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Photon-counting detector CTA to assess intracranial stents and flow diverters: an in vivo study with ultrahigh-resolution spectral reconstructions.
Eur Radiol Exp
January 2025
Department of Neuroradiology, University hospital RWTH Aachen, Aachen, Germany.
Background: To define optimal parameters for the evaluation of vessel visibility in intracranial stents (ICS) and flow diverters (FD) using photon-counting detector computed tomography angiography (PCD-CTA) with spectral reconstructions.
Methods: We retrospectively analyzed consecutive patients with implanted ICS or FD, who received a PCD-CTA between April 2023 and March 2024. Polyenergetic, virtual monoenergetic, pure lumen, and iodine reconstructions with different keV levels (40, 60, and 80) and reconstruction kernels (body vascular [Bv]48, Bv56, Bv64, Bv72, and Bv76) were evaluated by two radiologists with regions of interests and Likert scales.
Controlins I-X, Resin Glycosides from the Seeds of and Their Biological Activities.
J Nat Prod
January 2025
School of Pharmacy, Nantong University, 9 Seyuan Road, Nantong 226019, People's Republic of China.
Ten new resin glycosides, controlins I-X (-), were isolated from the seeds of . Their structures were established by spectroscopic analysis as well as by chemical means. Compounds were identified as glycosidic acid methyl esters, considered as artifacts generated via transesterification with MeOH from natural resin glycosides.
View Article and Find Full Text PDFObservation of Ɛ-AlKeggin-Oligonucleotide Complexes in Analytical Sample Solutions.
J Pharm Sci
January 2025
Ionis Pharmaceuticals, Inc., 2855 Gazelle Ct., Carlsbad, CA 92010. Electronic address:
Complexes formed between aluminum cluster molecules that adopt a Ɛ-Al-Keggin structure and antisense oligonucleotides were observed as new impurity peaks during drug product stability testing. The Ɛ-Al-Keggin molecules were determined to be artifacts of the analysis, originating from contact between antisense oligonucleotide drug product solution and aluminum weigh boats used to prepare the analytical sample solutions The presence of the Ɛ-Al-Keggin molecules was confirmed through synthesis of the Keggin molecule through an established route and subsequent spiking studies. Binding affinity studies revealed that the Ɛ-Al-Keggin bound to oligonucleotide sequences of various lengths (10 to 20 bases) and base compositions, though there is some evidence for preferential binding to 5-methylcytosine-containing sequences.
View Article and Find Full Text PDFNeural Sensitivity to Ambiguous Social Exclusion Reflects Information Processing Bias in Midadolescents With Higher Levels of Aggression.
Dev Psychobiol
January 2025
Department of Psychology, University of Texas at Dallas, Richardson, Texas, USA.
Aggression is commonly associated with increased experiences of peer rejection and maladaptive social information processing biases throughout development. Little is known about the neural correlates of peer rejection that might underlie social information processing biases, and whether these neural correlates are common or different across early- and mid-adolescents on a continuum of aggression. Using the Cyberball task, we examined mediofrontal theta (4-7 Hz) event-related EEG spectral power during conditions of explicit and ambiguous social exclusion in 117 participants (57 early adolescents, ages 10-12 years, and 60 mid-adolescents, ages 14-16 years).
View Article and Find Full Text PDFGel immersion in endoscopy: Exploring potential applications.
World J Gastroenterol
January 2025
Department of Internal Medicine, Asahikawa Medical University, Asahikawa 078-8510, Hokkaido, Japan.
The challenge of effectively eliminating air during gastrointestinal endoscopy using ultrasound techniques is apparent. This difficulty arises from the intricacies of removing concealed air within the folds of the gastrointestinal tract, resulting in artifacts and compromised visualization. In addition, the overlap of folds with lesions can obscure their depth and size, presenting challenges for an accurate assessment.
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