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Mitochondrial neurogastrointestinal encephalopathy syndrome (MNGIE) is a rare autosomal recessive mitochondrial disease. [2] It has been previously referred to as polyneuropathy, ophthalmoplegia, leukoencephalopathy, and intestinal pseudoobstruction (POLIP syndrome). [3] The disease presents in childhood, but often goes unnoticed for decades.
A mitochondrial encephalomyopathy is a form of encephalomyopathy that is associated with a mitochondrial disease. MELAS syndrome Examples include MELAS syndrome and MERRF syndrome. These conditions can sometimes present together. [1] [2] KSS is sometimes included in this category, [3] but it is not included in this category in MeSH.
Mitochondrial DNA depletion syndrome (MDS or MDDS), or Alper's disease, is any of a group of autosomal recessive disorders that cause a significant drop in mitochondrial DNA in affected tissues. Symptoms can be any combination of myopathic , hepatopathic , or encephalomyopathic . [ 1 ]
Pearson syndrome is a mitochondrial disease characterized by sideroblastic anemia and exocrine pancreas dysfunction. Other clinical features are failure to thrive, pancreatic fibrosis with insulin-dependent diabetes and exocrine pancreatic deficiency, muscle and neurologic impairment, and, frequently, early death. It is usually fatal in infancy.
Mitochondrial myopathies are types of myopathies associated with mitochondrial disease. [1] Adenosine triphosphate ( ATP ), the chemical used to provide energy for the cell, cannot be produced sufficiently by oxidative phosphorylation when the mitochondrion is either damaged or missing necessary enzymes or transport proteins.
This protein plays a critical role in maintaining the levels of a particular lipid, called cardiolipin, located in the inner membrane of the mitochondria. A lack of tafazzin results in abnormalities in the structure and function of mitochondria, leading to the heart defects and other problems seen in this disorder. [citation needed] Type III ...
Mitochondria have their own circular genome which contains 37 genes, of which 22 code for tRNAs. [9] These tRNAs play an essential role in protein synthesis by transporting amino acids to the ribosome. [2] MIDD is caused by an A to G substitution in the mitochondrial DNA at position 3243, which encodes tRNALeu(UUR). [2]
Mitochondrial disease is a group of disorders caused by mitochondrial dysfunction. Mitochondria are the organelles that generate energy for the cell and are found in every cell of the human body except red blood cells .