scholarly journals Heat Treatment Improves UV Photoprotective Effects of Licorice in Human Dermal Fibroblasts

Processes ◽  
2021 ◽  
Vol 9 (6) ◽  
pp. 1040
Author(s):  
Jeong-Yong Park ◽  
Yun-Jeong Ji ◽  
Kyung Hye Seo ◽  
Ji Yeon Lee ◽  
Geum-Soog Kim ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Skin Aging ◽  
Dermal Fibroblasts ◽  
Ultraviolet B ◽  
Human Dermal Fibroblasts ◽  
Uvb Radiation ◽  
External Stimulation ◽  
Heat Treated ◽  
Licorice Extract ◽  
Anti Inflammatory

External stimulation of the skin by ultraviolet B (UVB) radiation induces oxidative stress or inflammation, causing skin aging and skin cancer. Glycyrrhiza uralensis (licorice) has been used as a medicinal plant for its antioxidant, anti-inflammatory, antiviral, antimicrobial, anticarcinogenic, and hepatoprotective properties. The present study analyzed the effects of thermal processing on the bioactivities of licorice. Heat-treated licorice (HL) extracts had better antioxidant and anti-inflammatory activities than nontreated licorice (NL) extract. HL extracts also had higher total phenol contents than NL extract. In particular, contents of isoliquiritigenin, an antioxidant and anti-inflammatory substance of licorice, increased in proportion to the skin-protection effects of HL extracts. Heat treatment increased the contents of phenolic compounds such as isoliquiritigenin in licorice extract, which improved the UV photoprotective effect of licorice in human dermal fibroblasts.

scholarly journals ETAS®50 Attenuates Ultraviolet-B-Induced Interleukin-6 Expression by Suppressing Akt Phosphorylation in Normal Human Dermal Fibroblasts

2018 ◽  
Vol 2018 ◽  
pp. 1-8 ◽  
Author(s):  
Ken Shirato ◽  
Tomoko Koda ◽  
Jun Takanari ◽  
Junetsu Ogasawara ◽  
Takuya Sakurai ◽  
...  
Keyword(s):  
P38 Mapk ◽  
Dermal Fibroblasts ◽  
Ultraviolet B ◽  
Asparagus Officinalis ◽  
Mrna Levels ◽  
Human Dermal Fibroblasts ◽  
Akt Phosphorylation ◽  
Normal Human ◽  
Anti Inflammatory ◽  
Normal Human Dermal Fibroblasts

We recently reported that ETAS 50, a standardized extract from theAsparagus officinalisstem, exerted anti-inflammatory effects on ultraviolet-B- (UV-B-) irradiated normal human dermal fibroblasts (NHDFs) by inhibiting nuclear factor-κB p65 nuclear import and the resulting interleukin-1β(IL-1β) expression. To further elucidate the antiphotoaging potency of ETAS 50, we examined the anti-inflammatory effects on UV-B-irradiated NHDFs by focusing on the stress-activated mitogen-activated protein kinase (MAPK) and Akt signaling pathways. NHDFs were treated with 1 mg/mL of ETAS 50 or dextrin (vehicle control) after UV-B irradiation (20 mJ/cm2) for different time periods. Phosphorylation levels of c-Jun N-terminal kinase (JNK), p38 MAPK, and Akt were analyzed by western blotting. IL-6 mRNA levels were analyzed by real-time polymerase chain reaction. UV-B-irradiated NHDFs showed increased phosphorylation levels of JNK, p38 MAPK, and Akt, as well as increased mRNA levels of IL-6. ETAS 50 treatment after UV-B irradiation suppressed the increased phosphorylation levels of Akt without affecting those of JNK and p38 MAPK. ETAS 50 as well as Akt inhibitor Perifosine repressed UV-B irradiation-induced IL-6 mRNA expression. These results suggest that ETAS 50 treatment represses UV-B irradiation-induced IL-6 expression by suppressing Akt phosphorylation. The present findings demonstrate the potential of ETAS 50 to prevent photoaging by attenuating UV-B irradiation-induced proinflammatory responses in skin fibroblasts.

scholarly journals Protective Effect of Spirulina-Derived C-Phycocyanin against Ultraviolet B-Induced Damage in HaCaT Cells

Medicina ◽  
2021 ◽  
Vol 57 (3) ◽  
pp. 273
Author(s):  
Young Ah Jang ◽  
Bo Ae Kim
Keyword(s):  
Antioxidant Defense System ◽  
Skin Aging ◽  
Ultraviolet B ◽  
Control Group ◽  
Hacat Cells ◽  
Uvb Radiation ◽  
Skin Damage ◽  
Blue Green Algae ◽  
Radiation Group ◽  
Skin Wrinkles

Background and objectives: Reactive oxygen species (ROS) overwhelm the antioxidant defense system, induce oxidative stress, and increase matrix metalloproteinase (MMP) expression, resulting in skin aging. Thus, preventing ultraviolet B (UVB)-induced skin damage can attenuate skin aging. Spirulina (a biomass of cyanobacteria, also called blue-green algae) is comprised of prokaryotes, whereas microalgae are eukaryotes and are rich in phycocyanin, a powerful antioxidant. Materials and Methods: Here, we investigated the photoprotective effects of spirulina-derived C-phycocyanin (C-PC) against UVB radiation using keratinocytes (HaCaT cells). Results: UVB radiation increased MMP-1 and MMP-9 expression but decreased involucrin, filaggrin, and loricrin expression. C-PC showed no toxicity at concentrations of 5–80 μg/mL in terms of HaCaT cell viability. UVB-irradiated HaCaT cells had a 50.8% survival rate, which increased to 80.3% with C-PC treatment. MMP expression increased with UVB treatment, whereas MMP-1 and MMP-9 concentrations decreased with C-PC treatment. UVB reduced involucrin, filaggrin, and loricrin expression in HaCaT cells, but 80 μg/mL C-PC increased their expression by >25%. In the UVB radiation group, dichlorofluorescin diacetate fluorescence intensity in HaCaT cells increased by 81.6% compared with that in the control group, whereas ROS production was reduced by 51.2% and 55.1% upon treatment with 40 and 80 μg/mL C-PC, respectively. Conclusions: C-PC might reduce or prevent skin aging by reducing UVB irradiation-induced skin wrinkles and free radicals.

Orobanche cernua Loefling Attenuates Ultraviolet B-mediated Photoaging in Human Dermal Fibroblasts

2018 ◽  
Vol 94 (4) ◽  
pp. 733-743 ◽  
Author(s):  
Wei Gao ◽  
Yu-shuai Wang ◽  
Zheng-yi Qu ◽  
Eunson Hwang ◽  
Hien T. T. Ngo ◽  
...  
Keyword(s):  
Dermal Fibroblasts ◽  
Ultraviolet B ◽  
Human Dermal Fibroblasts
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