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This study explores how topological indices (TIs), which are mathematical descriptors of a drug's molecular structure, can support to predict vital properties and biological activities. This understanding is a key for more effective drug design. We focused on drugs used to treat several arrhythmia conditions, including tachycardias, bradycardias, and premature beats. Our approach combines molecular modeling with decision-making techniques to offer a cost-effective way to understand how these drug molecules behave. Our procedure started with calculating topological indices for the chemical structures of these medications to extract information about their features. We then established quantitative structure-property relationship (QSPR) models using quadratic regression, training and validating them. We concentrated on TIs that showed a strong correlation[Formula: see text] with physicochemical properties. Each property was also weighted, based on its correlation with the topological indices. As a final point, to aid in informed decision-making, we employed multiple-criteria decision-making approaches Technique for Order Preference by Similarity to Ideal Solution TOPSIS and Simple Additive Weighting SAW to rank the anti- arrhythmia medications. Drug Amiodarone ranked highest due to strong correlation with boiling point and polarizability. The study also highlights the potential of machine learning to analyze large datasets, allowing for accurate predictions of chemical behavior. This comprehensive method can facilitate the detection of new drugs with valuable qualities and improve our understanding of how chemical structures affect drug effectiveness.
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http://dx.doi.org/10.1038/s41598-025-14892-2 | DOI Listing |
IEEE Trans Neural Syst Rehabil Eng
September 2025
Obstructive sleep apnea (OSA), one of the most common sleep disorders globally, is closely linked to brain function. Resting-state electroencephalography (EEG), due to its convenience, cost-effectiveness, and high temporal resolution, serves as a valuable tool for exploring the human brain function. This study utilized a large cohort with 968 participants who joined in 15-minute daytime resting-state EEG acquisition and overnight polysomnography (PSG) monitoring.
View Article and Find Full Text PDFACS Macro Lett
September 2025
State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, China.
Poly(3-hexylthiophene) (P3HT)-based complex topological copolymers have attracted a great deal of attention for their unique electrical and optical properties. In this contribution, the P3HT-based Janus fibers with controlled lengths were innovatively prepared by sequential crystallization-driven self-assembly (CDSA) of poly(--butylstyrene)--polyisoprene--poly(3-hexylthiophene) (PBS--PI--P3HT) triblock copolymer, cross-linking of the interlayer PI region, and dissociation of fibers in good solvent. The comprehensive characterizations showed that the PBS/P3HT Janus fibers have nearly half the width of PBS--PI--P3HT fibers and fiber lengths close to or slightly shorter than those of PBS--PI--P3HT fibers, indicating that the Janus fibers with adjustable lengths could be prepared in a large window range.
View Article and Find Full Text PDFCarbohydr Polym
November 2025
Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Resources and International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing 210037, China. Electronic address:
Cellulose nanocrystals (CNCs) have garnered attention for their renewable and reactive nature, yet CNC allomorph II (CNC-II) remains underexplored compared to the extensively studied CNC-I. This study bridges this gap by introducing a two-step carboxylamine condensation strategy to conjugate poly(ethylene glycol) (PEG) onto CNC-II via ethylenediamine, leveraging the high topochemical reactivity of CNC-II. Utilizing bicarboxylate-capped PEG as a probe, quartz crystal microbalance with energy dissipation (QCM-D) assays revealed a significant reactivity increase of 16.
View Article and Find Full Text PDFManifold learning builds on the "manifold hypothesis," which posits that data in high-dimensional datasets are drawn from lower-dimensional manifolds. Current tools generate global embeddings of data, rather than the local maps used to define manifolds mathematically. These tools also cannot assess whether the manifold hypothesis holds true for a dataset.
View Article and Find Full Text PDFManifold learning builds on the "manifold hypothesis," which posits that data in high-dimensional datasets are drawn from lower-dimensional manifolds. Current tools generate global embeddings of data, rather than the local maps used to define manifolds mathematically. These tools also cannot assess whether the manifold hypothesis holds true for a dataset.
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