Abstract:
BACKGROUND:Children with cyclic vomiting syndrome (CVS) have a high degree of maternal inheritance of functional gastrointestinal and neurological disorders. CVS in children is also associated with an increased prevalence of mitochondrial DNA single-nucleotide polymorphisms (mtDNA SNPs) 16519 T and 3010A. Preliminary data suggests that age of onset of symptoms (pediatric vs. adult) may be a determinant of the presence of such mtDNA SNP's. We sought to examine the degree of maternal inheritance pattern of functional disorders and the prevalence of mtDNA SNP's16519T and 3010A in adults with CVS and correlate this with age of onset of disease. METHODS:A Quantitative Pedigree Analysis (QPA) was performed in 195 of a total of 216 patients and all were genotyped using Restriction Fragment Length Polymorphism (RFLP) or sequencing. RESULTS:Adults with CVS had a higher degree of probable maternal inheritance (PMI) of functional disorders than controls (12% vs. 1%, p < 0.001). However, the prevalence of mitochondrial SNP's 16519 T, 3010A and the AT genotype were similar in Haplogroup H CVS patients compared to historical controls. There was no correlation between age of onset of disease and prevalence of these mtDNA SNP's. CONCLUSIONS:A subset of adults with CVS has a significantly higher degree of maternal inheritance pattern of functional disorders than controls. There was no association with mtDNA SNP's 16519 T and 3010A as seen in children and future studies sequencing the entire mitochondrial and nuclear genome to identify potential causes for this maternal inheritance pattern in adults are warranted.
journal_name
BMC Gastroenteroljournal_title
BMC gastroenterologyauthors
Venkatesan T,Zaki EA,Kumar N,Sengupta J,Ali M,Malik B,Szabo A,van Tilburg MA,Boles RGdoi
10.1186/1471-230X-14-181subject
Has Abstractpub_date
2014-10-21 00:00:00pages
181issn
1471-230Xpii
1471-230X-14-181journal_volume
14pub_type
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