Publications by authors named "Stephen Gironda"

Unlabelled: Early life stress (ELS) has lasting consequences on microglia and brain macrophage function. During ELS, microglia and brain macrophages alter their engagement with synapses leading to changes in neuronal excitability. Further, ELS can induce innate immune memory formation in microglia and brain macrophages resulting in altered responsivity to future environmental stimuli.

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  • Brain-derived extracellular vesicles (EVs) are key players in Alzheimer's disease, acting as potential biomarkers due to the protection of their internal cargo from degradation.
  • * A new method was developed to collect EVs from the hippocampal interstitial fluid of live mice, with specific techniques used for isolation and characterization.
  • * Findings indicate that, in a model of Alzheimer’s, the protein concentration in EVs increases while protein diversity decreases with amyloid-beta deposition, and notable differences were observed based on sex regarding microglial EV proteome.
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Article Synopsis
  • Brain-derived extracellular vesicles (EVs) are important in Alzheimer's disease (AD) as they contain physiological information about brain regions and could serve as AD biomarkers due to their stability in circulation.
  • A new method was developed to collect these EVs from the hippocampal interstitial fluid of live mice, revealing specific characteristics and size dimensions alongside conducting proteomic analyses.
  • In a mouse model of cerebral amyloidosis, findings indicated that while protein concentration in EVs increased with amyloid plaque deposition, the diversity of proteins decreased, and that these changes varied based on genotype, age, and sex, highlighting different microglial responses in female mice.
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Epidemiological studies identified alcohol use disorder (AUD) as a risk factor for Alzheimer's disease (AD), yet there is conflicting evidence on how alcohol use promotes AD pathology. In this study, a 10-week moderate two-bottle choice drinking paradigm was used to identify how chronic ethanol exposure alters amyloid-β (Aβ)-related pathology, metabolism, and behavior. Ethanol-exposed APPswe/PSEN1dE9 (APP/PS1) mice showed increased brain atrophy and an increased number of amyloid plaques.

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The aggressive nature and metastatic potential of pancreatic cancer (PC) results in poor prognosis and high mortality. A better understanding of the underlying biology of PC and the ability of tumor cells to spread to distant sites is needed to advance the treatment of PC. The chemokine receptor CXCR4 has been heavily implicated in the spread and mobility of many solid cancers based on its role in cancer cell chemotaxis as well as increased metastatic potential.

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The putative effects of early-life stress (ELS) on later behavior and neurobiology have been widely investigated. Recently, microglia have been implicated in mediating some of the effects of ELS on behavior. In this review, findings from preclinical and clinical literature with a specific focus on microglial alterations induced by the exposure to ELS (i.

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Obesity is associated with an increased risk of depression and anxiety disorders, but the nature of the relationship(s) between obesity and mental illness remains highly controversial. Some argue that depression and anxiety lead to increased consumption of "comfort foods," the intake of which reduces negative affect and promotes obesity. In contrast, others have theorized that negative affect results from chronic excessive consumption of highly palatable foods.

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