Evidence map›Paper›PMID 26535077›Full record

ArticleBiomolecules & therapeutics2015

Vitamin C Stimulates Epidermal Ceramide Production by Regulating Its Metabolic Enzymes.

Kun Pyo Kim, Kyong-Oh Shin, Kyungho Park, Hye Jeong Yun, Shivtaj Mann, Yong Moon Lee, Yunhi Cho

Abstract read
In one paragraph

Article in Biomolecules & therapeutics, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
1.5field-weighted citation impact, top 18% 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

22 citing papers in PubMed, 45 citations in OpenAlex.

  1. Review
  2. The role of vitamin C on the skin.South African family practice : official journal of the South African Academy of Family Practice/Primary Care · 2025
    Review
  3. Article
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  16. Observational
  17. Article
  18. Role of Vitamin C in Skin Diseases.Frontiers in physiology · 2018
    Review
  19. Article
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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 4 institutions in 2 countries.

Kun Pyo KimDepartment of Medical Nutrition, Graduate School of East-West Medical Science, Kyung Hee University, Yongin 446-701, Republic of Korea.
Kyong-Oh ShinCollege of Pharmacy and MRC, Chungbuk National University, Cheongju 361-763, Republic of Korea.
Kyungho ParkDepartment of Dermatology, Northern California Institute for Research and Education (NCIRE)-VA Medical Center, University of California, San Francisco (UCSF), San Francisco, California 94158, USA.
Hye Jeong YunDepartment of Medical Nutrition, Graduate School of East-West Medical Science, Kyung Hee University, Yongin 446-701, Republic of Korea.
Shivtaj MannNova Southeastern College of Medicine, Fort Lauderdale, Florida 33314, USA.
Yong Moon LeeCollege of Pharmacy and MRC, Chungbuk National University, Cheongju 361-763, Republic of Korea.
Yunhi ChoDepartment of Medical Nutrition, Graduate School of East-West Medical Science, Kyung Hee University, Yongin 446-701, Republic of Korea.
Kyung Hee University · KRChungbuk National University · KRNorthern California Institute for Research and Education · USNova Southeastern University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Ceramide is the most abundant lipid in the epidermis and plays a critical role in maintaining epidermal barrier function. Overall ceramide content in keratinocyte increases in parallel with differentiation, which is initiated by supplementation of calcium and/or vitamin C. However, the role of metabolic enzymes responsible for ceramide generation in response to vitamin C is still unclear. Here, we investigated whether vitamin C alters epidermal ceramide content by regulating the expression and/or activity of its metabolic enzymes. When human keratinocytes were grown in 1.2 mM calcium with vitamin C (50 μg/ml) for 11 days, bulk ceramide content significantly increased in conjunction with terminal differentiation of keratinocytes as compared to vehicle controls (1.2 mM calcium alone). Synthesis of the ceramide fractions was enhanced by increased de novo ceramide synthesis pathway via serine palmitoyltransferase and ceramide synthase activations. Moreover, sphingosine-1-phosphate (S1P) hydrolysis pathway by action of S1P phosphatase was also stimulated by vitamin C supplementation, contributing, in part, to enhanced ceramide production. However, activity of sphingomyelinase, a hydrolase enzyme that converts sphingomyelin to ceramide, remained unaltered. Taken together, we demonstrate that vitamin C stimulates ceramide production in keratinocytes by modulating ceramide metabolic-related enzymes, and as a result, could improve overall epidermal barrier function.

Indexed as

CalciumCeramideCeramide metabolic enzymesEpidermal barrierKeratinocyte differentiationVitamin C

Identifiers

PMID26535077
PMCPMC4624068
OpenAlexW2122785887

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.