Role of Nuclear Receptor on Regulation of BDNF and Neuroinflammation in Hippocampus of β-Amyloid Animal Model of Alzheimer’s Disease
Abstract
Peroxisome proliferator-activated receptor-γ (PPAR-γ) agonists have been reported to provide neuroprotective effects against neurodegenerative diseases. The current study was carried out to investigate the effects of chronic administration of pioglitazone, a PPAR-γ agonist, on cognitive impairment in an animal model of Alzheimer's disease induced by β-amyloid. Wistar rats received intracerebroventricular (ICV) β-amyloid (βA) application (3 nmol/3 μL), and behavioral alterations (locomotor activity and memory performance) were assessed. Animals were sacrificed immediately following the last behavioral session, and their brains were removed and dissected. Mitochondrial enzymes, oxidative parameters, inflammatory mediators (TNF-α, IL-6), caspase activity, and BDNF levels were measured in the hippocampus. ICV βA-treated rats showed a memory deficit and significantly decreased BDNF level, simultaneously, increase in mitochondrial oxidative damage and inflammatory mediators in the hippocampus. Memory impairment and oxidative damage were reversed by administration of pioglitazone (15 and 30 mg/kg). Pioglitazone also significantly restored the BDNF level and attenuated the actions of inflammatory markers in ICV βA-treated rats. However, pretreatment with PPAR-γ antagonist BADGE (15 mg/kg) with higher dose of pioglitazone significantly reversed its protective action in memory impairment in βA-treated rats, which indicates the involvement of PPAR-γ receptors mediating neuroprotective action. These results demonstrate that pioglitazone offers protection against β-amyloid-induced memory dysfunction possibly due to its antioxidant, anti-inflammatory, anti-apoptotic action and neurogenesis-like effect therefore, could have a therapeutic potential in Alzheimer's disease.
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In rats injected with Aβ in the hippocampus, BDNF decreases and TNF-α, IL-6, and caspase-3 protein levels increase 3 weeks after intracerebroventricular injection.
“Prakash shows that rats injected with Aβ in the hippocampus have a remarkable decrease in BDNF and increased TNF-α, IL-6, and caspase-3 protein levels 3 weeks after intracerebroventricular injection.”
From Brain-Derived Neurotrophic Factor in Brain Disorders: Focus on Neuroinflammation (2019) · cites this paper as [154]
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Brain-Derived Neurotrophic Factor in Brain Disorders: Focus on Neuroinflammation
Lima Giacobbo, B., Doorduin, J., Klein, H. C., Dierckx, R. A. J. O., Bromberg, E., & de Vries, E. F. J. (2019) · Molecular Neurobiology · doi:10.1007/s12035-018-1283-6 · Cited by 750 · see citing works
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Molecular mechanisms of brain-derived neurotrophic factor in neuro-protection: Recent developments
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- Authors
- Prakash, A., & Kumar, A.
- Affiliations
- Panjab University (IN)
- Corresponding author
- Prakash, Atish
- Venue
- Neurotoxicity Research
- Published
- 2013-11-26
- Volume
- 25
- Issue
- 4
- Pages
- 335-347
- ISSN
- 1029-8428 (ISSN-L)
- 1476-3524
- OpenAlex
- W2010156024
- Cited by
- 98
- References
- 58
- Citations by year
- 2026: 6 · 2025: 5 · 2024: 9 · 2023: 7 · 2022: 7 · 2021: 10 · 2020: 13 · 2019: 10 · 2018: 8 · 2017: 10 · 2016: 3 · 2015: 9 · 2014: 1
- FWCI
- 3.01
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- www.springer.com/tdm (tdm)
- Locations
- Neurotoxicity Research (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Indian Council of Medical Research
- Topics
- Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Peroxisome Proliferator-Activated Receptors
- Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
- Keywords
- Alzheimer's disease, amyloid-beta, pioglitazone, PPARγ agonists, brain-derived neurotrophic factor, neuroinflammation, hippocampus, memory impairment, oxidative stress, mitochondrial dysfunction, TNF-α, interleukin-6, caspase activity, badges, neuroprotection, neurogenesis
- MeSH terms
- Pioglitazone, Alzheimer Disease, Animals, Cognition Disorders, Disease Models, Animal, Hippocampus, Memory Disorders, Motor Activity, Peptide Fragments, Space Perception, Time Factors, Amyloid beta-Peptides, Treatment Outcome, Rats, Wistar, Neuroprotective Agents, Maze Learning, Brain-Derived Neurotrophic Factor, Thiazolidinediones, PPAR gamma
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