Clinical heterogeneity of PLA2G6-related Parkinsonism: Analysis of two Saudi families

被引:20
作者
Bohlega S.A. [1 ]
Al-Mubarak B.R. [2 ,3 ]
Alyemni E.A. [2 ,3 ]
Abouelhoda M. [4 ]
Monies D. [3 ,4 ]
Mustafa A.E. [4 ]
Khalil D.S. [2 ,3 ]
Al Haibi S. [3 ,4 ]
Abou Al-Shaar H. [1 ]
Faquih T. [4 ]
El-Kalioby M. [4 ]
Tahir A.I. [2 ,3 ]
Al Tassan N.A. [2 ,3 ,4 ]
机构
[1] Department of Neurosciences, King Faisal Specialist Hospital and Research Center, P.O Box 3354, Riyadh
[2] Behavioral Genetics Unit, Department of Genetics, King Faisal Specialist Hospital and Research Center, P.O Box 3354, Riyadh
[3] Department of Genetics, King Faisal Specialist Hospital and Research Center, P.O Box 3354, Riyadh
[4] Saudi Human Genome Project, King Abdulaziz City for Science and Technology, Riyadh
关键词
Parkinsonism; PLA2G6; Saudi patients;
D O I
10.1186/s13104-016-2102-7
中图分类号
学科分类号
摘要
Background: Recessive mutations in PLA2G6 have been associated with different neurodegenerative disorders, including infantile neuroaxonal dystrophy, neurodegeneration with brain iron accumulation and more recently, early-onset dystonia parkinsonism. Method: Targeted-next generation sequencing using a custom Neurology panel, containing 758 OMIM-listed genes implicated in neurological disorders, was carried out in two index cases from two different Saudi families displaying early-onset levodopa-responsive Parkinsonism with pyramidal signs and additional clinical features. The detected mutations were verified in the index cases and available family members by direct sequencing. Results and conclusion: We identified a previously described PLA2G6 homozygous p.R741Q mutation in three affected and two asymptomatic individuals from two Saudi families. Our finding reinforces the notion of the broadness of the clinical spectrum of PLA2G6-related neurodegeneration. © 2016 The Author(s).
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共 14 条
[1]  
Hwang O., Role of oxidative stress in Parkinson's disease, Experimental Neurobiology, 22, 1, pp. 11-17, (2013)
[2]  
Adibhatla R.M., Hatcher J.F., Phospholipase A(2), reactive oxygen species, and lipid peroxidation in CNS pathologies, BMB Reports, 41, 8, pp. 560-567, (2008)
[3]  
Lu C.S., Lai S.C., Wu R.M., Weng Y.H., Huang C.L., Chen R.S., Chang H.C., Wu-Chou Y.H., Yeh T.H., PLA2G6 mutations in PARK14-linked young-onset parkinsonism and sporadic Parkinson's disease, Am J Med Genet B, Neuropsychiatr Genet, 159, 2, pp. 183-191, (2012)
[4]  
Paisan-Ruiz C., Li A., Schneider S.A., Holton J.L., Johnson R., Kidd D., Chataway J., Bhatia K.P., Lees A.J., Hardy J., Et al., Widespread Lewy body and tau accumulation in childhood and adult onset dystonia-parkinsonism cases with PLA2G6 mutations, Neurobiol Aging, 33, 4, pp. 814-823, (2012)
[5]  
Al-Mubarak B.R., Bohlega S.A., Alkhairallah T.S., Magrashi A.I., AlTurki M.I., Khalil D.S., AlAbdulaziz B.S., Abou Al-Shaar H., Mustafa A.E., Alyemni E.A., Et al., Parkinson's Disease in Saudi Patients: A Genetic Study, PLoS ONE, 10, 8, (2015)
[6]  
Comprehensive gene panels provide advantages over clinical exome sequencing for Mendelian diseases, Genome Biol, 16, (2015)
[7]  
Morgan N.V., Westaway S.K., Morton J.E., Gregory A., Gissen P., Sonek S., Cangul H., Coryell J., Canham N., Nardocci N., Et al., PLA2G6, encoding a phospholipase A2, is mutated in neurodegenerative disorders with high brain iron, Nat Genet, 38, 7, pp. 752-754, (2006)
[8]  
Paisan-Ruiz C., Bhatia K.P., Li A., Hernandez D., Davis M., Wood N.W., Hardy J., Houlden H., Singleton A., Schneider S.A., Characterization of PLA2G6 as a locus for dystonia-parkinsonism, Ann Neurol, 65, 1, pp. 19-23, (2009)
[9]  
Shi C.H., Tang B.S., Wang L., Lv Z.Y., Wang J., Luo L.Z., Shen L., Jiang H., Yan X.X., Pan Q., Et al., PLA2G6 gene mutation in autosomal recessive early-onset parkinsonism in a Chinese cohort, Neurology, 77, 1, pp. 75-81, (2011)
[10]  
Zlotogora J., Penetrance and expressivity in the molecular age, Genet Med, 5, 5, pp. 347-352, (2003)