The authors analyse the clinical and epidemiological profile of 63 patients with major Sickle cell and regularly followed up in the department of haematology of the National University Hospital of Brazzaville (CHU) between the 1st of January 1993 and the 30th of June 1996. Acute vasculo occlusive crisis are rare, however anaemic crisis are still present. The average haemoglobin rate between crisis is 7.86 g/dl (extreme values 5.9 to 10.8 g/dl). This study shows that despite the multiple complications, often degenerative, life expectancy of the homozygous sickle cell patient can still be improved.
Sickle cell trait (SCT) has been associated with alterations in various immune-related laboratory parameters including lower circulating lymphocyte counts. To further characterize the impact of SCT on the immune system, we performed flow cytometry of monocyte and lymphocyte immune cell subsets from peripheral blood mononuclear cells collected in a large, community-based cohort of SCT-positive (n = 68) and SCT-negative (n = 959) Black adults. SCT was significantly associated with lower proportions of CD8 and CD4 T cell subsets that include senescent-like markers of repeated immune system challenges.
Training and Research Unit of Excellence, Blantyre, Malawi; School of Global and Public Health, Kamuzu University of Health Sciences, Blantyre, Malawi.
Background: In many sub-Saharan African countries, it is recommended that children with sickle cell anaemia receive malaria chemoprevention with monthly sulfadoxine-pyrimethamine or daily proguanil as the standard of care. However, the efficacy of these interventions is compromised by high-grade antifolate resistance of Plasmodium falciparum and poor adherence. We aimed to compare the efficacy of weekly dihydroartemisinin-piperaquine and monthly sulfadoxine-pyrimethamine for the prevention of clinical malaria in children with sickle cell anaemia in areas with high-grade sulfadoxine-pyrimethamine resistance of P falciparum in Uganda and Malawi.
Background: Children with sickle cell anemia (SCA) in Sub-Saharan Africa are at high risk of sickle cerebrovascular injury (SCVI). Hydroxyurea, a commonly used disease-modifying therapy, may reduce SCVI resulting in potential impact on reducing stroke and cognitive dysfunction. We aim to test the impact of daily hydroxyurea therapy on these outcomes in Ugandan children with SCA.
Objective: We aim to demonstrate the versatility of the All of Us database as an important source of rare and undiagnosed disease (RUD) data, because of its large size and range of data types.
Materials And Methods: We searched the public data browser, electronic health record (EHR), and several surveys to investigate the prevalence, mental health, healthcare access, and other data of select RUDs.
Results: Several RUDs have participants in All of Us [eg, 75 of 100 rare infectious diseases (RIDs)].
