Acid-sensing ion channels in trigeminal ganglion neurons innervating the orofacial region contribute to orofacial inflammatory pain

2016 ◽  
Vol 43 (2) ◽  
pp. 193-202 ◽  
Author(s):  
Hui Fu ◽  
Peng Fang ◽  
Hai-Yun Zhou ◽  
Jun Zhou ◽  
Xiao-Wei Yu ◽  
...  
2015 ◽  
Vol 65 (S2) ◽  
pp. S29-S35
Author(s):  
Wachirapong Saleeon ◽  
Ukkrit Jansri ◽  
Anan Srikiatkhachorn ◽  
Saknan Bongsebandhu-phubhakdi

Author(s):  
Ming Zhangyin ◽  
Tan Yan ◽  
Fu Hui ◽  
Cao Xuehong ◽  
Pan Jianping ◽  
...  

1996 ◽  
Vol 270 (6) ◽  
pp. C1807-C1814 ◽  
Author(s):  
L. Liu ◽  
S. A. Simon

Nicotine and capsaicin produce many similar physiological responses that include pain, irritation, and vasodilation. To determine whether neuronal nicotine acetylcholine receptors (nAChR) are present on capsaicin-sensitive neurons, whole cell patch-clamp recordings were performed on rat trigeminal ganglion cells. It was found that approximately 20% of the total number of neurons tested was activated by both 100 microM nicotine and 1 nM capsaicin. Other subsets of neurons were activated by only one of these compounds, whereas a fourth subset was not activated by either compound. At -60 mV, the magnitude of the capsaicin-activated currents was about three times larger than the magnitude of the nicotine-activated currents. The current-voltage relationship of the nAChR exhibited marked rectification, such that for voltages > or = 0 mV the current was essentially zero. In contrast, the current-voltage relationship of the capsaicin-activated current was ohmic from +/- 60 mV. These data indicate the existence of subsets of capsaicin-sensitive afferent neurons.


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