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Zellweger syndrome is a rare congenital disorder characterized by the reduction or absence of functional peroxisomes in the cells of an individual. [1] It is one of a family of disorders called Zellweger spectrum disorders which are leukodystrophies .
Zellweger spectrum disorders are a group of rare disorders that create the same disease process. [1] The subdivisions of this spectrum are hyperpipecolic acidemia , infantile Refsum disease , neonatal adrenoleukodystrophy , and Zellweger syndrome .
[4] [5] PBD-ZSD represents a continuum of disorders including infantile Refsum disease, neonatal adrenoleukodystrophy, and Zellweger syndrome. Collectively, PBDs are autosomal recessive developmental brain disorders that also result in skeletal and craniofacial dysmorphism, liver dysfunction, progressive sensorineural hearing loss, and ...
There is some evidence from humans and animals that there are reduced levels of plasmalogens in the brain in neurodegenerative disorders including Alzheimer disease, Parkinson's disease, Niemann–Pick disease, type C, Down syndrome, and multiple sclerosis, it is not clear if this is causal or correlative. [20]
This is a list of major and frequently observed neurological disorders (e.g., Alzheimer's disease), symptoms (e.g., back pain), signs (e.g., aphasia) and syndromes (e.g., Aicardi syndrome). There is disagreement over the definitions and criteria used to delineate various disorders and whether some of these conditions should be classified as ...
The following is a list of genetic disorders and if known, type of mutation and for the chromosome involved. Although the parlance "disease-causing gene" is common, it is the occurrence of an abnormality in the parents that causes the impairment to develop within the child.
Inborn errors of metabolism form a large class of genetic diseases involving congenital disorders of enzyme activities. [1] The majority are due to defects of single genes that code for enzymes that facilitate conversion of various substances into others ().
For this reason peroxisomes are ubiquitous in the liver and kidney. D-BP deficiency is the most severe peroxisomal disorder, [1] often resembling Zellweger syndrome. [2] Characteristics of the disorder include neonatal hypotonia and seizures, occurring mostly within the first month of life, as well as visual and hearing impairment. [3]