Evidence map›Paper›PMID 23687437›Full record

ArticleMolecular vision2013

Development of novel LOXL1 genotyping method and evaluation of LOXL1, APOE and MTHFR polymorphisms in exfoliation syndrome/glaucoma in a Greek population.

Dimitrios Chiras, Konstantina Tzika, Haris Kokotas, Samantha C Oliveira, Maria Grigoriadou, Anastasia Kastania, Kleanthi Dima, Maria Stefaniotou, Miltiadis Aspiotis, Michael B Petersen and 2 more

Open access · greenAbstract read
In one paragraph

Article in Molecular vision, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 4 pooled it
2.6field-weighted citation impact, top 12% 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, 4 syntheses or guidelines pooled it, 23 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. The polymorphism of methylenetetrahydrofolate reductase C677T but not A1298C contributes to gastric cancer.Tumour biology : the journal of the International Society for Oncodevelopmental Biology and Medicine · 2014
    Pooled it
  4. Pooled it
  5. International journal of molecular sciences · 2024
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  14. Genetics of exfoliation syndrome and glaucoma.International ophthalmology clinics · 2014
    Review
  15. In vivo (Athens, Greece)
    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

12 authors at 1 institution in 1 country.

Dimitrios ChirasDepartment of Ophthalmology, University Hospital of Ioannina, Ioannina, Greece.
Konstantina Tzika
Haris Kokotas
Samantha C Oliveira
Maria Grigoriadou
Anastasia Kastania
Kleanthi Dima
Maria Stefaniotou
Miltiadis Aspiotis
Michael B Petersen
Christos Kroupis
George Kitsos
University Hospital of Ioannina · GR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeIn the Greek population of Epirus, exfoliation syndrome (XFS) and exfoliation glaucoma (XFG) occur at a high prevalence. In this study, we validate a novel lysyl oxidase-like 1 (LOXL1) genotyping method, investigate the previously reported association of LOXL1 with XFS/XFG, and evaluate apolipoprotein E (APOE) and methylenetetrahydrofolate reductase (MTHFR) polymorphisms as genetic risk factors for both conditions in our population.

methodsBlood samples were collected from 82 patients with XFG, 69 patients with XFS, 52 patients with primary open-angle glaucoma (POAG), and 107 controls. APOE and MTHFR 677C>T genotyping was performed from extracted genomic DNA with established methods. A novel methodology of real-time PCR and melting curve analysis was developed and validated to accurately genotype the LOXL1 G153D and R141L polymorphisms by using two different fluorescent channels of the LightCycler instrument (Roche) examining each SNP separately.

resultsNo significant differences were observed for the APOE and MTHFR polymorphisms between the patients with XFS, the patients with XFG, and the control subjects. The APOE ε2 allele appears to be associated with elevated risk of POAG in our population. Our novel LOXL1 genotyping method was easy to perform, fast, and accurate. A statistically significant association was found for the LOXL1 gene with XFS/XFG in this Greek population. The association of XFS and XFG with G153D appeared to be less powerful in this population (XFS: odds ratio [OR]=2.162, p=0.039, XFG: OR=2.794, p=0.002) compared to other populations, and for R141L, the association was proven only with XFG (OR=3.592, p<0.001). Neither of the two LOXL1 SNPs was significantly associated with POAG.

conclusionsWe confirmed the association between LOXL1 and XFS/XFG, but the APOE and MTHFR polymorphisms are not significant risk factors for the development of XFS/XFG in our population of patients from Epirus (Greece).

Indexed as

AgedAmino Acid OxidoreductasesAmino Acid SequenceApolipoproteins ECase-Control StudiesExfoliation SyndromeFemaleGenotyping TechniquesGlaucoma, Open-AngleGreeceHumansMaleMethylenetetrahydrofolate Reductase (NADPH2)Molecular Sequence DataNucleic Acid DenaturationPolymorphism, Single NucleotideAmino Acid OxidoreductasesApolipoproteins ELOXL1 protein, humanMethylenetetrahydrofolate Reductase (NADPH2)MTHFR protein, human

Identifiers

PMID23687437
PMCPMC3654845
OpenAlexW183460740

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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.