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Diefenbach MA, Marziliano A, Siembida EJ, Mistretta T, Pfister H, Yacoub A, Aibel K, Patel P, Lapitan E, Tagai EK, Smaldone M, Miller SM. Cancer Resource and Information Support (CRIS) for Bladder Cancer Survivors and Their Caregivers: Development and Usability Testing Study. JMIR Form Res 2023; 7:e41876. [PMID: 37347533 DOI: 10.2196/41876] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 03/14/2023] [Accepted: 04/03/2023] [Indexed: 06/23/2023] Open
Abstract
BACKGROUND Bladder cancer survivors and their caregivers face profound practical (eg, use of stoma appliances and care for urinary diversion methods) and psychosocial (eg, depression and anxiety) challenges after surgical treatment with cystectomy. OBJECTIVE To improve the health-related quality of life and postsurgical outcomes of both bladder cancer survivors and their caregivers, the team, in collaboration with Sourcetop, Inc (software design) and Dappersmith (graphic design), developed the Cancer Resource and Information Support (CRIS) software. The purpose of this manuscript is to report on the development and usability testing of the CRIS software. METHODS The development of the CRIS software was guided by the Obesity-Related Behavioral Intervention Trials (ORBIT) model for developing behavioral treatments for chronic diseases. The ORBIT model is unique in that it proposes a flexible and progressive process with prespecific clinically significant milestones for forward movement and returns to earlier stages for refinement, and it facilitates communication among diverse groups by using terminology from the drug development model. This paper focuses on 2 phases of the ORBIT model: phase IA: define and IB: refine. During phase IA, the study team developed solutions for the stated clinical problem-adjustment to life post cystectomy-by reviewing the literature and collecting feedback from clinicians, professional organizations, bladder cancer survivors, and their caregivers. During Phase IB, the study team focused on tailoring content in the CRIS software to the user as well as usability testing with 7 participants. RESULTS The finished product is CRIS, a web-based software for survivors of bladder cancer and their caregivers to serve as a health management and lifestyle resource after surgery. Overarching themes from phase IA (participant feedback) included how to use new medical equipment, tips and tricks for easier living with new medical equipment, questions about health maintenance, and questions about lifestyle modifications. To accommodate our target population, we also incorporated recommendations from the Americans with Disabilities Act for website design, such as large text size, large paragraph spacing, highly contrasting text and background colors, use of headings and labels to describe the purpose of the content, portrait orientation without the need for horizontal scrolling, multiple ways to access a web page within a set of pages, ability to navigate web pages in sequential order, and in-text links that are descriptive. Usability participants evaluated CRIS very positively, indicating that it was easy to use, the functions were well-integrated, and if available, they would use CRIS frequently. CONCLUSIONS CRIS, developed over the course of 18 months by integrating feedback from experts, literature reviews, and usability testing, is the first web-based software developed for bladder cancer survivors and their caregivers to help them adjust to life following cystectomy. The efficacy of CRIS in improving patients' and caregivers' quality of life is currently being evaluated in a randomized controlled trial.
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Affiliation(s)
- Michael A Diefenbach
- Institute of Health System Science, Feinstein Institutes for Medical Research, Northwell Health, New York, NY, United States
| | - Allison Marziliano
- Institute of Health System Science, Feinstein Institutes for Medical Research, Northwell Health, New York, NY, United States
| | - Elizabeth J Siembida
- Institute of Health System Science, Feinstein Institutes for Medical Research, Northwell Health, New York, NY, United States
| | - Thomas Mistretta
- Institute of Health System Science, Feinstein Institutes for Medical Research, Northwell Health, New York, NY, United States
| | - Halie Pfister
- Institute of Health System Science, Feinstein Institutes for Medical Research, Northwell Health, New York, NY, United States
| | - Andrea Yacoub
- Institute of Health System Science, Feinstein Institutes for Medical Research, Northwell Health, New York, NY, United States
| | - Kelli Aibel
- Institute of Health System Science, Feinstein Institutes for Medical Research, Northwell Health, New York, NY, United States
| | - Priya Patel
- Institute of Health System Science, Feinstein Institutes for Medical Research, Northwell Health, New York, NY, United States
| | - Emmanuel Lapitan
- Cancer Prevention and Control, Fox Chase Cancer Center, Temple University Health System, Philadelphia, PA, United States
| | - Erin K Tagai
- Cancer Prevention and Control, Fox Chase Cancer Center, Temple University Health System, Philadelphia, PA, United States
| | - Marc Smaldone
- Surgical Oncology, Fox Chase Cancer Center, Temple University Health System, Philadelphia, PA, United States
| | - Suzanne M Miller
- Cancer Prevention and Control, Fox Chase Cancer Center, Temple University Health System, Philadelphia, PA, United States
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Yacoub A, Ayadi A, Ayed W, Ayari S, Chebbi S, Magroun I, Ben Afia L, Mersni M, Mechergui N, Brahim D, Ben Said H, Bahri G, Youssef I, Ladhari N, Mziou N, Grassa A, M'rad M, Khessairi N, Krir A, Chihaoui M, Mahjoub S, Bahlous A, Jridi M, Cherif Y, Derbal S, Chebbi D, Hentati O, Ben Dahmen F, Abdallah M, Hamdi I, Sahli F, Ouerdani Y, Mnekbi Y, Abaza H, Ajmi M, Guedria A, Randaline A, Ben Abid H, Gaddour N, Maatouk A, Zemni I, Gara A, Kacem M, Maatouk I, Ben Fredj M, Abroug H, Ben Nasrallah C, Dhouib W, Bouanene I, Sriha A, Mahmoudi M, Gharbi G, Khsiba A, Azouz M, Ben Mohamed A, Yakoubi M, Medhioub M, Hamzaoui L, Azouz M, Ben Attig Y, Hamdi S, Essid R, Ben Jemia E, Rezgui B, Boudaya MS, Hassine H, Dabbabi H, Fradi Y, Cherif D, Lassoued I, Yacoub H, Kchir H, Maamouri N, Khairi W, Ben Ammar H, Abaza H, Chelbi E, Merhaben S, Neffati W, Ajmi M, Tarchalla S, Boughzala S, Gazzeh M, Gara S, Labidi A, Touati H, Nefzi AM, Ben Mustpha N, Fekih M, Serghini M, Boubaker J, Zouiten L, Driss A, Meddeb N, Driss I, Walha S, Ben Said H, Bel Hadj Mabrouk E, Zaimi Y, Mensi A, Trad N, Ayadi S, Said Y, Mouelhi L, Dabbèche R, Belfkih H, Bani M, Moussa A, Souissi S, Trabelsi Werchfeni B, Chelly S, Ezzi O, Ammar A, Besbes M, Njah M, Mahjoub M, Ghali H, Neffati A, Bhiri S, Bannour R, Ayadi S, Khouya FE, Kamel A, Hariz E, Aidani S, Kefacha S, Ben Cheikh A, Said H, Dogui S, Atig A, Gara A, Ezzar S, Ben Fradj M, Bouanène I, M'kadmi H, Farhati M, Dakhli N, Nalouti K, Chanoufi MB, Abouda SH, Louati C, Zaaimi Y, Dabbeche R, Hermi A, Saadi A, Mokaddem S, Boussaffa H, Bellali M, Zaghbib S, Ayed H, Bouzouita A, Derouiche A, Allouche M, Chakroun M, Ben Slama R, Gannoun N, Kacem I, Tlili G, Kahloul M, Belhadj Chabbah N, Douma F, Bouhoula M, Chouchene A, Aloui A, Maoua M, Brahem A, Kalboussi H, El Maalel O, Chatti S, Jaidane M, Naija W, Mrizek N, Sellami I, Feki A, Hrairi A, Kotti N, Baklouti S, Jmal Hammami K, Masmoudi ML, Hajjaji M, Naaroura A, Ben Amar J, Ouertani H, Ben Moussa O, Zaibi H, Aouina H, Ben Jemaa S, Gassara Z, Ezzeddine M, Kallel MH, Fourati H, Akrout R, Kallel H, Ayari M, Chehaider A, Souli F, Abdelaali I, Ziedi H, Boughzala C, Haouari W, Chelli M, Soltani M, Trabelsi H, Sahli H, Hamdaoui R, Masmoudi Y, Halouani A, Triki A, Ben Amor A, Makni C, Eloillaf M, Riahi S, Tlili R, Jmal L, Belhaj Ammar L, Nsibi S, Jmal A, Boukhzar R, Somai M, Daoud F, Rachdi I, Ben Dhaou B, Aydi Z, Boussema F, Frikha H, Hammami R, Ben Cheikh S, Chourabi S, Bokri E, Elloumi D, Hasni N, Hamza S, Berriche O, Dalhoum M, Jamoussi H, Kallel L, Mtira A, Sghaier Z, Ghezal MA, Fitouri S, Rhimi S, Omri N, Rouiss S, Soua A, Ben Slimene D, Mjendel I, Ferchichi I, Zmerli R, Belhadj Mabrouk E, Debbeche R, Makhloufi M, Chouchane A, Sridi C, Chelly F, Gaddour A, Kacem I, Chatti S, Mrizak N, Elloumi H, Debbabi H, Ben Azouz S, Marouani R, Cheikh I, Ben Said M, Kallel M, Amdouni A, Rejaibi N, Aouadi L, Zaouche K, Khouya FE, Aidani S, Khefacha S, Jelleli N, Sakly A, Zakhama W, Binous MY, Ben Said H, Bouallegue E, Jemmali S, Abcha S, Wahab H, Hmida A, Mabrouk I, Mabrouk M, Elleuch M, Mrad M, Ben Safta N, Medhioub A, Ghanem M, Boughoula K, Ben Slimane B, Ben Abdallah H, Bouali R, Bizid S, Abdelli MN, Ben Nejma Y, Bellakhal S, Antit S, Bourguiba R, Zakhama L, Douggui MH, Bahloul E, Dhouib F, Turki H, Sabbah M, Baghdadi S, Trad D, Bellil N, Bibani N, Elloumi H, Gargouri D, Ben Said M, Hamdaoui R, Chokri R, Kacem M, Ben Rejeb M, Miladi A, Kooli J, Touati S, Trabelsi S, Klila M, Rejeb H, Kammoun H, Akrout I, Greb D, Ben Abdelghaffar H, Hassene H, Fekih L, Smadhi H, Megdiche MA, Ksouri J, Kasdalli H, Hayder A, Gattoussi M, Chérif L, Ben Saida F, Gueldich M, Ben Jemaa H, Dammak A, Frikha I, Saidani A, Ben Amar J, Aissi W, Chatti AB, Naceur I, Ben Achour T, Said F, Khanfir M, Lamloum M, Ben Ghorbel I, Houman M, Cherif T, Ben Mansour A, Daghfous H, Slim A, Ben Saad S, Tritar F, Naffeti W, Abdellatif J, Ben Fredj M, Selmi M, Kbir GH, Maatouk M, Jedidi L, Taamallah F, Ben Moussa M, Halouani L, Rejeb S, Khalffalah N, Ben Ammar J, Hedhli S, Azouz MM, Chatti S, Athimni Z, Bouhoula M, Elmaalel O, Mrizak N, Maalej M, Kammoun R, Gargouri F, Sallemi S, Haddar A, Masmoudi K, Oussaifi A, Sahli A, Bhouri M, Hmaissi R, Friha M, Cherif H, Baya C, Triki M, Yangui F, Charfi MR, Ben Hamida HY, Karoui S, Aouini F, Hajlaoui A, Jlassi H, Sabbah M, Fendri MN, Kammoun N, Fehri S, Nouagui H, Harzalli A, Snène H, Belakhal S, Ben Hassine L, Labbene I, Jouini M, Kalboussi S, Ayedi Y, Harizi C, Skhiri A, Fakhfakh R, Jelleli B, Belkahla A, Fejjeri M, Zeddini M, Mahjoub S, Nouira M, Frih N, Debiche S, Blibech H, Belhaj S, Mehiri N, Ben Salah N, Louzir B, Kooli J, Bahri R, Chaka A, Abdenneji S, Majdoub Fehri S, Hammadi J, Dorgham D, Hriz N, Kwas H, Issaoui N, Jaafoura S, Bellali H, Shimi M, Belhaj Mabrouk E, Sellami R, Ketata I, Medi W, Mahjoub M, Ben Yacoub S, Ben Chaabene A, Touil E, Ben Ayed H, Ben Miled S, El Zine E, Khouni H, Ben Kadhi S, Maatoug J, Boulma R, Rezgui R, Boudokhane M, Jomni T, Chamekh S, Aissa S, Touhiri E, Jlaiel N, Oueslati B, Maaroufi N, Aouadi S, Belkhir S, Daghfous H, Merhaben S, Dhaouadi N, Ounaes Y, Chaker K, Yaich S, Marrak M, Bibi M, Mrad Dali K, Sellami A, Nouira Y, Sellami S, Anane I, Trabelsi H, Ennaifer R, Benzarti Z, Bouchabou B, Hemdani N, Nakhli A, Cherif Y, Abdelkef M, Derbel K, Barkous B, Yahiaoui A, Sayhi A, Guezguez F, Rouatbi S, Racil H, Ksouri C, Znegui T, Maazaoui S, Touil A, Habibech S, Chaouech N, Ben Hmid O, Ismail S, Chouaieb H, Chatti M, Guediri N, Belhadj Mohamed M, Bennasrallah C, Bouzid Y, Zaouali F, Toumia M, El Khemiri N, El Khemiri A, Sfar H, Farhati S, Ben Chehida F, Yamoun R, Braham N, Hamdi Y, Ben Mansour A, Mtir M, Ayari M, Toumia M, Rouis S, Sakly H, Nakhli R, Ben Garouia H, Chebil D, Hannachi H, Merzougui L, Samet S, Hrairi A, Mnif I, Hentati O, Bouzgarrou L, Souissi D, Boujdaria R, Kadoussi R, Rejeb H, Ben Limem I, Ben Salah I, Greb D, Ben Abdelghaffar H, Smadhi H, Laatiri H, Manoubi SA, Gharbaoui M, Hmandi O, Zhioua M, Taboubi F, Hamza Y, Hannach W, Jaziri H, Gharbi R, Hammami A, Dahmani W, Ben Ameur W, Ksiaa M, Ben Slama A, Brahem A, Elleuch N, Jmaa A, Kort I, Jlass S, Benabderrahim S, Turki E, Belhaj A, Kebsi D, Ben Khelil M, Rmadi N, Gamaoun H, Alaya Youzbechi F, Brahim T, Boujnah S, Abid N, Gader N, Kalboussi S, Ben Sassi S, Loukil M, Ghrairi H, Ben Said N, Mrad O, Ferjaoui M, Hedhli L, Ben Kaab B, Berriche A, Charfi R, Mourali O, Smichi I, Bel Haj Kacem L, Ksentini M, Aloui R, Ferchichi L, Nasraoui H, Maoua M, Chérif F, Belil Y, Ayed MA, Alloulou Y, Belhadj S, Daghfous J, Mehiri N, Louzir B, Abbes A, Ghrab A, Chermiti A, Akacha A, Mejri O, Debbiche A, Yahiaoui C, Binous M, Tissaoui A, Mekni K, El Fekih C, Said MA, Chtioui S, Mestiri S, Smaoui H, Ben Hamida S, Haddar A, Mrizek N, Gares N, Zaibi A, Bouazizi N, Gallas S, Lachhab A, Belhadj M, Hadj Salem N, Garrouch A, Mezgar Z, Khrouf M, Abbassi H, Souissi D, Hamra I, Ben Mustapha N, Abessi I, Boubaker F, Bouchareb S, ElOmma Mrabet H, Touil I, Boussoffara L, Knani J, Boudawara N, Alaya W, Sfar MH, Fekih S, Snène H, Boudawara N, Gargouri I, Benzarti W, Knaz A, Abdelghani A, Aissa S, Hayouni A, Mejri I, Kacem M, Mhamdi S, Daboussi S, Aichaouia C, Moatemri Z, Chaachou A, Fsili R, Ben Ghezala H, Ben Jazia A, Brahmi N. 2022 TUNISIAN NATIONAL CONGRESS OF MEDICINE ABSTRACTS. Tunis Med 2023; 101:62-64. [PMID: 37682263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Indexed: 09/09/2023]
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Lansigan F, Andorsky DJ, Coleman M, Yacoub A, Melear JM, Fanning SR, Kolibaba KS, Reynolds C, Nowakowski GS, Gharibo M, Ahn JR, Li J, Rummel MJ, Sharman JP. P1156: MAGNIFY PHASE 3B STUDY OF LENALIDOMIDE + RITUXIMAB (R2) FOLLOWED BY MAINTENANCE IN RELAPSED/REFRACTORY INDOLENT NON-HODGKIN LYMPHOMA: COMPLETE INDUCTION PHASE ANALYSIS. Hemasphere 2022. [PMCID: PMC9430939 DOI: 10.1097/01.hs9.0000847492.88194.df] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Coleman M, Andorsky DJ, Yacoub A, Melear JM, Fanning SR, Kolibaba KS, Lansigan F, Reynolds C, Nowakowski G, Gharibo M, Ahn E, Li J, Rummel MJ, Sharman JP. PATIENTS WITH RELAPSED/REFRACTORY MARGINAL ZONE LYMPHOMA IN THE MAGNIFY PHASE 3B INTERIM ANALYSIS OF INDUCTION R2 FOLLOWED BY MAINTENANCE. Hematol Transfus Cell Ther 2021. [DOI: 10.1016/j.htct.2021.10.167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Sharman JP, Melear JM, Yacoub A, Fanning SR, Andorsky DJ, Nowakowski GS, Rummel MJ, Lansigan F, Li J, Ahn JR, Gharibo M, Coleman M. INDUCTION R2 FOLLOWED BY MAINTENANCE IN PATIENTS WITH RELAPSED/REFRACTORY MANTLE CELL LYMPHOMA: INTERIM ANALYSIS FROM THE PHASE 3B MAGNIFY STUDY. Hematol Transfus Cell Ther 2021. [DOI: 10.1016/j.htct.2021.10.125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Sharman JP, Melear JM, Yacoub A, Fanning SR, Andorsky DJ, Nowakowski GS, Rummel MJ, Lansigan F, Li J, Ahn JR, Gharibo M, Coleman M. INDUCTION R
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FOLLOWED BY MAINTENANCE IN PATIENTS WITH RELAPSED/REFRACTORY MANTLE CELL LYMPHOMA: INTERIM ANALYSIS FROM THE PHASE 3B MAGNIFY STUDY. Hematol Oncol 2021. [DOI: 10.1002/hon.63_2879] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- J. P. Sharman
- Willamette Valley Cancer Institute and Research Center US Oncology Research Eugene Oregon USA
| | - J. M. Melear
- Texas Oncology‐Austin US Oncology Research Austin USA
| | - A. Yacoub
- University of Kansas Cancer Center Department of Hematology‐Oncology Westwood USA
| | | | - D. J. Andorsky
- Rocky Mountain Cancer Centers US Oncology Research Boulder USA
| | | | - M. J. Rummel
- Justus‐Liebig Universität, Med. Clinic IV Hematology Giessen Germany
| | - F. Lansigan
- Dartmouth‐Hitchcock Medical Center Division of Hematology and Oncology Lebanon USA
| | - J. Li
- Bristol Myers Squibb, Global Biometrics and Data Sciences Princeton New Jersey USA
| | - J. R. Ahn
- Bristol Myers Squibb US Medical Affairs Hematology Princeton New Jersey USA
| | - M. Gharibo
- Bristol Myers Squibb US Medical Affairs Hematology Princeton New Jersey USA
| | - M. Coleman
- Clinical Research Alliance Inc Weill Cornell Medicine New York USA
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Naija S, Yacoub A, Barhoumi M, Akkeri K, Chebbi G. [Ballistic trauma of the face: A new scourge in Tunisia]. ANN CHIR PLAST ESTH 2021; 66:210-216. [PMID: 33838955 DOI: 10.1016/j.anplas.2021.03.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 03/08/2021] [Accepted: 03/10/2021] [Indexed: 11/16/2022]
Abstract
INTRODUCTION Ballistic trauma of the face has aroused growing interest since the proliferation of conflicts in the world and particularly in the fight against terrorism. Their polymorphous and disfiguring character, their particular evolution and prognosis due to the ballistic aetiology, differentiate them from classic maxillofacial trauma. Tunisia did not escape this scourge after the revolution of 2011, and must therefore face the challenge of ballistic trauma in general and of the face in particular. MATERIALS AND METHODS We conducted a descriptive retrospective study on 30 patients who were victims of ballistic trauma of the face in the otolaryngology and maxillofacial surgery and ophthalmology departments of the Main Military Hospital of Tunis during the period from January 2011 to April 2018. Our objective was to assess the prevalence of these traumas in Tunisia after the revolution, and to assess their clinical and therapeutic aspects. RESULTS Our results showed a clear upward trend in these traumas, mainly caused by the opposition of our armed forces to the terrorist threat. The discussion of our results was therefore descriptive, comparing them to the literature. CONCLUSION Currently, it is imperative to develop a strategy for precise and effective management of ballistic trauma of the face due to the increase of armed conflicts, attacks and terrorist acts. Likewise, technological advances to develop soldier protection systems must be implemented.
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Affiliation(s)
- S Naija
- Services d'oto-rhino-laryngologie, de chirurgie maxillo-faciale et d'ophtalmologie de l'hôpital militaire principal d'instruction de Tunis, Tunis, Tunisie
| | - A Yacoub
- Services d'oto-rhino-laryngologie, de chirurgie maxillo-faciale et d'ophtalmologie de l'hôpital militaire principal d'instruction de Tunis, Tunis, Tunisie.
| | - M Barhoumi
- Services d'oto-rhino-laryngologie, de chirurgie maxillo-faciale et d'ophtalmologie de l'hôpital militaire principal d'instruction de Tunis, Tunis, Tunisie
| | - K Akkeri
- Services d'oto-rhino-laryngologie, de chirurgie maxillo-faciale et d'ophtalmologie de l'hôpital militaire principal d'instruction de Tunis, Tunis, Tunisie
| | - G Chebbi
- Services d'oto-rhino-laryngologie, de chirurgie maxillo-faciale et d'ophtalmologie de l'hôpital militaire principal d'instruction de Tunis, Tunis, Tunisie
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Yacoub A, Elfekih H, Nouira M, Boudriga H, Ezzine A, Charfi H, Ben Fredj M, Sfar R, Chatti K. Carcinome thyroïdien différencié chez l’enfant et l’adolescent : Une expérience tunisienne. Annales d'Endocrinologie 2020. [DOI: 10.1016/j.ando.2020.07.746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Mascarenhas J, Kosiorek H, Prchal J, Yacoub A, Berenzon D, Baer MR, Ritchie E, Silver RT, Kessler C, Winton E, Finazzi MC, Rambaldi A, Vannucchi AM, Leibowitz D, Rondelli D, Arcasoy MO, Catchatourian R, Vadakara J, Rosti V, Hexner E, Kremyanskaya M, Sandy L, Tripodi J, Najfeld V, Farnoud N, Salama ME, Weinberg RS, Rampal R, Goldberg JD, Mesa R, Dueck AC, Hoffman R. A prospective evaluation of pegylated interferon alfa-2a therapy in patients with polycythemia vera and essential thrombocythemia with a prior splanchnic vein thrombosis. Leukemia 2019; 33:2974-2978. [PMID: 31363161 PMCID: PMC6884668 DOI: 10.1038/s41375-019-0524-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 05/11/2019] [Accepted: 05/17/2019] [Indexed: 12/15/2022]
Affiliation(s)
- J Mascarenhas
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
| | | | - J Prchal
- Division of Hematology, University of Utah School of Medicine, Salt Lake City, UT, USA
| | - A Yacoub
- University of Kansas Cancer Center, Kansas City, KS, USA
| | - D Berenzon
- Comprehensive Cancer Center, Wake Forest University Medical Center, Wake Forest Health, Winston-Salem, NC, USA
| | - M R Baer
- University of Maryland Greenebaum Comprehensive Cancer Center, Baltimore, MD, USA
| | - E Ritchie
- Weill Cornell Medical College, New York, NY, USA
| | - R T Silver
- Weill Cornell Medical College, New York, NY, USA
| | - C Kessler
- Georgetown University Medical Center, Washington, DC, USA
| | - E Winton
- Winship Cancer Institute Emory University School of Medicine, Atlanta, GA, USA
| | - M C Finazzi
- Hematology, Azienda Socio Sanitaria Territoriale Papa Giovanni XXIII, Bergamo, Italy
| | - A Rambaldi
- Hematology, Azienda Socio Sanitaria Territoriale Papa Giovanni XXIII, Bergamo, Italy.,Department of Oncology, University of Milan, Milan, Italy
| | - A M Vannucchi
- CRIMM, Center Research and Innovation of Myeloproliferative Neoplasms, AOU Careggi, University of Florence, Florence, Italy
| | - D Leibowitz
- Oncology Department, Palo Alto Medical Foundation Sutter Health, Sunnyvale, CA, USA
| | - D Rondelli
- Division of Hematology/Oncology, University of Illinois at Chicago, Chicago, IL, USA
| | - M O Arcasoy
- Duke University School of Medicine, Durham, NC, USA
| | - R Catchatourian
- Oncology Department, John H Stroger Jr. Hospital of Cook County Chicago, Chicago, IL, USA
| | - J Vadakara
- Geisinger Medical Center, Danville, PA, USA
| | - V Rosti
- Center for the Study of Myelofibrosis, Laboratory of Biochemistry, Biotechnology, and Advanced Diagnosis, IRCCS Policlinico San Matteo Foundation, 19, viale Golgi, 27100, Pavia, Italy
| | - E Hexner
- University of Pennsylvania Abramson Cancer Center, Philadelphia, PA, USA
| | - M Kremyanskaya
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - L Sandy
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - J Tripodi
- Department of Pathology and Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - V Najfeld
- Department of Pathology and Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - N Farnoud
- Human Oncology and Pathogenesis Program, Memorial Sloan-Kettering Cancer Center, New York, NY, USA
| | - M E Salama
- Mayo Medical Laboratories, Rochester, MN, USA
| | | | - R Rampal
- Human Oncology and Pathogenesis Program, Memorial Sloan-Kettering Cancer Center, New York, NY, USA
| | - J D Goldberg
- Departments of Population Health and Environmental Medicine, New York University School of Medicine, New York, NY, USA
| | - R Mesa
- UT Health San Antonio Cancer Center, San Antonio, TX, USA
| | | | - R Hoffman
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
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Sharman J, Coleman M, Yacoub A, Melear J, Fanning S, Kolibaba K, Lansigan F, Reynolds C, Foon K, Li J, Llorente M, Rummel M, Andorsky D. INTERIM ANALYSIS OF PHASE IIIB MAGNIFY STUDY OF INDUCTION R2
FOLLOWED BY MAINTENANCE IN PATIENTS WITH RELAPSED/REFRACTORY INDOLENT NON-HODGKIN LYMPHOMA. Hematol Oncol 2019. [DOI: 10.1002/hon.76_2629] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- J. Sharman
- Willamette Valley Cancer Institute and Research Center; US Oncology Research; Eugene United States
| | - M. Coleman
- Clinical Research Alliance Inc.; Weill Cornell Medicine; New York United States
| | - A. Yacoub
- Hematology; University of Kansas Cancer Center; Westwood United States
| | - J. Melear
- Texas Oncology - Austin; US Oncology Research; Austin United States
| | - S. Fanning
- Greenville Health System; US Oncology Research; Greenville United States
| | - K. Kolibaba
- Compass Oncology; US Oncology Research; Vancouver United States
| | - F. Lansigan
- Hematology; Dartmouth-Hitchcock Medical Center; Lebanon United States
| | - C. Reynolds
- Hematology; IHA Hematology Oncology Consultants - Ann Arbor; Ypsilanti United States
| | - K. Foon
- Global Medical Affairs; Celgene Corporation; Summit United States
| | - J. Li
- BioStatistics; Celgene Corporation; Summit United States
| | - M. Llorente
- Global Medical Affairs; Celgene Corporation; Summit United States
| | - M. Rummel
- Hematology; Justus-Liebig Universität; Giessen Germany
| | - D. Andorsky
- Rocky Mountain Cancer Centers; US Oncology Research; Boulder United States
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Sharman J, Coleman M, Yacoub A, Melear J, Fanning S, Kolibaba K, Lansigan F, Reynolds C, Foon K, Li J, Llorente M, Rummel M, Andorsky D. MAGNIFY PHASE IIIB INTERIM ANALYSIS: FIRST REPORT OF INDUCTION R 2
FOLLOWED BY MAINTENANCE IN PATIENTS WITH RELAPSED/REFRACTORY MANTLE CELL LYMPHOMA. Hematol Oncol 2019. [DOI: 10.1002/hon.51_2630] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- J. Sharman
- Willamette Valley Cancer Institute and Research Center; US Oncology Research; Eugene United States
| | - M. Coleman
- Clinical Research Alliance Inc.; Weill Cornell Medicine; New York United States
| | - A. Yacoub
- Hematology; University of Kansas Cancer Center; Westwood United States
| | - J. Melear
- Texas Oncology - Austin; US Oncology Research; Austin United States
| | - S. Fanning
- Greenville Health System; US Oncology Research; Greenville United States
| | - K. Kolibaba
- Compass Oncology; US Oncology Research; Vancouver United States
| | - F. Lansigan
- Hematology; Dartmouth-Hitchcock Medical Center; Lebanon United States
| | - C. Reynolds
- Hematology; IHA Hematology Oncology Consultants - Ann Arbor; Ypsilanti United States
| | - K. Foon
- Global Medical Affairs; Celgene Corporation; Summit United States
| | - J. Li
- BioStatistics; Celgene Corporation; Summit United States
| | - M. Llorente
- Global Medical Affairs; Celgene Corporation; Summit United States
| | - M. Rummel
- Hematology; Justus-Liebig Universität; Giessen Germany
| | - D. Andorsky
- Rocky Mountain Cancer Centers; US Oncology Research; Boulder United States
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12
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Coleman M, Andorsky D, Yacoub A, Melear J, Kolibaba K, Brooks H, Bitran J, Fanning S, Lansigan F, Ricker J, Foon K, Llorente M, Li J, Sharman J. PHASE IIIB STUDY OF LENALIDOMIDE PLUS RITUXIMAB FOLLOWED BY MAINTENANCE IN RELAPSED OR REFRACTORY NHL: ANALYSIS OF MARGINAL ZONE LYMPHOMA. Hematol Oncol 2017. [DOI: 10.1002/hon.2437_138] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- M. Coleman
- Hematology/Oncology; Clinical Research Alliance, Weill Cornell Medicine; New York New York USA
| | - D.J. Andorsky
- Oncology/Hematology; Rocky Mountain Cancer Centers, US Oncology Research; Boulder Colorado USA
| | - A. Yacoub
- Hematology/Oncology; University of Kansas Cancer Center; Westwood Kansas USA
| | - J.M. Melear
- Hematology/Oncology; Texas Oncology; Austin Texas USA
| | - K.S. Kolibaba
- Oncology/Hematology; Northwest Cancer Specialists PC; Vancouver WA USA
| | - H.D. Brooks
- Hematology/Oncology; Oncology and Hematology Associates, US Oncology Research; Roanoke Virginia USA
| | - J.D. Bitran
- Hematology/Oncology; Oncology Specialists, SC; Park Ridge Illinois USA
| | - S.R. Fanning
- Hematology/Oncology; Greenville Health System; Greenville South Carolina USA
| | - F. Lansigan
- Hematology/Oncology; Dartmouth Hitchcock Medical Center; Lebanon New Hampshire USA
| | - J.L. Ricker
- Medical Affairs; Celgene Corporation; Summit New Jersey USA
| | - K.A. Foon
- Medical Affairs; Celgene Corporation; Summit New Jersey USA
| | - M. Llorente
- Medical Affairs; Celgene Corporation; Summit New Jersey USA
| | - J. Li
- BioStats; Celgene Corporation; Summit New Jersey USA
| | - J.P. Sharman
- Hematology/Oncology; Willamette Valley Cancer Institute and Research Center, US Oncology Research; Springfield Oregon USA
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13
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Fowler N, Gopal A, Schuster S, Trotman J, Hess G, Hou J, Yacoub A, Lill M, Martin P, Vitolo U, Spencer A, Radford J, Jurczak W, Morton J, Osmanov D, Caballero D, Deshpande S, Vermeulen J, Damle R, Schaffer M, Balasubramanian S, Cheson B, Salles G. Biomarker analysis of patients with follicular lymphoma treated with ibrutinib in the phase 2 DAWN study. Hematol Oncol 2017. [DOI: 10.1002/hon.2438_75] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- N. Fowler
- Department of Lymphoma/Myeloma; The University of Texas MD Anderson Cancer Center; Houston USA
| | - A.K. Gopal
- Seattle Cancer Care Alliance; The University of Washington/Fred Hutchison Cancer Research Center; Seattle USA
| | - S.J. Schuster
- Lymphoma Program; Abramson Cancer Center of the University of Pennsylvania; Philadelphia USA
| | - J. Trotman
- Concord Hospital; University of Sydney, Haematology Department; Sydney Australia
| | - G. Hess
- Department of Hematology/Oncology; Johannes Gutenberg University; Mainz Germany
| | - J. Hou
- Division of Hematology/Oncology; University of Pittsburgh Medical Center and University of Pittsburgh Cancer Institute; Pittsburgh USA
| | - A. Yacoub
- Hematologic Malignancies and Cellular Therapeutics; University of Kansas Medical Center; Kansas City USA
| | - M. Lill
- Stem Cell and Bone Marrow Transplant Program, Cedars-Sinai Medical Center; Los Angeles USA
| | - P. Martin
- Weill Cornell Medical College; Cornell University; New York USA
| | - U. Vitolo
- Hematology; Azienda Ospedaliero Universitaria Città della Salute e della Scienza di Torino; Turin Italy
| | - A. Spencer
- Central Clinical School; Alfred Hospital-Monash University; Melbourne Australia
| | - J. Radford
- University of Manchester and the Christie NHS Foundation Trust; Manchester Academic Health Science Centre; Manchester UK
| | - W. Jurczak
- Department of Hematology; Jagiellonian University; Krakow Poland
| | - J. Morton
- Clinical Haemato-Oncology; Haematology and Oncology Clinics of Australia; Milton Australia
| | - D. Osmanov
- Blokhin Cancer Research Center; Russian Academy of Medical Sciences; Moscow Russian Federation
| | - D. Caballero
- Instituto Biosanitario de Salamanca; Hospital Clínico Universitario; Salamanca Spain
| | | | - J. Vermeulen
- Research & Development, Janssen; Leiden The Netherlands
| | - R. Damle
- Research & Development, Janssen; Raritan USA
| | - M. Schaffer
- Research & Development, Janssen; Raritan USA
| | | | - B. Cheson
- Lombardi Comprehensive Cancer Center; Georgetown University Hospital; Washington District of Columbia USA
| | - G. Salles
- Haematology Department; Hospices Civils de Lyon-Université de Lyon; Lyon France
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Serrand M, Lefèbvre A, Desplanches T, Yacoub A, Semama D, Sagot P. [CME MMC: Evaluation of a continuous medical education tool by e-learning from the morbi-mortality conferences of the Burgundy]. J Gynecol Obstet Hum Reprod 2016; 45:890-899. [PMID: 27771204 DOI: 10.1016/j.jgyn.2016.08.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2016] [Revised: 06/29/2016] [Accepted: 08/30/2016] [Indexed: 06/06/2023]
Abstract
OBJECTIVES The objective of this study was to validate a continuing medical education e-learning tool. METHODS The CME MMC was for all health professionals maternity Burgundy and concerned regional morbidity and mortality conferences. It was divided into steps: a pre-test for an assessment of initial knowledge, an access to the recommendations of each RMM and a post-test to assess the progress of participants. A satisfaction questionnaire was proposed after the test. The primary endpoint was the comparison of the post-test scores than the pre-test. RESULTS CME MMC was opened 3 months and recorded 156 participants among 598 health professionals in Burgundy, a rate 2.4 times higher than the average participation rate at MMC the past two years. A statistically significant increase was demonstrated individually by comparing the post-test scores than the pre-test (P<0.00001). The increase was significantly higher for midwives and professionals absents at the RMM. Finally, 96.2% of participants have been satisfied by this formation. CONCLUSION This prospective multicenter study validates our tool. CME MMC is accessible, without geographic or time restrictions, not expensive, and efficient because it proves that it can update our knowledge in obstetrics and perinatology.
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Affiliation(s)
- M Serrand
- Service de gynécologie-obstétrique, CHU de Dijon, 2, boulevard de Lattre-de-Tassigny, 21000 Dijon, France.
| | - A Lefèbvre
- Service d'épidémiologie et hygiène hospitalière, CHU de Dijon, 2, boulevard de Lattre-de-Tassigny, 21000 Dijon, France
| | - T Desplanches
- Réseau périnatal de Bourgogne, CHU de Dijon, 4, boulevard Maréchal-de-Lattre-de-Tassigny, BP 77908, 21079 Dijon cedex, France
| | - A Yacoub
- Service de gynécologie-obstétrique, CHU de Dijon, 2, boulevard de Lattre-de-Tassigny, 21000 Dijon, France; Réseau périnatal de Bourgogne, CHU de Dijon, 4, boulevard Maréchal-de-Lattre-de-Tassigny, BP 77908, 21079 Dijon cedex, France
| | - D Semama
- Réseau périnatal de Bourgogne, CHU de Dijon, 4, boulevard Maréchal-de-Lattre-de-Tassigny, BP 77908, 21079 Dijon cedex, France; Service de pédiatrie, CHU de Dijon, 2, boulevard de Lattre-de-Tassigny, 21000 Dijon, France
| | - P Sagot
- Service de gynécologie-obstétrique, CHU de Dijon, 2, boulevard de Lattre-de-Tassigny, 21000 Dijon, France; Réseau périnatal de Bourgogne, CHU de Dijon, 4, boulevard Maréchal-de-Lattre-de-Tassigny, BP 77908, 21079 Dijon cedex, France
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Yacoub A, Odenike O, Verstovsek S. Ruxolitinib: long-term management of patients with myelofibrosis and future directions in the treatment of myeloproliferative neoplasms. Curr Hematol Malig Rep 2014; 9:350-9. [PMID: 25145552 PMCID: PMC4223534 DOI: 10.1007/s11899-014-0229-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Considerable clinical experience regarding the long-term efficacy and safety of ruxolitinib has been gathered since the drug was approved in the USA for patients with intermediate or high-risk myelofibrosis (MF) in November 2011. Findings from the pivotal phase 3 COMFORT studies showed that ruxolitinib-associated reductions in MF-related splenomegaly and symptom burden occur rapidly and in the majority of patients. Two- and 3-year follow-up data further suggest that the benefits of ruxolitinib are durable and associated with a survival advantage compared with conventional therapies. However, careful management of treatment-related thrombocytopenia and anemia with dose modifications and supportive care is critical to allow chronic therapy. Based on preliminary evidence, ruxolitinib also allows spleen size and symptom reduction before allogeneic stem cell transplantation without negative effect on engraftment or outcomes. In recent studies, ruxolitinib provided effective management of hematologic parameters and symptoms in patients with polycythemia vera refractory to or intolerant of hydroxyurea.
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Affiliation(s)
- A. Yacoub
- Department of Hematology and Oncology, University of Kansas Medical Center, 3901 Rainbow Boulevard, Kansas City, KS 66160 USA
| | - O. Odenike
- Section of Hematology/Oncology, University of Chicago and Comprehensive Cancer Center, 5841 S. Maryland Avenue, MC 2115, Chicago, IL 60637 USA
| | - S. Verstovsek
- Clinical Research Center for Myeloproliferative Neoplasia, Department of Leukemia, MD Anderson Cancer Center, 1515 Holcombe Blvd., Suite 428, Houston, 77030 TX USA
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16
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Liu L, Benyeda Z, Zohari S, Yacoub A, Isaksson M, Leijon M, LeBlanc N, Benyeda J, Belák S. Assessment of Preparation of Samples Under the Field Conditions and a Portable Real-Time RT-PCR Assay for the Rapid On-Site Detection of Newcastle Disease Virus. Transbound Emerg Dis 2014; 63:e245-50. [PMID: 25209697 DOI: 10.1111/tbed.12261] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2014] [Indexed: 02/06/2023]
Abstract
Newcastle disease virus (NDV), also known as virulent forms of avian paramyxovirus serotype 1 (AMPV-1), is the causative agent of Newcastle disease affecting many species of birds and causing heavy losses to the poultry industry worldwide. Early, rapid and sensitive detection of the viruses or the viral nucleic acids is very important for disease diagnosis and control. This study aimed to evaluate sample preparation under field conditions and the application of a real-time RT-PCR method in the portable T-COR4 platform for the rapid, on-site detection of NDV on a farm. In the laboratory setting, the portable real-time RT-PCR assay had a similar performance compared with that obtained with a larger, stationary Rotor Gene real-time thermocycler. In the field conditions, viral nucleic acids were manually extracted just outside of animal units with minimal equipment and real-time RT-PCR detection was performed with the portable thermocycler T-COR4 placed in a nearby room. The portable assay at the farm detected viral RNA in 15 samples and reached an agreement of 83% (39/47) when the same RNA preparations were tested in the Rotor Gene thermocycler under the laboratory setting. The results demonstrated the feasibility of performing field detection but also the need to improve and further simplify sample preparation procedures.
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Affiliation(s)
- L Liu
- Department of Virology, Immunobiology and Parasitology, National Veterinary Institute, Uppsala, Sweden.,The OIE Collaborating Centre for the Biotechnology-based Diagnosis of Infectious Diseases in Veterinary Medicine, Uppsala, Sweden
| | - Z Benyeda
- Prophyl Animal Health Ltd, Mohács, Hungary
| | - S Zohari
- Department of Virology, Immunobiology and Parasitology, National Veterinary Institute, Uppsala, Sweden.,The OIE Collaborating Centre for the Biotechnology-based Diagnosis of Infectious Diseases in Veterinary Medicine, Uppsala, Sweden
| | - A Yacoub
- Department of Virology, Immunobiology and Parasitology, National Veterinary Institute, Uppsala, Sweden.,The OIE Collaborating Centre for the Biotechnology-based Diagnosis of Infectious Diseases in Veterinary Medicine, Uppsala, Sweden
| | - M Isaksson
- Department of Virology, Immunobiology and Parasitology, National Veterinary Institute, Uppsala, Sweden.,The OIE Collaborating Centre for the Biotechnology-based Diagnosis of Infectious Diseases in Veterinary Medicine, Uppsala, Sweden
| | - M Leijon
- Department of Virology, Immunobiology and Parasitology, National Veterinary Institute, Uppsala, Sweden.,The OIE Collaborating Centre for the Biotechnology-based Diagnosis of Infectious Diseases in Veterinary Medicine, Uppsala, Sweden
| | - N LeBlanc
- Department of Virology, Immunobiology and Parasitology, National Veterinary Institute, Uppsala, Sweden.,The OIE Collaborating Centre for the Biotechnology-based Diagnosis of Infectious Diseases in Veterinary Medicine, Uppsala, Sweden
| | - J Benyeda
- Prophyl Animal Health Ltd, Mohács, Hungary
| | - S Belák
- Department of Virology, Immunobiology and Parasitology, National Veterinary Institute, Uppsala, Sweden.,The OIE Collaborating Centre for the Biotechnology-based Diagnosis of Infectious Diseases in Veterinary Medicine, Uppsala, Sweden
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17
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Yacoub A, von Salis-Soglio G, Heyde CE. [Correction of pronounced plagiocephaly with orthosis : results of a prospective follow-up control]. Orthopade 2013; 42:928-33. [PMID: 24057338 DOI: 10.1007/s00132-013-2171-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
For the treatment of pronounced deformational plagiocephaly in infants different therapeutic options are under discussion in the literature. This article presents a prospective observational study of 45 infants enrolled with distinct plagiocephaly and treated with a custom-made helmet orthosis. Treatment with the helmet orthosis was indicated by a difference in the skull diagonals of more than 0.5 cm or a cranial vault asymmetry (CVA) index > 3.5. The follow-up results were controlled with the help of a mobile spatial laser scanner and the CVA index and the skull deformity were measured. The average duration of treatment was 131 days. The CVA index improved from 9.95 to a normal value of 3.35 (median) and the skull deformity improved from 1.3 cm to 0.5 cm (median). The only side effects observed were easily treatable pressure marks. The results of this study reveal that pronounced deformational plagiocephaly can be successfully treated with a custom-made helmet orthosis and closely controlled monitoring.
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Affiliation(s)
- A Yacoub
- Orthopädische Praxis, Taucha, Deutschland
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18
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Saghrouni F, Bougmiza I, Ben Abdeljelil J, Yacoub A, Khammari I, Fathallah A, Mtiraoui A, Ben Saïd M. Epidemiological trends in invasive candidiasis: Results from a 15-year study in Sousse region, Tunisia. J Mycol Med 2011. [DOI: 10.1016/j.mycmed.2011.04.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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19
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Safar AM, Yacoub A, Hennings L, Beck JT, Spencer HJ, Hutchins LF, Eid AA. The study of the immature vessel percentage (IVP) as a potential predictive factor for chemotherapy response in breast cancer: A multicenter study. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e21038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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McMenamy MJ, McKillen J, Hjertner B, Kiss I, Yacoub A, Leijon M, Duffy C, Belák S, Welsh M, Allan G. Development and comparison of a Primer-Probe Energy Transfer based assay and a 5' conjugated Minor Groove Binder assay for sensitive real-time PCR detection of infectious laryngotracheitis virus. J Virol Methods 2011; 175:149-55. [PMID: 21539859 DOI: 10.1016/j.jviromet.2011.04.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [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: 12/08/2010] [Revised: 04/14/2011] [Accepted: 04/19/2011] [Indexed: 11/17/2022]
Abstract
In this study the design and development of two real-time PCR assays for the rapid, sensitive and specific detection of infectious laryngotracheitis virus (ILTV) DNA is described. A Primer-Probe Energy Transfer (PriProET) assay and 5' conjugated Minor Groove Binder (MGB) method are compared and contrasted. Both have been designed to target the thymidine kinase gene of the ILTV genome. Both PriProET and MGB assays are capable of detecting 20 copies of a DNA standard per reaction and are linear from 2×10(8) to 2×10(2)copies/μl. Neither PriProET, nor MGB reacted with heterologous herpesviruses, indicating a high specificity of the two methods as novel tools for virus detection and identification. This study demonstrates the suitability of PriProET and 5' conjugated MGB probes as real-time PCR chemistries for the diagnosis of respiratory diseases caused by ILTV.
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Affiliation(s)
- M J McMenamy
- School of Biological Sciences, Queen's University Belfast, Belfast BT9 7BL, Northern Ireland, United Kingdom.
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Krishna K, Krishna SG, Coviello-malle JM, Yacoub A, Hutchins LF. Celiac crisis in a patient with chronic lymphocytic leukemia and hypogammaglobulinemia. Clin Res Hepatol Gastroenterol 2011; 35:70-3. [PMID: 20822871 DOI: 10.1016/j.gcb.2010.08.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [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: 07/24/2010] [Accepted: 08/02/2010] [Indexed: 02/04/2023]
Abstract
Celiac crisis is an acute, fulminant form of celiac disease manifesting with severe diarrhea, metabolic and electrolyte abnormalities, and weight loss. It is mostly seen in children, and there are very few reports in adults. We present a 67-year-old patient with chronic lymphocytic leukemia (CLL) who presented with weight loss of 40 pounds, severe diarrhea, hypoalbuminemia and hypokalemia. The patient was immunosuppressed with hypogammaglobulinemia, which is common in CLL. Thus, the patient had negative serological studies for celiac disease. An endoscopic evaluation and HLA typing supported the diagnosis of celiac disease. Although the differential diagnosis was broad, exclusion of other etiologies for diarrhea, prompt diagnosis of celiac disease and initiation of gluten-free diet resolved the crisis. This is the first such report of a patient presenting with celiac crisis on a background of hypogammaglobulinemia.
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Affiliation(s)
- K Krishna
- Department of Internal Medicine, University of Arkansas for Medical Sciences, Little Rock, 72205 Arkansas, USA
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23
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Yacoub A, Ferdynus C, Tixier H, Mourtialon P, Pinard E, Dunand A, Sagot P, Douvier S. Laparoscopic (LSC) Versus Robotic (RASC) Sacrocolcopexy. Comparison of Learning Curve of a Single Laparoscopic Experimented Surgeon in Dijon Teaching Hospital, France. J Minim Invasive Gynecol 2010. [DOI: 10.1016/j.jmig.2010.08.064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Yacoub A, Kiss I, Zohari S, Hakhverdyan M, Czifra G, Mohamed N, Gyarmati P, Blomberg J, Belák S. The rapid molecular subtyping and pathotyping of avian influenza viruses. J Virol Methods 2008; 156:157-61. [PMID: 19026689 DOI: 10.1016/j.jviromet.2008.10.019] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2008] [Revised: 10/03/2008] [Accepted: 10/13/2008] [Indexed: 10/21/2022]
Abstract
Highly conserved nucleotide stretches flanking the cleavage site of the haemagglutinin (HA) gene of influenza type A viruses were utilised for generating PCR amplicons from a broad range of avian influenza viruses (AIV) in a one-step real-time SYBR Green RT-PCR assay. The nucleotide sequencing of the amplified PCR products simultaneously reveals both the HA subtype and the pathotype of the AIV isolates, as we demonstrated in case of H5 subtype viruses. The specificity of the assay was confirmed by investigating 66 strains of AIV and nine heterologous pathogens, including influenza B, C and various avian pathogenic viruses. This assay enables a general HA subtype identification and pathotype determination of AIV isolates providing a useful alternative tool for avian influenza diagnosis.
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Affiliation(s)
- A Yacoub
- The National Veterinary Institute and The Swedish University of Agricultural Sciences, OIE Collaborating Centre for the Biotechnology-Based Diagnosis of Infectious Diseases in Veterinary Medicine, Ulls väg 2B, SE 751 89 Uppsala, Sweden.
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Hagan M, Yacoub A, Dent P. PARG Release from the Mitochondria Regulates the Duration of ERK-induced PARP1 Activation Following Ionizing Irradiation. Int J Radiat Oncol Biol Phys 2008. [DOI: 10.1016/j.ijrobp.2008.06.812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Hagan M, Yacoub A, Dent P. The switch from DNA repair to apoptosis: discovery of a refractory period for radiation-induced EGFR-MAPK signaling following irradiation. Int J Radiat Oncol Biol Phys 2003. [DOI: 10.1016/s0360-3016(03)01154-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Shvartsman SY, Hagan MP, Yacoub A, Dent P, Wiley HS, Lauffenburger DA. Autocrine loops with positive feedback enable context-dependent cell signaling. Am J Physiol Cell Physiol 2002; 282:C545-59. [PMID: 11832340 DOI: 10.1152/ajpcell.00260.2001] [Citation(s) in RCA: 101] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
We describe a mechanism for context-dependent cell signaling mediated by autocrine loops with positive feedback. We demonstrate that the composition of the extracellular medium can critically influence the intracellular signaling dynamics induced by extracellular stimuli. Specifically, in the epidermal growth factor receptor (EGFR) system, amplitude and duration of mitogen-activated protein kinase (MAPK) activation are modulated by the positive-feedback loop formed by the EGFR, the Ras-MAPK signaling pathway, and a ligand-releasing protease. The signaling response to a transient input is short-lived when most of the released ligand is lost to the cellular microenvironment by diffusion and/or interaction with an extracellular ligand-binding component. In contrast, the response is prolonged or persistent in a cell that is efficient in recapturing the endogenous ligand. To study functional capabilities of autocrine loops, we have developed a mathematical model that accounts for ligand release, transport, binding, and intracellular signaling. We find that context-dependent signaling arises as a result of dynamic interaction between the parts of an autocrine loop. Using the model, we can directly interpret experimental observations on context-dependent responses of autocrine cells to ionizing radiation. In human carcinoma cells, MAPK signaling patterns induced by a short pulse of ionizing radiation can be transient or sustained, depending on cell type and composition of the extracellular medium. On the basis of our model, we propose that autocrine loops in this, and potentially other, growth factor and cytokine systems may serve as modules for context-dependent cell signaling.
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Affiliation(s)
- S Y Shvartsman
- Department of Chemical Engineering, Lewis Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ 08544, USA
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Qiao L, Leach K, McKinstry R, Gilfor D, Yacoub A, Park JS, Grant S, Hylemon PB, Fisher PB, Dent P. Hepatitis B virus X protein increases expression of p21(Cip-1/WAF1/MDA6) and p27(Kip-1) in primary mouse hepatocytes, leading to reduced cell cycle progression. Hepatology 2001; 34:906-17. [PMID: 11679961 DOI: 10.1053/jhep.2001.28886] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Previously, we have linked prolonged intense mitogen-activated protein kinase (MAP kinase; MAPK) signaling in hepatocytes to increased expression of p21(Cip-1/WAF1/MDA6) (p21) and p16(INK4a) (p16), that leads to a p21-dependent growth arrest. In this study, we investigated the impact of hepatitis B virus X protein (pX) expression on MAPK-modulated cell cycle progression in primary mouse hepatocytes. In hepatocytes, expression of pX enhanced protein levels of p21 and p27, but not of p16. The elevated levels of p21 and p27 correlated with reduced DNA synthesis in wild-type (+/+) hepatocytes and with a weak stimulation of DNA synthesis in p21 null (-/-) cells. Antisense p27 messenger RNA (mRNA) (p27as) increased DNA synthesis in +/+ and p21 -/- cells, and pX blunted this effect in +/+ cells. In p21 -/- cells, however, p27as permitted pX to further stimulate DNA synthesis. These data argue that a reduced ability to enhance expression of both p21 and p27 is required to fully reveal the growth-potentiating properties of pX. This finding also implies that depending on the functional status of the p21 and p27 genes, expression of pX can have 2 very different effects on hepatocyte proliferation. Prolonged intense MAPK signaling reduced DNA synthesis in +/+ cells and enhanced DNA synthesis in p21 -/- cells. The enhancement of DNA synthesis in p21 -/- cells was blocked by pX, and the effect of pX was abrogated by p27as. Furthermore in p21 -/- cells, overexpression of p16 blocked MAPK-stimulated DNA synthesis, and this effect was partially reversed by p27as. These data argue that p27 can also cooperatively interact with p16 to inhibit DNA synthesis in hepatocytes. Collectively, our findings show that reduced expression of p16, p21, and p27, which can occur during hepatocellular carcinoma, enhances the ability of MAPK signaling and pX to cause proliferation in hepatocytes. Thus loss of cyclin kinase inhibitor function may play an important role in the process of tumor progression after chronic hepatitis B virus infection.
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Affiliation(s)
- L Qiao
- Department of Radiation Oncology, Medical College of Virginia, Virginia Commonwealth University, Richmond, VA 23298-0058, USA
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Yacoub A, Park JS, Qiao L, Dent P, Hagan MP. MAPK dependence of DNA damage repair: ionizing radiation and the induction of expression of the DNA repair genes XRCC1 and ERCC1 in DU145 human prostate carcinoma cells in a MEK1/2 dependent fashion. Int J Radiat Biol 2001; 77:1067-78. [PMID: 11682011 DOI: 10.1080/09553000110069317] [Citation(s) in RCA: 66] [Impact Index Per Article: 2.9] [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: 10/17/2022]
Abstract
PURPOSE To examine the role of mitogen-activated protein kinase (MAPK) signalling on the induction by ionizing radiation of the nucleotide excision repair gene (ERCC1), the X-ray cross-complementing group 1 protein (XRCC1) and the repair of radiation-induced DNA damage. MATERIALS AND METHODS The expression of ERCC1 and XRCC1 was examined in DU145 human prostate cancer cells following exposure to ionizing radiation. We characterized the MAPK dependence of this expression through RT-PCR analysis, Western analysis, transcription inhibition and measurement of the activation of each promoter. Pre-exposure with the specific MEK1/2 inhibitor PD980059 (10 microM) was used to blunt radiation induction of MAPK without suppressing basal levels of MAPK activity. In addition, we examined the MAPK dependence of DNA damage repair by measuring radiation-induced micronucleus formation and the removal of and nicking activity associated with AP sites. RESULTS Irradiation caused a time-dependent, MAPK-dependent increase in the protein levels of both ERCC1 and XRCC1. For each gene product, the protein level increase followed an increase in mRNA, which also was MAPK-dependent. Radiation also enhanced the activities of the ERCC1 and XRCC1 promoters in an MAPK-dependent fashion. Inhibition of transcription by DRB abolished the radiation-induced increase of ERCC1 and XRCC1 proteins. Inhibition of radiation-induced MAPK also diminished the ability of DU145 cells to remove AP sites and increased the number of cells displaying micronuclei following radiation exposure. CONCLUSIONS These findings demonstrate a role for radiation-induced MAPK signalling in the regulation of DNA repair enzyme levels and DNA repair. Radiation-induced protein expression of ERCC1 and XRCC1 appears to require de novo transcription. These data suggest a significant role for MAPK signalling in the early response to DNA damage caused by ionizing radiation.
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Affiliation(s)
- A Yacoub
- Department of Radiation Oncology, Medical College of Virginia, Virginia Commonwealth University, Richmond, VA 23298, USA
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Abstract
BACKGROUND The porcine virus denominated La Piedad Michoacan Virus (LPMV) is a member of the family Paramyxoviridae and is the cause of a disease in pigs present only in Mexico. The disease is characterized by meningoencephalitis and respiratory distress in young pigs, epididymitis and orchitis in boars, and reproductive failure and abortion in sows. METHODS The cytopathology, morphology, and distribution of the hemagglutination neuraminidase (HN) and nucleoprotein (NP) proteins of LPMV were investigated following inoculation into PK-15 cells. The cytopathic effect was characterized by cytoplasmic vacuolation and the formation of syncytia and cytoplasmic inclusion bodies. RESULTS In immunofluorescence assays using a monoclonal antibody (MAb) against the HN protein at 5-60 min post-infection (early infection), a diffuse immunofluorescence was observed near the cell membrane and adjacent to the nuclear membrane. At 24 h post-infection (late infection), a dust-like immunofluorescence was observed throughout the cytoplasm. LPMV-infected cells incubated with the MAb against the NP protein showed punctate cytoplasmic fluorescence during the early stages of infection. At the late infection stage, these fluorescent particles became larger and were seen predominantly in the cytoplasm of syncytia. This pattern was also apparent by immunohistochemical labeling and immunogold electron microscopy. The latter technique revealed that HN protein was diffusely distributed throughout the cytoplasm. When using the MAb against the NP protein, nucleocapsid organization was the most prominent feature and resulted in the formation of cytoplasmic inclusion bodies visible by light and electron microscopy. Immunogold labeling of purified nucleocapsids was shown by electron microscopy. Virus particles and nucleocapsids were morphologically similar to members of the Paramyxoviridae family. CONCLUSIONS The morphologic characteristics of the virions and the distribution patterns of the HN and NP proteins in PK-15 infected cells indicate that the mechanisms of LPMV replication are generally similar to those of the members of the Paramyxoviridae family.
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Affiliation(s)
- P Hernández-Jáuregui
- Department of Veterinary Microbiology, Section of Virology, Swedish University of Agricultural Sciences, SLU, Biomedical Center, Uppsala, Sweden
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Park JS, Qiao L, Su ZZ, Hinman D, Willoughby K, McKinstry R, Yacoub A, Duigou GJ, Young CS, Grant S, Hagan MP, Ellis E, Fisher PB, Dent P. Ionizing radiation modulates vascular endothelial growth factor (VEGF) expression through multiple mitogen activated protein kinase dependent pathways. Oncogene 2001; 20:3266-80. [PMID: 11423976 DOI: 10.1038/sj.onc.1204258] [Citation(s) in RCA: 98] [Impact Index Per Article: 4.3] [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] [Received: 10/13/2000] [Revised: 01/03/2001] [Accepted: 01/07/2001] [Indexed: 11/09/2022]
Abstract
We investigated the role of radiation-induced mitogen activated protein kinase (MAPK) pathway activity in the regulation of proliferation, cell survival and vascular endothelial growth factor (VEGF) production in primary astrocytes and in T9 and RT2 glioblastoma cells derived from Fisher 344 rats. In these cells, ionizing radiation (2 Gy) caused activation of the MAPK pathway which was blocked by specific inhibitor drugs. Blunting of radiation-induced MAPK activity weakly enhanced radiation-induced apoptosis 24 h after exposure in RT2 cells. Furthermore, blunting of MAPK activation weakly enhanced the ability of radiation to reduce RT2 cell growth in clonogenic growth assays. These findings argue that inhibition of MAPK signaling reduces proliferation and enhances cell killing by ionizing radiation in transformed astrocytes. Proliferation and survival of cancer cells has been linked in vivo to enhanced expression of angiogenic growth factors. Recently we demonstrated that the gene product of a novel rodent radiation-responsive gene, progression elevated gene 3 (PEG-3), could enhance vascular endothelial growth factor (VEGF) promoter activity in rodent fibroblasts, leading to increased VEGF protein levels and tumorigenic behavior in vivo. Thus PEG-3 and VEGF expression could be expected to directly correlate with the oncogenic potential of transformed cells. RT2 cells expressed more PEG-3 and VEGF protein than T9 cells, and were more tumorigenic in vivo than T9 cells. Radiation activated the PEG-3 promoter via MAPK signaling and ectopic over-expression of PEG-3 enhanced both basal MAPK activity and basal VEGF promoter activity. Basal MAPK activity partially correlated with basal VEGF promoter activity and VEGF protein levels in primary astrocytes, T9 and RT2 cells. Radiation increased the activity of the VEGF promoter and VEGF protein levels in primary astrocytes, T9 and RT2 cells which were dependent upon MAPK function. Furthermore, inhibition of AP-1 transcription factor signaling by dominant negative c-Jun (TAM67) also significantly reduced basal, and to a lesser extent radiation-induced, VEGF promoter function in RT2 cells. Collectively, our data demonstrate that radiation-induced MAPK signaling can both protect cells from radiation-induced cell death as well as enhance protein levels of pro-angiogenic factors such as VEGF. Enhanced VEGF expression in RT2 cells may be mediated via MAPK and JNK pathway signaling which converges upon the AP-1 transcription factor complex.
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Affiliation(s)
- J S Park
- Department of Radiation Oncology, Medical College of Virginia, Virginia Commonwealth University, Richmond, Virginia, VA 23298, USA
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Yacoub A, Arduini R, Possagnolo C, Infantolino D, Venza E, Dalla Pria A, Cascone C, Puglisi A. Increased postprandial remnant like particles — Cholesterol in hemodialysed patients with coronary heart disease. Atorvastatin decreases fasting and postprandial RLP-cholesterol and RLP-triglycerides. Atherosclerosis 1999. [DOI: 10.1016/s0021-9150(99)80485-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Deutsch WA, Yacoub A. Characterization of DNA strand cleavage by enzymes that act at abasic sites in DNA. Methods Mol Biol 1999; 113:281-8. [PMID: 10443427 DOI: 10.1385/1-59259-675-4:281] [Citation(s) in RCA: 0] [Impact Index Per Article: 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: 04/13/2023]
Affiliation(s)
- W A Deutsch
- Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, USA
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34
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Hansen WK, Deutsch WA, Yacoub A, Xu Y, Williams DA, Kelley MR. Creation of a fully functional human chimeric DNA repair protein. Combining O6-methylguanine DNA methyltransferase (MGMT) and AP endonuclease (APE/redox effector factor 1 (Ref 1)) DNA repair proteins. J Biol Chem 1998; 273:756-62. [PMID: 9422728 DOI: 10.1074/jbc.273.2.756] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
A dose-limiting toxicity of certain chemotherapeutic alkylating agents is their toxic effects on nontarget tissues such as the bone marrow. To overcome the myelosuppression observed by chemotherapeutic alkylating agents, one approach is to increase the level of DNA repair proteins in hematopoietic stem and progenitor cells. Toward this goal, we have constructed a human fusion protein consisting of O6-methylguanine DNA methyltransferase coupled with an apurinic endonuclease, resulting in a fully functional protein for both O6-methylguanine and apurinic/apyrimidinic (AP) site repair as determined by biochemical analysis. The chimeric protein protected AP endonuclease-deficient Escherichia coli cells against methyl methanesulfonate and hydrogen peroxide (H2O2) damage. A retroviral construct expressing the chimeric protein also protected HeLa cells against 1,3-bis(2-chloroethyl)-1-nitrosourea and methyl methanesulfonate cytotoxicity either when these agents were used separately or in combination. Moreover, as predicted from previous analysis, truncating the amino 150 amino acids of the apurinic endonuclease portion of the O6-methylguanine DNA methyltransferase-apurinic endonuclease protein resulted in the retention of O6-methylguanine DNA methyltransferase activity but loss of all AP endonuclease activity. These results demonstrate that the fusion of O6-methylguanine DNA methyltransferase and apurinic endonuclease proteins into a combined single repair protein can result in a fully functional protein retaining the repair activities of the individual repair proteins. These and other related constructs may be useful for protection of sensitive tissues and, therefore, are candidate constructs to be tested in preclinical models of chemotherapy toxicity.
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Affiliation(s)
- W K Hansen
- Department of Pediatrics,Wells Center for Pediatric Research, Pennington Biomedical Research Center, Baton Rouge, Louisiana 70808, USA
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35
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Deutsch WA, Yacoub A, Jaruga P, Zastawny TH, Dizdaroglu M. Characterization and mechanism of action of Drosophila ribosomal protein S3 DNA glycosylase activity for the removal of oxidatively damaged DNA bases. J Biol Chem 1997; 272:32857-60. [PMID: 9407063 DOI: 10.1074/jbc.272.52.32857] [Citation(s) in RCA: 71] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
We recently demonstrated that Drosophila ribosomal protein S3 specifically cleaved duplex oligodeoxynucleotides at sites of 7,8-dihydro-8-oxoguanine (8-oxoGua), presumably due to S3 protein possessing an N-glycosylase activity that is associated with its known apurinic/apyrimidinic (AP) lyase activity. Here we show, using DNA substrates prepared by gamma-irradiation under N2O and analyzed by gas chromatography/isotope-dilution mass spectrometry, that S3 protein efficiently liberates 8-oxoGua as a free base from the damaged DNA substrate. Of the 15 additional modified bases present in the DNA substrate, the only other one acted on by S3 protein was 2,6-diamino-4-hydroxy-5-formamidopyrimidine (FapyGua). Specificity constants measured for the removal of 8-oxoGua and FapyGua indicate that S3 protein has a similar preference for both of these modified purines. Having established that S3 protein contains an N-glycosylase activity, we next examined the repair of duplex oligonucleotides containing 8-oxoGua (8-oxoGua-37-mer) positioned opposite Cyt, Gua, Thy, or Ade. Significant cleavage of the 8-oxoGua-37-mer was only detected for an opposing Cyt. Moreover, we show that an imino covalent enzyme-substrate intermediate is formed between S3 protein and 8-oxoGua-37-mer, a result similar to other DNA repair enzymes that catalyze N-glycosylase/AP lyase-type reactions at sites of DNA damage.
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Affiliation(s)
- W A Deutsch
- Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, Louisiana 70808, USA.
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36
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Yacoub A, Kelley MR, Deutsch WA. The DNA repair activity of human redox/repair protein APE/Ref-1 is inactivated by phosphorylation. Cancer Res 1997; 57:5457-9. [PMID: 9407949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The human DNA repair protein apurinic/apyrimidinic endonuclease (APE) is a dual-function protein that has important roles in both the repair of baseless sites that arise in DNA and in regulating the redox state of a number of proteins (Ref-1). Although previous attention has been focused on how the human APE/Ref-1 gene may be regulated at the DNA level, we have instead examined if APE/Ref-1 is phosphorylated, and if so how it may affect DNA repair activity. We demonstrate here that APE/Ref-1 is indeed a substrate for phosphorylation by the serine/threonine casein kinases (CK) I and II and protein kinase C. Notably, although phosphorylation by CKI and protein kinase C had no effect whatsoever on the ability of APE/Ref-1 to act at abasic sites in DNA, phosphorylation by CKII completely abolished DNA repair activity. That phosphorylation was responsible for the loss of abasic repair activity was concluded from experiments showing that inactive APE/Ref-1 could be reversed to an active DNA repair protein with phosphatase treatment. These results may help to explain the mechanism by which APE/Ref-1 switches from one unrelated function to another.
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Affiliation(s)
- A Yacoub
- Pennington Biomedical Research Center, Louisiana State University, Baton Rouge 70808, USA
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Sandigursky M, Yacoub A, Kelley MR, Xu Y, Franklin WA, Deutsch WA. The yeast 8-oxoguanine DNA glycosylase (Ogg1) contains a DNA deoxyribophosphodiesterase (dRpase) activity. Nucleic Acids Res 1997; 25:4557-61. [PMID: 9358166 PMCID: PMC147074 DOI: 10.1093/nar/25.22.4557] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
The yeast OGG1 gene was recently cloned and shown to encode a protein that possesses N-glycosylase/AP lyase activities for the repair of oxidatively damaged DNA at sites of 7,8-dihydro-8-oxoguanine (8-oxoguanine). Similar activities have been identified for Escherichia coli formamidopyrimidine-DNA glycosylase (Fpg) and Drosophila ribosomal protein S3. Both Fpg and S3 also contain a deoxyribophosphodiesterase (dRpase) activity that removes 2-deoxyribose-5-phosphate at an incised 5' apurinic/apyrimidinic (AP) sites via a beta-elimination reaction. Drosophila S3 also has an additional activity that removes trans-4-hydroxy-2-pentenal-5-phosphate at a 3' incised AP site by a Mg2+-dependent hydrolytic mechanism. In view of the substrate similarities between Ogg1, Fpg and S3 at the level of base excision repair, we examined whether Ogg1 also contains dRpase activities. A glutathione S-transferase fusion protein of Ogg1 was purified and subsequently found to efficiently remove sugar-phosphate residues at incised 5' AP sites. Activity was also detected for the Mg2+-dependent removal of trans -4-hydroxy-2-pentenal-5-phosphate at 3' incised AP sites and from intact AP sites. Previous studies have shown that DNA repair proteins that possess AP lyase activity leave an inefficient DNA terminus for subsequent DNA synthesis steps associated with base excision repair. However, the results presented here suggest that in the presence of MgCl2, Ogg1 can efficiently process 8-oxoguanine so as to leave a one nucleotide gap that can be readily filled in by a DNA polymerase, and importantly, does not therefore require additional enzymes to process trans -4-hydroxy-2-pentenal-5-phosphate left at a 3' terminus created by a beta-elimination catalyst.
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Affiliation(s)
- M Sandigursky
- Department of Radiology, Albert Einstein College of Medicine, Bronx, NY 10461, USA
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Bonanome A, Yacoub A, Bianco G, Lusiani L, Visonà A, Pesavento R, Pagnan A. 2.P.270 Lower oxidizability of LDL in elderly subjects with no evidence of carotid atherosclerosis. Atherosclerosis 1997. [DOI: 10.1016/s0021-9150(97)88907-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Sandigursky M, Yacoub A, Kelley MR, Deutsch WA, Franklin WA. The Drosophila ribosomal protein S3 contains a DNA deoxyribophosphodiesterase (dRpase) activity. J Biol Chem 1997; 272:17480-4. [PMID: 9211893 DOI: 10.1074/jbc.272.28.17480] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.7] [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] Open
Abstract
The Drosophila ribosomal protein S3 has been previously demonstrated to cleave DNA containing 8-oxoguanine residues and has also been found to contain an associated apurinic/apyrimidinic (AP) lyase activity that cleaves phosphodiester bonds via a beta, delta-elimination reaction. The activity of this protein on DNA substrates containing incised AP sites was examined. A glutathione S-transferase fusion protein of S3 was found to efficiently remove sugar-phosphate residues from DNA substrates containing 5'-incised AP sites as well as from DNA substrates containing 3'-incised sites. Removal of 2-deoxyribose-5-phosphate as 4-hydroxy-2-pentenal-5-phosphate from a substrate containing 5'-incised AP sites occurred via a beta-elimination reaction, as indicated by reaction of the released sugar-phosphate products with sodium thioglycolate. The reaction for the removal of 4-hydroxy-2-pentenal-5-phosphate from the substrate containing 3'-incised AP sites was dependent on the presence of the Mg2+ cation. These findings suggest that the S3 ribosomal protein may function in several steps of the DNA base excision repair pathway in eukaryotes and may represent an important DNA repair function for the repair of oxidative and ionizing radiation-induced DNA damage.
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Affiliation(s)
- M Sandigursky
- Department of Radiology, Albert Einstein College of Medicine, Bronx, New York 10461, USA
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Abstract
A gene encoding the alpha-tubulin of Candida albicans has been cloned and characterized. Nucleotide sequence analysis reveals the presence of an intron within the structural gene and predicts the synthesis of a polypeptide of 448 amino acid residues. Comparison of nucleotide and amino acid sequences with the Saccharomyces cerevisiae alpha-tubulin encoding genes shows a 75% homology and about 92% similarity respectively. In contrast to S. cerevisiae, C. albicans appears to possess only one gene for alpha-tubulin which is able to functionally complement a S. cerevisiae cold-sensitive tub1 mutant.
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Affiliation(s)
- S Daly
- Department of Animal Biology and Genetics, University of Florence, Firenze, Italy
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Abstract
Drosophila ribosomal protein PO was overexpressed in Escherichia coli to allow for its purification, biochemical characterization and to generate polyclonal antibodies for Western analysis. Biochemical tests were originally performed to see if overexpressed PO contained DNase activity similar to that recently reported for the apurinic/apyrimidinic (AP) lyase activity associated with Drosophila ribosomal protein S3. The overexpressed ribosomal protein was subsequently found to act on AP DNA, producing scissions that were in this case 5' of a baseless site instead of 3', as has been observed for S3. As a means of confirming that the source of AP endonuclease activity was in fact due to PO, glutathione S-transferase (GST) fusions containing a Factor Xa cleavage site between GST and PO were constructed, overexpressed in an E.coli strain defective for the major 5'-acting AP endonucleases and the fusions purified using glutathione-agarose affinity column chromatography. Isolated fractions containing purified GST-PO fusion proteins were subsequently found to have authentic AP endonuclease activity. Moreover, glutathione-agarose was able to deplete AP endonuclease activity from GST-PO fusion protein preparations, whereas the resin was ineffective in lowering DNA repair activity for PO that had been liberated from the fusion construct by Factor Xa cleavage. These results suggested that PO was a multifunctional protein with possible roles in DNA repair beyond its known participation in protein translation. In support of this notion, tests were performed that show that GST-PO, but not GST, was able to rescue an E.coli mutant lacking the major 5'-acting AP endonucleases from sensitivity to an alkylating agent. We furthermore show that GST-PO can be located in both the nucleus and ribosomes. Its nuclear location can be further traced to the nuclear matrix, thus placing PO in a subcellular location where it could act as a DNA repair protein. Other roles beyond DNA repair seem possible, however, since GST-PO also exhibited significant nuclease activity for both single- and double-stranded DNA.
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Affiliation(s)
- A Yacoub
- Pennington Biomedical Research Center, Baton Rouge, LA 70808, USA
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Yacoub A, Augeri L, Kelley MR, Doetsch PW, Deutsch WA. A Drosophila ribosomal protein contains 8-oxoguanine and abasic site DNA repair activities. EMBO J 1996; 15:2306-12. [PMID: 8641296 PMCID: PMC450156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
Ionizing radiation and normal cellular respiration form reactive oxygen species that damage DNA and contribute to a variety of human disorders including tumor promotion and carcinogenesis. A major product of free radical DNA damage is the formation of 8-oxoguanine, which is a highly mutagenic base modification produced by oxidative stress. Here, Drosophila ribosomal protein S3 is shown to cleave DNA containing 8-oxoguanine residues efficiently, The ribosomal protein also contains an associated apurinic/apyrimidinic (AP) lyase activity, cleaving phosphodiester bonds via a beta,delta elimination reaction. The significance of this DNA repair activity acting on 8-oxoguanine is shown by the ability of S3 to rescue the H2O2 sensitivity of an Escherichia coli mutM strain (defective for the repair of 8-oxoguanine) and to abolish completely the mutator phenotype of mutM caused by 8-oxoguanine-mediated G-->T transversions. The ribosomal protein is also able to rescue the alkylation sensitivity of an E.coli mutant deficient for the AP endonuclease activities associated with exonuclease III (xth) and endonuclease IV (nfo), indicating for the first time that an AP lyase can represent a significant source of DNA repair activity for the repair of AP sites. These results raise the possibility that DNA repair may be associated with protein translation.
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Affiliation(s)
- A Yacoub
- Department of Biochemistry, Louisiana State University, Baton Rouge, LA 70803, USA
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Yacoub A, Augeri L, Kelley MR, Doetsch PW, Deutsch WA. A Drosophila ribosomal protein contains 8-oxoguanine and abasic site DNA repair activities. EMBO J 1996. [DOI: 10.1002/j.1460-2075.1996.tb00584.x] [Citation(s) in RCA: 85] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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Yacoub A, Davies R, Neale E. Ovarian pregnancy following in vitrofertilisation and embryo transfer for bilateral tubal blockage. J OBSTET GYNAECOL 1996. [DOI: 10.3109/01443619609020742] [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: 11/13/2022]
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45
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Abstract
Denatured type-I collagen was found to bind to Chlamydia trachomatis elementary bodies (EBs) in a time-dependent and specific manner. Specificity was tested by having a large excess of other proteins present in the binding mixture. Only denatured type-I collagen efficiently competed for binding. Radiolabelled fibronectin did not bind under the test conditions used. The binding was temperature-dependent and the interaction increased at the melting temperature of the collagen. Evidence was found for two binding sites: one with high affinity (Kd 3.3 x 10(-9)) and one with low affinity (Kd 1.7 x 10(-7)), with an estimated number of binding sites per EB of 590 and 2900, respectively. The interaction between C. trachomatis and collagen may also be relevant in vivo, since 50% binding occurred at 37 degrees C. The binding to denatured collagen may be of importance for the development of sexually acquired reactive arthritis.
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Affiliation(s)
- G Fröman
- Institute of Clinical Bacteriology, University of Uppsala, Sweden
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46
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Abstract
The nucleotide (nt) sequence of the dihydrofolate reductase (DHFR)-encoding gene (DFR1) of Candida albicans was determined. The gene contains an open reading frame of 576 nt, coding for a protein of 192 amino acid (aa) residues (calculated M(r) 22,222), that is 38.5 and 31% similar to the Saccharomyces cerevisiae and human enzymes, respectively. The first 36 residues, at the N terminus, of the deduced aa sequence are identical to those determined by sequencing of the purified enzyme from C. albicans. Putative transcription start points were also determined. Restriction-fragment-length polymorphism analysis of the DFR1 chromosomal region suggests the presence of a single copy of the gene per haploid genome and shows a limited variability among the different C. albicans strains tested.
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Affiliation(s)
- S Daly
- Department of Animal Biology and Genetics, University of Florence, Italy
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Yacoub A, Lindahl P, Rubin K, Wendel M, Heinegård D, Rydén C. Purification of a bone sialoprotein-binding protein from Staphylococcus aureus. Eur J Biochem 1994; 222:919-25. [PMID: 8026501 DOI: 10.1111/j.1432-1033.1994.tb18940.x] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Bone sialoprotein (BSP) is selectively bound by Staphylococcus aureus cells isolated from patients suffering from infections of bone and joint tissues [Rydén C., Maxe, I., Franzén, A., Ljungh, A., Heinegård, D. & Rubin, K. (1987) Lancet II, 515]. We now report on the purification of a cell-wall protein from Staphylococcus aureus, strain O24, that possesses affinity for bone sialoprotein. Staphylococcal cell-wall components with capacity to inhibit binding of 125I-labeled BSP to staphylococcal cells were solubilized with LiCl (1.0 M, pH 5.0). Preparative SDS/PAGE and protein-overlay experiments revealed that inhibitory activity present in LiCl extracts resided in a fraction of polypeptides with M(r) 75,000-110,000. Staphylococcal proteins solubilized with LiCl were chromatographed on a Mono-Q anion-exchange column. Inhibitory activity was eluted at 0.6-0.8 M NaCl and could be further purified by affinity chromatography on BSP-Sepharose. Elution of the affinity matrix with 0.1 M glycine, pH 3.0, specifically eluted inhibitory activity. Analysis by SDS/PAGE revealed a single M(r) 97,000 polypeptide in the eluate. The purified M(r) 97,000 protein bound BSP in protein-overlay experiments. LiCl extracts from S. aureus, strain E514 or Staphylococcus epidermidis, strain 7686, both lacking the capacity to bind BSP did not contain the M9r) 97,000 protein. Our data demonstrate the presence of a S. aureus cell-surface BSP-binding protein. This protein could be involved in bacterial tropism in osteomyelitis.
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Affiliation(s)
- A Yacoub
- Department of Medical and Physiological Chemistry, University of Uppsala, Sweden
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48
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Abstract
Staphylococcus aureus arthritis is usually caused by bacteremia and is highly destructive. Controlled studies on septic arthritis in humans are difficult to perform, because the time of onset of the infection is unknown. Animal models of bacterial arthritis make it possible to control important variables in experimental studies. We present a mouse model of S. aureus arthritis in which the intravenous administration of 10(7) cells of S. aureus LS-1 induced arthritis or osteitis or both within 3 weeks in 80 to 90% of the mice. Signs of arthritis emerged within the first few days after the injection. An interesting finding was that the S. aureus strain used in this study binds bone sialoprotein, a glycoprotein known to be specifically localized to bone tissue. This new model of S. aureus arthritis enables the study of the kinetics of joint destruction and the host-bacterium relationship as well as therapeutical approaches to septic arthritis and osteomyelitis.
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Affiliation(s)
- T Bremell
- Department of Rheumatology and Clinical Bacteriology, University of Göteborg, Sweden
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49
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Rydén C, Yacoub A, Kvarnström A, Wadström T, Maxe I, Friman G, Rubin K. Detection of Staphylococcus aureus infection by enzyme-linked immunosorbent assay and immunoblotting, using high molecular weight staphylococcal proteins. FEMS Microbiol Immunol 1990; 2:65-73. [PMID: 2257163 DOI: 10.1111/j.1574-6968.1990.tb03502.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Two high molecular weight staphylococcal proteins, fibronectin-binding protein and a Mr 200,000 protein, were investigated as antigens for serodiagnosis of staphylococcal infections. Sera from patients with staphylococcal infections and from controls were subjected to immunoblot analysis with staphylococcal lysate proteins to identify staphylococcal antigens to which patients with staphylococcal infections specifically exhibited antibodies. One such protein was found in the Mr 200,000 region. This protein was purified and used as antigen in ELISA and compared with other antigens, namely fibronectin-binding protein(s) (FNBP, Mr 185,000), alpha-toxin and teichoic acid. Sera from patients with staphylococcal infections contained antibodies to the high molecular weight proteins in higher titers than sera from patients with non-staphylococcal infections or healthy subjects. Based on their amino-acid compositions and different abilities to bind fibronectin it was concluded that the Mr 200,000 protein and FNBP were not identical.
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Affiliation(s)
- C Rydén
- Department of Infectious Diseases, University Hospital, Uppsala, Sweden
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50
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Rydén C, Yacoub A, Hirsch G, Wendel M, Oldberg A, Ljungh A. Binding of bone sialoprotein to Staphylococcus epidermidis isolated from a patient with chronic recurrent multifocal osteomyelitis. J Infect Dis 1990; 161:814-5. [PMID: 2319176 DOI: 10.1093/infdis/161.4.814] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
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