原発性アルドステロン症における各種ステロイドホルモンの動向

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To study the secretion of adrenocortical steroids, the renin releasing test and the angiotensin II analog (1-Sar, 8-Ala-Angiotensin II) infusion test was performed on four subjects with primary aldosteronism.<BR>The plasma renin activities of these subjects in the preoperative state were rather low, without any response to the renin releasing test. Plasma aldosterone was, however, significantly high and showed a tendency to declineits value when the subject was in an upright position.<BR>In the preoperative state, all the subjects lacked any alterations in plasma renin activity throughout the angiotensin II analog infusion test. Though slight elevations were observed in the blood pressure of three subjects, there was no demonstrable change in plasma aldosterone. In the other subject, though blood pressure did not change, plasma aldosterone exhibited a remarkable rise as did progesterone, 11-deoxycorticosterone and corticosterone. From these data, it was suggested that in the latter subject the aldosterone secretion was sensitive to angiotensin in comparison with ACTH.<BR>Three weeks after the operation, it was observed that plasma aldosterone response decreased, while the response of plasma renin activity to the renin releasing test was normal. This is considered to be due to the diminished sensitivity of the glomerulosa of the non-adenomatous adrenal gland to angiotensin.<BR>The levels of 17a-hydroxyprogesterone, 11-deoxycorticosterone and corticosterone were almost within the normal range in the pre-and postoperative state. The levels of plasma progesterone and 11-deoxycorticosterone, however, tended to be lower in the postoperative state compared with the preoperative state.
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原発性アルドステロン症における各種ステロイドホルモンの動向

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