Library

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 11
    Electronic Resource
    Electronic Resource
    Effects of ascorbic and dehydroascorbic acid on the multiplication of tumor ascites cells in vitro (1984)
    Springer
    Journal of cancer research and clinical oncology 108 (1984), S. 230-232 
    Details
    ISSN: 1432-1335
    Keywords: Ascorbic acid ; Dehydroascorbic acid ; Ascites cells
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The effects of AA and DHA on ATP C+ cell multiplication in vitro were studied by measuring incorporation of 3H thymidine into DNA. The results obtained demonstrate that both AA and DHA have the same effects: they favor cell multiplication at low doses and inhibit it at high doses. Experiments carried out with serial doses of both these substances revealed that AA is more efficient in determining both stimulating and inhibiting effects. The lesser efficiency of DHA may be attributed to its limited stability in culture medium. Studies on the effect of high doses of AA and DHA added to the culture medium in single or fractionated doses revealed that fractionated administration is more efficient in inhibiting cell multiplication than single administration.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00402472
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 12
    Electronic Resource
    Electronic Resource
    Analysis of the age-related composition of human skin collagen and collagens synthesized by fibroblast culture (1994)
    Springer
    Archives of dermatological research 286 (1994), S. 391-395 
    Details
    ISSN: 1432-069X
    Keywords: Collagen metabolism ; Collagen donor aging ; Skin physiology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Age-related differences in the composition and the post-translational modifications of human skin collagens were examined in the present study. The data were compared with results of collagen synthesis from in vivo-aged fibroblasts in culture. Skin extracts and newly synthesized collagen from fibroblast cultures derived from both old and young donor groups showed the same ratio of collagen III to collagen I. Furthermore, no difference was noted in the degree of prolyl and lysyl hydroxylation of collagen I and collagen III. Young and old fibroblasts synthesized a similar quantity of collagen in vitro. The data suggest that fibroblasts maintain a uniform level of collagen production, composition and modification independent of the age of the donor.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00371799
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 13
    Electronic Resource
    Electronic Resource
    Book reviews (1979)
    Springer
    International urology and nephrology 11 (1979), S. 261-267 
    Details
    ISSN: 1573-2584
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02081968
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 14
    Electronic Resource
    Electronic Resource
    Extracellular glycosaminoglycans (GAG) released by chick embryonic fibroblasts (1984)
    Springer
    Cell & tissue research 238 (1984), S. 241-245 
    Details
    ISSN: 1432-0878
    Keywords: Glycosaminoglycans ; Fibroblasts ; Receptors ; Secretory cells ; Lectin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Administration of Concanavalin A (Con A) to cultured skin fibroblasts derived from chick embryos at two developmental stages produce variations in the relative concentration of individual glycosaminoglycan (GAG) secreted by the cells. This effect is different: at 7 days (increase of hyaluronic acid and dermatan sulphate and decrease of chondroitin sulphate) and at 14 days (dermatan sulphate is not detectable). All the cells bind the Con A specifically, but a different pattern of agglutination is present in fibroblasts of the two embryonic ages. Since Con A is well known to bind carbohydrate-containing surface proteins, the result suggests that the release of GAG by chick embryonic fibroblasts can be modulated by cell surface receptors.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00217295
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 15
    Electronic Resource
    Electronic Resource
    Involvement of Polyamines in the Action of Transforming Growth Factor β and Interleukin-1 on Cultured Chick Embryo Fibroblasts (1997)
    New York, NY [u.a.] : Wiley-Blackwell
    Cell Biochemistry and Function 15 (1997), S. 47-51 
    Details
    ISSN: 0263-6484
    Keywords: fibroblasts ; TGFβ ; IL-1 ; cell growth ; polyamines ; ODC ; Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: In this study we have examined the relationship between growth factor-induced proliferation and ODC/polyamine levels. TGFβ promotes cell growth and enhances [3H]-thymidine incorporation in chick embryo fibroblasts maintained in a serum-depleted medium. The action on DNA synthesis declines in the second day of treatment. IL-1 does not affect proliferation or [3H]-thymidine incorporation either when it is added alone or in combination with TGFβ. The response of the cells to TGFβ is associated with a significant stimulation of ODC activity and Put, Spd levels together with an enhancement of the Spd/polyamines ratio. IL-1, which does not act on cell proliferation, fails to activate ODC and to increase polyamine levels, thus indicating that the ODC/polyamine system is most likely to be an important link in the chain of events that leads to growth factor-induced proliferation. © 1997 John Wiley & Sons, Ltd.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
  • 16
    Electronic Resource
    Electronic Resource
    Production and characterization of monoclonal antibodies to the mammalian sperm cytoskeleton (1990)
    New York, NY [u.a.] : Wiley-Blackwell
    Molecular Reproduction and Development 25 (1990), S. 384-392 
    Details
    ISSN: 1040-452X
    Keywords: Immunofluorescence ; Immunoblotting ; Spermatozoa ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: The cytoskeleton exerts a direct effect on the function of sperm by influencing the distribution of subcellular organelles and plasma membrane molecules. We have prepared six monoclonal antibodies to Triton X-100-insoluble components of the bull sperm cytoskeleton. One of the antibodies reacts with a detachable portion of the bull sperm acrosome. The remainder include an antibody that recognizes the principal and end piece of the tail and another that is specific to the middle piece. Two of the antibodies yield dissimilar staining patterns of the neck region and the tail, and the final monoclonal antibody stains the subacrosomal region and a detachable acrosomal domain of bull sperm. The cross reactivities of the antibodies with hamster sperm and PtK2 cells are described, as is the recognition of bull sperm polypeptides on western blots. The results suggest that these antibodies will provide interesting insights concerning the role of the cytoskeleton in sperm development and function.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mrd.1080250412
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...