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Subchondral bone alterations in a novel model of intermediate post traumatic osteoarthritis in mice.

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Title: Subchondral bone alterations in a novel model of intermediate post traumatic osteoarthritis in mice.
Authors: Manitta, L.1 (AUTHOR), Labrune, M.1 (AUTHOR), Olive, L.1 (AUTHOR), Fayolle, C.1 (AUTHOR), Berteau, J.P.1,2,3 (AUTHOR) Jean.Berteau@csi.cuny.edu
Source: Journal of Biomechanics. Sep2022, Vol. 142, pN.PAG-N.PAG. 1p.
Subjects: Knee, Bone remodeling, Elastic modulus, Osteoarthritis, Mice, Raman spectroscopy
Abstract: In Post Traumatic Osteoarthritis (PTOA), hypomineralization and increased remodeling of the Subchondral bone (SB) are the first stages of tissue alterations. Although these alterations are well depicted and one of the main targets in OA intervention, the link between SB compositional and mechanical properties alterations during OA progression remains scarce in the literature. Here, we hypothesized that SB shows – right after the first sign of gait pattern changes – a decrease in SB tissue formation depicted by (i) a decrease in thickness, (ii) a lower nanoscopic stiffness, and (iii) a decrease in mineral and collagen maturity. To test our hypothesis, we investigated PTOA in female C57Bl6 mice's right knee (n = 13 control group [CL] and n = 27 PTOA group) by using Gait Analysis, Histomorphometry, Nanoindentation, and Raman Spectroscopy (RS). We showed (i) an increased OA histological grade, (ii) a decrease in Cartilage and SB thickness, and (ii) an increase of stance time and stride length on both limbs. The lateral condyle – where the main forces were applied - of mice with PTOA decreased in the degree of mineralization and crystal size and presented a lower Modulus of Elasticity (E). However, while no difference was observed regarding collagen or mineral-related compositional RS properties, we depicted higher crystallinity in the medial condyle than the lateral condyle in the PTOA group, which we did not observe in the control group. Our study depicts an early onset of intermediate PTOA where SB nanoscopic stiffness decreases while the degree of mineralization is not severely altered yet. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Biomechanics is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 158888721
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PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Subchondral bone alterations in a novel model of intermediate post traumatic osteoarthritis in mice.
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  Data: <searchLink fieldCode="AR" term="%22Manitta%2C+L%2E%22">Manitta, L.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Labrune%2C+M%2E%22">Labrune, M.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Olive%2C+L%2E%22">Olive, L.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Fayolle%2C+C%2E%22">Fayolle, C.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Berteau%2C+J%2EP%2E%22">Berteau, J.P.</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<i> Jean.Berteau@csi.cuny.edu</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Biomechanics%22">Journal of Biomechanics</searchLink>. Sep2022, Vol. 142, pN.PAG-N.PAG. 1p.
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  Data: <searchLink fieldCode="DE" term="%22Knee%22">Knee</searchLink><br /><searchLink fieldCode="DE" term="%22Bone+remodeling%22">Bone remodeling</searchLink><br /><searchLink fieldCode="DE" term="%22Elastic+modulus%22">Elastic modulus</searchLink><br /><searchLink fieldCode="DE" term="%22Osteoarthritis%22">Osteoarthritis</searchLink><br /><searchLink fieldCode="DE" term="%22Mice%22">Mice</searchLink><br /><searchLink fieldCode="DE" term="%22Raman+spectroscopy%22">Raman spectroscopy</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: In Post Traumatic Osteoarthritis (PTOA), hypomineralization and increased remodeling of the Subchondral bone (SB) are the first stages of tissue alterations. Although these alterations are well depicted and one of the main targets in OA intervention, the link between SB compositional and mechanical properties alterations during OA progression remains scarce in the literature. Here, we hypothesized that SB shows – right after the first sign of gait pattern changes – a decrease in SB tissue formation depicted by (i) a decrease in thickness, (ii) a lower nanoscopic stiffness, and (iii) a decrease in mineral and collagen maturity. To test our hypothesis, we investigated PTOA in female C57Bl6 mice's right knee (n = 13 control group [CL] and n = 27 PTOA group) by using Gait Analysis, Histomorphometry, Nanoindentation, and Raman Spectroscopy (RS). We showed (i) an increased OA histological grade, (ii) a decrease in Cartilage and SB thickness, and (ii) an increase of stance time and stride length on both limbs. The lateral condyle – where the main forces were applied - of mice with PTOA decreased in the degree of mineralization and crystal size and presented a lower Modulus of Elasticity (E). However, while no difference was observed regarding collagen or mineral-related compositional RS properties, we depicted higher crystallinity in the medial condyle than the lateral condyle in the PTOA group, which we did not observe in the control group. Our study depicts an early onset of intermediate PTOA where SB nanoscopic stiffness decreases while the degree of mineralization is not severely altered yet. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Biomechanics is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1016/j.jbiomech.2022.111233
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      – Code: eng
        Text: English
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      – SubjectFull: Bone remodeling
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      – SubjectFull: Elastic modulus
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      – SubjectFull: Osteoarthritis
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      – SubjectFull: Mice
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      – SubjectFull: Raman spectroscopy
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      – TitleFull: Subchondral bone alterations in a novel model of intermediate post traumatic osteoarthritis in mice.
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              M: 09
              Text: Sep2022
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