Dihydrolipoamide dehydrogenase deficiency
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Dihydrolipoamide dehydrogenase deficiency is a severe condition that can affect several body systems. Signs and symptoms of this condition usually appear shortly after birth, and they can vary widely among affected individuals.
Descrição
Dihydrolipoamide dehydrogenase deficiency is a severe condition that can affect several body systems. Signs and symptoms of this condition usually appear shortly after birth, and they can vary widely among affected individuals.
A common feature of dihydrolipoamide dehydrogenase deficiency is a potentially life-threatening buildup of lactic acid in tissues (lactic acidosis), which can cause nausea, vomiting, severe breathing problems, and an abnormal heartbeat. Neurological problems are also common in this condition; the first symptoms in affected infants are often decreased muscle tone (hypotonia) and extreme tiredness (lethargy). As the problems worsen, affected infants can have difficulty feeding, decreased alertness, and seizures.
Liver problems can also occur in dihydrolipoamide dehydrogenase deficiency, ranging from an enlarged liver (hepatomegaly) to life-threatening liver failure. In some affected people, liver disease, which can begin anytime from infancy to adulthood, is the primary symptom. The liver problems are usually associated with recurrent vomiting and abdominal pain. Rarely, people with dihydrolipoamide dehydrogenase deficiency experience weakness of the muscles used for movement (skeletal muscles), particularly during exercise; droopy eyelids; or a weakened heart muscle (cardiomyopathy). Other features of this condition include excess ammonia in the blood (hyperammonemia), a buildup of molecules called ketones in the body (ketoacidosis), or low blood glucose levels (hypoglycemia).
Typically, the signs and symptoms of dihydrolipoamide dehydrogenase deficiency occur in episodes that may be triggered by fever, injury, or other stresses on the body. Affected individuals are usually symptom-free between episodes. Many infants with this condition do not survive the first few years of life because of the severity of these episodes. Affected individuals who survive past early childhood often have delayed growth and neurological problems, including intellectual disability, muscle stiffness (spasticity), difficulty coordinating movements (ataxia), and seizures.
Padrões de herança
The source lists the following possible inheritance patterns: Autosomal recessive. More than one pattern can apply in different cases.
Related genes
Other names
Dihydrolipoyl dehydrogenase deficiency
DLD deficiency
E3 deficiency
Lactic acidosis due to LAD deficiency
Lactic acidosis due to lipoamide dehydrogenase deficiency
Lipoamide dehydrogenase deficiency
Maple syrup urine disease, type III
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Leitura adicional e referências
- Dihydrolipoamide dehydrogenase deficiency; MedlinePlus, National Library of Medicine.
- Ambrus A, Adam-Vizi V. Molecular dynamics study of the structural basis of dysfunction and the modulation of reactive oxygen species generation by pathogenic mutants of human dihydrolipoamide dehydrogenase. Arch Biochem Biophys. 2013 Oct 15;538(2):145-55. doi: 10.1016/j.abb.2013.08.015. Epub 2013 Sep 3.
- Brassier A, Ottolenghi C, Boutron A, Bertrand AM, Valmary-Degano S, Cervoni JP, Chretien D, Arnoux JB, Hubert L, Rabier D, Lacaille F, de Keyzer Y, Di Martino V, de Lonlay P. Dihydrolipoamide dehydrogenase deficiency: a still overlooked cause of recurrent acute liver failure and Reye-like syndrome. Mol Genet Metab. 2013 May;109(1):28-32. doi: 10.1016/j.ymgme.2013.01.017. Epub 2013 Feb 1.
- Odievre MH, Chretien D, Munnich A, Robinson BH, Dumoulin R, Masmoudi S, Kadhom N, Rotig A, Rustin P, Bonnefont JP. A novel mutation in the dihydrolipoamide dehydrogenase E3 subunit gene (DLD) resulting in an atypical form of alpha-ketoglutarate dehydrogenase deficiency. Hum Mutat. 2005 Mar;25(3):323-4. doi: 10.1002/humu.9319.
- Quinonez SC, Leber SM, Martin DM, Thoene JG, Bedoyan JK. Leigh syndrome in a girl with a novel DLD mutation causing E3 deficiency. Pediatr Neurol. 2013 Jan;48(1):67-72. doi: 10.1016/j.pediatrneurol.2012.09.013.
- Quinonez SC, Thoene JG. Dihydrolipoamide Dehydrogenase Deficiency. 2014 Jul 17 [updated 2021 Sep 30]. In: Adam MP, Bick S, Mirzaa GM, Wallace SE, Amemiya A, editors. GeneReviews(R) [Internet]. Seattle (WA): University of Washington, Seattle; 1993-2026. Available from http://www.ncbi.nlm.nih.gov/books/NBK220444/
- Quintana E, Pineda M, Font A, Vilaseca MA, Tort F, Ribes A, Briones P. Dihydrolipoamide dehydrogenase (DLD) deficiency in a Spanish patient with myopathic presentation due to a new mutation in the interface domain. J Inherit Metab Dis. 2010 Dec;33 Suppl 3:S315-9. doi: 10.1007/s10545-010-9169-4. Epub 2010 Jul 21.
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