Evidence map›Paper›PMID 19805021›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2009

Experimental and clinical evidence of neuroprotection by nerve growth factor eye drops: Implications for glaucoma.

Alessandro Lambiase, Luigi Aloe, Marco Centofanti, Vincenzo Parisi, Sonia Nair Báo, Flavio Mantelli, Valieria Colafrancesco, Gian Luca Manni, Massimo Gilberto Bucci, Stefano Bonini and 1 more

Registry-linked trialOpen access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT07777861 (A Randomized, Double-Masked, Placebo-Controlled Phase II Clinical Trial Evaluating the Efficacy and Safety of G01 Eye Drops in the Treatment of Optic Nerve Injury Associated With Open-Angle Glaucoma), which is not on this map. Cited by 110 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
110citing papers in PubMed, 2 pooled it
16.4field-weighted citation impact, top 1% 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.

NCT07777861 phase2recruitingnot on this mapstarted 2026, after this paper: background citation

A Randomized, Double-Masked, Placebo-Controlled Phase II Clinical Trial Evaluating the Efficacy and Safety of G01 Eye Drops in the Treatment of Optic Nerve Injury Associated With Open-Angle Glaucoma

TypeinterventionalSponsorQingdao WanMing BioCell Pharmaceutics Co.,Ltd.Ran2026 to 2027Enrolled90ConditionsPrimary Open-Angle Glaucoma, Optic Nerve InjuryArmsG01 Eye Drops 100μg/ml, G01 Eye Drops 200μg/ml, Placebo of G01 Eye Drops
3 · Its place in the literature

Who cites it

110 citing papers in PubMed, 2 syntheses or guidelines pooled it, 244 citations in OpenAlex.

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  4. Effects of subtenon-injected autologous platelet-rich plasma on visual functions in eyes with retinitis pigmentosa: preliminary clinical results.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2018
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50 more citing papers are in PubMed but not listed here.

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

11 authors at 4 institutions in 1 country.

Alessandro LambiaseCentro Integrato di Ricerca, Department of Ophthalmology, University of Rome Campus Bio-Medico and Fondazione Alberto Sordi, 00128 Rome, Italy.
Luigi Aloe
Marco Centofanti
Vincenzo Parisi
Sonia Nair Báo
Flavio Mantelli
Valieria Colafrancesco
Gian Luca Manni
Massimo Gilberto Bucci
Stefano Bonini
Rita Levi-Montalcini
Fondazione G.B. Bietti · ITEuropean Brain Research Institute · ITInstitute of Neurobiology and Molecular Medicine · ITUniversity of Rome Tor Vergata · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Elevated intraocular pressure (IOP) in glaucoma causes loss of retinal ganglion cells (RGCs) and damage to the optic nerve. Although IOP is controlled pharmacologically, no treatment is available to restore retinal and optic nerve function. We evaluated the effects of NGF eye drops in a rat model of glaucoma. We also treated 3 patients with progressive visual field defects despite IOP control. Glaucoma was induced in rats through injection of hypertonic saline into the episcleral vein. Initially, 2 doses of NGF (100 and 200 mug/mL) were tested on 24 rats, and the higher dose was found to be more effective. Glaucoma was then induced in an additional 36 rats: half untreated and half treated with 200 mug/mL NGF QID for 7 weeks. Apoptosis/survival of RGCs was evaluated by histological, biochemical, and molecular analysis. Three patients with advanced glaucoma underwent psychofunctional and electrofunctional tests at baseline, after 3 months of NGF eye drops, and after 3 months of follow-up. Seven weeks of elevated IOP caused RGC degeneration resulting in 40% cell death. Significantly less RGC loss was observed with NGF treatment (2,530 +/- 121 vs. 1,850 +/- 156 RGCs/mm(2)) associated with inhibition of cell death by apoptosis. Patients treated with NGF demonstrated long lasting improvements in visual field, optic nerve function, contrast sensitivity, and visual acuity. NGF exerted neuroprotective effects, inhibiting apoptosis of RGCs in animals with glaucoma. In 3 patients with advanced glaucoma, treatment with topical NGF improved all parameters of visual function. These results may open therapeutic perspectives for glaucoma and other neurodegenerative diseases.

Indexed as

AgedAged, 80 and overAnimalsCell DeathContrast SensitivityDisease Models, AnimalFemaleGlaucomaHumansIntraocular PressureMaleMiceMiddle AgedNerve Growth FactorNeuroprotective AgentsOphthalmic SolutionsNerve Growth FactorNeuroprotective AgentsOphthalmic Solutions

Identifiers

PMID19805021
PMCPMC2726400
OpenAlexW2122945372

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

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.