Study on elastic system fibers (ESFs) in the temporomandibular joint of the mouse.

Tsubai, Takayoshi

doi:10.2330/joralbiosci1965.33.534

Cited by 3 publications

(4 citation statements)

References 9 publications

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“…Furthermore, elastase digestion followed by RF was used to differentiate elaunin fibers from elastic and oxytalan fibers. Moreover, the distribution of oxytalan fibers was estimated by comparing the results of PRF and RAF staining with those of RF staining (Hanji 1973;Tsubai 1991). The present results of differential staining showed that oxytalan, elaunin and elastic fibers were found in all the articular components of the mandibular joint.…”

Section: Resultsmentioning

confidence: 99%

“…For LM, mandibular joints were dissected, fixed with 10% formalin and embedded in paraffin following the conventional methods. The samples were sectioned, stained by the Gomori aldehyde fuchsin (AF) method, Weigert resorcin fichsin (RF) method and preoxidation followed by aldehyde fuchsin (PAF) staining and resorcin fuchsin (PRF) staining (Hanji 1973;Tsubai 1991). For survey purposes, some sections were also stained with hematoxylin and eosin.…”

Section: Light Microscopy (Lm) and Quantitative Analysismentioning

confidence: 99%

“…Thus, various types of ESFs in defined areas on the display could be measured and counted, and the data were automatically recorded and subsequently quantitatively analyzed using the computer. Frontal sections of the middle portion of the mandibular joint are analyzed by computing the ESFs in a 1 mm2 area in specific 500 x 500 mm2 areas of the articular components (Tsubai 1991 Dell et al 1989). SEM was used for threedimensional examination of ESFs in the mandibular joint.…”

Section: Light Microscopy (Lm) and Quantitative Analysismentioning

confidence: 99%

“…Furthermore, the ESFs in the mandibular joint have been suggested to play a particularly important part in retrusive movement during mastication (Tsubai 1991). Although some scanning electron microscopic (SEM) studies have dealt with the three-dimensional configuration of collagen fibers in the mandibular joint, the ESF network in the joint was not mentioned in these studies (Takaku and Ozawa 1979;Taguchi 1980;Ozawa 1983;Yoshimoto 1985).…”

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Scanning Electron Microscopy of Elastic System Fibers in the Articular Disc of the Rat Mandibular Joint

Iwai-Liao

Ogita

Tsubai

et al. 1994

Okajimas Folia Anatomica Japonica

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Summary: Elastic system fibers (ESFs), i.e., microfibrils (putative oxytalan fibers), elaunin and elastic (true elastin) fibers, in the rat mandibular joint were studied mainly using scanning electron microscopy (SEM) and light microscopy (LM) with the aid of image processing. The present quantitative analysis using LM showed that the articular disc and capsule, which are the sites that receive physical compressive force during mastication, contained more ESFs than the articular cartilage of the mandibular joint. In addition, oxytalan fibers were the principal ESFs in all the articular components (capsule, articular disc, supraosseous layer of articular surfaces and articular cartilage). Subsequently, ESFs in the articular disc, which contained more thick ESFs, were closely examined by SEM using both collagen-and elastin-digestion methods. SEM showed networks of microfibrils beneath the articular surfaces (superior and inferior layers) in the thin central portion of the articular disc; the principal microfibrils ran at nearly right angles to the collagen fibers. The microfibrils were cemented with amorphous elastin, thickened and shifted towards interconnecting oblique fibers and many main ESF trunks, which were oriented in the direction of the layered wavy collagen fibers and parallel to the direction of applied force, to sustain the mechanical force. From the superior and inferior layers, the main ESFs shisfted towards the middle portion of the disc, transitional zone (synovial osteochondral junction) and the other articular components, showing no specific directivity. Transmission mission electron microscopy revealed that the thick main ESFs in the elastic network were elaunin fibers. The present study indicated that ESFs unite, branch and therefore construct an extensive and complicated protective stretchable network, which is interposed with the less tensible collagen network in the mandibular articular disc.Elastin system fibers (ESFs), which are usually differentiated as microfibrils (oxytalan fibers), elaunin and elastic fibers based on their staining properties and the distribution of the microfibrils and amorphous cementing elastin, play a particularly important role in the elasticity of connective tissue (CottaPereira,

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Section: Resultsmentioning

confidence: 99%

Section: Light Microscopy (Lm) and Quantitative Analysismentioning

confidence: 99%

Section: Light Microscopy (Lm) and Quantitative Analysismentioning

confidence: 99%

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confidence: 99%

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