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Receptors and steroid-dependent hypertension
J P Coghlan1, A F Reid, C D Spence
1Howard Florey Institute of Experimental Physiology and Medicine, Parkville, Victoria, Australia.
Clinical and Experimental Pharmacology & Physiology
|March 1, 1988
Summary
Adrenocorticotropic hormone (ACTH) administration induces hypertension, requiring specific steroid precursors. The exact mechanisms and receptor locations for this steroid-induced hypertension remain unclear.
Area of Science:
- Endocrinology
- Cardiovascular Physiology
- Steroid Biochemistry
Background:
- Adrenocorticotropic hormone (ACTH) administration is known to cause hypertension.
- The specific steroid precursors and mechanisms underlying ACTH-induced hypertension are not fully understood.
Purpose of the Study:
- To investigate the role of specific steroids in ACTH-induced hypertension.
- To differentiate the hypertensinogenic activity of corticosteroids from their known glucocorticoid and mineralocorticoid effects.
Main Methods:
- Observations of hypertension development following ACTH administration.
- Analysis of steroid presence and association during hypertensive responses.
Main Results:
- Hypertension development necessitates the presence of 17 alpha-hydroxyprogesterone and 17 alpha,20 alpha-dihydroxy-4-pregnene-3-one alongside other steroids.
- The hypertensinogenic activity of corticosteroids is separable from their glucocorticoid and mineralocorticoid functions.
Conclusions:
- Specific steroid profiles are critical for ACTH-induced hypertension.
- Further research is needed to elucidate the physiological mechanisms and receptor sites mediating steroid-induced hypertension and its relevance to human essential hypertension.