Evidence map›Paper›PMID 34533687›Full record

Observational studyInternational ophthalmology2021

Serum and aqueous humor levels of brain-derived neurotrophic factor in patients with primary open-angle glaucoma and normal-tension glaucoma.

Yu Wan Cha, Seong Taeck Kim

Abstract readObservational Study
PubMed Publisher
In one paragraph

Observational study in International ophthalmology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
2.1field-weighted citation impact, top 13% 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

8 citing papers in PubMed, 15 citations in OpenAlex.

  1. Article
  2. Review
  3. Review
  4. Pharmaceutical Approaches to Normal Tension Glaucoma.Pharmaceuticals (Basel, Switzerland) · 2023
    Review
  5. Review
  6. A, B, C's of Trk Receptors and Their Ligands in Ocular Repair.International journal of molecular sciences · 2022
    Review
  7. Review
  8. Review
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

2 authors at 1 institution in 1 country.

Yu Wan ChaDepartment of Ophthalmology, School of Medicine, Chosun University, 365 Philmun-daero, Dong-gu, Gwangju, 61453, Republic of Korea.
Seong Taeck KimDepartment of Ophthalmology, School of Medicine, Chosun University, 365 Philmun-daero, Dong-gu, Gwangju, 61453, Republic of Korea. s20age@hanmail.net.ORCID http://orcid.org/0000-0002-8884-1933
Chosun University · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThis study was designed to compare the levels of brain-derived neurotrophic factor (BDNF) in the serum and aqueous humor (AH) of patients with primary open-angle glaucoma (POAG) and normal-tension glaucoma (NTG).

methodsThis prospective, observational study consists of 30 patients with POAG, 30 patients with NTG, and 30 healthy controls. The serum and AH BDNF levels were assessed using an enzyme-linked immunosorbent assay.

resultsBDNF levels in serum and AH were markedly lower in the glaucoma groups (POAG and NTG) than in the control group (p < 0.05). When comparing the NTG and POAG groups, the average serum BDNF level was significantly lower in the NTG group than in the POAG group (p < 0.05). The difference in the mean BDNF levels in AH between the POAG and NTG groups was not statistically significant. (p = 0.538).

conclusionWe confirmed that serum BDNF levels were lower in patients with NTG than in those with POAG. BDNF could be a causative systemic biomarker in NTG.

Indexed as

Glaucoma, Open-AngleLow Tension GlaucomaAqueous HumorBrain-Derived Neurotrophic FactorHumansIntraocular PressureProspective StudiesBrain-Derived Neurotrophic FactorBrain-derived neurotrophic factorNormal-tension glaucomaPrimary open-angle glaucoma

Identifiers

PMID34533687
OpenAlexW3198794082

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.