Title : Thr164Ile polymorphism of the human beta2-adrenoceptor exhibits blunted desensitization of cardiac functional responses in vivo.

Pub. Date : 2003 Nov

PMID : 12869379






5 Functional Relationships(s)
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1 Compared with WT beta2AR subjects, Thr164Ile subjects exhibited a blunted terbutaline-induced maximum increase in HR (WT 32 +/- 4 beats/min, Thr164Ile 19 +/- 3 beats/min, P < 0.05) and contractility (WT -54 +/- 2 ms, Thr164Ile -37 +/- 6 ms, P < 0.05). Terbutaline adenosine A2a receptor Homo sapiens
2 Two-week oral terbutaline treatment desensitized cardiac beta2AR responses to terbutaline infusion (increase in HR: WT 10 +/- 2 beats/min, Thr164Ile 8 +/- 4 beats/min; increase in contractility: WT -22 +/- 5 ms Thr164Ile: -17 +/- 6 ms); however, the extent of desensitization was larger in WT than Thr164Ile beta2AR subjects. Terbutaline adenosine A2a receptor Homo sapiens
3 Two-week oral terbutaline treatment desensitized cardiac beta2AR responses to terbutaline infusion (increase in HR: WT 10 +/- 2 beats/min, Thr164Ile 8 +/- 4 beats/min; increase in contractility: WT -22 +/- 5 ms Thr164Ile: -17 +/- 6 ms); however, the extent of desensitization was larger in WT than Thr164Ile beta2AR subjects. Terbutaline adenosine A2a receptor Homo sapiens
4 Two-week oral terbutaline treatment desensitized cardiac beta2AR responses to terbutaline infusion (increase in HR: WT 10 +/- 2 beats/min, Thr164Ile 8 +/- 4 beats/min; increase in contractility: WT -22 +/- 5 ms Thr164Ile: -17 +/- 6 ms); however, the extent of desensitization was larger in WT than Thr164Ile beta2AR subjects. Terbutaline adenosine A2a receptor Homo sapiens
5 Two-week oral terbutaline treatment desensitized cardiac beta2AR responses to terbutaline infusion (increase in HR: WT 10 +/- 2 beats/min, Thr164Ile 8 +/- 4 beats/min; increase in contractility: WT -22 +/- 5 ms Thr164Ile: -17 +/- 6 ms); however, the extent of desensitization was larger in WT than Thr164Ile beta2AR subjects. Terbutaline adenosine A2a receptor Homo sapiens