• Title, Summary, Keyword: melanin

Search Result 940, Processing Time 0.034 seconds

Effect of Ethanolic Extracts Mixed with Grains and Fallopia multiflora on Melanogenesis (곡물과 적하수오를 혼합한 에탄올 추출물이 멜라닌 합성에 미치는 영향)

  • Lee, Eunbeen;Kim, Moon-Moo
    • Journal of Life Science
    • /
    • v.29 no.4
    • /
    • pp.461-469
    • /
    • 2019
  • The aim of this study was to investigate the effect of a mixture of ethanol extracts of Black oryzasativa, Sesamum indicum, Oryza sativa, Rhynchosia Nulubilis, and Polygoni multiflori radix (MIXEE) on melanogenesis to develop a natural product for black hair growth. An accumulation of hydrogen peroxide ($H_2O_2$) in hair follicles, which reduces melanin synthesis, is responsible for hair graying. In the present study, MIXEE showed scavenging activity against DPPH radicals and reducing power. In addition, it reduced the cellular $H_2O_2$ level, indicating that it could inhibit oxidation and promote melanin synthesis, which was decreased by $H_2O_2$. On the other hand, it did not affect tyrosinase activity in vitro but promoted the turnover of L-DOPA into melanin. MIXEE promoted melanin synthesis at the cellular level in B16F1 cells. Furthermore, MIXEE increased the expression levels of superoxide dismutase 2 (SOD2) and SOD3 in western blot analysis. In addition, MIXEE increased the expression levels of tyrosinase-related protein (TRP)-2, which promoted melanin synthesis from L-DOPA. The results suggested that MIXEE could promote melanogenesis. Therefore, MIXEE may have potential as a natural product for promotion of melanin production and reversal of gray hair to black hair.

Ethanolic Extract of Oryza sativa Displays Antioxidative Activity and Promotes Melanin Synthesis (현미 주정 추출물의 항산화 활성 및 melanin 합성 촉진 효과)

  • Jeon, Sojeong;Kim, Moon-Moo
    • Journal of Life Science
    • /
    • v.28 no.8
    • /
    • pp.908-916
    • /
    • 2018
  • Hair loses melanin with aging, which leads to hair graying. The change in hair color is caused by a reduction in tyrosinase activity and an accumulation of hydrogen peroxide ($H_2O_2$) in hair follicles. The purpose of this study was to investigate the effect of ethanolic extract of Oryza sativa (OREE) on melanin production and antioxidative activity in B16F1 cells. In this study, OREE showed low DPPH radical scavenging activity and reducing power. However, it displayed a strong antioxidative effect against intracellular $H_2O_2$ in live cells. OREE did not inhibit DOPA oxidation activity in vitro, but it increased tyrosinase activity at a concentration of $64{\mu}g/ml$. OREE at a concentration higher than $32{\mu}g/ml$ showed cell toxicity in B16F1 cells. However, OREE at a concentration higher than $8{\mu}g/ml$ not only increased melanin synthesis in a dose-dependent manner in B16F1 cells but also increased melanin synthesis in cells treated with $H_2O_2$ inhibiting melanin synthesis. To confirm the effect of OREE on melanin production, Western blot analysis was performed. The results revealed that OREE increased the expression levels of tyrosine hydroxylase and tyrosinase-related protein-2 (TRP-2) involved in melanin production in the $H_2O_2$-treated cells in which melanin production was inhibited. The findings suggest that OREE could improve melanin synthesis and be available for development of hair cosmetics aimed at improving melanin production.

Promotive Effect of Polygonum multiflorum radix Ethanol Extract on Melanogenesis (적하수오 에탄올 추출물의 melanin 합성 촉진효과)

  • Kim, Hyejeong;Kim, Moon-Moo
    • Journal of Life Science
    • /
    • v.27 no.4
    • /
    • pp.423-429
    • /
    • 2017
  • Hair color is determined by kind and amount of melanin. Melanocyte mainly synthesizes melanin from L-tyrosine by stimulation of ultra violet. Reactive oxygen species (ROS) play an important role in greying hair. Polygonum multiflorum radix has been reported to inhibit the aging process that black color of hair is turned into grey color. The aim of this study is to investigate the effect of Polygoni multiflorium radix ethanol extract (PMEE) on melanin synthesis related to black hair growth. In anti-oxidant experiment, PMEE decreased DPPH radical and increased reducing power, indicating that PMEE could eliminate ROS involved in greying hair. PMEE decreased cell viability in a dose-dependent manner. Furthermore, the effect of PMEE on the production of melanin was determined by DOPA assay and tyrosinase activity. PMEE increased tyrosinase activity and promoted melanin synthesis. In addition, the expression levels of tyrosinase, tyrosinase related protein-1 (TRP-1), tyrosinase related protein-2 (TRP-2) and microphthalmia-associated transcription factor (MITF), as well as anti-oxidant enzymes such as superoxide dismutase (SOD-3) and catalase were examined using western blot analysis. The expression levels of SOD-3 and catalase were decreased due to the enhanced antioxidant activity of PMEE. In particular, PMEE increased the expression levels of tyrosinase and TRP-2. These results suggest that PMEE could promote melanin synthesis that involved in tuning gray hair into black hair.

Melanin extract from Gallus gallus domesticus promotes proliferation and differentiation of osteoblastic MG-63 cells via bone morphogenetic protein-2 signaling

  • Yoo, Han-Seok;Chung, Kang-Hyun;Lee, Kwon-Jai;Kim, Dong-Hee;An, Jeung Hee
    • Nutrition Research and Practice
    • /
    • v.11 no.3
    • /
    • pp.190-197
    • /
    • 2017
  • BACKGROUND/OBJECTIVES: Gallus gallus domesticus (GD) is a natural mutant breed of chicken in Korea with an atypical characterization of melanin in its tissue. This study investigated the effects of melanin extracts of GD on osteoblast differentiation and inhibition of osteoclast formation. MATERIALS/METHODS: The effects of the melanin extract of GD on human osteoblast MG-63 cell differentiation were examined by evaluating cell viability, osteoblast differentiation, and expression of osteoblast-specific transcription factors such as bone morphogenetic protein 2 (BMP-2), small mothers against decapentaplegic homologs 5 (SMAD5), runt-related transcription factor 2 (RUNX2), osteocalcin and type 1 collagen (COL-1) by reverse transcription-polymerase chain reaction and western blotting analysis. We investigated the inhibitory effect of melanin on the osteoclasts formation through tartrate-resistant acid phosphatase (TRAP) activity and TRAP stains in Raw 264.7 cell. RESULTS: The melanin extract of GD was not cytotoxic to MG-63 cells at concentrations of $50-250{\mu}g/mL$. Alkaline phosphatase (ALP) activity and bone mineralization of melanin extract-treated cells increased in a dose-dependent manner from 50 to $250{\mu}g/mL$ and were 149% and 129% at $250{\mu}g/mL$ concentration, respectively (P < 0.05). The levels of BMP-2, osteocalcin, and COL-1 gene expression were significantly upregulated by 1.72-, 4.44-, and 2.12-fold in melanin-treated cells than in the control cells (P < 0.05). The levels of RUNX2 and SMAD5 proteins were higher in melanin-treated cells than in control vehicle-treated cells. The melanin extract attenuated the formation of receptor activator of nuclear factor kappa-B ligand-induced TRAP-positive multinucleated RAW 264.7 cells by 22%, and was 77% cytotoxic to RAW 264.7 macrophages at a concentration of $500{\mu}g/mL$. CONCLUSIONS: This study provides evidence that the melanin extract promoted osteoblast differentiation by activating BMP/SMADs/RUNX2 signaling and regulating transcription of osteogenic genes such as ALP, type I collagen, and osteocalcin. These results suggest that the effective osteoblastic differentiation induced by melanin extract from GD makes it potentially useful in maintaining bone health.

Inhibitory Effects of Ethanol Extract of Atractylodis Rhizoma alba on Melanin Biosynthesis (백출의 에탄올 추출물에 의한 Melanin 생성억제 효과)

  • 천현자;최은영;윤성찬;남항우;백승화
    • YAKHAK HOEJI
    • /
    • v.45 no.3
    • /
    • pp.269-275
    • /
    • 2001
  • The inhibitory effect of extract of Atractylodis Rhizoma alba on melanin biogenesis was studied by using B16/F10 melanoma in culture. Atractylodis Rhizoma alba significantly inhibited tyrosinase activity, and melanin contents with or without $\alpha$-MSH and forskolin in vitro. Melanin contents and tyro-sinase activity have decreased in a dose-dependent manner. These results show that extract of Atractylodis Rhizoma alba could be developed as skin whitening components of cosmetics.

  • PDF

Effects of Citrus Essential Oils on Melanin Production in B16 Melanoma Cells (B16 Melanoma 세포에서 Citrus Essential Oil이 Melanin 생성에 미치는 영향)

  • 임혜원;조남영;윤미연;차상복;김경원;박영미;이지윤;이진희;김창종
    • YAKHAK HOEJI
    • /
    • v.47 no.1
    • /
    • pp.25-30
    • /
    • 2003
  • This study is performed to investigate the effects of citrus essential oils on melanin production in B16 melanoma cells. Five kinds of citrus essential oils (Bergamot, Grapefruit, Lemon, Mandarin, Petigrain) did not have any influence on DPPH radical scavenger activity, cell growth and cytotoxicity in B16 melanoma cells. Both mandarin and petigrain essential oils dose-dependently inhibited purified tyrosinase activity, but bergamot did not. In 1$\mu$M MSH-stimulated B16 melanoma cells, all of 5 citrus essential oils inhibited melanin production in a dose dependent manner. From the above results, it is possible that citrus essential oils may be developed to be an anti-melanogenesis agent on the basis of their inhibitory effect on MSH-induced melanin production.

The effects of Hominis Placenta extract on Melanin synthesis of B16 melanoma cells (자하거(紫何車) 약침액(藥針液)이 B16 melanoma 세포주의 멜라닌 합성에 미치는 영향)

  • Seo, Hyung-Sik
    • Journal of Pharmacopuncture
    • /
    • v.9 no.1
    • /
    • pp.75-82
    • /
    • 2006
  • Objective : This research was carried out for the development of medicine for vitiligo treatment and focused on the effect of Hominis Placenta extract on Melanin synthesis of B16 melanoma cells. Methods : Acitivity of tyrosinase playing a vital role in synthesis of Melanin and the quantity of Melanin, which is the final product in cultured B16 melanoma cells, effects of Hominis Placenta extract were measured. Results: The results indicated that Hominis Placenta extract increased both the amount of Melanin and the activity of tyrosinase according to the concentration, and they also supported by western blot analysis. Conclusion : The results suggests that Hominis Placenta extract has an advantageous effect on the promotion of Melanin synthesis and will contribute to the development of vitiligo treatment through further related studies.

Vat dyeing of Wool and Cotton fabrics with Sepia Melanin

  • Kim, Su-Jin;Jang, Jin-Ho
    • Textile Coloration and Finishing
    • /
    • v.22 no.2
    • /
    • pp.88-93
    • /
    • 2010
  • Using extracted sepia melanin powder by repeated treatments with aqueous sodium hydroxide and acetic acid solutions, vat dyeing of wool and cotton fabrics was carried out under various dyeing conditions including concentration of melanin, alkali, reducing agent and salt, as well as dyeing time and temperature. A K/S of 25.3 for wool fabrics was obtained at the optimal dyeing condition with 9% owf melanin, 0.5g/L NaOH and 56g/L $Na_2S_2O_4$ without salt at $80^{\circ}C$ for 90minutes. The vat dyeing of sepia melanin was applicable to both cotton and wool fabrics but the wool showed higher dyeability. The color fastness properties of the dyed wool and cotton fabrics were excellent to washing, rubbing and light irradiation.

Inhibitory Effects of Water-Acetone Extracts of Chestnut inner shell, Pine needle and Hop on The Melanin Biosynthesis (율피.솔잎.호프의 수성 아세톤 추출물에 의한 Melanin 생성 억제 효과)

  • 양민진;김명길;임세진;안형수;안령미
    • YAKHAK HOEJI
    • /
    • v.43 no.4
    • /
    • pp.494-501
    • /
    • 1999
  • The skin whitening effects of pine needle extract, hop extract and chestnut inner shell extract were evaluated both in vitro and in B 16 mouse melanoma cell lines. Each extracts significantly inhibited tyrosinase activity, dopa auto-oxidation and melanin biosynthesis in vitro and in B 16 cell lines. In vitro, hop extract inhibited melanin biosynthesis 15 times stronger than kojic acid at $10{\;}\mu\textrm{g}/ml$ concentration. Each extracts were stronger inhibitors of melanin biosynthesis than kojic acid in B 16 mouse melanoma cell at less than $4{\;}\mu\textrm{g}/ml$ concentration. These results show that extracts fo pine needle, hop and chestnut inner shell could be developed as skin whitening component of cosmetics.

  • PDF

Decolorization of Melanin by Lignin Peroxidase from Phanerochaete chrysosporium

  • Woo, Sung-Hwan;Cho, Jeung-Suk;Lee, Baek-Seok;Kim, Eun-Ki
    • Biotechnology and Bioprocess Engineering:BBE
    • /
    • v.9 no.4
    • /
    • pp.256-260
    • /
    • 2004
  • Melanin was decolorized by lignin peroxidase from Phanerochaete chrysosporium. This decolorization reaction showed a Michaelis-Mentens type relationship between the decolorization rate and concentration of two substrates: melanin and hydrogen peroxide. Kinetic constants of the decolorization reaction were 0.1 OD$\sub$475//min ($V_{max}$) and 99.7 mg/L ($K_{m}$) for melanin and 0.08 OD$\sub$475//min ($V_{max}$) and 504.9 ${\mu}$M ($K_{m}$) for hydrogen peroxide, respectively. Depletion of hydrogen peroxide interrupted the decolorization reaction, indicating the essential requirement of hydrogen peroxide. Pulsewise feeding of hydrogen peroxide continued the decolorizing reaction catalyzed by lignin peroxidase. These results indicate that enzymatic decolorization of melanin has applications in the development of new cosmetic whitening agents.