Publications by authors named "A N Boyden"

Background: Single-use anaesthetic drug trays are used widely in Australia, but their environmental impact is unclear.

Methods: A life cycle assessment was completed for 10 different types of single-use anaesthetic drug trays made of four materials: the synthetic plastics polypropylene and polystyrene, and the natural fibres bagasse (sugarcane pulp) and cellulose pulp.

Results: Carbon emissions per tray from total life cycle with landfill disposal were 33-454 g CO-eq, which equates to 152-2066 tonnes CO-eq annually.

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  • B cells play a crucial role in multiple sclerosis, highlighted by the effectiveness of therapies that deplete B cells, but their exact contribution to the disease is still not fully understood.
  • This study used a specific mouse model of autoimmune encephalomyelitis to show that depleting B cells reduces disease progression and T cell activation related to a myelin protein.
  • The researchers found that B cells are essential for presenting antigens to CD4 T cells, which is key in causing the disease, suggesting that understanding these interactions can help develop new treatments for autoimmune diseases.
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  • Intravascular perfusion with tissue fixatives is crucial in neuroscience to minimize artifacts during the handling of sensitive central nervous system tissues, with 10% NBF and 4% PFA commonly used.
  • The study compared the effects of these two fixatives on handling artifacts and neurodegenerative changes in mice with experimental autoimmune encephalitis (EAE), finding that NBF-perfused animals had fewer severe dark neuron artifacts than those perfused with PFA.
  • Results showed that while immersion fixation led to higher artifact scores, both NBF and PFA perfusion methods were equally effective for histopathological analysis in the EAE model.
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Multiple sclerosis (MS) is an immune-mediated demyelinating disease of the CNS. We have previously demonstrated that CNS-specific CD8 T cells possess a disease-suppressive function in MS and variations of its animal model, experimental autoimmune encephalomyelitis (EAE), including the highly clinically relevant relapsing-remitting EAE disease course. Regulatory CD8 T cell subsets have been identified in EAE and other autoimmune diseases, but studies vary in defining phenotypic properties of these cells.

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Investigating the complex cellular interplay controlling immunopathogenic and immunoregulatory responses is critical for understanding multiple sclerosis (MS) and for developing successful immunotherapies. Our group has demonstrated that CNS myelin-specific CD8 T cells unexpectedly harbor immune regulatory capacity in both mouse and human. In particular, PLP-specific CD8 T cells (PLP-CD8) robustly suppress the MS mouse model experimental autoimmune encephalomyelitis.

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