nervous system
N |
• neuronal counts in dorsal root ganglia are normal
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behavior/neurological
N |
• thermotaxis gradient tests, hot and cold plate tests and Hargreaves tests all normal
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• in formalin tests, first response is typical
• second response is earlier but actual time spent in response behaviors is similar to controls
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• acute mechanical pain responses are normal
• in a carageenan model, hypersensitivity developed typically but persisted longer
• chronic constriction injury models of pain also show a longer duration for pain responses
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homeostasis/metabolism
• no analgesic effect of interthecal injection of baclofen in a spared nerve injury model of pain
• inhibitory effect of baclophen on HVA Ca channels is significantly reduced
• the presynaptic inhibition of invoked responses by baclofen is impaired (lowered paired pulse ratio)
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