Library

feed icon rss

Your email was sent successfully. Check your inbox.

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

Proceed reservation?

Export
  • 1
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    ISSN: 1432-069X
    Keywords: Human skin epithelium cells ; Regulation of proliferation ; Gene regulation ; Cell mediators ; Nonhistone proteins ; Psoriatic scales ; Menschliche Hautepithelzellen ; Regulation der Zellproliferation ; Mediatoren ; Genregulation ; Nicht-Histon-Proteine ; Psoriasisschuppen
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung “Human skin epithelium cells” (NCTC strain 2544; HuSki-Epicell) ist ein permanenter Zellstamm, der im Monolayer wie Epithelzellen Desmosomen ausbildet. Exogene Zugabe von proliferativ bzw. antiproliferativ wirkenden Zellregulatoren beeinflußt dosisabhängig das Wachstum der Zellkultur in typischer Weise: Steroide hemmen die Zellteilung, Polyamine die Proliferation, während Prostaglandin E2, Theophyllin und Papaverin das Wachstum bremsen. Da das Muster chromosomaler Nicht-Histon-Proteine die Veränderungen von Genaktivitäten anzeigen, wurden DNA-affine Proteine der HuSkiEpicell vergleichend studiert. Gegenüber nativen menschlichen Hautfibroblasten (LaCol 1115) bestehen im Gegensatz zu cancerogen veränderten Zellen lediglich geringe Unterschiede; somit dürften die HuSkiEpicell jugendliche, nicht cancerogen veränderte Zellen darstellen. Hydrokortison und Theophyllin bewirken über verschiedene Mechanismen eine Hemmung der Zellproliferation. Dies trifft auch bei HuSkiEpicell zu, wie Veränderungen im Muster DNA-affiner Proteine andeuten. Da die HuSkiEpicell somit zum Studium von Zellregulationen geeignet erscheint, wurden wasserlöslicher Extrakt und DNA-affine Proteine aus Psoriasisschuppen sowie Psoriatiker-Serum auf proliferative Komponenten untersucht. Es konnte jedoch weder im Vollmedium noch im Minimalmedium ein signifikanter Unterschied im Wachstum der HuSkiEpicell gefunden werden.
    Notes: Summary “Human skin epithelium cells” (NCTC strain 2544; HSEpicell) are established cells and grow to a monolayer the same way as epithelial cells. Addition of proliferating or antiproliferating substances results in a typical dose-dependent influence on the cell growth: steroids inhibit mitosis, polyamines stimulate proliferation, while prostaglandin E2, theophylline and papaverine reduce cell growth. Since the pattern of chromosomal nonhistone proteins indicates alterations of gene activity, DNA-binding proteins of HSEpicells are analysed. Compared to native human skin fibroblasts (La Col 1115) there are only slight differences, in contrast to cancer cells. Therefore HSEpicells may represent undifferentiated non-cancer cells. Hydrocortisone and theophylline inhibit cell proliferation by different mechanisms. As indicated by the pattern of DNA-binding proteins, both substances also act on HSEpicells in two different ways. As HSEpicells can be used for studying cell regulation, water-soluble extract and DNA-binding proteins of psoriatic scales as well as sera of psoriasis patients are tested in respect to any proliferating component. However, no influence on cell proliferation could be found.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Forest pathology 28 (1998), S. 0 
    ISSN: 1439-0329
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Social Science & Medicine 26 (1988), S. 557-582 
    ISSN: 0277-9536
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Medicine
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 5
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Forest pathology 28 (1998), S. 0 
    ISSN: 1439-0329
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: We present prediction models for estimating tree mortality resulting from gypsy moth, Lymantria dispar, defoliation in mixed oak, Quercus sp., forests. These models differ from previous work by including defoliation as a factor in the analysis. Defoliation intensity, initial tree crown condition (crown vigour), crown position, and species grouping classes were highly significant in categorical analysis of variance for mortality. Heavy defoliation intensity was shown to have a strong, consistent influence in increasing the probability of tree mortality. Classification and Regression Tree (CART) analysis, a binomial decision tree procedure, was used to develop prediction models of mortality risk for use by forest managers. The best decision tree had 65 groups that correctly classified 75% of the live trees and 76% of the dead trees. Models were run separately by defoliation class and provided correct classifications between 63 and 78% of the trees. Forest land managers can use these models to assign probabilities of death for moderate and heavy defoliation intensity levels and compare predicted mortality to mortality of undefoliated trees to determine how gypsy moth defoliation will affect their stands. The probabilities can be used to develop marking guides Lased on projected defoliation levels for implementing silvicultural treatments to minimize gypsy moth effects in forest stands prior to infestation.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...