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Proteomic identification of specific oxidized proteins in ApoE-knockout mice: relevance to Alzheimer's disease
Choi J, Forster MJ, McDonald SR, Weintraub ST, Carroll CA, Gracy RW.. Free radical biology & medicine, 2004-05-01
Topic: Amyloid, tau and blood-test diagnosis
We have examined oxidized proteins in the brain regions of wild-type (WT) and ApoE-knockout (KO) animals. Total protein oxidation in the hippocampus of young-KO (6 month) animals was approximately 2-fold greater than that of young-WT (6 month) animals and was similar to that of old-WT (18 month) and old-KO (18 month) animals. In the cortex of the same animals, the levels of total protein oxidation in all four groups were not significantly different. Two-dimensional electrophoresis (2-DE) coupled with immunostaining for protein carbonylation revealed six specific oxidation-sensitive proteins, the oxidation levels of which were increased in young-KO, old-WT, and old-KO mice compared with young-WT mice. These six oxidation-sensitive proteins were identified by mass spectrometry as glial fibrillary acidic protein, creatine kinase BB, disulfide isomerase, chaperonin subunit 5, dihydropyrimidase-related protein 2, and mortalin. These results indicate that the ApoE gene product offers protection against age-associated oxidative damage in the brain. Moreover, two of these proteins, creatine kinase and dihydropyrimidase-related protein 2, have recently been found to be oxidized in the brains of human subjects with Alzheimer's disease [Aksenov et al. J. Neurochem. 74: 2520-2527; 2000; Castegna et al. J. Neurochem. 82: 1524-1532; 2002]. These data suggest that the ApoE-knockout mouse serves as an appropriate model for studying pathogenic oxidative mechanisms influencing risk and progression of Alzheimer's disease.
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APA 7th
Choi, J., Forster, M. J., McDonald, SR., Weintraub, S. T., Carroll, C. A., & Gracy, R. W. (2004). Proteomic identification of specific oxidized proteins in ApoE-knockout mice: relevance to Alzheimer's disease. Free radical biology & medicine. https://doi.org/10.1016/j.freeradbiomed.2004.02.002
Vancouver
Choi J, Forster MJ, McDonald SR, Weintraub ST, Carroll CA, Gracy RW. Proteomic identification of specific oxidized proteins in ApoE-knockout mice: relevance to Alzheimer's disease. Free radical biology & medicine. 2004. doi:10.1016/j.freeradbiomed.2004.02.002. PMID: 15082069.
BibTeX
@article{choi2004-15082069,
author = {Choi, J. and Forster, M. J. and McDonald, SR. and Weintraub, S. T. and Carroll, C. A. and Gracy, R. W.},
title = {{Proteomic identification of specific oxidized proteins in ApoE-knockout mice: relevance to Alzheimer's disease}},
journal = {Free radical biology \& medicine},
year = {2004},
doi = {10.1016/j.freeradbiomed.2004.02.002},
pmid = {15082069},
url = {https://doi.org/10.1016/j.freeradbiomed.2004.02.002}
}
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Key findings
- In the cortex of the same animals, the levels of total protein oxidation in all four groups were not significantly different.
- Two-dimensional electrophoresis (2-DE) coupled with immunostaining for protein carbonylation revealed six specific oxidation-sensitive proteins, the oxidation levels of which were increased in young-KO, old-WT, and old-KO mice compared with young-WT mice.
- These results indicate that the ApoE gene product offers protection against age-associated oxidative damage in the brain.
- These data suggest that the ApoE-knockout mouse serves as an appropriate model for studying pathogenic oxidative mechanisms influencing risk and progression of Alzheimer's disease.
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Study details
- Evidence strengthLow
How this study scored 36/100
Published in a peer-reviewed journal. Scored zero for study design, sample size, effect reported and randomised / blinded because the record does not state it. We have no data on journal's citation record, times cited, citations per year, impact for its field and year, cited by studies here, still being cited, senior author's track record, institution's track record and multi-centre collaboration, so those were left out: it earned 21 of the 58 points we could judge it on, which is 36 out of 100.
| Component | Points | Why |
|---|---|---|
| Journal tier | 7 / 10 | Tier 3 — peer-reviewed journal (Free radical biology & medicine) |
| Journal's citation record | — / 4 | No journal record from OpenAlex — left out of this score |
| Study design | 0 / 12 | No study design recorded — scores zero, not guessed (not stated in the record — scored 0) |
| Strength of evidence | 1 / 5 | Rated “low” in our summary |
| Peer-review validation | 10 / 10 | Peer-reviewed. Published as an article in a named peer-reviewed journal. |
| How recent | 1 / 5 | 2004 — older than 20 years, still counted |
| Sample size | 0 / 4 | Participant count not stated — scores zero (not stated in the record — scored 0) |
| Effect reported | 0 / 3 | No effect size reported — scores zero (not stated in the record — scored 0) |
| Studied in people | 0 / 3 | Laboratory or animal study (title names “mice”) — scores zero |
| Randomised / blinded | 0 / 2 | No randomisation or blinding stated — scores zero (not stated in the record — scored 0) |
| Times cited | — / 7 | No citation count (not found in OpenAlex) — left out of this score |
| Citations per year | — / 5 | No citation count or no year — left out of this score |
| Impact for its field and year | — / 6 | No field-weighted citation impact (OpenAlex has none yet) — left out of this score |
| Cited by studies here | — / 6 | Not yet checked against this library's citation graph — left out of this score |
| Still being cited | — / 4 | No yearly citation counts — left out of this score |
| Senior author's track record | — / 4 | Senior author's record not available — left out of this score |
| Institution's track record | — / 3 | No institution listed in OpenAlex — left out of this score |
| Multi-centre collaboration | — / 3 | Institutions not listed — left out of this score |
| Indexed in PubMed | 2 / 2 | Indexed in PubMed (PMID 15082069) |
| Free to read | 0 / 2 | Behind a paywall — scores zero |
| Points | 21 / 58 | Scored on 11 of 20 parts. We have no data for the rest, so they are left out: 21 of the 58 points we could judge it on is 36 out of 100. |
| Total | 36 / 100 | — |
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