Journal article
Orotic acid improves left ventricular recovery four days after heterotopic transplantation
The Annals of thoracic surgery, v 58(2), pp 409-415
Aug 1994
PMID: 8067840
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Orotic acid accelerates compensatory myocardial hypertrophy after regional ischemia and improves left ventricular function acutely after global ischemia. In this study, the effect of orotic acid on left ventricular function was investigated 4 days after global ischemia (75 minutes, 21 °C) using heterotopically transplanted rabbit hearts (n = 18). Experimental animals received daily 100-mg/kg doses of intraperitoneally administered orotic acid, starting 1 day before transplantation, and showed a threefold increase in the serum level of orotic acid by 4 days. After 1 hour of reperfusion, the developed pressure was equally depressed in both the control and experimental groups; however, 4 days later, the developed pressure in control animals was decreased by 3 ± 3 mm Hg (versus the developed pressure measured at 1 hour) while the developed pressure in experimental animals was significantly increased by 25 ± 8 mm Hg. Heterotopically transplanted hearts manifested diminished systolic function (stemming from ischemia and unloading) as well as decreased expression of adult myosin. Because orotic acid has been observed to produce an increase in protein synthesis in other models, we investigated whether this improvement in systolic function resulted from an orotic acid-mediated augmentation (or preservation) of normal adult myosin expression. Both orotic acid-treated and untreated hearts manifested decreased expression of the β-myosin heavy chain protein and steady-state messenger RNA levels. Because function improved with decreased β-myosin heavy chain expression, an alternate mechanism underlying orotic acid-mediated improvement in function is implicated. Nevertheless, orotic acid may be a therapeutic agent facilitating long-term recovery from global ischemia.
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Details
- Title
- Orotic acid improves left ventricular recovery four days after heterotopic transplantation
- Creators
- Thomas Yeh - Virginia Commonwealth University Medical CenterIvan M. Rebeyka - Virginia Commonwealth University Medical CenterEmma R. Jakoi - Virginia Commonwealth University Medical CenterDanna E. Johnson - Virginia Commonwealth University Medical CenterRebecca J. Dignan - Virginia Commonwealth University Medical CenterCornelius M. Dyke - Virginia Commonwealth University Medical CenterAndrew S. Wechsler - Virginia Commonwealth University Medical Center
- Publication Details
- The Annals of thoracic surgery, v 58(2), pp 409-415
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- [Retired Faculty]
- Web of Science ID
- WOS:A1994PD58900024
- Scopus ID
- 2-s2.0-0027965362
- Other Identifier
- 991020705356904721
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InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Cardiac & Cardiovascular Systems
- Respiratory System
- Surgery