| Comparative study of the effects of ouabain and digoxin on blood pressure of rats. | |
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MedLine Citation:
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PMID: 9772400 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: To compare the effect of ouabain on the blood pressure of rats with that of digoxin to find the evidences of the relationship between endogenous ouabain (EO) and development of hypertension. METHODS: Sprague-Dawley rats, which were divided into 3 groups, were infused with ouabain (23 x 75 micrograms.kg-1/day, i.p.), digoxin (36 x 84 micrograms.kg-1/day, i.p.) and normal saline (NS) once a day respectively. Systolic blood pressure and body weight were recorded weekly. Five weeks later, rats of ouabain group were randomly assigned to three infusion subgroups: Oc group, continued with ouabain infusion; Od group, added digoxin (73 x 68 micrograms.kg-1/day, i.p.) and Os group, stopped administration of ouabain. Another week later, direct blood pressure was recorded in aorta. Systolic and diastolic cardiac function, plasma renin activity and aldosterone levels of all the rats were measured. RESULTS: After a latent period of one week, blood pressure of Ouabain group increased significantly [95.4 +/- 11.8 mmHg (1 mmHg = 0.133 kPa) at the beginning of the experiment vs 122.5 +/- 16.9 mmHg at the end of week 6, P < 0.05] with normal plasma renin activity and higher aldosterone (1.28 +/- 0.45 ng/ml vs 0.69 +/- 0.27 ng/ml, P < 0.05). The blood pressure decreased after either withdrawal of ouabain or addition of digoxin (116.3 +/- 14.4 mmHg vs 100 +/- 10.7 mmHg, P < 0.05; 123.9 +/- 13.9 vs 103.3 +/- 10.5 mmHg, P < 0.05, respectively). No difference of blood pressure was found between the digoxin and NS group. CONCLUSIONS: Our results suggested that EO might be one of the causes of the development of hypertension. Aldosterone might play some role in the mechanism of ouabain-induced hypertension. Digoxin can not induce hypertension. There is a great difference between the effect of ouabain and digoxin on the blood pressure. Moreover, digoxin can reverse the hypertension induced by ouabain. |
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Authors:
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H Wang; Z Lu; W Yuan |
Publication Detail:
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Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Chinese medical journal Volume: 110 ISSN: 0366-6999 ISO Abbreviation: Chin. Med. J. Publication Date: 1997 Dec |
Date Detail:
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Created Date: 1998-10-20 Completed Date: 1998-10-20 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 7513795 Medline TA: Chin Med J (Engl) Country: CHINA |
Other Details:
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Languages: eng Pagination: 911-4 Citation Subset: IM |
Affiliation:
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Department of Cardiology, First Affiliated Hospital of Xi'an Medical University, China. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animals Blood Pressure / drug effects* Cardiotonic Agents / pharmacology* Digoxin / pharmacology* Disease Models, Animal Hypertension / etiology* Male Ouabain / pharmacology* Random Allocation Rats Rats, Sprague-Dawley |
| Chemical | |
Reg. No./Substance:
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0/Cardiotonic Agents; 20830-75-5/Digoxin; 630-60-4/Ouabain |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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