Neuronal Loss in the Rostral Ventromedial Medulla in a Rat Model of Neuropathic Pain
نویسندگان
چکیده
منابع مشابه
Neuronal loss in the rostral ventromedial medulla in a rat model of neuropathic pain.
Cell death has been reported in the CNS in models of neuropathic pain (Sugimoto et al., 1990; Whiteside and Munglani, 2001; Scholz et al., 2005; Fuccio et al., 2009). In our present study, we examined the effects of spinal nerve ligation (SNL) on the number of neurons in the rostral ventromedial medulla (RVM), a brainstem region involved in modulation of nociception. In rats receiving SNL, we f...
متن کاملAlleviation of neuropathic pain hypersensitivity by inhibiting neuronal pentraxin 1 in the rostral ventromedial medulla.
Peripheral nerve injury causes spontaneous and long-lasting pain, hyperalgesia, and allodynia. Excitatory amino acid receptor-dependent increases in descending facilitatory drive from the brainstem rostral ventromedial medulla (RVM) contribute to injury-evoked hypersensitivity. Although increased excitability likely reflects changes in synaptic efficacy, the cellular mechanisms underlying injur...
متن کاملEffect of Exercise on µ-Opioid Receptor Expression in the Rostral Ventromedial Medulla in Neuropathic Pain Rat Model
OBJECTIVE To investigate the effects of aerobic exercise on neuropathic pain and verify whether regular treadmill exercise alters opioid receptor expression in the rostral ventral medulla (RVM) in a neuropathic pain rat model. METHODS Thirty-two male Sprague-Dawley rats were used in the study. All rats were divided into 3 groups, i.e., group A, sham group (n=10); group B, chronic constriction...
متن کاملTime-dependent descending facilitation from the rostral ventromedial medulla maintains, but does not initiate, neuropathic pain.
Although injury-induced afferent discharge declines significantly over time, experimental neuropathic pain persists unchanged for long periods. These observations suggest that processes that initiate experimental neuropathic pain may differ from those that maintain such pain. Here, the role of descending facilitation arising from developing plasticity in the rostral ventromedial medulla (RVM) i...
متن کاملAdministration of orexin receptor 1 antagonist into the rostral ventromedial medulla increased swim stress-induced antinociception in rat
Objective(s): Intracerebroventricular injection of orexin-A (hypocretin-1) antagonist has been shown to inhibit stress-induced analgesia. However the locations of central sites that may mediate these effects have not been totally demonstrated. This study was performed to investigate the role of rostral ventromedial medulla (RVM) orexin receptor 1 in stress-induced analgesia (SIA). Materials and...
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ژورنال
عنوان ژورنال: Journal of Neuroscience
سال: 2011
ISSN: 0270-6474,1529-2401
DOI: 10.1523/jneurosci.1268-11.2011