ArticleJournal of advanced research2023
Docosahexaenoic acid enhances hippocampal insulin sensitivity to promote cognitive function of aged rats on a high-fat diet.
Article in Journal of advanced research, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.
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Who cites it
15 citing papers in PubMed, 1 synthesis or guideline pooled it, 28 citations in OpenAlex.
- Nutritional supplements and cognition in healthy aging and mild cognitive impairment patients: a systematic review and network meta-analysis.The journal of prevention of Alzheimer's disease · 2026Pooled it
- Omega-3 Fatty Acids and Alzheimer's Disease: Toward a New Understanding of Neuroprotective Mechanisms and Intervention Strategies.Marine drugs · 2026Review
- The Liver-brain Axis: A Three-stage Model Linking MASLD to Cognitive Impairment and Dementia.Journal of molecular neuroscience : MN · 2026Review
- Marine Bioactive Substances in Precision Nutrient Delivery to the Gut and Advances in Microbiome Regulation: A Narrative Review.Foods (Basel, Switzerland) · 2026Review
- Hepatic HMGCS2-derived β-hydroxybutyrate attenuates hippocampal insulin resistance and neuroinflammation to promote MASLD-induced cognitive function.Communications biology · 2026Article
- Unlocking Parkinson's disease: harnessing the untapped potential of fatty acid metabolism in disease pathogenesis.Frontiers in immunology · 2026Review
- Healthy dietary patterns for prevention of neuropsychiatric disorders: role of inflammatory and metabolic mechanisms.NPJ science of food · 2025Article
- Docosahexaenoic acid ameliorates autistic-like behaviors by inhibiting oxidative stress and inflammatory response in neonatal maternal separation rats.Pediatric discovery · 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
- Oxidative Stress-mediated Loss of Hippocampal Parvalbumin Interneurons Contributes to Memory Precision Decline After Acute Sleep Deprivation.Molecular neurobiology · 2025Article
- Contact Cooling-Induced ELOVL4 Enhances Skin Wound Healing by Promoting the Inflammation-to-Proliferation Phase Transition.International journal of biological sciences · 2025Article
- Omega-3 polyunsaturated fatty acids in diabetic-associated cognitive dysfunction: a nutritional therapeutic perspective.Frontiers in nutrition · 2025Article
- Article
- Simultaneous DHA and organic selenium production by Schizochytrium sp.: a theoretical basis.Scientific reports · 2023Article
- Interdisciplinary Approaches to Deal with Alzheimer's Disease-From Bench to Bedside: What Feasible Options Do Already Exist Today?Biomedicines · 2022Review
Corrections and comments
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Authors and funding
10 authors at 5 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
introductionDiminished brain insulin sensitivity is associated with reduced cognitive function. Docosahexaenoic acid (DHA) is known to maintain normal brain function.
objectivesThis study aimed to determine whether DHA impacts hippocampal insulin sensitivity and cognitive function in aged rats fed a high-fat diet (HFD).
methodsEight-month-old female Sprague-Dawley rats were randomly divided into three groups (n = 50 each). Rats in the aged group, HFD group, and DHA treatment group received standard diet (10 kcal% fat), HFD (45 kcal% fat), and DHA-enriched HFD (45 kcal% fat, 1% DHA, W/W) for 10 months, respectively. Four-month-old female rats (n = 40) that received a standard diet served as young controls. Neuroinflammation, oxidative stress, amyloid formation, and tau phosphorylation in the hippocampus, as well as systemic glucose homeostasis and cognitive function, were tested.
resultsDHA treatment relieved a block in the insulin signaling pathway and consequently protected aged rats against HFD-induced hippocampal insulin resistance. The beneficial effects were explained by a DHA-induced decrease in systemic glucose homeostasis dysregulation, hippocampal neuroinflammation and oxidative stress. In addition, DHA treatment broke the reciprocal cycle of hippocampal insulin resistance, Aβ burden, and tau hyperphosphorylation. Importantly, treatment of model rats with DHA significantly increased their cognitive capacity, as evidenced by their increased hippocampal-dependent learning and memory, restored neuron morphology, enhanced cholinergic activity, and activated cyclic AMP-response element-binding protein.
conclusionDHA improves cognitive function by enhancing hippocampal insulin sensitivity.
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Registered trials
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