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夜间尿排泄量比白天少,这可能是由于夜间抗利尿激素(垂体后叶加压素)分泌增多之故。作者利用放射免疫法测定8名正常男人血浆精氨酸加压素(PAV)在一昼夜间的含量,其中2例于3周后在服地塞米松1毫克/6小时的情况下再测一昼夜。8人共计10个昼夜。结果发现夜间血中PAV含量增加,其中5例次呈进行性增加,另3例次在夜间24时或清晨4时达最高值,然后下降。10昼夜中白天血PAV平均浓度0.84微微克/毫升,和夜间最高
Urinary excretion at night less than during the day, which may be due to the night of antidiuretic hormone (pituitary vasopressin) increased secretion of it. The authors used radioimmunoassay to determine plasma arginine vasopressin (PAV) levels over a single day in both normal and postmenopausal women. Two of these patients were re-tested for one night and four days after taking dexamethasone at 1 mg / 6 hours after 3 weeks. 8 for a total of 10 days and nights. The results showed that nighttime blood PAV levels increased, of which 5 cases showed a progressive increase in the other three cases at night at 24 o’clock or 4 o’clock reached the highest value, and then decreased. 10 days and daytime blood PAV average concentration of 0.84 pg / ml, and the highest night