The effects of orange juice enriched with vitamin D3 and encapsulated probiotics (Lacticaseibacillus casei Shirota and Lacticaseibacillus rhamnosus GG) compared to conventional orange juice on several cardiometabolic and anthropometric parameters in individuals at risk of cardiovascular disease.
This randomized, double-blind, controlled clinical trial aims to evaluate the effects of the consumption of orange juice enriched with vitamin D3 and encapsulated probiotics (Lacticaseibacillus casei Shirota and Lacticaseibacillus rhamnosus GG) compared to conventional orange juice in 50 high cardiometabolic risk volunteers. The participants must be overweight/obese with either prediabetes, and/or hypertension, and/or hyperlipidemia, and will be divided and randomly assigned into 2 groups of 25 individuals each. Participants will consume 250 ml of either orange juice enriched with vitamin D3 and encapsulated probiotics (Lacticaseibacillus casei Shirota and Lacticaseibacillus rhamnosus GG) or conventional orange juice daily for 8 weeks as an addition to their usual dietary intake. Participants will be asked to maintain their usual physical activity during the intervention period. At the beginning of the study and at 8 weeks, blood samples will be collected after 12 hours of fasting. Two-hour oral glucose tolerance test (OGTT) will be performed using a continuous glucose monitoring system at the beginning and at 8 weeks. Anthropometric measurements will be performed at the beginning and every week for 8 weeks. Basal metabolic rate (BMR) and central aortic blood pressure will be measured at the beginning, 4 weeks, and 8 weeks of intervention. Fecal samples will be collected and analyzed to study gut microbiome compositob at the intervention's beginning and at 8 weeks.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Enrollment
50
25 high cardiometabolic risk volunteers will be asked to consume 250 ml orange juice enriched with 2000 IU vitamin D3 and 10\^8 cfu/ml encapsulated probiotics (Lactocaseibacillus casei shirota and Lactocaseibacillus rhamnosus GG) daily, for 8 weeks, without any other change in their dietary habits and physical activity.
25 high cardiometabolic risk volunteers will be asked to consume 250 ml conventional orange juice daily, for 8 weeks, without any other change in their dietary habits and physical activity.
Agricultural University of Athens
Athens, Attica, Greece
Change in blood glucose concentrations
Clinically significant change in blood glucose concentrations (mg/dL)
Time frame: 8 weeks
Change in energy intake
Clinically significant change in energy intake (kcal/day)
Time frame: 8 weeks
Change in blood lipids
Clinically significant in triglycerides (mg/dL), total cholesterol (mg/dL), low-density lipoprotein (mg/dL), and high-density lipoprotein (mg/dL)
Time frame: 8 weeks
Change in blood insulin concentrations
Clinically significant change in blood insulin concentrations (μU/L)
Time frame: 8 weeks
Change in basal metabolic rate (BMR)
Clinically significant change in basal metabolic rate (kcal/day)
Time frame: 8 weeks
Change in central aortic blood pressure
Clinically significant change in central pressure (mmHg)
Time frame: 8 weeks
Change in body weight
Clinically significant change in body weight (kg)
Time frame: 8 weeks
Change in gut microbiome
The microbial composition in fecal samples will be measured via taxonomic profiling by 16S (V3-V4 region) ribosomal RNA gene amplicon sequencing using the MiSeq Illumina platform (v3 300bp pair-end sequencing) to identify a wide diversity of microbes
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.
Time frame: 8 weeks