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Cutaneous silent periods are not affected by the antihistaminic drug cetirizine

Kofler, M. and Kumru, H. and Stetkarova, I. and Rüegg, S. and Fuhr, P. and Leis, A. A.. (2009) Cutaneous silent periods are not affected by the antihistaminic drug cetirizine. Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology, Vol. 120 , Iss. 5. pp. 1016-1019.

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Official URL: http://edoc.unibas.ch/dok/A6005060

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Abstract

OBJECTIVE: Noxious digital nerve stimulation leads to transient suppression of the electromyographic activity in isometrically contracted hand muscles, known as the "cutaneous silent period" (CSP). To date, neurotransmitters potentially involved in mediating this electromyographic (EMG) suppression remain unknown. Anecdotal observation lead to the hypothesis that antihistaminic medication may counteract nociceptive EMG suppression, as CSPs in one male subject who was accustomed to CSP recordings were temporarily lost following ingestion of an antihistaminic drug for acute rhinitis. A second otherwise healthy male subject, who was on long-term cetirizine for allergic rhinitis, presented without clearly defined CSPs when volunteering for normal values. METHODS: We undertook a systematic study in five healthy subjects (including the one with temporarily lost CSPs) who underwent serial CSP testing after ingestion of 10 mg cetirizine. CSPs were elicited in thenar muscles following digit II and digit V stimulation (20 times sensory threshold, 100 sweeps rectified and averaged) before and 90, 180, and 360 min following intake of medication. RESULTS: CSP onset latency, CSP end latency and CSP duration, as well as the index of suppression did not change significantly following ingestion of 10 mg cetirizine. Repeat study in the subject with no clearly defined CSPs on long-term treatment revealed persistently absent CSPs after a 5-week withdrawal from cetirizine. CONCLUSION: CSPs are not affected by therapeutic doses of the H1 antihistaminic cetirizine. SIGNIFICANCE: Our findings suggest that histamine plays no major role as a neurotransmitter of CSPs.
Faculties and Departments:03 Faculty of Medicine > Bereich Medizinische Fächer (Klinik) > Neurologie
03 Faculty of Medicine > Departement Klinische Forschung > Bereich Medizinische Fächer (Klinik) > Neurologie
UniBasel Contributors:Fuhr, Peter and Rüegg, Stephan
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Publisher:Elsevier
ISSN:1388-2457
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:01 Feb 2013 08:46
Deposited On:01 Feb 2013 08:45

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