scholarly journals Lactobacillus helveticus-Fermented Milk Whey Suppresses Melanin Production by Inhibiting Tyrosinase through Decreasing MITF Expression

Nutrients ◽  
2020 ◽  
Vol 12 (7) ◽  
pp. 2082
Author(s):  
Nobutomo Ikarashi ◽  
Natsuko Fukuda ◽  
Makiba Ochiai ◽  
Mami Sasaki ◽  
Risako Kon ◽  
...  
Keyword(s):  
Skin Barrier ◽  
Fermented Milk ◽  
Tyrosinase Activity ◽  
Lactobacillus Helveticus ◽  
Skin Barrier Function ◽  
Mrna Levels ◽  
Melanin Production ◽  
Milk Whey ◽  
Tyrosinase Gene ◽  
Mitf Expression

Whey obtained from milk fermented by the Lactobacillus helveticus CM4 strain (LHMW) has been shown to improve skin barrier function and increase skin-moisturizing factors. In this study, we investigated the effects of LHMW on melanin production to explore the additional impacts of LHMW on the skin. We treated mouse B16 melanoma cells with α-melanocyte-stimulating hormone (α-MSH) alone or simultaneously with LHMW and measured the amount of melanin. The amount of melanin in B16 cells treated with α-MSH significantly increased by 2-fold compared with that in control cells, and tyrosinase activity was also elevated. Moreover, treatment with LHMW significantly suppressed the increase in melanin content and elevation of tyrosinase activity due to α-MSH. LHMW also suppressed the α-MSH-induced increased expression of tyrosinase, tyrosinase-related protein 1 (TRP1), and dopachrome tautomerase (DCT) at the protein and mRNA levels. Furthermore, the mRNA and protein microphthalmia-associated transcription factor (MITF) expression levels were significantly increased with treatment with α-MSH alone, which were also suppressed by LHMW addition. LHMW suppression of melanin production is suggested to involve inhibition of the expression of the tyrosinase gene family by lowering the MITF expression level. LHMW may have promise as a material for cosmetics with expected clinical application in humans.

Consumption of functional fermented milk containing borage oil, green tea and vitamin E enhances skin barrier function

2008 ◽  
Vol 17 (8) ◽  
pp. 668-674 ◽  
Author(s):  
Florence Puch ◽  
Sandrine Samson-Villeger ◽  
Denis Guyonnet ◽  
Jean-Luc Blachon ◽  
Anthony Vincent Rawlings ◽  
...  
Keyword(s):  
Vitamin E ◽  
Green Tea ◽  
Barrier Function ◽  
Skin Barrier ◽  
Fermented Milk ◽  
Borage Oil ◽  
Skin Barrier Function

scholarly journals β-Glucogallin isolated from Fusidium coccineum and its enhancement of skin barrier effects

2020 ◽  
Vol 63 (1) ◽  
Author(s):  
Hyoung-Geun Kim ◽  
Ki Sun Kim ◽  
Minji Kim ◽  
Sang-Hwan Shin ◽  
Yeong-Geun Lee ◽  
...  
Keyword(s):  
Skin Diseases ◽  
Skin Barrier ◽  
Human Keratinocytes ◽  
Polar Fraction ◽  
Poly I:C ◽  
Interleukin 4 ◽  
Skin Barrier Function ◽  
Mrna Levels ◽  
Alcohol Extract ◽  
Barrier Effects

AbstractSoil has been used for treatment of wound and skin diseases and for cosmetic purposes. Fusidium coccineum (FC) SA-1FC (Ascomycota) is a fungus found in nature, and its by-products are present in humid soils with plant humus. This study investigates the medium of fermented FC as a covering for all skin problems, including dryness, inflammation, and wounds. A preliminary study revealed that an alcohol extract of FC had a skin-enhancing effect, and thin-layer chromatography revealed a major component in a non-polar fraction. Here we identify a major compound isolated from a non-polar fraction as β-glucogallin. The mRNA levels of filaggrin and HAS3 are upregulated by FC and β-glucogallin treatment in keratinocytes and immortalized human keratinocytes cells. In addition, FC and β-glucogallin exert anti-inflammatory effects by suppressing expression of interleukin-4/poly(I:C)-induced chemokines and inflammatory cytokines. In fibroblasts, Hs68 cells, FC and β-glucogallin stimulate cell migration. These results suggest that FC and β-glucogallin can enhance skin barrier function.

scholarly journals Elevation of Hyaluronan Synthase by Magnesium Supplementation Mediated through the Activation of GSK3 and CREB in Human Keratinocyte-Derived HaCaT Cells

2021 ◽  
Vol 23 (1) ◽  
pp. 71
Author(s):  
Kana Marunaka ◽  
Shokoku Shu ◽  
Mao Kobayashi ◽  
Makiko Goto ◽  
Yuji Katsuta ◽  
...  
Keyword(s):  
Glycogen Synthase ◽  
Skin Barrier ◽  
Hyaluronan Synthase ◽  
Skin Barrier Function ◽  
Transcriptional Level ◽  
Mrna Levels ◽  
Hacat Cells ◽  
Magnesium Supplementation ◽  
Human Keratinocyte ◽  
Mgcl2 Concentration

Skin barrier damage is present in the patients with hereditary disorders of the magnesium channel, but the molecular mechanism has not been fully understood. We found that the expressions of hyaluronan synthase (HAS), HAS2 and HAS3 are influenced by MgCl2 concentration in human keratinocyte-derived HaCaT cells. The exposure of cells to a high concentration (5.8 mM) of MgCl2 induced the elevation of HAS2/3 expression, which was inhibited by mRNA knockdown of nonimprinted in Prader-Willi/Angelman syndrome-like domain containing 4 (NIPAL4). Similarly, the content of hyaluronic acid (HA) was changed according to MgCl2 concentration and the expression of NIPAL4. The MgCl2 supplementation increased the reporter activities of HAS2/3, which were inhibited by NIPAL4 knockdown, indicating that the expressions of HAS2/3 are up-regulated at the transcriptional level. The reporter activities and mRNA levels of HAS2/3, and the production of HA were inhibited by CHIR-99021, a glycogen synthase kinase-3 (GSK3) inhibitor, and naphthol AS-E, a cyclic AMP-response element binding protein (CREB) inhibitor. Furthermore, the mutation in putative CREB-binding sites of promoter region in HAS2/3 genes inhibited the MgCl2 supplementation-induced elevation of promoter activity. Our results indicate that the expressions of HAS2/3 are up-regulated by MgCl2 supplementation in HaCaT cells mediated through the activation of GSK3 and CREB. Magnesium may play a pivotal role in maintaining the skin barrier function and magnesium supplementation may be useful to enhance moisturization and wound repair in the skin.

scholarly journals Cera Flava Alleviates Atopic Dermatitis by Activating Skin Barrier Function via Immune Regulation

2021 ◽  
Vol 22 (14) ◽  
pp. 7531
Author(s):  
Gunhyuk Park ◽  
Byeong Cheol Moon ◽  
Goya Choi ◽  
Hye-Sun Lim
Keyword(s):  
Immune Regulation ◽  
Barrier Function ◽  
Immunoglobulin E ◽  
Skin Barrier ◽  
Inflammatory Factors ◽  
Skin Barrier Function ◽  
Histopathological Analysis ◽  
Topical Steroids ◽  
Mrna Levels ◽  
Dorsal Skin

Cera Flava (CF), a natural extract obtained from beehives, is widely used in dermatological products owing to its wound healing, wrinkle reduction, UV-protective, and skin cell turnover stimulation effects. However, its effect on AD-like skin lesions is unknown. In this study, we used a mouse model of AD to evaluate the effects of CP at the molecular and phenotypic levels. Topical house dust mite (HDM) sensitization and challenge were performed on the dorsal skin of NC/Nga mice to induce AD-like cutaneous lesions, phenotypes, and immunologic responses. The topical application of CF for 6 weeks relieved HDM-induced AD-like phenotypes, as quantified by the dermatitis severity score, scratching frequency, and skin moisture. CP decreased immunoglobulin E, histamine, and thymic stromal lymphopoietin levels. Histopathological analysis showed that CF decreased epidermal thickening and the number of mast cells. CF attenuated HDM-induced changes in the expression of skin barrier-related proteins. Furthermore, CF decreased the mRNA levels of inflammatory factors, including interleukin (IL)-1β, IL-4, IL-13, IL-8, TARC, MDC, and RANTES, in dorsal skin tissue via the TLR2/MyD88/TRAF6/ERK pathway. CF influences skin barrier function and immune regulation to alleviate AD symptoms. It may therefore be an effective alternative to topical steroids for the treatment of AD.

NATURAL COSMETICS IN THE CARE OF YOUNG CHILDREN

2020 ◽  
Vol 99 (6) ◽  
pp. 155-162
Author(s):  
O.B. Tamrazova ◽  
◽  
S.P. Seleznev ◽  
A.V. Tamrazova ◽  
◽  
...  
Keyword(s):  
Skin Barrier ◽  
Structural Features ◽  
Transepidermal Water Loss ◽  
General Information ◽  
Skin Barrier Function ◽  
Skin Physiology ◽  
Main Emphasis ◽  
Antimicrobial Protection ◽  
Irritant Dermatitis ◽  
Adaptive Shifts

The article provides general information about the skin physiology of newborns and infants. Structural features of the skin and main adaptive shifts in newborns, are described. Тhe child has an increase in the skin barrier function of the skin, which prevents transepidermal water loss; active synthesis of natural moisturizing factor (NMF) components that control skin hydration; shift of pH to acidic environment; normalization of thermoregulatory functions; enhancement of the photoprotective function; immune restructuring for antimicrobial protection; formation of a normal microbiome. The article describes the consequences of improper skin care of a newborn, using the example of diaper dermatitis, irritant dermatitis, prickly heat and vesiculopustulosis. The importance of using specialized children's cosmetics in caring for an infant is assessed. The basic recommendations for the choice of these products are presented, where the main emphasis is on the choice of products consisting of natural ingredients. Giving preference to natural cosmetics, everyone should carefully study the composition of these products and trust the manufacturers who can guarantee safety of care products for the youngest children.

scholarly journals Inhibitory Effects of Cycloheterophyllin on Melanin Synthesis

Molecules ◽  
2021 ◽  
Vol 26 (9) ◽  
pp. 2526
Author(s):  
Joong-Hyun Shim
Keyword(s):  
Functional Materials ◽  
Tyrosinase Activity ◽  
Melanin Synthesis ◽  
Activity Assay ◽  
Inhibitory Effects ◽  
Melanin Production ◽  
Messenger Ribonucleic Acid ◽  
B16f10 Cells ◽  
Cell Line Cell ◽  
Tyrosinase Related Protein

This study was performed to clarify the inhibitory effects of cycloheterophyllin on melanin synthesis. In order to elucidate the inhibitory effects of cycloheterophyllin on the B16F10 cell line, cell viability, messenger ribonucleic acid (mRNA) expressions, tyrosinase activity assay, and melanin production assay were measured. The effects of cycloheterophyllin on tyrosinase-related protein 1 (TYRP1)/TYRP2/tyrosinase (TYR)/microphthalmia-associated transcription factor (MITF) mRNA expressions and melanin content were determined. Quantitative real-time RT-PCR showed that cycloheterophyllin decreased the mRNA expression level of TYRP1/TYRP2/TYR/MITF genes and melanin production contents than α-MSH-treated B16F10 cells. The tyrosinase activity assay revealed that cycloheterophyllin decreased the melanin production in the B16F10 cells. These data show that cycloheterophyllin increases the whitening effects in the B16F10 cells; thus, cycloheterophyllin is a potent ingredient for skin whitening. Thus, further research on the mechanism of action of cycloheterophyllin for the development of functional materials should be investigated.

scholarly journals Biocompatibility and radioprotection by newly characterized melanin pigment and its production from Dietzia schimae NM3 in optimized whey medium by response surface methodology

2021 ◽  
Vol 71 (1) ◽  
Author(s):  
Sahar Eskandari ◽  
Zahra Etemadifar
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Nutrient Broth ◽  
Tyrosinase Activity ◽  
Brown Pigment ◽  
Scavenging Activity ◽  
Protection Factor ◽  
Melanin Production

Abstract Purpose To characterize and optimize the productivity of melanin using an extremotolerant actinobacterium, Dietzia schimae NM3, for the first time. Methods An extracellular brown pigment produced by D. schimae NM3 in the nutrient broth and cheese whey medium by adding L-tyrosine. The extracted melanin was analyzed by UV-visible, HPLC, and FTIR assays. The radical scavenging activity (by DPPH) and sun protection factor (SPF) of the extracted melanin were measured. The melanin cytotoxicity was assayed by MTT and chromate biosorption was measured by atomic absorption spectroscopy. Finally, melanin production by D. schimae NM3 was optimized by response surface methodology (RSM) using Box-Behnken design in the whey medium. Result The purified melanin showed similar peak to the standard melanin (SIGMA) at 3.5 min in HPLC, and C=O bands, NH2, CH, C-N, and aromatic groups by FTIR. The radical scavenging activity (by DPPH) and SPF of the extracted melanin were obtained 188.9% and 20.22, respectively. Using MTT assay, the melanin revealed non-toxic effect on the normal human fibroblast (HFB) cell culture. The melanin yield 790 mg l−1, and tyrosinase activity 3400 U ml−1 were obtained in the medium contained whey powder [5% (w v−1)], L-tyrosine 2.5 g l−1, CuSO4 0.013 g l−1, and pH 10.5, incubated at 32 °C for 3 days. The ANOVA results indicated significant P-value, model F-value, and probability, with insignificant lack of fit. After optimization with mono-factors, the nutrient broth came up with melanin yield as 1.2 g l−1 and tyrosinase activity as 4040 U ml−1. Conclusion This is the first report of melanin production by D. schimae NM3 and this natural melanin showed valuable biological properties such as high antioxidant activity and radioprotection (SPF) and the biocompatibility to human cell line.

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