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Unlabelled: Understanding how cells control their biophysical properties during development remains a fundamental challenge. While cytoplasmic macromolecular crowding affects multiple cellular processes in single cells, its regulation in living animals remains poorly understood. Using genetically encoded multimeric nanoparticles for rheology, we discovered that tissues maintain distinct cytoplasmic biophysical properties that differ from those observed across diverse systems, including bacteria, yeast species, and cultured mammalian cells.
View Article and Find Full Text PDFExcipient lung disease with transient severe pulmonary hypertension in a healthcare professional injecting crushed oxycodone tablets.
BMJ Case Rep
January 2025
Department of Respiratory Medicine, Alfred Health, Melbourne, Victoria, Australia
Excipient lung disease (ELD) is a rare cause of pulmonary hypertension that occurs due to the intravenous injection of crushed tablets. We present the case of a healthcare professional in her late 30s who presented with a fever in the setting of a bacteraemia. During her hospital admission, she established a pattern of transient hypoxia and hypotension, with resolution without targeted management or clear cause identified.
View Article and Find Full Text PDFProtists as mediators of complex microbial and viral associations.
bioRxiv
December 2024
DOE Joint Genome Institute, Berkeley, California, USA.
Microbial eukaryotes (aka protists) are known for their important roles in nutrient cycling across different ecosystems. However, the composition and function of protist-associated microbiomes remains largely elusive. Here, we employ cultivation-independent single-cell isolation and genome-resolved metagenomics to provide detailed insights into underexplored microbiomes and viromes of over 100 currently uncultivable ciliates and amoebae isolated from diverse environments.
View Article and Find Full Text PDFMagnetotactic bacteria from diverse Pseudomonadota families biomineralize intracellular Ca-carbonate.
ISME J
January 2025
Université Aix-Marseille, CNRS, CEA, UMR7265 Institut de Biosciences and Biotechnologies d'Aix-Marseille, CEA Cadarache, F-13108 Saint-Paul-lez-Durance, France.
Intracellular calcium carbonate formation has long been associated with a single genus of giant Gammaproteobacteria, Achromatium. However, this biomineralization has recently received increasing attention after being observed in photosynthetic Cyanobacteriota and in two families of magnetotactic bacteria affiliated with the Alphaproteobacteria. In the latter group, bacteria form not only intracellular amorphous calcium carbonates into large inclusions that are refringent under the light microscope, but also intracellular ferrimagnetic crystals into organelles called magnetosomes.
View Article and Find Full Text PDFLow Reproductivity of Giant Pandas May Be Associated with Increased Vaginal .
Microorganisms
December 2024
Sichuan Key Laboratory of Conservation Biology for Endangered Wildlife, Chengdu Research Base of Giant Panda Breeding, Chengdu 610081, China.
The poor reproductive capacity of giant pandas significantly hinders the development of captive populations, with 80.88% of adult individuals being unable to successfully become pregnant and deliver offspring. The disturbance of vaginal microbiota has been proven to potentially lead to miscarriage, abortion, and stillbirth in mammals.
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