Clinical Trial: Study of Dry Beriberi in Mayotte, Comoro Archipelago
Study Status: Recruiting
Recruit Status: Unknown status
Study Type: Observational
Official Title: Determination Study of Dry Beriberi in Patients Native to the Comoro Archipelago, in Mayotte (MABECO).
Brief Summary: The purpose of this study is to assess the existence of a genetic factor, suspected to be involved, aside from likely food deficiency contribution, in occurrence of dry beriberi, in patients who experienced dry beriberi and in a case group composed of 3 people, free from beriberi, within the same household.
Detailed Summary:
A team of 2 investigators, a nurse and an investigator speaking French, Shibushi and Shimaore (3 languages in use in Mayotte), will visit exposed patients who agreed to participate to the study.
3 controls, fulfilling inclusion criteria, will be recruited within the household by drawing lots.
Clinical examination and food survey by means of a questionnaire will be performed.
Blood samples will be drawn to determine thiamine status, vitamin B1 dosage, erythrocyte transketolase activity and thiamine pyrophosphate effect, analysis will be performed by Biomnis laboratory in Lyon.
For the genetic study, 4 drops of blood will be put down on Whatman paper and sent to Dr Johannes COY in Darmstadt Germany, for DNA extraction and PCR screening for mutations.
Sponsor: Groupe Hospitalier Sud Reunion
Current Primary Outcome: Mutations on one of the alleles of the promoter of the gene TKTL1 (transketolase-like gene) in the homozygous state in the patients and not in the controls (heterozygotes or not carrier of the mutation). [ Time Frame: day 1 ]
Original Primary Outcome: Same as current
Current Secondary Outcome:
- To evaluate food intakes in vitamin B1 and anti-thiamine factors (polyphenols). [ Time Frame: day 1 ]
- To evaluate Thiamine biological status (blood thiamine, erythrocyte transketolase activity and the thiamine pyrophosphate effect) [ Time Frame: day 1 ]
Original Secondary Outcome: Same as current
Information By: Groupe Hospitalier Sud Reunion
Dates:
Date Received: July 2, 2009
Date Started: June 2009
Date Completion:
Last Updated: July 7, 2009
Last Verified: July 2009
