Sequential changes in urinary catecholamine in the transition from benign to malignant hypertension in rats.
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The sequential changes in 24-hour urinary norepinephrine (NE) and epinephrine (E) excretion levels were measured in spontaneously hypertensive rats (SHR) that received deoxycorticosterone acetate (DOCA) and 1% NaCl drinking water. These were compared with those from control SHR and similarly treated Wistar-Kyoto rats (WKY). Blood pressure, NE and E increased progressively in DOCA-SHR group, and NE (2392 ± 94 vs. 998 ± 49 ng/day) and E (250 ± 21 vs. 116 ± 6 ng/day) exceeded twice that of the control SHR group in the sixth week of DOCA treatment. In WKY rats, NE (1372 ± 48 vs. 968 ± 37 ng/day) and E (147 ± 9 vs. 121 ± 7 ng/day) levels were significantly higher in rats given DOCA than those in control group in the sixth week of the treatment, but were not so remarkably high as in DOCA-SHR group. A histological examination of DOCA-SHR kidneys revealed fibrinoid necrosis in the vascular walls. These data suggest that sympathoadrenal activity plays an important role in the development of malignant hypertension in DOCA-SHR group.
- 社団法人 日本循環器学会の論文
社団法人 日本循環器学会 | 論文
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