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Soluble in water to 100 mM
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20°C. Generally, these will be useable for up to one month. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.
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To assess the effects of blockade of muscarine-dependent K+ current, IM, under voltage clamp conditions, and to determine if carbachol, CCh, acts through the blockade of an additional conductance other than IM, voltage ramps were performed in ACSF containing TTX (0.5 µM), ZD7288 (50 µM), prior to and during sequential addition of XE-991 (10 µM) and CCh (50 µM) (n=9). Application of XE-991 in the presence of TTX and ZD7288 resulted in a significant increase in current required to hold neurons at −60 mV (−18.1±6.6 pA; N–K: p<0.05).
Bath application of XE-991 (10 µM; white bar) resulted in an inward current in cells held at −60 mV indicating that the cells express IM, and the subsequent perfusion with CCh (50 µM) resulted in an additional inward current, suggesting that CCh blocks a second K+ conductance (*: p<0.05).
Right - TBP does induce LTP in the presence of the Kv7 channel inhibitor XE-991 (ab120089). In the presence of XE-991 (10 µM), coincident TBP of subthreshold EPSPs and somatic action potentials induced pathway-specific LTP.
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