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Ben Mansour A, Daghfous H, Ben Saad S, Slim A, Bellali H, Tritar F. Drug related severe anaphylaxis investigation: A Tunisian retrospective study. Revue Française d'Allergologie 2023. [DOI: 10.1016/j.reval.2023.103309] [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: 02/10/2023]
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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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Hedhli A, Slim A, Mjid M, Ouachi Y, Kacem M, Cheikh Rouhou S, Merai S, Toujani S, Dhahri B. [Nutritional status and dietary intake in patients with chonic obstructive pulmonary disease]. Rev Mal Respir 2021; 38:689-697. [PMID: 34092448 DOI: 10.1016/j.rmr.2021.04.017] [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: 01/10/2021] [Accepted: 04/13/2021] [Indexed: 11/30/2022]
Abstract
INTRODUCTION Undernutrition is a predictor of mortality in chronic obstructive pulmonary disease (COPD). The objectives of our study were to assess nutritional intake in COPD and to study its relationship with disease severity. METHODS A cross-sectional study that included 66 patients followed for COPD. Patients included had a body composition study and a respiratory and nutritional assessment. RESULTS The mean age of the population was 66±9 years. The lean body mass index (LMI) was reduced in 26.1% of patients. It was significantly associated with the GOLD group (P=0.04) and significantly correlated with the forced expiratory volume in the first second (FEV1) (P=0.02) and the distance covered during the six-minute walk test (TM6) (P=0.01). A significant difference was found between the caloric intakes and the different GOLD groups (P=0.04). Mean intakes of calories (P=0.002; r=0.07), protein (P=0.01; r=0.16), carbohydrates (P=0.02; r=0.2) and iron (P=0.01; r=0.13) were significantly correlated with the TM6 results. Caloric intake was significantly correlated with LMI (P=0.01; r=0.16), body mass index (P=0.04; r=0.12), FEV1 (P=0.04; r=-0.12) and GOLD stage (0.002). Similarly, protein intake was significantly correlated with LMI (P=0.001; r=0.11), body mass index (P=0.02; r=0.16), FEV1(%) (P=0.001; r=-0.16) and GOLD stage (P=0.002). CONCLUSION Undernutrition in COPD is caused by decreased food intake and increased resting energy expenditure. Adequate intakes of glucose, protein, fibers, vitamins and zinc are associated with improved ventilatory function.
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Affiliation(s)
- A Hedhli
- Service de pneumologie, faculté de médecine de Tunis, université Tunis El Manar, CHU la Rabta, rue Jbel Lakhdar La Rabta, LR18SP02, 1007 Tunis, Tunisie
| | - A Slim
- Service de pneumologie, faculté de médecine de Tunis, université Tunis El Manar, CHU la Rabta, rue Jbel Lakhdar La Rabta, LR18SP02, 1007 Tunis, Tunisie.
| | - M Mjid
- Service de pneumologie, faculté de médecine de Tunis, université Tunis El Manar, CHU la Rabta, rue Jbel Lakhdar La Rabta, LR18SP02, 1007 Tunis, Tunisie
| | - Y Ouachi
- Service de pneumologie, faculté de médecine de Tunis, université Tunis El Manar, CHU la Rabta, rue Jbel Lakhdar La Rabta, LR18SP02, 1007 Tunis, Tunisie
| | - M Kacem
- Service de pneumologie, faculté de médecine de Tunis, université Tunis El Manar, CHU la Rabta, rue Jbel Lakhdar La Rabta, LR18SP02, 1007 Tunis, Tunisie
| | - S Cheikh Rouhou
- Service de pneumologie, faculté de médecine de Tunis, université Tunis El Manar, CHU la Rabta, rue Jbel Lakhdar La Rabta, LR18SP02, 1007 Tunis, Tunisie
| | - S Merai
- Service de pneumologie, faculté de médecine de Tunis, université Tunis El Manar, CHU la Rabta, rue Jbel Lakhdar La Rabta, LR18SP02, 1007 Tunis, Tunisie
| | - S Toujani
- Service de pneumologie, faculté de médecine de Tunis, université Tunis El Manar, CHU la Rabta, rue Jbel Lakhdar La Rabta, LR18SP02, 1007 Tunis, Tunisie
| | - B Dhahri
- Service de pneumologie, faculté de médecine de Tunis, université Tunis El Manar, CHU la Rabta, rue Jbel Lakhdar La Rabta, LR18SP02, 1007 Tunis, Tunisie
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Slim A, Hedhli A, Ouahchi Y, Toujani S, Cheikh Rouhou S, Hadj Taeib S, Mjid M, Merai S, Feki M. [Testosterone and chronic obstructive pulmonary disease]. Rev Mal Respir 2020; 37:790-799. [PMID: 33067077 DOI: 10.1016/j.rmr.2020.08.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Accepted: 08/19/2020] [Indexed: 10/23/2022]
Abstract
INTRODUCTION Testosterone level has been shown to be associated with respiratory function and loss of lean body mass in patients with chronic obstructive pulmonary disease (COPD). The aim of this study was to assess the relationship between testosterone level and functional respiratory parameters during COPD. METHODS We conducted a cross-sectional study that included 95 male patients with stable COPD. Functional tests (body plethysmography, six-minute walk test (6MWT), arterial blood gas) were performed in all patients and serum levels of testosterone, prolactin, FSH, LH and C-reactive protein were determined. Lean body mass was measured using bioelectric impedance. RESULTS The average age was 63.78±8.90years. COPD was classified as stage 3 in 38% of cases and stage 4 in 11% of cases, group C in 10% of cases and group D in 18% of cases. The average testosterone was 20.87±8.60nmol/L. A significant positive correlation was found between FEV1 (P=0.005), FVC (P=0.005), FEV1/FVC ratio (P=0.001), lean mass index (P=0.021), and testosterone. However, testosterone was not correlated with 6MWT or blood gas parameters. Similarly, it was not correlated with FSH, LH, prolactin and C-reactive protein. CONCLUSION This study found that serum testosterone level was associated with lung function and lean mass during COPD. Further investigations are required to better evaluate the relationship between COPD and serum testosterone levels and the effect of androgen substitution in lung function.
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Affiliation(s)
- A Slim
- Service de pneumologie CHU la Rabta, faculté de médecine de Tunis, université Tunis El Manar, LR18SP02, code postal : 1007, rue Jbel Lakhdar, La Rabta Jebbari, Tunis, Tunisie.
| | - A Hedhli
- Service de pneumologie CHU la Rabta, faculté de médecine de Tunis, université Tunis El Manar, LR18SP02, code postal : 1007, rue Jbel Lakhdar, La Rabta Jebbari, Tunis, Tunisie
| | - Y Ouahchi
- Service de pneumologie CHU la Rabta, faculté de médecine de Tunis, université Tunis El Manar, LR18SP02, code postal : 1007, rue Jbel Lakhdar, La Rabta Jebbari, Tunis, Tunisie
| | - S Toujani
- Service de pneumologie CHU la Rabta, faculté de médecine de Tunis, université Tunis El Manar, LR18SP02, code postal : 1007, rue Jbel Lakhdar, La Rabta Jebbari, Tunis, Tunisie
| | - S Cheikh Rouhou
- Service de pneumologie CHU la Rabta, faculté de médecine de Tunis, université Tunis El Manar, LR18SP02, code postal : 1007, rue Jbel Lakhdar, La Rabta Jebbari, Tunis, Tunisie
| | - S Hadj Taeib
- Service de pneumologie CHU la Rabta, faculté de médecine de Tunis, université Tunis El Manar, LR18SP02, code postal : 1007, rue Jbel Lakhdar, La Rabta Jebbari, Tunis, Tunisie
| | - M Mjid
- Service de pneumologie CHU la Rabta, faculté de médecine de Tunis, université Tunis El Manar, LR18SP02, code postal : 1007, rue Jbel Lakhdar, La Rabta Jebbari, Tunis, Tunisie
| | - S Merai
- Service de pneumologie CHU la Rabta, faculté de médecine de Tunis, université Tunis El Manar, LR18SP02, code postal : 1007, rue Jbel Lakhdar, La Rabta Jebbari, Tunis, Tunisie
| | - M Feki
- Service de pneumologie CHU la Rabta, faculté de médecine de Tunis, université Tunis El Manar, LR18SP02, code postal : 1007, rue Jbel Lakhdar, La Rabta Jebbari, Tunis, Tunisie
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Viganò L, Cimino M, Aldrighetti L, Ferrero A, Cillo U, Guglielmi A, Ettorre GM, Giuliante F, Dalla Valle R, Mazzaferro V, Jovine E, De Carlis L, Calise F, Torzilli G, Ratti F, Gringeri E, Russolillo N, Levi Sandri GB, Ardito F, Boggi U, Gruttadauria S, Di Benedetto F, Rossi GE, Berti S, Ceccarelli G, Vincenti L, Belli G, Zamboni F, Coratti A, Mezzatesta P, Santambrogio R, Navarra G, Giuliani A, Pinna AD, Parisi A, Colledan M, Slim A, Antonucci A, Grazi GL, Frena A, Sgroi G, Brolese A, Morelli L, Floridi A, Patriti A, Veneroni L, Boni L, Maida P, Griseri G, Filauro M, Guerriero S, Tisone G, Romito R, Tedeschi U, Zimmitti G. Multicentre evaluation of case volume in minimally invasive hepatectomy. Br J Surg 2019; 107:443-451. [PMID: 32167174 DOI: 10.1002/bjs.11369] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Revised: 06/11/2019] [Accepted: 08/23/2019] [Indexed: 02/05/2023]
Abstract
Abstract
Background
Surgical outcomes may be associated with hospital volume and the influence of volume on minimally invasive liver surgery (MILS) is not known.
Methods
Patients entered into the prospective registry of the Italian Group of MILS from 2014 to 2018 were considered. Only centres with an accrual period of at least 12 months and stable MILS activity during the enrolment period were included. Case volume was defined by the mean number of minimally invasive liver resections performed per month (MILS/month).
Results
A total of 2225 MILS operations were undertaken by 46 centres; nine centres performed more than two MILS/month (1376 patients) and 37 centres carried out two or fewer MILS/month (849 patients). The proportion of resections of anterolateral segments decreased with case volume, whereas that of major hepatectomies increased. Left lateral sectionectomies and resections of anterolateral segments had similar outcome in the two groups. Resections of posterosuperior segments and major hepatectomies had higher overall and severe morbidity rates in centres performing two or fewer MILS/month than in those undertaking a larger number (posterosuperior segments resections: overall morbidity 30·4 versus 18·7 per cent respectively, and severe morbidity 9·9 versus 4·0 per cent; left hepatectomy: 46 versus 22 per cent, and 19 versus 5 per cent; right hepatectomy: 42 versus 34 per cent, and 25 versus 15 per cent).
Conclusion
A volume–outcome association existed for minimally invasive hepatectomy. Complex and major resections may be best managed in high-volume centres.
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Affiliation(s)
- L Viganò
- Department of Hepatobiliary and General Surgery, Humanitas Clinical and Research Centre, Humanitas University, Rozzano, Italy
| | - M Cimino
- Department of Hepatobiliary and General Surgery, Humanitas Clinical and Research Centre, Humanitas University, Rozzano, Italy
| | - L Aldrighetti
- Department of Surgery, Ospedale San Raffaele, Milan, Italy
| | - A Ferrero
- Department of Digestive and Hepatobiliary Surgery, Mauriziano Umberto I Hospital, Turin, Italy
| | - U Cillo
- Hepato-Biliary and Liver Transplantation Unit, University of Padua, Padua, Italy
| | - A Guglielmi
- Department of Surgery, Division of General and Hepatobiliary Surgery, G.B. Rossi University Hospital, University of Verona, Verona, Italy
| | - G M Ettorre
- Division of General Surgery and Liver Transplantation, San Camillo Hospital, Rome, Italy
| | - F Giuliante
- Hepatobiliary Surgery Unit, A. Gemelli Hospital, Università Cattolica del Sacro Cuore, Rome, Italy
| | - R Dalla Valle
- Department of Surgery, University Hospital of Parma, Parma, Italy
| | - V Mazzaferro
- Department of Gastrointestinal Surgery and Liver Transplantation, Fondazione IRCCS Istituto Nazionale Tumori, University of Milan, Milan, Italy
| | - E Jovine
- Department of Surgery, Maggiore Hospital, Bologna, Italy
| | - L De Carlis
- Department of General Surgery and Transplantation, ASST Grande Ospedale Metropolitano Niguarda, Milan, Italy
| | - F Calise
- Department of Hepatopancreatobiliary Surgery, Pinetagrande Hospital, Castelvolturno, Italy
| | - G Torzilli
- Department of Hepatobiliary and General Surgery, Humanitas Clinical and Research Centre, Humanitas University, Rozzano, Italy
| | - F Ratti
- Ospedale San Raffaele, Milan
| | | | | | | | | | - U Boggi
- Azienda Ospedaliero Universitaria (AOU) Pisana, Pisa
| | - S Gruttadauria
- Istituto Mediterraneo per i Trapianti e Terapie ad Alta Specializzazione, Palermo
| | | | - G E Rossi
- Ospedale Maggiore Policlinico, Milan
| | - S Berti
- Ospedale Civile S. Andrea, La Spezia
| | | | | | - G Belli
- Ospedale Santa Maria di Loreto Nuovo, Naples
| | | | | | | | | | | | | | - A D Pinna
- Policlinico Sant'Orsola Malpighi, Bologne
| | | | | | - A Slim
- AO Desio e Vimercate, Vimercate
| | | | - G L Grazi
- Istituto Nazionale Tumori Regina Elena, Rome
| | | | - G Sgroi
- AO Treviglio-Caravaggio, Treviglio
| | | | | | | | - A Patriti
- Ospedale San Matteo degli Infermi, Spoleto
| | | | - L Boni
- AOU Fondazione Macchi, Varese
| | - P Maida
- Ospedale Villa Betania, Naples
| | | | | | | | | | - R Romito
- AOU Maggiore della Carità, Novara
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Slim A, Piarulli L, Chennaoui Kourda H, Rouaissi M, Robbana C, Chaabane R, Pignone D, Montemurro C, Mangini G. Genetic Structure Analysis of a Collection of Tunisian Durum Wheat Germplasm. Int J Mol Sci 2019; 20:ijms20133362. [PMID: 31323925 PMCID: PMC6651592 DOI: 10.3390/ijms20133362] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Revised: 06/26/2019] [Accepted: 07/04/2019] [Indexed: 12/13/2022] Open
Abstract
The Tunisian durum wheat germplasm includes modern cultivars and traditional varieties that are still cultivated in areas where elite cultivars or intensive cultivation systems are not suitable. Within the frame of a collection program of the National Gene Bank of Tunisia (NGBT), durum wheat germplasm was collected from different Tunisian agro-ecological zones. The collected samples were studied using simple sequence repeats (SSRs) markers to explore the genetic diversity and evaluate the genetic structure in Tunisian germplasm. The results demonstrated significant diversity in the Tunisian durum wheat germplasm, with clear differentiation between traditional varieties and modern cultivars. The population structure analysis allowed the identification of five subpopulations, two of which appear to be more strongly represented in germplasm collected in central and southern Tunisia, where environmental conditions at critical development phases of the plant are harsher. Moreover these subpopulations are underrepresented in modern varieties, suggesting that traits of adaptation useful for breeding more resilient varieties might be present in central and southern germplasm. Moreover, our results will support, the activity of in situ on farm conservation of Tunisian durum wheat germplasm started by the National Gene Bank of Tunisia along with the ex situ approach.
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Affiliation(s)
- Amine Slim
- National Gene Bank of Tunisia, Boulevard du Leader Yasser Arafat Z. I Charguia 1, Tunis 1080, Tunisia.
| | - Luciana Piarulli
- SINAGRI S.r.l., Spin Off of the University of Bari Aldo Moro, Via Amendola 165/A, 70126 Bari, Italy
| | - Houda Chennaoui Kourda
- National Gene Bank of Tunisia, Boulevard du Leader Yasser Arafat Z. I Charguia 1, Tunis 1080, Tunisia
| | - Mustapha Rouaissi
- Biotechnology and Physiology Laboratory, National Agronomic Research Institute of Tunisia (INRAT), Hedi Karray Street, Ariana 2049, Tunisia
| | - Cyrine Robbana
- National Gene Bank of Tunisia, Boulevard du Leader Yasser Arafat Z. I Charguia 1, Tunis 1080, Tunisia
| | - Ramzi Chaabane
- Biotechnology and Physiology Laboratory, National Agronomic Research Institute of Tunisia (INRAT), Hedi Karray Street, Ariana 2049, Tunisia
| | - Domenico Pignone
- Institute of Biosciences and Bioresources of the National Research Council (IBBR-CNR), Via Amendola 165/A, 70126 Bari, Italy
| | - Cinzia Montemurro
- Department of Soil, Plant and Food Sciences (DiSSPA), Sect. Genetics and Plant Breeding, University of Bari Aldo Moro, Via Amendola 165/A, 70126 Bari, Italy
| | - Giacomo Mangini
- Department of Soil, Plant and Food Sciences (DiSSPA), Sect. Genetics and Plant Breeding, University of Bari Aldo Moro, Via Amendola 165/A, 70126 Bari, Italy.
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Slim A, Bachouch I, Belloumi N, Ammari S, Chermiti F, Fenniche S. Les facteurs prédictifs de la fréquence et de la sévérité des exacerbations aiguës au cours des dilatations des bronches. Rev Mal Respir 2019. [DOI: 10.1016/j.rmr.2018.10.313] [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: 11/26/2022]
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8
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Slim A, Hedhli A, Toujani S, Teboubi A, Cheikh Rouhou S, Ouahchi Y, Mjid M, Merai S. Les facteurs associés à une durée d’hospitalisation prolongée chez les patients admis pour exacerbation d’asthme. Rev Mal Respir 2019. [DOI: 10.1016/j.rmr.2018.10.393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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9
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Hedhli A, Slim A, Cheikh Rouhou S, Toujeni S, Teboubi A, Ouahchi Y, Mjid M, Merai S. Relation entre le statut nutritionnel et les capacités à l’exercice au cours de la bronchopneumopathie chronique obstructive. Rev Mal Respir 2019. [DOI: 10.1016/j.rmr.2018.10.230] [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: 10/27/2022]
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10
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Slim A, Hedhli A, Mjid M, Cheikh Rouhou S, Teboubi A, Ouahchi Y, Toujeni S, Merai S. Évaluation de l’impact de la distension thoracique sur les paramètres cliniques et fonctionnels et son lien avec l’inflammation systémique au cours de la bronchopneumopathie chronique obstructive. Rev Mal Respir 2019. [DOI: 10.1016/j.rmr.2018.10.228] [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: 10/27/2022]
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11
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Hamzaoui Z, Ocampo-Sosa A, Maamar E, Fernandez Martinez M, Ferjani S, Hammami S, Harbaoui S, Genel N, Arlet G, Saidani M, Slim A, Boutiba-Ben Boubaker I, Martinez-Martinez L. An Outbreak of NDM-1-ProducingKlebsiella pneumoniae, Associated with OmpK35 and OmpK36 Porin Loss in Tunisia. Microb Drug Resist 2018; 24:1137-1147. [DOI: 10.1089/mdr.2017.0165] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Affiliation(s)
- Zaineb Hamzaoui
- Faculty of Medicine of Tunis—LR99ES09 Research Laboratory of Antimicrobial Resistance, University of Tunis El Manar, Tunis, Tunisia
- Faculty of Sciences of Bizerte, University of Carthage, Tunis, Tunisia
| | - Alain Ocampo-Sosa
- Service of Microbiology, University Hospital Marqués de Valdecilla-IDIVAL, Santander, Spain
| | - Elaa Maamar
- Faculty of Medicine of Tunis—LR99ES09 Research Laboratory of Antimicrobial Resistance, University of Tunis El Manar, Tunis, Tunisia
| | | | - Sana Ferjani
- Faculty of Medicine of Tunis—LR99ES09 Research Laboratory of Antimicrobial Resistance, University of Tunis El Manar, Tunis, Tunisia
- Faculty of Sciences of Bizerte, University of Carthage, Tunis, Tunisia
| | - Samia Hammami
- Faculty of Medicine of Tunis—LR99ES09 Research Laboratory of Antimicrobial Resistance, University of Tunis El Manar, Tunis, Tunisia
- Faculty of Sciences of Bizerte, University of Carthage, Tunis, Tunisia
| | - Sarra Harbaoui
- Faculty of Medicine of Tunis—LR99ES09 Research Laboratory of Antimicrobial Resistance, University of Tunis El Manar, Tunis, Tunisia
| | - Nathalie Genel
- Department of Bacteriology, Medical School, University Pierre et Marie Curie, Paris, France
| | - Guillaume Arlet
- Department of Bacteriology, Medical School, University Pierre et Marie Curie, Paris, France
| | - Mabrouka Saidani
- Faculty of Medicine of Tunis—LR99ES09 Research Laboratory of Antimicrobial Resistance, University of Tunis El Manar, Tunis, Tunisia
- Laboratory of Microbiology, Charles Nicolle Hospital, Tunis, Tunisia
| | - Amine Slim
- Faculty of Medicine of Tunis—LR99ES09 Research Laboratory of Antimicrobial Resistance, University of Tunis El Manar, Tunis, Tunisia
- Laboratory of Microbiology, Charles Nicolle Hospital, Tunis, Tunisia
| | - Ilhem Boutiba-Ben Boubaker
- Faculty of Medicine of Tunis—LR99ES09 Research Laboratory of Antimicrobial Resistance, University of Tunis El Manar, Tunis, Tunisia
- Laboratory of Microbiology, Charles Nicolle Hospital, Tunis, Tunisia
| | - Luis Martinez-Martinez
- Service of Microbiology, University Hospital Marqués de Valdecilla-IDIVAL, Santander, Spain
- Department of Molecular Biology, School of Medicine, University of Cantabria, Santander, Spain
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12
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Kanzari L, Ferjani S, Saidani M, Hamzaoui Z, Jendoubi A, Harbaoui S, Ferjani A, Rehaiem A, Boutiba Ben Boubaker I, Slim A. First report of extensively-drug-resistant Proteus mirabilis isolate carrying plasmid-mediated bla NDM-1 in a Tunisian intensive care unit. Int J Antimicrob Agents 2018; 52:906-909. [PMID: 29958975 DOI: 10.1016/j.ijantimicag.2018.06.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [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: 12/15/2017] [Revised: 05/15/2018] [Accepted: 06/16/2018] [Indexed: 10/28/2022]
Abstract
Emergence of the New Delhi metallo-β-lactamase (NDM-1), an Ambler class B metallo-β-lactamase able to hydrolyse all β-lactams except monobactams, constitutes a critical and increasingly important medical issue. The acquisition of blaNDM-1 is of particular concern for Proteus mirabilis, which is intrinsically resistant to tetracycline, tigecycline and colistin, as this will make clinical treatment extremely difficult. To the authors' knowledge, this is the first report of the blaNDM-1 gene in an extensively-drug-resistant P. mirabilis clinical isolate carrying plasmid-mediated resistance to carbapenems (blaNDM-1), cephalosporins (blaCMY-4), aminoglycosides (aph3 VIa and aph3 Ia) and fluoroquinolones (qnrA6).
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Affiliation(s)
- Lamia Kanzari
- Université de Tunis El Manar, Faculté de Médecine de Tunis, Laboratoire de Recherche "Résistance aux antibiotiques" LR99ES09, 1007, Tunis, Tunisie; Hôpital Charles Nicolle, Laboratoire de microbiologie, Tunis, Tunisie.
| | - Sana Ferjani
- Université de Tunis El Manar, Faculté de Médecine de Tunis, Laboratoire de Recherche "Résistance aux antibiotiques" LR99ES09, 1007, Tunis, Tunisie
| | - Mabrouka Saidani
- Université de Tunis El Manar, Faculté de Médecine de Tunis, Laboratoire de Recherche "Résistance aux antibiotiques" LR99ES09, 1007, Tunis, Tunisie; Hôpital Charles Nicolle, Laboratoire de microbiologie, Tunis, Tunisie
| | - Zeineb Hamzaoui
- Université de Tunis El Manar, Faculté de Médecine de Tunis, Laboratoire de Recherche "Résistance aux antibiotiques" LR99ES09, 1007, Tunis, Tunisie
| | - Ali Jendoubi
- Université de Tunis El Manar, Faculté de Médecine de Tunis, Laboratoire de Recherche "Résistance aux antibiotiques" LR99ES09, 1007, Tunis, Tunisie; Hôpital Charles Nicolle, Unité de réanimation médico-chirurgicale, Tunis, Tunisie
| | - Sarra Harbaoui
- Université de Tunis El Manar, Faculté de Médecine de Tunis, Laboratoire de Recherche "Résistance aux antibiotiques" LR99ES09, 1007, Tunis, Tunisie
| | - Asma Ferjani
- Université de Tunis El Manar, Faculté de Médecine de Tunis, Laboratoire de Recherche "Résistance aux antibiotiques" LR99ES09, 1007, Tunis, Tunisie; Hôpital Charles Nicolle, Laboratoire de microbiologie, Tunis, Tunisie
| | - Amel Rehaiem
- Université de Tunis El Manar, Faculté de Médecine de Tunis, Laboratoire de Recherche "Résistance aux antibiotiques" LR99ES09, 1007, Tunis, Tunisie; Hôpital Charles Nicolle, Laboratoire de microbiologie, Tunis, Tunisie
| | - Ilhem Boutiba Ben Boubaker
- Université de Tunis El Manar, Faculté de Médecine de Tunis, Laboratoire de Recherche "Résistance aux antibiotiques" LR99ES09, 1007, Tunis, Tunisie; Hôpital Charles Nicolle, Laboratoire de microbiologie, Tunis, Tunisie
| | - Amine Slim
- Université de Tunis El Manar, Faculté de Médecine de Tunis, Laboratoire de Recherche "Résistance aux antibiotiques" LR99ES09, 1007, Tunis, Tunisie; Hôpital Charles Nicolle, Laboratoire de microbiologie, Tunis, Tunisie
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13
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Mesrati I, Saidani M, Jemili M, Ferjeni S, Slim A, Boubaker IBB. Virulence determinants, biofilm production and antimicrobial susceptibility in Staphylococcus aureus causing device-associated infections in a Tunisian hospital. Int J Antimicrob Agents 2018; 52:922-929. [PMID: 29775684 DOI: 10.1016/j.ijantimicag.2018.05.004] [Citation(s) in RCA: 5] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Revised: 04/22/2018] [Accepted: 05/07/2018] [Indexed: 11/19/2022]
Abstract
Staphylococcus aureus is a clinically relevant pathogen that causes device-related infections (DRI) driven by several virulence factors. This study characterized S. aureus isolates involved in DRI in Tunisian patients. Forty consecutive S. aureus strains causing DRI and 47 randomly selected S. aureus strains causing non-device-related infections (NDRI) were collected. All strains were screened phenotypically for antibiotic susceptibility and biofilm forming ability. They were investigated for accessory gene regulator (agr) types, biofilm encoding genes (icaADBC), adhesins, leukotoxins, toxic shock toxin, enterotoxins and exotoxins encoding genes by polymerase chain reaction. Meticillin-resistant S. aureus (MRSA) strains were further characterized by staphylococcal cassette chromosome mec (SCCmec) typing. MRSA rates among DRI and NDRI isolates were 23% and 49% (P=0.02), respectively. The DRI isolates formed biofilm more frequently (n=32) than the NDRI isolates (n=28) (P=0.04), with predominance of the moderate biofilm producer category (P=0.027). All biofilm-positive isolates except four harboured icaADBC genes. A significant difference was observed between DRI and NDRI isolates for fnbA (53-77%), spa (45-26%), sdrD (80-55%) and sen (33-11%) genes. DRI strains were agrI (48%) and agrII (30%) types, whereas NDRI strains were agrI (36%) and agrIII (43%) types. SCCmec type IV was carried by 50% of MRSA isolates. This study highlights the virulence potential displayed by S. aureus isolated from DRI in comparison with NDRI.
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Affiliation(s)
- I Mesrati
- University of Tunis El Manar, Faculty of Medicine of Tunis, LR99ES09 Research Laboratory of Antimicrobial Resistance, Tunis, Tunisia.
| | - M Saidani
- University of Tunis El Manar, Faculty of Medicine of Tunis, LR99ES09 Research Laboratory of Antimicrobial Resistance, Tunis, Tunisia; Charles Nicolle Hospital, Laboratory of Microbiology, Tunis, Tunisia
| | - M Jemili
- University of Tunis El Manar, Faculty of Medicine of Tunis, LR99ES09 Research Laboratory of Antimicrobial Resistance, Tunis, Tunisia
| | - S Ferjeni
- University of Tunis El Manar, Faculty of Medicine of Tunis, LR99ES09 Research Laboratory of Antimicrobial Resistance, Tunis, Tunisia
| | - A Slim
- University of Tunis El Manar, Faculty of Medicine of Tunis, LR99ES09 Research Laboratory of Antimicrobial Resistance, Tunis, Tunisia; Charles Nicolle Hospital, Laboratory of Microbiology, Tunis, Tunisia
| | - I Boutiba-Ben Boubaker
- University of Tunis El Manar, Faculty of Medicine of Tunis, LR99ES09 Research Laboratory of Antimicrobial Resistance, Tunis, Tunisia; Charles Nicolle Hospital, Laboratory of Microbiology, Tunis, Tunisia
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14
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Hamzaoui Z, Ocampo-Sosa A, Fernandez Martinez M, Landolsi S, Ferjani S, Maamar E, Saidani M, Slim A, Martinez-Martinez L, Boutiba-Ben Boubaker I. Role of association of OmpK35 and OmpK36 alteration and bla ESBL and/or bla AmpC genes in conferring carbapenem resistance among non-carbapenemase-producing Klebsiella pneumoniae. Int J Antimicrob Agents 2018; 52:898-905. [PMID: 29621592 DOI: 10.1016/j.ijantimicag.2018.03.020] [Citation(s) in RCA: 76] [Impact Index Per Article: 12.7] [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: 12/15/2017] [Revised: 03/01/2018] [Accepted: 03/28/2018] [Indexed: 12/16/2022]
Abstract
In Klebsiella pneumoniae, loss of the two major outer membrane porins (OMPs) OmpK35 and OmpK36 confers resistance to carbapenems in strains producing extended-spectrum β-lactamases (ESBLs) or plasmid-mediated AmpC-type β-lactamases. This study investigated mechanisms responsible for carbapenem resistance in non-carbapenemase-producing K. pneumoniae (NCPK). All carbapenem-resistant Enterobacteriaceae (CRE) at Charles Nicolle Hospital (Tunis, Tunisia) were collected over a 6-year period (2010-2015). Among the 334 CRE strains collected, 44 (13.2%) were NCPK. MIC ranges for ertapenem, imipenem and meropenem were 1 to >32 mg/L, 0.125-8 mg/L and 0.125-32 mg/L, respectively. All strains showed a multidrug-resistant (MDR) phenotype and were negative for carbapenemase activity. None of the carbapenemase genes searched for were found. ESBL production was confirmed in all isolates except one [CTX-M-15 (n = 39) and SHV-5 (n = 4)]. Three isolates produce DHA-1 (associated with CTX-M-15 in two strains). Molecular fingerprints grouped the 44 NCPK isolates into seven clusters. In seven representative strains of these clusters, SDS-PAGE results showed that four isolates lacked the OmpK35 porin, one isolate lacked OmpK36 and two isolates lacked both OmpK35 and OmpK36. Sequencing of the corresponding porin genes showed amino acid insertions and deletions leading to early termination of translation, point mutations in the promoter region, or insertion sequences disrupting the gene coding sequence. Loss or deficiency of OMPs, coupled with ESBL and/or AmpC production, plays an important role in conferring carbapenem resistance in K. pneumoniae. Dissemination of these MDR bacteria in our hospital may create serious therapeutic problems in the future.
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Affiliation(s)
- Zaineb Hamzaoui
- University of Tunis El Manar, Faculty of Medicine of Tunis, LR99ES09 Research Laboratory 'Antimicrobial resistance', 1007 Tunis, Tunisia; University of Carthage, Faculty of Sciences of Bizerte, Tunis, Tunisia.
| | - Alain Ocampo-Sosa
- Service of Microbiology, University Hospital Marqués de Valdecilla-IDIVAL, Santander 39008, Spain
| | - Marta Fernandez Martinez
- Service of Microbiology, University Hospital Marqués de Valdecilla-IDIVAL, Santander 39008, Spain
| | - Sarrah Landolsi
- University of Tunis El Manar, Faculty of Medicine of Tunis, LR99ES09 Research Laboratory 'Antimicrobial resistance', 1007 Tunis, Tunisia
| | - Sana Ferjani
- University of Tunis El Manar, Faculty of Medicine of Tunis, LR99ES09 Research Laboratory 'Antimicrobial resistance', 1007 Tunis, Tunisia; University of Carthage, Faculty of Sciences of Bizerte, Tunis, Tunisia
| | - Elaa Maamar
- University of Tunis El Manar, Faculty of Medicine of Tunis, LR99ES09 Research Laboratory 'Antimicrobial resistance', 1007 Tunis, Tunisia
| | - Mabrouka Saidani
- University of Tunis El Manar, Faculty of Medicine of Tunis, LR99ES09 Research Laboratory 'Antimicrobial resistance', 1007 Tunis, Tunisia; Charles Nicolle Hospital, Laboratory of Microbiology, 1006 Tunis, Tunisia
| | - Amine Slim
- University of Tunis El Manar, Faculty of Medicine of Tunis, LR99ES09 Research Laboratory 'Antimicrobial resistance', 1007 Tunis, Tunisia; Charles Nicolle Hospital, Laboratory of Microbiology, 1006 Tunis, Tunisia
| | - Luis Martinez-Martinez
- Clinical Unit of Microbiology, University Hospital Reina Sofía, Córdoba, Spain; Department of Microbiology, University of Córdoba, Córdoba, Spain; Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC), Córdoba, Spain
| | - Ilhem Boutiba-Ben Boubaker
- University of Tunis El Manar, Faculty of Medicine of Tunis, LR99ES09 Research Laboratory 'Antimicrobial resistance', 1007 Tunis, Tunisia; Charles Nicolle Hospital, Laboratory of Microbiology, 1006 Tunis, Tunisia
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Hedhli A, Loued L, Mjid M, Mbarek N, Cheikh Rouhou S, Slim A, Ouahchi Y, Cherif J, Beji M, Toujani S. Relation entre la charge bacillaire et le profil radiologique et biologique dans la tuberculose pulmonaire. Rev Mal Respir 2018. [DOI: 10.1016/j.rmr.2017.10.375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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16
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Hedhli A, Slim A, Mjid M, Cheikhrouhou S, Mbarek N, Loued L, Ouahchi Y, Cherif J, Beji M, Toujeni S. Profil radioclinique et évolutif d’aspergillomes pulmonaires. Rev Mal Respir 2018. [DOI: 10.1016/j.rmr.2017.10.552] [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: 10/18/2022]
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17
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Hedhli A, Mjid M, Mbarek N, Loued L, Cheikhrouhou S, Slim A, Ouahchi Y, Cherif J, Beji M, Toujeni S. Association tuberculose pulmonaire active et cancer bronchopulmonaire. Rev Mal Respir 2018. [DOI: 10.1016/j.rmr.2017.10.408] [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: 10/18/2022]
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El Moussi A, Thomson MM, Delgado E, Cuevas MT, Nasr M, Abid S, Ben Hadj Kacem MA, Benaissa Tiouiri H, Letaief A, Chakroun M, Ben Jemaa M, Hamdouni H, Tej Dellagi R, Kheireddine K, Boutiba I, Pérez-Álvarez L, Slim A. Genetic Diversity of HIV-1 in Tunisia. AIDS Res Hum Retroviruses 2017; 33:77-81. [PMID: 27473255 DOI: 10.1089/aid.2016.0164] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
In this study, the genetic diversity of HIV-1 in Tunisia was analyzed. For this, 193 samples were collected in different regions of Tunisia between 2012 and 2015. A protease and reverse transcriptase fragment were amplified and sequenced. Phylogenetic analyses were performed through maximum likelihood and recombination was analyzed by bootscanning. Six HIV-1 subtypes (B, A1, G, D, C, and F2), 5 circulating recombinant forms (CRF02_AG, CRF25_cpx, CRF43_02G, CRF06_cpx, and CRF19_cpx), and 11 unique recombinant forms were identified. Subtype B (46.4%) and CRF02_AG (39.4%) were the predominant genetic forms. A group of 44 CRF02_AG sequences formed a distinct Tunisian cluster, which also included four viruses from western Europe. Nine viruses were closely related to isolates collected in other African or in European countries. In conclusion, a high HIV-1 genetic diversity is observed in Tunisia and the local spread of CRF02_AG is first documented in this country.
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Affiliation(s)
- Awatef El Moussi
- Unit Virology, Microbiology Laboratory, Charles Nicolle University Hospital, Tunis, Tunisia
- Laboratory of Research “resistance to antibiotics,” Faculty of Medicine of Tunis, Tunis, Tunisia
- The Global Fund to Fight AIDS, Tuberculosis and Malaria, Geneva, Switzerland
| | - Michael M. Thomson
- HIV Biology and Variability Unit, Centro Nacional de Microbiología, Instituto de Salud Carlos III, Madrid, Spain
| | - Elena Delgado
- HIV Biology and Variability Unit, Centro Nacional de Microbiología, Instituto de Salud Carlos III, Madrid, Spain
| | - María Teresa Cuevas
- HIV Biology and Variability Unit, Centro Nacional de Microbiología, Instituto de Salud Carlos III, Madrid, Spain
| | - Majda Nasr
- Unit Virology, Microbiology Laboratory, Charles Nicolle University Hospital, Tunis, Tunisia
| | - Salma Abid
- Unit Virology, Microbiology Laboratory, Charles Nicolle University Hospital, Tunis, Tunisia
- Laboratory of Research “resistance to antibiotics,” Faculty of Medicine of Tunis, Tunis, Tunisia
| | - Mohamed Ali Ben Hadj Kacem
- Unit Virology, Microbiology Laboratory, Charles Nicolle University Hospital, Tunis, Tunisia
- Laboratory of Research “resistance to antibiotics,” Faculty of Medicine of Tunis, Tunis, Tunisia
| | | | - Amel Letaief
- Infectious Diseases Department, Farhat Hached University Hospital, Sousse, Tunisia
| | - Mohamed Chakroun
- Infectious Diseases Department, Fatouma Bourguiba University Hospital, Monastir, Tunisia
| | - Mounir Ben Jemaa
- Infectious Diseases Department, Hedi Chaker University Hospital of Sfax, Sfax, Tunisia
| | - Hayet Hamdouni
- The Global Fund to Fight AIDS, Tuberculosis and Malaria, Geneva, Switzerland
- Primary Health Care Directory (DSSB), Ministry of Health, Tunis, Tunisia
| | - Rafla Tej Dellagi
- Primary Health Care Directory (DSSB), Ministry of Health, Tunis, Tunisia
| | - Khaled Kheireddine
- The Global Fund to Fight AIDS, Tuberculosis and Malaria, Geneva, Switzerland
- National Office of Family and Population, Tunis, Tunisia
| | - Ilhem Boutiba
- Unit Virology, Microbiology Laboratory, Charles Nicolle University Hospital, Tunis, Tunisia
- Laboratory of Research “resistance to antibiotics,” Faculty of Medicine of Tunis, Tunis, Tunisia
| | - Lucía Pérez-Álvarez
- HIV Biology and Variability Unit, Centro Nacional de Microbiología, Instituto de Salud Carlos III, Madrid, Spain
| | - Amine Slim
- Unit Virology, Microbiology Laboratory, Charles Nicolle University Hospital, Tunis, Tunisia
- Laboratory of Research “resistance to antibiotics,” Faculty of Medicine of Tunis, Tunis, Tunisia
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Maamar E, Ferjani S, Jendoubi A, Hammami S, Hamzaoui Z, Mayonnove-Coulange L, Saidani M, Kammoun A, Rehaiem A, Ghedira S, Houissa M, Boutiba-Ben Boubaker I, Slim A, Dubois V. High Prevalence of Gut Microbiota Colonization with Broad-Spectrum Cephalosporin Resistant Enterobacteriaceae in a Tunisian Intensive Care Unit. Front Microbiol 2016; 7:1859. [PMID: 27965626 PMCID: PMC5126703 DOI: 10.3389/fmicb.2016.01859] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Accepted: 11/04/2016] [Indexed: 11/15/2022] Open
Abstract
Healthcare-associated infections due to cefotaxime-resistant (CTX-R) Enterobacteriaceae have become a major public health threat, especially in intensive care units (ICUs). Often acquired nosocomially, CTX-R Enterobacteriaceae can be introduced initially by patients at admission. This study aimed to determine the prevalence and genetic characteristics of CTX-R Enterobacteriaceae-intestinal carriage in ICU patients, to evaluate the rate of acquisition of these organisms during hospitalization, and to explore some of the associated risk factors for both carriage and acquisition. Between December 2014 and February 2015, the 63 patients admitted in the ICU of Charles Nicolle hospital were screened for rectal CTX-R Enterobacteriaceae colonization at admission and once weekly thereafter to identify acquisition. CTX-R Enterobacteriaceae fecal carriage rate was 20.63% (13/63) at admission. Among the 50 non-carriers, 35 were resampled during their hospitalization and the acquisition rate was 42.85% (15/35). Overall, 35 CTX-R Enterobacteriaceae isolates were collected from 28 patients (25 Klebsiella pneumoniae, seven Escherichia coli, and three Enterobacter cloacae strains). Seven patients were simultaneously colonized with two CTX-R Enterobacteriaceae isolates. CTX-M-15 was detected in most of the CTX-R Enterobacteriaceae isolates (30/35, 88.23%). Three strains co-produced CMY-4 and 22 strains were carbapenem-resistant and co-produced a carbapenemase [OXA-48 (n = 13) or NDM-1 (n = 6)]. Molecular typing of K. pneumoniae strains, revealed eight Pulsed field gel electrophoresis (PFGE) patterns and four sequence types (ST) [ST101, ST147, ST429, and ST336]. However, E. coli isolates were genetically unrelated and belonged to A (n = 2), B1 (n = 2) and B2 (n = 3) phylogenetic groups and to ST131 (two strains), ST572 (two strains), ST615 (one strain) and ST617 (one strain). Five colonized patients were infected by CTX-R Enterobacteriaceae (four with the same strain identified from their rectal swab and one with a different strain). Whether imported or acquired during the stay in the ICU, colonization by CTX-R Enterobacteriaceae is a major risk factor for the occurrence of serious nosocomial infections. Their systematic screening in fecal carriage is mandatory to prevent the spread of these multidrug resistant bacteria.
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Affiliation(s)
- Elaa Maamar
- Faculty of Medicine of Tunis - LR99ES09 Research Laboratory of Antimicrobial Resistance, University of Tunis El ManarTunis, Tunisia; Faculty of Sciences of Tunis, University of Tunis El ManarTunis, Tunisia
| | - Sana Ferjani
- Faculty of Medicine of Tunis - LR99ES09 Research Laboratory of Antimicrobial Resistance, University of Tunis El Manar Tunis, Tunisia
| | - Ali Jendoubi
- Intensive Care Unit, Charles Nicolle Hospital Tunis, Tunisia
| | - Samia Hammami
- Faculty of Medicine of Tunis - LR99ES09 Research Laboratory of Antimicrobial Resistance, University of Tunis El ManarTunis, Tunisia; Faculty of Sciences of Gafsa, University of GafsaGafsa, Tunisia
| | - Zaineb Hamzaoui
- Faculty of Medicine of Tunis - LR99ES09 Research Laboratory of Antimicrobial Resistance, University of Tunis El Manar Tunis, Tunisia
| | | | - Mabrouka Saidani
- Faculty of Medicine of Tunis - LR99ES09 Research Laboratory of Antimicrobial Resistance, University of Tunis El ManarTunis, Tunisia; Laboratory of Microbiology, Charles Nicolle HospitalTunis, Tunisia
| | - Aouatef Kammoun
- Faculty of Medicine of Tunis - LR99ES09 Research Laboratory of Antimicrobial Resistance, University of Tunis El ManarTunis, Tunisia; Laboratory of Microbiology, Charles Nicolle HospitalTunis, Tunisia
| | - Amel Rehaiem
- Faculty of Medicine of Tunis - LR99ES09 Research Laboratory of Antimicrobial Resistance, University of Tunis El ManarTunis, Tunisia; Laboratory of Microbiology, Charles Nicolle HospitalTunis, Tunisia
| | - Salma Ghedira
- Intensive Care Unit, Charles Nicolle Hospital Tunis, Tunisia
| | - Mohamed Houissa
- Intensive Care Unit, Charles Nicolle Hospital Tunis, Tunisia
| | - Ilhem Boutiba-Ben Boubaker
- Faculty of Medicine of Tunis - LR99ES09 Research Laboratory of Antimicrobial Resistance, University of Tunis El ManarTunis, Tunisia; Laboratory of Microbiology, Charles Nicolle HospitalTunis, Tunisia
| | - Amine Slim
- Faculty of Medicine of Tunis - LR99ES09 Research Laboratory of Antimicrobial Resistance, University of Tunis El ManarTunis, Tunisia; Laboratory of Microbiology, Charles Nicolle HospitalTunis, Tunisia
| | - Veronique Dubois
- University Bordeaux, Microbiologie Fondamentale et Pathogénicité, UMR5234 Bordeaux, France
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Chlif S, Aissi W, Bettaieb J, Kharroubi G, Nouira M, Yazidi R, El Moussi A, Maazaoui L, Slim A, Salah AB. Modelling of seasonal influenza and estimation of the burden in Tunisia. East Mediterr Health J 2016; 22:460-467. [PMID: 27714740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Accepted: 08/25/2016] [Indexed: 06/06/2023]
Abstract
The burden of influenza was estimated from surveillance data in Tunisia using epidemiological parameters of transmission with WHO classical tools and mathematical modelling. The incidence rates of influenza-associated influenza-like illness (ILI) per 100 000 were 18 735 in 2012/2013 season; 5536 in 2013/14 and 12 602 in 2014/15. The estimated proportions of influenza-associated ILI in the total outpatient load were 3.16%; 0.86% and 1.98% in the 3 seasons respectively. Distribution of influenza viruses among positive patients was: A(H3N2) 15.5%; A(H1N1)pdm2009 39.2%; and B virus 45.3% in 2014/2015 season. From the estimated numbers of symptomatic cases, we estimated that the critical proportions of the population that should be vaccinated were 15%, 4% and 10% respectively. Running the model for the different values of R0, we quantified the number of symptomatic clinical cases, the clinical attack rates, the symptomatic clinical attack rates and the number of deaths. More realistic versions of this model and improved estimates of parameters from surveillance data will strengthen the estimation of the burden of influenza.
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Affiliation(s)
- S Chlif
- Laboratory of Medical Epidemiology, Pasteur Institute of Tunis, Tunis, Tunisia; Joint author
| | - W Aissi
- Laboratory of Medical Epidemiology, Pasteur Institute of Tunis, Tunis, Tunisia; Faculty of Medicine of Tunis, University of Tunis El Manar, Tunis, Tunisia; Joint author
| | - J Bettaieb
- Laboratory of Medical Epidemiology, Pasteur Institute of Tunis, Tunis, Tunisia; Faculty of Medicine of Tunis, University of Tunis El Manar, Tunis, Tunisia
| | - G Kharroubi
- Laboratory of Medical Epidemiology, Pasteur Institute of Tunis, Tunis, Tunisia; Faculty of Medicine of Tunis, University of Tunis El Manar, Tunis, Tunisia
| | - M Nouira
- Laboratory of Medical Epidemiology, Pasteur Institute of Tunis, Tunis, Tunisia; Faculty of Medicine of Tunis, University of Tunis El Manar, Tunis, Tunisia
| | - R Yazidi
- Laboratory of Medical Epidemiology, Pasteur Institute of Tunis, Tunis, Tunisia
| | - A El Moussi
- Virology Unit, Microbiology Laboratory, National Influenza Centre, Charles Nicolle's Hospital, Tunis, Tunisia
| | - L Maazaoui
- Primary Health Care Directorate, Minisstry of Public Health of Tunisia, Tunis, Tunisia. Additional
| | - A Slim
- Virology Unit, Microbiology Laboratory, National Influenza Centre, Charles Nicolle's Hospital, Tunis, Tunisia
| | - A Ben Salah
- Laboratory of Medical Epidemiology, Pasteur Institute of Tunis, Tunis, Tunisia; Faculty of Medicine of Tunis, University of Tunis El Manar, Tunis, Tunisia
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Chlif S, Aissi W, Bettaieb J, Kharroubi G, Nouira M, Yazidi R, El Moussi A, Maazaoui L, Slim A, Ben Salah A, Influenza Surveillance Group in Tunisia. Modelling of seasonal influenza and estimation of the burden in Tunisia. East Mediterr Health J 2016. [DOI: 10.26719/2016.22.7.459] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Ben Moussa M, Khalfallah M, Boutiba Ben Boubaker I, Nouira R, Slim A, Jerraya H, Dziri C. Bacteriological and therapeutic profile of diabetic foot infection: a prospective study of 100 patients. Tunis Med 2016; 94:95-101. [PMID: 27532523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
BACKGROUND Identifying the infecting bacterial flora is one of the main rules to be followed to ensure the success of antibiotherapy in the treatment of the infected diabetic foot. The aim of the work was to define the bacteriological profile of the bacteria causing the infection of the diabetic foot at the surgery unit B of Charles Nicolle's hospital in Tunis and determine the prognostic factors of this condition. METHODS It was an open prospective study. It concerned 100 diabetic patients operated on for diabetic foot infection. All patients had bacteriological samples taken through deep scraping and swabing carried out in the operating room. RESULTS The average age of patients was 59,5 ±11 years, with a sex-ratio of 2,4. The foot infection was represented in 82 % of cases by a wet gangrene. The enterobacteria were the most frequently isolated bacteria (73%), followed by streptococcus (10%), Staphylococcus aureus (9%). The rate of multidrug-resistant bacteria was of 9,5%. The empiric antibiotic therapy used (fusidic acid +amoxicillin/ clavulanic acid) was inactiveon 44,1% of the isolated bacteria. When we compared the group of patients with unfavourable development (who have been reoperated) and the group of patients with favourable development, we have found two poor prognosis factors : arteritis (p=0,018 ; OR=23,7) and presence of multidrug-resistant bacteria (p=0,027 ; OR=5,8). CONCLUSION The enterobacteria were the main bacteria causing the infection of diabetic foot. The prognostic factors found, arteritis and isolation of multidrug-resistant bacteria, outpoint the importance of multidisciplinary care.
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Maamar E, Hammami S, Ferjani S, Hamzaoui Z, Jlizi A, Saidani M, Slim A, Boubaker IBB. Molecular characterization of extended spectrum β-lactamases, ampccephalosporinases and carbapenemases in klebsiellapneumoniae causing bacteremia at charles nicolle Hospital of Tunisia. Acta Med Int 2016. [DOI: 10.5530/ami.2016.2.10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Abroug F, Slim A, Ouanes-Besbes L, Hadj Kacem MA, Dachraoui F, Ouanes I, Lu X, Tao Y, Paden C, Caidi H, Miao C, Al-Hajri MM, Zorraga M, Ghaouar W, BenSalah A, Gerber SI. Family cluster of Middle East respiratory syndrome coronavirus infections, Tunisia, 2013. Emerg Infect Dis 2015; 20:1527-30. [PMID: 25148113 PMCID: PMC4178422 DOI: 10.3201/eid2009.140378] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
In 2013 in Tunisia, 3 persons in 1 family were infected with Middle East respiratory syndrome coronavirus (MERS-CoV). The index case-patient’s respiratory tract samples were negative for MERS-CoV by reverse transcription PCR, but diagnosis was retrospectively confirmed by PCR of serum. Sequences clustered with those from Saudi Arabia and United Arab Emirates.
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Angelico M, Nardi A, Romagnoli R, Marianelli T, Corradini SG, Tandoi F, Gavrila C, Salizzoni M, Pinna AD, Cillo U, Gridelli B, De Carlis LG, Colledan M, Gerunda GE, Costa AN, Strazzabosco M, Cillo U, Fagiuoli S, Strazzabosco M, Caraceni P, Toniutto P, Nanni Costa A, Salizzoni TM, Romagnoli R, Bertolotti G, Patrono D, De Carlis L, Slim A, Mangoni J, Rossi G, Caccamo L, Antonelli B, Mazzaferro V, Regalia E, Sposito C, Colledan M, Corno V, Tagliabue F, Marin S, Cillo U, Vitale A, Gringeri E, Donataccio M, Donataccio D, Baccarani U, Lorenzin D, Bitetto D, Valente U, Gelli M, Cupo P, Gerunda G, Rompianesi G, Pinna A, Grazi G, Cucchetti A, Zanfi C, Risaliti A, Faraci M, Tisone G, Anselmo A, Lenci I, Sforza D, Agnes S, Di Mugno M, Avolio A, Ettorre G, Miglioresi L, Vennarecci G, Berloco P, Rossi M, Ginanni Corradini S, Molinaro A, Calise F, Scuderi V, Cuomo O, Migliaccio C, Lupo L, Notarnicola G, Gridelli B, Volpes R, Li Petri S, Zamboni F, Carbotta G, Dedola S, Nardi A, Marianelli T, Gavrila C, Ricci A, Vespasiano F. A Bayesian methodology to improve prediction of early graft loss after liver transplantation derived from the liver match study. Dig Liver Dis 2014; 46:340-7. [PMID: 24411484 DOI: 10.1016/j.dld.2013.11.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2013] [Revised: 11/07/2013] [Accepted: 11/10/2013] [Indexed: 12/11/2022]
Abstract
BACKGROUND To generate a robust predictive model of Early (3 months) Graft Loss after liver transplantation, we used a Bayesian approach to combine evidence from a prospective European cohort (Liver-Match) and the United Network for Organ Sharing registry. METHODS Liver-Match included 1480 consecutive primary liver transplants performed from 2007 to 2009 and the United Network for Organ Sharing a time-matched series of 9740 transplants. There were 173 and 706 Early Graft Loss, respectively. Multivariate analysis identified as significant predictors of Early Graft Loss: donor age, donation after cardiac death, cold ischaemia time, donor body mass index and height, recipient creatinine, bilirubin, disease aetiology, prior upper abdominal surgery and portal thrombosis. RESULTS A Bayesian Cox model was fitted to Liver-Match data using the United Network for Organ Sharing findings as prior information, allowing to generate an Early Graft Loss-Donor Risk Index and an Early Graft Loss-Recipient Risk Index. A Donor-Recipient Allocation Model, obtained by adding Early Graft Loss-Donor Risk Index to Early Graft Loss-Recipient Risk Index, was then validated in a distinct United Network for Organ Sharing (year 2010) cohort including 2964 transplants. Donor-Recipient Allocation Model updating using the independent Turin Transplant Centre dataset, allowed to predict Early Graft Loss with good accuracy (c-statistic: 0.76). CONCLUSION Donor-Recipient Allocation Model allows a reliable donor and recipient-based Early Graft Loss prediction. The Bayesian approach permits to adapt the original Donor-Recipient Allocation Model by incorporating evidence from other cohorts, resulting in significantly improved predictive capability.
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Affiliation(s)
- Mario Angelico
- Liver Unit, Tor Vergata University, Rome, Italy; Italian Association for the Study of the Liver (AISF), Italian National Transplant Centre (CNT) and Italian Liver Transplant Centres, Italy
| | | | - Renato Romagnoli
- Liver Transplant Unit, Azienda Ospedaliera Città della Salute e della Scienza, University of Turin, Italy; Italian Association for the Study of the Liver (AISF), Italian National Transplant Centre (CNT) and Italian Liver Transplant Centres, Italy.
| | - Tania Marianelli
- Liver Unit, Tor Vergata University, Rome, Italy; Italian Association for the Study of the Liver (AISF), Italian National Transplant Centre (CNT) and Italian Liver Transplant Centres, Italy
| | - Stefano Ginanni Corradini
- Gastroenterology Unit, La Sapienza University, Rome, Italy; Italian Association for the Study of the Liver (AISF), Italian National Transplant Centre (CNT) and Italian Liver Transplant Centres, Italy
| | - Francesco Tandoi
- Liver Transplant Unit, Azienda Ospedaliera Città della Salute e della Scienza, University of Turin, Italy
| | - Caius Gavrila
- Department of Mathematics, Tor Vergata University, Rome, Italy
| | - Mauro Salizzoni
- Liver Transplant Unit, Azienda Ospedaliera Città della Salute e della Scienza, University of Turin, Italy
| | | | - Umberto Cillo
- Liver Transplant Unit, Università of Padua, Italy; Italian Association for the Study of the Liver (AISF), Italian National Transplant Centre (CNT) and Italian Liver Transplant Centres, Italy
| | | | | | | | | | | | - Mario Strazzabosco
- Digestive Disease Section, University of Milan Bicocca, Milan, Italy; Yale University Liver Centre, New Haven, USA; Italian Association for the Study of the Liver (AISF), Italian National Transplant Centre (CNT) and Italian Liver Transplant Centres, Italy
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El Moussi A, Ben Hadj Kacem MA, Slim A. Loss and gain of N-linked glycosylation sites in globular head and stem of HA found in A/H3N2 flu fatal and severe cases during 2013 Tunisia flu seasonal survey. Virus Genes 2013; 48:189-92. [PMID: 24174280 DOI: 10.1007/s11262-013-0993-0] [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] [Subscribe] [Scholar Register] [Received: 05/20/2013] [Accepted: 10/10/2013] [Indexed: 12/15/2022]
Abstract
Glycosylation on the globular head of the hemagglutinin (HA) protein of influenza virus acts as an important target for recognition and destruction of virus by innate immune proteins of the collectin family. In the current study, we have characterized the dynamic amino acid changes at N-linked glycosylation sites of full length sequences of HA genes of 5 A/H3N2 Tunisian strains isolates from mild, severe, and fatal cases. Compared to the reference strain, A/Perth/16/2009 substitutions in potential N-glycosylation sites were observed in 5 HA genes at five different positions (45, 124, 128, 144, and 145) generating the losses and gains of N-linked glycosylation sites. Also the mutation N145S was presented in the receptor-binding site of all segments analyzed. Point mutations in several positions in the gene encoding the H3 of Tunisian strains were shown to ablate a glycan attachment site and also loss of a potential glycosylation site. The relation between these mutations and virulence of influenza A/H3N2 virus needed to be verified in the further experiments.
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Affiliation(s)
- Awatef El Moussi
- National Influenza Centre-Tunis, Microbiology Laboratory, Charles Nicolle's Hospital, Bvd 9 avril, Tunis, Tunisia,
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El Moussi A, Pozo F, Ben Hadj Kacem MA, Ledesma J, Cuevas MT, Casas I, Slim A. Virological Surveillance of Influenza Viruses during the 2008-09, 2009-10 and 2010-11 Seasons in Tunisia. PLoS One 2013; 8:e74064. [PMID: 24069267 PMCID: PMC3777972 DOI: 10.1371/journal.pone.0074064] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2013] [Accepted: 07/29/2013] [Indexed: 12/03/2022] Open
Abstract
Background The data contribute to a better understanding of the circulation of influenza viruses especially in North-Africa. Objective The objective of this surveillance was to detect severe influenza cases, identify their epidemiological and virological characteristics and assess their impact on the healthcare system. Method We describe in this report the findings of laboratory-based surveillance of human cases of influenza virus and other respiratory viruses' infection during three seasons in Tunisia. Results The 2008–09 winter influenza season is underway in Tunisia, with co-circulation of influenza A/H3N2 (56.25%), influenza A(H1N1) (32.5%), and a few sporadic influenza B viruses (11.25%). In 2010–11 season the circulating strains are predominantly the 2009 pandemic influenza A(H1N1)pdm09 (70%) and influenza B viruses (22%). And sporadic viruses were sub-typed as A/H3N2 and unsubtyped influenza A, 5% and 3%, respectively. Unlike other countries, highest prevalence of influenza B virus Yamagata-like lineage has been reported in Tunisia (76%) localised into the clade B/Bangladesh/3333/2007. In the pandemic year, influenza A(H1N1)pdm09 predominated over other influenza viruses (95%). Amino acid changes D222G and D222E were detected in the HA gene of A(H1N1)pdm09 virus in two severe cases, one fatal case and one mild case out of 50 influenza A(H1N1)pdm09 viruses studied. The most frequently reported respiratory virus other than influenza in three seasons was RSV (45.29%). Conclusion This article summarises the surveillance and epidemiology of influenza viruses and other respiratory viruses, showing how rapid improvements in influenza surveillance were feasible by connecting the existing structure in the health care system for patient records to electronic surveillance system for reporting ILI cases.
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Affiliation(s)
- Awatef El Moussi
- Unit Virology, Microbiology Laboratory, National Influenza Centre, Charles Nicolle's Hospital, Tunis, Tunisia
- * E-mail:
| | - Francisco Pozo
- Influenza and Respiratory Viruses Unit, National Influenza Centre, Centro Nacional de Microbiología, Instituto de Salud Carlos III, Majadahonda, Madrid, Spain
| | - Mohamed Ali Ben Hadj Kacem
- Unit Virology, Microbiology Laboratory, National Influenza Centre, Charles Nicolle's Hospital, Tunis, Tunisia
| | - Juan Ledesma
- Influenza and Respiratory Viruses Unit, National Influenza Centre, Centro Nacional de Microbiología, Instituto de Salud Carlos III, Majadahonda, Madrid, Spain
| | - Maria Teresa Cuevas
- Influenza and Respiratory Viruses Unit, National Influenza Centre, Centro Nacional de Microbiología, Instituto de Salud Carlos III, Majadahonda, Madrid, Spain
| | - Inmaculada Casas
- Influenza and Respiratory Viruses Unit, National Influenza Centre, Centro Nacional de Microbiología, Instituto de Salud Carlos III, Majadahonda, Madrid, Spain
| | - Amine Slim
- Unit Virology, Microbiology Laboratory, National Influenza Centre, Charles Nicolle's Hospital, Tunis, Tunisia
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Moussi AE, Kacem MABH, Pozo F, Ledesma J, Cuevas MT, Casas I, Slim A. Frequency of D222G haemagglutinin mutant of pandemic (H1N1) pdm09 influenza virus in Tunisia between 2009 and 2011. Diagn Pathol 2013; 8:124. [PMID: 23902660 PMCID: PMC3751102 DOI: 10.1186/1746-1596-8-124] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2012] [Accepted: 03/10/2013] [Indexed: 01/24/2023] Open
Abstract
Background The novel pandemic A (H1N1) pdm09 virus was first identified in Mexico in April 2009 and since then it spread worldwide over a short period of time. Although the virus infection is generally associated with mild disease and a relatively low mortality, it is projected that mutations in specific regions of the viral genome, especially within the receptor binding domain of the haemagglutinin (HA) protein could result in more virulent virus stains, leading to a more severe pathogenicity. Methods To monitor the genetic polymorphisms at position 222 of Haemagglutinin of influenza A(H1N1)pdm09 viruses from both outpatients with mild influenza and individuals with severe disease requiring hospitalization, during 2009–2010 and 2010–2011 seasons, a sequence-based genotypic assessment of viral populations to understand the prevalence of D222G mutation. Results The D222G was identified in clinical specimens from 3 out of 42 cases analyzed in Tunisia with severe outcome (7%). Interestingly, in one fatal case out of four viruses taken from fatal cases studied (25%). Also this mutation was found in one mild case out of 8 mild cases studied (0.1%). D222E substitution was found in virus taken from one patient with severe clinical syndrome (2%) out of 42 severe cases analyzed and E374K substitution was found in two severe cases (4%) out of 42 severe cases studied. Conclusions A specific mutation in the viral haemagglutinin (D222G) was found in fatal, severe and mild case. Further virological, clinical and epidemiological investigations are needed to ascertain the role of this and other mutations that may alter the virulence and transmissibility of the pandemic influenza A (H1N1)pdm09. Virtual Slides The virtual slide(s) for this article can be found here: http://www.diagnosticpathology.diagnomx.eu/vs/1027334947811255
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Affiliation(s)
- Awatef El Moussi
- National Influenza Centre-Tunis, Unit Virology, Microbiology Laboratory, Charles Nicolle’s Hospital, Tunis, Tunisia
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Stambouli N, Wei NN, Jlizi A, Aissa S, Abdelmalek R, Kilani B, Slim A, Tiouiri BAH, Dridi M, Hamza A, Ben Ammar Elgaied A. Structural insight into a novel human CCR5-V130I variant associated with resistance to HIV-1 infection. J Biomol Struct Dyn 2013; 32:1202-10. [PMID: 23869485 DOI: 10.1080/07391102.2013.819297] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
We report the identification of a novel CC chemokine receptor 5 (CCR5) variant that seems associated with resistance to HIV-1 infection. The V130I mutation of the CCR5 receptor is located in the intracellular loop ICL2 known as DRY box and described in the literature as a nonsynonymous mutation present in nonhuman primates group. Extensive molecular modeling and dynamics simulations were performed to elucidate the mechanism by which the V130I mutation may induce conformational change of the CCR5 folding protein and prevent the interaction with the β-arrestin protein. Our study provides new mechanistic insight into how a specific mutation in the regulatory domain of CCR5 might alter the structural folding of the DRY box and the possible ICL2 loop binding with the β-arrestin protein, as described in our previous computational study. The results from our large-scale simulations complement recent experimental results and clinical features and offer useful insights into the mechanism behind CCR5 protein folding and signal transduction. In order for HIV, the entry of the virus to the cells must fuse with the CCR5 receptor that sits on the surface of T-helper immune cells. The described V130I mutation in the gene encoding the CCR5 protein may results in a defective CCR5-Arrestin binding complex that blocks entry of the virus.
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Affiliation(s)
- Nejla Stambouli
- a Faculty of Sciences of Tunis, Laboratory of Genetics , Immunology and Human Pathology , Tunis , Tunisia
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El Moussi A, Ben Hadj Kacem MA, Pozo F, Ledesma J, Cuevas MT, Casas I, Slim A. Genetic diversity of HA1 domain of heammaglutinin gene of influenza A(H1N1)pdm09 in Tunisia. Virol J 2013; 10:150. [PMID: 23679923 PMCID: PMC3663686 DOI: 10.1186/1743-422x-10-150] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2012] [Accepted: 03/25/2013] [Indexed: 11/23/2022] Open
Abstract
We present major results concerning isolation and determination of the nucleotide sequence of hemagglutinin (HA1) of the pandemic (H1N1)pdm09 influenza viruses found in Tunisia. Amino acid analysis revealed minor amino acid changes in the antigenic or receptor-binding domains. We found mutations that were also present in 1918 pandemic virus, which includes S183P in 4 and S185T mutation in 19 of 27 viruses analyzed from 2011, while none of the 2009 viruses carried these mutations. Also two specific amino acid differences into N-glycosylation sites (N288T and N276H) were detected. The phylogenetic analysis revealed that the majority of the Tunisian isolates clustered with clade A/St. Petersburg/27/2011 viruses characterized by D97N and S185T mutations. However it also reveals a trend of 2010 strains to accumulate amino acid variation and form new phylogenetic clade with three specific amino acid substitutions: V47I, E172K and K308E.
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Affiliation(s)
- Awatef El Moussi
- National Influenza Centre-Tunis, Unit Virology, Microbiology Laboratory, Charles Nicolle's Hospital, Tunis, Tunisia.
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Mhiri L, Boyer B, Goudard M, Mazeron MC, Leruez-Ville M, Slim A, Alain S. [Large diversity of routine methods used for monitoring human cytomegalovirus infections in France]. Pathol Biol (Paris) 2012; 60:352-356. [PMID: 21996434 DOI: 10.1016/j.patbio.2011.08.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2011] [Accepted: 08/31/2011] [Indexed: 05/31/2023]
Abstract
UNLABELLED Monitoring cytomegalovirus circulating viral load is an important parameter of the follow-up in immunocompromised patients. It can be measured either by DNAemia or by pp65 antigenemia. The French national reference center for cytomegaloviruses organized an investigation of practice in 37 teacher hospital virology laboratories to assess the situation in France in 2010. METHODS A questionnaire was sent to collect following information: method used in routine for monitoring of circulating viral load of CMV, assay used, sample matrix and extraction method. RESULTS Thirty-six over thirty-seven laboratories filled the questionnaire. Among these, 67% used the quantitative PCR in routine, 11% antigenemia and 22% antigenemia or quantitative PCR; 87% of the laboratories use whole blood for quantitative PCR, whereas 10% and 3% use plasma and leukocytes respectively. Among the laboratories using DNAemia, 100% used real-time PCR assays, 91% use an automated extraction and 9% a manual extraction. CONCLUSION Thus in France, measurement of DNAemia by real-time PCR is a tool, which gradually replaces the antigenemia for the monitoring of cytomegalovirus infection among immunocompromised patients. The very great diversity of the methods used justifies the installation of a national quality control on total blood, matrix used by 87% of the laboratories.
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Affiliation(s)
- L Mhiri
- Service de bactériologie-virologie-hygiène, Centre national de référence des cytomégalovirus, laboratoire de virologie, CHU Limoges, 2 avenue Martin Luther King, Limoges, France
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Saïdani M, Hammami S, Kammoun A, Slim A, Boutiba-Ben Boubaker I. Emergence of carbapenem-resistant OXA-48 carbapenemase-producing Enterobacteriaceae in Tunisia. J Med Microbiol 2012; 61:1746-1749. [DOI: 10.1099/jmm.0.045229-0] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- M. Saïdani
- Laboratoire de Bactériologie Virologie, Hôpital Charles Nicolle, Boulevard 9 Avril, 1006, Tunis, Tunisia
| | - S. Hammami
- Laboratoire de Bactériologie Virologie, Hôpital Charles Nicolle, Boulevard 9 Avril, 1006, Tunis, Tunisia
| | - A. Kammoun
- Laboratoire de Bactériologie Virologie, Hôpital Charles Nicolle, Boulevard 9 Avril, 1006, Tunis, Tunisia
| | - A. Slim
- Laboratoire de Bactériologie Virologie, Hôpital Charles Nicolle, Boulevard 9 Avril, 1006, Tunis, Tunisia
| | - I. Boutiba-Ben Boubaker
- Laboratoire de Bactériologie Virologie, Hôpital Charles Nicolle, Boulevard 9 Avril, 1006, Tunis, Tunisia
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Elmi Abar A, Jlizi A, Darar HY, Kacem MABH, Slim A. HIV-1 drug resistance genotyping from antiretroviral therapy (ART) naïve and first-line treatment failures in Djiboutian patients. Diagn Pathol 2012; 7:138. [PMID: 23044036 PMCID: PMC3488517 DOI: 10.1186/1746-1596-7-138] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2012] [Accepted: 09/18/2012] [Indexed: 11/23/2022] Open
Abstract
Abstract In this study we report the prevalence of antiretroviral drug resistant HIV-1 genotypes of virus isolated from Djiboutian patients who failed first-line antiretroviral therapy (ART) and from ART naïve patients. Patients and methods A total of 35 blood samples from 16 patients who showed first-line ART failure (>1000 viral genome copies/ml) and 19 ART-naïve patients were collected in Djibouti from October 2009 to December 2009. Both the protease (PR) and reverse transcriptase (RT) genes were amplified and sequenced using National Agency for AIDS Research (ANRS) protocols. The Stanford HIV database algorithm was used for interpretation of resistance data and genotyping. Results Among the 16 patients with first-line ART failure, nine (56.2%) showed reverse transcriptase inhibitor-resistant HIV-1 strains: two (12.5%) were resistant to nucleoside (NRTI), one (6.25%) to non-nucleoside (NNRTI) reverse transcriptase inhibitors, and six (37.5%) to both. Analysis of the DNA sequencing data indicated that the most common mutations conferring drug resistance were M184V (38%) for NRTI and K103N (25%) for NNRTI. Only NRTI primary mutations K101Q, K103N and the PI minor mutation L10V were found in ART naïve individuals. No protease inhibitor resistant strains were detected. In our study, we found no detectable resistance in ∼ 44% of all patients who experienced therapeutic failure which was explained by low compliance, co-infection with tuberculosis and malnutrition. Genotyping revealed that 65.7% of samples were infected with subtype C, 20% with CRF02_AG, 8.5% with B, 2.9% with CRF02_AG/C and 2.9% with K/C. Conclusion The results of this first study about drug resistance mutations in first-line ART failures show the importance of performing drug resistance mutation test which guides the choice of a second-line regimen. This will improve the management of HIV-infected Djiboutian patients. Virtual slides The virtual slide(s) for this article can be found here:
http://www.diagnosticpathology.diagnomx.eu/vs/2051206212753973
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Affiliation(s)
- Aden Elmi Abar
- Laboratoire de la Caisse Nationale de Sécurité Sociale, Djibouti, Republic of Djibouti.
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Hraoui M, Boutiba-Ben Boubaker I, Rachdi M, Slim A, Ben Redjeb S. Macrolide and tetracycline resistance in clinical strains of Streptococcus agalactiae isolated in Tunisia. J Med Microbiol 2012; 61:1109-1113. [PMID: 22538994 DOI: 10.1099/jmm.0.037853-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Between 2007 and 2009, 226 clinical strains of Streptococcus agalactiae, recovered from female genital specimens and from gastric fluid or ear specimens from infected newborns, were isolated at the Laboratory of Microbiology of Charles Nicolle Hospital of Tunis. They were investigated to determine the prevalence of antibiotic resistance and to characterize the mechanisms of resistance to macrolide and tetracycline. All strains were susceptible to penicillin, ampicillin and quinupristin-dalfopristin. They were resistant to chloramphenicol (3.1%), rifampicin (19.1%), erythromycin (40%) and tetracycline (97.3%); 3.1% were highly resistant to streptomycin and 1.3% to gentamicin. Among the erythromycin-resistant isolates, 78.7% showed a constitutive macrolide-lincosamide-streptogramin B (MLS(B)) phenotype with high-level resistance to macrolides and clindamycin (MIC(50) >256 µg ml(-1)), 10% showed an inducible MLS(B) phenotype with high MICs of macrolides (MIC(50) >256 µg ml(-1)) and low MICs of clindamycin (MIC(50)=8 µg ml(-1)) and 2.2% showed an M phenotype with a low erythromycin-resistance level (MIC range=12-32 µg ml(-1)) and low MICs of clindamycin (MIC range: 0.75-1 µg ml(-1)). All strains were susceptible to quinupristin-dalfopristin and linezolid (MIC(90): 0.75 µg ml(-1) for each). MLS(B) phenotypes were genotypically confirmed by the presence of the erm(B) gene and the M phenotype by the mef(A) gene. Resistance to tetracycline was mainly due to the tet(M) gene (93.1%) encoding a ribosome protection mechanism. This determinant is commonly associated with the conjugative transposon Tn916 (P≤0.0002). tet(O) and tet(T) existed in a minority (2.2% and 0.4%, respectively). The efflux mechanism presented by tet(L) was less frequently present (4.5%). No significant association was found between erm(B) and tet(M) genes.
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Affiliation(s)
- M Hraoui
- Laboratoire de Recherche, Résistance aux Antimicrobien, Faculté de Médecine de Tunis, Tunisia
| | - I Boutiba-Ben Boubaker
- Laboratoire de Recherche, Résistance aux Antimicrobien, Faculté de Médecine de Tunis, Tunisia
| | - M Rachdi
- Laboratoire de Recherche, Résistance aux Antimicrobien, Faculté de Médecine de Tunis, Tunisia
| | - A Slim
- Laboratoire de Recherche, Résistance aux Antimicrobien, Faculté de Médecine de Tunis, Tunisia
| | - S Ben Redjeb
- Laboratoire de Recherche, Résistance aux Antimicrobien, Faculté de Médecine de Tunis, Tunisia
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Abar AE, Jlizi A, Darar HY, Ben Nasr M, Abid S, Kacem MABH, Slim A. [Human immunodeficiency virus type 1 subtypes in Djibouti]. Arch Inst Pasteur Tunis 2012; 89:33-37. [PMID: 24834659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The authors had for aim to study the distribution of HIV-1 subtypes in a cohort of HIV positive patients in the hospital General Peltier of Djibouti. An epidemiological study was made on 40 HIV-1 positive patients followed up in the Infectious Diseases Department over three months. All patients sample were subtyped by genotyping. Thirty-five patients (15 men and 20 women) were found infected by an HIV-1 strain belonging to the M group. Genotyping revealed that - 66% of samples were infected with subtype C, 20% with CRF02_AG, 8.5% with B, 2.9% with CRF02_AG/C and 2.9% with K/C. In fact, Subtype C prevalence has been described in the Horn of Africa and a similar prevalence was previously reported in Djibouti. However our study describes the subtype B in Djibouti for the first time. It is the predominant subtype in the Western world. The detection of CRF02_AG strains indicates that they are still circulating in Djibouti, the only country in East Africa in which this recombinant virus was found. CRF02_AG recombinant isolates were primarily described in West and Central Africa. The presence of this viral heterogeneity, probably coming from the mixing of populations in Djibouti, which is an essential economic and geographical crossroads, incites us to vigilance in the surveillance of this infection.
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Amri I, Hmaïed F, Loisy F, Lebeau B, Barkallah I, Saidi M, Slim A. Détection du virus de l’hépatite A dans les coquillages en Tunisie par reverse transcription-nested PCR – recherche de corrélation entre la contamination virale et bactérienne. ACTA ACUST UNITED AC 2011; 59:217-21. [DOI: 10.1016/j.patbio.2009.10.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2009] [Accepted: 10/16/2009] [Indexed: 10/20/2022]
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Mhiri L, Slim A. [Comparison of differents molecular methods for the detection of cytomegalovirus DNA in immunodepressed patients]. Tunis Med 2010; 88:890-893. [PMID: 21136355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
BACKGROUND A Cytomegalovirus infection (HCMV) causes severe complications in immunosuppressed individuals (transplant recipients and AIDS patients). AIM To detect the DNA of the HCMV by three molecular methods, and to identify the fastest method and most significant. METHODS we tested 50 samples in order to detect the presence of the HCMV. This research was carried out by molecular Hybridization, the pp65 Antigenemia and PCR on the blood of the patients presenting an infection to CMV. RESULTS Molecular hybridization is positive for 64%, Antigenemia is detected in 26 cases (50%) and the plasmatic PCR is positive in 13 cases (26%). These studies demonstrated that molecular hybridization permitted CMV detection of different biological liquid but Antigenemia and PCR techniques were used to determine of from leukocytes. Plasma-PCR and Hybridization assay presented the qualitatifs results. CONCLUSION These studies indicate that there is a combining virological between molecular methods.
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Affiliation(s)
- Leila Mhiri
- Laboratoire de Virologie, HôpitalCharles Nicolle
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Lauterio A, Di Sandro S, Slim A, Giacomoni A, Mangoni I, Mihaylov P, Pirotta V, Aseni P, De Carlis L. Hepatocellular Carcinoma in Unrelated Viral Cirrhosis: Long-Term Results After Liver Transplantation. Transplant Proc 2010; 42:1212-5. [PMID: 20534264 DOI: 10.1016/j.transproceed.2010.03.127] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Mellouli F, Ouederni M, Dhouib N, Hajkacem MA, Slim A, Bejaoui M. Successful treatment of influenza A virus by oseltamivir in bone marrow transplant recipients. Pediatr Transplant 2010; 14:178-81. [PMID: 19170930 DOI: 10.1111/j.1399-3046.2008.01114.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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
INFVA is an important cause of pulmonary infections in patients receiving BMT, and is associated with considerable morbidity and mortality for a readily preventable and treatable infection. Few studies have addressed the impact of the new neuraminidase inhibitors in the prognosis of influenza after BMT. The aim of this study is to assess the impact of oseltamivir on the control of INFVA infection in BMT recipients. INFVA was screened in NPA and/or bronchoalveolar lavage using IF in all BMT recipients having respiratory symptoms. Three URTI and one associated upper and LRTI were diagnosed in three BMT recipients out of six patients admitted to the BMT unit, during eight-wk period (March and April 2008). All patients having INFVA respiratory infection were treated by oral oseltamivir 60 mg/day, begun more than 48 h after symptom onset. Respiratory symptoms disappeared within a mean of 60 h (48-96 h) of treatment. However, viral tests had remained positive for 8-39 days. Outside the initial associated URTI and LRTI, no further viral pneumonia occurred. No patient died of INFVA. Oseltamivir was well tolerated outside vomiting during the first three days of treatment in one patient. Oseltamivir appears to play an important role in the outcome of INFVA infection as well in URTI as in severe LRTI in patients receiving BMT.
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Affiliation(s)
- F Mellouli
- Service d'Immuno-Hématologie Pédiatrique, Centre National de Greffe de Moelle Osseuse, Tunis, Tunisia.
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Jlizi A, Azzouzi A, Bouzayen I, Slim A, Ben Rejeb S, Garbouj M, Ben Ammar El. Gaaied A. Effets de l’exposition prolongée au traitement chez des patients tunisiens, évalués par le test génotypique de résistance du VIH-1. Med Mal Infect 2009; 39:707-13. [DOI: 10.1016/j.medmal.2008.10.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2008] [Revised: 07/21/2008] [Accepted: 10/15/2008] [Indexed: 11/26/2022]
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Helmbold A, Blevins J, Castillo-Rojas L, Shry E, Rubal B, Slim A. Abstract: P764 THE EFFECTS OF EXTENDED RELEASE NIACIN IN COMBINATION WITH OMEGA 3 FATTY ACID SUPPLEMENTS IN THE TREATMENT OF ELEVATED LIPOPROTEIN(A). ATHEROSCLEROSIS SUPP 2009. [DOI: 10.1016/s1567-5688(09)70920-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Jlizi A, Slim A, Benammar Elgaaied A, Ben Rejab S, Ben Chaabane T, Letaief-Omezzine A, Chakroun M, Garbouj M. [Evaluating the therapeutic care of HIV infection in Tunisia]. Tunis Med 2008; 86:534-539. [PMID: 19216443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
OBJECTIVE Our aim is to determine different therapeutic response profiles in Tunisian HIV-1 infected patients, to identify those with therapeutic failure and to compare the results of the genotypic resistance test used in Tunisia (INNO LiPA Test) with those of automatic sequencing to evaluate its efficacy. METHODS The retrospective survey concerns 392 infected patients enrolled from January 2001 to December 2006. Evaluation of HIV INNO LiPA test was performed by comparing these test results with those of automatic sequencing in 36 plasmatic samples for 13 infected patients with therapeutic failure. RESULTS on the basis of the HIV viral load evolution, 57.55% of patients present a good therapeutic response and 42.44% a bad one. Patients with therapeutic failure require genotypic resistance test. A comparison of HIV INNO LiPA test and direct sequencing showed a strong concordance between the two tests results either for reverse transcriptase gene or protease gene. However, the results obtained by INNO LiPA test (8.79% of analysed codons ) and the limited number of analysed codons were the defaults of INNO LiPA technique. CONCLUSION the contribution of INNO LiPA technique in the knowledge of the epidemiological HIV resistance profiles of virus strains of HIV infected individuals failing therapy was considerable. However, due to INNO LiPA technique limitations, sequence analysis must be considered a more complete assay for the monitoring of antiretroviral resistance of HIV infected patients.
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Affiliation(s)
- Asma Jlizi
- Laboratoire de Microbiologie, Hôpital Charles Nicolle, Tunis, Tunisie
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Jlizi A, Edouard J, Fadhlaoui-Zid K, Frigi S, Debré P, Slim A, Theodorou I, El Gaaied ABA, Carpentier W. Identification of the CCR5-Δ32 HIV resistance allele and new mutations of the CCR5 gene in different Tunisian populations. Hum Immunol 2007; 68:993-1000. [PMID: 18191728 DOI: 10.1016/j.humimm.2007.10.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2007] [Revised: 09/28/2007] [Accepted: 10/01/2007] [Indexed: 11/19/2022]
Affiliation(s)
- Asma Jlizi
- Laboratoire de Génétique, Immunologie et Pathologies Humaines, Faculté des Sciences de Tunis, Université Tunis El Manar, Tunis, Tunisie
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Mhiri L, Meritet JF, Lebon P, Slim A. [Different human cytomegalovirus glycoprotein B (gB) genotype distribution]. ACTA ACUST UNITED AC 2007; 56:39-42. [PMID: 17418502 DOI: 10.1016/j.patbio.2007.02.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2006] [Accepted: 02/01/2007] [Indexed: 10/23/2022]
Abstract
The glycoprotein B (gB) is the major glycoprotein of the envelope of the human cytomegalovirus, it is encoded by UL55 open reading frame, implicated in host cell, entry cell to cell virus transmission and fusion of infected cells and a significant is an important target for immuno-reactions humoral and cellular. A prospective analysis of cytomegalovirus glycoprotein B genotype was conducted on 31 immunodepressed (transplant recipients and AIDS patients). The DNA was extracted directly from the bronchoalveolar liquid (BAL) of these patients. The gB genotypes of CMV was determined by using the polymerase chain reaction, followed by the digestion of two enzymes of restriction HinfI and RsaI. The distribution of the gB genotype of the CMV was: gB1 38,70%; gB2 25,80%; gB3 16,12% and gB4 19,35%. The analysis of the peptide sequence of this region (codons 437-520), indicate the variation was more frequent between codons 448-480.
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Affiliation(s)
- L Mhiri
- Service de virologie, hôpital Charles-Nicolle, Tunis, Tunisie.
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Achour A, Boutolleau D, Slim A, Agut H, Gautheret-Dejean A. Human herpesvirus-6 (HHV-6) DNA in plasma reflects the presence of infected blood cells rather than circulating viral particles. J Clin Virol 2007; 38:280-5. [PMID: 17339132 DOI: 10.1016/j.jcv.2006.12.019] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2006] [Accepted: 12/22/2006] [Indexed: 10/23/2022]
Abstract
BACKGROUND The presence of HHV-6 DNA in plasma or serum is considered a good marker of active infection. However, it is ignored whether this DNA corresponds to virus particles produced by lymphoid tissue infection or virus-free DNA released from infected circulating blood cells. OBJECTIVES To investigate whether HHV-6 DNA in whole plasma is nonencapsidated and its amount is correlated to cellular and human herpesvirus-7 (HHV-7) DNA loads in plasma subfractions as well as in corresponding peripheral blood mononuclear cells (PBMCs). STUDY DESIGN Whole plasma samples from immunocompromised patients were submitted to a DNase-resistance test. Plasma samples from a second group of patients were split up into three subfractions: P1 (pellet of clarification), P2 (pellet of ultracentrifugation), and S (supernatant of ultracentrifugation). HHV-6, HHV-7, and cellular DNA loads were determined in each fraction and PBMCs using specific real-time PCR. RESULTS Among 14 whole plasma samples, the majority of HHV-6 DNA detected was unprotected against DNase, i.e. nonencapsidated. The study of 35 other plasma samples revealed that cellular DNA was present in all subfractions from all samples whereas HHV-6 DNA was detected in 13 P1, 12 P2, 10 S fractions, and HHV-7 DNA in only one P1 fraction. Accordingly, median HHV-6 DNA load was significantly higher in P1 than in P2 and S fractions. The detection of HHV-6 DNA in plasma subfractions was statistically associated with a higher HHV-6 viral load in PBMCs (p<or=0.0003). CONCLUSIONS Taken together, these data tend to favour the hypothesis of a release of HHV-6 and cellular DNA into plasma following the lysis of infected PBMCs. HHV-6 DNA in plasma does not necessarily reflect the amount of virus produced by the active infection of distant lymphoid tissue and organs.
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Affiliation(s)
- Abla Achour
- Laboratoire de Virologie, Université Pierre et Marie Curie-Paris6 EA 2387, Groupe Hospitalier Pitié-Salpêtrière, Université Paris 6, Paris, France
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Ksouri H, Eljed H, Greco A, Lakhal A, Torjman L, Abdelkefi A, Ben Othmen T, Ladeb S, Slim A, Zouari B, Abdeladhim A, Ben Hassen A. Analysis of cytomegalovirus (CMV) viremia using the pp65 antigenemia assay, the amplicor CMV test, and a semi-quantitative polymerase chain reaction test after allogeneic marrow transplantation. Transpl Infect Dis 2007; 9:16-21. [PMID: 17313466 DOI: 10.1111/j.1399-3062.2006.00171.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A pp65 antigenemia assay for polymorphonuclear leukocytes (PMNLs) (CINAkit Rapid Antigenemia), and a qualitative polymerase chain reaction (PCR) test for plasma 'PCR-P qual' (Amplicor cytomegalovirus [CMV] test) were performed for 126 samples (blood and plasma) obtained from 18 bone marrow transplant patients, over a 9-month surveillance period. Among those samples, 92 were assayed with a semi-quantitative PCR test for PMNLs 'PCR-L quant.' The number of samples with a positive CMV test for antigenemia and PCR-P qual assays was 20.63% and 12.7%, respectively, whereas the PCR-L quant assay was positive in 48 of the 92 samples assayed (52.17%). The rates of concordance of the results of PCR-P qual and antigenemia, PCR-P qual and PCR-L quant, antigenemia and PCR-L quant were 92%, 65.2% and 66.8%, respectively. The analysis of the results for the 92 specimens tested by all 3 methods showed a rate of concordance of 63% among all methods. Good agreement (kappa=0.72) was found only between pp65 Ag and PCR-P qual assays. Clinical disease correlates with an antigenemia high viral load. Three patients had CMV disease despite preemptive therapy, and all of them had graft-versus-host-disease (GVHD). PMNLs-based assays are more efficient in monitoring CMV reactivation, but for high-risk patients with GVHD, more sensitive assays (real-time PCR) must be done.
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Affiliation(s)
- H Ksouri
- Service des Laboratoires, Centre National de Greffe de Moelle Osseuse, Tunis, Tunisia.
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Mhiri L, Kaabi B, Houimel M, Arrouji Z, Slim A. Comparison of pp65 antigenemia, quantitative PCR and DNA hybrid capture for detection of cytomegalovirus in transplant recipients and AIDS patients. J Virol Methods 2007; 143:23-8. [PMID: 17336402 DOI: 10.1016/j.jviromet.2007.01.033] [Citation(s) in RCA: 21] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2006] [Revised: 01/25/2007] [Accepted: 01/31/2007] [Indexed: 12/12/2022]
Abstract
The cytomegalovirus (CMV) antigenemia assay has been used frequently for rapid diagnosis of CMV infection, and antigenemia threshold values are recommended for triggering preemptive therapy. Hybrid capture of CMV's DNA and quantitative polymerase chain reaction (qPCR) are increasingly being adopted for early detection of CMV. The performance of the antigenemia assay, qPCR in plasma and hybrid capture in leukocytes were compared in 110 immunocompromised patients (38 bone-marrow transplants, 50 renal transplants and 22 AIDS patients). The most sensitive test was hybrid capture for transplants, while antigenemia and the qPCR showed similar performance for patients with AIDS. QPCR and hybrid capture thresholds requiring antiviral therapy were calculated using a receiver-operating-characteristic curve for antigenemia values corresponding to 2 positive cells for bone-marrow transplants and to 10 positive cells for renal transplants and AIDS patients. These threshold values varied with the group of patients considered, with corresponding sensitivities higher than 86% and specificities higher than 76% for hybrid capture, and sensitivities higher than 61% and specificities higher than 75% for qPCR in plasma. Hybrid capture in leukocytes can substitute for antigenemia in the case of transplants, and qPCR in plasma can substitute for it in the case of AIDS patients.
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Affiliation(s)
- Leila Mhiri
- Laboratory of Virology, Charles Nicolle Hospital, Boulevard, 9-Avril-1938, 1006 Tunis, Tunisia
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Hmaïed F, Ben Mamou M, Dubois M, Pasquier C, Sandres-Saune K, Rostaing L, Slim A, Arrouji Z, Ben Redjeb S, Izopet J. Determining the source of nosocomial transmission in hemodialysis units in Tunisia by sequencing NS5B and E2 sequences of HCV. J Med Virol 2007; 79:1089-94. [PMID: 17597483 DOI: 10.1002/jmv.20877] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Hepatitis C virus infection is a significant problem in hemodialysis units. HCV is very variable genetically with six genotypes. Clinical and epidemiological investigation of a new infection requires the determination of both the genotype and the strain of the HCV involved. A prospective, epidemiologic study of 395 dialysis patients in Tunisia was conducted from November 2001 to November 2003 to identify the source of nosocomial transmission using phylogenetic analysis of NS5b and E2 sequences. Hepatitis C infection was diagnosed by screening for anti-HCV antibodies and HCV RNA in sera using third generation ELISA and a qualitative RT-PCR assay. HCV strains were genotyped by sequencing the NS5b region. The genetic relatedness of the HCV strains was studied by sequencing the NS5b and the HVR-1 regions of the HCV genome. Two de novo cases of HCV infection were detected during the follow-up. One of them has been described previously. The case described in this study occurred in a center in which 12 patients were already infected with HCV strains belonging to genotypes 1b (n = 8) and 1a (n = 4). Phylogenetic analysis of the NS5b region from the HCV strains circulating in this center disclosed four clusters, confirmed by analysis of the HVR-1 region, providing strong evidence for nosocomial infection. Epidemiological data showed that these patients were dialyzed during the same shift and in the same area. Phylogenetic analysis of NS5b sequences is useful for determining the HCV genotype and providing evidence of nosocomial transmission.
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Affiliation(s)
- Fatma Hmaïed
- Laboratoire de Microbiologie, Hôpital Charles Nicolle, Tunis, Tunisia.
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Giacomoni A, Lauteri A, Slim A, Mangoni I, Aseni P, Pirotta V, Mariani A, De Carlis L. L/I-8 Adult living donor liver transplants: biliary morbidity. Clin Transplant 2006. [DOI: 10.1111/j.1399-0012.2006.00577_3_8.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Mhiri L, Arrouji Z, Slim A, Ben Redjeb S. [Detection of DNA human cytomegalovirus of a molecular methods: hybrid capture DNA CMV by immunocompromised]. Tunis Med 2006; 84:644-6. [PMID: 17193858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Human cytomegalovirus (HCMV), a member of the beta-virus herpes family, is a ubiquitous human pathogen. After a primary infection, HCMV establishes life latency. HCMV rarely causes symptomatic disease in an immunocompetent host, however, it is a major cause of infectious morbidity and mortality in immunocompromised individuals and developing fetuses. The HCMV genome consists of 240 kbp of double stranded DNA. Early diagnosis molecular of CMV infection is important. The objective of this study was to develop a molecular methods: Quantitative Hybrid capture for the detection of DNA CMV. We present results for 200 immunocompromised collected from 1999 to 2003 (122 men and 78 women, whom mean age was 35 years). Our results showed that 25% of women and 36% of men were positif for hybrid capture DNA CMV. This simple test (cold probe) provide quantitative and fast results. Also the efficacity of anti-CMV therapy can be followed. More over, in contrary with pp65-antigenemia assay and CMV PCR, this test can be managed on biopsy sample.
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Affiliation(s)
- Leila Mhiri
- Laboratoire de Vimlogie, Hôpital Charles Nicolle, Tunis
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