Mixed Strain H. Pylori Infection in Patients Who Have Problems With Eradication of H. Pylori
16 juli 2010 bijgewerkt door: University Medical Centre Ljubljana
Multi Locus Sequence Typing (MLST) Used as Tool to Confirm Ability of Susceptible Helicobacter Pylori Strains to Gain Resistance to Clarithromycin During Eradication Therapy Independently of Mixed Strain Helicobacter Pylori Infection
The purpose of this study is to determine whether mixed H. pylori strain infection is the reason for eradication failure during treatment of H. pylori infection.
The investigators present the results got from extensive sampling of biopsy samples taken from individuals diagnosed with H. pylori connected disease.
The investigators were looking for individuals that were not able to eradicate H. pylori although they had susceptibility testing tailored antibiotic therapy.
On their control visit after 2 months they presented again with H. pylori although at their first visit they had H. pylori isolated from biopsy sample sensitive to all antibiotics prescribed.
Multi Locus Sequence Typing (MLST) was used to prove the sequence type of H. pylori and E test was used to determine susceptibility of H. pylori to antibiotics.
Studie Overzicht
Toestand
Voltooid
Conditie
Interventie / Behandeling
Studietype
Observationeel
Inschrijving (Werkelijk)
10
Contacten en locaties
In dit gedeelte vindt u de contactgegevens van degenen die het onderzoek uitvoeren en informatie over waar dit onderzoek wordt uitgevoerd.
Studie Locaties
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-
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Ljubljana, Slovenië, 1000
- Institute of microbiology and immunology
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Deelname Criteria
Onderzoekers zoeken naar mensen die aan een bepaalde beschrijving voldoen, de zogenaamde geschiktheidscriteria. Enkele voorbeelden van deze criteria zijn iemands algemene gezondheidstoestand of eerdere behandelingen.
Geschiktheidscriteria
Leeftijden die in aanmerking komen voor studie
18 jaar tot 65 jaar (Volwassen, Oudere volwassene)
Accepteert gezonde vrijwilligers
Nee
Geslachten die in aanmerking komen voor studie
Allemaal
Bemonsteringsmethode
Niet-waarschijnlijkheidssteekproef
Studie Bevolking
The investigators invited people who were not able to eradicate H. pylori although at their first visit they had H. pylori sensitive to all antibiotics tested.
At first visit all patients had stomach biopsy sample taken and H. pylori isolated and therapy prescribed.
If they did not eradicate bacteria after 2 months they were again invited to control visit to define the problem and appropriate therapy prescribed.
They were again invitation to control visit at the end of June 2010 to see the outcome of therapy.
Beschrijving
Inclusion Criteria:
- People who have H. pylori sensitive to all antibiotics before therapy and and do not eradicate H. pylori after appropriate antibiotic therapy.
Exclusion Criteria:
- People who did not eradicate H. pylori because of primary resistance to antibiotics.
Studie plan
Dit gedeelte bevat details van het studieplan, inclusief hoe de studie is opgezet en wat de studie meet.
Hoe is de studie opgezet?
Ontwerpdetails
Cohorten en interventies
Groep / Cohort |
Interventie / Behandeling |
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H. pylori eradication failure
People who are not able to eradicate H. pylori although the appropriate antibiotic therapy taken.
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Amoxicillin, metronidazole and tetracyclin as primary drugs to treat H. pylori infection in duration of 10 days.
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Wat meet het onderzoek?
Primaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
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Sequence type of H.pylori determined with MLST as a good evidence that people are infected with only one strain of H. pylori
Tijdsspanne: Six months after first visit the strains from before/after therapy will be inspected with MLST to see if people have mixed strain infection.
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The investigators assume that people that are not able to eradicate infection with H. pylori although they have never been treated for such infection and they have taken appropriate therapy, have such problems because H. pylori is capable to escape from immune response.
The investigators will define if patients have the same H. pylori sequence type through longer period and that such H. pylori is capable to develope resistance to clarithromycin very quickly.Such patients can eliminate H. pylori if we check the infection status more often and give them more suitable antibiotic therapy.
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Six months after first visit the strains from before/after therapy will be inspected with MLST to see if people have mixed strain infection.
|
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Sequence type of H.pylori determined with MLST as a good evidence that people are infected with only one strain of H. pylori
Tijdsspanne: 9 months after first visit to see if people still have H. pylori due to insufficient immune response.
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The investigators assume that people that are not able to eradicate infection with H. pylori although they have never been treated for such infection and they have taken appropriate therapy, have such problems because H. pylori is capable to escape from immune response.
The investigators will define if patients have the same H. pylori sequence type through longer period and that such H. pylori is capable to develope resistance to clarithromycin very quickly.Such patients can eliminate H. pylori if we check the infection status more often and give them more suitable antibiotic therapy.
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9 months after first visit to see if people still have H. pylori due to insufficient immune response.
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Medewerkers en onderzoekers
Hier vindt u mensen en organisaties die betrokken zijn bij dit onderzoek.
Onderzoekers
- Studie directeur: Alojz Ihan, MD. PhD, Institute of mircobiology and immunology, Slovenia
Studie record data
Deze datums volgen de voortgang van het onderzoeksdossier en de samenvatting van de ingediende resultaten bij ClinicalTrials.gov. Studieverslagen en gerapporteerde resultaten worden beoordeeld door de National Library of Medicine (NLM) om er zeker van te zijn dat ze voldoen aan specifieke kwaliteitscontrolenormen voordat ze op de openbare website worden geplaatst.
Bestudeer belangrijke data
Studie start
1 november 2008
Primaire voltooiing (Werkelijk)
1 december 2009
Studie voltooiing (Werkelijk)
1 juli 2010
Studieregistratiedata
Eerst ingediend
13 juli 2010
Eerst ingediend dat voldeed aan de QC-criteria
16 juli 2010
Eerst geplaatst (Schatting)
19 juli 2010
Updates van studierecords
Laatste update geplaatst (Schatting)
19 juli 2010
Laatste update ingediend die voldeed aan QC-criteria
16 juli 2010
Laatst geverifieerd
1 juli 2010
Meer informatie
Termen gerelateerd aan deze studie
Aanvullende relevante MeSH-voorwaarden
Andere studie-ID-nummers
- IMI2010-2
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