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
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of public health dentistry 56 (1996), S. 0 
    ISSN: 1752-7325
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: As we celebrate this spectacular 50th anniversary, fluoridation continues to be the most effective public health strategy to reduce the disease burden of dental caries. Curiously, while H. Trendley Dean and his colleagues at the National Institutes of Health were investigating the effects of fluoride on tooth enamel in the mid-1930s, two young boys, one in London and the other in Chicago, were growing up to become the catalysts for another “biological revolution.” These two very talented individuals, James Watson and Francis Crick, would later meet by accident at Cambridge and produce their seminal discovery published in April 1953 as a letter in Nature, a one-page article provoking an international scientific adventure to understand living organisms in terms of the structure and function of deoxyribonucleic acid (DNA), a universal genetic code and a rationale for the applications of recombinant DNA technology (rDNA) in fields as diverse as agriculture, energy, industry, and health. As we now reflect upon the triumphs from fluoridation and ponder the next 50 years and the complexities of craniofacial, oral, and dental diseases, it becomes increasingly evident that recombinant DNA technology coupled with health promotion, disease prevention, and public education offers the promise for remarkable advances in prevention, diagnosis, and therapeutics in oral medicine.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of public health dentistry 56 (1996), S. 0 
    ISSN: 1752-7325
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    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
    Annals of the New York Academy of Sciences 758 (1995), S. 0 
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    ISSN: 1600-0765
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Studies were designed to test the hypothesis that Hertwig's epithelial root sheath (HERS) synthesizes and secretes enamel-related proteins that participate in the process of acellular cementum formation. Our experimental strategy was to examine sequential root development of the mouse mandibular flrst molar in vitro and in long-term organ culture in vitro using serumless, chemical1y-defined medium. Using anti-amelogenin, anti-enamelin and anti-peptide antibodies, enamel-related antigens were localized within intermediate cementum during HERS differentiation and root formation in vitro. Cap stage molars maintained for periods of up to 31 days in organ culture expressed morphogenesis and cytodifferentiation as identified by tooth crown and initial root, cementum and bone formation. Metabolically-labeled HERS products were analyzed by immunodetection using enamel-related antibodies and one- and two-dimensional SDS gel electrophoresis. A 72 kDa and 26 kDa polypeptide were identified in forming mouse cementum. Both of these root putative cementum proteins yield similar (identical) amino acid compositions; however, both proteins differed from the compositions of either mouse crown enamelin or amelogenin proteins. This approach provides a new and novel in vitro model towards understanding HERS differentiation and functions related to root and bone formation. The data support the hypothesis that HERS cells synthesize polypeptides related to but also difterent from canonical crown enamel proteins.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 5
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature America Inc.
    Nature genetics 23 (1999), S. 378-380 
    ISSN: 1546-1718
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Medicine
    Notes: [Auszug] Perhaps the most intense antimicrobial war waged by our bodies takes place on the warm, moist battlefield of periodontal tissues. In comparison with the gut, where several pounds of Escherichia coli are kept in check in the equivalent of placid farmland, the mouth is a dangerous place; 6 ...
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 6
    ISSN: 1546-1718
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Medicine
    Notes: [Auszug] Craniofacial malformations are among the most frequent congenital birth defects in humans; cleft palate, that is inadequate fusion of the palatal shelves, occurs with an annual incidence of 1 in 700 to 1 in 1,000 live births among individuals of European descent. The secondary palate arises as ...
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 7
    ISSN: 1432-0568
    Keywords: Chondrogenesis ; Meckel's cartilage ; Limb bud ; Nasal septum ; Collagen ; PNA
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Previous studies of chondrogenesis have been focused on limb bud cartilage, whereas little is known about chondrogenic processes of other cartilages with different developmental fates. We hypothesize that cartilages with various developmental fates might show identical characteristics of chondrogenesis. The chondrogenic processes in the nasal septum, the mandible, and the limb bud of the mouse were examined by means of PNA-binding glycoconjugate, and types I and II collagen expression. Swiss-Webster mouse embryos of 11 days (E11) to 14 days (E14) gestation were fixed and processed for imniuno- and lectin histochemistry. The blastema of mesenchymal cell aggregates stained positively with anti-type I collagen, but very weakly with anti-type II collagen in all three models at E12, whereas PNA bound to the blastema in the limb bud but not in nasal septum or mandible. Types I and II collagens coexisted in cartilages at E13. Type II collagen was predominant in E14; type I collagen was confined to the peripheral region. The synchronized transitional expression of the collagen phenotypes in all three embryonic cartilages may be systemically regulated. The presence or absence of the PNA-binding glycoconjugates may be involved in characterizing the nature of the cartilages.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 8
    ISSN: 1432-0827
    Keywords: Enamel matrix ; in vitro, mouse ; Amerlogenesis ; Mineralization ; CAM
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Notes: Summary The temporal, spatial, and cytological characteristics of secretory amelogenesis in developing mouse mandibular first molar tooth organs have been compared during in vivo odontogenesis (from the Cap Stage in Theiler stage 25 C57BL/6 embryos to 10-day-old postnatal mice), as xenografts on the chick chorioallantoic membrane (CAM) for periods up to 7 days, and as explants in chemically defined medium without serum or antibiotics for periods up to 21 days in vitro. Tooth morphogenesis and cytodifferentiation proceeded in each environmental condition in the same sequence albeit at different rates of development. In vivo and CAM xenografts were remarkably comparable in their respective expressions of dentinogenesis and amelogenesis, whereas those explants cultured in a chemically defined medium without serum or antibiotics developed at a much slower rate (e.g., 0.5 days in vivo is equivalent to 1 day in vitro). In each experimental group, secretory amelogenesis was typically first detected along the mesial-buccal cusp of the molar organ independent of which environment was evaluated. Tooth morphogenesis in vitro and as xenografts on the CAM was routinely smaller than in situ odontogenesis. In each environmental condition a “stippled” precursor ultrastructural form of enamel matrix preceded mineralization, except during in vitro cultures of tooth organs. In vitro secretory amelogenesis or dentinogenesis did not indicate morphological characteristics of mineralization; both dentine and enamel matrices did not mineralize under the permissive environmental conditions used in these experiments. Calcium hydroxyapatite crystal formations within dentine and along the dentinoenamel junction during initial enamel matrix formation were not observed during in vitro tooth organogenesis, even for periods up to 21 days in vitro. We conclude that cap stage mandibular first molar tooth organs (enamel organ epithelium and adjacent dental papilla mesenchyme) from Theiler stage 25 embryos contain all of the necessary developmental instructions to express morphogenesis and cytodifferentiation except cues for the serum-containing factors for mineralization.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Calcified tissue international 24 (1977), S. 223-229 
    ISSN: 1432-0827
    Keywords: Enamel-cementum-morphology ; Immunocytochemistry ; Biochemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Notes: Summary The continuously erupting rabbit incisor tooth is normally thought of as having an enamel covered “crown” on its labial surface and a cementum covered “root” on its lingual surface. We have examined both surfaces of continuously erupting rabbit incisor teeth taken from near term embryos by a variety of means, including transmission and scanning electron microscopy, biochemical fractionation, and immunohistochemistry. In all cases, we could detect no qualitative difference in the early extracellular matrices taken from the labial and lingual surfaces of the teeth. Both matrices were shown to be composed of dentin and enamel, although the thickness and geometry of the enamel matrix on the lingual surface was somewhat different from that on the labial surface.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 10
    ISSN: 1432-0827
    Keywords: Mandible ; Cartilage ; Osteoid ; Differentiation ; In Vitro
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Notes: Summary To evaluate the requirement of vascular and/or neurotrophic-derived factors on determination and differentiation of chondrogenic and osteogenic phenotypes, early embryonic quail and mouse mandibular processes were cultured using a modified Trowell method in a serumless, chemically-defined medium for 10 days. Quail HH stage 22 and mouse Theiler stage 16 mandibular processes formed cartilage and produced osteoid under these experimental conditions. Chondrogenic and osteogenic phenotypes were expressed without serum or other exogenous growth-promoting influences.
    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...