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Bitzer M, Voesch S, Albert J, Bartenstein P, Bechstein W, Blödt S, Brunner T, Dombrowski F, Evert M, Follmann M, La Fougère C, Freudenberger P, Geier A, Gkika E, Götz M, Hammes E, Helmberger T, Hoffmann RT, Hofmann WP, Huppert P, Kautz A, Knötgen G, Körber J, Krug D, Lammert F, Lang H, Langer T, Lenz P, Mahnken A, Meining A, Micke O, Nadalin S, Nguyen HP, Ockenga J, Oldhafer K, Paprottka P, Paradies K, Pereira P, Persigehl T, Plauth M, Plentz R, Pohl J, Riemer J, Reimer P, Ringwald J, Ritterbusch U, Roeb E, Schellhaas B, Schirmacher P, Schmid I, Schuler A, von Schweinitz D, Seehofer D, Sinn M, Stein A, Stengel A, Steubesand N, Stoll C, Tannapfel A, Taubert A, Trojan J, van Thiel I, Tholen R, Vogel A, Vogl T, Vorwerk H, Wacker F, Waidmann O, Wedemeyer H, Wege H, Wildner D, Wittekind C, Wörns MA, Galle P, Malek N. S3-Leitlinie: Diagnostik und Therapie biliärer Karzinome. Z Gastroenterol 2022; 60:219-238. [PMID: 35148562 DOI: 10.1055/a-1589-7638] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- M Bitzer
- Medizinische Klinik I, Universitätsklinikum Tübingen
| | - S Voesch
- Medizinische Klinik I, Universitätsklinikum Tübingen
| | - J Albert
- Abteilung für Gastroenterologie, Hepatologie und Endokrinologie, Robert-Bosch-Krankenhaus, Stuttgart
| | - P Bartenstein
- Klinik und Poliklinik für Nuklearmedizin, LMU Klinikum, München
| | - W Bechstein
- Klinik für Allgemein-, Viszeral-, Transplantations- und Thoraxchirurgie, Universitätsklinikum Frankfurt
| | - S Blödt
- AWMF-Geschäftsstelle, Berlin
| | - T Brunner
- Klinik für Strahlentherapie, Universitätsklinikum Magdeburg
| | - F Dombrowski
- Institut für Pathologie, Universitätsmedizin Greifswald
| | - M Evert
- Institut für Pathologie, Regensburg
| | - M Follmann
- Office des Leitlinienprogrammes Onkologie, c/o Deutsche Krebsgesellschaft e.V., Berlin
| | - C La Fougère
- Nuklearmedizin und Klinische Molekulare Bildgebung, Tübingen
| | | | - A Geier
- Medizinische Klinik und Poliklinik II, Universitätsklinikum Würzburg
| | - E Gkika
- Klinik für Strahlenheilkunde, Department für Radiologische Diagnostik und Therapie, Universitätsklinikum Freiburg
| | | | - E Hammes
- Lebertransplantierte Deutschland e. V., Ansbach
| | - T Helmberger
- Institut für Radiologie, Neuroradiologie und minimal-invasive Therapie, München Klinik Bogenhausen, München
| | - R T Hoffmann
- Institut und Poliklinik für Diagnostische und Interventionelle Radiologie, Dresden
| | - W P Hofmann
- Gastroenterologie am Bayerischen Platz, medizinisches Versorgungszentrum, Berlin
| | - P Huppert
- Radiologisches Zentrum, Max Grundig Klinik, Bühl
| | - A Kautz
- Deutsche Leberhilfe e.V., Köln
| | - G Knötgen
- Konferenz onkologischer Kranken- und Kinderkrankenpflege, Hamburg
| | - J Körber
- Klinik Nahetal, Fachklinik für onkologische Rehabilitation und Anschlussrehabilitation, Bad Kreuznach
| | - D Krug
- Klinik für Strahlentherapie, Universitätsklinikum Schleswig-Holstein, Kiel
| | | | - H Lang
- Klinik für Allgemein-, Viszeral und Transplantationschirurgie, Universitätsmedizin der Johannes Gutenberg-Universität Mainz
| | - T Langer
- Office des Leitlinienprogrammes Onkologie, c/o Deutsche Krebsgesellschaft e.V., Berlin
| | - P Lenz
- Universitätsklinikum Münster, Zentrale Einrichtung Palliativmedizin, Münster
| | - A Mahnken
- Klinik für Diagnostische und Interventionelle Radiologie, Universitätsklinikum Gießen und Marburg GmbH, Marburg
| | - A Meining
- Medizinische Klinik und Poliklinik II des Universitätsklinikums Würzburg
| | - O Micke
- Klinik für Strahlentherapie und Radioonkologie, Franziskus Hospital Bielefeld
| | - S Nadalin
- Universitätsklinik für Allgemein-, Viszeral- und Transplantationschirurgie, Universitätsklinikum Tübingen
| | | | - J Ockenga
- Medizinische Klinik II, Klinikum Bremen-Mitte, Bremen
| | - K Oldhafer
- Klinik für Leber-, Gallenwegs- und Pankreaschirurgie, Semmelweis Universität, Asklepios Campus Hamburg
| | - P Paprottka
- Abteilung für interventionelle Radiologie, Klinikum rechts der Isar der Technischen Universität München
| | - K Paradies
- Konferenz onkologischer Kranken- und Kinderkrankenpflege, Hamburg
| | - P Pereira
- Abteilung für interventionelle Radiologie, Klinikum rechts der Isar der Technischen Universität München
| | - T Persigehl
- Institut für Diagnostische und Interventionelle Radiologie, Universitätsklinikum Köln
| | | | - R Plentz
- Klinikum Bremen-Nord, Innere Medizin, Bremen
| | - J Pohl
- Interventionelles Endoskopiezentrum und Schwerpunkt Gastrointestinale Onkologie, Asklepios Klinik Altona, Hamburg
| | - J Riemer
- Lebertransplantierte Deutschland e. V., Bretzfeld
| | - P Reimer
- Institut für diagnostische und interventionelle Radiologie, Städtisches Klinikum Karlsruhe gGmbH, Karlsruhe
| | - J Ringwald
- Psychosomatische Medizin und Psychotherapie, Universitätsklinikum Tübingen
| | | | - E Roeb
- Medizinische Klinik II, Universitätsklinikum Gießen und Marburg GmbH, Gießen
| | - B Schellhaas
- Medizinische Klinik I, Friedrich-Alexander Universität Erlangen-Nürnberg, Erlangen
| | - P Schirmacher
- Pathologisches Institut, Universitätsklinikum Heidelberg
| | - I Schmid
- Zentrum Pädiatrische Hämatologie und Onkologie, Dr. von Haunersches Kinderspital, Klinikum der Universität München
| | - A Schuler
- Medizinische Klinik, Alb Fils Kliniken GmbH, Göppingen
| | | | - D Seehofer
- Klinik und Poliklinik für Viszeral-, Transplantations-, Thorax- und Gefäßchirurgie, Universitätsklinikum Leipzig
| | - M Sinn
- Medizinische Klinik II, Universitätsklinikum Hamburg-Eppendorf
| | - A Stein
- Hämatologisch-Onkologischen Praxis Eppendorf, Hamburg
| | - A Stengel
- Psychosomatische Medizin und Psychotherapie, Universitätsklinikum Tübingen
| | | | - C Stoll
- Klinik Herzoghöhe Bayreuth, Bayreuth
| | - A Tannapfel
- Institut für Pathologie der Ruhr-Universität Bochum am Berufsgenossenschaftlichen Universitätsklinikum Bergmannsheil, Bochum
| | - A Taubert
- Kliniksozialdienst, Universitätsklinikum Heidelberg, Bochum
| | - J Trojan
- Medizinische Klinik I, Universitätsklinikum Frankfurt, Frankfurt am Main
| | | | - R Tholen
- Deutscher Verband für Physiotherapie e. V., Köln
| | - A Vogel
- Klinik für Gastroenterologie, Hepatologie, Endokrinologie der Medizinischen Hochschule Hannover, Hannover
| | - T Vogl
- Universitätsklinikum Frankfurt, Institut für Diagnostische und Interventionelle Radiologie, Frankfurt
| | - H Vorwerk
- Klinik für Strahlentherapie, Universitätsklinikum Gießen und Marburg GmbH, Marburg
| | - F Wacker
- Institut für Diagnostische und Interventionelle Radiologie der Medizinischen Hochschule Hannover, Hannover
| | - O Waidmann
- Medizinische Klinik I, Universitätsklinikum Frankfurt, Frankfurt am Main
| | - H Wedemeyer
- Klinik für Gastroenterologie, Hepatologie und Endokrinologie Medizinische Hochschule Hannover, Hannover
| | - H Wege
- Medizinische Klinik und Poliklinik, Universitätsklinikum Hamburg-Eppendorf, Hamburg
| | - D Wildner
- Innere Medizin, Krankenhäuser Nürnberger Land GmbH, Lauf an der Pegnitz
| | - C Wittekind
- Institut für Pathologie, Universitätsklinikum Leipzig, Leipzig
| | - M A Wörns
- Medizinische Klinik und Poliklinik, Universitätsklinikum Mainz, Mainz
| | - P Galle
- Medizinische Klinik und Poliklinik, Universitätsklinikum Mainz, Mainz
| | - N Malek
- Medizinische Klinik I, Universitätsklinikum Tübingen, Tübingen
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Bitzer M, Voesch S, Albert J, Bartenstein P, Bechstein W, Blödt S, Brunner T, Dombrowski F, Evert M, Follmann M, La Fougère C, Freudenberger P, Geier A, Gkika E, Götz M, Hammes E, Helmberger T, Hoffmann RT, Hofmann WP, Huppert P, Kautz A, Knötgen G, Körber J, Krug D, Lammert F, Lang H, Langer T, Lenz P, Mahnken A, Meining A, Micke O, Nadalin S, Nguyen HP, Ockenga J, Oldhafer K, Paprottka P, Paradies K, Pereira P, Persigehl T, Plauth M, Plentz R, Pohl J, Riemer J, Reimer P, Ringwald J, Ritterbusch U, Roeb E, Schellhaas B, Schirmacher P, Schmid I, Schuler A, von Schweinitz D, Seehofer D, Sinn M, Stein A, Stengel A, Steubesand N, Stoll C, Tannapfel A, Taubert A, Trojan J, van Thiel I, Tholen R, Vogel A, Vogl T, Vorwerk H, Wacker F, Waidmann O, Wedemeyer H, Wege H, Wildner D, Wittekind C, Wörns MA, Galle P, Malek N. S3-Leitlinie – Diagnostik und Therapie biliärer Karzinome. Z Gastroenterol 2022; 60:e186-e227. [PMID: 35148560 DOI: 10.1055/a-1589-7854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- M Bitzer
- Medizinische Klinik I, Universitätsklinikum Tübingen
| | - S Voesch
- Medizinische Klinik I, Universitätsklinikum Tübingen
| | - J Albert
- Abteilung für Gastroenterologie, Hepatologie und Endokrinologie, Robert-Bosch-Krankenhaus, Stuttgart
| | - P Bartenstein
- Klinik und Poliklinik für Nuklearmedizin, LMU Klinikum, München
| | - W Bechstein
- Klinik für Allgemein-, Viszeral-, Transplantations- und Thoraxchirurgie, Universitätsklinikum Frankfurt
| | - S Blödt
- AWMF-Geschäftsstelle, Berlin
| | - T Brunner
- Klinik für Strahlentherapie, Universitätsklinikum Magdeburg
| | - F Dombrowski
- Institut für Pathologie, Universitätsmedizin Greifswald
| | - M Evert
- Institut für Pathologie, Regensburg
| | - M Follmann
- Office des Leitlinienprogrammes Onkologie, c/o Deutsche Krebsgesellschaft e.V., Berlin
| | - C La Fougère
- Nuklearmedizin und Klinische Molekulare Bildgebung, Tübingen
| | | | - A Geier
- Medizinische Klinik und Poliklinik II, Universitätsklinikum Würzburg
| | - E Gkika
- Klinik für Strahlenheilkunde, Department für Radiologische Diagnostik und Therapie, Universitätsklinikum Freiburg
| | | | - E Hammes
- Lebertransplantierte Deutschland e. V., Ansbach
| | - T Helmberger
- Institut für Radiologie, Neuroradiologie und minimal-invasive Therapie, München Klinik Bogenhausen, München
| | - R T Hoffmann
- Institut und Poliklinik für Diagnostische und Interventionelle Radiologie, Dresden
| | - W P Hofmann
- Gastroenterologie am Bayerischen Platz, medizinisches Versorgungszentrum, Berlin
| | - P Huppert
- Radiologisches Zentrum, Max Grundig Klinik, Bühl
| | - A Kautz
- Deutsche Leberhilfe e.V., Köln
| | - G Knötgen
- Konferenz onkologischer Kranken- und Kinderkrankenpflege, Hamburg
| | - J Körber
- Klinik Nahetal, Fachklinik für onkologische Rehabilitation und Anschlussrehabilitation, Bad Kreuznach
| | - D Krug
- Klinik für Strahlentherapie, Universitätsklinikum Schleswig-Holstein, Kiel
| | | | - H Lang
- Klinik für Allgemein-, Viszeral und Transplantationschirurgie, Universitätsmedizin der Johannes Gutenberg-Universität Mainz
| | - T Langer
- Office des Leitlinienprogrammes Onkologie, c/o Deutsche Krebsgesellschaft e.V., Berlin
| | - P Lenz
- Universitätsklinikum Münster, Zentrale Einrichtung Palliativmedizin, Münster
| | - A Mahnken
- Klinik für Diagnostische und Interventionelle Radiologie, Universitätsklinikum Gießen und Marburg GmbH, Marburg
| | - A Meining
- Medizinische Klinik und Poliklinik II des Universitätsklinikums Würzburg
| | - O Micke
- Klinik für Strahlentherapie und Radioonkologie, Franziskus Hospital Bielefeld
| | - S Nadalin
- Universitätsklinik für Allgemein-, Viszeral- und Transplantationschirurgie, Universitätsklinikum Tübingen
| | | | - J Ockenga
- Medizinische Klinik II, Klinikum Bremen-Mitte, Bremen
| | - K Oldhafer
- Klinik für Leber-, Gallenwegs- und Pankreaschirurgie, Semmelweis Universität, Asklepios Campus Hamburg
| | - P Paprottka
- Abteilung für interventionelle Radiologie, Klinikum rechts der Isar der Technischen Universität München
| | - K Paradies
- Konferenz onkologischer Kranken- und Kinderkrankenpflege, Hamburg
| | - P Pereira
- Abteilung für interventionelle Radiologie, Klinikum rechts der Isar der Technischen Universität München
| | - T Persigehl
- Institut für Diagnostische und Interventionelle Radiologie, Universitätsklinikum Köln
| | | | - R Plentz
- Klinikum Bremen-Nord, Innere Medizin, Bremen
| | - J Pohl
- Interventionelles Endoskopiezentrum und Schwerpunkt Gastrointestinale Onkologie, Asklepios Klinik Altona, Hamburg
| | - J Riemer
- Lebertransplantierte Deutschland e. V., Bretzfeld
| | - P Reimer
- Institut für diagnostische und interventionelle Radiologie, Städtisches Klinikum Karlsruhe gGmbH, Karlsruhe
| | - J Ringwald
- Psychosomatische Medizin und Psychotherapie, Universitätsklinikum Tübingen
| | | | - E Roeb
- Medizinische Klinik II, Universitätsklinikum Gießen und Marburg GmbH, Gießen
| | - B Schellhaas
- Medizinische Klinik I, Friedrich-Alexander Universität Erlangen-Nürnberg, Erlangen
| | - P Schirmacher
- Pathologisches Institut, Universitätsklinikum Heidelberg
| | - I Schmid
- Zentrum Pädiatrische Hämatologie und Onkologie, Dr. von Haunersches Kinderspital, Klinikum der Universität München
| | - A Schuler
- Medizinische Klinik, Alb Fils Kliniken GmbH, Göppingen
| | | | - D Seehofer
- Klinik und Poliklinik für Viszeral-, Transplantations-, Thorax- und Gefäßchirurgie, Universitätsklinikum Leipzig
| | - M Sinn
- Medizinische Klinik II, Universitätsklinikum Hamburg-Eppendorf
| | - A Stein
- Hämatologisch-Onkologischen Praxis Eppendorf, Hamburg
| | - A Stengel
- Psychosomatische Medizin und Psychotherapie, Universitätsklinikum Tübingen
| | | | - C Stoll
- Klinik Herzoghöhe Bayreuth, Bayreuth
| | - A Tannapfel
- Institut für Pathologie der Ruhr-Universität Bochum am Berufsgenossenschaftlichen Universitätsklinikum Bergmannsheil, Bochum
| | - A Taubert
- Kliniksozialdienst, Universitätsklinikum Heidelberg, Bochum
| | - J Trojan
- Medizinische Klinik I, Universitätsklinikum Frankfurt, Frankfurt am Main
| | | | - R Tholen
- Deutscher Verband für Physiotherapie e. V., Köln
| | - A Vogel
- Klinik für Gastroenterologie, Hepatologie, Endokrinologie der Medizinischen Hochschule Hannover, Hannover
| | - T Vogl
- Universitätsklinikum Frankfurt, Institut für Diagnostische und Interventionelle Radiologie, Frankfurt
| | - H Vorwerk
- Klinik für Strahlentherapie, Universitätsklinikum Gießen und Marburg GmbH, Marburg
| | - F Wacker
- Institut für Diagnostische und Interventionelle Radiologie der Medizinischen Hochschule Hannover, Hannover
| | - O Waidmann
- Medizinische Klinik I, Universitätsklinikum Frankfurt, Frankfurt am Main
| | - H Wedemeyer
- Klinik für Gastroenterologie, Hepatologie und Endokrinologie Medizinische Hochschule Hannover, Hannover
| | - H Wege
- Medizinische Klinik und Poliklinik, Universitätsklinikum Hamburg-Eppendorf, Hamburg
| | - D Wildner
- Innere Medizin, Krankenhäuser Nürnberger Land GmbH, Lauf an der Pegnitz
| | - C Wittekind
- Institut für Pathologie, Universitätsklinikum Leipzig, Leipzig
| | - M A Wörns
- Medizinische Klinik und Poliklinik, Universitätsklinikum Mainz, Mainz
| | - P Galle
- Medizinische Klinik und Poliklinik, Universitätsklinikum Mainz, Mainz
| | - N Malek
- Medizinische Klinik I, Universitätsklinikum Tübingen, Tübingen
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Goubault E, Nguyen HP, Bogard S, Blanchet PJ, Bézard E, Vincent C, Langlois M, Duval C. Cardinal Motor Features of Parkinson's Disease Coexist with Peak-Dose Choreic-Type Drug-Induced Dyskinesia. J Parkinsons Dis 2019; 8:323-331. [PMID: 29843253 PMCID: PMC6027941 DOI: 10.3233/jpd-181312] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Background: Clinical and anecdotal observations propose that patients with Parkinson’s disease (PD) may show drug-induced dyskinesia (DID) concomitantly with cardinal motor features. However, the extent of the concomitant presence of DID and cardinal features remains to be determined. Objectives: This cross-sectional study measured peak-dose choreic-type DID in a quantitative manner in patients diagnosed with PD, and determined whether symptoms such as tremor, bradykinesia, rigidity, postural instability or freezing of gait (FoG) were still detectable in these patients. Methods: 89 patients diagnosed with PD were recruited and assessed using a combination of quantitative measures using inertial measurement units to capture DID, tremor, bradykinesia, and FoG. Clinical evaluations were also used to assess rigidity and postural instability. Motor symptoms of PD were assessed 3 times during the testing period, and a series of activities of daily living were repeated twice, in between clinical tests, during which the level of DID was quantified. Peak-dose was identified as the period during which patients had the highest levels of DID. Levels of tremor, rigidity, bradykinesia, postural instability, and FoG were used to determine the percentage of patients showing these motor symptoms simultaneously with DID. Results: 72.4% of patients tested presented with measurable DID during the experiment. Rest, postural and kinetic tremor (12.7% , 38.1% , and 15.9% respectively), bradykinesia (28.6% ), rigidity (55.6% ), postural instability (71.4% ) and FoG (9.5% ) were detected simultaneously with DID. Conclusions: PD symptomatology remains present in patients showing peak-dose choreic-type DID, illustrating the challenge facing physicians when trying to avoid dyskinesia while attempting to alleviate motor symptoms.
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Affiliation(s)
- Etienne Goubault
- Département des Sciences de l'activité physique, Université du Québec à Montréal, Montréal, Québec, Canada.,Centre de Recherche de l'Institut universitaire de gériatrie de Montréal, Montréal, Québec, Canada
| | - Hung P Nguyen
- Département des Sciences de l'activité physique, Université du Québec à Montréal, Montréal, Québec, Canada.,Centre de Recherche de l'Institut universitaire de gériatrie de Montréal, Montréal, Québec, Canada
| | - Sarah Bogard
- Département des Sciences de l'activité physique, Université du Québec à Montréal, Montréal, Québec, Canada.,Centre de Recherche de l'Institut universitaire de gériatrie de Montréal, Montréal, Québec, Canada
| | - Pierre J Blanchet
- Département de stomatologie, Faculté de médecine dentaire, Université de Montréal, Montréal, QC, Canada.,Département de médecine, CHU Montréal, Montréal, QC, Canada
| | - Erwan Bézard
- Université de Bordeaux, Institut des Maladies Neurodégénératives, F-33000 Bordeaux, France.,Centre National de la Recherche Scientifique Unité Mixte de Recherche 5293, Institut des Maladies Neurodégénératives, F-33000 Bordeaux, France
| | - Claude Vincent
- Département de réadaptation, Faculté de médecine, Université Laval, Québec, Québec, Canada
| | - Mélanie Langlois
- Département de médecine, Faculté de médecine, Université Laval, Québec, Québec, Canada
| | - Christian Duval
- Département des Sciences de l'activité physique, Université du Québec à Montréal, Montréal, Québec, Canada.,Département des Sciences de l'activité physique, Université du Québec à Montréal, Montréal, Québec, Canada
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4
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Loya A, Ramachandran V, Nguyen HP. Second primary malignancies in patients with hidradenocarcinoma: a US national database study. Clin Exp Dermatol 2019; 45:453-455. [PMID: 31541477 DOI: 10.1111/ced.14099] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/18/2019] [Indexed: 11/30/2022]
Affiliation(s)
- A Loya
- Baylor College of Medicine, Houston, TX, USA
| | | | - H P Nguyen
- Department of Dermatology, Emory University School of Medicine, Atlanta, GA, USA
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5
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Goubault E, Nguyen HP, Bogard S, Blanchet PJ, Bézard E, Vincent C, Sarna J, Monchi O, Duval C. Remnants of Cardinal Symptoms of Parkinson's Disease, Not Dyskinesia, Are Problematic for Dyskinetic Patients Performing Activities of Daily Living. Front Neurol 2019; 10:256. [PMID: 30967832 PMCID: PMC6440171 DOI: 10.3389/fneur.2019.00256] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 02/26/2019] [Indexed: 11/18/2022] Open
Abstract
Introduction: The impact of levodopa-induced dyskinesia (LID) on the daily lives of patients with Parkinson's disease (PD) remains to be determined. Furthermore, evidence suggests that cardinal motor symptoms of PD may coexist with LID, but their impact on activities of daily living (ADL) relative to LID is not known. This cross-sectional study aimed at determining the effect of LID and cardinal motor symptoms of PD on ADL in patients who were experiencing peak-dose choreic-type LID. Method: One hundred and twenty-one patients diagnosed with PD known to experience choreic-type LID were recruited for the study. Patients were asked to perform a set of ADL. Levels of LID, tremor, bradykinesia, and freezing of gait (FoG) were measured using 17 inertial sensors design to capture full body movements, while rigidity, and postural instability were assessed using clinical evaluations. Cognition was also assessed using the mini-mental state examination. Success criteria were set for each ADL using the time needed to perform the task and errors measured in 69 age-gender-matched healthy controls. Binary logistic regressions were used to identify symptoms influencing success or failure for each activity. Receiver operating characteristic curves were computed on each significant symptom, and Youden indexes were calculated to determine the critical level of symptomatology at which the performance significantly changed. Results: Results show that 97.7% of patients who presented with LID during the experiment also presented with at least one cardinal motor symptom. On average, patients took more time and did more errors during ADL. Multivariate analyses revealed that for the great majority of ADL, LID were not associated with worsening of performance; however, postural instability, tremor, rigidity, and cognitive decline significantly decreased the odds of success. Conclusions: Residual symptoms of PD, such as tremor, rigidity, and postural instability still present at peak-dose were more problematic than LID in the performance of ADL for patients experiencing slight-to-moderate LID. We also found that cognitive decline was associated with decreased performance in certain tasks. Therefore, a strategy using lower doses of medication to manage LID may be counterproductive since it would not address most of these symptoms already present in patients.
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Affiliation(s)
- Etienne Goubault
- Département des Sciences de l'Activité Physique, Université du Québec à Montréal, Montréal, QC, Canada.,Centre de Recherche de l'Institut Universitaire de Gériatrie de Montréal, Montréal, QC, Canada
| | - Hung P Nguyen
- Département des Sciences de l'Activité Physique, Université du Québec à Montréal, Montréal, QC, Canada.,Centre de Recherche de l'Institut Universitaire de Gériatrie de Montréal, Montréal, QC, Canada
| | - Sarah Bogard
- Département des Sciences de l'Activité Physique, Université du Québec à Montréal, Montréal, QC, Canada.,Centre de Recherche de l'Institut Universitaire de Gériatrie de Montréal, Montréal, QC, Canada
| | - Pierre J Blanchet
- Département de Stomatologie, Faculté de Médecine Dentaire, Université de Montréal, Montréal, QC, Canada.,Département de Médecine, CHU Montréal, Montréal, QC, Canada
| | - Erwan Bézard
- Laboratoire de Neurophysiologie, Université de Bordeaux, Institut des Maladies Neurodégénératives, Bordeaux, France.,Unité Mixte de Recherche 5293, Centre National de la Recherche Scientifique, Institut des Maladies Neurodégénératives, Bordeaux, France
| | - Claude Vincent
- Département de Réadaptation, Faculté de Médecine, Université Laval, Quebec, QC, Canada
| | - Justyna Sarna
- Department of Clinical Neurosciences, Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada
| | - Oury Monchi
- Department of Clinical Neurosciences, Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada
| | - Christian Duval
- Département des Sciences de l'Activité Physique, Université du Québec à Montréal, Montréal, QC, Canada.,Centre de Recherche de l'Institut Universitaire de Gériatrie de Montréal, Montréal, QC, Canada
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6
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Sheu JC, Tran J, Rady PL, Dao H, Tyring SK, Nguyen HP. Polyomaviruses of the skin: integrating molecular and clinical advances in an emerging class of viruses. Br J Dermatol 2019; 180:1302-1311. [PMID: 30585627 DOI: 10.1111/bjd.17592] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/21/2018] [Indexed: 12/16/2022]
Abstract
BACKGROUND Human polyomaviruses (HPyVs) are small, nonenveloped, double-stranded DNA viruses that express tumour antigen proteins. Fourteen species of polyomaviruses have been discovered in humans, and since the 2008 discovery of the first cutaneous polyomavirus - Merkel cell polyomavirus (MCPyV) - six more species have been detected in the skin: trichodysplasia spinulosa-associated polyomavirus (TSPyV), HPyV6, HPyV7, HPyV9, HPyV10 and HPyV13. Of these cutaneous species, only MCPyV, TSPyV, HPyV6 and HPyV7 have been definitively associated with diseases of the skin, most commonly in immunocompromised individuals. MCPyV is a predominant aetiology in Merkel cell carcinomas. TSPyV is one of the aetiological factors of trichodysplasia spinulosa. HPyV6 and HPyV7 have been recently linked to pruritic skin eruptions. The roles of HPyV9, HPyV10 and HPyV13 in pathogenesis, if any, are still unknown, but their molecular features have provided some insight into their functional biology. RESULTS In this review, we summarize the known molecular mechanisms, clinical presentation and targeted therapies of each of the eight cutaneous HPyVs. CONCLUSIONS We hope that heightened awareness and clinical recognition of HPyVs will lead to increased reports of HPyV-associated diseases and, consequently, a more robust understanding of how to diagnose and treat these conditions.
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Affiliation(s)
- J C Sheu
- Department of Dermatology, Baylor College of Medicine, Houston, TX, U.S.A
| | - J Tran
- Department of Dermatology, Baylor College of Medicine, Houston, TX, U.S.A
| | - P L Rady
- Department of Dermatology, McGovern Medical School, Houston, TX, U.S.A
| | - H Dao
- Department of Dermatology, Baylor College of Medicine, Houston, TX, U.S.A
| | - S K Tyring
- Department of Dermatology, McGovern Medical School, Houston, TX, U.S.A
| | - H P Nguyen
- Department of Dermatology, Baylor College of Medicine, Houston, TX, U.S.A.,Department of Dermatology, McGovern Medical School, Houston, TX, U.S.A.,Department of Dermatology, Emory University School of Medicine, Atlanta, GA, U.S.A
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Rippinger N, Haun MW, Fischer C, Rhiem K, Hübbel A, Grill S, Kiechle M, Cremer FW, Kast K, Nguyen HP, Ditsch N, Kratz P, Pfister S, Pajtler KW, Speiser D, Seitz S, Glimm H, Maatouk I, Hahne A, Sutter C, Schmutzler RK, Dikow N, Sohn C, Schott S. Prophylactic surgery among germline TP53 mutation carriers in Germany – a multicentric observational study. Geburtshilfe Frauenheilkd 2018. [DOI: 10.1055/s-0038-1671357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
Affiliation(s)
- N Rippinger
- University Hospital Heidelberg, Department of Gynaecology and Obstetrics, Heidelberg, Deutschland
| | - MW Haun
- University Hospital Heidelberg, Department of General Internal Medicine and Psychosomatics, Heidelberg, Deutschland
| | - C Fischer
- University Hospital Heidelberg, Institute of Human Genetics, Heidelberg, Deutschland
| | - K Rhiem
- University Hospital of Cologne, Department of Gynaecology and Obstetrics, Cologne, Deutschland
| | - A Hübbel
- University Hospital of Cologne, Department of Gynaecology and Obstetrics, Cologne, Deutschland
| | - S Grill
- Klinikum rechts der Isar; Technical University of Munich, Department of Gynaecology and Centre for Hereditary Breast and Ovarian Cancer, Munich, Deutschland
| | - M Kiechle
- Klinikum rechts der Isar; Technical University of Munich, Department of Gynaecology and Centre for Hereditary Breast and Ovarian Cancer, Munich, Deutschland
| | - FW Cremer
- SYNLAB Centre for Human Genetics, Mannheim, Deutschland
| | - K Kast
- Medical Faculty and University Hospital Carl Gustav Carus, Technical University Dresden, Department of Gynaecology and Obstetrics, Dresden, Deutschland
- National Center for Tumor Diseases, Partner Site Dresden, Dresden, Deutschland
- German Cancer Consortium (DKTK) and German Cancer Research Center (DKFZ), Dresden, Deutschland
| | - HP Nguyen
- University Hospital of Tuebingen, Institute of Medical Genetics and Applied Genomics, Tuebingen, Deutschland
- University of Bochum, Department of Human Genetics, Bochum, Deutschland
| | - N Ditsch
- Ludwig-Maximilians University, University Hospital of Munich, Department of Gynaecology and Obstetrics, Munich, Deutschland
| | - P Kratz
- Hannover Medical School, Paediatric Haematology and Oncology, Hannover, Deutschland
| | - S Pfister
- Hopp Children's Cancer Centre at the NCT Heidelberg (KiTZ), Heidelberg, Deutschland
- German Cancer Consortium (DKTK) and German Cancer Research Center (DKFZ), Division of Paediatric Neurooncology, Heidelberg, Deutschland
- University Hospital Heidelberg, Department of Paediatric Oncology, Hematology and Immunology, Heidelberg, Deutschland
| | - KW Pajtler
- Hopp Children's Cancer Centre at the NCT Heidelberg (KiTZ), Heidelberg, Deutschland
- German Cancer Consortium (DKTK) and German Cancer Research Center (DKFZ), Division of Paediatric Neurooncology, Heidelberg, Deutschland
- University Hospital Heidelberg, Department of Paediatric Oncology, Hematology and Immunology, Heidelberg, Deutschland
| | - D Speiser
- University Hospital Charité Berlin, Department of Gynaecology and Obstetrics, Berlin, Deutschland
| | - S Seitz
- University Medical Centre Regensburg, Department of Gynaecology and Obstetrics, Regensburg, Deutschland
| | - H Glimm
- National Center for Tumor Diseases (NCT), Heidelberg, Deutschland
| | - I Maatouk
- University Hospital Heidelberg, Department of General Internal Medicine and Psychosomatics, Heidelberg, Deutschland
| | - A Hahne
- BRCA Network, Hannover, Deutschland
| | - C Sutter
- University Hospital Heidelberg, Department of Human Genetics, Heidelberg, Deutschland
| | - RK Schmutzler
- University Hospital of Cologne, Department of Gynaecology and Obstetrics, Cologne, Deutschland
| | - N Dikow
- University Hospital Heidelberg, Department of Human Genetics, Heidelberg, Deutschland
| | - C Sohn
- University Hospital Heidelberg, Department of Gynaecology and Obstetrics, Heidelberg, Deutschland
| | - S Schott
- University Hospital Heidelberg, Department of Gynaecology and Obstetrics, Heidelberg, Deutschland
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Goubault E, Nguyen HP, Ayachi FS, Bogard S, Duval C. Do Bradykinesia and Tremor Interfere in Voluntary Movement of Essential Tremor Patients? Preliminary Findings. Tremor Other Hyperkinet Mov (N Y) 2017; 7:459. [PMID: 28690920 PMCID: PMC5499257 DOI: 10.7916/d822319x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Accepted: 05/23/2017] [Indexed: 12/02/2022]
Abstract
Background The aim of this study was to determine whether tremor and bradykinesia impacted a dexterous activity performed by patients with essential tremor (ET). Methods Core bradykinesia was assessed in 27 controls and 15 patients with ET using a rapid alternating movement (RAM) task. Then, participants performed a “counting money” counting tasks while equipped with inertial measurement units to detect and quantify tremor during movement. The time required to perform subsections of the tasks and the rate of failure (errors) were compared between groups using Mann–Whitney U tests and a chi-square test, respectively. Results Patients with ET presented with significant bradykinesia during the RAM task and had more tremor during the counting money task. However, the time required to perform the task and rate of failure were similar between groups. Discussion Results show that even though bradykinesia was detected during fast movements, and that tremor was present during a task requiring dexterity, both symptoms did not interfere with the performance of patients with ET. This pilot study suggests that there may be a threshold at which tremor will become problematic. Determining this threshold for a wide range of daily activities may help determine when it is appropriate to initiate treatment for patients with ET.
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Affiliation(s)
- Etienne Goubault
- Département des Sciences de l'activité physique Université du Québec à Montréal, Montréal, Québec, Canada.,Centre de Recherche de l'Institut Universitaire de Gériatrie de Montréal, Montréal, Québec, Canada
| | - Hung P Nguyen
- Département des Sciences de l'activité physique Université du Québec à Montréal, Montréal, Québec, Canada.,Centre de Recherche de l'Institut Universitaire de Gériatrie de Montréal, Montréal, Québec, Canada
| | - Fouaz S Ayachi
- Département des Sciences de l'activité physique Université du Québec à Montréal, Montréal, Québec, Canada.,Centre de Recherche de l'Institut Universitaire de Gériatrie de Montréal, Montréal, Québec, Canada
| | - Sarah Bogard
- Département des Sciences de l'activité physique Université du Québec à Montréal, Montréal, Québec, Canada.,Centre de Recherche de l'Institut Universitaire de Gériatrie de Montréal, Montréal, Québec, Canada
| | - Christian Duval
- Département des Sciences de l'activité physique Université du Québec à Montréal, Montréal, Québec, Canada.,Centre de Recherche de l'Institut Universitaire de Gériatrie de Montréal, Montréal, Québec, Canada
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Nguyen HP, Rivers JK. Actikerall™ (5-Fluorouracil 0.5% and Salicylic Acid 10%) Topical Solution for Patient-directed Treatment of Actinic Keratoses. Skin Therapy Lett 2016; 21:1-3. [PMID: 27223248] [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: 06/05/2023]
Abstract
Actinic keratosis (AK), a common cutaneous lesion with the potential to transform into squamous cell carcinoma, has traditionally been treated with ablative and/or surgical procedures. Recently, a topical formulation combining 0.5% 5-fluorouracil with 10% salicylic acid (5-FU-SA) was introduced in Europe under the trade name Actikerall™ for the treatment of grade I/II AKs. In a single randomized phase III trial, 5-FU-SA was shown to be superior to diclofenac 3% gel in hyaluronic acid, as measured by the histological clearance of one defined lesion (72% vs. 59.1%) and by complete clinical clearance (55.4% vs. 32.0%). 5-FU-SA should be applied once daily to a total area of up to 25 cm(2), which may include the lesion(s) and a small area of surrounding skin (rim of healthy skin should not exceed 0.5 cm), for up to 12 weeks. The most common side effects are local inflammation and pruritus at the application site, and no serious adverse effects have been reported to date. Now commercially available in Canada, 5-FU-SA represents a patientapplied therapeutic option for the treatment of both overt and subclinical AKs.
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Affiliation(s)
- H P Nguyen
- MD/MBA/MPH Candidate at Yale University, New Haven, CT, USA; Baylor College of Medicine, Houston, TX, USA
| | - J K Rivers
- Department of Dermatology and Skin Science, University of British Columbia, Vancouver, BC, Canada; Pacific Dermaesthetics, Vancouver, BC, Canada
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10
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Ayachi FS, Nguyen HP, Lavigne-Pelletier C, Goubault E, Boissy P, Duval C. Wavelet-based algorithm for auto-detection of daily living activities of older adults captured by multiple inertial measurement units (IMUs). Physiol Meas 2016; 37:442-61. [DOI: 10.1088/0967-3334/37/3/442] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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11
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Wu JH, Nguyen HP, Rady PL, Tyring SK. Molecular insight into the viral biology and clinical features of trichodysplasia spinulosa. Br J Dermatol 2015; 174:490-8. [PMID: 26479880 DOI: 10.1111/bjd.14239] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/14/2015] [Indexed: 02/03/2023]
Abstract
Trichodysplasia spinulosa (TS) is a disfiguring skin disease that occurs most frequently in patients receiving immunosuppressive therapies, and is thus frequently associated with organ transplantation. TS is characterized clinically by folliculocentric papular eruption, keratin spine formation and development of leonine face; and histologically by expansion of the inner root sheath epithelium and high expression of the proliferative marker Ki-67. Recent discovery of the TS-associated polyomavirus (TSPyV) and emerging studies demonstrating the role of TSPyV tumour antigens in cell proliferation pathways have opened a new corridor for research on TS. In this brief review, we summarize the clinical and histological features of TS and evaluate the current options for therapy. Furthermore, we address the viral aetiology of the disease and explore the mechanisms by which TSPyV may influence TS development and progression. As reports of TS continue to rise, clinician recognition of TS, as well as accompanying research on its underlying pathogenesis and therapeutic options, is becoming increasingly important. It is our hope that heightened clinical suspicion for TS will increase rates of diagnosis and will galvanize both molecular and clinical interest in this disease.
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Affiliation(s)
- J H Wu
- Department of Dermatology, University of Texas Health Science Center at Houston, Houston, TX, U.S.A.,Baylor College of Medicine, Houston, TX, U.S.A
| | - H P Nguyen
- Department of Dermatology, University of Texas Health Science Center at Houston, Houston, TX, U.S.A.,Baylor College of Medicine, Houston, TX, U.S.A
| | - P L Rady
- Department of Dermatology, University of Texas Health Science Center at Houston, Houston, TX, U.S.A
| | - S K Tyring
- Department of Dermatology, University of Texas Health Science Center at Houston, Houston, TX, U.S.A
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12
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Nguyen HP, Katta R. Sugar Sag: Glycation and the Role of Diet in Aging Skin. Skin Therapy Lett 2015; 20:1-5. [PMID: 27224842] [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: 06/05/2023]
Abstract
First described in the context of diabetes, advanced glycation end products (AGEs) are formed through a type of non-enzymatic reaction called glycation. Increased accumulation of AGEs in human tissue has now been associated with end stage renal disease, chronic obstructive pulmonary disease, and, recently, skin aging. Characteristic findings of aging skin, including decreased resistance to mechanical stress, impaired wound healing, and distorted dermal vasculature, can be in part attributable to glycation. Multiple factors mediate cutaneous senescence, and these factors are generally characterized as endogenous (e.g., telomere shortening) or exogenous (e.g., ultraviolet radiation exposure). Interestingly, AGEs exert their pathophysiological effects from both endogenous and exogenous routes. The former entails the consumption of sugar in the diet, which then covalently binds an electron from a donor molecule to form an AGE. The latter process mostly refers to the formation of AGEs through cooking. Recent studies have revealed that certain methods of food preparation (i.e., grilling, frying, and roasting) produce much higher levels of AGEs than water-based cooking methods such as boiling and steaming. Moreover, several dietary compounds have emerged as promising candidates for the inhibition of glycation-mediated aging. In this review, we summarize the evidence supporting the critical role of glycation in skin aging and highlight preliminary studies on dietary strategies that may be able to combat this process.
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Affiliation(s)
- H P Nguyen
- Department of Dermatology, Baylor College of Medicine, Houston, TX, USA
| | - R Katta
- Department of Dermatology, Baylor College of Medicine, Houston, TX, USA
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13
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Nguyen HP, Ayachi F, Lavigne-Pelletier C, Blamoutier M, Rahimi F, Boissy P, Jog M, Duval C. Auto detection and segmentation of physical activities during a Timed-Up-and-Go (TUG) task in healthy older adults using multiple inertial sensors. J Neuroeng Rehabil 2015; 12:36. [PMID: 25885438 PMCID: PMC4403848 DOI: 10.1186/s12984-015-0026-4] [Citation(s) in RCA: 27] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Accepted: 03/20/2015] [Indexed: 11/30/2022] Open
Abstract
Background Recently, much attention has been given to the use of inertial sensors for remote monitoring of individuals with limited mobility. However, the focus has been mostly on the detection of symptoms, not specific activities. The objective of the present study was to develop an automated recognition and segmentation algorithm based on inertial sensor data to identify common gross motor patterns during activity of daily living. Method A modified Time-Up-And-Go (TUG) task was used since it is comprised of four common daily living activities; Standing, Walking, Turning, and Sitting, all performed in a continuous fashion resulting in six different segments during the task. Sixteen healthy older adults performed two trials of a 5 and 10 meter TUG task. They were outfitted with 17 inertial motion sensors covering each body segment. Data from the 10 meter TUG were used to identify pertinent sensors on the trunk, head, hip, knee, and thigh that provided suitable data for detecting and segmenting activities associated with the TUG. Raw data from sensors were detrended to remove sensor drift, normalized, and band pass filtered with optimal frequencies to reveal kinematic peaks that corresponded to different activities. Segmentation was accomplished by identifying the time stamps of the first minimum or maximum to the right and the left of these peaks. Segmentation time stamps were compared to results from two examiners visually segmenting the activities of the TUG. Results We were able to detect these activities in a TUG with 100% sensitivity and specificity (n = 192) during the 10 meter TUG. The rate of success was subsequently confirmed in the 5 meter TUG (n = 192) without altering the parameters of the algorithm. When applying the segmentation algorithms to the 10 meter TUG, we were able to parse 100% of the transition points (n = 224) between different segments that were as reliable and less variable than visual segmentation performed by two independent examiners. Conclusions The present study lays the foundation for the development of a comprehensive algorithm to detect and segment naturalistic activities using inertial sensors, in hope of evaluating automatically motor performance within the detected tasks.
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Affiliation(s)
- Hung P Nguyen
- Département de Kinanthropologie, Université du Québec à Montréal, C.P. 8888, succursale Centre-Ville, Montréal, H3C 3P8, Québec, Canada.
| | - Fouaz Ayachi
- Département de Kinanthropologie, Université du Québec à Montréal, C.P. 8888, succursale Centre-Ville, Montréal, H3C 3P8, Québec, Canada.
| | - Catherine Lavigne-Pelletier
- Département de Kinanthropologie, Université du Québec à Montréal, C.P. 8888, succursale Centre-Ville, Montréal, H3C 3P8, Québec, Canada.
| | - Margaux Blamoutier
- Faculté des Sciences, Université du Québec à Montréal, Montreal, Canada.
| | - Fariborz Rahimi
- Electrical Engineering Department, University of Bonab, Bonab, East Azerbaijan, Iran.
| | - Patrick Boissy
- Department of Surgery, Orthopaedic Division, Faculty of Medicine and Health Sciences, Université of Sherbrooke, Quebec, Canada.
| | - Mandar Jog
- London Health Sciences Center University Hospital, Ontario, Canada.
| | - Christian Duval
- Département de Kinanthropologie, Université du Québec à Montréal, C.P. 8888, succursale Centre-Ville, Montréal, H3C 3P8, Québec, Canada.
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14
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Aalderink MT, Nguyen HP, Kass PH, Arzi B, Verstraete FJM. Dental and Temporomandibular Joint Pathology of the Eastern Pacific Harbour Seal (Phoca vitulina richardii). J Comp Pathol 2015; 152:335-44. [PMID: 25824118 DOI: 10.1016/j.jcpa.2015.02.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [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: 10/30/2014] [Revised: 02/02/2015] [Accepted: 02/06/2015] [Indexed: 10/23/2022]
Abstract
Skulls from 214 Eastern Pacific harbour seals (Phoca vitulina richardii) were examined macroscopically according to predefined criteria. The museum specimens were acquired from strandings along the west coast of the USA between 1909 and 2014. Ninety-eight skulls (45.8%) were from male animals, 108 (50.5%) from female animals and eight (3.7%) from animals of unknown sex. Their age varied from neonate to adult, with 101 adult animals (47.2%), 93 juvenile animals (43.5%) and 20 neonatal animals (9.3%). The majority of teeth were available for examination (90.0%); 7.5% of teeth were absent artefactually, 2.3% were deemed absent due to acquired tooth loss and 0.2% were absent congenitally. Males were no more likely than females to have either acquired tooth loss (P = 0.492) or congenitally absent teeth (P = 0.494). Adults had significantly more acquired tooth loss than juveniles (P <0.0001). All teeth were normal in morphology, except for four teeth from one skull that exhibited macrodontia. An unusual number of roots were found in most maxillary molar teeth; three roots were counted on six maxillary molar teeth and almost all other maxillary molar teeth available for examination had a fused root. Only 26 maxillary molar teeth exhibited two roots. Supernumerary teeth were associated with 13 normal teeth in nine specimens. The most common sites associated with supernumerary teeth were the left and right mandibular first premolar teeth (53.9% of all supernumerary teeth). No persistent deciduous teeth were found in any of the juvenile or adult specimens. Of the total number of teeth available for examination, 22.1% were abraded; six adult specimens showed attrition/abrasion on all of their teeth present. Adults were found to have a greater prevalence of abraded teeth than juveniles (P <0.0001). No significant difference was found in the appearance of attrition/abrasion between males and females (P = 0.518). Tooth fractures were uncommon, affecting 11 teeth (0.2%) in seven animals. Periapical lesions were found in four skulls (2.1% of the total number of specimens). None of the specimens showed signs of enamel hypoplasia. More than half (55.6%) of alveoli, either with or without teeth, showed signs of alveolar bony changes consistent with periodontitis. A total of 178 specimens (91.8%) had at least one tooth associated with mild periodontitis. Lesions consistent with temporomandibular joint osteoarthritis (TMJ-OA) were found in 67 specimens (34.5%). The most common articular surface to be affected was the left mandibular fossa of the temporal bone, with lesions in 44 cases (32.8% of all lesions). In 13 specimens (6.7%) all articular surfaces were affected. Both periodontal disease and TMJ-OA were significantly more common in adults than in juveniles (P <0.0001). Although the significance of the high incidence of periodontitis and TMJ-OA in the Eastern Pacific harbor seal remains unknown, the occurrence and severity of these diseases as found in this study may play an important role in the morbidity and mortality of this species.
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Affiliation(s)
- M T Aalderink
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, CA, USA
| | - H P Nguyen
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, CA, USA
| | - P H Kass
- Department of Population Health and Reproduction, School of Veterinary Medicine, University of California, Davis, CA, USA
| | - B Arzi
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, CA, USA
| | - F J M Verstraete
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, CA, USA.
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15
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Nguyen HP, Stiegel KR, Downing C, Stiegel KR. Recent approval of Xerese in Canada: 5% acyclovir and 1% hydrocortisone topical cream in the treatment of herpes labialis. Skin Therapy Lett 2014; 19:5-8. [PMID: 25188362] [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: 06/03/2023]
Abstract
Herpes labialis is a frequently occurring viral infection of the lips and oral mucosa. Recurring lesions are induced by viral reactivation and replication, but the symptoms leading to morbidity, such as pain and inflammation, are immune-mediated. The introduction of 5% acyclovir/1% hydrocortisone in a topical cream (Xerese™) represents a therapeutic strategy directed at both of these pathogenic processes. Applied at the onset of prodromal symptoms, this combination treatment has a good safety profile and is more effective in reducing healing time than antiviral or anti-inflammatory agents alone. Although it was US FDA-approved for herpes labialis in 2009, Xerese™ has only recently been approved for use in Canada in October 2013. Herein, we review the basic science and clinical studies that support the efficacy of this topical combination acyclovir-hydrocortisone product in treating herpes labialis and examine its safety profile, as well as touch upon other therapies that have been shown to be effective in treating this common viral condition.
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Affiliation(s)
- H P Nguyen
- Department of Dermatology, Baylor College of Medicine, Houston, TX, USA; Department of Dermatology, University of Texas Medical School at Houston, Houston, TX, USA; Center for Clinical Studies, Houston, TX, USA
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16
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Nguyen HP, Dingwell JB. Proximal versus distal control of two-joint planar reaching movements in the presence of neuromuscular noise. J Biomech Eng 2013; 134:061007. [PMID: 22757504 DOI: 10.1115/1.4006811] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Determining how the human nervous system contends with neuro-motor noise is vital to understanding how humans achieve accurate goal-directed movements. Experimentally, people learning skilled tasks tend to reduce variability in distal joint movements more than in proximal joint movements. This suggests that they might be imposing greater control over distal joints than proximal joints. However, the reasons for this remain unclear, largely because it is not experimentally possible to directly manipulate either the noise or the control at each joint independently. Therefore, this study used a 2 degree-of-freedom torque driven arm model to determine how different combinations of noise and/or control independently applied at each joint affected the reaching accuracy and the total work required to make the movement. Signal-dependent noise was simultaneously and independently added to the shoulder and elbow torques to induce endpoint errors during planar reaching. Feedback control was then applied, independently and jointly, at each joint to reduce endpoint error due to the added neuromuscular noise. Movement direction and the inertia distribution along the arm were varied to quantify how these biomechanical variations affected the system performance. Endpoint error and total net work were computed as dependent measures. When each joint was independently subjected to noise in the absence of control, endpoint errors were more sensitive to distal (elbow) noise than to proximal (shoulder) noise for nearly all combinations of reaching direction and inertia ratio. The effects of distal noise on endpoint errors were more pronounced when inertia was distributed more toward the forearm. In contrast, the total net work decreased as mass was shifted to the upper arm for reaching movements in all directions. When noise was present at both joints and joint control was implemented, controlling the distal joint alone reduced endpoint errors more than controlling the proximal joint alone for nearly all combinations of reaching direction and inertia ratio. Applying control only at the distal joint was more effective at reducing endpoint errors when more of the mass was more proximally distributed. Likewise, controlling the distal joint alone required less total net work than controlling the proximal joint alone for nearly all combinations of reaching distance and inertia ratio. It is more efficient to reduce endpoint error and energetic cost by selectively applying control to reduce variability in the distal joint than the proximal joint. The reasons for this arise from the biomechanical configuration of the arm itself.
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Affiliation(s)
- Hung P Nguyen
- Department of Mechanical Engineering, University of Texas at Austin, Austin, TX 78712, USA
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Kelp A, Koeppen AH, Petrasch-Parwetz E, Calaminus C, Bauer C, Bauer P, Riess O, Nguyen HP. C10 Generation and characterisation of a transgenic rat model of huntington's disease-like 4 (HDL4), also called spinocerebellar ataxia type 17 (SCA17). J Neurol Psychiatry 2012. [DOI: 10.1136/jnnp-2012-303524.57] [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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Futter C, Metzger S, Saukko M, Tong L, Riess O, Nguyen HP. E04 Autophagy-related gene Atg7 is a genetic modifier of AAO specific in the Italian population. J Neurol Neurosurg Psychiatry 2012. [DOI: 10.1136/jnnp-2012-303524.63] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Magg J, Clemens L, Portal E, Pahnke G, Kelp A, Schaller M, Mains R, Riess O, Nguyen HP. B12 The influence of kalirin-7 deficiency on the phenotype of YAC128 mice. J Neurol Neurosurg Psychiatry 2012. [DOI: 10.1136/jnnp-2012-303524.28] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Jansson E, Massioui NE, Doyère V, Yo L, Riess O, Nguyen HP. C07 Skinner box test for strategy shifting impairments in BACHD rats. J Neurol Psychiatry 2012. [DOI: 10.1136/jnnp-2012-303524.54] [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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Brauner H, Metzger S, Riess O, Nguyen HP. E01 Analysis of mitochondrial genes as potential genetic modifiers of the age-at-onset in Huntington disease. J Neurol Psychiatry 2012. [DOI: 10.1136/jnnp-2012-303524.60] [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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Yu L, Parwez EP, Osmand AP, Redensek A, Metzger S, Clemens LE, Park L, Howland D, Calaminus C, Gu X, Pichlern B, Yang XW, Riess O, Nguyen HP. C05 A novel BACHD transgenic rat exhibits characteristic neuropathological features of Huntington disease. J Neurol Neurosurg Psychiatry 2012. [DOI: 10.1136/jnnp-2012-303524.52] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Abada Y, Nguyen HP, Schreiber R, Ellenbroek B. C08 Motor, cognitive and emotional investigation in a novel rat model of Huntington's disease. J Neurol Neurosurg Psychiatry 2012. [DOI: 10.1136/jnnp-2012-303524.55] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Clemens LE, Wlodkowski TT, Eckmann J, Eckert S, Michaud M, Yu L, Portal E, Bordet T, Pruss R, Eckert GP, Riess O, Nguyen HP. P06 Olesoxime improves specific features of the HD pathology. J Neurol Neurosurg Psychiatry 2012. [DOI: 10.1136/jnnp-2012-303524.168] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Clemens LE, Grierson A, De Vos K, Riess O, Nguyen HP. A14 Fast axonal transport of mitochondria is altered in Huntington's disease. J Neurol Neurosurg Psychiatry 2010. [DOI: 10.1136/jnnp.2010.222570.14] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Yu L, Metzger S, Clemens LE, Ehrismann J, Ott T, Gu X, Gray M, Yang W, Osmand AP, Riess O, Nguyen HP. A28 Accumulation and aggregation of human mutant huntingtin and neuron atrophy in BAC-HD transgenic rat. J Neurol Neurosurg Psychiatry 2010. [DOI: 10.1136/jnnp.2010.222570.28] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Magg J, Portal E, Kelp A, Ehrismann J, Pahnke G, Riess O, Nguyen HP. A33 Behavioural evaluation of Huntington's disease mouse models with an automated home cage system. J Neurol Neurosurg Psychiatry 2010. [DOI: 10.1136/jnnp.2010.222570.33] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Metzger S, Van Che H, Deyle C, Riess O, Nguyen HP. C07 Localisation of sequence variations in PGC-1α influence their modifying effect in Huntington's disease. J Neurol Neurosurg Psychiatry 2010. [DOI: 10.1136/jnnp.2010.222588.7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Tsai YC, Soehn AS, Metzger S, Nguyen HP. C10 Duo as a potential genetic modifier of Huntington's disease. J Neurol Psychiatry 2010. [DOI: 10.1136/jnnp.2010.222588.10] [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: 11/03/2022]
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Gellerich FN, Gizatullina Z, Nguyen HP, Trumbeckaite S, Nuber S, Jucker M, Striggow F. Mechanisms for regulation of brain mitochondria by extramitochondrial Ca2+ as new targets of neurodegeneration. KLIN NEUROPHYSIOL 2010. [DOI: 10.1055/s-0030-1251023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Nguyen HP, Riess A, Krüger M, Bauer P, Singer S, Schneider M, Enders H, Dufke A. Mosaic trisomy 21/monosomy 21 in a living female infant. Cytogenet Genome Res 2009; 125:26-32. [PMID: 19617693 DOI: 10.1159/000218745] [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] [Accepted: 02/09/2009] [Indexed: 11/19/2022] Open
Abstract
Many autosomal monosomies are presumed to end in arrested growth in the first few mitoses, prior even to the time of implantation, with possibly some proceeding to the stage of occult abortion. The single exception may be monosomy 21, although this has been questioned, with most earlier reports of monosomy 21 recently re-interpreted as being due to an unbalanced translocation involving chromosome 21. Here we report a female infant with a mosaic trisomy 21/monosomy 21 karyotype. While the karyotype 46,XX,i(21)(q10) is detected in all metaphases investigated in lymphocytes, mosaicism with the karyotype 46,XX,i(21)(q10)[31]/45,XX, -21[12] is seen in fibroblasts from a skin biopsy. Dysmorphic facial features and multiple malformations remarkably resemble cases of monosomy 21 that have been described in the literature. This suggests a dominant phenotypic effect of loss of one chromosome 21. Detailed clinical description, results of gene dosage studies, and cytogenetic analysis will be presented.
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Affiliation(s)
- H P Nguyen
- Department of Medical Genetics, University of Tuebingen, Tuebingen, Germany.
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Morse LR, Nguyen HP, Jain N, Williams S, Tun CG, Battaglino RA, Stashenko P, Garshick E. Age and motor score predict osteoprotegerin level in chronic spinal cord injury. J Musculoskelet Neuronal Interact 2008; 8:50-57. [PMID: 18398265 PMCID: PMC2365904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
OBJECTIVE Individuals with spinal cord injury (SCI) develop a severe form of osteoporosis below the level of injury that is poorly understood. We conducted a preliminary investigation to assess whether circulating markers of bone turnover and circulating RANKL/OPG levels are related to the severity of SCI, aging, or to differences in mobility (i.e., walking or using a wheelchair). METHODS Sixty-four caucasian men >or=1.6 years since injury selected based on locomotive mode provided blood samples and completed a health questionnaire at the VA Boston Healthcare System from 10/2003 to 6/2005. Plasma sRANKL, osteoprotegerin (OPG), osteocalcin and carboxyterminal telopeptide of type I collagen (CTx) levels were determined. RESULTS Increasing age was significantly associated with increased OPG and CTx. Injury severity was predictive of OPG levels, and adjusting for age, participants with cervical motor complete and ASIA C SCI (n=11) had significantly lower mean OPG (46.1 pg/ml) levels than others (63.4 pg/ml). Locomotive mode was not associated with differences in bone markers. CONCLUSIONS Severe cervical spinal cord injury is associated with decreased circulating OPG levels placing these patients at risk for accelerated bone loss that appears unrelated to locomotive mode.
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Affiliation(s)
- L R Morse
- Department of Physical Medicine and Rehabilitation, Harvard Medical School and Spaulding Rehabilitation Hospital, Boston, Massachusetts 02118, USA.
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Grundmann K, Reischmann B, Vanhoutte G, Hübener J, Teismann P, Hauser TK, Bonin M, Wilbertz J, Horn S, Nguyen HP, Kuhn M, Chanarat S, Wolburg H, Van der Linden A, Riess O. Overexpression of human wildtype torsinA and human DeltaGAG torsinA in a transgenic mouse model causes phenotypic abnormalities. Neurobiol Dis 2007; 27:190-206. [PMID: 17601741 DOI: 10.1016/j.nbd.2007.04.015] [Citation(s) in RCA: 109] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2007] [Revised: 04/13/2007] [Accepted: 04/27/2007] [Indexed: 11/30/2022] Open
Abstract
Primary torsion dystonia is an autosomal-dominant inherited movement disorder. Most cases are caused by an in-frame deletion (GAG) of the DYT1 gene encoding torsinA. Reduced penetrance and phenotypic variability suggest that alteration of torsinA amino acid sequence is necessary but not sufficient for development of clinical symptoms and that additional factors must contribute to the factual manifestation of the disease. We generated 4 independent transgenic mouse lines, two overexpressing human mutant torsinA and two overexpressing human wildtype torsinA using a strong murine prion protein promoter. Our data provide for the first time in vivo evidence that not only mutant torsinA is detrimental to neuronal cells but that also wildtype torsinA can lead to neuronal dysfunction when overexpressed at high levels. This hypothesis is supported by (i) neuropathological findings, (ii) neurochemistry, (iii) behavioral abnormalities and (iv) DTI-MRI analysis.
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Affiliation(s)
- K Grundmann
- Department of Medical Genetics, University of Tuebingen, Calwerstr. 7, 72076 Tuebingen, Germany.
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Wallock-Montelius LM, Villanueva JA, Chapin RE, Conley AJ, Nguyen HP, Ames BN, Halsted CH. Chronic ethanol perturbs testicular folate metabolism and dietary folate deficiency reduces sex hormone levels in the Yucatan micropig. Biol Reprod 2006; 76:455-65. [PMID: 17151354 DOI: 10.1095/biolreprod.106.053959] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
Although alcoholism causes changes in hepatic folate metabolism that are aggravated by folate deficiency, male reproductive effects have never been studied. We evaluated changes in folate metabolism in the male reproductive system following chronic ethanol consumption and folate deficiency. Twenty-four juvenile micropigs received folate-sufficient (FS) or folate-depleted (FD) diets or the same diets containing 40% of energy as ethanol (FSE or FDE) for 14 wk, and the differences between the groups were determined by ANOVA. Chronic ethanol consumption (FSE and FDE compared with FS and FD groups) reduced testis and epididymis weights, testis sperm concentrations, and total sperm counts and circulating FSH levels. Folate deficiency (FD and FDE compared with FS and FSE groups) reduced circulating testosterone, estradiol and LH levels, and also testicular 17,20-lyase and aromatase activities. There was histological evidence of testicular lesions and incomplete progression of spermatogenesis in all treated groups relative to the FS control, with the FDE group being the most affected. Chronic ethanol consumption increased testis folate concentrations and decreased testis methionine synthase activity, whereas folate deficiency reduced total testis folate levels and increased methionine synthase activity. In all pigs combined, testicular methionine synthase activity was negatively associated with circulating estradiol, LH and FSH, and 17,20-lyase activity after controlling for ethanol, folate deficiency, and their interaction. Thus, while chronic ethanol consumption primarily impairs spermatogenesis, folate deficiency reduces sex hormones, and the two treatments have opposite effects on testicular folate metabolism. Furthermore, methionine synthase may influence the hormonal regulation of spermatogenesis.
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Affiliation(s)
- Lynn M Wallock-Montelius
- Children's Hospital Oakland Research Institute, Oakland, California 94609, and Department of Internal Medicine, University of California, Davis 95616, USA.
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Nguyen HP, Seto NO, Brade L, Kosma P, Brade H, Evans SV. Crystallization and preliminary X-ray diffraction analysis of two homologous antigen-binding fragments in complex with different carbohydrate antigens. Acta Crystallogr D Biol Crystallogr 2001; 57:1872-6. [PMID: 11717502 DOI: 10.1107/s0907444901014536] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2001] [Accepted: 09/06/2001] [Indexed: 11/10/2022]
Abstract
The antigen-binding fragments (Fab) of two murine monoclonal antibodies (mAb) S25-2 and S45-18, specific for carbohydrate epitopes in the lipopolysacchaide of the bacterial family Chlamydiaceae, have been crystallized in the presence and absence of synthetic oligosaccharides corresponding to their respective haptens. Crystals of both Fabs show different morphology depending on the presence of antigens. The sequence of mAb S45-18 was determined and shows a remarkable homology to that reported for mAb S25-2. These crystals offer an unparalleled opportunity to compare the structure and modes of binding of two homologous antibodies to similar but distinct carbohydrate epitopes.
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Affiliation(s)
- H P Nguyen
- Department of Biochemistry, Microbiology and Immunology, University of Ottawa, 451 Smyth Road, Ottawa, Ontario K1H 8M5, Canada.
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Kask A, Nguyen HP, Pabst R, von Hörsten S. Factors influencing behavior of group-housed male rats in the social interaction test: focus on cohort removal. Physiol Behav 2001; 74:277-82. [PMID: 11714489 DOI: 10.1016/s0031-9384(01)00587-x] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.4] [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: 10/18/2022]
Abstract
The rat social interaction (SI) test is used widely to measure anxiety-like behavior, yet the influence of various factors such as testing time, pre-experimental manipulations (transport stress), and testing of animals from the same cage (cohort removal, CR) on SI has not been systematically studied. We measured SI behavior of male triad-housed Wistar rats in a novel dimly lit arena (low light unfamiliar, LU) and found that SI time is higher in the beginning of the activity (dark) phase when compared with SI time in first half of the light phase. Furthermore, SI time is significantly increased by habituation of animals to the testing room during light phase, but this intervention has no effect in early dark phase when SI behavior is already maximal. Sequential removal of rats from the home cage led to the stress-like behavioral and physiological consequences. Rats removed in the last position had shorter SI time and higher body temperature. These data demonstrate that SI is higher during early dark vs. early light phase and confirm that CR has anxiogenic-like effects in rats. We conclude that the usage of sequentially removed group-housed rats in behavioral tests can be a source for considerable variation due to anxiety that develops in animals remaining in the cage. On the other hand, CR may be a useful method to study behavioral/neurochemical mechanisms of psychogenic stress in rats.
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Affiliation(s)
- A Kask
- Department of Pharmacology, Faculty of Medicine, University of Tartu, Ravila 19, Tartu 50090, Estonia.
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Kask A, Nguyen HP, Pabst R, Von Hörsten S. Neuropeptide Y Y1 receptor-mediated anxiolysis in the dorsocaudal lateral septum: functional antagonism of corticotropin-releasing hormone-induced anxiety. Neuroscience 2001; 104:799-806. [PMID: 11440811 DOI: 10.1016/s0306-4522(01)00116-6] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Neuropeptide Y and corticotropin-releasing hormone are involved in the regulation of various physiological functions including the expression of anxiety and fear. The anxiogenic effects of corticotropin-releasing hormone can be modulated by neuropeptide Y, yet the brain regions involved in this interaction are only partly understood. By utilizing antibodies raised against neuropeptide Y and the Y1 receptor protein we identified a densely labeled cell group in the dorsal zone of caudal part of the rat lateral septum. Bilateral microinjections of neuropeptide Y into the dorsocaudal lateral septum but not into the intramedial septum dose-dependently decreased anxiety in the social interaction test of rats, whereas the effects of corticotropin-releasing hormone were opposite. The anxiogenic-like effect of corticotropin-releasing hormone was reversed by neuropeptide Y pretreatment. Local microinjection of the neuropeptide Y receptor selective antagonists revealed that neither Y1 receptor nor Y2 receptor selective antagonists had effects on experimental anxiety on their own suggesting that neuropeptide Y-induced anxiolysis is not tonic. The Y1 receptor antagonist blocked the anxiolytic-like effect of neuropeptide Y, while the Y2 receptor antagonist was ineffective.We conclude that neuropeptide Y in the dorsocaudal lateral septum may act as an endogenous anxiolytic and antagonize corticotropin-releasing hormone (stress)-induced anxiety. This functional antagonism probably shapes behavior under aversive conditions, as neuropeptide Y-induced anxiolysis is not tonic in nature. An imbalance between these two neuropeptide systems in the septum may lead to a maladaptive expression of anxiety after stress exposure.
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Affiliation(s)
- A Kask
- Department of Pharmacology, University of Taru, Estonia
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Abstract
Breast cancer screening behavior and attitudes was measured among a convenience sample of 275 Vietnamese American women as part of a cancer education program evaluation. Follow-up interviews were completed with 178. Only 36% reported having adequate knowledge on this topic, and 87% indicated an interest in receiving more information. Rates of receiving a mammogram were below recommended levels.
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Affiliation(s)
- G R Sadler
- UCSD Cancer Center, UCSD School of Medicine, La Jolla, California, USA.
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Abstract
The difference between infrared spectra of the nicotinic acetylcholine receptor (nAChR) recorded in the absence and presence of the agonist carbamylcholine (Carb) reveals a complex pattern of positive and negative bands that provides a spectral map of Carb-induced structural change. This spectral map is affected by the presence of either the local anesthetic, dibucaine, or the short chain alcohol, propanol. Both antagonists alter the intensities of difference bands in a manner consistent with the stabilization of a desensitized state. Spectral variations are also observed that are indicative of both the displacement of the anesthetics from the nAChR upon the addition of Carb and physical interactions that occur between the anesthetics and binding site residues.
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Affiliation(s)
- S E Ryan
- Department of Biochemistry, University of Ottawa, Ontario, Canada
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Abstract
Acute promyelocytic leukemia arises following a reciprocal chromosome translocation t(15;17), which generates PML-retinoic acid receptor alpha fusion proteins (PML-RARalpha). We have shown previously that wild type PML, but not PML-RARalpha, is covalently modified by the sentrin family of ubiquitin-like proteins (Kamitani, T., Nguyen, H. P., Kito, K., Fukuda-Kamitani, T., and Yeh, E. T. H. (1998) J. Biol. Chem. 273, 3117-3120). To understand the mechanisms underlying the differential sentrinization of PML versus PML-RARalpha, extensive mutational analysis was carried out to determine which Lys residues are sentrinized. We show that Lys65 in the RING finger domain, Lys160 in the B1 Box, and Lys490 in the nuclear localization signal contributes three major sentrinization sites. The PML mutant with Lys to Arg substitutions in all three sites is expressed normally, but cannot be sentrinized. Furthermore, the triple substitution mutant is localized predominantly to the nucleoplasm, in contrast to wild type PML, which is localized to the nuclear bodies. Thus, sentrinization of PML, in the context of the RING finger and the B1 box, regulates nuclear body formation. Furthermore, we showed that sentrinization of PML-RARalpha could be restored by overexpression of sentrin, but not by retinoic acid treatment. These studies provide novel insight into the pathobiochemistry of acute promyelocytic leukemia and the sentrinization pathway.
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Affiliation(s)
- T Kamitani
- Division of Molecular Medicine, Department of Internal Medicine, The University of Texas-Houston Health Science Center, Houston, TX 77030, USA
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Turner GD, Ly VC, Nguyen TH, Tran TH, Nguyen HP, Bethell D, Wyllie S, Louwrier K, Fox SB, Gatter KC, Day NP, Tran TH, White NJ, Berendt AR. Systemic endothelial activation occurs in both mild and severe malaria. Correlating dermal microvascular endothelial cell phenotype and soluble cell adhesion molecules with disease severity. Am J Pathol 1998; 152:1477-87. [PMID: 9626052 PMCID: PMC1858439] [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] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Fatal Plasmodium falciparum malaria is accompanied by systemic endothelial activation. To study endothelial activation directly during malaria and sepsis in vivo, the expression of cell adhesion molecules on dermal microvascular endothelium was examined in skin biopsies and correlated with plasma levels of soluble (circulating) ICAM-1, E-selectin, and VCAM-1 and the cytokine tumor necrosis factor (TNF)-alpha. Skin biopsies were obtained from 61 cases of severe malaria, 42 cases of uncomplicated malaria, 10 cases of severe systemic sepsis, and 17 uninfected controls. Systemic endothelial activation, represented by the up-regulation of inducible cell adhesion molecules (CAMs) on endothelium and increased levels of soluble CAMs (sCAMs), were seen in both severe and uncomplicated malaria and sepsis when compared with uninfected controls. Plasma levels of sICAM-1, sVCAM-1, and sE-selectin correlated positively with the severity of malaria whereas TNF-alpha was raised nonspecifically in malaria and sepsis. Immunohistochemical evidence of endothelial activation in skin biopsies did not correlate with sCAM levels or disease severity. This indicates a background of systemic endothelial activation, which occurs in both mild and severe malaria and sepsis. The levels of sCAMs in malaria are thus not an accurate reflection of endothelial cell expression of CAMs in a particular vascular bed, and other factors must influence their levels during disease.
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Affiliation(s)
- G D Turner
- University Department of Cellular Science, John Radcliffe Hospital, Oxford, United Kingdom.
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Abstract
Sentrin is a novel ubiquitin-like protein that can be conjugated to other proteins in a manner analogous to ubiquitination. Two additional cDNA sequences that encode proteins highly homologous to sentrin have been reported to GenBankTM. It is not known whether these sentrin-like proteins could also function as protein modifiers. In this report, a second member of the sentrin family was characterized in detail. Sentrin-2 is a 95-amino acid polypeptide that is 46% identical and 66% homologous to sentrin-1. Northern blot analysis showed that the sentrin-2 message was expressed in all tissues, but was barely detectable in the liver and placenta. The ability of sentrin-2 to conjugate to other proteins was tested by expressing hemagglutinin epitope-tagged sentrin-2 in COS cells. Western blot analysis showed that sentrin-2 could be transferred to other proteins in a pattern similar to that of sentrin-1 conjugation and had similar C-terminal processing. We further showed that both sentrin-1 and sentrin-2 could covalently modify RanGAP1, a Ran GTPase-activating protein critically involved in nuclear transport. Immunocytochemical analysis showed that sentrin-2 derivatives were highly enriched in the nucleus. Taken together, our results demonstrate that sentrin-2 is another protein modifier for the sentrinization pathway.
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Affiliation(s)
- T Kamitani
- Department of Internal Medicine, University of Texas-Houston Health Science Center, Houston, Texas 77030, USA
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Kakumu S, Sato K, Morishita T, Trinh KA, Nguyen HB, Banh VD, Do HC, Nguyen HP, Nguyen VT, Le TT, Yamamoto N, Nakao H, Isomura S. Prevalence of hepatitis B, hepatitis C, and GB virus C/hepatitis G virus infections in liver disease patients and inhabitants in Ho Chi Minh, Vietnam. J Med Virol 1998; 54:243-8. [PMID: 9557289] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The prevalence of hepatitis B virus (HBV), hepatitis C virus (HCV), and GB virus C or hepatitis G virus (GBV-C/HGV) infections was determined in 289 patients with liver disease in Ho Chi Minh City and 890 healthy inhabitants of its rural area, Dalat City, Vietnam, respectively. Serum HCV RNA and GBV-C/HGV RNA were detected by reverse transcription-polymerase chain reaction (RT-PCR). HBsAg, HCV antibodies, and GBV-C/HGV RNA were detected in 139 (47%), 69 (23%), and ten (3%) subjects, respectively, often accompanied by elevated serum levels of alanine aminotransferase. HBsAg and HCV antibodies or HCV antibodies and GBV-C/HGV RNA were detectable simultaneously in 8% and 2% of the patients, respectively. In the inhabitants, HBsAg, HCV antibodies, and GBV-C/HGV RNA were found in 51 (5.7%), nine (1.0%), and 11 (1.2%) subjects, respectively. Thus, the prevalence of HBsAg, HCV antibodies, and GBV-C/HGV RNA was significantly higher in liver disease patients than those in the general population. In the samples from 69 patients and nine inhabitants who were seropositive for HCV antibodies, HCV RNA was detectable in 42 (61%) and 4 (44%), respectively. In patients with liver disease, ten belonged to HCV genotype 1a, ten to HCV 1b, three to HCV 2a, four to HCV 2b, and two to HCV 3a by PCR with genotype-specific primers. Nine patients had mixed genotypes, and the remaining four were not classified. Of the GBV-C/HGV RNA-positive individuals, two patients and two inhabitants were positive for HBsAg, while none of the residents had HCV antibodies, although six HCV antibodies (60%) and four HCV RNA (40%) were found in patients. When a phylogenetic tree of GBV-C/HGV was constructed based on the nucleotide sequences, the 21 isolates were classified into at least two genotypes; four isolates belonged to G2, and 17 to G3. The results indicate that in Ho Chi Minh HCV infection prevails with broad distribution of genotypes together with HBV infection among patients with liver disease. This study suggests that GBV-C/HGV infection occurs independently in the two different districts in association with HCV infection.
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Affiliation(s)
- S Kakumu
- First Department of Internal Medicine, Aichi Medical University, Japan
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Carpenter PM, Nguyen HP. Mammary epithelium-induced motility of MCF-7 cells. Anticancer Res 1998; 18:1063-8. [PMID: 9615766] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND Cancer cell invasion may be mediated by motility factors elaborated by the surrounding normal host tissue. This study was performed to determine whether normal breast cells induce motility in breast cancer. MATERIALS AND METHODS MCF-7 breast carcinoma cells were co-cultured with either normal cultured human mammary epithelial cells (HMEC) or immortalized 184 A1 mammary epithelial cells and observed for evidence of motility. The ability of conditioned medium from mammary epithelial cells to induce motility in MCF-7 was measured with scattering assays, Boyden chamber assays and time-lapse video microscopy. RESULTS A soluble factor in the conditioned medium of both 184 A1 and HMEC induced motility in MCF-7. The motility factor was trypsin-sensitive, but activity remained after 5 minutes of boiling or 2 hours at pH 2. CONCLUSION Mammary epithelium secretes a protein capable of inducing motility in breast cancer cells, raising the possibility that this effect contributes to the invasive properties of human mammary carcinoma.
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Affiliation(s)
- P M Carpenter
- Department Pathology, University of California, Irvine Medical Center, Orange, CA 92868, USA.
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Abstract
PML, a RING finger protein with tumor suppressor activity, has been implicated in the pathogenesis of acute promyelocytic leukemia that arises following a reciprocal chromosomal translocation that fuses the PML gene with the retinoic acid receptor alpha (RARalpha) gene. Immunocytochemical analysis has demonstrated that PML is co-localized with a novel ubiquitin-like protein in the nuclear bodies, which could be disrupted by the PML-RARalpha fusion protein. The physical nature of this co-localization is unknown. Using a COS cell expression system, we show that PML is covalently modified by all three members of the sentrin family of ubiquitin-like proteins. Covalent modification of PML requires the conserved Gly residue near the C termini of sentrin proteins. Sentrinization of PML is highly specific because neither NEDD8 nor ubiquitin could modify PML. Similar specificity is also observed for the covalent modification of RanGAP1 by the sentrin member of ubiquitin-like proteins. These observations highlight the fine substrate specificity of the sentrinization pathway. In acute promyelocytic leukemia, two forms of PML-RARalpha fusion proteins have been reported. Remarkably, both forms of PML-RARalpha fusion proteins could not be sentrinized. Thus differential sentrinization of PML and PML-RARalpha could play an important role in regulating the biological function of PML and in the pathogenesis of acute promyelocytic leukemia.
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Affiliation(s)
- T Kamitani
- Department of Internal Medicine, and Research Center for Cardiovascular Diseases, Institute of Molecular Medicine for the Prevention of Human Diseases, The University of Texas-Houston Health Science Center, Houston, Texas 77030, USA
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Abstract
NEDD8 is a novel 81 amino acid polypeptide which is 60% identical and 80% homologous to ubiquitin. Northern blot analysis showed that the NEDD8 message was developmentally down-regulated. In adult tissues, NEDD8 expression was mostly restricted to the heart and skeletal muscle. Antiserum specific for NEDD8 detected a 6-kDa monomer in SK-N-SH, BJAB, and HL60 cell lysates. A 14-kDa band was also detected in BJAB, HL60, and SK-MEL28 but not in SK-N-SH and K562 cell lysates. An approximately 90-kDa band was detected in all cell lines tested. Thus, NEDD8 is likely to be conjugated to other proteins in a manner analogous to ubiquitination. However, the conjugation pattern of NEDD8 is entirely different from that of ubiquitin in all cell lines tested. To study NEDD8 conjugation in more detail, hemagglutinin-epitope-tagged NEDD8 was expressed in COS cells. Western blot analysis revealed an NEDD8 monomer and a series of higher molecular weight NEDD8-conjugated proteins or NEDD8 multimers. Immunocytochemical analysis showed that NEDD8 expression was highly enriched in the nucleus and was much weaker in the cytosol. In contrast, ubiquitin expression was detectable equally well in the nucleus and cytosol. Mutational analysis showed that the C terminus of NEDD8 was efficiently cleaved and that Gly-76 was required for conjugation of NEDD8 to other proteins. Taken together, NEDD8 provides another substrate for covalent protein modification and may play a unique role during development.
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Affiliation(s)
- T Kamitani
- Division of Molecular Medicine, Department of Internal Medicine, The University of Texas-Houston Health Science Center, Houston, Texas 77030, USA
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Kamitani T, Nguyen HP, Yeh ET. Activation-induced aggregation and processing of the human Fas antigen. Detection with cytoplasmic domain-specific antibodies. J Biol Chem 1997; 272:22307-14. [PMID: 9268381 DOI: 10.1074/jbc.272.35.22307] [Citation(s) in RCA: 76] [Impact Index Per Article: 2.8] [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] [Indexed: 02/05/2023] Open
Abstract
Fas (APO1/CD95) is a type 1 transmembrane protein critically involved in receptor-mediated apoptosis. Previous studies have shown that Fas exists in monomeric form in resting cells and aggregates upon cross-linking to form a complex that serves to recruit additional signaling molecules to the cell membrane. To study the molecular fate of the Fas antigen following receptor activation, a monoclonal antibody specific for the cell death domain of Fas has been generated. This monoclonal antibody (3D5) could be used in Western blot analysis using total cell lysates to identify different forms of Fas antigens without immunoprecipitation. High molecular mass (>200 kDa), SDS- and beta-mercaptoethanol-resistant Fas aggregates were formed immediately following receptor cross-linking, and a 97-kDa band (p97) was detected about 2 h later. p97 could be detected by antibodies against either the death domain or the C terminus. However, p97 could not be precipitated by antiextracellular domain antibodies. Thus, p97 most likely represents a processed form of the high molecular weight Fas aggregates. Although p97 generation followed a similar time course as CPP32 activation and poly(ADP-ribose) polymerase cleavage, it could not be inhibited by cysteine protease, calpain, or proteasome inhibitors.
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Affiliation(s)
- T Kamitani
- Department of Internal Medicine, and Cardiovascular Research Center, Institute of Molecular Medicine for the Prevention of Human Diseases, University of Texas-Houston Health Science Center, Houston, Texas 77030, USA
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Ha V, Nguyen NH, Tran TB, Bui MC, Nguyen HP, Tran TH, Phan TQ, Arnold K, Tran TH. Severe and complicated malaria treated with artemisinin, artesunate or artemether in Viet Nam. Trans R Soc Trop Med Hyg 1997; 91:465-7. [PMID: 9373657 DOI: 10.1016/s0035-9203(97)90287-x] [Citation(s) in RCA: 25] [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] [Indexed: 02/05/2023] Open
Abstract
One hundred and seventy five Vietnamese adults with severe and complicated malaria admitted to a rural district hospital were entered into an open randomized comparative study to compare 4 treatment regimens based on artemisinin and its derivatives. The median time of defervescence was 48 h (95% confident interval [CI] 38-58 h) in those given intramuscular (i.m.) artemether, 42 h (95% CI 36-48 h) in those given artemisinin suppositories, 36 h (95% CI 30-42 h) in those receiving artesunate (i.m.) and 30 h (95% CI 18-42 h) in those receiving intravenous artesunate (P = 0.13). The respective median parasite clearance times were 30 h (95% CI 26-34 h), 30 h (95% CI 24-36 h), 24 h (95% CI 15-33 h), and 24 h (95% CI 15-33 h) (P = 0.30); the median times for recovery of consciousness were 47 h (95% CI 31-63 h), 24 h (95% CI 18-30 h), 30 h (95% CI 18-42 h), and 24 h (95% CI 4-44 h) (P = 0.18); and the mortality rates were 11.1%, 17.6%, 10.2% and 16.6%, respectively (P = 0.64). There was no significant difference in efficacy between the 4 treatments.
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Affiliation(s)
- V Ha
- Centre for Tropical Diseases, Cho Quan Hospital, Ho Chi Minh City, Viet Nam
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Abstract
Sentrin is a novel ubiquitin-like protein that protects cells against both anti-Fas and tumor necrosis factor-induced cell death. Antiserum recognizing the N terminus of sentrin revealed the presence of a 18-kDa sentrin monomer, a 90-kDa band (p90), and multiple high molecular mass bands. Because sentrin possesses the conserved Gly-Gly residues near the C terminus, it is likely that these additional bands represent conjugation of sentrin to other proteins in a manner that is similar to the ubiquitination pathway. Transient expression of hemagglutinin epitope-tagged sentrin mutants in COS cells demonstrated that the sentrin C terminus is cleaved, which allows it to be conjugated to other proteins via the conserved C-terminal Gly residue. Immunocytochemical staining and cell fractionation analysis demonstrated that sentrin monomer is localized predominantly to the cytosol. However, p90 and the majority of sentrinized proteins appeared to be localized to the nucleus. When the conserved Gly-Gly residues of sentrin were changed to Gly-Ala, only sentrin monomer and p90 but not the high molecular mass bands were observed. Thus, p90 generation appears to be required for the formation of high molecular mass bands in the nucleus. Taken together, sentrinization represents a novel pathway for nuclear protein modification, which is distinct from ubiquitination.
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Affiliation(s)
- T Kamitani
- Division of Molecular Medicine, Department of Internal Medicine and Cardiovascular Research Center, Institute of Molecular Medicine for the Prevention of Human Diseases, The University of Texas-Houston Health Science Center, Houston, Texas 77030, USA
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Abstract
A potentially important tumor-host interaction is increased tumor-cell invasiveness in response to motility factors derived from stromal and lymphoid cells. Conditioned medium of IL-2-stimulated lymphocytes and fractions enriched in either T cells, natural killer (NK) cells, or monocytes induced motility in MCF-7 breast carcinoma cells. ELISA and antibody neutralization studies demonstrated that this effect was due to tumor necrosis factor-alpha (TNF-alpha) secretion by the lymphoid cells or the enriched fractions. Unstimulated leukocytes in direct contact with MCF-7 cells also induced motility that was inhibited by anti-TNF-alpha antiserum. Time-lapse video microscopy of cells exposed to 10 ng/ml TNF-alpha showed that motility was independent of its toxic effects. Immunoperoxidase showed that MCF-7 cells expressed both the 55-kDa and the 75-kDa TNF-alpha receptors (TNFR). Antiserum against the 55-kDa TNFR, like TNF-alpha, induced motility in MCF-7 cells. This was most likely due to cross-linking of the 55-kDa TNFR monomers, since the monomeric F(ab) did not produce this effect. Our results raise the possibility that TNF-alpha-induced motility is one mechanism by which tumor cells overcome the potential anti-tumor immune function of lymphocytes and macrophages in peri-tumoral infiltrates.
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Affiliation(s)
- P M Carpenter
- Department of Pathology, University of California, Irvine 92868, USA.
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