Etude ultrastructurale, chez un poisson téléostéen l'anguille (Anguilla anguilla L.), des processus de minéralisation dans les cas d'une ossification périchondrale de l'arc branchial et d'une apposition secondaire dans l'os vertébral

Lopez, Évelyne; Baud, C A; Boivin, Georges; Lallier, F.

doi:10.1051/rnd:19780113

Cited by 13 publications

(11 citation statements)

References 7 publications

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“…Electron probe microanalysis and electron diffraction are now being used to determine the maturation sequence of the mineral phase with respect to some of the facets of its location within the demirays. From the present work, no apparent association exists between the mineral phase and extracellular vesicles found in distal fin bud regions, a result different from that described during calcification of epiphyseal growth plate cartilage in many species (Anderson, 1976;Anderson et al, 1970;Bonucci and Dearden, 1976) and during primary membranous ossification of the gill arch in the eel (Lopez et al, 1978). Indeed, in addition to the absence of dense needles or rods within vesicles as reported in epiphyseal cartilage and the gill arch, those extracellular vesicles that are observed in the fin bud of S. gairdneri are also dissimilar in size, shape, and electron density to the cellular projections found in rat predentin (Bernard, 1972) and to the membrane-bound extracellular structures reported during tooth development of the killifish (Yamada and Ozawa, 1978).…”

Section: Bone Formationcontrasting

confidence: 68%

The fine structure of the developing pelvic fin dermal skeleton in the trout Salmo gairdneri

Géraudie

Landis

1982

Am. J. Anat.

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The morphogenetic and ultrastructural features of the dermal skeleton in the pelvic fin bud of a teleost, the rainbow trout Salmo gairdneri, have been examined by light and electron microscopy. The principal structural components observed are lepidotrichia and actinotrichia. Lepidotrichia consist of two parallel and symmetrical bony demirays that form jointed segments within the fin. The demirays calcify in a proximodistal direction within the extracellular collagen network of the basal lamella belonging to the epidermal-dermal interface of the fin. Needle- and plate-like particles of a solid mineral phase appear to be associated with the collagen fibrils and with a fine, granular, interfibrillar material central to the demirays. Cellular processes and membrane-bound vesicles are absent from the regions of calcification. During fin growth, the bony, acellular lepidotrichia are separated from the epidermal-dermal interface by infiltrating mesenchymal cells in proximal fin regions; in distal areas, the lepidotrichia remain within the basal lamella. The actinotrichia are extensive unmineralized rods of elastoidin that occupy the distal margin of the fin and precede the differentiation of lepidotrichia. Once the lepidotrichia form, actinotrichia lie preferentially between their demirays. In some instances, structural interactions are suggested between actinotrichia and lepidotrichia. Considerations of embryologic and structural features of fin components fail to support the hypothesis that individual segments of lepidotrichia are modified scales in all fish.

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Section: Bone Formationcontrasting

confidence: 68%

The fine structure of the developing pelvic fin dermal skeleton in the trout Salmo gairdneri

Géraudie

Landis

1982

Am. J. Anat.

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“…5). Lopez et al [19] also reported similar findings in the eel, Anguilla anguilla, during perichondral ossification of the gill arch and secondary accretion in the vertebral bone. These dense bodies are slightly smaller (430-810 .~) than the average matrix vesicles in mammalian bone.…”

Section: Osteogenesis Of Celhdar Attd Acelhtlar Fish Bonementioning

confidence: 53%

“…However, there are no studies which examine the ultrastructure of fish bone except the work by Lopez et al [19] on eels. Observation of the cellular bone of Carassius auratus indicates it to be similar in cell types and structure to normal mammalian bone.…”

Section: Osteogenesis Of Celhdar Attd Acelhtlar Fish Bonementioning

confidence: 99%

Studies on the biology of fish bone. III. Ultrastructure of osteogenesis and resorption in osteocytic (cellular) and anosteocytic (acellular) bones

1979

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The comparative ultrastructure of fish bone osteogenesis and resorption induced by scale removal was described in the osteocytic (cellular-boned) Carassius auratus and the anosteocytic (acellular-boned) Tilapia macrocephala. Osteocytes, present in osteocytic bone, were lacking in anosteocytic bone. In osteocytic bone the osteoblast secreted a collagenous preosseous matrix in which it became enmeshed and then was termed a preosteocyte. When the preosseous matrix mineralized, the preosteocyte was termed an osteocyte and was completely surrounded by bone. In anosteocytic bone the osteoblasts receded from the mineralizing front and never became trapped as osteocytes. During resorption, types A and B resorptive cells, present in both bone types, invaded the matrix and demineralized the osseous zone. These cells were characterized by large amounts of granular endoplasmic reticulum and intracellular inclusions containing crystal-like material. Although functionally similar to mammalian osteoclasts, these cells lacked a characteristic ruffled border and were not multinucleated. The osteocytes of cellular bone did not appear to be involved during demineralization.

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“…We have not been able to distinguish the two stages of osteoblasts described by Lopez et al (1978) during perichondral ossification of the branchial arches in the eel (AnguzEla anguilla). From the electron micrographs presented by Lopez et al (1978), it would appear that the mineralization front is very broad. This, along with the fact that the bone they describe is cellular (and their second type of osteoblasts already partially embedded in osteoid) can account for the differences between our observations and those of Lopez et al (1978).…”

Section: Formation Of Perichondral Bonementioning

confidence: 88%

Development of cartilage and bone tissues of the anterior part of the mandible in cichlid fish: A light and TEM study

Huysseune

Sire

1992

Anat. Rec.

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The present paper presents ultrastructural details of chondrogenesis of Meckel's cartilage and of ossification of its associated peri- and parachondral bones in a teleost fish, the cichlid Hemichromis bimaculatus. We have distinguished four stages during chondrogenesis, each of which is characterized by specific cellular and matrix features: blastema, primordium, differentiated cartilage and cartilage surrounded by perichondral bone. The blastema is characterized by prechondroblasts and the lack of cartilage matrix; the primordium by chondroblasts and the onset of secretion of matrix of fibrillar and granular nature; differentiated cartilage is characterized by chondrocytes and larger amounts of typical hyaline cartilage matrix. Once perichondral bone is laid down, the chondrocytes show degenerative features but not true hypertrophy. Differentiation of the cartilage cells is attended with cytoplasmic changes indicative of an increasing secretory activity. There is a regional calcification of the cartilage matrix by fusion of calcospherites. Chondrogenesis of the symphyseal area is continuous with that of the rami but starts slightly later. Formation of perichondral bone at the cartilage surface is attended with the deposition of a transitional zone apparently containing a mixture of the two matrices. The role of the perichondral cells is discussed and it is proposed that they may contribute to the formation of the two matrices. The transitional zone may then result either from a diffusion process or from the simultaneous deposition of elements of the two matrices. Growth of the cartilage is argued to be largely the result of matrix secretion, except in the symphyseal area where appositional growth probably occurs until the region is completely covered by perichondral bone. This paper provides a basis for further studies on the developmental interactions between cartilage, bone and teeth during mandibular development in cichlids.

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Etude ultrastructurale, chez un poisson téléostéen l'anguille (Anguilla anguilla L.), des processus de minéralisation dans les cas d'une ossification périchondrale de l'arc branchial et d'une apposition secondaire dans l'os vertébral

Abstract: Summary. Ultrastructural

Cited by 13 publications

References 7 publications

The fine structure of the developing pelvic fin dermal skeleton in the trout Salmo gairdneri

The fine structure of the developing pelvic fin dermal skeleton in the trout Salmo gairdneri

Studies on the biology of fish bone. III. Ultrastructure of osteogenesis and resorption in osteocytic (cellular) and anosteocytic (acellular) bones

Development of cartilage and bone tissues of the anterior part of the mandible in cichlid fish: A light and TEM study

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