Evidence map›Paper›PMID 33736986›Full record

ArticleExperimental eye research2021

Retinal hypoxia and angiogenesis with methamphetamine.

Minsup Lee, Wendy Leskova, Randa S Eshaq, Norman R Harris

Open access · greenAbstract read
In one paragraph

Article in Experimental eye research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
1.9field-weighted citation impact, top 16% 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

10 citing papers in PubMed, 18 citations in OpenAlex.

  1. Methamphetamine-Induced Loss of Syndecan-1 and Retinal Endothelial Integrity via the TAAR-1/MMP-9 Pathway.Pathophysiology : the official journal of the International Society for Pathophysiology · 2025
    Article
  2. Article
  3. Retinal Angiogenesis in Methamphetamine Self-Administration Rats.Investigative ophthalmology & visual science · 2025
    Article
  4. Review
  5. A Mechanistic Review on Toxicity Effects of Methamphetamine.International journal of medical sciences · 2025
    Review
  6. Review
  7. Article
  8. Article
  9. Article
  10. 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

4 authors at 1 institution in 1 country.

Minsup LeeDepartment of Molecular & Cellular Physiology, Louisiana State University Health Shreveport, Shreveport, LA, 71103, USA.
Wendy LeskovaDepartment of Molecular & Cellular Physiology, Louisiana State University Health Shreveport, Shreveport, LA, 71103, USA.
Randa S EshaqDepartment of Molecular & Cellular Physiology, Louisiana State University Health Shreveport, Shreveport, LA, 71103, USA.
Norman R HarrisDepartment of Molecular & Cellular Physiology, Louisiana State University Health Shreveport, Shreveport, LA, 71103, USA. Electronic address: nharr6@lsuhsc.edu.
Louisiana State University · US

Funding

Loss of the retinal glycocalyx in diabetesR01EY025632 · NEI · LOUISIANA STATE UNIV HSC SHREVEPORT · PI HARRIS, NORMAN R · 2016 to 2020
$1.8M
NEI NIH HHS R01 EY025632
6 · The paper itself

Abstract

Central retinal artery occlusion, retinopathy, and retinal neovascularization have been reported in methamphetamine (METH) abusers. In the current study, we investigated whether METH induces retinal neovascularization in a mouse model, and if so, whether the neovascularization is associated with increased hypoxia, hypoxia-inducible factor 1α (HIF-1α), and vascular endothelial growth factor (VEGF). Mice were administrated METH by intraperitoneal injection over a 26-day period, or injected with saline as a vehicle control. The number of retinal arterioles and venules were counted using in vivo live imaging following infusion with fluorescein isothiocyanate-dextran. Excised retinas were stained with griffonia simplicifolia lectin I and flat mounted for a measurement of vascularity (length of vessels per tissue area) with AngioTool. Retinal hypoxia was examined by formation of pimonidazole adducts with an anti-pimonidazole antibody, and HIF-1α and VEGFa protein levels in the retina were detected by immunoblot. METH administration increased vascularity (including the number of arterioles) measured on Day 26. Retinal VEGFa protein level was not changed in METH-treated mice on Day 5, but was increased on Day 12 and Day 26. Hypoxia (pimonidazole adduct formation) was increased in retinas of METH-treated mice on Day 12 and Day 26, as were HIF-1α protein expression levels. These results indicate that METH administration induces hypoxia, HIF-1α, VEGFa, and angiogenesis in the retina.

Indexed as

AnimalsDisease Models, AnimalHypoxiaHypoxia-Inducible Factor 1, alpha SubunitMaleMethamphetamineMiceMice, Inbred C57BLRetinal NeovascularizationRetinal VesselsSympathomimeticsHypoxia-Inducible Factor 1, alpha SubunitMethamphetamineSympathomimeticsAngiogenesisHIF-1αHypoxiaMethamphetamineVEGF

Identifiers

PMID33736986
PMCPMC8087650
OpenAlexW3136230960

What OpenQuestion holds

Textmetadata
LicenceTDM
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.