Muscarinic receptor subtypes, beta-adrenoceptors and camp in the tracheal smooth-muscle of conventional and double-muscled calves.
- Author
- E Roets, Christian Burvenich (UGent) and M Roberts
- Organization
- Abstract
- The total muscarinic (M1 + M2 + M3) and beta-adrenergic receptors in the tracheal smooth muscle of conventional and double-muscled calves were identified and characterized with the non-specific antagonists [H-3]quinuclidinyl benzilate ([H-3]QNB) and [H-3]dihydroalprenolol ([H-3]DHA) respectively. Although the quantity of beta-adrenoceptors in double-muscled calves was 25% lower (p < 0.05) than in conventional calves (Bmax = 327 +/- 89 fmol/mg protein), adenylate cyclase assays indicated that the basal adenylate cyclase activity and the (-)-isopropylnoradrenaline (ISO)- and sodium fluoride (NaF)-stimulated values were not significantly different between these calves. However, the density of muscarinic receptors in double-muscled calves was 40% higher (p < 0.01) than in conventional calves (Bmax = 2955 +/- 625 fmol/mg protein). Subtypes of muscarinic receptors were studied with [H-3]telenzepine (M1-receptors), [H-3]AF-DX 384 (M2-receptors) and [H-3]4DAMP (M1 and M3-receptors). It was found that in both double-muscled and conventional calves about 40% of the receptors were of the M3-subtype, the remaining 60% being M2-receptors. From these results,it is suggested that inflammation of the respiratory tract in double-muscled calves may be complicated by an imbalance between the cholinergic bronchoconstrictor and the beta-adrenergic bronchodilator components of the autonomic nervous system.
- Keywords
- DOUBLE-MUSCLED CALVES, MUSCARINIC RECEPTORS, BETA-ADRENOCEPTORS, TRACHEA, CHOLINERGIC RECEPTORS, MUCOSA, ADRENERGIC RECEPTORS, MEMBRANES, SMOOTH MUSCLE
Citation
Please use this url to cite or link to this publication: http://hdl.handle.net/1854/LU-200903
- MLA
- Roets, E., et al. “Muscarinic Receptor Subtypes, Beta-Adrenoceptors and Camp in the Tracheal Smooth-Muscle of Conventional and Double-Muscled Calves.” VETERINARY RESEARCH COMMUNICATIONS, vol. 16, no. 6, 1992, pp. 465–76, doi:10.1007/BF01839024.
- APA
- Roets, E., Burvenich, C., & Roberts, M. (1992). Muscarinic receptor subtypes, beta-adrenoceptors and camp in the tracheal smooth-muscle of conventional and double-muscled calves. VETERINARY RESEARCH COMMUNICATIONS, 16(6), 465–476. https://doi.org/10.1007/BF01839024
- Chicago author-date
- Roets, E, Christian Burvenich, and M Roberts. 1992. “Muscarinic Receptor Subtypes, Beta-Adrenoceptors and Camp in the Tracheal Smooth-Muscle of Conventional and Double-Muscled Calves.” VETERINARY RESEARCH COMMUNICATIONS 16 (6): 465–76. https://doi.org/10.1007/BF01839024.
- Chicago author-date (all authors)
- Roets, E, Christian Burvenich, and M Roberts. 1992. “Muscarinic Receptor Subtypes, Beta-Adrenoceptors and Camp in the Tracheal Smooth-Muscle of Conventional and Double-Muscled Calves.” VETERINARY RESEARCH COMMUNICATIONS 16 (6): 465–476. doi:10.1007/BF01839024.
- Vancouver
- 1.Roets E, Burvenich C, Roberts M. Muscarinic receptor subtypes, beta-adrenoceptors and camp in the tracheal smooth-muscle of conventional and double-muscled calves. VETERINARY RESEARCH COMMUNICATIONS. 1992;16(6):465–76.
- IEEE
- [1]E. Roets, C. Burvenich, and M. Roberts, “Muscarinic receptor subtypes, beta-adrenoceptors and camp in the tracheal smooth-muscle of conventional and double-muscled calves.,” VETERINARY RESEARCH COMMUNICATIONS, vol. 16, no. 6, pp. 465–476, 1992.
@article{200903, abstract = {{The total muscarinic (M1 + M2 + M3) and beta-adrenergic receptors in the tracheal smooth muscle of conventional and double-muscled calves were identified and characterized with the non-specific antagonists [H-3]quinuclidinyl benzilate ([H-3]QNB) and [H-3]dihydroalprenolol ([H-3]DHA) respectively. Although the quantity of beta-adrenoceptors in double-muscled calves was 25% lower (p < 0.05) than in conventional calves (Bmax = 327 +/- 89 fmol/mg protein), adenylate cyclase assays indicated that the basal adenylate cyclase activity and the (-)-isopropylnoradrenaline (ISO)- and sodium fluoride (NaF)-stimulated values were not significantly different between these calves. However, the density of muscarinic receptors in double-muscled calves was 40% higher (p < 0.01) than in conventional calves (Bmax = 2955 +/- 625 fmol/mg protein). Subtypes of muscarinic receptors were studied with [H-3]telenzepine (M1-receptors), [H-3]AF-DX 384 (M2-receptors) and [H-3]4DAMP (M1 and M3-receptors). It was found that in both double-muscled and conventional calves about 40% of the receptors were of the M3-subtype, the remaining 60% being M2-receptors. From these results,it is suggested that inflammation of the respiratory tract in double-muscled calves may be complicated by an imbalance between the cholinergic bronchoconstrictor and the beta-adrenergic bronchodilator components of the autonomic nervous system.}}, author = {{Roets, E and Burvenich, Christian and Roberts, M}}, issn = {{0165-7380}}, journal = {{VETERINARY RESEARCH COMMUNICATIONS}}, keywords = {{DOUBLE-MUSCLED CALVES,MUSCARINIC RECEPTORS,BETA-ADRENOCEPTORS,TRACHEA,CHOLINERGIC RECEPTORS,MUCOSA,ADRENERGIC RECEPTORS,MEMBRANES,SMOOTH MUSCLE}}, language = {{eng}}, number = {{6}}, pages = {{465--476}}, title = {{Muscarinic receptor subtypes, beta-adrenoceptors and camp in the tracheal smooth-muscle of conventional and double-muscled calves.}}, url = {{http://doi.org/10.1007/BF01839024}}, volume = {{16}}, year = {{1992}}, }
- Altmetric
- View in Altmetric
- Web of Science
- Times cited: