Over the past decade,several biochemical pathways have been investigated to understand the underlying mechanisms involved in the beneficial effects of physical exercise on cognition.1,2 Lourenco et al.,3 in an elegant...Over the past decade,several biochemical pathways have been investigated to understand the underlying mechanisms involved in the beneficial effects of physical exercise on cognition.1,2 Lourenco et al.,3 in an elegant study published in Nature Medicine,examined the relationship between exercise training and hippocampal memory function.Mechanistically,the authors showed that FNDC5/irisin is an important mediator of beneficial effects of physical exercise in a mouse model of Alzheimer's disease.展开更多
Objective： The present study aimed to evaluate the analgesic and anti-inflammatory effects of far infrared-emitting ceramics （cFIRs） in a model of persistent inflammatory hyperalgesia and to elucidate the possible ...Objective： The present study aimed to evaluate the analgesic and anti-inflammatory effects of far infrared-emitting ceramics （cFIRs） in a model of persistent inflammatory hyperalgesia and to elucidate the possible mechanisms of these effects. Methods： Mice were injected with complete Freund＇s adjuvant （CFA） and treated with cFIRs via place- ment on a pad impregnated with cFIRs on the bottom of the housing unit for different periods of time. Mice underwent mechanical hyperalgesia and edema assessments, and tumor necrosis factor-α （TNF-α）, interleukin-1β （IL-1β） and IL-10 levels were measured. Twenty-four hours after CFA injection and 30 min before cFIR treatment, mice were pretreated with a nonselective adenosinergic antagonist, caffeine, the selective adenosine receptor A antagonist, 1,3-dipropyl-8-cyclopentylxanthine （DPCPX）, the selective cannabinoid receptor type 1 antagonist, AM281, the selective cannabinoid receptor type 2 antagonist, AM630, or the nonselective opioid receptor antagonist, naloxone, and mechanical hyperalge- sia was assessed. Results： cFIRs statistically （P 〈 0.05） decreased CFA-induced mechanical hyperalgesia （82.86 ±5.21）% in control group vs （56.67±9.54）% in cFIR group） and edema （（1699.0 ± 77.8） gm in control group vs （988.7±107.6） gm in cFIR group）, cFIRs statistically （P 〈 0.05） reduced TNF-α （0.478± 0.072） pg/mg of protein in control group vs （0.273 ±0.055） pg/mg of protein in cFIR group） and IL-113 （（95.81 ± 3.95） pg/mg of protein in control group vs （80.61 ±4.71）pg/mg of protein in cFIR group） levels and statistically （P〈 0.05） increased IL-10 （（18.32 ±0.78） pg/mg of protein in control group vs （25.89 ±1.23） pg/mg of protein in cFIR group） levels in post-CFA-injected paws. Peripheral pre-administration of inhibitory neuroreceptor antagonists （caffeine, DPCPX, AM281, AM630 and naloxone） prevented the analgesic effects of cF1Rs （P 〈 0.05）.Conclusion： These data provide additional support for the use of cFIRs in the treatment of painful inflam- matory conditions and contribute to our understanding of the neurobiological mechanisms of the ther- apeutic effects of cFIRs.展开更多
基金supported by the German Research Foundation (DFG BU 1837/5-1BU 1837/5-2)
文摘Over the past decade,several biochemical pathways have been investigated to understand the underlying mechanisms involved in the beneficial effects of physical exercise on cognition.1,2 Lourenco et al.,3 in an elegant study published in Nature Medicine,examined the relationship between exercise training and hippocampal memory function.Mechanistically,the authors showed that FNDC5/irisin is an important mediator of beneficial effects of physical exercise in a mouse model of Alzheimer's disease.
基金supported by grants from the National Council of Scientific and Technological Development(CNPq)grant#14/2013the Santa Catarina State Foundation in Support of Research and Innovation(FAPESC)grant#04/2012+1 种基金the Coordination of Higher Education Personnel Improvement(CAPES)the UNISUL Scientific Initiation Program(PUIC),Brazil
文摘Objective： The present study aimed to evaluate the analgesic and anti-inflammatory effects of far infrared-emitting ceramics （cFIRs） in a model of persistent inflammatory hyperalgesia and to elucidate the possible mechanisms of these effects. Methods： Mice were injected with complete Freund＇s adjuvant （CFA） and treated with cFIRs via place- ment on a pad impregnated with cFIRs on the bottom of the housing unit for different periods of time. Mice underwent mechanical hyperalgesia and edema assessments, and tumor necrosis factor-α （TNF-α）, interleukin-1β （IL-1β） and IL-10 levels were measured. Twenty-four hours after CFA injection and 30 min before cFIR treatment, mice were pretreated with a nonselective adenosinergic antagonist, caffeine, the selective adenosine receptor A antagonist, 1,3-dipropyl-8-cyclopentylxanthine （DPCPX）, the selective cannabinoid receptor type 1 antagonist, AM281, the selective cannabinoid receptor type 2 antagonist, AM630, or the nonselective opioid receptor antagonist, naloxone, and mechanical hyperalge- sia was assessed. Results： cFIRs statistically （P 〈 0.05） decreased CFA-induced mechanical hyperalgesia （82.86 ±5.21）% in control group vs （56.67±9.54）% in cFIR group） and edema （（1699.0 ± 77.8） gm in control group vs （988.7±107.6） gm in cFIR group）, cFIRs statistically （P 〈 0.05） reduced TNF-α （0.478± 0.072） pg/mg of protein in control group vs （0.273 ±0.055） pg/mg of protein in cFIR group） and IL-113 （（95.81 ± 3.95） pg/mg of protein in control group vs （80.61 ±4.71）pg/mg of protein in cFIR group） levels and statistically （P〈 0.05） increased IL-10 （（18.32 ±0.78） pg/mg of protein in control group vs （25.89 ±1.23） pg/mg of protein in cFIR group） levels in post-CFA-injected paws. Peripheral pre-administration of inhibitory neuroreceptor antagonists （caffeine, DPCPX, AM281, AM630 and naloxone） prevented the analgesic effects of cF1Rs （P 〈 0.05）.Conclusion： These data provide additional support for the use of cFIRs in the treatment of painful inflam- matory conditions and contribute to our understanding of the neurobiological mechanisms of the ther- apeutic effects of cFIRs.
