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OUNI A, Sahtout W, Geudri Y, Mrabet S, Ben Aicha N, Fradi A, Sabri F, Zellama D, Azzebi A, Achour A. POS-784 DOES PRE-EMPTIVE KIDNEY TRANSPLANTATION VERSUS POST START OF DIALYSIS TRANSPLANTATION IMPROVE OUTCOMES AFTER TRANSPLANTATION? Kidney Int Rep 2022. [DOI: 10.1016/j.ekir.2022.01.820] [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] Open
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Azzabi A, THABET N, Sahtout W, Dahmen R, Mrabet S, Aounallah A, Boukadia R, Fradi A, Sabri F, Ben amor S, Zellama D, Denguezli M, Guedri Y, Achour A. POS-796 Cutaneous leishmaniasis in a kidney transplant patient: a case report. Kidney Int Rep 2022. [DOI: 10.1016/j.ekir.2022.01.832] [Citation(s) in RCA: 1] [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: 11/26/2022] Open
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HADJ BRAHIM M, Azzabi A, Sahtout W, Zalfeni A, Dahmane R, Ben Aicha N, Fradi A, Mrabet S, Sabri F, Ben Amor S, Zallema D, Guedri Y, Achour A. POS-113 COUPLE FERTILITY AFTER KIDNEY TRANSPLANTATION. Kidney Int Rep 2021. [DOI: 10.1016/j.ekir.2021.03.121] [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: 10/21/2022] Open
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ELOUAER Y, Zellama D, Mrabet S, Troudi M, Fradi A, Amor S, Ben Aicha N, Sabri F, Azzabi A, Sahtout W, Guedri Y, Achour A. POS-350 REASONS FOR FIRST NEPHROLOGY CONSULTATION IN THE ELDERLY. Kidney Int Rep 2021. [DOI: 10.1016/j.ekir.2021.03.366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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OUNI A, Guedri Y, Hadj Brahim M, Ben Aicha N, Boukadida R, Mrabet S, Sahtout W, Azzebi A, Fradi A, Ben Amor S, Sabri F, Zellama D, Achour A. POS-660 EPIDEMIOLOGY OF MECHANICAL COMPLICATIONS IN PD PATIENTS: EXPERIENCE AT SAHLOUL HOSPITAL. Kidney Int Rep 2021. [DOI: 10.1016/j.ekir.2021.03.690] [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: 10/21/2022] Open
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HADJ BRAHIM M, Guedri Y, Ouni A, Ben Amor S, Sahtout W, Mrabet S, Azzabi A, Ben Aicha N, Fradi A, Sabri F, Zallema D, Achour A. POS-112 HEMODIALYSIS EMERGENCIES : A MONOCLONAL EXPERIENCE. Kidney Int Rep 2021. [DOI: 10.1016/j.ekir.2021.03.120] [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: 11/30/2022] Open
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Ben Brahim R, Sahtout W, Azzabi A, Ben Aicha N, Mrabet S, Fradi A, Sabri F, Zallema D, Guedri Y, Achour A. POS-781 TUBERCULOSIS IN KIDNEY TRANSPLANT RECIPIENTS: EXPERIENCE OF NEPHROLOGY DEPARTEMENT OF SAHLOUL HOSPITAL. Kidney Int Rep 2021. [DOI: 10.1016/j.ekir.2021.03.813] [Citation(s) in RCA: 1] [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: 11/29/2022] Open
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DZIRI S, Mrabet S, Dahmane R, Azzabi A, Sahtout W, Ben Aicha N, Fradi A, Boukadida R, Sabri F, Guedri Y, Zallema D, Achour A. POS-217 RENAL AMYLOIDOSIS IN AN EXCEPTIONNAL ASSOCIATION OF GLANZMANN’S THROMBASTHENIA AND CROHN'S DISEASE. Kidney Int Rep 2021. [DOI: 10.1016/j.ekir.2021.03.230] [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: 10/21/2022] Open
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OUNI A, Guedri Y, Azzebi A, Hadj Brahim M, Mrabet S, Sahtout W, Fradi A, Ben Aicha N, Boukadida R, Ben Amor S, Sabri F, Zellama D, Achour A. POS-659 PATIENT AND TECHNIQUE SURVIVAL OF DIABETIC PATIENTS ON PEERITONEAL DIALYSIS. Kidney Int Rep 2021. [DOI: 10.1016/j.ekir.2021.03.689] [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: 10/21/2022] Open
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EL MEKNASSI I, Sahtout W, Zellama D, Azzabi A, Ben Aicha N, Mrabet S, Fradi A, Sabri F, Ben Amor S, Guedri Y, Achour A. POS-786 PLASMAPHERESIS THERAPY IN KIDNEY TRANSPLANT PATIENTS: A SINGLE CENTER EXPERIENCE. Kidney Int Rep 2021. [DOI: 10.1016/j.ekir.2021.03.818] [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: 10/21/2022] Open
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OUNI A, Geudri Y, Mrabet S, Sahtout W, Hadj Brahim M, Azzabi A, Fradi A, Ben Aicha A, Boukadida R, Ben Amor S, Sabri F, zellama D, Achour A. POS-661 PERITONEAL DIALYSIS TECHNIQUE FAILURE : INCIDENCE AND PREDICTORS. Kidney Int Rep 2021. [DOI: 10.1016/j.ekir.2021.03.691] [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: 10/21/2022] Open
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Azzouz M, Guedri Y, Sahtout W, Azzabi A, Mrabet S, Fradi A, Ben Aicha N, Sabri F, Ben Amor S, Zellama D, Abdellatif A. SAT-281 DYSLIPIDEMIA IN PERITONEAL DIALYSIS. Kidney Int Rep 2020. [DOI: 10.1016/j.ekir.2020.02.299] [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: 10/24/2022] Open
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Azzouz M, Sahtout W, Azzabi A, Ben aicha N, Fradi A, Mrabet S, Sabri F, Ben Amor S, Zellama D, Abdellatif A. SUN-327 SUCCESSFUL PREGNANCY AFTER KIDNEY TRANSPLANTATION: EXPERIENCE OF SAHLOUL HOSPITAL DE SOUSSE. Kidney Int Rep 2020. [DOI: 10.1016/j.ekir.2020.02.865] [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: 10/24/2022] Open
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Raja B, Zellama D, Azzabi A, Mrabet S, Abdessaied N, Sahtout W, Ben Aicha N, Fradi A, Ben Amor S, Sabri F, Guedri Y, Mokni M, Achour A. SUN-441 A CLINICAL ANALYSIS OF LIGHT-CHAIN AMYLOIDOSIS WITH RENAL INVOLVEMENT. Kidney Int Rep 2020. [DOI: 10.1016/j.ekir.2020.02.981] [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: 10/24/2022] Open
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Azzouz M, Azzabi A, Sahtout W, Gammoudi R, Guedri Y, Ben Aicha N, Aounallah A, Mrabet S, Fradi A, Sabri F, Ben Amor S, Zellama D, Denguezli M, Abdellatif A. SUN-328 DERMATOLOGIC COMPLICATIONS AFTER KIDNEY TRANSPLANTATION. Kidney Int Rep 2020. [DOI: 10.1016/j.ekir.2020.02.866] [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: 10/24/2022] Open
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Raja B, Zellama D, Ben Aicha N, Sahtout W, Abdessaied N, Azzabi A, Mrabet S, Fradi A, Ben Amor S, Sabri F, Guedri Y, Mokni M, Achour A. SUN-438 AA AMYLOIDOSIS: A RARE COMPLICATION OF CHRONIC LEG ULCER. Kidney Int Rep 2020. [DOI: 10.1016/j.ekir.2020.02.978] [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] Open
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Abdellaoui I, Azzabi A, Sahtout W, Sabri F, Hmida W, Achour A. Short- and long-term follow-up of living kidney donors. Saudi J Kidney Dis Transpl 2019; 30:401-420. [PMID: 31031377 DOI: 10.4103/1319-2442.256848] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Living-donor kidney transplantation is a well-established treatment of end-stage renal disease in Tunisia. Over the years, concerns have increased about the harmlessness of kidney donation. This longitudinal single center study was carried out to evaluate the safety of nephrectomy as well as further medical and surgical outcomes among donors. We collected and analyzed clinical, biological, biochemical and kidney size data at the time of nephrectomy and at M1, M3, M6, Y1, Y2, and Y4 after donation measured by ultrasound. All donor nephrectomies performed in the nephrology and transplantation unit of Sahloul Hospital of Sousse since October 2006 were included. Criteria of exclusion were lost to follow-up or lack of complete data. Of the 106 donors (66 females and 40 males), 92 donors were included in the follow-up analysis after following exclusion criteria. The mean age at the time of nephrectomy was 42.8 ± 10 years with the sex ratio 0.6. and 27% of our donors were mothers. Twenty-two percent of the donors were obese and 4% were hypertensive. The median initial glomerular filtration rate (GFR) was 105 mL/min/1.73 m2. The surgical approach was costal lumbotomy in 96% of cases and laparoscopy for four cases. The kidneys were removed from the left side in 93% of cases. Postoperative mortality was zero and early postoperative morbidity was low. The median duration of hospital stay was nine days. During follow-up, 14% attended all recommended visits. The median follow-up duration was 26 months. After two years post donation, the prevalence of HTN was 28% and obesity was 26%. The prevalence of GFR decline (50-59 mL/min) was 14% using formula by modification of diet in renal disease. None of our donors reached stage 4 or 5 CKD. Twelve had proteinuria and one donor had diabetes, a comparable prevalence of morbidities to the general population.
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Affiliation(s)
- Imen Abdellaoui
- Nephrology, Dialysis and Transplantation Department, Sahloul University Hospital of Sousse, Tunisia
| | - A Azzabi
- Nephrology, Dialysis and Transplantation Department, Sahloul University Hospital of Sousse, Tunisia
| | - W Sahtout
- Nephrology, Dialysis and Transplantation Department, Sahloul University Hospital of Sousse, Tunisia
| | - F Sabri
- Nephrology, Dialysis and Transplantation Department, Sahloul University Hospital of Sousse, Tunisia
| | - W Hmida
- Urology Department, Sahloul University Hospital of Sousse, Tunisia
| | - A Achour
- Nephrology, Dialysis and Transplantation Department, Sahloul University Hospital of Sousse, Tunisia
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Ben Lasfar L, Guedri Y, Mrabet S, Zallema D, Sahtout W, Azzebi A, Toumi S, Manel C, Amor S, Sabri F, Achour A. Péritonite en dialyse péritonéale : aspects microbiologiques, causes et devenir des patients. Une expérience de 10 ans. Nephrol Ther 2017. [DOI: 10.1016/j.nephro.2017.08.142] [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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Sabri F, Prados A, Muñoz-Fernández R, Lantto R, Fernandez-Rubio P, Nasi A, Amu S, Albert J, Olivares EG, Chiodi F. Impaired B cells survival upon production of inflammatory cytokines by HIV-1 exposed follicular dendritic cells. Retrovirology 2016; 13:61. [PMID: 27596745 PMCID: PMC5011926 DOI: 10.1186/s12977-016-0295-4] [Citation(s) in RCA: 9] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Accepted: 08/15/2016] [Indexed: 02/07/2023] Open
Abstract
Background Follicular dendritic cells (FDCs) are important components in the organization of germinal centers in lymphoid tissue where, following antigen presentation, B cells differentiate into memory B cells. The possibility of establishing primary cell lines from FDCs isolated from lymphoid tissue paved the way for characterization of FDC biological properties. We exposed primary FDC cell lines to HIV-1 strains in vitro and studied changes in the chemo-attractive properties of FDCs and release of inflammatory cytokines. Results FDC lines expressed several known and putative HIV-1 receptors; viral genome was amplified in HIV-1 exposed FDCs which released low levels of p24 HIV-1 protein in culture supernatants, but were not definitely proven to be productively infected. Exposure of FDCs to HIV-1 strains did not change the expression of markers used to characterize these cells. HIV-1 exposed FDCs, however, changed the expression of chemo-attractants involved in cell recruitment at inflammatory sites and increased the production of several inflammatory cytokines. The inflammatory milieu created upon HIV-1 exposure of FDCs led to impaired B cell survival in vitro and reduced Ig production.
Conclusions FDC lines exposed to different HIV-1 strains, although not able to support productive HIV-1 replication, show an increased production of inflammatory cytokines. Our in vitro model of interactions between HIV-1 exposed FDC lines and B cells suggest that exposure of FDCs to HIV-1 in vivo can contribute to inflammation within germinal centers and that this pathological event may impair B cell survival and contribute to impaired B cell responses during HIV-1 infection. Electronic supplementary material The online version of this article (doi:10.1186/s12977-016-0295-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Farideh Sabri
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Nobels väg 16, 17177, Stockholm, Sweden
| | - Alejandro Prados
- Unidad de Immunologia, Instituto de Biopatologia y Medicina Regenerativa, Complejo Hospitalario Universitario de Granada, Granada, Spain
| | - Raquel Muñoz-Fernández
- Unidad de Immunologia, Instituto de Biopatologia y Medicina Regenerativa, Complejo Hospitalario Universitario de Granada, Granada, Spain
| | - Rebecka Lantto
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Nobels väg 16, 17177, Stockholm, Sweden
| | - Pablo Fernandez-Rubio
- Unidad de Immunologia, Instituto de Biopatologia y Medicina Regenerativa, Complejo Hospitalario Universitario de Granada, Granada, Spain
| | - Aikaterini Nasi
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Nobels väg 16, 17177, Stockholm, Sweden
| | - Sylvie Amu
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Nobels väg 16, 17177, Stockholm, Sweden
| | - Jan Albert
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Nobels väg 16, 17177, Stockholm, Sweden.,Department of Clinical Microbiology, Karolinska University Hospital, Stockholm, Sweden
| | - Enrique Garcia Olivares
- Unidad de Immunologia, Instituto de Biopatologia y Medicina Regenerativa, Complejo Hospitalario Universitario de Granada, Granada, Spain
| | - Francesca Chiodi
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Nobels väg 16, 17177, Stockholm, Sweden.
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Amor S, Zellama D, Safa N, Guedri Y, Mrabet S, Azzebi A, Sahtout W, Sabri F, Achour A. Facteurs prédictifs de survenue d’une hypertrophie ventriculaire gauche chez les hémodialysés chroniques. Nephrol Ther 2015. [DOI: 10.1016/j.nephro.2015.07.079] [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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Boukadida R, Azzabi A, Guedri Y, Mrabet S, Sahtout W, Safa N, Sabri F, Omor SB, Zellama D, Achour A. Atteintes rénales au cours des hémoglobinopathies. Nephrol Ther 2015. [DOI: 10.1016/j.nephro.2015.07.389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Amor S, Zellama D, Safa N, Abdellaoui I, Bellasfer L, Guedri Y, Mrabet S, Sahtout W, Sabri F, Azzebi A, Achour A. Description des anomalies échocardiographiques retrouvées chez des patients en hémodialyse chronique. Nephrol Ther 2015. [DOI: 10.1016/j.nephro.2015.07.077] [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: 11/26/2022]
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Azzabi A, Belkhiria M, Zellama D, Guedri Y, Sahtout W, Nouira S, Mrabet S, Sabri F, Ben Amor S, Dogui J, Bel Arbia A, Achour A. La stérilisation des membranes d’hémodialyse par vapeur d’eau a un effet antioxydant. Nephrol Ther 2014. [DOI: 10.1016/j.nephro.2014.07.073] [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: 10/24/2022]
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Achour A, Bel Arbia A, Sahtout W, Guedri Y, Mrabet S, Azzabi A, Nouira S, Sabri F, Ben Amor S, Zellama D. Expérience clinique de l’utilisation du sulodexide, du captopril et leur combinaison dans le traitement de patients avec néphropathie diabétique. Nephrol Ther 2013. [DOI: 10.1016/j.nephro.2013.07.005] [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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Belkhir W, Belarbia A, Guedri Y, Azzabi A, Mrabet S, Sahtout W, Nouira S, Amor S, Sabri F, Zellama D, Achour A. Analyse comparative des biomarqueurs de métabolisme des glucides et des lipides chez les patients non diabétiques en dialyse péritonéale et en hémodialyse. Nephrol Ther 2013. [DOI: 10.1016/j.nephro.2013.07.285] [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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Amor S, Belarbia A, Zellama D, Handous I, Sahtout W, Mrabet S, Sabri F, Azzabi A, Nouira S, Achour A. Hypotension intradialytique chez les patients hémodialysés chroniques. Nephrol Ther 2013. [DOI: 10.1016/j.nephro.2013.07.247] [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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Guedri Y, Belarbia A, Azzabi A, Zellama D, Sahtout W, Mrabet S, Sabri F, Achour A. Association colobome papillaire et insuffisance rénale : à propos d’une observation. Nephrol Ther 2012. [DOI: 10.1016/j.nephro.2012.07.182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Mrabet S, Agrebi S, Mama N, Zellama D, Belarbia A, Guedri Y, Sahtout W, Azzabi A, Sabri F, Achour A. Exploration des fistules artérioveineuses en hémodialyse : apport du scanner multibarettes et revue iconographique. Nephrol Ther 2012. [DOI: 10.1016/j.nephro.2012.07.226] [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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Guedri Y, Agrebi S, Belarbia A, Zellama D, Mrabet S, Sahtout W, Azzabi A, Sabri F, Hadj Fraj K, Chouchene M, Achour A. Évaluation de la qualité vie en dialyse péritonéale. Nephrol Ther 2012. [DOI: 10.1016/j.nephro.2012.07.058] [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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Guedri Y, Barreh S, Zellama D, Belarbia A, Mrabet S, Sahtout W, Azzabi A, Sabri F, Hadj Fraj K, Chouchene M, Achour A. Profil phosphocalcique des patients traités par dialyse péritonéale : étude monocentrique à propos de 43 cas. Nephrol Ther 2012. [DOI: 10.1016/j.nephro.2012.07.264] [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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Guedri Y, Zellama D, Belarbia A, Mrabet S, Sahtout W, Azzabi A, Sabri F, Hadj Fraj K, Chouchene M, Achour A. Évaluation de l’adéquation en dialyse péritonéale : étude à propos de 35 cas. Nephrol Ther 2012. [DOI: 10.1016/j.nephro.2012.07.234] [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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Boussaadia I, Belarbia A, Guedri Y, Zellama D, Sahtout W, Sabri F, Achour A. Le syndrome de Klippel Feil et atteinte rénale : à propos de deux cas. Nephrol Ther 2011. [DOI: 10.1016/j.nephro.2011.07.364] [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: 10/17/2022]
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Sahtout W, Hmida W, Azzabi A, Bel Arbia A, Mrabet S, Zellama D, Guedri Y, Sabri F, Jaidane M, Ben Sorba N, Mosbah F, Achour A. Troubles sexuels chez les insuffisantes rénales chroniques dialysés et chez les transplantés rénaux : à propos de 137 cas. Nephrol Ther 2011. [DOI: 10.1016/j.nephro.2011.07.303] [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: 10/17/2022]
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Zellama D, Fradi M, Belarbia A, Azzabi A, Guedri Y, Mrabet S, Sahtout W, Sabri F, Yaacoubi T, Mokni M, Achour A. Aspects histologiques de la néphropathie lupique : à propos de 47 cas. Nephrol Ther 2011. [DOI: 10.1016/j.nephro.2011.07.362] [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: 10/17/2022]
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Belarbia A, Boussaadia I, Azzebi A, Zellama D, Guedri Y, Sahtout W, Sabri F, Achour A. Ponction biopsies rénales : à propos de 311 cas. Nephrol Ther 2011. [DOI: 10.1016/j.nephro.2011.07.366] [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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Zellama D, Barhoumi W, Belarbia A, Azzabi A, Guedri Y, Mrabet S, Sahtout W, Boumiiza R, Sabri F, Achour A. Étude de la cinétique de la glycémie au cours d’une séance d’hémodialyse avec un bain dépourvu de glucose. Nephrol Ther 2011. [DOI: 10.1016/j.nephro.2011.07.126] [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: 10/17/2022]
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Zellama D, Fradi M, Azzabi A, Belarbia A, Guedri Y, Mrabet S, Sahtout W, Sabri F, Achour A. Évaluation des troubles du métabolisme minéral et osseux dans une population de patients hémodialysés, selon les recommandations des KDIGO et KDOQI. Nephrol Ther 2011. [DOI: 10.1016/j.nephro.2011.07.170] [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: 10/17/2022]
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Cagigi A, Nilsson A, Levitsky V, Sabri F. Cytotoxic T-lymphocytes secrete soluble factors that induce caspase-mediated apoptosis in glioblastoma cell lines. J Neuroimmunol 2010; 225:34-42. [PMID: 20483178 DOI: 10.1016/j.jneuroim.2010.04.009] [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] [Subscribe] [Scholar Register] [Received: 12/22/2009] [Revised: 04/13/2010] [Accepted: 04/14/2010] [Indexed: 10/19/2022]
Abstract
We have previously shown that factors secreted by activated CTLs induce apoptosis in a panel of glioblastoma lines. In this study, we analyzed the expression of death receptors, activation of caspases and mRNA expression of 96 apoptotic genes in glioblastoma lines either sensitive or resistant to supernatant of activated CTLs. Our results indicate that exposure to supernatant triggers several pathways of caspase activation in glioblastoma lines involved in the initiation of both extrinsic and intrinsic apoptosis. High steady-state levels of Bcl-2 were identified as potentially accounting for the resistance of a proportion of glioblastoma lines to factors secreted by activated CTLs.
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Affiliation(s)
- Alberto Cagigi
- Department of Laboratory Medicine, Division of Clinical Immunology, Karolinska University Hospital Huddinge, Stockholm, Sweden.
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Onishchenko N, Karpova N, Sabri F, Castrn E, Ceccatelli S. Long-lasting depression-like behavior and epigenetic changes of BDNF gene expression induced by perinatal exposure to methylmercury. J Neurochem 2008; 106:1378-87. [DOI: 10.1111/j.1471-4159.2008.05484.x] [Citation(s) in RCA: 200] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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40
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Bereczky-Veress B, Lidman O, Sabri F, Bednar I, Granath F, Bergström T, Spenger C, Grandien A, Olsson T, Piehl F, Diez M, Sköldenberg B. Host strain-dependent difference in susceptibility in a rat model of herpes simplex type 1 encephalitis. J Neurovirol 2008; 14:102-18. [DOI: 10.1080/13550280701883832] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Abstract
Manganese is an essential nutrient for humans that has to be maintained at proper levels for normal brain functioning. However, manganese also acts as a toxicant to the brain, and several studies have linked exposure to excessive manganese to neurotoxicity in adults. A recent report has suggested that ingesting high doses of manganese via drinking water can impede intellectual functions in children. It is known that during development, the nervous system is particularly vulnerable to different types of injuries and toxicants. Neural stem cells (NSCs) play an essential role in both the developing nervous system and the adult brain where the capacity for self-renewal may be important. In the present study, we have used NSCs to investigate the molecular mechanisms involved in manganese developmental neurotoxicity. The results show that primary cultures of rat embryonic cortical NSCs as well as the murine-derived multipotent NSC line C17.2 undergo apoptotic cell death via a mitochondrial-mediated pathway in response to manganese. Exposed cells exhibit typical apoptotic features, such as chromatin condensation and cell shrinkage, mitochondrial cytochrome c release, activation of caspase-3, and caspase-specific cleavage of the endogenous substrate poly (ADP-ribose) polymerase. In addition, our data also show that reactive oxygen species formation plays a role in the onset of manganese toxicity in NSCs.
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Affiliation(s)
- Christoffer Tamm
- Division of Toxicology and Neurotoxicology, Institute of Environmental Medicine, Karolinska Institutet, SE-171 77 Stockholm, Sweden
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Sabri F, Chiodi F, Piret J, Wei C, Major E, Westermark B, Masucci MG, Levitsky V. Soluble factors released by virus specific activated cytotoxic T-lymphocytes induce apoptotic death of astroglioma cell lines. Brain Pathol 2006; 13:165-75. [PMID: 12744470 PMCID: PMC8095744 DOI: 10.1111/j.1750-3639.2003.tb00016.x] [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] [Indexed: 01/12/2023] Open
Abstract
Astrocytomas and astrogliomas represent the most common types of primary tumors in human central nervous system and are associated with high mortality due to the absence of efficient therapy. Here we demonstrate that, upon antigen-specific activation, cytotoxic T-lymphocytes (CTLs) secrete products that inhibit proliferation and induce apoptosis in a significant proportion of astroglioma cell lines. This effect is tumor specific in that normal cultured astrocytes do not develop apoptotic changes upon exposure to supernatant of activated CTLs. Experiments with purified lymphokines and lymphokine specific blocking antibodies indicate that synergistic activities of tumor necrosis factor (TNF)-alpha and interferon (INF)-gamma are required for the apoptosis inducing effect on some astroglioma cell lines. However, this effect appears to be dependent on additional factors produced by activated CTLs. Our results suggest that local application of factors released by activated CTLs or induction of CTL migration and activation in the tumor site may have a therapeutic effect in patients with astrogliomas.
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Affiliation(s)
- Farideh Sabri
- Microbiology and Tumor Biology Center, Karolinska Institute, Stockholm, Sweden
| | - Francesca Chiodi
- Microbiology and Tumor Biology Center, Karolinska Institute, Stockholm, Sweden
| | - Jean‐Pascal Piret
- Microbiology and Tumor Biology Center, Karolinska Institute, Stockholm, Sweden
| | - Cheng‐Hong Wei
- Microbiology and Tumor Biology Center, Karolinska Institute, Stockholm, Sweden
| | - Eugene Major
- Laboratory of Molecular Medicine and Neuroscience, Institute of Neurological Disorders and Stroke, Bethesda, Md
| | | | - Maria G. Masucci
- Microbiology and Tumor Biology Center, Karolinska Institute, Stockholm, Sweden
| | - Victor Levitsky
- Microbiology and Tumor Biology Center, Karolinska Institute, Stockholm, Sweden
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Abstract
Astrogliosis is a common neuropathological finding in the brains of HIV infected individuals; both activation and apoptosis of astrocytes are seen. This review aims to discuss the Fas pathway in the context of proliferation and apoptosis of astrocytes during HIV infection, and as a result of astrogliosis, the dysregulation of astrocyte-neuron networks. The presence of molecules reflecting astrocyte activation, which are derived from the solubilization of receptor/ligand from the surface of proliferating astrocytes, in the cerebrospinal fluid may be used to evaluate the degree of brain cell activation during HAART therapy. A better understanding of the molecular pathway(s) leading to increase activation and apoptosis of astrocytes, in parallel with studies conducted to unravel the molecules involved in T-cell apoptosis during HIV infection, may lead to the development of new therapeutic strategies for controlling HIV replication and tissue damage.
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Affiliation(s)
- Farideh Sabri
- Microbiology and Tumor Biology Center, Karolinska Institute, Nobels väg 16, S‐17177 Stockholm, Sweden
| | - Kehmia Titanji
- Microbiology and Tumor Biology Center, Karolinska Institute, Nobels väg 16, S‐17177 Stockholm, Sweden
| | - Angelo De Milito
- Microbiology and Tumor Biology Center, Karolinska Institute, Nobels väg 16, S‐17177 Stockholm, Sweden
| | - Francesca Chiodi
- Microbiology and Tumor Biology Center, Karolinska Institute, Nobels väg 16, S‐17177 Stockholm, Sweden
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Sabri F, Granath F, Hjalmarsson A, Aurelius E, Sköldenberg B. Modulation of sFas indicates apoptosis in human herpes simplex encephalitis. J Neuroimmunol 2005; 171:171-6. [PMID: 16325272 DOI: 10.1016/j.jneuroim.2005.10.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2005] [Accepted: 10/06/2005] [Indexed: 11/20/2022]
Abstract
Herpes simplex encephalitis (HSE) is the most common cause of non-epidemic, acute and fatal viral encephalitis. A pronounced mortality and morbidity remains in HSE despite antiviral treatment. There is evidence of a vigorous intrathecal immune activity in acute phases of HSE and of persistently increased activity at follow-ups after years. The role of apoptosis of neuronal cells in HSE patients as a mechanism of damage has been brought up lately. We hypothesize that the severity and the progression of the cerebral injury resulting from HSE can be evaluated by quantitative measurement of a compartment of immune activation molecules i.e. soluble Fas (sFas) involved in apoptosis through the Fas/Fas Ligand pathway. Consecutive cerebrospinal fluid (CSF) samples from a prospectively followed cohort, included in an antiviral treatment trial in HSE, were enrolled for quantitative measurement of sFas using commercial capture ELISA. In total, CSF samples from 49 patients with HSE, 63 patients with non-HSE encephalitis and 18 healthy individuals were studied. High levels of sFas were expressed in CSF samples collected between days 0-45 after neurological onset in 41/49 (84%) HSE patients, whereas only 21/63 (33%) of non-HSE patients and none of 18 healthy controls demonstrated measurable levels of sFas. Following the consecutive CSF sFas levels over the time and considering the clinical state of patients at admission, their neurological or lethal outcome at 12 months, and antiviral treatment, we observed that HSE patients with severe neurological sequels revealed an increase in changes of CSF sFas as compared to patients with mild or moderate neurological outcome (57.6+/-55.6 pg/ml, n=10 versus 26.3+/-97.5 pg/ml, n=14; P=0.008). Also HSE patients undergoing vidarabine treatment expressed significantly higher levels of changes of CSF sFas when compared to acyclovir-treated patients (63.7+/-52.8 pg/ml, n=9 versus 26.1+/-98.4 pg/ml, n=14; P=0.003). Interestingly, regardless of the clinical state at admission, and subsequent disease progression of the HSE patients, we could not observe any significant differences in the CSF sFas levels during the first 7 days of neurological symptoms. These observations underline the role of immunological response throughout the course of HSV infection in the brain and the role of the Fas/FasL pathway in particular in disease progression of HSE. The findings further enforce the need of expanding the knowledge of the pathogenesis of HSE to direct to more effective, in particular not only antiviral but also anti-apoptotic or anti-inflammatory treatment.
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Affiliation(s)
- Farideh Sabri
- Division of Infectious Diseases, Department of Medicine, Karolinska Institute, Karolinska University Hospital, Stockholm, Sweden.
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Sköldenberg B, Aurelius E, Hjalmarsson A, Sabri F, Forsgren M, Andersson B, Linde A, Strannegård O, Studahl M, Hagberg L, Rosengren L. Incidence and pathogenesis of clinical relapse after herpes simplex encephalitis in adults. J Neurol 2005; 253:163-70. [PMID: 16222428 DOI: 10.1007/s00415-005-0941-6] [Citation(s) in RCA: 105] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2005] [Revised: 05/11/2005] [Accepted: 05/17/2005] [Indexed: 12/01/2022]
Abstract
OBJECTIVES To study the occurrence of relapse of herpes simplex encephalitis (HSE) and to find out whether soluble activity markers in cerebrospinal fluid (CSF) indicate direct viral or immune- mediated events. METHODS A consecutive series of 32 adult survivors of HSE were followed to determine the incidence of clinical relapse of HSE. Four patients had neurological deterioration interpreted as relapsing HSE. Four non-relapsing HSE cases were selected as matched controls. Fifty nine batched, paired CSF and serum samples from the eight HSE patients were analysed for soluble activity markers, predominantly cytokines and mediators (interferon-gamma, soluble CD8, tumour necrosis factor-alpha, and interleukin-10), amount of HSV-DNA and markers of glial and neuronal destruction (neurofilament protein, glial fibrillary acidic protein, S-100-beta, and neuron specific enolase). RESULTS Relapse of HSE was diagnosed in 3 of 26 (12 %) acyclovir-treated patients (5 episodes during 6.1 years of followup) and in 1 of 6 vidarabine-recipients. All relapses occurred from 1 to 4 months after acute HSE, except for a second relapse after 3.3 years in one patient. Computer tomography at relapses revealed few abnormalities apart from those found during the primary disease. Intravenous acyclovir and corticosteroids were given for 7-21 days in all the relapse patients. All relapse patients seemed to recover to the pre-relapse condition. HSV-DNA was demonstrated in CSF in all patients during the acute stage but not in any of 13 CSF samples taken during relapse phases. The HSV viral load during the acute stage of HSE was not higher or of longer duration in the relapsing patients than in the non-relapsing HSE controls. The levels of sCD8 were increased in nearly all CSF samples tested with peaks of sCD8 at one month of acute HSE. In all episodes of relapse, sCD8 peaks were detected during the first week at high levels. CSF levels of neuron-specific enolase, S-100 and glial fibrillary acidic protein were markedly lower at relapse than at the acute stage of HSV-1 encephalitis. CONCLUSION The lack of demonstrable HSV DNA in CSF, the lack of acute CSF signs and the lack of signs of neural and glia cells destruction indicate that a direct viral cytotoxicity is not the major pathogenic mechanism in relapse. Instead, the pronounced CSF proinflammatory immunological response and the relative lack of CSF anti-inflammatory cytokine IL-10 response suggest immunologically-mediated pathogenicity.
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Affiliation(s)
- B Sköldenberg
- Karolinska Institutet, Division of Infectious Diseases, Department of Medicine, Karolinska University Hospital, Stockholm, Sweden.
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Eidsmo L, Wolday D, Berhe N, Sabri F, Satti I, El Hassan AM, Sundar S, Chiodi F, Akuffo H. Alteration of Fas and Fas ligand expression during human visceral leishmaniasis. Clin Exp Immunol 2002; 130:307-13. [PMID: 12390320 PMCID: PMC1906528 DOI: 10.1046/j.1365-2249.2002.01976.x] [Citation(s) in RCA: 22] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Several studies in murine systems have suggested a role of apoptosis in the pathogenesis of leishmaniasis. However, the role of apoptosis in visceral leishmaniasis in man has not been explored. In this study, we show that patients with visceral leishmaniasis demonstrate significant dysregulation of Fas and Fas ligand. Levels of soluble Fas (sFas) and soluble Fas ligand (sFasL) were elevated in plasma of patients with active visceral leishmaniasis (VL) and individuals co-infected with VL-HIV-1 compared to healthy controls. The levels of sFas and sFasL were normalized 6 months after successful treatment. In VL patients, the expression of membrane bound Fas, and to a lower extent FasL, were up-regulated on Leishmania donovani-infected spleen cells, the site of parasite multiplication. Expression of Fas and FasL on peripheral blood mononuclear cells was within normal range, probably reflecting that the blood is not a normal site of L. donovani infection. Furthermore, this is suggested by the finding that in vitro infection of macrophages with L. donovani up-regulated Fas expression on the surface of infected cells and enhanced the levels of sFasL in supernatants from infected cultures. How this dysregulation may affect the pathogenesis of human visceral leishmaniasis is discussed.
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Affiliation(s)
- L Eidsmo
- Microbiology and Tumor Biology Center, Karolinska Institute, Stockholm, Sweden
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Krzyzowska M, Sabri F, De Milito A, Missailidis C, Schollenberger A, Niemialtowski MG, Chiodi F. Cross-linking of LFA-1 molecule enhances Fas mediated apoptosis of Jurkat and Burkitt lymphoma cell lines. Cell Death Differ 2001; 8:1123-4. [PMID: 11687890 DOI: 10.1038/sj.cdd.4400927] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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48
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Sabri F, De Milito A, Pirskanen R, Elovaara I, Hagberg L, Cinque P, Price R, Chiodi F. Elevated levels of soluble Fas and Fas ligand in cerebrospinal fluid of patients with AIDS dementia complex. J Neuroimmunol 2001; 114:197-206. [PMID: 11240032 DOI: 10.1016/s0165-5728(00)00424-0] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
We measured the levels of sFas and sFasL in CSF and serum of HIV-1 infected patients and related them to AIDS dementia complex (ADC). Specimens were obtained from 51 HIV-1 infected individuals (29 with ADC) and 39 HIV negative individuals. The sFas was detectable in all sera and 98% of CSF specimens. Measurable levels of sFasL were found in 79% of the CSF and 98% of sera samples. According to the presence or absence of ADC, we observed significant differences in CSF sFas (median and IQR 116, 132 vs. 30, 23 pg/ml, P<0.001) and sFasL (median and IQR 127, 290 vs. 15, 73 pg/ml, P<0.001) levels. The sFas in serum differed significantly between HIV-1 infected subjects and non-infected controls (P<0.001), with no correlation to ADC. On the contrary, sFasL in serum differed among HIV-1 infected subjects according to clinical signs of ADC. In the cross-sectional study, the number of cells present in CSF and CD4+ T cell counts in blood did not correlate to the levels of CSF sFas and sFasL. Interestingly, the number of HIV RNA copies in CSF correlated significantly to the levels of CSF sFasL (P=0.001) but not to sFas in the same compartment. Antiretroviral therapy reduced viral load and sFas levels in CSF in the majority of patients. sFas is a useful marker for ADC diagnosis and follow-up during antiviral treatment.
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Affiliation(s)
- F Sabri
- Microbiology and Tumor Biology Center, Karolinska Institute, Nobels väg, 16, S 17177, Stockholm, Sweden
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Rao TN, Gadir EA, Elvarsi JK, Sabri F. Liver laceration due to blunt abdominal trauma and its management in a peripheral hospital. Saudi Med J 2000; 21:984. [PMID: 11369971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/16/2023] Open
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50
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Sabri F, Tresoldi E, Di Stefano M, Polo S, Monaco MC, Verani A, Fiore JR, Lusso P, Major E, Chiodi F, Scarlatti G. Nonproductive human immunodeficiency virus type 1 infection of human fetal astrocytes: independence from CD4 and major chemokine receptors. Virology 1999; 264:370-84. [PMID: 10562499 DOI: 10.1006/viro.1999.9998] [Citation(s) in RCA: 90] [Impact Index Per Article: 3.6] [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: 11/22/2022]
Abstract
Human immunodeficiency virus type 1 (HIV-1) infection of the brain is associated with neurological manifestations both in adults and in children. The primary target for HIV-1 infection in the brain is the microglia, but astrocytes can also be infected. We tested 26 primary HIV-1 isolates for their capacity to infect human fetal astrocytes in culture. Eight of these isolates, independent of their biological phenotype and chemokine receptor usage, were able to infect astrocytes. Although no sustained viral replication could be demonstrated, the virus was recovered by coculture with receptive cells such as macrophages or on stimulation with interleukin-1beta. To gain knowledge into the molecular events that regulate attachment and penetration of HIV-1 in astrocytes, we investigated the expression of several chemokine receptors. Fluorocytometry and calcium-mobilization assay did not provide evidence of expression of any of the major HIV-1 coreceptors, including CXCR4, CCR5, CCR3, and CCR2b, as well as the CD4 molecule on the cell surface of human fetal astrocytes. However, mRNA transcripts for CXCR4, CCR5, Bonzo/STRL33/TYMSTR, and APJ were detected by RT-PCR. Furthermore, infection of astrocytes by HIV-1 isolates with different chemokine receptor usage was not inhibited by the chemokines SDF-1beta, RANTES, MIP-1beta, or MCP-1 or by antibodies directed against the third variable region or the CD4 binding site of gp120. These data show that astrocytes can be infected by primary HIV-1 isolates via a mechanism independent of CD4 or major chemokine receptors. Furthermore, astrocytes are potential carriers of latent HIV-1 and on activation may be implicated in spreading the infection to other neighbouring cells, such as microglia or macrophages.
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MESH Headings
- Adult
- Amino Acid Sequence
- Antibodies, Monoclonal/metabolism
- Astrocytes/cytology
- Astrocytes/metabolism
- Astrocytes/virology
- Binding Sites
- Brain/cytology
- Brain/embryology
- CD4 Antigens/metabolism
- Cells, Cultured
- Chemokine CCL2/metabolism
- Chemokine CCL4
- Chemokine CCL5/metabolism
- Chemokine CXCL12
- Chemokines, CXC/metabolism
- Child
- Gene Expression
- HIV Envelope Protein gp120/genetics
- HIV Envelope Protein gp120/immunology
- HIV Infections/virology
- HIV-1/growth & development
- HIV-1/isolation & purification
- HIV-1/metabolism
- HIV-1/physiology
- Humans
- Infant
- Macrophage Inflammatory Proteins/metabolism
- Molecular Sequence Data
- Peptide Fragments/genetics
- Peptide Fragments/immunology
- Receptors, CCR1
- Receptors, CCR2
- Receptors, CCR3
- Receptors, CCR5/genetics
- Receptors, CCR5/metabolism
- Receptors, CXCR4/genetics
- Receptors, CXCR4/metabolism
- Receptors, Chemokine/genetics
- Receptors, Chemokine/metabolism
- Receptors, Cytokine/genetics
- Receptors, Cytokine/metabolism
- Receptors, HIV/genetics
- Receptors, HIV/metabolism
- Virus Activation
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Affiliation(s)
- F Sabri
- Microbiology and Tumorbiology Center, Karolinska Institute, Doktorsringen 13, Stockholm, 17177, Sweden
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