scholarly journals Effect of low doses of chlorsulfuron on lipid peroxidation and protein oxidative modification in rats in subchronic experiments

2005 ◽  
Vol 2005 (2) ◽  
pp. 33-37
Author(s):  
N.S. Leonenko ◽  
Keyword(s):  
Lipid Peroxidation ◽  
Oxidative Modification ◽  
Low Doses ◽  
Protein Oxidative Modification

REDOX STATUS OF ASCITIC FLUIDAT DIFFERENT STAGES OF EXPERIMENTAL OVARIAN CANCER

2019 ◽  
pp. 117-121
Author(s):  
A.Yu. Fedotova ◽  
D.R. Dolgova ◽  
T.V. Abakumova ◽  
L.V. Poludnyakova ◽  
T.P. Gening
Keyword(s):  
Ovarian Cancer ◽  
Lipid Peroxidation ◽  
Tumor Growth ◽  
Ascitic Fluid ◽  
Redox Status ◽  
Oxidative Modification ◽  
Transferase Activity ◽  
Glutathione S Transferase ◽  
Protein Oxidative Modification ◽  
Aldehyde Groups

In Russia, ovarian cancer (OC) is the first cause of mortality from vaginal cancer. Ascitic form of OC is considered to be the most malignant. The ascites composition is determined by the neoplasm biological properties in its development. The aim of the study was to evaluate the redox status ofascitic fluid at various stages of experimental OC. Materials and Methods. The work was performed on white outbred rats, 180–200 g, with a transplanted ascitic ovarian tumor. Ascites was taken from animals in the stationary and terminal stages of tumor growth. After removal of tumor cells, lipid peroxidation parameters were biochemically determined in it: diene conjugates, ketodienes, Schiff bases, malondialdehyde, levels of protein oxidative modification (346 nm – neutral aldehyde groups; 370 nm – neutral ketone groups; 430 nm – basic aldehyde groups; 530 nm – basic ketones) and antioxidant defense components – catalase and glutathione-S-transferase activity. The results were evaluated by means of Mann-Whitney U test (Stata 6.0). Results. As a result of the research conducted, the authors determined a significant reduction in the level of protein oxidative modification, a decrease in the catalase activity and a decrease in the malondialdehyde level at the terminal stage of tumor growth as compared with the stationary stage indices. Conclusion The redox status of ascitic fluid in experimental OC is characterized by a decrease in the oxidative modification of proteins, a decrease in the intensity of lipid peroxidation and a constant catalase and glutathione-S-transferase activity in the dynamics of neoplasm progression. Keywords: ovarian cancer, ascitic fluid, protein oxidative modification, lipid peroxidation, antioxidant system. В России рак яичников (РЯ) занимает первое место среди причин смертности от рака гениталий. Асцитная форма РЯ оценивается как наиболее злокачественная. Состав асцита при этом определяется биологическими свойствами неоплазмы в динамике ее развития. Целью исследования была оценка редокс-статуса асцитической жидкости на различных стадиях экспериментального РЯ. Материалы и методы. Работа выполнена на белых беспородных крысах массой 180–200 г с перевиваемой асцитной опухолью яичников. У животных в стационарную и терминальную стадии роста опухоли отбирался асцит, в котором после удаления опухолевых клеток биохимически определяли параметры перекисного окисления липидов: диеновые конъюгаты, кетодиены, основания Шиффа, малоновый диальдегид, уровни окислительной модификации белков (346 нм – альдегидные группы нейтрального характера; 370 нм – кетонные группы нейтрального характера; 430 нм – альдегидные группы основного характера; 530 нм – кетонные группы основного характера) и компоненты антиоксидантной защиты – активность каталазы и глутатион-S-трансферазы. Полученные результаты оценивались с использованием непараметрического критерия Манна–Уитни (Stata 6.0). Результаты. В результате проведенных исследований было установлено в терминальной стадии роста опухоли значимое по сравнению с показателями в стационарной стадии снижение уровня окислительной модификации белков, снижение активности каталазы и тенденция к снижению уровня малонового диальдегида. Заключение. Редокс-статус асцитической жидкости при экспериментальном РЯ характеризуется снижением окислительной модификации белков, тенденцией к снижению интенсивности перекисного окисления липидов и постоянной активностью каталазы и глутатион-S-трансферазы в динамике прогрессирования неоплазмы. Ключевые слова: рак яичников, асцитическая жидкость, окислительная модификация белков, перекисное окисление липидов, антиоксидантная система.

The evaluation of lipid peroxidation and oxidative modification of proteins in blood serum under obesity development and the consumption of aqueous kidney beans Phaseolus vulgaris pods extract

2020 ◽  
Vol 33 (1) ◽  
pp. 38-44
Author(s):  
Alona Yurchenko ◽  
Daryna Krenytska ◽  
Olexii Savchuk ◽  
Tetiana Halenova ◽  
Natalia Raksha ◽  
...  
Keyword(s):  
Lipid Peroxidation ◽  
Oxidative Modification ◽  
Resistance Development ◽  
Oxidative Modification Of Proteins ◽  
Kidney Beans ◽  
Calorie Diet ◽  
Diet Control ◽  
High Calorie Diet ◽  
High Calorie

AbstractOur interest has focused on the investigation of the anti-obese potential of kidney beans (P. vulgaris) pods extract. In the course of the study, obesity development in rats was induced with high-calorie diet. Control and obese rats then have consumed with aqueous kidney beans (P. vulgaris) pods extract during 6 weeks (200 mg/kg). Results show that the long-term consumption of P. vulgaris pods extract can lead to the reduction of hyperglycemia and insulin resistance development. Furthermore, we saw a normalization of lipid peroxidation parameters and oxidative modification of protein due to the consumption of the kidney beans (P. vulgaris) pods extract. Our experimental data demonstrate the ability of the kidney beans (P. vulgaris) pod extracts to mitigate obesity development but the details of this mechanism remains to be not fully understood.

scholarly journals Antioxidants, lysosomes and elements status during the life cycle of sea trout Salmo trutta m. trutta L.

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Natalia Kurhaluk ◽  
Halyna Tkachenko
Keyword(s):  
Oxidative Stress ◽  
Lipid Peroxidation ◽  
Muscle Tissue ◽  
Salmo Trutta ◽  
Protein Carbonyl ◽  
Oxidative Modification ◽  
Oxidative Stress Biomarkers ◽  
Development Stages ◽  
Stress Biomarkers ◽  
Element Contents

AbstractThe aim of our study was to elucidate the effects of both development stages (parr, smolt, adult, spawner), and kelt as a survival form and sex (male, female) on the functional stability of the lysosomal complex, biomarkers of oxidative stress, and element contents in the muscle tissue of the sea trout (Salmo trutta m. trutta L.) sampled in the Pomerania region (northern Poland). We have evaluated the maximal activities of lysosomal enzymes (alanyl aminopeptidase, leucyl aminopeptidase, β-N-acetylglucosaminidase, and acid phosphatase), lipid peroxidation level, and protein carbonyl derivatives as indices of muscle tissue degradation. The relationship between lysosomal activity and oxidative stress biomarkers estimated by the lipid peroxidation level and protein carbonyl derivatives was also assessed, as well as the relationships between element levels and oxidative stress biomarkers. Trends of the main effects (i.e., the development stages and sex alone, the interaction of the sex and development stage simultaneously) on oxidative stress biomarkers, lysosomal functioning, and element contents in the muscle tissue were evaluated. The study has shown sex-related relationships between the pro- and antioxidant balance and the tissue type in the adult stage as well as modifications in the lysosomal functioning induced by long-term environmental stress associated with changing the habitats from freshwater to seawater and intense migrations. The highest level of toxic products generated in oxidative reactions and oxidative modification of proteins was noted in both the spawner stage and the kelt form. The holistic model of analysis of all parameters of antioxidant defense in all development stages and sex demonstrated the following dependencies for the level of lipid peroxidation, oxidative modification of proteins, lysosomal activities, and element contents: TBARS > OMP KD > OMP AD > TAC, AcP > NAG > LAP > AAP and Cu > Fe > Ca > Mn > Zn > Mg, respectively.

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