Abstract | BACKGROUND AND PURPOSE: EXPERIMENTAL APPROACH: KEY RESULTS:
Mirabegron significantly increased contractile force in human right atrium (1 μM, 7.6 ± 2.6%, n = 7; 10 μM, 10.2 ± 1.5%, n = 22 compared with (-)- isoprenaline P < 0.05). In the presence of IBMX, mirabegron (10 μM) caused a greater contraction. L-748,337 (100 nM) had no effect on the increase in contractile force caused by mirabegron (10 μM). In contrast, mirabegron (10 μM) reduced contractile force in the presence of CGP 20712A, which was not affected by L-748,337 (100 nM) or ICI 118,551 (50 nM). Mirabegron (10 μM) also reduced contractile force in the presence of desipramine or phenoxybenzamine. CONCLUSIONS AND IMPLICATIONS:
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Authors | Weilan Mo, Martin C Michel, Xiang Wen Lee, Alberto J Kaumann, Peter Molenaar |
Journal | British journal of pharmacology
(Br J Pharmacol)
Vol. 174
Issue 16
Pg. 2706-2715
(Aug 2017)
ISSN: 1476-5381 [Electronic] England |
PMID | 28574581
(Publication Type: Journal Article)
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Copyright | © 2017 The British Pharmacological Society. |
Chemical References |
- Acetanilides
- Adrenergic beta-Agonists
- Adrenergic beta-Antagonists
- Imidazoles
- Propanolamines
- Receptors, Adrenergic, beta
- Thiazoles
- ICI 118551
- CGP 20712A
- mirabegron
- 1-Methyl-3-isobutylxanthine
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Topics |
- 1-Methyl-3-isobutylxanthine
(pharmacology)
- Acetanilides
(pharmacology)
- Adrenergic beta-Agonists
(pharmacology)
- Adrenergic beta-Antagonists
(pharmacology)
- Aged
- Atrial Function
(drug effects)
- Female
- Heart Atria
(drug effects)
- Humans
- Imidazoles
(pharmacology)
- In Vitro Techniques
- Male
- Middle Aged
- Myocardial Contraction
(drug effects)
- Propanolamines
(pharmacology)
- Receptors, Adrenergic, beta
(physiology)
- Thiazoles
(pharmacology)
|