Recent Advances Regarding Constituents and Bioactivities of Plants from the Genus Hypericum

Abstract

I present a literature survey of the currently available Doppler images of cool stars. The 65 individual stars with Doppler images consist of 29 single stars and 36 components in close binaries. Out of the total, 31 were observed only once but 12 stars are (or were) being monitored for years. Each image for each star is identified with the time when it was observed, whether photometry was used in the imaging, the inclination of the stellar rotation axis, the v sin i, the stellar rotation period, and whether a polar spot and/or a high‐latitude or low‐latitude spot was seen. The type of variable star and its M‐K spectral classification is also listed to identify the evolutionary status. The sample consists of 3 classical T Tauri stars, 8 weak‐lined T Tauri's, 27 main‐sequence stars, 9 subgiants, and 18 giants. The total number of Doppler images is 245 as of June 2002.

Integration of in vitro and in silico perspectives to explain chemical characterization, biological potential and anticancer effects of Hypericum salsugineum: A pharmacologically active source for functional drug formulations

“…Hypericum species are one of the most intensely studied groups in the research area of drug design and discovery of natural products for their effective pharmacological contents [ 57 ]. Many different Hypericum species’ anti-neoplastic effects have been reported in various cancer types, and specific phytochemical libraries were generated for new drug formulations [ 58 – 63 ]. In this study, anti-neoplastic effects of H .…”

Antimicrobial Photoinactivation Using Visible Light Plus Water-Filtered Infrared-A (VIS + wIRA) and Hypericum Perforatum Modifies In Situ Oral Biofilms

“…In contrast to conventional photosensitizing agents such as TB, ICG, MB and Ce6, the high anti-bacterial efficiency of H. perforatum extract cannot be attributed to mechanisms involving only one specific pure substance. Interestingly, synergetic interactions between three main constituents – namely hypericin, pseudohyperin and hyperforin – are responsible for the high antimicrobial potential of H. perforatum 26,27,71,72 . Nevertheless, their exact mechanism of action remains unknown 26,27 .…”

Diverse Polyphenols from Hypericum faberi

“…comprises nearly 500 species and is subdivided into 36 taxonomic sections [1]. The plants of this genus have been proved to be rich sources of prenylated phenolic metabolites with diverse phloroglucinols, xanthones, and flavonoids structures as well as valuable bioactivities such as antidepressant, antibacterial, and antiproliferative activities [2–4]. Our group has been engaged in the systematic studies of isoprenylated polyphenols from Hypericum species for more than ten years, and has discovered a series of fascinating chemical structures with intriguing biological activities [5–15].…”