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Filename: drivers/Session_files_driver.php
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Function: _error_handler
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Filename: controllers/Detail.php
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Filename: controllers/Detail.php
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Function: _error_handler
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Filename: controllers/Detail.php
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Filename: controllers/Detail.php
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Filename: controllers/Detail.php
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Filename: controllers/Detail.php
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Filename: controllers/Detail.php
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Filename: controllers/Detail.php
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Function: _error_handler
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Filename: controllers/Detail.php
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Filename: controllers/Detail.php
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Filename: controllers/Detail.php
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Message: file_get_contents(https://...@gmail.com&api_key=61f08fa0b96a73de8c900d749fcb997acc09): Failed to open stream: HTTP request failed! HTTP/1.1 429 Too Many Requests
Filename: helpers/my_audit_helper.php
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Background: The term Pontocerebellar hypoplasias collectively refers to a group of rare, heterogeneous and progressive disorders, which are frequently inherited in an autosomal recessive manner and usually have a prenatal onset. Mutations in the SEPSECS gene, leading to deficiency in selenoprotein biosynthesis, have been identified in recent times as the molecular etiology of different pre/perinatal onset neurological phenotypes, including cerebello-cerebral atrophy, Pontocerebellar hypoplasia type 2D and progressive encephalopathy with elevated lactate. These disorders share a similar spectrum of central (e.g., brain neurodegeneration with grey and white matter both involved) and peripheral (e.g., spasticity due to axonal neuropathy) nervous system impairment.
Case Presentation: We hereby describe a 9-year-old boy with (i) a typical Pontocerebellar hypoplasia type 2D phenotype (e.g. profound mental retardation, spastic quadriplegia, ponto-cerebellar hypoplasia and progressive cerebral atrophy); (ii) optic nerve atrophy and (iii) mild secondary mitochondrial myopathy detected by muscle biopsy and respiratory chain enzyme analysis. We performed whole exome sequencing which identified a homozygous mutation of the SEPSECS gene (c.1001T > C), confirming the clinical suspect of Pontocerebellar hypoplasia type 2D.
Conclusion: This report further corroborates the notion of a potential secondary mitochondrial dysfunction in the context of selenoprotein biosynthesis deficiency and also adds optic nerve atrophy as a new potential clinical feature within the SEPSECS-associated clinical spectrum. These findings suggest the presence of a possible shared genetic etiology among similar clinical entities characterized by the combination of progressive cerebello-cerebral and optic nerve atrophy and also stress the biological importance of selenoproteins in the regulation of neuronal and metabolic homeostasis.
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http://dx.doi.org/10.1016/j.ejpn.2015.12.016 | DOI Listing |
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