Publications by authors named "J H James Choi"

Purpose: Although insufficient sleep influences cognitive function and physical and mental health in adolescents, many still get less sleep than the recommended duration. Adolescent substance use, including alcohol and tobacco, influences sleep disturbance. However, sex differences in the relationship between substance use and sleep health have not been extensively studied.

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Background: The global spread of antibiotic resistance presents a significant threat to human, animal, and plant health. Metagenomic sequencing is increasingly being utilized to profile antibiotic resistance genes (ARGs) in various environments, but presently a mechanism for predicting future trends in ARG occurrence patterns is lacking. Capability of forecasting ARG abundance trends could be extremely valuable towards informing policy and practice aimed at mitigating the evolution and spread of ARGs.

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Single-omics approaches often provide a limited view of complex biological systems, whereas multiomics integration offers a more comprehensive understanding by combining diverse data views. However, integrating heterogeneous data types and interpreting the intricate relationships between biological features-both within and across different data views-remains a bottleneck. To address these challenges, we introduce COSIME (Cooperative Multi-view Integration and Scalable Interpretable Model Explainer).

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An 84-year-old lady presented with 1 day history of sudden onset generalized abdominal pain, fevers, and peritonism. Computed tomography was suggestive of a mid-small bowel perforation associated with a distal ovoid soft tissue density structure without pneumobilia. An urgent laparotomy demonstrated two areas of jejunal diverticula necrosis and perforation associated with a 3 cm luminal mass in the proximal ileum, and proximal small bowel dilatation.

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This study proposes fluorenylmethoxycarbonyl (Fmoc)-protected single amino acids (Fmoc-AAs) as a minimalistic model system to investigate liquid-liquid phase separation (LLPS) and the elusive liquid-to-solid transition of condensates. We demonstrated that Fmoc-AAs exhibit LLPS depending on the pH and ionic strength, primarily driven by hydrophobic interactions. Systematic examination of the conditions under which each Fmoc-AA undergoes LLPS revealed distinct residue-dependent trends in the critical concentrations and phase behavior.

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