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MB Sample ID: SA035327

Local Sample ID:ms5841-2
Subject ID:SU000653
Subject Type:Human
Subject Species:Homo sapiens
Taxonomy ID:9606
Species Group:Human

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Treatment ID:TR000667
Treatment Summary:We will analyze urine specimens collected during the Dietary Approaches to Stop Hypertension – Sodium Study (DASH-Sodium or DASH2) clinical trial. More than 400 participants in the study were divided into two groups. One followed a common Western diet, while the other group followed the “healthier” DASH diet. Then each group had three 30 day periods, in random orders, that corresponded to high, intermediate, or low sodium intakes while eating their designated diet. The participants had all of their meals prepared and provided for them during the entire study. It was found that reducing sodium intake significantly reduced blood pressure especially when on the common Western diet. We have obtained urine samples and phenotypic data for a subset of the participants of the DASH2 trial form the NHLBI biospecimen and data repository BioLINCC. We selected two sub-groups of participants on the Western diet. Group A (n=31) exhibited large (>12 mmHg) differences in systolic or diastolic pressure between low- and high-sodium intakes (“salt-sensitive” group). Group B (n=29) showed similar blood pressure (differences <5 mmHg for both systolic and diastolic pressures) between low- and high-sodium intakes (“saltinsensitive” group).