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Delayed cartilage oligomeric matrix protein response to loading is associated with femoral cartilage composition post-ACLR

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European Journal of Applied Physiology Aims and scope Submit manuscript

Abstract

Purpose

To determine associations between immediate and delayed response of serum cartilage oligomeric matrix protein (sCOMP) to loading (i.e., 3000 walking steps) and femoral cartilage interlimb T1ρ relaxation times in individual’s post-anterior cruciate ligament reconstruction (ACLR).

Methods

This cross-sectional study included 20 individuals 6–12 months following primary ACLR (65% female, 20.5 ± 4.0 years old, 24.9 ± 3.0 kg/m2, 7.3 ± 1.5 months post-ACLR). Serum samples were collected prior to, immediately following, and 3.5 h following walking 3000 steps on a treadmill at habitual walking speed. sCOMP concentrations were processed using enzyme-linked immunosorbent assays. Immediate and delayed absolute sCOMP responses to loading were evaluated immediately and 3.5 h post-walking, respectively. Participants underwent bilateral magnetic resonance imaging with T1ρ sequences to calculate resting femoral cartilage interlimb T1ρ relaxation time ratios between limbs (i.e., ACLR/Uninjured limb). Linear regression models were fitted to determine associations between sCOMP response to loading and femoral cartilage T1ρ outcomes controlling for pre-loading sCOMP concentrations.

Results

Greater increases in delayed sCOMP response to loading were associated with greater lateral (∆R2 = 0.29, p = 0.02) but not medial (∆R2 < 0.01, p = 0.99) femoral cartilage interlimb T1ρ ratios. Associations between immediate sCOMP response to loading with femoral cartilage interlimb T1ρ ratios were weak and non-significant (∆R2 range = 0.02–0.09, p range = 0.21–0.58).

Conclusion

Greater delayed sCOMP response to loading, a biomarker of cartilage breakdown, is associated with worse lateral femoral cartilage composition in the ACLR limb compared to the uninjured limb. Delayed sCOMP response to loading may be a more indicative metabolic indicator linked to deleterious changes in composition than immediate sCOMP response.

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Data availability

The datasets generated during and/or analysed during the current study are available from the corresponding author on reasonable request.

Abbreviations

ACL:

Anterior cruciate ligament

ACLR:

Anterior cruciate ligament reconstruction

BMI:

Body mass index

COMP:

Cartilage oligomeric matrix protein

ELISA:

Enzyme-linked immunosorbent assay

KOOS:

Knee Injury Osteoarthritis Outcomes

LFC:

Lateral femoral articular cartilage

MRI:

Magnetic resonance imaging

MFC:

Medial femoral articular cartilage

PTOA:

Posttraumatic osteoarthritis

sCOMP:

Serum cartilage oligomeric matrix protein

References

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Acknowledgements

We recognized the American College of Sports Medicine Doctoral Student Research Grant and the National Institute of Arthritis and Musculoskeletal and Skin Diseases of the National Institutes of Health for funding this study.

Funding

This study was funded by the American College of Sports Medicine Doctoral Student Research Grant and the National Institute of Arthritis and Musculoskeletal and Skin Diseases of the National Institutes of Health (1R21AR074094-01 and F31AR078013).

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Authors and Affiliations

Authors

Contributions

CL and BP made substantial contributions to the concept and design of the manuscript as well as drafting of the work. CL, AEP, HDW, AEM, LL, DL, JRF, TAS and BP contributed to data analysis and interpretation. AEP, HDW, AEM, LL, DL, TAS, and JRF served as manuscript reviewer/revisers. AEP, HDW, AEM , LL, and DL aided in data acquisition.

Corresponding author

Correspondence to Caroline Lisee.

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Conflicts of interest

The authors have no conflicts of interest to disclose.

Additional information

Communicated by Olivier Seynnes.

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Supplementary file1 (DOCX 801 KB)

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Lisee, C., Evans-Pickett, A., Davis-Wilson, H. et al. Delayed cartilage oligomeric matrix protein response to loading is associated with femoral cartilage composition post-ACLR. Eur J Appl Physiol 123, 2525–2535 (2023). https://doi.org/10.1007/s00421-023-05253-w

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  • DOI: https://doi.org/10.1007/s00421-023-05253-w

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