期刊
CURRENT OPINION IN NEPHROLOGY AND HYPERTENSION
卷 22, 期 1, 页码 65-76出版社
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/MNH.0b013e32835b3693
关键词
renal proximal tubule cell; salt sensitivity; urine exosomes
资金
- National Institutes of Health [HL068686, HL023081, HL074940, HL092196, DK039308, DK090918]
Purpose of review One-third of the world's population has hypertension and it is responsible for almost 50% of deaths from stroke or coronary heart disease. These statistics do not distinguish salt-sensitive from salt-resistant hypertension or include normotensives who are salt-sensitive even though salt sensitivity, independent of blood pressure, is a risk factor for cardiovascular and other diseases, including cancer. This review describes new personalized diagnostic tools for salt sensitivity. Recent findings The relationship between salt intake and cardiovascular risk is not linear, but rather fits a J-shaped curve relationship. Thus, a low-salt diet may not be beneficial to everyone and may paradoxically increase blood pressure in some individuals. Current surrogate markers of salt sensitivity are not adequately sensitive or specific. Tests in the urine that could be surrogate markers of salt sensitivity with a quick turn-around time include renal proximal tubule cells, exosomes, and microRNA shed in the urine. Summary Accurate testing of salt sensitivity is not only laborious but also expensive, and with low patient compliance. Patients who have normal blood pressure but are salt-sensitive cannot be diagnosed in an office setting and there are no laboratory tests for salt sensitivity. Urinary surrogate markers for salt sensitivity are being developed.
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