scholarly journals Reaction of the hemostatic system in response to hypercapnic hypoxia of maximum intensity ­depending on different types of preconditioning

2019 ◽  
Vol 100 (4) ◽  
pp. 642-649
Author(s):  
S V Moskalenko ◽  
I I Shakhmatov ◽  
I V Kovalev ◽  
K I Shakhmatova ◽  
V M Vdovin
Keyword(s):  
Anticoagulant Activity ◽  
Maximum Intensity ◽  
Male Rats ◽  
Control Group ◽  
Combined Exposure ◽  
Adaptive Changes ◽  
Hemostasis System ◽  
Hypercapnic Hypoxia ◽  
Ethylmethylhydroxypyridine Succinate ◽  
Plasma Unit

Aim. To study the adaptation reactions of the hemostasis system to hypercapnic hypoxia of maximum intensity in rats subjected to preliminary multiple exposure to ethylmethylhydroxypyridine succinate and hypercapnic hypoxia of submaximal intensity. Methods. In the experiment, Wistar male rats (80 individuals) were used. Training cycles: 30-fold daily exposure to hypercapnic hypoxia of submaximal intensity (20 minutes — 9.0±0.5% O2, 7.0±0.5% CO2); administration of ethylmethylhydroxypyridine succinate (50 mg/kg) to animals for 30 days; combined effects of the two described modes. Tested experimental exposure was simulated as a single hypercapnic hypoxia of maximum intensity (20 minutes — 5.0±0.5% O2, 5.0±0.5% CO2) at the end of each of three 30-day training cycles. Results. Preliminary 30-day exposure to both isolated hypercapnic hypoxia of submaximal intensity and combined exposure to ethylmethylhydroxypyridine succinate contributes to hypocoagulation shift in the hemostasis system and reduces the level of the markers of pre-thrombotic state in response to a single hypercapnic hypoxia of maximum intensity. The state of the hemostasis system after 30-day cycle of isolated use of an antihypoxant is characterized by the inhibition of the vascular-platelet system of the hemostasis system and preserved hypercoagulation shifts in its plasma unit. The obtained results suggest that both preliminary isolated effect of hypercapnic hypoxia of submaximal intensity and the combined effect of hypercapnic hypoxia and ethylmethylhydroxypyridine succinate increase the resistance of the hemostasis system in experimental animals to acute hypercapnic hypoxia of maximum intensity compared to rats of the control group. This was confirmed by the inhibition of the vascular-platelet system, hypocoagulation in the plasma unit, decrease in the level of thrombotic readiness markers and increase in the anticoagulant activity of the blood system compared to the control. At the same time, isolated course administration of ethylmethylhydroxypyridine succinate did not cause the same amount of adaptive changes to maximum intensity hypercapnic hypoxia, since only platelet suppression of the hemostasis and hypocoagulation via the internal coagulation pathway were registered. Conclusion. Isolated exposure of hypercapnic hypoxia of submaximal intensity and its combined exposure with ethylmethylhydroxypyridine succinate increase the resistance of the hemostasis system to acute hypercapnic hypoxia of maximum intensity; isolated course administration of ethylmethylhydroxypyridine succinate does not cause the same amount of adaptive changes.

scholarly journals Reaction of the hemostatic system in response to hypercapnic hypoxia of maximum intensity ­depending on different types of preconditioning

2019 ◽  
Vol 100 (4) ◽  
pp. 642-649
Author(s):  
S V Moskalenko ◽  
I I Shakhmatov ◽  
I V Kovalev ◽  
K I Shakhmatova ◽  
V M Vdovin
Keyword(s):  
Anticoagulant Activity ◽  
Maximum Intensity ◽  
Male Rats ◽  
Control Group ◽  
Combined Exposure ◽  
Adaptive Changes ◽  
Hemostasis System ◽  
Hypercapnic Hypoxia ◽  
Ethylmethylhydroxypyridine Succinate ◽  
Plasma Unit

Aim. To study the adaptation reactions of the hemostasis system to hypercapnic hypoxia of maximum intensity in rats subjected to preliminary multiple exposure to ethylmethylhydroxypyridine succinate and hypercapnic hypoxia of submaximal intensity. Methods. In the experiment, Wistar male rats (80 individuals) were used. Training cycles: 30-fold daily exposure to hypercapnic hypoxia of submaximal intensity (20 minutes — 9.0±0.5% O2, 7.0±0.5% CO2); administration of ethylmethylhydroxypyridine succinate (50 mg/kg) to animals for 30 days; combined effects of the two described modes. Tested experimental exposure was simulated as a single hypercapnic hypoxia of maximum intensity (20 minutes — 5.0±0.5% O2, 5.0±0.5% CO2) at the end of each of three 30-day training cycles. Results. Preliminary 30-day exposure to both isolated hypercapnic hypoxia of submaximal intensity and combined exposure to ethylmethylhydroxypyridine succinate contributes to hypocoagulation shift in the hemostasis system and reduces the level of the markers of pre-thrombotic state in response to a single hypercapnic hypoxia of maximum intensity. The state of the hemostasis system after 30-day cycle of isolated use of an antihypoxant is characterized by the inhibition of the vascular-platelet system of the hemostasis system and preserved hypercoagulation shifts in its plasma unit. The obtained results suggest that both preliminary isolated effect of hypercapnic hypoxia of submaximal intensity and the combined effect of hypercapnic hypoxia and ethylmethylhydroxypyridine succinate increase the resistance of the hemostasis system in experimental animals to acute hypercapnic hypoxia of maximum intensity compared to rats of the control group. This was confirmed by the inhibition of the vascular-platelet system, hypocoagulation in the plasma unit, decrease in the level of thrombotic readiness markers and increase in the anticoagulant activity of the blood system compared to the control. At the same time, isolated course administration of ethylmethylhydroxypyridine succinate did not cause the same amount of adaptive changes to maximum intensity hypercapnic hypoxia, since only platelet suppression of the hemostasis and hypocoagulation via the internal coagulation pathway were registered. Conclusion. Isolated exposure of hypercapnic hypoxia of submaximal intensity and its combined exposure with ethylmethylhydroxypyridine succinate increase the resistance of the hemostasis system to acute hypercapnic hypoxia of maximum intensity; isolated course administration of ethylmethylhydroxypyridine succinate does not cause the same amount of adaptive changes.

scholarly journals Reaction of hemostasis system in hypercapnic hypoxia after the course of mexidol assessed by the method of thromboelastography

2018 ◽  
Vol 99 (6) ◽  
pp. 936-941
Author(s):  
S V Moskalenko ◽  
I I Shakhmatov ◽  
Yu A Bondarchuk ◽  
O V Alekseeva ◽  
O M Ulitina
Keyword(s):  
Alpha Angle ◽  
Maximum Intensity ◽  
Clot Formation ◽  
Male Rats ◽  
Clot Lysis ◽  
Standard Diet ◽  
Single Exposure ◽  
Average Mass ◽  
Hemostasis System ◽  
Hypercapnic Hypoxia

Aim. To study the reaction of hemostasis system to a single effect of hypercapnic hypoxia of maximum intensity in rats and possibility of correcting hemostasis disorders by means of a preliminary course of an antihypoxant - mexidol. Methods. The study involved sexually mature male rats (48 specimens) of the Wistar line with an average mass of 274.0 ± 32.0 g. The rats were kept on a standard diet, food and water were fed once a day between 10 and 11 hours. In the evening, animals underwent a single hypercapnic hypoxia in a special flow chamber. The state of hypercapnic hypoxia of maximum intensity was modeled at O2 content of 5.0 %, CO2 - 5.0 % during a single 20-minute exposure. As a training regimen, a 30-fold course of mexidol was used, the drug was administered intraperitoneally to rats at a dose of 50 mg/kg for 1.5 hours prior to exposure to hypercapnic hypoxia. Results. After a single exposure to hypercapnic hypoxia of maximum intensity, shortening of the onset of clot formation, an increase of alpha angle, and maximum clot density were recorded. Also, the clot formation time shortened and the maximum clot lysis index increased. With a single exposure to hypercapnic hypoxia of maximum intensity after the course of mexidol, a decrease in the maximum clot density was recorded. Conclusion. A single exposure to hypercapnic hypoxia of maximum intensity was characterized by a shift of hemostatic potential toward hypercoagulability along with fibrinolytic system activation. The course use of antihypoxant mexidol, preceding hypercapnic hypoxia of maximum intensity, significantly reduces the risk of clot formation.

HEMOSTASIOLOGICAL PROFILE IN RATS UNDER SINGLE EXPOSURE TO SUBMAXIMAL AND MAXIMUM HYPERCAPNIC HYPOXIA

2020 ◽  
pp. 127-137
Author(s):  
S.V. Moskalenko ◽  
I.I. Shakhmatov ◽  
V.I. Kiselev ◽  
V.M. Vdovin ◽  
A.A. Blazhko
Keyword(s):  
Blood Plasma ◽  
Anticoagulant Activity ◽  
Male Rats ◽  
Simultaneous Increase ◽  
Fibrinogen Concentration ◽  
Single Exposure ◽  
Platelet Number ◽  
Hypercapnic Hypoxia ◽  
Aggregation Activity ◽  
In Blood Plasma

Hypoxia is the main link in the taxis pathogenesis to most extreme factors. It occurs in many pathological processes. The aim of the work was to study the hemostatic system in rats under a single exposure to submaximal and maximum hypercapnic hypoxia. Materials and Methods. The experiment enrolled 40 Wistar male rats. Single 20-minute hypercapnic hypoxia (HH) was modeled by placing the animals into a chamber with a gas mixture: submaximal HH: O2 – 9 %; CO2 –7 %; maximum HH: O2 – 5 %; CO2 – 5 %. Results. Single submaximal HH was accompanied by a decrease in the platelet number under a constant level of their aggregation activity. Hypercoagulable shift was observed along the internal pathway and at the final stage of coagulation against the decrease in fibrinogen concentration. AT III level decreased, however, there were no changes in blood APR. Single maximum HH led to more pronounced coagulable shifts. Platelet hemostasis responded by a decrease in the platelet number with a simultaneous increase in their aggregation activity. As for coagulation hemostasis, hypercoagulation was recorded at all stages of coagulation. At the same time, fibrinogen concentration in blood plasma decreased, and the level of soluble fibrin-monomer complexes (SFMCs) significantly increased. The authors reported an increase in plasma fibrinolytic activity. Conclusion. Thus, upon a single exposure to submaximal HH, hypercoagulation was not yet accompanied by thrombinemia markers. At the same time, the danger of thrombotic state development remained, since the hypercoagulable shift was recorded against a decrease in blood plasma anticoagulant activity. A further increase in HH intensity was accompanied by deteriorating hemostatic functions of experimental animals, which could be described as a state of thrombotic readiness. A decrease in the anticoagulant level in response to maximum HH exacerbated thrombosis risks. Keywords: hemostasis, hypercapnic hypoxia. Гипоксия выступает в качестве основного звена патогенеза ответной реакции организма на воздействие большинства экстремальных факторов и встречается во многих патологических процессах. Цель работы – изучить состояние системы гемостаза у крыс, подвергшихся однократному воздействию гиперкапнической гипоксии субмаксимальной и максимальной интенсивности. Материалы и методы. В эксперименте использовались крысы-самцы (40 особей) линии «Вистар». Однократная 20-минутная гиперкапническая гипоксия (ГКГ) моделировалась путем помещения животных в камеру, в которую подавалась смесь газов: ГКГ субмаксимальной интенсивности – 9 % О2, 7 % СО2; максимальной – 5 % О2, 5 % СО2. Результаты. Однократная ГКГ субмаксимальной интенсивности сопровождалась снижением количества тромбоцитов при неизменном уровне их агрегационной активности. Гиперкоагуляционный сдвиг отмечался по внутреннему пути и на конечном этапе свертывания на фоне снижения концентрации фибриногена. Уровень АТ III снижался, однако изменений со стороны АРП крови зафиксировано не было. Однократная ГКГ максимальной интенсивности приводила к более выраженным коагулологическим сдвигам. Тромбоцитарный гемостаз отреагировал снижением количества тромбоцитов при одновременном повышении их агрегационной активности. Со стороны коагуляционного гемостаза регистрировалась гиперкоагуляция на всех этапах свертывания. При этом концентрация фибриногена в плазме крови снижалась, уровень РФМК значительно повышался. Было зарегистрировано повышение фибринолитической активности плазмы крови. Выводы. Таким образом, по завершении однократного воздействия ГКГ субмаксимальной интенсивности гиперкоагуляция еще не сопровождалась появлением маркеров тромбинемии. При этом опасность развития тромботического состояния сохранялась, поскольку гиперкоагуляционный сдвиг регистрировался на фоне снижения антикоагулятной активности плазмы крови. Дальнейшее повышение интенсивности воздействия ГКГ сопровождалось ухудшением гемостатического статуса экспериментальных животных, что может быть охарактеризовано как состояние тромботической готовности. Снижение уровня антикоагулянта в ответ на ГКГ максимальной интенсивности увеличивало риск развития тромбообразования. Ключевые слова: гемостаз, гиперкапническая гипоксия.

Chronic immobilization stress induces anxiety-related behaviors and affects brain essential minerals in male rats

2020 ◽  
pp. 1-8
Author(s):  
Zafer Sahin ◽  
Alpaslan Ozkurkculer ◽  
Omer Faruk Kalkan ◽  
Ahmet Ozkaya ◽  
Aynur Koc ◽  
...  
Keyword(s):  
Immobilization Stress ◽  
Central Area ◽  
Essential Elements ◽  
Male Rats ◽  
Control Group ◽  
Male Wistar Rats ◽  
Swimming Test ◽  
The Brain ◽  
Center Area ◽  
Chronic Immobilization Stress

Abstract. Alterations of essential elements in the brain are associated with the pathophysiology of many neuropsychiatric disorders. It is known that chronic/overwhelming stress may cause some anxiety and/or depression. We aimed to investigate the effects of two different chronic immobilization stress protocols on anxiety-related behaviors and brain minerals. Adult male Wistar rats were divided into 3 groups as follows ( n = 10/group): control, immobilization stress-1 (45 minutes daily for 7-day) and immobilization stress-2 (45 minutes twice a day for 7-day). Stress-related behaviors were evaluated by open field test and forced swimming test. In the immobilization stress-1 and immobilization stress-2 groups, percentage of time spent in the central area (6.38 ± 0.41% and 6.28 ± 1.03% respectively, p < 0.05) and rearing frequency (2.75 ± 0.41 and 3.85 ± 0.46, p < 0.01 and p < 0.05, respectively) were lower, latency to center area (49.11 ± 5.87 s and 44.92 ± 8.04 s, p < 0.01 and p < 0.01, respectively), were higher than the control group (8.65 ± 0.49%, 5.37 ± 0.44 and 15.3 ± 3.32 s, respectively). In the immobilization stress-1 group, zinc (12.65 ± 0.1 ppm, p < 0.001), magnesium (170.4 ± 1.7 ppm, p < 0.005) and phosphate (2.76 ± 0.1 ppm, p < 0.05) levels were lower than the control group (13.87 ± 0.16 ppm, 179.31 ± 1.87 ppm and 3.11 ± 0.06 ppm, respectively). In the immobilization stress-2 group, magnesium (171.56 ± 1.87 ppm, p < 0.05), phosphate (2.44 ± 0.07 ppm, p < 0.001) levels were lower, and manganese (373.68 ± 5.76 ppb, p < 0.001) and copper (2.79 ± 0.15 ppm, p < 0.05) levels were higher than the control group (179.31 ± 1.87 ppm, 3.11 ± 0.06 ppm, 327.25 ± 8.35 ppb and 2.45 ± 0.05 ppm, respectively). Our results indicated that 7-day chronic immobilization stress increased anxiety-related behaviors in both stress groups. Zinc, magnesium, phosphate, copper and manganese levels were affected in the brain.

Effects of oestradiol benzoate (OeB) and human chorionic gonadotrophin (hCG) on the testes and accessory sex glands of the rat

1981 ◽  
Vol 96 (2) ◽  
pp. 273-280 ◽  
Author(s):  
Mridula Chowdhury ◽  
Robert Tcholakian ◽  
Emil Steinberger
Keyword(s):  
Treated Group ◽  
Inhibitory Effect ◽  
Male Rats ◽  
Plasma Testosterone ◽  
Control Group ◽  
Intact Male ◽  
Intact Control ◽  
Testosterone Levels ◽  
Oestradiol Benzoate ◽  
Direct Inhibitory Effect

Abstract. It has been suggested that treatment of intact male rats with oestradiol benzoate (OeB) causes an interference with testosterone (T) production by the testes by a direct inhibitory effect on steroidogenesis. To test this hypothesis, different doses (5, 10 or 25 IU) of hCG were administered concomitantly with 50 μg of OeB to adult intact or hypophysectomized male rats. The testicular and plasma testosterone, and serum hCG levels were determined. The sex accessory weights were recorded. In the intact OeB-treated group of animals, hCG stimulated both the secondary sex organs and plasma testosterone levels above the intact control group. However, in hypophysectomized animals, although plasma testosterone levels increased above that of intact controls, their secondary sex organ weights did not. Moreover, inspite of high circulating hCG levels, the testicular testosterone content and concentration remained suppressed in OeB-treated animals. The reason for such dichotomy of hCG action on OeB-treated animals is not clear at present.

Effect of Turmeric and Ginger on Lipid Profile in Male Rats Exposed to Oxidative Stress

2019 ◽  
Vol 10 (01) ◽  
Author(s):  
Eman A. Al-Rekabi ◽  
Dheyaa K. Alomer ◽  
Rana Talib Al-Muswie ◽  
Khalid G. Al-Fartosi
Keyword(s):  
Oxidative Stress ◽  
Hydrogen Peroxide ◽  
Drinking Water ◽  
Lipid Profile ◽  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Male Rats ◽  
Control Group ◽  
Very Low Density Lipoprotein ◽  
Low Density

The present study aimed to investigate the effect of turmeric and ginger on lipid profile of male rats exposed to oxidative stress induced by hydrogen peroxide H2O2 at a concentration of 1% given with consumed drinking water to male rats. Methods: 200 mg/kg from turmeric and ginger were used, and the animals were treatment for 30 days. Results: the results showed a significant increase in cholesterol, triglycerides, low density lipoprotein (LDL), very low density lipoprotein (VLDL), whereas it explained a significant decrease in high density lipoprotein (HDL) of male rats exposed to oxidative stress when compared with control group. the results showed a significant decrease in cholesterol, triglycerides, (LDL), (VLDL), whereas it explained a significant increase in (HDL) of rats treated with turmeric and ginger at dose 200 mg/kg when compared with male rats exposed to oxidative stress.

Effect of opioid peptides on liver function after patial hepatectomy

2018 ◽  
pp. 67-71
Author(s):  
А.В. Солин ◽  
А.Ю. Ляшев ◽  
Ю.Д. Ляшев
Keyword(s):  
Lactate Dehydrogenase ◽  
Liver Failure ◽  
Partial Hepatectomy ◽  
Opioid Receptors ◽  
Total Protein ◽  
Pronounced Effect ◽  
Male Rats ◽  
Control Group ◽  
Peptide Molecule ◽  
Selective Agonists

Цель исследования - сравнительный анализ влияния селективных агонистов отдельных классов опиоидных рецепторов на белковосинтетическую функцию печени, развитие цитолитического и холестатического синдромов у крыс, подвергшихся частичной гепатэктомии. Методика. Работа выполнена на 152 крысах-самцах Вистар массой 200-250 г. Частичную гепатэктомию выполняли по методу, описанному Higgins G.M. и Anderson R.M. с удалением 70% ткани печени. В плазме крови определяли концентрации общего белка, альбуминов, общего билирубина, активность аланинтрансаминазы (АЛТ), аспартаттрансаминазы (АСТ), лактатдегидрогеназы (ЛДГ) традиционными методами. Опиоиды: DAGO в дозе 6,3 мкг/кг, DSLET в дозе 10,0 мкг/кг, динорфин А (1-13) в дозе 20,1 мкг/кг, вводили внутрибрюшинно ежедневно 1 раз в сутки в течение 5 сут. эксперимента в объеме 0,2 мл. Контрольным животным аналогично вводили физраствор. Результаты. Удаление 70% ткани печени у крыс-самцов Вистар сопровождается развитием печеночной недостаточности, проявляющейся гипербилирубинемией, гипоальбуминемией, гипопротеинемией, повышением активности трансаминаз и лактатдегидрогеназы. Применение селективных агонистов опиоидных рецепторов у крыс, которым моделировали частичную гепатэктомию, оказывало гепатопротективное действие и снижало выраженность проявлений печеночной недостаточности, начиная с 3-х сут. после резекции. Активность трансаминаз, лактатдегидрогеназы и концентрация общего билирубина у животных, которым вводили опиоиды, были существенно ниже, чем в контрольной группе. Содержание общего белка и альбуминов было статистически значимо выше в группах, которые получали исследованные пептиды, по сравнению с контрольной группой на 7-е сут. после частичной гепатэктомии. Наиболее выраженное действие проявлял селективный агонист опиоидных мю-рецепторов DAGO. По нашему мнению, такое влияние пептидов объясняется присущими им антиоксидантным и антигипоксическим эффектами, что снижает повреждающее действие оперативного вмешательства на печень. Более выраженное влияние DAGO связано, по-видимому, с особенностями распределения опиоидных рецепторов или устойчивостью пептида к действию эндопептидаз благодаря модификациям в молекуле пептида. Заключение. Применение опиоидов стимулирует восстановление функциональной активности печени после частичной гепатэктомии. Наибольший эффект отмечается при введении мю-агониста DAGO. Aim. The aim of the study was to compare effects of selective agonists of opioid receptors from different classes on the protein-synthesizing function of liver and development of cytolytic and cholestatic syndromes in rats after partial hepatectomy. Methods. The study was conducted on 152 Wistar male rats weighing 200-250 g. The animals were subjected to partial hepatectomy according to the Higgins and Anderson method. Concentrations of total protein, albumin, total bilirubin, and activities of alanine aminotransferase, aspartate aminotransferase, and lactate dehydrogenase were measured in plasma using standard methods. The opioids, DAGO (6.3 mg/kg), DSLET (10.0 mg/kg), and dynorphin A (1-13) (20.1 mg/kg), were injected in 0.2 ml of saline daily for 5 days. Control animals were injected with 0.2 ml of saline for 5 days. Results. Resection of 70% of liver tissue resulted in development of liver failure as evidenced by hyperbilirubinemia, hypoalbuminemia, hypoproteinemia, and increased transaminase and lactate dehydrogenase activities. Selective agonists of opioid receptors administered to the rats after partial hepatectomy exerted a hepatoprotective effect and alleviated the signs of liver failure beginning from the 3 day after resection. Transaminase and lactate dehydrogenase activities were significantly lower in opioid-treated rats than in the control group. Levels of total protein and albumins were significantly higher in the groups injected with the study peptides compared to the control group on the 7 day after partial hepatectomy. The selective agonist of opioid m-receptors, DAGO, exerted the most pronounced effect. Apparently, the similar effects of peptides were due to their antioxidant and anti-hypoxic action, which alleviated the detrimental effect of liver surgery. The more pronounced effect of DAGO apparently resulted from peculiarities of opioid receptors distribution or peptide resistance to endopeptidase action due to modifications of the peptide molecule. Conclusion. Administration of opioids stimulated restoration of liver functional activity after partial hepatectomy. Injections of the m-agonist, DAGO, produced the most pronounced effect.

PROTECTIVE EFFECT OF SOME SALTS 2-AMINOETHANESULFONIC ACID IN AN EXPERIMENTAL MODEL OF DEGENERATIVE SPINAL CORD INJURY

2020 ◽  
pp. 41-47
Author(s):  
Semeleva E.V. ◽  
Blinova E.V. ◽  
Zaborovsky A.V. ◽  
Vasilkina O.V. ◽  
Shukurov A.S.
Keyword(s):  
Spinal Cord ◽  
Morphological Changes ◽  
Male Rats ◽  
Zinc Salt ◽  
Control Group ◽  
Morphological Studies ◽  
Cord Injury ◽  
The Central Nervous System ◽  
Acid Compound ◽  
Lateral Sclerosis

In this work, we studied the pharmacological activity of zinc and magnesium salts of 2-aminoethanesulfonic acid in white non-linear male rats with amyotrophic lateral sclerosis, which was modeled by neurotoxicantsimplication into the pelvic part of spinal cord. After the reproduction of the pathology in animals, the indices of motor activity were recorded in the Rotarod test, and morphological studies of spinal cord sections stained according to Nisl in the Belshovsky modification were carried out. It was shown that the magnesium salt of 2-aminoethanesulfonic acid (compound LHT-317) to a greater extent reduces the development of motor disorders in experimental animals compared with the control group on the 4th day of observation. The course of intravenous administration of the studied compounds of 2-aminoethanesulfonic acid did not inhibit morphological changes in the spinal cord that develop in degenerative-dystrophic pathology of the central nervous system: connections. Moreover, if, against the background of treatment with zinc salt, the total area of motor zones in animals of the experimental group exceeded that of control rats, then the number of motoneurons did not differ from the control.

Protective effect of green tea extract against cadmium-induced testicular damage in rats in respect of oxidant/antioxidant equilibrium and androgen production

2020 ◽  
Vol 21 (1) ◽  
pp. 31-35
Author(s):  
Basma El-Desoky ◽  
Shaimaa El-Sayed ◽  
El-Said El-Said
Keyword(s):  
Gene Expression ◽  
Single Dose ◽  
Green Tea ◽  
Serum Testosterone ◽  
Green Tea Extract ◽  
Male Rats ◽  
Controlled Study ◽  
Control Group ◽  
Testicular Damage ◽  
Tea Extract

Objective: Investigating the effect of green tea extract (GTE) on the testicular damage induced by cadmium chloride CdCl2 in male rats. Design: Randomized controlled study. Animals: 40 male Wistar rats. Procedures: Rats were randomly divided into four groups: A) control group (each rat daily received pellet diet); B) GTE group each rat daily received pellet diet as well as 3 ml of 1.5 % w/v GTE, C) CdCl2 group each rat was I/P injected a single dose of 1 mg/kg CdCl2, then daily received pellet diet, and D) CdCl2+GTE group each rat was I/P injected a single dose of 1 mg/kg CdCl2 then daily received pellet diet as well as 3 ml of 1.5 % w/v GTE. After 30 days, blood samples were collected for hormonal assays (testosterone, FSH, and LH). In addition, both testes were collected; one of them was used for quantification of 17-beta hydroxysteroid dehydrogenase III (17β-HSDIII) gene expression using a real-time PCR. The other testis was used for determination of catalase and reduced glutathione; GSH, Nitric oxide (NO) and malondialdehyde (MDA) levels. Results: CdCl2 decreased serum testosterone levels and its synthesis pathway (17β-HSDIII testicular gene expression). While antioxidants catalase and GSH were reduced, oxidants MDA were enriched in the testes of CdCl2-poisoned rats. This CdCl2-promoted testicular dysfunction was corrected via the administration of GTE to male rats. Conclusion and clinical relevance: GTE could be used as a remedy for protecting against CdCl2-induced testicular damage in male rats.

Effect of Opuntia dejecta (Salm-Dyck) flowers in liver of fructose-fed rats: Biochemicals, enzymatic and histological studies

2021 ◽  
pp. 096032712110134
Author(s):  
O Zouaoui ◽  
K Adouni ◽  
A Jelled ◽  
A Thouri ◽  
A Ben Chrifa ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Antioxidant Activity ◽  
Body Weight ◽  
Diabetes Type 2 ◽  
Male Rats ◽  
Control Group ◽  
Standard Drug ◽  
High Fructose ◽  
Group A ◽  
Histological Architecture

Phytochemical composition and antioxidant activity of flowers decoction at post-flowering stage (F3D) of Opuntia dejecta were determined. The obtained findings demonstrate that F3D has a marked antioxidant activity in all tested assays. Furthermore, the present study was designed to test the protective activity of F3D against induced Diabetes type 2 (DT2) in male rats. Those metabolic syndromes were induced by a high-fructose diet (HFD) (10% fructose solution) for a period of 20 weeks. F3D was administered orally (100 and 300 mg/kg body weight) daily for the last 4 weeks. Metformin (150 mg/kg body weight) was used as a standard drug and administrated orally for the last 4 weeks. The results showed a significant increase in blood glucose, triglycerides and hepatic markers (ALAT, ASAT and ALK-P) in HFD group. A significant increase in hepatic TBARS and a significant decrease in SOD, CAT and GPX were observed in fructose fed rats compared to control group. Administration of F3D showed a protective effect in biochemical and oxidative stress parameters measured in this study. Also, oral administration of F3D restored the histological architecture of rat liver in comparison with rats fed HFD. In conclusion, F3D attenuated hepatic oxidative stress in fructose-fed rats.

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