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Anatomy of the Intestines01:23

Anatomy of the Intestines

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Although digestion of proteins, carbohydrates, and lipids may begin in the stomach, it is completed in the intestine. The absorption of nutrients, water, and electrolytes from food and drink also occurs in the intestine. The intestines can be divided into two structurally distinct organs—the small and large intestines.
Small Intestines
The small intestine is an ~7 meter-long tube with an inner diameter of just 2.5 cm. Since most nutrients are absorbed here, the inner lining of the...
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Although the genetic makeup of an organism plays a major role in determining the phenotype, there are also several environmental factors, such as temperature, oxygen availability, presence of mutagens, that can alter an organism’s phenotype.
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...
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The gut microbiome is formed by a vast and diverse community of bacteria that colonizes our large intestine. These bacteria start residing in the gut from birth and continue diversifying throughout life, influenced by factors such as diet, lifestyle, and stress. The gut bacterial community also includes bacteria from food and those that enter the colon through the anus.
The normal gut flora of the colon plays a critical role in generating essential vitamins such as vitamins K, B5, and B7.
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Microbiota Analysis Using Two-step PCR and Next-generation 16S rRNA Gene Sequencing
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エクオール産生菌と非エクオール産生菌のフェノタイプの違い

J A Curiel1, S Langa1, A Ruiz de la Bastida1

  • 1Departamento de Tecnologı́a de Alimentos, 54402Instituto Nacional de Investigación y Tecnologı́a Agraria y Alimentaria (INIA-CSIC), Crta de la Coruña Km7.5, 28040, Madrid, Spain.

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まとめ
この要約は機械生成です。

エクオールを産生する腸内細菌は異なった代謝現象を呈し,イソフラボン代謝はエクオールを産生しない細菌と異なる. これらの現象的差異は,個人がイソフラボン摂取からどのように恩恵を受けるかについて説明します.

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科学分野:

  • 微生物学
  • メタボロミクス
  • 栄養薬

背景:

  • イソフラボン代謝産物であるエクオールは,ダイゼインから特定の腸内微生物群によって生成されます.
  • エクオール産生微生物群を持つ個人は,イソフラボン摂取から最も恩恵を受けると考えられています.
  • エコール産生微生物と非エコール産生微生物を区別する有意な遺伝子型差はありません.

研究 の 目的:

  • エコール産生菌と非エコール産生菌のイソフラボン代謝におけるフェノタイプの違いを調査する.
  • イソフラボンの健康効果を媒介する腸内微生物の役割を明らかにする.

主な方法:

  • イソフラボン代謝のための17の糞便サンプル分析.
  • デイドゼイン,ジヒドロデゼイン (DHD),ジェニステイン,ジヒドロゲニステイン (DHG) で化.
  • エクオール,5-ヒドロキシエクオール,O-デメチランゴレンシン (O-DMA) 生産の量化

主要な成果:

  • 6つのサンプルは,ダイゼインとDHDの両方からエクオールを生成した.
  • ゲニステインとDHGから生成されたエクオール生成のサンプルのみです.
  • エクオール生産者はイソフラボンを大量に代謝し,非生産者は限られた代謝を示した.
  • エクオールの生産者は,主にダイゼインから派生したO-DMAの濃度が低い.

結論:

  • エクオール産生菌と非エクオール産生菌の間のイソフラボン代謝には有意な現象的差異がある.
  • これらの代謝変異は,イソフラボンに対する宿主反応の違いを説明する.
  • 腸内微生物の代謝活動は,イソフラボン摂取の利点の実現に不可欠です.