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Effect of oral lycopene intake on vascular endothelial function: a systematic review with a meta-analysis

Effect of oral lycopene intake on vascular endothelial function: a systematic review with a meta-analysis - Effect of oral lycopene intake on vascular endothelial function: a systematic review with a meta-analysis

Status
Active, not recruiting
Phases
Unknown
Study type
Unknown
Source
JPRN
Registry ID
JPRN-UMIN000058348
Enrollment
Unknown
Registered
2026-05-15
Start date
2025-07-04
Completion date
Unknown
Last updated
2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Healthy adults

Interventions

None listed

Sponsors

KAGOME CO., LTD.
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: (PI(E)COS) Participant: Healthy adults without illness (excluding minor under 18 years old, pregnant women, those planning to become pregnant, and lactating women) Intervention: Oral intake of test foods containing lycopene (regardless of form and amount) Exposure: Oral intake of test foods containing lycopene (regardless of form and amount) Comparison (for interventional studies): Oral intake of test foods that does not contain lycopene, or has an extremely low concentration of lycopene compared to the intervention, or no intervention at all Comparison (for observational studies): Oral intake of test foods that do not contain lycopene is the control. In the case of the stratified analysis by amount of the oral intake of foods containing lycopene, the group with the lowest lycopene intake is used as the control. Outcome measurement: The measurements by FMD, RH-PAT, and plethysmograph are the outcomes. Measurements by FMD is the primary outcome. The measurements by RH-PAT and plethysmograph are the secondary outcomes. The measurements at the endpoint will be used as outcomes. Study design: Randomized parallel group-controlled trial (RCT-P), randomized crossover-controlled trial (RCT-C), quasi-randomized parallel group-controlled trial (qRCT-P), quasi-randomized crossover-controlled trial (qRCT-C), non-randomized parallel group-controlled trial (nonRCT-P), non-randomized crossover-controlled trial (nonRCT-C), and non-randomized controlled trial are the study designs of clinical trials. Cohort study and case-control study are the study designs of observational studies. Cross-sectional study is excluded because it is difficult to explain causal relationships. (Language) Eligibility is not restricted by language.

Exclusion criteria

Exclusion criteria: Studies that do not aim at evaluating vascular endothelial function, studies assessing the safety of excessive intake by short-term intake of lycopene, conference proceedings (i.e. conference abstracts) and unpublished materials where detailed cross-checking is impossible are excluded. Other grey literature is excluded because it is difficult to confirm its appropriateness.

Design outcomes

Primary

MeasureTime frame
Measurements by flow mediated dilation (FMD) (%)

Secondary

MeasureTime frame
Measurements by reactive hyperemia peripheral arterial tonometry (RH-PAT) (ratio of amplitude), plethysmograph (mL/min/100 g)

Countries

Japan

Contacts

Public ContactKazutaka Yoshida

KAGOME CO., LTD. Diet and Well-being Research Institute

g167_0@kagome.co.jp0287-36-2935

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026