The fine structure of lamprey epidermis II. Club cells

Downing, Stephen W.; Novales, Ronald R.

doi:10.1016/s0022-5320(71)80159-4

Cited by 29 publications

(19 citation statements)

References 16 publications

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“…The nuclear morphology of club cells in P. lateristriga is in agreement with those found in non-Ostariophysi, as the lamprey species Ichthyomyzon bdellum (Jordan 1885) (cited as Ichthyomyzon unicuspis [42], in Cypriniformes [5], [8] and other Siluriformes [2], [4], [7], [9], [45], [46]. The nucleus is described as central, irregularly shaped, with peripheral condensed chromatin and prominent nucleoli.…”

Section: Discussionsupporting

confidence: 70%

“…The majority of studies involving ultrastructure of fish skin use high magnification micrographs, which make it difficult to identify these cell types [1], [9], [42]–[44].…”

Section: Discussionmentioning

confidence: 99%

“…However, in non-Ostariophysi such as eels and lampreys instead of regular fibrillar material, the cytoplasm showed spiral filaments arranged in bundles and oriented in different planes [1], [42]. In the peripheral region of the cytoplasm, next to the plasma membrane, large vacuoles could be seen in P. lateristriga , as well as demonstrated for Ictalurus punctatus [9], for the arrid Ariopsis felis [31] and for the non-Ostariophysi, such as eels [47].…”

Section: Discussionmentioning

confidence: 99%

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Morphology of the Epidermis of the Neotropical Catfish Pimelodella lateristriga (Lichtenstein, 1823) with Emphasis in Club Cells

Damasceno

Monteiro²,

Duboc³

et al. 2012

PLoS ONE

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The epidermis of Ostariophysi fish is composed of 4 main cell types: epidermal cells (or filament containing cells), mucous cells, granular cells and club cells. The morphological analysis of the epidermis of the catfish Pimelodella lateristriga revealed the presence of only two types of cells: epidermal and club cells. The latter were evident in the middle layer of the epidermis, being the largest cells within the epithelium. Few organelles were located in the perinuclear region, while the rest of the cytoplasm was filled with a non-vesicular fibrillar substance. Club cells contained two irregular nuclei with evident nucleoli and high compacted peripheral chromatin. Histochemical analysis detected prevalence of protein within the cytoplasm other than carbohydrates, which were absent. These characteristics are similar to those described to most Ostariophysi studied so far. On the other hand, the epidermal cells differ from what is found in the literature. The present study described three distinct types, as follows: superficial, abundant and dense cells. Differences among them were restricted to their cytoplasm and nucleus morphology. Mucous cells were found in all Ostariophysi studied so far, although they were absent in P. lateristriga, along with granular cells, also typical of other catfish epidermis. The preset study corroborates the observations on club cells' morphology in Siluriformes specimens, and shows important differences in epidermis composition and cell structure of P. lateristriga regarding the literature data.

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Section: Discussionsupporting

confidence: 70%

“…The majority of studies involving ultrastructure of fish skin use high magnification micrographs, which make it difficult to identify these cell types [1], [9], [42]–[44].…”

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Morphology of the Epidermis of the Neotropical Catfish Pimelodella lateristriga (Lichtenstein, 1823) with Emphasis in Club Cells

Damasceno

Monteiro²,

Duboc³

et al. 2012

PLoS ONE

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“…The enormous club cells found in the epidermis of lamprey are known to essentially consist of large bundles of filaments that are helically arranged and in a clockwise orientation spiral away from the cell periphery to the center of the cell. Although, at 7 nm, the determined diameter of an individual club cell filament is slightly smaller than that usually observed for IFs (8-10 nm), their substructure strongly resembles that observed for keratin filaments [51]. The function of the club cells is still largely unknown, but, among other hypotheses, it was postulated that they may contribute to the composition of the mucous, which in lamprey skin is mainly secreted from superficial epithelial cells (mucous cells do not exist in the lamprey epidermis).…”

Section: Expression Of Tkα and Tkγ In Lamprey Zebrafish And Xenopussupporting

confidence: 50%

Genes coding for intermediate filament proteins closely related to the hagfish “thread keratins (TK)” α and γ also exist in lamprey, teleosts and amphibians

Schaffeld

Schultess

2006

Experimental Cell Research

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“…marinus . Later on, structural and ultrastructural studies (Pfeiffer & Pletcher, ; Downing & Novales, 1971 a , b , c ) confirmed the presence of the three basic cell types of Ficalbi. Based on those studies, the club cells were renamed as skein cells by Lane & Whitear () because, according to these authors, they could no longer be considered homologous to the club cells of the teleostean epidermis.…”

Section: Introductionmentioning

confidence: 99%

Morphological and functional aspects of the epidermis of the sea lamprey Petromyzon marinus throughout development

Rodríguez-Alonso

Megı́as

Pombal

et al. 2017

Journal of Fish Biology

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The development of the epidermis of sea lamprey Petromyzon marinus along the whole life cycle was studied using conventional staining techniques and lectin histochemistry. The epidermis undergoes variations in morphology and thickness throughout development. The simple cuboidal epithelium found in the epidermis of prolarvae becomes stratified cubic in the adult by increasing the number of cell layers. The cuticle thickness undergoes a steady increase during the larval period. There are changes in the glycoconjugate composition of the three main cell types of the P. marinus epidermis, mucous, granular and skein cells, which are more pronounced after metamorphosis. The Alcian blue-periodic acid Schiff (AB-PAS) histochemical method shows the presence of both acidic and neutral glycoconjugates in the mucous cells, indicating their secretory function. Moreover, lectin analysis reveals a mucous secretion containing glycoconjugates such as sulphated glycosaminoglycans (N-acetylglucosamine and N-acetylgalactosamine) and N-glycoproteins rich in mannose. Although granular cells are AB-PAS negative, they exhibit a similar glycoconjugate composition to the mucous cells. Moreover, granular cells show sialic acid positivity in larvae but this monosaccharide residue is not detected after metamorphosis. The skein cells, a unique cell of lampreys, are negative to AB-PAS staining but they mostly contain l-fucose and sialic acid residues, which also disappear after metamorphosis. The function of the granular and skein cells is still unknown but the role of their glycoconjugate composition is discussed. In addition, a different cellular origin is suggested for these two types of cells.

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The fine structure of lamprey epidermis II. Club cells

Cited by 29 publications

References 16 publications

Morphology of the Epidermis of the Neotropical Catfish Pimelodella lateristriga (Lichtenstein, 1823) with Emphasis in Club Cells

Morphology of the Epidermis of the Neotropical Catfish Pimelodella lateristriga (Lichtenstein, 1823) with Emphasis in Club Cells

Genes coding for intermediate filament proteins closely related to the hagfish “thread keratins (TK)” α and γ also exist in lamprey, teleosts and amphibians

Morphological and functional aspects of the epidermis of the sea lamprey Petromyzon marinus throughout development

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