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1.
Article in English | IMSEAR | ID: sea-140109

ABSTRACT

Background: Oral lichen planus (OLP) is a chronic inflammatory lesion in oral mucosa. Reticular (OLP-R) and erosive (OLP-E) types of OLP are the common forms that have been found in dental clinics. The aim of this investigation is to determine the correlation between neurogenic inflammation and nociception associated with OLP-R and OLP-E. Materials and Methods: The oral mucosal lesions from six patients with OLP-E, four with OLP-R and three with noninflamed oral mucosa, which represent normal mucosa, were identified by morphometric analysis of nerve fibers containing immunoreactive protein gene product (PGP) 9.5. The level of inflammation was measured with hematoxylin and eosin staining and the level of nociception was analyzed with visual analog scale measurement. Results: We found that 1) an increase in peripheral innervation was related to the size of the area of inflammatory cell infiltration from both OLP-R and OLP-E; 2) the pattern of PGP 9.5-immunoreactivity among OLP-R and OLP-E was not significantly different (P=0.23); and 3) the correlation between nociception and an increase in PGP 9.5-immunoreactivity was not found in OLP-E and in OLP-R. Conclusions: Our findings suggest that an increase in peripheral innervation may lead to increased inflammation, which is part of the immunopathogenesis of OLP. Differences in nociception between OLP-R and OLP-E arise from the pathogenesis of each lesion, not from the differences in peripheral innervation.


Subject(s)
Adult , Aged , Basement Membrane/innervation , Biomarkers/analysis , Biopsy , Connective Tissue/pathology , Epithelium/innervation , Humans , Lichen Planus, Oral/classification , Lichen Planus, Oral/pathology , Lymphocytes/pathology , Middle Aged , Mouth Mucosa/innervation , Nerve Fibers/pathology , Nerve Regeneration/physiology , Neuralgia/pathology , Nociceptive Pain/pathology , Pain Measurement , Ubiquitin Thiolesterase/analysis , Young Adult
2.
Int. j. morphol ; 24(3): 407-412, sept. 2006. ilus, graf
Article in English | LILACS | ID: lil-474604

ABSTRACT

El objetivo de esta investigación fue estudiar las fibras sensitivas mielinizadas y amielínicas localizadas en la lámina propia subepitelial de la mucosa lingual de ratas. Se usó el método de impregnación argéntica, microscopía MET y mediciones morfométricas. Los resultados revelaron que los fascículos de fibras subepiteliales de las regiones anterior, media y posterior de la lengua provenían de su capa muscular profunda. Los grupos de fibras fueron localizados dentro del tejido conectivo de la lámina propia. Estas fibras nerviosas se ramificaron varias veces y en el tejido conectivo de las papilas formaron terminaciones simples o ramificados. Las papilas fungiformes y valadas contenían numerosas terminaciones nerviosas. La ultraestructura demostró en el axoplasma la presencia de neurofilamentos, mitocondrias y microtúbulos; aunque los registros morfométricos de las fibras mielinizadas mostraron que alrededor del 44 por ciento tenían un diámetro entre 3 y 4 µm, el valor promedio fue de 4.5 µm. El diámetro mayor fue de 12 µm y el menor de 1.4 um. Los rangos de menores diámetros fueron de 1 a 3 µm, siendo el promedio de 2.33 µm. En relación al espesor de las vainas de mielina, los valores obtenidos fueron de 0.2 a 0.8 um siendo el valor promedio de alrededor de 0,5 µm, en el 90 por ciento de ellas. En las fibras amielínicas los mayores diámetros (62 por ciento) variaron entre 0.25 y 0.75 µm. El valor promedio fue de 0.6 µm, siendo el valor máximo 3.17 µm y el mínimo 0.2 µm. El menor diámetro fue obtenido en 44 por ciento de las fibras amielínicas y los rangos variaron entre 0.2 y 0.4 µm. El valor máximo obtenido fue de 1 µm y el mínimo 0.12 µm.


The purpose of this paper was to study the sensory myelinated and unmyelinated nerve fibers found in the subepithelial lamina propria of tongue mucosa of aging rats. It was used the silver impregnation, transmission electron microscopy methods and morphometric measurements. The results revealed that subepithelial nerve fiber bundles of the anterior, medium and posterior regions of tongue were arise from deep muscular layer of tongue. The nerve fiber bundles were verified inside of the connective tissue of lamina propria. These nerve fibers branched several times and into the connective tissue papillae they form a single or ramified sensory nerve endings. The fungiform and vallate papillae contain numerous nerve terminals. The fine structure demonstrated that in the axoplasm were noted the presence of neurofilaments, mitochondria and microtubules. Although the morphometric data of myelinated fibers showed that about 44% having larger diameter between 3 to 4 µm and the mean value was 4.5 µm. The largest diameter was 12 µm and the smaller was 1.4 um. The smallest diameter ranges from 1 to 3 µm, being that the mean value was 2.33 µm. Concerning to the thickness of myelin sheets were revealed the values ranging from 0.2 to 0.8 µm being that the 90% present the values around 0.5 µm. The unmyelinated fibers showed the largest diameter (62%) varying from 0.25 to 0.75 µm. The mean value was 0.6 µm being the maximum value was 3.17 µm and the minimum was 0.2 µm. The smallest diameter was obtained in 44% of unmyelinated fibers which the diameter ranges from 0.2 to 0.4 µm.Then maximum value obtained was 1 µm and the minimum was 0.12 µm.


Subject(s)
Animals , Child, Preschool , Rats , Mouth Mucosa/anatomy & histology , Mouth Mucosa/innervation , Nerve Fibers, Myelinated , Nerve Fibers, Unmyelinated , Aging/physiology , Rats/anatomy & histology , Rats/physiology
3.
In. Douglas, Carlos Roberto. Patofisiologia oral: fisiologia normal e patológica aplicada a odontologia e fonoaudiologia. Säo Paulo, Pancast, 1998. p.541-62, ilus, tab, graf. (BR).
Monography in Portuguese | LILACS, BBO | ID: lil-246775
4.
Odontoestomatol ; 3(3): 45-54, ago. 1990. ilus
Article in Spanish | LILACS | ID: lil-106690

ABSTRACT

Se realizó una revisión bibliográfica sobre la inervación de la mucosa bucal. Sobre una base dada por los textos clásicos y con el aporte de nuevos conceptos, se procuró dar una visión no muy extensa pero sí lo más completa posible, de la inervación sensitiva, vegetativa y gustativa de la mucosa bucal. Se hizo especial hincapié sobre el nervio trigémino, por su decisiva participación en la inervación de la mucosa, con referencias además, sobre el nervio facial y nervio glosofaríngeo, que también intervienen. Se insistió con el tratamiento esquemático de los nervios, despojándolos de datos anatómicos superfluos, para que pudieran servir de base clara para la posterior comprensión de la fisiología, la patología y la cirugía de la mucosa bucal


Subject(s)
Mouth Mucosa/innervation , Facial Nerve/anatomy & histology , Lingual Nerve/anatomy & histology , Mandibular Nerve/anatomy & histology , Maxillary Nerve/anatomy & histology , Glossopharyngeal Nerve/anatomy & histology , Trigeminal Nerve/anatomy & histology
5.
Arq. Centro Estud. Curso Odontol ; 21(1): 9-16, jan.-jun. 1984. ilus
Article in Portuguese | LILACS, BBO | ID: lil-143436

ABSTRACT

Os autores relatam, através do microscópio óptico, as diferentes formas de terminaçöes nervosas sub-epiteliais da mucosa do palato de cobaias. Para tanto, utilizou-se 15 cobaias adultas. As peças foram fixadas em soluçäo fixadora de "Castro" e incluídas em parafina rotineiramente. Cortes histológicos de 6-8 micrômetros foram analisados através do microscópio Zeiss


Subject(s)
Guinea Pigs , Mouth Mucosa/innervation , Mouth Mucosa/ultrastructure , Palate/innervation
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