The expression of the O-linked N-acetylglucosamine containing epitope H in the gemistocytic, pilocytic and subependymal giant cell astrocytomas
Φόρτωση...
Ημερομηνία
Συγγραφείς
Arvanitis, L. D.
Koukoulis, G. K.
Kanavaros, P.
Τίτλος Εφημερίδας
Περιοδικό ISSN
Τίτλος τόμου
Εκδότης
Περίληψη
Τύπος
Είδος δημοσίευσης σε συνέδριο
Είδος περιοδικού
peer-reviewed
Είδος εκπαιδευτικού υλικού
Όνομα συνεδρίου
Όνομα περιοδικού
Oncol Rep
Όνομα βιβλίου
Σειρά βιβλίου
Έκδοση βιβλίου
Συμπληρωματικός/δευτερεύων τίτλος
Περιγραφή
The epitope H contains an O-linked N-acetylglucosamine residue in a specific conformation and/or environment recognized by the monoclonal antibody H. It has previously been shown that the epitope H is present in several types of normal and pathological cells and in several polypeptides. In normal human brains the epitope H is present mostly to a minority of fibrous astrocytes, whereas it is greatly up-regulated in reactive astrocytes and is increased in well differentiated fibrillary astrocytomas compared to anaplastic astrocytomas and glioblastomas. In this study the expression of the epitope H was investigated in thirty cases of gemistocytic (WHO grade II), pilocytic (WHO grade I), and subependymal giant cell (WHO grade I) astrocytomas using the mAbH with the indirect immunoperoxidase method. The ten cases of gemistocytic astrocytomas revealed an overall high expression pattern. The ten cases of pilocytic astrocytomas revealed a biphasic pattern of epitope H expression. The dense tumor areas composed of elongated pilocytic cells revealed high expression of the epitope H. The loose cystic tumor areas composed of stellate cells revealed low expression of the epitope H. The ten cases of subependynal giant cell astrocytomas occurring in tuberous sclerosis revealed an overall high expression pattern. This study shows that there is high expression of the epitope H in gemistocytic, pilocytic and subependymal giant cell astrocytomas. Collectively considering, the present and our previous data, it appears that there is a spectrum of the expression levels of the epitope H ranging from the high expression in the reactive astrocytes and low grade astrocytomas to the low/null expression in the normal astrocytes and glioblastomas.
Περιγραφή
Λέξεις-κλειδιά
Acetylglucosamine/*analysis/immunology, Astrocytoma/*chemistry, Brain Neoplasms/*chemistry, *Epitopes, Humans, Immunohistochemistry
Θεματική κατηγορία
Παραπομπή
Σύνδεσμος
http://www.ncbi.nlm.nih.gov/pubmed/19639198
Γλώσσα
en
Εκδίδον τμήμα/τομέας
Όνομα επιβλέποντος
Εξεταστική επιτροπή
Γενική Περιγραφή / Σχόλια
Ίδρυμα και Σχολή/Τμήμα του υποβάλλοντος
Πανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών Υγείας. Τμήμα Ιατρικής