Synthesis of Ag@CuO nanohybrids and their photo-enhanced bactericidal effect through concerted Ag ion release and reactive oxygen species generation

2020 ◽  
Vol 49 (27) ◽  
pp. 9274-9281
Author(s):  
He Li ◽  
Yu Zou ◽  
Jiang Jiang
Keyword(s):  
Reactive Oxygen Species ◽  
Reactive Oxygen Species Generation ◽  
Reactive Oxygen ◽  
Bactericidal Effect ◽  
Core Shell ◽  
Oxygen Species ◽  
Ion Release

Ag@CuO core–shell nanohybrids exhibit a synergistic photo-enhanced bactericidal effect, due to concerted Ag+ release and enhanced 1O2 generation.

Роль оксида азота в реализации антиоксидантного эффекта неопиатного аналога лей-энкефалина в сердце новорожденных белых крыс

2019 ◽  
pp. 61-64
Keyword(s):  
Reactive Oxygen Species ◽  
Reactive Oxygen Species Generation ◽  
Reactive Oxygen ◽  
Postnatal Period ◽  
Oxide System ◽  
No Synthase ◽  
Albino Rats ◽  
Oxygen Species ◽  
Control Parameters ◽  
Synthase Inhibitor

The eff ect of the non-opiate analog of leu-enkephalin (peptide NALE: Phe – D – Ala – Gly – Phe – Leu – Arg) on the reactive oxygen species generation in the heart of albino rats in the early postnatal period was studied. Peptide NALE was administered intraperitoneally in the dose of 100 μ/kg daily from 2 to 6 days of life. Reactive oxygen species generation was assessed by chemiluminescence in the heart homogenates of 7-day-old animals. Decreasing of reactive oxygen species generation nearly by 30 % and an increasing in antioxidant system activity by the 20-27 %, compared with the control parameters, were found. The antioxidant eff ect of peptide NALE is associated with the presence of the amino acid Arg in the structure of the peptide. An analogue of NALE peptide, devoid of Arg (peptide Phe – D – Ala – Gly – Phe – Leu – Gly), had a signifi cant lower antioxidant eff ect. The NO-synthase inhibitor NG-nitro-L-arginine methyl ester (L-NAME) in the dose 50 mg/kg, administered with NALE peptide, reduced the severity of the NALE antioxidant eff ect. The results of the study suggest that the pronounced antioxidant eff ect of NALE peptide in the heart of albino rats, at least in part, is due to the interaction with the nitric oxide system.

UV Light-Activated GdYVO4:Eu3+ Nanoparticles Induce Reactive Oxygen Species Generation in Leukocytes Without Affecting Erythrocytes In Vitro

2021 ◽  
Author(s):  
Anatolii Onishchenko ◽  
Valeriy Myasoedov ◽  
Svetlana Yefimova ◽  
Oksana Nakonechna ◽  
Volodymyr Prokopyuk ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Uv Light ◽  
Reactive Oxygen Species Generation ◽  
Reactive Oxygen ◽  
Oxygen Species

Stimulated Reactive Oxygen Species Generation in the Spermatozoa of Infertile Men

1993 ◽  
Vol 149 (1) ◽  
pp. 64-67 ◽  
Author(s):  
Donald L. Weese ◽  
Michael L. Peaster ◽  
Kyle K. Himsl ◽  
Gary E. Leach ◽  
Pramod M. Lad ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Reactive Oxygen Species Generation ◽  
Reactive Oxygen ◽  
Oxygen Species ◽  
Infertile Men
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