recherche Saint Louis, Paris, France
| | - Jean-David Bouaziz
- INSERM U976, Dermatology Department, Hôpital Saint-Louis, Institut de Recherche Saint Louis, Paris, France
| | - Fabien Guimiot
- INSERM UMR 1141, Service de Biologie du Développement, Université de Paris, Hôpital Robert-Debré, AP-HP, Paris, France
| | - Gérard Socié
- INSERM U976, Université de Paris; Service d'hématologie-greffe, AP-HP, Hôpital Saint-Louis, Institut de Recherche Saint Louis, Paris, France
| | - Bruno Canque
- INSERM U976, Université de Paris, École Pratique des Hautes Études/PSL Research University, Institut de Recherche Saint Louis, Paris, France
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Polineni D, Lindwall J, Muther E, Durkin K, Ahrabi-Nejad C, Ruvalcaba E, Nelson E, White M, Bord E, Goodman A, Riekert K, Duncan C. P342 Development of a pilot trial of a novel tele-coaching intervention to improve treatment adherence in cystic fibrosis. J Cyst Fibros 2020. [DOI: 10.1016/s1569-1993(20)30671-8] [Citation(s) in RCA: 1] [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: 11/26/2022]
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11
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Papakostas G, Shelton R, Zajecka J, Rickels K, Clain A, Baer L, Schoenfeld D, Nelson E, Barbee J, Lydiard B, Mischoulon D, Alpert J, Zisook S, Fava M. L-methylfolate augmentation of selective serotonin reuptake inhibitors (SSRIS) for major depressive disorder: Results of two randomized, double-blind trials. Eur Psychiatry 2020. [DOI: 10.1016/s0924-9338(11)72299-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Abstract
IntroductionTwo randomized, controlled trials of L-methylfolate augmentation of SSRIs for major depressive disorder (MDD) were conducted using a novel study design (sequential parallel comparison design- SPCD).Objectives/aimsTo evaluate the efficacy of L-methylfolate augmentation using the Hamilton Depression Rating Scale.MethodsIn study one (TRD-1), 148 outpatients with SSRI-resistant MDD were enrolled in a 60-day, SPCD study, divided into two 30-day periods (phases 1 and 2). Patients were randomized 2:3:3 to receive L-methylfolate (7.5mg/d in phase 1, 15mg/d in phase 2), placebo in phase 1 followed by L-methylfolate 7.5mg/d in phase 2, or placebo for both phases. Study two (TRD-2) involved 75 patients and was identical in design to TRD-1 except for the dose of L-methylfolate (15mg only).ResultsIn the TRD-1 Study, L-methylfolate 7.5 mg/d was not found to be more effective than placebo. In phase 1 of the TRD-2 Study, 37% of patients on L-methylfolate 15mg/d responded and 18% of placebo patients responded, while in phase 2 among placebo non-responders, the response rates were 28% on L-methylfolate 15mg/d and 9.5% on placebo. When phases 1 and 2 were pooled according to the SPCD model, the difference in response rates was statistically significant in favor of L-methylfolate (p = 0.0399). The rates of spontaneously reported AEs and rates of study discontinuation appear r comparable between L-methylfolate and placebo in both studies. Rates of study discontinuation were also comparableConclusionsThese studies suggest that L-methylfolate 15 mg/d may be a safe and effective augmentation strategy for inadequate response to SSRIs.
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Ghimire S, Wongkuna S, Kumar R, Nelson E, Christopher-Hennings J, Scaria J. Genome sequence and description of Blautia brookingsii SG772 sp. nov., a novel bacterial species isolated from human faeces. New Microbes New Infect 2020; 34:100648. [PMID: 32055403 PMCID: PMC7005547 DOI: 10.1016/j.nmni.2019.100648] [Citation(s) in RCA: 4] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 12/02/2019] [Accepted: 12/27/2019] [Indexed: 02/08/2023] Open
Abstract
An anaerobic isolate SG772 belonging to the genus Blautia was isolated from a healthy human faecal sample. When compared using 16s rRNA sequence identity, SG772 showed only 94.46% similarity with its neighbour species Blautia stercoris. As strain SG772 showed both phenotypic and genomic differences from other members of the type species within the genus Blautia, we propose the designation of SG772 as novel species 'Blautia brookingsii SG772T'.
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Affiliation(s)
- S Ghimire
- Department of Veterinary & Biomedical Sciences, South Dakota State University, Brookings, SD, USA
| | - S Wongkuna
- Department of Veterinary & Biomedical Sciences, South Dakota State University, Brookings, SD, USA
| | - R Kumar
- Department of Veterinary & Biomedical Sciences, South Dakota State University, Brookings, SD, USA
| | - E Nelson
- Department of Veterinary & Biomedical Sciences, South Dakota State University, Brookings, SD, USA
| | - J Christopher-Hennings
- Department of Veterinary & Biomedical Sciences, South Dakota State University, Brookings, SD, USA
| | - J Scaria
- Department of Veterinary & Biomedical Sciences, South Dakota State University, Brookings, SD, USA
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13
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Zhang Y, Sharma A, Joo DJ, Nelson E, AbuRmilah A, Amiot BP, Boyer CJ, Alexander JS, Jalan-Sakrikar N, Martin J, Moreira R, Chowdhury SA, Smart M, Dietz AB, Nyberg SL, Heimbach JK, Huebert RC. Autologous Adipose Tissue-Derived Mesenchymal Stem Cells Introduced by Biliary Stents or Local Immersion in Porcine Bile Duct Anastomoses. Liver Transpl 2020; 26:100-112. [PMID: 31742878 PMCID: PMC7061488 DOI: 10.1002/lt.25682] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Accepted: 10/29/2019] [Indexed: 12/12/2022]
Abstract
Biliary complications (strictures and leaks) represent major limitations in living donor liver transplantation. Mesenchymal stem cells (MSCs) are a promising modality to prevent biliary complications because of immunosuppressive and angiogenic properties. Our goal was to evaluate the safety of adipose-derived MSC delivery to biliary anastomoses in a porcine model. Secondary objectives were defining the optimal method of delivery (intraluminal versus extraluminal) and to investigate MSC engraftment, angiogenesis, and fibrosis. Pigs were divided into 3 groups. Animals underwent adipose collection, MSC isolation, and expansion. Two weeks later, animals underwent bile duct transection, reanastomosis, and stent insertion. Group 1 received plastic stents wrapped in unseeded Vicryl mesh. Group 2 received stents wrapped in MSC-seeded mesh. Group 3 received unwrapped stents with the anastomosis immersed in an MSC suspension. Animals were killed 1 month after stent insertion when cholangiograms and biliary tissue were obtained. Serum was collected for liver biochemistries. Tissue was used for hematoxylin-eosin and trichrome staining and immunohistochemistry for MSC markers (CD44 and CD34) and for a marker of neoangiogenesis (CD31). There were no intraoperative complications. One pig died on postoperative day 3 due to acute cholangitis. All others recovered without complications. Cholangiography demonstrated no biliary leaks and minimal luminal narrowing. Surviving animals exhibited no symptoms, abnormal liver biochemistries, or clinically significant biliary stricturing. Group 3 showed significantly greater CD44 and CD34 staining, indicating MSC engraftment. Fibrosis was reduced at the anastomotic site in group 3 based on trichrome stain. CD31 staining of group 3 was more pronounced, supporting enhanced neoangiogenesis. In conclusion, adipose-derived MSCs were safely applied to biliary anastomoses. MSCs were locally engrafted within the bile duct and may have beneficial effects in terms of fibrosis and angiogenesis.
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Affiliation(s)
- Y Zhang
- Department of Surgery, Mayo Clinic and Foundation, Rochester, MN;,Chongqing University Cancer Hospital, Chongqing, China
| | - A Sharma
- Department of Surgery, Mayo Clinic and Foundation, Rochester, MN
| | - DJ Joo
- Department of Surgery, Mayo Clinic and Foundation, Rochester, MN;,Department of Surgery, Yonsei University, Seoul, Korea
| | - E Nelson
- Department of Surgery, Mayo Clinic and Foundation, Rochester, MN
| | - A AbuRmilah
- Department of Surgery, Mayo Clinic and Foundation, Rochester, MN
| | - BP Amiot
- Department of Surgery, Mayo Clinic and Foundation, Rochester, MN
| | - CJ Boyer
- Department of Molecular and Cellular Physiology, Louisiana State University Health Sciences Center, Shreveport, LA
| | - JS Alexander
- Department of Molecular and Cellular Physiology, Louisiana State University Health Sciences Center, Shreveport, LA
| | - N Jalan-Sakrikar
- Gastroenterology Research Unit, Mayo Clinic and Foundation, Rochester, MN
| | - J Martin
- Division of Gastroenterology and Hepatology, Mayo Clinic and Foundation, Rochester, MN
| | - R Moreira
- Department of Laboratory Medicine and Pathology, Mayo Clinic and Foundation, Rochester, MN
| | - SA Chowdhury
- Gastroenterology Research Unit, Mayo Clinic and Foundation, Rochester, MN
| | - M Smart
- Department of Laboratory Medicine and Pathology, Mayo Clinic and Foundation, Rochester, MN
| | - AB Dietz
- Department of Laboratory Medicine and Pathology, Mayo Clinic and Foundation, Rochester, MN
| | - SL Nyberg
- Department of Surgery, Mayo Clinic and Foundation, Rochester, MN;,William J. von Liebig Center for Transplantation and Clinical Regeneration, Mayo Clinic and Foundation, Rochester, MN
| | - JK Heimbach
- Department of Surgery, Mayo Clinic and Foundation, Rochester, MN;,William J. von Liebig Center for Transplantation and Clinical Regeneration, Mayo Clinic and Foundation, Rochester, MN
| | - RC Huebert
- Gastroenterology Research Unit, Mayo Clinic and Foundation, Rochester, MN.,Division of Gastroenterology and Hepatology, Mayo Clinic and Foundation, Rochester, MN.,William J. von Liebig Center for Transplantation and Clinical Regeneration, Mayo Clinic and Foundation, Rochester, MN
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Sabadosa K, Gifford A, van Citters A, Nelson E. P083 Coproducing cystic fibrosis care: a Registry-enabled learning health system. J Cyst Fibros 2019. [DOI: 10.1016/s1569-1993(19)30377-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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15
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Nedland H, Wollman J, Sreenivasan C, Quast M, Singrey A, Fawcett L, Christopher-Hennings J, Nelson E, Kaushik RS, Wang D, Li F. Serological evidence for the co-circulation of two lineages of influenza D viruses in equine populations of the Midwest United States. Zoonoses Public Health 2017; 65:e148-e154. [PMID: 29139222 DOI: 10.1111/zph.12423] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Indexed: 12/15/2022]
Abstract
Influenza D virus (IDV) is a newly described influenza type of the Orthomyxoviridae virus family that was first isolated from diseased swine in 2011 and has subsequently been detected in cattle around the world in 2014. In addition, serological evidence for IDV infection in humans has been recently established. Despite all the progress, the full range of susceptible hosts for this novel virus has yet to be determined, but includes swine, bovine, small ruminants and human. This study was designed to determine if equine is a possible host to this newly emerging influenza virus. Three hundred and sixty-four equine serum samples were collected in 2015 from 141 farms within the Midwestern United States. Serum samples were examined using hemagglutination inhibition (HI) assay against two established IDV lineages (D/OK and D/660) and one IDV-related human ICV lineage (C/JHB). Results of this study showed 44 (44 of 364, 12%) samples positive for antibodies against D/OK, 39 (39 of 364, 11%) samples positive for antibodies against D/660, and 41 (41 of 364, 11%) samples positive for antibodies against C/JHB. A subset of these samples was further confirmed via microtitre neutralization (MN) assay. Our data demonstrated that horses are susceptible to two lineages of IDV, and that these viruses were present in equine populations throughout multiple Midwestern states of the United States. These findings continue to support the need for further surveillance of IDV viruses in agricultural species to work towards a better understanding of the full host range and natural reservoirs of influenza D virus.
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Affiliation(s)
- H Nedland
- Department of Biology and Microbiology, South Dakota State University, Brookings, SD, USA
| | - J Wollman
- Department of Biology and Microbiology, South Dakota State University, Brookings, SD, USA
| | - C Sreenivasan
- Department of Biology and Microbiology, South Dakota State University, Brookings, SD, USA
| | - M Quast
- Department of Biology and Microbiology, South Dakota State University, Brookings, SD, USA
| | - A Singrey
- Department of Veterinary and Biomedical Sciences, South Dakota State University, Brookings, SD, USA
| | - L Fawcett
- Department of Veterinary and Biomedical Sciences, South Dakota State University, Brookings, SD, USA
| | - J Christopher-Hennings
- Department of Veterinary and Biomedical Sciences, South Dakota State University, Brookings, SD, USA
| | - E Nelson
- Department of Veterinary and Biomedical Sciences, South Dakota State University, Brookings, SD, USA
| | - R S Kaushik
- Department of Biology and Microbiology, South Dakota State University, Brookings, SD, USA.,Department of Veterinary and Biomedical Sciences, South Dakota State University, Brookings, SD, USA
| | - D Wang
- Department of Biology and Microbiology, South Dakota State University, Brookings, SD, USA.,BioSNTR, South Dakota State University, Brookings, SD, USA
| | - F Li
- Department of Biology and Microbiology, South Dakota State University, Brookings, SD, USA.,Department of Veterinary and Biomedical Sciences, South Dakota State University, Brookings, SD, USA.,BioSNTR, South Dakota State University, Brookings, SD, USA
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16
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Alhaj Hussen K, Vu Manh TP, Guimiot F, Nelson E, Chabaane E, Delord M, Barbier M, Berthault C, Dulphy N, Alberdi AJ, Burlen-Defranoux O, Socié G, Bories JC, Larghero J, Vanneaux V, Verhoeyen E, Wirth T, Dalod M, Gluckman JC, Cumano A, Canque B. Molecular and Functional Characterization of Lymphoid Progenitor Subsets Reveals a Bipartite Architecture of Human Lymphopoiesis. Immunity 2017; 47:680-696.e8. [DOI: 10.1016/j.immuni.2017.09.009] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Revised: 04/06/2017] [Accepted: 09/17/2017] [Indexed: 12/31/2022]
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17
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Cohen AL, Factor RE, Mooney K, Wade M, Serpico V, Salama M, Nelson E, Porretta J, Matsen C, Ostrander E, Bernard P, Boucher K, Neumayer L. Abstract P2-10-05: PowerPIINC trial: Changes in tumor proliferation index and quality of life with 7 days of preoperative tamoxifen. Cancer Res 2017. [DOI: 10.1158/1538-7445.sabcs16-p2-10-05] [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
BACKGROUND: A decrease in Ki67 has been shown to be a predictor of response to tamoxifen. Previous trials have shown a decreased Ki67 proliferation index in breast tumors with as little as 2 weeks of preoperative tamoxifen. However, shortening the preoperative treatment time in window of opportunity studies increases patient acceptance for trial participation. The POWERPIINC trial examined the effect of 7 days of preoperative tamoxifen on breast tumor proliferation and patient symptoms.
METHODS: Adult women with untreated stage I or II invasive breast cancer that was ER positive (>1%) planning on breast surgery with no contraindications to tamoxifen were enrolled. Women received 20mg of tamoxifen for 7 days up to the day of surgery and for 14 days afterwards. Proliferation was assessed by Ki67 immunohistochemistry before and after 7 days of tamoxifen. The proliferation genes from the PAM50 were also assessed by RT-PCR. Symptoms and QOL were assessed by the FACT-ES, MENQoL, and BMQ.
RESULTS: 52 women were enrolled, and 44 were evaluable for Ki67. The median age was 58.5 years, and the median tumor diameter was 1.2cm. Most women (73%) were post-menopausal. Most tumors were PR positive (88%). Only 8% of tumors were HER2-positive. The Ki67 decreased by a geometric mean of 40% (95% CI 29%-63%), and 73% (95% CI 57%-85%) of women had tumors with decreased proliferation after 7 days of tamoxifen (p=0.0001 by paired t-test). No correlation was seen between the change in Ki-67 and change in FACT-ES or MENQoL scores. Women reported minimal to no bother from psychosocial or physical symptoms at baseline or on the day of surgery. Expression level of individual proliferation genes did not change after 7 days of tamoxifen.
CONCLUSION: Seven days of tamoxifen showed a similar relative decrease in the Ki67 proliferation index as that reported for longer courses. Therefore, short window of opportunity trials can be informative.
Citation Format: Cohen AL, Factor RE, Mooney K, Wade M, Serpico V, Salama M, Nelson E, Porretta J, Matsen C, Ostrander E, Bernard P, Boucher K, Neumayer L. PowerPIINC trial: Changes in tumor proliferation index and quality of life with 7 days of preoperative tamoxifen [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 P2-10-05.
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Affiliation(s)
- AL Cohen
- University of Utah, Salt Lake City, UT; University of Arizona, Tucson, AZ
| | - RE Factor
- University of Utah, Salt Lake City, UT; University of Arizona, Tucson, AZ
| | - K Mooney
- University of Utah, Salt Lake City, UT; University of Arizona, Tucson, AZ
| | - M Wade
- University of Utah, Salt Lake City, UT; University of Arizona, Tucson, AZ
| | - V Serpico
- University of Utah, Salt Lake City, UT; University of Arizona, Tucson, AZ
| | - M Salama
- University of Utah, Salt Lake City, UT; University of Arizona, Tucson, AZ
| | - E Nelson
- University of Utah, Salt Lake City, UT; University of Arizona, Tucson, AZ
| | - J Porretta
- University of Utah, Salt Lake City, UT; University of Arizona, Tucson, AZ
| | - C Matsen
- University of Utah, Salt Lake City, UT; University of Arizona, Tucson, AZ
| | - E Ostrander
- University of Utah, Salt Lake City, UT; University of Arizona, Tucson, AZ
| | - P Bernard
- University of Utah, Salt Lake City, UT; University of Arizona, Tucson, AZ
| | - K Boucher
- University of Utah, Salt Lake City, UT; University of Arizona, Tucson, AZ
| | - L Neumayer
- University of Utah, Salt Lake City, UT; University of Arizona, Tucson, AZ
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Patel D, Turner T, Nelson E, Kozin A, Ruiz G, Langland J. TREATMENT OF HERPES VIRUS-ASSOCIATED LESIONS USING A SYNERGISTIC BOTANICAL BLEND. Oral Surg Oral Med Oral Pathol Oral Radiol 2016. [DOI: 10.1016/j.oooo.2016.06.046] [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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19
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De Leeuw RA, Westerman M, Nelson E, Ket JCF, Scheele F. Quality specifications in postgraduate medical e-learning: an integrative literature review leading to a postgraduate medical e-learning model. BMC Med Educ 2016; 16:168. [PMID: 27390843 PMCID: PMC4939034 DOI: 10.1186/s12909-016-0700-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [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: 07/17/2015] [Accepted: 06/11/2016] [Indexed: 05/10/2023]
Abstract
BACKGROUND E-learning is driving major shifts in medical education. Prioritizing learning theories and quality models improves the success of e-learning programs. Although many e-learning quality standards are available, few are focused on postgraduate medical education. METHODS We conducted an integrative review of the current postgraduate medical e-learning literature to identify quality specifications. The literature was thematically organized into a working model. RESULTS Unique quality specifications (n = 72) were consolidated and re-organized into a six-domain model that we called the Postgraduate Medical E-learning Model (Postgraduate ME Model). This model was partially based on the ISO-19796 standard, and drew on cognitive load multimedia principles. The domains of the model are preparation, software design and system specifications, communication, content, assessment, and maintenance. CONCLUSION This review clarified the current state of postgraduate medical e-learning standards and specifications. It also synthesized these specifications into a single working model. To validate our findings, the next-steps include testing the Postgraduate ME Model in controlled e-learning settings.
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Affiliation(s)
- R. A. De Leeuw
- />Athena Institute for Trans-disciplinary Research, VU University Amsterdam, De Boelelaan 1118, Amsterdam, 1081 HZ The Netherlands
| | - M. Westerman
- />VUmc, School of Medical Sciences, Amsterdam, The Netherlands
| | - E. Nelson
- />Division of Pediatric Infectious Diseases, Department of Pediatrics, Stanford University School of Medicine, Stanford, USA
| | - J. C. F. Ket
- />VU University Amsterdam, University Library, Amsterdam, The Netherlands
| | - F. Scheele
- />Athena Institute for Trans-disciplinary Research, VU University Amsterdam, De Boelelaan 1118, Amsterdam, 1081 HZ The Netherlands
- />VUmc, School of Medical Sciences, Amsterdam, The Netherlands
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Rae D, Frich J, Roxburgh R, Nelson E, Giuliano J. A10 Health Care Delivery In Huntington's Disease: An Exploratory Survey. J Neurol Psychiatry 2014. [DOI: 10.1136/jnnp-2014-309032.10] [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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Granja T, Köhler D, Mirakaj V, Nelson E, König K, Rosenberger P. Crucial role of Plexin C1 for pulmonary inflammation and survival during lung injury. Mucosal Immunol 2014; 7:879-91. [PMID: 24345803 DOI: 10.1038/mi.2013.104] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Revised: 10/25/2013] [Accepted: 10/26/2013] [Indexed: 02/04/2023]
Abstract
Acute pulmonary inflammation during lung injury is initiated by the migration of neutrophils into the alveolar space. The severity of these inflammatory changes within the pulmonary tissue determines the severity of lung injury and ultimately patient outcome. Recent work has demonstrated that the guidance protein Semaphorin 7A propagates the infiltration of neutrophils into an hypoxic tissue site, yet the role of its target receptor Plexin C1 (PLXNC1) during lung injury is to date unknown. We demonstrate here that PLXNC1(+) neutrophils are present within the alveolar space and that PLXNC1 is induced in vitro and in vivo during lung injury. In a model of high-pressure ventilation PLXNC1(-/-) animals show decreased signs of alveolar inflammation and improved survival compared with wild-type controls. Studies employing chimeric animals identified the hematopoietic expression of PLXNC1 to be of crucial importance for the observed results. Functional inhibition of PLXNC1 resulted in improved survival and ameliorated the signs of inflammation within the lung. Furthermore, the injection of a peptide binding to PLXNC1 resulted in improved survival and attenuated pulmonary inflammation. As such we demonstrate here, that previously unknown PLXNC1 holds significant importance for degree of pulmonary inflammation and determines outcome during experimental lung injury.
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Affiliation(s)
- T Granja
- Department of Anesthesiology and Intensive Care Medicine, Tübingen University Hospital; Eberhard-Karls University, Tübingen, Germany
| | - D Köhler
- Department of Anesthesiology and Intensive Care Medicine, Tübingen University Hospital; Eberhard-Karls University, Tübingen, Germany
| | - V Mirakaj
- Department of Anesthesiology and Intensive Care Medicine, Tübingen University Hospital; Eberhard-Karls University, Tübingen, Germany
| | - E Nelson
- Department of Anesthesiology and Perioperative Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - K König
- Department of Anesthesiology and Intensive Care Medicine, Tübingen University Hospital; Eberhard-Karls University, Tübingen, Germany
| | - P Rosenberger
- Department of Anesthesiology and Intensive Care Medicine, Tübingen University Hospital; Eberhard-Karls University, Tübingen, Germany
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Blanchard A, Lyons M, Nelson E. What is past is prologue: Pre-natal testosterone and parental bonding predicts adult attachment styles. Personality and Individual Differences 2014. [DOI: 10.1016/j.paid.2013.07.140] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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23
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Neumayer L, Mooney K, Factor R, Salama M, Cohen A, Serpico V, Fletcher D, Bernard P, Nelson E, McGreevy J. Abstract OT3-2-02: PreOperative window of endocrine therapy provides information to increase compliance: POWER PIINC: A feasibility study. Cancer Res 2013. [DOI: 10.1158/0008-5472.sabcs13-ot3-2-02] [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
Background: The addition of systemic therapy to the surgical treatment of breast cancer has improved survival of patients. A mainstay of systemic therapy in the setting of hormone receptor positive breast cancer is endocrine therapy. Despite the known advantages, the compliance with short and long term systemic endocrine therapy is less than ideal. Several studies report significant rates of non-compliance with endocrine therapy, either in patients never starting the medication or not completing the recommended multi-year course. It is estimated that as many as 10% of patients per year discontinue their therapy. We wondered why women would forgo such an important part of their treatment and how we might intervene to improve compliance. Using information gleaned from POWER PIINC, we hope to design a behavioral intervention study to see if the patient knowing her tumor's preoperative response to endocrine therapy will improve long term compliance. In order to do such a study we would need to define the minimal length of preoperative endocrine therapy needed to detect measurable changes in the tumor.
After 14 days of endocrine therapy, significant decreases in Ki67 can be seen in most hormone sensitive breast cancers. In fact two current studies are using this information (POETIC and ADAPT trials). Both of these trials are being conducted outside of the U.S. where operative therapy does not typically occur within a week or two of seeing the surgeon. POWER PIINC is a feasibility study to determine if we can detect changes in Ki67 with only 7 days of therapy. The results of POWER PIINC will inform the behavioral intervention trial.
Trial Design: This is a prospective, single-arm feasibility study. Participants take tamoxifen for 7 days prior to surgery. Ki67 is measured pre (core biopsy) and post (surgical specimen) tamoxifen.
Eligibility critieria: Non-pregnant women age 18 or older with a hormone positive (>1% ER or PR) clinical Stage 1 or 2 breast cancer who are candidates for surgical therapy of their breast cancer. No concurrent CYP2D6 inhibitors or other contraindications to tamoxifen.
Specific Aims:
Primary Objective:
Demonstrate a significant reduction in Ki67 expression in tumors with 7 days of pre-surgical tamoxifen.
Secondary Objectives:
- Evaluate symptom patterns from baseline through 18 months of follow-up (presence, severity, and bother)
-Evaluate 18-month endocrine therapy adherence
-Evaluate change in attitude regarding endocrine therapy
-Evaluate correlation between changes in Ki67 expression and symptom scores
-Evaluate additional changes in proliferative markers (subset of PAM 50)
Statistical Methods: A one-sample t-test will be applied to the log-ratio of Ki67 at resection to pre therapy. If this ratio is not normally distributed we will use a non-parametric Wilcoxon test. Secondary objectives will be analyzed using a variety of appropriate statistical tests.
Accrual: Target accrual is 52 patients over 18 months. We opened this study in August of 2012. To date (9 months) we have accrued 23 patients.
Citation Information: Cancer Res 2013;73(24 Suppl): Abstract nr OT3-2-02.
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Affiliation(s)
- L Neumayer
- Huntsman Cancer Institute, Salt Lake City, UT
| | - K Mooney
- Huntsman Cancer Institute, Salt Lake City, UT
| | - R Factor
- Huntsman Cancer Institute, Salt Lake City, UT
| | - M Salama
- Huntsman Cancer Institute, Salt Lake City, UT
| | - A Cohen
- Huntsman Cancer Institute, Salt Lake City, UT
| | - V Serpico
- Huntsman Cancer Institute, Salt Lake City, UT
| | - D Fletcher
- Huntsman Cancer Institute, Salt Lake City, UT
| | - P Bernard
- Huntsman Cancer Institute, Salt Lake City, UT
| | - E Nelson
- Huntsman Cancer Institute, Salt Lake City, UT
| | - J McGreevy
- Huntsman Cancer Institute, Salt Lake City, UT
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Abdullah A, Omar AN, Mulcahy R, Clapp A, Tullo E, Carrick-Sen D, Newton J, Hirst B, Krishnaswami V, Foster A, Vahidassr D, Chavan T, Matthew A, Trolan CP, Steel C, Ellis G, Ahearn DJ, Lotha K, Shukla P, Bourne DR, Mathur A, Musarrat K, Patel A, Nicholson G, Nelson E, McNicholl S, McKee H, Cuthbertson J, Nelson E, Nicholson G, McNicholl S, McKee H, Cuthbertson J, Lunt E, Lee S, Okeke J, Daniel J, Naseem A, Ramakrishna S, Singh I, Barker JR, Weatherburn AJ, Thornton L, Daniel J, Okeke J, Holly C, Jones J, Varanasi A, Verma A, Singh I, Foster JAH, Carmichael C, Cawston C, Homewood S, Leitch M, Martin J, McDicken J, Lonnen J, Bishop-Miller J, Beishon LC, Harrison JK, Conroy SP, Gladman JRF, Sim J, Byrne F, Currie J, Ollman S, Brown S, Wilkinson M, Manoj A, Hussain F, Druhan A, Thompson M, Tsang J, Soh J, Offiah C, Coughlan T, O'Brien P, McCabe DJH, Murphy S, McManus J, O'Neill D, Collins DR, Warburton K, Maini N, Cunnington AL, Mathew P, Hoyles K, Lythgoe M, Brewer H, Western-Price J, Colquhoun K, Ramdoo K, Bowen J, Dale OT, Corbridge R, Chatterjee A, Gosney MA, Richardson L, Daunt L, Ali A, Harwood R, Beveridge LA, Harper J, Williamson LD, Bowen JST, Gosney MA, Wentworth L, Wardle K, Ruddlesdin J, Baht S, Roberts N, Corrado O, Morell J, Baker P, Whiller N, Wilkinson I, Barber M, Maclean A, Frieslick J, Reoch A, Thompson M, Tsang J, McSorley A, Crawford A, Sarup S, Niruban A, Edwards JD, Bailey SJ, May HM, Mathieson P, Jones H, Ray R, Prettyman R, Gibson R, Heaney A, Hull K, Manku B, Bellary S, Ninan S, Chhokar G, Sweeney D, Nivatongs W, Wong SY, Aung T, Kalsi T, Babic-Illman G, Harari D, Aljaizani M, Pattison AT, Pattison AT, Aljaizani M, Fox J, Reilly S, Chauhan V, Azad M, Youde J, Lagan J, Cooper H, Komrower D, Price V, von Stempel CB, Gilbert B, Bouwmeester N, Jones HW, Win T, Weekes C, Hodgkinson R, Walker S, Le Ball K, Muir ZN. Clinical effectiveness. Age Ageing 2013. [DOI: 10.1093/ageing/aft096] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Nelson E, Watier N, Collin C, Boutet I. Are Holistic and Configural Processing Distict? A Within-Subjects Comparison of Four Common Face Processing Tasks. J Vis 2013. [DOI: 10.1167/13.9.100] [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: 11/24/2022] Open
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Maharzi N, Parietti V, Nelson E, Denti S, Robledo-Sarmiento M, Setterblad N, Parcelier A, Pla M, Sigaux F, Gluckman JC, Canque B. Identification of TMEM131L as a novel regulator of thymocyte proliferation in humans. J Immunol 2013; 190:6187-97. [PMID: 23690469 DOI: 10.4049/jimmunol.1300400] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
In this study, we identify transmembrane protein 131-like (TMEM131L) as a novel regulator of thymocyte proliferation and demonstrate that it corresponds to a not as yet reported inhibitor of Wnt signaling. Short hairpin RNA-mediated silencing of TMEM131L in human CD34(+) hematopoietic progenitors, which were then grafted in NOD-SCID/IL-2rγ(null) mice, resulted in both thymocyte hyperproliferation and multiple pre- and post-β-selection intrathymic developmental defects. Consistent with deregulated Wnt signaling, TMEM131L-deficient thymocytes expressed Wnt target genes at abnormally high levels, and they displayed both constitutive phosphorylation of Wnt coreceptor LRP6 and β-catenin intranuclear accumulation. Using T cell factor reporter assays, we found that membrane-associated TMEM131L inhibited canonical Wnt/β-catenin signaling at the LRP6 coreceptor level. Whereas membrane-associated TMEM131L did not affect LRP6 expression under basal conditions, it triggered lysosome-dependent degradation of its active phosphorylated form following Wnt activation. Genetic mapping showed that phosphorylated LRP6 degradation did not depend on TMEM131L cytoplasmic part but rather on a conserved extracellular domain proximal to the membrane. Collectively, these data indicate that, during thymopoiesis, stage-specific surface translocation of TMEM131L may regulate immature single-positive thymocyte proliferation arrest by acting through mixed Wnt-dependent and -independent mechanisms.
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Affiliation(s)
- Nesrine Maharzi
- Laboratoire Développement du Système Immunitaire de l'Ecole Pratique des Hautes Etudes, Institut Universitaire d'Hématologie, Hôpital Saint-Louis, 75571 Paris, France
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Parietti V, Nelson E, Telliam G, Le Noir S, Pla M, Delord M, Vanneaux V, Mohtashami M, Macintyre EA, Gluckman JC, Asnafi V, Zúñiga-Pflücker JC, Larghero J, Canque B. Dynamics of Human Prothymocytes and Xenogeneic Thymopoiesis in Hematopoietic Stem Cell-Engrafted Nonobese Diabetic-SCID/IL-2rγnullMice. J I 2012; 189:1648-60. [DOI: 10.4049/jimmunol.1201251] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Zamudio J, Schmidt P, Guttman M, Nutt J, Siderowf A, Nelson E. Variation of Patient-Reported Outcomes (PDQ-39) in a Cross-Sectional Analysis of the NPF QII- Research Registry (P06.066). Neurology 2012. [DOI: 10.1212/wnl.78.1_meetingabstracts.p06.066] [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: 11/15/2022] Open
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Radeloff VC, Nelson E, Plantinga AJ, Lewis DJ, Helmers D, Lawler JJ, Withey JC, Beaudry F, Martinuzzi S, Butsic V, Lonsdorf E, White D, Polasky S. Economic-based projections of future land use in the conterminous United States under alternative policy scenarios. Ecol Appl 2012; 22:1036-1049. [PMID: 22645830 DOI: 10.1890/11-0306.1] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Land-use change significantly contributes to biodiversity loss, invasive species spread, changes in biogeochemical cycles, and the loss of ecosystem services. Planning for a sustainable future requires a thorough understanding of expected land use at the fine spatial scales relevant for modeling many ecological processes and at dimensions appropriate for regional or national-level policy making. Our goal was to construct and parameterize an econometric model of land-use change to project future land use to the year 2051 at a fine spatial scale across the conterminous United States under several alternative land-use policy scenarios. We parameterized the econometric model of land-use change with the National Resource Inventory (NRI) 1992 and 1997 land-use data for 844 000 sample points. Land-use transitions were estimated for five land-use classes (cropland, pasture, range, forest, and urban). We predicted land-use change under four scenarios: business-as-usual, afforestation, removal of agricultural subsidies, and increased urban rents. Our results for the business-as-usual scenario showed widespread changes in land use, affecting 36% of the land area of the conterminous United States, with large increases in urban land (79%) and forest (7%), and declines in cropland (-16%) and pasture (-13%). Areas with particularly high rates of land-use change included the larger Chicago area, parts of the Pacific Northwest, and the Central Valley of California. However, while land-use change was substantial, differences in results among the four scenarios were relatively minor. The only scenario that was markedly different was the afforestation scenario, which resulted in an increase of forest area that was twice as high as the business-as-usual scenario. Land-use policies can affect trends, but only so much. The basic economic and demographic factors shaping land-use changes in the United States are powerful, and even fairly dramatic policy changes, showed only moderate deviations from the business-as-usual scenario. Given the magnitude of predicted land-use change, any attempts to identify a sustainable future or to predict the effects of climate change will have to take likely land-use changes into account. Econometric models that can simulate land-use change for broad areas with fine resolution are necessary to predict trends in ecosystem service provision and biodiversity persistence.
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Affiliation(s)
- V C Radeloff
- Department of Forest and Wildlife Ecology, University of Wisconsin, 1630 Linden Drive, Madison, Wisconsin 53706, USA.
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Jacob T, Sher K, Bucholz K, True W, Sirevaag E, Rohrbaugh J, Nelson E, Neuman R, Todd R, Slutske W, Whitfield J, Kirk K, Martin N, Madden P, Heath A. An Integrative Approach for Studying the Etiology of Alcoholism and Other Addictions. ACTA ACUST UNITED AC 2012. [DOI: 10.1375/twin.4.2.103] [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: 11/05/2022]
Abstract
AbstractStudies of alcoholism etiology often focus on genetic or psy-chosocial approaches, but not both. Greater understanding of the etiology of alcohol, tobacco and other addictions will come from integration of these research traditions. A research approach is outlined to test three models for the etiology of addictions — behavioral undercontrol, pharmacologic vulnerability, negative affect regulation — addressing key questions including (i) mediators of genetic effects, (ii) genotype-environment correlation effects, (iii) genotype x environment interaction effects, (iv) the developmental unfolding of genetic and environmental effects, (v) subtyping including identification of distinct trajectories of substance involvement, (vi) identification of individual genes that contribute to risk, and (vii) the consequences of excessive use. By using coordinated research designs, including prospective assessment of adolescent twins and their siblings and parents; of adult substance dependent and control twins and their MZ and DZ cotwins, the spouses of these pairs, and their adolescent offspring; and of regular families; by selecting for gene-mapping approaches sibships screened for extreme concordance or discordance on quantitative indices of substance use; and by using experimental (drug challenge) as well as survey approaches, a number of key questions concerning addiction etiology can be addressed. We discuss complementary strengths and weaknesses of different sampling strategies, as well as methods to implement such an integrated approach illustrated for the study of alcoholism etiology. A coordinated program of twin and family studies will allow a comprehensive dissection of the interplay of genetic and environmental risk-factors in the etiology of alcoholism and other addictions.
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Weisberg E, Ray A, Barrett R, Nelson E, Christie AL, Porter D, Straub C, Zawel L, Daley JF, Lazo-Kallanian S, Stone R, Galinsky I, Frank D, Kung AL, Griffin JD. Smac mimetics: implications for enhancement of targeted therapies in leukemia. Leukemia 2010; 24:2100-9. [PMID: 20844561 DOI: 10.1038/leu.2010.212] [Citation(s) in RCA: 79] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Drug resistance is a growing concern with clinical use of tyrosine kinase inhibitors. Utilizing in vitro models of intrinsic drug resistance and stromal-mediated chemoresistance, as well as functional mouse models of progressive and residual disease, we attempted to develop a potential therapeutic approach designed to suppress leukemia recurrence following treatment with selective kinase inhibitors. The novel IAP inhibitor, LCL161, [corrected] was observed to potentiate the effects of tyrosine kinase inhibition against leukemic disease both in the absence and presence of a stromal-protected [corrected] environment. LCL161 enhanced the proapoptotic effects of nilotinib and PKC412, against leukemic disease in vitro and potentiated the activity of both kinase inhibitors against leukemic disease in vivo. In addition, LCL161 synergized in vivo with nilotinib to reduce leukemia burden significantly below the baseline level suppression exhibited by a moderate-to-high dose of nilotinib. Finally, LCL161 displayed antiproliferative effects against cells characterized by intrinsic resistance to tyrosine kinase inhibitors as a result of expression of point mutations in the protein targets of drug inhibition. These results support the idea of using IAP inhibitors in conjunction with targeted tyrosine kinase inhibition to override drug resistance and suppress or eradicate residual disease.
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Affiliation(s)
- E Weisberg
- Department of Medical Oncology/Hematologic Neoplasia, Dana Farber Cancer Institute, Boston, MA 02115, USA.
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Nawarathna D, Chang R, Nelson E, Wickramasinghe HK. Targeted messenger RNA profiling of transfected breast cancer gene in a living cell. Anal Biochem 2010; 408:342-4. [PMID: 20723536 DOI: 10.1016/j.ab.2010.08.014] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2010] [Revised: 08/06/2010] [Accepted: 08/11/2010] [Indexed: 10/19/2022]
Abstract
Selective messenger RNA (mRNA) profiling of transfected breast cancer gene expression in a living cell is demonstrated. Atomic force microscope (AFM) probe tips are structurally modified to create a dielectrophoretic force that attracts mRNA molecules within the cell nucleus. The tip end is chemically modified to hybridize only to the target mRNA from a pool of molecules within the nucleus. We successfully combined this scheme with standard assay techniques to develop an assay technology that can be used for early disease detection and basic studies in cell biology.
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Affiliation(s)
- D Nawarathna
- Department of Electrical Engineering and Computer Science, University of California, Irvine, Irvine, CA 92697, USA
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Abstract
Crystalline aggregates of strain MM virus occur in polymorphonuclear leukocytes in association with osmiophilic granular structures which are occasionally membrane-bound. This suggests either a phagocytosis and segregation of virus by leukocytes, analogous to the disposition of bacteria by leukocytes, or a utilization of the leukocyte by the virus as a host cell for virus replication.
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Andrieu S, Barberger-Gateau P, Raffaitin C, Berr C, Tzourio C, Dartigues JF, Gin H, Fitten LJ, Ortiz F, Fairbanks L, Bartzokis G, Lu P, Ringman J, Heyn PC, Locher JL, Salvà A, Andrieu S, Fernández E, Vellas B, van de Rest O, Geleijnse JM, Kok FJ, van Staveren WA, Beekman ATF, Hoefnagels WHL, de Groot CPGM, Angevaren M, Aufdemkampe G, Verhaar HJJ, Aleman A, Vannees L, Arkin S, Florez H, Gerstein H, Sheridan P, Bosch J, Goldberg R, Kaspar KM, Drawert SM, Marcus RL, Kidde J, Dibble L, Addison O, LaStayo PC, Scarmeas N, Stern Y, Schupf N, Luchsinger JA, Sharkey JR, Laditka JN, Laditka SB, Liu R, Hochhalter A, Robare JF, Türner N, Judge M, Foster TC, Erdos B, Cudykier I, Scarpace PJ, Weiss LA, Bergstrom J, Kritz-Silverstein D, Barrett-Connor E, Yurko-Mauro K, Nelson E, Quinn J, Sattler FR, Castaneda-Sceppa C, Binder EF, Schroeder ET, Wang Y, Bhasin S, Kawakubo M, Stewart Y, Hahn C, Colletti P, Roubenoff R, Yarasheski KE, Azen SP, Aoki Y, Yamamoto T, Otuka T, Blanc-Bisson C, Bourdel-Marchasson I, Bocock MA, Keller HH, Bowman G, Baxter J, Oken B, Frei B, Traber M, Leonard S, Kaye J, Shannon J, Quinn J, Carlsson M, Gustafson Y, Eriksson S, Littbrand H, Håglin L, Danthiir V, Wilson C, Nettelbeck T, Burns N, Wittert G, Noakes M, Clifton P, DiMaria-Ghalili RA, Grieger JA, Nowson CA, Wattanapenpaiboon NT, Holstein J, Robinson C, Hartmann C, Rueb S, Heffel L, Dintaman S, Reynolds J, Fleming L, Crull M, Goldey J, Serper LL, Hubbard R, Westengard J, Horning M, Ishige Y, Aoki Y, Keller HH, Keller HH, LaStayo PC, Marcus RL, Smith S, Kidde J, Dibble L, Butler C, Hill M, LaStayo PC, Marcus RL, Dibble L, Kidde J, Peters C, Meier W, Laughlin GA, Kritz-Silverstein D, von Muhlen D, Barrett-Connor E, Olariu L, Petcu M, Tulcan C, Pup M, Otilingam P, Gate M, Pasinetti GM, Ray B, Chauhan NB, Bailey JA, Lahiri DK, Shatenstein B, Kergoat MJ, Reid I, Chicoine ME, Vaz L, Stewart R, Sabbah W, Tsakos G, D’Aiuto F, Watt RG, Sturman M, Kelly J, Fleischman D, Leurgans S, Bennett D, Morris MC, Suominen MH, Muurinen S, Soini H, Pitkälä KH, Yamamoto T, Fujinoki C, Aoki Y. 3rd IANA (International Academy on Nutrition and Aging) Meeting Nutrition, Exercise & Alzheimer and Clinical Trials on Sarcopenia August 1–2, 2008 Hyatt Regency Tamaya Resort 1300 Tuyuna Trail Santa Ana Pueblo, NM USA. J Nutr Health Aging 2008. [DOI: 10.1007/bf02982702] [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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Wang X, Eaton M, Mayer M, Li H, He D, Nelson E, Christopher-Hennings J. Porcine reproductive and respiratory syndrome virus productively infects monocyte-derived dendritic cells and compromises their antigen-presenting ability. Arch Virol 2006; 152:289-303. [PMID: 17031757 DOI: 10.1007/s00705-006-0857-1] [Citation(s) in RCA: 111] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2005] [Accepted: 08/14/2006] [Indexed: 10/24/2022]
Abstract
Dendritic cells (DC) are potent antigen-presenting cells that play an important role in inducing primary antigen-specific immune responses. However, some viruses have evolved to specifically target DC to circumvent the host's immune responses for their persistence in the host. Porcine reproductive and respiratory syndrome virus (PRRSV) causes a persistent infection in susceptible animals. Although it is generally believed that the existence of PRRSV quasispecies is partly responsible for the virus persistence, other mechanisms of immune evasion or immune suppression may also exist. Here, we studied the role of DC in PRRSV persistence and immune suppression. Our results showed that PRRSV underwent a productive replication in pig monocyte-derived DC (Mo-DC) as measured by both immunofluorescence staining of viral nucleocapsid protein and virus titration assays, leading to cell death via both apoptosis and necrosis mechanisms. Additionally, PRRSV infection of Mo-DC resulted in reduced expression of MHC class I, MHC class II, CD14 and CD11b/c. This was in agreement with the impaired mixed lymphocyte reaction of PRRSV-infected Mo-DC compared to that of mock-infected Mo-DC. We also examined the cytokine profiles of PRRSV-infected Mo-DC using a quantitative ELISA method. Results indicated that no apparent change in the levels of IL-10, IL-12 and IFN-gamma was detected. Taken together, our data demonstrate that PRRSV productively infects Mo-DC and impairs the normal antigen presentation ability of Mo-DC by inducing cell death, down-regulating the expression of MHC class I, MHC class II, CD11b/c and CD14 and by inducing minimal Th1 cytokines.
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Affiliation(s)
- X Wang
- Department of Biology and Microbiology, South Dakota State University, Brookings, SD 57007, USA.
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Patton JF, Spigel DR, Greco FA, Liggett WH, Zubkus JD, Baskette M, Schreeder M, Woytowitz D, Nelson E, Hainsworth JD. Irinotecan (I), carboplatin (C), and radiotherapy (RT) followed by maintenance bevacizumab (B) in the treatment (tx) of limited-stage small cell lung cancer (LS-SCLC): Update of a phase II trial of the Minnie Pearl Cancer Research Network. J Clin Oncol 2006. [DOI: 10.1200/jco.2006.24.18_suppl.7085] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [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
7085 Background: Targeting VEGF has proven to be an effective tx strategy in many solid tumors including non-small cell lung cancer. VEGF expression in SCLC provides rationale for studying B in addition to chemoradiotherapy. Methods: The endpoints of this multicenter community-based study were to assess the safety, response rate (RR), and progression-free survival (PFS) of I/C/RT followed by B in patients (pts) with LS-SCLC. Tx included: C AUC = 5 IV D1, I 50mg/m2 IV D1,8 Q 21D x 4 cycles, and RT 1.8 Gy daily to a total of 61.2 Gy, beginning with the 3rd cycle. 3rd and 4th cycles were 28D each. Pts were restaged after 4 cycles. If no progressive disease (PD) pts received B 10 mg/kg IV Q 14D x 10 doses. Eligibility included: measurable disease, ECOG PS 0–1, informed consent, and no new brain metastases or bleeding. Results: Fifty-seven pts were enrolled from 8/03 to 10/04. Forty-five pts (79%) and 41 pts (72%) received planned tx with I/C/RT and B, respectively. The range of follow-up is 14–28 months. Baseline features: median age 65 years (42–80); male/female, 37%/63%; ECOG PS 0,1: 26%/74%. Grade (G) 3/4 non-hematologic toxicity: diarrhea (9%), DVT (4%), vomiting (11%), and fatigue (9%). G3/4 hematologic toxicity: neutropenia (37%), anemia (5%), and thrombocytopenia (13%). Only 9% of pts experienced G3/4 toxicity during B tx (1 pt each: DVT, hypokalemia, depression, pain, and colon perforation). There were 2 tx-related deaths (both from respiratory failure; 1 and 2 doses of B had been administered). Complete/partial responses were observed in 15 pts (26%)/31 pts (54%), respectively, for an overall RR of 80% (95% CI 70%-90%). Four pts had stable disease, and 5% had PD (4 pts were unevaluable.) 1- and 2-year PFS rates were 63% and 54%, respectively. 1- and 2- year overall survival (OS) rates were 71% and 29%, respectively. Median OS was 15 months. Conclusions: The safety, RR, and 1- and 2-year survival results of I/C/RT followed by B compare favorably with standard tx for LS-SCLC; and B may improve PFS. Assessing the role of B as maintenance tx in improving OS in this setting will require randomized trials. [Table: see text]
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Affiliation(s)
- J. F. Patton
- Sarah Cannon Research Institute/Tennessee Oncology, Nashville, TN; Comprehensive Cancer Institute, Huntsville, AL; Florida Cancer Specialists, Ft. Myers, FL; Upstate Carolina CCOP, Spartanburg, SC
| | - D. R. Spigel
- Sarah Cannon Research Institute/Tennessee Oncology, Nashville, TN; Comprehensive Cancer Institute, Huntsville, AL; Florida Cancer Specialists, Ft. Myers, FL; Upstate Carolina CCOP, Spartanburg, SC
| | - F. A. Greco
- Sarah Cannon Research Institute/Tennessee Oncology, Nashville, TN; Comprehensive Cancer Institute, Huntsville, AL; Florida Cancer Specialists, Ft. Myers, FL; Upstate Carolina CCOP, Spartanburg, SC
| | - W. H. Liggett
- Sarah Cannon Research Institute/Tennessee Oncology, Nashville, TN; Comprehensive Cancer Institute, Huntsville, AL; Florida Cancer Specialists, Ft. Myers, FL; Upstate Carolina CCOP, Spartanburg, SC
| | - J. D. Zubkus
- Sarah Cannon Research Institute/Tennessee Oncology, Nashville, TN; Comprehensive Cancer Institute, Huntsville, AL; Florida Cancer Specialists, Ft. Myers, FL; Upstate Carolina CCOP, Spartanburg, SC
| | - M. Baskette
- Sarah Cannon Research Institute/Tennessee Oncology, Nashville, TN; Comprehensive Cancer Institute, Huntsville, AL; Florida Cancer Specialists, Ft. Myers, FL; Upstate Carolina CCOP, Spartanburg, SC
| | - M. Schreeder
- Sarah Cannon Research Institute/Tennessee Oncology, Nashville, TN; Comprehensive Cancer Institute, Huntsville, AL; Florida Cancer Specialists, Ft. Myers, FL; Upstate Carolina CCOP, Spartanburg, SC
| | - D. Woytowitz
- Sarah Cannon Research Institute/Tennessee Oncology, Nashville, TN; Comprehensive Cancer Institute, Huntsville, AL; Florida Cancer Specialists, Ft. Myers, FL; Upstate Carolina CCOP, Spartanburg, SC
| | - E. Nelson
- Sarah Cannon Research Institute/Tennessee Oncology, Nashville, TN; Comprehensive Cancer Institute, Huntsville, AL; Florida Cancer Specialists, Ft. Myers, FL; Upstate Carolina CCOP, Spartanburg, SC
| | - J. D. Hainsworth
- Sarah Cannon Research Institute/Tennessee Oncology, Nashville, TN; Comprehensive Cancer Institute, Huntsville, AL; Florida Cancer Specialists, Ft. Myers, FL; Upstate Carolina CCOP, Spartanburg, SC
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Abstract
A retrospective review was conducted to determine the safety and efficacy of ezetimibe as a treatment option for renal transplant recipients. We evaluated the medical records of 34 adult renal transplant recipients receiving ezetimibe as monotherapy or combination therapy. Fasting lipid profiles were obtained at baseline and at 1-6 months post-ezetimibe initiation. Twenty patients received cyclosporine, 12 patients received tacrolimus, 1 patient received either sirolimus or no calcineurin therapy at the time of ezetimibe initiation. Monotherapy was started in 8 patients, who had all previously failed statins, and combination therapy was utilized in 26 patients. Monotherapy or combination therapy resulted in a mean reduction in total cholesterol of 23.3%, triglycerides 40.2%, low-density lipoproteins 16.8% and high-density lipoproteins 4.8% after 3.1 months of therapy. Ezetimibe as combination or monotherapy is a safe and effective treatment option for dyslipidemia in renal transplant recipients without changes in calcineurin inhibitor levels or renal function.
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Affiliation(s)
- C Buchanan
- University of Utah Hospitals and Clinics, Renal Transplant Program, Salt Lake City, Utah, USA.
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Mannioui A, Nelson E, Schiffer C, Felix N, Le Rouzic E, Benichou S, Gluckman JC, Canque B. Human immunodeficiency virus type 1 KK26-27 matrix mutants display impaired infectivity, circularization and integration but not nuclear import. Virology 2005; 339:21-30. [PMID: 15963546 DOI: 10.1016/j.virol.2005.05.023] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [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: 04/14/2005] [Revised: 05/11/2005] [Accepted: 05/20/2005] [Indexed: 10/25/2022]
Abstract
We analyzed the role of human immunodeficiency virus (HIV)-1 matrix protein (MA) during the virus replication afferent phase. Single-round infection of H9 T lymphocytes showed that the combined mutation of MA Lys residues 26-27 in MA reported nuclear localization signal (NLS)-1 impaired infectivity, abrogated 2-LTR-circle formation and significantly reduced integration. However, the mutation did not affect viral DNA docking to chromatin in either interphasic or mitotic cells, indicating that MA N-terminal basic domain should not represent a major determinant of HIV-1 nuclear import in T lymphocytes. These data point to a previously unreported role of MA in the late, post-chromatin-binding, afferent phase of HIV-1 replication cycle.
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Affiliation(s)
- Abdelkrim Mannioui
- UMR 7151 Centre National de la Recherche Scientifique-Université Paris 7, 75010 Paris, France.
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Szivek JA, Margolis DS, Garrison BK, Nelson E, Vaidyanathan RK, DeYoung DW. TGF-beta1-enhanced TCP-coated sensate scaffolds can detect bone bonding. J Biomed Mater Res B Appl Biomater 2005; 73:43-53. [PMID: 15682399 PMCID: PMC2288753 DOI: 10.1002/jbm.b.30177] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Porous polybutylene terephthalate (PBT) scaffold systems were tested as orthopedic implants to determine whether these scaffolds could be used to detect strain transfer following bone growth into the scaffold. Three types of scaffold systems were tested: porous PBT scaffolds, porous PBT scaffolds with a thin beta-tricalcium phosphate coating (LC-PBT), and porous PBT scaffolds with the TCP coating vacuum packed into the scaffold pores (VI-PBT). In addition, the effect of applying TGF-beta1 to scaffolds as an enhancement was examined. The scaffolds were placed onto the femora of rats and left in vivo for 4 months. The amount of bone ingrowth and the strain transfer through various scaffolds was evaluated by using scanning electron microscopy, histology, histomorphometry, and cantilever bend testing. The VI-PBT scaffold showed the highest and most consistent degree of mechanical interaction between bone and scaffold, providing strain transfers of 68.5% (+/-20.6) and 79.2% (+/-8.7) of control scaffolds in tension and compression, respectively. The strain transfer through the VI-PBT scaffold decreased to 29.1% (+/-24.3) and 30.4% (+/-25.8) in tension and compression when used with TGF-beta1. TGF-beta1 enhancement increased the strain transfer through LC-PBT scaffolds in compression from 9.4% (+/-8.7) to 49.7% (+/-31.0). The significant changes in mechanical strain transfer through LC-PBT and VI-PBT scaffolds correlated with changes in bone ingrowth fraction, which was increased by 39.6% in LC-PBT scaffolds and was decreased 21.3% in VI-PBT scaffolds after TGF-beta1 enhancement. Overall, the results indicate that strain transfer through TCP-coated PBT scaffolds correlate with bone ingrowth after implantation, making these instrumented scaffolds useful for monitoring bone growth by monitoring strain transfer.
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Affiliation(s)
- J A Szivek
- Orthopedic Research Laboratory, Department of Orthopedic Surgery, Arizona Arthritis Center, College of Medicine, University of Arizona, P.O. Box 245194, Tucson, Arizona 85724, USA.
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Bolin LM, Zhaung A, Strychkarska-Orczyk I, Nelson E, Huang I, Malit M, Nguyen Q. Differential inflammatory activation of IL-6 (−/−) astrocytes. Cytokine 2005; 30:47-55. [PMID: 15804595 DOI: 10.1016/j.cyto.2004.11.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2004] [Revised: 11/22/2004] [Accepted: 11/29/2004] [Indexed: 10/25/2022]
Abstract
IL-6 is a major immunomodulatory cytokine with neuroprotective activity. The absence of interleukin-6 (IL-6) results in increased vulnerability of dopaminergic neurons to the neurotoxicant, MPTP, and a compromised reactive microgliosis. To determine how astrogliosis may contribute to nigrostriatal degeneration in IL-6 (-/-) mice, the inflammatory profiles of astrocytes of IL-6 genotype were compared. Fourteen cytokines and four chemokines were simultaneously assayed in the supernatants of LPS-stimulated primary astrocyte cultures. In a time course of 6, 18 and 48 h and LPS stimulations of 0, 0.1, 1, 10 and 100 ng/ml, IL-6 (-/-) astrocytes secreted significantly greater amounts of the pro-inflammatory cytokines IL-1alpha, IL-1beta and TNFalpha than did IL-6 (+/+) cells. Elevated levels of IL-10 and IL-12p40 were only detected at 48 h post-stimulation with greater IL-10 in IL-6 (-/-) supernatants and greater IL-12p40 in IL-6 (+/+) supernatants. IL-6 (+/+) astrocytes produced more G-CSF and GM-CSF when compared with IL-6 (-/-) astrocytes. Chemokine levels were greater in supernatants of IL-6 (+/+) astrocytes than IL-6 (-/-) cells prior to 48 h post-stimulation. At that time, higher levels of MIP-1alpha were maintained in IL-6 (+/+) supernatant, while similar levels of MCP-1 in supernatants of both IL-6 (+/+) and IL-6 (-/-) cells were measured. Additionally, LPS (100 ng/ml) resulted in greater levels of KC and Rantes in IL-6 (-/-) astrocyte supernatants compared with IL-6 (+/+) supernatants at that time. These results suggest that the autocrine modulatory activities of IL-6 affect multiple cytokine secretory pathways, which could participate in neurodegenerative processes.
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Affiliation(s)
- L M Bolin
- The Parkinson's Institute, 1170 Morse Avenue, Sunnyvale, CA 94089-1605, USA.
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Wuerdeman L, Volk L, Ferrari J, Colclough C, Nelson E, Wald J, Middleton B. Keeping patients active and current in a patient portal. AMIA Annu Symp Proc 2005; 2005:1160. [PMID: 16779446 PMCID: PMC1560597] [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] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Maintaining current contact information is crucial to the effectiveness of communication via patient portals. Patients who visit a portal infrequently, or whose contact information is not updated, may miss administrative notices or clinical messages from their doctor's office. We invited patients to review and update their contact information via a broadcast e-mail message sent to all patients in the patient portal, Patient Gateway. We report the effectiveness of the broadcast message approach to reaching registered patients.
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Affiliation(s)
- L Wuerdeman
- Clinical Quality Analysis, Partner's HealthCare System, Wellesley, MA, USA
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42
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Wasilk A, Callahan JD, Christopher-Hennings J, Gay TA, Fang Y, Dammen M, Reos ME, Torremorell M, Polson D, Mellencamp M, Nelson E, Nelson WM. Detection of U.S., Lelystad, and European-like porcine reproductive and respiratory syndrome viruses and relative quantitation in boar semen and serum samples by real-time PCR. J Clin Microbiol 2004; 42:4453-61. [PMID: 15472293 PMCID: PMC522289 DOI: 10.1128/jcm.42.10.4453-4461.2004] [Citation(s) in RCA: 108] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Transmission of porcine reproductive and respiratory syndrome virus (PRRSV) via boar semen has been documented. Since semen is widely disseminated for artificial insemination and the virus can cause significant health and economic consequences, it is essential to have well-validated, rapid diagnostic techniques to detect and quantitate the virus for diagnostic and research purposes. Previously, boar semen was tested by a nested PCR (nPCR) assay which was compared to the "gold standard" swine bioassay. A correlation of 94% was observed, indicating that, most of the time, PCR detected infectious virus. Subsequently, a real-time PCR targeting the 3' untranslated region of the PRRSV genome was compared with nPCR by testing 413 serum and semen samples from PRRSV-inoculated and control boars. There was 95% agreement between the results of the two tests, with the majority of samples with discordant results containing virus at the lower range of detection by the assays. The virus in all samples was quantitated by using a standard curve obtained by serial dilution of an in vitro transcript. By using the in vitro transcript, the lower limit of sensitivity was observed to be approximately 33 copies/ml. Reactivity with a panel of more than 100 PRRSV isolates from various geographical regions in the United States was also documented. No reactivity with nine nonrelated swine viruses was noted. A real-time PCR was also developed for the detection of the European Lelystad virus and the European-like PRRSV now found in the United States. In six of six PRRSV-inoculated boars, peak levels of viremia occurred at 5 days postinoculation (DPI) and were most consistently detectable throughout 22 DPI. In five of six boars, PRRSV was shed in semen for 0 to 2 days during the first 10 DPI; however, one of six boars shed the virus in semen through 32 DPI. Therefore, in general, the concentration and duration of PRRSV shedding in semen did not correlate with the quantity or duration of virus in serum. These differences warrant further studies into the factors that prevent viral replication in the reproductive tract.
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Affiliation(s)
- A Wasilk
- Department of Veterinary Science, South Dakota State University, Brookings, South Dakota 57007-1396, USA
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Rogers A, Kennedy A, Nelson E, Robinson A. Patients' experiences of an open access follow up arrangement in managing inflammatory bowel disease. Qual Saf Health Care 2004. [PMID: 15465941 DOI: 10.1136/qshc.2003.008292] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND Improving access is a key policy issue in improving quality of care and extending patient choice and participation. People's experience of changing from fixed outpatient appointments to more flexible direct access arrangements for chronic disease has been underexplored. OBJECTIVES To examine patients' views on using an open system of access compared with fixed outpatient appointments as part of a guided self-management intervention for inflammatory bowel disease (IBD). DESIGN Embedded qualitative study undertaken alongside a randomised controlled trial. Semi-structured interviews were undertaken to obtain an in depth understanding of patients' experience of the change in access arrangements. PARTICIPANTS A purposive sample (n = 30) was drawn from the intervention group (n = 700) according to a range of responses to the trial baseline and follow up quantitative measures. RESULTS 28 interviews were included in the analysis. Compared with the previous system of fixed appointments, preference for the new open access system was based on enhanced personal control in contacting services and the view that it fitted better with everyday routine management and the requirement for urgent medical contact when symptoms fail to respond to medication. Preference for retaining fixed appointments was based on a sense of security from gaining access which did not require the individual to initiate the request for medical help. CONCLUSIONS Open access may fit better with patients' self-management of their condition and everyday routines, roles and responsibilities. Ensuring that outpatient organisational arrangements and personnel are responsive to patient initiated requests for appointments is likely to impact on the acceptability of this type of access arrangement. Some people may continue to prefer the fixed appointment system which should be retained if patient choice is to be respected.
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Affiliation(s)
- A Rogers
- National Primary Care Research and Development Centre, The University of Manchester, Manchester M13 9PL, UK.
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Rogers A, Kennedy A, Nelson E, Robinson A. Patients' experiences of an open access follow up arrangement in managing inflammatory bowel disease. Qual Saf Health Care 2004; 13:374-8. [PMID: 15465941 PMCID: PMC1743885 DOI: 10.1136/qhc.13.5.374] [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] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
BACKGROUND Improving access is a key policy issue in improving quality of care and extending patient choice and participation. People's experience of changing from fixed outpatient appointments to more flexible direct access arrangements for chronic disease has been underexplored. OBJECTIVES To examine patients' views on using an open system of access compared with fixed outpatient appointments as part of a guided self-management intervention for inflammatory bowel disease (IBD). DESIGN Embedded qualitative study undertaken alongside a randomised controlled trial. Semi-structured interviews were undertaken to obtain an in depth understanding of patients' experience of the change in access arrangements. PARTICIPANTS A purposive sample (n = 30) was drawn from the intervention group (n = 700) according to a range of responses to the trial baseline and follow up quantitative measures. RESULTS 28 interviews were included in the analysis. Compared with the previous system of fixed appointments, preference for the new open access system was based on enhanced personal control in contacting services and the view that it fitted better with everyday routine management and the requirement for urgent medical contact when symptoms fail to respond to medication. Preference for retaining fixed appointments was based on a sense of security from gaining access which did not require the individual to initiate the request for medical help. CONCLUSIONS Open access may fit better with patients' self-management of their condition and everyday routines, roles and responsibilities. Ensuring that outpatient organisational arrangements and personnel are responsive to patient initiated requests for appointments is likely to impact on the acceptability of this type of access arrangement. Some people may continue to prefer the fixed appointment system which should be retained if patient choice is to be respected.
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Affiliation(s)
- A Rogers
- National Primary Care Research and Development Centre, The University of Manchester, Manchester M13 9PL, UK.
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45
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Mannioui A, Schiffer C, Felix N, Nelson E, Brussel A, Sonigo P, Gluckman JC, Canque B. Cell cycle regulation of human immunodeficiency virus type 1 integration in T cells: antagonistic effects of nuclear envelope breakdown and chromatin condensation. Virology 2004; 329:77-88. [PMID: 15476876 DOI: 10.1016/j.virol.2004.08.022] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [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: 06/02/2004] [Revised: 07/12/2004] [Accepted: 08/03/2004] [Indexed: 11/24/2022]
Abstract
We examined the influence of mitosis on the kinetics of human immunodeficiency virus type 1 integration in T cells. Single-round infection of cells arrested in G1b or allowed to synchronously proceed through division showed that mitosis delays virus integration until 18-24 h postinfection, whereas integration reaches maximum levels by 15 h in G1b-arrested cells. Subcellular fractionation of metaphase-arrested cells indicated that, while nuclear envelope disassembly facilitates docking of viral DNA to chromatin, chromosome condensation directly antagonizes and therefore delays integration. As a result of the balance between the two effects, virus integration efficiency is eventually up to threefold greater in dividing cells. At the single-cell level, using a green fluorescent protein-expressing reporter virus, we found that passage through mitosis leads to prominent asymmetric segregation of the viral genome in daughter cells without interfering with provirus expression.
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Affiliation(s)
- Abdelkrim Mannioui
- EMI-0013 Institut National de la Santé et de la Recherche Médicale-Université Paris 7, 75010 Paris, France.
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Abstract
Reports that compare dental caries indices in HIV-seropositive (HIV+) subjects with HIV-seronegative (HIV-) subjects are rare. The objective of this study was to determine if there was an association between HIV infection and dental caries among women enrolled in the Women's Interagency HIV Study. Subjects included 538 HIV+ and 141 HIV- women at baseline and 242 HIV+ and 66 HIV- women at year 5. Caries indices included DMFS and DFS (coronal caries) and DFSrc (root caries). Cross-sectional analysis of coronal caries data revealed a 1.2-fold-higher caries prevalence among HIV+ women compared with HIV- women. Longitudinally, DMFS increased with increasing age and lower average stimulated salivary volume. Root caries results were not significant except for an overall increased DFSrc associated with smoking. Anti-retroviral therapy was not identified as a risk factor for dental caries.
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Affiliation(s)
- J A Phelan
- Department of Oral Pathology (Mail Code 9436), New York University, College of Dentistry, 345 East 24th Street, New York, NY 10010, USA.
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Schiffer C, Lecellier CH, Mannioui A, Felix N, Nelson E, Lehmann-Che J, Giron ML, Gluckman JC, Saib A, Canque B. Persistent infection with primate foamy virus type 1 increases human immunodeficiency virus type 1 cell binding via a Bet-independent mechanism. J Virol 2004; 78:11405-10. [PMID: 15452263 PMCID: PMC521848 DOI: 10.1128/jvi.78.20.11405-11410.2004] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
We report that human T cells persistently infected with primate foamy virus type 1 (PFV-1) display an increased capacity to bind human immunodeficiency virus type 1 (HIV-1), resulting in increased cell permissiveness to HIV-1 infection and enhanced cell-to-cell virus transmission. This phenomenon is independent of HIV-1 receptor, CD4, and it is not related to PFV-1 Bet protein expression. Increased virus attachment is specifically inhibited by heparin, indicating that it should be mediated by interactions with heparan sulfate glycosaminoglycans expressed on the target cells. Given that both viruses infect similar animal species, the issue of whether coinfection with primate foamy viruses interferes with the natural course of lentivirus infections in nonhuman primates should be considered.
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Affiliation(s)
- Cecile Schiffer
- Laboratoire d'Immunologie Cellulaire et Immunopathologie de l'EPHE, EMI-0013, Institut Universitaire d'Hématologie, Centre Hayem, Hôpital Saint Louis, 1 avenue Claude Vellefaux, 75475 Paris CEDEX 10, France
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Kennedy AP, Nelson E, Reeves D, Richardson G, Roberts C, Robinson A, Rogers AE, Sculpher M, Thompson DG. A randomised controlled trial to assess the effectiveness and cost of a patient orientated self management approach to chronic inflammatory bowel disease. Gut 2004; 53:1639-45. [PMID: 15479685 PMCID: PMC1774266 DOI: 10.1136/gut.2003.034256] [Citation(s) in RCA: 159] [Impact Index Per Article: 8.0] [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] [Indexed: 12/15/2022]
Abstract
OBJECTIVES We developed a patient centred approach to chronic disease self management by providing information designed to promote patient choice. We then conducted a randomised controlled trial of the approach in inflammatory bowel disease (IBD) to assess whether it could alter clinical outcome and affect health service use. DESIGN A multicentre cluster randomised controlled trial. SETTING The trial was conducted in the outpatient departments of 19 hospitals with randomisation by treatment centre, 10 control sites, and nine intervention sites. For patients at intervention sites, an individual self management plan was negotiated and written information provided. PARTICIPANTS A total of 700 patients with established inflammatory bowel disease were recruited. MAIN OUTCOME MEASURES Main outcome measures recorded at one year were: quality of life, health service resource use, and patient satisfaction. Secondary outcomes included measures of enablement-confidence to cope with the condition. RESULTS One year following the intervention, self managing patients had made fewer hospital visits (difference -1.04 (95% confidence interval (CI) -1.43 to -0.65); p<0.001) without increase in the number of primary care visits, and quality of life was maintained without evidence of anxiety about the programme. The two groups were similar with respect to satisfaction with consultations. Immediately after the initial consultation, those who had undergone self management training reported greater confidence in being able to cope with their condition (difference 0.90 (95% CI 0.12-1.68); p<0.03). CONCLUSIONS Adoption of this approach for the management of chronic disease such as IBD in the NHS and other managed health care organisations would considerably reduce health provision costs and benefit disease control.
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Affiliation(s)
- A P Kennedy
- National Primary Care Research and Development Centre, University of Manchester, Manchester, UK.
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Abstract
PURPOSE To describe magnetic resonance imaging (MRI) findings in patients with suspected Parsonage Turner syndrome and to emphasize the value of an additional whole body MR scan to improve specificity of this diagnosis. MATERIAL AND METHODS Three patients with proven Parsonage Turner syndrome referred for conventional MRI of the shoulder girdle and additional whole body turboSTIR MRI were included for study. RESULTS In each case, imaging revealed edema in the muscles of the shoulder girdle. Whole body turboSTIR MRI scan confirmed localized unilateral changes in each case improving specificity and confidence in the diagnosis of Parsonage Turner syndrome in each case. CONCLUSION Whole body turboSTIR MR imaging is a useful diagnostic tool in the evaluation of patients with suspected Parsonage Turner syndrome. Inclusion of the brain, neck, brachial plexus, and extremity musculature at whole body imaging allows differentiation from polymyositis and elimination of additional causes of shoulder girdle pain and weakness including gross lesions in the brain, neck, and brachial plexus by a single non-invasive study.
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Affiliation(s)
- M Ryan
- Cappagh National Orthopaedic Hospital, Finglas, Dublin, Ireland
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Kennedy A, Nelson E, Reeves D, Richardson G, Roberts C, Robinson A, Rogers A, Sculpher M, Thompson D. A randomised controlled trial to assess the impact of a package comprising a patient-orientated, evidence-based self-help guidebook and patient-centred consultations on disease management and satisfaction in inflammatory bowel disease. Health Technol Assess 2004; 7:iii, 1-113. [PMID: 14567905 DOI: 10.3310/hta7280] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
OBJECTIVES To determine if a whole systems approach to self-management improves clinical outcomes and leads to cost-effective use of NHS services. DESIGN Nineteen hospitals were randomised to 10 control sites and nine intervention sites. Consultants from intervention sites received training in patient-centred care before recruitment and introduced the intervention to eligible patients. Patients at the control sites were recruited and went on to have an ordinary consultation. Qualitative interviews were undertaken to obtain an in-depth understanding of patients' and consultants' experience of the intervention. SETTING Follow-up outpatient clinics at 19 hospitals in the north-west of England. PARTICIPANTS Seven hundred patients (297 at intervention sites and 403 at control sites) with established ulcerative colitis or Crohn's disease, aged 16 years and over, and able to write in English. INTERVENTIONS Consultants were trained to provide a patient-centred approach to care. Guidebooks on ulcerative colitis and Crohn's disease were developed with patients prior to the study. Patients prepared a written self-management plan and self-referred to services based on a self-evaluation of their need for advice. MAIN OUTCOME MEASURES Rates of hospital outpatient consultation, quality of life (QoL) and acceptability to patients. Health service resource use and assessed cost effectiveness using the EQ-5D. RESULTS After 1 year, the intervention resulted in fewer hospital visits, without change in the number of primary care visits. Patients felt more able to cope with their condition. The intervention produced no reduction in QoL and did not raise anxiety. The intervention group reported fewer symptom relapses; 74% of patients in the intervention group indicated a preference to continue the system. Qualitative results showed the guidebook was effective but organisational limitations constrained patient-centred aspects of the intervention for some. Cost-effectiveness analyses favoured self-management over standard care. CONCLUSIONS Further use of this method in chronic disease management seems likely to improve overall patient satisfaction and reduce health expenditure without evidence of adverse effect on disease control. Further attention needs to be given to self-referral and access arrangements and a re-distribution of control to patients through increased adherence to patient-centred norms on the part of consultants. Future research is recommended to evaluate the operating systems within secondary and primary care that would allow self-managers to self-refer and to keep them informed of new treatments, also to explore models for training health professionals in self-care methods, to study long-term effects of self-management in chronic disease and to transfer this approach to other chronic conditions.
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Affiliation(s)
- A Kennedy
- National Primary Care Research and Development Centre, School of Primary Care, University of Manchester, UK
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