biochemical profile

  • 文章类型: Journal Article
    这项研究评估了卡梅琳娜油的急性和亚慢性毒性,一种富含多不饱和脂肪酸的著名油,可增强细胞免疫力和人体健康,在Wistar大鼠中。Wistar大鼠,每组5个性别,随机分为3组进行急性(14天)毒性研究,5组进行亚慢性(90天)毒性研究.在急性研究中,以5000mg/kg体重(BW)的单剂量口服施用紫花苜蓿油。阳性对照组单剂量5000mg/kgBW菜籽油灌胃。在亚慢性研究中,III-V组接受250、500和1000mg/kgBW的Camelina油,而第一组和第二组接受超纯水和500毫克/千克体重的菜籽油,分别。在整个实验过程中,临床体征,死亡率,监测体重。在亚慢性研究结束时,血液学,生物化学,并进行了组织病理学调查。给药Camelina油和Canola对试验大鼠的日增重没有显着影响(P>0.05)。用Camelina油治疗的雄性大鼠的血清钙水平降低,而磷水平升高。其他血液和生化指标在男女对照组和种子油组之间没有显着差异或剂量-反应效应(P<0.05)。此外,在动物尸检中,肝脏没有明显的病变,心,和任何剂量的肾脏器官。总之,结果表明,口服Camelina油不太可能有毒。因此,应该考虑未来人类营养发展的可能性。
    This study assessed the acute and sub-chronic toxicity of Camelina oil, a well-known oil rich in polyunsaturated fatty acids that enhance cellular immunity and human health, in Wistar rats. Wistar rats, 5 per sex per group, were randomly assigned to three groups for acute (14 days) toxicity studies and five groups for sub-chronic (90 days) toxicity studies. In the acute study, Camelina sativa oil was administered orally at a single dose of 5000 mg/kg of body weight (BW). The positive control group received a single dose of 5 000 mg/kg BW Canola oil by gavage. In the sub-chronic study, Groups III-V received 250, 500, and 1 000 mg/kg BW of Camelina oil, while Groups I and II received ultra-pure water and Canola oil at a dose of 500 mg/kg BW, respectively. Throughout the experiment, clinical signs, mortality, and body weight were monitored. At the end of the sub-chronic study, hematological, biochemical, and histopathological investigations were conducted. Administration of Camelina oil and Canola had no significant effect on daily weight gain (P > 0.05) of the test rats. Serum calcium levels decreased while phosphorous levels increased in male rats treated with Camelina oil. Other hematological and biochemical parameters showed no significant differences or dose-response effects between control and seed oil groups in both sexes (P < 0.05). Moreover, in animal necropsy, there were no apparent lesions in the liver, heart, and kidney organs in any of the doses administered. In conclusion, the results suggest that oral administration of Camelina oil is unlikely to be toxic. Therefore, the possibility for the development of future human nutrition should be considered.
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  • 文章类型: Journal Article
    凤眼莲仍然是对水生生态系统的重大威胁,并在全球范围内构成经济挑战。有趣的是,它的高营养价值和丰富的水体,使其成为有前途且具有成本效益的动物饲料来源。这项研究的目的是了解不同的E.crassipise内含率如何影响Doyogena绵羊和Woyto-Guji山羊当地品种的血液生化特征。十二只绵羊和十二只山羊在2*4随机交叉设计中使用两种物种,四种饮食,和四个阶段(15天适应加7天实验饮食),最后一天采集血样.饮食处理包括E.crassipise(0、25、50和75%)作为商业浓缩物的替代品。数据采用SAS软件工具PROCGLM进行分析,计算血清生化指标之间的Pearson相关系数。AST结果,ALB,GLB,AST/ALT,A/G显著(P<0.0001),ALP(P<0.005),和GLU(P<0.05)动物物种之间的差异,除了ALT,CREAT,TP,和UREA。绵羊的AST值较高,ALP,GLB,AST/ALT,CREAT,和UREA,除了A/G,ALB,ALT,和TP。在所有研究参数中,处理和处理物种的相互作用效应均未显示出变化。ALT和AST呈正相关,TP和ALB,A/G和ALB,ALT与AST/ALT呈负相关,绵羊的TP和A/G;GLB和A/G。此外,AST/ALT与ALT、AST、ALB与TP、A/G呈正相关;山羊ALB与TP和A/G呈负相关。结论是,用浓缩物代替E.crassipise对血清生化谱没有不利影响。
    Eichhornia crassipes remains a significant threat to aquatic ecosystems and poses economic challenges globally. Interestingly, its high nutritional value and abundance in water bodies, making it a promising and cost-effective source of animal feed. The purpose of the study was to see how varying inclusion rates of E. crassipise affected the blood biochemical profiles of Doyogena sheep and Woyto-Guji goat local breeds. Twelve sheep and twelve goats were used in a 2*4 randomized crossover design with two species, four diets, and four phases (15-day adaptation plus 7-day experimental diets), and on the last day blood sample collected. The dietary treatments included E. crassipise (0, 25, 50, and 75%) as a substitute for commercial concentrate. The data were analyzed using SAS software tool PROC GLM, and Pearson\'s correlation coefficient between serum biochemical indices was computed. Results of AST, ALB, GLB, AST/ALT, and A/G showed significant (P < 0.0001), ALP (P < 0.005), and GLU (P < 0.05) differences between species of animals, except for ALT, CREAT, TP, and UREA. Sheep had higher values for AST, ALP, GLB, AST/ALT, CREAT, and UREA, except for A/G, ALB, ALT, and TP. Among treatments and treatment species interaction effect did not show variation in all studied parameters. Positive correlations were observed between ALT and AST, TP and ALB, and A/G and ALB, negative correlations were observed between ALT and AST/ALT, TP and A/G; GLB and A/G in sheep. Furthermore, positive correlations were observed between AST/ALT with ALT and AST and ALB with TP and A/G; however, negative correlations were observed between ALB with TP and A/G in goats. It was concluded that substituting E. crassipise with concentrate had no adverse effect on the serum biochemical profile.
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  • 文章类型: Journal Article
    由于低检出率和未知生态分离株的出现,酵母感染对人类和动物医学具有挑战性。这项研究的目的是验证从动物获得的酵母和酵母样微生物的生化鉴定,将结果与显色介质和基质辅助激光解吸/电离飞行时间(MALDI-TOFMS)进行比较。在2023年1月至8月之间,使用Vitek®2Compact鉴定了怀疑有真菌病的动物样本中的酵母和酵母样分离物,华晨®念珠菌琼脂和MALDIBiotyper®MSP。共纳入39例,并获得45个隔离。新生隐球菌(15.5%,7/45),Meyerozymaguilliermondii(13.3%,6/45),近平滑念珠菌(11.1%,5/45),白色念珠菌和热带念珠菌(8.9%,每个4/45)是鉴定最多的生物。71.1%(32/45)的分离株与三种鉴定方法完全一致,对物种的分歧占17.8%(8/45),6.7%(3/45)的属和种分歧,4.4%(2/45),MALDI-TOF中没有匹配的模式来比较结果.生化方法在没有蛋白质组学的实验室是一个很好的选择,和显色介质通过检测混合感染增强诊断。必须实施监视,以改善对人类和动物之间共享的病原体的检测。
    Yeast infections are challenging human and animal medicine due to low rates of detection and the emergence of unknown ecology isolates. The aim of this study was to verify the biochemical identification of yeasts and yeast-like microorganisms obtained from animals comparing the results with chromogenic media and matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF MS). Between January and August 2023, yeast and yeast-like isolates from samples of animals with suspicion of mycosis were identified using Vitek® 2 Compact, Brilliance® Candida Agar and MALDI Biotyper® MSP. A total of 39 cases were included, and 45 isolations were obtained. Cryptococcus neoformans (15.5%, 7/45), Meyerozyma guilliermondii (13.3%, 6/45), Candida parapsilosis (11.1%, 5/45), Candida albicans and Candida tropicalis (8.9%, each one 4/45) were the most identified organisms. There was full agreement with the three identification methods in 71.1% (32/45) of the isolates, disagreement on species in 17.8% (8/45), disagreement on genus and species in 6.7% (3/45) and, in 4.4% (2/45), there was no matched pattern in MALDI-TOF to compare the results. Biochemical methods are a good option in laboratories where proteomics are not available, and chromogenic media enhances diagnostics by detecting mixed infections. Surveillance must be implemented to improve the detection of agents shared between humans and animals.
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  • 文章类型: Journal Article
    疟疾和血吸虫病是引起凝血功能紊乱的传染病,生化异常,和血小板减少症.疟疾和曼氏血吸虫共同感染会导致健康后果和合并症恶化。这项研究旨在比较疟疾和曼氏血吸虫共感染和疟疾感染对选定的生化和凝血谱的影响。和血小板计数。2022年3月30日至8月10日进行了一项基于机构的比较横断面研究。使用方便的采样技术将总共70个人纳入研究。采用湿式安装和KatoKatz技术检测粪便样本中的曼氏血吸虫。制备血膜用于检测疟原虫。在使用SPSS版本25进行分析之前,对数据进行了编码并输入到EpiData版本3.1中。在数据分析过程中使用独立的t检验。小于0.05的P值被认为具有统计学意义。丙氨酸转氨酶的平均值[SD],天冬氨酸转氨酶,肌酐,总胆红素,合并感染者的直接胆红素高于疟疾感染者。然而,合并感染者的总蛋白和葡萄糖平均值低于疟疾感染者.凝血酶原时间的平均值,国际正常化比率,而活化部分凝血活酶时间在合并感染者中明显延长,而与疟疾感染参与者相比,血小板计数较低。生化和凝血曲线,与疟疾感染的参与者相比,合并感染的血小板计数状态发生了变化。因此,应使用生化和凝血功能以及血小板计数检测来监测和管理与合并感染相关的并发症,并降低与合并感染相关的发病率和死亡率.
    Malaria and schistosomiasis are infectious diseases that cause coagulation disorders, biochemical abnormalities, and thrombocytopenia. Malaria and Schistosoma mansoni co-infection cause exacerbations of health consequences and co-morbidities.This study aimed to compare the effect of malaria and Schistosoma mansoni co-infection and malaria infection on selected biochemical and coagulation profiles, and platelet count. An institutional-based comparative cross-sectional study was conducted from March 30 to August 10, 2022. A total of 70 individuals were enrolled in the study using a convenient sampling technique. Wet mount and Kato Katz techniques were conducted to detect Schistosoma mansoni in a stool sample. Blood films were prepared for the detection of plasmodium. The data was coded and entered into EpiData version 3.1 before being analyzed with SPSS version 25. An independent t test was used during data analysis. A P-value of less than 0.05 was considered statistically significant. The mean [SD] of alanine aminotransferase, aspartate aminotransferase, creatinine, total bilirubin, and direct bilirubin in the co-infected was higher than in malaria infected participants. However, the mean of total protein and glucose in co-infected was lower than in the malaria infected participants. The mean of prothrombin time, international normalization ratio, and activated partial thromboplastin time in co-infected was significantly higher, while the platelet count was lower compared to malaria infected participants. Biochemical and coagulation profiles, and platelet count status in co-infection were changed compared to malaria infected participants. Therefore, biochemical and coagulation profiles and platelet count tests should be used to monitor and manage co-infection related complications and to reduce co-infection associated morbidity and mortality.
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  • 文章类型: Journal Article
    中药(TCM)广泛用于人类和动物,这对健康非常重要。中医影响机体免疫力和肠道菌群的变化。本研究旨在研究马饮食中添加红百兰神(HBLS)对血清生化特征的影响,抗氧化酶和肠道菌群。
    在这项研究中,选择了五匹马。在第0、14、28天,在第0、14和28天收集血液样本和粪便以分析肠道微生物群。血清生化和氧化还原指标。
    结果表明,在马的日粮中添加HBLS可显着降低丙氨酸转氨酶的水平,碱性磷酸酶,肌酸激酶和丙二醛(p<0.05,p<0.01),并显着增加了总抗氧化能力的活性,超氧化物歧化酶和过氧化氢酶(p<0.05,p<0.01)。与第14天相比,丙氨酸转氨酶水平,碱性磷酸酶和肌酸激酶显著下降;然而,连续饲喂HBLS28天的马过氧化氢酶水平显着增加(p<0.05,p<0.01)。进行α多样性分析,chao1(p<0.05),观察到的_规格,信仰\'pd和货物_覆盖率在喂HBLS的马匹中上调。共检测到24个差异属,在饮食中添加HBLS增加了芽孢杆菌的丰度,乳酸杆菌科,明串珠科,Christensenellaceae,肽链球菌科,粪杆菌,Erysipelotricaceae,吡喃杆菌,Sphaerochaeta,WCHB1-25,细菌,螺旋体,和醋杆菌科,虽然减少了空气球菌,EtOH8,合成单胞菌,Caulobacter,根瘤菌科,W22,丁烟菌科,和脱硫弧菌(p<0.05,p<0.01)。
    在饮食中添加HBLS可能是改善马健康的潜在有效策略。
    UNASSIGNED: Traditional Chinese medicine (TCM) is widely used in humans and animals, which is very important for health. TCM affects the body \'s immunity and changes in intestinal flora. This study was conducted to investigate the effects of dietary Hong-bailanshen (HBLS) supplementation in horses on serum biochemical profile, antioxidant enzymes and gut microbiota.
    UNASSIGNED: In this study, five horses were selected. On day 0, 14, 28, blood samples and feces were collected on days 0, 14, and 28 to analyse gut microbiota, serum biochemical and redox indexes.
    UNASSIGNED: The results showed that the addition of HBLS to horse diets significantly decreased the level of alanine aminotransferase, alkaline phosphatase, creatine kinase and malondialdehyde (p < 0.05, p < 0.01) and significantly increased the activity of total antioxidant capacity, superoxide dismutase and catalase (p  < 0.05, p  < 0.01). Compared with day 14, the levels of alanine aminotransferase, alkaline phosphatase and creatine kinase were significantly decreased; however, the level of catalase was significantly increased in the horses continuously fed with HBLS for 28 days (p  < 0.05, p < 0.01). Alpha diversity analysis was performed that chao1 (p  < 0.05), observed_specicies, faith\'pd and goods_coverage upregulated in the horses fed HBLS. A total of 24 differential genera were detected adding HBLS to diet increased the abundance of Bacillus, Lactobacillaceae, Leuconostocaceae, Christensenellaceae, Peptostreptococcaceae, Faecalibacterium, Erysipelotrichaceae, Pyramidobacter, Sphaerochaeta, WCHB1-25, Bacteria, Oscillospira, and Acetobacteraceae, while reduced Aerococcus, EtOH8, Syntrophomonas, Caulobacter, Bradyrhizobiaceae, W22, Succinivibrionaceae, and Desulfovibrio (p < 0.05, p < 0.01).
    UNASSIGNED: Adding HBLS to the diet could be a potentially effective strategy to improve horses\' health.
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  • 文章类型: Journal Article
    由于基于高繁殖力的遗传选择,仔猪宫内生长受限一直是养猪业的一个问题。这导致了体重不足仔猪数量的增加和存活率的恶化。这项研究的目的是提高对正常和IUGR仔猪出生后数小时在血液学变量方面的差异的认识,生化参数,和免疫球蛋白水平。评估两组,每组20只仔猪。对照组(N)由体重大于1500g的仔猪组成,IUGR组由重500-1000g且具有至少两个IUGR特征的仔猪组成。出生后72小时收集血样用于分析红细胞和白细胞参数,网织红细胞指数,血小板指数,生化参数,和免疫球蛋白水平。红细胞和网织红细胞的改变,较低的淋巴细胞计数,高胰岛素血症,IUGR仔猪存在较高的氧化应激(p<0.05)。相比之下,血清免疫球蛋白水平无差异(p>0.05)。可以得出结论,IUGR仔猪相对于正常体重仔猪的血液学和生化差异在出生时存在,表明免疫力可能发生变化。新陈代谢,和氧化还原状态;因此,IUGR仔猪可能更容易患病和未来的疾病,比如代谢综合征。
    Intrauterine growth restriction in piglets has been a problem in the pig industry due to genetic selection based on hyperprolificacy. This has led to an increase in the number of underweight piglets and a worsening of the survival rate. The goal of this study was to enhance the knowledge of differences between normal and IUGR piglets a few hours after birth in terms of haematological variables, biochemical parameters, and immunoglobulin levels. Two groups of 20 piglets each were assessed. The control group (N) was made up of piglets with weights greater than 1500 g, and the IUGR group consisted of piglets weighing 500-1000 g and with at least two IUGR features. Blood samples were collected 72 h after birth for analysis of the red and white blood cell parameters, reticulocyte indices, platelet indices, biochemical parameters, and immunoglobulin levels. Alterations in red blood cells and reticulocytes, a lower lymphocyte count, hyperinsulinemia, and high oxidative stress were observed in IUGR piglets (p < 0.05). In contrast, differences were not observed (p > 0.05) in the serum immunoglobulin level. It can be concluded that the haematological and biochemical differences in IUGR piglets with respect to normal-weight piglets are present at birth indicating possible alterations in immunity, metabolism, and redox status; therefore, IUGR piglets could be more vulnerable to illness and future disorders, such as metabolic syndrome.
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  • 文章类型: Journal Article
    海洋生态系统中的微塑料污染,以及它通过海洋生物之间的营养转移产生的负面影响,仍然是一个越来越令人担忧的问题。我们的研究调查了河口食物链模型中聚苯乙烯微塑料(MPs)的营养转移和个体影响,以卤虫为主要生物,凡纳滨对虾作为次生生物,和尼罗罗非鱼为三级生物。A.salina暴露于1μm聚苯乙烯微塑料(106个颗粒/毫升),还把它喂给了凡纳滨,which,反过来,被喂给O.niloticus.在24和48小时内研究了MPs转移。荧光显微镜检查证实了MPs存在于所有测试生物体的肠道和粪便物质中。组织病理学显示肠道上皮中的MPs,但没有转移到测试物种的其他组织。暴露于盐藻的MPs的生物富集系数为0.0029±0.0008(24h)和0.0000941±0.0000721(48h)。然而,凡纳麦乳杆菌的生物累积因子值为0.00012143±0.000009(24h)和0.0025899±0.0024101(48h),尼罗氏分别为0.154992±0.007695(24小时)和0.00972577±0.00589923(48小时)。尽管营养级之间的MP转移较低,通过所有测试物种的生化反应,诱导的应激是明显的。这意味着国会议员最终通过食物链到达人类的潜在风险。
    Microplastic contamination in marine ecosystems, and its negative effects through trophic transfer among marine organisms, remains a growing concern. Our study investigates the trophic transfer and individual impacts of polystyrene microplastics (MPs) in an estuarine food chain model, comprising Artemia salina as primary organism, Litopenaeus vanamei as secondary organism, and Oreochromis niloticus as tertiary organism. A. salina were exposed to 1 µm polystyrene microplastics (106 particles/ml), further it was fed to L.vannamei, which, in turn, were fed to O.niloticus. MPs transfer was studied over 24 and 48 h. Fluorescence microscopy confirmed MPs presence in the gut and fecal matter of all the test organisms. Histopathology revealed MPs in the gut epithelium, but did not translocate to other tissues of the test species. MPs exposed A.salina had a bioconcentration factor of 0.0029 ± 0.0008 (24 h) and 0.0000941 ± 0.0000721 (48 h). Whereas, the bioaccumulation factor values for L. vanamei were 0.00012143 ± 0.000009 (24 h) and 0.0025899 ± 0.0024101 (48 h), and for O.niloticus were 0.154992 ± 0.007695 (24 h) and 0.00972577 ± 0.00589923 (48 h). Despite low MPs transfer among trophic levels, the induced stress was evident through biochemical responses in all the test species. This implies the potential risk of MPs ultimately reaching humans via the food chain.
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  • 文章类型: Journal Article
    优化藻类生长和脂质生产率的有效策略对于用于各种应用的生物质的可持续生产至关重要。光管理已经成为一种有希望的方法,但是光强度之间的复杂关系,光谱质量,和藻类反应仍然知之甚少。这项研究调查了不同光质(蓝色,红橙色,和白色黄色)和强度(45-305μmol/m2·s)在莱茵衣藻上。红橙色光表现出最高的促进生物量生长和脂质生产力,在155μmol/m2·s和205μmol/m2·s时,比生长速率为1.968(d-1),生物量生产率为0.284(g/L/d),分别。在205μmol/m2·s~305μmol/m2·s的强度范围内,脂质质量分数范围从10.5%w/w到11.0%w/w,伴随着从68.6mg/L到74.9mg/L的脂质浓度。红橙色光积极影响碳水化合物的积累,而蓝光促进蛋白质合成。这些发现强调了优化光质量和强度以提高藻类生物量生产率和操纵生化组成的重要性。了解光参数与藻类生理之间的复杂关系将有助于可持续的藻类培养实践以及将微藻用作有价值的生物资源。
    Effective strategies to optimize algal growth and lipid productivity are critical for the sustainable production of biomass for various applications. Light management has emerged as a promising approach, but the intricate relationship between light intensity, spectral quality, and algal responses remains poorly understood. This study investigated the effects of different light qualities (blue, red-orange, and white-yellow) and intensities (45-305 μmol/m2·s) on Chlamydomonas reinhardtii. Red-orange light exhibited the highest promotion of biomass growth and lipid productivity, with specific growth rates of 1.968 (d-1) and biomass productivity of 0.284 (g/L/d) at 155 μmol/m2·s and 205 μmol/m2·s, respectively. Within the intensity range of 205 μmol/m2·s to 305 μmol/m2·s, lipid mass fractions ranged from 10.5% w/w to 11.0% w/w, accompanied by lipid concentrations ranging from 68.6 mg/L to 74.9 mg/L. Red-orange light positively influenced carbohydrate accumulation, while blue light promoted protein synthesis. These findings highlight the importance of optimizing light quality and intensity to enhance algal biomass productivity and manipulate biochemical composition. Understanding the complex relationship between light parameters and algal physiology will contribute to sustainable algal cultivation practices and the use of microalgae as a valuable bioresource.
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  • 文章类型: Journal Article
    我们调查了圈养中较大的大黄(Rheaamericana)的生化特征,并根据鸟类的性别对这些值进行了关联。从Mossor的一个繁殖地点收集了总共69份血清样本,巴西东北部,并分析以量化血清生化参数(总蛋白,白蛋白,胆固醇,钙,磷,尿酸,尿素,肌酐,ALP,AST,和CK)。这些鸟的尿素水平,肌酐,总胆固醇,天冬氨酸转氨酶,钙,和磷与报告的平纹和鸵鸟物种的值相似。按性别,雌性显示出较高的钙(3.5mmol/L)值(p<0.05),总胆固醇(7.5mmol/L),和尿酸(435.3μmol/L)比男性,具有3.1mmol/L,3.8mmol/L,390.7μmol/L,分别。这可以归因于饮食的差异,女性的生产阶段,或压力在采样时。数据显示了有关大朗斯健康的广泛生化结果,有助于该物种的兽医临床实践。
    We investigated the biochemical profile of greater rheas (Rhea americana) in captivity and correlated these values according to the birds\' sex. A total of 69 serum samples were collected from a breeding site in Mossoró, northeastern Brazil, and analyzed to quantify serum biochemical parameters (total protein, albumin, cholesterol, calcium, phosphorus, uric acid, urea, creatinine, ALP, AST, and CK). The birds had levels of urea, creatinine, total cholesterol, aspartate aminotransferase, calcium, and phosphorus similar to the values reported for ratite and ostrich species. By sex, females showed higher values (p < 0.05) of calcium (3.5 mmol/L), total cholesterol (7.5 mmol/L), and uric acid (435.3 μmol/L) than males, which had 3.1 mmol/L, 3.8 mmol/L, and 390.7 μmol/L, respectively. This can be attributed to the difference in diet, the productive phase of females, or stress at the time of sampling. The data present a wide spectrum of biochemical results regarding the health of greater rheas, contributing to the veterinary clinical practice of this species.
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  • 文章类型: Journal Article
    槲皮素是属于类黄酮的天然存在的植物色素;它包含在广泛的蔬菜和水果中。积累的证据表明槲皮素在保护某些疾病中的潜在用途。铅是一种剧毒的重金属,在环境中广泛传播,涉及广泛的行业。以前没有研究报道评估槲皮素对铅毒性的影响。因此,本研究是为了阐明槲皮素生物活性的某些方面,关于其对抗铅毒性引起的氧化应激的能力。为此,将60只雄性Wistar大鼠随机平均分为3组,每组20只;未经处理的对照动物(第1组),铅暴露的动物(第2组;每天通过口服管饲法以80mg/Kgb.w.的剂量暴露于铅),和第三组动物,暴露于铅并每天通过口服管饲法以350mg/Kgb.w的剂量接受槲皮素(铅暴露与接受槲皮素之间的间隔时间为10小时)。实验期为8周。与未处理的对照水平相比,暴露于铅的动物的所有测定的血液学和生化参数均发生了显着变化。暴露于铅的动物(第2组)表现出红细胞和总白细胞计数的显着下降,血红蛋白浓度,细胞体积百分比,总蛋白质,白蛋白和球蛋白。这些动物还公开了包括总硫醇在内的抗氧化剂标记物的水平显着降低,过氧化氢酶和谷胱甘肽.另一方面,这些动物的胆红素水平显着增加,尿素,肌酐,BUN,血清酶,H2O2和MDA。暴露于铅并给予槲皮素的动物(第3组)表现出这些参数的改善,在不同程度上恢复到未处理的对照水平。在改善血液和生化指标的基础上,结论是,槲皮素作为膳食补充剂可以有效地作为抗氧化剂,以抵消铅毒性引起的氧化应激并维持氧化剂抗氧化平衡。
    Quercetin is a naturally existing plant pigment belonging to the flavonoid group; it is contained in a wide range of vegetables and fruits. The accumulated evidence points to the potential uses of quercetin in protection of some disease conditions. Lead is one of the highly toxicant heavy metals that are widely spread in the environment and implicated in a wide spectrum of industries. No previous study has been reported to evaluate the effect of quercetin on lead toxicity. Therefore, the present study was conducted to elucidate some aspects of quercetin bioactivities in regard to its ability to combat the oxidative stress induced by lead toxicity. For this purpose, a total of sixty male Wistar rats were randomly and equally divided into three groups of 20 animals each; untreated control animals (group 1), lead-exposed animals (group 2; exposed to lead daily by oral gavage at the dose of 80 mg/Kg b.w.), and group 3 of animals, which were exposed to lead and daily received quercetin (10 h gap time between lead exposure and the receiving of quercetin) by oral gavage at the dose of 350 mg/Kg b.w. The experiment period was 8 weeks. All the assayed hematological and biochemical parameters of animals exposed to lead were significantly altered compared with the untreated control levels. Animals exposed to lead (group 2) exhibited significant decrements of the erythrocytic and total leucocytic counts, hemoglobin concentration, packed cell volume percent, total proteins, albumin and globulin. These animals also disclosed significantly decreased levels of antioxidant markers including total thiols, catalase and glutathione. On the other hand, these animals demonstrated significant increments in the levels of bilirubin, urea, creatinine, BUN, serum enzymes, H2O2 and MDA. Animals exposed to lead and given quercetin (group 3) exhibited improvement of these parameters, which were brought back at varying degrees toward the untreated control levels. Basing on the improvements of the assayed hematological and biochemical parameters, it was concluded that quercetin as a dietary supplement can act efficiently as an antioxidant to counteract the oxidative stress induced by lead toxicity and to maintain the oxidant antioxidant balance.
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