Related Experiment Video
Updated: Feb 11, 2026
06:40
The Dyspepsia Educational Tool As a Novel Aid in Dyspepsia Management
Published on: June 29, 2019
7.1K
Evaluation of a modified rat model for functional dyspepsia.
Qiankun Liang1, Yuan Yan1, Lanfang Mao2
1Department of Physiology, College of Basic Medicine, Lanzhou University, Lanzhou, China.
Summary
A new rat model for functional dyspepsia (FD) shows altered gastrointestinal motility and changes in key brain-gut peptides, including motilin, leptin, cholecystokinin (CCK), and vasoactive intestinal peptide (VIP). This model aids FD research.
Area of Science:
- Gastroenterology
- Neurogastroenterology
- Animal Models
Background:
- Functional dyspepsia (FD) is a common gastrointestinal disorder.
- Understanding the underlying mechanisms of FD is crucial for developing effective treatments.
- Existing animal models may not fully recapitulate the complexity of human FD.
Purpose of the Study:
- To establish and validate a modified rat model for functional dyspepsia (FD).
- To investigate alterations in gastrointestinal motility within this FD model.
- To analyze changes in brain-gut peptide levels in serum and brain-gut axis.
Main Methods:
- Male Wistar rats were subjected to a multi-factor stimulation protocol (semi-starvation, tail damping, provocation, forced exercise) to induce FD.
- Gastrointestinal motility was assessed by measuring intestinal propulsion and gastric emptying.
- Levels of motilin, leptin, cholecystokinin (CCK), and vasoactive intestinal peptide (VIP) were quantified using ELISA, immunohistochemistry, RT-PCR, and Western blot.
Main Results:
- The modified rat model exhibited significantly slowed intestinal propulsion and gastric emptying, attenuated gastrointestinal electric activity, and interrupted migrating motor complex (MMC).
- Serum and tissue levels of leptin and VIP were significantly increased, while motilin levels were decreased compared to controls.
- Cholecystokinin (CCK) levels showed differential changes, decreasing in the antrum and duodenum but increasing in the hypothalamus.
Conclusions:
- The established modified rat model successfully replicates key features of functional dyspepsia (FD).
- This validated model provides a valuable tool for further research into FD pathophysiology and therapeutic strategies.
- The observed changes in gastrointestinal motility and brain-gut peptides highlight potential targets for FD intervention.
Related Concept Videos
01:29Self-Evaluation Maintenance Model
330
The Self-Evaluation Maintenance (SEM) model offers a psychological framework to understand how individuals’ self-esteem is influenced by the achievements of others, particularly those with whom they share close personal bonds. The SEM model operates when personal rather than social identity guides individuals. Central to this model is the notion that individuals have an inherent desire to preserve a favorable self-image, which is continuously shaped by interpersonal comparisons and...
330
00:57Modified Boxplots
11.3K
A standard box and whisker plot informs us about the spread of the data in a given sample. One can identify the minimum value, maximum value, first quartile value, second quartile or median value, and third quartile.
However, the box plot does not tell the reader about outliers - values that lie far from the center of the data. We can modify the standard box and whisker plot to identify the outliers and visualize the actual spread of the data in a sample.
Initially, we calculate the adjusted...
However, the box plot does not tell the reader about outliers - values that lie far from the center of the data. We can modify the standard box and whisker plot to identify the outliers and visualize the actual spread of the data in a sample.
Initially, we calculate the adjusted...
11.3K
02:45Functional Groups
89.4K
Functional groups are a group of atoms with characteristic properties, which when linked to the carbon skeleton of a molecule, alter the properties of that molecule. For example, the presence of certain functional groups on a molecule will make them hydrophilic, whereas others will make them hydrophobic. These functional groups are an indispensable part of organic chemistry and important components of biological molecules, such as carbohydrates, proteins, lipids, and nucleic acids. Each...
89.4K
02:45Functional Groups
24.6K
24.6K
01:19Antiasthma Drugs: Leukotriene Modifiers
1.9K
Leukotriene modifiers, or cysteinyl leukotriene receptor antagonists, are medications used to manage chronic asthma. These agents target specific inflammatory mediators produced during arachidonic acid metabolism, an essential process in generating inflammation in the body.
Leukotriene modifiers work through two distinct mechanisms:
Leukotriene modifiers work through two distinct mechanisms:
1.9K
03:00Self-Evaluation: Self-Enhancement and Self-Verification
5.8K
Social psychologists have documented that feeling good about ourselves and maintaining positive self-esteem is a powerful motivator of human behavior (Tavris & Aronson, 2008). In the United States, members of the predominant culture typically think very highly of themselves and view themselves as good people who are above average on many desirable traits (Ehrlinger, Gilovich, & Ross, 2005). Often, our behavior, attitudes, and beliefs are affected when we experience a threat to our...
5.8K