Piloting a Dietary Vitamin E Intervention During Pregnancy

Not Applicable

Completed

• Conditions: Asthma
• Interventions: Dietary Supplement: Vitamin E enhanced soup; Dietary Supplement: Non-enhanced soups

• Registration Number: NCT01661530
• Lead Sponsor: University of Aberdeen

Brief Summary

In the last forty years the prevalence of asthma has increased in westernised countries. We have hypothesised that this increase may be a consequence of changing diet. Several birth cohort studies have now reported an association between reduced maternal vitamin E intake during pregnancy and childhood asthma.

However, it remains to be seen whether increasing maternal vitamin E intake during pregnancy reduces the risk of childhood asthma. We are planning a large placebo controlled trial in pregnant women, to investigate whether optimisation of dietary vitamin E intake to the recommended 15mg/day reduces the likelihood of childhood asthma. We believe that a dietary intervention using vitamin E in its natural form of food is more likely to be successful and acceptable than a vitamin E supplement. We have previously demonstrated than pregnant women can optimise their vitamin E intake using a personalised dietary plan with the help of a dietitian however this intervention was complex and could not be translated into everyday use. With commercial support we have developed a range of soups containing foods naturally rich in vitamin E designed to optimise maternal vitamin E intake to 15mg/day. A range of similar tasting and looking placebo soups has also been developed. In this study we will pilot a randomised controlled trial of the active and placebo soups to ascertain whether pregnant women are willing and able to optimise their vitamin E intake during pregnancy using the soups in order to reduce the risk of their child developing asthma. optimising maternal vitamin E intake during pregnancy.

Detailed Description

Not available

Study Timeline

• Study First Submitted: 2012-08-07
• Study First Submitted QC: 2012-08-07
• Study First Posted: 2012-08-09
• Study Start: 2012-12
• Primary Completion: 2013-06
• Status Verified: 2014-01
• Study Completion: 2014-01
• Last Update Submitted: 2014-01-13
• Last Update Posted: 2014-01-14

Recruitment & Eligibility

• Status: COMPLETED
• Sex: Female
• Target Recruitment: 59

Inclusion Criteria

• 10-12 weeks pregnant.
• Routine low risk antenatal care.
• A personal or partner history of asthma at anytime.
• Able and willing to give informed consent to participate
• Able and willing to participate in the study procedures

Exclusion Criteria

• Use of vitamin E supplements.
• A history of diabetes, coagulopathies or use of anticoagulants, use of clopidogrel, cholestyramine, cyclosporin A, gemfibrozil, isoniazid, orlistat, anticonvulsants.
• Any other significant disease or disorder which, in the opinion of the investigator, either puts the woman at risk because of participating in the study or may influence the results of the study, or the woman's ability to participate in the study.
• Participating in another clinical study
• Previous allocation of randomisation code in the study.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Vitamin E enhanced diet	Vitamin E enhanced soup	Range of three vitamin E enhanced soups (400g/tin) containing 18-20mg vitamin in natural food form. Three portions per week
Non-enhanced dietary intervention	Non-enhanced soups	Range of three similar looking and tasting soups (400g/tin) with naturally low (\<3mg) vitamin E content. Three portions per week

Primary Outcome Measures

Name	Time	Method
Participation of pregnant women in a randomised trial of enhanced and placebo soups from 12 weeks gestation until delivery.	1 year

Secondary Outcome Measures

Name	Time	Method
Dietary vitamin E intake during pregnancy.	1 year
Lung function of new born infants.	1 year

Trial Locations

Locations (1)

Aberdeen Maternity Hospital; 🇬🇧 Aberdeen, United Kingdom