Cited by 116Neurogenesis and neuroplasticity mechanismsNeuropeptides and Animal PhysiologyPharmacological Receptor Mechanisms and Effects

Chronic morphine induces premature mitosis of proliferating cells in the adult mouse subgranular zone

Mandyam, Chitra D., Norris, Rebekah D., Eisch, Amelia J.·2004·Journal of Neuroscience Research

Abstract

The birth of cells with neurogenic potential in the adult brain is assessed commonly by detection of exogenous S phase markers, such as bromodeoxyuridine (BrdU). Analysis of other phases of the cell cycle, however, can provide insight into how external factors, such as opiates, influence the cycling of newly born cells. To this end, we examined the expression of two endogenous cell cycle markers in relation to BrdU: proliferating cell nuclear antigen (PCNA) and phosphorylated histone H3 (pHisH3). Two hours after one intraperitoneal BrdU injection, BrdU‐, PCNA‐, and pHisH3‐immunoreactive (IR) cells exhibited similar distribution in the adult mouse subgranular zone (SGZ). Quantitative analysis within the SGZ revealed a relative abundance of cells labeled for PCNA > BrdU >> pHisH3. Similar to our reports in rat SGZ, chronic morphine treatment decreased BrdU‐ and PCNA‐IR cells in mouse SGZ by 28 and 38%, respectively. We also show that pHisH3‐IR cells are influenced by chronic morphine to a greater extent (58% decrease) than are BrdU‐ or PCNA‐IR cells. Cell cycle phase analysis of SGZ BrdU‐IR cells using triple labeling for BrdU, PCNA, and pHisH3 revealed premature mitosis in chronic morphine‐treated mice. These results suggest that morphine‐treated mice have a shorter Gap2/mitosis (G 2/M) phase when compared to sham‐treated mice. These findings demonstrate the power of using a combination of exogenous and endogenous cell cycle markers and nuclear morphology to track proliferating cells through different phases of the cell cycle and to reveal the regulation of cell cycle phase by chronic morphine. © 2004 Wiley‐Liss, Inc.

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Crossref · 10.1002/jnr.20090

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Authors
Mandyam, C. D., Norris, R. D., & Eisch, A. J.
Affiliations
The University of Texas Southwestern Medical Center (US)
Corresponding author
Eisch, Amelia J.
Venue
Journal of Neuroscience Research
Publisher
Wiley
Published
2004-05-03
Volume
76
Issue
6
Pages
783-794
ISSN
  • 0360-4012 (ISSN-L)
  • 1097-4547
OpenAlex
W2064038456
Cited by
116
References
67
Citations by year
2026: 1 · 2023: 1 · 2022: 2 · 2021: 2 · 2020: 4 · 2019: 3 · 2018: 5 · 2017: 3 · 2016: 6 · 2015: 2 · 2014: 13 · 2013: 5 · 2012: 6
FWCI
2.61
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Neuroscience Research (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institute on Aging (P30AG012300, AG 12300)
  • National Institute on Drug Abuse (DA-07290)
Topics
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuropeptides and Animal Physiology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Pharmacological Receptor Mechanisms and Effects
Keywords
chronic morphine, subgranular zone, adult neurogenesis, premature mitosis, cell cycle phases, proliferating cell nuclear antigen, phosphorylated histone H3, bromodeoxyuridine, G2/M phase, opiates
MeSH terms
Animals, Bromodeoxyuridine, Cell Cycle, Cell Differentiation, Drug Administration Schedule, Hippocampus, Histones, Immunohistochemistry, Male, Mice, Inbred C57BL, Morphine, Neurons, Phosphorylation, Stem Cells, Biomarkers, Proliferating Cell Nuclear Antigen, Mice

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