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An adenosine analog shows high antiviral potency against coronavirus and arenavirus mainly through an unusual base pairing mode.
Nat Commun
December 2024
Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, China.
By targeting the essential viral RNA-dependent RNA polymerase (RdRP), nucleoside analogs (NAs) have exhibited great potential in antiviral therapy for RNA virus-related diseases. However, most ribose-modified NAs do not present broad-spectrum features, likely due to differences in ribose-RdRP interactions across virus families. Here, we show that HNC-1664, an adenosine analog with modifications both in ribose and base, has broad-spectrum antiviral activity against positive-strand coronaviruses and negative-strand arenaviruses.
View Article and Find Full Text PDFA novel de novo GABRA2 gene missense variant causing developmental epileptic encephalopathy in a Chinese patient.
Ann Clin Transl Neurol
December 2024
Department of Pediatrics, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, P. R. China.
Background: Variants in the GABRA2 gene, which encodes the α2 subunit of the γ-aminobutyric acid A receptor, have been linked to a rare form of developmental and epileptic encephalopathy (DEE) referred to as DEE78. Only eight patients have been reported globally. This study presents the clinical presentation and genetic analysis of a Chinese family with a child diagnosed with DEE78, due to a novel GABRA2 variant.
View Article and Find Full Text PDFPlasma Exchange and N-Acetylcysteine Therapy in a Case of Congenital Thrombotic Thrombocytopenic Purpura Presenting With Acute Renal Failure.
J Pediatr Hematol Oncol
January 2025
Departments of Pediatric Hematology.
Congenital thrombotic thrombocytopenic purpura (cTTP), which is associated with mutations in the gene for a disintegrin and metalloproteinase with a thrombospondin type 1 motif member 13 (ADAMTS13), is a chronic and lifelong disease. The clinical course is variable. Regularly using ADAMTS13-containing products such as fresh frozen plasma (FFP) for long-term prophylaxis is the most important treatment to prevent thrombotic microangiopathy (TMA) episodes.
View Article and Find Full Text PDFnsP2 Protease Inhibitor Blocks the Replication of New World Alphaviruses and Offer Protection in Mice.
ACS Infect Dis
December 2024
Chemistry and Biotechnology Science and Engineering Program, College of Science, The University of Alabama in Huntsville, Huntsville, Alabama 35899, United States.
New World alphaviruses, including Venezuelan equine encephalitis virus (VEEV), eastern equine encephalitis virus (EEEV), and western equine encephalitis virus (WEEV), are mosquito-transmitted viruses that cause disease in humans. These viruses are endemic to the western hemisphere, and disease in humans may lead to encephalitis and long-term neurological sequelae. There are currently no FDA-approved vaccines or antiviral therapeutics available for the prevention or treatment of diseases caused by these viruses.
View Article and Find Full Text PDFBlood-brain barrier disruption and microglial activation during hypoxia and post-hypoxic recovery in aged mice.
Brain Commun
December 2024
San Diego Biomedical Research Institute, San Diego, CA 92121, USA.
Hypoxia triggers blood-brain barrier disruption and a strong microglial activation response around leaky cerebral blood vessels. These events are greatly amplified in aged mice which is translationally relevant because aged patients are far more likely to suffer hypoxic events from heart or lung disease, and because of the pathogenic role of blood-brain barrier breakdown in vascular dementia. Importantly, it is currently unclear if disrupted cerebral blood vessels spontaneously repair and if they do, whether surrounding microglia deactivates.
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