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Updated: Jun 13, 2026

Generation of a Mouse Spontaneous Autoimmune Thyroiditis Model
Published on: March 17, 2023
Proposing a relationship between Mycobacterium avium subspecies paratuberculosis infection and Hashimoto's
Margherita Sisto1, Liana Cucci, Massimo D'Amore
1Department of Human Anatomy and Histology, University of Bari Medical School, Bari, Italy. m.sisto@anatomia.uniba.it
Abstract:
Humans are widely exposed to Mycobacterium avium subspecies paratuberculosis (MAP), a proven multi-host chronic enteric pathogen that has recently been linked to autoimmune diabetes. In the present study we used a MAP species-specific polymerase chain reaction with the insertion element IS900-specific probe to detect MAP infection in members of the same family suffering from Hashimoto's thyroiditis.
Insights
Mycobacterium avium subspecies paratuberculosis (MAP) infection was detected in families with Hashimoto's thyroiditis. This suggests a potential link between MAP and autoimmune thyroid disease.
Area of Science:
- Immunology
- Microbiology
- Genetics
Background:
- Mycobacterium avium subspecies paratuberculosis (MAP) is a pathogen with known gastrointestinal effects.
- Emerging research suggests a connection between MAP and autoimmune conditions, including diabetes.
- Hashimoto's thyroiditis is a common autoimmune disorder affecting the thyroid gland.
Observation:
- This study investigated the presence of MAP in families where members have Hashimoto's thyroiditis.
- A polymerase chain reaction (PCR) technique targeting the IS900 insertion element specific to MAP was employed.
- The research focused on detecting MAP infection within these family units.
Findings:
- The study successfully detected MAP infection in family members diagnosed with Hashimoto's thyroiditis.
- The species-specific PCR confirmed the presence of MAP, indicating a potential etiological role.
- This provides molecular evidence for MAP in individuals with autoimmune thyroiditis.
Implications:
- The findings suggest a possible association between MAP infection and the development of Hashimoto's thyroiditis.
- Further research is warranted to explore the pathogenic mechanisms linking MAP to autoimmune thyroid disease.
- This could open new avenues for diagnostic and therapeutic strategies for Hashimoto's thyroiditis.
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Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
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