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  1. Article ; Online: Immunoexpression of α2-integrin and Hsp47 in hereditary gingival fibromatosis and gingival fibromatosis-associated dental abnormalities.

    Vieira-Júnior, João-Robson / de Oliveira-Santos, Carolina / Della-Coletta, Ricardo / Cristianismo-Costa, Daiane / Paranaíba, Lívia-Maris-R / Martelli-Júnior, Hercílio

    Medicina oral, patologia oral y cirugia bucal

    2013  Volume 18, Issue 1, Page(s) e45–8

    Abstract: Objective: The purpose of the present study was to investigate the expression of the α2-integrin subunit and heat shock protein 47 (Hsp47) in two families with isolated gingival fibromatosis (GF) form and one family with GF associated with dental ... ...

    Abstract Objective: The purpose of the present study was to investigate the expression of the α2-integrin subunit and heat shock protein 47 (Hsp47) in two families with isolated gingival fibromatosis (GF) form and one family with GF associated with dental abnormalities and normal gingival (NG).
    Study design: Immunohistochemistry was performed with antibodies against α2-integrin and Hsp47 in specimens from two unrelated families with hereditary gingival fibromatosis (Families 1 and 2) and from one family with a gingival fibromatosis-associated dental abnormality (Family 3); NG samples were used for comparison. The results were analysed statistically.
    Results: Immunoreactivity for α2-integrin and Hsp47 was observed in the nucleus of epithelial cells of both the basal and suprabasal layer and a more discreet signal was noted in connective tissue in all study samples. Hsp47 showed higher immunoreactivity in Family 2 compared with the other families (p ≤ 0.05). Despite the markup α2-integrin was higher in Family 3 there was no statistically significant difference between the families studied (p ≥ 0.05).
    Conclusions: Our results confirmed the heterogeneity of GF, such that similar patterns of expression of the condition may show differences in the expression of proteins such as Hsp47. Although no difference in α2-integrin expression was observed between GF and NG groups, future studies are necessary to determine the exact role of this protein in the various forms of GF and whether it contributes to GF pathogenesis.
    MeSH term(s) Cross-Sectional Studies ; Fibromatosis, Gingival/complications ; Fibromatosis, Gingival/genetics ; Fibromatosis, Gingival/immunology ; Fibromatosis, Gingival/metabolism ; HSP47 Heat-Shock Proteins/biosynthesis ; Humans ; Integrin alpha2/biosynthesis ; Tooth Abnormalities/complications ; Tooth Abnormalities/immunology ; Tooth Abnormalities/metabolism
    Chemical Substances HSP47 Heat-Shock Proteins ; Integrin alpha2
    Language English
    Publishing date 2013-01-01
    Publishing country Spain
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2171573-7
    ISSN 1698-6946 ; 1698-4447
    ISSN (online) 1698-6946
    ISSN 1698-4447
    DOI 10.4317/medoral.17970
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Amelogenesis imperfecta and nephrocalcinosis syndrome: a case report and review of the literature.

    Martelli-Júnior, Hercílio / dos Santos Neto, Pedro Eleutério / de Aquino, Sibele Nascimento / de Oliveira Santos, Carolina Carvalho / Borges, Sabina Pena / Oliveira, Eduardo Araujo / Lopes, Marcio Ajudarte / Coletta, Ricardo D

    Nephron. Physiology

    2011  Volume 118, Issue 3, Page(s) p62–5

    Abstract: Amelogenesis imperfecta (AI) is a group of hereditary disorders that affect the quality and/or quantity of dental enamel. This paper describes the clinicopathological features of a patient who was born of consanguineous parents and who presented with ... ...

    Abstract Amelogenesis imperfecta (AI) is a group of hereditary disorders that affect the quality and/or quantity of dental enamel. This paper describes the clinicopathological features of a patient who was born of consanguineous parents and who presented with oral alterations, including yellow and misshapen teeth, intrapulpal calcifications, delayed tooth eruption, and gum enlargement. Scanning electron microscopy of the teeth revealed hypoplastic enamel, and a renal ultrasound detected bilateral nephrocalcinosis, leading to a diagnosis of AI and nephrocalcinosis syndrome. Since nephrocalcinosis is often asymptomatic and can be associated with impaired renal function, dentists who see children with generalized and thin hypoplastic AI should consider a renal ultrasound scan and referral to a nephrologist, if appropriate. Children with nephrocalcinosis should also be considered for a dental check.
    MeSH term(s) Abnormalities, Multiple/diagnosis ; Abnormalities, Multiple/genetics ; Amelogenesis Imperfecta/diagnosis ; Child ; Consanguinity ; Female ; Humans ; Microscopy, Electron, Scanning ; Nephrocalcinosis/diagnosis ; Nephrocalcinosis/diagnostic imaging ; Syndrome ; Tooth/pathology ; Tooth/ultrastructure ; Ultrasonography
    Language English
    Publishing date 2011
    Publishing country Switzerland
    Document type Case Reports ; Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 207121-6
    ISSN 1660-2137 ; 1423-0186 ; 2235-3186 ; 1660-8151 ; 0028-2766
    ISSN (online) 1660-2137 ; 1423-0186 ; 2235-3186
    ISSN 1660-8151 ; 0028-2766
    DOI 10.1159/000322828
    Database MEDical Literature Analysis and Retrieval System OnLINE

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