Cited by 40Periodontal Regeneration and TreatmentsTendon Structure and TreatmentKnee injuries and reconstruction techniques

Effects of age and platelet-rich plasma on ACL cell viability and collagen gene expression

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Cheng, Mingyu, Johnson, Victor M., Murray, Martha M.·2012·Journal of Orthopaedic Research

Abstract

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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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
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
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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