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Mortality of HIV-Infected Patients on Antiretroviral Therapy in a Large Public Cohort in West Africa, Burkina Faso: Frequency and Associated Factors

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Advances in Infectious Diseases 2013年第4期3卷 281-289页

作者： Armel Poda Arsène Hema Jacques Zoungrana Nongodo Firmin Kaboré Bebar Euloges Kamboulé Ibrahim Soré Guillaume Bado Abdoul-Salam Ouédraogo Nicolas Meda adrien bruno sawadogo Day Care Hospital for HIV-Patients of Bobo Dioulasso Department of Infectious Diseases Souro Sanou Teaching Hospital Bobo Dioulasso Burkina Faso Day Care Hospital for HIV-Patients of Bobo Dioulasso Department of Infectious Diseases Souro Sanou Teaching Hospital Bobo Dioulasso Burkina Faso Department of Virology and Bacteriology Souro Sanou Teaching Hospital Bobo Dioulasso Burkina Faso School of Medicine University of Bobo Dioulasso Bobo Dioulasso Burkina Faso Day Care Hospital for HIV-Patients of Bobo Dioulasso Department of Infectious Diseases Souro Sanou Teaching Hospital Bobo Dioulasso Burkina Faso School of Medicine University of Bobo Dioulasso Bobo Dioulasso Burkina Faso Department of Virology and Bacteriology Souro Sanou Teaching Hospital Bobo Dioulasso Burkina Faso School of Medicine University of Ouagadougou Ouagadougou Burkina Faso Muraz Center Bobo Dioulasso Burkina Faso

Background: In sub Saharan Africa, small size surveys have demonstrated early high mortality among infected patients on antiretroviral therapies (ART). Few studies have been conducted in large cohorts of HIV-patients in public health care system in West Africa. Objectives: Our study aims to determine mortality rate and its predictors in a cohort of patients on ART in a public daycare hospital in Burkina Faso. Methods: We have carried out a retrospective cohort study. All HIV-infected patients on ART between January 1st 2008 and December 31st 2011 were included in the study. Survival probability was estimated by the Kaplan-Meier method. Cox regression analysis was used to identify associated factors to mortality. Results: A total of 2243 HIV-infected patients were included in the study. During the follow-up, 218 patients representing 9.7% were lost. About 104 patients representing 4.6% were transferred and 1691 representing 75.4% were still in the therapeutic cohort. There were 230 death cases for a total of 4282 persons-years, (5.4 deaths for 100 persons-years;95% CI: 4.8 -6.3). The survival probabilities after 6 months, 1 year and 2 years were 92.6%, 91% and 88.9% respectively. For the multivariate analysis, the following factors were independently associated to death: male gender, BMI .5 kg/m2, WHO stage 3 and 4, HIV-2, T-CD4 lymphocytes < 200/μl, haemoglobin rate g/dl and creatinine clearance 2. Conclusions: Our study provides for the first time mortality rates and its predictors among HIV-patients on antiretroviral treatment in a large cohort in public health sector in Burkina Faso. It highlights the importance of early HIV screening to limit ART initiation at advanced HIV infection stages.

关键词： Antiretroviral Therapy Burkina Faso HIV Mortality West Africa

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Flow fields and particle trajectories beneath a tidal bore:A numerical study

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International Journal of Sediment Research 2018年第3期33卷 351-370页

作者： adrien Berchet bruno Simon Anthony Beaudoin Pierre Lubin Germain Rousseaux Serge Huberson Institut Pprime Université de Bordeaux

Tidal bores may appear in some estuaries when the tides quickly reach a high level. This phenomenon is rare but has a strong impact during its short duration: i.e. the river bed is significantly eroded and sediments are then transported. In this paper, the trajectories of suspended particles induced by this flow are numerically studied. Four undular bores with Froude numbers between 1.1 and 1.2 are *** similar Froude numbers, various initial flow conditions were selected to produce or not an inversion of the flow direction during the bore passage. The particle trajectories associated with each distinct flow configuration are presented and analyzed. These trajectories, estimated by solving the Maxey-Riley equation, appear to be very different even though the Froude numbers of flows are *** observations are important because the Froude number is often used to characterize a tidal bore as it describes well the free surface, however, it cannot describe the sediment transport. Finally, Chen’s model of wave-current interactions is adapted to fit the cases studied and is applied to the four bores simulated. The results highlight that this latter model can reproduce the observed trajectories and dissociate their different components. From this model, it is shown that the inertial and Basset history effects can be neglected compared to the gravity and flow entrainment effects due to the viscous drag when one wants to determine the long-term trajectories of suspended particles.

关键词： Tidal bores Sediment transport Trajectories Physical modeling Numerical modeling

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What Tool for Diagnosis of Latent Tuberculosis Infection in Developing Country with Tuberculosis High Burden: Interferon Gamma Release Assays versus Tuberculin Skin Test in Burkina Faso

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Advances in Infectious Diseases 2022年第4期12卷 668-684页

作者： Diakourga Arthur Djibougou Gloria Ivy Mensah Tibila Kientega Leon Tinnoaga sawadogo Hervé Hien Clément Ziemlé Meda adrien Marie-Gaston Belem Roch Konbobr Dabiré Bassirou Bonfoh Kennedy Kwasi Addo Potiandi Serge Diagbouga Université Nazi BONI Bobo-Dioulasso Burkina Faso Centre MURAZ/Institut National de Santé Publique Bobo-Dioulasso Burkina Faso Centre National de Recherche Scientifique et Technologique/Institut de Recherche en Sciences de la Santé Ouagadougou Burkina Faso Department of Bacteriology Noguchi Memorial Institute for Medical Research College of Health Sciences University of Ghana Legon Accra Ghana Université de Montréal Centre de recherche du Centre hospitalier de l’universitaire de Montréal (CRCHUM) Montréal Canada Programme National Tuberculose Ministry of Health Ouagadougou Burkina Faso Centre Suisse de Recherches Scientifique de Cô te d’Ivoire Abidjan C&#244 te d’Ivoire Etudes Formation et Recherches Développement en Santé (EFORDS) Ouagadougou Burkina Faso

Background: The diagnosis and treatment of active tuberculosis and the detection/management of latent tuberculosis infection (LTBI) cases are the two main strategies for the TB control, particularly in endemic countries. Tuberculin skin test (TST) and Interferon Gamma Release Assays (IGRAs) are tools for detection of LTBI. The objective of this study was to evaluate the performance of the TST and QuantiFERON-TB Gold Plus® (QTF-Plus) and to identify a threshold for TST in best agreement with QTF-Plus for LTBI detection in a high TB burden setting. Methods: In July 2020, a cross-sectional analytical study was performed for QFT-Plus using blood samples and TST in 101 individuals with a high risk of TB living in Bobo-Dioulasso, Burkina Faso. A crude comparison between both tests was done and receiver operating characteristic curve was generated to determine TST’s threshold. TST sensitivity, specificity, predictive values and accuracy were calculated. Adjusted agreement between TST and QFT-Plus was evaluated. Results: With the minimum threshold of positivity set at 5 mm for TST, the overall agreement between the latter and QFT-Plus was poor with a Kappa coefficient (κ) rated at 0.319 (95% CI: 0.131 - 0.508). This cut-off yielded a sensitivity of 94.12% (95% CI: 88.53 - 99.71), and very poor specificity of 36.4% (95% IC: 25.0 - 47.80). However, an adjusted cut-off set at 11 mm gave a better specificity of 72.73% (95% CI: 62.1 - 83.30) of TST and improved the PPV (86%). Moreover, concordance between both tests was improved with κ at 0.56 (95% CI: 0.385 - 0.728) and 80.20% of accuracy. Factors associated with discordance between TST (11 mm) and QFT-Plus results were BCG vaccination, OR = 7.53 (95% CI: 1.43 - 139.25), p = 0.05 and chronic cough, OR = 5.07 (95% CI: 1.27 - 20.43), p = 0.01. Conclusions: This study showed that using a minimal cut-off of 11mm for TST significantly improved the concordance between QTF-Plus (IGRA) and TST. Using the cut-off TST of

关键词： LTBI Diagnosis IGRA TST Threshold Concordance Burkina Faso

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Isolation of Anti Ageing Molecules Secreted by Human Gingival Stem Cells. Protection of Collagen and Elastic Networks

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Journal of Cosmetics, Dermatological Sciences and Applications 2014年第3期4卷 156-165页

作者： Hafida Cherifi adrien Naveau Ludwig Loison Robert bruno Gogly Dental Department A. Chenevier-H. Mondor Hospital Creteil France Dental Department A. Chenevier-H. Mondor Hospital Créteil France

Skin aging results in an imbalance between synthesis and degradation of the extracellular matrix. Overproduction of degradative enzymes (MMPs) and oxygen free radicals during chronological and photo-induced aging leads a degradation of the network and elastic skin collagen. Our previous work demonstrated that a culture supernatant of gingival stem cells had anti-aging activities in vitro, ex vivo and in vivo in humans. However, this culture medium is very complex and currently not responding to the European cosmetics regulation. After the analysis of the culture medium we have isolated 4 molecules interesting in terms of skin anti-aging activity: TIMP1, Selenium, Folic Acid and Glycin (TSAG). After the study of the most efficiency concentration of each molecule, the composition of TSAG is tested on irradiated UVA human dermal fibroblast and human skin. TSAG preserves the elastin and collagen network and inhibits the MMP1, MMP3 and MMP9 activities. The advantage of this mimetic solution of stem cells is to be stable, easily reproducible and non-human origin. The outlook for cosmetology seems interesting.

关键词： Human Gingival Stem Cell MMPs Collagen Elastin

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Inhibition of elastin and collagen networks degradation in human skin by gingival fibroblast. In vitro, ex vivo and in vivo studies.

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Journal of Cosmetics, Dermatological Sciences and Applications 2011年第1期1卷 4-14页

作者： bruno Gogly Francois Come Ferré Hafida Cherifi adrien Naveau Benjamin Philippe Fournier 不详

Skin aging shows an imbalance between synthesis and degradation of the extracellular matrix. The overproduction of degradative enzymes (MMPs) during the chronology- and photo-induced aging leads to a degradation of the elastic and collagen networks. In a model of collagen and elastin destruction, we showed that the gingival fibroblast was able to preserve these macromolecules by inhibiting the overproduction of metalloproteinases by overproduction of TIMP-1 and modulation of the inflammatory cytokines activity. The objective of this study is to evaluate the effect of the gingival fibroblasts on human skin. The results in vitro and ex vivo show that the gingival fibroblast protects the skin collagen and elastic network by the inhibition of MMPs which leads to an overproduction of the TIMP-1. Moreover, the gingival fibroblast modulates the activity of some enzymes responsible for the inflammation;they inhibit the IL-1β and stimulate the production of TGF-β1. In vivo studies with a duration of six months and 50 women with pronounced wrinkles show that the culture supernatant of gingival fibroblasts diluted to 5% leads to a statistically significant decrease in the number and length of wrinkles.

关键词： elastin collagen skin Matrix Metalloproteinases gingival fibroblast

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