Antagonizing effects of novel multipeptid analogues on endothelin receptors and their pharmacological characteristics in cardiovascular system / 药学学报
Acta Pharmaceutica Sinica
;
(12): 593-597, 2002.
Article
in Chinese
| WPRIM
| ID: wpr-312074
ABSTRACT
<p><b>AIM</b>To investigate the antagonistic effects of the novel compounds on vasoconstriction induced by ET-1 and the effect on the blood pressure of stroke-prone spontaneously hypertensive rats.</p><p><b>METHODS</b>Organ bath experiment and whole cardiac function experiment were used.</p><p><b>RESULTS</b>The analogues of o-CPhe-D-Trp-D-Phe(-X)-OH showed good ability against endothelin biological effects. When X was displaced by 3-F, 3-Cl or 4-Cl, the novel compounds inhibit the vascular constriction induced by ET-1 in a concentration-dependent manner, the IC50 +/- L95 were (0.09 +/- 0.05), (0.15 +/- 0.06) or (0.11 +/- 0.03) mumol.L-1 respectively. The blood pressure of stroke-prone spontaneously hypertensive rats was decreased. No significant effect on cardiac function of rats was discovered.</p><p><b>CONCLUSION</b>The results demonstrate that among the six kinds of compounds, those with o-CPhe-D-Trp-D-Phe (-X)-OH configuration showed good biological effects.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Aorta
/
Peptides
/
Pharmacology
/
Rats, Inbred SHR
/
Structure-Activity Relationship
/
Vasoconstriction
/
Blood Pressure
/
Molecular Structure
/
Chemistry
/
Endothelins
Limits:
Animals
Language:
Chinese
Journal:
Acta Pharmaceutica Sinica
Year:
2002
Type:
Article
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