Pre-harvest ethylene control affects vase life of cut rose ‘Carola’ by regulating energy metabolism and antioxidant enzyme activity

2018 ◽  
Vol 59 (6) ◽  
pp. 835-845 ◽  
Author(s):  
Bi Gong ◽  
Shuai Huang ◽  
Niu Ye ◽  
Xue Yuan ◽  
Huiling Ma
Keyword(s):  
Enzyme Activity ◽  
Energy Metabolism ◽  
Antioxidant Enzyme ◽  
Antioxidant Enzyme Activity ◽  
Vase Life ◽  
Cut Rose

scholarly journals Aerobic Exercise During Advance Stage of Uncontrolled Arterial Hypertension

2021 ◽  
Vol 12 ◽  
Author(s):  
Luana U. Pagan ◽  
Mariana J. Gomes ◽  
Ricardo L. Damatto ◽  
Aline R. R. Lima ◽  
Marcelo D. M. Cezar ◽  
...  
Keyword(s):  
Heart Failure ◽  
Enzyme Activity ◽  
Energy Metabolism ◽  
Protein Expression ◽  
Arterial Hypertension ◽  
Antioxidant Enzyme ◽  
Oxidase Activity ◽  
Myocardial Function ◽  
Antioxidant Enzyme Activity ◽  
Nadph Oxidase Activity

AimTo evaluate the influence of physical training on myocardial function, oxidative stress, energy metabolism, and MAPKs and NF-κB signaling pathways in spontaneously hypertensive rats (SHR), at advanced stage of arterial hypertension, which precedes heart failure development.MethodsWe studied four experimental groups: normotensive Wistar rats (W, n = 27), trained W (W-EX, n = 31), SHR (n = 27), and exercised SHR (SHR-EX, n = 32). At 13 months old, the exercise groups underwent treadmill exercise 5 days a week for 4 months. In vitro myocardial function was analyzed in left ventricular (LV) papillary muscle preparations. Antioxidant enzyme activity and energy metabolism were assessed by spectrophotometry. Nicotinamide adenine dinucleotide phosphate (NADPH) oxidase activity was analyzed by lucigenin reduction and protein expression by Western blot. Statistical analyzes: ANOVA and Tukey or Kruskal–Wallis and Dunn tests.ResultsSHR-EX had a lower frequency of heart failure features than SHR. Myocardial function and antioxidant enzyme activity were better in SHR-EX than SHR. Lipid hydroperoxide concentration, and phosphorylated JNK and total IkB protein expression were higher in hypertensive than control groups. Malondialdehyde, NADPH oxidase activity, total JNK, phosphorylated p38, phosphorylated and total p65 NF-κB, and phosphorylated IkB did not differ between groups. Protein expression from total p38, and total and phosphorylated ERK were higher in SHR than W. Lactate dehydrogenase and phosphorylated ERK were lower and citrate synthase and β-hydroxyacyldehydrogenase were higher in SHR-EX than SHR.ConclusionExercise improves physical capacity, myocardial function, and antioxidant enzyme activity; reduces the frequency of heart failure features and ERK phosphorylation; and normalizes energy metabolism in SHR.

Antioxidant Enzyme Levels Inversely Covary with Hearing Loss After Amikacin Treatment

2003 ◽  
Vol 14 (03) ◽  
pp. 134-143 ◽  
Author(s):  
James J. Klemens ◽  
Robert P. Meech ◽  
Larry F. Hughes ◽  
Satu Somani ◽  
Kathleen C.M. Campbell
Keyword(s):  
Hearing Loss ◽  
Enzyme Activity ◽  
Antioxidant Enzyme ◽  
Guinea Pigs ◽  
Auditory Brainstem ◽  
Antioxidant Enzyme Activity ◽  
Control Group ◽  
Glutathione S Transferase ◽  
Brainstem Response ◽  
The Difference

This study's purpose was to determine if a correlation exists between cochlear antioxidant activity changes and auditory function after induction of aminoglycoside (AG) ototoxicity. Two groups of five 250-350 g albino guinea pigs served as subjects. For 28 days, albino guinea pigs were administered either 200 mg/kg/day amikacin, or saline subcutaneously. Auditory brainstem response testing was performed prior to the first injection and again before sacrifice, 28 days later. Cochleae were harvested and superoxide dismutase, catalase, glutathione peroxidase, glutathione-S-transferase, glutathione reductase activities and malondialdehyde levels were measured. All antioxidant enzymes had significantly lower activity in the amikacin group (p ≤ 0.05) than in the control group. The difference in cochlear antioxidant enzyme activity between groups inversely correlated significantly with the change in ABR thresholds. The greatest correlation was for the high frequencies, which are most affected by aminoglycosides. This study demonstrates that antioxidant enzyme activity and amikacin-induced hearing loss significantly covary.

Rats fed a high sucrose diet have altered heart antioxidant enzyme activity and gene expression

Life Sciences ◽  
2002 ◽  
Vol 71 (11) ◽  
pp. 1303-1312 ◽  
Author(s):  
Jérôme Busserolles ◽  
Wioletta Zimowska ◽  
Edmond Rock ◽  
Yves Rayssiguier ◽  
Andrzej Mazur
Keyword(s):  
Gene Expression ◽  
Enzyme Activity ◽  
Antioxidant Enzyme ◽  
Antioxidant Enzyme Activity ◽  
Sucrose Diet ◽  
High Sucrose Diet ◽  
High Sucrose

scholarly journals Protecting cotton photosynthesis during moderate chilling at high light intensity by increasing chloroplastic antioxidant enzyme activity

2001 ◽  
Vol 52 (365) ◽  
pp. 2345-2354 ◽  
Author(s):  
Paxton Payton ◽  
Robert Webb ◽  
Dmytro Kornyeyev ◽  
Randy Allen ◽  
A. Scott Holaday
Keyword(s):  
Enzyme Activity ◽  
Light Intensity ◽  
Antioxidant Enzyme ◽  
High Light Intensity ◽  
Antioxidant Enzyme Activity ◽  
High Light
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