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Axial Spondyloarthritis Clinical Research Year in Review: SPARTAN 2024 Annual Meeting Proceedings.
Curr Rheumatol Rep
January 2025
Division of Arthritis and Rheumatic Diseases, Oregon Health & Science University, Portland, USA.
Purpose Of Review: The purpose of this review is to highlight high impact clinical research in axial spondyloarthritis that was published between May 2023 and April 2024. These publications were presented at the SPARTAN annual meeting in May 2024.
Recent Findings: Three publications addressed the rate and predictors of radiographic progression in axial spondyloarthritis.
Xanthine Nucleosides with Pyrazolo[3,4-]pyrimidine Skeleton: Functionalization with Halogen Atoms, Clickable Side Chains, Pyrene, and iEDDA Cycloadducts, and Impact of Ionic Forms on Photophysical Properties.
J Org Chem
January 2025
Laboratory of Bioorganic Chemistry and Chemical Biology, Center for Nanotechnology, Heisenbergstrasse 11, 48149 Münster, Germany.
Xanthine nucleosides play a significant role in the expansion of the four-letter genetic code. Herein, 7-functionalized 8-aza-7-deazaxanthine ribo- and 2'-deoxyribonucleosides are described. 2-Amino-6-alkoxy nucleosides were converted to halogenated 8-aza-7-deazaxanthine nucleosides by deamination followed by hydroxy/alkoxy substitution.
View Article and Find Full Text PDFStructural Categorization of Adenine, Guanine, and Xanthine Derivatives Using Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry with 5-Nitrosalicylic Acid and 1,5-Diaminonaphtalene.
J Am Soc Mass Spectrom
January 2025
Suntory Institute for Bioorganic Research, Suntory Foundation for Life Sciences, 8-1-1 Seikadai, Seika-Cho, Soraku-Gun, Kyoto 619-0284 Japan.
In this study, we analyzed purine derivatives using multimatrix variation matrix-assisted laser desorption ionization mass spectrometry (MALDI MS) with α-cyano-4-hydroxycinnamic acid (CHCA), 1,5-diaminonaphtalene (DAN), 5-formylsalicylic acid (FSA), and 5-nitrosalicylic acid (NSA) as matrices. Further, we focused on the abstraction/attachment of hydrogen from/to analytes and detected [M - H], [M + 2H] and/or [M + 3H] in MALDI MS spectra of compounds containing nitrogen and/or carbonyl oxygen. Although [M - H] generation of purine compounds in MALDI MS with conventional matrices was challenging, NSA-MALDI MS effectively yielded the [M - H]species of purine derivatives compared with CHCA, FSA, and DAN, and the [M - H]/[M + H] ratios reflected their structures, such as the substituting groups and positions.
View Article and Find Full Text PDFExploring Molecular Genetics Research on Obesity in Malaysia: Protocol for a Scoping Review.
JMIR Res Protoc
December 2024
Endocrine and Metabolic Unit, Nutrition, Metabolism and Cardiovascular Research Centre, Institute for Medical Research, National Institutes of Health, Ministry of Health Malaysia, Selangor, Malaysia.
Background: Obesity presents a growing challenge to public health, and its intricate association with genetics continues to be a compelling field of study. In countries such as Malaysia, where diverse genetic backgrounds converge, exploring the molecular genetics of obesity is even more imperative.
Objective: This scoping review aimed to explore the literature on molecular genetics of obesity in Malaysia.
Basic Science and Pathogenesis.
Alzheimers Dement
December 2024
University of California, Berkeley, Berkeley, CA, USA.
Background: The amyloid cascade hypothesis posits a sequence of events proceeding from amyloid-β (Aβ) deposition to entorhinal cortical (EC) tau to neocortical (meta-temporal) tau. This study examined how genetics may modify relationships between these variables on the AD pathway.
Methods: We used causal path analyses to model effects of sex, APOE-ε4 (0,1,2 alleles), and genetic risk for neuroinflammation on Aβ, EC tau and meta temporal tau.
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