A standardized mouse model of Helicobacter pylori infection: introducing the Sydney strain
Φόρτωση...
Ημερομηνία
Συγγραφείς
Lee, A.
O'Rourke, J.
De Ungria, M. C.
Robertson, B.
Daskalopoulos, G.
Dixon, M. F.
Τίτλος Εφημερίδας
Περιοδικό ISSN
Τίτλος τόμου
Εκδότης
Περίληψη
Τύπος
Είδος δημοσίευσης σε συνέδριο
Είδος περιοδικού
peer-reviewed
Είδος εκπαιδευτικού υλικού
Όνομα συνεδρίου
Όνομα περιοδικού
Gastroenterology
Όνομα βιβλίου
Σειρά βιβλίου
Έκδοση βιβλίου
Συμπληρωματικός/δευτερεύων τίτλος
Περιγραφή
BACKGROUND & AIMS: Currently available Helicobacter pylori models show variable and, in some instances, poor colonization. There is a need for a strain with high colonizing ability to act as a standard for animal studies. METHODS: After screening a range of fresh clinical isolates and long-term adaptation in mice, a strain of H. pylon has been isolated with a very good colonizing ability. RESULTS: This strain, named the Sydney strain of H. pylori (strain SS1), is cagA and vacA positive. High levels of colonization (10(6)-10(7) colony-forming units/g tissue) were achieved consistently in C57BL/6 mice. Colonization levels varied depending on the mouse strain used with BALB/c, DBA/2, and C3H/He, all being colonized but in lower numbers. In all strains of mice, bacteria were clearly visible at the junctional zone between the antrum and the body. The phenotype was stable with colonizing ability remaining after 20 subcultures in vitro. The bacterium attached firmly to gastric epithelium. During 8 months, a chronic active gastritis slowly developed, progressing to severe atrophy in both C57BL/6 and BALB/c mice. CONCLUSIONS: The Sydney strain of H. pylori is available to all and will provide a standardized mouse model for vaccine development, compound screening, and studies in pathogenesis.
Περιγραφή
Λέξεις-κλειδιά
Animals, Anti-Bacterial Agents/pharmacology, Bacterial Adhesion/physiology, Disease Models, Animal, Drug Evaluation, Preclinical, Female, Helicobacter Infections/*microbiology/*pathology, Helicobacter pylori/drug effects/*genetics/isolation & purification, Mice, Mice, Inbred BALB C, Mice, Inbred C57BL, Mice, Inbred DBA, Microscopy, Electron, Species Specificity, Stomach/microbiology/pathology
Θεματική κατηγορία
Παραπομπή
Σύνδεσμος
http://www.ncbi.nlm.nih.gov/pubmed/9098027
http://ac.els-cdn.com/S0016508597701550/1-s2.0-S0016508597701550-main.pdf?_tid=be9451d73879d9552abb65000d9b2a6c&acdnat=1333707876_f505c4f91ae51fc08bdebfc1260a96bd
http://ac.els-cdn.com/S0016508597701550/1-s2.0-S0016508597701550-main.pdf?_tid=be9451d73879d9552abb65000d9b2a6c&acdnat=1333707876_f505c4f91ae51fc08bdebfc1260a96bd
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