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Publications (9)
Kyotorphin (KTP; L-Tyr-L-Arg), an endogenous neuropeptide, is potently analgesic when delivered directly to the central nervous system. Its weak analgesic effects after systemic administration have been explained by inability to cross the blood-brain barrier (BBB) and detract from the possible clinical use of KTP as an analgesic. In this study, we...
Nociceptive transmission from the spinal cord is controlled by supraspinal pain modulating systems that include the caudal ventrolateral medulla (CVLM). The neuropeptide angiotensin II (Ang II) has multiple effects in the CNS and at the medulla oblongata. Here we evaluated the expression of angiotensin type 1 (AT(1)) receptors in spinally-projectin...
Herpes Simplex Virus type 1 (HSV-1) vectors are known to inhibit nociceptive transmission at the spinal cord after peripheral applications. Similar approaches may also be useful when applied at the supraspinal pain control system as the system includes pronociceptive (facilitatory) components. We performed a study aimed to analyse the migration of...
Chronic inflammatory pain induces short- and long-term central changes, which have been mainly studied at the spinal cord level. Supraspinal pain control centers intrinsically connected with the dorsal horn are also prone to be affected by chronic inflammatory pain. C-fos expression was used as a neuronal activation marker at spinal and supraspinal...
Secondary hyperalgesia in the monoarthritic rat is accompanied by a decrease in nociceptive activation of spinal neurons expressing GABA(B) receptors and by the opposite effect in the cells expressing neurokinin 1 (NK1)-receptors. In order to ascertain the relative role of each receptor, the effects of intrathecal administration of SP-saporin (SP-S...
The neurochemical changes that operate in nociceptive spinal cord circuits during secondary hyperalgesia are largely unknown, in particular with respect to the balance between excitatory and inhibitory neurotransmission. In this study we evaluated the expression of NK1 and GABA(B) receptors in nociceptive spinal neurons in a model of secondary hype...
