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Ketamine-induced peripheral analgesia in rats

  
@article{APS6951,
	author = {Li Bai and Zhi-Qi Zhao},
	title = {Ketamine-induced peripheral analgesia in rats},
	journal = {Acta Pharmacologica Sinica},
	volume = {18},
	number = {4},
	year = {2016},
	keywords = {},
	abstract = {AIM: To examine whether ketamine may directly act at peripheral nociceptors to
produce analgesia.
METHODS: Wistar rats were anesthetized with urethane. As a nociceptive flexion
reflex (FR), C responses from the posterior biceps semitendinosus (PBST) muscle
was evoked by electrical stimulation (2 ms, 80 V, 2-3 pulses, 0.5 Hz) via a pair 
of stainless steel needles inserted subcutaneously applied to the two toes of
ipsilateral hindpw.
RESULTS: Subcutaneous injection of ketamine (36 mmol.L-1, 5 microL) into the
ipsilateral hindpaw produced an inhibition of C responses. At 9 min after
application of ketamine, injection of naloxone (1%, 5 microL) into the same area 
annulled ketamine-induced inhibition.
CONCLUSION: Ketamine as a dissociate anesthetic acts on peripheral nociceptors to
produce analgesia, which is related to activity of peripheral opioid receptors.},
	issn = {1745-7254},	url = {http://www.chinaphar.com/article/view/6951}
}