To detect the variety of neuropeptide Y, endothelin (ET) and nitric oxide (NO) in plasm of SLE patients and discuss the clinical significance.

探讨系统性红斑狼疮（SLE）患者血浆中神经肽Y、内皮素及一氧化氮水平的变化及其意义。

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Objective: To investigate the relationship between the changes of plasm endothelin (et) and nitric oxide (NO) and blood pressure in patients with essential hypertension (EH).

目的：探讨原发性高血压(EH)患者血内皮素(et)、一氧化氮(NO)的变化及与血压的关系。

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