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1.
The aim of the study was to investigate the influence of administration of chlorpyrifos and/or enrofloxacin on the activity of chosen antioxidative enzymes i.e.: superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GPx) in erythrocytes of rats. Chlorpyrifos was administered by stomach tube during 28 days at a dose of 3 mg/kg bw (0.02 LD50), and enrofloxacin was administered by stomach tube at a dose of 5 mg/kg bw during 3 subsequent days. It was stated that administration of enrofloxacin at applied dose did not cause any major changes in the activity of investigated antioxidative enzymes. The four-week exposure of rats to chlorpyrifos caused noticeable decrease in SOD and CAT activity in erythrocytes of rats at the beginning of the experiment (up to 24th hour) in comparison with the control group. The activity of GPx during all periods of the experiment was increased. In the group of animals in which both chlorpyrifos and enrofloxacin were applied, the profile of changes in activity of examined enzymes was similar to that one, which was observed after administration of chlorpyrifos exclusively, what may indicate lack of co-action between compounds used in the experiment. 相似文献
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The study was aimed at determining the dimethoate residues in the liver and acetylcholinesterase (AChE) activity in blood of rats exposed to dimethoate (individual intoxication), and dimethoate and pyrantel embonate (simultaneous intoxication). The experiment was carried out in two stages where various doses of preparations and exposure manners were used. In the first stage of the experiment, dimethoate (1/25 LD50) was administered to animals per os for 28 days, and pyrantel embonate (1/2 LD550) twice, i.e. on the day 14th and 28th. In the second stage, dimethoate was administered for 5 days (1/10 LD50), and pyrantel embonate (1/5 LD50) on day 3, 4 and 5 from the beginning of dimethoate intoxication. The short presence of the dimethoate residues in the liver of the animals examined was found until the 2nd day after 28-day intoxication (1/25 LD50) and until 14th day after 5-day intoxication (1/10 LD50), however, a distinct decrease in this insecticide residues in the liver of (analysed groups of) rats occurred between the 3rd hour and the 2nd day after exposure. Dimethoate in both applied doses significantly reduced AChE activity in blood. After application of the higher dose, the inhibition of AChE was more pronounced, and the return of its activity to physiological values lasted considerably longer. Co-administration of pyrantel embonate and dimethoate, slightly influenced changes of the parameters analysed, which have been dependent not only on a dose and manner of pyrantel application but also on time which lapsed from exposure. 相似文献
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Dengsheng Sun Xiao Jin Irene Camerlink Manman Tong Junling Su Fei Zhao Sumei Yan Binlin Shi 《Journal of animal physiology and animal nutrition》2019,103(3):738-746
Dietary Yucca schidigera extract (YSE) could enhance immune function in broilers, which was attributed primarily to its saponin components. However, YSE also contains phenolic compounds which possess antioxidant ability. This study tested the effects of YSE on growth performance of broilers, its antioxidative enzyme activities and corresponding gene expressions in the small intestine. A total of 128 15‐day‐old broilers were randomly assigned to 4 treatments: corn‐soya bean meal as the basal control diet or the basal diet containing either 100, 200 or 300 mg/kg of YSE. Each treatment consisted of four replicate pens with eight broilers per pen. The experiment lasted 28 days which was divided into a grower period (day: 15–28) and a finisher period (day: 29–42). On day 28 and day 42 body weight (BW), feed intake (FI) and feed conversion rate (FCR) were recorded. Duodenum, jejunum and ileum were collected to analyse superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx) activities, malondialdehyde (MDA) concentrations, total antioxidant capacity (T‐AOC) and gene expressions of SOD, CAT, GPx. The results showed that during the grower period a diet including 100 mg/kg YSE improved CAT capacity in the ileum, tended to increase activities of GPx in the duodenum, and further showed enhancing tendencies in SOD and GPx abilities in ileum. Gene expressions of CAT, SOD and GPx in the ileum tended to upregulate at 100 mg/kg YSE level. In the finisher period and over the whole period, all YSE groups had a reduced FI compared to the control group without compromising BW; 100 and 200 mg/kg YSE significantly improved FCR. In conclusion, the improved growth performance of broilers during the finisher period may be due to enhanced antioxidative ability in the grower period with YSE supplementation. This study provided evidence of using YSE as an additive to enhance growth in broilers. 相似文献
4.
The aim of this study was to determine the content of vitamin C in the liver of rats exposed to dimethoate or pyrantel embonate as well as co-intoxication with both agents. Investigations were carried out in two stages. At each stage, the rats were divided into three experimental groups (I-III) and a control (C) group. In the first stage, rats from group I were administered pyrantel embonate at a two-week interval at a dose of 1/2 LD50, while the animals from group II received dimethoate for 28 days at a dose of 1/25 LD50, and those from group III - both mentioned compounds in an identical manner as in groups I and II. In the second stage, the rats from group I received pyrantel embonate at a dose of 1/5 LD50 for 3 consecutive days, while the animals from group II received dimethoate at a dose of 1/10 LD50 for 5 consecutive days, and those from III received both compounds, but pyrantel was administered on day 3, 4 and 5 of dimethoate administration. The concentration of vitamin C after pyrantel embonate and dimethoate administration was influenced not only by doses of the compounds used but also by the manner of their application (single or co-administration). Dimethoate delivered at a dose of 1/25 LD50 evoked an increase in vitamin C concentration that was observed to continue up to the 14th day after the exposure, whereas when applied at a dose of 1/10 LD50 it increased the vitamin C level only at the 3rd hour. A considerable decrease in the vitamin C level was reported after pyrantel treatment at a dose of 1/5 LD50. In rats from groups where the compounds were co-administered, increased level of vitamin C was observed at both stages of the experiment only in the first period after intoxication, i.e. up to the 6th hour. 相似文献
5.
本试验旨在研究乐果(Dimethoate)对大鼠的毒性作用,探讨乐果中毒的氧化应激机制.将24只SD大鼠分成对照组和3个染毒组,分别以0、1、6、30 mg/kg体质量剂量灌服乐果,连续灌服30 d后,测定血浆和肝脏胆碱酯酶(ChE)活性及肝脏中超氧化物歧化酶(SOD)、谷胱甘肽过氧化物酶(GSH-Px)、过氧化氢酶(CAT)活性和丙二醛(MDA)含量,并观察肝脏组织学和超微结构变化.结果显示,乐果染毒后大鼠血浆和肝脏ChE活性均极显著降低(P<0.01);大鼠肝脏SOD活性呈上升趋势,而GSH-Px、CAT活性随染毒剂量增加呈先下降后上升趋势;各染毒组肝脏MDA含量均呈上升趋势;组织学和超微结构检查显示肝细胞脂肪变性、凋亡等.结果表明.大鼠乐果持续染毒可以诱导机体脂质过氧化增强,并导致肝脏结构损伤,说明氧化应激在乐果的肝脏毒性中发挥重要作用. 相似文献
6.
Equine protozoal myeloencephalitis (EPM) is the most important protozoal disease of horses in the United States. Some horse owners and equine clinicians believe that horses which are on daily pyrantel tartrate at 2.64mg/kg for helminth prophylaxis are less likely to develop EPM. The present study examined the efficacy of pyrantel tartrate in preventing clinical disease in gamma-interferon gene knockout (BALB/c-Ifng(tm1ts)) mice. No activity was seen against sporocyst-induced Sarcocystis neurona infections in mice treated prophylacticly with 4-5mg pyrantel tartrate per mouse per day in the drinking water. 相似文献
7.
Cenesiz S Yarim GF Karabulut AB Ara C 《DTW. Deutsche tier?rztliche Wochenschrift》2007,114(9):345-348
The aim of this study was to evaluate the role of antioxidant enzyme activity and nitric oxide levels induced by 28 day biliary obstruction in the rat. A total of 21 young Swiss albino rats were divided in to 3 groups. Bile duct ligations, bile duct ligations plus resveratrol, sham operated. Bile duct ligations plus resveratrol group received 10 mg/kg dose of resveratrol intraperitonealy once daily throughout for 28 days. Liver damage and cholestasis were determined by biochemical examination. SOD, CAT and GSH-PX activity decreased in BDL group compared with shame opareted groups (p < 0.001). NO levels increased in BDL groups compared with shame opareted groups (p < 0.001). SOD, CAT and GSH-PX activity was found higher in BDL+resveratrol treated groups than BDL groups (p < 0.001). In addition this NO levels decreased in BDL+resveratrol treated groups than BDL groups (p < 0.001). In conclusion, it is thought that resveratrol may be used as a protective agent in biliary obstructions; however, further clinical and experimental studies are needed to verify its antioxidative and hepatoprotective effects. 相似文献
8.
Mousa HM Al-Qarawi AA Ali BH Abdel Rahman HA ElMougy SA 《Journal of veterinary medicine. A, Physiology, pathology, clinical medicine》2002,49(10):531-534
Fifteen adult female goats were orally exposed to 5.46 mg lead (as lead acetate) per kg body weight daily for 2 weeks to study the antioxidant enzymes of the erythrocyte, lipid peroxide level, total thiol groups and total antioxidant status (TAS) in plasma. Ten goats served as unexposed control. Blood samples were collected before exposure (day 0) and on days 7 and 14. Ten per cent erythrocyte haemolysate was prepared and analysed for glutathione peroxidase (GPx), superoxide dismutase (SOD), catalase (CAT), total thiol groups and lipid peroxide. TAS was determined in plasma. There was a significant (P < 0.05) increase of erythrocytic GPx, SOD, CAT, total thiol groups and TAS on day 7 which was followed by a significant (P < 0.05) decrease of all these parameters on day 14. Lipid peroxide level increased significantly (P < 0.05) and the maximum level was attained by day 14. The results obtained indicate a possible role of free radicals in lead poisoning pathogenicity. 相似文献
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光周期可以影响动物体内褪黑素(MLT)的分泌,而MLT能参与机体多种生理功能的调节。本试验旨在研究光周期对山羊MLT分泌、免疫和抗氧化功能及相关基因表达的影响。将18只6月龄雌性绒山羊随机分为3组:对照(CG,自然光周期)组、短光照(SDPP,光照8 h/d,黑暗16 h/d)组和渐减光照(SIPP,光照时间从16 h/d逐渐缩短到8 h/d)组。试验期为60 d。结果表明:与对照组相比,1)在试验第30天,SDPP显著增加了血清MLT含量(P<0.05),在试验第60天,SIPP显著增加了血清MLT含量(P<0.05);2)在试验第30天,SDPP组血清总超氧化物歧化酶(T⁃SOD)、谷胱甘肽过氧化物酶(GPx)和过氧化氢酶(CAT)活性显著升高(P<0.05),丙二醛(MDA)含量显著降低(P<0.05),而SIPP组上述指标均无显著变化(P>0.05);在试验第60天,SDPP组和SIPP组血清T⁃SOD、GPx和CAT活性均显著升高(P<0.05),MDA含量显著降低(P<0.05);3)在试验第30天,SDPP显著提高了血清免疫球蛋白G(IgG)、白细胞介素-1β(IL⁃1β)和白细胞介素-2(IL⁃2)含量(P<0.05);在试验第60天,SDPP和SIPP均显著提高了血清IgG含量(P<0.05),此外,SDPP显著提高了血清IL⁃1β、IL⁃2和肿瘤坏死因子-α(TNF⁃α)含量(P<0.05),而SIPP仅显著提高了血清IL⁃1β含量(P<0.05);4)在基因表达方面,在试验第30天,SDPP显著上调了白细胞中SOD1、GPx1、GPx4、CAT、核转录因子2(Nrf2)、IL⁃1β、和IL⁃2基因相对表达量(P<0.05);在试验第60天,SDPP组白细胞中SOD1、CAT、GPx4、IL⁃1β和IL⁃2基因相对表达量显著提高(P<0.05),SIPP组白细胞中SOD1、GPx1、CAT、IL⁃1β和IL⁃2基因相对表达量显著提高(P<0.05)。上述结果表明,持续短光照能分泌更多的MLT,提高山羊的免疫和抗氧化功能。 相似文献
12.
The aim of the study was the electrophoretical identification of molecular forms of selected antioxidant enzymes in dog semen. Ejaculates to be studied were chosen from five dogs, aged from two to eight years. Polyacrylamide gel electrophoresis was carried out under non-denaturing conditions and then gels were stained for the activity of the following enzymes: superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GPx). Sperm homogenates and all fractions (pre-spermatic, spermatic and post-spermatic) of dog ejaculate demonstrated one protein band with SOD activity characterized by low electrophoretic mobility. Based on the confirmed sensitivity to H2O2, it can be assumed that the detected SOD is an enzyme containing ions of Zn2+ and Cu2+ (Cu,Zn SOD). In sperm homogenates one protein band with GPx activity was characterized by high electrophoretic mobility, whereas in the spermatic and post-spermatic fractions of dog ejaculate three protein bands with different (low, medium and high) electrophoretic mobility were identified. CAT molecular forms were not found in either sperm homogenates or in the analyzed fractions of ejaculate. 相似文献
13.
铅胁迫对三种暖季型草坪草生长和生理特性的影响 总被引：1，自引：0，他引：1
采用盆栽试验,研究了铅胁迫对假俭草、狗牙根与结缕草3种暖季型草坪草生长和生理特性的影响。通过向土壤中添加不同浓度的铅,研究铅积累对草坪外观质量、生物量、相对含水量、叶片电导率、叶绿素含量及抗氧化酶系统的影响。实验结果表明,随着铅胁迫浓度的增加,3种草坪草外观质量、根系生物量、相对含水量及叶绿素含量同对照相比均显著下降,地上部生物量下降幅度相对较小,而叶片中的电导率显著增加。不同浓度铅胁迫下,3种草内3种保护酶的反应程度不同。 在各个铅胁迫水平下,假俭草叶片SOD活性逐渐升高,在20 d时达到最大值;CAT活性自处理后5 d时相比对照显著升高,此后基本维持在同一水平;而只有在2000和4000 mg/kg铅胁迫水平下,POD活性显著升高,处理后25 d时达到最大值。狗牙根在各胁迫水平下,SOD活性自处理后5 d时均升高,25 d时骤升至最大值;在15 d时CAT活性达到最大值; POD活性均呈现上升趋势。结缕草叶片SOD活性在最高胁迫水平下处理5 d后急剧升高,15 d时达到最大值;POD活性均呈现先上升后降低的趋势,25 d时达到最大值;CAT活性先升高后降低,在15 d时达到最大值。对照3种草坪草对铅胁迫的响应变化具有差异,通过分析得出3种草坪草对铅抗性能力依次排序为:狗牙根>结缕草>假俭草。 相似文献
14.
Characteristics of Antioxidant Systems of Yellow Fraction of Red Deer's (Cervus elaphus L.) Semen During the Rutting Period 
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下载免费PDF全文 M Koziorowska‐Gilun M Szurnicka A Dziekonska W Kordan Z Giżejewski K Filipowicz 《Reproduction in domestic animals》2016,51(2):248-254
The objective of this study was to make the preliminary characterization of the antioxidant defence systems of the yellow fraction (YF) of red deer's (Cervus elaphus L.) semen during the rutting period. The semen was collected using artificial vagina (AV). The studies included spectrophotometric determination of antioxidant enzymes activities such as superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GPx). We also analysed the contents of low‐molecular antioxidants such as L‐glutathione (GSH + GSSG), L‐ascorbate (ASC) and total antioxidant status (TAS). Additionally, the samples were subjected to PAGE and stained for SOD and GPx activities. It was demonstrated that the yellow fraction exhibited activities of SOD and GPx, with the highest activities in September and October. CAT activity was not detected. Staining for the SOD and GPx activities confirmed three protein bands with SOD activity and one protein band with GPx activity. The content of GSH + GSSG was similar in trials dating from October to December contrary to the content of ASC which was high in samples from September and October. The stable rate of TAS was observed during the whole rutting period. The results of this study showed that the YF of red deer semen is equipped with basic battery of antioxidant enzymes comprising SOD and GPx, with the supporting role of GSH + GSSG and ASC. Moreover, the samples obtained at the peak of the rutting period occurring from September to October had the highest enzymatic activity in comparison with remaining months of the rutting period, which contributed to the high quality of the semen by preventing it from the formation of oxidative stress during the short period of intense sexual activity of male red deer. The better understanding of the mechanisms of antioxidant defence systems in the YF of deer's semen may contribute to the potential use of this fraction in technology of wild ruminant semen preservation. 相似文献
15.
Brazik EL Luquire JT Little D 《Journal of the American Veterinary Medical Association》2006,228(1):101-103
CASE DESCRIPTIONS: 16 horses treated daily with pyrantel tartrate (2.64 mg/kg [1.2 mg/lb], PO) as part of a prophylactic anthelmintic program. CLINICAL FINDINGS: Fecal worm egg counts (FWECs) were obtained on all 16 horses. Mean FWEC was 478 eggs/g (epg; range, 0 to 4,075 epg). Three of the 16 horses were responsible for 85% of the total fecal egg output for the herd on the day of sampling. Six horses had FWECs < 200 epg. Three horses that had arrived within 4 months of the sampling date had FWECs < 100 epg. TREATMENT AND OUTCOME: An FWEC reduction test was initiated the day after FWECs were obtained; all horses with FWECs > 100 epg (9 horses) were treated with pyrantel pamoate (6.6 mg/kg [3 mg/lb], PO), and 14 days later, the FWEC was repeated. During the 14-day period, all horses received pyrantel tartrate (2.64 mg/kg, PO) daily. Fecal worm egg count reduction was calculated for each horse. Mean FWEC reduction for the group was 28.5% (range, increase of 21% in FWECs 14 days after treatment to a decrease of 100% in FWEC 14 days after treatment). CLINICAL RELEVANCE: Farms should be monitored for cyathostomes resistant to pyrantel pamoate prior to use of pyrantel tartrate. Fecal worm egg counts should be monitored routinely in horses before and after treatment to ensure efficacy of cyathostome control measures. 相似文献
16.
不同品种苜蓿叶片离体干旱胁迫过程中抗氧化酶活性动态 总被引：4，自引：0，他引：4
以国内外20个优良紫花苜蓿Medicago sativa品种为材料,研究了离体干旱胁迫下叶片过氧化氢酶(CAT)、过氧化物酶(POD)和超氧化物歧化酶(SOD)活性对干旱胁迫的响应,探讨了抗氧化酶活性变化与抗旱性的关系,并结合草产量对其抗旱性进行了综合评价.结果表明,抗旱性强的品种在干旱胁迫下草产量高,叶片CAT、POD和SOD活性存有率高.依据上述4项指标,通过系统聚类分析,将 20个紫花苜蓿品种分为抗旱性强、较强、中等和弱4个等级. 相似文献
17.
Szczubiał M Kankofer M Łopuszyński W Dabrowski R Lipko J 《Journal of veterinary medicine. A, Physiology, pathology, clinical medicine》2004,51(7-8):336-340
The aim of the present study was to describe some of the oxidative stress parameters in bitches suffering from spontaneously occurring mammary gland tumours. The experiment involved 28 bitches which had mammary gland tumours removed surgically (15 bitches with malignant tumour and 13 with benign tumour) as well as 10 clinically healthy bitches. The activities of glutathione peroxidase (GSH-Px) and superoxide dismutase (SOD) were determined in haemolysates of erythrocytes derived from the animals. The concentrations of thiobarbituric acid reactive substances (TBARS), as well as -SH groups, were determined in blood plasma. GSH-Px activity was significantly higher in the malignant tumour group than in healthy animals. SOD activity was significantly higher in animals with tumours compared with the control group. Activities of both enzymes were higher in animals with malignant tumours than in benign groups, but the differences were not statistically significant. The concentrations of TBARS and -SH groups were similar in all examined groups. The increase of antioxidative enzyme activities in these animals may suggest the activation of antioxidative defence mechanisms in mammary gland carcinogenesis. Moreover, it might indicate the participation of oxidative stress in malignancies. Further experiments involving more animals, with more frequent sample collection and the use of other oxidative stress markers are necessary. 相似文献
18.
Ni和Cu胁迫对骆驼蓬抗氧化酶活性的影响 总被引：1，自引：0，他引：1
采用温室盆栽法,研究Ni、Cu单一处理对金昌Ni/Cu尾矿库先锋植物骆驼蓬幼苗Ni、Cu积累、膜脂过氧化程度与抗氧化酶系统的影响。结果表明,骆驼蓬幼苗叶片及根部Ni、Cu含量随土壤介质中Ni、Cu含量的增加而增加,Ni主要富集在骆驼蓬的叶片,而Cu主要富集在骆驼蓬的根部;叶片及根部丙二醛(MDA)含量总体随Ni、Cu处理浓度升高而增加,膜脂过氧化程度加剧;Ni胁迫下,骆驼蓬叶片超氧化物歧化酶(SOD)、过氧化物酶(POD)、过氧化氢酶(CAT)、抗坏血酸酶(APX)和谷胱甘肽还原酶(GR)活性较对照均有所增强,共同组成植物体内一个有效的活性氧自由基(ROS)清除系统,根部SOD、APX和CAT活性受到抑制,POD和GR受诱导活性增强,在减轻Ni胁迫引起氧化损伤方面起重要作用;Cu胁迫下骆驼蓬叶片SOD、POD、CAT、APX及GR活性较对照均有所提高,减弱了Cu胁迫引起的氧化损伤;根部APX活性受抑制,SOD、POD、CAT及GR活性受诱导增强,在缓解Cu胁迫引起氧化损伤方面发挥重要作用。 相似文献
19.
本试验以酿酒酵母和枯草芽孢杆菌作为混合菌种发酵小麦麸皮,通过Amberlite XAD-2柱分离纯化制备麦麸阿魏酰低聚糖(feruloyl oligosaccharides,FOs),探讨麦麸FOs对敌草快(diquat)诱导的大鼠氧化应激是否有缓解作用。试验选用体重相近的断奶雄性大鼠48只,随机分为未攻毒组、攻毒组、攻毒+100 mg/kg BW麦麸FOs组、攻毒+200 mg/kg BW麦麸FOs组、攻毒+300 mg/kg BW麦麸FOs组和攻毒+100 mg/kg BW维生素C组,每组8个重复,每个重复1只鼠,各组大鼠均饲喂相同的商业饲料。麦麸FOs和维生素C配制成水溶液,采用灌胃的方式给予,未攻毒组、攻毒组用生理盐水替代,灌胃体积0.2 mL,连续灌胃15 d。灌胃结束当天,未攻毒组大鼠注射0.3 mL生理盐水,其他5组按0.1 mmol/kg BW的剂量腹腔注射0.3 mL敌草快。敌草快攻毒12 h后取样,分析各组大鼠血浆以及肝脏、肾脏和回肠中总抗氧化能力(T-AOC),过氧化氢酶(CAT)、超氧化物歧化酶(SOD)和谷胱甘肽过氧化物酶(GSH-Px)活性以及谷胱甘肽(GSH)和8-羟基脱氧鸟苷(8-OHd G)的含量。结果显示:1)通过混菌发酵小麦麸皮制备麦麸FOs,利用Amberlite XAD-2柱进行分离纯化,获得的麦麸FOs浓度为0.059 mmol/g。2)腹腔注射敌草快显著降低大鼠血浆中SOD活性和GSH含量(P0.05),显著降低大鼠肝脏中T-AOC,CAT、GSH-Px活性及GSH含量(P0.05),显著降低大鼠肾脏中T-AOC及CAT、SOD活性(P0.05),显著降低大鼠回肠中T-AOC,CAT、GSH-Px活性及GSH含量(P0.05),并显著提高大鼠血浆和各组织中8-OHd G含量(P0.05)。3)在敌草快引起的氧化应激状态下,灌胃一定剂量的麦麸FOs可以显著提高大鼠血浆中SOD(400 mg/kg BW)、GSH-Px活性(100和200 mg/kg BW)以及GSH含量(100和200 mg/kg BW)(P0.05),显著提高大鼠肝脏中T-AOC(100、200和400 mg/kg BW),CAT(200和400 mg/kg BW)、SOD(100、200和400 mg/kg BW)和GSH-Px活性(100、200和400 mg/kg BW)以及GSH含量(100、200和400 mg/kg BW)(P0.05),显著提高大鼠肾脏中T-AOC(400 mg/kg BW),CAT(200 mg/kg BW)和GSH-Px活性(200和400 mg/kg BW)以及GSH含量(400 mg/kg BW)(P0.05),显著提高大鼠回肠中T-AOC(200 mg/kg BW),SOD(400 mg/kg BW)和GSH-Px活性(100、200和400 mg/kg BW)以及GSH含量(100、200和400 mg/kg BW)(P0.05),显著降低血浆和各组织中8-OHd G含量(血浆、肾脏、回肠:100、200和400 mg/kg BW;肝脏:100 mg/kg BW)(P0.05);且灌胃200、400 mg/kg BW麦麸FOs后,大鼠血浆和组织中部分抗氧化相关指标可恢复到正常生理状态水平。综上所述,本试验制备的麦麸FOs可以通过有效提高大鼠血浆和组织中抗氧酶活性和GSH含量,降低DNA氧化应激代谢产物8-OHd G的含量,有效缓解由敌草快诱导产生的氧化应激。 相似文献
20.
本试验旨在研究茶多酚对玉米赤霉烯酮(ZEN)与脱氧雪腐镰刀菌烯醇(DON)联合染毒小鼠生殖毒性损伤的缓解作用。选取8周龄雄性昆明小鼠75只[体重(40±5)g],随机分成5组,每组分别灌服生理盐水(对照组)、200 mg/kg茶多酚(Ⅰ组)、1 mg/kg ZEN+0.5 mg/kg DON(Ⅱ组)、100 mg/kg茶多酚+1 mg/kg ZEN+0.5 mg/kg DON(Ⅲ组)和200 mg/kg茶多酚+1 mg/kg ZEN+0.5 mg/kg DON(Ⅳ组),每组15只。试验期28 d。在试验第1、14、28天,从每组随机抽取5只小鼠称重采样,检测小鼠精子质量、睾丸脏器系数、睾丸组织标志酶活性、血清性激素含量及睾丸组织氧化与抗氧化指标,并制作睾丸组织切片。结果表明:1)与对照组相比,Ⅱ组小鼠睾丸脏器系数、精子活率及数量、血清性激素含量显著降低(P<0.05),睾丸组织碱性磷酸酶(AKP)、乳酸脱氢酶(LDH)、γ-谷氨酰转移酶(γ-GGT)、过氧化氢酶(CAT)、超氧化物歧化酶(SOD)及谷胱甘肽过氧化物酶(GSH-Px)活性显著降低(P<0.05);精子畸形率、血清丙二醛(MAD)含量显著上升(P<0.05)。添加茶多酚后,小鼠的睾丸脏器系数、精子活率及数量、血清性激素含量、睾丸组织AKP、LDH、γ-GGT、CAT、SOD及GSH-Px活性显著上升(P<0.05),精子畸形率、血清MAD含量显著降低(P<0.05)。随着时间的推移,与第1天相比,Ⅰ组小鼠睾丸组织GSH-Px活性显著升高(P<0.05),Ⅱ组小鼠睾丸脏器系数、精子质量、睾丸组织标志酶活性、血清性激素含量、睾丸组织氧化与抗氧化指标均发生显著变化(P<0.05),Ⅲ组小鼠睾丸组织CAT及GSH-Px活性显著降低(P<0.05),Ⅳ组小鼠睾丸组织CAT活性显著降低(P<0.05)。2)睾丸组织病理切片显示染毒组小鼠睾丸生精小管基膜不完整,细胞排列紊乱,数量减少,体积缩小,细胞之间空泡化,管腔内精子数量减少,经茶多酚保护后得到改善。综上,茶多酚能有效改善ZEN与DON联合染毒小鼠精子质量与睾丸组织内标志酶活性,提高血清性激素含量及睾丸组织抗氧化功能,显著降低生殖毒性。 相似文献