Clinical trial NCT01604681: Supplementation With Flaxseed Oil in the State of Rio de Janeiro
Official title: The Effect of Flaxseed Oil Supplementation on Biomarkers, Quality of Life and Cognitive Function in Hypertensive and Dyslipidemic Subjects With or Without the C677T and A1298C Polymorphisms in MTHFR Gene in Different Municipalities of Rio de Janeiro
Study type: INTERVENTIONAL
Overall status: UNKNOWN
Phase: NA
Conditions: Hypertension
Dyslipidemia
Keywords: Linseed Oil
Oxidative Stress
Polymorphism, Genetic
Cardiovascular Diseases
Lead sponsor: Universidade Federal do Rio de Janeiro
Sponsor class: OTHER
Collaborators: name: Rio de Janeiro State Research Supporting Foundation (FAPERJ)
name: Conselho Nacional de Desenvolvimento Científico e Tecnológico
First posted: 2012-05-24
Enrollment: 200
Sex: ALL
Minimum age (years): 20
Maximum age (years): 90
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: PARALLEL

Brief summary: The purpose of this study is to evaluate the effect of supplementation with flaxseed oil combined with a nutritional counseling in reducing cardiovascular risk factors in homocysteine , biomarkers of inflammation, oxidative stress, improving quality of life and cognitive decline in hypertensive and dyslipidemic genotyped for the C677T and A1298C polymorphisms of methylenetetrahydrofolate reductase gene.

Detailed description: Epidemiological data show that there is a decline in death from cardiovascular disease (CVD) in the state of Rio de Janeiro, but this did not happen in the cities of Itaperuna, Niterói and Volta Redonda, in spite of presenting different epidemiological characteristics, still have high rates of death CVD. What led to our interest in investigating these municipalities. Our goal is to evaluate the effect of supplementation with flaxseed oil combined with nutritional counseling in reducing cardiovascular risk factors in homocysteine, biomarkers of inflammation, oxidative stress, improving quality of life and cognitive decline in hypertensive individuals dyslipidemic and genotyped for polymorphisms C677T and A1298C methylenetetrahydrofolate reductase gene (MTFHR). This is a clinical trial, double blind, placebo-controlled, randomized block, lasting three months. Study participants will be recruited from August 2011 to August 2013. Will be recruited at least 200 individuals in each city, considering possible losses and ensuring consistent results. Subjects will be randomized in blocks of 10, five patients in the group supplemented with linseed oil and five patients in the control group with placebo supplementation, ensuring proper distribution of the number of participants in the study groups. Will be collecting information on the socio-economic status of study participants through a structured questionnaire will be carried out assessment of food consumption - frequency of consumption and 24 hours, clinic - blood pressure, anthropometric - height, weight, waist circumference and BMI, body composition - bioelectrical impedance analysis, biochemical tests - lipid profile, blood glucose, insulin, homocysteine, serum folate concentrations in erythrocytes and, cobalamin, vitamin C, E and A, minerals - zinc, iron, copper and selenium, markers of oxidative stress and inflammatory response and molecular analysis - C677T and A1298C polymorphisms of methylenetetrahydrofolate reductase gene. It will also be diagnosed with depression and evaluation of physical activity and quality of life using questionnaires were previously validated. Our results demonstrate the effectiveness of supplementation with flaxseed oil, in reinforcing the results of nutritional counseling in reducing cardiovascular risk factors and biomarkers studied, besides adding to the knowledge about the interactions between markers of inflammation, oxidative stress with oil supplementation flaxseed and polymorphisms C677T and A1298C MTHFR gene, on which there are no reports in the literature.

Eligibility criteria: Inclusion Criteria:

* Diagnosis of hypertension and/or dyslipidemia,
* Have over 20 years,
* Both sexes,
* Any skin color and
* Take part in the study by signing the consent form.

Exclusion Criteria:

* Make use of some food or vitamin supplement,
* HIV positive and cancer.

Primary outcomes:
measure: Polymorphisms
timeFrame: Up to 3 months
Secondary outcomes:
measure: Cognitive decline
timeFrame: Up to 3 months
measure: Quality of life
timeFrame: Up to 3 months
measure: Oxidative stress
timeFrame: Up to 3 months
measure: Lipid profile
timeFrame: Up to 3 months
Other outcomes:
Locations:
city: Rio de Janeiro
country: Brazil
facility: Clementino Fraga Filho University Hospital Rio de Janeiro
Study officials:
References: