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Ungethüm K, Wiedmann S, Wagner M, Leyh R, Ertl G, Frantz S, Geisler T, Karmann W, Prondzinsky R, Herdeg C, Noutsias M, Ludwig T, Käs J, Klocke B, Krapp J, Wood D, Kotseva K, Störk S, Heuschmann PU. Secondary prevention in diabetic and nondiabetic coronary heart disease patients: Insights from the German subset of the hospital arm of the EUROASPIRE IV and V surveys. Clin Res Cardiol 2023; 112:285-298. [PMID: 36166067 PMCID: PMC9898414 DOI: 10.1007/s00392-022-02093-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 08/25/2022] [Indexed: 02/06/2023]
Abstract
BACKGROUND Patients with coronary heart disease (CHD) with and without diabetes mellitus have an increased risk of recurrent events requiring multifactorial secondary prevention of cardiovascular risk factors. We compared prevalences of cardiovascular risk factors and its determinants including lifestyle, pharmacotherapy and diabetes mellitus among patients with chronic CHD examined within the fourth and fifth EUROASPIRE surveys (EA-IV, 2012-13; and EA-V, 2016-17) in Germany. METHODS The EA initiative iteratively conducts European-wide multicenter surveys investigating the quality of secondary prevention in chronic CHD patients aged 18 to 79 years. The data collection in Germany was performed during a comprehensive baseline visit at study centers in Würzburg (EA-IV, EA-V), Halle (EA-V), and Tübingen (EA-V). RESULTS 384 EA-V participants (median age 69.0 years, 81.3% male) and 536 EA-IV participants (median age 68.7 years, 82.3% male) were examined. Comparing EA-IV and EA-V, no relevant differences in risk factor prevalence and lifestyle changes were observed with the exception of lower LDL cholesterol levels in EA-V. Prevalence of unrecognized diabetes was significantly lower in EA-V as compared to EA-IV (11.8% vs. 19.6%) while the proportion of prediabetes was similarly high in the remaining population (62.1% vs. 61.0%). CONCLUSION Between 2012 and 2017, a modest decrease in LDL cholesterol levels was observed, while no differences in blood pressure control and body weight were apparent in chronic CHD patients in Germany. Although the prevalence of unrecognized diabetes decreased in the later study period, the proportion of normoglycemic patients was low. As pharmacotherapy appeared fairly well implemented, stronger efforts towards lifestyle interventions, mental health programs and cardiac rehabilitation might help to improve risk factor profiles in chronic CHD patients.
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Affiliation(s)
- K Ungethüm
- Institute of Clinical Epidemiology and Biometry, University of Würzburg, Josef-Schneider-Str. 2, 97080, Würzburg, Bavaria, Germany.
| | - S Wiedmann
- Institute of Clinical Epidemiology and Biometry, University of Würzburg, Josef-Schneider-Str. 2, 97080, Würzburg, Bavaria, Germany
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität Zu Berlin, Berlin, Berlin, Germany
| | - M Wagner
- Institute of Clinical Epidemiology and Biometry, University of Würzburg, Josef-Schneider-Str. 2, 97080, Würzburg, Bavaria, Germany
- Department of Internal Medicine I, University Hospital Würzburg, Würzburg, Bavaria, Germany
- Kuratorium für Dialyse und Nierentransplantation E.V, Neu-Isenburg, Hesse, Germany
| | - R Leyh
- Department of Internal Medicine I, University Hospital Würzburg, Würzburg, Bavaria, Germany
- Department of Clinical Research & Epidemiology, Comprehensive Heart Failure Center, University Hospital Würzburg, Würzburg, Bavaria, Germany
| | - G Ertl
- Department of Internal Medicine I, University Hospital Würzburg, Würzburg, Bavaria, Germany
- Department of Clinical Research & Epidemiology, Comprehensive Heart Failure Center, University Hospital Würzburg, Würzburg, Bavaria, Germany
| | - S Frantz
- Department of Internal Medicine I, University Hospital Würzburg, Würzburg, Bavaria, Germany
- Department of Clinical Research & Epidemiology, Comprehensive Heart Failure Center, University Hospital Würzburg, Würzburg, Bavaria, Germany
- Department of Internal Medicine III, University Hospital Halle, Martin-Luther-University Halle-Wittenberg, Saxony-Anhalt, Halle (Saale), Germany
| | - T Geisler
- Department of Cardiology and Cardiovascular Disease, University Hospital Tübingen, Tübingen, Baden-Württemberg, Germany
| | - W Karmann
- Department of Medicine, Klinik Kitzinger Land, Kitzingen, Bavaria, Germany
| | - R Prondzinsky
- Cardiology/Intensive Care Medicine, Carl Von Basedow Klinikum Merseburg, Merseburg, Saxony-Anhalt, Germany
| | - C Herdeg
- Medius Klinik Ostfildern-Ruit, Klinik für Innere Medizin, Herz- und Kreislauferkrankungen, Ostfildern-Ruit, Baden-Württemberg, Germany
| | - M Noutsias
- Department of Internal Medicine III, University Hospital Halle, Martin-Luther-University Halle-Wittenberg, Saxony-Anhalt, Halle (Saale), Germany
- Department of Internal Medicine A, University Hospital Ruppin-Brandenburg (UKRB) of the Medical School of Brandenburg (MHB), Neuruppin, Brandenburg, Germany
| | - T Ludwig
- Institute of Clinical Epidemiology and Biometry, University of Würzburg, Josef-Schneider-Str. 2, 97080, Würzburg, Bavaria, Germany
| | - J Käs
- Institute of Clinical Epidemiology and Biometry, University of Würzburg, Josef-Schneider-Str. 2, 97080, Würzburg, Bavaria, Germany
| | - B Klocke
- Institute of Clinical Epidemiology and Biometry, University of Würzburg, Josef-Schneider-Str. 2, 97080, Würzburg, Bavaria, Germany
| | - J Krapp
- Institute of Clinical Epidemiology and Biometry, University of Würzburg, Josef-Schneider-Str. 2, 97080, Würzburg, Bavaria, Germany
| | - D Wood
- European Society of Cardiology, Sophia Antipolis, France
- Imperial College Healthcare NHS Trusts, London, UK
- National University of Ireland, Galway, Ireland
| | - K Kotseva
- European Society of Cardiology, Sophia Antipolis, France
- Imperial College Healthcare NHS Trusts, London, UK
- National University of Ireland, Galway, Ireland
| | - S Störk
- Department of Internal Medicine I, University Hospital Würzburg, Würzburg, Bavaria, Germany
- Department of Clinical Research & Epidemiology, Comprehensive Heart Failure Center, University Hospital Würzburg, Würzburg, Bavaria, Germany
| | - P U Heuschmann
- Institute of Clinical Epidemiology and Biometry, University of Würzburg, Josef-Schneider-Str. 2, 97080, Würzburg, Bavaria, Germany
- Department of Clinical Research & Epidemiology, Comprehensive Heart Failure Center, University Hospital Würzburg, Würzburg, Bavaria, Germany
- Clinical Trial Center, University Hospital Würzburg, Würzburg, Bavaria, Germany
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König F, Marks P, Maurer V, Vetterlein M, Ludwig T, Gild P, Kühnke L, Janisch F, Schuettfort V, Dahlem R, Fisch M. Perineal bladder neck closure as salvage treatment for patients after failed incontinence surgery. Eur Urol 2023. [DOI: 10.1016/s0302-2838(23)00823-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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Fuehner C, Vetterlein M, Leßke J, Ludwig T, Meyer C, Gild P, Maurer V, Engel O, Dahlem R, Rink M, Fisch M, Soave A. The impact of pain and postoperative complications on outcome in patients treated with buccal mucosa graft urethroplasty – results of a randomized controlled study. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)33068-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Bischoff M, Howland V, Klinger-König J, Tomczyk S, Schmidt S, Zygmunt M, Heckmann M, van den Berg N, Bethke B, Corleis J, Günther S, Liutkus K, Stentzel U, Neumann A, Penndorf P, Ludwig T, Hammer E, Winter T, Grabe HJ. Save the children by treating their mothers (PriVileG-M-study) - study protocol: a sequentially randomized controlled trial of individualized psychotherapy and telemedicine to reduce mental stress in pregnant women and young mothers and to improve Child's health. BMC Psychiatry 2019; 19:371. [PMID: 31775668 PMCID: PMC6880484 DOI: 10.1186/s12888-019-2279-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Accepted: 09/10/2019] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND As early as pregnancy, maternal mental stress impinges on the child's development and health. Thus, this may cause enhanced risk for premature birth, lowered fetal growth, and lower fetal birth weight as well as enhanced levels of the stress hormone cortisol and lowered levels of the bonding hormone oxytocin. Maternal stress further reduces maternal sensitivity for the child's needs which impairs the mother-child-interaction and bonding. Therefore, prevention and intervention studies on mental stress are necessary, beginning prenatally and applying rigorous research methodology, such as randomized controlled trials, to ensure high validity. METHODS A randomized controlled trial is used to assess the impact of psychotherapy and telemedicine on maternal mental stress and the child's mental and physical health. Mentally stressed pregnant women are randomized to an intervention (IG) and a not intervened control group. The IG receives an individualized psychotherapy starting prenatal and lasting for 10 months. Afterwards, a second randomization is used to investigate whether the use of telemedicine can stabilize the therapeutic effects. Using ecological momentary assessments and video recordings, the transfer into daily life, maternal sensitivity and mother-child-bonding are assessed. Psycho-biologically, the synchronicity of cortisol and oxytocin levels between mother and child are assessed as well as the peptidome of the colostrum and breast milk, which are assumed to be essential for the adaptation to the extra-uterine environment. All assessments are compared to an additional control group of healthy women. Finally, the results of the study will lead to the development of a qualification measure for health professionals to detect mental stress, to treat it with low-level interventions and to refer those women with high stress levels to mental health professionals. DISCUSSION The study aims to prevent the transgenerational transfer of psychiatric and somatic disorders from the mother to her child. The effects of the psychotherapy will be stabilized through telemedicine and long-term impacts on the child's and mothers' mental health are enhanced. The combination of psychotherapy, telemedicine and methodologies of ecological momentary assessment, video recording and bio banking are new in content-related and methodological manner. TRIAL REGISTRATION German Clinical Trials Register: DRKS00017065. Registered 02 May 2019. World Health Organization, Universal Trial Number: U1111-1230-9826. Registered 01 April 2019.
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Affiliation(s)
- M. Bischoff
- Department of Health and Prevention, Institute of Psychology, University Greifswald, Greifswald, Germany
| | - V. Howland
- Department of Neonatology and Paediatric Intensive Care, University Medicine Greifswald, Greifswald, Germany
| | - J. Klinger-König
- Department of Psychiatry and Psychotherapy, University Medicine Greifswald, Greifswald, Germany
| | - S. Tomczyk
- Department of Health and Prevention, Institute of Psychology, University Greifswald, Greifswald, Germany
| | - S. Schmidt
- Department of Health and Prevention, Institute of Psychology, University Greifswald, Greifswald, Germany
| | - M. Zygmunt
- Clinic and Polyclinic for Obstetrics and Gynecology, University Medicine Greifswald, Greifswald, Germany
| | - M. Heckmann
- Department of Neonatology and Paediatric Intensive Care, University Medicine Greifswald, Greifswald, Germany
| | - N. van den Berg
- Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany
| | - B. Bethke
- Department of Health, Nursing and Administration, University of Applied Sciences Neubrandenburg, Neubrandenburg, Germany
| | - J. Corleis
- Department of Psychiatry and Psychotherapy, University Medicine Greifswald, Greifswald, Germany
| | - S. Günther
- Department of Psychiatry and Psychotherapy, University Medicine Greifswald, Greifswald, Germany
| | - K. Liutkus
- Department of Psychiatry and Psychotherapy, University Medicine Greifswald, Greifswald, Germany
| | - U. Stentzel
- Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany
| | - A. Neumann
- Department of Health, Nursing and Administration, University of Applied Sciences Neubrandenburg, Neubrandenburg, Germany
| | - P. Penndorf
- Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany
| | - T. Ludwig
- Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany
| | - E. Hammer
- Department of Functional Genomics, Interfaculty Institute for Genetics and Functional Genomics, University Medicine Greifswald, Greifswald, Germany
| | - T. Winter
- Integrated Research Biobank, University Medicine Greifswald, Greifswald, Germany
| | - H. J. Grabe
- Department of Psychiatry and Psychotherapy, University Medicine Greifswald, Greifswald, Germany
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De Backer G, Jankowski P, Kotseva K, Mirrakhimov E, Reiner Ž, Rydén L, Tokgözoğlu L, Wood D, De Bacquer D, De Backer G, Jankowski P, Kotseva K, Mirrakhimov E, Reiner Z, Rydén L, Tokgözoğlu L, Wood D, De Bacquer D, Kotseva K, De Backer G, Abreu A, Aguiar C, Badariene J, Bruthans J, Castro Conde A, Cifkova R, Crowley J, Davletov K, Bacquer DD, De Smedt D, De Sutter J, Deckers J, Dilic M, Dolzhenko M, Druais H, Dzerve V, Erglis A, Fras Z, Gaita D, Gotcheva N, Grobbee D, Gyberg V, Hasan Ali H, Heuschmann P, Hoes A, Jankowski P, Lalic N, Lehto S, Lovic D, Maggioni A, Mancas S, Marques-Vidal P, Mellbin L, Miličić D, Mirrakhimov E, Oganov R, Pogosova N, Reiner Ž, Rydén L, Stagmo M, Störk S, Sundvall J, Tokgözoğlu L, Tsioufis K, Vulic D, Wood D, Wood D, Kotseva K, Jennings C, Adamska A, Adamska S, Rydén L, Mellbin L, Tuomilehto J, Schnell O, Druais H, Fiorucci E, Glemot M, Larras F, Missiamenou V, Maggioni A, Taylor C, Ferreira T, Lemaitre K, Bacquer DD, De Backer G, Raman L, Sundvall J, DeSmedt D, De Sutter J, Willems A, De Pauw M, Vervaet P, Bollen J, Dekimpe E, Mommen N, Van Genechten G, Dendale P, Bouvier C, Chenu P, Huyberechts D, Persu A, Dilic M, Begic A, Durak Nalbantic A, Dzubur A, Hadzibegic N, Iglica A, Kapidjic S, Osmanagic Bico A, Resic N, Sabanovic Bajramovic N, Zvizdic F, Vulic D, Kovacevic-Preradovic T, Popovic-Pejicic S, Djekic D, Gnjatic T, Knezevic T, Kovacevic-Preradovic T, Kos L, Popovic-Pejicic S, Stanetic B, Topic G, Gotcheva N, Georgiev B, Terziev A, Vladimirov G, Angelov A, Kanazirev B, Nikolaeva S, Tonkova D, Vetkova M, Milicic D, Reiner Ž, Bosnic A, Dubravcic M, Glavina M, Mance M, Pavasovic S, Samardzic J, Batinic T, Crljenko K, Delic-Brkljacic D, Dula K, Golubic K, Klobucar I, Kordic K, Kos N, Nedic M, Olujic D, Sedinic V, Blazevic T, Pasalic A, Percic M, Sikic J, Bruthans J, Cífková R, Hašplová K, Šulc P, Wohlfahrt P, Mayer O, Cvíčela M, Filipovský J, Gelžinský J, Hronová M, Hasan-Ali H, Bakery S, Mosad E, Hamed H, Ibrahim A, Elsharef M, Kholef E, Shehata A, Youssef M, Elhefny E, Farid H, Moustafa T, Sobieh M, Kabil H, Abdelmordy A, Lehto S, Kiljander E, Kiljander P, Koukkunen H, Mustonen J, Cremer C, Frantz S, Haupt A, Hofmann U, Ludwig K, Melnyk H, Noutsias M, Karmann W, Prondzinsky R, Herdeg C, Hövelborn T, Daaboul A, Geisler T, Keller T, Sauerbrunn D, Walz-Ayed M, Ertl G, Leyh R, Störk S, Heuschmann P, Ehlert T, Klocke B, Krapp J, Ludwig T, Käs J, Starke C, Ungethüm K, Wagner M, Wiedmann S, Tsioufis K, Tolis P, Vogiatzi G, Sanidas E, Tsakalis K, Kanakakis J, Koutsoukis A, Vasileiadis K, Zarifis J, Karvounis C, Crowley J, Gibson I, Houlihan A, Kelly C, O'Donnell M, Bennati M, Cosmi F, Mariottoni B, Morganti M, Cherubini A, Di Lenarda A, Radini D, Ramani F, Francese M, Gulizia M, Pericone D, Davletov K, Aigerim K, Zholdin B, Amirov B, Assembekov B, Chernokurova E, Ibragimova F, Kodasbayev A, Markova A, Mirrakhimov E, Asanbaev A, Toktomamatov U, Tursunbaev M, Zakirov U, Abilova S, Arapova R, Bektasheva E, Esenbekova J, Neronova K, Asanbaev A, Baigaziev K, Toktomamatov U, Zakirov U, Baitova G, Zheenbekov T, Erglis A, Andrejeva T, Bajare I, Kucika G, Labuce A, Putane L, Stabulniece M, Dzerve V, Klavins E, Sime I, Badariene J, Gedvilaite L, Pečiuraite D, Sileikienė V, Skiauteryte E, Solovjova S, Sidabraite R, Briedis K, Ceponiene I, Jurenas M, Kersulis J, Martinkute G, Vaitiekiene A, Vasiljevaite K, Veisaite R, Plisienė J, Šiurkaitė V, Vaičiulis Ž, Jankowski P, Czarnecka D, Kozieł P, Podolec P, Nessler J, Gomuła P, Mirek-Bryniarska E, Bogacki P, Wiśniewski A, Pająk A, Wolfshaut-Wolak R, Bućko J, Kamiński K, Łapińska M, Paniczko M, Raczkowski A, Sawicka E, Stachurska Z, Szpakowicz M, Musiał W, Dobrzycki S, Bychowski J, Kosior D, Krzykwa A, Setny M, Kosior D, Rak A, Gąsior Z, Haberka M, Gąsior Z, Haberka M, Szostak-Janiak K, Finik M, Liszka J, Botelho A, Cachulo M, Sousa J, Pais A, Aguiar C, Durazzo A, Matos D, Gouveia R, Rodrigues G, Strong C, Guerreiro R, Aguiar J, Abreu A, Cruz M, Daniel P, Morais L, Moreira R, Rosa S, Rodrigues I, Selas M, Gaita D, Mancas S, Apostu A, Cosor O, Gaita L, Giurgiu L, Hudrea C, Maximov D, Moldovan B, Mosteoru S, Pleava R, Ionescu M, Parepa I, Pogosova N, Arutyunov A, Ausheva A, Isakova S, Karpova A, Salbieva A, Sokolova O, Vasilevsky A, Pozdnyakov Y, Antropova O, Borisova L, Osipova I, Lovic D, Aleksic M, Crnokrak B, Djokic J, Hinic S, Vukasin T, Zdravkovic M, Lalic N, Jotic A, Lalic K, Lukic L, Milicic T, Macesic M, Stanarcic Gajovic J, Stoiljkovic M, Djordjevic D, Kostic S, Tasic I, Vukovic A, Fras Z, Jug B, Juhant A, Krt A, Kugonjič U, Chipayo Gonzales D, Gómez Barrado J, Kounka Z, Marcos Gómez G, Mogollón Jiménez M, Ortiz Cortés C, Perez Espejo P, Porras Ramos Y, Colman R, Delgado J, Otero E, Pérez A, Fernández-Olmo M, Torres-LLergo J, Vasco C, Barreñada E, Botas J, Campuzano R, González Y, Rodrigo M, de Pablo C, Velasco E, Hernández S, Lozano C, González P, Castro A, Dalmau R, Hernández D, Irazusta F, Vélez A, Vindel C, Gómez-Doblas J, García Ruíz V, Gómez L, Gómez García M, Jiménez-Navarro M, Molina Ramos A, Marzal D, Martínez G, Lavado R, Vidal A, Rydén L, Boström-Nilsson V, Kjellström B, Shahim B, Smetana S, Hansen O, Stensgaard-Nake E, Deckers J, Klijn A, Mangus T, Peters R, Scholte op Reimer W, Snaterse M, Aydoğdu S, Ç Erol, Otürk S, Tulunay Kaya C, Ahmetoğlu Y, Ergene O, Akdeniz B, Çırgamış D, Akkoyun H Kültürsay S, Kayıkçıoğlu M, Çatakoğlu A, Çengel A, Koçak A, Ağırbaşlı M, Açıksarı G, Çekin M, Tokgözoğlu L, Kaya E, Koçyiğit D, Öngen Z, Özmen E, Sansoy V, Kaya A, Oktay V, Temizhan A, Ünal S, İ Yakut, Kalkan A, Bozkurt E, Kasapkara H, Dolzhenko M, Faradzh C, Hrubyak L, Konoplianyk L, Kozhuharyova N, Lobach L, Nesukai V, Nudchenko O, Simagina T, Yakovenko L, Azarenko V, Potabashny V, Bazylevych A, Bazylevych M, Kaminska K, Panchenko L, Shershnyova O, Ovrakh T, Serik S, Kolesnik T, Kosova H, Wood D, Adamska A, Adamska S, Jennings C, Kotseva K, Hoye P Atkin A, Fellowes D, Lindsay S, Atkinson C, Kranilla C, Vinod M, Beerachee Y, Bennett C, Broome M, Bwalya A, Caygill L, Dinning L, Gillespie A, Goodfellow R, Guy J, Idress T, Mills C, Morgan C, Oustance N, Singh N, Yare M, Jagoda J, Bowyer H, Christenssen V, Groves A, Jan A, Riaz A, Gill M, Sewell T, Gorog D, Baker M, De Sousa P, Mazenenga T, Porter J, Haines F, Peachey T, Taaffe J, Wells K, Ripley D, Forward H, McKie H, Pick S, Thomas H, Batin P, Exley D, Rank T, Wright J, Kardos A, Sutherland SB, Wren L, Leeson P, Barker D, Moreby B, Sawyer J, Stirrup J, Brunton M, Brodison A, Craig J, Peters S, Kaprielian R, Bucaj A, Mahay K, Oblak M, Gale C, Pye M, McGill Y, Redfearn H, Fearnley M. Management of dyslipidaemia in patients with coronary heart disease: Results from the ESC-EORP EUROASPIRE V survey in 27 countries. Atherosclerosis 2019; 285:135-146. [DOI: 10.1016/j.atherosclerosis.2019.03.014] [Citation(s) in RCA: 101] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 02/22/2019] [Accepted: 03/19/2019] [Indexed: 12/16/2022]
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Hagemeister MH, Stock NK, Ludwig T, Heuschmann P, Vogel U. Self-reported influenza vaccination rates and attitudes towards vaccination among health care workers: results of a survey in a German university hospital. Public Health 2017; 154:102-109. [PMID: 29220709 DOI: 10.1016/j.puhe.2017.10.027] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [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: 04/11/2017] [Revised: 09/12/2017] [Accepted: 10/26/2017] [Indexed: 12/13/2022]
Abstract
OBJECTIVES The objective of this survey was to analyse vaccination rates and attitudes towards vaccination among health care workers (HCWs). The period prevalence of self-reported acute respiratory infections in the influenza season 2014/2015 was examined. STUDY DESIGN A cross-sectional study was conducted among HCWs of a German university hospital using an anonymised questionnaire. Recruitment was performed by providing all medical and nursing staff a paper questionnaire with an invitation to participate. METHODS Descriptive aggregated data were generated from digitalised questionnaires for all variables. Differences in categorical variables were analysed by Chi-squared test. Textual data were analysed by an iterative process based on the grounded theory by Glaser and Strauss. RESULTS The response rate was 31% (677/2186). Probable influenza was described by 9% (64/677) of the participants. The overall self-reported vaccination rate was 55% (366/666). Self-reported vaccination rate was higher in physicians (172/239, 72%) than in nursing staff (188/418, 45%). HCWs in paediatrics (103/148, 70%) more likely received vaccines than HCWs in surgery (31/84, 37%). Most vaccinations were provided by medical staff on the wards (164/368, 45%). Self-reported lost work-time due to adverse events after vaccination was low (6/336, 2%). Eight categories for vaccine refusal were identified, whereof doubts about effectiveness and indication of the vaccine was most frequently mentioned (72/202, 36%). CONCLUSIONS Efforts to promote vaccination should focus on nursing staff and should provide scientific evidence on effectiveness, adverse effects, and the benefits of health care workers' vaccination for patients. Administering vaccines at the workplace proved to be a successful strategy in our setting. Studies are needed to assess the frequency of influenza causing disease in HCWs.
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Affiliation(s)
- M H Hagemeister
- Public Health Authority, District Office Kitzingen, Bavaria, Germany; Infection Control, University Hospital Würzburg, Bavaria, Germany.
| | - N K Stock
- Institute for Hygiene and Microbiology, University of Würzburg, Bavaria, Germany
| | - T Ludwig
- Institute for Clinical Epidemiology and Biometry, University of Würzburg, Bavaria, Germany
| | - P Heuschmann
- Institute for Clinical Epidemiology and Biometry, University of Würzburg, Bavaria, Germany; Clinical Trial Centre, University Hospital Würzburg, Bavaria, Germany
| | - U Vogel
- Infection Control, University Hospital Würzburg, Bavaria, Germany; Institute for Hygiene and Microbiology, University of Würzburg, Bavaria, Germany
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Baranska A, Mujagic Z, Smolinska A, Dallinga JW, Jonkers DMAE, Tigchelaar EF, Dekens J, Zhernakova A, Ludwig T, Masclee AAM, Wijmenga C, van Schooten FJ. Volatile organic compounds in breath as markers for irritable bowel syndrome: a metabolomic approach. Aliment Pharmacol Ther 2016; 44:45-56. [PMID: 27136066 DOI: 10.1111/apt.13654] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2015] [Revised: 12/30/2015] [Accepted: 04/17/2016] [Indexed: 12/11/2022]
Abstract
BACKGROUND The diagnosis of irritable bowel syndrome (IBS) is challenging because of its heterogeneity and multifactorial pathophysiology. No reliable biomarkers of IBS have been identified so far. AIMS In a case-control study, using a novel application of breath analysis to distinguish IBS patients from healthy controls based on the analysis of volatile organic compounds (VOCs). Subsequently, the diagnostic VOC-biomarker set was correlated with self-reported gastrointestinal (GI) symptoms of subjects of the Maastricht IBS clinical cohort and of a general population cohort, LifeLines DEEP. METHODS Breath samples were collected from 170 IBS patients and 153 healthy controls in the clinical cohort and from 1307 participants in general population cohort. Multivariate statistics were used to identify the most discriminatory set of VOCs in the clinical cohort, and to find associations between VOCs and GI symptoms in both cohorts. RESULTS A set of 16 VOCs correctly predicted 89.4% of the IBS patients and 73.3% of the healthy controls (AUC = 0.83). The VOC-biomarker set correlated moderately with a set of GI symptoms in the clinical (r = 0.55, P = 0.0003) and general population cohorts (r = 0.54, P = 0.0004). A Kruskal-Wallis test showed no influence from possible confounding factors in distinguishing IBS patients from healthy controls. CONCLUSIONS A set of 16 breath-based biomarkers that distinguishes IBS patients from healthy controls was identified. The VOC-biomarker set correlated significantly with GI symptoms in two independent cohorts. We demonstrate the potential use of breath analysis in the diagnosis and monitoring of IBS, and a possible application of VOC analyses in a general population cohort.
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Affiliation(s)
- A Baranska
- Top Institute Food and Nutrition, Wageningen, The Netherlands.,Department of Pharmacology and Toxicology, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University Medical Centre (MUMC+), Maastricht, The Netherlands
| | - Z Mujagic
- Top Institute Food and Nutrition, Wageningen, The Netherlands.,Division of Gastroenterology-Hepatology, Department of Internal Medicine, Maastricht University Medical Centre+, Maastricht, The Netherlands
| | - A Smolinska
- Top Institute Food and Nutrition, Wageningen, The Netherlands.,Department of Pharmacology and Toxicology, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University Medical Centre (MUMC+), Maastricht, The Netherlands
| | - J W Dallinga
- Department of Pharmacology and Toxicology, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University Medical Centre (MUMC+), Maastricht, The Netherlands
| | - D M A E Jonkers
- Division of Gastroenterology-Hepatology, Department of Internal Medicine, Maastricht University Medical Centre+, Maastricht, The Netherlands
| | - E F Tigchelaar
- Top Institute Food and Nutrition, Wageningen, The Netherlands.,Department of Genetics, University Medical Centre Groningen, University of Groningen, Groningen, The Netherlands
| | - J Dekens
- Top Institute Food and Nutrition, Wageningen, The Netherlands.,Department of Genetics, University Medical Centre Groningen, University of Groningen, Groningen, The Netherlands
| | - A Zhernakova
- Top Institute Food and Nutrition, Wageningen, The Netherlands.,Department of Genetics, University Medical Centre Groningen, University of Groningen, Groningen, The Netherlands
| | - T Ludwig
- Department of Developmental Physiology and Nutrition, Danone Nutricia Research, Utrecht, The Netherlands
| | - A A M Masclee
- Division of Gastroenterology-Hepatology, Department of Internal Medicine, Maastricht University Medical Centre+, Maastricht, The Netherlands
| | - C Wijmenga
- Top Institute Food and Nutrition, Wageningen, The Netherlands.,Department of Genetics, University Medical Centre Groningen, University of Groningen, Groningen, The Netherlands
| | - F J van Schooten
- Department of Pharmacology and Toxicology, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University Medical Centre (MUMC+), Maastricht, The Netherlands
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Engel O, Reiss P, Ludwig T, Riechardt S, Dahlem R, Fisch M. [Late consequences of urethral injuries. Reconstruction options]. Urologe A 2016; 55:479-83. [PMID: 26961356 DOI: 10.1007/s00120-016-0063-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
BACKGROUND Stricture excision and posterior urethroplasty is the most common procedure after posttraumatic urethral strictures. RESULTS Re-strictures and fistulas are treated by repeat urethroplasty. Tension-free anastomosis is prerequisite for surgical success. Urinary incontinence after posttraumatic injuries is treated by an artificial urinary sphincter.
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Affiliation(s)
- O Engel
- Urologische Klinik und Poliklinik, Universitätsklinik Hamburg-Eppendorf, Martinistraße 52, 20246, Hamburg, Deutschland.
| | - P Reiss
- Urologische Klinik und Poliklinik, Universitätsklinik Hamburg-Eppendorf, Martinistraße 52, 20246, Hamburg, Deutschland
| | - T Ludwig
- Urologische Klinik und Poliklinik, Universitätsklinik Hamburg-Eppendorf, Martinistraße 52, 20246, Hamburg, Deutschland
| | - S Riechardt
- Urologische Klinik und Poliklinik, Universitätsklinik Hamburg-Eppendorf, Martinistraße 52, 20246, Hamburg, Deutschland
| | - R Dahlem
- Urologische Klinik und Poliklinik, Universitätsklinik Hamburg-Eppendorf, Martinistraße 52, 20246, Hamburg, Deutschland
| | - M Fisch
- Urologische Klinik und Poliklinik, Universitätsklinik Hamburg-Eppendorf, Martinistraße 52, 20246, Hamburg, Deutschland
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Pabst G, Zimmermann AK, Huth C, Koenig W, Ludwig T, Zierer A, Peters A, Thorand B. Association of low 25-hydroxyvitamin D levels with the frailty syndrome in an aged population: results from the KORA-age Augsburg study. J Nutr Health Aging 2015; 19:258-64. [PMID: 25732209 DOI: 10.1007/s12603-014-0546-9] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
OBJECTIVES Older adults often suffer from vitamin D deficiency and from the frailty syndrome charac-terized by different physical limitations, complicating independent everyday life. Previous studies have suggested a relationship between vitamin D status and the frailty syndrome, but results have been partly inconsistent, particularly regarding the shape of the association. Therefore, our aim was to further assess the association of 25-hydroxyvitamin D (25(OH)D) serum levels and frailty in older participants. DESIGN Cross-sectional population-based study. PARTICIPANTS The study population included 478 men and 462 women of the KORA (COoperative health research in the Region of Augsburg)-Age study born before 1944 examined in 2009. MEASUREMENTS Classification of participants into different frailty states was performed according to the following criteria: weight loss, exhaustion, physical inactivity, slowness, and weakness. PARTICIPANTS who met 1-2 or ≥ 3 of the 5 criteria were classified as prefrail or frail, respectively. Total 25(OH)D was measured in non-fasting serum samples with an enhanced chemiluminescence immunoassay. Sequential logistic regression models adjusted for age, sex, season, lifestyle factors, diseases and biomarkers including parathyroid hormone (PTH) were calculated. RESULTS High levels of 25(OH)D were inversely associated with being prefrail (N=351) or frail (N=38) in the model adjusted for age, sex, season and lifestyle factors. Compared to levels <15 ng/ml, odds ratios (ORs) (95% confidence intervals (CIs) were 0.52 (0.34-0.78) for levels of 15-<20 ng/ml, 0.55 (0.37-0.81) for levels of 20-<30 ng/ml and 0.32 (0.21-0.51) for levels ≥ 30 ng/ml. Additional adjustment for potential mediators including PTH only slightly attenuated these associations. For single frailty-components, significantly decreased ORs were found for exhaustion, physical inactivity and slowness comparing 25(OH)D levels ≥ 30 ng/ml with levels <15 ng/ml. CONCLUSION Subjects with 25(OH)D serum levels ≥ 15 ng/ml were less frequently prefrail or frail.
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Affiliation(s)
- G Pabst
- Barbara Thorand, Helmholtz Zentrum München, GmbH, Institute of Epidemiology II, Ingolstädter Landstraβe 1, D-85764 Neuherberg, Phone: +49-(0)89-3187-4480, Fax: +49-(0)89-3187-3667, E-Mail:
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Ahmad S, Ludwig T, Herrmann M, Mahmoud M, Lippmann W, Seifert H. Phase evaluation during high temperature long heat treatments in the Y2O3–Al2O3–SiO2 system. Ann Ital Chir 2014. [DOI: 10.1016/j.jeurceramsoc.2014.05.025] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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11
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Kruse M, Keyhani-Nejad F, Isken F, Nitz B, Ludwig T, Osterhoff M, Grallert H, Pfeiffer AFH. A high-fat diet during pregnancy and lactation targets GIP-regulated metabolic pathways in male offspring in mice. Exp Clin Endocrinol Diabetes 2014. [DOI: 10.1055/s-0034-1372029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Agarwal M, Nitta R, Dovat S, Li G, Arita H, Narita Y, Fukushima S, Tateishi K, Matsushita Y, Yoshida A, Miyakita Y, Ohno M, Collins VP, Kawahara N, Shibui S, Ichimura K, Kahn SA, Gholamin S, Junier MP, Chneiweiss H, Weissman I, Mitra S, Cheshier S, Avril T, Hamlat A, Le Reste PJ, Mosser J, Quillien V, Carrato C, Munoz-Marmol A, Serrano L, Pijuan L, Hostalot C, Villa SL, Ariza A, Etxaniz O, Balana C, Benveniste ET, Zheng Y, McFarland B, Drygin D, Bellis S, Bredel M, Lotsch D, Engelmaier C, Allerstorfer S, Grusch M, Pichler J, Weis S, Hainfellner J, Marosi C, Spiegl-Kreinecker S, Berger W, Bronisz A, Nowicki MO, Wang Y, Ansari K, Chiocca EA, Godlewski J, Brown K, Kwatra M, Brown K, Kwatra M, Bui T, Nitta R, Li G, Zhu S, Kozono D, Li J, Kushwaha D, Carter B, Chen C, Schulte J, Srikanth M, Das S, Zhang J, Lathia J, Yin L, Rich J, Olson E, Kessler J, Chenn A, Cherry A, Haas B, Lin YH, Ong SE, Stella N, Cifarelli CP, Griffin RJ, Cong D, Zhu W, Shi Y, Clark P, Kuo J, Hu S, Sun D, Bookland M, Darbinian N, Dey A, Robitaille M, Remke M, Faury D, Maier C, Malhotra A, Jabado N, Taylor M, Angers S, Kenney A, Ren X, Zhou H, Schur M, Baweja A, Singh M, Erdreich-Epstein A, Fu J, Koul D, Yao J, Saito N, Zheng S, Verhaak R, Lu Z, Yung WKA, Gomez G, Volinia S, Croce C, Brennan C, Cavenee W, Furnari F, Lopez SG, Qu D, Petritsch C, Gonzalez-Huarriz M, Aldave G, Ravi D, Rubio A, Diez-Valle R, Marigil M, Jauregi P, Vera B, Rocha AADL, Tejada-Solis S, Alonso MM, Gopal U, Isaacs J, Gruber-Olipitz M, Dabral S, Ramkissoon S, Kung A, Pak E, Chung J, Theisen M, Sun Y, Monrose V, Franchetti Y, Sun Y, Shulman D, Redjal N, Tabak B, Beroukhim R, Zhao J, Buonamici S, Ligon K, Kelleher J, Segal R, Haas B, Canton D, Diaz P, Scott J, Stella N, Hara K, Kageji T, Mizobuchi Y, Kitazato K, Okazaki T, Fujihara T, Nakajima K, Mure H, Kuwayama K, Hara T, Nagahiro S, Hill L, Botfield H, Hossain-Ibrahim K, Logan A, Cruickshank G, Liu Y, Gilbert M, Kyprianou N, Rangnekar V, Horbinski C, Hu Y, Vo C, Li Z, Ke C, Ru N, Hess KR, Linskey ME, Zhou YAH, Hu F, Vinnakota K, Wolf S, Kettenmann H, Jackson PJ, Larson JD, Beckmann DA, Moriarity BS, Largaespada DA, Jalali S, Agnihotri S, Singh S, Burrell K, Croul S, Zadeh G, Kang SH, Yu MO, Song NH, Park KJ, Chi SG, Chung YG, Kim SK, Kim JW, Kim JY, Kim JE, Choi SH, Kim TM, Lee SH, Kim SK, Park SH, Kim IH, Park CK, Jung HW, Koldobskiy M, Ahmed I, Ho G, Snowman A, Raabe E, Eberhart C, Snyder S, Agnihotri S, Gugel I, Remke M, Bornemann A, Pantazis G, Mack S, Shih D, Sabha N, Taylor M, Tatagiba M, Zadeh G, Krischek B, Schulte A, Liffers K, Kathagen A, Riethdorf S, Westphal M, Lamszus K, Lee JS, Xiao J, Patel P, Schade J, Wang J, Deneen B, Erdreich-Epstein A, Song HR, Leiss L, Gjerde C, Saed H, Rahman A, Lellahi M, Enger PO, Leung R, Gil O, Lei L, Canoll P, Sun S, Lee D, Ho ASW, Pu JKS, Zhang XQ, Lee NP, Dat PJR, Leung GKK, Loetsch D, Steiner E, Holzmann K, Spiegl-Kreinecker S, Pirker C, Hlavaty J, Petznek H, Hegedus B, Garay T, Mohr T, Sommergruber W, Grusch M, Berger W, Lukiw WJ, Jones BM, Zhao Y, Bhattacharjee S, Culicchia F, Magnus N, Garnier D, Meehan B, McGraw S, Hashemi M, Lee TH, Milsom C, Gerges N, Jabado N, Trasler J, Pawlinski R, Mackman N, Rak J, Maherally Z, Thorne A, An Q, Barbu E, Fillmore H, Pilkington G, Maherally Z, Tan SL, Tan S, An Q, Fillmore H, Pilkington G, Malhotra A, Choi S, Potts C, Ford DA, Nahle Z, Kenney AM, Matlaf L, Khan S, Zider A, Singer E, Cobbs C, Soroceanu L, McFarland BC, Hong SW, Rajbhandari R, Twitty GB, Gray GK, Yu H, Benveniste EN, Nozell SE, Minata M, Kim S, Mao P, Kaushal J, Nakano I, Mizowaki T, Sasayama T, Tanaka K, Mizukawa K, Nishihara M, Nakamizo S, Tanaka H, Kohta M, Hosoda K, Kohmura E, Moeckel S, Meyer K, Leukel P, Bogdahn U, Riehmenschneider MJ, Bosserhoff AK, Spang R, Hau P, Mukasa A, Watanabe A, Ogiwara H, Saito N, Aburatani H, Mukherjee J, Obha S, See W, Pieper R, Nakajima K, Hara K, Kageji T, Mizobuchi Y, Kitazato K, Fujihara T, Otsuka R, Kung D, Nagahiro S, Rajbhandari R, Sinha T, Meares G, Benveniste EN, Nozell S, Ott M, Litzenburger U, Rauschenbach K, Bunse L, Pusch S, Ochs K, Sahm F, Opitz C, von Deimling A, Wick W, Platten M, Peruzzi P, Chiocca EA, Godlewski J, Read R, Fenton T, Gomez G, Wykosky J, Vandenberg S, Babic I, Iwanami A, Yang H, Cavenee W, Mischel P, Furnari F, Thomas J, Ronellenfitsch MW, Thiepold AL, Harter PN, Mittelbronn M, Steinbach JP, Rybakova Y, Kalen A, Sarsour E, Goswami P, Silber J, Harinath G, Aldaz B, Fabius AWM, Turcan S, Chan TA, Huse JT, Sonabend AM, Bansal M, Guarnieri P, Lei L, Soderquist C, Leung R, Yun J, Kennedy B, Sisti J, Bruce S, Bruce R, Shakya R, Ludwig T, Rosenfeld S, Sims PA, Bruce JN, Califano A, Canoll P, Stockhausen MT, Kristoffersen K, Olsen LS, Poulsen HS, Stringer B, Day B, Barry G, Piper M, Jamieson P, Ensbey K, Bruce Z, Richards L, Boyd A, Sufit A, Burleson T, Le JP, Keating AK, Sundstrom T, Varughese JK, Harter P, Prestegarden L, Petersen K, Azuaje F, Tepper C, Ingham E, Even L, Johnson S, Skaftnesmo KO, Lund-Johansen M, Bjerkvig R, Ferrara K, Thorsen F, Takeshima H, Yamashita S, Yokogami K, Mizuguchi S, Nakamura H, Kuratsu J, Fukushima T, Morishita K, Tanaka H, Sasayama T, Tanaka K, Nakamizo S, Mizukawa K, Kohmura E, Tang Y, Vaka D, Chen S, Ponnuswami A, Cho YJ, Monje M, Tateishi K, Narita Y, Nakamura T, Cahill D, Kawahara N, Ichimura K, Tiemann K, Hedman H, Niclou SP, Timmer M, Tjiong R, Rohn G, Goldbrunner R, Timmer M, Tjiong R, Stavrinou P, Rohn G, Perrech M, Goldbrunner R, Tokita M, Mikheev S, Sellers D, Mikheev A, Kosai Y, Rostomily R, Tritschler I, Seystahl K, Schroeder JJ, Weller M, Wade A, Robinson AE, Phillips JJ, Gong Y, Ma Y, Cheng Z, Thompson R, Wang J, Fan QW, Cheng C, Gustafson W, Charron E, Zipper P, Wong R, Chen J, Lau J, Knobbe-Thosen C, Weller M, Jura N, Reifenberger G, Shokat K, Weiss W, Wu S, Fu J, Zheng S, Koul D, Yung WKA, Wykosky J, Hu J, Taylor T, Villa GR, Gomez G, Mischel PS, Gonias SL, Cavenee W, Furnari F, Yamashita D, Kondo T, Takahashi H, Inoue A, Kohno S, Harada H, Ohue S, Ohnishi T, Li P, Ng J, Yuelling L, Du F, Curran T, Yang ZJ, Zhu D, Castellino RC, Van Meir EG, Zhu W, Begum G, Wang Q, Clark P, Yang SS, Lin SH, Kahle K, Kuo J, Sun D. CELL BIOLOGY AND SIGNALING. Neuro Oncol 2013. [DOI: 10.1093/neuonc/not174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Schröder HM, Hoffmann SC, Hecker M, Korff T, Ludwig T. The tetraspanin network modulates MT1-MMP cell surface trafficking. Int J Biochem Cell Biol 2013; 45:1133-44. [PMID: 23500527 DOI: 10.1016/j.biocel.2013.02.020] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2012] [Revised: 02/11/2013] [Accepted: 02/21/2013] [Indexed: 10/27/2022]
Abstract
The membrane-type 1 matrix metalloproteinase (MT1-MMP) drives fundamental physiological and pathophysiological processes. Among other substrates, MT1-MMP cleaves components of the extracellular matrix and activates other matrix-cleaving proteases such as MMP-2. Trafficking is a highly effective means to modulate MT1-MMP cell surface expression, and hence regulate its function. Here, we describe the complex interaction of MT1-MMP with tetraspanins, their effects on MT1-MMP intracellular trafficking and proteolytic function. Tetraspanins are credited as membrane organizers that form a network within the membrane to regulate the trafficking of associated proteins. In short, we found MT1-MMP to interact with the tetraspanin-associated EWI-2 protein by a yeast two-hybrid screen. Immunoprecipitation analysis confirmed this interaction and further revealed that MT1-MMP also stably interacts with distinct tetraspanins (CD9, CD37, CD53, CD63, CD81, and CD82) and the tetraspanin-like MAL protein. By using different MT1-MMP truncation constructs and mutants, we observed that all tetraspanins and MAL associated with the hemopexin domain of MT1-MMP. Moreover, this interaction was independent of O-glycosylation of MT1-MMP and exclusively occurred in the endoplasmic reticulum. Here, the respective subcellular compartment was identified by fitting the MT1-MMP interaction pattern to a model for post-translational processing of MT1-MMP. In addition, tetraspanins differentially affected the cell surface localization of MT1-MMP, its capacity to activate pro-MMP-2, and the collagen invasion capacity. Interestingly, the degree of tetraspanin-MT1-MMP association did not correlate with its impact on MT1-MMP function. Tetraspanins thus distinctly affect MT1-MMP subcellular localization and function, and may constitute an effective mechanism to control MT1-MMP-dependent proteolysis at the cell surface.
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Affiliation(s)
- H M Schröder
- Institute of Physiology and Pathophysiology, Division of Cardiovascular Physiology, Heidelberg University, 69120 Heidelberg, Germany.
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Winkler BE, Koch A, Schoeppenthau H, Ludwig T, Tetzlaff K, Hartig F, Kaehler W, Koehler A, Kanstinger A, Ciscato W, Muth CM. Effects of FLIRT on bubble growth in man. Int J Sports Med 2012; 33:903-8. [PMID: 22706940 DOI: 10.1055/s-0032-1306328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Recompression during decompression has been suggested to possibly reduce the risk of decompression sickness (DCS). The main objective of the current study was to investigate the effects of FLIRT (First Line Intermittent Recompression Technique) on bubble detection in man. 29 divers underwent 2 simulated dives in a dry recompression chamber to a depth of 40 msw (500 kPa ambient pressure) in random order. A Buehlmann-based decompression profile served as control and was compared to an experimental profile with intermittent recompression during decompression (FLIRT). Circulating bubbles in the right ventricular outflow tract (RVOT) were monitored by Doppler ultrasound and quantified using the Spencer scoring algorithm. Heat shock protein 70 (HSP70), thrombocytes, D-Dimers and serum osmolarity were analyzed before and 120 min after the dive. Both dive profiles elicited bubbles in most subjects (range Spencer 0-4). However, no statistically significant difference was found in bubble scores between the control and the experimental dive procedure. There was no significant change in either HSP70, thrombocytes, and D-Dimers. None of the divers had clinical signs or symptoms suggestive of DCS. We conclude that FLIRT did not significantly alter the number of microbubbles and thus may not be considered superior to classical decompression in regards of preventing DCS.
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Affiliation(s)
- B E Winkler
- Department of Anaesthesiology, University of Ulm, Ulm, Germany.
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Ludwig T, Gaida D, Keysers C, Pinnekamp J, Bongards M, Kern P, Wolf C, Sousa Brito AL. An advanced simulation model for membrane bioreactors: development, calibration and validation. Water Sci Technol 2012; 66:1384-1391. [PMID: 22864421 DOI: 10.2166/wst.2012.249] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Membrane wastewater treatment plants (WWTPs) have several advantages compared with conventionally designed WWTPs with classical purification techniques. The filtration process is the key to their commercial success in Germany with respect to energy consumption and effectiveness, enabled by the optimization of filtration using a dynamic simulation model. This work is focused on the development of a robust, flexible and practically applicable membrane simulation model for submerged hollow-fibre and flat-sheet membrane modules. The model is based on standard parameters usually measured on membrane WWTPs. The performance of the model is demonstrated by successful calibration and validation for three different full-scale membrane WWTPs achieving good results. Furthermore, the model is combinable with Activated Sludge Models.
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Affiliation(s)
- T Ludwig
- Cologne University of Applied Sciences, Institute of Automation and Industrial IT, Steinmuellerallee 1, 51643 Gummersbach, Germany.
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Rudolf J, Ansari P, Kern C, Ludwig T, Baumgartner S. Effects of different extraction buffers on peanut protein detectability and lateral flow device (LFD) performance. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2011; 29:1-11. [PMID: 22043826 DOI: 10.1080/19440049.2011.619151] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Abstract
The accidental uptake of peanuts can cause severe health reactions in allergic individuals. Reliable determination of traces of peanuts in food products is required to support correct labelling and therefore minimise consumers' risk. The immunoanalytical detectability of potentially allergenic peanut proteins is dependent on previous heat treatment, the extraction capacity of the applied buffer and the specificity of the antibody. In this study a lateral flow device (LFD) for the detection of peanut protein was developed and the capacity of 30 different buffers to extract proteins from mildly and strongly roasted peanut samples as well as their influence on the test strip performance were investigated. Most of the tested buffers showed good extraction capacity for putative Ara h 1 from mildly roasted peanuts. Protein extraction from dark-roasted samples required denaturing additives, which were proven to be incompatible with LFD performance. High-pH buffers increased the protein yield but inhibited signal generation on the test strip. Overall, the best results were achieved using neutral phosphate buffers but equal detectability of differently altered proteins due to food processing cannot be assured yet for immunoanalytical methods.
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Affiliation(s)
- J Rudolf
- Christian Doppler Laboratory for Rapid Test Systems for Allergenic Food Contaminants, University of Natural Resources and Life Sciences, Vienna, Austria
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Furnari F, Fenton T, Nathanson D, de Alberquerque CP, Kuga D, Wanami A, Dang J, Yang H, Tanaka K, Gao L, Oba-Shinjo S, Uno M, Inda MDM, Bachoo R, James CD, DePinho R, Vandenberg S, Zhou H, Marie S, Mischel P, Cavenee W, Szerlip N, Pedraza A, Huse J, Mikkelsen T, Brennan C, Szerlip N, Castellani RJ, Ivanova S, Gerzanich VV, Simard JM, Ito M, See W, Mukherjee J, Ohba S, Tan IL, Pieper RO, Lukiw WJ, Culicchia F, Pogue A, Bhattacharjee S, Zhao Y, Proescholdt MA, Merrill M, Storr EM, Lohmeier A, Brawanski A, Abraham S, Jensen R, Khatua S, Gopal U, Du J, He F, Golub T, Isaacs JS, Dietrich J, Kalogirou-Valtis Y, Ly I, Scadden D, Proschel C, Mayer-Proschel M, Rempel SA, Schultz CR, Golembieski W, Brodie C, Mathew LK, Skuli N, Mucaj V, Imtiyaz HZ, Venneti S, Lal P, Zhang Z, Davuluri RV, Koch C, Evans S, Simon MC, Ranganathan P, Clark P, Salamat S, Kuo JS, Kalejta RF, Bhattacharjee B, Renzette N, Moser RP, Kowalik TF, McFarland BC, Ma JY, Langford CP, Gillespie GY, Yu H, Zheng Y, Nozell SE, Huszar D, Benveniste EN, Lawrence JE, Cook NJ, Rovin RA, Winn RJ, Godlewski JA, Ogawa D, Bronisz A, Lawler S, Chiocca EA, Lee SX, Wong ET, Swanson KD, Liu KW, Feng H, Bachoo R, Kazlauskas A, Smith EM, Symes K, Hamilton RL, Nagane M, Nishikawa R, Hu B, Cheng SY, Silber J, Jacobsen A, Ozawa T, Harinath G, Brennan CW, Holland EC, Sander C, Huse JT, Sengupta R, Dubuc A, Ward S, Yang L, Northcott P, Kroll K, Taylor M, Wechsler-Reya R, Rubin J, Chu WT, Lee HT, Huang FJ, Aldape K, Yao J, Steeg PS, Lu Z, Xie K, Huang S, Sim H, Agudelo-Garcia PA, Hu B, Viapiano MS, Hu B, Agudelo-Garcia PA, Saldivar J, Sim H, Dolan C, Mora M, Nuovo G, Cole S, Viapiano MS, Stegh AH, Ryu MJ, Liu Y, Du J, Zhong X, Marwaha S, Li H, Wang J, Salamat S, Chang Q, Zhang J, Ng HK, Yang L, Poon WS, Zhou L, Pang JC, Chan A, Didier S, Kwiatkowska A, Ennis M, Fortin S, Rushing E, Eschbacher J, Tran N, Symons M, Roldan G, McIntyre JB, Easaw J, Magliocco A, Wykosky J, Cavenee W, Furnari F, Lu D, Mreich E, Chung S, Teo C, Wheeler H, McDonald KL, Lawn S, Forsyth P, Sonabend AM, Lei L, Kennedy B, Soderquist C, Guarnieri P, Leung R, Yun J, Sisti J, Castelli M, Bruce S, Bruce R, Ludwig T, Rosenfeld S, Bruce JN, Canoll P, Lamszus K, Schulte A, Gunther HS, Riethdorf S, Phillips HS, Westphal M, Siegal T, Zrihan D, Granit A, Lavon I, Singh M, Chandra J, Ogawa D, Nakashima H, Godlewski J, Chiocca AE, Kapoor GS, Poptani H, Ittyerah R, O'Rourke DM, Sadraei NH, Burgett M, Ahluwalia M, Tipps R, Khosla D, Weil R, Nowacki A, Prayson R, Shi T, Gladson C, Moeckel S, Meyer K, Bosserhoff A, Spang R, Leukel P, Vollmann A, Jachnick B, Stangl C, Proescholdt M, Bogdahn U, Hau P, Kaur G, Sun M, Kaur R, Bloch O, Jian B, Parsa AT, Hossain A, Shinojima N, Gumin J, Feng G, Lang FF, Li L, Yang CR, Chakraborty S, Hatanpaa K, Chauncey S, Jiwani A, Habib A, Nguyen T, Nakashima H, Chiocca EA, Munson J, Machaidze R, Kaluzova M, Bellamkonda R, Hadjipanayis CG, Zhang Y, McFarland B, Bredel M, Benveniste EN, Lee SH, Zerrouqi A, Khwaja F, Devi NS, Van Meir EG, Haseley A, Boone S, Wojton J, Yu L, Kaur B, Wojton JA, Naduparambil J, Denton N, Chakravarti A, Kaur B, Conrad CA, Wang X, Sheng X, Nilsson C, Marshall AG, Emmett MR, Hu Y, Mark L, Zhou YHZ, Dhruv H, McDonough W, Tran N, Armstrong B, Tuncali S, Eschbacher J, Kislin K, Berens M, Plas D, Gallo C, Stringer K, Kendler A, McPherson C, Castelli MA, Ellis JA, Assanah M, Bruce JN, Canoll P, Ogden A, Liang J, Piao Y, deGroot JF, Gordon N, Patel D, Chakravarti A, Palanichamy K, Hervey-Jumper S, Wang A, He X, Zhu T, Heth J, Muraszko K, Fan X, Nakashima H, Nguyen T, Chiocca EA, Liu WM, Huang P, Rani S, Stettner MR, Jerry S, Dai Q, Kappes J, Tipps R, Gladson CL, Chakravarty D, Pedraza A, Koul D, Alfred Yung WK, Brennan CW, Jensen SA, Luciano J, Calvert A, Nagpal V, Stegh A, Kang SH, Yu MO, Lee MG, Chi SG, Chung YG, Cooper MK, Valadez JG, Grover VK, Kouri FM, Chin L, Stegh AH, Ahluwalia MS, Khosla D, Weil RJ, McGraw M, Huang P, Prayson R, Nowacki A, Barnett GH, Gladson C, Kang C, Zou J, Lan F, Yue X, Shi Z, Zhang K, Han L, Pu P, Seaman BF, Tran ND, McDonough W, Dhruv H, Kislin K, Berens M, Battiste JD, Sirasanagandla S, Maher EA, Bachoo R, Sugiarto S, Persson A, Munoz EG, Waldhuber M, Vandenberg S, Stallcup W, Philips J, Berger MS, Bergers G, Weiss WA, Petritsch C. CELL BIOLOGY AND SIGNALING. Neuro Oncol 2011; 13:iii10-iii25. [PMCID: PMC3199169 DOI: 10.1093/neuonc/nor148] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2023] Open
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Kon N, Zhong J, Kobayashi Y, Li M, Szabolcs M, Ludwig T, Canoll PD, Gu W. Roles of HAUSP-mediated p53 regulation in central nervous system development. Cell Death Differ 2011; 18:1366-75. [PMID: 21350561 DOI: 10.1038/cdd.2011.12] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
The deubiquitinase HAUSP (herpesvirus-associated ubiquitin-specific protease; also called USP7) has a critical role in regulating the p53-Mdm2 (murine double minute 2) pathway. By using the conventional knockout approach, we previously showed that hausp inactivation leads to early embryonic lethality. To fully understand the physiological functions of hausp, we have generated mice lacking hausp specifically in the brain and examined the impacts of this manipulation on brain development. We found that deletion of hausp in neural cells resulted in neonatal lethality. The brains from these mice displayed hypoplasia and deficiencies in development, which were mainly caused by p53-mediated apoptosis. Detailed analysis also showed an increase of both p53 levels and p53-dependent transcriptional activation in hausp knockout brains. Notably, neural cell survival and brain development of hausp-mutant mice can largely be restored in the p53-null background. Nevertheless, in contrast to the case of mdm2- and mdm4 (murine double minute 4)-mutant mice, inactivation of p53 failed to completely rescue the neonatal lethality of these hausp-mutant mice. These results indicate that HAUSP-mediated p53 regulation is crucial for brain development, and also suggest that both the p53-dependent and the p53-independent functions of HAUSP contribute to the neonatal lethality of hausp-mutant mice.
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Affiliation(s)
- N Kon
- Institute for Cancer Genetics, Columbia University, New York, NY 10032, USA
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Ludwig T, Kern P, Bongards M, Wolf C. Simulation and optimization of an experimental membrane wastewater treatment plant using computational intelligence methods. Water Sci Technol 2011; 63:2255-2260. [PMID: 21977647 DOI: 10.2166/wst.2011.135] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The optimization of relaxation and filtration times of submerged microfiltration flat modules in membrane bioreactors used for municipal wastewater treatment is essential for efficient plant operation. However, the optimization and control of such plants and their filtration processes is a challenging problem due to the underlying highly nonlinear and complex processes. This paper presents the use of genetic algorithms for this optimization problem in conjunction with a fully calibrated simulation model, as computational intelligence methods are perfectly suited to the nonconvex multi-objective nature of the optimization problems posed by these complex systems. The simulation model is developed and calibrated using membrane modules from the wastewater simulation software GPS-X based on the Activated Sludge Model No.1 (ASM1). Simulation results have been validated at a technical reference plant. They clearly show that filtration process costs for cleaning and energy can be reduced significantly by intelligent process optimization.
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Affiliation(s)
- T Ludwig
- Institute for Automation and Industrial IT, Cologne University of Applied Sciences, Steinmuellerallee 1, 51643 Gummersbach, Germany.
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He H, Emmett MR, Marshall AG, Ji Y, Conrad CA, Priebe W, Colman H, Lang FF, Madden TL, Kristoffersen K, Stockhausen MT, Poulsen HS, Binder ZA, Orr B, Lim M, Weingart JD, Brem H, Olivi A, Riggins GJ, Gallia GL, Litofsky NS, Miller DC, Rath P, Anthony DC, Feng Q, Franklin C, Pei L, Free A, Kirk MD, Shi H, Timmer M, Theiss H, Juerchott K, Ries C, Paron I, Franz W, Selbig J, Guo K, Tonn JC, Schichor C, Zhou YH, Hu Y, Pioli PD, Rajneesh K, Limoli CL, Yu L, Hess KR, Linskey ME, Faber F, Guo K, Jaeger D, Thorsteinsdottir J, Albrecht V, Tonn JC, Schichor C, Price R, Song J, Zimmerman P, Duale H, Rivera A, Kaur B, Parada L, Cook C, Chiocca EA, Kwon CH, Munoz DM, Guha A, Estrada-Bernal A, Van Brocklyn JR, Gu C, Mahasenan KV, Joshi K, Gupta S, Mattson A, Li C, Nakano I, Chi AS, Rheinbay E, Wakimoto H, Gillespie S, Kasif S, Rabkin SD, Martuza RL, Bernstein BE, Skirboll SL, Wurdak H, Zhu S, Romero A, Lorger M, Watson J, Chiang CY, Zhang J, Natu VS, Lairson LL, Walker JR, Trussell CM, Harsh GR, Vogel H, Felding-Habermann B, Orth AP, Miraglia LJ, Rines DR, Schultz PG, Hide T, Takezaki T, Nakamura H, Makino K, Kuratsu JI, Kondo T, Yao J, Kim YW, Koul D, Almeida JS, Weinstein JN, Alfred Yung WK, Joshi K, Miyazaki T, Chaudhury AR, Nakano I, Wong AJ, Del Vecchio C, Mitra S, Han SY, Holgado-Madruga M, Gupta P, Golebiewska A, Brons NH, Bjerkvig R, Niclou SP, Ramm P, Vollmann-Zwerenz A, Beier C, Aigner L, Bogdahn U, Kalbitzer HR, Hau P, Sanzey M, Golebiewska A, Vallar L, Niclou SP, Tamura K, Aoyagi M, Ando N, Ogishima T, Wakimoto H, Yamamoto M, Ohno K, Perin A, Fung KH, Longatti P, Guiot MC, Del Maestro RF, Rossi S, Stechishin O, Weiss S, Stifani S, Goodman L, Gao F, Gumin J, Ezhilarasan R, Love P, George A, Colman H, Lang F, Aldape K, Sulman EP, Soeda A, Lee DH, Shaffrey ME, Oldfield EH, Park DM, Dietrich J, Han R, Noble M, Yang MY, Liu X, Madhankumar AB, Sheehan J, Slagle-Webb B, Connor JR, Fu J, Shen RJ, Colman H, Lang FF, Alfred Yung WK, Koul D, Kaluzova M, Machaidze R, Nduom ENK, Burden CT, Hadjipanayis CG, Lei L, Sonabend A, Guarnieri P, Ludwig T, Rosenfeld S, Bruce J, Canoll P, Vaillant BD, Bhat K, Balasubramaniyam V, Wang S, Gumin J, Sulman E, Lang F, Aldape K, Colman H, Sulman EP, Ezhilarasan R, Goodman LD, Love PN, George A, Aldape K, Soules M, Zhu T, Flack C, Talsma C, Hamm L, Muraszko K, Fan X, Aoyagi M, Matsuoka Y, Tamura K, Ando N, Kawano Y, Ohno K, Kobayashi D, Kumagai J, Frank RT, Najbauer J, Aboody KS, Aboody KS, Najbauer J, Metz M, Garcia E, Aramburo S, Valenzuela V, Gutova M, Annala AJ, Barish M, Danks M, Kim SU, Portnow J, Hofstetter C, Gursel D, Mubita L, Holland E, Boockvar J, Monje M, Freret M, Masek M, Edwards MS, Fisher PG, Vogel H, Beachy P. Stem Cells. Neuro Oncol 2010. [DOI: 10.1093/neuonc/noq116.s18] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Long PM, Wesley UV, Jaworski DM, Rana M, Kiehl TR, So K, Gould P, Ajewung N, Kamnasaran D, Emmett MR, Wang X, Marshall AG, Ji Y, Fokt I, Skora S, Conrad CA, Priebe W, Zhu H, Cao X, Keir S, Ali-Osman F, Lo HW, Da Fonseca CO, Arun V, Wiley JC, Kaur H, Guha A, Fenton K, Abdelwahab MG, Stafford P, Rho JM, Preul MC, Scheck AC, Brossier NM, Carroll SL, Gajadhar A, Guha A, Mukherjee J, Wolf A, Hawkins C, Guha A, Costa P, Cardoso ALC, de Almeida LP, de Lima MCP, Canoll P, Bruce J, Lavon I, Granit A, Einstein O, Ben-Hur T, Siegal T, Pang JC, Poon WS, Zhou L, Ng HK, Rovin RA, Lawrence JE, Segula JJ, Winn RJ, Patil S, Burzynski SR, Mrowczynski E, Grela K, Cheng S, Liu K, Feng H, Bacho R, Kazlauskas A, Smith EM, Symes K, Hu B, Lee CY, Fotovati A, Dunn SE, Proescholdt MA, Storr EM, Lohmeier A, Brawanski A, Hu B, Feng H, Jarzynka MJ, Liu K, Ravichandran KS, Vuori K, Tang C, Nshikawa R, Johns TG, Furnari FB, Cavenee WK, Cheng S, Zhong J, O'Neill GM, Deleyrolle LP, Rahman M, Dunbar EM, Caldeira MA, Reynolds BA, Liu X, Yacyshyn S, Dasgupta B, Han X, Yang X, Wheeler CG, Filippova N, Langford CP, Ding Q, Fathallah HM, Gillespie GY, Nabors LB, Davidson TB, Gortalum F, Ji L, Engell K, Sposto R, Asgharzadeh S, Erdreich-Epstein A, Lawn SO, Weiss S, Senger D, Forsyth P, Latha K, Chumbalkar V, Li M, Gururaj A, Hwang Y, Maywald R, Dakeng S, Dao L, Baggerly K, Sawaya R, Aldape K, Cavenee W, Furnari F, Bogler O, Hwang Y, Chumbalkar V, Latha K, Bogler O, Gururaj A, Bogler O, Chumbalkar V, Arumugam J, Dao L, Baggerly K, Priebe W, Bogler O, Sim H, Pineda CA, Pan Y, Hu B, Viapiano MS, Van Schaick JA, Akagi K, Burkett S, DiFabio C, Tuskan R, Walrath J, Reilly K, Dai B, Jing Z, Kang SH, Li D, Xie K, Huang S, Gong X, Vuong Y, Bota DA, Stegh AH, Furnari F, Inda MDM, Bonavia R, Mukasa A, Narita Y, Sah D, Vandenberg S, Brennan C, Johns T, Bachoo R, Hadwiger P, Tan P, Tan P, DePinho R, Cavenee W, Kusne Y, Meerson A, Rushing EJ, Yang W, Aldape K, McDonough W, Kislin K, Loftus JC, Berens M, Lu Z, Ghosh S, Verma A, Zhou H, Chin S, Bruggers C, Kestle J, Khatua S, Broekman ML, Maas NS, Skog J, Breakefield XO, Sena-Esteves M, de Vrij J, Lamfers M, Maas N, Dirven C, Esteves M, Broekman M, Chidambaram A, Dumur CI, Graf M, Vanmeter TE, Fillmore HL, Broaddus WC, Silber J, Ozawa T, Kastenhuber E, Djaballah H, Holland EC, Huse JT, Wolf A, Agnihotri S, Munoz D, Hawkins C, Guha A, Han JE, Albesiano E, Pradilla G, Lim M, Alshami J, Sabau C, Seyed Sadr M, Anan M, Seyed Sadr E, Siu V, Del Maestro R, Trinh G, Le P, Petrecca K, Sonabend AM, Soderquist C, Lei L, Guarnieri P, Leung R, Yun J, Sisti J, Castelli M, Bruce S, Bruce R, Ludwig T, Rosenfeld S, Bruce JN, Canoll P, Phillips JJ, Huillard E, Polley MY, Rosen SD, Rowitch DH, Werb Z, Sarkar C, Jha P, Pathak P, Suri V, Sharma MC, Chattopadhyay P, Chosdol K, Suri A, Gupta D, Mahapatra AK, Kapoor GS, Zhan Y, Boockvar JA, O'Rourke DM, Kwatra MM, Kim JW, Park CK, Han JH, Park SH, Kim SK, Jung HW, Narayanan R, Levin BS, Maeder ML, Joung JK, Nutt CL, Louis DN, Dudley A, Jayaram P, Pei Z, Shi X, Laterra J, Watkins PA, Mawrin C, Rempel SA, McClung HM, McFarland BC, Nozell SE, Huszar D, Benveniste EN, Burton T, Eisenstat DD, Gibson SB, Lukiw WJ, Cui JG, Li YY, Zhao Y, Culicchia F, See W, Pieper R, Luchman A, Stechishin O, Nguyen S, Kelly J, Blough M, Cairncross G, Weiss S, Shah SR, Mohyeldin A, Adams H, Garzon-Muvdi T, Aprhys C, Quinones-Hinojosa A, Weeks AC, Restrepo A, Arun V, Ivanchuk S, Smith C, Rutka JT, Sengupta R, Yang L, Burbassi S, Zhang B, Markant SL, Yang ZJ, Meucci O, Wechsler-Reya RJ, Rubin JB, Wykosky J, Mukasa A, Chin L, Cavenee W, Furnari F, Auvergne RM, Sim FJ, Wang S, Chandler-Militello D, Burch J, Li X, Bennet A, Mohile N, Pilcher W, Walter K, Johnson M, Achanta P, Quinones-Hinojosa A, Natesan S, Goldman SA, Beauchamp AS, Gibo DM, Wykosky J, Debinski W, Jiang H, Martin V, Gomez-Manzano C, Johnson DG, Alonso M, White EJ, Xu J, McDonnell T, Shinojima N, Fueyo J, Sandhya Rani MR, Huang P, Prayson R, Hedayat H, Sloan AE, Novacki A, Ahluwalia MS, Tipps R, Gladson CL, Liu JL, Mao Z, Xu J, Fueyo J, Yung WKA, Bhat K, Salazar K, Balasubramaniyan V, Vaillant B, Hollingsworth F, Gumin J, Diefes K, Patel D, Lang F, Colman H, Aldape K, Parsyan A, Shahbazian D, Alain T, Martineau Y, Petroulakis E, Larsson O, Gkogkas C, Topisirovic I, Mathonnet G, Tettweiler G, Hellen C, Pestova T, Svitkin Y, Sonenberg N, Zerrouqi A, Pyrzynska B, Van Meir E, Twitty GB, Nozell SE, Hong SW, Benveniste EN, Lee HK, Finniss S, Xiang C, Cazacu S, Brodie C, Ginn KF, Wise A, Farassati F, Nozell SE, Hong SW, Twitty GB, McFarland BC, Benveniste EN, Brown C, Barish M, deCarvalho AC, Hasselbach L, Nelson K, Lemke N, Schultz L, Mikkelsen T, Onvani S, Kongkham P, Smith CA, Rutka JT, Bier A, Finniss S, Hershkovitz H, Kahana S, Xiang C, Cazacu S, Decarvalho A, Brodie C, Massey SC, Swanson KR, Canoll P. Cell Biology and Signaling. Neuro Oncol 2010. [DOI: 10.1093/neuonc/noq116.s2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Zhou G, Smilenov LB, Lieberman HB, Ludwig T, Hall EJ. RADIOSENSITIVITY TO HIGH ENERGY IRON IONS IS INFLUENCED BY HETEROZYGOSITY for ATM, RAD9 and BRCA1. Adv Space Res 2010; 46:681-686. [PMID: 24431481 PMCID: PMC3890108 DOI: 10.1016/j.asr.2010.02.026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Loss of function of DNA repair genes has been implicated in the development of many types of cancer. In the last several years, heterozygosity leading to haploinsufficiency for proteins involved in DNA repair was shown to play a role in genomic instability and carcinogenesis after DNA damage is induced, for example by ionizing radiation. Since the effect of heterozygosity for one gene is relatively small, we hypothesize that predisposition to cancer could be a result of the additive effect of heterozygosity for two or more genes critical to pathways that control DNA damage signaling, repair or apoptosis. We investigated the role of heterozygosity for Atm, Rad9 and Brca1 on cell oncogenic transformation and cell survival induced by 1GeV/n 56Fe ions. Our results show that cells heterozygous for both Atm and Rad9 or Atm and Brca1 have high survival rates and are more sensitive to transformation by high energy Iron ions when compared with wild-type controls or cells haploinsufficient for only one of these proteins. Since mutations or polymorphisms for similar genes exist in a small percentage of the human population, we have identified a radiosensitive sub-population. This finding has several implications. First, the existence of a radiosensitive sub-population may distort the shape of the dose-response relationship. Second, it would not be ethical to put exceptionally radiosensitive individuals into a setting where they may potentially be exposed to substantial doses of radiation.
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Affiliation(s)
- G Zhou
- Center for Radiological Research, Columbia University Medical Center, New York, NY10032, USA
| | - L B Smilenov
- Center for Radiological Research, Columbia University Medical Center, New York, NY10032, USA
| | - H B Lieberman
- Center for Radiological Research, Columbia University Medical Center, New York, NY10032, USA
| | - T Ludwig
- Institute for Cancer Genetics, Columbia University Medical Center, New York, NY 10032, USA
| | - E J Hall
- Center for Radiological Research, Columbia University Medical Center, New York, NY10032, USA
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Ludwig T, Ramthor M, Krüger K. [Interventional therapy of an iliac arteriovenous fistula with partially thrombosed venous aneurysm as the cause of a pulmonary embolism]. ROFO-FORTSCHR RONTG 2010; 182:717-8. [PMID: 20405370 DOI: 10.1055/s-0029-1245356] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Tycko B, Gonda T, Shakya R, Quante M, Varro A, Wang T, Bhowick N, Ludwig T. 224 Epigenetics of carcinoma-associated myofibroblasts: implications for anti-cancer therapies. EJC Suppl 2010. [DOI: 10.1016/s1359-6349(10)70251-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Abstract
Hausp is a deubiquitinase that has been shown to regulate the p53-Mdm2 pathway. Cotransfection of p53 and Hausp stabilizes p53 through the removal of ubiquitin moieties from polyubiquitinated p53. Interestingly, knockout or RNA interference-mediated knockdown of Hausp in human cells also resulted in the stabilization of p53 due to the destabilization of Mdm2, suggesting a dynamic role of Hausp in p53 activation. To understand the physiological functions of Hausp, we generated hausp knockout mice. Hausp knockout mice die during early embryonic development between embryonic days E6.5 and E7.5. The hausp knockout embryos showed p53 activation, but no apparent increase in apoptosis. Embryonic lethality was caused by a dramatic reduction in proliferation and termination in development, in part due to p53 activation and/or abrogation of p53-independent functions. Although deletion of p53 did not completely rescue the embryonic lethality of the hausp knockout, embryonic development was extended in both hausp and p53 double knockout embryos. These data show that Hausp has a critical role in regulating the p53-Mdm2 pathway.
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Affiliation(s)
- N Kon
- Institute for Cancer Genetics, Columbia University, New York, NY 10032, USA
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Abstract
AIM In response to aldosterone endothelial cells swell and stiffen. Although amiloride-sensitive sodium and water uptake is known to be involved, the underlying mechanisms are yet unclear. We tested the hypothesis whether the intracellular accumulation of water or organic matter is responsible for the structural and functional alterations. METHODS Atomic force microscopy was used as an imaging tool and a mechanical nanosensor. Cell water, organic cell matter and cell pressure was measured at single cell level in human umbilical vein endothelial cells (HUVEC). Furthermore, we tested by means of a miniature perfusion chamber in vitro the physical robustness to blood flow of the aldosterone-treated endothelium. RESULTS In response to a three-day treatment with 1 nM aldosterone HUVEC swell. To our surprise, cell water decreased from 82+/-6% to 71+/-5% while intracellular organic matter increased from 18+/-1.8% to 29+/-3.0%. These changes were paralleled by a rise in cell pressure of 114%, measured in living HUVEC in vitro. Blood flow across the endothelium was found significantly altered after aldosterone treatment. Imaging the endothelial monolayer after blood perfusion disclosed large gaps between cells treated with aldosterone. The mineralocorticoid receptor blockers, spironolactone and eplerenone could prevent the aldosterone actions. CONCLUSION Mild aldosteronism causes intracellular accumulation of organic matter at the cost of cell water. This makes endothelium stiff and vulnerable to shear stress. The measurements could explain clinical observations that high blood pressure combined with high plasma aldosterone concentration may damage the endothelium of blood vessels.
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Affiliation(s)
- H Oberleithner
- Institute of Physiology II, University Münster, Germany.
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Hillebrand U, Hausberg M, Stock C, Shahin V, Nikova D, Riethmüller C, Kliche K, Ludwig T, Schillers H, Schneider SW, Oberleithner H. 17β-estradiol increases volume, apical surface and elasticity of human endothelium mediated by Na+/H+ exchange. Cardiovasc Res 2006; 69:916-24. [PMID: 16412402 DOI: 10.1016/j.cardiores.2005.11.025] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2005] [Revised: 11/09/2005] [Accepted: 11/20/2005] [Indexed: 11/20/2022] Open
Abstract
OBJECTIVE 17beta-estradiol is known to delay the onset of atherosclerosis in women but cellular mechanisms are still unclear. Estrogens bind to specific receptors and initiate a signaling cascade that involves the activation of plasma membrane Na(+)/H(+) exchange. We hypothesized that estrogens interfere with ion transport across the plasma membrane and thus control endothelial structure and function. Therefore, we investigated the effects of the sex steroids 17beta-estradiol, progesterone, and testosterone on volume, apical surface and elasticity in human endothelium. METHODS The atomic force microscope was used as an imaging tool and as an elasticity sensor. We applied the antiestrogen tamoxifen, the Na(+)/H(+) exchange blocker cariporide and the epithelial Na(+)channel blocker amiloride to elucidate the role of transmembrane ion transport in hormone-treated human umbilical vein endothelial cells (HUVEC). RESULTS Incubation with 17beta-estradiol for 72 h led to a dose-dependent increase of endothelial cell volume (41%), apical cell surface (22%), and cell elasticity (53%) as compared to non-17beta-estradiol treated controls. Block of the 17beta-estradiol receptor by tamoxifen and of plasma membrane Na(+)/H(+) exchange by cariporide prevented the hormone-induced changes. Progesterone and testosterone were ineffective. CONCLUSIONS 17beta-estradiol increases HUVEC water content and HUVEC elasticity mediated by activated estrogen receptors. The estrogen response depends on the activation of plasma membrane Na(+)/H(+) exchange. The increase in endothelial cell elasticity could be one of the vasoprotective mechanisms postulated for 17beta-estradiol.
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Affiliation(s)
- U Hillebrand
- Department of Internal Medicine D, University of Muenster, Germany.
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Abstract
MOTIVATION The computation of large phylogenetic trees with statistical models such as maximum likelihood or bayesian inference is computationally extremely intensive. It has repeatedly been demonstrated that these models are able to recover the true tree or a tree which is topologically closer to the true tree more frequently than less elaborate methods such as parsimony or neighbor joining. Due to the combinatorial and computational complexity the size of trees which can be computed on a Biologist's PC workstation within reasonable time is limited to trees containing approximately 100 taxa. RESULTS In this paper we present the latest release of our program RAxML-III for rapid maximum likelihood-based inference of large evolutionary trees which allows for computation of 1.000-taxon trees in less than 24 hours on a single PC processor. We compare RAxML-III to the currently fastest implementations for maximum likelihood and bayesian inference: PHYML and MrBayes. Whereas RAxML-III performs worse than PHYML and MrBayes on synthetic data it clearly outperforms both programs on all real data alignments used in terms of speed and final likelihood values. Availability SUPPLEMENTARY INFORMATION RAxML-III including all alignments and final trees mentioned in this paper is freely available as open source code at http://wwwbode.cs.tum/~stamatak CONTACT stamatak@cs.tum.edu.
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Affiliation(s)
- A Stamatakis
- Department of Computer Science, Technical University of Munich Boltzmannstrasse 3, D-85748 München, Germany.
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Ludwig T, Le Borgne R, Hoflack B. Roles for mannose-6-phosphate receptors in lysosomal enzyme sorting, IGF-II binding and clathrin-coat assembly. Trends Cell Biol 2004; 5:202-6. [PMID: 14731450 DOI: 10.1016/s0962-8924(00)89000-5] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Two related transmembrane proteins in mammalian cells bind the mannose 6-phosphate recognition marker present on all soluble lysosomal hydrolases. Recent studies of cells that express only one or neither of these proteins have shed light not only on their function in directing lysosomal enzymes into the endocytic pathway but also on their critical role in transport vesicle formation in the trans Golgi network. One of these proteins also binds insulin-like growth factor II (IGF-II) and may be an important part of the IGF-dependent system that regulates development.
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Affiliation(s)
- T Ludwig
- Dept of Genetics and Development, Columbia University, 701 W 168th Street, New York, NY 10032, USA
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Leonhardt G, Weber J, de Greiff A, Ludwig T, Wiedemayer H, Forsting M, Hufnagel A. Postiktale MR-Perfusionsbildgebung bei fokaler Epilepsie. Akt Neurol 2004. [DOI: 10.1055/s-2004-833113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Oberleithner H, Schneider SW, Albermann L, Hillebrand U, Ludwig T, Riethmüller C, Shahin V, Schäfer C, Schillers H. Endothelial Cell Swelling by Aldosterone. J Membr Biol 2003; 196:163-72. [PMID: 14724742 DOI: 10.1007/s00239-003-0635-6] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2003] [Indexed: 10/26/2022]
Abstract
There is accumulating evidence that mineralocorticoids not only act on kidney but also on the cardiovascular system. We investigated the response of human umbilical venous endothelial cells (HUVECs) to aldosterone at a time scale of 20 minutes in absence and presence of the aldosterone antagonist spironolactone or other transport inhibitors. We applied atomic force microscopy (AFM), which measures cell volume and volume shifts between cytosol and cell nucleus. We observed an immediate cell volume increase (about 10%) approximately 1 min after addition of aldosterone (0.1 micromol/l), approaching a maximum (about 18%) 10 min after aldosterone treatment. Cell volume returned to normal 20 min after hormone exposure. Spironolactone (1 micromol/l) or amiloride (1 micromol/l) prevented the late aldosterone-induced volume changes but not the immediate change observed 1 min after hormone exposure. AFM revealed nuclear swelling 5 min after aldosterone addition, followed by nuclear shrinkage 15 min later. The Na(+)/H(+) exchange blocker cariporide (10 micromol/l) was ineffective. We conclude: (i). Aldosterone induces immediate (1 min) swelling independently of plasma membrane Na(+) channels and intracellular mineralocorticoid receptors followed by late mineralocorticoid receptor- and Na(+)-channel-dependent swelling. (ii). Intracellular macromolecule shifts cause the changes in cell volume. (iii). Both amiloride and spironolactone may be useful for medical applications to prevent aldosterone-induced vasculopathies.
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Affiliation(s)
- H Oberleithner
- Institute of Physiology I, Nanolab, University of Münster, Robert-Koch-Str. 27a, D-48149 Münster, Germany.
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Abstract
The persistence and stability of selective deficits in interhemispheric processing resulting from known callosal pathology have been monitored over periods ranging from ten to thirty five years. The present study included five patients: two with complete agenesis of the corpus callosum, one with partial dysgenesis, and two with a partial section of the corpus callosum. A crossed-uncrossed difference task and four bilateral visual matching tasks were administered to these patients and to groups of normal individuals matched on age and intelligence. As expected, all of the patients showed deficits in speed or accuracy relative to the performance of their control groups. The profile of performance for each patient across the five tasks demonstrated a systematic (but not perfectly consistent) relationship with the location and extent of callosal pathology.
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Ludwig T, Fisher P, Murty V, Efstratiadis A. Development of mammary adenocarcinomas by tissue-specific knockout of Brca2 in mice. Oncogene 2001; 20:3937-48. [PMID: 11494122 DOI: 10.1038/sj.onc.1204512] [Citation(s) in RCA: 78] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2000] [Revised: 03/21/2001] [Accepted: 04/04/2001] [Indexed: 11/09/2022]
Abstract
Cre-mediated deletion of exons 3 and 4 of the mouse Brca2 gene occurring specifically in mammary epithelial cells of conditional female mutants carrying a combination of loxP-modified and null Brca2 alleles resulted in a high incidence (77%) of breast tumors that were often palpable and developed in one or more glands after long latency (time for median tumor-free survival of approximately 1.4 years; total of 40 tumors in 20 animals). These invasive adenocarcinomas were histologically quite uniform, exhibiting predominantly a solid, nodular tumor pattern with very few variants, in striking contrast to the morphological heterogeneity of analogous Brca1-associated tumors. The karyotypes of tumor cells lacking Brca2 had various chromosomal aberrations and ranged from diploid to hypertetraploid, but this wide variability was incongruous with the histological appearance of carcinomas that was comparable between specimens. The implications of these observations in the context of models positing that Brca2 is involved in the maintenance of genomic stability are discussed.
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Affiliation(s)
- T Ludwig
- Department of Anatomy and Cell Biology, Columbia University, New York, NY 10032, USA.
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36
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Abstract
We generated mouse mutants carrying in the Brca1 locus a modification (Brca1(tr)) that eliminates the C-terminal half of the protein product and obtained results indicating that, depending on genetic background, the missing BRCT and/or other domains are dispensable for survival, but essential for tumor suppression. Most of the apparently hypomorphic Brca1(tr/tr) mutants developed various tumors. Lymphomas were detected at all ages, whereas sarcomas and carcinomas, including breast cancer, appeared after a long latency. The mammary tumors showed striking variability in histopathological patterns suggesting stochastic engagement of tumorigenic pathways in their progression, to which the Brca1(tr/tr) mutation was apparently a late participant.
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MESH Headings
- Animals
- BRCA1 Protein/genetics
- BRCA1 Protein/metabolism
- Blotting, Northern
- Female
- Lymphoma/genetics
- Lymphoma/metabolism
- Lymphoma/pathology
- Male
- Mammary Neoplasms, Experimental/genetics
- Mammary Neoplasms, Experimental/metabolism
- Mammary Neoplasms, Experimental/pathology
- Mice
- Mice, Inbred BALB C
- Mice, Mutant Strains
- Mutagenesis
- Neoplasms, Experimental/genetics
- Neoplasms, Experimental/metabolism
- Neoplasms, Experimental/pathology
- Reverse Transcriptase Polymerase Chain Reaction
- Sarcoma, Experimental/genetics
- Sarcoma, Experimental/metabolism
- Sarcoma, Experimental/pathology
- Sequence Deletion
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Affiliation(s)
- T Ludwig
- Department of Anatomy and Cell Biology, Columbia University, New York, New York 10032, USA.
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37
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Abstract
We describe an electrophysiological method for evaluating the intrinsic invasive potency of tumour cells using renal cells as an in vitro assay system. A high-resistance clone of Madin-Darby canine kidney cells (MDCK-C7) was grown to confluency in a filter cup. Transepithelial electrical resistance across the MDCK-C7 monolayer was measured in a commercially available electrode chamber. After a transepithelial electrical resistance of about 4,000 omega cm2 had been reached, human melanoma or pancreatic carcinoma cells were co-cultivated with the MDCK-C7 monolayer. Both carcinoma cell lines induced resistance breakdown measured after 24 h or later depending on seeding density and cell type. Seeding carcinoma cells on the basolateral surface of MDCK-C7 cells caused a similar decrease in transepithelial resistance of the MDCK-C7 monolayer. Resistance breakdown indicates opening of tight junctions prior to tumour cell invasion. In conclusion, the high-resistance MDCK-C7 cell clone could serve as a valuable biological assay system to determine electrically the metastatic potency of tumour cells in vitro.
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Affiliation(s)
- J Zak
- Department of Physiology, University of Münster, Germany
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38
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Ludwig T, Schwass D, Seitz G, Siekmann H. Intakes of thorium while using thoriated tungsten electrodes for TIG welding. Health Phys 1999; 77:462-469. [PMID: 10492354 DOI: 10.1097/00004032-199910000-00015] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Thoriated electrodes are used in TIG welding. TIG welders, along with persons who grind thoriated electrodes and persons located near relevant welding and grinding sites, might be at risk of thorium intake. The isotopes of radiological relevance are 232Th, 230Th, and 228Th. The studies described in the literature do not provide a consistent picture of the actual hazards, and changes in European and German radiological protection laws have now made it necessary to determine the risks. To accomplish this, a field test was conducted under real working conditions in 26 different welding shops. The airborne activity generated through welding, and through grinding of electrodes, was measured using personal air samplers. Stationary samplers were also used. The filters' samples were evaluated by means of direct alpha spectrometry with proportional counting and by means of gamma spectrometry following neutron activation. The results clearly showed that considerable intake can occur during both alternating-current welding and electrode grinding, if no suction systems are used. The range of 232Th intakes to welders were estimated from 0.1 Bq y(-1) to 144 Bq y(-1) during welding and from 0.02 Bq y(-1) to 30.2 Bq y(-1) during grinding. In 6 of the 26 cases the recent annual limit on intake derived from the most recent ICRP publications was exceeded--in the worst case it was exceeded by a factor of 10--if it is assumed that the persons studied were not exposed workers (not routinely monitored for radiation exposure). When the significantly more restrictive German limits are applied, the amounts by which the limits were exceeded were even greater. Because many qualified welders have very long careers, the risks can thus be considerable. The paper also discusses parameters that influence exposure, and it presents a catalogue of recommended measures for dosage reduction.
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Affiliation(s)
- T Ludwig
- Institut für Strahlenschutz der Berufsgenossenschaften der Feinmechanik und Elektrotechnik und der Chemischen Industrie, Köln, Germany.
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Munz F, Cunningham V, May M, Ziegler S, Nekolla S, Schwaiger M, Ludwig T, Bode A, Bartenstein P. Parallel Spectral Analysis. Neuroimage 1998. [DOI: 10.1016/s1053-8119(18)31898-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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40
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Sohar I, Sleat D, Gong Liu C, Ludwig T, Lobel P. Mouse mutants lacking the cation-independent mannose 6-phosphate/insulin-like growth factor II receptor are impaired in lysosomal enzyme transport: comparison of cation-independent and cation-dependent mannose 6-phosphate receptor-deficient mice. Biochem J 1998; 330 ( Pt 2):903-8. [PMID: 9480908 PMCID: PMC1219223 DOI: 10.1042/bj3300903] [Citation(s) in RCA: 48] [Impact Index Per Article: 1.8] [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: 02/06/2023]
Abstract
Two proteins have been implicated in the mannose 6-phosphate-dependent transport of lysosomal enzymes to lysosomes: the 300kDa cation-independent and the 46kDa cation-dependent mannose 6-phosphate receptors (CI- and CD-MPRs). The mammalian CI-MPR also mediates endocytosis and clearance of insulin-like growth factor II (IGF-II). Mutant mice that lack the CD-MPR are viable, mice that lack the CI-MPR accumulate high levels of IGF-II and usually die perinatally, whereas mice that lack both IGF-II and CI-MPR are viable. To investigate the relative roles of the MPRs in the targeting of lysosomal enzymes in vivo, we analysed the effect of a deficiency of either MPR on lysosomal enzyme activities in animals lacking IGF-II. In CD-MPR-deficient mice, most activities were relatively normal in solid tissues and some were marginally elevated in serum. In CI-MPR-deficient mice, some enzyme activities were moderately decreased in solid tissues and multiple enzymes were markedly elevated in serum. Finally, total levels of serum mannose 6-phosphorylated glycoproteins were approximately 45-fold and approximately 15-fold higher than wild type in CI- and CD-MPR-deficient mice respectively, and there were specific differences in the pattern of these proteins when comparing CI- and CD-MPR deficient animals. These results indicate that while lack of the CI-MPR appears to perturb lysosome function to a greater degree than lack of the CD-MPR, each MPR has distinct functions for the targeting of lysosomal enzymes in vivo.
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Affiliation(s)
- I Sohar
- Center for Advanced Biotechnology and Medicine and Department of Pharmacology, UMDNJ-Robert Wood Johnson Medical School, 679 Hoes Lane, Piscataway, NJ 08854, USA
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Eggenschwiler J, Ludwig T, Fisher P, Leighton PA, Tilghman SM, Efstratiadis A. Mouse mutant embryos overexpressing IGF-II exhibit phenotypic features of the Beckwith-Wiedemann and Simpson-Golabi-Behmel syndromes. Genes Dev 1997; 11:3128-42. [PMID: 9389646 PMCID: PMC316748 DOI: 10.1101/gad.11.23.3128] [Citation(s) in RCA: 230] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/1997] [Accepted: 10/06/1997] [Indexed: 02/05/2023]
Abstract
In mice, the imprinted Igf2 gene (expressed from the paternal allele), which encodes a growth-promoting factor (IGF-II), is linked closely to the reciprocally imprinted H19 locus on chromosome 7. Also imprinted (expressed from the maternal allele) is the Igf2r gene on chromsome 17 encoding the type 2 IGF receptor that is involved in degradation of excess IGF-II. Double mutant embryos carrying a deletion around the H19 region and also a targeted Igf2r allele, both inherited maternally, have extremely high levels of IGF-II (7- and 11-fold higher than normal in tissues and serum, respectively) as a result of biallelic Igf2 expression (imprint relaxation by deletion of H19-associated sequence) in combination with lack of the IGF2R-mediated IGF-II turnover. This excess of IGF-II causes somatic overgrowth, visceromegaly, placentomegaly, omphalocele, and cardiac and adrenal defects, which are also features of the Beckwith-Wiedemann syndrome (BWS), a genetically complex human disorder associated with chromosomal abnormalities in the 11p15.5 region where the IGF2 gene resides. In addition, the double mutant mouse embryos exhibit skeletal defects and cleft palate, which are manifestations observed frequently in the Simpson-Golabi-Behmel syndrome, another overgrowth disorder overlapping phenotypically, but not genetically, with BWS.
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MESH Headings
- Abnormalities, Multiple/etiology
- Abnormalities, Multiple/genetics
- Abnormalities, Multiple/metabolism
- Adrenal Cortex/abnormalities
- Adrenal Cortex/embryology
- Animals
- Beckwith-Wiedemann Syndrome/etiology
- Beckwith-Wiedemann Syndrome/genetics
- Beckwith-Wiedemann Syndrome/metabolism
- Bone and Bones/abnormalities
- Bone and Bones/embryology
- Cleft Palate/embryology
- Crosses, Genetic
- Cyclin-Dependent Kinase Inhibitor p57
- Disease Models, Animal
- Eye Abnormalities/embryology
- Female
- Fetal Death
- Fetus/abnormalities
- Gene Expression Regulation, Developmental
- Heart Defects, Congenital
- Hernia, Umbilical/embryology
- Humans
- Insulin-Like Growth Factor II/biosynthesis
- Insulin-Like Growth Factor II/genetics
- Insulin-Like Growth Factor II/physiology
- Male
- Mice
- Mice, Mutant Strains
- Nuclear Proteins/genetics
- Phenotype
- Receptor, IGF Type 2/genetics
- Receptor, IGF Type 2/metabolism
- Sequence Deletion
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Affiliation(s)
- J Eggenschwiler
- Department of Genetics and Development, Columbia University, New York, New York 10032, USA
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Ludwig T, Chapman DL, Papaioannou VE, Efstratiadis A. Targeted mutations of breast cancer susceptibility gene homologs in mice: lethal phenotypes of Brca1, Brca2, Brca1/Brca2, Brca1/p53, and Brca2/p53 nullizygous embryos. Genes Dev 1997; 11:1226-41. [PMID: 9171368 DOI: 10.1101/gad.11.10.1226] [Citation(s) in RCA: 401] [Impact Index Per Article: 14.9] [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: 02/04/2023]
Abstract
Mutations of the human BRCA1 and BRCA2 genes encoding tumor suppressors have been implicated in inherited predisposition to breast and other cancers. Disruption of the homologous mouse genes Brca1 and Brca2 by targeting showed that they both have indispensable roles during embryogenesis, because nullizygous embryos become developmentally retarded and disorganized, and die early in development. In Brca1 mutants, the onset of abnormalities is earlier by one day and their phenotypic features and time of death are highly variable, whereas the phenotype of Brca2 null embryos is more uniform, and they all survive for at least 8.5 embryonic days. Observations with Brca1/Brca2 double nullizygotes raise the possibility that the two developmental pathways could be linked. Interestingly, the impact of the Brca1 or Brca2 null mutation is less severe in a p53 null background.
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Affiliation(s)
- T Ludwig
- Department of Anatomy and Cell Biology, Columbia University, New York, New York 10032, USA
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Kuliawat R, Klumperman J, Ludwig T, Arvan P. Differential sorting of lysosomal enzymes out of the regulated secretory pathway in pancreatic beta-cells. J Cell Biol 1997; 137:595-608. [PMID: 9151667 PMCID: PMC2139876 DOI: 10.1083/jcb.137.3.595] [Citation(s) in RCA: 143] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/1996] [Revised: 02/14/1997] [Indexed: 02/04/2023] Open
Abstract
In cells specialized for secretory granule exocytosis, lysosomal hydrolases may enter the regulated secretory pathway. Using mouse pancreatic islets and the INS-1 beta-cell line as models, we have compared the itineraries of procathepsins L and B, two closely related members of the papain superfamily known to exhibit low and high affinity for mannose-6-phosphate receptors (MPRs), respectively. Interestingly, shortly after pulse labeling INS cells, a substantial fraction of both proenzymes exhibit regulated exocytosis. After several hours, much procathepsin L remains as precursor in a compartment that persists in its ability to undergo regulated exocytosis in parallel with insulin, while procathepsin B is efficiently converted to the mature form and can no longer be secreted. However, in islets from transgenic mice devoid of cation-dependent MPRs, the modest fraction of procathepsin B normally remaining within mature secretory granules is increased approximately fourfold. In normal mouse islets, immunoelectron microscopy established that both cathepsins are present in immature beta-granules, while immunolabeling for cathepsin L, but not B, persists in mature beta-granules. By contrast, in islets from normal male Sprague-Dawley rats, much of the proenzyme sorting appears to occur earlier, significantly diminishing the stimulus-dependent release of procathepsin B. Evidently, in the context of different systems, MPR-mediated sorting of lysosomal proenzymes occurs to a variable extent within the trans-Golgi network and is continued, as needed, within immature secretory granules. Lysosomal proenzymes that fail to be sorted at both sites remain as residents of mature secretory granules.
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Affiliation(s)
- R Kuliawat
- Diabetes Research Center and Division of Endocrinology, Albert Einstein College of Medicine, Bronx, New York 10461, USA
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Ludwig T, Eggenschwiler J, Fisher P, D'Ercole AJ, Davenport ML, Efstratiadis A. Mouse mutants lacking the type 2 IGF receptor (IGF2R) are rescued from perinatal lethality in Igf2 and Igf1r null backgrounds. Dev Biol 1996; 177:517-35. [PMID: 8806828 DOI: 10.1006/dbio.1996.0182] [Citation(s) in RCA: 316] [Impact Index Per Article: 11.3] [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: 02/02/2023]
Abstract
The cation-dependent and cation-independent mannose 6-phosphate receptors (CD- and CI-MPRs) bind the phosphomannosyl recognition marker of lysosomal hydrolases, but in mammals the latter also interacts with insulin-like growth factor II (IGF-II). While IGF signaling is mediated by the type 1 IGF receptor (IGF1R), the type 2 receptor (IGF2R/CI-MPR) serves IGF-II turnover. Mouse mutants inheriting maternally a targeted disruption of the imprinted Igf2r gene, which is normally expressed only from the maternal allele, have increased serum and tissue levels of IGF-II and exhibit overgrowth (135% of normal birthweight) and generalized organomegaly, kinky tail, postaxial polydactyly, heart abnormalities, and edema. These mutants usually die perinatally, but a small minority can survive depending on genetic background and can occasionally reproduce, except for some females characterized by an imperforate vagina and hydrometrocolpos. Consistent with the hypothesis that lethality in the absence of IGF2R-mediated turnover is caused by excess of IGF-II overstimulating IGF1R, Igf2r mutants are completely rescued when they carry a second mutation eliminating either IGF-II or IGF1R. Normal embryonic development of the Igf1r/Igf2r double mutants, which differ from wild-type siblings only in the pattern of postnatal growth, appears to occur by signaling of IGF-II, being in excess, through a genetically identified unknown receptor, since triple mutants lacking IGF1R, IGF2R, and IGF-II are nonviable dwarfs (30% of normal size). In contrast with the Igf2r/Igf2 double mutants, mice lacking IGF2R/CI-MPR and CD-MPR survive in an IGF-II null background at a very low frequency and only for a few postnatal weeks, indicating that the mannose 6-phosphate-mediated lysosomal enzyme trafficking is essential for viability.
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MESH Headings
- Animals
- Animals, Newborn/genetics
- Breeding/methods
- Genes, Lethal/genetics
- Heart Defects, Congenital/genetics
- Heart Defects, Congenital/pathology
- Mannosephosphates/genetics
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Mice, Mutant Strains/genetics
- Mice, Mutant Strains/growth & development
- Mutation
- Phenotype
- Receptor, IGF Type 2/deficiency
- Receptor, IGF Type 2/genetics
- Receptors, Somatomedin/deficiency
- Receptors, Somatomedin/genetics
- Reproduction/genetics
- Survival Rate
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Affiliation(s)
- T Ludwig
- Department of Genetics and Development, Columbia University, New York, New York 10032, USA
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Brunetti CR, Burke RL, Hoflack B, Ludwig T, Dingwell KS, Johnson DC. Role of mannose-6-phosphate receptors in herpes simplex virus entry into cells and cell-to-cell transmission. J Virol 1995; 69:3517-28. [PMID: 7745699 PMCID: PMC189065 DOI: 10.1128/jvi.69.6.3517-3528.1995] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.0] [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: 01/26/2023] Open
Abstract
Herpes simplex virus (HSV) glycoprotein D (gD) is essential for virus entry into cells, is modified with mannose-6-phosphate (M-6-P), and binds to both the 275-kDa M-6-P receptor (MPR) and the 46-kDa MPR (C. R. Brunetti, R. L. Burke, S. Kornfeld, W. Gregory, K. S. Dingwell, F. Masiarz, and D. C. Johnson, J. Biol. Chem. 269:17067-17074, 1994). Since MPRs are found on the surfaces of mammalian cells, we tested the hypothesis that MPRs could serve as receptors for HSV during virus entry into cells. A soluble form of the 275-kDa MPR, derived from fetal bovine serum, inhibited HSV plaques on monkey Vero cells, as did polyclonal rabbit anti-MPR antibodies. In addition, the number and size of HSV plaques were reduced when cells were treated with bovine serum albumin conjugated with pentamannose-phosphate (PM-PO4-BSA), a bulky ligand which can serve as a high-affinity ligand for MPRs. These data imply that HSV can use MPRs to enter cells; however, other molecules must also serve as receptors for HSV because a reasonable fraction of virus could enter cells treated with even the highest concentrations of these inhibitors. Consistent with the possibility that there are other receptors, HSV produced the same number of plaques on MPR-deficient mouse fibroblasts as were produced on normal mouse fibroblasts, but there was no inhibition with PM-PO4-BSA with either of these embryonic mouse cells. Together, these results demonstrate that HSV does not rely solely on MPRs to enter cells, although MPRs apparently play some role in virus entry into some cell types and, perhaps, act as one of a number of cell surface molecules that can facilitate entry. We also found that HSV produced small plaques on human fibroblasts derived from patients with pseudo-Hurler's polydystrophy, cells in which glycoproteins are not modified with M-6-P residues and yet production of infectious HSV particles was not altered in the pseudo-Hurler cells. In addition, HSV plaque size was reduced by PM-PO4-BSA; therefore, it appears that M-6-P residues and MPRs are required for efficient transmission of HSV between cells, a process which differs in some respects from entry of exogenous virus particles.
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Affiliation(s)
- C R Brunetti
- Department of Pathology, McMaster University, Hamilton, Ontario, Canada
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Abstract
We isolated the mas proto-oncogene from a mouse genomic library. Sequence analysis showed that it contains an open reading frame without intervening sequences. The amino acid sequence deduced confirms the seven-transmembrane-domain structure and exhibits 97% and 91% amino acid homology with the rat and the human Mas, respectively. In mice and rats, mas mRNA was detected in the testis, kidney, heart, and in the brain regions: hippocampus, forebrain, piriform cortex, and olfactory bulb. Testicular mas mRNA from rats increases markedly during development, while cerebellar mRNA is high postnatally but completely disappears at later stages. We conclude that the product of the mouse mas gene may be involved in the development of the brain and testis.
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Affiliation(s)
- R Metzger
- German Institute for High Blood Pressure Research, Heidelberg
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Ludwig T, Hüppe T, Kunath U, Friedrich M. [Secondary polytopic parathyroid adenomas. Hyperparathyroidism recurrence after the dissemination of parathyroid tissue in the surgical field]. ROFO-FORTSCHR RONTG 1995; 162:78-80. [PMID: 7841408 DOI: 10.1055/s-2007-1015839] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- T Ludwig
- Abteilung für Radiologie und Nuklearmedizin, Krankenhaus Am Urban, Berlin
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Ludwig T, Munier-Lehmann H, Bauer U, Hollinshead M, Ovitt C, Lobel P, Hoflack B. Differential sorting of lysosomal enzymes in mannose 6-phosphate receptor-deficient fibroblasts. EMBO J 1994; 13:3430-7. [PMID: 8062819 PMCID: PMC395245 DOI: 10.1002/j.1460-2075.1994.tb06648.x] [Citation(s) in RCA: 105] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
In higher eukaryotes, the transport of soluble lysosomal enzymes involves the recognition of their mannose 6-phosphate signal by two receptors: the cation-independent mannose 6-phosphate/insulin-like growth factor II receptor (CI-MPR) and the cation-dependent mannose 6-phosphate receptor (CD-MPR). It is not known why these two different proteins are present in most cell types. To investigate their relative function in lysosomal enzyme targeting, we created cell lines that lack either or both MPRs. This was accomplished by mating CD-MPR-deficient mice with Thp mice that carry a CI-MPR deleted allele. Fibroblasts prepared from embryos that lack the two receptors exhibit a massive missorting of multiple lysosomal enzymes and accumulate undigested material in their endocytic compartments. Fibroblasts that lack the CI-MPR, like those lacking the CD-MPR, exhibit a milder phenotype and are only partially impaired in sorting. This demonstrates that both receptors are required for efficient intracellular targeting of lysosomal enzymes. More importantly, comparison of the phosphorylated proteins secreted by the different cell types indicates that the two receptors may interact in vivo with different subgroups of hydrolases. This observation may provide a rational explanation for the existence of two distinct mannose 6-phosphate binding proteins in mammalian cells.
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Affiliation(s)
- T Ludwig
- European Molecular Biology Laboratory, Heidelberg, Germany
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Ludwig T, Tenscher K, Remmler J, Hoflack B, Lobel P. Cloning and sequencing of cDNAs encoding the full-length mouse mannose 6-phosphate/insulin-like growth factor II receptor. Gene 1994; 142:311-2. [PMID: 8194771 DOI: 10.1016/0378-1119(94)90282-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Overlapping clones encoding the complete coding sequence of the mouse mannose 6-phosphate/insulin-like growth factor II receptor have been isolated from a liver cDNA library and the nucleotide sequence has been determined. The open reading frame encodes a protein of 2482 amino acids that is 89 and 87% identical to the human and bovine receptors, respectively.
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Affiliation(s)
- T Ludwig
- European Molecular Biology Laboratory, Cell Biology Programme, Heidelberg, Germany
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Ludwig T, Ovitt CE, Bauer U, Hollinshead M, Remmler J, Lobel P, Rüther U, Hoflack B. Targeted disruption of the mouse cation-dependent mannose 6-phosphate receptor results in partial missorting of multiple lysosomal enzymes. EMBO J 1993; 12:5225-35. [PMID: 8262065 PMCID: PMC413788 DOI: 10.1002/j.1460-2075.1993.tb06218.x] [Citation(s) in RCA: 58] [Impact Index Per Article: 1.9] [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: 11/08/2022] Open
Abstract
In mammalian cells two mannose 6-phosphate receptors (MPRs) are involved in lysosomal enzyme transport. To understand the precise function of the cation-dependent mannose 6-phosphate receptor (CD-MPR), one allele of the corresponding gene has been disrupted in mouse embryonic stem cells and homozygous mice lacking this receptor have been generated. The homozygous mice appear normal, suggesting that other targeting mechanisms can partially compensate for the loss of the CD-MPR in vivo. However, homozygous receptor-deficient cells and animals clearly exhibit defects in targeting of multiple lysosomal enzymes when compared with wild-types. Increased levels of phosphorylated lysosomal enzymes were present in body fluids of homozygous animals. In thymocytes from homozygous mice or in primary cultures of fibroblasts from homozygous embryos, there is a marked increase in the amount of phosphorylated lysosomal enzymes that are secreted into the extracellular medium. The cultured fibroblasts have decreased intracellular levels of multiple lysosomal enzymes and accumulate macromolecules within their endosomal/lysosomal system. Taken together, these results clearly indicate that the CD-MPR is required for efficient intracellular targeting of multiple lysosomal enzymes.
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Affiliation(s)
- T Ludwig
- European Molecular Biology Laboratory, Postfach, Heidelberg, Germany
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