Reflex arc of the teeth clenching-induced pressor response in rats

Table 1 Baseline MAP and HR in the experiments

Protocol	n	MAP (mmHg)	HR (beats/min)
Stimulus frequency	5	91 ± 4	397 ± 8
Dantrolene sodium	5	101 ± 1	410 ± 10
SAD
Sham	5	88 ± 2	404 ± 14
SAD	6	99 ± 4	382 ± 16
Local anesthesia of molar regions
Vehicle (saline)	6	85 ± 5	384 ± 14
0.4% Lidocaine	6	82 ± 3	356 ± 16
0.8% Lidocaine	5	90 ± 2	369 ± 11
Gadolinium chloride entrapment in masticatory muscles
Vehicle (HEPES-buffered solution)	5	93 ± 2	358 ± 7
Gadolinium chloride	12	91 ± 3	358 ± 12
Masseter muscle stretch test	6	86 ± 3	379 ± 9
TRG-block
Vehicle (saline)	6	90 ± 4	392 ± 14
2% Lidocaine	8	94 ± 4	393 ± 14
8% Lidocaine	7	95 ± 2	374 ± 13
Hexamethonium chloride
1 mg kg⁻¹, iv	8	93 ± 3	393 ± 8
10 mg kg⁻¹, iv	8	91 ± 3	379 ± 8
Vasomotor response test	6	87 ± 2	403 ± 23
Atropine methyl nitrate	7	90 ± 2	427 ± 5

All values are expressed as mean ± SE. Baseline MAP and HR were measured and averaged for 30 s in the experiments
n number of rats, MAP mean arterial pressure, HR heart rate, SAD sinoaortic denervation, TRG-block trigeminal ganglion block

ISSN: 1880-6562