I. Nelissen et al., PECAM1, MPO and PRKAR1A at chromosome 17q21-q24 and susceptibility for multiple sclerosis in Sweden and Sardinia, J NEUROIMM, 108(1-2), 2000, pp. 153-159
Using genome screen, DNA sequence and mapping data, we scanned the human ch
romosomal region 17q21-q24 for polymorphic markers in single copy genes. Th
ree such genes were identified: the gene for myeloperoxidase (MPO) at 17q21
.3-q23.2, containing a CA-microsatellite in the eighth intron and a functio
nal single base substitution (G to A) in the promoter region, the platelet
endothelial eel adhesion molecule-1 gene (PECAM1) at 17q23, which has a CA-
repeat sequence in the sixth intron, and the gene for the regulatory subuni
t Riot of cAMP-dependent protein kinase (PRKAR1A) at 17q23-q24, in which a
GA:microsatellite was detected in the 5'-flanking region. Association of th
ese polymorphisms with multiple sclerosis (MS) was studied in a Swedish cas
e-control population of 199 MS patients and 145 control subjects, and in 20
3 simplex families from Sardinia. None of these polymorphic genes was found
to be a genetic marker for disease susceptibility. These results are in co
ntrast with previous studies on the involvement of MPO in MS and suggest th
at the elevated expression of PECAM-1 in MS, as earlier documented, is rela
ted to transactivation by other gene products. (C) 2000 Elsevier Science B.
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