Skeletal Site-Specific Lipid Profile and Hematopoietic Progenitors of Bone Marrow Adipose Tissue in Patients Undergoing Primary Hip Arthroplasty

Background/Objectives: Bone marrow adipose tissue (BMAT) has been described as an important biomechanic and lipotoxic factor with negative impacts on skeletal and hematopoietic system regeneration. BMAT undergoes metabolic and cellular adaptations with age and disease, being a source of potential bi...

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Main Authors: Drenka Trivanović, Marko Vujačić, Aleksandra Arsić, Tamara Kukolj, Milica Rajković, Nikola Bogosavljević, Zoran Baščarević, Mirjana Maljković Ružičić, Jovana Kovačević, Aleksandra Jauković
Format: Article
Language:English
Published: MDPI AG 2025-01-01
Series:Metabolites
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Online Access:https://www.mdpi.com/2218-1989/15/1/16
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author Drenka Trivanović
Marko Vujačić
Aleksandra Arsić
Tamara Kukolj
Milica Rajković
Nikola Bogosavljević
Zoran Baščarević
Mirjana Maljković Ružičić
Jovana Kovačević
Aleksandra Jauković
author_facet Drenka Trivanović
Marko Vujačić
Aleksandra Arsić
Tamara Kukolj
Milica Rajković
Nikola Bogosavljević
Zoran Baščarević
Mirjana Maljković Ružičić
Jovana Kovačević
Aleksandra Jauković
author_sort Drenka Trivanović
collection DOAJ
description Background/Objectives: Bone marrow adipose tissue (BMAT) has been described as an important biomechanic and lipotoxic factor with negative impacts on skeletal and hematopoietic system regeneration. BMAT undergoes metabolic and cellular adaptations with age and disease, being a source of potential biomarkers. However, there is no evidence on the lipid profile and cellularity at different skeletal locations in osteoarthritis patients undergoing primary hip arthroplasty. Methods: Acetabular and femoral bone marrow (BM) and gluteofemoral subcutaneous adipose tissue (gfSAT) were obtained from matched patients undergoing hip replacement surgery. BM, BMAT, and gfSAT were explored at the levels of total lipids, fatty acids, and cells by using thin-layerand gas chromatography, ex vivo cellular assays, and flow cytometry. Results: BMAT content was significantly higher in femoral than in acetabular BM. Total lipid analyses revealed significantly lower triglyceride content in femoral than in acetabular BMAT and gfSAT. Frequencies of saturated palmitic, myristic, and stearic acids were higher in femoral than in acetabular BMAT and gfSAT. The content of CD45<sup>+</sup>CD34<sup>+</sup> cells within femoral BMAT was higher than in acetabular BMAT or gfSAT. This was associated with a higher incidence of total clonogenic hematopoietic progenitors and late erythroid colonies CFU-E in femoral BMAT when compared to acetabular BMAT, similar to their BM counterparts. Conclusions: Collectively, our results indicate that the lipid profiles of hip bone and femoral BMAT impose significantly different microenvironments and distributions of cells with hematopoietic potential. These findings might bring forth new inputs for defining BMAT biology and setting novel directions in OA disease investigations.
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spelling doaj-art-9b4bc7ad23a742ada5000cd3b2207a7d2025-01-24T13:41:10ZengMDPI AGMetabolites2218-19892025-01-011511610.3390/metabo15010016Skeletal Site-Specific Lipid Profile and Hematopoietic Progenitors of Bone Marrow Adipose Tissue in Patients Undergoing Primary Hip ArthroplastyDrenka Trivanović0Marko Vujačić1Aleksandra Arsić2Tamara Kukolj3Milica Rajković4Nikola Bogosavljević5Zoran Baščarević6Mirjana Maljković Ružičić7Jovana Kovačević8Aleksandra Jauković9Group for Hematology and Stem Cells, Institute for Medical Research, National Institute of Republic of Serbia, University of Belgrade, 11000 Belgrade, SerbiaInstitute for Orthopedy Banjica, 11000 Belgrade, SerbiaCentre of Research Excellence in Nutrition and Metabolism, Institute for Medical Research, National Institute of Republic of Serbia, University of Belgrade, 11000 Belgrade, SerbiaGroup for Hematology and Stem Cells, Institute for Medical Research, National Institute of Republic of Serbia, University of Belgrade, 11000 Belgrade, SerbiaGroup for Hematology and Stem Cells, Institute for Medical Research, National Institute of Republic of Serbia, University of Belgrade, 11000 Belgrade, SerbiaInstitute for Orthopedy Banjica, 11000 Belgrade, SerbiaInstitute for Orthopedy Banjica, 11000 Belgrade, SerbiaFaculty of Mathematics, University of Belgrade, 11000 Belgrade, SerbiaFaculty of Mathematics, University of Belgrade, 11000 Belgrade, SerbiaGroup for Hematology and Stem Cells, Institute for Medical Research, National Institute of Republic of Serbia, University of Belgrade, 11000 Belgrade, SerbiaBackground/Objectives: Bone marrow adipose tissue (BMAT) has been described as an important biomechanic and lipotoxic factor with negative impacts on skeletal and hematopoietic system regeneration. BMAT undergoes metabolic and cellular adaptations with age and disease, being a source of potential biomarkers. However, there is no evidence on the lipid profile and cellularity at different skeletal locations in osteoarthritis patients undergoing primary hip arthroplasty. Methods: Acetabular and femoral bone marrow (BM) and gluteofemoral subcutaneous adipose tissue (gfSAT) were obtained from matched patients undergoing hip replacement surgery. BM, BMAT, and gfSAT were explored at the levels of total lipids, fatty acids, and cells by using thin-layerand gas chromatography, ex vivo cellular assays, and flow cytometry. Results: BMAT content was significantly higher in femoral than in acetabular BM. Total lipid analyses revealed significantly lower triglyceride content in femoral than in acetabular BMAT and gfSAT. Frequencies of saturated palmitic, myristic, and stearic acids were higher in femoral than in acetabular BMAT and gfSAT. The content of CD45<sup>+</sup>CD34<sup>+</sup> cells within femoral BMAT was higher than in acetabular BMAT or gfSAT. This was associated with a higher incidence of total clonogenic hematopoietic progenitors and late erythroid colonies CFU-E in femoral BMAT when compared to acetabular BMAT, similar to their BM counterparts. Conclusions: Collectively, our results indicate that the lipid profiles of hip bone and femoral BMAT impose significantly different microenvironments and distributions of cells with hematopoietic potential. These findings might bring forth new inputs for defining BMAT biology and setting novel directions in OA disease investigations.https://www.mdpi.com/2218-1989/15/1/16bone marrow adipose tissueosteoarthritisfatty acidstem cellshematopoietic progenitors
spellingShingle Drenka Trivanović
Marko Vujačić
Aleksandra Arsić
Tamara Kukolj
Milica Rajković
Nikola Bogosavljević
Zoran Baščarević
Mirjana Maljković Ružičić
Jovana Kovačević
Aleksandra Jauković
Skeletal Site-Specific Lipid Profile and Hematopoietic Progenitors of Bone Marrow Adipose Tissue in Patients Undergoing Primary Hip Arthroplasty
Metabolites
bone marrow adipose tissue
osteoarthritis
fatty acid
stem cells
hematopoietic progenitors
title Skeletal Site-Specific Lipid Profile and Hematopoietic Progenitors of Bone Marrow Adipose Tissue in Patients Undergoing Primary Hip Arthroplasty
title_full Skeletal Site-Specific Lipid Profile and Hematopoietic Progenitors of Bone Marrow Adipose Tissue in Patients Undergoing Primary Hip Arthroplasty
title_fullStr Skeletal Site-Specific Lipid Profile and Hematopoietic Progenitors of Bone Marrow Adipose Tissue in Patients Undergoing Primary Hip Arthroplasty
title_full_unstemmed Skeletal Site-Specific Lipid Profile and Hematopoietic Progenitors of Bone Marrow Adipose Tissue in Patients Undergoing Primary Hip Arthroplasty
title_short Skeletal Site-Specific Lipid Profile and Hematopoietic Progenitors of Bone Marrow Adipose Tissue in Patients Undergoing Primary Hip Arthroplasty
title_sort skeletal site specific lipid profile and hematopoietic progenitors of bone marrow adipose tissue in patients undergoing primary hip arthroplasty
topic bone marrow adipose tissue
osteoarthritis
fatty acid
stem cells
hematopoietic progenitors
url https://www.mdpi.com/2218-1989/15/1/16
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