Influence of Iron and Foliate Transporters on Bioavailability of These Micronutrients in the Organism

Nutrition Disorders Clinical Trial

— WiMKo  

Official title:

The Study of the Influence of Intestinal and Cellular Iron and Foliate Transporters on Bioavailability of These Micronutrients in the Organism

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT03438942
• Other study ID #: 917/16
• Status: Completed
• Phase: N/A
• Start date: September 30, 2018
• Est. completion date: December 30, 2021

Study information

• Verified date: April 2022
• Source: Poznan University of Life Sciences
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

The aim of the study is to determine the factors affecting the bioavailability of iron and folic acid during the simultaneous use of iron supplements and folic acid supplements in non-pregnant women of childbearing age.

Description:

Scientists in the field of nutrition and gynecology and obstetrics have been paying attention to the need of use iron and folate supplements in women of childbearing age. Increased intake of micronutrients in the diet or the use of supplementation does not always bring the expected results, what depends on factors that affect the bioavailability of minerals and vitamins. On the one hand these factors are related to the properties of food intake, e.g. to the presence of other nutrients that can increase or decrease the absorption of folates and iron (eg vitamin C, phytates), and on the other hand the functioning of the body itself, which to a certain extent is determined by genetic factors (e.g., genetically determined reduced activity of methylenetetrahydrofolate reductase [MTHFR], which reduces the bioavailability of folic acid).

The study aims:

• assessment of the effect of simultaneous supplementation with iron and folate on:

• parameters of the iron metabolism

• parameters of the folate metabolism

• the estimation of gene polymorphisms encoding proteins transporting iron and folate

• obtaining information whether the polymorphism of genes encoding proteins transporting iron and folate is related to the effectiveness of the iron and folic acid supplementation used in non-pregnant women of childbearing age.

In 200 non-pregnant women of childbearing age a blood level of iron and folic acid will be determined. Subjects with low level of blood iron and folic acid will be supplemented with oral iron and folic acid for 3 months. Subjects with proper level of blood iron and folic acid will be a control group. At baseline and at completion of the study (after 3 months) fasting blood will be collected and abovementioned parameters will be estimated.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 200
• Est. completion date: December 30, 2021
• Est. primary completion date: September 30, 2021
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: Female
• Age group: 18 Years to 35 Years

Eligibility

Inclusion Criteria:

• age 18 to 35 years

• stable body weight (< 3 kg self-reported change during the previous three months)

• written informed consent to participate in the study,

• regular menstrual period;

• regular diet

Exclusion Criteria:

• history of use of any dietary supplements within the one month prior to the study containing iron or folic acid

• clinically relevant acute or chronic inflammatory disease in the respiratory, gastrointestinal or genitourinary system or in the mouth, throat, paranasal sinuses and / or connective tissue disease, arthritis;

• simultaneous participation in a study that affects body weight or use of diet / medication / nutritional behaviors affecting body weight;

• a history of infection in the month prior to the study

• nicotine, drug or alcohol abuse

• vegetarian diet;

• pregnancy or lactation

• other condition that, in the opinion of the investigators, would make participation not in the best interest of the patient or could prevent, limit, or confound the study results

Related Conditions & MeSH terms

• Nutrition Disorders

Intervention

Dietary Supplement:
• Folic acid and iron supplementation
Individuals with low level of blood folic acid and iron- will receive folic acid and iron supplementation daily, for 3 months
• Control group
Individuals with proper level of blood folic acid and iron- will not receive folic acid and iron supplementation daily, for 3 months

Locations

Country	Name	City	State
Poland	Poznan University of Life Sciences	Poznan

Sponsors (1)

Lead Sponsor	Collaborator
Poznan University of Life Sciences

Country where clinical trial is conducted

Poland, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	folic acid concentrations at baseline	blood folic acid concentrations at baseline	At the baseline
Primary	folic acid concentrations after 3 months of treatment	blood folic acid concentrations after 3 months of treatment	after 3 months of treatment
Primary	iron concentrations at baseline	blood iron concentrations at baseline	At the baseline
Primary	iron concentrations after 3 months of treatment	blood ron concentrations after 3 months of treatment	after 3 months of treatment
Secondary	blood pressure	blood pressure	At the baseline
Secondary	body mass	body mass	At the baseline
Secondary	body height	body height	At the baseline
Secondary	Body % fat	Fat tissue % estimated with air displacement plethysmography	At the baseline
Secondary	Body % muscle	Muscle tissue % estimated with BodPod (air displacement plethysmography)	At the baseline
Secondary	ferritin at the baseline	serum ferritin concentration at the baseline	At the baseline
Secondary	ferritin after 3 months of treatment	serum ferritin concentration after 3 months of treatment	after 3 months of treatment
Secondary	hepcidin at the baseline	serum hepcidin concentration at the baseline	At the baseline
Secondary	hepcidin after 3 months of treatment	serum hepcidin concentration after 3 months of treatment	after 3 months of treatment
Secondary	homocysteine at the baseline	serum homocysteine concentration at the baseline	At the baseline
Secondary	homocysteine after 3 months of treatment	serum homocysteine concentration after 3 months of treatment	after 3 months of treatment
Secondary	total iron-binding capacity (TIBC) at the baseline	Blood total iron-binding capacity at the baseline	At the baseline
Secondary	TIBC after 3 months of treatment	Blood total iron-binding capacity after 3 months of treatment	after 3 months of treatment
Secondary	divalent metal transporter 1 (DMT1) gene polymorphisms	polymorphisms of gene encoding divalent metal transporter 1	At the baseline
Secondary	transferrin receptor 2 (TfR2) gene polymorphisms	polymorphisms of gene encoding transferrin receptor 2	At the baseline
Secondary	proton-coupled folate transporter (PCFT) gene polymorphisms	polymorphisms of gene encoding proton-coupled folate transporter	At the baseline
Secondary	reduced folate carrier (RFC) gene polymorphisms	polymorphisms of gene encoding reduced folate carrier	At the baseline