K_V1 and K_V3 Potassium Channels Identified at Presynaptic Terminals of the Corticostriatal Synapses in Rat

Table 1

Effects of channels blockers on PPR. Statistical summary.

	Before			After			% PPR
	PPR	Median	Range	PPR	Median	Range
TEA	2.35 ± 0.58	1.96	1.21–5.49	1.35 ± 0.29	0.99	0.84–3.02	60.98		7
4-AP	2.63 ± 0.49	1.97	1.08–5.56	0.55 ± 0.12	0.36	0.07–1.11	76.93		11
Heteropodatoxin	1.31 ± 0.33	1.31	0.98–1.64	1.26 ± 0.28	1.26	0.98–0.15	25.68	NS	3
Phrixotoxin-2	1.09 ± 0.12	1.12	0.87–1.30	1.28 ± 0.12	1.28	1.07–1.45	17.01	NS	4
BDS-1	2.71 ± 0.90	3.21	0.97–3.97	1.57 ± 0.40	1.61	0.85–2.24	33.90	NS	3
Agitoxin-1	1.55 ± 0.05	1.55	1.42–1.68	1.01 ± 0.07	1.01	0.81–1.20	19.70		6
Margatoxin	1.37 ± 0.20	1.44	0.76–2.04	1.10 ± 0.15	1.13	0.62–1.62	20.87		6
Hongotoxin	1.62 ± 0.28	1.42	1.14–2.69	1.34 ± 0.23	1.06	1.00–2.36	17.04		6
Tityustoxin	1.37 ± 0.21	1.44	0.59–1.72	1.05 ± 0.16	1.02	0.59–1.72	18.49	NS	6
Dendrotoxin	1.30 ± 0.10	1.20	0.85–2.15	0.83 ± 0.12	0.73	0.21–1.74	79.07		14

⁢;  ; NS: no significance.