Angioarchitecture and Morphology of Temporomandibular Joint of Monodelphis domestica

Autor(es)

Minucci, Matheus Silvestre ; Mardegan Issa, Joao Paulo ; Yokoyama, Fernando Yukio ; Dias, Fernando Jose ; Iyomasa, Daniela Mizusaki ; Del-Bel Belluz Guimaraes, Elaine Aparecida ; Watanabe, Ii-Sei ; Iyomasa, Mamie Mizusaki

• Tipo de documento: Artigo Científico
• Fonte: MICROSCOPY RESEARCH AND TECHNIQUE; v. 79, n. 9, p. 806-813, SEP 2016.
• Citações Web of Science: 0

Resumo

The opossum Monodelphis domestica presents movement of the temporomandibular joint (TMJ) reflecting adaptation to eating habits similar to movement in humans, but the structure of the TMJ is not yet known. Thus, nine young M. domestica, of both sexes were weighed, anesthetized with xylazine (10 mg kg(-1)), and ketamine (70 mg kg(-1)) and processed for: 1. The analyses of the macroscopic angioarchitecture after latex injection, as well as the topography of the TMJ; 2. The analysis of microvascularization after injection of Mercox resin and corrosion of soft tissue with NaOH using scanning electron microscopy and; 3. The histological evaluation of the TMJ with an optical microscope. Macroscopic analysis of the latex injected vessels revealed the distribution of the arteries from the common carotid artery, receiving branches of the superficial temporal and maxillary arteries. The mandibular condyle has the long axis in the lateral-lateral direction, and is convex in the anterior-posterior direction. Its topography was determined in relation to the eye and external acoustic meatus. With scanning electron microscopy, microvascularization consists of arterioles of varying diameter (85-15 mu m) of the meandering capillary network in the retrodiscal region, and a network of straight capillaries in the TMJ anterior region. Via light microscopy the TMJ has similar histological features to those of humans. These macroscopic, microscopic and ultrastructural data from TMJ of the M. domestica could be a suitable model for TMJ physiology and pathophysiology studies for then speculate on possible human studies. Microsc. Res. Tech. 79:806-813, 2016. (C) 2016 Wiley Periodicals, Inc. (AU)

• Processo FAPESP: 10/16501-0 - Angioarquitetura e Morfologia da Articulação Temporomandibular do Monodelphis domestica
• Beneficiário: Matheus Silvestre Minucci
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica