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Study on Response of TRPV1 Sensitive Neurons in Spinal Cord under Moxibustion of Different Temperatures / 中国中医药信息杂志
Chinese Journal of Information on Traditional Chinese Medicine ; (12): 48-52, 2018.
Article in Chinese | WPRIM | ID: wpr-707023
ABSTRACT
Objective To observe the response of TRPV1 sensitive neurons in spinal cord under moxibustion of different temperatures in "Zusanli". Methods Totally 40 healthy male SD rats were chosen and stimulated with moxibustion at "Zusanli" in 41 ℃, 45 ℃ and 49 ℃. Extracellular recording techniques of glass microelectrode was used in the rats' L4spinal cord neurons. Capsaicin vehicle and solution was injected into the rats through "Zusanli" to filter the sensitive neuron to TRPV1. The response of sensitive neurons to TRPV1 in spinal cord under moxibustion of three different temperatures was recorded and compared. Results The TRPV1 sensitive neurons responded to all the three temperatures. Viewing from the nature of the responding neurons, the neuron in 45 ℃ and 49 ℃ mainly performed in agitation, while the number of agitated and inhibitory neurons appeared same in 41 ℃. Viewing from the character of the responding neurons, different temperatures correspond to differential discharge frequency 41 ℃was (8.26±2.14) spikes/s, 45 ℃ was (4.69±2.61) spikes/s, 49 ℃ was (10.66±5.97) spikes/s. Viewing from the change of discharge frequency, the neurons in 41 ℃ was found without obvious change, while the neurons in 45 ℃and 49 ℃ discharge frequency apparently increased (P<0.01). Conclusion Sensitive neurons in TRPV1 in spinal cord can response to 41 ℃, 45 ℃ and 49 ℃, whose character, nature and degree are related to the temperature gradient.

Full text: Available Index: WPRIM (Western Pacific) Type of study: Diagnostic study Language: Chinese Journal: Chinese Journal of Information on Traditional Chinese Medicine Year: 2018 Type: Article

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Full text: Available Index: WPRIM (Western Pacific) Type of study: Diagnostic study Language: Chinese Journal: Chinese Journal of Information on Traditional Chinese Medicine Year: 2018 Type: Article