Dextran sulfate sodium (DSS)-induced colitis in mice.

Area of Science:

• Gastroenterology
• Immunology
• Pathology

Background:

• Inflammatory bowel diseases (IBD), including ulcerative colitis and Crohn's disease, are complex conditions with unknown causes.
• Murine models are crucial for understanding IBD mechanisms and testing therapies.
• Chemically induced colitis models offer valuable insights into IBD pathogenesis.

Purpose of the Study:

• To provide a detailed protocol for the dextran sulfate sodium (DSS)-induced colitis model.
• To highlight factors critical for reproducible DSS-induced colitis studies.
• To serve as a guide for researchers utilizing this model in IBD studies.

Main Methods:

• Administration of dextran sulfate sodium (DSS) in drinking water to induce colitis in mice.
• Monitoring of clinical signs, disease activity index, and histopathological changes.
• Detailed description of procedural steps and critical parameters for model induction.

Main Results:

• The DSS model effectively mimics key features of human ulcerative colitis.
• Variability in DSS-induced pathology can be influenced by factors such as DSS molecular weight, concentration, and duration of administration.
• The protocol outlines methods to control these variables for consistent results.

Conclusions:

• The DSS-induced colitis model is a widely used and valuable tool for IBD research.
• Careful consideration of experimental details is essential for accurate and reproducible results.
• This protocol facilitates the effective use of the DSS model for mechanistic and therapeutic studies in IBD.