44 results on '"Kheliouen A"'
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2. Interleukin-6, procalcitonin and neutrophil-to-lymphocyte ratio: Potential immune-inflammatory parameters to identify severe and fatal forms of COVID-19
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Sayah, Wafa, Berkane, Ismahane, Guermache, Imène, Sabri, Mohamed, Lakhal, Fatma Zahra, Yasmine Rahali, Sarah, Djidjeli, Asma, Lamara mahammed, Lydia, Merah, Fatma, Belaid, Brahim, Berkani, Lilya, Lazli, Nouzha Zhor, Kheddouci, Lylia, Kadi, Ahmed, Ouali, Mourad, Khellafi, Rachida, Mekideche, Dalila, Kheliouen, Assia, Hamidi, Réda Malek, Ayoub, Soraya, Raaf, Nabil Beramtane, Derrar, Fawzi, Gharnaout, Merzak, Allam, Ines, and Djidjik, Réda
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- 2021
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3. Improvement of the consideration of seismic risks in Algerian planning and urban development instruments: application to the Boumerdés region (50km east of Algiers/Algeria)
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Kheliouen Mohamed Yacine and Bouder Abdelmadjd
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boumerdés ,dellys ,bordjménail ,instrument of development and urbanism ,vulnerability of the building ,evacuation and rescue capacity ,cumulative seismic risk ,Environmental sciences ,GE1-350 - Abstract
The territory of both Algiers and Boumerdés departments was hit in 2003 by a violent earthquake of 6.8 (M) causing considerable human and material losses. In order to establish preventive solutions, the article recommend the seismic risk studies to be considered in national and urban planning instruments, It presents a seismic vulnerability study applied to three (03) cities located in the region that have high populations and challenges Two assessments are presented for each city: the first consists of studying the vulnerability of buildings to the earthquake using a qualitative empirical method called Risk-EU. The second assessment focuses on the unbuilt part of the city through the analysis of evacuation and rescue capacity after the earthquake. This latter is a method used in the seismic micro zoning study of the wilaya of Algiers that was jointly established by 02 Japanese and Algerian study centers. The superposition of the summary vulnerability maps of the two assessments designed using a geographic information system (GIS), shows us the location of the most vulnerable urban areas. Damage of the building is coupled with their degree of isolation that serves for evacuation and rescue in the case of an earthquake. The results of cumulative vulnerability (built and urban system) at the scale of the region studied, then at each city and districts, are shown graphically and statistically.
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- 2020
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4. T cell counts and IL-6 concentration in blood of North African COVID-19 patients are two independent prognostic factors for severe disease and death
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Réda Malek Hamidi, Rachida Khellafi, Ahmed Kadi, Reda Djidjik, Fawzi Derrar, Belgacem Mihi, Sarah Yasmine Rahali, Lilya Berkani, Asma Djidjeli, Ismahane Berkane, Dalila Mekideche, Zineb Larab, Lylia Kheddouci, Lydia Lamara Mahammad, A. Kheliouen, Brahim Belaid, Soraya Ayoub, Wafa Sayah, Fatma Merah, Mourad Ouali, Ines Allam, Merzak Gharnaout, and Nouzha Zhor Lazli
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lymphocytes ,Male ,0301 basic medicine ,medicine.medical_specialty ,SARS‐CoV2 ,medicine.medical_treatment ,T cell ,Immunology ,Kaplan-Meier Estimate ,Disease ,CD8-Positive T-Lymphocytes ,Severity of Illness Index ,Gastroenterology ,Article ,03 medical and health sciences ,0302 clinical medicine ,Immune system ,Africa, Northern ,COVID‐19 ,Internal medicine ,Severity of illness ,medicine ,Humans ,Immunology and Allergy ,Lymphocyte Count ,Interleukin 6 ,Aged ,biology ,Interleukin-6 ,flow cytometry ,COVID-19 ,Cell Biology ,Middle Aged ,Prognosis ,cytokines ,Lymphocyte Subsets ,Confidence interval ,Treatment Outcome ,030104 developmental biology ,Cytokine ,medicine.anatomical_structure ,Covid‐19 and Related Topics ,030220 oncology & carcinogenesis ,Multivariate Analysis ,biology.protein ,Female ,Biomarkers ,CD8 - Abstract
The immune system plays a crucial role in the response against severe acute respiratory syndrome coronavirus 2 with significant differences among patients. The study investigated the relationships between lymphocyte subsets, cytokines, and disease outcomes in patients with coronavirus disease 2019 (COVID‐19). The measurements of peripheral blood lymphocytes subsets and cytokine levels were performed by flow cytometry for 57 COVID‐19 patients. Patients were categorized into two groups according to the severity of the disease (nonsevere vs. severe). Total lymphocytes, T cells, CD4+ T cells, CD8+ T cells, B cells, and natural killer cells were decreased in COVID‐19 patients and statistical differences were found among different severity of illness and survival states (P ˂ 0.01). The levels of IL‐6 and IL‐10 were significantly higher in severe and death groups and negatively correlated with lymphocyte subsets counts. The percentages of Th17 in the peripheral blood of patients were higher than those of healthy controls whereas the percentages of Th2 were lower. For the severe cases, the area under receiver operating characteristic (ROC) curve of IL‐6 was the largest among all the immune parameters (0.964; 95% confidence interval: 0.927–1.000, P 106.44 pg/ml and CD8+ T cell counts, Graphical Abstract COVID‐19 patients with poor prognosis exhibited a significant depletion of lymphocyte‐subset counts, with remarkably increasing concentrations of IL6 and IL10.
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- 2021
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5. Dépistage de la rétinopathie diabétique par télédiagnostic dans le Haut-Rhin
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Lenoble, P., Kheliouen, M., Bourderont, D., Klinger, V., Nasica, X., Benseddik, Y., and Holl, P.
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- 2009
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6. Retreatment by series of three intravitreal injections of ranibizumab in neovascular age-related macular degeneration: long-term outcomes
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Saleh, Maher, Kheliouen, Mehdi, Tebeanu, Eliza, Ballonzoli, Laurent, Bourcier, Tristan, Speeg-Schatz, Claude, and Gaucher, David
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- 2013
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7. Improvement of the consideration of seismic risks in Algerian planning and urban development instruments: application to the Boumerdés region (50km east of Algiers/Algeria)
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Abdelmadjd Bouder and Mohamed Yacine Kheliouen
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Geographic information system ,0211 other engineering and technologies ,Vulnerability ,02 engineering and technology ,010501 environmental sciences ,01 natural sciences ,Urban planning ,boumerdés ,dellys ,021108 energy ,Seismic risk ,Environmental planning ,lcsh:Environmental sciences ,0105 earth and related environmental sciences ,lcsh:GE1-350 ,evacuation and rescue capacity ,business.industry ,instrument of development and urbanism ,bordjménail ,Geography ,cumulative seismic risk ,Urban system ,Scale (map) ,Zoning ,business ,vulnerability of the building - Abstract
The territory of both Algiers and Boumerdés departments was hit in 2003 by a violent earthquake of 6.8 (M) causing considerable human and material losses. In order to establish preventive solutions, the article recommend the seismic risk studies to be considered in national and urban planning instruments, It presents a seismic vulnerability study applied to three (03) cities located in the region that have high populations and challenges Two assessments are presented for each city: the first consists of studying the vulnerability of buildings to the earthquake using a qualitative empirical method called Risk-EU. The second assessment focuses on the unbuilt part of the city through the analysis of evacuation and rescue capacity after the earthquake. This latter is a method used in the seismic micro zoning study of the wilaya of Algiers that was jointly established by 02 Japanese and Algerian study centers. The superposition of the summary vulnerability maps of the two assessments designed using a geographic information system (GIS), shows us the location of the most vulnerable urban areas. Damage of the building is coupled with their degree of isolation that serves for evacuation and rescue in the case of an earthquake. The results of cumulative vulnerability (built and urban system) at the scale of the region studied, then at each city and districts, are shown graphically and statistically.
- Published
- 2020
8. T cell counts and IL-6 concentration in blood of North African COVID-19 patients are two independent prognostic factors for severe disease and death
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Belaid, Brahim, primary, Lamara Mahammad, Lydia, additional, Mihi, Belgacem, additional, Rahali, Sarah Yasmine, additional, Djidjeli, Asma, additional, Larab, Zineb, additional, Berkani, Lilya, additional, Berkane, Ismahane, additional, Sayah, Wafa, additional, Merah, Fatma, additional, Lazli, Nouzha Zhor, additional, Kheddouci, Lylia, additional, Kadi, Ahmed, additional, Ouali, Mourad, additional, Khellafi, Rachida, additional, Mekideche, Dalila, additional, Kheliouen, Assia, additional, Ayoub, Soraya, additional, Hamidi, Réda Malek, additional, Derrar, Fawzi, additional, Gharnaout, Merzak, additional, Allam, Ines, additional, and Djidjik, Réda, additional
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- 2021
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9. Variant surface antigens in cerebral malaria: distinct from others and similar to each other?
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Lalya Francis, Eboumbou Moukoko Else C, Viwami Firmine, Tuikue-Ndam Nicaise, Kheliouen Nabila, Aubouy Agnès, Rogier Christophe, and Deloron Philippe
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Arctic medicine. Tropical medicine ,RC955-962 ,Infectious and parasitic diseases ,RC109-216 - Published
- 2010
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10. PERCUTANEOUS SCREW FIXATION OF TYPE IIA AND IIB NONUNION OF THE SCAPHOID: 26 CASES: 174.
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Taleb, Chihab, Kheliouen, Mehdi, and Liverneaux, Philippe
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- 2011
11. T cell counts and IL‐6 concentration in blood of North African COVID‐19 patients are two independent prognostic factors for severe disease and death.
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Belaid, Brahim, Lamara Mahammad, Lydia, Mihi, Belgacem, Rahali, Sarah Yasmine, Djidjeli, Asma, Larab, Zineb, Berkani, Lilya, Berkane, Ismahane, Sayah, Wafa, Merah, Fatma, Lazli, Nouzha Zhor, Kheddouci, Lylia, Kadi, Ahmed, Ouali, Mourad, Khellafi, Rachida, Mekideche, Dalila, Kheliouen, Assia, Ayoub, Soraya, Hamidi, Réda Malek, and Derrar, Fawzi
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T cells ,KILLER cells ,COVID-19 ,PROGNOSIS ,LYMPHOCYTE subsets - Abstract
The immune system plays a crucial role in the response against severe acute respiratory syndrome coronavirus 2 with significant differences among patients. The study investigated the relationships between lymphocyte subsets, cytokines, and disease outcomes in patients with coronavirus disease 2019 (COVID‐19). The measurements of peripheral blood lymphocytes subsets and cytokine levels were performed by flow cytometry for 57 COVID‐19 patients. Patients were categorized into two groups according to the severity of the disease (nonsevere vs. severe). Total lymphocytes, T cells, CD4+ T cells, CD8+ T cells, B cells, and natural killer cells were decreased in COVID‐19 patients and statistical differences were found among different severity of illness and survival states (P ˂ 0.01). The levels of IL‐6 and IL‐10 were significantly higher in severe and death groups and negatively correlated with lymphocyte subsets counts. The percentages of Th17 in the peripheral blood of patients were higher than those of healthy controls whereas the percentages of Th2 were lower. For the severe cases, the area under receiver operating characteristic (ROC) curve of IL‐6 was the largest among all the immune parameters (0.964; 95% confidence interval: 0.927–1.000, P < 0.0001). In addition, the preoperative IL‐6 concentration of 77.38 pg/ml was the optimal cutoff value (sensitivity: 84.6%, specificity: 100%). Using multivariate logistic regression analysis and ROC curves, IL‐6 > 106.44 pg/ml and CD8+ T cell counts <150 cells/μl were found to be associated with mortality. Measuring the immune parameters and defining a risk threshold can segregate patients who develop a severe disease from those with a mild pathology. The identification of these parameters may help clinicians to predict the outcome of the patients with high risk of unfavorable progress of the disease. [ABSTRACT FROM AUTHOR]
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- 2022
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12. Interleukin-6, procalcitonin and neutrophil-to-lymphocyte ratio: Potential immune-inflammatory parameters to identify severe and fatal forms of COVID-19
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Fawzi Derrar, Lydia Lamara Mahammed, Sarah Yasmine Rahali, Nouzha Zhor Lazli, Fatma Merah, Ahmed Kadi, Lylia Kheddouci, Mohamed Sabri, Imène Guermache, Wafa Sayah, Asma Djidjeli, Rachida Khellafi, Dalila Mekideche, Brahim Belaid, Fatma Zahra Lakhal, Soraya Ayoub, Mourad Ouali, Réda Malek Hamidi, Merzak Gharnaout, Ines Allam, Lilya Berkani, Ismahane Berkane, Nabil Raaf, Reda Djidjik, and A. Kheliouen
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Male ,0301 basic medicine ,ARDS ,Neutrophils ,Cytokine storm ,Severity of Illness Index ,Biochemistry ,Gastroenterology ,Procalcitonin ,0302 clinical medicine ,Adrenal Cortex Hormones ,Immunology and Allergy ,Prospective Studies ,Aged, 80 and over ,medicine.diagnostic_test ,Complete blood count ,Hematology ,Middle Aged ,Prognosis ,C-Reactive Protein ,medicine.anatomical_structure ,030220 oncology & carcinogenesis ,Predictive value of tests ,Absolute neutrophil count ,Female ,Inflammation Mediators ,Adult ,medicine.medical_specialty ,Adolescent ,Immunology ,Article ,NLR ,Young Adult ,03 medical and health sciences ,Predictive Value of Tests ,Internal medicine ,White blood cell ,medicine ,Humans ,Lymphocyte Count ,Neutrophil to lymphocyte ratio ,Pandemics ,Molecular Biology ,Aged ,Interleukin-6 ,SARS-CoV-2 ,business.industry ,Interleukin-2 Receptor alpha Subunit ,COVID-19 ,medicine.disease ,IL6 ,COVID-19 Drug Treatment ,030104 developmental biology ,Algeria ,Ferritins ,business ,Biomarkers ,Inflammatory biomarker - Abstract
Accumulating evidence supports that the viral-induced hyper-inflammatory immune response plays a central role in COVID-19 pathogenesis. It might be involved in the progression to acute respiratory distress syndrome (ARDS), multi-organ failure leading to death. In this study, we aimed to evaluate the prognostic value of the immune-inflammatory biomarkers in COVID-19, then determine optimal thresholds for assessing severe and fatal forms of this disease.153 patients with confirmed COVID-19 were included in this study, and classified into non-severe and severe groups. Plasmatic levels of interleukin 6 (IL6), C-reactive protein (CRP), soluble-IL2 receptor (IL2Rα), procalcitonin (PCT) and ferritin were measured using chemiluminescence assay. Complete blood count was performed by Convergys 3X® hematology analyzer. Our results demonstrated that the peripheral blood levels of IL6, PCT, CRP, ferritin, IL2Rα, white blood cell count (WBC), neutrophil count (NEU), neutrophil-to-lymphocyte ratio (NLR), derived neutrophil-to-lymphocyte ratio (d-NLR) were significantly higher in severe forms of COVID-19. The ROC curve analysis showed that IL6 was the most accurate inflammatory biomarker. The calculated cutoff of IL6 (42 pg/ml) could correctly classify > 90% of patients regarding their risk of severity (area under ROC curve (AUROC) = 0.972) and the threshold value of 83 pg/ml was highly predictive of the progression to death (AUROC = 0.94, OR = 184) after a median of 3 days. Besides, IL-6 was positively correlated with other inflammatory markers and the kinetic analysis highlighted its value for monitoring COVID-19 patients. PCT and NLR had also a high prognostic relevance to assess severe forms of COVID-19 with corresponding AUROC of 0.856, 0.831 respectively. Furthermore the cut-off values of PCT (0.16 ng/ml) and NLR (7.4) allowed to predict mortality with high accuracy (se = 96.3%, sp = 70.5%,OR = 61.2)’ (se = 75%, sp = 84%, OR = 14.6).The levels of these parameters were not influenced by corticosteroid treatment, which make them potential prognostic markers when patients are already undergoing steroid therapy.
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- 2021
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13. Improvement of the consideration of seismic risks in Algerian planning and urban development instruments: application to the Boumerdés region (50km east of Algiers/Algeria).
- Author
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Akhssas, A., Baba, K., Bahi, L., Benradi, F., Cherkaoui, E., Khamar, M., Lahmili, A., Menzhi, M., Nounah, A., Ouadif, L., Kheliouen, Mohamed Yacine, and Bouder, Abdelmadjd
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- 2020
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14. Analyse des risques sur un portefeuille de dettes
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Kheliouen, Mohamed Reda, Laboratoire de Sciences Actuarielle et Financière (SAF), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon, Université de Lyon, Areski Cousin, Béatrice Rey-Fournier, and STAR, ABES
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Filtre de Kalman ,Ambiguity ,Modèle de cash-flow ,Forward looking ,Inflated beta distribution ,Markov chain ,Cash flow model ,Distribution béta inflatée en un ,Factor migration model ,Ambiguité ,Chaine de Markov ,Point in time ,Model de migration à facteurs ,[SHS.GESTION]Humanities and Social Sciences/Business administration ,Kalman filter ,[SHS.GESTION] Humanities and Social Sciences/Business administration - Abstract
This thesis starts from the observation that a credit portfolio is subject to several risks, mainly due to the credit quality of the borrower and his behavior toward his credit lines (drawdown or prepayment). It turns out that the observed risks are dynamic and depend on various factors, both micro and macroeconomic. Our goal in one hand is to understand the articulation of these risks in order to efficiently manage them in the current time, in the other hand, we want to have a forward looking vision of these risks with respect to the changes in the economic conditions in order to have a pro-active management. To address our objectives, we have articulated our research on three axes that have resulted in three chapters in the form of articles.(i) Analysis of changes in the credit ratings with respect to risk factors. The use of factor migration models allowed us to reproduce some stylized facts mentioned in academic literature and to identify some others. We have also estimated the business cycle between2006 and 2014, which manages to capture the crises of 2008 and 2012.(ii) Design of a cash-_ow model that considers the changes in borrowers' behavior under the influence of their micro and macroeconomic environments. We prove the influence of the credit ratings, business cycle, estimated recovery rates and short-term interest rates on the utilization rates of a credit line. This model also provides risk measures such as Cash Flow-at-Risk and Stressed Cash Flow-at-Risk on credit portfolio using Monte Carlo simulations.(iii) Discussion on the Willingness-to-Pay (WTP) of an ambiguity neutral decision maker (DM) in order to reduce the risk in presence of ambiguity over probabilities. We show that the introduction of ambiguity through several ambiguity sources modifies the welfare level of all ambiguity-neutral and risk-averse DM when ambiguity and risk interact, Cette thèse de doctorat part du constat qu'un portefeuille de crédit est soumis à plusieurs risques qui proviennent principalement de la qualité de crédit de l'emprunteur et de son comportement de tirage et de pré-paiement sur ses lignes de crédit. Il s'avère que les risques observés sont dynamiques et dépendent de facteurs divers, autant micro que macro-économiques.Nous avons eu la volonté de comprendre l'articulation de ces risques pour avoir une gestion efficace de ceux-ci dans le présent, mais aussi une vision prospective si les conditions économiques changent, cela pour une gestion pro-active. Pour traiter cette problématique, nous avons articulé nos recherches autour de trois axes qui ont abouti à trois chapitres sous forme d'articles.(i) Analyse des changements des notations de crédit en fonction des facteurs de risque.L'utilisation des modèles de migration multi-factoriels nous a permis de reproduire des faits stylisés cités dans la littérature et d'en identifier d'autres. Nous reconstituons aussi le cycle économique entre 2006 et 2014 qui réussit à capter les crises de 2008 et 2012.(ii) Conception d'un modèle de cash-flow qui tient compte de l'évolution des comportements des emprunteurs sous l'influence de leurs environnements micro et macro-économiques.Nous prouvons l'influence de la notation de crédit, du cycle économique, du taux de recouvrement estimé et du taux d'intérêt court terme sur les taux d'utilisation. Ce modèle permet aussi d'obtenir des mesures de risque comme le Cash Flow-at-Risk et le Stressed Cash Flow-at-Risk sur des portefeuilles de crédit grâce à des simulations de Monte Carlo.(iii) Réflexion sur la Disposition-à-Payer (DAP) d'un décideur neutre à l'ambiguïté pour réduire le risque en présence d'incertitude sur les probabilités. Nous montrons que la présence de plusieurs sources d'ambiguïté (possiblement corrélées) change le bien-être d'un décideur averse au risque bien que celui-ci soit neutre à l'ambigüité
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- 2018
15. Modalités diagnostiques de la sarcoïdose médiastino-pulmonaire dans un service de pneumologie d’Alger
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Kheliouen, A., primary, Kadi, A., additional, Bellal, A.R., additional, Baough, L., additional, Mansouri, B., additional, and Zidouni, N., additional
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- 2019
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16. Étiologies des exacerbations aiguës de BPCO au service Matiben
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Kheliouen, A., primary, Bellal, A.R., additional, Kadi, A., additional, Baough, L., additional, and Zidouni, N., additional
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- 2019
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17. Plasmodium falciparum parasites causing cerebral malaria share variant surface antigens, but are they specific?
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Rogier Christophe, Moukoko Else, Tuikue-Ndam Nicaise, Lalya Francis, Viwami Firmine, Kheliouen Nabila, Deloron Philippe, and Aubouy Agnès
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Arctic medicine. Tropical medicine ,RC955-962 ,Infectious and parasitic diseases ,RC109-216 - Abstract
Abstract Background Variant surface antigens (VSA) expressed on the surface of Plasmodium falciparum-infected red blood cells constitute a key for parasite sequestration and immune evasion. In distinct malaria pathologies, such as placental malaria, specific antibody response against VSA provides protection. This study investigated the antibody response specifically directed against VSA expressed by parasites isolated from individuals presenting a given type of clinical presentation. Methods Plasma and isolates were obtained from four groups of Beninese subjects: healthy adults, patients presenting uncomplicated malaria (UM), cerebral malaria (CM), or pregnancy-associated malaria (PAM). The reactivity of plasma samples from each clinical group was measured by flow cytometry against parasites isolated from individuals from each clinical group. Results Antibody responses against VSAUM were predominant in CM, UM and HA plasmas. When analysed according to age in all plasma groups, anti-VSACM and -VSAUM antibody levels were similar until six years of age. In older groups (6-18 and >19 years of age), VSAUM antibody levels were higher than VSACM antibody levels (P = .01, P = .0008, respectively). Mean MFI values, measured in all plasmas groups except the PAM plasmas, remained low for anti-VSAPAM antibodies and did not vary with age. One month after infection the level of anti-VSA antibodies able to recognize heterologous VSACM variants was increased in CM patients. In UM patients, antibody levels directed against heterologous VSAUM were similar, both during the infection and one month later. Conclusions In conclusion, this study suggests the existence of serologically distinct VSACM and VSAUM. CM isolates were shown to share common epitopes. Specific antibody response to VSAUM was predominant, suggesting a relative low diversity of VSAUM in the study area.
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- 2010
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18. Impact de la rhinite allergique sur le contrôle de l’asthme : à propos de 212 cas
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A. Kheliouen, A. Mebrek, N. Zidouni, A.R. Bellal, L. Baough, and A. Kadi
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Pulmonary and Respiratory Medicine - Abstract
Introduction Asthme et rhinite allergique sont souvent associes. Cette derniere a un impact sur le controle de la maladie asthmatique et altere la qualite de vie des patients. But de l’etude L’objectif de ce travail etait d’evaluer l’influence de la rhinite allergique sur le controle et la severite de l’asthme. Methodes Une etude retrospective a ete realisee dans une consultation de pneumologie chez des malades suivis pour rhinite allergique et asthme. Les donnees ont ete recueillies dans les dossiers des malades et lors de leur controle. Resultats Au total, 212 patients ont ete colliges ; une predominance feminine de 123 femmes, soit 58 % des cas avec un âge moyen de 42 ans a ete constate. Selon la classification du Gina : l’asthme etait intermittent dans 10 % des cas, persistant leger dans 29 % des cas, persistant modere dans 49 % des cas et persistant severe dans12 % des cas Selon la classification ARIA : la rhinite allergique etait intermittente dans 25 % des cas, persistante legere dans 35 % des cas, persistante moderee a severe dans 39 % des cas. Une conjonctivite allergique a ete associee chez 25 % des patients asthmatiques et un eczema de contact dans 13 % des cas. L’asthme associe a une rhinite intermittente etait controle dans 60 % des cas, partiellement controle dans 31 % des cas lorsque l’association de l’asthme avec une rhinite persistante moderee a ete retrouvee. Il a ete constate que la maladie asthmatique etait non controlee lorsque la rhinite allergique persistante severe etait presente chez ces malades ; ce non-controle a ete retrouve dans notre etude dans 9 % des cas. Conclusion La rhinite allergique est un facteur de mauvais controle de l’asthme quel que soit le niveau de severite de l’asthme. Son traitement adequat et son observance ameliorent la qualite de vie de ces patients.
- Published
- 2018
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19. Étiologies des exacerbations aiguës de BPCO au service Matiben
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A. Kheliouen, N. Zidouni, A. Kadi, L. Baough, and A.R. Bellal
- Subjects
Pulmonary and Respiratory Medicine - Abstract
Introduction Les exacerbations aigues de BPCO (EABPCO) sont un motif frequent d’hospitalisation des BPCO. Elles sont responsables d’une mortalite importante dans les formes severes. Leurs causes sont multiples, le plus souvent d’origine infectieuse. Methodes Etude retrospective portant sur les EABPCO prises en charge durant 2 annees au service Matiben. Le but de ce travail : determiner le profil etiologique de ces EABPCO. Resultats Soixante-quatre cas ont ete colliges : 48 hommes et 16 femmes. Age moyen 52 ans (40–76 ans). Cinquante-trois patients etaient fumeurs et l’exposition a la biomasse a ete retrouvee chez 10 femmes. Selon la classification de GOLD, ces patients etaient au stade I : 3 cas, stade II : 29, stade III : 24, stade IV : 8. Les comorbidites associees : HTA : 25 cas, diabete : 18, cardiopathies ischemiques : 3, infarctus du myocarde : 1, hypertension pulmonaire : 3, anemie : 8, denutrition : 11, troubles anxiodepressifs : 26. Les etiologies de ces EABPCO : infections broncho-pulmonaires (n = 41), pneumothorax (n = 5), mauvaise observance du traitement (n = 6), indeterminee (n = 10). Le stade de severite de ces EABPCO : moderee : 10, moyennement severe : 39, severe : 15 et 8 patients ont presente 3 exacerbations durant l’annee precedente. La prise en charge therapeutique a necessite en plus du traitement etiologique, une VNI dans un cas, une ventilation assistee dans 2 cas et un traitement chirurgical pour 2 pneumothorax. L’evolution immediate de ces EABPCO a ete marquee par le deces de 2 patients. Conclusion Les EABPCO sont frequentes. Leurs etiologies sont dominees par les infections broncho-pulmonaires. La gravite de l’exacerbation depend de la severite de la BPCO sous-jacente et de son etiologie. Les comorbidites associees aggravent le pronostic. Ces EABPCO accelerent le declin de la fonction respiratoire et alterent la qualite de vie des patients.
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- 2019
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20. Modalités diagnostiques de la sarcoïdose médiastino-pulmonaire dans un service de pneumologie d’Alger
- Author
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A. Kheliouen, L. Baough, N. Zidouni, B. Mansouri, A.R. Bellal, and A. Kadi
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Pulmonary and Respiratory Medicine - Abstract
Introduction La sarcoidose est une granulomatose systemique d’etiologie inconnue. L’atteinte mediastino-pulmonaire est frequente souvent associee a d’autres localisations qui facilitent son diagnostic. Methodes Il s’agit d’une etude prospective dans le cadre du bilan etiologique d’une cohorte de pneumopathies infiltrantes diffuses (PID). Objectif de l’etude decrire les modalites diagnostiques de la sarcoidose mediastino-pulmonaire (type I d’emblee exclu) et sa place parmi les autres PID. Resultats Cent dix cas de PID ont ete colliges. La sarcoidose mediastino-pulmonaire (SMP) a occupe le premier rang de ces PID avec 37 patients (33,6 % des cas) suivie des PID associees aux connectivites (28 % des cas). L’âge moyen etait 43 ans, avec une predominance feminine. La dyspnee etait presente dans 78,3 % ; la toux dans 70,2 % ; la douleur thoracique dans 10,8 %. A la TDM thoracique : type I (exclu), type II (83,7 %), type III (5,4 %), type IV (10,8 %). La spirometrie etait normale dans 54 % des cas, elle a objective un trouble ventilatoire restrictif dans 13,5 % des cas, mixte dans 10,8 % des cas et une chute des debits peripheriques dans 21,6 % des cas. La cytologie du LBA a montre une alveolite lymphocytaire dans 56,7 %, pluricellulaire dans 24,4 %, ininterpretable dans18,9 %. La confirmation histologique a ete obtenue dans 59,4 % des cas soit par biopsies bronchiques etagees (21,6 %), biopsie bronchique distale (16,2 %), biopsie cutanee (21,6 %), biopsie ganglionnaire peripherique (13,5 %), biopsie hepatique (5,4 %), biopsie salivaire (2,7 %). Une uveite a ete associee dans 5,4 % et une atteinte cerebelleuse a l’IRM cerebrale dans 2,7 %. La corticotherapie orale a ete prescrite a tous les patients avec adjuvants et associee aux antipaludeens de synthese dans 10,8 % des cas. L‘evolution clinique etait favorable dans la majorite des cas. Conclusion Le diagnostic de la sarcoidose mediastino-pulmonaire repose sur les donnees cliniques et la TDM thoracique. La recherche de localisations extra thoraciques superficielles accessibles a la biopsie, facilite le diagnostic.
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- 2019
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21. A comparative study on the estimation of factor migration models
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Cousin, Areski, Kheliouen, Mohamed Reda, Cousin, Areski, Kheliouen, Réda, Laboratoire de Sciences Actuarielle et Financière (SAF), Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon
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ordered Probit model ,[SHS.STAT]Humanities and Social Sciences/Methods and statistics ,Kalman filter ,[SHS.STAT] Humanities and Social Sciences/Methods and statistics ,multi-state latent intensity model ,mobility index ,Factor migration models ,[SHS.ECO]Humanities and Social Sciences/Economics and Finance ,[SHS.ECO] Humanities and Social Sciences/Economics and Finance - Abstract
In this paper, we study the statistical estimation of some factor migration models. This class of models is based on the assumption that rating migrations are driven by a set of common factors representing the business cycle evolution. In particular, we compare the estimation of the ordered Probit model as described for instance in Gagliardini and Gourieroux (2005) and of the multi-state latent factor intensity model used in Koopman et al. (2008). For these two approaches, we also distinguish the case where the underlying factors are observable and the case where they are assumed to be unobservable. The paper is supplied with an empirical study where the estimation is made on historical Standard & Poor's rating data on the period [01/2006 − 01/2014]. We find that the intensity model with observable factors is the one that best fits empirical transition probabilities. In line with Kavvathas (2001), this study shows that short migrations of investment grade firms are significantly correlated to the business cycle whereas, because of lack of observations, it is not possible to state any relation between long migrations (more than two grades) and the business cycle. Concerning non investment grade firms, downgrade migrations are negatively related to business cycle whatever the amplitude of the migration., Dans cet article, nous étudions l'estimation statistique de modèles factoriels de migration de crédit. Cette classe de modèles repose sur l'hypothèse que les changements de notation sont gouvernés par un ensemble de facteurs communs représentant l'évolution du cycle économique. Nous comparons en particulier l'estimation du modèle Probit ordonné tel que décrit dans Gagliardini and Gourieroux (2005) avec l'estimation du modèle à intensité multifactorielle qui est présenté dans Koopman et al. (2008). Pour ces deux approches, nous distinguons le cas où les facteurs sous-jacents sont observables et le cas où ils sont considérés comme inobservables. La réalisation d'une étude empirique sur des données de notations Standard & Poor's sur la période [01/2006 − 01/2014] nous permet de con-clure que le modèle à intensité à facteurs observables est celui qui ajuste le mieux les probabilités de transition empiriques. Par ailleurs, l'étude confirme des résulats obtenus dans de précédents articles comme celui de Kavvathas (2001), à savoir que pour les firmes qui sont bien notées, les migrations de notation de faible amplitude (un degré) sont liées au cycle économique alors qu'en raison du manque d'observations, il est impossible de lier les migrations de fortes amplitudes (plus de deux degrés) au cycle économique. Lorsque les firmes sont mal notées, les dégradations de notation sont négativement corrélées au cycle économique.
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- 2015
22. Profil évolutif de la FPI dans un service de pneumologie d’Alger
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Kheliouen, A., primary, Kadi, A., additional, Baough, L., additional, and Zidouni, N., additional
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- 2018
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23. Profil étiologique des tumeurs médiastinales de l’adulte
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Kadi, A., primary, Kheliouen, A., additional, Bellal, A.R., additional, Mebrek, A., additional, Lalami, F.Z., additional, Baough, L., additional, and Zidouni, N., additional
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- 2018
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24. Impact de la rhinite allergique sur le contrôle de l’asthme : à propos de 212 cas
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Kheliouen, A., primary, Bellal, A.R., additional, Kadi, A., additional, Mebrek, A., additional, Baough, L., additional, and Zidouni, N., additional
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- 2018
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25. Retreatment by series of three intravitreal injections of ranibizumab in neovascular age-related macular degeneration: long-term outcomes
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Maher Saleh, Tristan Bourcier, David Gaucher, L. Ballonzoli, Claude Speeg-Schatz, Mehdi Kheliouen, and Eliza Tebeanu
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Male ,medicine.medical_specialty ,genetic structures ,Visual Acuity ,Angiogenesis Inhibitors ,Antibodies, Monoclonal, Humanized ,Cellular and Molecular Neuroscience ,Initial visit ,Ranibizumab ,Ophthalmology ,Age related ,Long term outcomes ,Humans ,Medicine ,Aged ,Retrospective Studies ,Aged, 80 and over ,Series (stratigraphy) ,business.industry ,Mean age ,Macular degeneration ,medicine.disease ,Sensory Systems ,Regimen ,Treatment Outcome ,Intravitreal Injections ,Retreatment ,Wet Macular Degeneration ,Optometry ,Female ,business ,Tomography, Optical Coherence ,Follow-Up Studies ,medicine.drug - Abstract
The purpose of this study was to analyze the results of a retreatment regimen using a series of three monthly intravitreal ranibizumab injections (IVR), instead of one injection, and to determine if this treatment scheme can safely reduce the number of injections and the number of visits compared to the widely used PrONTO study retreatment protocol. >Sixty-six eyes of 60 patients with exudative age-related macular degeneration (AMD) were included. The mean follow-up period was 27 months (range, 11–48 months). The mean age of the patients was 79 years (range, 65–93 years). All patients received three initial IVRs, and were retreated with a new series of three monthly IVRs when needed. The retreatment criteria were: visual loss of ≥5 ETDRS letters and/or signs of retinal exudation on OCT, new macular hemorrhage, expansion of new vessels. Follow-up visits were conducted 1 month after the last IVR of each series, and renewed on a monthly basis when no retreatment was required. Each visit included a comprehensive ophthalmological examination with BCVA measurement and OCT examination. Mean VA did not improve during follow-up (53.18 letters at the initial visit versus 54.18 at the last visit, p > 0.05). However, VA stabilized or improved in 66.6 % of the eyes. A gain of ≥15 letters was observed in 28.8 % of eyes. On average, over 2 years, the number of IVRs was five per year, and the number of follow-up visits was four per year. Even if no gain in VA is observed after 2 years, this treatment regimen reduces the number of IVRs and control visits. The proportion of patients with a VA gain of three lines or more was smaller than the one reported in the original PrONTO study, but higher than the rates reported in other studies implementing the PrONTO recommendations in everyday practice. The benefit of the three IVR retreatment scheme should be prospectively studied and compared to the PRN regimen.
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- 2013
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26. Profil étiologique des tumeurs médiastinales de l’adulte
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N. Zidouni, A. Kheliouen, A. Mebrek, A. Kadi, F.Z. Lalami, A.R. Bellal, and L. Baough
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Pulmonary and Respiratory Medicine - Abstract
Introduction Les tumeurs mediastinales regroupent un ensemble heterogene de tumeurs malignes ou benignes du mediastin. Elles sont rares, parfois de decouverte fortuite. Leur etiologie peut etre evoquee selon leur siege et l’âge du patient, mais le diagnostic de certitude est souvent difficile. L’objectif de cette etude : decrire le profil etiologique et les modalites diagnostiques des tumeurs mediastinales. Methodes L’objectif de cette etude : decrire le profil etiologique et les modalites diagnostiques des tumeurs mediastinales. Etude retrospective realisee au service Matiben de 2012 a 2016. Resultats Cinquante-sept cas ont ete colliges, 27 femmes et 30 hommes. On note une predominance de patients jeunes avec un âge moyen de 36 ans et des âges extremes (18–76 ans). Le principal motif de consultation a ete la dyspnee dans 85 % des cas, associee a la douleur thoracique dans plus de la moitie des cas. Des adenopathies peripheriques essentiellement sus claviculaires ont ete retrouvees chez 14 patients, un syndrome cave superieur dans 19 cas, un epanchement pleural a liquide clair dans 7 cas, pericardique dans 6 cas, pleuropericardique dans 02 cas et un chylothorax dans 02 cas. A l’imagerie thoracique : l’atteinte du mediastin anterieure a ete retrouvee dans 2/3 des cas. L’endoscopie bronchique a objective une compression extrinseque dans 38 cas et un bourgeon endobronchique dans 02 cas. Le diagnostic de certitude a ete pose par biopsie transparietale dans 34 cas, biopsie ganglionnaire dans 14 cas, biopsie chirurgicale dans 06 cas, biopsie osteomedullaire dans 02 cas et biopsie bronchique dans 01 cas. Le profil etiologique de ces tumeurs mediastinales a ete le suivant : lymphone non hodgkinien LNH (20 cas), thymome (19 cas), lymphome hodgkinien LH (16 cas), seminome (01 cas) et teratome (01 cas). Une chimiotherapie anti-mitotique avec radiotherapie a ete prescrite a 90 % des cas. 03 patients sont decedes avant le traitement specifique (02 LNH et 01 thymome). Durant le suivi 08 thymomes et 05 LNH sont decedes. Conclusion L’orientation diagnostique des tumeurs mediastinales repose sur la TDM thoracique essentiellement, la biopsie transparietale scanno-guidee est d’un grand apport dans le diagnostic histologique et parfois la chirurgie est necessaire dans certains cas. La prise en charge des tumeurs mediastinales necessite une collaboration etroite entre pneumologue, radiologue et pathologiste.
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- 2018
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27. Dépistage de la rétinopathie diabétique par télédiagnostic dans le Haut-Rhin
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X. Nasica, Y. Benseddik, V. Klinger, P. Holl, P. Lenoble, M. Kheliouen, and D. Bourderont
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Gynecology ,Ophthalmology ,medicine.medical_specialty ,business.industry ,Medical screening ,medicine ,business - Abstract
Resume Introduction Le but de cette etude est de presenter les resultats du depistage de la retinopathie diabetique par retinographe non mydriatique dans le Haut-Rhin. Methode Les resultats de la periode allant de septembre 2004 a decembre 2007 ont ete compares aux resultats deja publies sur le sujet et aux donnees de prevalence nationale. Les patients depistes etaient adresses par un medecin referent a l’un des trois centres (Altkirch, Mulhouse, Thann) pour realisation de trois photographies par œil. Les photographies etaient archivees sur un site Internet et analysees par les ophtalmologues du Centre Hospitalier de Mulhouse. La reponse etait envoyee au medecin referent accompagnee d’une conduite a tenir. Une evaluation du service rendu au patient etait proposee par un questionnaire au medecin traitant. Resultats Au total, 1050 patients ont ete depistes. Dix-huit pour cent des patients presentaient une retinopathie diabetique. La majorite etait des formes non proliferantes minimes et 1,5 % des patients avaient une forme proliferante. L’equilibre glycemique moyen etait de 9,30 % (± 2,55) d’hemoglobine glyquee. L’âge moyen de la population etait de 61,5 ans (± 14,3), l’anciennete du diabete de 16,6 ans (± 7,9). L’evaluation du service rendu a montre un taux effectif de retour du resultat du depistage au medecin referent de 90 %, avec 70 % de consultations ophtalmologiques dans les suites. Conclusion Le depistage de la retinopathie diabetique sous sa forme actuelle dans le Haut-Rhin apporte un reel benefice en termes de sante publique et de prevention des complications.
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- 2009
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28. PID et comorbidités observées dans un service de pneumologie d’Alger
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A. Kheliouen, L. Baough, N. Zidouni, B. Mansouri, and D. Mekideche
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Pulmonary and Respiratory Medicine - Abstract
Introduction Les patients atteints de pneumopathie infiltrante diffuse (PID) ont frequemment des comorbidites en particulier cardiovasculaires et metaboliques. Ces comorbidites ont un impact sur les symptomes justifiant un depistage et une prise en charge concomitante. Objectif Determiner les comorbidites associees aux PID et leur impact sur le devenir des patients ( Fig. 1 ). Methodes Il s’agit d’une etude prospective, descriptive d’une cohorte de 110 patients atteints de PID, hospitalises et suivis pendant 12 mois. Resultats Âge moyen 50 ans avec des extremes (26–71 ans) et une predominance feminine de 68 %. Le nombre de patients avec comorbidite etait 35 (32 %). Les principales comorbidites retrouvees etaient : l’HTA dans 16 cas (46 %), le diabete dans 8 cas (23 %), l’anemie dans 3 cas (10 %), la cardiopathie gauche et la cardiomyopathie dans 2 cas (6 %), l’osteoporose dans 4 cas (12 %) et le reflux gastro-œsophagien dans 2 cas (6 %). L’insuffisance cardiaque droite sans HTAP a ete retrouvee chez 3 patients (10 %) et l’HATP a ete associee dans 2 cas (6 %). Au cours du suivi, parmi ces patients avec comorbidite, 3 sont decedes (10 %) et l’evolution a ete emaillee de complications aggravees par ces comorbidites. Il s’agissait d’exacerbation chez 7 patients (20 %), d’aggravation de l’insuffisance cardiaque avec HTP dans 4 cas (12 %). D’autres complications etaient liees au traitement : aggravation du taux de diabete, de l’HTA et de l’osteoporose de 10 %, 3 % et 12 % respectivement. Surinfection tuberculeuse dans 3 % des cas. Progression de la PID dans 12 cas (46 %) aggravee par les comorbidites. Conclusion Les comorbidites cardiovasculaires et metaboliques sont frequentes au cours des PID. Elles aggravent leur morbidite et alterent la qualite de vie des patients. Les cas de deces ont surtout concerne la fibrose pulmonaire idiopathique et la sclerodermie systemique.
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- 2016
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29. Exacerbation aiguë des PID prises en charge au service Matiben d’Alger
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Kheliouen, A., primary and Zidouni, N., additional
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- 2016
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30. PID et comorbidités observées dans un service de pneumologie d’Alger
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Kheliouen, A., primary, Baough, L., additional, Mekideche, D., additional, Mansouri, B., additional, and Zidouni, N., additional
- Published
- 2016
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31. Exacerbation aiguë des PID prises en charge au service Matiben d’Alger
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A. Kheliouen and N. Zidouni
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Pulmonary and Respiratory Medicine - Abstract
Introduction L’exacerbation aigue des pneumopathies infiltrantes diffuses (PID) est caracterisee par l’aggravation aigue de la dyspnee. Elle est consideree parmi les principales causes de mortalite des patients. Methodes Une etude retrospective est realisee au service Matiben, incluant des patients hospitalises pour exacerbation aigue de PID de janvier 2012 a decembre 2013. Le but de cette etude est de decrire les aspects cliniques, etiologiques et evolutifs des exacerbations de ces PID ( Fig. 1 ). Resultats Quarante-huit exacerbations ont ete colligees chez 17 patients hospitalises, repartis en 11 hommes et 6 femmes avec un âge moyen de 63 ans (45–80 ans). Il s’agissait de : FPI (10 cas), PINS idiopathique (3 cas), PINS en rapport avec une connectivite (2 cas), pneumopathie d’hypersensibilite (1 cas), sarcoidose au stade de fibrose (1 cas). La cause de l’exacerbation etait : infection respiratoire (11 cas), insuffisance cardiaque gauche (2 cas), embolie pulmonaire (1 cas), indeterminee (3 cas). La moitie des patients avait 2 comorbidites : le diabete et l’HTA. Le traitement prescrit etait la corticotherapie a fortes doses, l’antibiotherapie non specifique et le traitement etiologique. Deux patients ont necessite une ventilation invasive. L’evolution immediate a ete marquee par le deces de 7 patients dont 4 FPI. A 12 mois, la PID a ete progressive dans 6 cas. Conclusion Les exacerbations aigues des PID sont un facteur predictif de mauvais pronostic particulierement dans la FPI. Les comorbidites constituent un facteur aggravant de la morbi-mortalite.
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- 2016
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32. Impact de l’approche pratique de santé respiratoire sur la prise en charge de l’asthme
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Alihalassa, S., primary, Baough, L., additional, Kheliouen, A., additional, and Zidouni, N., additional
- Published
- 2015
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33. Manifestations pulmonaires des connectivites observées dans un service de pneumologie d’Alger
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Kheliouen, A., primary, Baough, L., additional, Mekideche, D., additional, Halassa, S. Ali, additional, Hitachi, R., additional, and Zidouni, N., additional
- Published
- 2015
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34. Plasmodium falciparum parasites causing cerebral malaria share variant surface antigens, but are they specific ?
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Francis Lalya, Firmine Viwami, Nabila Kheliouen, Nicaise Tuikue-Ndam, Philippe Deloron, Else Carole Eboumbou Moukoko, Agnès Aubouy, and Christophe Rogier
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Adult ,Male ,lcsh:Arctic medicine. Tropical medicine ,Adolescent ,lcsh:RC955-962 ,Plasmodium falciparum ,Malaria, Cerebral ,Antibodies, Protozoan ,Antigens, Protozoan ,Immunoglobulin G ,Epitope ,lcsh:Infectious and parasitic diseases ,Epitopes ,Young Adult ,Immune system ,Antigen ,Pregnancy ,parasitic diseases ,medicine ,Benin ,Humans ,lcsh:RC109-216 ,Malaria, Falciparum ,Child ,biology ,Research ,Age Factors ,Infant ,Middle Aged ,Flow Cytometry ,medicine.disease ,biology.organism_classification ,Virology ,Infectious Diseases ,Cerebral Malaria ,Case-Control Studies ,Child, Preschool ,Pregnancy Complications, Parasitic ,Antigens, Surface ,Immunology ,biology.protein ,Female ,Parasitology ,Antibody ,Malaria - Abstract
Background Variant surface antigens (VSA) expressed on the surface of Plasmodium falciparum-infected red blood cells constitute a key for parasite sequestration and immune evasion. In distinct malaria pathologies, such as placental malaria, specific antibody response against VSA provides protection. This study investigated the antibody response specifically directed against VSA expressed by parasites isolated from individuals presenting a given type of clinical presentation. Methods Plasma and isolates were obtained from four groups of Beninese subjects: healthy adults, patients presenting uncomplicated malaria (UM), cerebral malaria (CM), or pregnancy-associated malaria (PAM). The reactivity of plasma samples from each clinical group was measured by flow cytometry against parasites isolated from individuals from each clinical group. Results Antibody responses against VSAUM were predominant in CM, UM and HA plasmas. When analysed according to age in all plasma groups, anti-VSACM and -VSAUM antibody levels were similar until six years of age. In older groups (6-18 and >19 years of age), VSAUM antibody levels were higher than VSACM antibody levels (P = .01, P = .0008, respectively). Mean MFI values, measured in all plasmas groups except the PAM plasmas, remained low for anti-VSAPAM antibodies and did not vary with age. One month after infection the level of anti-VSA antibodies able to recognize heterologous VSACM variants was increased in CM patients. In UM patients, antibody levels directed against heterologous VSAUM were similar, both during the infection and one month later. Conclusions In conclusion, this study suggests the existence of serologically distinct VSACM and VSAUM. CM isolates were shown to share common epitopes. Specific antibody response to VSAUM was predominant, suggesting a relative low diversity of VSAUM in the study area.
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- 2010
35. [Screening diabetic retinopathy using a telediagnosis system. Results of the upper Rhine survey]
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P, Lenoble, M, Kheliouen, D, Bourderont, V, Klinger, X, Nasica, Y, Benseddik, and P, Holl
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Adult ,Aged, 80 and over ,Male ,Young Adult ,Diabetic Retinopathy ,Humans ,Female ,Middle Aged ,Telemedicine ,Aged - Abstract
The aim of this study was to present the results of diabetic retinopathy screening using a nonmydriatic fundus camera in the upper Rhine (France).The screening period took place from September 2004 to December 2007. Patients came to three referring medical centers (Altkirch, Mulhouse, Thann) and all had three fundus photographs on both eyes without pupillary dilatation. The data were stored on a website. The photographs were then analyzed by the team of experts from the Department of Ophthalmology of the Mulhouse General Hospital. The results were sent to the general practitioner with treatment guidelines. The campaign was evaluated at the end of the screening period using a questionnaire.In this study, 1050 diabetics patients were screened: 18% had diabetic retinopathy; of these 1.5% had proliferative or serious nonproliferative diabetic retinopathies and 74.2% mild nonproliferative forms. The mean value of hemoglobin A1C was 9.3% (+/-2.55), the patients' mean age of patients was 61.5 (+/-14.3) years, and the mean onset of diabetes was 16.6 (+/-7.9) years before screening. After screening, 70% of the patients consulted an ophthalmologist. Ninety percent of the referent practitioners received the results of the screening.The diabetic retinopathy screening campaign in the upper Rhine provided a real benefit in terms of public health and prevention of diabetic retinal complications.
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- 2008
36. Manifestations pulmonaires des connectivites observées dans un service de pneumologie d’Alger
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N. Zidouni, L. Baough, A. Kheliouen, S. Ali Halassa, D. Mekideche, and R. Hitachi
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Pulmonary and Respiratory Medicine - Abstract
Les manifestations pulmonaires des connectivites sont frequentes et multiples. Elles sont souvent sous-diagnostiquees. L’atteinte interstitielle peut etre revelatrice de la connectivite et peut aggraver son pronostic. Nous rapportons 29 cas de pneumopathies infiltrantes diffuses (PID) associees aux connectivites colliges au service de pneumologie Matiben d’Alger dans le cadre d’une etude prospective et descriptive d’une cohorte de 110 cas de PID recrutes de 2005 a 2008. Il s’agit de 25 femmes et 4 hommes avec un âge moyen de 52 ans. La PID a ete revelatrice de la connectivite dans 17 cas. La symptomatologie respiratoire a ete dominee par la dyspnee et la toux seche. L’aspect TDMHR predominant etait un epaississement des septa inter-lobaires et inter lobulaires avec un verre depoli et rayon de miel localise. Un epanchement pleural a ete associe dans 2 cas (lupique et rhumatoide). Le bilan immunologique etait positif dans tous les cas et la preuve histologique a ete obtenue dans certains cas. Une HTAP a ete associee a l’insuffisance cardiaque droite dans 1 cas de sclerodermie systemique et 1 cas de LES. Les connectivites associees aux PID ont ete les suivantes : PR (n = 9), sclerodermie systemique (n = 8), connectivite mixte (n = 4), syndrome de Gougerot-Sjogren (n = 4), LES (n = 3), vascularite (n = 1). Un traitement cortisone a ete prescrit a tous les patients. L’evolution a ete favorable en cas de LES, cependant la PID a ete progressive en cas de sclerodermie systemique. La PID constitue un facteur de mauvais pronostic dans certaines connectivites. Un diagnostic precoce s’impose afin d’ameliorer son pronostic.
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- 2015
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37. Impact de l’approche pratique de santé respiratoire sur la prise en charge de l’asthme
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S. Alihalassa, N. Zidouni, A. Kheliouen, and L. Baough
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Pulmonary and Respiratory Medicine - Abstract
L’approche pratique de sante respiratoire (APSR) a ete initiee par l’OMS en 1998 dans le but d’ameliorer la prise en charge des maladies respiratoires et de l’asthme en particulier. Dans le but d’evaluer l’impact de cette strategie au niveau des structures de sante d’Algerie, deux enquetes d’intervention de type transversale ont ete realisees entre 2004 et 2007. Objectif Evaluer l’impact de la formation des medecins dans la prise en charge des maladies respiratoires et en particulier de l’asthme. Methode Enquete descriptive de type transversale realisee entre 2004 et 2007, comparant les resultats observes « avant », puis « apres » une session de formation des medecins generalistes et specialistes en pneumologie. Resultats En 2004, l’enquete s’adressant aux medecins generalistes a ameliore le diagnostic de la maladie asthmatique (10,9 % vs 15,9 %) ainsi que la prescription therapeutique (nombre moyen de medicament 2,5 vs 2,3). Une diminution du cout de prise en charge des cas d’asthme a ete constatee. En 2007, l’enquete s’adressant aux medecins generalistes et specialistes a confirme l’impact de cette strategie sur la prise en charge de la maladie asthmatique et notamment l’application des consensus scientifiques (diminution des cas d’asthme non classes de 74 %) et l’utilisation etendue des aerosols doseurs broncho-dilatateurs (7,7 % vs 15,7 %) et des corticoides (3,3 % vs 10,8 %). Conclusions L’APSR ameliore la qualite du diagnostic des cas d’asthme, reduit les investigations complementaires inutiles et accroit l’efficience des soins par la reduction du cout des soins curatifs.
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- 2015
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38. Étude d’une cohorte de PID dans un service spécialisé d’Alger
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Kheliouen, A., primary, Baough, L., additional, Bellal, A.R., additional, Mekideche, D., additional, Boukhezar, F., additional, Zidouni, N., additional, Mansouri, B., additional, and Bendissari, K., additional
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- 2014
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39. Étude d’une cohorte de PID dans un service spécialisé d’Alger
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L. Baough, N. Zidouni, A. Kheliouen, K. Bendissari, F. Boukhezar, B. Mansouri, D. Mekideche, and A.R. Bellal
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Pulmonary and Respiratory Medicine - Published
- 2014
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40. Évaluation de la qualité de vie des malades cancéreux pris en charge dans un service de pneumophtisiologie d’Alger
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Baough, L., primary, Benelfkir, H., additional, Mekidèche, D., additional, Kheliouen, A., additional, and Zidouni, N., additional
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- 2013
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41. Évaluation de la qualité de vie des malades cancéreux pris en charge dans un service de pneumophtisiologie d’Alger
- Author
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L. Baough, N. Zidouni, A. Kheliouen, H. Benelfkir, and D. Mekideche
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Pulmonary and Respiratory Medicine - Published
- 2013
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42. Variant surface antigens in cerebral malaria: distinct from others and similar to each other?
- Author
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Aubouy, Agnès, primary, Kheliouen, Nabila, additional, Tuikue-Ndam, Nicaise, additional, Viwami, Firmine, additional, Lalya, Francis, additional, Eboumbou Moukoko, Else C, additional, Rogier, Christophe, additional, and Deloron, Philippe, additional
- Published
- 2010
- Full Text
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43. Plasmodium falciparum parasites causing cerebral malaria share variant surface antigens, but are they specific?
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Kheliouen, Nabila, primary, Viwami, Firmine, additional, Lalya, Francis, additional, Tuikue-Ndam, Nicaise, additional, Moukoko, Else C Eboumbou, additional, Rogier, Christophe, additional, Deloron, Philippe, additional, and Aubouy, Agnès, additional
- Published
- 2010
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- View/download PDF
44. Variant surface antigens in cerebral malaria: distinct from others and similar to each other?
- Author
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Agnès Aubouy, Firmine Viwami, Else Carole Eboumbou Moukoko, Philippe Deloron, Christophe Rogier, Nabila Kheliouen, Francis Lalya, and Nicaise Tuikue-Ndam
- Subjects
lcsh:Arctic medicine. Tropical medicine ,biology ,lcsh:RC955-962 ,Plasmodium falciparum ,medicine.disease ,biology.organism_classification ,Epitope ,lcsh:Infectious and parasitic diseases ,Infectious Diseases ,Antibody Repertoire ,Antigen ,Parasitology ,Cerebral Malaria ,parasitic diseases ,Immunology ,medicine ,biology.protein ,Oral Presentation ,lcsh:RC109-216 ,Antibody ,Malaria - Abstract
Immunological protection against Plasmodium falciparum blood stages is mainly antibody mediated [1,2]. Variant surface antigens (VSA) expressed on the surface of P. falciparum-infected red blood cells constitute a key for parasite sequestration and immune evasion [3]. In distinct malaria clinical presentations, as placental malaria, specific antibody response against VSA provides protection [4]. In the current study, we investigated in distinct clinical groups of malaria patients, the antibody response specifically directed against VSA expressed by parasites isolated from a given clinical presentation, and particularly isolates obtained from cerebral malaria (CM) patients. Plasma and isolates were obtained from four groups of Beninese subjects: healthy adults (HA, n = 34), patients presenting uncomplicated malaria (UM, n = 62), cerebral malaria (CM, n = 41), or pregnancy-associated malaria (PAM, n = 24). Isolates were tested for their clonality by msp1 and msp2 genotyping. The reactivity of plasma samples from each clinical group was measured by flow cytometry against parasites isolated from individuals from each clinical group. The levels of clonality were similar in isolates from all clinical origins. In healthy adults and children presenting UM, VSAUM antibody levels were higher than VSACM antibody levels (Figure (Figure1).1). In both PAM plasma groups (primigravidae and multigravidae), antibody levels against the three types of isolates were similar. One month after infection the level of anti-VSA antibodies able to recognize heterologous VSACM variants was increased in CM patients. In UM patients, antibody levels directed against heterologous VSAUM were similar during the infection and one month later (Figure (Figure22). Figure 1 Relative levels of VSA specific IgG to heterologous P.falciparum isolates according to the clinical origin of the P. falciparum isolates, and to the plasma group. PG: primigravidae, MG: multigravidae. Errors bars indicate standard errors. Groups were ... Figure 2 Acquisition of VSA-specific IgG during the month following P. falciparum infection in plasmas samples from UM (n = 121) and CM (n = 56) patients. UM (A, B) or CM (C, D) plasma samples were tested against P. falciparum isolates from UM patients (A, D) ... The existence of shared VSACM epitopes was shown but does not necessarily involve prevalent epitopes. Prevalence is more probably due to a fine balance between transmission intensity, antibody repertoire and environmental factors.
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