Trichioromethanesulfonyl bromide can be used as a ielogen with tetrafluoroethylene andchlorotrifluoroethylene as monomers to give telomerized products CCl3(CF2CF2)n.Br and CCl3(CF2CFCl)nBrwithout an initiator
CCl_3SO_2Br used as a 'telogen' reacts with CH_2=CF_2 to give mainly the 'mono- adduct' CCl_3CH_2CF_2Br, together with very small amouats of CCl_3CF_2CH_2Br, CCl_2BrCH_2CF_2Br and the 'di-adduct...CCl_3SO_2Br used as a 'telogen' reacts with CH_2=CF_2 to give mainly the 'mono- adduct' CCl_3CH_2CF_2Br, together with very small amouats of CCl_3CF_2CH_2Br, CCl_2BrCH_2CF_2Br and the 'di-adduct' CCl_3(CH_2CF_2)_2Br. The result indicates that CCl_3SO_2Br can be used as an addendum in trichloromethyl-bromo-addition reactions to olefins.展开更多
Background/Aim: Telogen effluvium (TE) is a scalp disorder characterized by the thinning or shedding of hair resulting from the early entry of hair in the telogen phase. Nigella sativa (NS) is a dicotyledonous belongi...Background/Aim: Telogen effluvium (TE) is a scalp disorder characterized by the thinning or shedding of hair resulting from the early entry of hair in the telogen phase. Nigella sativa (NS) is a dicotyledonous belonging to the Ranunculacae family. It has been shown that its major constituent, tymoquinon (TQ), exerts anti-oxidant and anti-inflammatory effects by inhibiting pro-inflammatory mediators, such as cyclooxygenase and prostaglandin D2. The aim of this study is to evaluate the efficacy of NS essential oil as a potential treatment for TE, a pathology characterized by a significant inflammatory component. Study Design/Methods: Twenty patients affected by TE for this double-blind, placebo controlled and randomized study were enrolled. Ten of these patients were treated with a scalp lotion containing 0.5% NS, daily for 3 months, while the other ten patients were treated with placebo daily for 3 months. Videodermatoscopic analysis (Trichoscan Dermoscope Fotofinder?) and evaluation of three independent dermatologists were performed before treatment (T0), after 3 months of treatment (T3) and at the 6 months follow-up (T6). Results: The results showed a significant improvement in 70% of patients treated with NS. Videodermatoscopic analysis showed a significant increment of hair density and hair thickness in patients treated with NS. NS was also able to reduce the inflammation observed in the majority of patients affected by TE. Conclusions: The results of this study suggest that NS can be considered potentially useful for the treatment of TE.展开更多
<strong>Background:</strong> Androgenetic alopecia (AGA) is a most common condition of hair loss. Thus, the present study aimed to investigate the effect of Trichoxidil<sup>TM</sup>, a phytocom...<strong>Background:</strong> Androgenetic alopecia (AGA) is a most common condition of hair loss. Thus, the present study aimed to investigate the effect of Trichoxidil<sup>TM</sup>, a phytocomplex obtained from a blend of essential oils, in the treatment of hair loss caused by AGA. <strong>Methods:</strong> The CCD1072Sk cells were cultured for the 24-hour cell viability assessment and cytotoxicity of Trichoxidil<sup>TM</sup>. The expression of mRNA levels from KGF, IGF-1, and VEGF in fibroblasts was evaluated by RT-qPCR. Thirty-three volunteers, diagnosed with AGA, men and women, aged between 25 and 50 years, were divided into Control group, without treatment (n = 5);Trichosol<sup>TM</sup> vehicle group, without active (n = 5);Hydroalcoholic vehicle group, without active (n = 4);Trichosol<sup>TM</sup> vehicle group, with 2.5% minoxidil (n = 5);Hydroalcoholic vehicle group, with 2.5% minoxidil (n = 5);Trichosol<sup>TM</sup> group with 2.5% Trichoxidil<sup>TM</sup> (n = 5) and Hydroalcoholic vehicle group with 2.5% Trichoxidil<sup>TM</sup> (n = 4) to dermoscopic and histologic. <strong>Results:</strong> Fibroblasts exhibited higher proliferation when treated with higher concentrations of Trichoxidil<sup>TM</sup>. Trichoxidil<sup>TM</sup> significantly increased the expression of KGF, IGF-1, and VEGF mRNA in fibroblasts cells. Analysis of the capillary density showed that Trichoxidil<sup>TM</sup> associated with Trichosol<sup>TM</sup> vehicle, was the most effective association. In addition, it was observed an increased more effectively the percentage of anagen phase and reduction of the telogen when compared to other formulations. <strong>Conclusion:</strong> Trichoxidil<sup>TM</sup> promoted proliferative effects and positively modulated the expression of growth factors IGF-1, VEGF, and KGF, being a promising candidate for the treatment of hair loss caused by AGA.展开更多
文摘Trichioromethanesulfonyl bromide can be used as a ielogen with tetrafluoroethylene andchlorotrifluoroethylene as monomers to give telomerized products CCl3(CF2CF2)n.Br and CCl3(CF2CFCl)nBrwithout an initiator
文摘CCl_3SO_2Br used as a 'telogen' reacts with CH_2=CF_2 to give mainly the 'mono- adduct' CCl_3CH_2CF_2Br, together with very small amouats of CCl_3CF_2CH_2Br, CCl_2BrCH_2CF_2Br and the 'di-adduct' CCl_3(CH_2CF_2)_2Br. The result indicates that CCl_3SO_2Br can be used as an addendum in trichloromethyl-bromo-addition reactions to olefins.
文摘Background/Aim: Telogen effluvium (TE) is a scalp disorder characterized by the thinning or shedding of hair resulting from the early entry of hair in the telogen phase. Nigella sativa (NS) is a dicotyledonous belonging to the Ranunculacae family. It has been shown that its major constituent, tymoquinon (TQ), exerts anti-oxidant and anti-inflammatory effects by inhibiting pro-inflammatory mediators, such as cyclooxygenase and prostaglandin D2. The aim of this study is to evaluate the efficacy of NS essential oil as a potential treatment for TE, a pathology characterized by a significant inflammatory component. Study Design/Methods: Twenty patients affected by TE for this double-blind, placebo controlled and randomized study were enrolled. Ten of these patients were treated with a scalp lotion containing 0.5% NS, daily for 3 months, while the other ten patients were treated with placebo daily for 3 months. Videodermatoscopic analysis (Trichoscan Dermoscope Fotofinder?) and evaluation of three independent dermatologists were performed before treatment (T0), after 3 months of treatment (T3) and at the 6 months follow-up (T6). Results: The results showed a significant improvement in 70% of patients treated with NS. Videodermatoscopic analysis showed a significant increment of hair density and hair thickness in patients treated with NS. NS was also able to reduce the inflammation observed in the majority of patients affected by TE. Conclusions: The results of this study suggest that NS can be considered potentially useful for the treatment of TE.
文摘<strong>Background:</strong> Androgenetic alopecia (AGA) is a most common condition of hair loss. Thus, the present study aimed to investigate the effect of Trichoxidil<sup>TM</sup>, a phytocomplex obtained from a blend of essential oils, in the treatment of hair loss caused by AGA. <strong>Methods:</strong> The CCD1072Sk cells were cultured for the 24-hour cell viability assessment and cytotoxicity of Trichoxidil<sup>TM</sup>. The expression of mRNA levels from KGF, IGF-1, and VEGF in fibroblasts was evaluated by RT-qPCR. Thirty-three volunteers, diagnosed with AGA, men and women, aged between 25 and 50 years, were divided into Control group, without treatment (n = 5);Trichosol<sup>TM</sup> vehicle group, without active (n = 5);Hydroalcoholic vehicle group, without active (n = 4);Trichosol<sup>TM</sup> vehicle group, with 2.5% minoxidil (n = 5);Hydroalcoholic vehicle group, with 2.5% minoxidil (n = 5);Trichosol<sup>TM</sup> group with 2.5% Trichoxidil<sup>TM</sup> (n = 5) and Hydroalcoholic vehicle group with 2.5% Trichoxidil<sup>TM</sup> (n = 4) to dermoscopic and histologic. <strong>Results:</strong> Fibroblasts exhibited higher proliferation when treated with higher concentrations of Trichoxidil<sup>TM</sup>. Trichoxidil<sup>TM</sup> significantly increased the expression of KGF, IGF-1, and VEGF mRNA in fibroblasts cells. Analysis of the capillary density showed that Trichoxidil<sup>TM</sup> associated with Trichosol<sup>TM</sup> vehicle, was the most effective association. In addition, it was observed an increased more effectively the percentage of anagen phase and reduction of the telogen when compared to other formulations. <strong>Conclusion:</strong> Trichoxidil<sup>TM</sup> promoted proliferative effects and positively modulated the expression of growth factors IGF-1, VEGF, and KGF, being a promising candidate for the treatment of hair loss caused by AGA.
