Related Experiment Video
Updated: Jun 16, 2026
11:17
Sensing of Barrier Tissue Disruption with an Organic Electrochemical Transistor
Published on: February 10, 2014
Interaction between food substances and the intestinal epithelium
1Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Japan. ams316@mail.ecc.u-tokyo.ac.jp
Bioscience, Biotechnology, and Biochemistry
|February 9, 2010
Summary
Dietary substances significantly impact small intestine functions, including nutrient absorption and barrier integrity. Understanding these food-IEC interactions is key to promoting gut health and overall well-being.
Area of Science:
- Gastroenterology
- Cell Biology
- Nutrition Science
Background:
- The small intestine performs vital functions: nutrient absorption, barrier maintenance, and immune signaling.
- Hormones and cytokines regulate intestinal functions, alongside dietary components.
- Intestinal epithelial cells (IECs) are crucial for modulating intestinal functions due to direct interaction with dietary contents.
Purpose of the Study:
- To investigate the interactions between food substances and intestinal epithelial cells (IECs).
- To understand the cellular and molecular mechanisms underlying these food-IEC interactions.
- To identify how dietary components modulate key intestinal functions.
Main Methods:
- Utilized cell-based in vitro assays to study food-IEC interactions.
- Examined effects at both cellular and molecular levels.
- Assessed impacts on transporter activity, tight junction permeability, and metabolic enzyme expression.
Main Results:
- A variety of food substances were found to modulate IEC functions.
- Specific effects observed on transporter activity and tight junction permeability.
- Dietary components influenced metabolic enzyme expression and immune functions.
Conclusions:
- Dietary substances are major modulators of intestinal functions.
- Understanding food-IEC interactions is essential for maintaining intestinal health.
- Modulation of intestinal functions by diet plays a critical role in promoting overall health.
Related Concept Videos
01:19Absorption of Nutrients
Absorption refers to taking dietary nutrients from the intestinal lumen for transportation throughout the body. After digestion in the small intestine, carbohydrates, proteins, and fats are broken down into simpler forms. These essential macronutrients and other vital substances, such as vitamins, minerals, and water, are then prepared for absorption into the bloodstream.
Enterocytes, which are specialized polar epithelial cells, line the mucosa of the small intestinal walls. These cells...
Enterocytes, which are specialized polar epithelial cells, line the mucosa of the small intestinal walls. These cells...
01:05Physiology of Enteric Nervous System and Gut Health
The gastrointestinal tract, responsible for the digestion and absorption of nutrients, is safeguarded by the intestinal barrier, which consists of secretory, physical, and immune components. At the forefront is the secretory barrier, composed of essential elements such as mucus, gut microbiota, and defense proteins. They collaborate to break down food particles, facilitate nutrient absorption, and maintain optimal gut health. These secretory components ensure the smooth functioning of the...
01:29Intestinal Phase of Digestion
The intestinal phase of digestion is the third and final stage of the digestive process, occurring after the cephalic and gastric phases. It begins when chyme, a partially digested mixture of food and digestive enzymes, enters the small intestine from the stomach. This phase is crucial for nutrient absorption and involves complex hormonal and enzymatic interactions.
The arrival of the chyme in the small intestine distends the duodenum, which triggers the enterogastric reflex. This distension...
The arrival of the chyme in the small intestine distends the duodenum, which triggers the enterogastric reflex. This distension...
01:27Histology of the Small Intestine
The small intestine exhibits a unique histological structure that significantly enhances its function in digestion and nutrient absorption. These structures include circular folds, villi, and various specialized cells that collectively facilitate the digestion of food.
The intestinal lining features transverse folds called circular folds, each housing fingerlike projections known as intestinal villi. These villi are covered by a layer of simple columnar epithelium, also referred to as...
The intestinal lining features transverse folds called circular folds, each housing fingerlike projections known as intestinal villi. These villi are covered by a layer of simple columnar epithelium, also referred to as...
01:22Physiology of the Gastrointestinal System II: Digestion and Absorption
The gastrointestinal (GI) tract, extending from the mouth to the anus, plays a pivotal role in the digestion and absorption of nutrients. This process involves both mechanical and chemical actions facilitated by various enzymes.
Digestion begins in the mouth, where food undergoes mechanical breakdown by chewing and combines with saliva. Salivary amylase, an enzyme in saliva, starts the breakdown of starches into maltose. The food then travels down the esophagus to the stomach.
In the stomach, a...
Digestion begins in the mouth, where food undergoes mechanical breakdown by chewing and combines with saliva. Salivary amylase, an enzyme in saliva, starts the breakdown of starches into maltose. The food then travels down the esophagus to the stomach.
In the stomach, a...
01:23Renewal of Intestinal Stem Cells
The intestinal epithelial lining rapidly renews every 4 to 5 days. The renewal is facilitated by intestinal stem cells (ISCs) located at the base of the crypt– a gland located at the bottom of each villus. ISCs divide asymmetrically to form new stem cells and progenitor daughter cells. The daughter cells are called transit-amplifying (TA) cells which move upwards along the crypt and either differentiate into absorptive cells– the enterocytes or secretory cells– including the goblet,...