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Jaïdane H, Halouani A, Jmii H, Elmastour F, Abdelkefi S, Bodart G, Michaux H, Chakroun T, Sane F, Mokni M, Geenen V, Hober D, Aouni M. In-utero coxsackievirus B4 infection of the mouse thymus. Clin Exp Immunol 2016; 187:399-407. [PMID: 27790717 DOI: 10.1111/cei.12893] [Citation(s) in RCA: 8] [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] [Subscribe] [Scholar Register] [Accepted: 10/25/2016] [Indexed: 12/29/2022] Open
Abstract
Type B coxsackievirus (CV-B) infections are involved frequently in the triggering of several autoimmune diseases such as myocarditis, dilated cardiomyopathy, pericarditis, pancreatitis, type 1 diabetes, encephalitis, thyroiditis or Sjögren's syndrome. Serological and virological evidence suggests that maternal infections during pregnancy can play a role in the appearance of these diseases in offspring. The current study aims to explore the effect of an in-utero CV-B infection on the fetal thymus, the central site for programming immunological self-tolerance. In this perspective, female Swiss albino mice were inoculated intraperitoneally or orally with the diabetogenic CV-B4 E2 strain at gestational days 10 or 17. Offspring were killed at different post-inoculation times, and their thymuses were analysed for evidence of infection and alterations in thymic T cell subsets. In-utero CV-B infection of the thymus was demonstrated during the course of vertical transmission, as attested by viral RNA and infectious virus detection in most analysed samples. No histopathological changes were evident. Thymic T cells were not depleted, despite being positive for viral RNA. As evidenced by flow cytometry analysis, CV-B infection of the fetal thymus induced significant changes of thymic T cell populations, particularly with maternal inoculation at gestational day 10. Altogether, these findings suggest that CV-B infection of the fetal thymus may play an important role in the genesis of autoimmune diseases.
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Affiliation(s)
- H Jaïdane
- Université de Monastir, Laboratoire des Maladies Transmissibles et Substances Biologiquement Actives LR99ES27, Faculté de Pharmacie de Monastir, Monastir, Tunisia.,Université de Tunis El Manar, Faculté des Sciences de Tunis, Tunis, Tunisia
| | - A Halouani
- Université de Monastir, Laboratoire des Maladies Transmissibles et Substances Biologiquement Actives LR99ES27, Faculté de Pharmacie de Monastir, Monastir, Tunisia.,Université de Tunis El Manar, Faculté des Sciences de Tunis, Tunis, Tunisia
| | - H Jmii
- Université de Monastir, Laboratoire des Maladies Transmissibles et Substances Biologiquement Actives LR99ES27, Faculté de Pharmacie de Monastir, Monastir, Tunisia.,Université de Tunis El Manar, Faculté des Sciences de Tunis, Tunis, Tunisia
| | - F Elmastour
- Université de Monastir, Laboratoire des Maladies Transmissibles et Substances Biologiquement Actives LR99ES27, Faculté de Pharmacie de Monastir, Monastir, Tunisia.,Université de Tunis El Manar, Faculté des Sciences de Tunis, Tunis, Tunisia
| | - S Abdelkefi
- Université de Sousse, Unité de recherche 'UR06SP05', Centre Régional de Transfusion Sanguine, Hôpital Farhat Hached, Sousse, Tunisia
| | - G Bodart
- Université de Liege, GIGA Research - Centre d'Immunologie, CHU-B34, B-4000 Liege-Sart, Tilman, Belgium
| | - H Michaux
- Université de Liege, GIGA Research - Centre d'Immunologie, CHU-B34, B-4000 Liege-Sart, Tilman, Belgium
| | - T Chakroun
- Université de Sousse, Unité de recherche 'UR06SP05', Centre Régional de Transfusion Sanguine, Hôpital Farhat Hached, Sousse, Tunisia
| | - F Sane
- Université Lille 2, CHRU Lille, Laboratoire de Virologie EA3610, Bâtiment P. Boulanger, Hôpital A. Calmette CHRU, Lille, 59037, France
| | - M Mokni
- Université de Sousse, CHU Farhat Hached, Service d'Anatomopathologie, Sousse, Tunisia
| | - V Geenen
- Université de Liege, GIGA Research - Centre d'Immunologie, CHU-B34, B-4000 Liege-Sart, Tilman, Belgium
| | - D Hober
- Université Lille 2, CHRU Lille, Laboratoire de Virologie EA3610, Bâtiment P. Boulanger, Hôpital A. Calmette CHRU, Lille, 59037, France
| | - M Aouni
- Université de Monastir, Laboratoire des Maladies Transmissibles et Substances Biologiquement Actives LR99ES27, Faculté de Pharmacie de Monastir, Monastir, Tunisia
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2
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Abstract
Association of pernicious anemia and systemic lupus erythematosus is rare, although both diseases are autoimmune origin. We describe the case of a 40-year old man with systemic lupus erythematosus (SLE) who developed pernicious anemia. The cobalamin deficiency was revealed by macrocytic pancytopenia. After 1 month of vitamin B12 treatment, hemoglobin and white blood cell count remain normal but thrombocytopenia persists and was considered as immunologic from SLE origin requiring corticosteroids. Lupus (2007) 16, 827—829.
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Affiliation(s)
- L Benjilali
- Department of Internal Medicine, Ibn Sina Hospital, Rabat, Morroco
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3
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Boukoum H, Nahdi I, Sahtout W, Skhiri H, Segondy M, Aouni M. BK polyomavirus genotypes and nephropathy: is there a relationship? Transpl Infect Dis 2016; 18:309-11. [DOI: 10.1111/tid.12502] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2015] [Revised: 11/08/2015] [Accepted: 11/29/2015] [Indexed: 12/01/2022]
Affiliation(s)
- H. Boukoum
- Laboratoire des Maladies Transmissibles et Substances Biologiquement Actives; Faculté de Pharmacie; Monastir Tunisia
| | - I. Nahdi
- Laboratoire des Maladies Transmissibles et Substances Biologiquement Actives; Faculté de Pharmacie; Monastir Tunisia
| | - W. Sahtout
- Service de Néphrologie; Hôpital Sahloul; Sousse Tunisia
| | - H. Skhiri
- Service de Néphrologie; Hôpital Fattouma Bourguiba; Monastir Tunisia
| | - M. Segondy
- Laboratoire de Virologie; CHU de Montpellier; Université de Montpellier I; Hôpital Saint-Éloi; Montpellier France
| | - M. Aouni
- Laboratoire des Maladies Transmissibles et Substances Biologiquement Actives; Faculté de Pharmacie; Monastir Tunisia
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Merghni A, Marzouki H, Hentati H, Aouni M, Mastouri M. Antibacterial and antibiofilm activities of Laurus nobilis L. essential oil against Staphylococcus aureus strains associated with oral infections. Curr Res Transl Med 2015; 64:S0369-8114(15)00101-7. [PMID: 26657812 DOI: 10.1016/j.patbio.2015.10.003] [Citation(s) in RCA: 18] [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: 06/20/2015] [Accepted: 10/30/2015] [Indexed: 10/22/2022]
Abstract
BACKGROUND Laurus nobilis L. is an aromatic herb with relevant medicinal properties due to its important chemical composition and its potential therapeutic effects. In this study, we investigate the chemical composition, the antibacterial and the antibiofilms activities of Tunisian L. nobilis L. essential oils against clinical Staphylococcus aureus strains. METHODS The chemical composition of L. nobilis L. essential oils was analysed by Gas Chromatography-Mass Spectrometry (GC-MS). The antibacterial activity of L. nobilis L. essential oils was evaluated in vitro against oral S. aureus (n=21) strains using broth microdilution method. The antibiofilm activity was assessed via Crystal Violet staining and MTT assays. RESULTS Our results revealed that GC-MS assay exhibited 1.8-Cineole, methyl eugenol and α-terpinyl acetate as the major compounds in the essential oils. Moreover, the essential oil from Sousse exhibited the best bactericidal activity (MICs values ranged from 3.91 to 15.62mgm-1). Furthermore, this oil showed a strong biofilm inhibition effect above 70%, from a low sub-inhibitory concentration (1/16×MIC). MTT assay revealed that both essential oils displayed an excellent antibiofilm activity with eradication percentages ranging from 79.6±2.27 to 95.2±0.56. CONCLUSION Our finding demonstrated that L. nobilis L. essential oils are able to inhibit oral S. aureus strains with important antibiofilm efficacy. It could have a promising role in the prevention of oral diseases.
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Affiliation(s)
- A Merghni
- Laboratory of infectious diseases and biological agents (LR99ES27), faculty of pharmacy, Monastir university, avenue Avicenne, 5000 Monastir, Tunisia.
| | - H Marzouki
- Laboratory of infectious diseases and biological agents (LR99ES27), faculty of pharmacy, Monastir university, avenue Avicenne, 5000 Monastir, Tunisia
| | - H Hentati
- Buccodental surgery department of Monastir dental clinic, laboratory of oral health and orofacial rehabilitation (LR12ES11), Monastir, Tunisia
| | - M Aouni
- Laboratory of infectious diseases and biological agents (LR99ES27), faculty of pharmacy, Monastir university, avenue Avicenne, 5000 Monastir, Tunisia
| | - M Mastouri
- Laboratory of infectious diseases and biological agents (LR99ES27), faculty of pharmacy, Monastir university, avenue Avicenne, 5000 Monastir, Tunisia; Laboratory of microbiology, university hospital of Fattouma Bourguiba, Monastir, Tunisia
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5
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Hassine-Zaafrane M, Kaplon J, Ben Salem I, Sdiri-Loulizi K, Sakly N, Pothier P, Aouni M, Ambert-Balay K. Detection and genotyping of group A rotaviruses isolated from sewage samples in Monastir, Tunisia between April 2007 and April 2010. J Appl Microbiol 2015; 119:1443-53. [PMID: 26248601 DOI: 10.1111/jam.12920] [Citation(s) in RCA: 10] [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] [Received: 05/07/2015] [Revised: 07/10/2015] [Accepted: 07/25/2015] [Indexed: 12/11/2022]
Abstract
AIMS To ascertain the viral load, the distribution of G and P types of group A rotaviruses (RV-A) in sewage samples and to compare strains in clinical, animal and environmental samples. METHODS AND RESULTS During our study from April 2007 to April 2010, 518 samples of raw and treated sewage were collected from two biological sewage treatment plants (STPs) located in the Monastir region, Tunisia. RV-A was detected by real-time RT-PCR in 375 (72·4%) sewage samples. According to the quantification results of RV-A, it appears that the viral load in raw and treated sewage of the two STPs was quite similar (P = 0·735). The genotyping of RV-A strains detected in sewage samples showed a great diversity with 10 G types and 8 P types. Most of them were described as common in humans, but we also detected genotypes commonly found in animals. All the genotypes detected in two previous studies performed in our laboratory on clinical and bovine samples were also found in environmental samples. However, some genotypes commonly found in animal were only found in sewage samples. CONCLUSION The comparison of environmental, clinical and animal data suggests that STPs may convey not only human sewage but also animal wastes, both of them contaminated with numerous RV-A strains which are not efficiently eliminated by the sewage treatment process and may spread to surface waters. SIGNIFICANCE AND IMPACT OF THE STUDY This work demonstrates the potential release of human and animal RV-A into water sources, representing a public health risk, by inducing gastroenteritis in population, but also by increasing the risk of zoonotic transmission and formation of reassortant viruses which could get a higher infectious potential. Our findings also suggest that monitoring of sewage may provide an additional tool to determine the epidemiology of RV-A circulating in a given community.
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Affiliation(s)
- M Hassine-Zaafrane
- Laboratory of Infectious Diseases and Biological Agents, Faculty of Pharmacy, University of Monastir, Monastir, Tunisia.,National Reference Center for Enteric Viruses, Laboratory of Virology, University Hospital of Dijon, Dijon, France
| | - J Kaplon
- National Reference Center for Enteric Viruses, Laboratory of Virology, University Hospital of Dijon, Dijon, France
| | - I Ben Salem
- Laboratory of Infectious Diseases and Biological Agents, Faculty of Pharmacy, University of Monastir, Monastir, Tunisia
| | - K Sdiri-Loulizi
- Laboratory of Infectious Diseases and Biological Agents, Faculty of Pharmacy, University of Monastir, Monastir, Tunisia.,National Reference Center for Enteric Viruses, Laboratory of Virology, University Hospital of Dijon, Dijon, France
| | - N Sakly
- Laboratory of Immunology, University Hospital Fattouma Bourguiba, Monastir, Tunisia
| | - P Pothier
- National Reference Center for Enteric Viruses, Laboratory of Virology, University Hospital of Dijon, Dijon, France
| | - M Aouni
- Laboratory of Infectious Diseases and Biological Agents, Faculty of Pharmacy, University of Monastir, Monastir, Tunisia
| | - K Ambert-Balay
- Laboratory of Infectious Diseases and Biological Agents, Faculty of Pharmacy, University of Monastir, Monastir, Tunisia
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Ayouni S, Estienney M, Sdiri-Loulizi K, Ambert-Balay K, de Rougemont A, Aho S, Hammami S, Aouni M, Guédiche MN, Pothier P, Belliot G. Relationship between GII.3 norovirus infections and blood group antigens in young children in Tunisia. Clin Microbiol Infect 2015; 21:874.e1-8. [PMID: 26003283 DOI: 10.1016/j.cmi.2015.05.015] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [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: 01/12/2015] [Revised: 04/29/2015] [Accepted: 05/11/2015] [Indexed: 12/30/2022]
Abstract
Noroviruses (NoVs) constitute a major cause of gastroenteritis in Tunisia. One hundred and fourteen matched saliva and stool samples were collected from children (n = 114) suffering from acute gastroenteritis at the hospital of Monastir during the winter season 2011-2012. For 98 of 114 children, blood samples were collected for secretor genotyping. NoVs were associated with 36.8% (n = 42/114) of the gastroenteritis cases. The GII.3 genotype was the most common (69% of all NoVs). For patients who were phenotyped (n = 114) for human blood group antigens (HBGAs), the secretor and non-secretor phenotypes represented 79% and 21%, respectively. Of the NoV infections, 83% were detected in all ABO groups. Five GII.3 isolates, one GII.1 isolate and one GII.7 isolate were detected in Lewis-positive non-secretors, confirmed by genotyping of the FUT2 gene. Even though our data showed that GII.3 NoVs could infect non-secretors, no binding was observed with saliva and GII.3 baculovirus-expressed virus-like particles from the same symptomatic non-secretor individual. This suggests that other factors might also participate in NoV attachment in children and newborns.
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Affiliation(s)
- S Ayouni
- National Reference Centre for Enteric Viruses, Public Hospital of Dijon, France; Laboratory of Infectious Diseases and Biological Agents, Faculty of Pharmacy, Monastir, Tunisia
| | - M Estienney
- National Reference Centre for Enteric Viruses, Public Hospital of Dijon, France
| | - K Sdiri-Loulizi
- Laboratory of Infectious Diseases and Biological Agents, Faculty of Pharmacy, Monastir, Tunisia
| | - K Ambert-Balay
- National Reference Centre for Enteric Viruses, Public Hospital of Dijon, France
| | - A de Rougemont
- National Reference Centre for Enteric Viruses, Public Hospital of Dijon, France
| | - S Aho
- Epidemiology and Infection Control Unit, Public Hospital of Dijon, Dijon, France
| | - S Hammami
- Paediatric Department, University Hospital Fattouma Bourguiba, Monastir, Tunisia
| | - M Aouni
- Laboratory of Infectious Diseases and Biological Agents, Faculty of Pharmacy, Monastir, Tunisia
| | - M N Guédiche
- Paediatric Department, University Hospital Fattouma Bourguiba, Monastir, Tunisia
| | - P Pothier
- National Reference Centre for Enteric Viruses, Public Hospital of Dijon, France
| | - G Belliot
- National Reference Centre for Enteric Viruses, Public Hospital of Dijon, France.
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7
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Ben-Selma W, Ben-Fredj N, Chebel S, Frih-Ayed M, Aouni M, Boukadida J. Age- and gender-specific effects on VDR gene polymorphisms and risk of the development of multiple sclerosis in Tunisians: a preliminary study. Int J Immunogenet 2015; 42:174-81. [PMID: 25892553 DOI: 10.1111/iji.12197] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2014] [Revised: 02/16/2015] [Accepted: 03/04/2015] [Indexed: 12/15/2022]
Abstract
The vitamin D receptor (VDR) polymorphisms have been reported to be associated with multiple sclerosis (MS); however, evidence remains conflicting. In this report, we investigated the association between two single nucleotide polymorphisms (SNPs) TaqI and ApaI of VDR gene and risk development of MS. TaqI and ApaI SNPs were detected by PCR-RFLP from the DNA of 60 Tunisian patients with MS and 114 healthy controls. Our results show a significant difference of the allelic frequency distribution between the case and control groups for TaqI SNP (P = 0.01), but genotype frequencies were not significantly different (P = 0.07 and 0.23). When adjusting frequency distribution of different alleles and genotypes by age, we found that the difference between the T allele frequencies of this SNP in the group of patients age [15-24] in comparison with the control group of the same age group was statistically significant (P = 0.026). Moreover, frequency of the T allele was significantly higher in male patients compared with controls of the same sex (P = 0.017). However, neither the genotype nor the allele frequency distribution was significantly different between the MS and control populations for the ApaI SNP. Our preliminary results indicate that VDR gene polymorphism could be associated with susceptibility to MS. The role of VDR gene polymorphism should be further studied in other large populations, and the distribution of other polymorphism, such as FokI and BsmI, should be also analysed to confirm another susceptibility polymorphisms gene for MS and to obtain more adequate strategies for treatment of MS.
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Affiliation(s)
- W Ben-Selma
- Laboratory of Microbiology and Immunology, UR12SP34, Farhat Hached University Hospital, Sousse, Tunisia
| | - N Ben-Fredj
- Laboratory of Transmissible Diseases and Biological Active substances, LR99-ES27, Faculty of Pharmacy, University of Monastir, Monastir, Tunisia
| | - S Chebel
- Department of Neurology, Fattouma Bourguiba University Hospital, Monastir, Tunisia
| | - M Frih-Ayed
- Department of Neurology, Fattouma Bourguiba University Hospital, Monastir, Tunisia
| | - M Aouni
- Laboratory of Transmissible Diseases and Biological Active substances, LR99-ES27, Faculty of Pharmacy, University of Monastir, Monastir, Tunisia
| | - J Boukadida
- Laboratory of Microbiology and Immunology, UR12SP34, Farhat Hached University Hospital, Sousse, Tunisia
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Béji-Hamza A, Khélifi-Gharbi H, Hassine-Zaafrane M, Della Libera S, Iaconelli M, Muscillo M, Petricca S, Ciccaglione AR, Bruni R, Taffon S, Equestre M, Aouni M, La Rosa G. Qualitative and Quantitative Assessment of Hepatitis A Virus in Wastewaters in Tunisia. Food Environ Virol 2014; 6:246-52. [PMID: 25129101 DOI: 10.1007/s12560-014-9163-3] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2014] [Accepted: 07/24/2014] [Indexed: 05/18/2023]
Abstract
Hepatitis A causes substantial morbidity in both industrialized and non-industrialized countries and represents an important health problem in several southern Mediterranean countries. The objectives of the study were as follows: (a) to assess the occurrence of hepatitis A virus (HAV) in Tunisia through the monitoring of urban wastewaters collected at wastewater treatment plants (WTPs); (b) to characterize environmental strains; and (c) to estimate the viral load in raw and treated sewages, in order to evaluate the potential impact on superficial waters receiving discharges. A total of 150 raw and treated wastewaters were collected from three WTPs and analyzed by both qualitative (RT-PCR/nested) and quantitative (qRT-PCR) methods. Of these, 100 (66%) were found to be positive for HAV by the qualitative assay: 68.3% in influents and 64.7% in effluents. The vast majority of HAV sequences belonged to sub-genotype IA, with 11 different strains detected found to be identical to clinical strains isolated from Tunisian patients with acute hepatitis. Five unique variants were also detected, not previously reported in clinical cases. Only two IB strains were found, confirming the rarity of this sub-genotype in this country. The results of the present study indicate a wide circulation of the pathogen in the population, most probably in the form of asymptomatic infections, a finding consistent with the classification of the country as having intermediate/high endemicity. Quantitative data showed high viral loads in influents (3.5E+05 genome copies/liter, mean value) as well as effluents (2.5E+05 genome copies/liter, mean value), suggesting that contaminated water could be a critical element in transmission.
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Affiliation(s)
- A Béji-Hamza
- Laboratory of Transmissible Diseases and Biological Active Substances, Faculty of Pharmacy, University of Monastir, Monastir, Tunisia
| | - H Khélifi-Gharbi
- Laboratory of Transmissible Diseases and Biological Active Substances, Faculty of Pharmacy, University of Monastir, Monastir, Tunisia
| | - M Hassine-Zaafrane
- Laboratory of Transmissible Diseases and Biological Active Substances, Faculty of Pharmacy, University of Monastir, Monastir, Tunisia
| | - S Della Libera
- Department of Environment and Primary Prevention, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy
| | - M Iaconelli
- Department of Environment and Primary Prevention, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy
| | - M Muscillo
- Department of Environment and Primary Prevention, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy
| | - S Petricca
- Department of Environment and Primary Prevention, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy
| | - A R Ciccaglione
- Department of Infectious, Parasitic and Immune-Mediated Diseases, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy
| | - R Bruni
- Department of Infectious, Parasitic and Immune-Mediated Diseases, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy
| | - S Taffon
- Department of Infectious, Parasitic and Immune-Mediated Diseases, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy
| | - M Equestre
- Department of Cell Biology and Neurosciences, Istituto Superiore di Sanità, Rome, Italy
| | - M Aouni
- Laboratory of Transmissible Diseases and Biological Active Substances, Faculty of Pharmacy, University of Monastir, Monastir, Tunisia
| | - G La Rosa
- Department of Environment and Primary Prevention, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161, Rome, Italy.
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9
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Béji-Hamza A, Hassine-Zaafrane M, Khélifi-Gharbi H, Della Libera S, Iaconelli M, Muscillo M, Petricca S, Ciccaglione AR, Bruni R, Taffon S, Aouni M, La Rosa G. Hepatitis E virus genotypes 1 and 3 in wastewater samples in Tunisia. Arch Virol 2014; 160:183-9. [PMID: 25307960 DOI: 10.1007/s00705-014-2251-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Accepted: 09/30/2014] [Indexed: 10/24/2022]
Abstract
Hepatitis E represents an important public-health concern throughout the world. It is one of the leading causes of hepatitis in North Africa, Asia and the Middle East. In Tunisia, the true burden of HEV infection is still unknown. The objectives of the present study were to assess the occurrence of hepatitis E virus in Tunisia through the monitoring of urban sewage and to characterize the strains identified using molecular assays. A total of 150 sewage samples (raw and treated) were collected from three wastewater treatment plants located in the regions of Monastir and Mahdia and analyzed by nested RT-PCR using a qualitative assay targeting the methyltransferase gene in ORF1. Of these, only three samples (2 %) were found to be positive for HEV, one belonging to genotype 1 and two to genotype 3. The results of the present study indicate a low level of virus excretion among the Tunisian population. Both genotypes 1 and 3 are circulating in this country, however, possibly causing sporadic infections. The presence of the zoonotic genotype 3, known to be transmitted to humans mainly by swine and demonstrated in Tunisia for the first time in this work, raises the question of possible reservoir species, since pork products are not consumed in this country, pigs are not bred, and wild boar is not endemic. Further studies will be needed to gather information on the occurrence and diversity of HEV strains circulating among humans and animals in Tunisia, and on possible animal reservoirs.
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Affiliation(s)
- A Béji-Hamza
- Laboratory of Transmissible Diseases and Biological Active Substances, Faculty of Pharmacy, University of Monastir, Monastir, Tunisia
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10
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Hassine-Zaafrane M, Ben Salem I, Sdiri-Loulizi K, Kaplon J, Bouslama L, Aouni Z, Sakly N, Pothier P, Aouni M, Ambert-Balay K. Distribution of G (VP7) and P (VP4) genotypes of group A bovine rotaviruses from Tunisian calves with diarrhoea. J Appl Microbiol 2014; 116:1387-95. [DOI: 10.1111/jam.12469] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2013] [Revised: 01/30/2014] [Accepted: 02/03/2014] [Indexed: 11/28/2022]
Affiliation(s)
- M. Hassine-Zaafrane
- Laboratory of Infectious Diseases and Biological Agents; Faculty of Pharmacy; University of Monastir; Monastir Tunisia
- National Reference Center for Enteric Viruses; Laboratory of Virology; CHU of Dijon; 2 Rue Angélique Ducoudray; University of Bourgogne; Dijon France
| | - I. Ben Salem
- Laboratory of Infectious Diseases and Biological Agents; Faculty of Pharmacy; University of Monastir; Monastir Tunisia
| | - K. Sdiri-Loulizi
- Laboratory of Infectious Diseases and Biological Agents; Faculty of Pharmacy; University of Monastir; Monastir Tunisia
- National Reference Center for Enteric Viruses; Laboratory of Virology; CHU of Dijon; 2 Rue Angélique Ducoudray; University of Bourgogne; Dijon France
| | - J. Kaplon
- National Reference Center for Enteric Viruses; Laboratory of Virology; CHU of Dijon; 2 Rue Angélique Ducoudray; University of Bourgogne; Dijon France
| | - L. Bouslama
- Laboratory of Infectious Diseases and Biological Agents; Faculty of Pharmacy; University of Monastir; Monastir Tunisia
| | - Z. Aouni
- Laboratory of Infectious Diseases and Biological Agents; Faculty of Pharmacy; University of Monastir; Monastir Tunisia
| | - N. Sakly
- Laboratory of Immunology; University Hospital Fattouma Bourguiba; Monastir Tunisia
| | - P. Pothier
- National Reference Center for Enteric Viruses; Laboratory of Virology; CHU of Dijon; 2 Rue Angélique Ducoudray; University of Bourgogne; Dijon France
| | - M. Aouni
- Laboratory of Infectious Diseases and Biological Agents; Faculty of Pharmacy; University of Monastir; Monastir Tunisia
| | - K. Ambert-Balay
- National Reference Center for Enteric Viruses; Laboratory of Virology; CHU of Dijon; 2 Rue Angélique Ducoudray; University of Bourgogne; Dijon France
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11
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Boughabi S, Benesser Alaoui H, Harmouche H, Maamar M, Adnaoui M, Aouni M, Tazi Mezalek Z. La cholangite à IgG4 : une cause inhabituelle de cholestase chez un sujet jeune. Rev Med Interne 2013. [DOI: 10.1016/j.revmed.2013.03.180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Charadi H, Harmouche H, Maamar M, Aouni M, Adnaoui M, Tazi Mezalek Z. Tétraparésie hypokaliémique révélant un syndrome de Gougerot-Sjögren : deux nouvelles observations. Rev Med Interne 2013. [DOI: 10.1016/j.revmed.2013.03.120] [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: 10/26/2022]
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13
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Bachir H, Harmouche H, Maamar M, Adnaoui M, Aouni M, Tazi Mezalek Z. Myélome multiple associé à un lupus érythémateux systémique : trois cas. Rev Med Interne 2013. [DOI: 10.1016/j.revmed.2013.03.087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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14
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Mokhtari W, Nsaibia S, Gharbi A, Aouni M. Real-time PCR using SYBR Green for the detection of Shigella spp. in food and stool samples. Mol Cell Probes 2013; 27:53-9. [DOI: 10.1016/j.mcp.2012.09.002] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2012] [Revised: 09/22/2012] [Accepted: 09/25/2012] [Indexed: 11/28/2022]
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Benesser Alaoui H, Harmouche H, Maamar M, Elalj A, Adnaoui M, Tazi Mezalek Z, Aouni M. Apport de la tomographie par émission de positons dans les syndromes inflammatoires inexpliqués : à propos de 13 cas. Rev Med Interne 2012. [DOI: 10.1016/j.revmed.2012.10.309] [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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Maamar M, Tazi Mezalek Z, Mounfaloti W, Harmouche H, Adnaoui M, Aouni M. Drépanocytose et lupus systémique : une association rare. Rev Med Interne 2012. [DOI: 10.1016/j.revmed.2012.03.342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Mokhtari W, Nsaibia S, Majouri D, Ben Hassen A, Gharbi A, Aouni M. Detection and characterization of Shigella species isolated from food and human stool samples in Nabeul, Tunisia, by molecular methods and culture techniques. J Appl Microbiol 2012; 113:209-22. [DOI: 10.1111/j.1365-2672.2012.05324.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [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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Herrak L, Bouchikh M, Maidi M, Fennane H, Ouchen F, Ammouri W, Aouni M, Mahassini N, Benosmane A, El Fassy Fihri M. Masse pulmonaire révélant une leucémie myéloïde monocytaire chronique. Rev Mal Respir 2012. [DOI: 10.1016/j.rmr.2011.10.684] [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: 11/30/2022]
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Lamzaf L, Harmouche H, Maamar M, Adnaoui M, Aouni M, Tazi Mezalek Z. [Kikuchi-Fujimoto's disease: Report of 4 cases and literature review]. Rev Laryngol Otol Rhinol (Bord) 2012; 133:207-211. [PMID: 24006828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
INTRODUCTION Kikuchi-Fujimoto's disease or histiocytic necrotizing lymphadenitis is a benign disease predominantly occurring in young women which etiology remains unknown and revealed by cervical lymphadenitis and/or prolonged fever. OBSERVATIONS This report describes a survey of four patients who developed Kikuchi's lymphadenitis occurring concomitantly with LES in one case and actinomycosis in another case. The definite diagnosis is usually made through histopathological examination of a lymph node biopsy. The evolution was favorable under corticosteroid therapy in two patients, antibiotics in the third and only antipyretic in the fourth. CONCLUSION The authors bring report through these three observations, the diagnostic difficulties, the therapeutic means of the disease of Kikuchi, as well as its evolutionary aspects.
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Affiliation(s)
- L Lamzaf
- CHU Ibn Sina Rabat, Service de Médecine Interne, Rabat, Maroc.
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Riabi S, Gaaloul I, Harrath R, Aouni M. Persistent infection of human intestinal Caco-2 cell line by Coxsackieviruses B. ACTA ACUST UNITED AC 2011; 60:347-51. [PMID: 22178701 DOI: 10.1016/j.patbio.2011.11.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2010] [Accepted: 11/15/2011] [Indexed: 10/14/2022]
Abstract
Coxsackieviruses B (CV-B, Picornaviridae family, genus Enterovirus) are characterized by their ability to cause cytopathic effects in tissue culture. These viruses are considered highly cytolytic, but can establish persistence/latency in susceptible cells, indicating that a regulatory mechanism may exist to shut off viral protein synthesis and replication under certain situations. The persistence of coxsackieviral B RNA is of great interest because of its implication in the pathogenesis of several chronic human diseases. However, a few studies have dealt with the persistence of these viruses at the intestinal level. The aim of this study is to test the capacity of the six CV-B serotypes to establish persistent infection in human intestinal Caco-2 cell line. Ten CV-B isolates, including CV-B3 prototype strain (Nancy) and a recombinant isolate (B3-B4), were tested. Six CV-B isolates were found to establish persistent infections in Caco-2 cell line. Persistent replication was proved by the detection of viral RNA from cell cultures, VP1 capsid protein detection by immunofluorescence (IF) staining, and the release of infectious particles up to two months and a half after infection without any obvious cytolysis. In addition, our results suggest that the establishment of a persistent infection is serotype-independent.
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Affiliation(s)
- S Riabi
- Laboratory of Transmissible Diseases, Faculty of Pharmacy, Monastir, Tunisia.
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Mejri MB, Baccar H, Ktari T, Aouni M, Abdelghani A. Detection of E.Coli Bacteria Using Impedance Spectroscopy and Surface Plasmon Resonance Imaging Based Biosensor. ACTA ACUST UNITED AC 2011. [DOI: 10.1166/sl.2011.1747] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Bachir H, Ammouri W, Harmouche H, Maamar M, Adnaoui M, Aouni M, Tazi Mezalek Z. Les manifestations neuropsychiatriques au cours du lupus systémique. Étude monocentrique de 95 cas. Rev Med Interne 2011. [DOI: 10.1016/j.revmed.2011.10.342] [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: 10/15/2022]
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23
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Bennesser Alaoui H, Bachir H, Harmouche H, Maamar M, Adnaoui M, Aouni M, Tazi Mezalek Z. Thromboses veineuses révélant une maladie cœliaque. À propos de trois cas. Rev Med Interne 2011. [DOI: 10.1016/j.revmed.2011.10.084] [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: 10/15/2022]
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Charradi H, Ammouri W, Harmouche H, Maamar M, Adnaoui M, Aouni M, Tazi Mezalek Z. L’atteinte neuropsychiatrique au cours de la maladie de Behçet. Étude monocentrique de 43 malades. Rev Med Interne 2011. [DOI: 10.1016/j.revmed.2011.10.314] [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: 10/15/2022]
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25
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Hannachi N, Ben Fredj N, Samoud S, Ferjani A, Khlif A, Boughammoura L, Soussi S, Aouni M, Skouri H, Boukadida J. [Seroprevalence and risk factors of human herpes virus 8 infection in Central-East Tunisia]. ACTA ACUST UNITED AC 2011; 60:282-6. [PMID: 22115818 DOI: 10.1016/j.patbio.2011.10.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2010] [Accepted: 10/14/2011] [Indexed: 10/15/2022]
Abstract
OBJECTIVE Epidemiology of human herpesvirus 8 (HHV8) is still unknown in Tunisia. We aimed to assess the prevalence of HHV8 infection in adults and children from Central-East Tunisia and in patients with high risk of parenteral or sexual infection. METHODS We enrolled 553 subjects: 116 blood donors, 100 pregnant women, 100 children, 50 subjects with sexually transmitted infections with positive HIV serology and 50 other without HIV infection, 107 multitransfused patients and 30 kidney transplant patients. Antibodies against HHV8 were tested using a sensitive indirect immunofluorescence assay. RESULTS The seroprevalence of HHV8 was found to be 13.8% in blood donors, 13% in pregnant women and 12% in children. In healthy adult population, no association was found between HHV8 seropositivity and sex, sociodemographic characteristics, parenteral risk factors or serological markers of hepatitis B. Rates of HHV8 infection were significantly higher in patients having high-risk sexual behavior with or without HIV infection (P<10(-4)), in polytransfused patients (P<10(-4)) and in patients with kidney transplantation (P=0.001). CONCLUSION Our findings suggest that HHV8 infection is widespread in Central-East Tunisia such as in the Mediterranean area. HHV8 infection appears to be acquired early in life, probably through saliva. HHV8 transmission by blood transfusion, subject of controversy in literature, is well established in our study. Early screening of this infection should be considered in populations with high risk of Kaposi's sarcoma in our areas.
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Affiliation(s)
- N Hannachi
- Laboratoire de microbiologie-immunologie, UR02SP13, CHU Farhat Hached, avenue Ibn Jazzar, 4000 Sousse, Tunisie.
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Miladi S, Abid N, Debarnôt C, Damak M, Canard B, Aouni M, Selmi B. In vitro antiviral activities of extracts derived from Daucus maritimus seeds. Nat Prod Res 2011; 26:1027-32. [PMID: 21895456 DOI: 10.1080/14786419.2010.550263] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
The antiviral activities of extracts from Daucus maritimus seeds were investigated against the reverse transcriptase of human immunodeficiency virus (HIV) type 1 and a panel of RNA-dependent RNA polymerases of dengue virus, West Nile virus (WNV) and hepatitis C virus (HCV). The extracts showed moderate to potent inhibition rates against the four viral polymerases. The ethyl acetate extract exhibited a potent inhibitory effect against WNV's RdRp, with an IC₅₀ value of 8 µg mL⁻¹. The F₂ fraction exhibited potent inhibitory activity against WNV and HCV's RdRps, with IC₅₀ values 1 and 5 µg mL⁻¹, respectively. The P₂ fraction also showed potent inhibitory effects on WNV and HCV's RdRps, with IC₅₀ values 2.7 and 4 µg mL⁻¹, respectively. The results suggest that these extracts are candidates for the development of new anti-WNV RpDp and anti-HCV RpDp agents.
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Affiliation(s)
- S Miladi
- Laboratoire de Chimie des Substances Naturelles, Faculté des Sciences de Sfax- BP 1171, 3000 Sfax, Tunisia
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Bachir H, Harmouche H, Maamar M, Adnaoui M, Aouni M, Mezalek ZT. Amélioration d’une atteinte vasculaire sous interféron au cours d’une maladie d’Erdheim Chester. Un nouveau cas. Rev Med Interne 2011. [DOI: 10.1016/j.revmed.2011.03.288] [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: 11/17/2022]
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Marzouk B, Marzouk Z, Fenina N, Bouraoui A, Aouni M. Anti-inflammatory and analgesic activities of Tunisian Citrullus colocynthis Schrad. immature fruit and seed organic extracts. Eur Rev Med Pharmacol Sci 2011; 15:665-672. [PMID: 21796871] [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: 05/31/2023]
Abstract
BACKGROUND AND OBJECTIVES Inflammations and immune-related diseases including rheumatoid arthritis are widespread in the entire globe. The treatment of these illnesses is mainly based on the use of synthetic and biotechnological drugs, in recent years. Tunisian traditional medicine is a potential source of new remedies namely Citrullus colocynthis Schrad. (Cucurbitaceae): endemic in southern Tunisia and used in folk medicine to treat many inflammation disorders. Our goal was to assess the in vivo analgesic and anti-inflammatory activities of Tunisian Citrullus colocynthis immature fruit and seed organic extracts (petroleum ether, chloroform, ethyl acetate, acetone and finely methanol extract). MATERIAL AND METHODS Yields of prepared organic extracts are gravimetrically determined. For the analgesic and anti-inflammatory activities, we have used respectively, the acetic acid writhing test in mice and the carrageenan-induced paw edema assay in rats. RESULTS AND DISCUSSION All extracts displayed an important analgesic and anti-inflammatory activities at different doses without inducing any side effects. This study has demonstrated the analgesic and anti-inflammatory activities of Citrullus colocynthis immature fruit and seed extracts. Experiment results provide scientific insight into the ancient practice of utilizing Citrullus colocynthis Schrad. as analgesic and as anti-inflammatory agents.
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Affiliation(s)
- B Marzouk
- Laboratoire des Maladies Transmissibles et Substances Biologiquement Actives, Faculth de Pharmacie, Monastir, Rue Avicenne 5000 Monastir, Tunisie.
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Sdiri-Loulizi K, Hassine M, Aouni Z, Gharbi-Khelifi H, Chouchane S, Sakly N, Neji-Guédiche M, Pothier P, Aouni M, Ambert-Balay K. Detection and molecular characterization of enteric viruses in environmental samples in Monastir, Tunisia between January 2003 and April 2007. J Appl Microbiol 2011; 109:1093-104. [PMID: 20553345 DOI: 10.1111/j.1365-2672.2010.04772.x] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
AIMS A prospective study was performed to characterize the main human enteric viruses able to persist in sewage samples and in shellfish tissues, and to establish the correlation between environmental strains and viral infantile diarrhoea observed in the same area during the same period. METHODS AND RESULTS A total of 250 sewage (raw and treated) and 60 shellfish samples were collected between January 2003 and April 2007 in Monastir region, Tunisia. Group A rotavirus (RVA) was detected in 80 (32%) sewage samples, norovirus (NoV) in 11 (4·4%) and enteric adenovirus (AdV) in 1 (0·4%). Among 60 shellfish samples collected near sewage effluents, one was contaminated by NoV (1·6%). CONCLUSION Our data represent the first documentation in Tunisia, combining gastroenteritis viruses circulating in the environment and in clinical isolates. We observed a correlation between environmental strains and those found in children suffering from gastroenteritis during the same period study. This suggests the existence of a relationship between water contamination and paediatric diarrhoea. SIGNIFICANCE AND IMPACT OF THE STUDY Our results address the potential health risks associated with transmission of human enteric viruses through water-related environmental routes. The research findings will aid in elucidating the molecular epidemiology and circulation of enteric viruses in Tunisia and in Africa, where data are rare.
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Affiliation(s)
- K Sdiri-Loulizi
- Laboratory of Infectious Diseases and Biological Agents, Faculty of Pharmacy, Monastir, Tunisia.
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Lamzaf L, Ammouri W, Berbich O, Tazi Mezalek Z, Adnaoui M, Aouni M, Harmouche H. [Ocular complications of HIV infection: experience of the Northern Excellence Pole of Morocco]. J Fr Ophtalmol 2011; 34:75-82. [PMID: 21276636 DOI: 10.1016/j.jfo.2010.10.019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2010] [Revised: 09/29/2010] [Accepted: 10/24/2010] [Indexed: 11/26/2022]
Abstract
INTRODUCTION HIV infection is associated with a wide variety of ophthalmic manifestations. The objective of this study was to identify the ocular complications of HIV/AIDS in Morocco. MATERIAL AND METHODS A retrospective study conducted in the internal medicine department of the Rabat Teaching Hospital between 1998 and 2008. All HIV-positive patients were retained for the study. Each patient had an exhaustive ocular examination. RESULTS Of 115 ophthalmologic examinations, 28 were abnormal. Twenty-seven patients had stage C HIV infection and one patient was in stage A. The ocular manifestations were: 21 cases of ocular HIV-related anomalies (microangiopathies), four cases of cytomegalovirus (CMV) retinitis, one case of toxoplasmosis chorioretinitis, one case of CMV retinitis associated with toxoplasmosis chorioretinitis, two cases of Cryptococcus neoformans infection, two cases of varicella-zoster virus (VZV) retinitis, and one case of conjunctival Kaposi sarcoma. The CD4 count average was of 86±91/mm(3). Twenty-six patients had a CD4 count lower than 200/mm(3). Progression was favorable in 85 % of the cases, with three cases of blindness: bilateral in a case of VZV retinitis and unilateral in two cases of CMV retinitis and toxoplasmosis chorioretinitis. CONCLUSION CMV infection is the main ocular opportunistic infection in our series. However, Highly Active Antiretroviral Treatment (HAART) may be the cause for the decline in the prevalence of ocular diseases and visual impairment in HIV/AIDS.
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Affiliation(s)
- L Lamzaf
- Rabat Institut, service de médecine interne, CHU Ibn Sina Rabat, rue Lamfadel-Cherkaoui, BP 6527, Rabat, Maroc.
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Bachir H, Mouatassim N, Harmouche H, Adnaoui M, Aouni M, Mezalek ZT. Une association exceptionnelle de maladie cœliaque et de syndrome des anticorps antiphospholipides. Rev Med Interne 2010. [DOI: 10.1016/j.revmed.2010.10.241] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Alaoui H, Bachir H, Harmouche H, Ammouri W, Adnaoui M, Aouni M, Mezalek Z. Les infections à cryptocoque chez les sujets non infectés par le VIH : à propos de 3 observations. Rev Med Interne 2010. [DOI: 10.1016/j.revmed.2010.10.286] [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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Mejri M, Baccar H, Baldrich E, Del Campo F, Helali S, Ktari T, Simonian A, Aouni M, Abdelghani A. Impedance biosensing using phages for bacteria detection: Generation of dual signals as the clue for in-chip assay confirmation. Biosens Bioelectron 2010; 26:1261-7. [DOI: 10.1016/j.bios.2010.06.054] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2010] [Revised: 06/09/2010] [Accepted: 06/25/2010] [Indexed: 12/01/2022]
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Marzouk B, Marzouk Z, Décor R, Mhadhebi L, Fenina N, Aouni M. Antibacterial and antifungal activities of several populations of Tunisian Citrullus colocynthis Schrad. immature fruits and seeds. J Mycol Med 2010. [DOI: 10.1016/j.mycmed.2010.05.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Sellami H, Gdoura R, Mabrouk I, Frikha-Gargouri O, Keskes L, Mallek Z, Aouni M, Hammami A. A Proposed Mouse Model to Study Male Infertility Provoked by Genital Serovar E, Chlamydia trachomatis. ACTA ACUST UNITED AC 2010; 32:86-94. [DOI: 10.2164/jandrol.109.009183] [Citation(s) in RCA: 7] [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] [Indexed: 11/22/2022]
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Baccar H, Mejri MB, Hafaiedh I, Ktari T, Aouni M, Abdelghani A. Surface plasmon resonance immunosensor for bacteria detection. Talanta 2010; 82:810-4. [PMID: 20602974 DOI: 10.1016/j.talanta.2010.05.060] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2010] [Revised: 05/28/2010] [Accepted: 05/28/2010] [Indexed: 10/19/2022]
Abstract
This work describes an approach for the development of two bacteria biosensors based on surface plasmon resonance (SPR) technique. The first biosensor was based on functionalized gold substrate and the second one on immobilized gold nanoparticles. For the first biosensor, the gold substrate was functionalized with acid-thiol using the self-assembled monolayer technique, while the second one was functionalized with gold nanoparticles immobilized on modified gold substrate. A polyclonal anti-Escherichia coli antibody was immobilized for specific (E. coli) and non-specific (Lactobacillus) bacteria detection. Detection limit with a good reproducibility of 10(4) and 10(3) cfu mL(-1) of E. coli bacteria has been obtained for the first biosensor and for the second one respectively. A refractive index variation below 5x10(-3) due to bacteria adsorption is able to be detected. The refractive index of the multilayer structure and of the E. coli bacteria layer was estimated with a modeling software.
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Affiliation(s)
- H Baccar
- Nanotechnology Laboratory, INSAT, Centre Urbain Nord, Charguia, Tunisia
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Elhani D, Bakir L, Aouni M, Passet V, Arlet G, Brisse S, Weill FX. Molecular epidemiology of extended-spectrum β-lactamase-producing Klebsiella pneumoniae strains in a university hospital in Tunis, Tunisia, 1999–2005. Clin Microbiol Infect 2010; 16:157-64. [DOI: 10.1111/j.1469-0691.2009.03057.x] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [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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El Imadi H, Tazi Mezalek Z, Alaoui H, Harmouche H, Aouni M, Adnaoui M, Maaouni A. Lorsque la maladie de Biermer s’invite chez les polyendocrinopathies auto-immunes. Rev Med Interne 2009. [DOI: 10.1016/j.revmed.2009.10.423] [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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Hamaz S, Serraj K, Tazi Mezalek Z, Harmouche H, Aouni M, Adnaoui M, Maaouni A. Sludge de la vésicule biliaire secondaire à la ceftriaxone : à propos de 2 cas. Rev Med Interne 2009. [DOI: 10.1016/j.revmed.2009.10.237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Ammouri W, Mezalek ZT, Bourkia M, Harmouche H, Hamaz S, Aouni M, Adnaoui M, Maaouni A. Les atteintes artérielles au cours de la maladie de Behçet. À propos de 29 cas. Rev Med Interne 2009. [DOI: 10.1016/j.revmed.2009.10.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Jaja Z, Tazi Mezalek Z, Alaoui H, Harmouche H, Aouni M, Adnaoui M, Maaouni A. Efficacité spectaculaire d’un traitement immunosuppresseur dans un cas de maladie de Behçet avec anévrysmes des artères pulmonaires et thrombose intracardiaque. Rev Med Interne 2009. [DOI: 10.1016/j.revmed.2009.10.185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Raffali J, Tazi Mezalek Z, Maamar M, Harmouche H, Aouni M, Adnaoui M, Maaouni A. Association maladie de Takayashu et maladie de Crohn : deux nouvelles observations. Rev Med Interne 2009. [DOI: 10.1016/j.revmed.2009.10.198] [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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Ammouri W, Harmouche H, Ainouch K, Hamaz S, Tazi Mezalek Z, Aouni M, Adnaoui M. Mastite simulant une mastite carcinomateuse associée à des calcifications sous-cutanées au cours d’un lupus systémique. À propos d’un cas. Rev Med Interne 2009. [DOI: 10.1016/j.revmed.2009.10.329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Raffali J, Harmouche H, Ainouch K, Tazi Mezalek Z, Aouni M, Adnaoui M, Maaouni A. Infarctus du myocarde : penser à la maladie de Behçet. Rev Med Interne 2009. [DOI: 10.1016/j.revmed.2009.10.170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Maamar M, Tazi Mezalek Z, Bourkia M, Harmouche H, Koffi Z, Rafali J, Aouni M, Adnaoui M, Maaouni A. Un cas exceptionnel de syndrome de Churg et Strauss et d’amylose AA. Rev Med Interne 2009. [DOI: 10.1016/j.revmed.2009.10.271] [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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Mejri MB, Marrakchi M, Baccar H, Helali S, Aouni M, Hamdi M, Jaffrezic-Renault N, Abdelghani A. Electrochemical Impedance Spectroscopy for Specific Detection of Enterovirus. ACTA ACUST UNITED AC 2009. [DOI: 10.1166/sl.2009.1168] [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: 11/23/2022]
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Serraj K, Mecili M, Aouni M, Maaouni A, Andrès E. Les thrombopénies médicamenteuses idiosyncrasiques. Rev Med Interne 2009; 30:866-71. [DOI: 10.1016/j.revmed.2009.02.024] [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] [Received: 09/23/2008] [Revised: 02/24/2009] [Accepted: 02/25/2009] [Indexed: 10/20/2022]
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Abstract
The role of enteroviruses, in particular type B coxsackieviruses (CV-B), in type 1 diabetes (T1D) pathogenesis is supported by epidemiological, clinical and experimental observations.The investigation of T1D pathogenesis benefits from the contribution of animal models called spontaneously diabetic. Among these animals the non-obese diabetic (NOD) mouse and the bio-breeding diabetes-prone (BBDP) rat present a genetic susceptibility manifested by the expression of an autoimmune diabetes similar to the pathology observed in human beings. Other models whose genetic predisposition is less known are of considerable contribution as well. Numerous major observations relative to several aspects of T1D pathogenesis in the context of CV-B infections, such as susceptibility, diabetogenicity, pancreatotropism, mechanisms of beta cells destruction and others, have been deduced thanks to investigations with animal models. Despite their limits, these models are necessary in improving our knowledge of the role of enteroviruses, like CV-B4, in the pathogenesis of T1D, and the recent advances ensuing from their contribution may have important therapeutic and preventive spin-offs.
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Affiliation(s)
- H Jaïdane
- Laboratoire de Virologie/UPRES EA3610 Pathogenèse virale du diabète de type 1, Faculté de Médecine, Université Lille 2, CHRU Lille, Centre de Biologie Pathologie et Eurasanté, CHRU Lille, 59037 Lille, France
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Tazi Mezalek Z, Rafali J, Hamaz S, Harmouche H, Aouni M, Adnaoui M. Association maladie de Biermer et anémie hémolytique auto-immune : à propos de deux cas. Rev Med Interne 2009. [DOI: 10.1016/j.revmed.2009.03.227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Tazi-Mezalek Z, Benjilali L, Mouatassim N, Harmouche H, Aouni M, Adnaoui M. Polymyosites paralysantes : à propos de 2 cas. Rev Med Interne 2009. [DOI: 10.1016/j.revmed.2009.03.189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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