Related Experiment Video

Updated: Jul 12, 2026

A Model of Chronic Nutrient Infusion in the Rat
08:18

A Model of Chronic Nutrient Infusion in the Rat

Published on: August 14, 2013

[Circadian rhythm of intestinal glucose absorption in fasting and fed rats]

M I Voloshenovich, M A Labusheva, A M Ugolev

    Fiziologicheskii Zhurnal
    |January 1, 1993
    PubMed

    Keywords:
    Circadian rhythmGlucose absorptionFasting effectsIntestinal function

    More Related Videos

    Manipulation of Rhythmic Food Intake in Mice Using a Custom-Made Feeding System07:34

    Manipulation of Rhythmic Food Intake in Mice Using a Custom-Made Feeding System

    Published on: December 16, 2022

    Monitoring Circadian Oscillations with a Bioluminescence Reporter in Organoids05:44

    Monitoring Circadian Oscillations with a Bioluminescence Reporter in Organoids

    Published on: February 16, 2024

    Related Concept Videos

    Glucose Transporters01:27

    Glucose Transporters

    Glucose transporters facilitate the transport of glucose across the cell membrane. In addition to glucose, some glucose transporters can also aid the movement of other hexoses such as fructose, mannose, and galactose.
    Facilitated diffusion-glucose transporters (GLUTs) are encoded by the solute-linked carrier (SLC) family 2, subfamily A gene family, or SLC2A. The 14 GLUT protein members are distributed into three classes:
    Glucose Absorption Into the Small Intestine01:26

    Glucose Absorption Into the Small Intestine

    Complex carbohydrates consumed cannot be absorbed into the small intestine in their original form. First, they must be hydrolyzed to a monosaccharide form such as glucose or galactose. These monosaccharides are then transported across the intestinal membrane and into the blood via transcellular transport. The intestinal epithelial cells allow the movement of these monosaccharides with a defined 'entry' through membrane transporter proteins present on their apical membrane and 'exit' via the...
    Carbohydrate Absorption01:25

    Carbohydrate Absorption

    Carbohydrates are essential macronutrients that serve as the body's primary energy source. Their digestion begins in the mouth, where salivary amylase partially breaks down complex carbohydrates such as starch into smaller oligosaccharides. This mechanical and enzymatic activity prepares carbohydrates for further processing in the gastrointestinal tract.
    After being swallowed, the partially digested carbohydrates mix with gastric secretions in the stomach. However, the acidic environment...
    Metabolic States of the Body: The Absorptive State01:25

    Metabolic States of the Body: The Absorptive State

    During the absorptive state, which lasts approximately four hours after a meal, the body absorbs nutrients from the gastrointestinal tract. The carbohydrates, proteins, and lipids we consume are broken down into monosaccharides, amino acids, and free fatty acids for absorption. While carbohydrates and proteins are absorbed as-is, lipids are absorbed in their broken-down forms and then re-esterified into triglycerides within enterocytes before being packaged into chylomicrons. These absorbed...
    Metabolic States of the Body: The Postabsorptive State01:18

    Metabolic States of the Body: The Postabsorptive State

    The postabsorptive state usually starts about four hours after a meal and lasts until the next meal is eaten. During this time, the digestive system stops absorbing nutrients, and the body uses stored energy reserves to maintain stable blood glucose levels.
    Initially, glycogen stored in the liver is broken down to release glucose into the bloodstream, while glycogen in the muscles is broken down to supply glucose for energy directly within the muscle cells. As glycogen stores diminish,...
    Methods for Studying Drug Absorption: In situ01:09

    Methods for Studying Drug Absorption: In situ

    In situ experiments, such as the Doluisio method and Single-Pass Perfusion technique, provide critical insights into drug uptake by simulating in vivo conditions for drug absorption.
    The Doluisio method involves perfusing a prepared segment of a rat's small intestine with a solution of radiolabeled drug and a non-absorbable marker. This helps to differentiate between absorbed and non-absorbed drug concentrations. The intestinal segment is connected at both ends using tubing and syringes,...