Ferroptosis and cardiovascular disease: role of free radical-induced lipid peroxidation

2021 ◽  
pp. 1-11
Author(s):  
Xin Chen ◽  
Xuan Li ◽  
Xiaodong Xu ◽  
Luxiao Li ◽  
Ningning Liang ◽  
...  
2019 ◽  
Vol 4 (1) ◽  
pp. 133-137
Author(s):  
Anastasiya S. Brichagina ◽  
Mariya I. Dolgikh ◽  
Larisa R. Kolesnikova ◽  
Larisa V. Natyaganova

Various pathologies, in particular hypertension, accompany violation of the processes of free radical oxidation. The state of the system lipid peroxidation – antioxidant protection can be assessed only by a complex of biochemical methods. The chemiluminescent method is used to obtain a faster result. The method has a number of advantages: measurement of chemiluminescence parameters is carried out in natural conditions and does not require sample preparation, is highly selective, it can be used to identify the presence of free radical pathology, analysis of the intensity of lipid peroxidation processes, the effectiveness of treatment with antioxidant medicament. The aim of the research was to study the lipid peroxidation under hypertension and stress by chemiluminescence. The experiment was conducted on male rats of the ISIAH line. The experiment consisted of 2 stages: stage of alarm and stage of chronic stress. We found that, depending on the type of stress, the state of the system lipid peroxidation-antioxidant protection differed. The role of stress in violation of the processes of lipoperoxidation in hypertension was established. The efficacy of the chemiluminescence method as an alternative to a complex of biochemical methods is shown. Express assessment of pro- and antioxidant status is possible for patients with hypertension.


2020 ◽  
Vol 61 (3) ◽  
pp. 126-130
Author(s):  
Larisa V. Pilip ◽  
◽  
Olga V. Byakova ◽  
Maria E. Kazakova ◽  
◽  
...  

The chemical processes occurring in the animal body under pathological conditions are of interest to researchers. The objective of the research was to study the indicators of lipid peroxidation and antioxidant activity in horses infested with helminthiases and treated with anthelmintic paste with an antioxidant. The study has proved the role of parasitic infestation in accelerating the processes of free radical oxidation, which is manifested by a decrease in the light sum of radicals (36.62-39.21), the maximum luminous intensity (6.13-6.98) and antioxidant activity (5.65-6.2) at the start of the research. Chronic invasion increases the concentration of under-oxidized products up to 38.59, and the rate of initiating free radical oxidation – up to 6.95, the values of antioxidant activity being stably low (5.51-5.91). An important role in the regulation of lipid peroxidation in horses during helminthiases, as well as in the process of deworming, is played by the antioxidants contained in anthelmintic preparations. The antioxidant santohin included as a compound in the «Alezan» preparation suppresses enhanced peroxidation and activates the antioxidant protection of the body, which is reflected in a decrease in the light sum of the radicals to as low as 26.73, a maximum luminous intensity to – 3.76, and an increase in antioxidant activity – up to 7.16.


Author(s):  
T. Yoshikawa ◽  
N. Yoshida ◽  
H. Miyagawa ◽  
T. Takemura ◽  
T. Tanigawa ◽  
...  

1996 ◽  
Vol 26 (6) ◽  
pp. 1163
Author(s):  
Young-Cheoul Doo ◽  
Eung-Jung Kim ◽  
Kyu-Hyung Ryu ◽  
Chong-Yun Rim ◽  
Young-Bahk Koh ◽  
...  

Author(s):  
Assem K. Okassova ◽  
Oralbek Z. Ilderbayev ◽  
Akmaral Zh. Nursafina ◽  
Gulmira M. Zharmakhanova ◽  
Bibigul B. Rakhimova ◽  
...  

BACKGROUND: For many years, the world community has been concerned with the problem of the consequences of radiation exposure on the human body. A wide range of possible variants of radiation effects on humans and biota determines the range of necessary pharmacological means of protecting the organism and populations. In the mechanisms of the formation of radioresistance, the leading role is assigned to the processes of lipid peroxidation (LPO) and the antioxidant (AO) system. The study of the effect of such factors as radiation and immobilization stress on the body separately and in combination is relevant since the modern conditions of human habitation are characterized by high urbanization, physical inactivity, and a complex radioecological situation in a number of regions. AIM: The aim of the study was to study the role of free radical oxidation in the tissues of the adrenal glands and immunocompetent organs and cells under the combined effect of a sublethal dose of gamma radiation and immobilization stress in the experiment. MATERIALS AND METHODS: The work was carried out on 40 male Wistar rats: I-control; II-subjected to immobilization stress after 1 h; III-exposed to gamma irradiation; and IV-tested combined effects (immobilization stress and gamma radiation). Before the exposure, there was topometric-dosimetric preparation of the experimental animals. To this end, the object was placed on an isocentric therapeutic desk of Terasix X-ray simulator (Czech Republic), which is similar to the therapeutic desk of the γ-irradiator by its construction and parameters. RESULTS: The results obtained make it possible to assess the role of free radical oxidation under the combined action of ionizing radiation at a sublethal dose and immobilization stress in the experiment. The combined effect was accompanied by the accumulation of diene conjugates and malondialdehyde products in homogenates and the development of double oxidative stress in the test objects. The dominant role of ionizing radiation was revealed under the combined effects of immobilization stress and radiation factor. CONCLUSIONS: In animals of the 4th group, the state of oxidative-metabolic processes was characterized by overproduction of LPO products and subsequently by depression of AO defense. The urgency of continuing research on the combined effects of radiation and stress factors on public health and taking measures to eliminate negative effects on the population seems to be undoubted.


1987 ◽  
Vol 18 (1-3) ◽  
pp. 295-300 ◽  
Author(s):  
Toshikazu Yoshikawa ◽  
Toshiki Takemura ◽  
Tohoru Tanigawa ◽  
Haruo Miyagawa ◽  
Norimasa Yoshida ◽  
...  

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