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Diffuse Alveolar Hemorrhage Associated With Anti-PL-7 Antisynthetase Syndrome: A Case Report.
Case Rep Pulmonol
January 2025
Prisma Health, University of South Carolina-School of Medicine, Columbia, South Carolina, USA.
Diffuse alveolar hemorrhage (DAH) is a potentially life-threatening condition which can present with hemoptysis, diffuse alveolar infiltrates, anemia, and hypoxic respiratory failure. Antisynthetase syndrome (AS) is a rare autoimmune disorder most often characterized by nonerosive arthritis, proximal muscle weakness with elevated muscle enzymes, Raynaud's phenomenon, hyperkeratosis of the digits (mechanic's hands), and interstitial lung disease. According to large population studies, AS has an annual incidence of 0.
View Article and Find Full Text PDFReproductive toxicity and transgenerational effects of co-exposure to polystyrene microplastics and arsenic in zebrafish.
Comp Biochem Physiol C Toxicol Pharmacol
January 2025
Department of Forensic Toxicology, School of Forensic Medicine, Southern Medical University, Guangzhou 510515, China; Guangzhou Key Laboratory of Forensic Multi-Omics for Precision Identification, School of Forensic Medicine, Southern Medical University, Guangzhou 510515, China. Electronic address:
Microplastics (MPs) are ubiquitous environmental pollutants that have garnered significant attention due to their small particle size, resistance to degradation and large specific surface area, which makes it easy to adsorb various pollutants, particularly heavy metals. Arsenic (As), a common metal poisons, poses significant risks due to its widespread industrial use. When MPs and As co-exist in the environment, they can exert combined toxic effects on organisms, affecting various systems, including the nervous system.
View Article and Find Full Text PDFPyrrolysine Aminoacyl-tRNA Synthetase as a Tool for Expanding the Genetic Code.
Int J Mol Sci
January 2025
Biotechnology Department, Sirius University of Science and Technology, 354349 Sirius, Russia.
In addition to the 20 canonical amino acids encoded in the genetic code, there are two non-canonical ones: selenocysteine and pyrrolysine. The discovery of pyrrolysine synthetases (PylRSs) was a key event in the field of genetic code expansion research. The importance of this discovery is mainly due to the fact that the translation systems involving PylRS, pyrrolysine tRNA (tRNA) and pyrrolysine are orthogonal to the endogenous translation systems of organisms that do not use this amino acid in protein synthesis.
View Article and Find Full Text PDFIdentification of Metabolic Characteristic-Pancreatic Ductal Adenocarcinoma Associations Using Mendelian Randomization and Metabolomics.
J Gastrointest Cancer
January 2025
Department of Oncology, Beijing Luhe Hospital Affiliated to Capital Medical University, Beijing, 101149, China.
Background: Metabolic reprogramming is increasingly recognized as a crucial factor influencing the development, progression, and prognosis of pancreatic ductal adenocarcinoma (PDAC). Despite this, the potential association of specific metabolic characteristics and PDAC remains ambiguous due to the variability introduced by individual patient differences. In this study, we aimed to find out metabolic pathways that may be associated with the overall survival (OS) of PDAC patients.
View Article and Find Full Text PDFOptimized Directed Evolution of E. coli leucyl-tRNA Synthetase adds many Noncanonical Amino Acids into the Eukaryotic Genetic Code Including Ornithine and N-Acetyl-Methyllysine.
Angew Chem Int Ed Engl
January 2025
Department of Chemistry, Boston College, 2609 Beacon Street, Chestnut Hill, Massachusetts, 02467.
Site-specific incorporation of noncanonical amino acids (ncAAs) into proteins in eukaryotes has predominantly relied on the pyrrolysyl-tRNA synthetase/tRNA pair. However, access to additional easily engineered pairs is crucial for expanding the structural diversity of the ncAA toolbox in eukaryotes. The Escherichia coli-derived leucyl-tRNA synthetase (EcLeuRS)/tRNA pair presents a particularly promising alternative.
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