ArticlePloS one2021
Long-term diet-induced obesity does not lead to learning and memory impairment in adult mice.
Article in PloS one, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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Who cites it
14 citing papers in PubMed, 34 citations in OpenAlex.
- Diet-Driven Microglial Activation: Region-Specific Neuroinflammation in the Mouse Brain.Brain sciences · 2025Article
- Adolescent nutritional influences on the brain: implications for eating behaviors.Neuropharmacology · 2025Review
- Exploring the Impact of a High-Fat Diet on Brain Homeostasis: A Comprehensive Analysis of the Absence of Inflammation.Molecular nutrition & food research · 2025Article
- Tryptophan-Rich Diet Improves High-Fat Diet-Induced Cognitive Dysfunction and Blood-Brain Barrier Disruption in C57BL/6 Mice through FFAR3 Activation.Journal of agricultural and food chemistry · 2025Article
- Sex-dependent effects of a high-fat diet on the hypothalamic response in mice.Biology of sex differences · 2025Article
- Nitric oxide donors rescue metabolic and mitochondrial dysfunction in obese Alzheimer's model.Scientific reports · 2024Article
- Sex-dependent effects of carbohydrate source and quantity on caspase-1 activity in the mouse central nervous system.Journal of neuroinflammation · 2024Article
- Sex differences in response to obesity and caloric restriction on cognition and hippocampal measures of autophagic-lysosomal transcripts and signaling pathways.BMC neuroscience · 2024Article
- High-fat diet feeding triggers a regenerative response in the adult zebrafish brain.Molecular neurobiology · 2023Article
- Long-Term High-Fat Diet Decreases Renal Insulin-Degrading Enzyme Expression and Function by Inhibiting the PPARγ Pathway.Molecular nutrition & food research · 2023Article
- Feeding the Brain: Effect of Nutrients on Cognition, Synaptic Function, and AMPA Receptors.Nutrients · 2022Review
- Overnutrition Induced Cognitive Impairment: Insulin Resistance, Gut-Brain Axis, and Neuroinflammation.Frontiers in neuroscience · 2022Review
- The Obese Brain: Mechanisms of Systemic and Local Inflammation, and Interventions to Reverse the Cognitive Deficit.Frontiers in integrative neuroscience · 2022Review
- Plant Sterol-Poor Diet Is Associated with Pro-Inflammatory Lipid Mediators in the Murine Brain.International journal of molecular sciences · 2021Article
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Authors and funding
6 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Obesity arising from excessive dietary fat intake is a risk factor for cognitive decline, dementia and neurodegenerative diseases, including Alzheimer's disease. Here, we studied the effect of long-term high-fat diet (HFD) (24 weeks) and return to normal diet (ND) on behavioral features, microglia and neurons in adult male C57BL/6J mice. Consequences of HFD-induced obesity and dietary changes on general health (coat appearance, presence of vibrissae), sensory and motor reflexes, learning and memory were assessed by applying a phenotypic assessment protocol, the Y maze and Morris Water Maze test. Neurons and microglia were histologically analyzed within the mediobasal hypothalamus, hippocampus and frontal motor cortex after long-term HFD and change of diet. Long periods of HFD caused general health issues (coat alterations, loss of vibrissae), but did not affect sensory and motor reflexes, emotional state, memory and learning. Long-term HFD increased the microglial response (increased Iba1 fluorescence intensity, percentage of Iba1-stained area and Iba1 gene expression) within the hypothalamus, but not in the cortex and hippocampus. In neither of these regions, neurodegeneration or intracellular lipid droplet accumulation was observed. The former alterations were reversible in mice whose diet was changed from HFD to ND. Taken together, long periods of excessive dietary fat alone do not cause learning deficits or spatial memory impairment, though HFD-induced obesity may have detrimental consequences for cognitive flexibility. Our data confirm the selective responsiveness of hypothalamic microglia to HFD.
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