Publications by authors named "T G Orr"

How mammalian herbivores evolve to feed on chemically defended plants remains poorly understood. In this study, we investigated the adaptation of two species of woodrats ( and ) to creosote bush (), a toxic shrub that expanded across the southwestern United States after the Last Glacial Maximum. We found that creosote-adapted woodrats have elevated gene dosage across multiple biotransformation enzyme families.

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Introduction: Alzheimer's disease (AD), primary age-related tauopathy (PART), and chronic traumatic encephalopathy (CTE) all feature hyperphosphorylated tau (p-tau)-immunoreactive neurofibrillary degeneration, but differ in neuroanatomical distribution and progression of neurofibrillary degeneration and amyloid beta (Aβ) deposition.

Methods: We used Nanostring GeoMx Digital Spatial Profiling to compare the expression of 70 proteins in neurofibrillary tangle (NFT)-bearing and non-NFT-bearing neurons in hippocampal CA1, CA2, and CA4 subregions and entorhinal cortex of cases with autopsy-confirmed AD (n = 8), PART (n = 7), and CTE (n = 5).

Results: There were numerous subregion-specific differences related to Aβ processing, autophagy/proteostasis, inflammation, gliosis, oxidative stress, neuronal/synaptic integrity, and p-tau epitopes among these different disorders.

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Article Synopsis
  • Length of stay (LOS) in healthcare is important, as longer stays can lead to more complications; this study focuses on factors related to extended LOS (eLOS) in children and young adults after craniotomy for tumor removal.
  • Over 1,200 patients were analyzed, finding that those with eLOS (more than 7 days) tended to be younger, experienced longer ICU stays, and had specific tumor types and surgical conditions linked to eLOS.
  • The study provides insights beneficial for preoperative discussions, preparation by neurosurgical teams, and improving healthcare delivery by identifying factors that influence LOS in pediatric patients undergoing these procedures.
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Decades of research have made clear that host-associated microbiomes touch all facets of health. However, effective therapies that target the microbiome have been elusive given its inherent complexity. Here, we experimentally examined diet-microbe-host interactions through a complex systems framework, centered on dietary oxalate.

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