Keratinization of fish skin with special reference to the catfish Bagarius bagarius

@article{Mittal2004KeratinizationOF,
  title={Keratinization of fish skin with special reference to the catfish Bagarius bagarius},
  author={Ajay Kumar Mittal and Mary Whitear},
  journal={Cell and Tissue Research},
  year={2004},
  volume={202},
  pages={213-230}
}
  • A. Mittal, M. Whitear
  • Published 1 November 1979
  • Biology, Environmental Science
  • Cell and Tissue Research
SummaryHistochemical reactions indicating keratinization have previously been demonstrated in parts of the epidermis of Bagarius bagarius. Fluorescence histochemistry and electron microscopy have now confirmed these results. Elevated areas of the epidermis are capped by a layer of dead cells with altered contents. On the outer aspect of these cells a dense layer, 18 nm thick, beneath the plasma membrane corresponds to the resistant envelope found in keratinized cells in tetrapod vertebrates. In… 
Keratinization of the epidermis of the Australian lungfish Neoceratodus forsteri (dipnoi)
TLDR
There was no immunolocalization of the keratin‐associated proteins, filaggrin and loricrin, which suggests that the epidermis of this species lacks the matrix and cell corneus envelope proteins characteristic of that of amniotes.
Immunocytochemical localization of keratins, associated proteins and uptake of histidine in the epidermis of fish and amphibians.
  • L. Alibardi
  • Biology, Environmental Science
    Acta histochemica
  • 2002
TLDR
Uptake of tritiated thymidine in newt epidermis indicated that keratinocytes move into the uppermost stratum intermedium within 4 days, and reach the replacement layer in approximately 6 days, which suggests that a cell corneous envelope containing this protein is not present or undetectable.
Cornification of the Beak of Rana dalmatina Tadpoles Suggests the Presence of Basic Keratin-Associated Proteins
TLDR
Two-dimensional electrophoretic analysis determined that most proteins of the beak are acidic to neutral keratins, however protein spots outside the keratin range were also isolated for the 1st time.
The Process of Cornification in the Horny Teeth of the Lamprey Involves Proteins in the Keratin Range and Other Keratin-Associated Proteins
TLDR
The low-molecular-weight basic proteins are likely associated with acidic keratins to produce the dense corneous material of the tooth, a process that also occurs in hard skin derivatives of other vertebrates.
Morphology of adhesive organ of the snow trout Schizothorax richardsonii (Gray, 1832)
TLDR
The morphology and fine structure of adhesive organ (AO) of the snow trout Schizothorax richardsonii appears that the callus part acts by creating vacuum first, while the tuberculated part of the AO epidermis assists in adhesion to the rocky substratum.
Structural organization of the toe pads in the amphibian Philautus annandalii (Boulenger, 1906)
TLDR
Ulastructural features suggest that toe pads utilize the surface microstructures for adhesion aided by mucus, in which the intermediate cell layer seems to bear the shear stress generated during locomotion.
Glycoproteins in the Epithelium of Lips and Associated Structures of a Hill Stream Fish Garra lamta (Cyprinidae, Cypriniformes): A Histochemical Investigation
TLDR
Elaboration of more than one type of GPs suggests a basis for functional discrimination in their role in the mucous secretions at the surface as an adaptation to the feeding ecology and the environment inhabited by the fish.
...
...

References

SHOWING 1-10 OF 47 REFERENCES
Epidermal keratinization in the salamander and a comparison with other amphibia
TLDR
The mature amphibian keratinocytes contained free fats, bound phospholipids, calcium and sulphydryl groups, together with acid phosphatase and non‐specific esterase, and the stratum corneum was one cell in depth, although in Xenopus it was up to three cells deep.
The histochemistry of keratinization.
TLDR
The article concludes with a theory that dendritic cells containing adenosine triphosphatase (ATP-ase) may augment the autolytic processes during keratinization and may also cause the inductive influence of the dermis on the epidermis.
Observations on skin structure and sloughing in the stone fish Synanceja verrucosa and related fish species as a functional adaptation to their mode of life
  • L. Fishelson
  • Environmental Science
    Zeitschrift für Zellforschung und Mikroskopische Anatomie
  • 2004
TLDR
The structure of the slough and outer epithelial layer resemble the “Oberhäutchen” described for squamate reptiles.
CELL JUNCTIONS IN AMPHIBIAN SKIN
TLDR
Interpreted in the light of current physiological data, these findings suggest that the diffusion of water, ions, and small, water-soluble molecules is impeded along the intercellular spaces of the epidermis by zonulae occludentes while it is facilitated from cell to cell within the epidesis by z onulae and maculae OccludENTes.
Structure of the integument of a fresh‐water teleost, Bagarius bagarius (Ham.) (Sisoridae, pisces)
The skin of Bagarius bagarius (Ham.) is devoid of scales but is rough due to the presence of numerous pentagonal epidermal elevations, which are separated by deep furrows at regular intervals. These
Electron microscopy of the skin of the teleost, Hippoglossoides elassodon
TLDR
The normal skin of the pleuronectid fish, Hippoglossoides elassodon, is described by light and electron microscopy and the majority of cells are squamous cells and the minority mucous cells.
Keratins and Keratinization
The workshop on keratin and keratinization began with a brief discussion of keratinocyte structure observed using recently advanced technical tools for ultrastructural investigations. Hiroyuki Suzuki
Horny cell formation in the epidermis of Rana pipiens
Well preserved transitional cells were found between differentiated cells and horny cells of the frog epidermis, thus facilitating the study of the sequential events involved in horny cell formation.
Structure of the toad epidermis during the moulting cycle
TLDR
It is concluded that the initial phase of keratinization in the toad is very rapid and with a high degree of synchrony, whereas the laying-down of interfibrillar, central dense matrix in the new stratum corneum takes up to 24 hours and is less synchronous.
...
...