1. Thyroid hormone restores atrial stretch-induced secretion of atrial natriuretic peptide in hypophysectomized rats
- Author
-
Zamir N, Ohman Kp, and Slover M
- Subjects
Male ,medicine.medical_specialty ,Pituitary gland ,Endocrinology, Diabetes and Metabolism ,Clinical Biochemistry ,Blood volume ,Blood Pressure ,Biochemistry ,Atrial stretch ,Rats, Sprague-Dawley ,Endocrinology ,Atrial natriuretic peptide ,Heart Rate ,Internal medicine ,Medicine ,Animals ,Secretion ,Heart Atria ,Hypophysectomy ,Blood Volume ,Atrium (architecture) ,business.industry ,Biochemistry (medical) ,Thyroid ,General Medicine ,Atrial Function ,Rats ,Thyroxine ,medicine.anatomical_structure ,Pituitary Gland ,cardiovascular system ,business ,hormones, hormone substitutes, and hormone antagonists ,Atrial Natriuretic Factor ,circulatory and respiratory physiology ,Hormone - Abstract
Acute blood volume expansion caused a rapid and profound release of atrial natriuretic peptides (ANP) from cardiac atria. The stimulated release of ANP was markedly blunted (more than 50%) in hypophysectomized rats (8 days after surgery). Daily subcutaneous injections of thyroxine (30 micrograms/kg) to hypophysectomized rats for 7 days, completely restored acute volume expansion induced release of ANP. Our data suggest that thyroid hormone is required for ANP secretion in response to acute volume expansion.
- Published
- 1993