Elektronenmikroskopische Untersuchungen an spezifischen Organellen von Endothelzellen des Frosches (Rana temporaria)

Steinsiepe, Klaus F.; Weibel, Ewald R.

doi:10.1007/bf00335946

Cited by 40 publications

(10 citation statements)

References 49 publications

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“…3) of endothelial granules akin to those found in other endothelia (Steinsiepe & Weibel, 1970; Hughes &Wright, 1970). 2, fig.…”

Section: I)mentioning

confidence: 82%

“…2, fig. 3) of endothelial granules akin to those found in other endothelia (Steinsiepe & Weibel, 1970; Hughes &Wright, 1970). This observation suggests that the cells containing these granules differ from the pillar cells and are genuinely derived from endothelium; this being so it is possible that pillar cells may have arisen directly from mesenchyme, as discussed above.…”

Section: B Structure Of the Secondary Lamellaementioning

confidence: 82%

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The Structure of Fish Gills in Relation to Their Respiratory Function

1973

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Summary 1. The general structure of the gills of different fishes is compared and it is concluded that, though essentially the same, there are certain differences by which they can be recognized. Possible ways in which they may have evolved from one another are considered. 2. A detailed account is given of the structure of the secondary lamellae, where gaseous exchange takes place, and it is shown that two epithelial sheets are separated by a vascular axis mainly composed of pillar cells overlain by a basement membrane on each side. Blood pathways through the gills are discussed in relation to their respiratory function. 3. The embryonic development of gills is described and evidence regarding homo‐logies of different structures, particularly the pillar cells, is reviewed. 4. The gills of fish having different modes of life show variations in (a) the number of arches, (b) the number and length of the gill filaments, and (c) the size and frequency of the secondary lamellae. Ways in which measurements of gill area may be carried out and some of the complications involved are reviewed and a summary given of measurements made for a wide variety of species. Measurements of the thickness of the water‐blood barrier are also discussed; the more active fish generally have thinner water‐blood barriers and larger gill areas. 5. The different mechanisms of gill ventilation are summarized and characteristics of gill resistance in elasmobranchs and teleosts are compared. Gas exchange is discussed in relation to available techniques and the current terminology and symbols, and to indicate the value of analogies between gill exchangers and systems studied by engineers. 6. It is outlined how studies of the functioning of gills during coughing, parasitic infection, and in polluted waters add to knowledge of their role in respiration.

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“…3) of endothelial granules akin to those found in other endothelia (Steinsiepe & Weibel, 1970; Hughes &Wright, 1970). 2, fig.…”

Section: I)mentioning

confidence: 82%

Section: B Structure Of the Secondary Lamellaementioning

confidence: 82%

The Structure of Fish Gills in Relation to Their Respiratory Function

1973

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“…Since the first description of endothelial specific granules by Weibel and Palade (1964), the existence of similar cytoplasmic components in endothelial cells of various blood and lymphatic vessels has been described by many workers (Zelickson, 1964;Fuchs and Weibel, 1966;Kühnel, 1966;Fujimoto, 1967;Oehmke, 1968;Burri and Weibel, 1968;Piezzi et al, 1969;Lemeunier et al, 1969;Bertini and Santolaya, 1970;Matsuda and Sugiura, 1970;Steinsiepe and Weibel, 1970;Tabuchi and Yamamoto, 1974).…”

mentioning

confidence: 98%

Degranulation of endothelial specific granules of the toad aorta after treatment with compound 48/80

Fujimoto

1982

Anat. Rec.

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Incubation of isolated toad aortas in Ringer solution containing compound 48/80, a histamine liberator, resulted in marked degranulation of endothelial specific granules. Since incubation of these vessels in Ringer solution only did not show significant morphologic changes in these granules, these findings suggest that the degranulation was induced by histamine release from the granules, as in the case for mast cell degranulation, and that endothelial specific granules are a storage site of histamine in the toad aorta. The present morphologic data were supported by preliminary chromatography, which showed appreciable concentrations of histamine in the granule-containing pellets of subcellular fractions of homogenized toad aortas.

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“…Rhodin [1968] prop osed the name specific endothelial granule. The number of Weibel-Palade bodies is related with the vessel diameter [Steinsieppe and Weibel, 1970]. Three types of organelle have been reported in the capillaries of a renal carcinoma metastasis in the human brain [Kawamura et al, 1974], Type I was dense and fibrillar and corresponded to Weibel-Palade bodies.…”

Section: Discussionmentioning

confidence: 99%

Specific Endothelial Granules in Venous Patch Neoendothelium in the Rat

Cuevas¹,

Diaz

Reimers³

1982

Cells Tissues Organs

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Weibel-Palade bodies were observed in the neoendothelium and capillaries of vasa vasorum of autologous ‘venous patches’ grafted in the common carotid artery of the rat. These corpuscules varied in number and distribution but were most frequently found in the luminal area of endothelial cytoplasm. In venous patch neoendothelium, the shape, size and substructure of Weibel-Palade bodies were similar to those in other types of vascular endothelium. These specific endothelial granules were more numerous during the week following neoendothelium formation. It is proposed that these corpuscules may play a role in the proliferation of endothelial cells in venous patches.

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Elektronenmikroskopische Untersuchungen an spezifischen Organellen von Endothelzellen des Frosches (Rana temporaria)

Cited by 40 publications

References 49 publications

The Structure of Fish Gills in Relation to Their Respiratory Function

The Structure of Fish Gills in Relation to Their Respiratory Function

Degranulation of endothelial specific granules of the toad aorta after treatment with compound 48/80

Specific Endothelial Granules in Venous Patch Neoendothelium in the Rat

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