Evidence map›Paper›PMID 22382760›Full record

ArticleAge (Dordrecht, Netherlands)2013

Accumulated hippocampal formaldehyde induces age-dependent memory decline.

Zhiqian Tong, Chanshuai Han, Wenhong Luo, Xiaohui Wang, Hui Li, Hongjun Luo, Jiangning Zhou, Jinshun Qi, Rongqiao He

Open access · bronzeAbstract readComparative Study
In one paragraph

Article in Age (Dordrecht, Netherlands), 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 74 papers.

0numbers the graph read from it
0cells of the map it votes in
74citing papers in PubMed
5.2field-weighted citation impact, top 5% 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

74 citing papers in PubMed, 213 citations in OpenAlex.

  1. Trial
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  5. Formaldehyde induces and promotes Alzheimer's disease pathologies in a 3D human neural cell culture model.Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association · 2025
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  19. [Epidural photobiomodulation accelerates the drainage of brain interstitial fluid and its mechanism].Beijing da xue xue bao. Yi xue ban = Journal of Peking University. Health sciences · 2022
    Article
  20. Article

14 more citing papers are in PubMed but not listed here.

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

9 authors at 7 institutions in 1 country.

Zhiqian TongState Key Laboratory of Brain and Cognitive Sciences, Institute of Biophysics, Chinese Academy of Sciences, Graduate University of the Chinese Academy of Sciences, Beijing, 100101, China.
Chanshuai Han
Wenhong Luo
Xiaohui Wang
Hui Li
Hongjun Luo
Jiangning Zhou
Jinshun Qi
Rongqiao He
Shantou University · CNShanxi Medical University · CNChinese Academy of Sciences · CNInstitute of Biophysics · CNInstitute of Psychology, Chinese Academy of Sciences · CNShantou University Medical College · CNUniversity of Science and Technology of China · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Aging is an important factor in memory decline in aged animals and humans and in Alzheimer's disease and is associated with the impairment of hippocampal long-term potentiation (LTP) and down-regulation of NR1/NR2B expression. Gaseous formaldehyde exposure is known to induce animal memory loss and human cognitive decline; however, it is unclear whether the concentrations of endogenous formaldehyde are elevated in the hippocampus and how excess formaldehyde affects LTP and memory formation during the aging process. In the present study, we report that hippocampal formaldehyde accumulated in memory-deteriorating diseases such as age-related dementia. Spatial memory performance was gradually impaired in normal Sprague-Dawley rats by persistent intraperitoneal injection with formaldehyde. Furthermore, excess formaldehyde treatment suppressed the hippocampal LTP formation by blocking N-methyl-D-aspartate (NMDA) receptor. Chronic excess formaldehyde treatment over a period of 30 days markedly decreased the viability of the hippocampus and down-regulated the expression of the NR1 and NR2B subunits of the NMDA receptor. Our results indicate that excess endogenous formaldehyde is a critical factor in memory loss in age-related memory-deteriorating diseases.

Indexed as

Pregnancy, AnimalAnimalsBlotting, WesternCells, CulturedCerebral CortexChromatography, High Pressure LiquidDisease Models, AnimalDown-RegulationFemaleFollow-Up StudiesFormaldehydeHippocampusHumansInjectionsMaleMemoryFormaldehydeReceptors, N-Methyl-D-Aspartate

Identifiers

PMID22382760
PMCPMC3636394
OpenAlexW2025458587

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.