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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Comparison of reflex-based and operant methods when evaluating effects of treatment on pain in experimetnal models
 Panušková, Kristýna ; Vaculín, Šimon (advisor) ; Šustková, Magdaléna (referee)
Pharmacological treatment of neuropathic pain is still insufficient. Methylphenidate, a psychostimulant that increases the dopamine and noradrenaline levels, is commonly used for treating ADHD. There have been reports of changes in patients pain thresholds by ADHD patients treated with methylphenidate. The aim of the study is to examine if methylphenidate can affect peripheral neuropathic pain. Neuropathic pain has been modelled on laboratory rats by chronic constriction of the ischiatic nerve. The effect of methylphenidate on the evoked pain component was evaluated on control animals and on animals with neuropathic pain using reflex (plantar test, vonFrey test) and operanting test (thermal place preference). The effect of methylphenidate on the spontaneous components of pain was evaluated using the methods of conditioned place preference. This study has proven that methylphenidate in an applicable dose of 1 mg/kg has an antialodynic effect but does not act antinociceptively. This study further confirms that methylphenidate in low doses does not act as attractant and has no effect on spontaneous pain. The last part of the study compares the different methods for pain measurement and comes to the conclusion that the plantar test is not an adequate method for evaluating the effect of analgesics...
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Reflexive measurement of thermal hyperalgesia in neuropathic pain model
 Panušková, Kristýna ; Vaculín, Šimon (advisor) ; Adámek, Pavel (referee)
Neuropathic pain substantially decreases a person's quality of life and thus far nothing has been invented that can alleviate that pain. One of the most commonly used model for induced peripheral neuropathic pain in animals is chronic constriction of the sciatic nerve. Experimental induction of neuropathic pain in rats is verified by reflexive measurement. Reflexive measuring can also be used to test the efficacy of the experimental treatment. The large range of reflexive tests that can be applied differ in terms of the stimulus used and the area of stimulation. This bachelor thesis will focus on analyses of the thermal pain threshold after a chronic constriction injury (CCI) to the sciatic nerve. Articles used in this thesis were found in the electronic database PUBMED/MEDLINE by searching for the terms "chronic constriction injury" and "pain threshold" for last 10 years. Articles related to the thermal pain threshold of rats after CCI were ranked according to the prestige of magazine that published them and ten articles with a quartile of 1 were selected for further analyses. The tests used, control methods during the study, measuring interval, measurement before operation and pain threshold values were extracted from these articles. Measurement of behavioral signs is not unified. The Hargreaves...
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