Increased Cerebrospinal Fluid Norepinephrine in Essential Hypertension

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Abstract
Studies in man and animals suggest increased central noradrenergic activity in hypertension. We can now measure norepinephrine (NE) in cerebrospinal fluid (CSF) accurately and this should provide an index of central noradrenergic activity. NE in CSF is very labile and altered by anxiety, stress, drugs, sodium balance and other factors. When these factors are controlled, NE in CSF appears elevated in essential hypertensives, particularly among young patients. Neurologic diseases that alter NE in CSF cause parallel alterations in blood pressure. Increased central noradrenergic activity is reflected in CSF NE levels and may cause some forms of hypertension.