Analgesic efficacy of tramadol, pregabalin and ibuprofen in menthol-evoked cold hyperalgesia. 2009

Kosta Altis, and Achim Schmidtko, and Carlo Angioni, and Karina Kuczka, and Helmut Schmidt, and Gerd Geisslinger, and Jörn Lötsch, and Irmgard Tegeder
pharmazentrum frankfurt/ZAFES, Klinikum der Johann Wolfgang Goethe-Universität Frankfurt am Main, Frankfurt am Main, Germany.

We investigated the analgesic efficacy of single doses of ibuprofen, tramadol and pregabalin in menthol-evoked cold pain in a randomized, placebo-controlled four-way cross-over study in 20 healthy volunteers. Tramadol 100mg significantly reduced menthol-evoked cold hyperalgesia. Effects of ibuprofen 600mg and pregabalin 100mg were not significant. Analgesic effects of tramadol were associated with minor side effects, particularly fatigue and nausea. Minor side effects also accompanied analgesic effects of pregabalin and ibuprofen in subjects responding to these drugs, mostly fatigue, dizziness and difficulties to concentrate for pregabalin and gastric upset for ibuprofen. Five out of 18 subjects had a 50% reduction of cold hyperalgesia with tramadol, three of these additionally responded to pregabalin, and two with all three drugs. The numbers needed to treat (NNT >or= 50% for tramadol 4.5, for pregabalin 9) largely agree with the reported efficacy of tramadol and of moderate dosages of pregabalin in patients with peripheral or central neuropathic pain suggesting that menthol-evoked cold pain hypersensitivity may represent a valid model for neuropathic pain, particularly cold allodynia.

UI MeSH Term Description Entries
D007052 Ibuprofen A non-steroidal anti-inflammatory agent with analgesic, antipyretic, and anti-inflammatory properties Advil,Benzeneacetic Acid, alpha-methyl-4-(2-methylpropyl)- trimethylsilyl ester,Brufen,Ibumetin,Ibuprofen, (+-)-Isomer,Ibuprofen, (R)-Isomer,Ibuprofen, (S)-Isomer,Ibuprofen, Aluminum Salt,Ibuprofen, Calcium Salt,Ibuprofen, Copper (2+) Salt,Ibuprofen, Magnesium Salt,Ibuprofen, Potassium Salt,Ibuprofen, Sodium Salt,Ibuprofen, Zinc Salt,Ibuprofen-Zinc,Motrin,Nuprin,Rufen,Salprofen,Trauma-Dolgit Gel,alpha-Methyl-4-(2-methylpropyl)benzeneacetic Acid,Ibuprofen Zinc,Trauma Dolgit Gel
D008297 Male Males
D008610 Menthol A monoterpene cyclohexanol produced from mint oils. Cyclohexanol, 5-methyl-2-(1-methylethyl)-,Menthol, (1alpha,2beta,5alpha)-Isomer
D010147 Pain Measurement Scales, questionnaires, tests, and other methods used to assess pain severity and duration in patients or experimental animals to aid in diagnosis, therapy, and physiological studies. Analgesia Tests,Analogue Pain Scale,Formalin Test,McGill Pain Questionnaire,Nociception Tests,Pain Assessment,Pain Intensity,Pain Severity,Tourniquet Pain Test,Visual Analogue Pain Scale,Analog Pain Scale,Assessment, Pain,McGill Pain Scale,Visual Analog Pain Scale,Analgesia Test,Analog Pain Scales,Analogue Pain Scales,Formalin Tests,Intensity, Pain,Measurement, Pain,Nociception Test,Pain Assessments,Pain Intensities,Pain Measurements,Pain Questionnaire, McGill,Pain Scale, Analog,Pain Scale, Analogue,Pain Scale, McGill,Pain Severities,Pain Test, Tourniquet,Questionnaire, McGill Pain,Scale, Analog Pain,Scale, Analogue Pain,Scale, McGill Pain,Severity, Pain,Test, Analgesia,Test, Formalin,Test, Nociception,Test, Tourniquet Pain,Tests, Nociception,Tourniquet Pain Tests
D010812 Physical Stimulation Act of eliciting a response from a person or organism through physical contact. Stimulation, Physical,Physical Stimulations,Stimulations, Physical
D003080 Cold Temperature An absence of warmth or heat or a temperature notably below an accustomed norm. Cold,Cold Temperatures,Temperature, Cold,Temperatures, Cold
D004311 Double-Blind Method A method of studying a drug or procedure in which both the subjects and investigators are kept unaware of who is actually getting which specific treatment. Double-Masked Study,Double-Blind Study,Double-Masked Method,Double Blind Method,Double Blind Study,Double Masked Method,Double Masked Study,Double-Blind Methods,Double-Blind Studies,Double-Masked Methods,Double-Masked Studies,Method, Double-Blind,Method, Double-Masked,Methods, Double-Blind,Methods, Double-Masked,Studies, Double-Blind,Studies, Double-Masked,Study, Double-Blind,Study, Double-Masked
D005260 Female Females
D005680 gamma-Aminobutyric Acid The most common inhibitory neurotransmitter in the central nervous system. 4-Aminobutyric Acid,GABA,4-Aminobutanoic Acid,Aminalon,Aminalone,Gammalon,Lithium GABA,gamma-Aminobutyric Acid, Calcium Salt (2:1),gamma-Aminobutyric Acid, Hydrochloride,gamma-Aminobutyric Acid, Monolithium Salt,gamma-Aminobutyric Acid, Monosodium Salt,gamma-Aminobutyric Acid, Zinc Salt (2:1),4 Aminobutanoic Acid,4 Aminobutyric Acid,Acid, Hydrochloride gamma-Aminobutyric,GABA, Lithium,Hydrochloride gamma-Aminobutyric Acid,gamma Aminobutyric Acid,gamma Aminobutyric Acid, Hydrochloride,gamma Aminobutyric Acid, Monolithium Salt,gamma Aminobutyric Acid, Monosodium Salt
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man

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