antioxidant

抗氧化剂
  • 文章类型: Journal Article
    磷酸三(2-氯乙基)酯(TCEP)和磷酸三(1-氯-2-丙基)酯(TCPP)是工业上常用的氯化有机磷阻燃剂(OPFR)。它们经常在水生环境中一起被检测到,并与各种危险影响有关。然而,在非模型水生生物中,长期暴露于环境相关浓度的这些OPFRs的生态风险仍未被探索。这项研究调查了长期暴露于TCEP和TCPP(长达25天)对变态的影响,肝脏抗氧化剂,多足类动物大头t的内分泌功能。每种物质的暴露浓度设定为3、30和90μg/L,以等浓度组合独立进行,与对照组进行比较。综合生物标志物响应(IBR)方法开发了一个最佳线性模型,用于预测TCEP和TCPP对Polypedates潜在分布区域中t的总体生态风险。结果表明:(1)暴露于环境相关浓度的TCEP和TCPP会对t的变态时间产生各种不利影响,肝脏抗氧化酶活性和相关基因表达,和内分泌相关基因表达,它们的联合暴露加剧了这些影响。(2)各浓度下TCEP的IBR值始终大于TCPP,在它们的组合暴露下观察到加性效应。(3)TCEP和TCPP共同存在的t在中国太湖和越南河内的生态风险最高。总之,长期暴露于环境相关浓度的TCEP和TCPP会对两栖动物t构成潜在的生态风险,为制定控制水生生态系统中TCEP和TCPP污染的政策和战略提供见解。此外,建立IBR预测模型所采用的方法为评估多个OPFR的总体生态风险提供了方法论框架。
    Tris (2-chloroethyl) phosphate (TCEP) and tris (1-chloro-2-propyl) phosphate (TCPP) are common chlorinated organophosphorus flame retardants (OPFRs) used in industry. They have been frequently detected together in aquatic environments and associated with various hazardous effects. However, the ecological risks of prolonged exposure to these OPFRs at environmentally relevant concentrations in non-model aquatic organisms remain unexplored. This study investigated the effects of long-term exposure (up to 25 days) to TCEP and TCPP on metamorphosis, hepatic antioxidants, and endocrine function in Polypedates megacephalus tadpoles. Exposure concentrations were set at 3, 30, and 90 μg/L for each substance, conducted independently and in equal-concentration combinations, with a control group included for comparison. The integrated biomarker response (IBR) method developed an optimal linear model for predicting the overall ecological risks of TCEP and TCPP to tadpoles in potential distribution areas of Polypedates species. Results showed that: (1) Exposure to environmentally relevant concentrations of TCEP and TCPP elicited variable adverse effects on tadpole metamorphosis time, hepatic antioxidant enzyme activity and related gene expression, and endocrine-related gene expression, with their combined exposure exacerbating these effects. (2) The IBR value of TCEP was consistently greater than that of TCPP at each concentration, with an additive effect observed under their combined exposure. (3) The ecological risk of tadpoles exposed to the combined presence of TCEP and TCPP was highest in China\'s Taihu Lake and Vietnam\'s Hanoi than in other distribution locations. In summary, prolonged exposure to environmentally relevant concentrations of TCEP and TCPP presents potential ecological risks to amphibian tadpoles, offering insights for the development of policies and strategies to control TCEP and TCPP pollution in aquatic ecosystems. Furthermore, the methodology employed in establishing the IBR prediction model provides a methodological framework for assessing the overall ecological risks of multiple OPFRs.
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  • 文章类型: Journal Article
    天然植物提取物因其低毒性在研究中获得了极大的关注,和强效的抗氧化剂,和抗老化性能。本研究调查了发酵玫瑰提取物(FRE)的植物化学成分,并评估了它的抗氧化剂,皮肤美白,和体外抗衰老活性。结果表明,FRE富含多酚和黄酮。通过液相色谱-质谱(LC-MS)鉴定出13种主要化合物,以黄芪为主要成分。体外,抗氧化活性分析表明,FRE有效消除1,1-二苯基-2-吡啶酰肼(DPPH)自由基和2,2'-氮杂二(3-乙基苯并噻唑啉-6-磺酸)(ABTS)自由基和剂量依赖性降低细胞内活性氧(ROS)水平。FRE剂量依赖性抑制酪氨酸酶,胶原酶,和透明质酸酶活性,减少细胞内黑色素合成,上调I型胶原α1(COL1A1)和III型胶原α1(COL3A1)的表达,和下调基质金属蛋白酶(MMPs)表达。此外,用FRE处理显著下调丝裂原活化蛋白激酶1(MAPK1)的表达,提示FRE可能通过调节MAPK信号通路来实现皮肤抗衰老。
    Natural plant extracts have gained significant attention in research due to their low toxicity, and potent antioxidant, and anti-aging properties. The present study investigated the phytochemical composition of a fermented rose extract (FRE), and evaluated its antioxidant, skin whitening, and anti-aging activities in vitro. The results showed that the FRE was rich in polyphenols and flavonoids. A total of 13 major compounds were identified by Liquid Chromatography-Mass Spectrometry (LC-MS), with astragalin as the primary component. In vitro, analysis of antioxidant activity showed that FRE effectively eliminated 1,1-diphenyl-2-picrylhydrazyl (DPPH) radicals and 2,2\'-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) radicals and dose-dependent reduced intracellular reactive oxygen species (ROS) levels. The FRE dose-dependent inhibited tyrosinase, collagenase, and hyaluronidase activity, reduced intracellular melanin synthesis, up-regulated the expression of collagen type I alpha 1 (COL1A1) and collagen type III alpha 1 (COL3A1), and down-regulated matrix metalloproteinases (MMPs) expression. Additionally, treatment with FRE significantly downregulated the expression of mitogen-activated protein kinase 1 (MAPK1), suggesting that FRE may modulate MAPK signaling pathways for skin anti-aging.
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  • 文章类型: Journal Article
    DNA纳米结构长期以来一直被开发用于生物医学目的,但是它们在体内的受控递送对疾病疗法提出了重大挑战。我们以前报道过,几十和几百纳米尺度的DNA纳米结构显示出优先的肾脏排泄或肾脏滞留,允许对肾功能进行灵敏的评估和有效的保护,对单侧输尿管梗阻或急性肾损伤等事件的反应。受到积极成果的鼓舞,我们把注意力转向肝脏,特别针对明显缺乏DNA材料的器官,探索DNA纳米结构与肝脏之间的相互作用。通过PET成像,我们将SDF和M13鉴定为DNA纳米结构,在众多候选物中表现为在肝脏中显著积累.最初,我们调查并评估了它们的生物分布,毒性,和健康小鼠的免疫原性,建立正常小鼠DNA纳米结构的结构-功能关系。随后,我们采用肝脏缺血再灌注损伤(IRI)小鼠模型来验证SDF和M13在更具挑战性的病理条件下的纳米生物相互作用.M13不仅加剧了肝脏氧化损伤,而且还升高了局部细胞凋亡水平。相比之下,SDF表现出明显的清除肝脏氧化反应的能力,从而减轻肝细胞损伤。这些令人信服的结果强调了SDF作为肝脏相关病症的有希望的治疗剂的潜力。本文旨在阐明它们在肝损伤中的作用和机制,为DNA纳米结构的生物医学应用提供了新的视角。
    DNA nanostructures have long been developed for biomedical purposes, but their controlled delivery in vivo proposes a major challenge for disease theranostics. We previously reported that DNA nanostructures on the scales of tens and hundreds nanometers showed preferential renal excretion or kidney retention, allowing for sensitive evaluation and effective protection of kidney function, in response to events such as unilateral ureter obstruction or acute kidney injury. Encouraged by the positive results, we redirected our focus to the liver, specifically targeting organs noticeably lacking DNA materials, to explore the interaction between DNA nanostructures and the liver. Through PET imaging, we identified SDF and M13 as DNA nanostructures exhibiting significant accumulation in the liver among numerous candidates. Initially, we investigated and assessed their biodistribution, toxicity, and immunogenicity in healthy mice, establishing the structure-function relationship of DNA nanostructures in the normal murine. Subsequently, we employed a mouse model of liver ischemia-reperfusion injury (IRI) to validate the nano-bio interactions of SDF and M13 under more challenging pathological conditions. M13 not only exacerbated hepatic oxidative injury but also elevated local apoptosis levels. In contrast, SDF demonstrated remarkable ability to scavenge oxidative responses in the liver, thereby mitigating hepatocyte injury. These compelling results underscore the potential of SDF as a promising therapeutic agent for liver-related conditions. This aimed to elucidate their roles and mechanisms in liver injury, providing a new perspective for the biomedical applications of DNA nanostructures.
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  • 文章类型: Journal Article
    五个新的糖苷,即3-甲氧基苯甲酸甲酯-4,5-二-O-β-D-吡喃葡萄糖苷(1),(1aS,3aS,3R)-3-(4'-O-β-D-吡喃葡萄糖基-3'-甲氧基苯基)-5,6-二氧杂双环[3.3.0]辛烷-1-酮(2),喹啉-4(1H)-酮-3-O-β-D-吡喃葡萄糖苷(3),3-甲氧基-苯丙酮4-O-(6'-β-D-吡喃木糖基)-β-D-吡喃葡萄糖苷(4),3-甲氧基苯甲酸甲酯4-O-(6'-β-D-吡喃木糖基)-β-D-吡喃葡萄糖苷(5),和一种已知的化合物,bambuliganB(6)是从黑毛竹的茎中分离出来的。Henonis.使用光谱分析确定它们的结构。评价所有化合物的DPPH自由基清除活性。化合物6表现出抗氧化活性,IC50值为59.5μM(阳性对照,L-抗坏血酸,IC50=12.4μM;2,6-二叔丁基-4-甲基苯酚,IC50=11.8μM)。
    Five new glycosides, namely methyl 3-methoxybenzoate-4,5-di-O-β-D-glucopyranoside (1), (1aS,3aS,3R)-3-(4\'-O-β-D-glucopyranosyl-3\'-methoxyphenyl)-5,6-dioxa-bicyclo[3.3.0]octane-1-one (2), quinolin-4(1H)-one-3-O-β-D-glucopyranoside (3), 3-methoxy-propiophenone 4-O-(6\'-β-D-xylopyranosyl)-β-D-glucopyranoside (4), methyl 3-methoxybenzoate 4-O-(6\'-β-D-xylopyranosyl)-β-D-glucopyranoside (5), and one known compound, bambulignan B (6) were isolated from the culms of Phyllostachys nigra var. henonis. Their structures were determined using spectroscopic analysis. All compounds were evaluated for their DPPH radical scavenging activity. Compound 6 exhibited antioxidant activity with IC50 value of 59.5 μM (positive control, L-ascorbic acid, IC50 = 12.4 μM; 2,6-ditertbutyl-4-methyl phenol, IC50 = 11.8 μM).
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  • 文章类型: Journal Article
    氧化应激与听力损失和耳鸣的发生有关。氧化平衡评分(OBS),一种综合指标,评估各种饮食和生活方式因素中抗氧化剂和促氧化成分之间的平衡,表示整体氧化平衡状态。然而,OBS与听力损失和耳鸣的关联以前没有报道.
    分析了1999-2018年国家健康与营养检查调查(NHANES)的横截面数据。加权多变量逻辑回归,加权多元线性回归,采用约束三次样条曲线(RCS)回归方法探讨OBS与言语听力损失的关系,低,和高频率,还有耳鸣.亚组分析和敏感性分析用于确定亚组之间的一致性和结果的稳定性。
    我们纳入了13,715和21,644个人,以调查OBS与听力损失之间的关联。以及OBS和耳鸣之间,分别。第二个,第三,第四四分位数的OBS与较低的听力损失风险显着相关,低,和高频率,除了耳鸣,与最低四分位数相比。RCS回归分析表明OBS与听力损失和耳鸣呈负线性相关。在亚组分析和敏感性分析中保持了大多数关联。此外,饮食和生活方式OBS独立地有助于防止听力损失和耳鸣。
    OBS与听力损失和耳鸣的风险呈负相关。研究结果表明,抗氧化剂饮食和生活方式相结合有望成为降低听力损失和耳鸣患病率的潜在策略。
    UNASSIGNED: Oxidative stress is associated with the occurrence of hearing loss and tinnitus. The oxidative balance score (OBS), a composite indicator evaluating the balance between antioxidant and pro-oxidative components across various dietary and lifestyle factors, indicates the overall oxidative balance status. However, the association of OBS with hearing loss and tinnitus has not been reported previously.
    UNASSIGNED: Cross-sectional data from the National Health and Nutrition Examination Survey (NHANES) 1999-2018 were analyzed. Weighted multivariable logistic regression, weighted multivariable linear regression, and restricted cubic spline curve (RCS) regression were employed to explore the relationship between OBS and hearing loss at speech, low, and high frequencies, along with tinnitus. Subgroup analysis and sensitivity analysis were used to ascertain the consistency across subgroups and stability of the results.
    UNASSIGNED: We included 13,715 and 21,644 individuals to investigate the association between OBS and hearing loss, as well as between OBS and tinnitus, respectively. The second, third, and fourth quartiles of OBS were significantly associated with a lower risk of hearing loss at speech, low, and high frequencies, as well as tinnitus, compared to the lowest quartile. The RCS regression analysis indicated a negative linear association of OBS with hearing loss and tinnitus. Most associations were maintained in subgroup analysis and sensitivity analysis. Additionally, the dietary and lifestyle OBS independently contribute to the protection against hearing loss and tinnitus.
    UNASSIGNED: OBS is negatively correlated with the risk of hearing loss and tinnitus. The findings suggest that combined antioxidant diet and lifestyle hold promise as potential strategies for reducing the prevalence of hearing loss and tinnitus.
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  • 文章类型: Journal Article
    在先前的研究中,富含抗氧化剂的饮食已被证明可以预防偏头痛。然而,关于偏头痛和维生素C(一种必需的膳食抗氧化剂)之间的关联几乎没有发现。这项研究评估了美国成年偏头痛患者的饮食维生素C摄入量,以确定成人偏头痛发病率与维生素C摄入量之间是否存在相关性。
    这项横断面研究涵盖了1999年至2004年参加国家健康和营养调查(NHANES)的成年人,提供了有关他们饮食中维生素C摄入量以及严重头痛或偏头痛史的详细信息。该研究使用加权多变量和逻辑回归分析来发现维生素C消耗与严重头痛或偏头痛之间的独立联系。进行了交互作用测试和亚组分析。
    在样本中的13445个人中,20.42%有严重头痛或偏头痛。在完全调整的模型中,膳食维生素C摄入与重度头痛或偏头痛呈显著负相关(比值比[OR]=0.94,95%置信区间[CI]=0.91~0.98,p=0.0007).与四分位数1相比,四分位数4患严重头痛或偏头痛的几率降低了22%(OR=0.78,95%CI=0.69-0.89,p=0.0002)。亚组分析显示,维生素C摄入量与严重头痛或偏头痛之间存在显着差异(相互作用p<0.01)。
    严重头痛或偏头痛的风险降低可能与维生素C的消耗增加有关。
    UNASSIGNED: An antioxidant-rich diet has been shown to protect against migraines in previous research. However, little has been discovered regarding the association between migraines and vitamin C (an essential dietary antioxidant). This study assessed the dietary vitamin C intake among adult migraineurs in the United States to determine if there is a correlation between migraine incidence and vitamin C consumption in adults.
    UNASSIGNED: This cross-sectional research encompassed adults who participated in the National Health and Nutrition Examination Survey (NHANES) from 1999 to 2004, providing detailed information on their dietary vitamin C intake as well as their history of severe headaches or migraines. The study used weighted multivariable and logistic regression analyses to find an independent connection between vitamin C consumption and severe headache or migraine. Tests of interactions and subgroup analysis were conducted.
    UNASSIGNED: Among the 13,445 individuals in the sample, 20.42% had a severe headache or migraine. In fully adjusted models, dietary vitamin C consumption was substantially linked negatively with severe headache or migraine (odds ratio [OR] = 0.94, 95% confidence interval [CI] = 0.91-0.98, p = 0.0007). Compared to quartile 1, quartile 4 had 22% fewer odds of having a severe headache or migraine (OR = 0.78, 95% CI = 0.69-0.89, p = 0.0002). Subgroup analyses showed a significant difference between vitamin C intake and severe headaches or migraines by gender (p for interaction < 0.01).
    UNASSIGNED: Reduced risk of severe headaches or migraines may be associated with increased consumption of vitamin C.
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  • 文章类型: Journal Article
    蛋白质乳液的物理和氧化稳定性差限制了它们在功能性食品中的使用。大豆分离蛋白(SPI)乳液的物理稳定性通过添加苹果多酚(YAP)在本研究中提高,但当YAP为0.12%时下降。YAP绑定预折叠SPI的结构,这促进了接口的有效SPI堆叠。YAP还以剂量依赖性方式提高了SPI乳液的抗氧化性。SPI-YAP相互作用促进了更多的YAP在界面的吸附(>80%),这将乳液的抗氧化能力提高了两倍。此外,超过90%的不饱和脂肪酸被保存,随着YAP的增加,脂质-SPI-β-胡萝卜素的氧化似乎减少。此外,SPI-YAP乳液在乳液储存和体外消化过程中可有效包封和保护β-胡萝卜素,导致β-胡萝卜素的延迟和最大释放。这项研究提高了对多酚通过界面强化抑制脂质-蛋白质氧化的理解,并拓宽了YAP和SPI在功能食品中的潜在应用。
    Protein emulsions\' poor physical and oxidative stabilities restrict their use in functional foods. Soy protein isolate (SPI) emulsions\' physical stability was enhanced by adding young apple polyphenols (YAP) in this study, but decreased when YAP was 0.12 %. YAP binding prefolded SPI\'s structure, which promotes efficient SPI stacking at the interface. YAP also improved SPI emulsions\' oxidation resistance in a dose-dependent manner. SPI-YAP interaction promoted more YAP adsorption (>80 %) at the interface, which increased emulsions\' antioxidant capacities twofold. Furthermore, over 90 % of unsaturated fatty acids were preserved, and the oxidation of lipid-SPI-β-carotene appeared to be reduced as YAP increased. In addition, SPI-YAP emulsions were effective in encapsulating and safeguarding β-carotene during emulsion storage and in vitro digestion, leading to a delayed and maximum release of β-carotene. This study improves the understanding of polyphenols inhibition on lipid-protein oxidation through interface strengthening and broadens the potential applications of YAP and SPI in functional foods.
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  • 文章类型: Journal Article
    月桂酸(LA),含12个碳原子的饱和脂肪酸,被广泛认为是一种健康的脂肪酸,在抗病和提高免疫生理功能方面发挥着重要作用。本研究的目的是确定日粮月桂酸对生长性能的影响。抗氧化能力,非特异性免疫和肠道微生物学,并评估月桂酸在游泳蟹(Portunustrituberculatus)培养中的环保添加剂的潜力。总共192只初始体重为11.68±0.02g的游泳蟹饲喂6种不同的日粮月桂酸水平,月桂酸的分析值为0.09、0.44、0.80、1.00、1.53、2.91mg/g,分别。每个处理有四个重复,每个重复有8只幼蟹。结果表明,最终重量,体重增加百分比,比增长率,存活率和采食量不受日粮月桂酸水平的显著影响;然而,饲喂0.80和1.00mg/g月桂酸的螃蟹在所有处理中的饲料效率最低。肝胰腺和肌肉中的近似组成不受饮食月桂酸水平的显着影响。饲喂0.80mg/g月桂酸的螃蟹在肝胰腺和肠道中的淀粉酶和脂肪酶活性最高(P<0.05)。饲粮月桂酸水平从0.09mg/g增加到2.91mg/g,肝胰腺和肠道肉碱棕榈酰转移酶(CPT)活性显着降低(P<0.05)。在所有处理中,饲喂0.80和1.00mg/g月桂酸的螃蟹的日粮中观察到最低的葡萄糖和总蛋白浓度以及血淋巴中碱性磷酸酶的活性。饲粮月桂酸从0.09mg/g增加到1.53mg/g,肝胰腺中GSH-Px的活性显着增加。饲粮月桂酸水平对肝胰腺和血淋巴中的MDA没有显着影响。在饲喂1.00mg/g月桂酸的螃蟹中,肝胰腺中cat和gpx的表达最高,然而,与炎症信号通路相关的基因的表达(relive,myd88,traf6,nf-κB)在肝胰腺中上调,膳食月桂酸水平从0.09增加到1.00mg/g,此外,肠道炎症相关基因的表达,饲粮月桂酸水平显著影响机体免疫和抗氧化能力(P<0.05)。饲喂不添加月桂酸的蟹肝胰腺脂质下降面积高于其他饲粮(P<0.05)。与脂质分解代谢相关的基因表达上调,然而,饲喂0.80mg/g月桂酸的螃蟹肝胰腺中与脂质合成相关的基因表达下调。月桂酸改善肝管完整性,通过增加围食膜(PM)厚度和上调结构因子(per44,zo-1)和肠道免疫相关基因的表达来增强肠道屏障功能。此外,日粮1.00mg/g月桂酸显著改善肠道菌群组成,增加了放线菌和红杆菌科的丰度,减少了弧菌的丰度,从而维持肠道微生物群的平衡。相关分析表明,肠道菌群与免疫-抗氧化功能存在一定的相关性。总之,日粮中月桂酸1.00mg/g有利于提高梭子蟹的抗氧化能力和肠道健康。
    Lauric acid (LA), a saturated fatty acid with 12 carbon atoms, is widely regarded as a healthy fatty acid that plays an important role in disease resistance and improving immune physiological function. The objective of this study was to determine the effects of dietary lauric acid on the growth performance, antioxidant capacity, non-specific immunity and intestinal microbiology, and evaluate the potential of lauric acids an environmentally friendly additive in swimming crab (Portunus trituberculatus) culture. A total of 192 swimming crabs with an initial body weight of 11.68 ± 0.02 g were fed six different dietary lauric acid levels, the analytical values of lauric acid were 0.09, 0.44, 0.80, 1.00, 1.53, 2.91 mg/g, respectively. There were four replicates per treatment and 8 juvenile swimming crabs per replicate. The results indicated that final weight, percent weight gain, specific growth rate, survival and feed intake were not significantly affected by dietary lauric acid levels; however, crabs fed diets with 0.80 and 1.00 mg/g lauric acid showed the lowest feed efficiency among all treatments. Proximate composition in hepatopancreas and muscle were not significantly affected by dietary lauric acid levels. The highest activities of amylase and lipase in hepatopancreas and intestine were found at crabs fed diet with 0.80 mg/g lauric acid (P<0.05), the activity of carnitine palmityl transferase (CPT) in hepatopancreas and intestine significantly decreased with dietary lauric acid levels increasing from 0.09 to 2.91 mg/g (P<0.05). The lowest concentration of glucose and total protein and the activity of alkaline phosphatase in hemolymph were observed at crabs fed diets with 0.80 and 1.00 mg/g lauric acid among all treatments. The activity of GSH-Px in hepatopancreas significantly increased with dietary lauric acid increasing from 0.09 to 1.53 mg/g, MDA in hepatopancreas and hemolymph was not significantly influenced by dietary lauric acid levels. The highest expression of cat and gpx in hepatopancreas were exhibited in crabs fed diet with 1.00 mg/g lauric acid, however, the expression of genes related to the inflammatory signaling pathway (relish, myd88, traf6, nf-κB ) were up-regulated in the hepatopancreas with dietary lauric acid levels increasing from 0.09 to 1.00 mg/g, moreover, the expression of genes related to intestinal inflammatory, immune and antioxidant were significantly affected by dietary lauric acid levels (P<0.05). Crabs fed diet without lauric acid supplementation exhibited higher lipid drop area in hepatopancreas than those fed the other diets (P<0.05). The expression of genes related to lipid catabolism was up-regulated, however, and the expression of genes related to lipid synthesis was down-regulated in the hepatopancreas of crabs fed with 0.80 mg/g lauric acid. Lauric acid improved hepatic tubular integrity, and enhanced intestinal barrier function by increasing peritrophic membrane (PM) thickness and upregulating the expression of structural factors (per44, zo-1) and intestinal immunity-related genes. In addition, dietary 1.00 mg/g lauric acid significantly improved the microbiota composition of the intestinal, increased the abundance of Actinobacteria and Rhodobacteraceae, and decreased the abundance of Vibrio, thus maintaining the microbiota balance of the intestine. The correlation analysis showed that there was a relationship between intestinal microbiota and immune-antioxidant function. In conclusion, the dietary 1.00 mg/g lauric acid is beneficial to improve the antioxidant capacity and intestinal health of swimming crab.
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  • 文章类型: Journal Article
    纳米粒子(NPs)在调节植物对盐胁迫的耐受性方面很重要。薄荷是应用最广泛的芳香植物之一,对盐胁迫有很高的敏感性。本研究调查了生理和生化因素,以更好地了解肉桂酸(CA)和肉桂酸纳米复合材料在薄荷植物盐度控制中的行为。第一个因素是不同盐浓度的盐胁迫,包括0、50、100和150mg/L,第二个因素是50μMCA,第三个因素是基于羧甲基纤维素的50μMCA纳米复合材料(CMC-CANC)。结果表明,胁迫标记随着盐度水平的增加而增加。相反,用盐度处理的植物显示生理和光合参数下降,而CA和CMCCANC的应用增加了这些关键参数。在盐度下,与对照相比,丙二醛和过氧化氢含量分别下降11.3%和70.4%,分别。此外,CA和CMC-CANC通过增加脯氨酸等相容性溶质含量来增强薄荷对盐度的耐受性,游离氨基酸,蛋白质含量,和可溶性碳水化合物,增加抗氧化酶,和减少植物组织中的胁迫标记。与对照相比,叶绿素荧光和脯氨酸含量分别增加了1.1%和172.1%,分别。盐度胁迫对所有生理和生化参数产生负面影响,但CA和CMC-CANC治疗改善了它们。我们得出结论,纳米复合材料,一种生物兴奋剂,在盐度条件下显着增强薄荷耐受性。
    Nanoparticles (NPs) are important in regulating plant tolerance to salt stress. Peppermint is one of the most widely used aromatic plants, with a high sensitivity to salt stress. The present study investigated physiological and biochemical factors to understand better the behavior of cinnamic acid (CA) and cinnamic acid nanocomposite in salinity control in peppermint plants. The first factor was salt stress with different salt concentrations, including 0, 50, 100, and 150 mg/L, the second factor was 50 μM CA, and the third factor was 50 μM CA nanocomposite based on carboxymethyl cellulose (CMC-CA NC). Results showed that stress markers increased with increasing salinity levels. On the contrary, plants treated with salinity showed a decrease in physiological and photosynthetic parameters, while the application of CA and CMC CA NC increased these critical parameters. Under salinity, compared to the control, malondialdehyde and hydrogen peroxide contents decreased by 11.3% and 70.4%, respectively. Furthermore, CA and CMC-CA NC enhanced peppermint tolerance to salinity by increasing compatible solute content such as proline, free amino acids, protein content, and soluble carbohydrates, increasing antioxidant enzymes, and decreasing stress markers in plant tissues. Compared to the control, chlorophyll fluorescence and proline content increased by 1.1% and 172.1%, respectively. Salinity stress negatively affected all physiological and biochemical parameters, but CA and CMC-CA NC treatments improved them. We concluded that the nanocomposite, a biostimulant, significantly enhances mint tolerance under salinity conditions.
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  • 文章类型: Journal Article
    农业生产严重依赖农药的使用,它们可能会积聚在土壤和水中,对全球生态环境和生物健康构成重大威胁。丁草胺是一种常用的除草剂和环境污染物,这与肝脏和肾脏损伤有关,以及神经系统异常。然而,丁草胺暴露对肠道微生物群的潜在影响仍未得到充分研究。因此,我们的目的是研究丁草胺暴露对宿主健康和肠道微生物群的潜在负面影响。我们的结果表明,丁草胺暴露显著降低了宿主的抗氧化能力,T-AOC水平下降证明,SOD,和GSH-Px,和MDA水平增加。血清生化分析还显示,丁草胺暴露期间AST和ALT水平显着增加。微生物分析表明丁草胺暴露显著降低了肠道菌群的丰度和多样性。此外,丁草胺暴露也显着改变了肠道微生物组成。总之,我们的研究结果表明,接触丁草胺会对健康产生有害影响,包括抗氧化酶的失调,转氨酶异常,和肝肠损伤.此外,它通过改变微生物组成和减少多样性和丰度来破坏肠道微生物稳态。在农药使用日益严重的背景下,这项研究将有助于为规范农药的使用和减少环境污染提供动力。
    Agricultural production relies heavily on the use of pesticides, which may accumulate in soil and water, posing a significant threat to the global ecological environment and biological health. Butachlor is a commonly used herbicide and environmental pollutant, which has been linked to liver and kidney damage, as well as neurological abnormalities. However, the potential impact of butachlor exposure on the gut microbiota remains understudied. Thus, our aim was to investigate the potential negative effects of butachlor exposure on host health and gut microbiota. Our results demonstrated that butachlor exposure significantly reduced the host antioxidant capacity, as evidenced by decreased levels of T-AOC, SOD, and GSH-Px, and increased levels of MDA. Serum biochemical analysis also revealed a significant increase in AST and ALT levels during butachlor exposure. Microbial analysis showed that butachlor exposure significantly reduced the abundance and diversity of gut microbiota. Furthermore, butachlor exposure also significantly altered the gut microbial composition. In conclusion, our findings indicate that butachlor exposure can have detrimental health effects, including dysregulation of antioxidant enzymes, abnormalities in transaminases, and hepatointestinal damage. Furthermore, it disrupts the gut microbial homeostasis by altering microbial composition and reducing diversity and abundance. In the context of the increasingly serious use of pesticides, this study will help provide impetus for standardizing the application of pesticides and reducing environmental pollution.
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