Results 151 to 160 of about 4,551 (194)

A TD-DFT Study on the Photo-Physicochemical Properties of Chrysophanol from Rheum [PDF]

International Journal of Molecular Sciences, 2009
As a naturally occurring anthraquinone pigment, chrysophanol (MHAQ) has attracted considerable attention in recent years owing to its efficient photosensitivity under the solar spectrum. Considering the successful use of time-dependent density functional theory (TD-DFT) in investigating the photo-physicochemical behaviors of dyes and pigments, we ...
Xue Zhao, Dezhan Chen, Zhi-Qiang Shi
exaly   +3 more sources

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Electrochemical determination of chrysophanol based on the enhancement effect of acetylene black nanoparticles

Colloids and Surfaces B: Biointerfaces, 2013
Acetylene black (AB) nanoparticles were readily dispersed into water in the presence of dihexadecyl hydrogen phosphate. After evaporation of water, the surface of glassy carbon electrode (GCE) was coated with AB nanoparticles as confirmed from the scanning electron microscopy measurements.
Chidan Wan, Kangbing Wu
exaly   +3 more sources

Neuroprotective effect of chrysophanol in Alzheimer disease via modulating the Ca2+/EGFR-PLCγ pathway.

Neuroscience Letters
Chrysophanol (CHR) is an anthraquinone compound found in rhubarb, and it possesses neuroprotective properties. The purpose of this study was to gain a better understanding of its role in Alzheimer's disease (AD).
Wei Huang, Qian Chen, Peng Zhou, Shu Ye, Zheng-Qing Fang   +4 more
semanticscholar   +1 more source

Molecular mechanism underlying coencapsulating chrysophanol and hesperidin in octenylsuccinated β-glucan aggregates for improving their corelease and bioaccessibility.

International Journal of Biological Macromolecules
Chrysophanol and hesperidin are natural nutraceuticals that exhibit synergistic bioactivities, but their hydrophobicity limits their applications, and it is unclear whether coencapsulation can improve their solubility and release behaviors. The objective
Zhen Wu, Hong Li, Shen Li, Gang Chen, Xin Tang, Simei Liu, Yongde Wang   +6 more
semanticscholar   +1 more source

A proton-activatable aminated-chrysophanol sensitizer for photodynamic therapy

Dyes and Pigments, 2017
Abstract Exploiting the tumor microenvironment provides a new strategy for cancer treatment. In order to develop the microenvironment-selective photosensitiser, we rationally designed a proton-activatable aminated-chrysophanol derivative-compound 3, which combines fluorescence and reactive oxygen species regulated by the tumor acidic microenvironment
Yana Bian, Mingle Li, Jiangli Fan, Jianjun Du, Saran Long, Xiaojun Peng   +5 more
openaire   +1 more source

Chrysophanol‐Loaded Composites with Xanthan Gum/Polycaprolactone for Drug Release Enhancement

ChemistrySelect
This work focused on synthesizing novel chrysophanol‐loaded composites with varied ratios of polycaprolactone/xanthan gum to enhance the release of chrysophanol.
Le Thi Thu Vu, Chinh Thuy Nguyen, My Tra Duong, Thang Dinh Tran, Trang Thi Huyen Pham, Mai Thi Tran, Lien Thi Ngoc Ly, H. Thai   +7 more
semanticscholar   +1 more source

[Determination of chrysophanol in semen Cassiae by HPLC].

Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica, 2000
A HPLC method for the determination of chrysophanol in Semen Cassiae was investigated. The result showed that this method was simple, specific and accurate. The recovery was 99.0% and relative standard deviation was 1.8%. The method is useful for the quality control of this medicinal meaterial.
A, Cao, M, Sha, S, Meng, L, Jiang, Z, Zhang   +4 more
openaire   +1 more source

ChemInform Abstract: BIOGENETIC‐TYPE SYNTHESES OF EMODIN AND CHRYSOPHANOL

Chemischer Informationsdienst, 1976
AbstractDie Diester (Ia) [erhältlich durch Ketalisierung der entsprechenden Oxoverbindung] bzw. (Ib) [erhältlich aus dem Gluconat (IX) und Pyrrolidin (X)] werden mit der Dilithioverbindung (II) über die Stufen (III) und (IV) in die cyclisierten Produkte (V) übergeführt, deren weitere Cyclisierung die Verbindungen (VI) liefert.
T. M. HARRIS, A. D. WEBB, C. M. HARRIS, P. J. WITTEK, T. P. MURRAY   +4 more
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Chrysophanol anthrone: a theoretical study on the potential energy surface

Molecular Simulation, 2016
AbstractThe potential energy surface (PES) of chrysophanol anthrone, the active component of Goa Powder, was systematically explored and thoroughly scrutinised via density functional theory, in order to gain an understanding of its physicochemical properties. In particular, we focused on the rotations of the two hydroxyl-phenyl dihedral angles.
Fernando J. Tun-Rosado, Gonzalo J. Mena-Rejón, Rubén M. Carballo, Gumersindo Mirón-López, Ramiro F. Quijano-Quiñones   +4 more
openaire   +1 more source

Chrysophanol inhibits endoplasmic reticulum stress in cerebral ischemia and reperfusion mice

European Journal of Pharmacology, 2018
Endoplasmic reticulum (ER) stress plays a critical role in mediating ischemia/reperfusion (I/R) damage in the brain. Our previous study showed that Chrysophanol (CHR) alleviated cerebral ischemic injury in mice and nuclear factor-κB (NF-κB) involved in its neuroprotective effect, but the precise mechanism remains not fully understood. The present study
Yongmei, Zhao, Yalan, Fang, Haiping, Zhao, Jincheng, Li, Yunxia, Duan, Wenjuan, Shi, Yuyou, Huang, Li, Gao, Yumin, Luo   +8 more
openaire   +2 more sources