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Desalting of oligonucleotides through precipitation for mass spectrometric analysis.
Nucleosides Nucleotides Nucleic Acids
January 2025
Department of Chemistry and Centre for Biotechnology, Brock University, St. Catharines, ON, Canada.
Contamination of sodium ions in oligonucleotides often causes issues in mass spectrometric analysis. This study investigated the efficiency of the combination of ammonium acetate and alcohol in desalting oligonucleotides. It was found that oligonucleotide samples containing up to 4 M NaCl can be effectively desalted through precipitation with ethanol or isopropanol in the presence of 1 or 5 M ammonium acetate.
View Article and Find Full Text PDFComplex species structure of (Digenea: Lecithasteridae), a fish parasite in the Arctic and Pacific Northwest.
J Helminthol
January 2025
Center of Parasitology of A.N. Severtsov Institute of Ecology and Evolution of the Russian Academy of Sciences, Leninskii Prospect 33, 117071, Moscow, Russia.
Studying complexes of cryptic or pseudocryptic species opens new horizons for the understanding of speciation processes, an important yet vague issue for the digeneans. We investigated a hemiuroidean trematode across a wide geographic range including the northern European seas (White, Barents, and Pechora), East Siberian Sea, and the Pacific Northwest (Sea of Okhotsk and Sea of Japan). The goals were to explore the genetic diversity within through mitochondrial ( and genes) and ribosomal (ITS1, ITS2, 28S rDNA) marker sequences, to study morphometry of maritae, and to revise the life cycle data.
View Article and Find Full Text PDFThe dynamics of initiation in caregiver-child conversational interactions.
J Child Lang
January 2025
Center for Data Science in Humanities, Institute of Humanities, Chosun University, Gwangju, Korea.
We investigated the dynamics of communicative initiation in infant-caregiver interactions across ages and language abilities. Analyses of 228 Language ENvironment Analysis (LENA) recordings from 141 Korean adult-child dyads (60 girls; aged 7-30 months) replicated the initiator effect reported in North American populations. This effect, demonstrated by longer utterances, more frequent speech, and shorter response times in self-initiated interactions for both children and adults, suggests potential cross-cultural consistency in this conversational dynamic and remained consistent across ages in most conversational measures.
View Article and Find Full Text PDFPredictive value of peripheral blood indicators plus procalcitonin clearance rate for mortality in cancer patients with sepsis.
Am J Cancer Res
December 2024
Department of Critical Care Medicine, South China Hospital of Shenzhen University Shenzhen 518100, Guangdong, PR China.
This study investigated the predictive value of combining peripheral blood indicators with procalcitonin clearance rate (PCTc) to assess mortality risk in cancer patients with sepsis, aiming to develop a more sensitive and specific clinical tool. A retrospective analysis was conducted on 393 cancer patients with sepsis admitted to South China Hospital of Shenzhen University from January 2019 to January 2024. Collected data included clinical demographics, laboratory indicators such as white blood cell count, neutrophil count (NEUT), platelet count (PLT), lymphocyte count (LYC), C-reactive protein, procalcitonin (PCT), alanine aminotransferase, and the ratio of arterial oxygen partial pressure to inspired oxygen fraction, as well as functional scores like Acute Physiology and Chronic Health Evaluation II (APACHE II) and Sequential Organ Failure Assessment.
View Article and Find Full Text PDFNRP1 overexpression potentially enhances osimertinib resistance in NSCLC via activation of the PI3K/AKT signaling pathway.
Am J Cancer Res
December 2024
Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Soochow University Suzhou 215006, Jiangsu, China.
Resistance to epidermal growth factor receptor tyrosine kinase inhibitors (EGFR-TKIs) is the main cause of mortality in lung cancer. This study aimed to investigate the roles of neuropilin 1 (NRP1) in non-small cell lung cancer (NSCLC). NRP1 expression was assessed in tumor tissues from patients with osimertinib-resistant (OR) NSCLC and osimertinib-responsive NSCLC as well as in patients with paracancerous NSCLC tissues who did not undergo radiotherapy or chemotherapy.
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