scholarly journals Biologically Active Echinulin-Related Indolediketopiperazines from the Marine Sediment-Derived Fungus Aspergillus niveoglaucus

Molecules ◽  
2019 ◽  
Vol 25 (1) ◽  
pp. 61 ◽  
Author(s):  
Olga F. Smetanina ◽  
Anton N. Yurchenko ◽  
Elena V. Girich (Ivanets) ◽  
Phan Thi Hoai Trinh ◽  
Alexander S. Antonov ◽  
...  

Seven known echinulin-related indolediketopiperazine alkaloids (1–7) were isolated from the Vietnamese sediment-derived fungus Aspergillus niveoglaucus. Using chiral HPLC, the enantiomers of cryptoechinuline B (1) were isolated as individual compounds for the first time. (+)-Cryptoechinuline B (1a) exhibited neuroprotective activity in 6-OHDA-, paraquat-, and rotenone-induced in vitro models of Parkinson’s disease. (−)-Cryptoechinuline B (1b) and neoechinulin C (5) protected the neuronal cells against paraquat-induced damage in a Parkinson’s disease model. Neoechinulin B (4) exhibited cytoprotective activity in a rotenone-induced model, and neoechinulin (7) showed activity in the 6-OHDA-induced model.

Molecules ◽  
2021 ◽  
Vol 26 (2) ◽  
pp. 361
Author(s):  
Gabriel Gonzalez ◽  
Jiří Grúz ◽  
Cosimo Walter D’Acunto ◽  
Petr Kaňovský ◽  
Miroslav Strnad

Cytokinins are adenine-based phytohormones that regulate key processes in plants, such as cell division and differentiation, root and shoot growth, apical dominance, branching, and seed germination. In preliminary studies, they have also shown protective activities against human neurodegenerative diseases. To extend knowledge of the protection (protective activity) they offer, we investigated activities of natural cytokinins against salsolinol (SAL)-induced toxicity (a Parkinson’s disease model) and glutamate (Glu)-induced death of neuron-like dopaminergic SH-SY5Y cells. We found that kinetin-3-glucoside, cis-zeatin riboside, and N6-isopentenyladenosine were active in the SAL-induced PD model. In addition, trans-, cis-zeatin, and kinetin along with the iron chelator deferoxamine (DFO) and the necroptosis inhibitor necrostatin 1 (NEC-1) significantly reduced cell death rates in the Glu-induced model. Lactate dehydrogenase assays revealed that the cytokinins provided lower neuroprotective activity than DFO and NEC-1. Moreover, they reduced apoptotic caspase-3/7 activities less strongly than DFO. However, the cytokinins had very similar effects to DFO and NEC-1 on superoxide radical production. Overall, they showed protective activity in the SAL-induced model of parkinsonian neuronal cell death and Glu-induced model of oxidative damage mainly by reduction of oxidative stress.


2014 ◽  
Vol 55 (3) ◽  
pp. 587-595 ◽  
Author(s):  
Pawel Kermer ◽  
Anja Köhn ◽  
Marlena Schnieder ◽  
Paul Lingor ◽  
Mathias Bähr ◽  
...  

Pharmacologia ◽  
2015 ◽  
Vol 6 (4) ◽  
pp. 125-130 ◽  
Author(s):  
Cuddapah Rajaram ◽  
Kandula Ravindra Reddy ◽  
Kothapalli Bonnth Ch Sekhar

Data in Brief ◽  
2021 ◽  
pp. 107535
Author(s):  
Gayathree Karthikkeyan ◽  
Ashwini Prabhu ◽  
Ravishankar Pervaje ◽  
Sameera Krishna Pervaje ◽  
Prashant Kumar Modi ◽  
...  

2019 ◽  
Vol 37 (1) ◽  
pp. 156-170 ◽  
Author(s):  
Mahboubeh Manouchehrabadi ◽  
Mona Farhadi ◽  
Zahra Azizi ◽  
Anahita Torkaman-Boutorabi

ChemMedChem ◽  
2014 ◽  
Vol 10 (1) ◽  
pp. 69-82 ◽  
Author(s):  
Paolo Di Fruscia ◽  
Emmanouil Zacharioudakis ◽  
Chang Liu ◽  
Sébastien Moniot ◽  
Sasiwan Laohasinnarong ◽  
...  

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