TBARS, thiobarbituric acid reactive substances

TBARS,硫代巴比妥酸活性物质
  • 文章类型: Journal Article
    未经批准:脓毒症是一个严重的全球健康问题,高发病率和死亡率。在脓毒症中,受影响的主要器官之一是肝脏。肝脏改变表征阴性预后。ω-3脂肪酸(ω3),二十碳五烯酸,和二十二碳六烯酸,是多不饱和脂肪酸主要家族的一部分。ω3已在研究中用作脓毒症治疗和非酒精性肝病的治疗。
    UNASSIGNED:我们旨在评估富含ω3的鱼油(FO)治疗对实验性败血症引起的肝脏变化和损害的影响。
    UNASSIGNED:使用Wistar大鼠的严重脓毒症模型。通过硫代巴比妥酸反应性物质的测试来评估肝组织中的氧化应激,2,7-二氢二氯荧光素二乙酸酯,过氧化氢酶,和谷胱甘肽过氧化物酶,在血清TBARS中,DCF,硫醇和,评估肝功能障碍,丙氨酸转氨酶和天冬氨酸转氨酶。使用H&E组织学评价肝组织损伤。
    未经证实:在评估肝脏组织的氧化应激时,在TBARS的测试中观察到保护作用,DCF,CAT,和GPx,当比较脓毒症与脓毒症+ω3组时。关于血清中的氧化应激,在TBARS中观察到用ω3治疗的保护作用,DCF,和硫醇分析,在脓毒症和脓毒症+ω3组之间的比较中。ω3在ALT分析中对血清生化参数也有有益的影响,肌酐,尿素,和乳酸,在脓毒症和脓毒症+ω3组之间的比较中观察到。
    未经证实:结果表明ω3在脓毒症期间作为肝脏保护剂具有抗氧化作用,减轻损伤和功能障碍。
    UNASSIGNED: Sepsis is a severe global health problem, with high morbidity and mortality. In sepsis, one of the main affected organs is the liver. Hepatic alterations characterize a negative prognostic. Omega-3 fatty acids (ω3), eicosapentaenoic acid, and docosahexaenoic acid, are part of the main families of polyunsaturated fatty acids. ω3 has been used in studies as sepsis treatment and as a treatment for non-alcoholic liver disease.
    UNASSIGNED: We aimed to evaluate the effects of treatment with fish oil (FO) rich in ω3 on liver changes and damage resulting from experimental sepsis.
    UNASSIGNED: A model of severe sepsis in Wistar rats was used. Oxidative stress in the liver tissue was evaluated by means of tests of thiobarbituric acid reactive substances, 2,7-dihydrodichlorofluorescein diacetate , catalase, and glutathione peroxidase, in the serum TBARS, DCF, thiols and, to assess liver dysfunction, alanine aminotransferase and aspartate aminotransferase. Hepatic tissue damage was evaluated using H&E histology.
    UNASSIGNED: In assessments of oxidative stress in liver tissue, a protective effect was observed in the tests of TBARS, DCF, CAT, and GPx, when compared the sepsis versus sepsis+ω3 groups. Regarding the oxidative stress in serum, a protective effect of treatment with ω3 was observed in the TBARS, DCF, and thiols assays, in the comparison between the sepsis and sepsis+ω3 groups. ω3 had also a beneficial effect on biochemical parameters in serum in the analysis of ALT, creatinine, urea, and lactate, observed in the comparison between the sepsis and sepsis+ω3 groups.
    UNASSIGNED: The results suggest ω3 as a liver protector during sepsis with an antioxidant effect, alleviating injuries and dysfunctions.
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  • 文章类型: Journal Article
    未经ASSIGNED:电子烟(电子烟)已成为全世界吸烟的流行方式。长期接触电子烟气雾剂可能会影响肺部健康。这项研究使用动物模型来探索暴露于电子烟气雾剂对肺部影响的时间过程。
    未经证实:在Balb/c小鼠暴露于电子烟气雾剂1小时/天(6次/周)1、2和4周后收集肺样品,并与假暴露对照进行比较。检查的生物标志物,包括炎症细胞,肿瘤坏死因子α(TNFα),白细胞介素-6(IL-6),白细胞介素-10(IL-10),还原型谷胱甘肽(GSH),氧化型谷胱甘肽(GSSG),谷胱甘肽过氧化物酶(GPx),过氧化氢酶,超氧化物歧化酶(SOD),和硫代巴比妥酸反应性物质(TBARS)。
    UNASSIGNED:动物暴露于电子烟气雾剂诱导总炎性细胞显著增加(P<0.05),嗜酸性粒细胞,暴露1、2和4周后肺组织中的巨噬细胞和TNFα。此外,IL-10水平显著下降,而嗜中性粒细胞和嗜碱性粒细胞在暴露1周后显著升高(P<0.05)。动物暴露于电子烟气溶胶也导致GSH/GSSG比率显着降低(P<0.05),暴露2周和4周后的GPx水平。接触4周后过氧化氢酶活性也降低(P<0.05)。TBARS水平随时间呈升高趋势,4周后达到显著升高(P<0.01)。
    UNASSIGNED:目前的结果表明,吸入未加味的电子烟气雾剂可能与肺组织炎症有关,随着暴露时间的增加,炎症会恶化。进一步的实验包括更多的时间点,需要进行组织病理学和肺生理学实验来证实目前的结果。
    UNASSIGNED: Electronic cigarettes (e-cigarettes) have become a popular way to smoke all over the world. Chronic exposure to e-cigarette aerosol may influence lung health. This study uses an animal model to explore the time course of the effect of exposure to e-cigarette aerosols on the lung.
    UNASSIGNED: Lung samples were collected after exposure of Balb/c mice to e-cigarette aerosols for 1 h/day (6 times/week) for 1, 2 and 4 weeks and compared to sham-exposed controls. Examined biomarkers including inflammatory cells, tumor necrosis factor α (TNFα), interleukin-6 (IL-6), interleukin-10 (IL-10), reduced glutathione (GSH), oxidized glutathione (GSSG), glutathione peroxidase (GPx), catalase, superoxide dismutase (SOD), and Thiobarbituric acid reactive substances (TBARS).
    UNASSIGNED: Exposure of animals to e-cigarette aerosols induced significant increases (P < 0.05) in total inflammatory cells, eosinophils, macrophages and TNFα in the lung tissue after 1, 2 and 4 weeks of exposure. Furthermore, level of IL-10 significantly decreased, whereas levels of neutrophils and basophils significantly increased (P < 0.05) after 1 week of exposure. Exposure of animals to e-cigarette aerosol also induced significant decreases (P < 0.05) in the GSH/GSSG ratio, and GPx levels after 2 and 4 weeks of exposures. The activity of catalase was also reduced (P < 0.05) after 4 weeks of exposure. Level of TBARS showed a trend of elevation with time and it reached a significant elevation after 4 weeks (P < 0.01).
    UNASSIGNED: Current results indicate that inhalation of unflavored e-cigarette aerosol might be associated with inflammation in lung tissue that worsen as the duration of exposure increases. Further experiments including more time points, histopathology and pulmonary physiology experiments are needed to confirm the current results.
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  • 文章类型: Journal Article
    武装冲突中遭受的伤害通常会导致带有嵌入金属碎片的伤口。标准的手术指导是将碎片留在原位,除非在某些情况下;这意味着个人可能会终生携带这些保留的碎片。由于武器设计的进步和简易爆炸装置的使用,可以在伤口中找到的金属清单是广泛的。在大多数情况下,这些金属嵌入体内时的毒理学特性是未知的。为了评估嵌入金属可能对周围组织造成的潜在损害,我们利用啮齿动物模型研究了多种军事相关金属对氧化损伤标志物的影响.测试的金属包括钨,镍,钴,铁,铜,铝,铅,和贫铀。在这里,我们报告了我们对肌酸激酶活性的发现,脂质和蛋白质氧化,总抗氧化能力,手术植入金属颗粒的Sprague-Dawley大鼠腓肠肌匀浆中的谷胱甘肽水平长达12个月。并非所有嵌入的金属都同样影响测量的标记。然而,在肌肉和血清肌酐水平的不同时间观察到金属相关效应,蛋白质氧化,总抗氧化能力,和谷胱甘肽水平。未观察到金属对脂质过氧化的诱导作用。一起来看,这些数据表明,微小的氧化损伤可能发生在嵌入金属周围的肌肉中,并表明需要对那些被金属弹片伤害的人进行医疗监测。
    Injuries suffered in armed conflicts often result in wounds with embedded metal fragments. Standard surgical guidance has been to leave fragments in place except under certain circumstances; meaning that individuals may carry these retained fragments for their lifetime. Because of advancements in weapon design and the use of improvised explosive devices, the list of metals that could be found in a wound is extensive. In most cases the toxicological properties of these metals when embedded in the body are not known. To assess the potential damage embedded metals may cause to surrounding tissue, we utilized a rodent model to investigate the effect of a variety of military-relevant metals on markers of oxidative damage. The metals tested included tungsten, nickel, cobalt, iron, copper, aluminum, lead, and depleted uranium. Herein we report our findings on creatine kinase activity, lipid and protein oxidation, total antioxidant capacity, and glutathione levels in gastrocnemius homogenates from Sprague-Dawley rats surgically implanted with metal pellets for periods up to 12 months. Not all embedded metals affected the measured markers equally. However, metal-associated effects were seen at various times for muscle and serum creatinine levels, protein oxidation, total antioxidant capacity, and glutathione levels. No metal-induced effects on lipid peroxidation were observed. Taken together, these data suggest that subtle oxidative damage may be occurring in the muscle surrounding an embedded metal and indicates the need for medical surveillance of those individuals wounded by metal shrapnel.
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  • 文章类型: Journal Article
    Setariaitalica(通用名称-狐尾,kangni)是印度南部地区和北方邦某些地区主要种植的主要粮食作物之一。除了作物的消费作为碳水化合物丰富的谷物的一般来源,作物的种子由更多的纤维组成。所以,建议在全国糖尿病人群的膳食补充剂中添加。
    在本文中,目的研究谷子种子对糖尿病大鼠的抗糖尿病活性和抗氧化活性。
    谷子的六种基因型(S.italica)分别对Kangni-1,Kangni-4,Kangni-5,Kangni-6,Kangni-7和Kangni-10进行了体外研究。涉及血糖研究的综合代谢小组(CMP),肾和肝功能测试,和抗氧化剂研究(过氧化氢酶试验;谷胱甘肽S-转移酶(GST);超氧化物歧化酶(SOD);谷胱甘肽(GSH);硫辛酸反应物质(TBARS)和谷胱甘肽过氧化物酶(GPx),并在Wistar大鼠中进行体内动物研究。给STZ诱导的糖尿病大鼠饲喂不同剂量的沙丁香种子水提取物,以通过口服SISAE评估其抗高血糖活性。Further,将其与格列本脲作为标准口服降糖药之一进行比较。
    从取得的成果来看,在施用提取物6小时后,血糖水平的显著下降(70%)产生300mgSISAE/kgb.w.。然而,这些剂量的SISAE在正常大鼠中的血糖水平没有变化。与未治疗的糖尿病大鼠相比,用300mgSISAE/kg体重/天治疗3周后,在糖尿病治疗的大鼠中观察到葡萄糖水平的显着下降以及通过降低HbA1c水平的显着血糖控制。在意大利的这五个基因型中,发现血糖指数的差异。Wistar大鼠的血糖水平明显下降,当每只实验大鼠掺入不同基因型的SetariaitalicaL.Beauv的提取物时,每7天间隔使用格列本脲治疗的大鼠。过氧化氢酶的水平,SOD,GST,GPx,在大鼠的肝脏试验中,用S.litica提取物喂养大鼠时,GSH和TBARS显示出变化。在肾功能测试中,结果表明,狐尾提取物与STZ诱导的糖尿病大鼠的肾功能有显著的关系。他们显示血清肌酐水平的变化,血清尿素和血清尿酸。
    从研究中获得的结果表明,S.italica种子的提取物具有降血脂和抗高血糖活性,因此,它们是草药的良好来源之一。
    UNASSIGNED: Setaria italica (common name- foxtail, kangni) is one of the major food crops which is prominently cultivated in southern regions of India and in certain regions of Uttar Pradesh. Besides the crop\'s consumption as a general source of carbohydrate rich cereal, the seeds of the crop are comprised of more fiber. So, it is recommended to add in the dietary supplementation of the diabetic people across the country.
    UNASSIGNED: In this paper, it intends to investigate the antidiabetic activity and antioxidant activity of S. italica (foxtail millet) seeds in diabetic rats.
    UNASSIGNED: The six genotypes of foxtail millets (S. italica) namely Kangni-1, Kangni-4, Kangni-5, Kangni-6, Kangni-7 & Kangni-10 respectively were subjected to in vitro investigations via. comprehensive metabolic panel (CMP) involving blood glucose study, Kidney & Liver function test, and antioxidant study (Catalase test; Glutathione S-transferase (GST); Superoxide Dismutase (SOD); glutathione (GSH); hiobarbituric acid reactive substances (TBARS) & Glutathione peroxidase (GPx) and were performed in vivo animal investigations in Wistar rats. The STZ induced diabetic rats were fed with doses of different S. italica seed aqueous extract to evaluate its anti-hyperglycemic activity by oral administration of SISAE. Further, it was compared with Glibenclamide which acts as one of the standard oral hypoglycemic agents.
    UNASSIGNED: From achieved outcomes, a significant fall of blood glucose level (70%) produced 300 mg SISAE/kg b.w. after 6 h of extract administration. However, no change could be produced by these doses of the SISAE in normal rats\' blood glucose levels. A significant fall in glucose level along with significant glycemic control by lower HbA1c levels was observed in diabetic treated rats after 3 weeks of treatment with 300 mg of SISAE/kg b.w./day when comparing to untreated diabetic rats. Among these five genotypes of S. italica, the differences in the glycemic index were found. a significant fall could be found in blood glucose levels of Wistar rats, when every experimental rat was incorporating with the extract of different genotypes of Setaria italica L. Beauv than the rats treated with Glibenclamide in every 7 days of interval. The level of catalase, SOD, GST, GPx, GSH and TBARS showed variation while the rats were fed with the extract of S. italica in the liver test of rats. In kidney function test, the result shows that there is significant relationship between foxtail extract and kidney function of STZ induced diabetes rats. They show the change in their serum creatinine level, serum urea and serum uric acid.
    UNASSIGNED: The result obtained from the study shows that the extract of S. italica seeds is capable for the hypolipidemic and antihyperglycemic activities, thereby, they serve as one of the good sources for herbal medicinal items.
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  • 文章类型: Journal Article
    未经批准:Trigonellafoenum-graecumL.种子(TFG)在印度美食中用作香料。在印度传统医学中,TFG用于治疗糖尿病,血脂异常,肥胖,关节炎,癌症,消化系统疾病,和绝经后的情况。绝经后疾病的病理生理学涉及低度全身性炎症。本研究的目的是研究石油醚部分TFG提取物(PE-TFG)对炎症标志物的预防作用,和高脂饮食(HFD)喂养的去卵巢大鼠(OVX大鼠)的组织病理学变化。
    未经证实:OVX雌性SpragueDawley大鼠用于研究。卵巢切除术后三周,将大鼠随机分为不同的组,并给予PE-TFG,阿托伐他汀,皂苷元,17β-雌二醇与HFD一起持续12周。假手术大鼠(S.OVX)用标准颗粒饮食喂养。在12周结束时,老鼠被处死,血液样本被用来估计血脂,葡萄糖,肝标志物,TNF-α,还有瘦素.肝脏,肾,和颈总动脉被分离用于测试氧化应激标志物,脂联素的mRNA表达,PPAR-γ,和组织病理学变化。
    UNASSIGNED:给予PE-TFG显着降低(P<0.05)总胆固醇,LDL,肝标志物,瘦素,TNF-α和脂联素和PPAR-γ在HFD喂养OVX大鼠中的表达。Further,微观和宏观肝脂肪变性,炎症,肾小球肥大,肾脏中退化的小管,内膜增加,与S.OVX大鼠相比,PE-TFG给药后的颈总动脉中层厚度和病理变化不明显。
    未经证实:PE-TFG在HFD喂养的OVX-大鼠中保护细胞炎症和代谢变化,因此可以作为预防剂在绝经后疾病中进一步探索。
    UNASSIGNED: Trigonella foenum-graecum L. seeds (TFG) are used as spices in Indian cuisine. In Indian traditional medicine, TFG is used to treat diabetes, dyslipidemia, obesity, arthritis, cancer, digestive disorders, and postmenopausal conditions. Pathophysiology of postmenopausal diseases involves low-grade systemic inflammation. The purpose of this study is to investigate the prophylactic effect of petroleum ether fraction of TFG-extract (PE-TFG) on inflammatory markers, and histopathological changes in ovariectomized rats (OVX-rats) fed with a high-fat diet (HFD).
    UNASSIGNED: OVX female Sprague Dawley rats were used for the study. Three weeks after ovariectomy, rats were randomized in different groups and administered PE-TFG, atorvastatin, diosgenin, 17β-estradiol for 12 weeks along with HFD. The sham-operated rats (S.OVX) were fed with a standard pellet diet. At the end of 12-weeks, rats were sacrificed, and blood samples were used to estimate lipid profile, glucose, hepatic markers, TNF-α, and leptin. Liver, kidney, and common carotid artery were isolated for testing oxidative stress markers, mRNA expression of adiponectin, PPAR-γ, and histopathological changes.
    UNASSIGNED: Administration of PE-TFG significantly decreased (P < 0.05) total cholesterol, LDL, hepatic markers, leptin, TNF-α and improved mRNA expression of adiponectin and PPAR-γ in HFD-fed OVX-rats. Further, micro and macro hepatic steatosis, inflammation, glomerular hypertrophy, degenerated tubules in kidney, increased tunica intima, and media thickness of common carotid artery and the pathological changes were not significant upon PE-TFG administration compared to S.OVX-rats.
    UNASSIGNED: PE-TFG protects cellular inflammation and metabolic alternations in HFD-fed OVX-rats and thus can be explored further in postmenopausal diseases as a prophylactic agent.
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  • 文章类型: Journal Article
    这项工作的目的是研究五种精油(EO)的保护作用;迷迭香,胸腺,牛至紧致Benth。,球桉树。和罗勒;抵抗酿酒酵母中过氧化氢诱导的氧化应激。通过气相色谱(GC)和气相色谱-质谱(GC/MS)分析E0的化学组成。评估了体外抗氧化活性,并研究了EO的保护作用。用不同浓度的EOs(6.25-25μg/ml)预处理酵母细胞1小时,然后用H2O2(2mM)再孵育1小时。细胞活力,抗氧化剂(过氧化氢酶,超氧化物歧化酶和谷胱甘肽还原酶)和代谢(琥珀酸脱氢酶)酶,以及脂质过氧化(LPO)和蛋白质羰基含量(PCO)的水平进行了评估。EO的化学组成在定性和定量上都显示出差异。的确,O.compactum主要含有香芹酚,O.basilicum主要由芳樟醇组成,T.vulgaris富含百里酚,R.officinalis具有较高的α-pine含量,对于E.globulus,桉树脑是主要化合物。罗勒的EO,发现牛至和百里香的总酚类化合物含量最高。此外,它们对酵母细胞抗H2O2诱导的氧化应激表现出最佳的保护作用。此外,以酵母培养基中EOs的剂量依赖性方式,处理过的细胞LPO水平较低,抗氧化和代谢酶活性低于仅暴露于H2O2的细胞。细胞活力也得到改善。似乎所研究的EOs是有效的天然抗氧化剂,可用于防止与氧化应激相关的损害和严重疾病。
    The purpose of this work was to investigate the protective effect of five essential oils (EOs); Rosmarinus officinalis, Thymus vulgaris, Origanum compactum Benth., Eucalyptus globulus Labill. and Ocimum basilicum L.; against oxidative stress induced by hydrogen peroxide in Saccharomyces cerevisiae. The chemical composition of the EOs was analyzed by gas chromatography (GC) and gas chromatography-mass spectrometry (GC/MS). The in vitro antioxidant activity was evaluated and the protective effect of EOs was investigated. Yeast cells were pretreated with different concentrations of EOs (6.25-25 µg/ml) for an hour then incubated with H2O2 (2 mM) for an additional hour. Cell viability, antioxidants (Catalase, Superoxide dismutase and Glutathione reductase) and metabolic (Succinate dehydrogenase) enzymes, as well as the level of lipid peroxidation (LPO) and protein carbonyl content (PCO) were evaluated. The chemical composition of EOs has shown the difference qualitatively and quantitatively. Indeed, O. compactum mainly contained Carvacrol, O. basilicum was mainly composed of Linalool, T. vulgaris was rich in thymol, R. officinalis had high α-Pinene amount and for E. globulus, eucalyptol was the major compound. The EOs of basil, oregano and thyme were found to possess the highest amount of total phenolic compounds. Moreover, they have shown the best protective effect on yeast cells against oxidative stress induced by H2O2. In addition, in a dose dependent manner of EOs in yeast medium, treated cells had lower levels of LPO, lower antioxidant and metabolic enzymes activity than cells exposed to H2O2 only. The cell viability was also improved. It seems that the studied EOs are efficient natural antioxidants, which can be exploited to protect against damages and serious diseases related to oxidative stress.
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  • 文章类型: Journal Article
    本研究调查了二甲双胍治疗对高脂饮食(HFD)喂养大鼠肝脏氧化应激和非酒精性脂肪性肝病(NADLD)相关炎症的影响。
    用HFD或实验室食物饮食喂养Wistar大鼠8周。二甲双胍以200mg/kg的剂量口服给药。体重,每天记录食物和水的摄入量。口服葡萄糖耐量试验(OGTT),对血浆和组织样本进行生化分析和组织学检查.使用逆转录聚合物链反应(RT-PCR)分析抗氧化剂和抗炎mRNA表达。
    二甲双胍治疗8周可防止HFD诱导的体重增加并减少HFD喂养大鼠的脂肪沉积。生化分析表明,二甲双胍治疗显着减弱硝基氧化应激标志物丙二醛(MDA),高级蛋白质氧化产物(APOP),HFD喂养大鼠肝脏中一氧化氮(NO)水平过高。基因表达分析表明,二甲双胍治疗与HFD喂养大鼠肝脏中Nrf-2,HO-1,SOD和过氧化氢酶等抗氧化基因表达增强有关。二甲双胍治疗还发现调节脂肪代谢和抗炎基因的表达,包括PPAR-γ,C/EBP-α,SREBP1c,FAS,AMPK和GLUT-4。与生化和基因表达数据一致,组织病理学检查显示,二甲双胍治疗减轻了炎症细胞浸润,脂肪变性,肝细胞坏死,胶原蛋白沉积,HFD喂养大鼠肝脏纤维化。
    总而言之,这项研究表明,二甲双胍可能通过降低肝脏氧化应激和肝脏炎症来预防和治疗HFD诱导的脂肪变性.
    UNASSIGNED: This current study investigated the effect of metformin treatment on hepatic oxidative stress and inflammation associated with nonalcoholic fatty liver disease (NADLD) in high fat diet (HFD) fed rats.
    UNASSIGNED: Wistar rats were fed with a HFD or laboratory chow diet for 8 weeks. Metformin was administered orally at a dose of 200 mg/kg. Body weight, food and water intake were recorded on daily basis. Oral glucose tolerance test (OGTT), biochemical analysis and histological examinations were conducted on plasma and tissue samples. Antioxidant and anti-inflammatory mRNA expression was analyzed using reverse transcription polymeric chain reaction (RT-PCR).
    UNASSIGNED: Metformin treatment for 8 weeks prevented HFD-induced weight gain and decreased fat deposition in HFD fed rats. Biochemical analysis revealed that metformin treatment significantly attenuated nitro-oxidative stress markers malondialdehyde (MDA), advanced protein oxidation product (APOP), and excessive nitric oxide (NO) levels in the liver of HFD fed rats. Gene expression analysis demonestrated that metformin treatment was associated with an enhanced expression of antioxidant genes such as Nrf-2, HO-1, SOD and catalase in liver of HFD fed rats. Metformin treatment also found to modulate the expression of fat metabolizing and anti-inflammatory genes including PPAR--γ, C/EBP-α, SREBP1c, FAS, AMPK and GLUT-4. Consistent with the biochemical and gene expression data, the histopathological examination unveiled that metformin treatment attenuated inflammatory cells infiltration, steatosis, hepatocyte necrosis, collagen deposition, and fibrosis in the liver of HFD fed rats.
    UNASSIGNED: In conclusion, this study suggests that metformin might be effective in the prevention and treatment of HFD-induced steatosis by reducing hepatic oxidative stress and inflammation in the liver.
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  • 文章类型: Journal Article
    早期的报道表明,环磷酰胺(CYCP),一种抗恶性药物,引起细胞毒性;柚皮苷具有对抗氧化应激和血脂异常的几种有益潜力。我们研究了柚皮苷对自由基清除的影响,细胞完整性,细胞ATP,抗氧化剂,氧化应激,CYCP诱导的红细胞毒性大鼠模型中的脂质分布。在单次CYCP(200mg/kg,i.p.)管理。之后,大鼠被处死。50%清除过氧化氢和一氧化氮自由基所需的柚皮苷浓度分别为0.27mg/mL和0.28mg/mL,分别。柚皮苷预处理通过消除CYCP诱导的红细胞LDH(ATP的标志物)活性降低,显着(p<0.05)保护了红细胞的质膜结构和完整性。柚皮苷预处理显著(p<0.05)逆转CYCP诱导的红细胞谷胱甘肽水平下降,谷胱甘肽-S-转移酶的活性,过氧化氢酶,谷胱甘肽过氧化物酶,和谷胱甘肽还原酶;减少CYCP介导的红细胞丙二醛水平的增加,一氧化氮,和主要脂质(胆固醇,三酰基甘油,磷脂,和非酯化脂肪酸)。一起来看,不同急性预处理剂量的柚皮苷可能通过其抗氧化剂避免CYCP介导的红细胞功能障碍,自由基清除,和抗血脂异常的特性。
    Earlier reports have shown that Cyclophosphamide (CYCP), an anti-malignant drug, elicited cytotoxicity; and that naringin has several beneficial potentials against oxidative stress and dyslipidaemias. We investigated the influence of naringin on free radical scavenging, cellular integrity, cellular ATP, antioxidants, oxidative stress, and lipid profiles in the CYCP-induced erythrocytotoxicity rat model. Rats were pretreated orally by gavage for fourteen consecutive days with three doses (50, 100, and 200 mg/kg) naringin before single CYCP (200 mg/kg, i.p.) administration. Afterwards, the rats were sacrificed. Naringin concentrations required for 50 % scavenging hydrogen peroxide and nitric oxide radical were 0.27 mg/mL and 0.28 mg/mL, respectively. Naringin pretreatment significantly (p < 0.05) protected erythrocytes plasma membrane architecture and integrity by abolishing CYCP-induced decrease in the activity of erythrocyte LDH (a marker of ATP). Pretreatment with naringin remarkably (p < 0.05) reversed CYCP-induced decreases in the erythrocytes glutathione levels, activities of glutathione-S-transferase, catalase, glutathione peroxidase, and glutathione reductase; attenuated CYCP-mediated increases in erythrocytes levels of malondialdehyde, nitric oxide, and major lipids (cholesterol, triacylglycerol, phospholipids, and non-esterified fatty acids). Taken together, different acute pretreatment doses of naringin might avert CYCP-mediated erythrocytes dysfunctions via its antioxidant, free-radical scavenging, and anti-dyslipidaemia properties.
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  • 文章类型: Journal Article
    本研究调查了劳力草的肾脏保护作用。(TL)在通过调节细胞信号传导途径的铅诱导毒性测试中。进行的研究旨在评估TL叶提取物在暴露于乙酸铅(PbAc)的瑞士白化病小鼠中的作用。在体内研究之前,通过活性特异性(PASS)分子对接分析,推测植物叶提取物可能具有肾脏保护作用。在动物模型研究中,白化病小鼠分为七组,用PbAc和TL(100,200mg/kgBW)或维生素E(100mg/kgBW)共治疗38天,而未经处理的对照,TL控制,和载体对照组接受乙酸钠,PbAc,醋酸钠加矿物油,分别。在治疗结束时,收集血液和肾脏组织用于研究Pb浓度,估计生化概况,评估氧化应激和炎症参数。使用H&E染色和TUNEL测定从肾切片评估肾的组织病理学变化以及细胞凋亡。发现铅暴露小鼠血液和肾脏样本中铅的浓度增加,这进一步导致血浆中MDA水平的增加,血,和组织。其次是肾脏损伤,TNF-α的表达增加,iNOS,观察到肾组织中的COX-2,这与铅处理小鼠体循环中TNF-α升高有关。与TL或维生素E共同治疗可显着减少肾脏组织的结构改变和凋亡。炎症标志物尤其是TNF-α的下调,iNOS,和COX-2通过降低血浆BUN和肌酐水平同时改善肾功能,表明TL可作为潜在的膳食补充剂来解毒肾脏中的Pb,具有抗氧化和抗炎作用。
    This research investigated the reno-protective effect of Thunbergia laurifolia Linn. (TL) in a lead-induced toxicity test through the modulation of cell signaling pathways. The study carried out to evaluate the effect of TL leaf extracts in Swiss Albino mice exposed to lead acetate (PbAc). Prior to in vivo study, a probable kidney-protective effect of the plant leaf extract was presumed through an activity-specific (PASS) molecular docking analysis. In animal model study, albino mice were divided in seven groups and co-treated with PbAc and TL (100, 200 mg/kgBW) or vitamin E (100 mg/kgBW) for 38 days, whereas the untreated control, TL control, and vehicle control groups received sodium acetate, PbAc, sodium acetate plus mineral oil, respectively. At the end of treatment, blood and kidney tissue were collected for investigating Pb concentration, estimating biochemical profile, evaluating oxidative stress and inflammatory parameters. The histopathological change of kidney along with apoptosis was assessed from kidney sections using H & E staining and TUNEL assay. Pb-exposed mice were found to be increased concentration of Pb in the blood and kidney sample, which further led to increased MDA levels in the plasma, blood, and tissue. Followed by kidney damage, increased expression of TNF-α, iNOS, and COX-2 in kidney tissues were noticed, which were related to elevated TNF-α in the systemic circulation of Pb-treated mice. Co-treatment with TL or vitamin E significantly reduced altered structure and apoptosis of kidney tissues. Downregulation of inflammatory markers especially TNF-α, iNOS, and COX-2 with simultaneous improvement of renal function through reduced plasma BUN and creatinine levels demonstrate that TL act as a potential dietary supplement to detoxify Pb in kidney showing an antioxidant and anti-inflammatory effect.
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  • 文章类型: Journal Article
    天然抗氧化剂在预防与年龄有关的疾病中的作用是显而易见的。蔬菜产业产生了大量的废弃物,这是抗氧化剂的良好来源。该研究的目的是研究长期食用乙醇黄色洋葱壳提取物对衰老的实验室啮齿动物的抗氧化作用。将20只雄性Wistar白化病大鼠随机分为两组(n=10):对照组和接受乙醇黄色洋葱壳提取物(用蒸馏水稀释2mL/大鼠;活性为4.44µmol-equiv。槲皮素)188天。使用氧自由基吸收能力和铁还原抗氧化能力测定提取物的总抗氧化能力,相当于941.4±32.7µmol当量。Trolox/g原材料和167.4±16.4µmol当量。槲皮素/克原料,分别。口服摄入洋葱皮提取物影响肝脏和大脑的抗氧化系统的指标,但不影响血液和血浆,主要是由于肝脏中过氧化氢酶和超氧化物歧化酶的活性升高了44.4%和79.1%,分别,在大脑中增加了三倍和79.1%,分别。可用性,洋葱废物的廉价和高抗氧化潜力使其成为适用于食品和制药行业的功能性成分和生物活性物质的良好来源。
    The role of natural antioxidants in preventing of age-relating diseases is evident. The vegetable industry generates a large amount of waste, which is a good source of antioxidants. The aim of the study was the investigation of the antioxidant effect of long-term consumption of ethanolic yellow onion husk extract in ageing laboratory rodents. Twenty male Wistar albino rats were divided randomly into two groups (n = 10): a control group and an experimental group that received ethanolic yellow onion husk extract (2 mL/rat diluted with distilled water; activity of 4.44 µmol-equiv. quercetin) for 188 days. Oxygen radical absorbance capacity and ferric reducing antioxidant power assays were used to determine the total antioxidant capacity of the extract, which amounted to 941.4 ± 32.7 µmol equiv. Trolox/g raw material and 167.4 ± 16.4 µmol-equiv. quercetin/g raw material, respectively. Oral intake of the onion husk extract affected the indicators of the antioxidant system of the liver and the brain but not of the blood and plasma, mainly due to elevations in the activity of catalase and superoxide dismutase in the liver by 44.4% and 79.1%, respectively, and in the brain by three-fold and 79.1%, respectively. The availability, cheapness and high antioxidant potential of onion waste qualifies it a good source of functional ingredients and bioactive substances applicable in the food and pharmaceutical industries.
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