Evidence mapPaperPMID 33975571Full record

ArticleBMC ophthalmology2021

Retro-orbital injection of FITC-dextran combined with isolectin B4 in assessing the retinal neovascularization defect.

Jizhu Li, Yuqing Wu, Bingqian Liu, Ying Huang, Qingxiu Wu, Haichun Li, Sainan Xiao, Ying Lin, Tao Li

Abstract read
In one paragraph

Article in BMC ophthalmology, 2021. 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
field-weighted citation impact
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.

  1. Article
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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

9 authors.

Jizhu Li *State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Jinsui Road 7, Tianhe District, 510000, Guangzhou, China.
Yuqing Wu *State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Jinsui Road 7, Tianhe District, 510000, Guangzhou, China.
Bingqian LiuState Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Jinsui Road 7, Tianhe District, 510000, Guangzhou, China.
Ying HuangState Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Jinsui Road 7, Tianhe District, 510000, Guangzhou, China.
Qingxiu WuState Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Jinsui Road 7, Tianhe District, 510000, Guangzhou, China.
Haichun LiState Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Jinsui Road 7, Tianhe District, 510000, Guangzhou, China.
Sainan XiaoState Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Jinsui Road 7, Tianhe District, 510000, Guangzhou, China.
Ying LinState Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Jinsui Road 7, Tianhe District, 510000, Guangzhou, China. liny83@mail.sysu.edu.cn.
Tao LiState Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Jinsui Road 7, Tianhe District, 510000, Guangzhou, China. litao2@mail.sysu.edu.cn.ORCID http://orcid.org/0000-0001-8064-871X

Funding

National Natural Science Foundation of China 81670872Natural Science Foundation of Guangdong Province 2019A1515011347
6 · The paper itself

Abstract

backgroundA reliable and effective method is required to deliver agent that can aid the in vivo imaging of retinal vessels. The aim of the present study was to evaluate retro-orbital (RO) injection of fluorescein-labeled isothiocyanate dextran (FITC-dextran) as a method of demonstrating retinal neovascularization (NV) and avascular areas in oxygen-induced retinopathy (OIR) mice.

methodsDifferent concentrations of FITC-dextran were used to compare the efficacy of this agent in perfusing the retinal vessels. Hematoxylin-eosin (HE) staining was used to evaluate the safety of RO injection. The vitreous blood vessels and extent of NV were assessed in P17 OIR mice using FITC-dextran and compared with the corresponding measurements obtained following isolectin B4 staining or the combination of both methods.

resultsThe fluorescence of small vessels and neovascular tufts could be observed clearly following RO injection of 0.05 ml of 25 mg/ml or 50 mg/ml FITC-dextran. No visible damage to tissues adjacent to the injection site was discovered. Vitreous blood flow was gradually reduced from P0 to P5 and eventually disappeared in P17 OIR mice, as demonstrated by FITC-dextran perfusion. The retinal NV areas assessed by isolectin B4 were larger than those assessed by FITC-dextran, but the retinal avascular areas were smaller. The combination of both methods could conduce to distinguish non-functional blood vessels.

conclusionsRO injection of FITC-dextran combined with isolectin B4 is an effective, optimal method for assessing the NV area and avascular area.

Indexed as

Retinal NeovascularizationAnimalsAnimals, NewbornDextransDisease Models, AnimalFluorescein-5-isothiocyanateLectinsMiceMice, Inbred C57BLOxygenRetinaRetinal VesselsDextransFluorescein-5-isothiocyanatefluorescein isothiocyanate dextranLectinsOxygenFITC-dextranIsolectin B4NeovascularizationRetinaRetro‐orbital injectionVitreous blood vessel

Identifiers

PMID33975571
PMCPMC8112026

What Socratic holds

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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 Socratic graph.