Evidence map›Paper›PMID 24940036›Full record

ArticleMolecular vision2014

Endothelial nitric oxide synthase polymorphisms and susceptibility to high-tension primary open-angle glaucoma in an Egyptian cohort.

Wafaa A Emam, Haidy E Zidan, Bahaa-Eldin H Abdulhalim, Sherif A Dabour, Manar A Ghali, Aliaa T Kamal

Open access · greenAbstract read
In one paragraph

Article in Molecular vision, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
3.7field-weighted citation impact, top 7% 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

15 citing papers in PubMed, 1 synthesis or guideline pooled it, 32 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Article
  4. Article
  5. Molecular taxonomy of human ocular outflow tissues defined by single-cell transcriptomics.Proceedings of the National Academy of Sciences of the United States of America · 2020
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  8. Pharmacological regulation of outflow resistance distal to Schlemm's canal.American journal of physiology. Cell physiology · 2018
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  10. Vasodilatory effect of L-arginine on isolated rabbit and human posterior ciliary arteries in vitro and increased optic disc blood flow in vivo.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2017
    Article
  11. Article
  12. Review
  13. Article
  14. Is Estrogen a Therapeutic Target for Glaucoma?Seminars in ophthalmology · 2016
    Review
  15. An Updated Review on the Genetics of Primary Open Angle Glaucoma.International journal of molecular sciences · 2015
    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

6 authors at 1 institution in 1 country.

Wafaa A EmamDepartment of Medical Biochemistry, Faculty of Medicine, Zagazig University, Zagazig, Egypt.
Haidy E ZidanDepartment of Medical Biochemistry, Faculty of Medicine, Zagazig University, Zagazig, Egypt.
Bahaa-Eldin H AbdulhalimDepartment of Ophthalmology, Faculty of Medicine, Zagazig University, Zagazig, Egypt.
Sherif A DabourDepartment of Ophthalmology, Faculty of Medicine, Zagazig University, Zagazig, Egypt.
Manar A GhaliDepartment of Ophthalmology, Faculty of Medicine, Zagazig University, Zagazig, Egypt.
Aliaa T KamalDepartment of Medical Biochemistry, Faculty of Medicine, Zagazig University, Zagazig, Egypt.
Zagazig University · EG

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo analyze the association of polymorphisms of the endothelial nitric oxide synthase (NOS3) gene and nitric oxide (NO) levels with high-tension primary open-angle glaucoma (POAG) in an Egyptian population.

methodsThis case-control study included 160 patients who had high-tension POAG (76 men and 84 women; age range 41-75 years) and 110 controls (56 men and 54 women; age range 55-78 years). Genotyping of T-786C (rs2070744), Glu298Asp (rs1799983), and the 27-bp insertional variable number tandem repeat (VNTR) in intron 4 of the NOS3 gene was performed with an amplification refractory mutation system PCR assay. The NO level was determined by measuring the total nitrate/nitrite (NOX) plasma level.

resultsThe CC genotype of the T-786C polymorphism was significantly associated with POAG (odds ratio [OR] = 2.54, 95% confidence interval [CI] = 1.26-5.13, p = 0.007). The C allele was significantly associated with POAG (OR = 1.86, 95% CI = 1.29-2.69, p<0.001). After stratification by sex, the CC genotype and the C allele were significantly associated with POAG in women only (OR = 3.06, 95% CI = 1.07-8.74, p = 0.03 for the CC genotype, and OR = 2.09, 95% CI = 1.24-3.53, p = 0.005 for the C allele). The genotype and allele frequencies of Glu298Asp and intron 4 were not significant between the patients with POAG and the controls, and after stratification by sex. The mean NOX plasma level was significantly lower in patients with POAG than in the controls (p = 0.01) and low in the (TC+CC) genotype compared to the TT genotype of T-786C in the patients and controls (p<0.001).

conclusionsThe results suggest that the CC genotype of T-786C NOS3 may be associated with an increased risk of developing high-tension POAG in Egyptians, particularly women. In addition, decreased NO levels may play a role in the development of POAG.

Indexed as

Genetic Predisposition to DiseaseAdultAgedCase-Control StudiesCohort StudiesDemographyEgyptFemaleGene FrequencyGlaucoma, Open-AngleHumansMaleMiddle AgedNitratesNitric Oxide Synthase Type IIINitritesNitratesNitric Oxide Synthase Type IIINitritesNOS3 protein, human

Identifiers

PMID24940036
PMCPMC4057245
OpenAlexW2248270048

What OpenQuestion holds

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LicenceCC BY-NC-ND
Read underepoch 390

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.