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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 .
Peroxisome biogenesis disorders (PBDs) include the Zellweger syndrome spectrum (PBD-ZSD) and rhizomelic chondrodysplasia punctata type 1 (RCDP1). [4] [5] PBD-ZSD represents a continuum of disorders including infantile Refsum disease, neonatal adrenoleukodystrophy, and Zellweger syndrome.
Zellweger spectrum disorders are a group of autosomal recessive genetic disorders. They are caused due to pathogenic mutations in at least 13 different PEX genes that encode peroxins. [5] It affects the peroxisomes, which are organelles in the body that are meant to breakdown items like acids and toxic compounds. Both parents will have to have ...
Peroxisomes contain many different enzymes, such as catalase, and their main function is to neutralize free radicals and detoxify drugs. 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]
Infantile Refsum disease (IRD) is a rare autosomal recessive [2] congenital peroxisomal biogenesis disorder within the Zellweger spectrum.These are disorders of the peroxisomes that are clinically similar to Zellweger syndrome and associated with mutations in the PEX family of genes.
Peroxisome biogenesis factor 1, also known as PEX1, is a protein which in humans is encoded by the PEX1 gene. [5] ... and Zellweger syndrome. ...
Peroxisome assembly factor 2 is a protein that in humans is encoded by the PEX6 gene. [5] [6] ... [13] such as Zellweger Syndrome spectrum, infantile Refsum disease, ...
An inactivating nonsense mutation localized to this gene was observed in a patient with Zellweger syndrome of the complementation group CGD/CG9. Expression of this gene product morphologically and biochemically restores the formation of new peroxisomes, suggesting a role in peroxisome organization and biogenesis.