Etude de la cinétique de l’hémolyse dans les poches de concentrés érythrocytaires des donneurs de sanghétérozygotes AS et son implication transfusionnelle

Introduction: Le don de sang par le sujet drépanocytaire hétérozygote AS constitue un champ d’investigation peu exploré.Objectif: Contribuer à la définition des conditions du don de sang par les sujets AS.Methodologie: Il s’agissait d’une étude prospective horizontale qui s’est déroulée au Centre National de Transfusion Sanguine (CNTS) à Abidjan-Treichville sur une durée de 02 mois d’octobre 2010 à novembre 2010. Nous avons sélectionné 11 donneurs AS dans une population de donneurs de sang réguliers et 11 donneurs témoins AA. Tous répondaient aux critères d’ap tude au don. Une Numération Formule Sanguine (NFS) et un dosage de la kaliémie ont été réalisés à Jour 0 Jour 10 Jour 20 et Jour 30. Les dosages ont été faits de façon comparative.Resultats: Le taux d’hémoglobine moyen de nos donneurs avant le don était supérieur ou égal à 12g/dl. On observait une diminution du taux d’hémoglobine dans le temps à par r de Jour 10 chez les AS. Chez les AA, après une diminution brève à Jour 10, le taux restait stable dans le temps. Le poids moyen en hémoglobine des poches issues de donneurs AS était proche des normes de production des Concentrés de Globules Rouges à Jour 0 et Jour 10 mais le poids baissait à partir de Jour 20. Le poids en hémoglobine des poches AS était inférieur à celui des poches AA. La kaliémie augmentait dans le temps, ceci traduisait indirectement l’hémolyse. Cette augmentation de la kaliémie était paradoxalement plus importante chez les AA que les AS.Conclusion: Cette étude montre une cinétique de l’hémolyse plus importante dans les poches AS à partir de Jour 10.Mots Clés: Cinétique, Hémolyse, Trait drépanocytaireEnglish AbstractEnglish Title: Study of the kinetics of hemolysis in red cell concentrated blood units from heterogenous AS sickle cell blood donors and its transfusion implication.Introduction: Blood donation from heterogeneous AS sickle cell donors represents a little explored field of research.Objective: To contribute to define of blood donation conditions by AS subjects.Methodology: This was a prospective and cross-sectional study held at the National Blood Transfusion Center (CNTS) Abidjan-Treichville over a period of 02 months from October 2010 to November 2010. We selected 11 AS donors in a population of repeat blood donors and 11 AA donors who served as controls. All met the suitability criteria for donation. A full blood count (FBC) and a monitoring of serum potassium were done at Day 0, Day 10 Day 20 and Day 30. The results of assays were done compared.Results: The mean hemoglobin levels of our donors before donation was greater than or equal to 12g / dl. We observed a decrease in hemoglobin levels over the me from Day 10 in AS. In AA, after a brief decline at Day 10, the rate remained stable over the time. The average weight of hemoglobin AS donors in blood bags was close to those of standards of Red Cell Concentrates on Day 0 and Day 10 but the weight felt from Day 20. Weights of hemoglobin AS blood bags were lower than those of AA. Serum potassium levels increased over the time, it indirectly reflected hemolysis. The increase in serum potassium was paradoxically higher in the AA than in AS blood units.Conclusion: This study shows that hemolysis kinetic is more important in AS blood units from Day 10

Expanding Research Capacity in Sub-Saharan Africa Through Informatics, Bioinformatics, and Data Science Training Programs in Mali

Bioinformatics and data science research have boundless potential across Africa due to its high levels of genetic diversity and disproportionate burden of infectious diseases, including malaria, tuberculosis, HIV and AIDS, Ebola virus disease, and Lassa fever. This work lays out an incremental approach for reaching underserved countries in bioinformatics and data science research through a progression of capacity building, training, and research efforts. Two global health informatics training programs sponsored by the Fogarty International Center (FIC) were carried out at the University of Sciences, Techniques and Technologies of Bamako, Mali (USTTB) between 1999 and 2011. Together with capacity building efforts through the West Africa International Centers of Excellence in Malaria Research (ICEMR), this progress laid the groundwork for a bioinformatics and data science training program launched at USTTB as part of the Human Heredity and Health in Africa (H3Africa) initiative. Prior to the global health informatics training, its trainees published first or second authorship and third or higher authorship manuscripts at rates of 0.40 and 0.10 per year, respectively. Following the training, these rates increased to 0.70 and 1.23 per year, respectively, which was a statistically significant increase (p < 0.001). The bioinformatics and data science training program at USTTB commenced in 2017 focusing on student, faculty, and curriculum tiers of enhancement. The program’s sustainable measures included institutional support for core elements, university tuition and fees, resource sharing and coordination with local research projects and companion training programs, increased student and faculty publication rates, and increased research proposal submissions. Challenges reliance of high-speed bandwidth availability on short-term funding, lack of a discounted software portal for basic software applications, protracted application processes for United States visas, lack of industry job positions, and low publication rates in the areas of bioinformatics and data science. Long-term, incremental processes are necessary for engaging historically underserved countries in bioinformatics and data science research. The multi-tiered enhancement approach laid out here provides a platform for generating bioinformatics and data science technicians, teachers, researchers, and program managers. Increased literature on bioinformatics and data science training approaches and progress is needed to provide a framework for establishing benchmarks on the topics