Evidence map›Paper›PMID 31365873›Full record

ArticleCell reports2019

Metabolic Deregulation of the Blood-Outer Retinal Barrier in Retinitis Pigmentosa.

Wei Wang, Ashwini Kini, Yekai Wang, Tingting Liu, Yao Chen, Eric Vukmanic, Douglas Emery, Yongqing Liu, Xiaoqin Lu, Lei Jin and 10 more

Open access · goldAbstract read
In one paragraph

Article in Cell reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 63 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
63citing papers in PubMed, 1 pooled it
3.9field-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.

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

63 citing papers in PubMed, 1 synthesis or guideline pooled it, 93 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Review
  5. Article
  6. Article
  7. Selective deletion ofiScience · 2026
    Article
  8. Article
  9. Article
  10. Article
  11. RPE-specific MCT2 expression promotes cone survival in models of retinitis pigmentosa.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  12. Article
  13. Article
  14. Review
  15. Article
  16. Review
  17. Genetically Encoded Metabolic Sensors to Study Retina Metabolism.Advances in experimental medicine and biology · 2025
    Review
  18. Role of RPE Phagocytosis in the Retina Metabolic Ecosystem.Advances in experimental medicine and biology · 2025
    Review
  19. Review
  20. Article

3 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

20 authors at 3 institutions in 3 countries.

Wei WangDepartment of Ophthalmology and Visual Sciences, University of Louisville Health Sciences Center, Louisville, KY 40202, USA.
Ashwini KiniDepartment of Ophthalmology and Visual Sciences, University of Louisville Health Sciences Center, Louisville, KY 40202, USA.
Yekai WangDepartments of Ophthalmology and Biochemistry, West Virginia University, Morgantown, WV 26506, USA.
Tingting LiuDepartment of Ophthalmology and Visual Sciences, University of Louisville Health Sciences Center, Louisville, KY 40202, USA; The Third Affiliated Hospital of Dalian Medical University, 40 Qianshan Road, Dalian 116033, China.
Yao ChenDepartment of Ophthalmology and Visual Sciences, University of Louisville Health Sciences Center, Louisville, KY 40202, USA.
Eric VukmanicDepartment of Ophthalmology and Visual Sciences, University of Louisville Health Sciences Center, Louisville, KY 40202, USA.
Douglas EmeryDepartment of Ophthalmology and Visual Sciences, University of Louisville Health Sciences Center, Louisville, KY 40202, USA.
Yongqing LiuDepartment of Ophthalmology and Visual Sciences, University of Louisville Health Sciences Center, Louisville, KY 40202, USA; James Graham Brown Cancer Center, University of Louisville Health Sciences Center, Louisville, KY 40202, USA.
Xiaoqin LuDepartment of Ophthalmology and Visual Sciences, University of Louisville Health Sciences Center, Louisville, KY 40202, USA.
Lei JinDepartment of Ophthalmology and Visual Sciences, University of Louisville Health Sciences Center, Louisville, KY 40202, USA; The Affiliated Hospital of Shandong Traditional Chinese Medicine University, 48 Yingxiongshan Road, Jinan 250031, China.
San Joon LeeDepartment of Ophthalmology and Visual Sciences, University of Louisville Health Sciences Center, Louisville, KY 40202, USA; Department of Ophthalmology, Kosin University College of Medicine, 262 Gamcheon-ro, Seo-gu, Busan 49267, Korea.
Patrick ScottDepartment of Ophthalmology and Visual Sciences, University of Louisville Health Sciences Center, Louisville, KY 40202, USA.
Xiao LiuDepartment of Ophthalmology and Visual Sciences, University of Louisville Health Sciences Center, Louisville, KY 40202, USA; Department of Ophthalmology, Second Xiangya Hospital of Central South University, 139 Middle Renmin Road, Changsha 410011, China.
Kevin DeanDepartment of Ophthalmology and Visual Sciences, University of Louisville Health Sciences Center, Louisville, KY 40202, USA.
Qingxian LuDepartment of Ophthalmology and Visual Sciences, University of Louisville Health Sciences Center, Louisville, KY 40202, USA.
Enzo FortunyDepartment of Neurosurgery, University of Louisville Health Sciences Center, Louisville, KY 40202, USA.
Robert JamesDepartment of Neurosurgery, University of Louisville Health Sciences Center, Louisville, KY 40202, USA.
Henry J KaplanDepartment of Ophthalmology and Visual Sciences, University of Louisville Health Sciences Center, Louisville, KY 40202, USA.
Jianhai DuDepartments of Ophthalmology and Biochemistry, West Virginia University, Morgantown, WV 26506, USA. Electronic address: jianhai.du@wvumedicine.org.
Douglas C DeanDepartment of Ophthalmology and Visual Sciences, University of Louisville Health Sciences Center, Louisville, KY 40202, USA; James Graham Brown Cancer Center, University of Louisville Health Sciences Center, Louisville, KY 40202, USA; Birth Defects Center, University of Louisville Health Sciences Center, Louisville, KY 40202, USA. Electronic address: douglas.dean@louisville.edu.
University of Louisville · USWest Virginia University · USCentral South University · CN

Funding

Blood outer retina barrier regulationR01EY030933 · NEI · UNIVERSITY OF LOUISVILLE · PI DOUGLAS Chase DEAN · 2020 to 2026
$4.3M
Cone Rescue in Retinitis PigmentosaR01EY026158 · NEI · UNIVERSITY OF LOUISVILLE · PI DEAN, DOUGLAS CHASE, MCCALL, MAUREEN A · 2016 to 2019
$2.4M
NEI NIH HHS R01 EY026158NEI NIH HHS R01 EY030933
6 · The paper itself

Abstract

Retinitis pigmentosa (RP) initiates with diminished rod photoreceptor function, causing peripheral and night-time vision loss. However, subsequent loss of cone function and high-resolution daylight and color vision is most debilitating. Visual pigment-rich photoreceptor outer segments (OS) undergo phagocytosis by the retinal pigment epithelium (RPE), and the RPE also acts as a blood-outer retinal barrier transporting nutrients, including glucose, to photoreceptors. We provide evidence that contact between externalized phosphatidylserine (PS) on OS tips and apical RPE receptors activates Akt, linking phagocytosis with glucose transport to photoreceptors for new OS synthesis. As abundant mutant rod OS tips shorten in RP, Akt activation is lost, and onset of glucose metabolism in the RPE and diminished glucose transport combine to cause photoreceptor starvation and accompanying retinal metabolome changes. Subretinal injection of OS tip mimetics displaying PS restores Akt activation, glucose transport, and cone function in end-stage RP after rods are lost.

Indexed as

AnimalsBlood-Retinal BarrierCarrier ProteinsEye ProteinsMicePhosphatidylserinesRetinal Cone Photoreceptor CellsRetinal Pigment EpitheliumRetinal Rod Photoreceptor CellsRetinitis PigmentosaSwineCarrier ProteinsEye ProteinsPhosphatidylserinesglucose transportmetabolismphotoreceptorsretinal pigment epitheliumretinitis pigmentosavision

Identifiers

PMID31365873
PMCPMC6693665
OpenAlexW2964948340

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.