Distribution of Elastic System Fibers in Hyaline and Fibrous Cartilages of the Rat

Cotta-Pereira, Gerson; Lm, Del-Caro; Gs, Montes

doi:10.1159/000145865

Cited by 33 publications

(25 citation statements)

References 11 publications

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“…12). Furthermore, microfibrils and their integral component, fibrillin, appear to be considerably accumulated in the perichondrium (Cotta-Pereira et al, 1984;Fig. 6.…”

Section: Discussionmentioning

confidence: 99%

Subectodermal microfibrillar bundles are organized into a distinct parallel array in the developing chick limb bud

et al. 2004

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In this study, a unique fiber system in the subectodermal mesenchyme of the chick limb bud was visualized immunohistochemically with the use of a novel monoclonal antibody termed "FB1." This antibody stained a subset of extracellular fibers in the embryonic mesenchyme. Among the fibers visualized, those running perpendicularly to the limb bud ectoderm became progressively prominent in their thickness and length, and organized into a parallel array in the subectodermal region. This fiber system was distinct from that of major collagens, fibronectin, or tenascin. A molecule immunoprecipitated with FB1 comigrated with JB3 antigen, or chicken fibrillin-2. The fibers visualized immunohistochemically by FB1 and JB3 were indistinguishable from each other, and ultrastructurally appeared to be bundles composed of tubular-like microfibrils that originated directly from the ectodermal basal lamina. They lacked the amorphous deposits that are characteristic of elastin. A similar array of subectodermal fibers was also found in the developing axilla and some truncal regions, again well before the development of a definitive dermis. These findings suggest that a parallel array of subectodermal FB1-positive fibers constitutes a precocious fiber system in the presumptive dermis prior to the substantial formation of collagenous fibers. These fibers could be developmentally linked to oxytalan fibers, which are known to be present in the papillary dermis in mature cutaneous tissue.

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“…12). Furthermore, microfibrils and their integral component, fibrillin, appear to be considerably accumulated in the perichondrium (Cotta-Pereira et al, 1984;Fig. 6.…”

Section: Discussionmentioning

confidence: 99%

Subectodermal microfibrillar bundles are organized into a distinct parallel array in the developing chick limb bud

et al. 2004

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“…In the above-mentioned paper Montes et al [1984) reported that no elastic fibers could be detected by light or electron microscopy in connective tissue sheaths of the nerves studied; however, two elastic-related fibers, oxytalan and elaunin. were found to be contained in the nerves.…”

Section: Introductionmentioning

confidence: 87%

“…Although the presence of oxytalan fibers in the epi-and perineurium was reported by Fullmer as long ago as 1958. it was not until very recently [Montes et al, 1984] that an investigation of the presence of elastic system fibers in nerves (using a combination of the selective staining methods of light microscopy and the ultrastructural obser vation after tannic acid-glutaraldehyde fixation) was per formed. In the above-mentioned paper Montes et al [1984) reported that no elastic fibers could be detected by light or electron microscopy in connective tissue sheaths of the nerves studied; however, two elastic-related fibers, oxytalan and elaunin.…”

Section: Introductionmentioning

confidence: 99%

Distribution of Elastic System Fibers in the Peripheral Nerves of Mammals

Ferreira¹,

Caldini²,

Montes³

1987

Cells Tissues Organs

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Various nerves of 6 representative species of mammals (including the human) were studied by the comparative association of the selective staining methods of light microscopy with the ultrastructural observation after tannic acid-glutaraldehyde fixation, which provided a reliable means of characterizing the different elastic system fibers. Although mature elastic fibers are not present in nerves, elastic-related fibers are frequently observed: oxytalan fibers are found mainly in the endoneurium, whereas elaunin fibers predominate in the epineurium. These fibers are longitudinally disposed, in a parallel orientation to the axons. The fact that these findings were consistently observed in the nerves of all species studied argues strongly in favor of the existence of a uniform structural pattern of distribution of elastic system fibers in nerves as a general phenomenon in mammals.

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“…Moreover, the mature elastic fibers (elastin), become responsible for elasticity and elastic retreat of the VUJ, and in turn, elaunin fibers assume the intermediary role between oxytalan and mature fibers, providing functional adaptation to VUJ, as previously described by Cotta-Pereira et al (1977, 1984 studying the skin, so the function of an elastic fiber complements the action of another and form in VUJ, a microfibril-elastin system, as already described by Ushiki, working as a distributor of uniform tension forces in the tissue, maintaining tissue resilience and adapting the site for urine flow.…”

Section: Discussionmentioning

confidence: 71%

Fibroelastic Components of the Vesicourethral Junction of Rats in the Aging Process

Reisdoerferer¹,

Pereira²,

Chopard³

2011

Int. J. Morphol.

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SUMMARY:The vesicourethral junction comprising the vesical trigone, is relevant in setting and positioning of the urinary bladder, along with the vesical neck, fixed by lateral ligaments of the bladder and tendinous arch of the pelvis fascia. Namely, the puboprostatic ligament (men) and the pubovesical (women). The circular set elastic fibers in this junction are important and valuable in the elasticity and plasticity of the area, allowing quick expansion and withdrawal with the flow of urine, and associated to smooth muscle tissue and nerve control form an important collective to maintain urinary continence. The objective of the present study is to describe the elastic system in the vesicouretral junction in relation to aging and its involvement in the states of urinary continence and incontinence, as well as the study of the vesicouretral junction in various age groups while evaluating with electron transmission microscopy. To carry out the study, 12 Wistar rats were used, divided into groups: neonate (4 animals), adult group (4 animals) and aged group (4 animals). Electron transmission microscopy with use of tanic acid technique associated to glutaraldehyde fixation, satisfactorily showed the extreme structural differences between mature elaunin and oxytalan fibers present between intercelular spaces and bundles of collagen fibers. The phases of elastogenesis in neonate animals and degradation of the elastic system of older animals were also evaluated.

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Distribution of Elastic System Fibers in Hyaline and Fibrous Cartilages of the Rat

Cited by 33 publications

References 11 publications

Subectodermal microfibrillar bundles are organized into a distinct parallel array in the developing chick limb bud

Subectodermal microfibrillar bundles are organized into a distinct parallel array in the developing chick limb bud

Distribution of Elastic System Fibers in the Peripheral Nerves of Mammals

Fibroelastic Components of the Vesicourethral Junction of Rats in the Aging Process

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