Zur Morphologie der Epithelzellen der Säugetierniere

Zimmermann, K. W.

doi:10.1007/bf02978983

Cited by 66 publications

(31 citation statements)

References 3 publications

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“…However, the findings of Rhodin (1958aRhodin ( , 1958b tallied well with those of Zimmermann (1911),for he could distinguish, on the basis of the morphological characteristics of the cells lining the proximal convoluted tubule, only two main portions: a proximal part, representing the convoluted part in Zimmermann's (1911) classification or the first two parts in Sj8strand's (1944) classification, and a terminal part, corresponding to the "pars recta" noted qy Zimmermann (1911) or the third and fourth parts described qy SjtSstrand (1944). Rhodin (195&, 1958b), in his electron microscopie investigation of the mouse, rat, cat and human kidney, confirmed the earlier finding of Zimmermann ( 1911) tha t the cell borders in the terminal part of the proximal convolution are much more prominent and straight than in the proximal part and that they do not interdigitate. Indeed, prior to Zimmermann's (1911) Other distinguishing features of the terminal part of the proximal 74.…”

Section: Subdivision Of Nerhron Segments and Collecting Tubulesupporting

confidence: 53%

“…Rhodin (195&, 1958b), in his electron microscopie investigation of the mouse, rat, cat and human kidney, confirmed the earlier finding of Zimmermann ( 1911) tha t the cell borders in the terminal part of the proximal convolution are much more prominent and straight than in the proximal part and that they do not interdigitate. Indeed, prior to Zimmermann's (1911) Other distinguishing features of the terminal part of the proximal 74.…”

Section: Subdivision Of Nerhron Segments and Collecting Tubulementioning

confidence: 58%

“…Proximal Convoluted Tubule Zimmermann (1911), in his study of cat and dog kidney, subdivided the proxima.l convoluted tubule into two parts: a convoluted part and a more distal straight part ( or pars recta ) • More than a quarter of a centur,y later, Sj8strand (1944) made an extensive light-and fluorescent-microscopie investigation of the mouse kidney and noted structural differences in the lining epithelium of the proximal convolution which he subdivided into four successive segments. Using the electron microscope, Rhodin (19;8a, 73.…”

Section: Subdivision Of Nerhron Segments and Collecting Tubulementioning

confidence: 99%

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The cell web in epithelial cells of the rat kidney

Clermont

Pereira

1966

Anat. Rec.

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The “cell web,” a supporting fibrillar component of the cytoplasm was investigated in sections of adult rat kidney stained with the tannic acid‐phosphomolybdic acid‐amido black (TPA) technique. At the apex of all tubular epithelial cells and immediately below the brush border of microvilli, the cell web formed a thin layer of tightly knit fibrils which inserted on terminal bars, the latter following a straight or sinuous course in circumscribing the cell apices. On the lateral surfaces of all tubular cells, with the exception of those lining the first segment of the proximal convoluted tubule and the whole distal convoluted tubule, some TPA stained fibrils were seen running from the terminal bars toward the base of the cells. Lastly, at the base of all tubular cells, excepting those of the macula densa and the cortical and papillary collecting ducts, some coarse fibrils, oriented circularly around the tubule, were seen close to the basement membrane. Thus, in most tubular epithelial cells, cell web fibrils were found below the apical, lateral and basal cell surfaces, making up a framework for the support of the cytoplasm. Cell Web fibrils were also observed in the parietal and visceral epithelial cells of Bowman's capsule.

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Section: Subdivision Of Nerhron Segments and Collecting Tubulesupporting

confidence: 53%

Section: Subdivision Of Nerhron Segments and Collecting Tubulementioning

confidence: 58%

Section: Subdivision Of Nerhron Segments and Collecting Tubulementioning

confidence: 99%

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The cell web in epithelial cells of the rat kidney

Clermont

Pereira

1966

Anat. Rec.

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“…The basal striations in proximal and distal tubules are bounded by extensions of cell membranes. Heidenhain (1874), Zimmerman (1911), and Graaflin and Foote (1939) have described the cells as being deeply fluted in regions of the urinary tubules which possess basal striations. It appears, from the observations of the present study, that the basal striations develop by progressive fluting and interlocking of adjacent cells.…”

Section: Discussionmentioning

confidence: 99%

Cellular Differentiation in the Kidneys of Newborn Mice Studied With the Electron Microscope

Clark

1957

The Journal of Cell Biology

359

125

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Renal structure and function are incompletely developed at birth in a number of mammals, including the rat and man. Functional immaturity manifests itself as an inability on the part of the kidney to vary the volume and concentration of the urine (McCance, 1948). I n the rat, renal function matures during the first few weeks after birth (Falk, 1955). Detailed studies of the structural changes in kidneys of newborn animals have been confined largely to the rat.During the first few weeks after birth, the rat kidney grows as a result of the formation of new nephrons in the peripheral zone of the cortex (Kittelson, 1917;Arataki, 1926), and at the same time the cells of the kidney acquire their specific cytological characteristics. Stergios, in an unpublished thesis (1933), has described the development of the brush border in the proximal tubules and the formation of basal striations, the Stabchen of Heidenhain (1874), in proximal and distal tubules. At birth the proximal tubules possess a homogeneous cuticular border which acquires the appearance of a brush border during the first 2 weeks after birth. The basal striations develop during this time by a process of alignment of the mitochondria, which were randomly arranged at birth, into rows perpendicular to the basement membrane. Between 4 and 9 days after birth, the brush border and basal striations achieve a state of organization which renders them birefringent (Olivecrona and Hillarp, 1949). Coincident with the development of the brush border, the cells of the proximal tubules acquire the ability to stain intravitally with trypan blue (Baxter and Yoffey, 1948). The alkaline phosphatase reaction and the periodic acid-Schiff staining properties of the brush border continue to differentiate for several months after birth in the mouse (Longley and Fisher, 1956) Cytoplasmic droplets that stain with the periodic acid-Schiff technique occur in the proximal tubules of a variety of mammalian fetuses, including the rat and man (Davies, 1954). Their presence is associated with proteinuria, and both droplets and proteinuria disappear soon after birth in most animals. Similar droplets have been produced in the proximal tubules of adult rats by the administration of certain

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“…Between epitheloid and endothelial cells is seen the internal elastic membrane(elastic fiber type by Appelt, 1939). Also in the vicinity of vascular pole are present a mass of hypertrophied epitheloid cells without the internal elastic membrane, which seemingly belong to Polkissen type of Zimmermann(1933). Both types of the cells have been named" juxtaglomerular cells"(cf.…”

Section: Histological Proceduresmentioning

confidence: 99%