Words similar to sitosterolemic
Example sentences for: sitosterolemic
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However, a literature search revealed that a few strains of rats, studied primarily for investigation of hypertension and stroke, have been reported to be sitosterolemic as well [ 15 16 ] . We hypothesised that these rat strains may be mutated in either Abcg5 or Abcg8 . Tissue (and plasma) plant sterol levels in the Wistar Kyoto (WKY) rat, the spontaneously hypertensive rat (SHR) and the stroke-prone spontaneously hypertensive rat (SHRSP) were significantly higher than in Wistar and WKA rats fed either a regular chow diet or diets that have higher plant sterols and these were correlated with increased death, or red cell hemolysis etc. [ 15 16 17 18 19 20 21 22 ] . Dietary sterol absorption rates were increased, with a decrease in sterol excretion [ 16 ] , characteristics similar to that observed in sitosterolemic patients.
In sitosterolemic patients, the absorption of phytosterols in intestine is dramatically increased, with absorption of plant sterols to about the same extent (~60%) as cholesterol.
We sequenced the STSL loci in sitosterolemic and control rat strains and identified a number of nucleotide changes.
Recent linkage mapping studies mapped hypertension QTLs to a number of chromosomal regions in SHR and SHRSP rats [ 35 ] . Our FISH study assigned the STSL locus rat chromosome 6q12, a region where a cluster of blood pressure QTL with Lod score 4~6 has been reported to be present (M6MIT12-M6MIT3, 39 cM distance) in a New Zealand genetically hypertensive rat (GH rat) [ 35 ] . With respect to hypertension, although the SHR and SHRSP strains carry the Gly583Cys mutation, in extensive QTL mapping studies using these strains, no loci mapping to the rat STSL region have been reported [ 35 ] . In our study, the GH rat is neither sitosterolemic, nor has any nucleotide alteration at the STSL locus that would implicate this region as mutated.
All of these strains are homozygous mutant for Gly583Cys in sterolin-1, encoded by Abcg5 . This mutation is not present in rats that were not sitosterolemic, even though one of these was hypertensive (the GH rat).
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