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      The role of endosymbiotic Wolbachia bacteria in the pathogenesis of river blindness.

      Science (New York, N.Y.)
      Animals, Anti-Bacterial Agents, pharmacology, therapeutic use, Brugia malayi, physiology, Cornea, immunology, metabolism, microbiology, parasitology, Dipetalonema, Doxycycline, Drosophila Proteins, Eosinophils, Humans, Immunity, Innate, Keratitis, pathology, Membrane Glycoproteins, genetics, Mice, Mice, Inbred C3H, Mice, Inbred C57BL, Microscopy, Confocal, Neutrophil Infiltration, Neutrophils, Onchocerca volvulus, Onchocerciasis, Ocular, Receptors, Cell Surface, Symbiosis, Toll-Like Receptor 4, Toll-Like Receptors, Wolbachia, pathogenicity

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          Abstract

          Parasitic filarial nematodes infect more than 200 million individuals worldwide, causing debilitating inflammatory diseases such as river blindness and lymphatic filariasis. Using a murine model for river blindness in which soluble extracts of filarial nematodes were injected into the corneal stroma, we demonstrated that the predominant inflammatory response in the cornea was due to species of endosymbiotic Wolbachia bacteria. In addition, the inflammatory response induced by these bacteria was dependent on expression of functional Toll-like receptor 4 (TLR4) on host cells.

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