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Medline ® Abstract for Reference 183

of 'Overview of neurologic complications of non-platinum cancer chemotherapy'

Quantitative sensory findings in patients with bortezomib-induced pain.
Cata JP, Weng HR, Burton AW, Villareal H, Giralt S, Dougherty PM
J Pain. 2007;8(4):296. Epub 2006 Dec 15.
UNLABELLED: Bortezomib (PS-341) is a newly developed proteosome inhibitor that shows extremely promising antineoplastic effects against a variety of neoplasias. Neuropathic pain is emerging as a major complication of bortezomib. Although clinical reports have appeared in the literature describing the general symptoms of bortezomib chemoneuropathy, specific quantitative sensory data that detail the sensory deficits that might yield insight to the primary afferent dysfunction contributing to this pain is lacking. In this report, it is shown that patients with bortezomib-induced neuropathic pain have significantly elevated touch detection threshold and slotted peg board time, impaired sharpness detection, and elevated thresholds for the detection of skin warming and heat pain. Patients also had increased reports of cold pain. These data indicate that bortezomib-induced neuropathy is associated with deficits in Abeta, Adelta, and C caliber primary afferent fibers.
PERSPECTIVE: This work demonstrates that pain induced by the chemotherapy drug bortezomib is accompanied by dysfunction in all fiber types in sensory nerves. Impaired Abeta and C sensory function also extends into areas of skin that are not perceived as affected by pain.
Department of Anesthesiology and Pain Medicine, The University of Texas M.D. Anderson Cancer Center, Houston, Texas 77030, USA.