Cited by 56Neuroscience and Neuropharmacology ResearchNeuroinflammation and Neurodegeneration MechanismsMedical and Biological Sciences

Redefining varicose projection astrocytes in primates.

Falcone, Carmen, McBride, Erin L., Hopkins, William D., Hof, Patrick R., Manger, Paul R., Sherwood, Chet C., Noctor, Stephen C., Martínez‐Cerdeño, Verónica·2022·Glia

Abstract

Varicose projection astrocytes (VP‐As) are found in the cerebral cortex and have been described to be specific to humans and chimpanzees. To further examine the phylogenetic distribution of this cell type, we analyzed cortical tissue from several primates ranging from primitive primates to primates evolutionary closer to human such as apes. We specifically analyzed tissue from four strepsirrhine species, one tarsier, six species of platyrrhine monkeys, ten species of cercopithecoid monkeys, two hylobatid ape species, four to six cases each of chimpanzee, bonobo, gorilla, and orangutan, and thirteen human. We found that VP‐As were present only in human and other apes (hominoids) and were absent in all other species. We showed that VP‐As are localized to layer VI and the superficial white matter of the cortex. The presence of VP‐As co‐occured with interlaminar astrocytes that also had varicosities in their processes. Due to their location, their long tangential processes, and their irregular presence within species, we propose that VP‐As are astrocytes that develop varicosities under specific conditions and that are not a distinct astrocyte type.

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Crossref · 10.1002/glia.24093

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Authors
Falcone, C., McBride, E. L., Hopkins, W. D., Hof, P. R., Manger, P. R., Sherwood, C. C., Noctor, S. C., & Martínez‐Cerdeño, V.
Affiliations
  • Shriners Hospitals for Children - Northern California (US)
  • The University of Texas MD Anderson Cancer Center (US)
  • Icahn School of Medicine at Mount Sinai (US)
  • University of the Witwatersrand (ZA)
  • George Washington University (US)
  • University of California Davis Medical Center (US)
Venue
Glia
Publisher
Wiley
Published
2021-09-17
Volume
70
Issue
1
Pages
145-154
ISSN
  • 0894-1491 (ISSN-L)
  • 1098-1136
OpenAlex
W3200927307
Cited by
56
References
24
Citations by year
2026: 11 · 2025: 9 · 2024: 14 · 2023: 13 · 2022: 8 · 2021: 1
FWCI
4.15
Type
journal article
Language
en
Open access
closed
Locations
  • Glia (publishedVersion)
  • PubMed (publishedVersion)
  • SDL (submittedVersion)
Funders
Shriners Hospitals for Children
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Health Sciences › Medicine › Anatomy › Medical and Biological Sciences
Keywords
cerebral cortex, primate evolution, hominoids, phylogenetic distribution, superficial white matter, chimpanzees, bonobos, gorillas, orangutans, platyrrhine monkeys, human astrocytes
MeSH terms
Animals, Astrocytes, Cerebral Cortex, Biological Evolution, Phylogeny, Primates

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