Results 91 to 100 of about 2,331 (162)

Analysis of the Uptake of Hypericin by Candida albicans Yeast Cells Using Fluorescence Methods and Comparison of the Dynamics of This Process over Time

Pharmaceutics
Background: Hypericin is a natural photosensitizer with promising antifungal potential, but its uptake kinetics in Candida (C.) albicans are not well defined. Objective: To characterize the time-dependent uptake of hypericin by C. albicans in vitro using
Radosław Turski, Jakub Fiegler-Rudol, Hanna Hüpsch-Marzec, Dariusz Skaba, Rafał Wiench   +4 more
doaj   +1 more source

Excited-State Photophysics of Hypericin and Its Hexamethoxy Analog:  Intramolecular Proton Transfer as a Nonradiative Process in Hypericin [PDF]

, 1997
The excited-state photophysics of the light induced antiviral agent, hypericin, are compared with those of its methylated analog, hexamethoxyhypericin. This comparison is instructive in understanding both the ground- and the excited-state properties of ...
Kraus, George, Petrich, Jacob, English, D., Zhang, W.   +3 more
core  

Fluorescence spectra of complexes of hypericin with s2 metal cations

, 2015
The chlorides of s(2) metal cations including Sn2+, Sb3+, Bi3+ and Te4+ form complexes with hypericin as indicated by a blue shift of the absorption and fluorescence of hypericin.
Vogler, Arnd
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Light-Induced Acidification by the Antiviral Agent Hypericin [PDF]

, 1995
The naturally occurring polycyclic quinone hypericin possesses light-induced antiviral activity against the human immunodeficiency virus (HIV) and other closely related enveloped lentiviruses such as equine infectious anemia virus (EIAV).
Petrich, Jacob, McCloskey, M., Fehr, Michael   +2 more
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Hypericin is an inhibitor of proteasome function

, 2003
In der vorliegenden Arbeit wurden molekulare Wirkmechanismen von Hypericin, eines Inhaltsstoffes des Johanniskrautes, untersucht. Johanniskraut-Extrakte werden weitverbreitet als antidepressiv wirkende Substanz eingesetzt.
Scholber, Jutta Ursula
core  

Photosensitization is required for antiretroviral activity of hypericin [PDF]

, 1991
In a seminal series of papers, Meruelo and co-workers have described the potent antiretroviral effect of hypericin. Interestingly, hypericin was found to inhibit not only the production of infectious virus from chronically infected cells, but was also ...
Kraus, George, Carpenter, Susan, Tossberg, John   +2 more
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An innovative approach to prepare hypericin molecularly imprinted pearls using a “phyto-template”

, 2016
International audienceIn this paper, an innovative method that uses hypericin “phyto-template” molecules is being applied herein for the first time to produce molecularly imprinted polymer (MIP) pearls able to selectively retain hypericin from Hypericum ...
Ghiurea, Marius, Iordache, Tanța-Verona, Sârbu, Andrei, Branger, Catherine, Florea, Ana-Mihaela, Avramescu, Sorin, Hubca, Gheorghe   +6 more
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Contents of hypericin and pseudohypericin in five commercial products of St John's wort (Hypericum perforatum)

, 2014
Hypericin and pseudohypericin are the two major dianthrones of St John's wort (SJW, Hypericum perforatum) that are reported to have antidepressant and antiviral effects. In this study we used methanol extracts of five commercial SJW products to determine
Lin, S.M., Wang, Z.J., 胡淼琳, Hu, M.L.   +3 more
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Determination of Hypericin Content in Flowers and Leaves of Eight Hypericum Species

Journal of Medicinal Plants, 2008
Background: Hypericum genus is one of the most important medicinal plant that contains 17 species in Iran, three of them are endemic. Objective: In this research hypericin content of flowers and leaves of eight Hypericum specie was determined.
K Jaimand, MB Rezaee, V Mozaffrian, R Azadi, M Naderi Haji Bagher Kandy, S Meshkyzadeh, M Golipoor   +6 more
doaj  

Hypericin loaded liposomes for photodynamic therapy

, 2019
In dieser Arbeit wurde die Entwicklung von liposomalen Hypericinformulierungen und die Untersuchung der photodynamischen Aktivität derselben auf Bakterien und Tumorzellen dargestellt.
Plenagl, Nikola
core   +1 more source