Isolated sulfite oxidase deficiency
अंतिम अद्यतन 18 Aug 2020
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Isolated sulfite oxidase deficiency (ISOD) is a disorder of the nervous system, with a severe "classic" form that starts in the newborn period and a milder, late-onset form that begins later in infancy or early childhood.
विवरण
Isolated sulfite oxidase deficiency (ISOD) is a disorder of the nervous system, with a severe "classic" form that starts in the newborn period and a milder, late-onset form that begins later in infancy or early childhood.
Classic ISOD appears within the first few days after birth with signs and symptoms of brain dysfunction (encephalopathy) that quickly get worse. Babies with classic ISOD have seizures that are difficult to treat and feeding difficulties. They have muscle stiffness that results in paralysis of the arms and legs (spastic quadriplegia) and episodes of muscle spasms that cause backward arching of the spine (opisthotonus). Because development of the brain is impaired, the head does not grow at the same rate as the body, so it appears that the head is getting smaller as the body grows (progressive microcephaly). Abnormalities in facial features also become increasingly pronounced with lack of normal head growth. These facial differences include a relatively long and narrow face; deep-set, widely-spaced eyes; elongated openings of the eyes (palpebral fissures); puffy cheeks; a small nose; a large space between the nose and upper lip (a long philtrum); and thick lips.
Babies with classic ISOD do not respond to their environment except to startle easily in response to noises, and they do not develop any motor skills such as turning over or sitting up. They usually do not live for more than a few months. Affected individuals who survive past infancy usually develop displacement of the lenses of the eyes (ectopia lentis). Because these individuals do not react to visual stimuli (are behaviorally blind) due to the brain damage associated with classic ISOD, the ectopia lentis has no further impact on their vision.
Late-onset ISOD usually begins between the ages of 6 and 18 months, often after an illness involving fever. Individuals with this form of the disorder may not have the seizures and ectopia lentis that usually occur in the classic form. They have developmental delay and may lose skills that they had already developed (developmental regression). Movement problems occur in this form of the disorder, including muscle tensing (dystonia), uncontrolled movements of the limbs (choreoathetosis), and difficulty with coordination (ataxia). The signs and symptoms of late-onset ISOD can gradually get worse (progress), or they can be episodic, which means that they come and go. Some individuals with this form of ISOD survive into childhood or adolescence; because of the rarity of this disorder, their life expectancy is unknown.
Inheritance patterns
The source lists the following possible inheritance patterns: Autosomal recessive. More than one pattern can apply in different cases.
Related genes
Other names
Encephalopathy due to sulfite oxidase deficiency
ISOD
Sulfocysteinuria
Related patient information and medicines
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अधिक पठन और संदर्भ
- Isolated sulfite oxidase deficiency; MedlinePlus, National Library of Medicine.
- Bindu PS, Christopher R, Mahadevan A, Bharath RD. Clinical and imaging observations in isolated sulfite oxidase deficiency. J Child Neurol. 2011 Aug;26(8):1036-40. doi: 10.1177/0883073811401399. Epub 2011 May 13.
- Bosley TM, Alorainy IA, Oystreck DT, Hellani AM, Seidahmed MZ, Osman Mel F, Sabry MA, Rashed MS, Al-Yamani EA, Abu-Amero KK, Salih MA. Neurologic injury in isolated sulfite oxidase deficiency. Can J Neurol Sci. 2014 Jan;41(1):42-8. doi: 10.1017/s0317167100016243.
- Claerhout H, Witters P, Regal L, Jansen K, Van Hoestenberghe MR, Breckpot J, Vermeersch P. Isolated sulfite oxidase deficiency. J Inherit Metab Dis. 2018 Jan;41(1):101-108. doi: 10.1007/s10545-017-0089-4. Epub 2017 Oct 4.
- Karakas E, Kisker C. Structural analysis of missense mutations causing isolated sulfite oxidase deficiency. Dalton Trans. 2005 Nov 7;(21):3459-63. doi: 10.1039/b505789m. Epub 2005 Sep 26.
- Karakas E, Wilson HL, Graf TN, Xiang S, Jaramillo-Busquets S, Rajagopalan KV, Kisker C. Structural insights into sulfite oxidase deficiency. J Biol Chem. 2005 Sep 30;280(39):33506-15. doi: 10.1074/jbc.M505035200. Epub 2005 Jul 27.
- Rocha S, Ferreira AC, Dias AI, Vieira JP, Sequeira S. Sulfite oxidase deficiency--an unusual late and mild presentation. Brain Dev. 2014 Feb;36(2):176-9. doi: 10.1016/j.braindev.2013.01.013. Epub 2013 Feb 27.
- Sass JO, Gunduz A, Araujo Rodrigues Funayama C, Korkmaz B, Dantas Pinto KG, Tuysuz B, Yanasse Dos Santos L, Taskiran E, de Fatima Turcato M, Lam CW, Reiss J, Walter M, Yalcinkaya C, Camelo Junior JS. Functional deficiencies of sulfite oxidase: Differential diagnoses in neonates presenting with intractable seizures and cystic encephalomalacia. Brain Dev. 2010 Aug;32(7):544-9. doi: 10.1016/j.braindev.2009.09.005. Epub 2009 Sep 29.
- Tan WH, Eichler FS, Hoda S, Lee MS, Baris H, Hanley CA, Grant PE, Krishnamoorthy KS, Shih VE. Isolated sulfite oxidase deficiency: a case report with a novel mutation and review of the literature. Pediatrics. 2005 Sep;116(3):757-66. doi: 10.1542/peds.2004-1897.
- Touati G, Rusthoven E, Depondt E, Dorche C, Duran M, Heron B, Rabier D, Russo M, Saudubray JM. Dietary therapy in two patients with a mild form of sulphite oxidase deficiency. Evidence for clinical and biological improvement. J Inherit Metab Dis. 2000 Feb;23(1):45-53. doi: 10.1023/a:1005646813492.
- Zaki MS, Selim L, El-Bassyouni HT, Issa MY, Mahmoud I, Ismail S, Girgis M, Sadek AA, Gleeson JG, Abdel Hamid MS. Molybdenum cofactor and isolated sulphite oxidase deficiencies: Clinical and molecular spectrum among Egyptian patients. Eur J Paediatr Neurol. 2016 Sep;20(5):714-22. doi: 10.1016/j.ejpn.2016.05.011. Epub 2016 May 30.
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