Abstract
Inotropic effects of isoprenaline, phenylephrine and calcium were studied in left atria of 5 weeks old rats fed a low (5%) or a normal (21%) protein diet for 3 weeks. Rats maintained on a low (5%) protein diet consume about half the amount of food eaten by the same rats maintained on a normal (21%) protein diet and thus suffer from protein-calorie malnutrition (PCM). Body weight did not increase in PCM, but heart weight adjusted to body weight was slightly increased compared to normal rats. Atrial resting tension and peak developed tension in response to isoprenaline, phenylephrine or calcium were not diminished by PCM. The number of alpha and beta-adrenoceptors and the receptor affinity in ventricular membranes were not reduced by PCM.
Full text
PDF




Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- BURTON K. A study of the conditions and mechanism of the diphenylamine reaction for the colorimetric estimation of deoxyribonucleic acid. Biochem J. 1956 Feb;62(2):315–323. doi: 10.1042/bj0620315. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Baker S. P., Boyd H. M., Potter L. T. Distribution and function of beta-adrenoceptors in different chambers of the canine heart. Br J Pharmacol. 1980 Jan;68(1):57–63. doi: 10.1111/j.1476-5381.1980.tb10698.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Benfey B. G., Yong M. S., Belleau B., Melchiorre C. Inhibition of the cardiac inotropic effect of phenylephrine by a tetramine disulfide with irreversible alpha-adrenoceptor blocking activity. Can J Physiol Pharmacol. 1979 May;57(5):510–516. doi: 10.1139/y79-077. [DOI] [PubMed] [Google Scholar]
- Chauhan S., Nayak N. C., Ramalingaswami V. The heart and skeletal muscle in experimental protein malnutrition in rhesus monkeys. J Pathol Bacteriol. 1965 Jul;90(1):301–309. doi: 10.1002/path.1700900134. [DOI] [PubMed] [Google Scholar]
- Chopra I. J., Smith S. R. Circulating thyroid hormones and thyrotropin in adult patients with protein-calorie malnutrition. J Clin Endocrinol Metab. 1975 Feb;40(2):221–227. doi: 10.1210/jcem-40-2-221. [DOI] [PubMed] [Google Scholar]
- Cohen E. M., Abelmann W. H., Messer J. V., Bing H. L. Mechanical properties of rat cardiac muscle during experimental thiamine deficiency. Am J Physiol. 1976 Nov;231(5 Pt 1):1390–1394. doi: 10.1152/ajplegacy.1976.231.5.1390. [DOI] [PubMed] [Google Scholar]
- Guarnieri T., Filburn C. R., Zitnik G., Roth G. S., Lakatta E. G. Contractile and biochemical correlates of beta-adrenergic stimulation of the aged heart. Am J Physiol. 1980 Oct;239(4):H501–H508. doi: 10.1152/ajpheart.1980.239.4.H501. [DOI] [PubMed] [Google Scholar]
- Karl D. M., Holm-Hansen O. Effects of luciferin concentration on the quantitative assay of ATP using crude luciferase preparations. Anal Biochem. 1976 Sep;75(1):100–112. doi: 10.1016/0003-2697(76)90060-9. [DOI] [PubMed] [Google Scholar]
- Karliner J. S., Barnes P., Hamilton C. A., Dollery C. T. alpha 1-Adrenergic receptors in guinea pig myocardium: identification by binding of a new radioligand, (3H)-prazosin. Biochem Biophys Res Commun. 1979 Sep 12;90(1):142–149. doi: 10.1016/0006-291x(79)91601-2. [DOI] [PubMed] [Google Scholar]
- Nutter D. O., Murray T. G., Heymsfield S. B., Fuller E. O. The effect of chronic protein-calorie undernutrition in the rat on myocardial function and cardiac function. Circ Res. 1979 Jul;45(1):144–152. doi: 10.1161/01.res.45.1.144. [DOI] [PubMed] [Google Scholar]
- Piza J., Troper L., Cespedes R., Miller J. H., Berenson G. S. Myocardial lesions and heart failure in infantile malnutrition. Am J Trop Med Hyg. 1971 Mar;20(2):343–355. doi: 10.4269/ajtmh.1971.20.343. [DOI] [PubMed] [Google Scholar]
- SMYTHE P. M., SWANEPOEL A., CAMPBELL J. A. The heart in kwashiorkor. Br Med J. 1962 Jan 13;1(5271):67–73. doi: 10.1136/bmj.1.5271.67. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Svoboda D., Grady H., Higginson J. The effects of chronic protein deficiency in rats. II. Biochemical and ultrastructural changes. Lab Invest. 1966 Apr;15(4):731–749. [PubMed] [Google Scholar]
- Varma D. R. Influence of dietary protein on the anti-inflammatory and ulcerogenic effects and on the pharmacokinetics of phenylbutazone in rats. J Pharmacol Exp Ther. 1979 Nov;211(2):338–344. [PubMed] [Google Scholar]
- Varma D. R. Myocardial effects and pharmacokinetics of digoxin and ouabain in protein-deficient guinea pigs. Can J Physiol Pharmacol. 1980 May;58(5):564–567. doi: 10.1139/y80-092. [DOI] [PubMed] [Google Scholar]
- Viart P. Hemodynamic findings in servere protein-calorie malnutrition. Am J Clin Nutr. 1977 Mar;30(3):334–348. doi: 10.1093/ajcn/30.3.334. [DOI] [PubMed] [Google Scholar]
- Yue T. L., Varma D. R. Pharmacokinetics, metabolism and disposition of salicylate in protein-deficient rats. Drug Metab Dispos. 1982 Mar-Apr;10(2):147–152. [PubMed] [Google Scholar]
