Publications by authors named "D C Hood"

Mitochondria are metabolic hubs that govern skeletal muscle health. While exercise has been established as a powerful inducer of quality control processes that ultimately enhance mitochondrial function, there are currently limited pharmaceutical interventions available that emulate exercise-induced mitochondrial adaptations. To investigate a novel candidate for this role, we examined Sulforaphane (SFN), a naturally occurring compound found in cruciferous vegetables.

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Purpose: To develop and test a novel optical coherence tomography (OCT) metric for the detection of glaucoma based on a logistic regression model (LRM) and known patterns of glaucomatous damage.

Methods: The six variables of the LRM were based on characteristic patterns of damage seen on the OCT thickness maps of the ganglion cell layer plus inner plexiform layer (GCL+) and retinal nerve fiber layer (RNFL). Two cohorts were used to develop the LRM.

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Efficient signal transduction that mediates mitochondrial turnover is a strong determinant of metabolic health in skeletal muscle. Of these pathways, our focus was aimed towards the enhancement of antioxidant capacity, mitophagy, and mitochondrial biogenesis. While physical activity is an excellent inducer of mitochondrial turnover, its ability to ubiquitously activate and enhance mitochondrial turnover prevents definitive differentiation of the contribution made by each pathway.

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Aims: Most type 2 diabetes (T2D) studies have predominantly enrolled White people aged <65 years. This retrospective study evaluated outcomes for iGlarLixi (fixed-ratio combination [FRC] of insulin glargine 100 U/mL and lixisenatide) versus basal-bolus or premixed insulin in African American, Asian and Hispanic adults with T2D aged ≥65 years.

Methods: Medicare claims data were assessed from beneficiaries receiving basal insulin who newly initiated iGlarLixi, basal-bolus insulin, or premixed insulin between 7/1/2019 and 12/30/2021.

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Article Synopsis
  • Skeletal muscle relies on mitochondria for energy and metabolic flexibility, with mitochondrial quality control processes, including the integrated stress response (ISR), playing a crucial role in managing cellular stress.
  • In a study using mice, researchers stimulated muscle contractions and found that ISR was activated after exercise, shown by increased levels of specific proteins and genes associated with stress response, like ATF4 and CHOP.
  • The increase in ATF4 mRNA stability after exercise was linked to the RNA binding protein HuR, suggesting that acute exercise can induce mitochondrial stress and potentially lead to adaptations in muscle over time.
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