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Du D, Wang X, Zuo H, Li L, Hao H, Hou G, Gu P, Shao J, Tong Z. Differences in glucose homeostasis and islet injury among diverse mice strains post acute pancreatitis. Biochem Biophys Res Commun 2024; 708:149780. [PMID: 38518725 DOI: 10.1016/j.bbrc.2024.149780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Revised: 02/28/2024] [Accepted: 03/11/2024] [Indexed: 03/24/2024]
Abstract
Diverse animal models have been used to study postpancreatitis diabetes mellitus (PPDM) development; however, no study has yet conducted a comparative analysis of the specific differences in glucose homeostasis and islet injury between these models. Therefore, we investigated the differences in pancreatic islet injury and glucose homeostasis among diverse strains in a cerulein-induced acute pancreatitis (AP) model to determine the appropriate animal model for PPDM. BALB/cJ, C57BL/6J, C57BL/6 N, and FVB/NJ mice were administered cerulein to induce AP. Serum amylase levels, pancreatic acinar injury, blood glucose homeostasis, islet function, and islet injury were measured and analyzed. All strains exhibited elevated amylase secretion post pancreatitis, and BALB/cJ, C57BL/6J, and C57BL/6 N mice exhibited sex-related differences. All strains exhibited pancreatic acinar injury post pancreatitis but mostly recovered within 15 days. Overall, glucose homeostasis remained balanced post pancreatitis in all strains compared to that in the control groups, except in FVB/NJ male and female mice, which exhibited an imbalance in glucose homeostasis on day 7 post pancreatitis. All the strains, except BALB/cJ mice, exhibited a decline in Homeostasis model assessment-β(HOMA-β) values post pancreatitis, with significant decrease in C57BL/6J females and FVB/NJ males. Islet size decreased post pancreatitis in all strains, except BALB/cJ mice. Pancreatic islet insulin secretion levels significantly decreased in male FVB/NJ mice post pancreatitis onset and did not recover within 15 days. Therefore, FVB/NJ male mice are a useful model for studying PPDM.
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Affiliation(s)
- Deren Du
- Department of Critical Care Medicine, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, China
| | - Xinwu Wang
- Department of Urology, Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, China
| | - Han Zuo
- Nanjing University of Chinese Medicine, Nanjing, China
| | - Lianglan Li
- Department of Critical Care Medicine, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, China
| | - Haibin Hao
- Department of Critical Care Medicine, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, China
| | - Gaohuan Hou
- Department of Critical Care Medicine, Jinling Hospital, Affiliated Hospital of Medical School, Southeast University, Nanjing, China
| | - Ping Gu
- Department of Endocrinology, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, China
| | - Jiaqing Shao
- Department of Endocrinology, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, China.
| | - Zhihui Tong
- Department of Critical Care Medicine, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, China.
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2
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Cartwright C, Ragni A, Hublin JJ, Chirchir H. Trabecular bone volume fraction in Holocene and Late Pleistocene humans. J Hum Evol 2024; 190:103499. [PMID: 38569444 DOI: 10.1016/j.jhevol.2024.103499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 01/25/2024] [Accepted: 01/25/2024] [Indexed: 04/05/2024]
Abstract
Research suggests that recent modern humans have gracile skeletons in having low trabecular bone volume fraction (BV/TV) and that gracilization of the skeleton occurred in the last 10,000 years. This has been attributed to a reduction in physical activity in the Holocene. However, there has been no thorough sampling of BV/TV in Pleistocene humans due to limited access to high resolution images of fossil specimens. Therefore, our study investigates the gracilization of BV/TV in Late Pleistocene humans and recent (Holocene) modern humans to improve our understanding of the emergence of gracility. We used microcomputed tomography to measure BV/TV in the femora, humeri and metacarpals of a sample of Late Pleistocene humans from Dolní Věstonice (Czech Republic, ∼26 ka, n = 6) and Ohalo II (Israel, ∼19 ka, n = 1), and a sample of recent humans including farming groups (n = 39) and hunter-gatherers (n = 6). We predicted that 1) Late Pleistocene humans would exhibit greater femoral and humeral head BV/TV compared with recent humans and 2) among recent humans, metacarpal head BV/TV would be greater in hunter-gatherers compared with farmers. Late Pleistocene humans had higher BV/TV compared with recent humans in both the femur and humerus, supporting our first prediction, and consistent with previous findings that Late Pleistocene humans are robust as compared to recent humans. However, among recent humans, there was no significant difference in BV/TV in the metacarpals between the two subsistence groups. The results highlight the similarity in BV/TV in the hand of two human groups from different geographic locales and subsistence patterns and raise questions about assumptions of activity levels in archaeological populations and their relationships to trabecular BV/TV.
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Affiliation(s)
- Caroline Cartwright
- Department of Biological Sciences, Marshall University, 1 John Marshall Drive, Huntington, WV, 25755, USA.
| | - Anna Ragni
- Department of Biology, University of Tampa, 401 W. Kennedy Boulevard, Tampa, FL 33606, USA
| | - Jean-Jacques Hublin
- Paléoanthropologie, CIRB (UMR 7241 - U1050), Collège de France, 11 Place Marcelin-Berthelot, 75231, Paris Cedex 05, France; Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, 04103, Leipzig, Germany
| | - Habiba Chirchir
- Department of Biological Sciences, Marshall University, 1 John Marshall Drive, Huntington, WV, 25755, USA; Human Origins Program, Department of Anthropology, National Museum of Natural History, Smithsonian Institution, P.O Box 37012, Room 153, MRC 010, Washington, DC 20013, USA.
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3
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Stevenson M, Srivastava A, Nacher M, Hall C, Palaia T, Lee J, Zhao CL, Lau R, Ali MAE, Park CY, Schlamp F, Heffron SP, Fisher EA, Brathwaite C, Ragolia L. The Effect of Diet Composition on the Post-operative Outcomes of Roux-en-Y Gastric Bypass in Mice. Obes Surg 2024; 34:911-927. [PMID: 38191966 DOI: 10.1007/s11695-023-07052-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 12/30/2023] [Accepted: 12/30/2023] [Indexed: 01/10/2024]
Abstract
PURPOSE Roux-en-Y gastric bypass (RYGB) leads to the improvement of many obesity-associated conditions. The degree to which post-operative macronutrient composition contributes to metabolic improvement after RYGB is understudied. METHODS A mouse model of RYGB was used to examine the effects of diet on the post-operative outcomes of RYGB. Obese mice underwent either Sham or RYGB surgery and were administered either chow or HFD and then monitored for an additional 8 weeks. RESULTS After RYGB, reductions to body weight, fat mass, and lean mass were similar regardless of diet. RYGB and HFD were independently detrimental to bone mineral density and plasma vitamin D levels. Independent of surgery, HFD accelerated hematopoietic stem and progenitor cell proliferation and differentiation and exhibited greater myeloid lineage commitment. Independent of diet, systemic iron deficiency was present after RYGB. In both Sham and RYGB groups, HFD increased energy expenditure. RYGB increased fecal energy loss, and HFD after RYGB increased fecal lipid content. RYGB lowered fasting glucose and liver glycogen levels but HFD had an opposing effect. Indices of insulin sensitivity improved independent of diet. HFD impaired improvements to dyslipidemia, NAFLD, and fibrosis. CONCLUSION Post-operative diet plays a significant role in determining the degree to which RYGB reverses obesity-induced metabolic abnormalities such as hyperglycemia, dyslipidemia, and NAFLD. Diet composition may be targeted in order to assist in the treatment of post-RYGB bone mineral density loss and vitamin D deficiency as well as to reverse myeloid lineage commitment. HFD after RYGB continues to pose a significant multidimensional health risk.
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Affiliation(s)
- Matthew Stevenson
- Department of Biomedical Research, NYU Grossman Long Island School of Medicine, NYU Langone Hospital-Long Island, Mineola, NY, USA
| | - Ankita Srivastava
- Department of Biomedical Research, NYU Grossman Long Island School of Medicine, NYU Langone Hospital-Long Island, Mineola, NY, USA
| | - Maria Nacher
- Department of Medicine, Division of Cardiology, NYU Langone Health Cardiovascular Research Center, New York University Grossman School of Medicine, New York, NY, USA
- The Leon H. Charney Division of Cardiology, Department of Medicine, The Marc and Ruti Bell Program in Vascular Biology and the Cardiovascular Research Center, NYU Grossman School of Medicine, New York, NY, USA
| | - Christopher Hall
- Department of Biomedical Research, NYU Grossman Long Island School of Medicine, NYU Langone Hospital-Long Island, Mineola, NY, USA
| | - Thomas Palaia
- Department of Biomedical Research, NYU Grossman Long Island School of Medicine, NYU Langone Hospital-Long Island, Mineola, NY, USA
| | - Jenny Lee
- Department of Biomedical Research, NYU Grossman Long Island School of Medicine, NYU Langone Hospital-Long Island, Mineola, NY, USA
| | - Chaohui Lisa Zhao
- Department of Pathology, NYU Langone Hospital-Long Island, Mineola, NY, USA
| | - Raymond Lau
- Department of Biomedical Research, NYU Grossman Long Island School of Medicine, NYU Langone Hospital-Long Island, Mineola, NY, USA
- Department of Endocrinology, NYU Langone Hospital-Long Island, Mineola, NY, USA
| | - Mohamed A E Ali
- Department of Pathology, New York University Grossman School of Medicine, New York, NY, USA
| | - Christopher Y Park
- Department of Pathology, New York University Grossman School of Medicine, New York, NY, USA
| | - Florencia Schlamp
- Department of Medicine, Division of Cardiology, NYU Langone Health Cardiovascular Research Center, New York University Grossman School of Medicine, New York, NY, USA
| | - Sean P Heffron
- Department of Medicine, Division of Cardiology, NYU Langone Health Cardiovascular Research Center, New York University Grossman School of Medicine, New York, NY, USA
- The Leon H. Charney Division of Cardiology, Department of Medicine, The Marc and Ruti Bell Program in Vascular Biology and the Cardiovascular Research Center, NYU Grossman School of Medicine, New York, NY, USA
| | - Edward A Fisher
- Department of Medicine, Division of Cardiology, NYU Langone Health Cardiovascular Research Center, New York University Grossman School of Medicine, New York, NY, USA
- The Leon H. Charney Division of Cardiology, Department of Medicine, The Marc and Ruti Bell Program in Vascular Biology and the Cardiovascular Research Center, NYU Grossman School of Medicine, New York, NY, USA
| | - Collin Brathwaite
- Department of Biomedical Research, NYU Grossman Long Island School of Medicine, NYU Langone Hospital-Long Island, Mineola, NY, USA
- Department of Surgery, NYU Langone Hospital-Long Island, Mineola, NY, USA
| | - Louis Ragolia
- Department of Biomedical Research, NYU Grossman Long Island School of Medicine, NYU Langone Hospital-Long Island, Mineola, NY, USA.
- Department of Foundations of Medicine, NYU Grossman Long Island School of Medicine, Mineola, NY, USA.
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Moscatelli F, Monda A, Messina G, Picciocchi E, Monda M, Di Padova M, Monda V, Mezzogiorno A, Dipace A, Limone P, Messina A, Polito R. Exploring the Interplay between Bone Marrow Stem Cells and Obesity. Int J Mol Sci 2024; 25:2715. [PMID: 38473961 DOI: 10.3390/ijms25052715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2024] [Revised: 02/13/2024] [Accepted: 02/19/2024] [Indexed: 03/14/2024] Open
Abstract
Obesity, a complex disorder with rising global prevalence, is a chronic, inflammatory, and multifactorial disease and it is characterized by excessive adipose tissue accumulation and associated comorbidities. Adipose tissue (AT) is an extremely diverse organ. The composition, structure, and functionality of AT are significantly influenced by characteristics specific to everyone, in addition to the variability connected to various tissue types and its location-related heterogeneity. Recent investigation has shed light on the intricate relationship between bone marrow stem cells and obesity, revealing potential mechanisms that contribute to the development and consequences of this condition. Mesenchymal stem cells within the bone marrow, known for their multipotent differentiation capabilities, play a pivotal role in adipogenesis, the process of fat cell formation. In the context of obesity, alterations in the bone marrow microenvironment may influence the differentiation of mesenchymal stem cells towards adipocytes, impacting overall fat storage and metabolic balance. Moreover, bone marrow's role as a crucial component of the immune system adds another layer of complexity to the obesity-bone marrow interplay. This narrative review summarizes the current research findings on the connection between bone marrow stem cells and obesity, highlighting the multifaceted roles of bone marrow in adipogenesis and inflammation.
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Affiliation(s)
- Fiorenzo Moscatelli
- Department of Wellbeing, Nutrition and Sport, Pegaso Telematic University, 80143 Naples, Italy
| | - Antonietta Monda
- Department of Experimental Medicine, Section of Human Physiology and Unit of Dietetics and Sports Medicine, University of Campania "Luigi Vanvitelli", 80138 Naples, Italy
| | - Giovanni Messina
- Department of Experimental Medicine, Section of Human Physiology and Unit of Dietetics and Sports Medicine, University of Campania "Luigi Vanvitelli", 80138 Naples, Italy
| | - Elisabetta Picciocchi
- Department of Experimental Medicine, Section of Human Physiology and Unit of Dietetics and Sports Medicine, University of Campania "Luigi Vanvitelli", 80138 Naples, Italy
| | - Marcellino Monda
- Department of Experimental Medicine, Section of Human Physiology and Unit of Dietetics and Sports Medicine, University of Campania "Luigi Vanvitelli", 80138 Naples, Italy
| | - Marilena Di Padova
- Department of Humanistic Studies, University of Foggia, 71100 Foggia, Italy
| | - Vincenzo Monda
- Department of Exercise Sciences and Well-Being, University of Naples "Parthenope", 80138 Naples, Italy
| | - Antonio Mezzogiorno
- Department of Mental Health, Fisics and Preventive Medicine, University of Campania "Luigi Vanvitelli", 80138 Naples, Italy
| | - Anna Dipace
- Department of Wellbeing, Nutrition and Sport, Pegaso Telematic University, 80143 Naples, Italy
| | - Pierpaolo Limone
- Department of Wellbeing, Nutrition and Sport, Pegaso Telematic University, 80143 Naples, Italy
| | - Antonietta Messina
- Department of Experimental Medicine, Section of Human Physiology and Unit of Dietetics and Sports Medicine, University of Campania "Luigi Vanvitelli", 80138 Naples, Italy
| | - Rita Polito
- Department of Clinical and Experimental Medicine, University of Foggia, 71122 Foggia, Italy
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Meda Venkata SP, Li H, Xu L, Wang JM. The Impact of Obesity on Diabetes Onset and Neovascularization in Mouse Models of Metabolic Stress. Int J Mol Sci 2024; 25:1214. [PMID: 38279212 PMCID: PMC10816627 DOI: 10.3390/ijms25021214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 01/14/2024] [Accepted: 01/16/2024] [Indexed: 01/28/2024] Open
Abstract
Animal models of metabolic disorders are essential to studying pathogenic mechanisms and developing therapies for diabetes, but the induction protocols vary, and sexual dimorphism often exists. In a chronic diabetic model of diet-induced obesity (DIO) and low-dose streptozotocin (STZ)-induced hyperglycemia, blood glucose and lipid profiles were measured. The high-fat (HF) diet damaged insulin sensitivity and increased triglycerides, total cholesterol, LDL-cholesterol, HDL-cholesterol, and liver lipid deposition. STZ increased blood glucose and liver fibrosis with less effects on blood lipids or liver lipid deposition. The combination of DIO and STZ treatments led to significant liver lipid deposition and fibrosis. Female mice showed delayed body weight gain on HF diet and resisted STZ-induced hyperglycemia. However, once they developed DIO, which occurs around 26 weeks of HF diet, the female mice were prone to STZ-induced hyperglycemia. In hindlimb ischemia, male mice in the DIO-STZ group showed significantly worse neovascularization compared with DIO or STZ groups. The DIO-STZ females showed significantly worse recovery than the DIO-STZ males. Our observations suggest that DIO-STZ is a plausible model for studying metabolic and cardiovascular disorders in obesity and diabetes. Moreover, the findings in female animals stress the need to assess sexual dimorphism and investigate the underlying mechanisms that contribute to the worse vasculopathy manifestations in females in metabolic models.
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Affiliation(s)
- Sai Pranathi Meda Venkata
- Department of Pharmaceutical Sciences, Eugene Applebaum College of Pharmacy and Health Sciences, 259 Mack Ave, 3122 Applebaum Building, Detroit, MI 48201, USA; (S.P.M.V.); (L.X.)
| | - Hainan Li
- Department of Pharmaceutical Sciences, Eugene Applebaum College of Pharmacy and Health Sciences, 259 Mack Ave, 3122 Applebaum Building, Detroit, MI 48201, USA; (S.P.M.V.); (L.X.)
| | - Liping Xu
- Department of Pharmaceutical Sciences, Eugene Applebaum College of Pharmacy and Health Sciences, 259 Mack Ave, 3122 Applebaum Building, Detroit, MI 48201, USA; (S.P.M.V.); (L.X.)
| | - Jie-Mei Wang
- Department of Pharmaceutical Sciences, Eugene Applebaum College of Pharmacy and Health Sciences, 259 Mack Ave, 3122 Applebaum Building, Detroit, MI 48201, USA; (S.P.M.V.); (L.X.)
- Centers for Molecular Medicine and Genetics, Wayne State University, Detroit, MI 48201, USA
- Karmanos Cancer Institute, Detroit, MI 48201, USA
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Emini L, Salbach‐Hirsch J, Krug J, Jähn‐Rickert K, Busse B, Rauner M, Hofbauer LC. Utility and Limitations of TALLYHO/JngJ as a Model for Type 2 Diabetes-Induced Bone Disease. JBMR Plus 2023; 7:e10843. [PMID: 38130754 PMCID: PMC10731141 DOI: 10.1002/jbm4.10843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 10/06/2023] [Accepted: 10/25/2023] [Indexed: 12/23/2023] Open
Abstract
Type 2 diabetes mellitus (T2DM) increases risk of fractures due to bone microstructural and material deficits, though the mechanisms remain unclear. Preclinical models mimicking diabetic bone disease are required to further understand its pathogenesis. The TALLYHO/JngJ (TH) mouse is a polygenic model recapitulating adolescent-onset T2DM in humans. Due to incomplete penetrance of the phenotype ~25% of male TH mice never develop hyperglycemia, providing a strain-matched nondiabetic control. We performed a comprehensive characterization of the metabolic and skeletal phenotype of diabetic TH mice and compared them to either their nondiabetic TH controls or the recommended SWR/J controls to evaluate their suitability to study diabetic bone disease in humans. Compared to both controls, male TH mice with T2DM exhibited higher blood glucose levels, weight along with impaired glucose tolerance and insulin sensitivity. TH mice with/without T2DM displayed higher cortical bone parameters and lower trabecular bone parameters in the femurs and vertebrae compared to SWR/J. The mechanical properties remained unchanged for all three groups except for a low-energy failure in TH mice with T2DM only compared to SWR/J. Histomorphometry analyses only revealed higher number of osteoclasts and osteocytes for SWR/J compared to both groups of TH. Bone turnover markers procollagen type 1 N-terminal propeptide (P1NP) and tartrate-resistant acid phosphatase (TRAP) were low for both groups of TH mice compared to SWR/J. Silver nitrate staining of the femurs revealed low number of osteocyte lacunar and dendrites in TH mice with T2DM. Three-dimensional assessment showed reduced lacunar parameters in trabecular and cortical bone. Notably, osteocyte morphology changed in TH mice with T2DM compared to SWR/J. In summary, our study highlights the utility of the TH mouse to study T2DM, but not necessarily T2DM-induced bone disease, as there were no differences in bone strength and bone cell parameters between diabetic and non-diabetic TH mice. © 2023 The Authors. JBMR Plus published by Wiley Periodicals LLC on behalf of American Society for Bone and Mineral Research.
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Affiliation(s)
- Lejla Emini
- Department of Medicine III and Center for Healthy AgingTechnische Universität Dresden Medical CenterDresdenGermany
| | - Juliane Salbach‐Hirsch
- Department of Medicine III and Center for Healthy AgingTechnische Universität Dresden Medical CenterDresdenGermany
| | - Johannes Krug
- Department of Osteology and BiomechanicsUniversity Medical Center Hamburg‐EppendorfHamburgGermany
| | - Katharina Jähn‐Rickert
- Department of Osteology and BiomechanicsUniversity Medical Center Hamburg‐EppendorfHamburgGermany
- Mildred Scheel Cancer Career Center HamburgUniversity Cancer Center Hamburg, University Medical Center Hamburg‐EppendorfHamburgGermany
| | - Björn Busse
- Department of Osteology and BiomechanicsUniversity Medical Center Hamburg‐EppendorfHamburgGermany
- Mildred Scheel Cancer Career Center HamburgUniversity Cancer Center Hamburg, University Medical Center Hamburg‐EppendorfHamburgGermany
- Interdisciplinary Competence Center for Interface Research (ICCIR)University Medical Center Hamburg‐Eppendorf (UKE)HamburgGermany
| | - Martina Rauner
- Department of Medicine III and Center for Healthy AgingTechnische Universität Dresden Medical CenterDresdenGermany
| | - Lorenz C. Hofbauer
- Department of Medicine III and Center for Healthy AgingTechnische Universität Dresden Medical CenterDresdenGermany
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Tencerova M, Duque G, Beekman KM, Corsi A, Geurts J, Bisschop PH, Paccou J. The Impact of Interventional Weight Loss on Bone Marrow Adipose Tissue in People Living with Obesity and Its Connection to Bone Metabolism. Nutrients 2023; 15:4601. [PMID: 37960254 PMCID: PMC10650495 DOI: 10.3390/nu15214601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 10/25/2023] [Accepted: 10/26/2023] [Indexed: 11/15/2023] Open
Abstract
This review focuses on providing physicians with insights into the complex relationship between bone marrow adipose tissue (BMAT) and bone health, in the context of weight loss through caloric restriction or metabolic and bariatric surgery (MBS), in people living with obesity (PwO). We summarize the complex relationship between BMAT and bone health, provide an overview of noninvasive imaging techniques to quantify human BMAT, and discuss clinical studies measuring BMAT in PwO before and after weight loss. The relationship between BMAT and bone is subject to variations based on factors such as age, sex, menopausal status, skeletal sites, nutritional status, and metabolic conditions. The Bone Marrow Adiposity Society (BMAS) recommends standardizing imaging protocols to increase comparability across studies and sites, they have identified both water-fat imaging (WFI) and spectroscopy (1H-MRS) as accepted standards for in vivo quantification of BMAT. Clinical studies measuring BMAT in PwO are limited and have shown contradictory results. However, BMAT tends to be higher in patients with the highest visceral adiposity, and inverse associations between BMAT and bone mineral density (BMD) have been consistently found in PwO. Furthermore, BMAT levels tend to decrease after caloric restriction-induced weight loss. Although weight loss was associated with overall fat loss, a reduction in BMAT did not always follow the changes in fat volume in other tissues. The effects of MBS on BMAT are not consistent among the studies, which is at least partly related to the differences in the study population, skeletal site, and duration of the follow-up. Overall, gastric bypass appears to decrease BMAT, particularly in patients with diabetes and postmenopausal women, whereas sleeve gastrectomy appears to increase BMAT. More research is necessary to evaluate changes in BMAT and its connection to bone metabolism, either in PwO or in cases of weight loss through caloric restriction or MBS, to better understand the role of BMAT in this context and determine the local or systemic factors involved.
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Affiliation(s)
- Michaela Tencerova
- Molecular Physiology of Bone, Institute of Physiology of the Czech Academy of Sciences, 14220 Prague, Czech Republic;
| | - Gustavo Duque
- Department of Medicine, Research Institute of the McGill University Health Centre, Montreal, QC H4A 3J1, Canada;
| | - Kerensa M. Beekman
- Department of Radiology and Nuclear Medicine, Amsterdam UMC, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands;
| | - Alessandro Corsi
- Department of Molecular Medicine, Sapienza University of Rome, 00161 Rome, Italy;
| | - Jeroen Geurts
- Rheumatology, Department of Musculoskeletal Medicine, Lausanne University Hospital, 1011 Lausanne, Switzerland;
| | - Peter H. Bisschop
- Department of Endocrinology, Amsterdam UMC, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands;
| | - Julien Paccou
- Department of Rheumatology, MABLab ULR 4490, CHU Lille, University Lille, 59000 Lille, France
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8
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Wallace IJ, Toya C, Peña Muñoz MA, Meyer JV, Busby T, Reynolds AZ, Martinez J, Thompson TT, Miller-Moore M, Harris AR, Rios R, Martinez A, Jashashvili T, Ruff CB. Effects of the energy balance transition on bone mass and strength. Sci Rep 2023; 13:15204. [PMID: 37709850 PMCID: PMC10502131 DOI: 10.1038/s41598-023-42467-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 09/11/2023] [Indexed: 09/16/2023] Open
Abstract
Chronic positive energy balance has surged among societies worldwide due to increasing dietary energy intake and decreasing physical activity, a phenomenon called the energy balance transition. Here, we investigate the effects of this transition on bone mass and strength. We focus on the Indigenous peoples of New Mexico in the United States, a rare case of a group for which data can be compared between individuals living before and after the start of the transition. We show that since the transition began, bone strength in the leg has markedly decreased, even though bone mass has apparently increased. Decreased bone strength, coupled with a high prevalence of obesity, has resulted in many people today having weaker bones that must sustain excessively heavy loads, potentially heightening their risk of a bone fracture. These findings may provide insight into more widespread upward trends in bone fragility and fracture risk among societies undergoing the energy balance transition.
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Affiliation(s)
- Ian J Wallace
- Department of Anthropology, University of New Mexico, Albuquerque, NM, 87131, USA.
| | | | | | - Jana Valesca Meyer
- Department of Anthropology, University of New Mexico, Albuquerque, NM, 87131, USA
| | - Taylor Busby
- Department of Anthropology, University of New Mexico, Albuquerque, NM, 87131, USA
| | - Adam Z Reynolds
- Department of Anthropology, University of New Mexico, Albuquerque, NM, 87131, USA
| | - Jordan Martinez
- Department of Anthropology, University of New Mexico, Albuquerque, NM, 87131, USA
| | | | - Marcus Miller-Moore
- Department of Anthropology, University of New Mexico, Albuquerque, NM, 87131, USA
| | - Alexandra R Harris
- Department of Anthropology, University of New Mexico, Albuquerque, NM, 87131, USA
| | - Roberto Rios
- Department of Anthropology, University of New Mexico, Albuquerque, NM, 87131, USA
| | - Alexis Martinez
- Department of Anthropology, University of New Mexico, Albuquerque, NM, 87131, USA
| | - Tea Jashashvili
- Department of Integrative Anatomical Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA, 90033, USA
| | - Christopher B Ruff
- Center for Functional Anatomy and Evolution, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
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9
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Buckels EJ, Tan J, Hsu H, Zhu Y, Buchanan CM, Matthews BG, Lee KL. Preptin Deficiency Does Not Protect against High-Fat Diet-Induced Metabolic Dysfunction or Bone Loss in Mice. JBMR Plus 2023; 7:e10777. [PMID: 37614298 PMCID: PMC10443080 DOI: 10.1002/jbm4.10777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 04/27/2023] [Accepted: 05/18/2023] [Indexed: 08/25/2023] Open
Abstract
Preptin is derived from the cleavage of the E-peptide of pro-insulin-like growth factor (IGF)-II and is an insulin secretagogue. Observational studies have linked elevated circulating preptin to metabolic dysfunction in humans; however, a causal role for preptin in metabolic dysfunction has not been established. Additionally, preptin can promote osteoblast proliferation and differentiation, suggesting a link with skeletal health. We previously described a global preptin knockout (KO) model. In this study, we sought to uncover the impact of preptin KO in mice on the response to a moderately high-fat diet (HFD) and low-fat diet (LFD). HFD groups had higher weight and fat mass gain, lower trabecular and cortical bone volume and fracture load, and higher liver triglycerides. In males, preptin deficiency led to lower blood glucose than wild-type (WT) mice under LFD conditions. This was accompanied by differences in bone microarchitecture, including lower trabecular bone volume fraction, trabecular number, and lower cortical thickness. These differences were absent in female mice, although KO females had a HFD-driven increase in fat mass and liver triglycerides that was absent in WT mice. Female WT mice had increased glucose-stimulated insulin secretion under HFD conditions that was absent in female KO mice. Overall, preptin may have a detrimental impact on metabolism and a positive impact on bone health in male mice and may protect against liver fat storage in females while enabling islet compensation under HFD conditions. When we consider that serum preptin levels are elevated in humans of both sexes in pathological states in which insulin levels are elevated, the impact of preptin on comorbidity risk needs to be better understood. © 2023 The Authors. JBMR Plus published by Wiley Periodicals LLC on behalf of American Society for Bone and Mineral Research.
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Affiliation(s)
- Emma J. Buckels
- Department of Molecular Medicine and PathologyUniversity of AucklandAucklandNew Zealand
- Maurice Wilkins Centre for Molecular BiodiscoveryUniversity of AucklandAucklandNew Zealand
| | - Joey Tan
- Department of Molecular Medicine and PathologyUniversity of AucklandAucklandNew Zealand
| | - Huai‐Ling Hsu
- Department of Molecular Medicine and PathologyUniversity of AucklandAucklandNew Zealand
| | - Yuting Zhu
- Department of Engineering ScienceUniversity of AucklandAucklandNew Zealand
| | - Christina M. Buchanan
- Department of Molecular Medicine and PathologyUniversity of AucklandAucklandNew Zealand
| | - Brya G. Matthews
- Department of Molecular Medicine and PathologyUniversity of AucklandAucklandNew Zealand
- Maurice Wilkins Centre for Molecular BiodiscoveryUniversity of AucklandAucklandNew Zealand
| | - Kate L. Lee
- Department of Molecular Medicine and PathologyUniversity of AucklandAucklandNew Zealand
- Maurice Wilkins Centre for Molecular BiodiscoveryUniversity of AucklandAucklandNew Zealand
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10
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Dravid AA, Dhanabalan KM, Naskar S, Vashistha A, Agarwal S, Padhan B, Dewani M, Agarwal R. Sustained release resolvin D1 liposomes are effective in the treatment of osteoarthritis in obese mice. J Biomed Mater Res A 2023; 111:765-777. [PMID: 36773024 DOI: 10.1002/jbm.a.37512] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 01/24/2023] [Accepted: 01/31/2023] [Indexed: 02/12/2023]
Abstract
Osteoarthritis (OA) is the most common joint disorder and currently affects >500 million patients worldwide, with ~60% of them also suffering from obesity. There is no drug approved for human use that changes the course of OA progression. OA is one of the most common comorbidities of obesity, and obesity-related OA (ObOA) is a serious health concern because it shows heightened severity of tissue damage and also predominantly affects the working population. Unresolved inflammation is a major driver of ObOA, thus, resolving disease-associated inflammation is a viable strategy to treat ObOA. Resolvins are highly potent molecules that play a role in the resolution of inflammation and promote tissue healing. However, small molecules (like Resolvin D1; RvD1) have to be administered frequently or prior to injury because they lose their in vivo activity rapidly either by lymphatic clearance, or oxidation-mediated deactivation. In this study, we have encapsulated RvD1 in liposomes and established its efficacy in the mouse model of ObOA at much lower dosages than freely administered RvD1. Liposomal RvD1 (lipo-RvD1) acted as a source of the RvD1 molecules for ~11 days in vitro in synovial fluid derived from patients. When administered prophylactically or therapeutically, lipo-RvD1 suppressed cartilage damage in male C57BL/6 mice compared to untreated and free RvD1 treatments. This efficacy was achieved by increasing the proportion of the proresolution M2 macrophages over proinflammatory M1 macrophages in the synovial membrane. These results show the potential of lipo-RvD1 as an anti-OA agent.
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11
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Ben Tahar S, Garnier J, Eller K, DiMauro N, Piet J, Mehta S, Bajpayee AG, Shefelbine SJ. Adolescent obesity incurs adult skeletal deficits in murine induced obesity model. J Orthop Res 2023; 41:386-395. [PMID: 35578981 DOI: 10.1002/jor.25378] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 03/06/2022] [Accepted: 05/14/2022] [Indexed: 02/04/2023]
Abstract
Adolescent obesity has risen dramatically in the last few decades. While adult obesity may be osteoprotective, the effects of obesity during adolescence, which is a period of massive bone accrual, are not clear. We used a murine model of induced adolescent obesity to examine the structural, mechanical, and compositional differences between obese and healthy weight bone in 16-week-old female C57Bl6 mice. We also examined the effects of a return to normal weight after skeletal maturity (24 weeks old). We found obese adolescent bone exhibited decreased trabecular bone volume, increased cortical diameter, increased ultimate stress, and increased brittleness (decreased plastic energy to fracture), similar to an aging phenotype. The trabecular bone deficits remained after return to normal weight after skeletal maturity. However, after returning to normal diet, there was no difference in ultimate stress nor plastic energy to fracture between groups as the normal diet group increased ultimate stress and brittleness. Interestingly, compositional changes appeared in the former high-fat diet mice after skeletal maturity with a lower mineral to matrix ratio compared to normal diet mice. In addition there was a trend toward increased fluorescent advanced glycation endproducts in the former high-fat diet mice compared to normal diet mice but this did not reach significance (p < 0.05) due to the large variability. The skeletal consequences of adolescent obesity may have lasting implications for the adult skeleton even after return to normal weight. Given the rates of adolescent obesity, skeletal health should be a concern.
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Affiliation(s)
- Soha Ben Tahar
- Department of Bioengineering, Northeastern University, Boston, Massachusetts, USA
| | - Julien Garnier
- Department of Bioengineering, Northeastern University, Boston, Massachusetts, USA
| | - Kerry Eller
- Department of Bioengineering, Northeastern University, Boston, Massachusetts, USA
| | - Nicole DiMauro
- Department of Bioengineering, Northeastern University, Boston, Massachusetts, USA
| | - Judith Piet
- Department of Bioengineering, Northeastern University, Boston, Massachusetts, USA
| | - Shihkar Mehta
- Department of Bioengineering, Northeastern University, Boston, Massachusetts, USA
| | - Ambika G Bajpayee
- Department of Bioengineering, Northeastern University, Boston, Massachusetts, USA
| | - Sandra J Shefelbine
- Department of Bioengineering, Northeastern University, Boston, Massachusetts, USA.,Department of Mechanical and Industrial Engineering, Northeastern University, Boston, Massachusetts, USA
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12
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Ali D, Figeac F, Caci A, Ditzel N, Schmal C, Kerckhofs G, Havelund J, Færgeman N, Rauch A, Tencerova M, Kassem M. High-fat diet-induced obesity augments the deleterious effects of estrogen deficiency on bone: Evidence from ovariectomized mice. Aging Cell 2022; 21:e13726. [PMID: 36217558 PMCID: PMC9741509 DOI: 10.1111/acel.13726] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 09/12/2022] [Accepted: 09/18/2022] [Indexed: 12/14/2022] Open
Abstract
Several epidemiological studies have suggested that obesity complicated with insulin resistance and type 2 diabetes exerts deleterious effects on the skeleton. While obesity coexists with estrogen deficiency in postmenopausal women, their combined effects on the skeleton are poorly studied. Thus, we investigated the impact of high-fat diet (HFD) on bone and metabolism of ovariectomized (OVX) female mice (C57BL/6J). OVX or sham operated mice were fed either HFD (60%fat) or normal diet (10%fat) for 12 weeks. HFD-OVX group exhibited pronounced increase in body weight (~86% in HFD and ~122% in HFD-OVX, p < 0.0005) and impaired glucose tolerance. Bone microCT-scanning revealed a pronounced decrease in trabecular bone volume/total volume (BV/TV) (-15.6 ± 0.48% in HFD and -37.5 ± 0.235% in HFD-OVX, p < 0.005) and expansion of bone marrow adipose tissue (BMAT; +60.7 ± 9.9% in HFD vs. +79.5 ± 5.86% in HFD-OVX, p < 0.005). Mechanistically, HFD-OVX treatment led to upregulation of genes markers of senescence, bone resorption, adipogenesis, inflammation, downregulation of gene markers of bone formation and bone development. Similarly, HFD-OVX treatment resulted in significant changes in bone tissue levels of purine/pyrimidine and Glutamate metabolisms, known to play a regulatory role in bone metabolism. Obesity and estrogen deficiency exert combined deleterious effects on bone resulting in accelerated cellular senescence, expansion of BMAT and impaired bone formation leading to decreased bone mass. Our results suggest that obesity may increase bone fragility in postmenopausal women.
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Affiliation(s)
- Dalia Ali
- Department of Endocrinology and Metabolism, Molecular Endocrinology & Stem Cell Research Unit (KMEB) Odense University HospitalUniversity of Southern DenmarkOdenseDenmark
| | - Florence Figeac
- Department of Endocrinology and Metabolism, Molecular Endocrinology & Stem Cell Research Unit (KMEB) Odense University HospitalUniversity of Southern DenmarkOdenseDenmark
| | - Atenisa Caci
- Department of Endocrinology and Metabolism, Molecular Endocrinology & Stem Cell Research Unit (KMEB) Odense University HospitalUniversity of Southern DenmarkOdenseDenmark
| | - Nicholas Ditzel
- Department of Endocrinology and Metabolism, Molecular Endocrinology & Stem Cell Research Unit (KMEB) Odense University HospitalUniversity of Southern DenmarkOdenseDenmark
| | - Clarissa Schmal
- Department of Endocrinology and Metabolism, Molecular Endocrinology & Stem Cell Research Unit (KMEB) Odense University HospitalUniversity of Southern DenmarkOdenseDenmark
| | - Greet Kerckhofs
- Biomechanics Section, Department of Mechanical EngineeringKU LeuvenHeverleeBelgium
| | - Jesper Havelund
- Department of Biochemistry and Molecular Biology, VILLUM Center for Bioanalytical SciencesUniversity of Southern DenmarkOdenseDenmark
| | - Nils Færgeman
- Department of Biochemistry and Molecular Biology, VILLUM Center for Bioanalytical SciencesUniversity of Southern DenmarkOdenseDenmark
| | - Alexander Rauch
- Department of Endocrinology and Metabolism, Molecular Endocrinology & Stem Cell Research Unit (KMEB) Odense University HospitalUniversity of Southern DenmarkOdenseDenmark,Steno Diabetes Center OdenseOdense University HospitalOdenseDenmark
| | - Michaela Tencerova
- Department of Endocrinology and Metabolism, Molecular Endocrinology & Stem Cell Research Unit (KMEB) Odense University HospitalUniversity of Southern DenmarkOdenseDenmark,Molecular Physiology of Bone, Institute of PhysiologyCzech Academy of SciencesPragueCzech Republic
| | - Moustapha Kassem
- Department of Endocrinology and Metabolism, Molecular Endocrinology & Stem Cell Research Unit (KMEB) Odense University HospitalUniversity of Southern DenmarkOdenseDenmark,Department of Cellular and Molecular Medicine, Danish Stem Cell Centre (DanStem)University of CopenhagenCopenhagenDenmark
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13
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Vauclard A, Bellio M, Valet C, Borret M, Payrastre B, Severin S. Obesity: Effects on bone marrow homeostasis and platelet activation. Thromb Res 2022. [DOI: 10.1016/j.thromres.2022.10.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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14
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Zhang Z, Zhang Z, Pei L, Zhang X, Li B, Meng Y, Zhou X. How high-fat diet affects bone in mice: A systematic review and meta-analysis. Obes Rev 2022; 23:e13493. [PMID: 35822276 DOI: 10.1111/obr.13493] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 06/18/2022] [Accepted: 06/19/2022] [Indexed: 11/29/2022]
Abstract
High-fat diet (HFD) feeding for mice is commonly used to model obesity. However, conflicting results have been reported on the relationship between HFD and bone mass. In this systematic review and meta-analysis, we synthesized data from 80 articles to determine the alterations in cortical and trabecular bone mass of femur, tibia, and vertebrae in C57BL/6 mice after HFD. Overall, we detected decreased trabecular bone mass as well as deteriorated architecture, in femur and tibia of HFD treated mice. The vertebral trabecula was also impaired, possibly due to its reshaping into a more fragmentized pattern. In addition, pooled cortical thickness declined in femur, tibia, and vertebrae. Combined with changes in other cortical parameters, HFD could lead to a larger femoral bone marrow cavity, and a thinner and more fragile cortex. Moreover, we conducted subgroup analyses to explore the influence of mice's sex and age as well as HFD's ingredients and intervention period. Based on our data, male mice or mice aged 6-12 weeks old are relatively susceptible to HFD. HFD with > 50% of energy from fats and intervention time of 10 weeks to 5 months are more likely to induce skeletal alterations. Altogether, these findings supported HFD as an appropriate model for obesity-associated bone loss and can guide future studies.
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Affiliation(s)
- Zheng Zhang
- Department of Orthopedics, Changzheng Hospital, Second Military Medical University (Naval Medical University), Shanghai, People's Republic of China
| | - Zhanrong Zhang
- Department of Orthopedics, Changzheng Hospital, Second Military Medical University (Naval Medical University), Shanghai, People's Republic of China
| | - Lei Pei
- Department of Emergency, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Xiaozhou Zhang
- College of Letters & Science, University of California Berkeley, Berkeley, California, USA
| | - Boyuan Li
- Fountain Valley School of Colorado, Colorado Springs, Colorado, USA
| | - Yichen Meng
- Department of Orthopedics, Changzheng Hospital, Second Military Medical University (Naval Medical University), Shanghai, People's Republic of China
| | - Xuhui Zhou
- Department of Orthopedics, Changzheng Hospital, Second Military Medical University (Naval Medical University), Shanghai, People's Republic of China
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15
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Chen X, Han D, Liu T, Huang C, Hu Z, Tan X, Wu S. Asiatic acid improves high-fat-diet-induced osteoporosis in mice via regulating SIRT1/FOXO1 signaling and inhibiting oxidative stress. Histol Histopathol 2022; 37:769-777. [PMID: 35229281 DOI: 10.14670/hh-18-446] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Asiatic acid can attenuate osteoporosis through suppressing adipogenic differentiation and osteoclastic differentiation. Oxidative stress enhances osteoclastic differentiation but represses osteogenic differentiation to promote osteoporosis. However, the role and mechanism of asiatic acid in osteoporosis have not been reported. Firstly, mice were fed with high-fat-diet (HFD) with or without asiatic acid for 16 weeks. Data from an automatic biochemical analyzer showed that HFD induced down-regulation of high-density lipoprotein (HDL) and an increase of serum levels of triglyceride (TG), total cholesterol (TC) and low-density lipoprotein (LDL). However, asiatic acid administration attenuated the decrease of HDL and increase of serum TG, TC and LDL in osteoporotic mice. Secondly, HFD induced high levels of malondialdehyde (MDA) and reactive oxygen species (ROS), low levels of superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) in osteoporotic mice. However, the levels of MDA, ROS, SOD and GSH-Px in osteoporotic mice were reversed by asiatic acid administration. (this section is unclear and requires revision) Asiatic acid administration reduced expression of c-telopeptide of type 1 collagen (CTX-1), enhanced alkaline phosphatase (ALP) and procollagen type 1 N-terminal propeptide (P1NP) in HFD-induced osteoporotic mice. (this section is unclear and requires revision) Thirdly, asiatic acid promoted calcium deposition in bone marrow cells and osteogenic differentiation in osteoporotic mice, but decreased ALP in bone marrow cells. Lastly, asiatic acid enhanced SIRT1 and nuclear FOXO1 (Nu-FOXO1) expression, while it reduced Acetyl FOXO1 (Ac-FOXO1) in osteoporotic mice. In conclusion, asiatic acid might inhibit oxidative stress and promote osteogenic differentiation through activating SIRT1/FOXO1 to attenuate HFD-induced osteoporosis in mice.
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Affiliation(s)
- Xiaosi Chen
- International and Special Medical Service ward, Affiliated Hospital of Guangdong Medical University, Zhanjiang City, Guangdong Province, China
| | - Dengpeng Han
- Department of Orthopedic Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang City, Guangdong Province, China
| | - Tianfeng Liu
- Department of Orthopedic Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang City, Guangdong Province, China
| | - Chengshuo Huang
- Department of Orthopedic Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang City, Guangdong Province, China
| | - Zibing Hu
- Department of Orthopedic Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang City, Guangdong Province, China
| | - Xiaoyan Tan
- Department of Orthopedic Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang City, Guangdong Province, China
| | - Shaoke Wu
- Department of Orthopedic Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang City, Guangdong Province, China.
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16
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Shalitin S, Gat-Yablonski G. Associations of Obesity with Linear Growth and Puberty. Horm Res Paediatr 2022; 95:120-136. [PMID: 34130293 DOI: 10.1159/000516171] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Accepted: 03/27/2021] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND The prevalence of obesity in childhood has increased dramatically in recent decades with increased risk of developing cardiometabolic and other comorbidities. Childhood adiposity may also influence processes of growth and puberty. SUMMARY Growth patterns of obesity during childhood have been shown to be associated with increased linear growth in early childhood, leading to accelerated epiphyseal growth plate (EGP) maturation. Several hormones secreted by the adipose tissue may affect linear growth in the context of obesity, both via the growth hormone IGF-1 axis and via a direct effect on the EGP. The observation that children with obesity tend to mature earlier than lean children has led to the assumption that the degree of body fatness may trigger the neuroendocrine events that lead to pubertal onset. The most probable link between obesity and puberty is leptin and its interaction with the kisspeptin system, which is an important regulator of puberty. However, peripheral action of adipose tissue could also be involved in changes in the onset of puberty. In addition, nutritional factors, epigenetics, and endocrine-disrupting chemicals are potential mediators linking pubertal onset to obesity. In this review, we focused on interactions of obesity with linear growth and pubertal processes, based on basic research and clinical data in humans. KEY MESSAGE Children with obesity are subject to accelerated linear growth with risk of impaired adult height and early puberty, with its psychological consequences. The data highlight another important objective in combatting childhood obesity, for the prevention of abnormal growth and pubertal patterns.
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Affiliation(s)
- Shlomit Shalitin
- National Center for Childhood Diabetes, Schneider Children's Medical Center of Israel, The Jesse Z and Sara Lea Shafer Institute for Endocrinology and Diabetes, Petach Tikva, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Galia Gat-Yablonski
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.,Felsenstein Medical Research Center, Petach Tikva, Israel
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17
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Differences in the Active Endometrial Microbiota across Body Weight and Cancer in Humans and Mice. Cancers (Basel) 2022; 14:cancers14092141. [PMID: 35565271 PMCID: PMC9100094 DOI: 10.3390/cancers14092141] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 04/21/2022] [Accepted: 04/23/2022] [Indexed: 12/24/2022] Open
Abstract
Simple Summary Of all cancers, endometrial cancer has the greatest association with obesity. Obesity causes dysbiosis of intestinal microbiota, but little is known about whether obesity is associated with dysbiosis of the female genital tract. Therefore, the aim of this study was to determine whether obesity and cancer were associated with altered microbiota profiles in the endometrium. 16S rRNA transcript amplicon sequencing (which captures actively replicating bacteria) of endometrial tissues showed that obesity and cancer were associated with the prevalence of microbial community types in the human endometrium. However, obesity was not associated with microbial community types in the mouse endometrium. The presence of endometrial cancer (but not obesity) was associated with decreased abundance of the Lactobacillus genus in the human endometrium. In mice, an enrichment of Lactobacillus was associated with lower prevalence of disease (normal uterine histology). These results suggest that obesity and cancer may influence microbiota community types in the endometrium (at least in humans) and Lactobacillus may be protective in the endometrium. This study therefore supports further research into the role of microbiota in endometrial cancer development. Abstract Obesity is a risk factor for endometrial cancer. The aim of this study was to determine whether actively replicating microbiota in the endometrium differ between obese vs. lean and cancer vs. benign states. We performed 16S rRNA amplicon sequencing on endometrial tissues from lean and obese women with and without endometrial cancer, and lean and obese mice. Results displayed human endometrial microbiota clustered into three community types (R = 0.363, p = 0.001). Lactobacillus was dominant in community type 1 (C1) while community type 2 (C2) had high levels of Proteobacteria and more cancer samples when compared to C1 (p = 0.007) and C3 (p = 0.0002). A significant increase in the prevalence of the C2 community type was observed across body mass index and cancer (χ2 = 14.24, p = 0.0002). The relative abundance of Lactobacillus was lower in cancer samples (p = 0.0043), and an OTU with 100% similarity to Lactobacillus iners was enriched in control samples (p = 0.0029). Mouse endometrial microbiota also clustered into three community types (R = 0.419, p = 0.001) which were not influenced by obesity. In conclusion, obesity and cancer are associated with community type prevalence in the human endometrium, and Lactobacillus abundance is associated with normal uterine histologies in humans and mice.
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18
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Bohm MS, Sipe LM, Pye ME, Davis MJ, Pierre JF, Makowski L. The role of obesity and bariatric surgery-induced weight loss in breast cancer. Cancer Metastasis Rev 2022; 41:673-695. [PMID: 35870055 PMCID: PMC9470652 DOI: 10.1007/s10555-022-10050-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 07/06/2022] [Indexed: 02/07/2023]
Abstract
Obesity is a complex metabolic condition considered a worldwide public health crisis, and a deeper mechanistic understanding of obesity-associated diseases is urgently needed. Obesity comorbidities include many associated cancers and are estimated to account for 20% of female cancer deaths in the USA. Breast cancer, in particular, is associated with obesity and is the focus of this review. The exact causal links between obesity and breast cancer remain unclear. Still, interactions have emerged between body mass index, tumor molecular subtype, genetic background, and environmental factors that strongly suggest obesity influences the risk and progression of certain breast cancers. Supportive preclinical research uses various diet-induced obesity models to demonstrate that weight loss, via dietary interventions or changes in energy expenditure, reduces the onset or progression of breast cancers. Ongoing and future studies are now aimed at elucidating the underpinning mechanisms behind weight-loss-driven observations to improve therapy and outcomes in patients with breast cancer and reduce risk. This review aims to summarize the rapidly emerging literature on obesity and weight loss strategies with a focused discussion of bariatric surgery in both clinical and preclinical studies detailing the complex interactions between metabolism, immune response, and immunotherapy in the setting of obesity and breast cancer.
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Affiliation(s)
- Margaret S. Bohm
- Department of Microbiology, Immunology, and Biochemistry, College of Medicine, The University of Tennessee Health Science Center, Memphis, TN 38163 USA
| | - Laura M. Sipe
- Division of Hematology and Oncology, Department of Medicine, College of Medicine, The University of Tennessee Health Science Center, Memphis, TN 38163 USA
| | - Madeline E. Pye
- Division of Hematology and Oncology, Department of Medicine, College of Medicine, The University of Tennessee Health Science Center, Memphis, TN 38163 USA
| | - Matthew J. Davis
- Division of Bariatric Surgery, Department of Surgery, College of Medicine, The University of Tennessee Health Science Center, Memphis, TN 38163 USA
| | - Joseph F. Pierre
- Department of Microbiology, Immunology, and Biochemistry, College of Medicine, The University of Tennessee Health Science Center, Memphis, TN 38163 USA ,Department of Nutritional Sciences, College of Agriculture and Life Science, The University of Wisconsin-Madison, Madison, WI 53706 USA
| | - Liza Makowski
- Department of Microbiology, Immunology, and Biochemistry, College of Medicine, The University of Tennessee Health Science Center, Memphis, TN 38163 USA ,Division of Hematology and Oncology, Department of Medicine, College of Medicine, The University of Tennessee Health Science Center, Memphis, TN 38163 USA ,Department of Pharmaceutical Sciences, College of Pharmacy, The University of Tennessee Health Science Center, Memphis, TN 38163 USA ,College of Medicine, UTHSC Center for Cancer Research, The University of Tennessee Health Science Center, Cancer Research Building Room 322, 19 S Manassas Street, Memphis, TN 38163 USA
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19
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Marin C, Tuts J, Luyten FP, Vandamme K, Kerckhofs G. Impaired soft and hard callus formation during fracture healing in diet-induced obese mice as revealed by 3D contrast-enhanced computed tomography imaging. Bone 2021; 150:116008. [PMID: 33992820 DOI: 10.1016/j.bone.2021.116008] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 05/07/2021] [Accepted: 05/10/2021] [Indexed: 11/21/2022]
Abstract
The impact of diabetes mellitus on bone fracture healing is clinically relevant as the patients experience delayed fracture healing. Even though efforts have been made to understand the detrimental effects of type 2 diabetes mellitus (T2DM) on the fracture healing process, the exact mechanisms causing the pathophysiological outcomes remain unclear. The aim of this study was to assess alterations in bone fracture healing (tibial fracture surgery, intramedullary pinning) of diet-induced obese (DIO) mice, and to investigate the in vitro properties of osteochondroprogenitors derived from the diabetic micro-environment. High-resolution contrast-enhanced microfocus X-ray computed tomography (CE-CT) enabled a simultaneous 3D assessment of the amount and spatial distribution of the regenerated soft and hard tissues during fracture healing and revealed that osteogenesis as well as chondrogenesis are altered in DIO mice. Compared to age-matched lean controls, DIO mice presented a decreased bone volume fraction and increased callus volume and adiposity at day 14 post-fracture. Of note, bone turnover was found altered in DIO mice relative to controls, evidenced by decreased blood serum osteocalcin and increased serum CTX levels. The in vitro data revealed that not only the osteogenic and adipogenic differentiation of periosteum-derived cells (PDCs) were altered by hyperglycemic (HG) conditions, but also the chondrogenic differentiation. Elevated PPARγ expression in HG conditions confirmed the observed increase in differentiated adipocytes in vitro. Finally, chondrogenesis-related genes COL2 and COL10 were downregulated for PDCs treated with HG medium, confirming that chondrogenic differentiation is compromised in vitro and suggesting that this may affect callus formation and maturation during the fracture healing process in vivo. Altogether, these results provide novel insights into the alterations of long bone fracture repair and suggest a link between HG-induced dysfunctionality of osteochondroprogenitor differentiation and fracture healing impairment under T2DM conditions.
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Affiliation(s)
- Carlos Marin
- Skeletal Biology and Engineering Research Center, Department of Development and Regeneration, KU Leuven, Leuven, Belgium; Prometheus - Division of Skeletal Tissue Engineering Leuven, KU Leuven, Leuven, Belgium; Biomaterials - BIOMAT, Department of Oral Health Sciences, KU Leuven, Leuven, Belgium
| | - Jolien Tuts
- Biomaterials - BIOMAT, Department of Oral Health Sciences, KU Leuven, Leuven, Belgium
| | - Frank P Luyten
- Skeletal Biology and Engineering Research Center, Department of Development and Regeneration, KU Leuven, Leuven, Belgium; Prometheus - Division of Skeletal Tissue Engineering Leuven, KU Leuven, Leuven, Belgium
| | - Katleen Vandamme
- Prometheus - Division of Skeletal Tissue Engineering Leuven, KU Leuven, Leuven, Belgium; Biomaterials - BIOMAT, Department of Oral Health Sciences, KU Leuven, Leuven, Belgium
| | - Greet Kerckhofs
- Prometheus - Division of Skeletal Tissue Engineering Leuven, KU Leuven, Leuven, Belgium; Department of Material Science and Engineering, KU Leuven, Leuven, Belgium; Biomechanics lab, Institute of Mechanics, Materials, and Civil Engineering, UCLouvain, Louvain-la-Neuve, Belgium; Institute for Experimental and Clinical Research, UCLouvain, Woluwe, Belgium.
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20
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Velazquez FN, Viscardi V, Montemage J, Zhang L, Trocchia C, Delamont MM, Ahmad R, Hannun YA, Obeid LM, Snider AJ. A Milk-Fat Based Diet Increases Metastasis in the MMTV-PyMT Mouse Model of Breast Cancer. Nutrients 2021; 13:nu13072431. [PMID: 34371939 PMCID: PMC8308868 DOI: 10.3390/nu13072431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 07/01/2021] [Accepted: 07/12/2021] [Indexed: 11/30/2022] Open
Abstract
A high-fat diet (HFD) and obesity are risk factors for many diseases including breast cancer. This is particularly important with close to 40% of the current adult population being overweight or obese. Previous studies have implicated that Mediterranean diets (MDs) partially protect against breast cancer. However, to date, the links between diet and breast cancer progression are not well defined. Therefore, to begin to define and assess this, we used an isocaloric control diet (CD) and two HFDs enriched with either olive oil (OOBD, high in oleate, and unsaturated fatty acid in MDs) or a milk fat-based diet (MFBD, high in palmitate and myristate, saturated fatty acids in Western diets) in a mammary polyomavirus middle T antigen mouse model (MMTV-PyMT) of breast cancer. Our data demonstrate that neither MFBD or OOBD altered the growth of primary tumors in the MMTV-PyMT mice. The examination of lung metastases revealed that OOBD mice exhibited fewer surface nodules and smaller metastases when compared to MFBD and CD mice. These data suggest that different fatty acids found in different sources of HFDs may alter breast cancer metastasis.
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Affiliation(s)
- Fabiola N. Velazquez
- Department of Medicine, Stony Brook University, Stony Brook, NY 11794, USA; (F.N.V.); (V.V.); (J.M.); (L.Z.); (C.T.); (Y.A.H.); (L.M.O.)
- Cancer Center, Stony Brook University, Stony Brook, NY 11794, USA
| | - Valentina Viscardi
- Department of Medicine, Stony Brook University, Stony Brook, NY 11794, USA; (F.N.V.); (V.V.); (J.M.); (L.Z.); (C.T.); (Y.A.H.); (L.M.O.)
- Cancer Center, Stony Brook University, Stony Brook, NY 11794, USA
| | - Julia Montemage
- Department of Medicine, Stony Brook University, Stony Brook, NY 11794, USA; (F.N.V.); (V.V.); (J.M.); (L.Z.); (C.T.); (Y.A.H.); (L.M.O.)
- Cancer Center, Stony Brook University, Stony Brook, NY 11794, USA
| | - Leiqing Zhang
- Department of Medicine, Stony Brook University, Stony Brook, NY 11794, USA; (F.N.V.); (V.V.); (J.M.); (L.Z.); (C.T.); (Y.A.H.); (L.M.O.)
- Cancer Center, Stony Brook University, Stony Brook, NY 11794, USA
| | - Carolena Trocchia
- Department of Medicine, Stony Brook University, Stony Brook, NY 11794, USA; (F.N.V.); (V.V.); (J.M.); (L.Z.); (C.T.); (Y.A.H.); (L.M.O.)
- Cancer Center, Stony Brook University, Stony Brook, NY 11794, USA
| | - Megan M. Delamont
- Department of Nutritional Sciences, College of Agriculture and Life Sciences, University of Arizona, Tucson, AZ 85721, USA;
| | - Rasheed Ahmad
- Immunology & Microbiology Department, Dasman Diabetes Institute, Kuwait City 15462, Kuwait;
| | - Yusuf A. Hannun
- Department of Medicine, Stony Brook University, Stony Brook, NY 11794, USA; (F.N.V.); (V.V.); (J.M.); (L.Z.); (C.T.); (Y.A.H.); (L.M.O.)
- Cancer Center, Stony Brook University, Stony Brook, NY 11794, USA
| | - Lina M. Obeid
- Department of Medicine, Stony Brook University, Stony Brook, NY 11794, USA; (F.N.V.); (V.V.); (J.M.); (L.Z.); (C.T.); (Y.A.H.); (L.M.O.)
- Cancer Center, Stony Brook University, Stony Brook, NY 11794, USA
| | - Ashley J. Snider
- Department of Medicine, Stony Brook University, Stony Brook, NY 11794, USA; (F.N.V.); (V.V.); (J.M.); (L.Z.); (C.T.); (Y.A.H.); (L.M.O.)
- Cancer Center, Stony Brook University, Stony Brook, NY 11794, USA
- Immunology & Microbiology Department, Dasman Diabetes Institute, Kuwait City 15462, Kuwait;
- Correspondence: ; Tel.: +1-520-621-8093
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21
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Li Z, MacDougald OA. Preclinical models for investigating how bone marrow adipocytes influence bone and hematopoietic cellularity. Best Pract Res Clin Endocrinol Metab 2021; 35:101547. [PMID: 34016532 PMCID: PMC8458229 DOI: 10.1016/j.beem.2021.101547] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Laboratory mice are a crucial preclinical model system for investigating bone marrow adipocyte (BMAd)-bone and BMAd-hematopoiesis interactions. In this review, we evaluate the suitability of mice to model common human diseases related to osteopenia or hematopoietic disorders, point out consistencies and discrepancies among different studies, and provide insights into model selection. Species, age, sex, skeletal site, and treatment protocol should all be considered when designing future studies.
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Affiliation(s)
- Ziru Li
- Department of Molecular & Integrative Physiology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Ormond A MacDougald
- Department of Molecular & Integrative Physiology, University of Michigan Medical School, Ann Arbor, MI, USA; Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA.
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22
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Mechanoadaptation of the bones of mice with high fat diet induced obesity in response to cyclical loading. J Biomech 2021; 124:110569. [PMID: 34171678 DOI: 10.1016/j.jbiomech.2021.110569] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 05/31/2021] [Accepted: 06/07/2021] [Indexed: 11/20/2022]
Abstract
An upward trend in childhood obesity implies a great need to determine its effects, both immediate and long-term. Obesity is osteoprotective in adults, but we know very little about the effects of obesity on the growing skeleton, particularly its ability to adapt to load. The objective of this research is to assess bone mechanoadaptation in adolescent obese mice. Ten mice were fed a high-fat diet (HFD) from 4 to 16 weeks of age, while a control group of the same size received a normal diet (ND). At 14 weeks of age, right tibiae were cyclically loaded with a 12 N peak load for HFD mice and a 9 N peak load for ND mice three times a week for two weeks, resulting in equal peak strains of about 2500 microstrain. At 16 weeks of age, mice were sacrificed, and tibiae and gonadal fat pads were dissected. Fat pads were weighed as an obesity indicator, and tibiae were imaged with microCT to measure bone structure. The left tibiae (nonloaded) were subsequently decalcified, stained with osmium, and scanned to quantify marrow fat. Results showed that HFD mice had larger tibial cross-sectional areas compared to ND mice, as well as greater marrow adiposity. However, there was no significant difference in the amount of bone adaptation in the cortical or trabecular bone between the two groups. This indicates that the bones of HFD and ND mice adapt equally well to loading.
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23
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Tauer JT, Boraschi-Diaz I, Al Rifai O, Rauch F, Ferron M, Komarova SV. Male but not female mice with severe osteogenesis imperfecta are partially protected from high-fat diet-induced obesity. Mol Genet Metab 2021; 133:211-221. [PMID: 33814269 DOI: 10.1016/j.ymgme.2021.03.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 02/16/2021] [Accepted: 03/24/2021] [Indexed: 01/07/2023]
Abstract
Previously we have shown that young mice with a dominant severe form of osteogenesis imperfecta (OI), caused by mutated collagen type I, exhibit an altered glucose/insulin metabolism and energy expenditure along with elevated levels of osteocalcin, a bone-derived hormone involved in the regulation of whole-body metabolism. This study aimed to examine the long-term effects of a western diet in these OI mice. Male and female OI mice and wild type littermates (WT) were fed a high-fat diet (HFD) or a matched low-fat diet (LFD) for 26 weeks. HFD-induced obesity was observed in male and female WT and female OI mice, but not in male OI mice. HFD-fed WT and OI mice of both sexes developed hyperglycemia and glucose intolerance, but the degree of glucose intolerance was significantly lower in male and female OI mice compared to sex- and diet-matched WT mice. Indirect calorimetry revealed increased movement of male OI mice on HFD compared to LFD and, while HFD lowered energy expenditure in WT mice, energy expenditure was not changed in OI mice. Further, HFD-fed male OI mice demonstrated a diet-induced increased expression of the thermogenesis genes, Ucp1 and Pgc1α, in brown adipose tissue. On LFD, total and Gla-13 osteocalcin levels were similar in 30-week-old WT and OI mice, but on HFD, both were significantly higher in OI mice than WT. Thus, male OI mice respond to HFD with increased movement, energy expenditure, brown adipose tissue thermogenesis, and higher levels of osteocalcin, resulting in partial protection against HFD-induced obesity.
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Affiliation(s)
- Josephine T Tauer
- Faculty of Dentistry, McGill University, Montreal, Quebec, Canada; Shriners Hospital for Children-Canada, Montreal, Quebec, Canada.
| | - Iris Boraschi-Diaz
- Shriners Hospital for Children-Canada, Montreal, Quebec, Canada; Department of Pediatrics, McGill University, Montreal, Quebec, Canada
| | - Omar Al Rifai
- Unité de Recherche en Physiologie Moléculaire, Institut de Recherches Cliniques de Montréal, Montreal, Quebec, Canada
| | - Frank Rauch
- Shriners Hospital for Children-Canada, Montreal, Quebec, Canada; Department of Pediatrics, McGill University, Montreal, Quebec, Canada
| | - Mathieu Ferron
- Unité de Recherche en Physiologie Moléculaire, Institut de Recherches Cliniques de Montréal, Montreal, Quebec, Canada; Départements de Médecine et de Biochimie et Médecine Moléculaire, Université de Montréal, Montreal, Quebec, Canada
| | - Svetlana V Komarova
- Faculty of Dentistry, McGill University, Montreal, Quebec, Canada; Shriners Hospital for Children-Canada, Montreal, Quebec, Canada
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24
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Piotrowska K, Tarnowski M. Bone Marrow Adipocytes-Role in Physiology and Various Nutritional Conditions in Human and Animal Models. Nutrients 2021; 13:nu13051412. [PMID: 33922353 PMCID: PMC8146898 DOI: 10.3390/nu13051412] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 04/19/2021] [Accepted: 04/20/2021] [Indexed: 02/06/2023] Open
Abstract
In recent years, adipose tissue has attracted a lot of attention. It is not only an energy reservoir but also plays important immune, paracrine and endocrine roles. BMAT (bone marrow adipose tissue) is a heterogeneous tissue, found mostly in the medullary canal of the long bones (tibia, femur and humerus), in the vertebrae and iliac crest. Adipogenesis in bone marrow cavities is a consequence of ageing or may accompany pathologies like diabetes mellitus type 1 (T1DM), T2DM, anorexia nervosa, oestrogen and growth hormone deficiencies or impaired haematopoiesis and osteoporosis. This paper focuses on studies concerning BMAT and its physiology in dietary interventions, like obesity in humans and high fat diet in rodent studies; and opposite: anorexia nervosa and calorie restriction in animal models.
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25
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Tangseefa P, Martin SK, Arthur A, Panagopoulos V, Page AJ, Wittert GA, Proud CG, Fitter S, Zannettino ACW. Deletion of Rptor in Preosteoblasts Reveals a Role for the Mammalian Target of Rapamycin Complex 1 (mTORC1) Complex in Dietary-Induced Changes to Bone Mass and Glucose Homeostasis in Female Mice. JBMR Plus 2021; 5:e10486. [PMID: 33977204 PMCID: PMC8101617 DOI: 10.1002/jbm4.10486] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 02/22/2021] [Accepted: 02/28/2021] [Indexed: 12/11/2022] Open
Abstract
The mammalian target of rapamycin complex 1 (mTORC1) complex is the major nutrient sensor in mammalian cells that responds to amino acids, energy levels, growth factors, and hormones, such as insulin, to control anabolic and catabolic processes. We have recently shown that suppression of the mTORC1 complex in bone‐forming osteoblasts (OBs) improved glucose handling in male mice fed a normal or obesogenic diet. Mechanistically, this occurs, at least in part, by increasing OB insulin sensitivity leading to upregulation of glucose uptake and glycolysis. Given previously reported sex‐dependent differences observed upon antagonism of mTORC1 signaling, we investigated the metabolic and skeletal effects of genetic inactivation of preosteoblastic‐mTORC1 in female mice. Eight‐week‐old control diet (CD)‐fed Rptorob−/− mice had a low bone mass with a significant reduction in trabecular bone volume and trabecular number, reduced cortical bone thickness, and increased marrow adiposity. Despite no changes in body composition, CD‐fed Rptorob−/− mice exhibited significant lower fasting insulin and glucose levels and increased insulin sensitivity. Upon high‐fat diet (HFD) feeding, Rptorob−/− mice were resistant to a diet‐induced increase in whole‐body and total fat mass and protected from the development of diet‐induced insulin resistance. Notably, although 12 weeks of HFD increased marrow adiposity, with minimal changes in both trabecular and cortical bone in the female control mice, marrow adiposity was significantly reduced in HFD‐fed Rptorob−/− compared to both HFD‐fed control and CD‐fed Rptorob−/− mice. Collectively, our results demonstrate that mTORC1 function in preosteoblasts is crucial for skeletal development and skeletal regulation of glucose homeostasis in both male and female mice. Importantly, loss of mTORC1 function in OBs results in metabolic and physiological adaptations that mirror a caloric restriction phenotype (under CD) and protects against HFD‐induced obesity, associated insulin resistance, and marrow adiposity expansion. These results highlight the critical contribution of the skeleton in the regulation of whole‐body energy homeostasis. © 2021 The Authors. JBMR Plus published by Wiley Periodicals LLC on behalf of American Society for Bone and Mineral Research.
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Affiliation(s)
- Pawanrat Tangseefa
- Adelaide Medical School, Faculty of Health and Medical Science University of Adelaide Adelaide South Australia Australia.,Cancer Program, Precision Medicine Theme, South Australian Health and Medical Research Institute Adelaide South Australia Australia
| | - Sally K Martin
- Adelaide Medical School, Faculty of Health and Medical Science University of Adelaide Adelaide South Australia Australia.,Cancer Program, Precision Medicine Theme, South Australian Health and Medical Research Institute Adelaide South Australia Australia
| | - Agnieszka Arthur
- Adelaide Medical School, Faculty of Health and Medical Science University of Adelaide Adelaide South Australia Australia.,Cancer Program, Precision Medicine Theme, South Australian Health and Medical Research Institute Adelaide South Australia Australia
| | - Vasilios Panagopoulos
- Adelaide Medical School, Faculty of Health and Medical Science University of Adelaide Adelaide South Australia Australia.,Cancer Program, Precision Medicine Theme, South Australian Health and Medical Research Institute Adelaide South Australia Australia
| | - Amanda J Page
- Adelaide Medical School, Faculty of Health and Medical Science University of Adelaide Adelaide South Australia Australia.,Nutrition, Diabetes & Gut Health Program, Lifelong Health Theme, South Australian Health and Medical Research Institute Adelaide South Australia Australia
| | - Gary A Wittert
- Adelaide Medical School, Faculty of Health and Medical Science University of Adelaide Adelaide South Australia Australia.,Nutrition, Diabetes & Gut Health Program, Lifelong Health Theme, South Australian Health and Medical Research Institute Adelaide South Australia Australia.,Freemasons Foundation Centre for Men's Health University of Adelaide Adelaide South Australia Australia
| | - Christopher G Proud
- Nutrition, Diabetes & Gut Health Program, Lifelong Health Theme, South Australian Health and Medical Research Institute Adelaide South Australia Australia.,School of Biological Sciences, University of Adelaide Adelaide South Australia Australia
| | - Stephen Fitter
- Adelaide Medical School, Faculty of Health and Medical Science University of Adelaide Adelaide South Australia Australia.,Cancer Program, Precision Medicine Theme, South Australian Health and Medical Research Institute Adelaide South Australia Australia
| | - Andrew C W Zannettino
- Adelaide Medical School, Faculty of Health and Medical Science University of Adelaide Adelaide South Australia Australia.,Cancer Program, Precision Medicine Theme, South Australian Health and Medical Research Institute Adelaide South Australia Australia.,Central Adelaide Local Health Network Adelaide South Australia Australia
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26
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Mahmoud M, Kokozidou M, Auffarth A, Schulze-Tanzil G. The Relationship between Diabetes Mellitus Type II and Intervertebral Disc Degeneration in Diabetic Rodent Models: A Systematic and Comprehensive Review. Cells 2020; 9:cells9102208. [PMID: 33003542 PMCID: PMC7600368 DOI: 10.3390/cells9102208] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 09/22/2020] [Accepted: 09/23/2020] [Indexed: 12/13/2022] Open
Abstract
The number of diabetic patients grows constantly worldwide. Many patients suffer simultaneously from diabetes mellitus type 2 (T2DM) and intervertebral disc disease (IVDD), suggesting a strong link between T2DM and IVDD. T2DM rodent models provide versatile tools to study this interrelation. We hypothesized that the previously achieved studies in rodents approved it. Performing a search in the publicly available electronic databases according to our inclusion (e.g., experimental study with clearly outlined methods investigating IVDD in diabetic rodent models) and exclusion (e.g., non-experimental) criteria, we included 23 studies from 1992 to 2020 analyzing different aspects of IVDD in diabetic rodents, such as on pathogenesis (e.g., effects of hyperglycemia on IVD cells, sirtuin (SIRT)1/p53 axis in the interrelation between T2DM and IVDD), risk factors (e.g., high content of advanced glycation end-products (AGEs) in modern diets), therapeutical approaches (e.g., insulin-like growth factor (IGF-I)), and prophylaxis. Regarding their quality, 12 studies were classified as high, six as moderate, and five as low. One strong, 18 moderate, and three mild evidences of the link between DM and IVDD in rodents were found, while only one study has not approved this link. We concluded that T2DM has a devastating effect on IVD, particularly in advanced cases, which needs to be further evaluated.
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Affiliation(s)
- Mohamed Mahmoud
- Department of Anatomy Paracelsus Medical University, Nuremberg and Salzburg, 90419 Nuremberg, Germany; (M.M.); (M.K.)
| | - Maria Kokozidou
- Department of Anatomy Paracelsus Medical University, Nuremberg and Salzburg, 90419 Nuremberg, Germany; (M.M.); (M.K.)
| | - Alexander Auffarth
- Department of Orthopedics and Traumatology, Paracelsus Medical University, 5020 Salzburg, Austria;
| | - Gundula Schulze-Tanzil
- Department of Anatomy Paracelsus Medical University, Nuremberg and Salzburg, 90419 Nuremberg, Germany; (M.M.); (M.K.)
- Correspondence: ; Tel.: +49-(0)-911-398-6772
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27
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Kanakis I, Alameddine M, Scalabrin M, van 't Hof RJ, Liloglou T, Ozanne SE, Goljanek-Whysall K, Vasilaki A. Low protein intake during reproduction compromises the recovery of lactation-induced bone loss in female mouse dams without affecting skeletal muscles. FASEB J 2020; 34:11844-11859. [PMID: 32652768 DOI: 10.1096/fj.202001131r] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 06/10/2020] [Accepted: 06/22/2020] [Indexed: 12/20/2022]
Abstract
Lactation-induced bone loss occurs due to high calcium requirements for fetal growth but skeletal recovery is normally achieved promptly postweaning. Dietary protein is vital for fetus and mother but the effects of protein undernutrition on the maternal skeleton and skeletal muscles are largely unknown. We used mouse dams fed with normal (N, 20%) or low (L, 8%) protein diet during gestation and lactation and maintained on the same diets (NN, LL) or switched from low to normal (LN) during a 28 d skeletal restoration period post lactation. Skeletal muscle morphology and neuromuscular junction integrity was not different between any of the groups. However, dams fed the low protein diet showed extensive bone loss by the end of lactation, followed by full skeletal recovery in NN dams, partial recovery in LN and poor bone recovery in LL dams. Primary osteoblasts from low protein diet fed mice showed decreased in vitro bone formation and decreased osteogenic marker gene expression; promoter methylation analysis by pyrosequencing showed no differences in Bmpr1a, Ptch1, Sirt1, Osx, and Igf1r osteoregulators, while miR-26a, -34a, and -125b expression was found altered in low protein fed mice. Therefore, normal protein diet is indispensable for maternal musculoskeletal health during the reproductive period.
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Affiliation(s)
- Ioannis Kanakis
- Institute of Life Course and Medical Sciences, The MRC - Versus Arthritis Centre for Integrated Research into Musculoskeletal Ageing (CIMA), University of Liverpool, Liverpool, UK
| | - Moussira Alameddine
- Institute of Life Course and Medical Sciences, The MRC - Versus Arthritis Centre for Integrated Research into Musculoskeletal Ageing (CIMA), University of Liverpool, Liverpool, UK
| | - Mattia Scalabrin
- Institute of Life Course and Medical Sciences, The MRC - Versus Arthritis Centre for Integrated Research into Musculoskeletal Ageing (CIMA), University of Liverpool, Liverpool, UK
| | - Rob J van 't Hof
- Institute of Life Course and Medical Sciences, The MRC - Versus Arthritis Centre for Integrated Research into Musculoskeletal Ageing (CIMA), University of Liverpool, Liverpool, UK
| | - Triantafillos Liloglou
- Department of Molecular and Clinical Cancer Medicine, Institute of Translational Medicine, University of Liverpool, UK
| | - Susan E Ozanne
- MRC Metabolic Diseases Unit, Metabolic Research Laboratories, University of Cambridge, Cambridge, UK
| | - Katarzyna Goljanek-Whysall
- Institute of Life Course and Medical Sciences, The MRC - Versus Arthritis Centre for Integrated Research into Musculoskeletal Ageing (CIMA), University of Liverpool, Liverpool, UK.,Department of Physiology, School of Medicine, NUI Galway, Galway, Ireland
| | - Aphrodite Vasilaki
- Institute of Life Course and Medical Sciences, The MRC - Versus Arthritis Centre for Integrated Research into Musculoskeletal Ageing (CIMA), University of Liverpool, Liverpool, UK
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28
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Chen T, Hill JT, Moore TM, Cheung ECK, Olsen ZE, Piorczynski TB, Marriott TD, Tessem JS, Walton CM, Bikman BT, Hansen JM, Thomson DM. Lack of skeletal muscle liver kinase B1 alters gene expression, mitochondrial content, inflammation and oxidative stress without affecting high-fat diet-induced obesity or insulin resistance. Biochim Biophys Acta Mol Basis Dis 2020; 1866:165805. [PMID: 32339642 DOI: 10.1016/j.bbadis.2020.165805] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 04/02/2020] [Accepted: 04/16/2020] [Indexed: 12/28/2022]
Abstract
Ad libitum high-fat diet (HFD) induces obesity and skeletal muscle metabolic dysfunction. Liver kinase B1 (LKB1) regulates skeletal muscle metabolism by controlling the AMP-activated protein kinase family, but its importance in regulating muscle gene expression and glucose tolerance in obese mice has not been established. The purpose of this study was to determine how the lack of LKB1 in skeletal muscle (KO) affects gene expression and glucose tolerance in HFD-fed, obese mice. KO and littermate control wild-type (WT) mice were fed a standard diet or HFD for 14 weeks. RNA sequencing, and subsequent analysis were performed to assess mitochondrial content and respiration, inflammatory status, glucose and insulin tolerance, and muscle anabolic signaling. KO did not affect body weight gain on HFD, but heavily impacted mitochondria-, oxidative stress-, and inflammation-related gene expression. Accordingly, mitochondrial protein content and respiration were suppressed while inflammatory signaling and markers of oxidative stress were elevated in obese KO muscles. KO did not affect glucose or insulin tolerance. However, fasting serum insulin and skeletal muscle insulin signaling were higher in the KO mice. Furthermore, decreased muscle fiber size in skmLKB1-KO mice was associated with increased general protein ubiquitination and increased expression of several ubiquitin ligases, but not muscle ring finger 1 or atrogin-1. Taken together, these data suggest that the lack of LKB1 in skeletal muscle does not exacerbate obesity or insulin resistance in mice on a HFD, despite impaired mitochondrial content and function and elevated inflammatory signaling and oxidative stress.
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Affiliation(s)
- Ting Chen
- Department of Physiology and Developmental Biology, Brigham Young University, Provo, UT 84602, USA
| | - Jonathon T Hill
- Department of Physiology and Developmental Biology, Brigham Young University, Provo, UT 84602, USA
| | - Timothy M Moore
- David Geffen School of Medicine, Department of Medicine, University of California, Los Angeles, CA 90095, USA
| | - Eric C K Cheung
- Department of Physiology and Developmental Biology, Brigham Young University, Provo, UT 84602, USA
| | - Zachary E Olsen
- Department of Physiology and Developmental Biology, Brigham Young University, Provo, UT 84602, USA
| | - Ted B Piorczynski
- Department of Physiology and Developmental Biology, Brigham Young University, Provo, UT 84602, USA
| | - Tanner D Marriott
- Department of Physiology and Developmental Biology, Brigham Young University, Provo, UT 84602, USA
| | - Jeffery S Tessem
- Department of Nutrition, Dietetics and Food Science, Brigham Young University, Provo, UT 84602, USA
| | - Chase M Walton
- Department of Physiology and Developmental Biology, Brigham Young University, Provo, UT 84602, USA
| | - Benjamin T Bikman
- Department of Physiology and Developmental Biology, Brigham Young University, Provo, UT 84602, USA
| | - Jason M Hansen
- Department of Physiology and Developmental Biology, Brigham Young University, Provo, UT 84602, USA
| | - David M Thomson
- Department of Physiology and Developmental Biology, Brigham Young University, Provo, UT 84602, USA; Department of Nutrition, Dietetics and Food Science, Brigham Young University, Provo, UT 84602, USA.
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29
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Tratwal J, Labella R, Bravenboer N, Kerckhofs G, Douni E, Scheller EL, Badr S, Karampinos DC, Beck-Cormier S, Palmisano B, Poloni A, Moreno-Aliaga MJ, Fretz J, Rodeheffer MS, Boroumand P, Rosen CJ, Horowitz MC, van der Eerden BCJ, Veldhuis-Vlug AG, Naveiras O. Reporting Guidelines, Review of Methodological Standards, and Challenges Toward Harmonization in Bone Marrow Adiposity Research. Report of the Methodologies Working Group of the International Bone Marrow Adiposity Society. Front Endocrinol (Lausanne) 2020; 11:65. [PMID: 32180758 PMCID: PMC7059536 DOI: 10.3389/fendo.2020.00065] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Accepted: 01/31/2020] [Indexed: 12/14/2022] Open
Abstract
The interest in bone marrow adiposity (BMA) has increased over the last decade due to its association with, and potential role, in a range of diseases (osteoporosis, diabetes, anorexia, cancer) as well as treatments (corticosteroid, radiation, chemotherapy, thiazolidinediones). However, to advance the field of BMA research, standardization of methods is desirable to increase comparability of study outcomes and foster collaboration. Therefore, at the 2017 annual BMA meeting, the International Bone Marrow Adiposity Society (BMAS) founded a working group to evaluate methodologies in BMA research. All BMAS members could volunteer to participate. The working group members, who are all active preclinical or clinical BMA researchers, searched the literature for articles investigating BMA and discussed the results during personal and telephone conferences. According to the consensus opinion, both based on the review of the literature and on expert opinion, we describe existing methodologies and discuss the challenges and future directions for (1) histomorphometry of bone marrow adipocytes, (2) ex vivo BMA imaging, (3) in vivo BMA imaging, (4) cell isolation, culture, differentiation and in vitro modulation of primary bone marrow adipocytes and bone marrow stromal cell precursors, (5) lineage tracing and in vivo BMA modulation, and (6) BMA biobanking. We identify as accepted standards in BMA research: manual histomorphometry and osmium tetroxide 3D contrast-enhanced μCT for ex vivo quantification, specific MRI sequences (WFI and H-MRS) for in vivo studies, and RT-qPCR with a minimal four gene panel or lipid-based assays for in vitro quantification of bone marrow adipogenesis. Emerging techniques are described which may soon come to complement or substitute these gold standards. Known confounding factors and minimal reporting standards are presented, and their use is encouraged to facilitate comparison across studies. In conclusion, specific BMA methodologies have been developed. However, important challenges remain. In particular, we advocate for the harmonization of methodologies, the precise reporting of known confounding factors, and the identification of methods to modulate BMA independently from other tissues. Wider use of existing animal models with impaired BMA production (e.g., Pfrt-/-, KitW/W-v) and development of specific BMA deletion models would be highly desirable for this purpose.
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Affiliation(s)
- Josefine Tratwal
- Laboratory of Regenerative Hematopoiesis, Institute of Bioengineering and Swiss Institute for Experimental Cancer Research, Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Rossella Labella
- Tissue and Tumour Microenvironments Lab, The Kennedy Institute of Rheumatology, University of Oxford, Oxford, United Kingdom
| | - Nathalie Bravenboer
- Department of Clinical Chemistry, Amsterdam University Medical Centers, Vrije Universiteit, Amsterdam Movement Sciences, Amsterdam, Netherlands
- Section of Endocrinology, Department of Internal Medicine, Center for Bone Quality, Leiden University Medical Center, Leiden, Netherlands
| | - Greet Kerckhofs
- Biomechanics Lab, Institute of Mechanics, Materials and Civil Engineering, UCLouvain, Louvain-la-Neuve, Belgium
- Department Materials Engineering, KU Leuven, Leuven, Belgium
| | - Eleni Douni
- Laboratory of Genetics, Department of Biotechnology, Agricultural University of Athens, Athens, Greece
- Institute for Bioinnovation, Biomedical Sciences Research Center Alexander Fleming, Athens, Greece
| | - Erica L. Scheller
- Division of Bone and Mineral Diseases, Department of Medicine, Washington University, St. Louis, MO, United States
| | - Sammy Badr
- Univ. Lille, EA 4490 - PMOI - Physiopathologie des Maladies Osseuses Inflammatoires, Lille, France
- CHU Lille, Service de Radiologie et Imagerie Musculosquelettique, Lille, France
| | - Dimitrios C. Karampinos
- Department of Diagnostic and Interventional Radiology, Technical University of Munich, Munich, Germany
| | - Sarah Beck-Cormier
- Inserm, UMR 1229, RMeS, Regenerative Medicine and Skeleton, Université de Nantes, ONIRIS, Nantes, France
- Université de Nantes, UFR Odontologie, Nantes, France
| | - Biagio Palmisano
- Department of Genetics and Development, Columbia University Irving Medical Center, New York, NY, United States
| | - Antonella Poloni
- Hematology, Department of Clinic and Molecular Science, Università Politecnica Marche-AOU Ospedali Riuniti, Ancona, Italy
| | - Maria J. Moreno-Aliaga
- Centre for Nutrition Research and Department of Nutrition, Food Science and Physiology, School of Pharmacy and Nutrition, University of Navarra, Pamplona, Spain
- IdiSNA, Navarra's Health Research Institute, Pamplona, Spain
- CIBERobn Physiopathology of Obesity and Nutrition, Centre of Biomedical Research Network, ISCIII, Madrid, Spain
| | - Jackie Fretz
- Department of Orthopaedics and Rehabilitation, Cellular and Developmental Biology, Yale University School of Medicine, New Haven, CT, United States
| | - Matthew S. Rodeheffer
- Department of Comparative Medicine and Molecular, Cellular and Developmental Biology, Yale University School of Medicine, New Haven, CT, United States
| | - Parastoo Boroumand
- Cell Biology Program, The Hospital for Sick Children, Toronto, ON, Canada
| | - Clifford J. Rosen
- Maine Medical Center Research Institute, Center for Clinical and Translational Research, Scarborough, ME, United States
| | - Mark C. Horowitz
- Department of Orthopaedics and Rehabilitation, Yale University School of Medicine, New Haven, CT, United States
| | - Bram C. J. van der Eerden
- Laboratory for Calcium and Bone Metabolism, Department of Internal Medicine, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Annegreet G. Veldhuis-Vlug
- Section of Endocrinology, Department of Internal Medicine, Center for Bone Quality, Leiden University Medical Center, Leiden, Netherlands
- Maine Medical Center Research Institute, Center for Clinical and Translational Research, Scarborough, ME, United States
- Jan van Goyen Medical Center/OLVG Hospital, Department of Internal Medicine, Amsterdam, Netherlands
- *Correspondence: Annegreet G. Veldhuis-Vlug
| | - Olaia Naveiras
- Laboratory of Regenerative Hematopoiesis, Institute of Bioengineering and Swiss Institute for Experimental Cancer Research, Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
- Hematology Service, Departments of Oncology and Laboratory Medicine, Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland
- Olaia Naveiras ;
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Alekos NS, Moorer MC, Riddle RC. Dual Effects of Lipid Metabolism on Osteoblast Function. Front Endocrinol (Lausanne) 2020; 11:578194. [PMID: 33071983 PMCID: PMC7538543 DOI: 10.3389/fendo.2020.578194] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 08/25/2020] [Indexed: 12/14/2022] Open
Abstract
The skeleton is a dynamic and metabolically active organ with the capacity to influence whole body metabolism. This newly recognized function has propagated interest in the connection between bone health and metabolic dysfunction. Osteoblasts, the specialized mesenchymal cells responsible for the production of bone matrix and mineralization, rely on multiple fuel sources. The utilization of glucose by osteoblasts has long been a focus of research, however, lipids and their derivatives, are increasingly recognized as a vital energy source. Osteoblasts possess the necessary receptors and catabolic enzymes for internalization and utilization of circulating lipids. Disruption of these processes can impair osteoblast function, resulting in skeletal deficits while simultaneously altering whole body lipid homeostasis. This article provides an overview of the metabolism of postprandial and stored lipids and the osteoblast's ability to acquire and utilize these molecules. We focus on the requirement for fatty acid oxidation and the pathways regulating this function as well as the negative impact of dyslipidemia on the osteoblast and skeletal health. These findings provide key insights into the nuances of lipid metabolism in influencing skeletal homeostasis which are critical to appreciate the extent of the osteoblast's role in metabolic homeostasis.
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Affiliation(s)
- Nathalie S. Alekos
- Department of Orthopaedic Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Megan C. Moorer
- Department of Orthopaedic Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, United States
- Baltimore Veterans Administration Medical Center, Baltimore, MD, United States
| | - Ryan C. Riddle
- Department of Orthopaedic Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, United States
- Baltimore Veterans Administration Medical Center, Baltimore, MD, United States
- *Correspondence: Ryan C. Riddle
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Chen F, Wang Y, Wang H, Dong Z, Wang Y, Zhang M, Li J, Shao S, Yu C, Huan Z, Xu J. Flaxseed oil ameliorated high-fat-diet-induced bone loss in rats by promoting osteoblastic function in rat primary osteoblasts. Nutr Metab (Lond) 2019; 16:71. [PMID: 31636691 PMCID: PMC6798477 DOI: 10.1186/s12986-019-0393-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Accepted: 09/06/2019] [Indexed: 12/19/2022] Open
Abstract
Background α-Linolenic acid (ALA) is a plant-derived omega-3 unsaturated fatty acid that is rich in flaxseed oil (FO). The effect of FO on bone health is controversial. This study aims to evaluate the effect of FO on bone damage induced by a high-fat diet (HFD) and to explore the possible mechanism. Methods Male Sprague-Dawley rats were fed a normal control diet (NC, 10% fat), FO diet (NY, 10% fat), HFD (60% fat), or HFD containing 10% FO (HY, 60% fat) for 22 weeks. Micro CT and three-point bending tests were conducted to evaluate bone microstructure and biomechanics. Serum was collected for the detection of ALP, P1NP, and CTX-1. Rat primary osteoblasts (OBs) were treated with different concentrations of ALA with or without palmitic acid (PA) treatment. The ALP activity, osteogenic-related gene and protein expression were measured. Results Rats in the HFD group displayed decreased biomechanical properties, such as maximum load, maximum fracture load, ultimate tensile strength, stiffness, energy absorption, and elastic modulus, compared with the NC group (p < 0.05). However, HY attenuated the HFD-induced decreases in bone biomechanical properties, including maximum load, maximum fracture load, and ultimate tensile strength (p < 0.05). Trabecular bone markers such as trabecular volume bone mineral density (Tb. vBMD), trabecular bone volume/total volume (Tb. BV/TV), trabecular number (Tb. N), trabecular thickness (Tb. Th) were decreased, trabecular separation (Tb. Sp) and the structure model index (SMI) were increased in the HFD group compared with the NC group, and all parameters were remarkably improved in the HY group compared to the HFD group (p < 0.05). However, cortical bone markers such as cortical volume bone mineral density (Ct. vBMD), cortical bone volume/total volume (Ct. BV/TV) and cortical bone thickness (Ct. Th) were not significantly different among all groups. Moreover, the serum bone formation markers ALP and P1NP were higher and the bone resorption marker CTX-1 was lower in the HY group compared with levels in the HFD group. Compared with the NC group, the NY group had no difference in the above indicators. In rat primary OBs, PA treatment significantly decreased ALP activity and osteogenic gene and protein (β-catenin, RUNX2, and osterix) expression, and ALA dose-dependently restored the inhibition induced by PA. Conclusions FO might be a potential therapeutic agent for HFD-induced bone loss, most likely by promoting osteogenesis.
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Affiliation(s)
- Fulian Chen
- 1Department of Endocrinology, Shandong Provincial Hospital affiliated to Shandong University, Shandong Provincial Key Laboratory of Endocrinology and Lipid Metabolism, Institute of Endocrinology and Metabolism, Shandong Academy of Clinical Medicine, Jinan, Shandong 250021 People's Republic of China.,2Department of Endocrinology, Affiliated Yidu Central Hospital of Weifang Medical College, Weifang, Shandong 262500 People's Republic of China
| | - Yan Wang
- 1Department of Endocrinology, Shandong Provincial Hospital affiliated to Shandong University, Shandong Provincial Key Laboratory of Endocrinology and Lipid Metabolism, Institute of Endocrinology and Metabolism, Shandong Academy of Clinical Medicine, Jinan, Shandong 250021 People's Republic of China.,Department of Endocrinology, The Second Affiliated Hospital of Shandong First Medical University, Tai'an, Shandong 271000 People's Republic of China
| | - Hongwei Wang
- 1Department of Endocrinology, Shandong Provincial Hospital affiliated to Shandong University, Shandong Provincial Key Laboratory of Endocrinology and Lipid Metabolism, Institute of Endocrinology and Metabolism, Shandong Academy of Clinical Medicine, Jinan, Shandong 250021 People's Republic of China.,4Department of Endocrinology, People's Hospital of Rizhao, Rizhao, Shandong 276800 People's Republic of China
| | - Zhenhua Dong
- 1Department of Endocrinology, Shandong Provincial Hospital affiliated to Shandong University, Shandong Provincial Key Laboratory of Endocrinology and Lipid Metabolism, Institute of Endocrinology and Metabolism, Shandong Academy of Clinical Medicine, Jinan, Shandong 250021 People's Republic of China.,5Department of Endocrinology, Jinan Central Hospital affiliated to Shandong University, Jinan, Shandong 250021 People's Republic of China
| | - Yan Wang
- 1Department of Endocrinology, Shandong Provincial Hospital affiliated to Shandong University, Shandong Provincial Key Laboratory of Endocrinology and Lipid Metabolism, Institute of Endocrinology and Metabolism, Shandong Academy of Clinical Medicine, Jinan, Shandong 250021 People's Republic of China
| | - Mengqi Zhang
- 1Department of Endocrinology, Shandong Provincial Hospital affiliated to Shandong University, Shandong Provincial Key Laboratory of Endocrinology and Lipid Metabolism, Institute of Endocrinology and Metabolism, Shandong Academy of Clinical Medicine, Jinan, Shandong 250021 People's Republic of China
| | - Jiaxuan Li
- 1Department of Endocrinology, Shandong Provincial Hospital affiliated to Shandong University, Shandong Provincial Key Laboratory of Endocrinology and Lipid Metabolism, Institute of Endocrinology and Metabolism, Shandong Academy of Clinical Medicine, Jinan, Shandong 250021 People's Republic of China
| | - Shanshan Shao
- 1Department of Endocrinology, Shandong Provincial Hospital affiliated to Shandong University, Shandong Provincial Key Laboratory of Endocrinology and Lipid Metabolism, Institute of Endocrinology and Metabolism, Shandong Academy of Clinical Medicine, Jinan, Shandong 250021 People's Republic of China
| | - Chunxiao Yu
- 1Department of Endocrinology, Shandong Provincial Hospital affiliated to Shandong University, Shandong Provincial Key Laboratory of Endocrinology and Lipid Metabolism, Institute of Endocrinology and Metabolism, Shandong Academy of Clinical Medicine, Jinan, Shandong 250021 People's Republic of China
| | - Zhikun Huan
- 1Department of Endocrinology, Shandong Provincial Hospital affiliated to Shandong University, Shandong Provincial Key Laboratory of Endocrinology and Lipid Metabolism, Institute of Endocrinology and Metabolism, Shandong Academy of Clinical Medicine, Jinan, Shandong 250021 People's Republic of China
| | - Jin Xu
- 1Department of Endocrinology, Shandong Provincial Hospital affiliated to Shandong University, Shandong Provincial Key Laboratory of Endocrinology and Lipid Metabolism, Institute of Endocrinology and Metabolism, Shandong Academy of Clinical Medicine, Jinan, Shandong 250021 People's Republic of China
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32
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Votava L, Schwartz AG, Harasymowicz NS, Wu CL, Guilak F. Effects of dietary fatty acid content on humeral cartilage and bone structure in a mouse model of diet-induced obesity. J Orthop Res 2019; 37:779-788. [PMID: 30644575 PMCID: PMC6662729 DOI: 10.1002/jor.24219] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Accepted: 01/08/2019] [Indexed: 02/04/2023]
Abstract
Obesity is a primary risk factor for osteoarthritis (OA), and previous studies have shown that dietary content may play an important role in the pathogenesis of cartilage and bone in knee OA. Several previous studies have shown that the ratio of ω-3 polyunsaturated fatty acids (PUFAs), ω-6 PUFAs, and saturated fatty acids can significantly influence bone structure and OA progression. However, the influence of obesity or dietary fatty acid content on shoulder OA is not well understood. The goal of this study was to investigate the role of dietary fatty acid content on bone and cartilage structure in the mouse shoulder in a model of diet-induced obesity. For 24 weeks, mice were fed control or high-fat diets supplemented with ω-3 PUFAs, ω-6 PUFAs, or saturated fatty acids. The humeral heads were analyzed for bone morphometry and mineral density by microCT. Cartilage structure and joint synovitis were determined by histological grading, and microscale mechanical properties of the cartilage extracellular and pericellular matrices were quantified using atomic force microscopy. Diet-induced obesity significantly altered bone morphology and mineral density in a manner that was dependent on dietary free fatty acid content. In general, high-fat diet groups showed decreased bone quality, with the ω-3 diet being partially protective. Cartilage mechanical properties and OA scores showed no changes with obesity or diet. These findings are consistent with clinical literature showing little if any relationship between obesity and shoulder OA (unlike knee OA), but suggest that diet-induced obesity may influence other joint tissues. © 2019 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res.
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Affiliation(s)
- Lauren Votava
- Department of Orthopaedic Surgery, Washington University, Saint Louis, MO 63110,Shriners Hospitals for Children – St. Louis, St. Louis MO 63110,Department of Biomedical Engineering, Washington University, Saint Louis, MO 63110
| | - Andrea G. Schwartz
- Department of Orthopaedic Surgery, Washington University, Saint Louis, MO 63110,Shriners Hospitals for Children – St. Louis, St. Louis MO 63110
| | - Natalia S. Harasymowicz
- Department of Orthopaedic Surgery, Washington University, Saint Louis, MO 63110,Shriners Hospitals for Children – St. Louis, St. Louis MO 63110
| | - Chia-Lung Wu
- Department of Orthopaedic Surgery, Washington University, Saint Louis, MO 63110,Shriners Hospitals for Children – St. Louis, St. Louis MO 63110
| | - Farshid Guilak
- Department of Orthopaedic Surgery, Washington University, Saint Louis, MO 63110,Shriners Hospitals for Children – St. Louis, St. Louis MO 63110,Department of Biomedical Engineering, Washington University, Saint Louis, MO 63110
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