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- W4317889743 abstract "ABSTRACT Childhood traumatic stress profoundly affects prefrontal cortical networks regulating top-down control of eating and body weight. However, the neurobiological mechanisms contributing to trauma-induced aberrant eating behaviors remain largely unknown. Traumatic stress influences brain immune responses, which may, in turn, disrupt prefrontal cortical networks and behaviors. The tumor necrosis factor alpha-converting enzyme / a disintegrin and metalloproteinase 17 (TACE/ADAM17) is a sheddase with essential functions in brain maturation, behavior, and neuroinflammation. This study aimed to determine the role of TACE/ADAM17 on traumatic stress-induced disruption of eating patterns. We demonstrate a novel mechanistic connection between prefrontal cortical TACE/ADAM17 and trauma-induced eating behaviors. Fifty-two (52) adolescent Lewis rats (postnatal day, PND, 15) were injected intracerebrally either with a novel Accell™ SMARTpool ADAM17 siRNA or a corresponding siRNA vehicle. The RNAscope Multiplex Fluorescent v2 Assay was used to visualize mRNA expression. Observation cages were used to monitor ethological behaviors in a more naturalistic environment over long periods. We found that traumatic stress blunts startle reactivity and alter eating behaviors (increased intake and disrupted eating patterns). We also found that the rats that received prefrontal cortical TACE/ADAM17 siRNA administration exhibited decreased eating and increased grooming behaviors compared to controls. These changes were associated with decreased AIF-1 expression (a typical marker of microglia and neuroinflammation). This study demonstrates that prefrontal cortical TACE/ADAM17 is involved in neuroinflammation and may play essential roles in regulating feeding patterns under stress conditions. TACE/ADAM17 represents a promising target to ameliorate inflammation-induced brain and behavior alterations." @default.
- W4317889743 created "2023-01-25" @default.
- W4317889743 creator A5025213394 @default.
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- W4317889743 creator A5051098100 @default.
- W4317889743 creator A5054590907 @default.
- W4317889743 creator A5084075868 @default.
- W4317889743 date "2023-01-24" @default.
- W4317889743 modified "2023-09-30" @default.
- W4317889743 title "Prefrontal cortical protease TACE/ADAM17 is involved in neuroinflammation and stress-related eating alterations" @default.
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- W4317889743 doi "https://doi.org/10.1101/2023.01.23.525269" @default.
- W4317889743 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/36747666" @default.
- W4317889743 hasPublicationYear "2023" @default.
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