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HayKOBHH BicHHK .HbBiBCbKoro Ha^0Ha№H0ro ymBepcurery BeTepHHapHOi MegnuUHH Ta 6i0TexH0H0riH iMeHi C.3. f^H^Koro Scientific Messenger of Lviv National University of Veterinary Medicine and Biotechnologies named after S.Z. Gzhytskyj
doi: 10.15421/nvlvet6612
ISSN 2413-5550 print ISSN 2518-1327 online
http://nvlvet.com.ua/
УДК 619:636.2:615.9:577.15:546.48
Influence of «Metisevit» on the activity of enzyme and nonenzyme link of antioxidant protection under the bull's body cadmium loading
B. Gutyj, Y. Lavryshyn, V. Binkevych, O. Binkevych, О. Paladischuk, J. Strons'kyj, I. Hariv
bvh@ukr.net
Lviv National University of Veterinary Medicine and Biotechnologies named after S.Z. Gzhytskyi,
Pekarska Str., 50, Lviv, 79010, Ukraine
The article contains the research results of the effect of cadmium chloride on the indexes of enzyme and nonenzyme systems of antioxidant defense system in young cattle, such as the activity of catalase, superoxide dismutase, glutathione peroxidase, glutathione levels of vitamins A and E. It is established that feeding calves at a dose of toxicant 0.04 mg / kg activity of catalase, superoxide dismutase, glutathione peroxidase, glutathione levels of vitamins A and E in the blood of experimental animals decreased throughout the experiment. The lowest indicators of antioxidant in the blood ofyoung cattle is set on the twenty -fourth day of the experiment, which is associated with increased activation of lipid peroxidation and the balance between antioxidant system and lipid peroxidation intensity. Given the cadmium load of young cattle it is used a new integrated drug with antioxidant action «Metisevit», which includes metifen, sodium selenite and vitamin E wich is founded as stimulating effects on the activity of antioxidant protection. In particular,it is established probable increase in activity of catalase, superoxide dismutase, glutathione peroxidase, glutathione levels, vitamin A and vitamin E in the blood of young cattle, which has performed cadmium stress. These changes occur through comprehensive action components of the drug «Metisevit» that leads to the normalization of metabolic processes and free radical in the body of the bull. The results of the research indicate antioxidant drug «Metisevit» in the application of its young cattle and the validity of his administration to improve the body's antioxidant status of chronic cadmium toxicosis.
Key words: pharmacology, toxicology, bull, antioxidant system, the drug «Metisevit» reduced glutathione, vitamin E, vitamin A, catalase, superoxide dismutase, glutathione peroxidase.
Вплив препарату «Меткевт» на актившсть ензимноУ та неензимноУ ланки антиоксидантного захисту оргашзму бугайщв за умов кадмieвого навантаження
Б.В. Гутий, Ю.Ю. Лавришин, В.Я. Бiнкевич, О.М. Бшкевич, О.Р. Паладiйчук, Ю.С. Стронський, I.I. XapiB
bvh@ukr.net
Львiвський нацюнальний утверситет ветеринарног медицини та бютехнологш iMeHi С.З. Гжицького,
вул. Пекарська, 50, м. Львiв, 79010, Украгна
У статтi наведено результати до^джень впливу хлориду кадмю на показники ензимног та неензимног системи антиоксидантного захисту у молодняку великог рогатог худоби, а саме на актившсть каталази, супероксиддисмутази, глу-татiонneроксидази, рiвeнь вiдновлeного глутатюну, втамжв А i Е. Встановлено, що згодовування бугайцям даного токсиканту у дозi 0,04 мг/кг маси тма актившсть каталази, супероксиддисмутази, глутатiонпeроксидази, рiвeнь вiдновлeно-го глутатiону, втамжв А i Е у кровi до^дних тварин упродовж усього до^ду знижувався. Найнижчий рiвeнь показниюв системи антиоксидантного захисту у кровi молодняку великог рогатог худоби встановлено на двадцять четверту добу до^ду, що пов 'язано iз посиленою активащею процеЫв лтопероксидацп та порушенням рiвноваги мiж активтстю анти-оксидантног системи та ттенсивтстю перекисного окиснення лiпiдiв. За умов кадмiевого навантаження, молодняку вели-
Citation:
Gutyj, B., Lavryshyn, Y., Binkevych, V., Binkevych, O., Paladischuk, O., Strons'kyj, J., Hariv, I. (2016). Influence of «Metisevit» on the activity of enzyme and nonenzyme link of antioxidant protection under the bull's body cadmium loading. Scientific Messenger LNUVMBT named after S.Z. Gzhytskyj, 18, 2(66), 52-58.
ко! рогатоI худоби застосовували новий комплексний препарат з антиоксидантною дieю «Меткевт», до складу якого входять метiфен, селент натрю та втамт Е. Виявлено стимулювальний вплив препарату на активтсть системи анти-оксидантного захисту. Зокрема, встановлено вiрогiдне тдвищення активностi каталази, супероксиддисмутази, глутатiо-нпероксидази, рiвня вiдновленого глутатiону, втамту А та втамту Е в кровi молодняку великоI рогатоI худоби, яким здшснювали кадмieве навантаження. Вказат змти вiдбуваються завдяки комплексны ди складнитв препарату «Метiсе-вт», що призводить до нормалiзацu метаболiчних та втьно радикальних процеав в органiзмi бугайщв. Одержан резуль-тати до^джень вказують про антиоксидантну дю препарату «Меткевт» при застосуванш його молодняку великоI рогатоI худоби та про обтрунтоватсть його введення з метою тдвищення антиоксидантного статусу оргатзму при хротчному кадмieвому токсикозi.
Ключовi слова: фармакологiя, токсикологiя, бугайщ, антиоксидантна система, препарат «Метiсевiт», вiдновлений глутатюн, втамт Е, втамт А, каталаза, супероксиддисмутаза, глутатiонпероксидаза.
Влияние препарата «Метисевит» на активность ферментного и неферментного звена антиоксидантной защиты организма бычков в условиях кадмиевой нагрузки
Б.В. Гутый, Ю.Ю. Лавришин, В.Я. Бинкевич, Е.М. Бинкевич, А.Р. Паладийчук, Ю.С. Стронский, И.И. Харив
bvh@ukr.net
Львовский национальный университет ветеринарной медицины и биотехнологий имени С.З. Гжицкого,
ул. Пекарская, 50, г. Львов, 79010, Украина
В статье приведены результаты исследований влияния хлорида кадмия на показатели ферментной и неферментной системы антиоксидантной защиты у молодняка крупного рогатого скота, а именно на активность каталазы, суперок-сиддисмутазы, глутатионпероксидазы, уровень восстановленного глутатиона, витаминов А и Е. Установлено, что скармливание бычкам данного токсиканта в дозе 0,04 мг/кг массы тела активность каталазы, супероксиддисмутазы, глутати-онпероксидазы, уровень восстановленного глутатиона, витаминов А и Е в крови подопытных животных в течение всего опыта снижался. Самый низкий уровень показателей системы антиоксидантной защиты в крови молодняка крупного рогатого скота установлено на двадцать четвертые сутки опыта, что связано с усиленной активацией процессов липо-пероксидации и нарушением равновесия между активностью антиоксидантной системы и интенсивности перекисного окисления липидов. В условиях кадмиевого нагрузки, молодняка крупного рогатого скота применяли новый комплексный препарат с антиоксидантным действием «Метисевит», в состав которого входят метифен, селенит натрия и витамин Е. Выявлено стимулирующее влияние препарата на активность системы антиоксидантной защиты. В частности, установлено достоверное повышение активности каталазы, супероксиддисмутазы, глутатионпероксидазы, уровня восстановленного глутатиона, витамина А и витамина Е в крови молодняка крупного рогатого скота, которым осуществляли кадмиевую нагрузку. Указанные изменения происходят благодаря комплексному действию составляющих препарата «Метисевит», что приводит к нормализации метаболических и свободно радикальных процессов в организме бычков. Полученные результаты исследований указывают о антиоксидантном действии препарата «Метисевит» при применении его молодняку крупного рогатого скота и обоснованности его введения с целью повышения антиоксидантного статуса организма при хроническом кадмиевом токсикозе.
Ключевые слова: фармакология, токсикология, бычки, антиоксидантная система, препарат «Метисевит», восстановленный глутатион, витамин Е, витамин А, каталаза, супероксиддисмутаза, глутатионпероксидаза.
Introduction
Due to the intensive development of science and technology progress over the past decades the number of chemical compounds to which human and animal contact has increased significantly. Especially dangerous is pollution with heavy metals, at a high biological activity, particularly cadmium and its salts (Honskyy et al., 2001; Melnychuk et al., 2004; Gutyj, 2012).
Oxide and reduction reactions occupy an important role in the metabolic changes and their violation play an important and sometimes decisive role in the development of pathological processes. The processes of oxidation in the liver have very important role, where their participation is carried performing its basic body functions, including disposal of endo- and exotoxins. Toxic liver cadmium damages are accompanied by significant flow disturbances oxidative reactions that are characterized by some researches as «oxidative stress» (Honskyy et al., 2001; Gutyj, 2013).
Having established that during cadmium toxicity occurs enhance lipid peroxidation (Gutyj, 2013; Gutyj, 2015), we concluded that the action of cadmium to suppress excessive free radical reactions in animals, it is necessary to use drugs with a strong antioxidant effect that can inhibit processes of peroxidate oxidation of lipids. With a large number of antioxidants in cadmium toxicosis bull, we studied the «Metisevit» prophylactic effect. This drug blocks the free radicals and prevents the development of oxidation stress in animals.
The purpose of our research was to determine the effect of the drug «Metisevit» on the level of enzyme and nonenzyme system of antioxidant defense of the body in conditions of chronic bull cadmium toxicity.
Material and methods
Research were carried on farm in village Ivanivtsi, Zhydachiv district, Lviv region with 10 bulls six months
of age, black and white breed that were formed into 2 groups ( 5 animals in each):
Group 1 - control (C), calves were fed with food cadmium chloride at a dose of 0.04 mg/kg body weight;
Group 2 - research (R), calves fed with food cadmium chloride at a dose of 0.04 mg/kg body weight along with «Metisevit» at a dose of 0.36 g/kg feed.
When conducting research we followed the rules required when performing experiments on selection zootechnical and animal analogues in groups, technology procurement, use and accounting of consumed feed. The diet of the animals was balanced in nutrients and minerals that ensure their basic need for batteries.
Antioxidant drug «Metisevit» was developed at the Department of Pharmacology and Toxicology Lviv National Stepan Gzhytskyi University of Veterinary Medicine and Biotechnology which incorporates contains «Metifen», vitamin E and selenium. These components enhance each other's action and promote a better balance in the normalization of complex «System of antioxidant defense ^ Peroxidate oxidation of lipids».
The experiment lasted for 30 days. Blood for analysis were taken from the jugular vein in the 1-, 8-, 16-, 24-, and 30 th day of the experiment.
The activity of glutation peroxydase is determined by V.V. Lemeshko and others (Lemeshko et al., 1985); kata-lase activity (K.F. 1.11.1.6) - after the method of M.A. Korolyuk (Koroljuk et al., 1988); the activity of superoxide dismutase (SOD) (K.F. 1.15.1.1) - after the method (Chevari et al., 1985), reduced glutathione content was determined by the method (Butler et al., 1982), vitamins A and E were determined in blood plasma by
Thus, normalization of glutathione peroxidase in blood of calves after entering metisevit drew the first day, and the highest enzyme activity is set to the twenty-fourth and thirty-day of experiment.
Superoxide dysmutase - is one of the key enzymes of antiradical protection, which refers to the direct action of antioxidants. This enzyme rutes superoxideradical to peroxide, which is less toxic to the previous. Actually so SOD plays a crucial role in the antioxidant protection of almost all types of cells that are in contact with oxygen. SOD is primarily in the mitochondrial matrix, the cytosol and the cytoplasm (Gutyj, 2013).
For chronic cadmium toxicity in bulls on the first day of the experiment the activity of superoxide dismutase in
high performance liquid chromatography (Vlizlo et al., 2012).
Results and discussion
Glutathione peroxidase (GP) - is an enzyme that protects the body from oxidative damage. It catalyzes the recovery and restoration of lipid peroxides hydrogen and peroxide to water. In these reactions the enzyme oxidezes glutathione. Furthermore, glutathione peroxidase takes place in redox regulation of various metabolic processes. Over 70% of GP is localized in the cytosol and 25 - 30% - in the mitochondrial matrix (Gutyj, 2013).
From the data presented in Table 1 it is shown that under conditions of chronic cadmium toxicity glutathione peroxidase activity in blood serum in animal control group on the first day of the experiment, has increased by 3% compared to the indices of blood taken prior after feeding with cadmium chloride. The lowest enzyme activity was on the twenty-fourth day of the experiment and was 27,7 ± 1,24 nmol NADPH/min. to 1 mg of protein. Subsequently, the research activity of the enzyme gradually increased, and on the thirtieth day was 31,1 ± 1,20 nmol NADPH/min. to 1 mg of protein.
After applying metisevit in bulls experimental group the activity of glutathione peroxidase increased, on the eighth day, according to 16%. On the sixteenth day of the experiment, the activity of the enzyme in the experimental group of calves was 36,1 ± 1,25 nmol NADPH/min. to 1 mg of protein. Later, glutathione peroxidase activity in blood serum of calves in experimental group continued to rise, and on the twenty-fourth day of the experiment it increased by 32%.
Table 1
the serum of animals in the control group increased by 10% compared to the initial values. Later in patients bulls enzyme activity began to decline according to the eighth day of the experiment it was 0,52 ± 0,011 cu / Mg protein. The low activity of the enzyme was on the twenty-fourth day of the experiment, where a relatively initial value is decreased by 35% (Table 2).
In the bull, which together with the investigational toxin were fed drug «Metisevit», superoxide dismutase activity increased throughout the experiment on the values of the control group animals. On the eighth and sixteenth day of the experiment enzyme activity in the experimental group of animals was higher by 17 and 41% relative values of the control group animals.
The activity of glutathione peroxidase in the blood of bulls after feeding metisevit after chronic cadmium
toxicity; ^ ± m, n = 5)
Time of blood tests (day) Glutathione peroxidase (mmol NADPH / min per 1 mg of protein)
Groups of animals
control Pilot control Pilot
The original size 36,6 ± 1,23 36,2 ± 1,20
The first day 37,8 ± 1,21 36,9 ± 1,35
The eighth day 31,0 ± 1,13 35,9 ± 1,18**
The sixteenth day 29,0 ± 1,15 36,1 ± 1,20**
The twenty-fourth day 27,7 ± 1,24 36,5 ± 1,30**
The thirtieth day 31,1 ± 1,20 36,6 ± 1,25**
Note: The degree of probability according the control group -p <0,05- *, p> 0.01 - **
Table 2
Activity of superoxide dismutase in bulls' blood after feeding them with drug «Metisevit» for chronic cadmium _ toxicity; (M ± m, n = 5)_
Time of blood tests (day) Superoxide dismutase (u / mg protein)
Groups of animals
control group research group
The original size 0,62 ± 0,012 0,63 ± 0,011
The first day 0,68 ± 0,014 0,67 ± 0,012
The eighth day 0,52 ± 0,011 0,61 ± 0,012*
The sixteenth day 0,44 ± 0,011 0,62 ± 0,010**
The twenty-fourth day 0,40 ± 0,010 0,63 ± 0,011**
The thirtieth day 0,46 ± 0,012 0,64 ± 0,013**
The action of SOD is associated with the action of catalase,if one enzyme increases, the other not, so it contribute to the formation of large amounts of free radicals and increased lipid peroxidation.
Catalase recovers hydrogen peroxide to water. To the active center of the enzyme is trivalent iron protoporphyrin, which interacts with hydrogen peroxide by catalase, or peroxidase mechanism, depending on the concentration of the substrate. The enzyme is found in all tissues at a concentration of 10-6 M. Generally, the action of catalase is
For chronic cadmium toxicity it was founded reduced activity of catalase in the blood of animals in the control group. The activity of this enzyme was decreased on the eighth day of the experiment to 5%, on the sixteenth day -13% compared to the initial values.
On the twenty-fourth day of the experiment catalase activity in blood of animals which were fed with food cadmium chloride was low and accordingly was 5,65 ± 0,11 units. On the thirtieth day of experiment, the enzyme activity increased slightly, but remained at a low level.
The use of «Metisevit» contributed to the increase catalase activity in blood of experimental animals. On the eighth day of the experiment enzyme activity increased by 5% for the values of the control group animals. On the sixteenth day of the experiment catalase activity in experimental group amounted to 6,50 ± 0,15 units. On the twenty-fourth day of the experiment indicated in these animals likely increased activity of the enzyme on the values of the control group animals at 15% respectively. On the thirtieth day of the experiment catalase activity in the first experimental group ranged within physiological values.
reduced to decrease the concentration of cytotoxic hydroxyl radicals. The highest catalase activity was found in the red blood cells, liver, kidneys. For high intensity formation of hydrogen peroxide in the body, he cleared catalase, and the low - glutatin antioxidant system (Gutyj, 2013).
So, catalase as the mechanism of action of antioxidant system defense refers to direct action. The activity of catalase in bull's blood serum in conditions of chronic cadmium toxicity and exposure to the drug "Metisevit" is shown in Table 3.
Table 3
Thus, the drug «Metisevit» contributed to increasing activity of catalase, superoxide dismutase and that in animals play an important role in lipid peroxidation.
Glutathione is a major component of glutation antioxidant defense system. It consists of three amino acids: glutamic, cysteine and glycine. Glutathione does not only protect cells from toxic compounds and free radicals, but also defines the status of intracellular redox environment. In addition, it increases the resistance of cells to the negative effects of stress factors and is involved in the removal of xenobiotics. Actually so, glutathione is a key element in antioxidant system because it is able to restore other antioxidants (Gutyj, 2013).
Table 4 shows the changes in the level of reduced glutathione in the blood of bulls in cadmium stress. As can be seen from the table data glutathione level at the beginning of the experiment was within the physiological norm values. After feeding with cadmium chloride content of reduced glutathione began to decline. The lowest indicator was on the twenty- fourth day of the experiment, which according to the original values it decreased by 8%.
The activity of catalase in blood after feeding bulls with drug «Metisevit» for chronic cadmium toxicity; _(M±m, n = 5)_
Time of blood tests (day) Catalase (units)
Groups of animals
control group research group
The original size 6,55 ± 0,12 6,54 ± 0,16
The first day 6,46 ± 0,13 6,51 ± 0,15
The eighth day 6,22 ± 0,12 6,52 ± 0,16*
The sixteenth day 5,75 ± 0,14 6,50 ± 0,15**
The twenty-fourth day 5,65 ± 0,11 6,51 ± 0,14**
The thirtieth day 5,93 ± 0,12 6,57 ± 0,12*
Table 4
The level of reduced glutathione in the blood of bulls after feeding «Metisevit» _after chronic cadmium toxicity, mg % (M ± m, n = 5)_
Time of blood tests (day) Groups of animals
Control group Research group
The original size 31,95 ± 0,58 33,14 ± 0,55
The first day 34,21 ± 0,62 33,38 ± 0,75
The eighth day 30,99 ± 0,60 33,55 ± 0,76*
ThesSixteenth day 29,95 ± 0,65 33,61 ± 0,55**
The twenty-fourth day 29,49 ± 0,55 33,33 ± 0,65**
The thirtieth day 30,25 ± 0,65 33,30 ± 0,50*
The use of animal drug «Metisevit» contributed to raising the level of reduced glutathione in the blood of experimental animals on the eighth day of the experiment by 8%, on the sixteenth day - 12%. The most probable changes in the level of reduced glutathione in the experimental group of animals was founded on the twenty-fourth day of the experiment, in which the figure was 33,33 ± 0,65 mg%, and it was 13% greater than the value of the control group animals.
Equally important in antioxidant system include vitamin E, which protects cell membranes from attack of free radicals and reactive oxygen species. Its content in
The applying of the drug «Metisevit» made the rising of vitamins, that were investigated in the blood of experimental animals feeding with toxicants. On the eighth day of the experiment it was founded increased content of vitamin E relative values of the control group of animals in research of blood by 45% respectively. Most likely increase vitamin was founded on the twenty-fourth day of the experiment.
We demonstrated that after the development of chronic cadmium toxicity in young cattle, vitamin A in their blood decreases. As can be seen from the data in Table 6, vitamin A after feeding with cadmium chloride
the blood of animals by chronic cadmium toxicity is shown in Table 5. Feeding toxicant above helped to reduce the content of vitamin E in the blood of animals throughout the experiment. So, on the eighth day of experiment vitamin content was 3,3 ± 0,11 mmol/l, which is lower to 20% compared to the initial values. On the sixteenth day of vitamin E studies continued to decline and relative quantities of blood taken at the beginning of the experiment, that is for feeding bulls with cadmium chloride, decreased to 24%, the twenty-fourth day of the experiment vitamin E decreased to 29%.
5
began to fall on the first day to 4%, on the eighth day -12%, on the sixteenth day - 16%, on the twenty-fourth day of the experiment - 27% relative initial values.
The use of experimental animals the drug of «Metisevit» boosted vitamin A in the blood of bulls under conditions of cadmium loading. Since the first day of the experiment we founded a gradual increase in the content of vitamin A in the blood of experimental animals Ratios control group of animals. On the sixteenth and twenty-fourth day of the experiment vitamin A increased by 28 and 40% compared to the control group of animals.
Table 6
The content of vitamin A in the blood of bulls after feeding with drug «Metisevitu»
by chronic cadmium toxicity, mmol/l (М ± m, n = 5)
Time of blood tests (day) Groups of animals
control group research group
Start value 0,81 ± 0,030 0,82 ± 0,031
The first day 0,78 ± 0,018 0,82 ± 0,035*
The eighth day 0,71 ± 0,018 0,84 ± 0,035**
The sixteenth day 0,67 ± 0,014 0,86 ± 0,029**
The twenty-fourth day 0,59 ± 0,014 0,85 ± 0,030**
The tirtieth day 0,65 ± 0,018 0,84 ± 0,025**
Table
Vitamin E in the blood of bulls after feeding drug «Metisevit» by chronic cadmium toxicity, _mmol/l (М ± m, n = 5)_
Time of blood tests (day) Grou ps of animals
control group research group
The original size 4,1 ± 0,11 4,1 ± 0,12
The first day 3,8 ± 0,14 4,7 ± 0,10**
The eighth day 3,3 ± 0,11 4,8 ± 0,15**
The sixteenth day 3,1 ± 0,11 4,9 ± 0,12**
The twenty-fourth day 2,9 ± 0,12 4,8 ± 0,13**
The thirtieth day 3,1 ± 0,13 4,5 ± 0,12**
Thus, the applying of drug «Metisevit» for bulls who were under cadmium stress were contributed to the increase of antioxidants in nonenzyme system of antioxi-dation defense, such as vitamin A and vitamin E.
Overall, we received the research results indicating that feeding of bulls with drug «Metisevit» positively influences the antioxidant defense system in their body.
Conclusions
1. When feeding bulls with cadmium chloride at a dose of 0.04 mg/kg body weight and level indicators of nonenzyme and enzyme systems of antioxidant defense in the blood of experimental bulls decreased throughout the experiment. The lowest level of indexes in antioxidant system installed on the twenty fourth day of the experiment, which deals with enhanced activation of lipid peroxidation and the imbalance between the activity of antioxidant system and lipid peroxidation intensity.
2. The drug «Metisevit» in cadmium stress activates the enzyme and nonenzyme system of antioxidant defense system in bull's body, as it is indicated by increased activity of glutathione peroxidase, catalase, superoxide dismutase and glutathione increase of vitamins A and E in the blood of animals. Addition of «Metisevit» in feeding prevents the oxidation stress, that cause peroxide damages in cell membranes and the intracellular biopolymers.
Prospects for further researches. The results of research will be applied in subsequently studies of antioxidant defense and processes of lipid peroxidation in the blood of the bull to develop antidote drug for the treatment of animals in cadmium toxicosis.
References
Honskyy, Ya.I., Yastremskaya, S.O., Boychuk, B.R. (2001). Vikovi osoblyvostsi porushennya peroksyd-noho okyslennya lipidiv i aktyvnosti enerhozab-ezpechuvalnyh fermentiv pry kadmiyeviy intoksykatsiyi [Age features breach of lipid peroxidation and activity of enzymes in utility cadmium intoxication] Medichna chimiya - Medical Chemistry. 3(1), 16-19 (in Ukrainian). Gutyj, B.V. (2012). Vplyv hlorydu kadmiju na intensyv-nist' procesiv perekysnogo okysnennja lipidivtastan systemy antyoksydantnogozahystu organizmu shhuriv. Visnyk Sums'kogo nacional'nogo agrarnogo universytetu. Serija : Veterynarna medycyna. 7, 31-34 (in Ukrainian). Gutyj, B.V. (2013). Riven' pokaznykiv nefermentnoi' systemy antyoksydantnogo zahystu organizmu bychkiv za umov kadmijevogo navantazhennja. Naukovyj visnyk L'vivs'kogo nacional'nogo universytetu veterynarnoi' medycyny ta biotehnologij im. G'zhyc'kogo. 15, 1(4), 40-45 (in Ukrainian). Gutyj, B.V. (2013). Vmist vitaminiv A i E u krovi bychkiv za umov kadmijevoi' intoksykacii'. Visnyk Sums'kogo nacional'nogo agrarnogo universytetu. Serija : Veterynarna medycyna. 2, 31-33 (in Ukrainian).
Gutyj, B.V. (2013). Vplyv E-selenu na aktyvnist' glutationovoi' systemy antyoksydantnogo zahystu
organizmu bugajciv pry kadmijevomu navantazhenni. Visnyk Sums'kogo nacional'nogo agrarnogo universytetu. Serija : Veterynarna medycyna. 9, 70-73 (in Ukrainian).
Gutyj, B.V. (2013). Vplyv E-selenu na vmist vitaminiv A i E u krovi bychkiv za umov kadmijevoi' intoksykacii'. Naukovyj visnyk L'vivs'kogo nacional'nogo universytetu veterynarnoi' medycyny ta biotehnologij im. G'zhyc'kogo. 15, 3(3), 311-314 (in Ukrainian).
Gutyj, B.V. (2013). Vplyv meveselu na vmist vitaminiv A i E u krovi bychkiv za umov kadmijevoi' intoksykacii'. Naukovyj visnyk L'vivs'kogo nacional'nogo universytetu veterynarnoi' medycyny ta biotehnologij im. G'zhyc'kogo. 15, 3(1), 78-82 (in Ukrainian).
Gutyj, B.V. (2013). Vplyv meveselu ta E-selenu na riven' pokaznykiv ne fermentnoi' systemy antyoksydantnogo zahystu organizmu bugajciv pry kadmijevomu navantazhenni. Veterynarna medycyna. 97, 419-421 (in Ukrainian).
Gutyj, B.V. (2013). Vplyv preparatu «Mevesel» na aktyvnist' enzymnoi' ta neenzymnoi' lanok antyoksydantnoi' systemy organizmu bugajciv za umov hronichnogo kadmijevogo toksykozu. Biologija tvaryn. 15(4), 39-46 (in Ukrainian).
Gutyj, B.V. (2015). Aktyvnist' systemy antyoksydantnogo zahystu organizmu bychkiv za gostrogo kadmijevogo toksykozu. Naukovyj visnyk L'vivs'kogo nacional'nogo universytetu veterynarnoi' medycyny ta biotehnologij im. G'zhyc'kogo. 17, 1(1), 31-36 (in Ukrainian).
Gutyj, B.V., Murs'ka, S.D., Gufrij, D.F., Hariv, I.I., Levkivs'ka, N.D., Nazaruk, N.V., Gajdjuk, M.B., Pryjma, O.B., Bilyk, O.Ja., Guta, Z.A. (2016). Vplyv kadmijevogo navantazhennja na systemu antyoksydantnogo zahystu organizmu bugajciv. Visnyk Dnipropetrovs'kogo universytetu. Biologija, ekologija. 24(1), 96-102 (in Ukrainian).
Melnychuk, D.O., Melnikova, N.M., Derkach, E.A. (2004). Vikovi osoblyvosti kumulyatsiyi kadmiyu v orhanah toksykovanyh schuriv i zminyu pokaznykivi kislotno-luzhnohogo stanu krovi za riznyh umov antyoksydantnoho zahystu orhanizmu [Age characteristics of cadmium accumulation in organs toksykovanyh rats and changes in rates of acid-base balance of blood under different conditions antioxidant body] Ukr. biochim. jurnal - Ukr. Chem. Journal, 76(6), 95-99 (in Ukrainian).
Melnychuk, D.O., Trachtenberg, I.M., Melnikova, N.M., Kalinin, I.V., Shepeleva, I.A., Derkach, E.A. (2002). Toksykolohichnyy vplyv soley svyntsyu ta kadmiyu na bioihimichni pokaznyky i laboratornyh tvaryn [Toxicological effects of lead and cadmium salts on bioihimichni parameters in laboratory animals] Naukovyy visnyk NAU. Scientific Bulletin of the NAU. 55, 117-119 (in Ukrainian).
Butler, E., Dubra, A., Kelly, B. (1982). Metodika opre-deleniya urovnya vostanovlenogo glutationa v eri-trotsitah krovi [Tekst] metodicheskie rekomendatsii po differentsialnoy diagnostike razlichnyh form ishemicheskoy bolezn serdtsa s ispolzovaniem opre-deleniya komponentov glutationovoy, pro-tivoperekisnoy katalicheskoy sistemy v eritrotsitah
krov [Methods of determining the level of glutathione in repairing the red blood cells [Text]: guidelines for the differential diagnosis of various forms of ischemic heart disease using the definition of the components of glutathione, protivoperekisnoy catalyzed system eritrotsitah blood]. Odessa, 16-20 (in Russian).
Koroljuk M.A., Ivanov L.I., Mayorov I.G., Tokarev V.E. (1988). Method opredeleniya aktivnosti katalazy. Lab. delo. 1, 16-18 (in Russian).
Lemeshko, V., Nikitenko, Y., Lankin, V. (1985). Fermenty utilizatsii godroperoksidov i O2 v miokarde krys raznogo vozrasta. Byul. eksp. biol. i mead. 5,
563-565 (in Russian). Chevari, S., Csaba, I., Szekely, J. (1985). Rol superoxide v okislitelnyh protsessah kletki i metod opredeleniya ee v biologicheskih materialah. Lab. delo. 11, 678681 (in Russian). Vlizlo, V.V., Fedoruk, R.S., Ratych, I.B. (2012). Laboratorni metody doslidzhen' u biologii', tvarynnyctvi ta veterynarnij medycyni: dovidnyk. L'viv: Spolom (in Ukrainian).
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