Unwinding and hydrodynamic flow linear dichroism characteristics of supercoiled DNA covalently modified with two isomeric methylchrysene diol epoxides of different biological activities

1993 ◽  
Vol 6 (5) ◽  
pp. 616-624 ◽  
Author(s):  
Luisa Balasta ◽  
Rong Xu ◽  
Nicholas E. Geacintov ◽  
Charles E. Swenberg ◽  
Shantu Amin ◽  
...  
Keyword(s):  
Biological Activities ◽  
Linear Dichroism ◽  
Hydrodynamic Flow ◽  
Supercoiled Dna ◽  
Diol Epoxides

Linear dichroism characteristics of ethidium-and proflavine-supercoiled DNA complexes

Biopolymers ◽  
1990 ◽  
Vol 29 (14) ◽  
pp. 1735-1744 ◽  
Author(s):  
Charles E. Swenberg ◽  
Susan E. Carberry ◽  
Nicholas E. Geacintov
Keyword(s):  
Linear Dichroism ◽  
Dna Complexes ◽  
Supercoiled Dna

scholarly journals Catalytic transformations of supercoiled DNA as studied by flow linear dichroism technique

FEBS Journal ◽  
2005 ◽  
Vol 272 (24) ◽  
pp. 6336-6343 ◽  
Author(s):  
Alexander Gabibov ◽  
Elena Yakubovskaya ◽  
Mark Lukin ◽  
Peter Favorov ◽  
Andrey Reshetnyak ◽  
...  
Keyword(s):  
Linear Dichroism ◽  
Supercoiled Dna ◽  
Catalytic Transformations

Improvement of cytoprotective and antioxidant activity of Rosa canina L. and Salix alba L. by controlled differential sieving process against H2O2-induced oxidative stress in mouse primary splenocytes

2017 ◽  
Vol 87 (3-4) ◽  
pp. 191-200 ◽  
Author(s):  
Nidhal Soualeh ◽  
Aliçia Stiévenard ◽  
Elie Baudelaire ◽  
Rachid Soulimani ◽  
Jaouad Bouayed
Keyword(s):  
Antioxidant Activity ◽  
Antioxidant Activities ◽  
Biological Activities ◽  
Good Alternative ◽  
Activity Levels ◽  
Salix Alba ◽  
Rosa Canina ◽  
Free Process ◽  
Plant Powders ◽  
Sieving Process

Abstract. In this study, cytoprotective and antioxidant activities of Rosa canina (RC) and Salix alba (SA), medicinal plants, were studied on mouse primary splenocytes by comparing Controlled Differential Sieving process (CDSp), which is a novel green solvent-free process, versus a conventional technique, employing hydroethanolic extraction (HEE). Thus, preventive antioxidant activity of three plant powders of homogeneous particle sizes, 50–100 µm, 100–180 µm and 180–315 µm, dissolved directly in the cellular buffer, were compared to those of hydroethanolic (HE) extract, at 2 concentrations (250 and 500 µg/mL) in H2O2-treated spleen cells. Overall, compared to HE extract, the superfine powders, i. e., fractions < 180 µm, at the lowest concentration, resulted in greater reactive oxygen species (ROS) elimination, increased glutathione peroxidase (GPx) activity and lower malondialdehyde (MDA) production. Better antioxidant and preventive effects in pre-treated cells were found with the superfine powders for SA (i. e., 50–100 µm and 100–180 µm, both p < 0.001), and with the intermediate powder for RC (i. e., 100–180 µm, p < 0.05) versus HE extract. The activity levels of catalase (CAT) and superoxide dismutase (SOD) in pretreated splenocytes exposed to H2O2, albeit reduced, were near to those in unexposed cells, suggesting that pretreatment with the fine powders has relatively restored the normal levels of antioxidant-related enzymes. These findings supported that CDSp improved the biological activities of plants, avoiding the use of organic solvents and thus it could be a good alternative to conventional extraction techniques.

Shape‐controlled silver NPs for shape‐dependent biological activities

2017 ◽  
Vol 12 (9) ◽  
pp. 647-651 ◽  
Author(s):  
Fatemeh Sadeghi ◽  
Abolfazl Yazdanpanah ◽  
Amirbabak Abrishamkar ◽  
Fatholah Moztarzadeh ◽  
Arash Ramedani ◽  
...  
Keyword(s):  
Biological Activities ◽  
Silver Nps ◽  
Shape Controlled

Hydrodynamic flow conditions through permeable walls

1992 ◽  
Vol 2 (8) ◽  
pp. 1565-1569
Author(s):  
S. Vollmar ◽  
J. A. M. S. Duarte
Keyword(s):  
Hydrodynamic Flow ◽  
Flow Conditions ◽  
Permeable Walls

Total Electron Yield Detector Working at Low Temperature for Linear Dichroïsm Studies on Monocrystalline Samples

1997 ◽  
Vol 7 (C2) ◽  
pp. C2-325-C2-326
Author(s):  
C. Revenant-Brizard ◽  
J. R. Regnard ◽  
J. Mimault ◽  
D. Duclos ◽  
J. J. Faix
Keyword(s):  
Low Temperature ◽  
Linear Dichroism ◽  
Total Electron Yield ◽  
Total Electron ◽  
Electron Yield

Research into chemistry and biological activities of Prangos Lindl. (Apiaceae) species of Turkey

Planta Medica ◽  
2009 ◽  
Vol 75 (09) ◽  
Author(s):  
KHC Baser ◽  
B Demirci ◽  
G Ozek ◽  
A Duran ◽  
N Tabanca ◽  
...  
Keyword(s):  
Biological Activities

Studies on the chemical constituents and their biological activities of the fruit of Garcinia multiflora

Planta Medica ◽  
2010 ◽  
Vol 76 (12) ◽  
Author(s):  
JJ Chen ◽  
CW Ting ◽  
MH Yen ◽  
TL Hwang ◽  
C Peng ◽  
...  
Keyword(s):  
Biological Activities ◽  
Chemical Constituents

Biological Activities of Andrographolide and Some Semi-synthesis Nonbitter Andrographolides

Planta Medica ◽  
2011 ◽  
Vol 77 (12) ◽  
Author(s):  
C Aromdee ◽  
N Sriubolmas ◽  
T Ekalaksananan ◽  
C Pientong ◽  
S Seubsasana ◽  
...  
Keyword(s):  
Biological Activities

Chemical analysis and biological activities of methanol extracts from Astragalus gombiformis Pomel (Fabaceae)

Planta Medica ◽  
2011 ◽  
Vol 77 (12) ◽  
Author(s):  
H Teyeb ◽  
O Houta ◽  
A Lamari ◽  
M Neffati ◽  
W Douki ◽  
...  
Keyword(s):  
Chemical Analysis ◽  
Biological Activities ◽  
Methanol Extracts
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