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Pathway Description
Joubert Syndrome
Homo sapiens
Disease Pathway
Joubert syndrome is a condition in which brain development is not completed as it should be, including the lack or underdevelopment of the part of the brain that regulates balance and coordination and an abnormal brain stem. The symptoms affect a variety of body parts in the patient, including apnea, ataxia brought on by hypotonia, abnormal eye movements and intellectual disability. Many different gene mutations are responsible for Joubert syndrome, all of the proteins created from these genes affecting the cilia that are found on the cell surface. It can be confirmed through its hallmark molar tooth imprint that shows up on brain scans of the patient, a visualization of the malformed brain stem and cerebellar vermis.
References
Joubert Syndrome References
Saraiva JM, Baraitser M: Joubert syndrome: a review. Am J Med Genet. 1992 Jul 1;43(4):726-31. doi: 10.1002/ajmg.1320430415.
Pubmed: 1341417
Abel K, Anderson RA, Shears SB: Phosphatidylinositol and inositol phosphate metabolism. J Cell Sci. 2001 Jun;114(Pt 12):2207-8. doi: 10.1242/jcs.114.12.2207.
Pubmed: 11493657
Anderson RA, Boronenkov IV, Doughman SD, Kunz J, Loijens JC: Phosphatidylinositol phosphate kinases, a multifaceted family of signaling enzymes. J Biol Chem. 1999 Apr 9;274(15):9907-10. doi: 10.1074/jbc.274.15.9907.
Pubmed: 10187762
De Matteis MA, Di Campli A, Godi A: The role of the phosphoinositides at the Golgi complex. Biochim Biophys Acta. 2005 Jul 10;1744(3):396-405. doi: 10.1016/j.bbamcr.2005.04.013.
Pubmed: 15979509
Kanaho Y, Suzuki T: Phosphoinositide kinases as enzymes that produce versatile signaling lipids, phosphoinositides. J Biochem. 2002 Apr;131(4):503-9. doi: 10.1093/oxfordjournals.jbchem.a003127.
Pubmed: 11926986
Poccia D, Larijani B: Phosphatidylinositol metabolism and membrane fusion. Biochem J. 2009 Mar 1;418(2):233-46. doi: 10.1042/BJ20082105.
Pubmed: 19196244
Sasaki T, Takasuga S, Sasaki J, Kofuji S, Eguchi S, Yamazaki M, Suzuki A: Mammalian phosphoinositide kinases and phosphatases. Prog Lipid Res. 2009 Nov;48(6):307-43. doi: 10.1016/j.plipres.2009.06.001. Epub 2009 Jul 4.
Pubmed: 19580826
Vanhaesebroeck B, Leevers SJ, Ahmadi K, Timms J, Katso R, Driscoll PC, Woscholski R, Parker PJ, Waterfield MD: Synthesis and function of 3-phosphorylated inositol lipids. Annu Rev Biochem. 2001;70:535-602. doi: 10.1146/annurev.biochem.70.1.535.
Pubmed: 11395417
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