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February 5, 2026MetabolitesOpen Access

Synergistic Effects of Obesity and Hyperglycemia on Hippocampal Neurodegenerative Decline Disrupt the Neural Circuitry Regulating Motivation in Zucker Diabetic Fatty Rats

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Authors

MIMartha Patricia Islas-IslasAutonomous University of TlaxcalaACAleida Monserrat Coss-OrozcoBenemérita Universidad Autónoma de PueblaDMDiana Moroni-GonzálezAutonomous University of Tlaxcala

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Implication

Demonstrates that obesity and hyperglycemia impair recognition memory in Zucker diabetic fatty rats, suggesting critical metabolic-cognitive links.

Key Points

  • This research investigates the effects of obesity and hyperglycemia on cognitive decline and neuronal health in Zucker Diabetic Fatty rats.
  • Categorized male Zucker Diabetic Fatty rats into three groups based on obesity and glycemic status.
  • Conducted assessments of weight, glucose tolerance, and behavioral tests.
  • Evaluated hippocampal health through neuronal density analysis and redox markers.
  • Obesity and hyperglycemia resulted in significant visceral fat and increased hyperlipidemia.
  • ZDF-HG rats displayed glucose intolerance and reduced β-cell function.
  • Obesity decreased motor activity and memory impairment was worsened by hyperglycemia.
  • Reduced neuronal density was found in hippocampal regions associated with memory.

Cite This Study

Islas-Islas et al. (2026) studied this question.

synapsesocial.com/papers/69843543f1d9ada3c1fb3dabhttps://doi.org/10.3390/metabo16020107
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