Nutrients

营养素
  • 文章类型: Journal Article
    The United Nations (UN) emphasizes the pivotal role of sustainable agriculture in addressing persistent starvation and working towards zero hunger by 2030 through global development. Intensive agricultural practices have adversely impacted soil quality, necessitating soil nutrient analysis for enhancing farm productivity and environmental sustainability. Researchers increasingly turn to Artificial Intelligence (AI) techniques to improve crop yield estimation and optimize soil nutrition management. This study reviews 155 papers published from 2014 to 2024, assessing the use of machine learning (ML) and deep learning (DL) in predicting soil nutrients. It highlights the potential of hyperspectral and multispectral sensors, which enable precise nutrient identification through spectral analysis across multiple bands. The study underscores the importance of feature selection techniques to improve model performance by eliminating redundant spectral bands with weak correlations to targeted nutrients. Additionally, the use of spectral indices, derived from mathematical ratios of spectral bands based on absorption spectra, is examined for its effectiveness in accurately predicting soil nutrient levels. By evaluating various performance measures and datasets related to soil nutrient prediction, this paper offers comprehensive insights into the applicability of AI techniques in optimizing soil nutrition management. The insights gained from this review can inform future research and policy decisions to achieve global development goals and promote environmental sustainability.
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  • 文章类型: Journal Article
    Population-level variation and mechanisms behind insulin secretion in response to carbohydrate, protein, and fat remain uncharacterized. We defined prototypical insulin secretion responses to three macronutrients in islets from 140 cadaveric donors, including those with type 2 diabetes. The majority of donors\' islets exhibited the highest insulin response to glucose, moderate response to amino acid, and minimal response to fatty acid. However, 9% of donors\' islets had amino acid responses, and 8% had fatty acid responses that were larger than their glucose-stimulated insulin responses. We leveraged this heterogeneity and used multi-omics to identify molecular correlates of nutrient responsiveness, as well as proteins and mRNAs altered in type 2 diabetes. We also examined nutrient-stimulated insulin release from stem cell-derived islets and observed responsiveness to fat but not carbohydrate or protein-potentially a hallmark of immaturity. Understanding the diversity of insulin responses to carbohydrate, protein, and fat lays the groundwork for personalized nutrition.
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  • 文章类型: Journal Article
    胞吞作用代表一类受调节的主动转运机制。这些包括网格蛋白依赖和独立的机制,以及液相微胞饮作用和巨细胞作用,每个都表现出不同程度的特异性和能力。总的来说,这些机制促进货物内化进入细胞囊泡。妊娠是一种这样的生理状态,在该状态期间内吞作用可能起关键作用。成功的妊娠需要母体和胎儿细胞在母胎界面上持续的交流,以确保对半同种异体胎儿的免疫耐受,同时提供足够的保护,防止病原体感染。如病毒和细菌。它还需要通过母胎界面运输营养物质,但限制潜在有害的化学物质和药物,以允许胎儿发育。在这种情况下,红细胞增多症,一种特定形式的内吞作用,在免疫耐受和感染预防中起着至关重要的作用。胞吞作用也被认为在母胎界面的营养和毒素处理中起重要作用。虽然它的机制仍然不太了解。对内吞作用及其机制的全面了解不仅可以增强我们对母胎相互作用的认识,而且对于确定妊娠病理的发病机理并为治疗干预提供新的途径也是必不可少的。
    Endocytosis represents a category of regulated active transport mechanisms. These encompass clathrin-dependent and -independent mechanisms, as well as fluid phase micropinocytosis and macropinocytosis, each demonstrating varying degrees of specificity and capacity. Collectively, these mechanisms facilitate the internalization of cargo into cellular vesicles. Pregnancy is one such physiological state during which endocytosis may play critical roles. A successful pregnancy necessitates ongoing communication between maternal and fetal cells at the maternal-fetal interface to ensure immunologic tolerance for the semi-allogenic fetus whilst providing adequate protection against infection from pathogens, such as viruses and bacteria. It also requires transport of nutrients across the maternal-fetal interface, but restriction of potentially harmful chemicals and drugs to allow fetal development. In this context, trogocytosis, a specific form of endocytosis, plays a crucial role in immunological tolerance and infection prevention. Endocytosis is also thought to play a significant role in nutrient and toxin handling at the maternal-fetal interface, though its mechanisms remain less understood. A comprehensive understanding of endocytosis and its mechanisms not only enhances our knowledge of maternal-fetal interactions but is also essential for identifying the pathogenesis of pregnancy pathologies and providing new avenues for therapeutic intervention.
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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
    金属材料在富营养化环境中会受到严重腐蚀。高浓度氮磷污染物刺激的DO衰减对微生物的影响导致电化学和微生物腐蚀过程的耦合。然而,关于富营养化环境中微生物腐蚀机理的研究很少。本文讨论了海洋富营养化的腐蚀因素,总结了海洋富营养化对微生物腐蚀的影响及潜在机理,包括好氧生物膜腐蚀,好氧和厌氧混合生物膜腐蚀,和厌氧微生物电子转移腐蚀,阐述了在河口易污染地区服务材料的微生物腐蚀研究方法。微生物预防和控制,如营养限制和微生物种间竞争,在绿色保护领域具有研究价值。海洋富营养化环境中的微生物腐蚀机理研究对于环境监测的发展具有重要意义。水摄入和藻类控制技术,和腐蚀保护在污染环境。
    Metal materials undergo severe corrosion in eutrophic environments. The effect of DO decay stimulated by high concentrations of nitrogen and phosphorus pollutants on microorganisms leads to the coupling of electrochemical and microbial corrosion processes. However, there are few studies on microbial corrosion mechanisms in eutrophic environments. This article discusses the corrosive factors of marine eutrophication, summarizes the impact of marine eutrophication on microbial corrosion and the potential mechanisms, including aerobic biofilm corrosion, aerobic & anaerobic mixed biofilm corrosion, and anaerobic microbial electron transfer corrosion, and expounds on the research methods for microbial corrosion of materials serving in estuarine areas prone to pollution. Microbial prevention and control, such as nutrient restriction and microbial interspecies competition, are of research value in the field of green protection. Microbial corrosion mechanisms studies in marine eutrophication environments are significant for environment monitor development, water intake and algae control technologies, and corrosion protection in polluted environments.
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  • 文章类型: Journal Article
    有限的证据表明邻苯二甲酸酯暴露与生物衰老之间存在关系。这项研究调查了邻苯二甲酸酯暴露与生物衰老之间的关系,关注炎症的中介作用以及与膳食营养素摄入的相互作用。数据来自一项全国性的横断面调查,包括12,994名18岁及以上的参与者。在斑点尿液样品中检测到八种邻苯二甲酸酯代谢物。使用Klemera-Doubal方法-生物年龄(KDM-BA)加速度评估生物衰老,表型年龄(PA)加速度,和体内平衡失调(HD)。全身免疫-炎症指数(SII)评价全身炎症。使用线性回归评估邻苯二甲酸盐暴露与生物衰老之间的个体和组合关联,加权分位数和(WQS)回归,和分位数g计算(qgcomp)。参与者的平均年龄为47岁,50.7%的男性和44.8%的非西班牙裔白人。大多数邻苯二甲酸酯代谢物与KDM-BA加速度呈正相关(β=0.306-0.584),PA加速度(β=0.081-0.281),和HD(β=0.016-0.026)。亚组分析表明,男性,老年人,非西班牙裔白人是特别敏感的人群。WQS回归和qgcomp分析一致表明混合邻苯二甲酸盐暴露与HD之间存在正相关,强调MEHHP是最重要的代谢产物。中介分析显示,炎症部分介导了邻苯二甲酸酯代谢产物与生物衰老之间的关联。在特定的邻苯二甲酸酯代谢产物和膳食营养素(类胡萝卜素,维生素A,B1,B2,B6,B12,烟酸,和硒)摄入量。这些结果表明,邻苯二甲酸盐暴露与生物衰老之间的关联是由炎症介导的,营养摄入减轻了这种影响。
    Limited evidence has suggested a relationship between phthalate exposure and biological aging. This study investigated the association between phthalate exposure and biological aging, focusing on the mediating role of inflammation and the interaction with dietary nutrient intake. Data were analyzed from a nationwide cross-sectional survey comprising 12,994 participants aged 18 and above. Eight phthalate metabolites were detected in spot urine samples. Biological aging was assessed using the Klemera-Doubal method-biological age (KDM-BA) acceleration, phenotypic age (PA) acceleration, and homeostatic dysregulation (HD). The systemic immune-inflammation index (SII) evaluated systemic inflammation. The individual and combined associations between phthalate exposure and biological aging were assessed using linear regression, weighted quantile sum (WQS) regression, and quantile g-computation (qgcomp). The participants had a mean age of 47 years, with 50.7 % male and 44.8 % non-Hispanic white. Most phthalate metabolites were positively correlated with KDM-BA acceleration (β = 0.306-0.584), PA acceleration (β = 0.081-0.281), and HD (β = 0.016-0.026). Subgroup analysis indicated that men, older individuals, and non-Hispanic whites are particularly sensitive populations. WQS regression and qgcomp analyses consistently indicated a positive association between mixed phthalate exposure and HD, highlighting MEHHP as the most significant contributing metabolite. Mediation analyses showed inflammation partially mediated the association between phthalate metabolites and biological aging. Significant interactions regarding biological aging were found between specific phthalate metabolites and dietary nutrients (carotenoids, vitamins A, B1, B2, B6, B12, niacin, and selenium) intake. These findings indicated that the association between phthalate exposure and biological aging was mediated by inflammation, with nutrient intake mitigating this effect.
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  • 文章类型: Journal Article
    结论:过表达铜转运蛋白LbCOPT1导致菌根丛枝的丰度显着增加,这表明LbCOPT1在旨在提高枸杞共生养分吸收的育种计划中的潜在应用。
    CONCLUSIONS: Overexpressing the copper transporter LbCOPT1 leads to a notable increase in the abundance of mycorrhizal arbuscules that suggests the potential application of LbCOPT1 in breeding programs aimed at enhancing symbiotic nutrient uptake in Lycium barbarum L.
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  • 文章类型: Journal Article
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  • 文章类型: Journal Article
    蜜蜂是重要的昆虫传粉者,为美国的水果和坚果作物提供关键的授粉服务。他们面临的挑战可能是由于与农业集约化相关的栖息地丧失相关的压力。为了更好地理解这一点,觅食蜜蜂的花粉偏好以及通过在作物田和坚果果园中觅食蜜蜂带入蜂巢的花粉的营养概况可以提供有价值的信息。我们训练蜜蜂从蜂箱中采集花粉,这些蜂箱用于杏仁园的授粉服务,向日葵田,或来自行间种植的混合物种。用蜜蜂训练某种蜂巢花粉,我们应用了二元评分系统,测试这些预处理的觅食者的偏好。我们还对用于训练和测试的蜂巢花粉进行了代谢组学分析,以阐明其营养成分。不管预处理,蜜蜂收集了所有可用的花粉类型,主要选择蜂巢收集的混合物种花粉(MSP),其次是杏仁园花粉。蜂巢收集的MSP具有化学多样性,胆固醇含量最高,维生素,和植物化学物质槲皮素,山奈酚,香豆素,和奎宁,但对于必需氨基酸和多不饱和脂肪酸并不总是很高。尽管化学特征的多样性可能与植物物种多样性没有直接关系,我们的结果表明,觅食者在重申各种花卉资源的重要性时可以收集各种花粉类型。
    Honey bees are important insect pollinators that provide critical pollination services to fruit and nut crops in the US. They face challenges likely due to pressures associated with agricultural intensification related habitat loss. To better understand this, pollen preferences of foraging bees and the nutritional profile of pollen brought into hives by foraging bees in crop fields and nut orchards can provide valuable information. We trained bees to forage on bee-collected pollen from hives placed for pollination services in almond orchards, sunflower fields, or mixed species from inter-row plantings. Using bees trained to a certain kind of hive pollen, we applied a binary scoring system, to test preferences of these preconditioned foragers. We also performed metabolomic analyses of the hive pollen used for training and testing to elucidate their nutritional content. Irrespective of preconditioning, bees collected all the available choice pollen types, predominantly choosing hive-collected mixed species pollen (MSP), followed by almond orchard pollen. The hive-collected MSP was chemically diverse, richest in cholesterol, vitamins, and phytochemicals quercetin, kaempferol, coumarin, and quinine, but was not consistently high for essential amino acids and polyunsaturated fatty acids. Although diversity in chemical profiles may not directly relate to plant species diversity, our results suggest that foragers collect a variety of pollen types when available reiterating the importance of diverse floral resources.
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  • 文章类型: Journal Article
    这项研究旨在评估不同水平的高粱基饮食作为玉米替代品在肉鸡营养中的作用。将共320只1日龄雄性罗斯708肉鸡随机分配到4个处理组(每个处理5个围栏,每个围栏16只鸟),包括一个具有基础饮食的对照组和接受高粱饮食的20%的组,40%,100%替代玉米。对照组的总体体重增加显着(p<0.0001)更高,其次是20%,40%,和100%的高粱替代品。此外,20%高粱替代组的总采食量显著高于对照组和其他组(p<0.01)。饲喂基于高粱的日粮的肉鸡表现出显著(p<0.01)增加的饲料转化率。饲喂玉米和高粱的肉仔鸡的car体特性没有显着差异;但是,与40%和100%替代水平相比,20%高粱-玉米替代的粗蛋白消化率和表观代谢能显着增加(p<0.01)。回肠绒毛的高度和宽度在以玉米高粱为基础的饮食中没有差异,无论更换百分比如何。此外,在盲肠微生物群中,与40%和100%替代水平相比,20%玉米-高粱饮食中的乳酸杆菌计数显著(p<0.041)更高。这些发现表明,在肉鸡日粮中用高粱代替玉米高达20%的玉米对生长性能有积极影响。肠道健康,营养素消化率,和肉鸡的盲肠微生物群。然而,更大的替代品(40%和100%)可能会对肉鸡生产和健康产生负面影响。
    This study aimed to evaluate the effect of varying levels of sorghum-based diets as an alternative to maize in broiler nutrition. A total of 320 one-day-old male Ross 708 broiler chickens were randomly allocated to four treatment groups (5 pens per treatment and 16 birds per pen), comprising a control group with a basal diet and groups receiving sorghum-based diets with 20%, 40%, and 100% maize replacement. The overall weight gain was significantly (p < 0.0001) higher in the control group, followed by 20%, 40%, and 100% sorghum replacement. Additionally, overall feed intake was significantly (p < 0.01) higher in the 20% sorghum replacement group compared to the control and other groups. Broilers fed sorghum-based diets exhibited a significantly (p < 0.01) increased feed conversion ratio. Carcass characteristics showed no significant differences between broilers fed corn and sorghum; however, the digestibility of crude protein and apparent metabolizable energy significantly (p < 0.01) increased in the 20% sorghum-corn replacement compared to the 40% and 100% replacement levels. Ileal villus height and width did not differ among the corn-sorghum-based diets, regardless of the replacement percentage. Furthermore, among the cecal microbiota, Lactobacillus count was significantly (p < 0.041) higher in the 20% corn-sorghum diet compared to the 40% and 100% replacement levels. These findings suggest that replacing corn up to 20% of corn with sorghum in broiler diet positively impact growth performance, gut health, nutrient digestibility, and cecal microbiota in broilers. However, larger replacements (40% and 100%) may have negative implications for broiler production and health.
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