Multiple blood pressure QTL on rat Chromosome 2 defined by congenic Dahl rats
- First Online:
- Cite this article as:
- Garrett, M.R. & Rapp, J.P. Mammalian Genome (2002) 13: 41. doi:10.1007/s00335-001-2114-y
- 39 Views
Linkage analysis previously demonstrated a blood pressure quantitative trait locus (QTL) on rat Chromosome 2 (Chr 2) in crosses utilizing Dahl salt-sensitive (S) rats. The present work dissects this QTL by using congenic strains in which segments of Chr 2 from Wistar Kyoto rats (WKY) are placed on the S genetic background. Two distinct QTLs were found where one QTL was anticipated. These each accounted for a blood pressure of 15–20 mm Hg in rats fed 2% NaCl diet for 24 days. One QTL was in the <9-cM interval between D2Rat35 and D2Wox18 (Fgg), and the other was in the <7-cM interval between D2Wox18 (Fgg) and D2Mgh10. A third tentative QTL was suggested, but not clearly established, in the <3-cM interval between D2Mgh10 and D2Rat259.