Evidence map›Paper›PMID 34830266›Full record

ArticleInternational journal of molecular sciences2021

Lactoferrin Ameliorates Dry Eye Disease Potentially through Enhancement of Short-Chain Fatty Acid Production by Gut Microbiota in Mice.

Samuel Connell, Motoko Kawashima, Shigeru Nakamura, Toshihiro Imada, Hiromitsu Yamamoto, Kazuo Tsubota, Shinji Fukuda

Open access · goldAbstract read
In one paragraph

Article in International journal of molecular sciences, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
3.6field-weighted citation impact, top 7% 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

12 citing papers in PubMed, 23 citations in OpenAlex.

  1. Article
  2. Review
  3. Translating Biomarker Discovery: From Bench to Bedside in Dry Eye Disease.International journal of molecular sciences · 2025
    Review
  4. Review
  5. Article
  6. Article
  7. Article
  8. Review
  9. Article
  10. Targeting the Gut-Eye Axis: An Emerging Strategy to Face Ocular Diseases.International journal of molecular sciences · 2023
    Review
  11. Article
  12. 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

7 authors at 2 institutions in 1 country.

Samuel ConnellDepartment of Ophthalmology, Keio University School of Medicine, Shinjuku-ku, Tokyo 160-8582, Japan.
Motoko KawashimaDepartment of Ophthalmology, Keio University School of Medicine, Shinjuku-ku, Tokyo 160-8582, Japan.
Shigeru NakamuraDepartment of Ophthalmology, Keio University School of Medicine, Shinjuku-ku, Tokyo 160-8582, Japan.
Toshihiro ImadaDepartment of Ophthalmology, Keio University School of Medicine, Shinjuku-ku, Tokyo 160-8582, Japan.
Hiromitsu YamamotoInstitute for Advanced Biosciences, Keio University, Tsuruoka 997-0052, Yamagata, Japan.
Kazuo TsubotaDepartment of Ophthalmology, Keio University School of Medicine, Shinjuku-ku, Tokyo 160-8582, Japan.ORCID 0000-0002-8874-7111
Shinji FukudaInstitute for Advanced Biosciences, Keio University, Tsuruoka 997-0052, Yamagata, Japan.ORCID 0000-0001-5161-9880
Keio University · JPUniversity of Tsukuba · JP

Funding

AMED-CREST (JP21gm1010009 to S.F.)Food Science Institute Foundation to S.F.JST ERATO (JPMJER1902 to S.F.)Program for the Advancement of Research in Core Projects under Keio University's Longevity Initiative (to S.F. and K.T.)Takeda Science Foundation none (to S.F.)
6 · The paper itself

Abstract

Lactoferrin is a glycoprotein found at high concentrations within exocrine secretions, including tears. Low levels of lactoferrin have been implicated in the loss of tear secretion and ageing. Furthermore, lactoferrin possesses a range of functionalities, including anti-inflammatory properties and the ability to modulate the gut microbiota. Expanding evidence demonstrates a crucial role of the gut microbiota in immune regulation and development. The specific composition of bacterial species of the gut has a profound influence on local and systemic inflammation, leading to a protective capacity against a number of inflammatory diseases, potentially by the induction of regulatory immune cells. In this study, we demonstrated that oral administration of lactoferrin maintains tear secretion in a restraint and desiccating stress induced mouse model of dry eye disease. Furthermore, we revealed that lactoferrin induces the reduction of inflammatory cytokines, modulates gut microbiota, and induces short-chain fatty acid production. Whereas, the antibiotic vancomycin abrogates the effects of lactoferrin on dry eye disease and significantly reduces short-chain fatty acid concentrations. Therefore, this protective effect of LF against a mice model of DED may be explained by our observations of an altered gut microbiota and an enhanced production of immunomodulatory short-chain fatty acids.

Indexed as

Administration, OralAnimalsAnti-Bacterial AgentsCytokinesDisease Models, AnimalDNA, BacterialDry Eye SyndromesFatty Acids, VolatileFemaleGastrointestinal MicrobiomeInflammationLactoferrinMiceMice, Inbred C57BLProtective AgentsSignal TransductionAnti-Bacterial AgentsCytokinesDNA, BacterialFatty Acids, VolatileLactoferrinProtective AgentsVancomycindry eyegut microbiotalacrimal glandlactoferrinshort-chain fatty acid

Identifiers

PMID34830266
PMCPMC8624394
OpenAlexW3214459875

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.