Evidence map›Paper›PMID 30628026›Full record

Observational studyInternational ophthalmology2019

Hyperglycemia potentiates the effect of ionic calcium in photoreceptor ellipsoid zone disruption in diabetic retinopathy.

Ankita, Jana Stefanickova, Sandeep Saxena, Dwividendra K Nim, Kaleem Ahmad, Abbas A Mahdi, Apjit Kaur, Shashi K Bhasker, Jela Valaskova, Peter Kruzliak

Abstract readObservational Study
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In one paragraph

Observational study in International ophthalmology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
1.5field-weighted citation impact, top 20% 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

4 citing papers in PubMed, 8 citations in OpenAlex.

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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

10 authors at 4 institutions in 3 countries.

AnkitaDepartment of Ophthalmology, King George's Medical University, Shah Mina Road, Lucknow, Uttar Pradesh, 226003, India.
Jana StefanickovaDepartment of Ophthalmology, Faculty of Medicine, Comenius University in Bratislava and University Hospital, Bratislava, Slovakia.
Sandeep SaxenaDepartment of Ophthalmology, King George's Medical University, Shah Mina Road, Lucknow, Uttar Pradesh, 226003, India. sandeepsaxena2020@yahoo.com.
Dwividendra K NimDepartment of Pharmacology, Lady Hardinge Medical College, New Delhi, India.
Kaleem AhmadDepartment of Biochemistry, King George's Medical University, Lucknow, India.
Abbas A MahdiDepartment of Biochemistry, King George's Medical University, Lucknow, India.
Apjit KaurDepartment of Ophthalmology, King George's Medical University, Shah Mina Road, Lucknow, Uttar Pradesh, 226003, India.
Shashi K BhaskerDepartment of Ophthalmology, King George's Medical University, Shah Mina Road, Lucknow, Uttar Pradesh, 226003, India.
Jela ValaskovaDepartment of Ophthalmology, Faculty of Medicine, Comenius University in Bratislava and University Hospital, Bratislava, Slovakia.
Peter Kruzliak2nd Department of Internal Medicine, Faculty of Medicine, Comenius University and University Hospital, Bratislava, Slovakia. kruzliakpeter@gmail.com.ORCID http://orcid.org/0000-0002-7069-3784
King George's Medical University · INUniversity Hospital Bratislava · SKLady Hardinge Medical College · INMasaryk University · CZ

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo study the association of serum ionic calcium and glycated hemoglobin (HbA1c) with retinal photoreceptor ellipsoid zone (EZ) disruption in diabetic retinopathy (DR).

methodsThis is a tertiary care center-based observational cross-sectional study. Sixty-three consecutive cases, divided into 21 cases each with no diabetic retinopathy, non-proliferative diabetic retinopathy and proliferative diabetic retinopathy were included. Twenty-one healthy controls were also included. Ellipsoid zone disruption was assessed using spectral-domain optical coherence tomography. Serum ionic calcium and HbA1c were measured using standard protocol. Patient data from cases were divided into two groups according to their HbA1c levels: group 1 (HbA1c < 7, n = 26) and group 2 (HbA1c > 7, n = 37). Data were analyzed statistically.

resultsMean ionic calcium levels in group 1 and group 2 were 1.131 ± 0.073 mmol/dL and 1.170 ± 0.070 mmol/dL, respectively. In group 1, 11 out of 26 had EZ disruption (42.3%). Similarly, in group 2, 29 out of 37 had EZ disruption (78.4%). On logistic regression analysis, as compared to group 1, ellipsoid zone disruption was found to be positively associated with serum ionic calcium (p = 0.01) in group 2 cases.

conclusionIncreased levels of serum ionic calcium are associated with increased EZ disruption in patients with HbA1c > 7 in DR.

Indexed as

AdultAgedAnalysis of VarianceCalciumCase-Control StudiesCross-Sectional StudiesDiabetic RetinopathyFemaleGlycated HemoglobinHumansHyperglycemiaMaleMiddle AgedPhotoreceptor Cells, VertebrateCalciumGlycated HemoglobinDiabetic retinopathyEllipsoid zoneGlycated hemoglobinSerum calciumSpectral-domain optical coherence tomography

Identifiers

PMID30628026
OpenAlexW2909479817

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.