The fate of hypertrophic chondrocytes of the rat mandibular condyle in strontium rickets.

Saburi, Noriaki; Taguchi, Nozomu; Kaneda, Teruo; Hoshino, Takao

doi:10.2330/joralbiosci1965.29.244

Cited by 11 publications

(4 citation statements)

References 22 publications

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“…These cells were identified as osteocyte-like on the basis of the following ultrastructural features: they had large round heterochromatic nuclei and elongated cytoplasmic processes protruding into the calcified matrix, and thick periodical collagen fibrils were seen in the pericellular matrix. These findings are similar to those of cells transformed into osteocyte-like cells from hypertrophic cells of the rat mandibular condyle in strontium rickets as reported by SABURI et al (1987). The transformation of the chondrocytes into bone-related cells of mandibular cartilage has also been reported by many investigators FROMMER, 1972a, b, 1974;WEISS et al, 1986;YOSHIOKA and MAGI, 1988;STRAUSS et al, 1990).…”

Section: Discussionsupporting

confidence: 77%

“…There are many reports supporting the possibility of long-term survival for hypertrophic chondrocytes, including those in Meckel's cartilage FROMMER, 1972b, 1974;AKISAKA, 1982;FARNUM and WILSMAN, 1987;SABURI et al, 1987). HOLTROP (1972), andFARNUM andWILSMAN (1987) showed that hypertrophic chondrocytes are metabolically active cells that may play a significant role in endochondral ossification.…”

Section: Discussionmentioning

confidence: 99%

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Morphological Modifications During Long-Term Survival of Meckel's Cartilage Hypertrophic Chondrocytes Transplanted in the Mouse Spleen.

Ishizeki

Kuroda

Nagano

et al. 1992

Archives of Histology and Cytology

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Section: Discussionsupporting

confidence: 77%

Section: Discussionmentioning

confidence: 99%

Morphological Modifications During Long-Term Survival of Meckel's Cartilage Hypertrophic Chondrocytes Transplanted in the Mouse Spleen.

Ishizeki

Kuroda

Nagano

et al. 1992

Archives of Histology and Cytology

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“…This zone gradually merged into the so-called proliferating cell zone, which was a more cell-rich layer as previously reported (Saburi et al, 1987). The fibrous connective tissue layer on the articular surface of the TMJ has been found in humans (Thilander et al, 1976;Luder, 1998), monkeys (Klinge, 2001), pigs (Herring et al, 2002) and rats (Saburi et al, 1987). The fibrous connective tissue layer in the TD is, however, obviously thicker than that of other species, and the thickness of the layer is mostly consistent throughout the articular surface.…”

Section: Discussionmentioning

confidence: 50%

“…Furthermore, the surface layer of both the condyle and glenoid fossa comprised a layer of avascular, dense, thick fibrous connective tissue. This zone gradually merged into the so-called proliferating cell zone, which was a more cell-rich layer as previously reported (Saburi et al, 1987). The fibrous connective tissue layer on the articular surface of the TMJ has been found in humans (Thilander et al, 1976;Luder, 1998), monkeys (Klinge, 2001), pigs (Herring et al, 2002) and rats (Saburi et al, 1987).…”

Section: Discussionmentioning

confidence: 72%

Absence of the Articular Disc in the Tasmanian Devil Temporomandibular Joint

Hayashi

Sugisaki

Kino

et al. 2013

Anat Histol Embryol

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The articular disc of the temporomandibular joint is a constant structure in mammals. According to Parsons' report in 1900, however, it is absent in four animals: the armadillo, two kinds of monotremes and the Tasmanian devil. Thereafter, no research was performed to confirm this observation. The aim of this study was to determine by anatomical and histological examination whether the Tasmanian devil has an articular disc in its temporomandibular joint. Six fresh frozen corpses and one dry skull of Tasmanian devils were obtained from the School of Zoology, University of Tasmania. The corpses were dissected and the morphology of the temporomandibular joint was carefully observed by gross anatomical and histological examination. The structure of the temporomandibular joint of the dry skull was examined macroscopically and by micro-computed tomography. In all cases, absence of the articular disc in the Tasmanian devil temporomandibular joint was morphologically confirmed. The surface layer of both the condyle and the glenoid fossa comprised a thick fibrous tissue. Micro-computed tomography revealed dense and fine trabecular bone in the condyle. The thick fibrous tissue covering the condyle and high-density trabecular bone in the condyle might play a role in absorption against powerful mastication and heavy loading of the Tasmanian devil temporomandibular joint.

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Effect of compressive forces on extracellular matrix in rat mandibular condylar cartilage

Teramoto

Kaneko

Shibata

et al. 2003

Journal of Bone and Mineral Metabolism

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To reveal the effect of compressive force on the mandibular condylar cartilage, an appliance was set on 8-week-old Wistar rats to load continuous compressive force. Immunohistochemical and histochemical analyses were performed using toluidine blue, antibodies, and probes for aggrecan, hyaluronan, type II collagen, type X collagen, and 5-bromo-2"-deoxyuridine (BrdU). Histomorphometry and statistical analyses were also performed for aggrecan and BrdU immunostaining. In toluidine blue staining, tissue metachromasia was observed in the transitional zone and the hypertrophic zone of the mandibular condylar cartilage. In histomorphometry and statistical analysis, thickness of the cartilage decreased significantly in all regions in the 3-day experimental group. However, the thickness of the cartilage in the anterior region showed recovery while it decreased continuously in the posterior region. Distributional changes of aggrecan, hyaluronan, type II collagen, and type X collagen in the experimental groups were similar to those for toluidine blue staining. The immunostained area of all these molecules decreased as a result of the decrement of the cartilage area. However, enhanced immunostaining for aggrecan in the proliferative zone was observed only in the 1-day experimental group. BrdU-positive cells, observed in the proliferating zone and the transitional zone, decreased significantly in the experimental group 3 days after force was applied. These results demonstrate that continuous compressive forces on the mandibular condylar cartilage decrease the proliferation of chondrocytes and the amount of extracellular matrices.

show abstract

The fate of hypertrophic chondrocytes of the rat mandibular condyle in strontium rickets.

Cited by 11 publications

References 22 publications

Morphological Modifications During Long-Term Survival of Meckel's Cartilage Hypertrophic Chondrocytes Transplanted in the Mouse Spleen.

Morphological Modifications During Long-Term Survival of Meckel's Cartilage Hypertrophic Chondrocytes Transplanted in the Mouse Spleen.

Absence of the Articular Disc in the Tasmanian Devil Temporomandibular Joint

Effect of compressive forces on extracellular matrix in rat mandibular condylar cartilage

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