Evidence map›Paper›PMID 31214276›Full record

ArticleOxidative medicine and cellular longevity2019

Intramelanocytic Acidification Plays a Role in the Antimelanogenic and Antioxidative Properties of Vitamin C and Its Derivatives.

Fang Miao, Meng-Yun Su, Shan Jiang, Long-Fei Luo, Ying Shi, Tie-Chi Lei

Open access · hybridAbstract read
In one paragraph

Article in Oxidative medicine and cellular longevity, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 1 pooled it
2.4field-weighted citation impact, top 12% 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

24 citing papers in PubMed, 1 synthesis or guideline pooled it, 41 citations in OpenAlex.

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  5. Clinical Applications of Vitamin C in Dermatology: A Systematic Review.The Journal of clinical and aesthetic dermatology · 2026
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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

6 authors at 1 institution in 1 country.

Fang MiaoDepartment of Dermatology, Renmin Hospital of Wuhan University, Wuhan 430060, China.ORCID 0000-0003-2006-3781
Meng-Yun SuDepartment of Dermatology, Renmin Hospital of Wuhan University, Wuhan 430060, China.
Shan JiangDepartment of Dermatology, Renmin Hospital of Wuhan University, Wuhan 430060, China.
Long-Fei LuoDepartment of Dermatology, Renmin Hospital of Wuhan University, Wuhan 430060, China.
Ying ShiDepartment of Dermatology, Renmin Hospital of Wuhan University, Wuhan 430060, China.ORCID 0000-0002-2280-6967
Tie-Chi LeiDepartment of Dermatology, Renmin Hospital of Wuhan University, Wuhan 430060, China.ORCID 0000-0003-2304-827X
Wuhan University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Although vitamin C (VC, L-ascorbic acid) has been widely used as a skin lightening agent for a long time, the mechanism by which it inhibits melanogenesis remains poorly understood. It is well-documented that the intramelanocytic pH is an important factor in regulating tyrosinase function and melanosome maturation. The activity of tyrosinase, the rate-limiting enzyme required for melanin synthesis, is generally minimal in an acidic environment. Given that VC is an acidic compound, we might speculate that the intracellular acidification of melanocytes induced by VC likely reduces melanin content through the suppression of tyrosinase activity. The results of this study reveal that treatment of melanocytes with VC or its derivatives, magnesium ascorbyl phosphate (MAP) and 3-O-ethyl-L-ascorbic acid (AAE), resulted in significant decreases in the tyrosinase activity and melanin content and in the levels of intracellular reactive oxygen species (ROS), indicating that VC and its derivatives possess antimelanogenic and antioxidative activities. Western blotting analysis indicated that VC, MAP, and AAE exert their antimelanogenic activity by inhibiting the tyrosinase activity rather than by downregulating the expression of melanogenic proteins such as tyrosinase, premelanosome protein 17 (Pmel17) and microphthalmia-associated transcription factor (MITF). Further, we found that the reduced tyrosinase activity of melanocytes treated with VC or its derivatives could be reactivated following intracellular neutralization induced by ammonium chloride (NH

Indexed as

AnimalsAntioxidantsAscorbic AcidCell DifferentiationCell LineCytoplasmHumansHydrogen-Ion ConcentrationMelaninsMelanocytesMelanosomesMiceMice, Inbred C57BLMonophenol MonooxygenaseSkin Lightening PreparationsSkin PigmentationAntioxidantsAscorbic AcidMelaninsMonophenol MonooxygenaseSkin Lightening PreparationsSlc23a2 protein, mouseSodium-Coupled Vitamin C Transporters

Identifiers

PMID31214276
PMCPMC6535878
OpenAlexW2944500354

What OpenQuestion holds

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Registered trials

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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.