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相关概念视频

Proteins: Dietary Sources and Requirements01:28

Proteins: Dietary Sources and Requirements

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Consuming animal-based products offers high-quality proteins that contain optimal levels and combinations of essential amino acids, crucial for tissue repair and growth. Foods like eggs, milk, fish, and most meats are a source of complete proteins. Legumes and cereals are abundant in proteins; however, they typically lack a full range of essential amino acids. As a result, they are considered incomplete protein sources. Some plant sources like soybeans, quinoa, and amaranth do contain complete...
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Protein Folding Quality Check in the RER01:29

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ER is the primary site for the maturation and folding of soluble and transmembrane secretory proteins. The calnexin cycle is a specific chaperone system that folds and assesses the confirmation of N-glycosylated proteins before they can exit the ER lumen. The primary players of this quality check pipeline are the lectins, ER-resident chaperones, and a glucosyl transferase enzyme. In case the calnexin system in the lumen fails to salvage a misfolded protein, it is transported to the cytoplasm...
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Key Elements for Plant Nutrition02:35

Key Elements for Plant Nutrition

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Like all living organisms, plants require organic and inorganic nutrients to survive, reproduce, grow and maintain homeostasis. To identify nutrients that are essential for plant functioning, researchers have leveraged a technique called hydroponics. In hydroponic culture systems, plants are grown—without soil—in water-based solutions containing nutrients. At least 17 nutrients have been identified as essential elements required by plants. Plants acquire these elements from the...
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Overview of Protein Metabolism01:21

Overview of Protein Metabolism

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Proteins are broken down into amino acids during digestion. Unlike fats and carbohydrates, which are stored for later use, proteins are not. Instead, amino acids are either used to produce ATP through oxidation or contribute to the creation of new proteins for the growth and repair of the body. Any surplus amino acids from the diet are converted into glucose or triglycerides rather than excreted.
Amino acids play various roles in the body once they are absorbed into cells. They are restructured...
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Protein and Protein Structure02:15

Protein and Protein Structure

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Proteins are one of the most abundant organic molecules in living systems and have the most diverse range of functions of all macromolecules. Proteins may be structural, regulatory, contractile, or protective. They may serve in transport, storage, or membranes; or they may be toxins or enzymes. Their structures, like their functions, vary greatly. They are all, however, amino acid polymers arranged in a linear sequence.
A protein's shape is critical to its function. For example, an enzyme...
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Protein Absorption01:12

Protein Absorption

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Proteins in the gastrointestinal tract typically come from food, but they can also originate from disintegrated cells or secreted enzymes. In the stomach, the enzyme pepsin breaks down these proteins into polypeptides. The fragments then move into the duodenum as a semi-fluid mass called chyme. Pancreatic proteases, such as trypsin and chymotrypsin, and intestinal brush border enzymes like carboxypeptidases further dismantle the polypeptides into tripeptides, dipeptides, and free amino acids.
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Using Caenorhabditis elegans as a Model System to Study Protein Homeostasis in a Multicellular Organism
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观点:开发一种以营养素为基础的蛋白质质量的框架.

Shavawn M Forester1, Emily M Jennings-Dobbs1, Shazia A Sathar2

  • 1Nutrient Institute LLC, Reno, NV, United States.

The Journal of nutrition
|June 10, 2023
PubMed
概括
此摘要是机器生成的。

新的必需氨基酸9 (EAA-9) 评分为蛋白质质量提供了个性化的方法,超越了蛋白质消化能力校正氨基酸评分 (PDCAAS) 的局限性. 这种基于营养的框架通过单独评估氨基酸来支持精密营养.

关键词:
迪亚斯·迪亚斯 (Diaz Diaz) 是一个这是一个PDCAAS.氨基酸是氨基酸中的一种.饮食建议 饮食建议氨酸 (leucine) 是一种蛋白质.lysine lysine lysine lysine 是一种类型的氨酸.精准营养 精准营养 精准营养蛋白质质量的蛋白质质量.

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科学领域:

  • 营养科学 营养科学
  • 生物化学 生物化学
  • 公共卫生 公共卫生

背景情况:

  • 目前的蛋白质质量评估,使用蛋白质消化能力纠正的氨基酸评分 (PDCAAS),依赖于蛋白质质量的一般化衡量.
  • PDCAAS基于限制性氨基酸和生物可用性因子,在可扩展性,透明性和添加性方面存在局限性.
  • 转向将氨基酸视为个体,代谢活性营养素的模式转变对于推进精密营养至关重要.

研究的目的:

  • 引入和验证Essential Amino Acid 9 (EAA-9) 评分,这是一个基于营养素的新型蛋白质质量评分框架.
  • 通过开发更具可扩展性,透明性和附加性评分系统来解决PDCAAS的局限性.
  • 根据个人的需要,为必需氨基酸提供个性化的饮食建议.

主要方法:

  • 基本氨基酸9 (EAA-9) 评分框架的开发.
  • 通过与PDCAAS进行比较,验证EAA-9评分.
  • 展示EAA-9框架在精密营养中的实际应用.

主要成果:

  • EAA-9评分是作为一种创新的,基于营养素的蛋白质质量评分框架而开发的.
  • 对比证实了EAA-9得分与已建立的PDCAAS相比的有效性.
  • 实际应用突出了EAA-9框架对精密营养的实用性.

结论:

  • EAA-9评分框架代表了蛋白质质量评估的重大进步,朝着精确营养方法迈进.
  • 这个框架允许个性化的必需氨基酸建议,考虑诸如年龄和代谢条件等因素.
  • EAA-9评分是确保通过饮食摄入足够的必需氨基酸的强大工具,增强公共卫生战略.