Trial Outcomes & Findings for Effect of Dietary Supplemental Fish Oil in Alleviating Health Hazards Associated With Air Pollution (NCT NCT03255187)

NCT ID: NCT03255187

Last Updated: 2024-04-23

Results Overview

Peripheral blood samples (5 ml) were drawn, separated into serum, and stored at -80 ℃ within 30 minutes. We also measure GSH-Px. The values in the following Outcome Measure Data Table refer to the means of measurements at 4 follow-ups.

Recruitment status

COMPLETED

Study phase

NA

Target enrollment

70 participants

Primary outcome timeframe

Blood samples are obtained at the end of each round of 4 follow-ups with an interval of 2 weeks in the last 2 months of intervention.

Results posted on

2024-04-23

Participant Flow

Recruitment was conducted on Agust, 2017 in Fenglin Campus, Fudan University. A total of 93 participants were assessed for eligibility and 70 of them were finally recruited.

Participant milestones

Participant milestones
Measure
Fish Oil Supplementation
This group receive 2.5 g/day (two 1.25-g capsules daily) of fish oil (marine-derived n-3 PUFA) for 4 consecutive months. Fish oil supplementation: Participants of this randomized double-blind placebo-controlled trial include 70 healthy Chinese adults. The investigators randomly assign participants to two parallel groups at baseline using a random-number table. Compliance is determined by directly observed supplement intake. Participants in fish oil group are assigned to receive 2.5 g/day in divided doses. Each capsule contains 60% n-3 PUFA \[24% docosahexanoic acid (C22:6 n-3 DHA) and 36% eicosapentaenoic acid (C20:5 n-3 EPA)\].
Sunflower Seed Oil Supplementation
This group receive 2.5 g/day (two 1.25-g capsules daily) of placebo (sunflower seed oil) for 4 consecutive months. Sunflower seed oil supplementation: Participants of this randomized double-blind placebo-controlled trial include 70 healthy Chinese adults. The investigators randomly assign participants to two parallel groups at baseline using a random-number table. Compliance is determined by directly observed supplement intake. Participants in sunflower seed oil group receive 2.5 g/day in divided doses, and the capsules are identical as the fish oil capsules. Each capsule containes 14.4% palmitic acid (C16:0), 16.0% oleic acid (C18:1 n-9), and 57.6% linoleic acid (C18:2 n-6).
Periodfrom Enrollment to First Follow-up
STARTED
35
35
Periodfrom Enrollment to First Follow-up
COMPLETED
34
32
Periodfrom Enrollment to First Follow-up
NOT COMPLETED
1
3
Period From First to Second Follow-up
STARTED
34
32
Period From First to Second Follow-up
COMPLETED
34
31
Period From First to Second Follow-up
NOT COMPLETED
0
1
Period From Second to Third Follow-up
STARTED
34
31
Period From Second to Third Follow-up
COMPLETED
34
31
Period From Second to Third Follow-up
NOT COMPLETED
0
0
Period From Third to Fourth Follow-up
STARTED
34
31
Period From Third to Fourth Follow-up
COMPLETED
34
31
Period From Third to Fourth Follow-up
NOT COMPLETED
0
0
Period at Fourth Follow-up
STARTED
34
31
Period at Fourth Follow-up
COMPLETED
34
31
Period at Fourth Follow-up
NOT COMPLETED
0
0

Reasons for withdrawal

Reasons for withdrawal
Measure
Fish Oil Supplementation
This group receive 2.5 g/day (two 1.25-g capsules daily) of fish oil (marine-derived n-3 PUFA) for 4 consecutive months. Fish oil supplementation: Participants of this randomized double-blind placebo-controlled trial include 70 healthy Chinese adults. The investigators randomly assign participants to two parallel groups at baseline using a random-number table. Compliance is determined by directly observed supplement intake. Participants in fish oil group are assigned to receive 2.5 g/day in divided doses. Each capsule contains 60% n-3 PUFA \[24% docosahexanoic acid (C22:6 n-3 DHA) and 36% eicosapentaenoic acid (C20:5 n-3 EPA)\].
Sunflower Seed Oil Supplementation
This group receive 2.5 g/day (two 1.25-g capsules daily) of placebo (sunflower seed oil) for 4 consecutive months. Sunflower seed oil supplementation: Participants of this randomized double-blind placebo-controlled trial include 70 healthy Chinese adults. The investigators randomly assign participants to two parallel groups at baseline using a random-number table. Compliance is determined by directly observed supplement intake. Participants in sunflower seed oil group receive 2.5 g/day in divided doses, and the capsules are identical as the fish oil capsules. Each capsule containes 14.4% palmitic acid (C16:0), 16.0% oleic acid (C18:1 n-9), and 57.6% linoleic acid (C18:2 n-6).
Periodfrom Enrollment to First Follow-up
Withdrawal by Subject
1
3
Period From First to Second Follow-up
Withdrawal by Subject
0
1

Baseline Characteristics

Effect of Dietary Supplemental Fish Oil in Alleviating Health Hazards Associated With Air Pollution

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Fish Oil Supplementation
n=34 Participants
This group receive 2.5 g/day (two 1.25-g capsules daily) of fish oil (marine-derived n-3 PUFA) for 4 consecutive months. Fish oil supplementation: Participants of this randomized double-blind placebo-controlled trial include 70 healthy Chinese adults. The investigators randomly assign participants to two parallel groups at baseline using a random-number table. Compliance is determined by directly observed supplement intake. Participants in fish oil group are assigned to receive 2.5 g/day in divided doses. Each capsule contains 60% n-3 PUFA \[24% docosahexanoic acid (C22:6 n-3 DHA) and 36% eicosapentaenoic acid (C20:5 n-3 EPA)\].
Sunflower Seed Oil Supplementation
n=31 Participants
This group receive 2.5 g/day (two 1.25-g capsules daily) of placebo (sunflower seed oil) for 4 consecutive months. Sunflower seed oil supplementation: Participants of this randomized double-blind placebo-controlled trial include 70 healthy Chinese adults. The investigators randomly assign participants to two parallel groups at baseline using a random-number table. Compliance is determined by directly observed supplement intake. Participants in sunflower seed oil group receive 2.5 g/day in divided doses, and the capsules are identical as the fish oil capsules. Each capsule containes 14.4% palmitic acid (C16:0), 16.0% oleic acid (C18:1 n-9), and 57.6% linoleic acid (C18:2 n-6).
Total
n=65 Participants
Total of all reporting groups
Age, Continuous
23.03 years
STANDARD_DEVIATION 2.26 • n=5 Participants
22.87 years
STANDARD_DEVIATION 1.28 • n=7 Participants
22.95 years
STANDARD_DEVIATION 1.85 • n=5 Participants
Sex: Female, Male
Female
20 Participants
n=5 Participants
18 Participants
n=7 Participants
38 Participants
n=5 Participants
Sex: Female, Male
Male
14 Participants
n=5 Participants
13 Participants
n=7 Participants
27 Participants
n=5 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
Race (NIH/OMB)
Asian
34 Participants
n=5 Participants
31 Participants
n=7 Participants
65 Participants
n=5 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
Race (NIH/OMB)
Black or African American
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
Race (NIH/OMB)
White
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
Race (NIH/OMB)
More than one race
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
Region of Enrollment
China
34 participants
n=5 Participants
31 participants
n=7 Participants
65 participants
n=5 Participants
Body mass index
21.73 kg/m^2
STANDARD_DEVIATION 3.23 • n=5 Participants
21.56 kg/m^2
STANDARD_DEVIATION 3.02 • n=7 Participants
21.65 kg/m^2
STANDARD_DEVIATION 3.10 • n=5 Participants
Physical activity
Never
31 Participants
n=5 Participants
27 Participants
n=7 Participants
58 Participants
n=5 Participants
Physical activity
Mild
2 Participants
n=5 Participants
3 Participants
n=7 Participants
5 Participants
n=5 Participants
Physical activity
Moderate
1 Participants
n=5 Participants
1 Participants
n=7 Participants
2 Participants
n=5 Participants
Physical activity
Vigorous
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants

PRIMARY outcome

Timeframe: Blood samples are obtained at the end of each round of 4 follow-ups with an interval of 2 weeks in the last 2 months of intervention.

Peripheral blood samples (5 ml) were drawn, separated into serum, and stored at -80 ℃ within 30 minutes. We measure 2 biomarkers of antioxidant activity, including TAC and SOD. The values in the following Outcome Measure Data Table refer to the means of measurements at 4 follow-ups.

Outcome measures

Outcome measures
Measure
Fish Oil Supplementation
n=34 Participants
This group receive 2.5 g/day (two 1.25-g capsules daily) of fish oil (marine-derived n-3 PUFA) for 4 consecutive months. Fish oil supplementation: Participants of this randomized double-blind placebo-controlled trial include 70 healthy Chinese adults. The investigators randomly assign participants to two parallel groups at baseline using a random-number table. Compliance is determined by directly observed supplement intake. Participants in fish oil group are assigned to receive 2.5 g/day in divided doses. Each capsule contains 60% n-3 PUFA \[24% docosahexanoic acid (C22:6 n-3 DHA) and 36% eicosapentaenoic acid (C20:5 n-3 EPA)\].
Sunflower Seed Oil Supplementation
n=31 Participants
This group receive 2.5 g/day (two 1.25-g capsules daily) of placebo (sunflower seed oil) for 4 consecutive months. Sunflower seed oil supplementation: Participants of this randomized double-blind placebo-controlled trial include 70 healthy Chinese adults. The investigators randomly assign participants to two parallel groups at baseline using a random-number table. Compliance is determined by directly observed supplement intake. Participants in sunflower seed oil group receive 2.5 g/day in divided doses, and the capsules are identical as the fish oil capsules. Each capsule containes 14.4% palmitic acid (C16:0), 16.0% oleic acid (C18:1 n-9), and 57.6% linoleic acid (C18:2 n-6).
Biomarkers of Antioxidant Activity-Total Antioxidant Capacity (TAC) and Superoxide Dismutase (SOD)
TAC
6.09 U/ml
Standard Deviation 2.15
5.80 U/ml
Standard Deviation 2.36
Biomarkers of Antioxidant Activity-Total Antioxidant Capacity (TAC) and Superoxide Dismutase (SOD)
SOD
364.34 U/ml
Standard Deviation 42.69
356.59 U/ml
Standard Deviation 43.90

PRIMARY outcome

Timeframe: Blood samples are obtained at the end of each round of 4 follow-ups with an interval of 2 weeks in the last 2 months of intervention.

2 inflammatory biomarkers in our study including IL-6 and TNF-α are measured. The values in the following Outcome Measure Data Table refer to the means of measurements at 4 follow-ups.

Outcome measures

Outcome measures
Measure
Fish Oil Supplementation
n=34 Participants
This group receive 2.5 g/day (two 1.25-g capsules daily) of fish oil (marine-derived n-3 PUFA) for 4 consecutive months. Fish oil supplementation: Participants of this randomized double-blind placebo-controlled trial include 70 healthy Chinese adults. The investigators randomly assign participants to two parallel groups at baseline using a random-number table. Compliance is determined by directly observed supplement intake. Participants in fish oil group are assigned to receive 2.5 g/day in divided doses. Each capsule contains 60% n-3 PUFA \[24% docosahexanoic acid (C22:6 n-3 DHA) and 36% eicosapentaenoic acid (C20:5 n-3 EPA)\].
Sunflower Seed Oil Supplementation
n=31 Participants
This group receive 2.5 g/day (two 1.25-g capsules daily) of placebo (sunflower seed oil) for 4 consecutive months. Sunflower seed oil supplementation: Participants of this randomized double-blind placebo-controlled trial include 70 healthy Chinese adults. The investigators randomly assign participants to two parallel groups at baseline using a random-number table. Compliance is determined by directly observed supplement intake. Participants in sunflower seed oil group receive 2.5 g/day in divided doses, and the capsules are identical as the fish oil capsules. Each capsule containes 14.4% palmitic acid (C16:0), 16.0% oleic acid (C18:1 n-9), and 57.6% linoleic acid (C18:2 n-6).
Biomarkers of Inflammation-Interleukin-6 (IL-6) and Tumour Necrosis Factor-α (TNF-α)
IL-6
0.72 pg/ml
Standard Deviation 0.63
1.76 pg/ml
Standard Deviation 5.75
Biomarkers of Inflammation-Interleukin-6 (IL-6) and Tumour Necrosis Factor-α (TNF-α)
TNF-α
0.35 pg/ml
Standard Deviation 0.47
0.54 pg/ml
Standard Deviation 1.42

PRIMARY outcome

Timeframe: Blood samples are obtained at the end of each round of 4 follow-ups with an interval of 2 weeks in the last 2 months of intervention.

We measure vWF level in serum, one of the measured cogulation biomarkers in our study. The values in the following Outcome Measure Data Table refer to the means of measurements at 4 follow-ups.

Outcome measures

Outcome measures
Measure
Fish Oil Supplementation
n=34 Participants
This group receive 2.5 g/day (two 1.25-g capsules daily) of fish oil (marine-derived n-3 PUFA) for 4 consecutive months. Fish oil supplementation: Participants of this randomized double-blind placebo-controlled trial include 70 healthy Chinese adults. The investigators randomly assign participants to two parallel groups at baseline using a random-number table. Compliance is determined by directly observed supplement intake. Participants in fish oil group are assigned to receive 2.5 g/day in divided doses. Each capsule contains 60% n-3 PUFA \[24% docosahexanoic acid (C22:6 n-3 DHA) and 36% eicosapentaenoic acid (C20:5 n-3 EPA)\].
Sunflower Seed Oil Supplementation
n=31 Participants
This group receive 2.5 g/day (two 1.25-g capsules daily) of placebo (sunflower seed oil) for 4 consecutive months. Sunflower seed oil supplementation: Participants of this randomized double-blind placebo-controlled trial include 70 healthy Chinese adults. The investigators randomly assign participants to two parallel groups at baseline using a random-number table. Compliance is determined by directly observed supplement intake. Participants in sunflower seed oil group receive 2.5 g/day in divided doses, and the capsules are identical as the fish oil capsules. Each capsule containes 14.4% palmitic acid (C16:0), 16.0% oleic acid (C18:1 n-9), and 57.6% linoleic acid (C18:2 n-6).
Cogulation Biomarker-von Willebrand Factor (vWF)
1669.70 mIU/ml
Standard Deviation 1022.98
2144.30 mIU/ml
Standard Deviation 1674.32

PRIMARY outcome

Timeframe: Blood samples are obtained at the end of each round of 4 follow-ups with an interval of 2 weeks in the last 2 months of intervention.

We measure endothelial function biomarkers, including E-selectin and endothelial nitric oxide synthase (eNOS), and 4 stress hormones, including corticotropin releasing hormone (CRH), adrenocorticotropic hormone (ACTH), cortisol and serotonin. The values in the following Outcome Measure Data Table refer to the means of measurements at 4 follow-ups.

Outcome measures

Outcome measures
Measure
Fish Oil Supplementation
n=34 Participants
This group receive 2.5 g/day (two 1.25-g capsules daily) of fish oil (marine-derived n-3 PUFA) for 4 consecutive months. Fish oil supplementation: Participants of this randomized double-blind placebo-controlled trial include 70 healthy Chinese adults. The investigators randomly assign participants to two parallel groups at baseline using a random-number table. Compliance is determined by directly observed supplement intake. Participants in fish oil group are assigned to receive 2.5 g/day in divided doses. Each capsule contains 60% n-3 PUFA \[24% docosahexanoic acid (C22:6 n-3 DHA) and 36% eicosapentaenoic acid (C20:5 n-3 EPA)\].
Sunflower Seed Oil Supplementation
n=31 Participants
This group receive 2.5 g/day (two 1.25-g capsules daily) of placebo (sunflower seed oil) for 4 consecutive months. Sunflower seed oil supplementation: Participants of this randomized double-blind placebo-controlled trial include 70 healthy Chinese adults. The investigators randomly assign participants to two parallel groups at baseline using a random-number table. Compliance is determined by directly observed supplement intake. Participants in sunflower seed oil group receive 2.5 g/day in divided doses, and the capsules are identical as the fish oil capsules. Each capsule containes 14.4% palmitic acid (C16:0), 16.0% oleic acid (C18:1 n-9), and 57.6% linoleic acid (C18:2 n-6).
Biomarkers of Endothelial Function and Stress Hormone
serotonin
153.56 ng/ml
Standard Deviation 63.89
151.17 ng/ml
Standard Deviation 61.63
Biomarkers of Endothelial Function and Stress Hormone
eNOS
5.99 ng/ml
Standard Deviation 9.19
4.29 ng/ml
Standard Deviation 7.55
Biomarkers of Endothelial Function and Stress Hormone
CRH
2.96 ng/ml
Standard Deviation 0.48
3.06 ng/ml
Standard Deviation 0.47
Biomarkers of Endothelial Function and Stress Hormone
Cortisol
168.01 ng/ml
Standard Deviation 48.62
184.49 ng/ml
Standard Deviation 68.42
Biomarkers of Endothelial Function and Stress Hormone
ACTH
0.34 ng/ml
Standard Deviation 0.10
0.39 ng/ml
Standard Deviation 0.12
Biomarkers of Endothelial Function and Stress Hormone
E-selectin
12.23 ng/ml
Standard Deviation 5.38
14.16 ng/ml
Standard Deviation 6.81

PRIMARY outcome

Timeframe: Blood samples are obtained at the end of each round of 4 follow-ups with an interval of 2 weeks in the last 2 months of intervention.

We measure ET-1 level in serum, an endothelial function biomarker. The values in the following Outcome Measure Data Table refer to the means of measurements at 4 follow-ups.

Outcome measures

Outcome measures
Measure
Fish Oil Supplementation
n=34 Participants
This group receive 2.5 g/day (two 1.25-g capsules daily) of fish oil (marine-derived n-3 PUFA) for 4 consecutive months. Fish oil supplementation: Participants of this randomized double-blind placebo-controlled trial include 70 healthy Chinese adults. The investigators randomly assign participants to two parallel groups at baseline using a random-number table. Compliance is determined by directly observed supplement intake. Participants in fish oil group are assigned to receive 2.5 g/day in divided doses. Each capsule contains 60% n-3 PUFA \[24% docosahexanoic acid (C22:6 n-3 DHA) and 36% eicosapentaenoic acid (C20:5 n-3 EPA)\].
Sunflower Seed Oil Supplementation
n=31 Participants
This group receive 2.5 g/day (two 1.25-g capsules daily) of placebo (sunflower seed oil) for 4 consecutive months. Sunflower seed oil supplementation: Participants of this randomized double-blind placebo-controlled trial include 70 healthy Chinese adults. The investigators randomly assign participants to two parallel groups at baseline using a random-number table. Compliance is determined by directly observed supplement intake. Participants in sunflower seed oil group receive 2.5 g/day in divided doses, and the capsules are identical as the fish oil capsules. Each capsule containes 14.4% palmitic acid (C16:0), 16.0% oleic acid (C18:1 n-9), and 57.6% linoleic acid (C18:2 n-6).
Endothelial Function Biomarker-Endothelin-1(ET-1)
1.80 pg/ml
Standard Deviation 2.26
2.82 pg/ml
Standard Deviation 4.92

PRIMARY outcome

Timeframe: Blood samples are obtained at the end of each round of 4 follow-ups with an interval of 2 weeks in the last 2 months of intervention.

We measure the serum level of fibrinogen, one of the two measured cogulation biomarkers in our study. The values in the following Outcome Measure Data Table refer to the means of measurements at 4 follow-ups.

Outcome measures

Outcome measures
Measure
Fish Oil Supplementation
n=34 Participants
This group receive 2.5 g/day (two 1.25-g capsules daily) of fish oil (marine-derived n-3 PUFA) for 4 consecutive months. Fish oil supplementation: Participants of this randomized double-blind placebo-controlled trial include 70 healthy Chinese adults. The investigators randomly assign participants to two parallel groups at baseline using a random-number table. Compliance is determined by directly observed supplement intake. Participants in fish oil group are assigned to receive 2.5 g/day in divided doses. Each capsule contains 60% n-3 PUFA \[24% docosahexanoic acid (C22:6 n-3 DHA) and 36% eicosapentaenoic acid (C20:5 n-3 EPA)\].
Sunflower Seed Oil Supplementation
n=31 Participants
This group receive 2.5 g/day (two 1.25-g capsules daily) of placebo (sunflower seed oil) for 4 consecutive months. Sunflower seed oil supplementation: Participants of this randomized double-blind placebo-controlled trial include 70 healthy Chinese adults. The investigators randomly assign participants to two parallel groups at baseline using a random-number table. Compliance is determined by directly observed supplement intake. Participants in sunflower seed oil group receive 2.5 g/day in divided doses, and the capsules are identical as the fish oil capsules. Each capsule containes 14.4% palmitic acid (C16:0), 16.0% oleic acid (C18:1 n-9), and 57.6% linoleic acid (C18:2 n-6).
Cogulation Biomarker-Fibrinogen
2.25 µg/ml
Standard Deviation 1.06
2.63 µg/ml
Standard Deviation 1.28

PRIMARY outcome

Timeframe: Blood samples are obtained at the end of each round of 4 follow-ups with an interval of 2 weeks in the last 2 months of intervention.

The serum levels of hs-CRP are measured. The values in the following Outcome Measure Data Table refer to the means of measurements at 4 follow-ups.

Outcome measures

Outcome measures
Measure
Fish Oil Supplementation
n=34 Participants
This group receive 2.5 g/day (two 1.25-g capsules daily) of fish oil (marine-derived n-3 PUFA) for 4 consecutive months. Fish oil supplementation: Participants of this randomized double-blind placebo-controlled trial include 70 healthy Chinese adults. The investigators randomly assign participants to two parallel groups at baseline using a random-number table. Compliance is determined by directly observed supplement intake. Participants in fish oil group are assigned to receive 2.5 g/day in divided doses. Each capsule contains 60% n-3 PUFA \[24% docosahexanoic acid (C22:6 n-3 DHA) and 36% eicosapentaenoic acid (C20:5 n-3 EPA)\].
Sunflower Seed Oil Supplementation
n=31 Participants
This group receive 2.5 g/day (two 1.25-g capsules daily) of placebo (sunflower seed oil) for 4 consecutive months. Sunflower seed oil supplementation: Participants of this randomized double-blind placebo-controlled trial include 70 healthy Chinese adults. The investigators randomly assign participants to two parallel groups at baseline using a random-number table. Compliance is determined by directly observed supplement intake. Participants in sunflower seed oil group receive 2.5 g/day in divided doses, and the capsules are identical as the fish oil capsules. Each capsule containes 14.4% palmitic acid (C16:0), 16.0% oleic acid (C18:1 n-9), and 57.6% linoleic acid (C18:2 n-6).
High-sensitivity C-reactive Protein (Hs-CRP)-an Inflammatory Biomarker
12.81 µg/ml
Standard Deviation 19.91
19.93 µg/ml
Standard Deviation 30.03

PRIMARY outcome

Timeframe: Blood samples are obtained at the end of each round of 4 follow-ups with an interval of 2 weeks in the last 2 months of intervention.

Peripheral blood samples (5 ml) were drawn, separated into serum, and stored at -80 ℃ within 30 minutes. We measure the serum level of ox-LDL. The values in the following Outcome Measure Data Table refer to the means of measurements at 4 follow-ups.

Outcome measures

Outcome measures
Measure
Fish Oil Supplementation
n=34 Participants
This group receive 2.5 g/day (two 1.25-g capsules daily) of fish oil (marine-derived n-3 PUFA) for 4 consecutive months. Fish oil supplementation: Participants of this randomized double-blind placebo-controlled trial include 70 healthy Chinese adults. The investigators randomly assign participants to two parallel groups at baseline using a random-number table. Compliance is determined by directly observed supplement intake. Participants in fish oil group are assigned to receive 2.5 g/day in divided doses. Each capsule contains 60% n-3 PUFA \[24% docosahexanoic acid (C22:6 n-3 DHA) and 36% eicosapentaenoic acid (C20:5 n-3 EPA)\].
Sunflower Seed Oil Supplementation
n=31 Participants
This group receive 2.5 g/day (two 1.25-g capsules daily) of placebo (sunflower seed oil) for 4 consecutive months. Sunflower seed oil supplementation: Participants of this randomized double-blind placebo-controlled trial include 70 healthy Chinese adults. The investigators randomly assign participants to two parallel groups at baseline using a random-number table. Compliance is determined by directly observed supplement intake. Participants in sunflower seed oil group receive 2.5 g/day in divided doses, and the capsules are identical as the fish oil capsules. Each capsule containes 14.4% palmitic acid (C16:0), 16.0% oleic acid (C18:1 n-9), and 57.6% linoleic acid (C18:2 n-6).
Oxidized Low Density Lipoprotein (Ox-LDL)-an Oxidative Stress Biomarker
34.74 U/L
Standard Deviation 9.85
40.11 U/L
Standard Deviation 22.83

PRIMARY outcome

Timeframe: Blood samples are obtained at the end of each round of 4 follow-ups with an interval of 2 weeks in the last 2 months of intervention.

Peripheral blood samples (5 ml) were drawn, separated into serum, and stored at -80 ℃ within 30 minutes. We also measure GSH-Px. The values in the following Outcome Measure Data Table refer to the means of measurements at 4 follow-ups.

Outcome measures

Outcome measures
Measure
Fish Oil Supplementation
n=34 Participants
This group receive 2.5 g/day (two 1.25-g capsules daily) of fish oil (marine-derived n-3 PUFA) for 4 consecutive months. Fish oil supplementation: Participants of this randomized double-blind placebo-controlled trial include 70 healthy Chinese adults. The investigators randomly assign participants to two parallel groups at baseline using a random-number table. Compliance is determined by directly observed supplement intake. Participants in fish oil group are assigned to receive 2.5 g/day in divided doses. Each capsule contains 60% n-3 PUFA \[24% docosahexanoic acid (C22:6 n-3 DHA) and 36% eicosapentaenoic acid (C20:5 n-3 EPA)\].
Sunflower Seed Oil Supplementation
n=31 Participants
This group receive 2.5 g/day (two 1.25-g capsules daily) of placebo (sunflower seed oil) for 4 consecutive months. Sunflower seed oil supplementation: Participants of this randomized double-blind placebo-controlled trial include 70 healthy Chinese adults. The investigators randomly assign participants to two parallel groups at baseline using a random-number table. Compliance is determined by directly observed supplement intake. Participants in sunflower seed oil group receive 2.5 g/day in divided doses, and the capsules are identical as the fish oil capsules. Each capsule containes 14.4% palmitic acid (C16:0), 16.0% oleic acid (C18:1 n-9), and 57.6% linoleic acid (C18:2 n-6).
Glutathione Peroxidase (GSH-Px)-a Biomarker of Antioxidant Activity
625.95 mU/ml
Standard Deviation 157.42
581.51 mU/ml
Standard Deviation 171.92

PRIMARY outcome

Timeframe: Blood samples are obtained at the end of each round of 4 follow-ups with an interval of 2 weeks in the last 2 months of intervention.

Peripheral blood samples (5 ml) were drawn, separated into serum, and stored at -80 ℃ within 30 minutes. We measure the serum level of LPO. The values in the following Outcome Measure Data Table refer to the means of measurements at 4 follow-ups.

Outcome measures

Outcome measures
Measure
Fish Oil Supplementation
n=34 Participants
This group receive 2.5 g/day (two 1.25-g capsules daily) of fish oil (marine-derived n-3 PUFA) for 4 consecutive months. Fish oil supplementation: Participants of this randomized double-blind placebo-controlled trial include 70 healthy Chinese adults. The investigators randomly assign participants to two parallel groups at baseline using a random-number table. Compliance is determined by directly observed supplement intake. Participants in fish oil group are assigned to receive 2.5 g/day in divided doses. Each capsule contains 60% n-3 PUFA \[24% docosahexanoic acid (C22:6 n-3 DHA) and 36% eicosapentaenoic acid (C20:5 n-3 EPA)\].
Sunflower Seed Oil Supplementation
n=31 Participants
This group receive 2.5 g/day (two 1.25-g capsules daily) of placebo (sunflower seed oil) for 4 consecutive months. Sunflower seed oil supplementation: Participants of this randomized double-blind placebo-controlled trial include 70 healthy Chinese adults. The investigators randomly assign participants to two parallel groups at baseline using a random-number table. Compliance is determined by directly observed supplement intake. Participants in sunflower seed oil group receive 2.5 g/day in divided doses, and the capsules are identical as the fish oil capsules. Each capsule containes 14.4% palmitic acid (C16:0), 16.0% oleic acid (C18:1 n-9), and 57.6% linoleic acid (C18:2 n-6).
Serum Level of Lipid Peroxidation (LPO)-a Biomarker of Oxdative Stress
0.54 µg/ml
Standard Deviation 0.15
0.58 µg/ml
Standard Deviation 0.17

SECONDARY outcome

Timeframe: Blood pressure are measured at the end of each round of 4 follow-ups with an interval of 2 weeks in the last 2 months of intervention.

After sitting in a quiet room for at least 5 min, participants had their left upper arm blood pressure measured by trained technicians using an electronic sphygmomanometer at least three times with 3-min minimum intervals between measurements. The second and third sets of readings were averaged to obtain systolic BP (SBP) and diastolic BP (DBP). If the differences among the three measurements were bigger than 5 mmHg, a new round of measurements was arranged. The values in the following Outcome Measure Data Table refer to the means of measurements at 4 follow-ups.

Outcome measures

Outcome measures
Measure
Fish Oil Supplementation
n=34 Participants
This group receive 2.5 g/day (two 1.25-g capsules daily) of fish oil (marine-derived n-3 PUFA) for 4 consecutive months. Fish oil supplementation: Participants of this randomized double-blind placebo-controlled trial include 70 healthy Chinese adults. The investigators randomly assign participants to two parallel groups at baseline using a random-number table. Compliance is determined by directly observed supplement intake. Participants in fish oil group are assigned to receive 2.5 g/day in divided doses. Each capsule contains 60% n-3 PUFA \[24% docosahexanoic acid (C22:6 n-3 DHA) and 36% eicosapentaenoic acid (C20:5 n-3 EPA)\].
Sunflower Seed Oil Supplementation
n=31 Participants
This group receive 2.5 g/day (two 1.25-g capsules daily) of placebo (sunflower seed oil) for 4 consecutive months. Sunflower seed oil supplementation: Participants of this randomized double-blind placebo-controlled trial include 70 healthy Chinese adults. The investigators randomly assign participants to two parallel groups at baseline using a random-number table. Compliance is determined by directly observed supplement intake. Participants in sunflower seed oil group receive 2.5 g/day in divided doses, and the capsules are identical as the fish oil capsules. Each capsule containes 14.4% palmitic acid (C16:0), 16.0% oleic acid (C18:1 n-9), and 57.6% linoleic acid (C18:2 n-6).
Blood Pressure
SBP
110.01 mmHg
Standard Deviation 11.39
111.55 mmHg
Standard Deviation 10.89
Blood Pressure
DBP
67.20 mmHg
Standard Deviation 6.05
67.29 mmHg
Standard Deviation 7.97

SECONDARY outcome

Timeframe: Blood samples are obtained at the end of each round of 4 follow-ups with an interval of 2 weeks in the last 2 months of intervention.

The biomarker of insulin resistance is measured, calculated by fasting glucose and fasting insulin using the formula of \[fasting insulin (mU/L) × fasting glucose (mmol/L)\]/22.5. The values in the following Outcome Measure Data Table refer to the means of measurements at 4 follow-ups.

Outcome measures

Outcome measures
Measure
Fish Oil Supplementation
n=34 Participants
This group receive 2.5 g/day (two 1.25-g capsules daily) of fish oil (marine-derived n-3 PUFA) for 4 consecutive months. Fish oil supplementation: Participants of this randomized double-blind placebo-controlled trial include 70 healthy Chinese adults. The investigators randomly assign participants to two parallel groups at baseline using a random-number table. Compliance is determined by directly observed supplement intake. Participants in fish oil group are assigned to receive 2.5 g/day in divided doses. Each capsule contains 60% n-3 PUFA \[24% docosahexanoic acid (C22:6 n-3 DHA) and 36% eicosapentaenoic acid (C20:5 n-3 EPA)\].
Sunflower Seed Oil Supplementation
n=31 Participants
This group receive 2.5 g/day (two 1.25-g capsules daily) of placebo (sunflower seed oil) for 4 consecutive months. Sunflower seed oil supplementation: Participants of this randomized double-blind placebo-controlled trial include 70 healthy Chinese adults. The investigators randomly assign participants to two parallel groups at baseline using a random-number table. Compliance is determined by directly observed supplement intake. Participants in sunflower seed oil group receive 2.5 g/day in divided doses, and the capsules are identical as the fish oil capsules. Each capsule containes 14.4% palmitic acid (C16:0), 16.0% oleic acid (C18:1 n-9), and 57.6% linoleic acid (C18:2 n-6).
Insulin Resistance
1.40 mmol/L × mU/L
Standard Deviation 0.94
1.42 mmol/L × mU/L
Standard Deviation 0.91

SECONDARY outcome

Timeframe: Skin samplings are obtained at the end of each round of 4 follow-ups with an interval of 2 weeks in the last 2 months of intervention.

2 infammation biomarkers from skin samplings are measured, including interleukin-1 Alpha (IL-1α) and Interleukin-1 receptor antagonist (IL-1Rα). The values in the following Outcome Measure Data Table refer to the means of measurements at 4 follow-ups.

Outcome measures

Outcome measures
Measure
Fish Oil Supplementation
n=34 Participants
This group receive 2.5 g/day (two 1.25-g capsules daily) of fish oil (marine-derived n-3 PUFA) for 4 consecutive months. Fish oil supplementation: Participants of this randomized double-blind placebo-controlled trial include 70 healthy Chinese adults. The investigators randomly assign participants to two parallel groups at baseline using a random-number table. Compliance is determined by directly observed supplement intake. Participants in fish oil group are assigned to receive 2.5 g/day in divided doses. Each capsule contains 60% n-3 PUFA \[24% docosahexanoic acid (C22:6 n-3 DHA) and 36% eicosapentaenoic acid (C20:5 n-3 EPA)\].
Sunflower Seed Oil Supplementation
n=31 Participants
This group receive 2.5 g/day (two 1.25-g capsules daily) of placebo (sunflower seed oil) for 4 consecutive months. Sunflower seed oil supplementation: Participants of this randomized double-blind placebo-controlled trial include 70 healthy Chinese adults. The investigators randomly assign participants to two parallel groups at baseline using a random-number table. Compliance is determined by directly observed supplement intake. Participants in sunflower seed oil group receive 2.5 g/day in divided doses, and the capsules are identical as the fish oil capsules. Each capsule containes 14.4% palmitic acid (C16:0), 16.0% oleic acid (C18:1 n-9), and 57.6% linoleic acid (C18:2 n-6).
Skin Inflammation Biomarkers
IL-1α
184.49 pg/ml
Standard Deviation 107.31
230.90 pg/ml
Standard Deviation 163.97
Skin Inflammation Biomarkers
IL-1Rα
54.00 pg/ml
Standard Deviation 93.48
42.00 pg/ml
Standard Deviation 119.54

SECONDARY outcome

Timeframe: Skin samplings are obtained at the end of each round of 4 follow-ups with an interval of 2 weeks in the last 2 months.

oxidative stress biomarker in skin samplings includes carbonyl protein. The values in the following Outcome Measure Data Table refer to the means of measurements at 4 follow-ups.

Outcome measures

Outcome measures
Measure
Fish Oil Supplementation
n=34 Participants
This group receive 2.5 g/day (two 1.25-g capsules daily) of fish oil (marine-derived n-3 PUFA) for 4 consecutive months. Fish oil supplementation: Participants of this randomized double-blind placebo-controlled trial include 70 healthy Chinese adults. The investigators randomly assign participants to two parallel groups at baseline using a random-number table. Compliance is determined by directly observed supplement intake. Participants in fish oil group are assigned to receive 2.5 g/day in divided doses. Each capsule contains 60% n-3 PUFA \[24% docosahexanoic acid (C22:6 n-3 DHA) and 36% eicosapentaenoic acid (C20:5 n-3 EPA)\].
Sunflower Seed Oil Supplementation
n=31 Participants
This group receive 2.5 g/day (two 1.25-g capsules daily) of placebo (sunflower seed oil) for 4 consecutive months. Sunflower seed oil supplementation: Participants of this randomized double-blind placebo-controlled trial include 70 healthy Chinese adults. The investigators randomly assign participants to two parallel groups at baseline using a random-number table. Compliance is determined by directly observed supplement intake. Participants in sunflower seed oil group receive 2.5 g/day in divided doses, and the capsules are identical as the fish oil capsules. Each capsule containes 14.4% palmitic acid (C16:0), 16.0% oleic acid (C18:1 n-9), and 57.6% linoleic acid (C18:2 n-6).
Skin Oxidative Stress Biomarker-Carbonyl Protein
35.93 µg/ml
Standard Deviation 15.37
44.89 µg/ml
Standard Deviation 24.01

SECONDARY outcome

Timeframe: Lung function is measured at the end of each round of 4 follow-ups with an interval of 2 weeks in the last 2 months of intervention.

Indicators of lung function include forced vital capacity (FVC) and andforced expiratory volume in 1 second (FEV1). The values in the Outcome Measure Data Table refer to the means of measurements at 4 follow-ups.

Outcome measures

Outcome measures
Measure
Fish Oil Supplementation
n=34 Participants
This group receive 2.5 g/day (two 1.25-g capsules daily) of fish oil (marine-derived n-3 PUFA) for 4 consecutive months. Fish oil supplementation: Participants of this randomized double-blind placebo-controlled trial include 70 healthy Chinese adults. The investigators randomly assign participants to two parallel groups at baseline using a random-number table. Compliance is determined by directly observed supplement intake. Participants in fish oil group are assigned to receive 2.5 g/day in divided doses. Each capsule contains 60% n-3 PUFA \[24% docosahexanoic acid (C22:6 n-3 DHA) and 36% eicosapentaenoic acid (C20:5 n-3 EPA)\].
Sunflower Seed Oil Supplementation
n=31 Participants
This group receive 2.5 g/day (two 1.25-g capsules daily) of placebo (sunflower seed oil) for 4 consecutive months. Sunflower seed oil supplementation: Participants of this randomized double-blind placebo-controlled trial include 70 healthy Chinese adults. The investigators randomly assign participants to two parallel groups at baseline using a random-number table. Compliance is determined by directly observed supplement intake. Participants in sunflower seed oil group receive 2.5 g/day in divided doses, and the capsules are identical as the fish oil capsules. Each capsule containes 14.4% palmitic acid (C16:0), 16.0% oleic acid (C18:1 n-9), and 57.6% linoleic acid (C18:2 n-6).
Lung Function-Forced Vital Capacity (FVC) and Forced Expiratory Volume in 1 Second (FEV1)
FVC
3.18 L
Standard Deviation 0.48
3.16 L
Standard Deviation 0.62
Lung Function-Forced Vital Capacity (FVC) and Forced Expiratory Volume in 1 Second (FEV1)
FEV1
3.75 L
Standard Deviation 0.64
3.73 L
Standard Deviation 0.87

SECONDARY outcome

Timeframe: Lung function is measured at the end of each round of 4 follow-ups with an interval of 2 weeks in the last 2 months of intervention.

Additional indicator of lung function includes peak expiratory flow (PEF). The values in the Outcome Measure Data Table refer to the means of measurements at 4 follow-ups.

Outcome measures

Outcome measures
Measure
Fish Oil Supplementation
n=34 Participants
This group receive 2.5 g/day (two 1.25-g capsules daily) of fish oil (marine-derived n-3 PUFA) for 4 consecutive months. Fish oil supplementation: Participants of this randomized double-blind placebo-controlled trial include 70 healthy Chinese adults. The investigators randomly assign participants to two parallel groups at baseline using a random-number table. Compliance is determined by directly observed supplement intake. Participants in fish oil group are assigned to receive 2.5 g/day in divided doses. Each capsule contains 60% n-3 PUFA \[24% docosahexanoic acid (C22:6 n-3 DHA) and 36% eicosapentaenoic acid (C20:5 n-3 EPA)\].
Sunflower Seed Oil Supplementation
n=31 Participants
This group receive 2.5 g/day (two 1.25-g capsules daily) of placebo (sunflower seed oil) for 4 consecutive months. Sunflower seed oil supplementation: Participants of this randomized double-blind placebo-controlled trial include 70 healthy Chinese adults. The investigators randomly assign participants to two parallel groups at baseline using a random-number table. Compliance is determined by directly observed supplement intake. Participants in sunflower seed oil group receive 2.5 g/day in divided doses, and the capsules are identical as the fish oil capsules. Each capsule containes 14.4% palmitic acid (C16:0), 16.0% oleic acid (C18:1 n-9), and 57.6% linoleic acid (C18:2 n-6).
Lung Function-Peak Expiratory Flow (PEF)
6.55 L/s
Standard Deviation 1.44
6.38 L/s
Standard Deviation 1.60

SECONDARY outcome

Timeframe: Skin samplings are obtained at the end of each round of 4 follow-ups with an interval of 2 weeks in the last 2 months.

we measure TAC level, an antioxidant biomarker in skin samplings. The values in the following Outcome Measure Data Table refer to the means of measurements at 4 follow-ups.

Outcome measures

Outcome measures
Measure
Fish Oil Supplementation
n=34 Participants
This group receive 2.5 g/day (two 1.25-g capsules daily) of fish oil (marine-derived n-3 PUFA) for 4 consecutive months. Fish oil supplementation: Participants of this randomized double-blind placebo-controlled trial include 70 healthy Chinese adults. The investigators randomly assign participants to two parallel groups at baseline using a random-number table. Compliance is determined by directly observed supplement intake. Participants in fish oil group are assigned to receive 2.5 g/day in divided doses. Each capsule contains 60% n-3 PUFA \[24% docosahexanoic acid (C22:6 n-3 DHA) and 36% eicosapentaenoic acid (C20:5 n-3 EPA)\].
Sunflower Seed Oil Supplementation
n=31 Participants
This group receive 2.5 g/day (two 1.25-g capsules daily) of placebo (sunflower seed oil) for 4 consecutive months. Sunflower seed oil supplementation: Participants of this randomized double-blind placebo-controlled trial include 70 healthy Chinese adults. The investigators randomly assign participants to two parallel groups at baseline using a random-number table. Compliance is determined by directly observed supplement intake. Participants in sunflower seed oil group receive 2.5 g/day in divided doses, and the capsules are identical as the fish oil capsules. Each capsule containes 14.4% palmitic acid (C16:0), 16.0% oleic acid (C18:1 n-9), and 57.6% linoleic acid (C18:2 n-6).
Skin Antioxidant Biomarker-Total Antioxidant Capacity (TAC)
42.99 nmol/mL
Standard Deviation 95.34
35.73 nmol/mL
Standard Deviation 17.55

SECONDARY outcome

Timeframe: Skin samplings are obtained at the end of each round of 4 follow-ups with an interval of 2 weeks in the last 2 months.

we measure another skin antioxidant biomarker-GSH, . The values in the following Outcome Measure Data Table refer to the means of measurements at 4 follow-ups.

Outcome measures

Outcome measures
Measure
Fish Oil Supplementation
n=34 Participants
This group receive 2.5 g/day (two 1.25-g capsules daily) of fish oil (marine-derived n-3 PUFA) for 4 consecutive months. Fish oil supplementation: Participants of this randomized double-blind placebo-controlled trial include 70 healthy Chinese adults. The investigators randomly assign participants to two parallel groups at baseline using a random-number table. Compliance is determined by directly observed supplement intake. Participants in fish oil group are assigned to receive 2.5 g/day in divided doses. Each capsule contains 60% n-3 PUFA \[24% docosahexanoic acid (C22:6 n-3 DHA) and 36% eicosapentaenoic acid (C20:5 n-3 EPA)\].
Sunflower Seed Oil Supplementation
n=31 Participants
This group receive 2.5 g/day (two 1.25-g capsules daily) of placebo (sunflower seed oil) for 4 consecutive months. Sunflower seed oil supplementation: Participants of this randomized double-blind placebo-controlled trial include 70 healthy Chinese adults. The investigators randomly assign participants to two parallel groups at baseline using a random-number table. Compliance is determined by directly observed supplement intake. Participants in sunflower seed oil group receive 2.5 g/day in divided doses, and the capsules are identical as the fish oil capsules. Each capsule containes 14.4% palmitic acid (C16:0), 16.0% oleic acid (C18:1 n-9), and 57.6% linoleic acid (C18:2 n-6).
Skin Antioxidant Biomarker-Glutataione (GSH)
2.21 ppb
Standard Deviation 1.70
0.42 ppb
Standard Deviation 1.07

POST_HOC outcome

Timeframe: Blood samples are obtained at the end of each round of 4 follow-ups with an interval of 2 weeks in the last 2 months of intervention.

Mass spectrometry-based serum metabolomics is non-targeted. The study is to find the differential metabolites in serum between fish oil and placebo groups.

Outcome measures

Outcome data not reported

Adverse Events

Fish Oil Supplementation

Serious events: 0 serious events
Other events: 0 other events
Deaths: 0 deaths

Sunflower Seed Oil Supplementation

Serious events: 0 serious events
Other events: 0 other events
Deaths: 0 deaths

Serious adverse events

Adverse event data not reported

Other adverse events

Adverse event data not reported

Additional Information

Dr. Haidong Kan

Department of Environmental Health, School of Public Health, Fudan University

Phone: 86-21-54237908

Results disclosure agreements

  • Principal investigator is a sponsor employee
  • Publication restrictions are in place