Evidence map›Paper›PMID 25324030›Full record

ArticleMolecular medicine reports2014

D‑galactose‑induced mitochondrial DNA oxidative damage in the auditory cortex of rats.

Zhengde Du, Qiong Yang, Tao Zhou, Lin Liu, Shuo Li, Shixiong Chen, Chunsheng Gao

Open access · hybridAbstract read
In one paragraph

Article in Molecular medicine reports, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
0.6field-weighted citation impact, top 40% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

14 citing papers in PubMed, 27 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Review
  7. Review
  8. Article
  9. Galactose-Induced Skin Aging: The Role of Oxidative Stress.Oxidative medicine and cellular longevity · 2020
    Review
  10. Protective Effects of Silymarin Against Age-Related Hearing Loss in an Aging Rat Model.Indian journal of otolaryngology and head and neck surgery : official publication of the Association of Otolaryngologists of India · 2019
    Article
  11. Article
  12. Article
  13. Article
  14. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 4 institutions in 1 country.

Zhengde DuDepartment of Otorhinolaryngology, Nanshan Affiliated Hospital of Guangdong Medical College, Shenzhen, Guangdong 518052, P.R. China.
Qiong YangDepartment of Otorhinolaryngology, Nanshan Affiliated Hospital of Guangdong Medical College, Shenzhen, Guangdong 518052, P.R. China.
Tao ZhouDepartment of Otorhinolaryngology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, P.R. China.
Lin LiuCollege of Pharmacy, Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region 530021, P.R. China.
Shuo LiDepartment of Otorhinolaryngology, Nanshan Affiliated Hospital of Guangdong Medical College, Shenzhen, Guangdong 518052, P.R. China.
Shixiong ChenShenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong 518055, P.R. China.
Chunsheng GaoDepartment of Otorhinolaryngology, Nanshan Affiliated Hospital of Guangdong Medical College, Shenzhen, Guangdong 518052, P.R. China.
Guangdong Medical College · CNChinese Academy of Sciences · CNGuangxi Medical University · CNUnion Hospital · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Chronic administration of D‑galactose (D‑gal) is a useful method for establishing a model of natural aging in the auditory system. Previous studies have demonstrated that NADPH oxidases (NOXs) may be an important source of reactive oxygen species (ROS) in the peripheral auditory system (PAS) and cause an increase in mitochondrial DNA (mtDNA) common deletion (CD) levels in the PAS and central auditory system (CAS) of rats with D‑gal‑induced aging. However, the source of the ROS in the CAS and the mechanisms of age‑related hearing loss (ARHL) have yet to be elucidated. In the present study, male Sprague Dawley rats were administered a daily injection of D‑gal (150, 300 and 500 mg/kg, respectively) for eight weeks. All three doses of D‑gal caused a significant increase in the expression of NOX2, 8‑hydroxy‑2‑deoxyguanosine, a biomarker of DNA oxidative damage, and uncoupling protein 2, together with a decrease in the mitochondrial total antioxidant capabilities in the auditory cortex, as compared with the control rats (injected daily with the same volume of 0.9% saline for eight weeks). The levels of the mtDNA CD were also increased in the auditory cortex of the D‑gal‑induced aging rats. These findings suggest that both NOX‑ and mitochondria‑associated ROS generation may contribute to mtDNA oxidative damage in the auditory cortex of the CAS of D‑gal‑induced aging rats. This study may provide novel insight into the development of ARHL.

Indexed as

AgingAnimalsAntioxidantsAuditory CortexDeoxyguanosineDNA DamageDNA, MitochondrialGalactoseIon ChannelsMaleMembrane GlycoproteinsMitochondriaMitochondrial ProteinsNADPH Oxidase 2NADPH OxidasesOxidative StressAntioxidantsCybb protein, ratDeoxyguanosineDNA, MitochondrialGalactoseIon ChannelsMembrane GlycoproteinsMitochondrial ProteinsNADPH Oxidase 2NADPH OxidasesReactive Oxygen SpeciesUcp2 protein, ratUncoupling Protein 2

Identifiers

PMID25324030
PMCPMC4227424
OpenAlexW2045054303

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LicenceCC BY
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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.