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Arterial Input Function Dispersal on Acute Brain CT Perfusion Scan in Patients With Acute Stroke and an Intracardiac Thrombus.
Neurology
February 2025
Department of Neurology, John Hunter Hospital, Newcastle, Australia.
Article Synopsis
- Hyperacute cardiac CT is more effective than transthoracic echocardiography in detecting intracardiac thrombus, but its routine use is limited due to costs and risks.
- A study of 1,136 ischemic stroke or TIA patients found that longer arterial input function (AIF) dispersal times correlate with the presence of thrombus and worse outcomes, with a specific cutoff of 33 seconds indicating higher risk.
- The findings support using AIF dispersal measurements to help identify patients who may benefit from cardiac imaging, potentially optimizing resource use in stroke management.
Isolation and identification of two novel PDE-5 inhibitors illegally added to pressed candies.
Food Addit Contam Part A Chem Anal Control Expo Risk Assess
January 2025
Shanxi Key Laboratory of Food and Drug Safety Prevention and Control, Inspection and Testing Center of Shanxi Province, Taiyuan, Shanxi, China.
Two novel phosphodiesterase 5 (PDE-5) inhibitors were detected in pressed candy using high-performance liquid chromatography (HPLC)-diode array detection. Following extraction with acetonitrile and sonication, the compounds were isolated and purified semi-preparative liquid chromatography. Structural characterisation was achieved through high-resolution mass spectrometry (HRMS) and nuclear magnetic resonance (NMR) spectroscopy.
View Article and Find Full Text PDFDelayed Versus Atypical Speech Sound Development: A Markedness-Based Analysis of Speech Sound Disorder in Cantonese.
J Speech Lang Hear Res
January 2025
Division of Speech and Hearing Sciences, The University of Hong Kong, China.
Purpose: Speech sound disorder (SSD) is one of the major speech disorders in school-age children. Given the heterogeneity in terms of subtypes within SSD, there is a need to develop techniques for a quick identification of these subtypes. Furthermore, given the paucity of studies from children with SSD from Cantonese-speaking homes and a noted prevalence of SSDs in Cantonese-speaking children, it becomes even more important to investigate the subtypes of SSDs in Cantonese-speaking children.
View Article and Find Full Text PDFIdentification of novel PfEMP1 variants containing domain cassettes 11, 15 and 8 that mediate the Plasmodium falciparum virulence-associated rosetting phenotype.
PLoS Pathog
January 2025
Institute of Immunology and Infection Research, School of Biological Sciences, University of Edinburgh, Edinburgh, United Kingdom.
Plasmodium falciparum erythrocyte membrane protein 1 (PfEMP1) is a diverse family of variant surface antigens, encoded by var genes, that mediates binding of infected erythrocytes to human cells and plays a key role in parasite immune evasion and malaria pathology. The increased availability of parasite genome sequence data has revolutionised the study of PfEMP1 diversity across multiple P. falciparum isolates.
View Article and Find Full Text PDFIdentification of novel genes responsible for a pollen killer present in local natural populations of Arabidopsis thaliana.
PLoS Genet
January 2025
Université Paris-Saclay, INRAE, AgroParisTech, Institute Jean-Pierre Bourgin for Plant Sciences (IJPB), Versailles, France.
Gamete killers are genetic loci that distort segregation in the progeny of hybrids because the killer allele promotes the elimination of the gametes that carry the sensitive allele. They are widely distributed in eukaryotes and are important for understanding genome evolution and speciation. We had previously identified a pollen killer in hybrids between two distant natural accessions of Arabidopsis thaliana.
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