Effects of a beta-adrenergic agonist (L-644,969) and male sex condition on muscle growth and meat quality of callipyge lambs.

1996 ◽  
Vol 74 (1) ◽  
pp. 70 ◽  
Author(s):  
M Koohmaraie ◽  
S D Shackelford ◽  
T L Wheeler
Keyword(s):  
Meat Quality ◽  
Muscle Growth ◽  
Adrenergic Agonist ◽  
Beta Adrenergic ◽  
Male Sex ◽  
Beta Adrenergic Agonist

Eating quality of meat from pigs given the beta-adrenergic agonist salbutamol

Meat Science ◽  
1991 ◽  
Vol 30 (1) ◽  
pp. 75-80 ◽  
Author(s):  
P.D. Warriss ◽  
G.R. Nute ◽  
T.P. Rolph ◽  
S.N. Brown ◽  
S.C. Kestin
Keyword(s):  
Eating Quality ◽  
Adrenergic Agonist ◽  
Beta Adrenergic ◽  
Beta Adrenergic Agonist

The effects of the beta-adrenergic agonist salbutamol on meat quality in pigs.

1990 ◽  
Vol 68 (1) ◽  
pp. 128 ◽  
Author(s):  
P D Warriss ◽  
S C Kestin ◽  
T P Rolph ◽  
S N Brown
Keyword(s):  
Meat Quality ◽  
Adrenergic Agonist ◽  
Beta Adrenergic ◽  
Beta Adrenergic Agonist

Clenbuterol-induced muscle growth: investigation of possible mediation by insulin

1987 ◽  
Vol 253 (4) ◽  
pp. E370-E375 ◽  
Author(s):  
M. A. McElligott ◽  
J. E. Mulder ◽  
L. Y. Chaung ◽  
A. Barreto
Keyword(s):  
Weight Gain ◽  
Body Weight Gain ◽  
Muscle Growth ◽  
Diabetic Rats ◽  
Normal Diet ◽  
Beta Agonist ◽  
Feed Consumption ◽  
Adrenergic Agonist ◽  
Beta Adrenergic ◽  
Beta Adrenergic Agonist

The role of insulin as a possible mediator of the beta-adrenergic agonist stimulation of muscle growth was investigated. To exclude possible action of the beta-agonist on the pancreatic release of insulin, diabetes was induced in rats by a streptozotocin injection (100 mg/kg). Insulin levels were almost not detectable in these rats. Feeding either normal diet or diet containing the beta-adrenergic agonist clenbuterol (10 parts/million) did not alter plasma insulin concentrations. The effects of clenbuterol on muscle and weight gain were determined in diabetic rats given daily insulin replacement (D + I) and fed either a normal diet or clenbuterol-treated diet. Clenbuterol, fed for 1 wk, increased the wet weight of the gastrocnemius, soleus, and extensor digitorum longus muscles (15-23%) in both normal and D + I rats. Although clenbuterol increased body weight gain, it did not alter feed consumption and, therefore, feed efficiency (g gain/g food) was improved. Activities of cathepsin B and N-acetyl-beta-glucosaminidase, but not cathepsin D, were elevated in the soleus muscles of clenbuterol-treated rats. The clenbuterol-induced increase in muscle growth in the insulin-replaced diabetic rats indicated that this beta-adrenergic agonist effect was not mediated by an alteration of circulating levels of insulin, secondary to beta-agonist action on pancreatic insulin release.

Effect of adrenergic agonists on big and small renin

1980 ◽  
Vol 238 (5) ◽  
pp. E416-E420
Author(s):  
H. Iwao ◽  
C. S. Lin ◽  
A. M. Michelakis
Keyword(s):  
Submaxillary Gland ◽  
Plasma Renin ◽  
Adrenergic Agonists ◽  
Adrenergic Agonist ◽  
Beta Adrenergic ◽  
Molecular Weights ◽  
Submaxillary Glands ◽  
Beta Adrenergic Agonists ◽  
Beta Adrenergic Agonist ◽  
Alpha Adrenergic Agonist

The effect of alpha- and beta-adrenergic agonists on renal and submaxillary renin of different molecular weights was studied using male albino mice as experimental animals. Phenylephrine or isoproterenol was administered intravenously after removal of the submaxillary glands and/or kidneys. Renin was isolated from plasma by column chromatography and then measured by a direct radioimmunoassay. Phenylephrine increased both 68,500-dalton renin (big renin) and 38,000-dalton renin (small renin) in the plasma of nephrectomized mice. Isoproterenol increased big and small renin in the plasma of mice whose submaxillary glands were removed. In both cases, the increase of small renin was significantly greater than that of big renin. The results suggest that the alpha-adrenergic agonist phenylephrine affects the submaxillary gland, leading to the increase of both big and small plasma renin. In contrast, the beta-adrenergic agonist isoproterenol affects the kidney, leading to the increase of both big and small plasma renin.

Sign in / Sign up

Export Citation Format

Share Document