Abstract
To investigate alterations in aldosterone secretion in diabetes mellitus, the effects of angiotensin II, ACTH, and potassium on aldosterone secretion were examined in conscious unrestrained streptozotocin-induced diabetic rats (60 mg/kg, 12 weeks before study). In chronic experimental diabetic rats where PRA, plasma aldosterone concentration, and urinary excretion of prostaglandin E2 were significantly decreased, a significant attenuated response of aldosterone secretion was demonstrated after infusion of angiotensin II, ACTH, or potassium. Yet the plasma fluorogenic corticosteroids response to ACTH in diabetic rats was not significantly different from that in control rats. After acute potassium infusion (0.30 meq/kg·min), plasma potassium levels in diabetic rats were significantly higher than in control rats, although immunoreactive insulin levels remained unchanged compared to the significant elevation in control rats. These results suggest that defects in aldosterone synthesis exist in chronic experimental diabetic rats and that potassium homeostasis is impaired during acute potassium loading. This change in potassium homeostasis may be related to both insulin and aldosterone deficiencies.
| Original language | English |
|---|---|
| Pages (from-to) | 2205-2209 |
| Number of pages | 5 |
| Journal | Endocrinology |
| Volume | 115 |
| Issue number | 6 |
| Publication status | Published - 1984 |
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ASJC Scopus subject areas
- Endocrinology
- Endocrinology, Diabetes and Metabolism
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Aldosterone responses to angiotensin II, adrenocorticotropin, and potassium in chronic experimental diabetes mellitus in rats. / Hayashi, M.; Kitajima, W.; Saruta, T.
In: Endocrinology, Vol. 115, No. 6, 1984, p. 2205-2209.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Aldosterone responses to angiotensin II, adrenocorticotropin, and potassium in chronic experimental diabetes mellitus in rats
AU - Hayashi, M.
AU - Kitajima, W.
AU - Saruta, T.
PY - 1984
Y1 - 1984
N2 - To investigate alterations in aldosterone secretion in diabetes mellitus, the effects of angiotensin II, ACTH, and potassium on aldosterone secretion were examined in conscious unrestrained streptozotocin-induced diabetic rats (60 mg/kg, 12 weeks before study). In chronic experimental diabetic rats where PRA, plasma aldosterone concentration, and urinary excretion of prostaglandin E2 were significantly decreased, a significant attenuated response of aldosterone secretion was demonstrated after infusion of angiotensin II, ACTH, or potassium. Yet the plasma fluorogenic corticosteroids response to ACTH in diabetic rats was not significantly different from that in control rats. After acute potassium infusion (0.30 meq/kg·min), plasma potassium levels in diabetic rats were significantly higher than in control rats, although immunoreactive insulin levels remained unchanged compared to the significant elevation in control rats. These results suggest that defects in aldosterone synthesis exist in chronic experimental diabetic rats and that potassium homeostasis is impaired during acute potassium loading. This change in potassium homeostasis may be related to both insulin and aldosterone deficiencies.
AB - To investigate alterations in aldosterone secretion in diabetes mellitus, the effects of angiotensin II, ACTH, and potassium on aldosterone secretion were examined in conscious unrestrained streptozotocin-induced diabetic rats (60 mg/kg, 12 weeks before study). In chronic experimental diabetic rats where PRA, plasma aldosterone concentration, and urinary excretion of prostaglandin E2 were significantly decreased, a significant attenuated response of aldosterone secretion was demonstrated after infusion of angiotensin II, ACTH, or potassium. Yet the plasma fluorogenic corticosteroids response to ACTH in diabetic rats was not significantly different from that in control rats. After acute potassium infusion (0.30 meq/kg·min), plasma potassium levels in diabetic rats were significantly higher than in control rats, although immunoreactive insulin levels remained unchanged compared to the significant elevation in control rats. These results suggest that defects in aldosterone synthesis exist in chronic experimental diabetic rats and that potassium homeostasis is impaired during acute potassium loading. This change in potassium homeostasis may be related to both insulin and aldosterone deficiencies.
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M3 - Article
C2 - 6094152
AN - SCOPUS:0021681106
VL - 115
SP - 2205
EP - 2209
JO - Endocrinology
JF - Endocrinology
SN - 0013-7227
IS - 6
ER -