vitamins

维生素
  • 文章类型: Journal Article
    Patients with malabsorptive conditions can develop micronutrient deficiencies, even if they receive vitamins, minerals, or trace elements through their enteral or parenteral nutrition. Additionally, clinicians have faced challenges with micronutrient supplementation during parenteral product shortages and when transitioning patients from parenteral to enteral/oral nutrition. Evaluating micronutrient deficiencies through laboratory markers has various limitations, including that many are acute phase reactants, may not reflect storage status, or may not be readily available in clinical practice. Furthermore, clinicians can become overwhelmed with the variety of vitamin and mineral products available, the differences in dosages and ingredients in these products, and lastly, the inherent challenges associated with an impaired gastrointestinal tract. The current review will discuss some challenges clinicians may encounter in clinical practice during the evaluation, assessment, and prescription of micronutrient supplementation in patients with malabsorptive conditions.
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  • 文章类型: Journal Article
    This comprehensive study aimed to determine the level of nutritional compounds (20 amino acids, 11 phenolic acids, and 8 vitamins) and hazard compounds (14 mycotoxins) in ten types of conventional and ecological nuts from 25 countries. Moreover, chronic and acute toxicological risk assessment of mycotoxins was performed. Examined constituents were determined using LC-MS/MS. Ecological pine nuts showed the highest level of amino acids (233.87 g kg-1) compared to conventional (207 g kg-1), pecans-phenolic acids (816.6 mg kg-1 in ecological and 761 mg kg-1 in conventional), while pistachios-vitamins (3471.4 mg kg-1 in ecological and 3098.4 mg kg-1 in conventional). Increased concentration of mycotoxins was determined in conventional peanuts (54 μg kg-1) and walnuts (49.9 μg kg-1). Children were the most exposed population to acute intoxication with HT-2 toxin in conventional pistachios (20.66% ARfD). The results confirmed the nutritional importance of ecological nuts and emphasized the need for continuous screening of mycotoxins.
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  • 文章类型: Journal Article
    这项研究旨在确定连续三天的能量和营养素摄入量的变化,包括轮班当天,以及轮班前后的日子,在24小时轮班制工作的医护人员中。这项研究是一项观察性随访研究,共有500名志愿者医疗保健专业人员进行。连续3天进行食物消费记录:班前(休息日),轮班日(24小时轮班),和轮班后(休息日)。平均每日能量摄入量,碳水化合物,蛋白质,脂肪,饱和脂肪,咖啡因,维生素B1,B2,烟酸,B6,叶酸,和B12,钾,镁,磷,铁,和锌从最高到最低列出为轮班日>班前>班后(所有成对比较p<0.05)。虽然纤维,维生素C,轮班日和班前日的钙摄入量相似,他们在轮班后的日子显着降低(p<0.05)。轮班后最低的饮食参考摄入量百分比是钙,纤维,还有叶酸,分别。在本研究中,在能量中检测到显著差异,微量营养素摄入,以及轮班前一天之间的大量营养素摄入水平,轮班日,和医护人员下班后的一天。尤其是在24小时轮班后的第一天,应提高对营养素摄入量减少的认识。应该采取适当的预防措施来增加钙,纤维,和叶酸摄入量。
    This study aimed to determine changes in energy and nutrient intakes over three consecutive days, including the day of the shift, and the days before and after the shift, in healthcare workers working in a 24 h shift system. This study is an observational follow-up study conducted with a total of 500 volunteer healthcare professionals. Food consumption records were taken over 3 consecutive days: pre-shift (off day), shift day (24 h shift), and post-shift (off day). Mean daily intakes of energy, carbohydrate, protein, fat, saturated fat, caffeine, vitamins B1, B2, niacin, B6, folate, and B12, potassium, magnesium, phosphorus, iron, and zinc are listed from highest to lowest as shift day > pre-shift > post-shift (p < 0.05 for all pairwise comparisons). While fiber, vitamin C, and calcium intakes were similar on the shift day and pre-shift day, they were significantly lower on the post-shift day (p < 0.05). The lowest dietary reference intake percentages on the post-shift day were calcium, fiber, and folate, respectively. In the present study, significant differences were detected in the energy, micronutrient-intake, and macronutrient-intake levels between the pre-shift day, shift day, and post-shift day of healthcare workers. Awareness should be increased regarding the decreased nutrient intake seen especially on the first day after a 24 h shift, and appropriate precautions should be taken to increase calcium, fiber, and folate intake levels.
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  • 文章类型: Journal Article
    背景:口服营养补充剂(ONS)对于支持儿科人群的营养需求至关重要,特别是那些有医疗条件或饮食不足的人。ONS中的生物活性化合物通过发挥超出基本营养的各种生理作用,在增强健康结果方面发挥着关键作用。然而,对儿科ONS中这些生物活性物质的全面了解仍然难以捉摸。
    目的:本系统叙述性综述旨在从儿科的角度对现有的关于口服营养补充剂中生物活性化合物的文献进行批判性评价。专注于他们的类型,来源,生物利用度,生理效应,和临床意义。
    方法:在主要的学术数据库中进行了系统的搜索,包括PubMed,Scopus,和WebofScience,采用与口服营养补充剂相关的预定义搜索词,生物活性物质,和儿科。2013年至2024年发表的研究被认为符合纳入条件。根据PRISMA指南进行数据提取和合成。
    结果:最初的搜索产生了558篇文章,其中72人符合纳入标准。纳入的研究涵盖了儿科ONS制剂中存在的各种生物活性化合物,包括,但不限于,维生素,矿物,氨基酸,益生元,益生菌,和植物营养素。这些生物活性物质来自各种天然和合成来源,并被发现对生长产生有益影响。发展,免疫功能,肠胃健康,认知功能,以及儿科人群的总体幸福感。然而,生物利用度的变化,给药,在不同的化合物和制剂中观察到临床疗效。
    结论:口服营养补充剂中的生物活性化合物为解决儿科人群面临的独特营养需求和健康挑战提供了有希望的途径。然而,进一步的研究是必要的,以阐明最佳的组成,剂量,以及这些生物活性物质在儿科ONS制剂中的临床应用。更深入地了解这些生物活性化合物及其与儿科健康的相互作用可能为儿科临床实践中个性化和有效的营养干预铺平道路。
    BACKGROUND: Oral nutritional supplements (ONSs) are crucial for supporting the nutritional needs of pediatric populations, particularly those with medical conditions or dietary deficiencies. Bioactive compounds within ONSs play a pivotal role in enhancing health outcomes by exerting various physiological effects beyond basic nutrition. However, the comprehensive understanding of these bioactives in pediatric ONSs remains elusive.
    OBJECTIVE: This systematic narrative review aims to critically evaluate the existing literature concerning bioactive compounds present in oral nutritional supplements from a pediatric standpoint, focusing on their types, sources, bioavailability, physiological effects, and clinical implications.
    METHODS: A systematic search was conducted across the major academic databases, including PubMed, Scopus, and Web of Science, employing predefined search terms related to oral nutritional supplements, bioactives, and pediatrics. Studies published between 2013 and 2024 were considered eligible for inclusion. Data extraction and synthesis were performed according to the PRISMA guidelines.
    RESULTS: The initial search yielded 558 of articles, of which 72 met the inclusion criteria. The included studies encompassed a diverse range of bioactive compounds present in pediatric ONS formulations, including, but not limited to, vitamins, minerals, amino acids, prebiotics, probiotics, and phytonutrients. These bioactives were sourced from various natural and synthetic origins and were found to exert beneficial effects on growth, development, immune function, gastrointestinal health, cognitive function, and overall well-being in pediatric populations. However, variations in bioavailability, dosing, and clinical efficacy were noted across different compounds and formulations.
    CONCLUSIONS: Bioactive compounds in oral nutritional supplements offer promising avenues for addressing the unique nutritional requirements and health challenges faced by pediatric populations. However, further research is warranted to elucidate the optimal composition, dosage, and clinical applications of these bioactives in pediatric ONS formulations. A deeper understanding of these bioactive compounds and their interplay with pediatric health may pave the way for personalized and effective nutritional interventions in pediatric clinical practice.
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  • 文章类型: Journal Article
    我们日常饮食中常见的许多天然抗氧化剂通过抵消活性氧和氮物质的影响,已经证明对人类健康和各种疾病有显著的益处。它们的化学性质使一系列生物作用成为可能,包括抗高血压药,抗菌,抗炎,抗纤维化,和抗癌作用。尽管临床前研究取得了有希望的结果,关于它们在人类临床模型中的可重复性的争论持续存在.这一争议主要源于对这些化合物的药代动力学特性缺乏了解,再加上研究中主要关注单一疗法,忽略了不同抗氧化剂组合产生的潜在协同效应。这项研究旨在提供天然抗氧化剂的最新概述,在多治疗方法疗效优于单一治疗的假设下进行操作。此外,这项研究强调了将这些抗氧化剂融入日常饮食的重要性,因为它们有可能预防各种疾病的发生和发展。为了加强这种观点,关于治疗和预防非酒精性脂肪性肝病以及与缺血和再灌注现象相关的疾病的临床发现,包括心肌梗塞,术后心房颤动,和中风,作为关键参考。
    Numerous natural antioxidants commonly found in our daily diet have demonstrated significant benefits for human health and various diseases by counteracting the impact of reactive oxygen and nitrogen species. Their chemical properties enable a range of biological actions, including antihypertensive, antimicrobial, anti-inflammatory, anti-fibrotic, and anticancer effects. Despite promising outcomes from preclinical studies, ongoing debate persists regarding their reproducibility in human clinical models. This controversy largely stems from a lack of understanding of the pharmacokinetic properties of these compounds, coupled with the predominant focus on monotherapies in research, neglecting potential synergistic effects arising from combining different antioxidants. This study aims to provide an updated overview of natural antioxidants, operating under the hypothesis that a multitherapeutic approach surpasses monotherapy in efficacy. Additionally, this study underscores the importance of integrating these antioxidants into the daily diet, as they have the potential to prevent the onset and progression of various diseases. To reinforce this perspective, clinical findings pertaining to the treatment and prevention of non-alcoholic fatty liver disease and conditions associated with ischemia and reperfusion phenomena, including myocardial infarction, postoperative atrial fibrillation, and stroke, are presented as key references.
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  • 文章类型: Journal Article
    在糖尿病血糖水平升高的情况下,蛋白质的非酶糖基化加速。维生素和矿物质缺乏与糖尿病的发病和进展密切相关。各种水溶性和脂溶性维生素的抗糖基化能力,以及钼(Mo)等微量矿物质,锰(Mn),镁(Mg),铬,等。,已经使用牛血清白蛋白(BSA)作为体外模型进行了筛选。BSA与甲基乙二醛(MGO)在37°C下孵育48小时,与矿物质和维生素分开,以及对照和氨基胍(AG)作为比较矿物质和维生素功效的标准。Further,检查了它们对肾细胞(HEK-293)抗氧化潜力的影响。通过监测蛋白质糖基化标志物来测量抗糖基化潜力,结构和功能修改。一些矿物质,Mo,Mn,Mg,在最大生理浓度下,对蛋白质结合的羰基含量和β-淀粉样蛋白聚集的抑制作用相当。Mo和Mg保护了巯基和游离氨基酸,并保留了抗氧化潜力。维生素E,D,B1和B3显示显著的糖化抑制和改善的抗氧化潜力在HEK-293细胞通过评估脂质过氧化评估,SOD和乙二醛酶活性。这些结果强调了维生素和矿物质的糖化抑制潜力,表明这些微量营养素在糖尿病管理治疗前景中的应用前景。
    Nonenzymatic glycation of proteins is accelerated in the context of elevated blood sugar levels in diabetes. Vitamin and mineral deficiencies are strongly linked to the onset and progression of diabetes. The antiglycation ability of various water- and fat-soluble vitamins, along with trace minerals like molybdenum (Mo), manganese (Mn), magnesium (Mg), chromium, etc., have been screened using Bovine Serum Albumin (BSA) as in vitro model. BSA was incubated with methylglyoxal (MGO) at 37 °C for 48 h, along with minerals and vitamins separately, along with controls and aminoguanidine (AG) as a standard to compare the efficacy of the minerals and vitamins. Further, their effects on renal cells\' (HEK-293) antioxidant potential were examined. Antiglycation potential is measured by monitoring protein glycation markers, structural and functional modifications. Some minerals, Mo, Mn, and Mg, demonstrated comparable inhibition of protein-bound carbonyl content and ß-amyloid aggregation at maximal physiological concentrations. Mo and Mg protected the thiol group and free amino acids and preserved the antioxidant potential. Vitamin E, D, B1 and B3 revealed significant glycation inhibition and improved antioxidant potential in HEK-293 cells as assessed by estimating lipid peroxidation, SOD and glyoxalase activity. These results emphasize the glycation inhibitory potential of vitamins and minerals, indicating the use of these micronutrients in the prospect of the therapeutic outlook for diabetes management.
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  • 文章类型: Journal Article
    确定氧化还原失衡对多囊卵巢综合征患者临床演变的影响,并对补充维生素D的益处进行定性和定量预测。
    关键词多囊卵巢综合征的组合,维生素D,氧化应激,活性氧,抗氧化剂,在PubMed中使用了自由基,科克伦图书馆,LILACS,EMBASE,和WebofScience数据库。最后一次搜索是在2023年8月22日进行的。选择研究:根据纳入和排除标准,选择研究时考虑到低偏倚风险,在过去的5年中以英文出版,调查了补充维生素D对PCOS女性的影响,专注于氧化应激标志物。在检索到的136篇文章中,纳入6项干预研究(445名女性)。
    使用Jadad量表评估纳入研究的偏倚风险,使用ReviewManager5.4.1对连续数据进行分析和可视化,总结为标准化均数差异(SMD),置信区间(CI)为95%.
    维生素D可有效降低丙二醛(P=0.002)和总睾酮(P=0.0004)水平,并增加总抗氧化能力水平(P=0.01)。尽管改良的Ferriman-Gallwey多毛症评分可能有所改善,性激素结合球蛋白的水平,和游离雄激素指数进行鉴定,结果无统计学意义。
    维生素D是治疗PCOS的有希望的替代品,对氧化有积极的影响,新陈代谢,和内分泌失调的这种综合征。
    UNASSIGNED: To identify the impact of redox imbalance on the clinical evolution of patients with polycystic ovary syndrome and carry out a qualitative and quantitative projection of the benefits of vitamin D supplementation.
    UNASSIGNED: Combinations of the keywords polycystic ovary syndrome, vitamin D, oxidative stress, reactive oxygen species, antioxidant, and free radicals were used in PubMed, Cochrane Library, LILACS, EMBASE, and Web of Science databases. The last search was conducted on August 22, 2023.Selection of studies: Based on the inclusion and exclusion criteria, studies were selected considering a low risk of bias, published in the last 5 years in English, which investigated the effects of vitamin D supplementation in women with PCOS, focusing on oxidative stress markers. Of the 136 articles retrieved, 6 intervention studies (445 women) were included.
    UNASSIGNED: The risk of bias in included studies was assessed using the Jadad scale, and analysis and visualization of continuous data were performed using Review Manager 5.4.1, summarized as standardized mean differences (SMD) with confidence intervals (CI) of 95%.
    UNASSIGNED: Vitamin D effectively reduced malondialdehyde (P=0.002) and total testosterone (P=0.0004) levels and increased total antioxidant capacity levels (P=0.01). Although possible improvements in the modified Ferriman-Gallwey hirsutism score, levels of sex hormone-binding globulin, and free androgen index were identified and the results were not statistically significant.
    UNASSIGNED: Vitamin D is a promising alternative for the treatment of PCOS with a positive influence on the oxidative, metabolic, and endocrine disorders of this syndrome.
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  • 文章类型: Journal Article
    增强玉米仁油对于提高脂溶性维生素的生物利用度至关重要。这里,我们使用标记辅助选择(MAS)将dgat1-2和fatb的有利等位基因结合到四个富含多种营养的玉米杂交种(APTQH1,APTQH4,APTQH5和APTQH7)的亲本品系中。亲本系具有crtRB1,lcyE的有利等位基因,vte4和opaque2基因。基因特异性标记可在BC1F1,BC2F1和BC2F2中成功进行前景选择,而使用全基因组微卫星标记(127-132)的背景选择可实现93%的轮回亲本基因组恢复。所得自交系表现出显著较高的油(6.93%)和油酸(OA,40.49%)和低棕榈酸(PA,14.23%)与维生素原A(11.77ppm)升高的原始自交系相比,维生素E(16.01ppm),赖氨酸(0.331%)和色氨酸(0.085%)。油含量从原始杂种的4.80%显着增加到重组杂种的6.73%,使它们成为高油玉米杂交种。与原始杂种相比,这些杂种的油含量增加了35.70%,OA增加了51.56%,PA减少了36.32%,同时保持较高的维生素原A(两倍),维生素E(九倍),与正常杂种相比,赖氨酸(两倍)和色氨酸(两倍)。脂质健康指数显示动脉粥样硬化改善,血栓形成性,胆固醇血症,可氧化性,MAS衍生基因型相对于原始版本的过氧化性和营养价值。此外,MAS衍生的自交系和杂种表现出与原始版本相当的谷物产量和表型特征。研究中开发的玉米杂交种具有高籽粒油和OA的高产能力,PA低,更好的脂肪酸健康和营养特性,更多的多种维生素和平衡的氨基酸,这对于以快速的方式可持续地解决营养不良和不断增长的石油需求具有巨大的意义。
    Enhancing maize kernel oil is vital for improving the bioavailability of fat-soluble vitamins. Here, we combined favourable alleles of dgat1-2 and fatb into parental lines of four multi-nutrient-rich maize hybrids (APTQH1, APTQH4, APTQH5 and APTQH7) using marker-assisted selection (MAS). Parental lines possessed favourable alleles of crtRB1, lcyE, vte4 and opaque2 genes. Gene-specific markers enabled successful foreground selection in BC1F1, BC2F1 and BC2F2, while background selection using genome-wide microsatellite markers (127-132) achieved 93% recurrent parent genome recovery. Resulting inbreds exhibited significantly higher oil (6.93%) and oleic acid (OA, 40.49%) and lower palmitic acid (PA, 14.23%) compared to original inbreds with elevated provitamin A (11.77 ppm), vitamin E (16.01 ppm), lysine (0.331%) and tryptophan (0.085%). Oil content significantly increased from 4.80% in original hybrids to 6.73% in reconstituted hybrids, making them high-oil maize hybrids. These hybrids displayed 35.70% increment in oil content and 51.56% increase in OA with 36.32% reduction in PA compared to original hybrids, while maintaining higher provitamin A (two-fold), vitamin E (nine-fold), lysine (two-fold) and tryptophan (two-fold) compared to normal hybrids. Lipid health indices showed improved atherogenicity, thrombogenicity, cholesterolaemic, oxidability, peroxidizability and nutritive values in MAS-derived genotypes over original versions. Besides, the MAS-derived inbreds and hybrids exhibited comparable grain yield and phenotypic characteristics to the original versions. The maize hybrids developed in the study possessed high-yielding ability with high kernel oil and OA, low PA, better fatty acid health and nutritional properties, higher multi-vitamins and balanced amino acids, which hold immense significance to address malnutrition and rising demand for oil sustainably in a fast-track manner.
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  • 文章类型: Journal Article
    鳄梨成熟需要复杂的物理化学转化,从而产生理想的消费特性;然而,它对特定代谢产物的影响及其品种依赖性仍未被探索。本研究采用LC-MS定量监测30种鳄梨果肉代谢产物,包括酚类化合物,氨基酸,核苷,维生素,植物激素,和相关化合物,从不成熟到过成熟阶段,在三个商业品种(哈斯,Fuerte,和培根)。多变量统计分析显示品种之间的显着代谢差异,导致潜在品种标记的鉴定。大多数监测的代谢物表现出动态的定量变化。虽然酚类化合物在成熟过程中通常会增加,注意到表儿茶素和绿原酸等例外。氨基酸和衍生物表现出高度依赖品种的进化,Fuerte表现出最高的浓度和最明显的波动。与penstemide相比,尿苷和脱落酸水平在成熟过程中不断增加。描述了培根品种的几种特征化合物,但需要进一步研究以进行鉴定和作用阐明。
    Avocado ripening entails intricate physicochemical transformations resulting in desirable characteristics for consumption; however, its impact on specific metabolites and its cultivar dependence remains largely unexplored. This study employed LC-MS to quantitatively monitor 30 avocado pulp metabolites, including phenolic compounds, amino acids, nucleosides, vitamins, phytohormones, and related compounds, from unripe to overripe stages, in three commercial varieties (Hass, Fuerte, and Bacon). Multivariate statistical analysis revealed significant metabolic variations between cultivars, leading to the identification of potential varietal markers. Most monitored metabolites exhibited dynamic quantitative changes. Although phenolic compounds generally increased during ripening, exceptions such as epicatechin and chlorogenic acid were noted. Amino acids and derivatives displayed a highly cultivar-dependent evolution, with Fuerte demonstrating the highest concentrations and most pronounced fluctuations. In contrast to penstemide, uridine and abscisic acid levels consistently increased during ripening. Several compounds characteristic of the Bacon variety were delineated but require further research for identification and role elucidation.
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  • 文章类型: Journal Article
    考虑到渗透预处理对干燥产品质量影响的不同发现,重要的是要确定渗透预处理是否可以保持或降低水果产品的质量。因此,本研究旨在通过荟萃分析研究渗透预处理对干果品质的影响。Scopus数据库用于搜索相关文章。遵循系统审查和荟萃分析方案的首选报告项目,确定了26项符合荟萃分析标准的研究。陈述包括统计数据(平均值,标准偏差,样本量)和调节变量(水果类型,渗透剂,溶液浓度,干燥方法,和干燥温度)。使用随机效应模型汇集数据后,使用OpenMEE软件进行荟萃分析。结果表明,干果实的总色差显著降低,可滴定酸度,总黄酮含量,和维生素B1和B3(P<0.05),并显着增加β-胡萝卜素和2,2-二苯基-1-吡啶酰肼水平(P<0.05)。渗透预处理不影响总酚含量和维生素C。亚组分析强调了调节剂变量对干果实品质的影响,每个水果对渗透预处理的反应不同。此外,使用10%的糖溶液作为添加剂有效地提高了干果的质量。此外,渗透脱水可以在60°C的温度下与对流干燥相结合,以获得最佳的干燥效果。
    Considering the diverse findings regarding the impact of osmotic pretreatment on the quality of dried products, it is important to determine whether osmotic pretreatment can either maintain or reduce the quality of fruit products. Thus, the present study aimed to scrutinize research regarding the influence of osmotic pretreatment on the qualities of dried fruits through meta-analysis. The Scopus database was used to search for relevant articles. Following the Preferred Reporting Items for Systematic Reviews and Meta-analyses protocol, 26 studies that met the criteria for meta-analysis were identified. The presentation included statistics (mean, standard deviation, sample size) and moderator variables (fruit types, osmotic agents, solution concentrations, drying methods, and drying temperatures). After pooling data using a random effects model, the OpenMEE software was used to conduct meta-analysis. The results showed that osmo-dried fruits had significantly decreased total color difference, titratable acidity, total flavonoid content, and vitamins B1 and B3 (P<0.05) and significantly increased β-carotene and 2,2-diphenyl-1-picrylhydrazyl levels (P<0.05). Osmotic pretreatment did not affect total phenolic content and vitamin C. Subgroup analysis highlighted the influence of moderator variables on the quality of osmo-dried fruits, with each fruit responding differently to osmotic pretreatment. Moreover, using 10% sugar solution as an additive effectively enhanced the quality of dried fruits. In addition, osmotic dehydration can be combined with convective drying at a temperature of 60°C for optimal results in the drying process.
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