Study of Stool Microbiota in Two Diverse Cohorts of Asian and Its Influence on Allergy Development
7. januar 2014 oppdatert av: National University Hospital, Singapore
A 2 Year Prospective Study of Stool Microbiota in Two Diverse Cohorts of Asian (Singaporean and Indonesian) Newborns and Its Influence on Allergy Development
This study aims to document prospectively the incidence of allergies of eczema, asthma and allergic rhinitis in 2 diverse cohorts (Singaporean and Indonesian) with contrasting lifestyles and socioeconomic development.
The profile of microbial colonization in terms of species variety, as well as their genetic diversity will be studied in Singapore and Indonesia cohorts and to correlate these with clinical allergy.
Studieoversikt
Status
Fullført
Forhold
Detaljert beskrivelse
The main objective of the current study is to establish the relationship of gut microbiota and development of allergy in 2 populations with different socioeconomic status and prevalence of allergy (high in Singapore and low in Indonesia).
A cohort of children will be followed prospectively from birth up to 2 years.
Stool from different time points, environmental exposure data and clinical manifestations of allergy will be analyzed and recorded.
Singapore and Indonesia will provide the South East Asian context in resolving early life influences associated with divergent allergy prevalence.
By studying subjects below age two, this will provide valuable knowledge regarding the epidemiology of allergy and atopy in the first years of life, which is poorly documented in this age group.
More importantly, the prospective nature and varied parameters included in this study (colony counts, species variety and genetic diversity of microbiota) will add to the global data and scientific evidence for the role of these factors in allergy development.
Studietype
Observasjonsmessig
Registrering (Faktiske)
74
Kontakter og plasseringer
Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.
Deltakelseskriterier
Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.
Kvalifikasjonskriterier
Alder som er kvalifisert for studier
- Barn
- Voksen
- Eldre voksen
Tar imot friske frivillige
Ja
Kjønn som er kvalifisert for studier
Alle
Prøvetakingsmetode
Ikke-sannsynlighetsprøve
Studiepopulasjon
75 subjects randomised into the placebo arm of an ongoing randomised double-blind placebo controlled clinical trial at National University Hospital, Singapore.
For Indonesia Cohort, the expecting mothers visiting at the well mother clinics at Gadjah Mada University Hospital were invited to participate in the study.
Beskrivelse
Inclusion Criteria:
Pre-delivery evaluation
- Either parent or sibling (ie first degree relative) has a history of atopy. This will be evidenced by a doctor-diagnosis of asthma, allergic rhinitis or eczema AND a positive skin prick test/specific IgE test to any of a panel of common allergens.
- Parents agree to the child's participation in the study and sign the Informed Consent.
- The subject and the parents are willing to comply with procedures and both child and parents are able to keep to scheduled clinic visits.
- Both parents are at contactable range (with valid mobile or land line numbers) for study team to arrange and schedule clinic visits and complete telephone interviews.
Post-delivery evaluation
- The subject is born full term (at least 37 weeks gestation).
- The subject does not have major congenital malformations/major illness as judged by the doctor.
- The subject is in otherwise good, stable health on the basis of medical history, physical examination.
- Family appears to be able to successfully complete this study.
Exclusion Criteria:
- The parent is, in the opinion of the investigator, mentally or legally incapacitated, preventing informed consent from being obtained.
- The parent is unable/ unwilling to comply with procedures.
Studieplan
Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.
Hvordan er studiet utformet?
Designdetaljer
Kohorter og intervensjoner
Gruppe / Kohort |
|---|
|
1
75 subjects randomised into the placebo arm of an ongoing randomised double-blind placebo controlled clinical trial at National University Hospital, Singapore
|
|
2
The expecting mothers visiting at the well mother clinics at Gadjah Mada University Hospital were invited to participate in the study
|
Hva måler studien?
Primære resultatmål
Resultatmål |
Tidsramme |
|---|---|
|
Incidence of allergies of eczema, asthma and allergic rhinitis in 2 diverse cohorts (Singaporean and Indonesian)
Tidsramme: 2 years
|
2 years
|
Sekundære resultatmål
Resultatmål |
Tidsramme |
|---|---|
|
Gastrointestinal flora in Singapore and Indonesia cohorts
Tidsramme: 1 year
|
1 year
|
Samarbeidspartnere og etterforskere
Det er her du vil finne personer og organisasjoner som er involvert i denne studien.
Samarbeidspartnere
Etterforskere
- Hovedetterforsker: Bee Wah Lee, MD, National University Hospital, Singapore
Studierekorddatoer
Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.
Studer hoveddatoer
Studiestart
1. mars 2006
Primær fullføring (Faktiske)
1. november 2009
Studiet fullført (Faktiske)
1. november 2009
Datoer for studieregistrering
Først innsendt
7. juli 2008
Først innsendt som oppfylte QC-kriteriene
7. juli 2008
Først lagt ut (Anslag)
11. juli 2008
Oppdateringer av studieposter
Sist oppdatering lagt ut (Anslag)
8. januar 2014
Siste oppdatering sendt inn som oppfylte QC-kriteriene
7. januar 2014
Sist bekreftet
1. januar 2014
Mer informasjon
Begreper knyttet til denne studien
Ytterligere relevante MeSH-vilkår
Andre studie-ID-numre
- SQNB01
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