Cited by 29Neuroscience and Neuropharmacology ResearchMemory and Neural MechanismsAir Quality and Health Impacts

Effect of ozone exposure on dendritic spines of CA1 pyramidal neurons of the dorsal hippocampus and on object-place recognition memory in rats

Bello-Medina, P.C., Prado-Alcalá, R.A., Rivas-Arancibia, S.·2019·Neuroscience

Abstract

The growth of many cities has generated an increase in the emission of environmental pollutants. Exposure to these pollutants has been associated with increased mortality worldwide. These pollutants, such as ozone, produce reactive oxygen species (ROS), which cause oxidative stress throughout the body. It has been observed that there is a relationship between chronic oxidative stress and the development of degenerative diseases typical of old age such as amyotrophic lateral sclerosis, Parkinson's disease, Alzheimer's disease, and Huntington's disease. The purpose of this research was to evaluate whether chronic exposure to ozone produces a deleterious effect on density and morphology of dendritic spines in CA1 of dorsal hippocampus and on learning and memory of object-place recognition. Rats were exposed to ozone or to ozone-free air for a period of 15, 30, 60, or 90 days. The principal results indicate that chronic oxidative stress induced by ozone produces a decrease in the density of dendritic spines, a decrease in thin and mushroom spine ratios, and an increase in stubby spine ratio, as well as a deficit in learning and memory of the object-place recognition task. These results indicate that chronic ozone exposure produces a loss in the inputs of CA1 neurons of the dorsal hippocampus, which may be the source of the cognitive deficits observed in the object-place recognition task, as indicated by the decrease in density of dendritic spines; these alterations are similar to those reported in some neurodegenerative diseases such as Alzheimer's disease.

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Crossref · 10.1016/j.neuroscience.2019.01.018

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  • Rats chronically exposed to ozone exhibited deficits in learning and memory loss associated with deafferentation in hippocampus-related neurons.

    “Bello-Medina et al. found that rats chronically exposed to ozone exhibited deficits in learning and memory loss associated with deafferentation in hippocampus-related neurons (69).”

    From Ozone pollution: A Major health hazard worldwide (2019) · cites this paper as [69]

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Authors
Bello-Medina, P. C., Prado-Alcalá, R. A., & Rivas-Arancibia, S.
Affiliations
Universidad Nacional Autónoma de México (MX)
Corresponding author
  • Prado-Alcalá, R.A.
  • Rivas-Arancibia, S.
Venue
Neuroscience
Publisher
Elsevier BV
Published
2019-03
Volume
402
Pages
1-10
ISSN
0306-4522 (ISSN-L)
OpenAlex
W2912306958
Cited by
29
References
64
Citations by year
2026: 1 · 2025: 6 · 2024: 5 · 2023: 1 · 2022: 9 · 2021: 4 · 2020: 2 · 2019: 1
FWCI
1.91
Type
journal article
Language
en
Open access
closed
Locations
  • Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Universidad Nacional Autónoma de México (IN221417)
  • Consejo Nacional de Ciencia y Tecnología (219703)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Air Quality and Health Impacts
Keywords
ozone exposure, dendritic spines, CA1 pyramidal neurons, dorsal hippocampus, oxidative stress, reactive oxygen species, cognitive impairment, dendritic spine morphology, Alzheimer's disease, neurodegeneration
MeSH terms
Animals, Male, Ozone, Rats, Wistar, Pyramidal Cells, Oxidative Stress, Recognition, Psychology, Dendritic Spines, CA1 Region, Hippocampal

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