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3.
Med. oral patol. oral cir. bucal (Internet) ; 16(3): 348-353, mayo 2011. tab, ilus
Artigo em Inglês | IBECS | ID: ibc-93011

RESUMO

Objectives: To improve the existing animal models (mice, rats, and hamsters) for radiotherapy-induced oral mucositis(RTOM), thereby establishing a radiotherapy-induced glossitis (RTG) Sprague-Dawley (SD) rat model.Study Design: A lead device was designed to limit radiation exposure to a 1×1 cm2 area of a rat’s dorsal anteriortongue with a single 30Gy of X-ray radiation. The general conditions of the irradiated rats, such as body-weightand behavior, were observed. The oral mucositis index (OMI) of the RTG rats were measured daily. Histologicalchanges of the irradiated tongue tissues were assayed by H&E staining.Results and Conclusion: No significant changes were clinically observed 3 to 4 days after irradiation. At 5 to 6 day,punctuation and confluenced redness of the mucosa were observed. The small blood vessels became more extensive,engorged, thin vessel walls. More infiltrating cells were observable, necrosis and exfoliation of the squamouscells appeared, and the formation of an ulcerative lesion could be observed. Seven to 15 days, the exfoliated epitheliallayer was observed to have formed an ulcerative lesion, then aggravated ulcerative lesions consisting ofpseudomembranous filament exudates could be observed. The structure of the epithelium had become completelydisintegrated, forming deep, microscopic ulcerative lesions. Twenty-one days, the periphery of the ulcer wasobserved to have begun to heal, and granulation tissue could be observed at the bottom of the ulceration. At 35days after irradiation, the epithelial structure presented again, but the epithelium was very thin. An RTG animalmodel was successfully established in SD rats, which provides a new research platform for the study of RTOMpathogenesis (AU)


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Assuntos
Animais , Ratos , Glossite/fisiopatologia , Radioterapia/efeitos adversos , Estomatite/fisiopatologia , Lesões Experimentais por Radiação/fisiopatologia , Úlceras Orais/fisiopatologia , Modelos Animais
4.
Ann Otolaryngol Chir Cervicofac ; 124 Suppl 1: S56-67, 2007 Oct.
Artigo em Francês | MEDLINE | ID: mdl-18047866

RESUMO

Primary stomatodynia involves mainly women after menopause presenting somatization, depression and anxiety at values higher than control subjects. This chronic pain is often an intense burning pain beginning in the tongue the entire oral cavity, increasing in intensity through the day with a high level of emotional after effects. These patients often describe two associated symptoms: mouth dryness sensation and altered taste. The causes remain uncertain. The participation of female sexual hormones and neuropathic factors has been suggested possibly through a sensory neuropathy of small fibers of the oral mucosa. Normal clinical examinations and non clinical tests differentiate primary from secondary stomatodynia. The management consists in using low doses of topical clonazepam without swallowing or systemic clonazepam. The association of this drug with tricyclic antidepressants has given variable results. A cognitive behavioural management has been successfully attempted.


Assuntos
Dor Facial , Odontalgia , Diagnóstico Diferencial , Dor Facial/diagnóstico , Dor Facial/etiologia , Dor Facial/fisiopatologia , Gengivite/complicações , Gengivite/fisiopatologia , Glossite/complicações , Glossite/fisiopatologia , Humanos , Estomatite/complicações , Estomatite/fisiopatologia , Dente , Odontalgia/diagnóstico , Odontalgia/etiologia , Odontalgia/fisiopatologia
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