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Department of Neurology, The First Affiliated Hospital of Anhui Medical University, Hefei, China The pathogenesis of Alzheimer s disease is complex, and early-onset Alzheimer s disease (EOAD) is mostly influenced by genetic factors. Presenilin-1, presenilin-2 (PSEN2), and amyloid precursor protein are currently known as the three main causative genes for autosomal dominant EOAD, with the PSEN2 mutation being the rarest. In this study, we reported a 56-year-old Chinese Han proband who presented with prominent progressive amnesia, aphasia, executive function impairment, and depression 5 years ago. The 3-year follow-up showed that the patient experienced progressive brain atrophy displayed on magnetic resonance imaging (MRI) and dramatic cognitive decline assessed by neuropsychological evaluation. This patient was clinically diagnosed as EOAD based on established criteria. A heterozygous variant (NM 000447.2: c.1106T>C) of PSEN2 was identified for the first time in this patient a ....
A team of scientists from France has recently conducted a study to evaluate the sensitivity of the B.1.617 variant of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) to antibody-mediated neutralization. ....
Nanobody works against all SARS-CoV-2 variants of concern in animal model Researchers based in Belgium have developed a new antibody drug that is highly successful at neutralizing coronavirus disease 2019 (COVID-19) in Syrian hamsters. The new biologic was administered to the rodents and was found to be equally successful at neutralizing the original severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) strain, and also the new mutant variants, such as the South African and UK strains. A pre-print version of the research paper is available to read in full on the Antibody immunity Vaccines represent potent tools for combatting diseases, however, they are limited in some regards. Immunity may be short-lived or less effective in old age groups. Limited vaccine availability in many countries, vaccine hesitancy, are other factors of which the impact is currently uncertain. ....
Researchers at the New York State Department of Health in the United States have said concerning mutations within the B.1.526 lineage of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) that has recently become prevalent in New York State warrant further monitoring. ....