Evidence map›Paper›PMID 21087963›Full record

ArticleInvestigative ophthalmology & visual science2011

Lacritin, a novel human tear glycoprotein, promotes sustained basal tearing and is well tolerated.

Sandeep Samudre, Frank A Lattanzio, Victoria Lossen, Alireza Hosseini, John D Sheppard, Robert L McKown, Gordon W Laurie, Patricia B Williams

Registry-linked trialOpen access · bronzeAbstract read
In one paragraph

Article in Investigative ophthalmology & visual science, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT06854393 (Lacripep, a Novel Investigational Agent, for Corneal Wound Healing and Ocular Surface Homeostasis), which is not on this map. Cited by 39 papers.

0numbers the graph read from it
0cells of the map it votes in
39citing papers in PubMed
5.5field-weighted citation impact, top 5% 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.

NCT06854393 phase2recruitingnot on this mapstarted 2025, after this paper: background citation

Lacripep, a Novel Investigational Agent, for Corneal Wound Healing and Ocular Surface Homeostasis

TypeinterventionalSponsorHenry M. Jackson Foundation for the Advancement of Military MedicineRan2025 to 2027Enrolled88ConditionsCorneal Epithelial Wound HealingArms0.00025% Lacripep ophthalmic solution and Placebo
3 · Its place in the literature

Who cites it

39 citing papers in PubMed, 65 citations in OpenAlex.

  1. Site-specific O-glycans influence lacritin structure and multimerization in tears.Protein science : a publication of the Protein Society · 2026
    Article
  2. Distinctive Lacritin Cleavage-Potentiated Bactericidal Alteration of thebioRxiv : the preprint server for biology · 2026
    Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Targeting Iron - Respiratory Reciprocity Promotes Bacterial Death.bioRxiv : the preprint server for biology · 2024
    Article
  9. Article
  10. Article
  11. Autophagy in the normal and diseased cornea.Experimental eye research · 2022
    Review
  12. Article
  13. Article
  14. Development of a Quantitative Immunoassay for Tear Lacritin Proteoforms.Translational vision science & technology · 2020
    Article
  15. The Lacritin-Syndecan-1-Heparanase Axis in Dry Eye Disease.Advances in experimental medicine and biology · 2020
    Review
  16. Article
  17. [Novel current and future therapy options for treatment of dry eye disease].Der Ophthalmologe : Zeitschrift der Deutschen Ophthalmologischen Gesellschaft · 2018
    Review
  18. Article
  19. TFOS DEWS II Tear Film Report.The ocular surface · 2017
    Review
  20. 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

8 authors at 3 institutions in 1 country.

Sandeep SamudreDepartment of Physiological Sciences, Eastern Virginia Medical School, Norfolk, Virginia 23501, USA. samudrss@evms.edu
Frank A Lattanzio
Victoria Lossen
Alireza Hosseini
John D Sheppard
Robert L McKown
Gordon W Laurie
Patricia B Williams
Eastern Virginia Medical School · USJames Madison University · USUniversity of Virginia · US

Funding

Structure and Function of Ocular LacritinR01EY013143 · NEI · UNIVERSITY OF VIRGINIA CHARLOTTESVILLE · PI LAURIE, GORDON WILLIAM · 2002 to 2011
$2.8M
Modeling Novel Treatments for Dry EyeR01EY018222 · NEI · UNIVERSITY OF VIRGINIA · PI LAURIE, GORDON WILLIAM · 2007 to 2011
$1.9M
Stimulation of Tear Secretion by a Novel GlycoproteinR42EY015376 · NEI · EYERX RESEARCH, INC. · PI SHEPPARD, JOHN D · 2007 to 2009
$682k
NEI NIH HHS R01 EY013143NEI NIH HHS R01 EY018222NEI NIH HHS R42 EY015376NEI NIH HHS R42 EY015376-03S109PHS HHS R01 EYO18222
6 · The paper itself

Abstract

purposeLacritin is a novel human tear glycoprotein that promotes basal tear peroxidase secretion by rat lacrimal acinar cells in vitro. This study investigates whether lacritin is prosecretory when added topically to the ocular surface of normal living rabbits, and if so, what is its efficacy and tolerability versus cyclosporine and artificial tears.

methodsPurified recombinant human lacritin (1, 10, 50, or 100 μg/mL), inactive lacritin truncation mutant C-25 (10 μg/mL), cyclosporine (0.05%), or artificial tears were topically administered to eyes of normal New Zealand White rabbits either as a single dose or three times daily for 14 days with monitoring of basal tear production. Basal tearing under proparacaine anesthesia was repeatedly assessed throughout and 1 week after chronic treatment ceased. Eyes were examined weekly by slit-lamp biomicroscopy.

resultsLacritin acutely increased basal tearing to 30% over vehicle at 240 minutes. Three times daily treatment with 10-100 μg/mL lacritin was well tolerated. Basal tearing became progressively elevated 4, 7, and 14 days later and was 50% over baseline (50 μg/mL lacritin) 1 week after treatment had ceased. Cyclosporine elevated tearing to a similar level on days 4 and 7 but had little or no effect on day 14 and had returned to baseline 1 week after ending treatment. C-25 and artificial tears had no effect.

conclusionsLacritin acutely stimulates basal tear flow that is sustained for at least 240 minutes. Two weeks of lacritin treatment three times daily was well tolerated and progressively elevated the basal tear flow. One week after treatment ended, basal tearing was still 50% over baseline. In contrast, cyclosporine triggered mild to moderate corneal irritation and a temporary elevation in tearing.

Indexed as

Administration, TopicalAnimalsCyclosporineEye ProteinsGlycoproteinsIntraocular PressureLacrimal ApparatusOphthalmic SolutionsRabbitsRecombinant ProteinsTearsTime FactorsTonometry, OcularCyclosporineEye ProteinsGlycoproteinsLACRT protein, humanOphthalmic SolutionsRecombinant Proteinstear proteins

Identifiers

PMID21087963
PMCPMC3176019
OpenAlexW2007044329

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.