Zinc

  • 文章类型: Journal Article
    全球气温上升和严重的能源短缺促使人们对诸如Zn-CO2电池之类的储能领域内的CO2固定和转化进行研究。然而,传统的Zn-CO2电池采用双室电解池,阴极电解液和阳极电解液具有单独的载体,从“摇椅”电池机构发散。这些常规电池的比能量受到放电反应物/产物在电解质中的溶解度的限制。此外,H2O分子倾向于在电解质/电极界面引发寄生反应,破坏了锌阳极的长期稳定性。在这份报告中,我们介绍了一种创新的“摇椅”型Zn-CO2电池,该电池采用与阴极和阳极兼容的弱酸性Zn(OTf)2水性电解质。这种设计最大限度地减少了Zn表面的副反应,并利用了阴极材料的高催化活性,允许电池实现6734mAhg-1的大量放电容量,并在65个循环内保持性能。此外,袋装电池的成功生产证明了Zn-CO2电池的实际适用性。电极表征证实了优异的电化学可逆性,由ZnCO3和C的固体放电产物促进。这项工作推进了具有增强比能量和可逆途径的“摇椅”Zn-CO2电池,为开发高性能金属CO2电池奠定了基础。
    Rising global temperatures and critical energy shortages have spurred researches into CO2 fixation and conversion within the realm of energy storage such as Zn-CO2 batteries. However, traditional Zn-CO2 batteries employ double-compartment electrolytic cells with separate carriers for catholytes and anolytes, diverging from the \"rocking chair\" battery mechanism. The specific energy of these conventional batteries is constrained by the solubility of discharge reactants/products in the electrolyte. Additionally, H2O molecules tend to trigger parasitic reactions at the electrolyte/electrode interfaces, undermining the long-term stability of Zn anodes. In this report, we introduce an innovative \"rocking chair\" type Zn-CO2 battery that utilizes a weak-acidic Zn(OTf)2 aqueous electrolyte compatible with both cathode and anode. This design minimizes side reactions on the Zn surface and leverages the high catalytic activity of the cathode material, allowing the battery to achieve a substantial discharge capacity of 6734 mAh g-1 and maintain performance over 65 cycles. Moreover, the successful production of pouch cells demonstrates the practical applicability of Zn-CO2 batteries. Electrode characterizations confirm superior electrochemical reversibility, facilitated by solid discharge products of ZnCO3 and C. This work advances a \"rocking chair\" Zn-CO2 battery with enhanced specific energy and a reversible pathway, providing a foundation for developing high-performance metal-CO2 batteries.
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  • 文章类型: Journal Article
    鲍曼不动杆菌是一种革兰氏阴性菌,以其多药耐药性和与ESKAPE病原体下的医院感染的联系而闻名。这种机会性病原体与医院感染普遍相关,在医疗保健环境中构成重大威胁。其严重的临床症状,即,脑膜炎,尿路感染,血流感染,呼吸机相关性肺炎,还有肺炎,催化对创新治疗干预措施的迫切需求。拟议的研究重点是描绘锌的作用,细菌代谢和毒力的关键金属结合蛋白和微量营养素,提高对鲍曼不动杆菌致病性的认识。使用RNA测序和随后的DESeq2分析方法来鉴定受锌暴露影响的差异基因表达。利用STRING数据库进行功能富集分析已经证明了锌引起的致病性增强的复杂分子机制。此外,像gltB这样的枢纽基因,rid,AIL77834.1,sdhB,nuoI,acsA_1,acoC,acca,accD是使用Cytoscape中的cytohubba工具预测的。这项研究强调了锌在鲍曼不动杆菌毒力中的关键作用,阐明了导致其致病性的潜在分子途径。该研究进一步强调了对创新治疗策略的需求,以对抗鲍曼不动杆菌感染,特别是那些由多重耐药菌株诱导的。
    Acinetobacter baumannii is a gram-negative bacterium well known for its multidrug resistance and connection to nosocomial infections under ESKAPE pathogens. This opportunistic pathogen is ubiquitously associated with nosocomial infections, posing significant threats within healthcare environments. Its critical clinical symptoms, namely, meningitis, urinary tract infections, bloodstream infections, ventilator-associated pneumonia, and pneumonia, catalyze the imperative demand for innovative therapeutic interventions. The proposed research focuses on delineating the role of Zinc, a crucial metallo-binding protein and micronutrient integral to bacterial metabolism and virulence, to enhance understanding of the pathogenicity of A. baumannii. RNA sequencing and subsequent DESeq2 analytical methods were used to identify differential gene expressions influenced by zinc exposure. Exploiting the STRING database for functional enrichment analysis has demonstrated the complex molecular mechanisms underlying the enhancement of pathogenicity prompted by Zinc. Moreover, hub genes like gltB, ribD, AIL77834.1, sdhB, nuoI, acsA_1, acoC, accA, accD were predicted using the cytohubba tool in Cytoscape. This investigation underscores the pivotal role of Zinc in the virulence of A. baumannii elucidates the underlying molecular pathways responsible for its pathogenicity. The research further accentuates the need for innovative therapeutic strategies to combat A. baumannii infections, particularly those induced by multidrug-resistant strains.
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  • 文章类型: Journal Article
    一种新的环保传感器,合成了3-((6-((4-氯苄基)氨基)吡啶-2-基)亚氨基)吲哚啉-2-酮(CBAPI),并对其进行了表征。CBAPI传感器用于检测Zn2+和Fe3+离子。在pH6.0时,Zn2离子的检出限为2.90,Fe3离子的检出限为3.59nmolL-1。该传感器表现出对其他干扰阳离子的高选择性。此外,高的结合常数反映了传感器对Zn2和Fe3离子的亲和力。为了进一步验证其对Zn2+离子的定量能力,合成的CBAPI传感器用于测定人头发样品中的锌含量,并使用原子吸收光谱法(AAS)证实了结果。使用AGREE度量工具来评估该方法的环境影响和实际适用性。这些积极的结果表明,检测Zn2和Fe3离子的新方法对环境友好且对人类安全。开发的CBAPI传感器代表了金属离子检测的潜在发展,结合灵敏度,选择性,和速度。
    A new eco-friendly sensor, 3-((6-((4-chlorobenzylidene)amino)pyridin-2-yl)imino)indolin-2-one (CBAPI) was synthesized and well characterized. The CBAPI sensor was employed for detecting Zn2+ and Fe3+ ions. It exhibited a low limit of detection at pH 6.0, with values of 2.90, for Zn2+ and 3.59 nmol L-1 for Fe3+ ions. The sensor demonstrated high selectivity over other interfering cations. Additionally, the high binding constants reflect the great affinity of sensor towards Zn2+ and Fe3+ ions. To further validate its quantification ability for Zn2+ ions, the synthesized CBAPI sensor was used to determine Zn levels in human hair samples, and the results were confirmed using atomic absorption spectroscopy (AAS). The AGREE metric tool was used to assess the method\'s environmental impact and practical applicability. These positive outcomes indicated that the new method for detecting Zn2+ and Fe3+ ions is environmentally friendly and safe for humans. The developed CBAPI sensor represents a potential development in metal ion detection, combining sensitivity, selectivity, and rapidity.
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  • 文章类型: Journal Article
    锌(Zn),一种必需的微量元素,对几种癌症的预后有不利影响。然而,在目前的新辅助治疗时代,术前血清锌水平与晚期食管癌患者预后之间的关系尚不清楚.
    这项研究涉及2017年8月至2021年2月在新辅助化疗后接受R0手术的185例食管癌患者。我们回顾性调查了术前血清锌水平与患者预后之间的关系。
    根据术前平均血清锌水平将患者分为低锌组(<64μg/dL)和高锌组(≤64μg/dL)。低锌的总生存率(OS)明显较差(2年OS率:76.2%vs.83.3%在低位与高锌;p=0.044)。病理性无反应者的低锌(≤1a级)与较短的2年无复发生存率(RFS)显着相关(39.6%vs.64.1%在低位与高锌;p=0.032)。多变量分析确定术前营养状况指标中的低BMI和锌水平是无应答者RFS恶化的独立危险因素。与响应者相比,病理性无反应者包括明显更多的男性,表现状态≥1,根据病理反应,锌水平没有差异。
    术前低锌水平对接受新辅助化疗的食管癌患者的早期复发有负面影响。这表明需要对术前锌缺乏的食管癌患者进行锌补充。
    UNASSIGNED: Zinc (Zn), an essential trace element, has an adverse influence on the prognosis of several cancers. However, the association between the preoperative serum Zn level and outcomes in patients with advanced esophageal cancer in the current neoadjuvant treatment era remains unclear.
    UNASSIGNED: This study involved 185 patients with esophageal cancer who underwent R0 surgery after neoadjuvant chemotherapy from August 2017 to February 2021. We retrospectively investigated the relationship between the preoperative serum Zn level and the patients\' outcomes.
    UNASSIGNED: The patients were divided into a low Zn group (<64 μg/dL) and a high Zn group (≤64 μg/dL) according to the mean preoperative serum Zn level. Low Zn had significantly worse overall survival (OS) (2-year OS rate: 76.2% vs. 83.3% in low vs. high Zn; p = 0.044). A low Zn in pathological non-responders (Grade ≤ 1a) was significantly associated with a shorter 2-year recurrence-free survival (RFS) rate (39.6% vs. 64.1% in low vs. high Zn; p = 0.032). The multivariate analysis identified low BMI and Zn level among preoperative nutritional status indices as an independent risk factor for worse RFS in non-responders. Compared with responders, pathological non-responders comprised significantly more males and a performance status of ≥1, and there was no difference in Zn level according to pathological response.
    UNASSIGNED: A preoperative low Zn level had a negative impact on early recurrence in esophageal cancer patients who underwent neoadjuvant chemotherapy. This suggests the need to administer Zn supplementation to patients with esophageal cancer who have preoperative Zn deficiency.
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  • 文章类型: Journal Article
    土壤盐分是主要的营养挑战,农业生产不佳,其特征是土壤中钠(Na)离子高。氧化锌纳米颗粒(ZnONPs)和生物炭作为减少生物和非生物胁迫的可持续策略而受到关注。然而,缺乏有关将ZnONPs与生物炭结合以改善盐度胁迫(0,50,100mM)的信息。因此,本研究旨在研究单独使用ZnONPs(引发和叶面)以及与生物炭结合使用对盐度胁迫下菠菜植物生长和养分利用率的潜力。结果表明,以更高的速率(100mM)的盐度胁迫通过诱导氧化应激表现出最大的生长阻滞,导致光合速率和养分利用率降低。单独使用ZnONPs(引发和叶面)增强了生长,通过提高盐分胁迫下菠菜的抗氧化酶活性来提高其叶绿素含量和气体交换参数。同时,在ZnONPs与生物炭修饰的联合处理中观察到了显着且更明显的效果。更重要的是,ZnONPs与生物炭的叶面施用显着降低了根的Na含量57.69%,与相应的对照相比,菠菜的叶子为61.27%。此外,在ZnONPs与生物炭的叶面施用联合处理中也发现了更高的养分含量。总的来说,ZnONPs与生物炭联合应用被证明是缓解盐分胁迫和改善盐分胁迫下作物营养品质的有效和可持续策略。我们推断,与生物炭的组合相比,ZnONPs的叶面施用与生物炭的组合在改善作物营养状况和减轻盐度方面更有效。
    Soil salinity is a major nutritional challenge with poor agriculture production characterized by high sodium (Na+) ions in the soil. Zinc oxide nanoparticles (ZnO NPs) and biochar have received attention as a sustainable strategy to reduce biotic and abiotic stress. However, there is a lack of information regarding the incorporation of ZnO NPs with biochar to ameliorate the salinity stress (0, 50,100 mM). Therefore, the current study aimed to investigate the potentials of ZnO NPs application (priming and foliar) alone and with a combination of biochar on the growth and nutrient availability of spinach plants under salinity stress. Results demonstrated that salinity stress at a higher rate (100 mM) showed maximum growth retardation by inducing oxidative stress, resulted in reduced photosynthetic rate and nutrient availability. ZnO NPs (priming and foliar) alone enhanced growth, chlorophyll contents and gas exchange parameters by improving the antioxidant enzymes activity of spinach under salinity stress. While, a significant and more pronounced effect was observed at combined treatments of ZnO NPs with biochar amendment. More importantly, ZnO NPs foliar application with biochar significantly reduced the Na+ contents in root 57.69%, and leaves 61.27% of spinach as compared to the respective control. Furthermore, higher nutrient contents were also found at the combined treatment of ZnO NPs foliar application with biochar. Overall, ZnO NPs combined application with biochar proved to be an efficient and sustainable strategy to alleviate salinity stress and improve crop nutritional quality under salinity stress. We inferred that ZnO NPs foliar application with a combination of biochar is more effectual in improving crop nutritional status and salinity mitigation than priming treatments with a combination of biochar.
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  • 文章类型: Journal Article
    这项研究旨在研究血清胆固醇水平与血清中锌(Zn)和铜(Cu)的比例与心血管疾病(CVD)发病率之间的关系。在研究的第一阶段,招募了9704名年龄在35至65岁之间的个体。队列研究的第二阶段包括7561名完成10年随访的参与者。在研究的基线测量的变量包括性别,年龄,收缩压(SBP),舒张压(DBP);生化参数,包括血清铜,Zn,铜锌比(Cu/Zn),锌铜比(Zn/Cu);由甘油三酯(TG)组成的空腹脂质分布,总胆固醇(TC),高密度脂蛋白(HDL),低密度脂蛋白(LDL)以及空腹血糖,和甘油三酯-葡萄糖(TyG)指数。应用决策树(DT)和逻辑回归(LR)模型来检查上述因素与CVD之间的关系。在7561名参与者中,有837名个体(378名男性和459名女性)被诊断出CVD。根据LR模型,SBP,TC,HDL,年龄,Zn/Cu,男性和SBP的TyG指数,年龄,TyG指数,HDL,TC,Cu/Zn,女性的Cu与CVD的相关性最高(p值≤0.033)。基于DT算法,88%的男性SPB<129.66mmHg,年龄较小(年龄<53岁),TyG指数<9.53,173≤TC<187mg/dL,HDL≥32mg/dL的CVD风险最低。此外,98%的女性SBP<128mmHg,TyG指数<9.68,年龄<44,TC<222mg/dL,HDL≥63.7mg/dL的CVD风险最低。可以得出结论,男性的Zn/Cu和女性的Cu/Zn,伴随着血脂异常和SBP,可以显著预测伊朗东北部人群的心血管疾病风险。
    This study aimed to examine the relationship between serum cholesterol levels and the ratio of zinc (Zn) and copper (Cu) in the blood serum and the incidence of cardiovascular disease (CVD). In Phase I of the study, 9704 individuals between the age of 35 and 65 years were recruited. Phase II of the cohort study comprised 7561 participants who completed the 10-year follow-up. The variables which were measured at the baseline of the study included gender, age, systolic blood pressure (SBP), diastolic blood pressure (DBP); biochemical parameters including serum Cu, Zn, copper-zinc ratio (Cu/Zn), zinc-copper ratio (Zn/Cu); fasted lipid profile consisting of triglycerides (TG), total cholesterol (TC), high-density lipoprotein (HDL), low-density lipoprotein (LDL) as well as fasting serum glucose, and triglycerides-glucose (TyG) index. Decision tree (DT) and logical regression (LR) models were applied to examine the relationship between the aforementioned factors and CVD. CVD was diagnosed in 837 individuals (378 males and 459 females) out of 7561 participants. According to the LR models, SBP, TC, HDL, age, Zn/Cu, and TyG index for males and SBP, age, TyG index, HDL, TC, Cu/Zn, and Cu for females had the highest correlation with CVD (p-value ≤ 0.033). Based on the DT algorithm, 88% of males with SPB < 129.66 mmHg, younger age (age < 53 years), TyG index < 9.53, 173 ≤ TC < 187 mg/dL, and HDL ≥ 32 mg/dL had the lowest risk of CVD. Also, 98% of females with SBP < 128 mmHg, TyG index < 9.68, age < 44, TC < 222 mg/dL, and HDL ≥ 63.7 mg/dL had the lowest risk of CVD. It can be concluded that the Zn/Cu for men and Cu/Zn for women, along with dyslipidemia and SBP, could significantly predict the risk of CVD in this cohort from northeastern Iran.
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  • 文章类型: Journal Article
    在本研究的第一阶段,通过用H3PO4化学活化榛子壳废料来生产活性炭。通过用氧化锌涂覆活性炭获得复合材料,其BET表面积计算为1278m2g-1。合成了ZnO掺杂的ZnO/AC复合材料作为吸附剂,其可能用于消除有机染料MB,并对其去除效率进行了研究。采用XRD等分析方法对ZnO/AC的形貌进行了表征,SEM,和下注。采用响应面法进行批量吸附实验,对吸附体系及其参数进行了考察和建模。实验设计包括三个pH水平(3、6.5和10),初始MB浓度(50、100和150mgL-1),剂量(0.1、0.3和0.5g100mL-1),和接触时间(5、50和95分钟)。RSM的结果表明,在实验因素的最佳条件下,MB的去除效率为98.7%。R2值,表达了模型的意义,被确定为99.05%。吸附研究表明,与Freundlich相比,平衡数据与Langmuir等温线模型吻合良好。最大吸附容量计算为270.70mgg-1。
    The activated carbon was produced in the first phase of this investigation by chemically activating hazelnut shell waste with H3PO4. Composite materials were obtained by coating the activated carbon with zinc oxide, whose BET surface area was calculated as 1278 m2 g-1. ZnO-doped ZnO/AC composite was synthesized as an adsorbent for its possible application in the elimination of organic dyestuff MB, and its removal efficiency was investigated. Morphological properties of ZnO/AC were characterized using analytical methods such as XRD, SEM, and BET. The adsorption system and its parameters were investigated and modeled using the response surface method of batch adsorption experiments. The experimental design consisted of three levels of pH (3, 6.5, and 10), initial MB concentration (50, 100, and 150 mg L-1), dosage (0.1, 0.3, and 0.5 g 100 mL-1), and contact time (5, 50, and 95 min). The results from the RSM suggested that the MB removal efficiency was 98.7% under the optimum conditions of the experimental factors. The R2 value, which expresses the significance of the model, was determined as 99.05%. Adsorption studies showed that the equilibrium data fit well with the Langmuir isotherm model compared to Freundlich. The maximum adsorption capacity was calculated as 270.70 mg g-1.
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  • 文章类型: Journal Article
    血清微量元素和氧化应激因子与糖尿病微血管并发症有关。这项研究是为了调查微量元素之间的复杂关系,氧化应激因素,以及老年人糖尿病微血管并发症的严重程度。
    本研究包括有或没有2型糖尿病的患者,和血糖,血脂,微量元素(铁,镁,锌),氧化应激因素(丙二醛(MDA),一氧化氮(NO),超氧化物歧化酶(SOD),和总抗氧化能力(T-AOC)进行评估。还估计了老年糖尿病患者糖尿病微血管并发症严重程度的危险因素。
    空腹血糖(FBG)差异有统计学意义,甘油三酯(TG),低密度脂蛋白(LDL),糖化血红蛋白(HbAlc),MDA,NO,SOD,T-AOC,镁,两组间锌含量差异有统计学意义(P<0.05)。铁(rZn=0.147,rSOD=0.180,rT-AOC=0.193,P<0.05)与锌呈正相关,SOD和T-AOC。铁与MDA呈负相关(rMDA=-0.146,P<0.05)。镁与SOD呈正相关(r镁=0.147,P<0.05)。锌(rSOD=0.616,rT-AOC=0.575,P<0.01)与SOD、T-AOC呈正相关。锌(rMDA=-0.636,rNO=-0.616,P<0.01)与MDA呈正相关,与NO呈负相关。病程(18.653,[5.726;60.764],P<0.01),FBG(1.265,[1.059;1.511],P<0.05),HbAlc(1.545,[1.431;1.680],P<0.01),MDA(2.989,[1.900;4.702],P<0.01)是糖尿病微血管并发症严重程度的危险因素。锌(0.680,[0.503;0.919],P<0.05)和SOD(0.820,[0.698;0.964],P<0.05)是糖尿病微血管并发症严重程度的保护因素。
    血清微量元素与2型糖尿病老年人的氧化应激水平有关。老年糖尿病患者的微量元素更稳定,氧化应激越低,糖尿病微血管并发症越少。
    UNASSIGNED: Serum trace elements and oxidative stress factors are related to diabetic microvascular complications. The study was to investigate the complex relationship between trace elements, oxidative stress factors, and the severity of microvascular complications of diabetes in older adults.
    UNASSIGNED: The present study included patients with or without type 2 diabetes, and blood glucose, blood lipids, trace elements (iron, magnesium, zinc), oxidative stress factors (malondialdehyde (MDA), nitric oxide (NO), superoxide dismutase (SOD), and total antioxidant capacity (T-AOC)) were evaluated. Risk factors for the severity of diabetic microvascular complications in older adults with diabetes were also estimated.
    UNASSIGNED: There were statistically significant differences in fasting blood glucose (FBG), triglycerides (TG), low density lipoprotein (LDL), glycated hemoglobin (HbAlc), MDA, NO, SOD, T-AOC, magnesium, and zinc between the two groups (P<0.05). Iron (rZinc = 0.147, rSOD = 0.180, rT-AOC = 0.193, P < 0.05) was positively correlated with zinc, SOD and T-AOC. Iron was negatively correlated with MDA (rMDA = -0.146, P < 0.05). Magnesium was positively correlated with SOD (rMagnesium = 0.147, P < 0.05). Zinc (rSOD = 0.616, rT-AOC = 0.575, P < 0.01) was positively correlated with SOD and T-AOC. Zinc (rMDA =-0.636, rNO=-0.616, P<0.01) was positively correlated with MDA and negatively correlated with NO. The course of disease (18.653, [5.726; 60.764], P <0.01), FBG (1.265, [1.059; 1.511], P <0.05), HbAlc (1.545, [1.431; 1.680], P <0.01), MDA (2.989, [1.900; 4.702], P <0.01) were risk factor for the severity of diabetic microvascular complications. Zinc (0.680, [0.503; 0.919], P < 0.05) and SOD (0.820, [0.698; 0.964], P < 0.05) were protective factors for the severity of diabetic microvascular complications.
    UNASSIGNED: Serum trace elements are related to oxidative stress levels in older adults with type 2 diabetes. The more stable trace element in older adults with diabetes, the lower the oxidative stress and the fewer microvascular complications of diabetes.
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  • 文章类型: Editorial
    这篇社论讨论了易卜拉欣等人的病例对照研究,发表在最近一期的《世界临床儿科杂志》上。儿童支气管哮喘是一种慢性炎症性呼吸道疾病。研究发现,氧化应激的增加导致抗氧化剂的减少,从而导致线粒体呼吸链复合物的氧化损伤,从而导致气道炎症,粘液分泌过多,引起一系列临床表现,包括反复发作的咳嗽,喘息,呼吸困难和呼吸急促。由于氧化应激介导哮喘的炎症反应,补充抗氧化剂可能是治疗这种疾病的一种策略。锌是一种抗氧化剂,在哮喘和气道炎症中引起了广泛的关注。锌是人体代谢的关键微量元素,有助于调节基因表达,酶活性,和蛋白质结构。除了锌,在炎症的情况下,游离血清铁蛋白水平也升高。先前的几项研究发现,铁蛋白水平除了追踪疾病活动外,还可能有助于确定疾病的病理和预测预后。然而,这项研究的结果与以前的研究结果不同,锌水平在哮喘儿童和非哮喘儿童之间没有显着差异,但与对照组相比,哮喘儿童的铁蛋白水平明显较高。因此,包括锌和铁蛋白在内的生化营养评估作为哮喘严重程度生物标志物的可能作用应在未来进行评估.
    This editorial discusses a case-control study by Ibrahim et al, published in the recent issue of the World Journal of Clinical Pediatrics. Childhood bronchial asthma is a chronic inflammatory respiratory disease. It was found that an increase in oxidative stress leads to a decrease in antioxidants causing oxidative damage to mitochondrial respiratory chain complexes resulting in the inflammation of the airway, hypersecretion of mucus causing a cascade of clinical manifestations ranging from recurrent episodes of coughing, wheezing, and breathlessness to shortness of breath. Since oxidative stress mediates the inflammatory response in asthma, the supplementation of anti-oxidants can be one strategy to manage this disease. Zinc is one such antioxidant that has attracted much attention about asthma and airway inflammation. Zinc is a crucial trace element for human metabolism that helps to regulate gene expression, enzyme activity, and protein structure. Apart from zinc, free serum ferritin levels are also elevated in case of inflammation. Several previous studies found that ferritin levels may also help determine the pathology of disease and predict prognosis in addition to tracking disease activity. However, this study\'s results were different from the findings of the previous studies and the zinc levels did not show a significant difference between asthmatic children and non-asthmatic children but ferritin levels were significantly high in asthmatic children as compared to the controls. Hence, the possible role of the biochemical nutritional assessment including zinc and ferritin as biomarkers for asthma severity should be assessed in the future.
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  • 文章类型: Journal Article
    手指小米,像其他谷物一样,含有大量结合矿物质的抗营养素,使它们无法吸收。本研究探讨了传统发酵对营养的影响,抗营养,以及随后的矿物质生物可及性(特别是铁,锌,和钙)基于Injera的小米手指。分析了由浅棕色和白色手指小米品种制备的发酵面团和Injera样品的营养成分,抗营养含量,和矿物质生物可及性遵循标准程序。除了一些例外,发酵面团的组成受发酵时间的影响很大。与未发酵的面粉相比,发酵面团和Injera样品的植酸和缩合单宁含量显着降低(p<0.05)。随着发酵时间的增加,白指小米Injera的植酸盐和缩合单宁含量急剧下降,与基于Injera的浅棕色手指小米相比。以手指小米和玉米复合粉制备的Injera的矿物质生物可及性随发酵时间的增加而增加,导致生物可接触铁的显著增加,锌,还有钙,范围从15.4-40.0%,26.8-50.8%,和60.9-88.5%,分别。结果表明,传统发酵可以成为降低植酸和缩合单宁含量的有效方法,同时增加了基于Injera的手指小米的制备中矿物质的生物可及性。
    Finger millet, like other cereals, contains high amounts of antinutrients that bind minerals, making them unavailable for absorption. This study explores the effect of traditional fermentation on nutritional, antinutritional, and subsequent mineral bioaccessibility (specifically iron, zinc, and calcium) of finger millet based Injera. Samples of fermented dough and Injera prepared from light brown and white finger millet varieties were analyzed for nutritional composition, antinutritional content, and mineral bioaccessibility following standard procedures. With some exceptions, the proximate composition of fermented dough was significantly affected by fermentation time. Compared to unfermented flour, the phytate and condensed tannin content significantly (p < 0.05) decreased for fermented dough and Injera samples. A strong decline in phytate and condensed tannin content was observed in white finger millet Injera as fermentation time increased, compared to light brown finger millet based Injera. The mineral bioaccessibility of Injera prepared from finger millet and maize composite flour increased with fermentation time, leading to a significant increase in bioaccessible iron, zinc, and calcium, ranging from 15.4-40.0 %, 26.8-50.8 %, and 60.9-88.5 %, respectively. The results suggest that traditional fermentation can be an effective method to reduce phytate and condensed tannin content, simultaneously increasing the bioaccessibility of minerals in the preparation of finger millet based Injera.
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