Effect of Chronic Postnatal Stress on Pro-and Antioxidant System and Changes in Autonomic Balance of Cardiac Rhythm in Rats

Author(s):  
Olha V. Denefil ◽  
Iryna R. Mits
10.12737/5483 ◽  
2014 ◽  
Vol 8 (1) ◽  
pp. 1-6
Author(s):  
Чеснокова ◽  
V. Chesnokova

The aim of research is study peculiar properties of vegetative status and 24 hours´ arterial pressure profile in inefficient antihypertensive therapy patients. It was examined 180 patients in age from 42 to 65 with diagnosis I-III degree of arterial hypertension on classification RSOC; volunteers without arterial hypertension and sporadic rise of pressure has been integrated into research (n=36). Clinical and biochemical monitoring realized to the whole of examines in accordance with standards on diagnostic of arterial hypertension. 24 hours´ profile arterial pressure will be done in conformity with guideline national joint committee on cure of arterial hypertension JNK VI, WHO/ISH. Determination predominant autonomic balance carried out from system for integrated vegetative status, by its results patients were divided into subgroups. Then the patients were separated into subgroups by predominant autonomic balance with a glance degree and phase of arterial hypertension; modification key indicator of 24 hours´ arterial pressure profile in subgroups was investigated. It has been found experimentally that type of predominant autonomic balance varies with the phase, by not with degree of arterial hypertension. Inefficient antihypertensive therapy patients have more high frequency and variability of cardiac rhythm, which combine with insufficient degree decrease of cardiac rhythm at night; more high value of systolic, diastolic, sphygmic and medium pressure comparison with control group. Complex hemodynamic rates (DP, maxIMP) and also bodymass index in inefficient antihypertensive therapy patients exceed the same in efficient treatment cluster.


2017 ◽  
Vol 16 (1) ◽  
pp. 9-14
Author(s):  
M.L. Mamalyga ◽  
◽  
L.M. Mamalyga ◽  

The aim of the study was to determine the influence of pre-symptomatic and symptomatic stages of Parkinson’s disease and its treatment on the cardiac disorders in C57BL/6 mice. Materials and methods. Investigations were carried out on C57BL/6 male mice. Degeneration of dopaminergic neurons were created by the neurotoxin. In freely moving animals in online regime a 24-hour ECG recording using wireless telemetry system ML880B106 was conducted. After completing studies animals was injected L-dopa (a precursor of dopamine synthesis). All the animals underwent repeated study of HRV. Results. The disbalance of autonomic heart regulation develops already in the pre-symptomatic stage of Parkinson’s disease. The early symptomatic stage is accompanied by the aggravation of heart dysfunction due to the shift of the autonomic balance towards the increase of sympathetic and decrease of parasympathic effect on the heart. Coronary disorders concomitant to Parkinson’s disease increase a risk of life threatening arrhythmia and sudden death syndrome not only in the early symptomatic stage but also in the pre-symptomatic stage. Conclusions. L-dopa effectively restores the structure of heart rate and prevents the risk of life threatening arrhythmia only in the pre-symptomatic stage of disease.


2016 ◽  
Vol 18 (2) ◽  
pp. 157-168
Author(s):  
N. V. Kozel ◽  
E. E. Manankina ◽  
Y. V. Viazau ◽  
I. A. Dremuk ◽  
S. M. Savina ◽  
...  

2008 ◽  
Vol 21 (2) ◽  
pp. 255-258
Author(s):  
Sophia Kovalchuc ◽  
Andriy Revura ◽  
Bohdan Melekh ◽  
Oksana Khavrona ◽  
Yuriy Fedevych ◽  
...  

Author(s):  
И.Д. Габдрахманова ◽  
В.А. Мышкин ◽  
Д.А. Еникеев ◽  
А.Р. Гимадиева

Цель исследования: изучение влияния сукцината 1,3,6-триметил-5-гидроксиурацила на антиоксидантную систему и свободнорадикальные процессы в печени взрослых и старых крыс при воздействии тетрахлорметана. Методика. В эксперименте использованы половозрелые животные 12-месячного возраста со средней массой 250 г и старые животные 24-месячного возраста, средней массой 395 г по 30 особей в каждой возрастной группе. Токсическое поражение печени вызывали подкожным введением 50%-ного масляного раствора тетрахлорметана (ТХМ, 2 г/кг) в течение 4 сут. Одновременно с токсикантом опытным животным внутрибрюшинно вводили водный раствор коплексного соединения сукцинат-1,3,6-триметил-5-гидроксиурацила (2,5 мг/100 г) 3 раза в сут. в течение первых 4 сут. и в течение последующих 3 сут. 1 раз в сут. Контролем служили опытные животные, которым вводили физиологический раствор в том же объеме. Изучали окислительную модификацию белков, перекисное окисление липидов (по содержанию ТБК-реагирующих продуктов, уровню гидроперекисей липидов и содержанию диеновых конъюгатов). Состояние антиоксидантной системы оценивали по активности ферментов супероксиддисмутазы, каталазы и глутатионпероксидазы, определяемых биохимическими методами. Антирадикальную активность комплексного соединения и его составляющих субстанций исследовали в модельной системе «этилбензол-ледяная уксусная кислота» с вычислением константы К - скорости взаимодействия перекисных радикалов с молекулами изучаемого соединения в сравнении с эталонным антиоксидантом-ионолом с витамином Е. Результаты. Сукцинат + 1,3,6-триметил-5-гидрокси-урацила существенно снижает токсическое действие ТХМ на печень взрослых и старых крыс, устраняет дисбаланс в системах свободнорадикального окисления белков у старых крыс, статистически значимо улучшает показатели свободнорадикального окисления (СРО) липидов в печени взрослых и старых крыс: снижает уровень продуктов ПОЛ - гидроперекисей, диеновых конъюгатов, ТБК-реагирующих продуктов, а также улучшает работу антиоксидантной системы (АОС), повышая активность каталазы, супероксиддисмутазы и глутатионпероксидазы. Установлена высокая антирадикальная активность изучаемого препарата сопоставимая с активностью эталонного антиоксиданта ионола. Заключение. Сукцинат и его производные способны выступать как индивидуальные вещества с непосредственным антирадикальным механизмом действия, а не только как стимуляторы ферментативных систем антиоксидантной защиты. Aim. To study the effect of a complex compound, 1,3,6-trimethyl-5-hydroxyuracil succinate, on the antioxidant system and free radical processes induced by carbon tetrachloride in the liver of adult and old rats. Methods. The study used sexually mature animals aged 12 months and weighing 250 g and old animals aged 24 months weighing 395 g (total n= 60, 30 rats in each age group). Toxic damage of liver was induced by subcutaneous injections of a 50% oil solution of carbon tetrachloride (CTC) at 2 g/kg for 4 days. Together with the toxicant, experimental animals were injected with a water solution of a complex compound, succinate 1,3,6-trimethyl-5-hydroxyuracil, at a dose of 2.5 mg/100 g, i.p., 3 times per day for the first 4 days and once daily for the following 3 days. Experimental animals were used as controls, which were administered saline in the same volume. Oxidative modifications of proteins, lipid peroxidation (by levels of thiobarbituric acid reactive substances (TBARS), lipid hydroperoxides, and conjugated dienes) were studied. Condition of the antioxidant system was evaluated by activities of superoxide dismutase, catalase, and glutathione peroxidase using biochemical methods. Antiradical activity of the complex compound and its components was studied in a model system of ethylbenzene-glacial acetic acid; the K7 constant of the rate of peroxide radical interaction with molecules of the studied compound was compared with the reference antioxidant ionol with vitamin E. Results. Succinate +1.3.6-trimethyl-5-hydroxyuracil, considerably reduced TXM hepatotoxicity in adult and old rats; removed the disbalance in free radical systems of protein oxidation in old rats; significantly improved indexes of free-radical oxidation (FRO) of hepatic lipids in adult and old rats; decreased levels of LP products, hydroperoxides, conjugated dienes, and TBARS, and enhanced performance of the antioxidant system (AOS) by increasing activities of catalase, superoxide dismutase, and glutathione peroxidase. The study demonstrated a high antiradical activity of the study drug comparable with the activity of the reference antioxidant, ionol. Сonclusion. Succinate and its derivatives can perform as individual substances with a direct antiradical mechanism of action rather than as stimulators of enzymic systems of antioxidant defence.


2019 ◽  
Vol 4 (6) ◽  
pp. 316-320
Author(s):  
O. M. Buchko ◽  
◽  
V. V. Havryliak ◽  
A. Z. Pylypets ◽  
◽  
...  

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