BACKGROUND AND OBJECTIVES: Inflammation is a defense response of the body to a cellular damage caused by physical, chemical or biological agents, which triggers, among other factors, pain. Although inflammation plays an important role in the protection and regeneration of tissue injury, inflammatory pain results in decreased quality of life. In view of this, the development of safe and less invasive forms for the treatment of inflammatory pain is of great importance. The objective of this study was to evaluate the antihyperalgesic potential of the culture supernatant of keratinocytes and human fibroblasts in an experimental model of inflammatory hyperalgesia. METHODS: Evaluation of carrageenan induced inflammatory hyperalgesia through the use of electronic von Frey in animal models treated with culture supernatant of keratinocytes and fibroblasts. RESULTS: Local administration of naloxone, a nonselective opioid antagonist, in peripheral tissue, has been observed to inhibit the antihyperalgesic effect of the keratinocyte culture supernatant. Fibroblast culture supernatant on days 1 and 3 reverses for 2 hours the carrageenan induced inflammatory hyperalgesia, which is mediated by µ opioid agonist. CONCLUSION: This study indicates that culture supernatant of fibroblasts and keratinocytes is capable of inducing antinociception in inflammatory hyperalgesia, mediated by the release of Evaluation of the keratinocytes or fibroblasts culture supernatant in an inflammatory hyperalgesia model Avaliação do sobrenadante da cultura de queratinócitos ou fibroblastos em modelo de hiperalgesia inflamatória

Sympathetic blocks have been indicated for the diagnosis and treatment of painful neuropathic conditions, such as herpes zoster (HZ) and postherpetic neuralgia (PHN). The purpose of this article is to report a case of mandibular HZ and PHN in an HIV-positive patient, and discuss the efficacy of sympathetic nerve blocks for pain relief and prevention of PHN.

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BackgroundOrofacial pain (OFP) is an undesirable sensation frequently associated with head and neck cancer (HNC) and its treatment. OFP negatively impacts the quality of life of oncological patients. The approach to OFP diagnosis and management can differ if the patient visits a dentist or physician. The aim of this study was to present a case series of HNC with OFP managed by a dentist team and to discuss its role in the management of OFP.Material and MethodsWe recruited twenty-two adult patients with OFP and previous diagnosis of HNC referred to an academic dental clinic from 2015 to 2017.ResultsNociceptive was more frequent than mixed and neuropathic pain, however 54,4% of the cases showed a neurological component. All types of pain were managed by dentist through removal of pain’s cause and appropriated local and systemic treatment. The intensity of pain was reduced in 86,3% of patients, and 45,4% of them reported absence of pain at the end of treatment.ConclusionsDentist’s assessment plays a distinct and crucial role in the diagnosis and management of OFP in HNC patients throughout the oncological treatment. Key words:Pain, orofacial, neoplasm, head and neck, dentist.

Objetivo: Relatar a conduta semiológica de três casos clínicos de dor orofacial em pacientes com câncer de cabeça e pescoço e descrever a abordagem terapêutica utilizada, discutindo a escada analgésica da Organização Mundial de Saúde (OMS). Material e Métodos: Este estudo relata três casos clínicos que foram encaminhados para tratamento odontológico por um hospital referência em câncer. Os dados foram obtidos a partir dos prontuários e um anexo de disfunção temporomandibular (DTM). A intensidade da dor foi obtida através da escala visual analógica (EVA). Resultados: A dor foi a queixa mais relatada nos três pacientes do gênero masculino e acometidos por carcinoma de células escamosas de cabeça e pescoço. Após o diagnóstico e tratamento da dor oncológica, houve redução da sua intensidade e da medicação utilizada. Conclusão: Pelo diagnóstico preciso e individualizado da dor orofacial, é possível aplicar cuidados curativos e paliativos reduzindo a intensidade da dor, número de queixas e quantidade de medicação.Descritores: Neoplasias - Diagnóstico. Dor facial. Percepção da dor. Relato de casos.