Effects of age and platelet-rich plasma on ACL cell viability and collagen gene expression
Open accessAbstract
Platelet‐rich plasma (PRP) has shown in vivo potential to stimulate anterior cruciate ligament (ACL) healing at early time points in large animal models. However, in animal models, the healing potential of the ACL is dependent on animal age. In this study, we hypothesized that there are age‐dependent differences in ACL cell metabolism, collagen gene expression, and the ability of the cells to respond to growth factors in PRP. To test this hypothesis, ACL cells were obtained from skeletally immature, adolescent and adult pigs, and cultured in a collagen type I hydrogel with or without PRP for 14 days. When cultured in collagen‐only hydrogel, ACL cells from adult pigs had a 19% lower apoptotic rate as compared to immature pigs (p = 0.001) and a 25% higher cellular metabolic activity as compared to adolescent pigs (p = 0.006). The addition of PRP to the collagen hydrogel resulted in a significantly increased cellular metabolic activity, reduced apoptotic rate, and stimulation of collagen production in the cells from the immature and adolescent animals (p < 0.05 for all comparisons) but had less effect on adult cells. These findings suggest that skeletal maturity may influence ACL cells' metabolic activity, apoptosis, collagen production, and response to PRP. © 2011 Orthopaedic Research Society Published by Wiley Periodicals, Inc. J Orthop Res 30:79–85, 2012
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In ACL cells from immature and adolescent pigs, PRP produced higher cellular metabolic activity and reduced apoptotic rate.
“Higher cellular metabolic activity and reduced apoptotic rate were found in immature and adolescent animals after the administration of PRP.”
From Molecular and Biologic Effects of Platelet-Rich Plasma (PRP) in Ligament and Tendon Healing and Regeneration: A Systematic Review (2023) · cites this paper as [33]
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- Authors
- Cheng, M., Johnson, V. M., & Murray, M. M.
- Affiliations
- Boston Children's Hospital (US)
- Corresponding author
- Murray, Martha M.
- Venue
- Journal of Orthopaedic Research
- Publisher
- Wiley
- Published
- 2011-07-11
- Volume
- 30
- Issue
- 1
- Pages
- 79-85
- ISSN
- 0736-0266 (ISSN-L)
- 1554-527X
- PMC
- PMC3202019
- OpenAlex
- W2010895172
- Cited by
- 40
- References
- 38
- Citations by year
- 2025: 1 · 2024: 3 · 2023: 2 · 2022: 7 · 2021: 3 · 2020: 6 · 2019: 4 · 2018: 3 · 2017: 3 · 2015: 1 · 2014: 3 · 2013: 2 · 2012: 1
- FWCI
- 2.31
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Journal of Orthopaedic Research® (publishedVersion)
- PubMed (publishedVersion)
- Europe PMC (PubMed Central) (acceptedVersion)
- PubMed Central (acceptedVersion)
- Funders
- National Institutes of Health
- National Institute of Arthritis and Musculoskeletal and Skin Diseases (R01AR054099)
- Topics
- Health Sciences › Medicine › Urology › Periodontal Regeneration and Treatments
- Health Sciences › Medicine › Orthopedics and Sports Medicine › Tendon Structure and Treatment
- Health Sciences › Medicine › Surgery › Knee injuries and reconstruction techniques
- Keywords
- platelet-rich plasma, anterior cruciate ligament, age-dependent effects, type I collagen, collagen gene expression, cell viability, apoptosis, cellular metabolic activity, growth factor responsiveness, collagen gel, ligament healing, skeletal maturity, porcine model
- MeSH terms
- Age Factors, Aging, Animals, Cell Division, Cell Survival, Cells, Cultured, Energy Metabolism, Fibroblasts, Swine, Swine, Miniature, Gene Expression, Anterior Cruciate Ligament, Apoptosis, Collagen Type I, Collagen Type III, Platelet-Rich Plasma, Tissue Scaffolds
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