Cited by 34Alzheimer's disease research and treatmentsNeuroinflammation and Neurodegeneration MechanismsCholesterol and Lipid Metabolism

Influential role of 7-Ketocholesterol in the progression of Alzheimer’s disease

Mahalakshmi, K., Parimalanandhini, D., Sangeetha, R., Livya Catherene, M., Beulaja, M., Thiagarajan, R., Arumugam, M., Janarthanan, S. +1 more·2021·Prostaglandins & Other Lipid Mediators

Abstract

Millions of people are affected by neurodegenerative diseases worldwide. They occur due to the loss of brain functions or peripheral nervous system dysfunction. If untreated, prolonged condition ultimately leads to death. Mostly they are associated with stress, altered cholesterol metabolism, inflammation and organelle dysfunction. Endogenous cholesterol and phospholipids in brain undergo auto-oxidation by enzymatic as well as non-enzymatic modes leading to the formation of by-products such as 4-hydroxynonenal and oxysterols. Among various oxysterols, 7-ketocholesterol (7KCh) is one of the major toxic components involved in altering neuronal lipid metabolism, contributing to inflammation and nerve cell damage. More evidently 7KCh is proven to induce oxidative stress and affects membrane permeability. Loss in mitochondrial membrane potential affects metabolism of cell organelles such as lysosomes and peroxisomes which are involved in lipid and protein homeostasis. This in turn could affect amyloidogenesis, tau protein phosphorylation and accumulation in pathological conditions of neurodegenerative diseases. Lipid alterations and the consequent pathogenic protein accumulation, results in the damage of cell organelles and microglial cells. This could be a reason behind disease progression and predominantly reported characteristics of neurodegenerative disorders such as Alzheimer's disease. This review focuses on the role of 7KCh mediated neurodegenerative Alzheimer's disease with…

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Crossref · 10.1016/j.prostaglandins.2021.106582

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123 of 123 references verified0 citation errors · 0 not checkable

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Authors
Mahalakshmi, K., Parimalanandhini, D., Sangeetha, R., Livya Catherene, M., Beulaja, M., Thiagarajan, R., Arumugam, M., Janarthanan, S., & Manikandan, R.
Affiliations
  • University of Madras (IN)
  • Ramakrishna Mission Vivekananda College (IN)
Corresponding author
Manikandan, R.
Venue
Prostaglandins & Other Lipid Mediators
Publisher
Elsevier BV
Published
2021-10
Volume
156
Pages
106582
ISSN
1098-8823 (ISSN-L)
OpenAlex
W3184215656
Cited by
32
References
125
Citations by year
2026: 5 · 2025: 6 · 2024: 6 · 2023: 8 · 2022: 7
FWCI
0.70
Type
journal article
Language
en
Open access
closed
Locations
  • Prostaglandins & Other Lipid Mediators (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Health Sciences › Medicine › Surgery › Cholesterol and Lipid Metabolism
Keywords
7-ketocholesterol, Alzheimer's disease, oxysterols, neurodegeneration, cholesterol metabolism, lipid rafts, oxidative stress, mitochondrial dysfunction, amyloidogenesis, tau phosphorylation, neuroinflammation, microglia, neuroprotection
MeSH terms
Alzheimer Disease, Animals, Humans, Ketocholesterols, Oxidative Stress, Disease Progression

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