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Polyunsaturated fatty acids stimulate immunity and eicosanoid production in Drosophila melanogaster.
J Lipid Res
September 2024
Department of Nematology, University of California, Riverside, CA, USA. Electronic address:
Eicosanoids are a class of molecules derived from C20 polyunsaturated fatty acids (PUFAs) that play a vital role in mammalian and insect biological systems, including development, reproduction, and immunity. Recent research has shown that insects have significant but lower levels of C20 PUFAs in circulation in comparison to C18 PUFAs. It has been previously hypothesized in insects that eicosanoids are synthesized from C18 precursors, such as linoleic acid (LA), to produce downstream eicosanoids.
View Article and Find Full Text PDFProcedures to Measure Dictyostelium Phagocytosis and Macropinocytosis.
Methods Mol Biol
July 2024
Biological Sciences, Biomolecular Sciences Institute, Florida International University, Miami, FL, USA.
Uptaking particulate objects and bulk liquid by eucaryotic cells is critical for their growth, survival, and defense. Dictyostelium is a model organism spearheaded to uncover mechanisms behind various types of uptaking activities. Here, we describe assays measuring phagocytosis and macropinocytosis using Dictyostelium discoideum.
View Article and Find Full Text PDFGranulocyte dynamics: a key player in the immune priming effects of crickets.
Front Immunol
June 2024
Department of Plant Medicine, College of Agriculture and Life Science, Kangwon National University, Chuncheon, Republic of Korea.
This study investigates immune priming effects associated with granulocytes in crickets through a comprehensive analysis. Kaplan-Meier survival analysis reveals a significant contrast in survival rates, with the heat-killed ()-primed group exhibiting an impressive ~80% survival rate compared to the PBS buffer-primed group with only ~10% survival 60 hours post live infection. Hemocyte analysis underscores elevated hemocyte counts, particularly in granulocytes of the killed -primed group, suggesting a correlation between the heat-killed priming and heightened immune activation.
View Article and Find Full Text PDFProbiotics are widely used in food for their health benefits to the host. Inactivated probiotics also reportedly improve the intestinal environment and immune regulation. Our previous studies showed that heat-killed MCC1849 (hk-MCC1849) effectively induced IL-12 production in mouse spleen cells and significantly reduced cold symptoms in clinical trial subjects.
View Article and Find Full Text PDFModulating effects of heat-killed and live PSC102 on the immune response and gut microbiota of cyclophosphamide-treated rats.
Vet Q
December 2024
Laboratory of Veterinary Pharmacokinetics and Pharmacodynamics, Institute for Veterinary Biomedical Science, College of Veterinary Medicine, Kyungpook National University, Daegu, South Korea.
In the present study, we investigated the potential immunomodulatory effects of heat-killed (hLR) and live PSC102 (LR; formerly PSC102) in RAW264.7 macrophage cells and Sprague-Dawley rats. RAW264.
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