Link Between Zinc Deficiency and Hypertension Discovered

by Colleen Fleiss on  January 25, 2019 at 3:01 AM Hypertension News
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In a mouse study, association between zinc deficiency, blood pressure and kidney sodium transporter was identified. The study is published ahead of print in the American Journal of Physiology--Renal Physiology.
Link Between Zinc Deficiency and Hypertension Discovered
Link Between Zinc Deficiency and Hypertension Discovered

Zinc deficiency is common in people with chronic illnesses such as type 2 diabetes and chronic kidney disease. People with low zinc levels are also at a higher risk for hypertension. The way in which the kidneys either excrete sodium into the urine or reabsorb it into the body--specifically through a pathway called the sodium chloride cotransporter (NCC)--also plays a role in blood pressure control.

Less sodium in the urine typically corresponds with higher blood pressure. Recent research has suggested that zinc may help regulate proteins that in turn regulate the NCC, but a direct link between zinc-deficiency-induced hypertension has not been examined.

Researchers compared male mice with zinc deficiency to healthy controls with normal zinc levels. The zinc-deficient mice developed high blood pressure and a corresponding decrease in urinary sodium excretion. The control group did not experience the same changes. A small group of the zinc-deficient mice were fed a zinc-rich diet partway through the study.

Once the animals' zinc reached adequate levels, blood pressure began to drop and urinary sodium levels increased. "These significant findings demonstrate that enhanced renal [sodium] reabsorption plays a critical role in [zinc-deficiency]-induced hypertension," the research team wrote.

Source: Eurekalert

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