Cited by 85Parkinson's Disease Mechanisms and TreatmentsNeuroinflammation and Neurodegeneration MechanismsNuclear Receptors and Signaling

Doxycycline Is Neuroprotective Against Nigral Dopaminergic Degeneration by a Dual Mechanism Involving MMP-3

Cho, Yuri, Son, Hyo Jin, Kim, Eun-Mee, Choi, Ji Hyun, Kim, Sung Tae, Ji, In Jung, Choi, Dong Hee, Joh, Tong H. +2 more·2009·Neurotoxicity Research

Abstract

In Parkinson disease (PD), the dopaminergic (DAergic) neurons in the substantia nigra undergo degeneration. While the exact mechanism for the degeneration is still not completely understood, neuronal apoptosis and inflammation are thought to play roles. We have recently obtained evidence that matrix metalloproteinase (MMP)-3 plays a crucial role in the apoptotic signal in DAergic cells as well as activation of microglia. The present study tested whether doxycycline might modulate MMP-3 and provide neuroprotection of DAergic neurons. Doxycycline effectively suppressed the expression of MMP-3 induced in response to cellular stress in the DAergic CATH.a cells. This was accompanied by protection of CATH.a cells as well as primary cultured mesencephalic DAergic neurons via attenuation of apoptosis. The active form of MMP-3, released under the cell stress condition, was also decreased in the presence of doxycycline. In addition, doxycycline led to downregulation of MMP-3 in microglial BV-2 cells exposed to lipopolysaccharide (LPS). This was accompanied by suppression of production of nitric oxide and TNF-alpha, as well as gene expression of iNOS, TNF-alpha, IL-1beta, and COX-2. In vivo, doxycycline provided neuroprotection of the nigral DAergic neurons following MPTP treatment, as assessed by tyrosine hydroxylase immunocytochemistry and silver staining, and suppressed microglial activation and astrogliosis as assessed by Iba-1 and GFAP immunochemistry, respectively. Taken together, doxycycline showed neuroprotective effect on DAergic system both in vitro and in vivo and this appeared to derive from anti-apoptotic and anti-inflammatory mechanisms involving downregulation of MMP-3.

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Crossref · 10.1007/s12640-009-9078-1

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Authors
Cho, Y., Son, H. J., Kim, E.-M., Choi, J. H., Kim, S. T., Ji, I. J., Choi, D. H., Joh, T. H., Kim, Y. S., & Hwang, O.
Affiliations
  • University of Ulsan (KR)
  • Cornell University (US)
Corresponding author
Hwang, Onyou
Venue
Neurotoxicity Research
Published
2009-07-07
Volume
16
Issue
4
Pages
361-371
ISSN
  • 1029-8428 (ISSN-L)
  • 1476-3524
OpenAlex
W2052289462
Cited by
85
References
50
Citations by year
2026: 2 · 2025: 2 · 2024: 1 · 2023: 3 · 2022: 5 · 2021: 12 · 2020: 5 · 2019: 2 · 2018: 3 · 2017: 7 · 2016: 6 · 2015: 9 · 2014: 5 · 2013: 7 · 2012: 7
FWCI
3.41
Type
journal article
Language
en
Open access
closed
Locations
  • Neurotoxicity Research (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institute of Neurological Disorders and Stroke (R01NS062827)
Topics
  • Health Sciences › Medicine › Neurology › Parkinson's Disease Mechanisms and Treatments
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Nuclear Receptors and Signaling
Keywords
doxycycline, neuroprotection, Parkinson's disease, substantia nigra, dopaminergic neurons, matrix metalloproteinase-3, neuronal apoptosis, microglial activation, neuroinflammation, MPTP, astrocyte activation, nitric oxide, TNF-α, BV-2 cells
MeSH terms
Animals, Cells, Cultured, Dopamine, Dose-Response Relationship, Drug, Doxycycline, Enzyme-Linked Immunosorbent Assay, Female, L-Lactate Dehydrogenase, Male, Mice, Inbred C57BL, Nerve Tissue Proteins, Neurons, Nitrites, Pregnancy, Substantia Nigra, Tumor Necrosis Factor-alpha, 1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine, Gene Expression Regulation, Enzymologic, Silver Staining, Cell Death, Rats, Sprague-Dawley, Neuroprotective Agents, Statistics, Nonparametric, Matrix Metalloproteinase 3, In Situ Nick-End Labeling, Mice, Rats

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