Cited by 299Neurogenesis and neuroplasticity mechanismsNeuroinflammation and Neurodegeneration MechanismsTryptophan and brain disorders

Chronic peripheral inflammation, hippocampal neurogenesis, and behavior

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Chesnokova, Vera, Pechnick, Robert N., Wawrowsky, Kolja·2016·Brain, Behavior, and Immunity

Abstract

Adult hippocampal neurogenesis is involved in memory and learning, and disrupted neurogenesis is implicated in cognitive impairment and mood disorders, including anxiety and depression. Some long-term peripheral illnesses and metabolic disorders, as well as normal aging, create a state of chronic peripheral inflammation. These conditions are associated with behavioral disturbances linked to disrupted adult hippocampal neurogenesis, such as cognitive impairment, deficits in learning and memory, and depression and anxiety. Pro-inflammatory cytokines released in the periphery are involved in peripheral immune system-to-brain communication by activating resident microglia in the brain. Activated microglia reduce neurogenesis by suppressing neuronal stem cell proliferation, increasing apoptosis of neuronal progenitor cells, and decreasing survival of newly developing neurons and their integration into existing neuronal circuits. In this review, we summarize evolving evidence that the state of chronic peripheral inflammation reduces adult hippocampal neurogenesis, which, in turn, produces the behavioral disturbances observed in chronic inflammatory disorders. As there are no data available on neurogenesis in humans with chronic peripheral inflammatory disease, we focus on animal models and, in parallel, consider the evidence of cognitive disturbance and mood disorders in human patients.

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Authors
Chesnokova, V., Pechnick, R. N., & Wawrowsky, K.
Affiliations
  • Cedars-Sinai Medical Center (US)
  • Western University of Health Sciences (US)
Corresponding author
Chesnokova, Vera
Venue
Brain, Behavior, and Immunity
Publisher
Elsevier BV
Published
2016-11
Volume
58
Pages
1-8
ISSN
0889-1591 (ISSN-L)
OpenAlex
W2275191480
Cited by
299
References
101
Citations by year
2026: 34 · 2025: 48 · 2024: 24 · 2023: 37 · 2022: 29 · 2021: 36 · 2020: 25 · 2019: 22 · 2018: 17 · 2017: 17 · 2016: 9
FWCI
2.69
Type
journal article
Language
en
Open access
Locations
  • Brain Behavior and Immunity (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • NIH (MH79988)
  • NARSAD Independent Investigator Award
Topics
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Life Sciences › Neuroscience › Biological Psychiatry › Tryptophan and brain disorders
Keywords
adult hippocampal neurogenesis, hippocampal neurogenesis, inflammatory cytokines, microglia, neuroinflammation, cognitive impairment, learning and memory, depression, anxiety, mood disorders
MeSH terms
Aging, Animals, Diabetes Mellitus, Enterocolitis, Hippocampus, Humans, Inflammation, Lupus Erythematosus, Systemic, Obesity, Diabetes Complications, Neurogenesis

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