腸内微生物群は,環境中毒物質に対する解毒反応を促進します

Ian N Krout^1,2, Rie Matsuzaki¹, Alexandria C White^1,2

¹Department of Cell Biology, Emory University School of Medicine, Atlanta GA 30322.

bioRxiv : the preprint server for biology

|September 2, 2025

まとめ

腸内微生物群は虫殺剤のデルタメスリンを解毒するのに不可欠です特定の微生物は腸内の保護性解毒酵素を活性化させ環境中毒反応における微生物群の役割を強調します

科学分野:

環境毒性学
微生物群の研究
ホストと病原体の相互作用

背景:

ホスト環境のインターフェースは,原生微生物群と外来物質の相互作用を含みます.
環境中毒物質は人間の健康にリスクをもたらすため,解毒メカニズムを理解する必要があります.

研究の目的:

ピレトロイド殺虫剤デルタメスリンに対する宿主の代謝と転写の解毒反応における微生物の役割を調査する.
微生物群がデルタメトリンの解毒に影響を与えるメカニズムを解明する.

主な方法:

ネズミにデルタメトリンの経口投与
微生物のないマウスの解毒反応と,従来型のコロニー化されたマウスの比較.
肝臓と腸の解毒酵素の活性に関する評価
特定の微生物によるモノコロニゼーション後の結腸遺伝子発現の分析.

主要な成果:

デルタメトリンの有効な代謝と転写の解毒には,微生物群が必要である.
デルタメトリンの曝露は腸内微生物の組成を変えますが,微生物によって直接代謝されません.
宿主の肝臓と腸の解毒反応は,細菌のないマウスでは減少している.
特定の微生物によるモノコロニゼーションは,大腸の解毒酵素発現を強化し,微生物のシグナル伝達に対する保護的役割を示しています.

結論:

微生物群はデルタメスリンのような環境有害物質に対するホストの解毒反応を活性化させる上で重要な役割を果たします
発達と活性微生物のシグナリングは,臓器区間の毒素解毒に寄与する.
微生物群は,毒素関連疾患のリスクと結果に影響を与える可能性があります.

さらに関連する動画

05:41

Therapeutic Evaluation of Fecal Microbiota Transplantation in an Interleukin 10-Deficient Mouse Model

Published on: April 6, 2022

3.0K

05:27

Gap Junctional Intercellular Communication: A Functional Biomarker to Assess Adverse Effects of Toxicants and Toxins, and Health Benefits of Natural Products

Published on: December 25, 2016

15.2K

関連する概念動画

01:22

Phase II Reactions: Glutathione Conjugation and Mercapturic Acid Formation

368

Glutathione, a tripeptide made up of glutamate, cysteine, and glycine, is a critical player in the detoxification of drugs and xenobiotics via a process known as glutathione conjugation or mercapturic acid formation. This phase II biotransformation reaction involves the covalent binding of glutathione to a drug or its metabolite, enhancing the compound's water solubility and enabling its excretion.
Several distinctive characteristics distinguish glutathione conjugation from other phase II...

368

01:26

Enhanced Elimination of Poison

576

Poison can be effectively removed from the gastrointestinal (GI) tract through various decontamination procedures.
Antidotes serve a crucial role in counteracting the effects of poison by inhibiting enzymes responsible for producing harmful drug metabolites. In some cases, these toxic metabolites can be neutralized by endogenous cosubstrates, which are maintained at specific concentrations to prevent interaction with cellular macromolecules and subsequent cell death.
Renal excretion is the...

576

00:46

Bioremediation

20.0K

Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.

20.0K

01:14

Drug Metabolism: Phase II Reactions

4.1K

Phase II reactions are essential for the detoxification and elimination of drugs from the body. These reactions involve the conjugation of parent drugs or their phase I metabolites with endogenous molecules, resulting in more hydrophilic drug conjugates. The primary conjugation reactions in this phase are sulfation and glucuronidation. Both sulfation and glucuronidation typically produce biologically inactive metabolites. However, in some cases involving prodrugs, active metabolites may be...

4.1K

01:29

Bacterial Flora of the Large Intestine

641

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.

641

01:36

Types of Toxins

2.0K

Humans continually engage with an environment rich in potentially harmful chemicals. These are introduced to our bodies through inhalation, ingestion, or skin contact. These chemicals exist in various forms, such as air and environmental pollutants, agricultural chemicals, organic solvents, and heavy metals.
Air pollutants, primarily gases, pose significant threats to respiratory health, leading to conditions like hypoxia, lung cancer, and in extreme cases, death.
Environmental pollutants like...