Evidence map›Paper›PMID 27158612›Full record

ArticleInternational journal of ophthalmology2016

Elevated urine formaldehyde in elderly patients with primary open angle glaucoma.

Ying Cui, Tao Su, Shao-Dan Zhang, Ping Huang, Ying-Ge He, Ying Liu, Chun Zhang, Robert Ritch, Rong-Qiao He

Open access · goldAbstract read
In one paragraph

Article in International journal of ophthalmology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
0.9field-weighted citation impact, top 25% 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

3 citing papers in PubMed, 7 citations in OpenAlex.

  1. Article
  2. Review
  3. 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

9 authors at 1 institution in 1 country.

Ying CuiDepartment of Ophthalmology, Peking University Third Hospital, Beijing 100191, China; Key Laboratory of Vision Loss and Restoration, Ministry of Education, Beijing 100191, China.
Tao SuState Key Laboratory of Brain and Cognitive Science, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China.
Shao-Dan ZhangDepartment of Ophthalmology, Peking University Third Hospital, Beijing 100191, China; Key Laboratory of Vision Loss and Restoration, Ministry of Education, Beijing 100191, China.
Ping HuangDepartment of Ophthalmology, Peking University Third Hospital, Beijing 100191, China; Key Laboratory of Vision Loss and Restoration, Ministry of Education, Beijing 100191, China.
Ying-Ge HeState Key Laboratory of Brain and Cognitive Science, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China.
Ying LiuState Key Laboratory of Brain and Cognitive Science, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China.
Chun ZhangDepartment of Ophthalmology, Peking University Third Hospital, Beijing 100191, China; Key Laboratory of Vision Loss and Restoration, Ministry of Education, Beijing 100191, China.
Robert RitchEinhorn Clinical Research Center, New York Eye and Ear Infirmary of Mount Sinai, New York, NY 10003, USA.
Rong-Qiao HeState Key Laboratory of Brain and Cognitive Science, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China.
Chinese Academy of Sciences · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimTo investigate the risk factor of primary open angle glaucoma (POAG), which is the leading cause of irreversible blindness worldwide. An abnormally high level of endogenous formaldehyde (FA) has recently been found correlated with cell death and neurodegenerative disease, raising the possibility of a putative correlation of abnormal endogenous FA with POAG.

methodsThirty-four elderly patients with POAG and sixteen healthy controls were enrolled. Glaucomatous visual defects were present at both the functional (visual field) and structural [retinal nerve fiber layer (RNFL) thickness] levels. Morning urine samples were obtained and were analyzed by high-performance liquid chromatography (HPLC) to detect the endogenous FA level in a double blind manner.

resultsPatients with POAG (P<0.05) had significantly higher urine FA levels. The urine FA level of patients with severe visual field defects [mean deviation (MD)≥12 dB] was significantly (P<0.001) greater than that of patients with mild to moderate defects (MD<12 dB). By optical coherence tomography (OCT), the superior and inferior RNFL thickness of POAG group was significantly (P<0.001) thinner than in controls. Furthermore, the superior and inferior thinning of the RNFL was correlated with the elevation of urine FA concentration.

conclusionEndogenous FA level is positively correlated with the neuronal defects of POAG.

Indexed as

Alzheimer's diseaseprimary open angle glaucomaurine formaldehyde

Identifiers

PMID27158612
PMCPMC4844035
OpenAlexW2301640252

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.