Abstract:
:In the current study, we investigated the effect of the activation of the alpha-7 nicotinic acetylcholine receptor (α7 nAchR) on dextran sulphate sodium (DSS)-induced colitis and referred mechanical hyperalgesia in mice. Colitis was induced in CD1 male mice through the intake of 4% DSS in tap water for 7 days. Control mice received unadulterated water. Referred mechanical hyperalgesia was evaluated for 7 days after the beginning of 4% DSS intake. Referred mechanical hyperalgesia started within 1 day after beginning DSS drinking, peaked at 3 days and persisted for 7 days. This time course profile perfectly matched with the appearance of signs of colitis. Both acute and chronic oral treatments with nicotine (0.1-1.0 mg/kg, p.o.) were effective in inhibiting the established referred mechanical hyperalgesia. The antinociceptive effect of nicotine was completely abrogated by cotreatment with the selective α7 nAchR antagonist methyllycaconitine (MLA) (1.0 mg/kg). Consistent with these results, i.p. treatment with the selective α7 nAchR agonist PNU 282987 (0.1-1.0 mg/kg) reduced referred mechanical hyperalgesia at all periods of evaluation. Despite their antinociceptive effects, nicotinic agonists did not affect DSS-induced colonic damage or inflammation. Taken together, the data generated in the present study show the potential relevance of using α7 nAchR agonists to treat referred pain and discomfort associated with inflammatory bowel diseases.
journal_name
Neuropharmacologyjournal_title
Neuropharmacologyauthors
Costa R,Motta EM,Manjavachi MN,Cola M,Calixto JBdoi
10.1016/j.neuropharm.2012.06.004subject
Has Abstractpub_date
2012-10-01 00:00:00pages
798-805issue
5eissn
0028-3908issn
1873-7064pii
S0028-3908(12)00262-6journal_volume
63pub_type
杂志文章abstract::The role of dopamine in spinal motor transmission was investigated using spinal reflexes in acutely spinalized rats. Intravenous administration of a relatively high dose of the dopamine receptor agonist apomorphine-HCl (3 mg/kg) or the D2 receptor agonist bromocriptine mesylate (1 mg/kg) reduced the amplitude of the m...
journal_title:Neuropharmacology
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doi:10.1016/0028-3908(93)90186-7
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journal_title:Neuropharmacology
pub_type: 杂志文章
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pub_type: 杂志文章
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更新日期:1986-11-01 00:00:00
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journal_title:Neuropharmacology
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更新日期:2019-04-01 00:00:00
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journal_title:Neuropharmacology
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journal_title:Neuropharmacology
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journal_title:Neuropharmacology
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更新日期:2019-01-01 00:00:00
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journal_title:Neuropharmacology
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journal_title:Neuropharmacology
pub_type: 杂志文章
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journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/0028-3908(92)90157-k
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journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2018.01.030
更新日期:2018-05-01 00:00:00
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journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/0028-3908(95)00088-n
更新日期:1995-09-01 00:00:00
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journal_title:Neuropharmacology
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更新日期:2019-11-01 00:00:00
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doi:10.1016/j.neuropharm.2016.09.013
更新日期:2016-12-01 00:00:00
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journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/s0028-3908(99)00021-0
更新日期:1999-07-01 00:00:00
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journal_title:Neuropharmacology
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更新日期:2002-04-01 00:00:00
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journal_title:Neuropharmacology
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journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2007.11.004
更新日期:2008-03-01 00:00:00
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journal_title:Neuropharmacology
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更新日期:2016-02-01 00:00:00
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journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2016.10.029
更新日期:2017-02-01 00:00:00
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journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2009.06.023
更新日期:2010-01-01 00:00:00
abstract::Dopamine (DA) efflux from terminals of the mesocorticolimbic system is linked to incentive motivation, drug dependency and schizophrenia. Strategies for modulating dopaminergic activity have focused on transmitter receptors or the DA transporter, not on DA release, largely due to lack of systemically available drugs a...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2009.02.001
更新日期:2009-05-01 00:00:00
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journal_title:Neuropharmacology
pub_type: 杂志文章
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journal_title:Neuropharmacology
pub_type: 杂志文章,评审
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更新日期:2007-01-01 00:00:00
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journal_title:Neuropharmacology
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更新日期:2013-07-01 00:00:00
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journal_title:Neuropharmacology
pub_type: 杂志文章
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更新日期:2020-11-01 00:00:00
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journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/0028-3908(93)90138-s
更新日期:1993-09-01 00:00:00
abstract::Prenatal hypoxia ischemia is a major cause of neurodevelopmental impairment in the newborn, associated with risk for motor, behavioral and cognitive impaired outcomes. We used an established mouse model of maternal hypoxia to examine the immediate molecular responses of signaling pathways associated with both cell dea...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2009.07.028
更新日期:2009-10-01 00:00:00
abstract::The effects of microiontophoretically-applied and pneumatically-applied morphine on the spontaneous discharge of Purkinje cells in the cerebellum of the anesthetized cat were examined. Microiontophoretic application of morphine produced both inhibitory and excitatory responses of the Purkinje cells. Pneumatic applicat...
journal_title:Neuropharmacology
pub_type: 杂志文章
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更新日期:1989-03-01 00:00:00