Familial mitochondrial intestinal pseudo-obstruction and neurogenic bladder
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Updated: Oct 15, 2026

A Mouse Model of Intestinal Partial Obstruction
Published on: March 5, 2018
1Pediatrics Department, Wolfson Medical Center, Holon, Israel.
Abstract:
Intestinal dysmotility and neurogenic bladder have been described as part of two autosomal-recessive mitochondrial disorders assumed to be due to a defect in communication between the nuclear and mitochondrial genomes: myoneurogastrointestinal encephalopathy (MNGIE) and diabetes insipidus, diabetes mellitus, optic atrophy, and deafness (Wolfram syndrome). Partial cytochrome c oxidase deficiency has been described in both. We describe three Ashkenazi Jewish siblings with progressive intestinal dysmotility, neurogenic bladder, and autonomic manifestations but no central nervous system involvement. Cytochrome c oxidase deficiency was demonstrated in peripheral and multiple intestinal muscle biopsies. Mitochondrial DNA analysis of an intestinal biopsy of patient 1 showed heteroplasmy consisting of a normal 16.5-kb band and an approximately 28-kb band, suggestive of a duplication. Mitochondrial DNA analysis of a muscle biopsy of patient 2 showed multiple deletions, mainly 10- and 11-kb bands. We suggest that this unique combination of intestinal pseudo-obstruction and neurogenic bladder could comprise a new autosomal-recessive mitochondrial disorder.
Insights
This study identifies a potential new mitochondrial disorder in Ashkenazi Jewish siblings presenting with intestinal dysmotility and neurogenic bladder, suggesting a nuclear-mitochondrial communication defect.
Area of Science:
- Genetics
- Mitochondrial Biology
- Neurology
Background:
- Autosomal-recessive mitochondrial disorders like MNGIE and Wolfram syndrome involve nuclear-mitochondrial genome communication defects.
- These disorders can manifest with intestinal dysmotility and neurogenic bladder, often with partial cytochrome c oxidase deficiency.
Observation:
- Three Ashkenazi Jewish siblings presented with progressive intestinal dysmotility, neurogenic bladder, and autonomic issues, but no central nervous system involvement.
- Cytochrome c oxidase deficiency was confirmed in peripheral and intestinal muscle biopsies.
- Mitochondrial DNA analysis revealed duplications and deletions, indicating genetic abnormalities.
Findings:
- The siblings exhibited a unique combination of intestinal pseudo-obstruction and neurogenic bladder.
- Evidence suggests a defect in nuclear-mitochondrial genome communication.
- Genetic analysis identified specific mitochondrial DNA alterations.
Implications:
- This presentation may represent a novel autosomal-recessive mitochondrial disorder.
- Understanding this disorder can improve diagnosis and management of gastrointestinal and bladder dysfunction in mitochondrial diseases.
- Further research is needed to elucidate the specific genetic defect and its pathogenic mechanisms.
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