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  1. Article ; Online: Death and Transformation of Larval Cells during Metamorphosis of Anura.

    Yoshizato, Katsutoshi

    Development, growth & differentiation

    2023  Volume 34, Issue 6, Page(s) 607–612

    Language English
    Publishing date 2023-06-06
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 280433-5
    ISSN 1440-169X ; 0012-1592
    ISSN (online) 1440-169X
    ISSN 0012-1592
    DOI 10.1111/j.1440-169X.1992.tb00028.x
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: EFFECT OF PROLACTIN ON THE TADPOLE TAIL FIN. V. STIMULATORY EFFECT OF PROLACTIN ON THE INCORPORATION OF

    Yoshizato, Katsutoshi / Yasumasu, Ikuo

    Development, growth & differentiation

    2023  Volume 14, Issue 2, Page(s) 129–132

    Abstract: DNA content of the tadpole tail fin was increased appreciably by the treatment of animals with bovine prolactin. Incorporation ... ...

    Abstract DNA content of the tadpole tail fin was increased appreciably by the treatment of animals with bovine prolactin. Incorporation of
    Language English
    Publishing date 2023-06-06
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 280433-5
    ISSN 1440-169X ; 0012-1592
    ISSN (online) 1440-169X
    ISSN 0012-1592
    DOI 10.1111/j.1440-169X.1972.00129.x
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: EFFECT OF PROLACTIN ON THE TADPOLE TAIL FIN. III. EFFECT OF PROLACTIN ON THE HYDROXYLATION OF PROTOCOLLAGEN-PROLINE OF THE TAIL FIN.

    Yoshizato, Katsutoshi / Yasumasu, Ikuo

    Development, growth & differentiation

    2023  Volume 14, Issue 1, Page(s) 57–62

    Abstract: The fact that bovine prolactin stimulates the collagen synthesis of the tadpole tail fin was confirmed by the present experiments, in which specific radioactivity ... ...

    Abstract The fact that bovine prolactin stimulates the collagen synthesis of the tadpole tail fin was confirmed by the present experiments, in which specific radioactivity of
    Language English
    Publishing date 2023-06-06
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 280433-5
    ISSN 1440-169X ; 0012-1592
    ISSN (online) 1440-169X
    ISSN 0012-1592
    DOI 10.1111/j.1440-169X.1972.00057.x
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Organ-Dependent Expression of Differentiated States in Fibroblasts Cultured in Vitro: (fibroblasts/collagen/organ-specificity/proliferation/fibronectin).

    Shimizu, Katsuhiko / Yoshizato, Katsutoshi

    Development, growth & differentiation

    2023  Volume 34, Issue 1, Page(s) 43–50

    Abstract: Mouse fibroblasts were obtained from three different organs (skin, lung and heart), cultured and investigated to know whether the fibroblasts express differentiated characters in an organ-dependent manner. Fibroblasts showed organ-dependent morphology at ...

    Abstract Mouse fibroblasts were obtained from three different organs (skin, lung and heart), cultured and investigated to know whether the fibroblasts express differentiated characters in an organ-dependent manner. Fibroblasts showed organ-dependent morphology at the confluent state. Fibroblasts were labeled with [
    Language English
    Publishing date 2023-06-06
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 280433-5
    ISSN 1440-169X ; 0012-1592
    ISSN (online) 1440-169X
    ISSN 0012-1592
    DOI 10.1111/j.1440-169X.1992.00043.x
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Involvement of Collagen Synthesis in Tissue Reconstitution by Dissociated Sponge Cells: (collagen/reconstitution/Porifera/collagen biosynthesis/invertebrate collagen).

    Shimizu, Katsuhiko / Yoshizato, Katsutoshi

    Development, growth & differentiation

    2023  Volume 35, Issue 3, Page(s) 293–300

    Abstract: Cells dissociated from the sponge Haliclona permollis reconstituted a new body by the following three consecutive processes: (1) Reaggregation, cells aggregate as a spheroidal mass. (2) Spreading, aggregates flatten and spread. (3) Reconstruction, ... ...

    Abstract Cells dissociated from the sponge Haliclona permollis reconstituted a new body by the following three consecutive processes: (1) Reaggregation, cells aggregate as a spheroidal mass. (2) Spreading, aggregates flatten and spread. (3) Reconstruction, aggregates coalesce into a reconstituted body. Cells in the process of reconstitution incorporated
    Language English
    Publishing date 2023-06-06
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 280433-5
    ISSN 1440-169X ; 0012-1592
    ISSN (online) 1440-169X
    ISSN 0012-1592
    DOI 10.1111/j.1440-169X.1993.00293.x
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: EFFECT OF PROLACTIN ON THE TADPOLE TAIL FIN. IV. EFFECT OF PROLACTIN ON THE METABOLIC FATE OF HYALURONIC ACID, COLLAGEN AND RNA WITH A SPECIAL REFERENCE TO CATABOLIC PROCESS.

    Yoshizato, Katsutoshi / Yasumasu, Ikuo

    Development, growth & differentiation

    2023  Volume 14, Issue 2, Page(s) 119–128

    Abstract: In the case of hyaluronic acid and collagen, treatment of tadpoles with bovine prolactin produced remarkable increase in the content of the two metabolites in the tail fin in accord with the stimulatory effect of the hormone on the incorporation of ... ...

    Abstract In the case of hyaluronic acid and collagen, treatment of tadpoles with bovine prolactin produced remarkable increase in the content of the two metabolites in the tail fin in accord with the stimulatory effect of the hormone on the incorporation of labeled precursors into hyaluronic acid and collagen. RNA content of the tissue was increased appreciably by the prolactin treatment, whereas the hormone had no effect on the incorporation of
    Language English
    Publishing date 2023-06-06
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 280433-5
    ISSN 1440-169X ; 0012-1592
    ISSN (online) 1440-169X
    ISSN 0012-1592
    DOI 10.1111/j.1440-169X.1972.00119.x
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Isolation and Characterization of Mesenchymal Cells from the Tail of Bullfrog Tadpoles*: (mesenchymal cells/macrophage/tadpole/metamorphosis/thyroid hormone).

    Yoshizato, Katsutoshi / Nishikawa, Akio

    Development, growth & differentiation

    2023  Volume 27, Issue 5, Page(s) 621–631

    Abstract: Mesenchymal cells were separated with the aid of EDTA, dispase, collagenase and hyaluronidase from tail fins of Rana catesbeiana tadpoles and were cultured to examine their morphology and response to thyroid hormone, which controls metamorphosis. The ... ...

    Abstract Mesenchymal cells were separated with the aid of EDTA, dispase, collagenase and hyaluronidase from tail fins of Rana catesbeiana tadpoles and were cultured to examine their morphology and response to thyroid hormone, which controls metamorphosis. The mensenchymal tissue consisted of two main types of cells, macrophage-like cells (M cells) and fibroblastic cells (F cells), distinguishable by their morphological and biochemical characteristics. M cells were preferentially located near the boundary between the mesenchyme and the epidermis. They were more adhesive to the plastic culture dishes than F cells. The M cells developed a bizarre rod-like branching process during one week of culture, which appeared to be identical to the process formed by mammalian macrophages undergoing clasmatosis. M cells cultured for more than one week tended to fuse together forming multinuclear giant cells. F cells were found uniformly in the tissue and were active in collagen biosynthesis. Thyroid hormone at a physiological concentration greatly reduced the life span of F cells, but did not reduce that of M cells.
    Language English
    Publishing date 2023-06-06
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 280433-5
    ISSN 1440-169X ; 0012-1592
    ISSN (online) 1440-169X
    ISSN 0012-1592
    DOI 10.1111/j.1440-169X.1985.00621.x
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Biochemical and Immunological Characterization of Collagenase in Tissues of Metamorphosing Bullfrog Tadpoles: (collagenase/bullfrog tadpole/thyroid hormone/metamorphosis/TIMP).

    Oofusa, Ken / Yoshizato, Katsutoshi

    Development, growth & differentiation

    2023  Volume 33, Issue 4, Page(s) 329–339

    Abstract: Tissue inhibitor of metalloproteinases (TIMP, a specific inhibitor of collagenase) was found to inhibit thyroid hormone-induced tail regression, suggesting the important role of collagenase in this process. Collagenase was purified from culture media of ... ...

    Abstract Tissue inhibitor of metalloproteinases (TIMP, a specific inhibitor of collagenase) was found to inhibit thyroid hormone-induced tail regression, suggesting the important role of collagenase in this process. Collagenase was purified from culture media of back skin of tadpole of bullfrog, Rana catesbeiana. Anti-tadpole collagenase polyclonal antisera were obtained against the purified enzyme. The antibody inhibited the activity of tadpole collagenase. The antisera reacted to tissues of adult bullfrogs, tadpoles of african clawed frog, Xenopus laevis, and adult newts, Cynopus pyrrhogaster, and also reacted to human fibroblast collagenase. Immunoblot analyses suggested that tadpole collagenase lacks the procollagenase which is generally found in mammalian collagenases. Intense immunological stains were observed for the tissues of thyroid hormone-treated tadpoles as compared to those of untreated animals. Thyroid hormone increased amounts of collagenase not only in epidermal layer but also in mesenchymal tissues including fibroblastic cells.
    Language English
    Publishing date 2023-06-06
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 280433-5
    ISSN 1440-169X ; 0012-1592
    ISSN (online) 1440-169X
    ISSN 0012-1592
    DOI 10.1111/j.1440-169X.1991.00329.x
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Actin Degradation in the Metamorphosing Bullfrog Tadpole Tail: (metamorphosis/muscle/actin/bullfrog tadpole/tail resorption).

    Yoshizato, Katsutoshi / Nakajima, Yumiko

    Development, growth & differentiation

    2023  Volume 24, Issue 6, Page(s) 553–562

    Abstract: Degradation of tail muscle proteins was investigated during metamorphosis of Rana catesbeiana, tadpole. Regressing tail muscle contained actomyosin which was comparable to that of non-regressing tail muscle in its physico-chemical character, althouth the ...

    Abstract Degradation of tail muscle proteins was investigated during metamorphosis of Rana catesbeiana, tadpole. Regressing tail muscle contained actomyosin which was comparable to that of non-regressing tail muscle in its physico-chemical character, althouth the actomyosin content of the former tissue decreased as compared to the latter. However, when muscle proteins were extracted in the SDS-containing medium (TSM) and analyzed by SDS-polyacrylamide gel electrophoresis, we found that the protein band corresponding to actin disappeared completely during the late climax stage of metamorphosis. Detailed studies on this phenomenon showed that the apparent absence of actin on SDS-polyacrylamide gel electrophoresis was dependent upon the metamorphic stages of the tadpoles investigated. When TSM extract from the premetamorphic tadpole tail muscles which contained actin was incubated with the same extract from tadpoles of the climax stage, actin derived from premetamorphic tadpole disappeared on gel electrophoresis, indicating that tail muscle tissues of the climax stages contain the actin-degrading enzyme. Characterization of the enzyme was performed with a crude extract using actin prepared from rabbit thigh muscle as a substrate. Actin degrading activity showed incubation time- and temperature-dependency and the activity decreased gradually when the extract was preheated at increasing temperatures with the complete inactivation at 100°C. The major degradation products of actin hydrolysis by the enzyme had a Mr=28,000 and 14,000 which indicated the enzyme splits actin at a specific point. The activity had an optimum pH of 7.5 and was inhibited by leupeptin and iodoacetate and required the presence of a thiol reagent.
    Language English
    Publishing date 2023-06-06
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 280433-5
    ISSN 1440-169X ; 0012-1592
    ISSN (online) 1440-169X
    ISSN 0012-1592
    DOI 10.1111/j.1440-169X.1982.00553.x
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: TISSUE DEGRADATION PATTERNS OF AMPHIBIAN TADPOLE TAIL: HISTOLOGICAL AND BIOCHEMICAL STUDIES.

    Yoshizato, Katsutoshi / Nakajima, Yumiko

    Development, growth & differentiation

    2023  Volume 22, Issue 3, Page(s) 579–588

    Abstract: The pattern of tissue degradation in the tadpole tail of the bullfrog, Rana catesbeiana, was studied histologically and biochemically. Tadpoles at four metamorphic stages (premetamorphic stage, stage XIII; prometamorphic stage, stage XVIII; early to ... ...

    Abstract The pattern of tissue degradation in the tadpole tail of the bullfrog, Rana catesbeiana, was studied histologically and biochemically. Tadpoles at four metamorphic stages (premetamorphic stage, stage XIII; prometamorphic stage, stage XVIII; early to middle climax stage, stage XXII; late climax stage, stage XXIII) were examined. In the histological study, tissues were stained by two different methods, i.e., Masson's trichrome stain and Van Gieson's stain. The results are summarized as follows: 1) Muscle tissues degenerated earlier thatn connective tissues; 2) Collagen density increased as tissue degraded; 3) At stage XXIII, degenerating and fragmented muscle tissues, surrounded by connective tissues, were seen, and 4) At the late climax stage, cell density was greatly increased as compared to preceding stages. The biochemical studies are summarized as follows; 1) The general catabolic pattern of tail proteins seems to differ between the premetamorphic and late climax stages; 2) The total hydroxyproline content per unit wet weight of the tail increased significantly at the late climax stage as compared to the premetamorphic stage, supporting the histological observations, and 3) Collagen degradation products were obtained at the late climax stage on Sephadex G-75 columns.
    Language English
    Publishing date 2023-06-06
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 280433-5
    ISSN 1440-169X ; 0012-1592
    ISSN (online) 1440-169X
    ISSN 0012-1592
    DOI 10.1111/j.1440-169X.1980.00579.x
    Database MEDical Literature Analysis and Retrieval System OnLINE

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