In addition to therapeutic options such as steroid ointment, immunosuppressive drug and ultraviolet phototherapy, recent reports have demonstrated the clinical efficacy of topical vitamin D3 for vitiligo vulgaris. How...In addition to therapeutic options such as steroid ointment, immunosuppressive drug and ultraviolet phototherapy, recent reports have demonstrated the clinical efficacy of topical vitamin D3 for vitiligo vulgaris. However, there seems to be little clinical effect of vitamin D3 without UV exposure. In the present study, we evaluated the clinical difference of sun irradiation vs. narrowband UVB in combination with tacalcitol assessing the change of lesion size and color tone by a spectrophotometer. Thirty-three vitiligo patients were composed of 19 treated with sun illumination and 14 treated with narrowband UVB in combination with topical use of tacalcitol. The mean % size reduction was higher in the group of sunbathing than narrowband UVB (29% vs. 23%). Delta L score, which represented the difference of whiteness between lesional and perilesional skin, was significantly improved after treatment in the group of sun irradiation instead of narrowband UVB (p = 0.0023). Therefore, we consider that sun illumination along with tacalcitol may be able to induce natural repigmentation and be an alternative therapeutic option for vitiligo vulgaris.展开更多
Solar ultraviolet B(UVB)radiation is a major skin cancer-causing agent.Initiation,promotion,and progression are the diverse phases of UVB-induced carcinogenesis.Exposure to UVB causes abnormalities in a series of bioc...Solar ultraviolet B(UVB)radiation is a major skin cancer-causing agent.Initiation,promotion,and progression are the diverse phases of UVB-induced carcinogenesis.Exposure to UVB causes abnormalities in a series of biochemical and molecular pathways:thymine dimer formation,DNA damage,oxidative stress,inflammatory responses,and altered cell signaling,eventually resulting in tumor formation.The increased skin cancer rates urge researchers to develop more efficient drugs,but synthetic chemotherapeutic drugs have more contrary effects and drug resistance issues,which have been reported recently.The current review focuses on the relationship between microbes and cancer.Human skin acts as a barrier against the external environment and serves as a protective shield for its inhabitant microbiota,collectively called skin microbes.The gut microbiome plays a vital role in cancer therapy.Production of short-chain fatty acids(SCFAs)such as butyrate,acetate,and propionate by intestinal microbes has anti-cancer properties against various cancer cell lines.Yet,the knowledge of SCFAs produced by skin microbes remains yet to be elucidated exhaustively.In this review,we strive to summarize the findings of studies performed to date regarding the anti-cancer properties of SCFA against various cancer cell lines and provide insight into future directions in the skin microbiome field.展开更多
[Objectives]Optimum extraction conditions of total flavonoids from Fructus Aurantii Immaturus(TFFAI)and its resistance activity to ultraviolet radiation were investigated in present research.[Methods]The optimal extra...[Objectives]Optimum extraction conditions of total flavonoids from Fructus Aurantii Immaturus(TFFAI)and its resistance activity to ultraviolet radiation were investigated in present research.[Methods]The optimal extraction conditions of TFFAI were determined by single factor and orthogonal experiments,and the survival rate of TFFAI on HaCaT cells irradiated with UVB rays was investigated.It s antioxidant capacity was determined by ABTS.[Results]The results showed that the highest yield of TFFAI was obtained with 70%ethanol at a solid-to-liquid ratio of 1:50(w/v)and 40℃for 1.5 h by single-factor and orthogonal experiments.Total flavonoids(0.25-1.00 mg/ml)could significantly improve the survival rate of HaCaT cell line.Meanwhile,the maximum absorption peak of TFFAI was found at 283 nm,and in-vitro antioxidant experiment identified that TFFAI had a good clearance rate to ABTS.It suggestes that TFFAI could protect the cells from UVB damage by absorption of UVB rays and anti-oxidation.[Conclusions]TFFAI played a protective role on UVB irradiated cells through UVB ultraviolet absorption and antioxidant pathways.展开更多
文摘In addition to therapeutic options such as steroid ointment, immunosuppressive drug and ultraviolet phototherapy, recent reports have demonstrated the clinical efficacy of topical vitamin D3 for vitiligo vulgaris. However, there seems to be little clinical effect of vitamin D3 without UV exposure. In the present study, we evaluated the clinical difference of sun irradiation vs. narrowband UVB in combination with tacalcitol assessing the change of lesion size and color tone by a spectrophotometer. Thirty-three vitiligo patients were composed of 19 treated with sun illumination and 14 treated with narrowband UVB in combination with topical use of tacalcitol. The mean % size reduction was higher in the group of sunbathing than narrowband UVB (29% vs. 23%). Delta L score, which represented the difference of whiteness between lesional and perilesional skin, was significantly improved after treatment in the group of sun irradiation instead of narrowband UVB (p = 0.0023). Therefore, we consider that sun illumination along with tacalcitol may be able to induce natural repigmentation and be an alternative therapeutic option for vitiligo vulgaris.
文摘Solar ultraviolet B(UVB)radiation is a major skin cancer-causing agent.Initiation,promotion,and progression are the diverse phases of UVB-induced carcinogenesis.Exposure to UVB causes abnormalities in a series of biochemical and molecular pathways:thymine dimer formation,DNA damage,oxidative stress,inflammatory responses,and altered cell signaling,eventually resulting in tumor formation.The increased skin cancer rates urge researchers to develop more efficient drugs,but synthetic chemotherapeutic drugs have more contrary effects and drug resistance issues,which have been reported recently.The current review focuses on the relationship between microbes and cancer.Human skin acts as a barrier against the external environment and serves as a protective shield for its inhabitant microbiota,collectively called skin microbes.The gut microbiome plays a vital role in cancer therapy.Production of short-chain fatty acids(SCFAs)such as butyrate,acetate,and propionate by intestinal microbes has anti-cancer properties against various cancer cell lines.Yet,the knowledge of SCFAs produced by skin microbes remains yet to be elucidated exhaustively.In this review,we strive to summarize the findings of studies performed to date regarding the anti-cancer properties of SCFA against various cancer cell lines and provide insight into future directions in the skin microbiome field.
基金Supported by National Key Program of Innovation and Entrepreneurship Training for College Students (202211834021)Project Funds of Zhengzhou Science and Technology Bureau (ZZSZX202109).
文摘[Objectives]Optimum extraction conditions of total flavonoids from Fructus Aurantii Immaturus(TFFAI)and its resistance activity to ultraviolet radiation were investigated in present research.[Methods]The optimal extraction conditions of TFFAI were determined by single factor and orthogonal experiments,and the survival rate of TFFAI on HaCaT cells irradiated with UVB rays was investigated.It s antioxidant capacity was determined by ABTS.[Results]The results showed that the highest yield of TFFAI was obtained with 70%ethanol at a solid-to-liquid ratio of 1:50(w/v)and 40℃for 1.5 h by single-factor and orthogonal experiments.Total flavonoids(0.25-1.00 mg/ml)could significantly improve the survival rate of HaCaT cell line.Meanwhile,the maximum absorption peak of TFFAI was found at 283 nm,and in-vitro antioxidant experiment identified that TFFAI had a good clearance rate to ABTS.It suggestes that TFFAI could protect the cells from UVB damage by absorption of UVB rays and anti-oxidation.[Conclusions]TFFAI played a protective role on UVB irradiated cells through UVB ultraviolet absorption and antioxidant pathways.
