title: Biologic mechanisms of oral cancer pain and implications for clinical therapy.
abstract: Cancer pain is an ever-present public health concern. With innovations in treatment, cancer patients are surviving longer, but uncontrollable pain creates a poor quality of life for these patients. Oral cancer is unique in that it causes intense pain at the primary site and significantly impairs speech, swallowing, and masticatory functions. We propose that oral cancer pain has underlying biologic mechanisms that are generated within the cancer microenvironment. A comprehensive understanding of key mediators that control cross-talk between the cancer and peripheral nervous system, and possible interventions, underlies effective cancer pain management. The purpose of this review is to explore the current studies on oral cancer pain and their implications in clinical management for cancer pain in general. Furthermore, we will explore the endogenous opioid systems and novel cancer pain therapeutics that target these systems, which could solve the issue of opiate tolerance and improve quality of life in oral cancer patients.
authors.affiliation: Department of Oral Maxillofacial Surgery, New York University College of Dentistry, 421 First Avenue, 233W, New York, NY 10010, USA.
authors.forename: C T
authors.initials: CT
authors.lastname: Viet
authors.forename: B L
authors.initials: BL
authors.lastname: Schmidt
mesh_terms: D000701:Analgesics, Opioid / Q000494:pharmacology; D000818:Animals; D002294:Carcinoma, Squamous Cell / Q000150:complications / Q000503:physiopathology*; D004361:Drug Tolerance / Q000502:physiology; D019332:Endothelin-1 / Q000502:physiology; D005157:Facial Pain / Q000188:drug therapy / Q000209:etiology* / Q000503:physiopathology; D006801:Humans; D009062:Mouth Neoplasms / Q000150:complications / Q000503:physiopathology*; D020932:Nerve Growth Factor / Q000502:physiology; D009619:Nociceptors / Q000502:physiology; D018847:Opioid Peptides / Q000235:genetics / Q000502:physiology / Q000627:therapeutic use; D059408:Pain Management / Q000379:methods; D010148:Intractable Pain / Q000188:drug therapy / Q000209:etiology* / Q000503:physiopathology; D010166:Palliative Care; D011788:Quality of Life; D044462:Receptors, Proteinase-Activated / Q000502:physiology
chemical_list: D000701:Analgesics, Opioid; D019332:Endothelin-1; D018847:Opioid Peptides; D044462:Receptors, Proteinase-Activated; D020932:Nerve Growth Factor