Results 81 to 90 of about 3,607 (204)

Chemical Composition and Bioactivities of the Marine Alga from Taiwan

Natural Product Communications, 2010
The present study investigated the chemical composition of Isochrysis galbana Parke, a marine microalga which is widely used as a feedstock in aquaculture. From gas chromatography/mass spectrometric analysis the mono-sugar compositions of I. galbana were
Chi-Cheng Yu, Hsiao-Wei Chen, Mao-Jing Chen, Yu-Ching Chang, Shih-Chang Chien, Yueh-Hsiung Kuo, Feng-Ling Yang, Shih-Hsiung Wu, Jie Chen, Hsiao-Hui Yu, Louis Kuop-Ping Chao   +10 more
doaj   +1 more source

Inactivation of Mitochondrial Electron Transport by Photosensitization of a Pheophorbide a Derivative

Molecules and Cells, 2004
We examined the damage to mitochondrial electron transport caused by photosensitization of a pheophorbide a derivative, DH-I-180-3, shown recently to induce necrosis of lung carcinoma cells with low dark toxicity. Confocal microscopy showed that DH-I-180-3 co-localized with dihydrorhodamine-123 suggesting that it mainly accumulates in mitochondria. The
Chang Su, Kim, Chang-Hee, Lee, Phil Ho, Lee, Sanghwa, Han   +3 more
openaire   +2 more sources

Photomediated Larvicidal Activity of Pheophorbide a against Cercaria Larvae of Fasciola gigantica

, 2020
Fasciolosis is a parasitic disease caused by Fasciola gigantica. The freshwater snail Lymnaea acuminata is the intermediate host of F. gigantica which cause endemic fasciolosis in the northern part of India. To investigate larvicidal activity of pure and
Jyoti Divya, Vinay Kumar Singh, Singh, D K Singh   +3 more
core  

Evaluation of 99m Tc-Pheophorbide-a use in infection imaging: A rat model

, 2011
This study aims to prepare (99m)Technetium Pheophorbide-a (Tc-99m-PH-A) complex and evaluate its efficiency as an infection imaging agent. First, PH-A was obtained from Spirulina maxima algae, and the product compound was confirmed using H-1 NMR and MS ...
Bayrak, Elif, Fatma Yurt Lambrecht, Alfred R. Holzwarth, Ocakoglu, Kasim, Mehmet Onursal, Osman Yilmaz, Holzwarth, Alfred R., Yilmaz, Osman, Onursal, Mehmet, Kasim Ocakoglu, Elif Bayrak, Lambrecht, Fatma Yurt   +11 more
core   +1 more source

Cyclopeptidic photosensitizer prodrugs as proteolytically triggered drug delivery systems of pheophorbide A: part II–co-loading of pheophorbide A and black hole quencher

Photochemical & Photobiological Sciences, 2018
Previously, we have shown that the use of a cyclopeptidic carrier could be of great interest for the design of fully characterized prodrugs for further use in photodynamic therapy. In order to further optimize the design, we decided to modify the highly quenched conjugate uPA-cPPP4/5 by co-loading a long-distance fluorescence quencher. For this purpose
Bouilloux, Jordan, Yuschenko, Oleksandr, Dereka, Bogdan, Boso, Gianluca, Babic, Andréj, Zbinden, Hugo, Vauthey, Eric, Lange, Norbert   +7 more
openaire   +3 more sources

The photoactivated antifungal activity and possible mode of action of sodium pheophorbide a on Diaporthe mahothocarpus causing leaf spot blight in Camellia oleifera

Frontiers in Microbiology
IntroductionSodium pheophorbide a (SPA) is a natural plant-derived photosensitizer, with high photoactivated antifungal activity against some phytopathogenic fungi.
Xu-Long Shi, Jing Yang, Yu Zhang, Piao Qin, He-Ying Zhou, Yun-Ze Chen   +5 more
doaj   +1 more source

Phytotoxic Chlorophyll Derivatives from Petrorhagia velutina (Guss.) Ball et Heyw Leaves

Natural Product Communications, 2010
In this investigation the phytochemical study of chlorophyll derivatives from leaf extract of Petrorhagia velutina, a eurimediterranean plant species typical of macchia vegetation is reported.
Brigida D'Abrosca, Monica Scognamiglio, Nikolaos Tsafantakis, Antonio Fiorentino, Pietro Monaco   +4 more
doaj   +1 more source

Time and frequency resolved spontaneous emission from supramolecular pheophorbide-a complexes: A mixed quantum classical computation [PDF]

, 2009
A mixed quantum classical methodology is utilized to compute the time and frequency resolved emission spectrum of a chromophore complex dissolved in ethanol.
May, V., Röder, B., Zhu, H.
core   +1 more source

Genome-Wide Characterization of the PaO Gene Family and Pyramiding Effects of Superior Haplotypes on Yield-Related Traits in Sorghum

Agronomy
The Pheophorbide a oxygenase (PaO) is a key enzyme in chlorophyll degradation and plays an important role in plant senescence. However, the PaO gene’s function in sorghum remains underexplored.
Jinbiao Li, Haoxiang Li, Ruochen Zhang, Yizhong Zhang, Juanying Zhao, Xiaojuan Zhang, Huiyan Wang   +6 more
doaj   +1 more source

Synthesis and properties of Cu- and Pd-complexes of cyclen conjugates with pheophorbide and bacteriopheophorbide

, 2019
Objectives. Chlorin and bacteriochlorin photosensitizers are effective agents for cancer photodynamic therapy and fluorescence imaging. They are also excellent chelators forming stable metal complexes.
A. F. Mironov, M. A. Grin, A. S. Smirnov
core   +1 more source