Trial reportMarine drugs2018
Effects of Composite Supplement Containing Collagen Peptide and Ornithine on Skin Conditions and Plasma IGF-1 Levels-A Randomized, Double-Blind, Placebo-Controlled Trial.
Trial report in Marine drugs, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05042024 (Supplementation With L-ornithine Increases Representation Density of CD68+ and CD163+ Macrophages in Human Periodontitis Gingiva and Can Modulate Macrophages Phenotypes. Randomized Controlled Pilot Trial), which is not on this map. Cited by 31 papers, 3 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Supplementation With L-ornithine Increases Representation Density of CD68+ and CD163+ Macrophages in Human Periodontitis Gingiva and Can Modulate Macrophages Phenotypes. Randomized Controlled Pilot Trial
Who cites it
31 citing papers in PubMed, 3 syntheses or guidelines pooled it, 65 citations in OpenAlex.
- Oral and topical peptides for skin aging: systematic review and meta-analysis of randomized controlled trials.Frontiers in medicine · 2026Pooled it
- Effects of Oral Collagen for Skin Anti-Aging: A Systematic Review and Meta-Analysis.Nutrients · 2023Pooled it
- Effectiveness of Dietary Supplement for Skin Moisturizing in Healthy Adults: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.Frontiers in nutrition · 2022Pooled it
- Oral supplementation with fish cartilage hydrolysate in an adult population suffering from knee pain and function discomfort: results from an innovative approach combining an exploratory clinical study and an ex vivo clinical investigation.BMC musculoskeletal disorders · 2023Trial
- Trial
- Effective topical delivery of minoxidil via chitosan coated nanocapsules to remodel microenvironment of dermal follicle for hair regeneration.Drug delivery and translational research · 2026Article
- Dietary Collagen Supplementation as a Strategy for Skin Health: A Narrative Review of Clinical Effects on Skin, Hair, Nails, and Wound Healing.Nutrients · 2026Review
- Oral Fish Collagen Peptide Complex Enhances Skin Rejuvenation and Systemic Health Biomarkers: A 90 Day Prospective Observational Study.Journal of cosmetic dermatology · 2026Observational
- Bioavailable human metabolites of a keratin-derived hydrolysate promote primary human dermal fibroblast activities and protect against oxidative stress-related damages.Frontiers in nutrition · 2026Article
- Influence of Oral Collagen Peptides on Skin Biophysical Properties in Humans: A Narrative Review.Clinical, cosmetic and investigational dermatology · 2026Review
- Valorisation of fish scales and bones: a sustainable source of bioactive proteins and collagen for nutraceuticals.Bioresources and bioprocessing · 2025Review
- Recent Advancements in Marine Collagen: Exploring New Sources, Processing Approaches, and Nutritional Applications.Marine drugs · 2025Review
- Hydrolyzed Marine Collagen: Emerging Evidence of Benefits via the Oral Route - Review and Insights for Medical Aesthetics Practitioners.Clinical, cosmetic and investigational dermatology · 2025Review
- The Efficacy and Safety of CollaSel ProJournal of clinical medicine · 2024Article
- Liquid collagen from freshwater fish skin ameliorates hydration, roughness and elasticity in photo-aged skin: a randomized, controlled, clinical study.Nutrition research and practice · 2024Article
- Review
- Low-Molecular Collagen Peptide Supplementation and Body Fat Mass in Adults Aged ≥ 50 Years: A Randomized, Double-Blind, Placebo-Controlled Trial.Clinical nutrition research · 2023Article
- Collagen Hydrolysate from the Scales of Mozambique Tilapia (Marine drugs · 2023Article
- Pharmacological Functions, Synthesis, and Delivery Progress for Collagen as Biodrug and Biomaterial.Pharmaceutics · 2023Review
- Challenges and strategies for collagen delivery for tissue regeneration.Journal of public health in Africa · 2023Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Aging-associated changes of skin conditions are a major concern for maintaining quality of life. Therefore, the improvement of skin conditions by dietary supplementation is a topic of public interest. In this study, we hypothesized that a composite supplement containing fish derived-collagen peptide and ornithine (CPO) could improve skin conditions by increasing plasma growth hormone and/or insulin-like growth factor-1 (IGF-1) levels. Twenty-two healthy Japanese participants were enrolled in an 8-week double-blind placebo-controlled pilot study. They were assigned to either a CPO group, who were supplemented with a drink containing CPO, or an identical placebo group. We examined skin conditions including elasticity and transepidermal water loss (TEWL), as well as plasma growth hormone and IGF-1 levels. Skin elasticity and TEWL were significantly improved in the CPO group compared with the placebo group. Furthermore, only the CPO group showed increased plasma IGF-1 levels after 8 weeks of supplementation compared with the baseline. Our results might suggest the novel possibility for the use of CPO to improve skin conditions by increasing plasma IGF-1 levels.
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What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.