1
|
Avey AM, Valdez O, Baar K. Characterization of an in vitro engineered ligament model. Matrix Biol Plus 2024; 21:100140. [PMID: 38235356 PMCID: PMC10792631 DOI: 10.1016/j.mbplus.2023.100140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 12/10/2023] [Accepted: 12/20/2023] [Indexed: 01/19/2024] Open
Abstract
In vivo tendon and ligament research can be limited by the difficultly of obtaining tissue samples that can be biochemically analyzed. In this study, we characterize the most widely used in vitro engineered ligament model. Despite previous works suggesting multiple passages change gene expression in 2D primary tenocytes, we found no relationship between passage number and expression of classical tendon fibroblast markers across different biological donors. When engineered into 3D ligaments, there was an increase in maximal tensile load between 7 and 14 days in culture, that corresponded with an increase in collagen content. By contrast, percent collagen increased logarithmically from Day 7 to Day 14, and this was similar to the increase in the modulus of the tissue. Importantly, there was no relationship between passage number and mechanical function or collagen content in the two independent donors tested. These results suggest that the model develops quickly and is reliable across differing passage numbers. This provides the field with the ability to 1) consistently determine functional changes of interventions out to passage number 10; and 2) to time interventions to the appropriate developmental stage: developing/regenerating (Day 7) or mature (Day 14) tissue.
Collapse
Affiliation(s)
- Alec M. Avey
- Department of Neurobiology, Physiology and Behavior, University of California Davis, Davis, CA 95616, United States
| | - Omar Valdez
- Department of Neurobiology, Physiology and Behavior, University of California Davis, Davis, CA 95616, United States
| | - Keith Baar
- Department of Neurobiology, Physiology and Behavior, University of California Davis, Davis, CA 95616, United States
- Department of Physiology and Membrane Biology, University of California Davis, Davis, CA 95616, United States
- VA Northern California Health Care System, Mather, CA 95655, USA
| |
Collapse
|
2
|
Mienaltowski MJ, Callahan M, Gonzales NL, Wong A. Examining the Potential of Vitamin C Supplementation in Tissue-Engineered Equine Superficial Digital Flexor Tendon Constructs. Int J Mol Sci 2023; 24:17098. [PMID: 38069418 PMCID: PMC10707379 DOI: 10.3390/ijms242317098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 11/26/2023] [Accepted: 12/01/2023] [Indexed: 12/18/2023] Open
Abstract
Because equine tendinopathies are slow to heal and often recur, therapeutic strategies are being considered that aid tendon repair. Given the success of utilizing vitamin C to promote tenogenesis in other species, we hypothesized that vitamin C supplementation would produce dose-dependent improvements in the tenogenic properties of tendon proper (TP) and peritenon (PERI) cells of the equine superficial digital flexor tendon (SDFT). Equine TP- and PERI-progenitor-cell-seeded fibrin three-dimensional constructs were supplemented with four concentrations of vitamin C. The gene expression profiles of the constructs were assessed with 3'-Tag-Seq and real-time quantitative polymerase chain reaction (RT-qPCR); collagen content and fibril ultrastructure were also analyzed. Moreover, cells were challenged with dexamethasone to determine the levels of cytoprotection afforded by vitamin C. Expression profiling demonstrated that vitamin C had an anti-inflammatory effect on TP and PERI cell constructs. Moreover, vitamin C supplementation mitigated the degenerative pathways seen in tendinopathy and increased collagen content in tendon constructs. When challenged with dexamethasone in two-dimensional culture, vitamin C had a cytoprotective effect for TP cells but not necessarily for PERI cells. Future studies will explore the effects of vitamin C on these cells during inflammation and within the tendon niche in vivo.
Collapse
Affiliation(s)
- Michael J. Mienaltowski
- Department of Animal Science, College of Agricultural & Environmental Sciences, University of California Davis, Davis, CA 95616, USA
| | - Mitchell Callahan
- Department of Animal Science, College of Agricultural & Environmental Sciences, University of California Davis, Davis, CA 95616, USA
| | - Nicole L. Gonzales
- School of Veterinary Medicine, University of California Davis, Davis, CA 95616, USA
| | - Angelique Wong
- Department of Animal Science, College of Agricultural & Environmental Sciences, University of California Davis, Davis, CA 95616, USA
| |
Collapse
|
3
|
Hjortshoej MH, Aagaard P, Storgaard CD, Juneja H, Lundbye‐Jensen J, Magnusson SP, Couppé C. Hormonal, immune, and oxidative stress responses to blood flow-restricted exercise. Acta Physiol (Oxf) 2023; 239:e14030. [PMID: 37732509 PMCID: PMC10909497 DOI: 10.1111/apha.14030] [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: 05/23/2023] [Revised: 07/12/2023] [Accepted: 07/30/2023] [Indexed: 09/22/2023]
Abstract
INTRODUCTION Heavy-load free-flow resistance exercise (HL-FFRE) is a widely used training modality. Recently, low-load blood-flow restricted resistance exercise (LL-BFRRE) has gained attention in both athletic and clinical settings as an alternative when conventional HL-FFRE is contraindicated or not tolerated. LL-BFRRE has been shown to result in physiological adaptations in muscle and connective tissue that are comparable to those induced by HL-FFRE. The underlying mechanisms remain unclear; however, evidence suggests that LL-BFRRE involves elevated metabolic stress compared to conventional free-flow resistance exercise (FFRE). AIM The aim was to evaluate the initial (<10 min post-exercise), intermediate (10-20 min), and late (>30 min) hormonal, immune, and oxidative stress responses observed following acute sessions of LL-BFRRE compared to FFRE in healthy adults. METHODS A systematic literature search of randomized and non-randomized studies was conducted in PubMed, Embase, Cochrane Central, CINAHL, and SPORTDiscus. The Cochrane Risk of Bias (RoB2, ROBINS-1) and TESTEX were used to evaluate risk of bias and study quality. Data extractions were based on mean change within groups. RESULTS A total of 12525 hits were identified, of which 29 articles were included. LL-BFRRE demonstrated greater acute increases in growth hormone responses when compared to overall FFRE at intermediate (SMD 2.04; 95% CI 0.87, 3.22) and late (SMD 2.64; 95% CI 1.13, 4.16) post-exercise phases. LL-BFRRE also demonstrated greater increase in testosterone responses compared to late LL-FFRE. CONCLUSION These results indicate that LL-BFRRE can induce increased or similar hormone and immune responses compared to LL-FFRE and HL-FFRE along with attenuated oxidative stress responses compared to HL-FFRE.
Collapse
Affiliation(s)
- M. H. Hjortshoej
- Institute of Sports Medicine Copenhagen, Department of Orthopedic SurgeryCopenhagen University Hospital Bispebjerg and FrederiksbergCopenhagenDenmark
- Center for Healthy Aging, Department of Clinical MedicineUniversity of CopenhagenCopenhagenDenmark
- Department of Physical and Occupational TherapyBispebjerg and Frederiksberg University HospitalCopenhagenDenmark
- Centre for Health and RehabilitationUniversity College AbsalonSlagelseDenmark
| | - P. Aagaard
- Department of Sports Science and Clinical BiomechanicsUniversity of Southern DenmarkOdenseDenmark
| | - C. D. Storgaard
- Institute of Sports Medicine Copenhagen, Department of Orthopedic SurgeryCopenhagen University Hospital Bispebjerg and FrederiksbergCopenhagenDenmark
- Center for Healthy Aging, Department of Clinical MedicineUniversity of CopenhagenCopenhagenDenmark
- Department of Nutrition, Exercise and Sports, Section of Integrative PhysiologyUniversity of CopenhagenCopenhagenDenmark
| | - H. Juneja
- Centre for Health and RehabilitationUniversity College AbsalonSlagelseDenmark
| | - J. Lundbye‐Jensen
- Department of Nutrition, Exercise and Sports, Section of Integrative PhysiologyUniversity of CopenhagenCopenhagenDenmark
| | - S. P. Magnusson
- Institute of Sports Medicine Copenhagen, Department of Orthopedic SurgeryCopenhagen University Hospital Bispebjerg and FrederiksbergCopenhagenDenmark
- Center for Healthy Aging, Department of Clinical MedicineUniversity of CopenhagenCopenhagenDenmark
- Department of Physical and Occupational TherapyBispebjerg and Frederiksberg University HospitalCopenhagenDenmark
| | - C. Couppé
- Institute of Sports Medicine Copenhagen, Department of Orthopedic SurgeryCopenhagen University Hospital Bispebjerg and FrederiksbergCopenhagenDenmark
- Center for Healthy Aging, Department of Clinical MedicineUniversity of CopenhagenCopenhagenDenmark
- Department of Physical and Occupational TherapyBispebjerg and Frederiksberg University HospitalCopenhagenDenmark
| |
Collapse
|
4
|
Pechanec MY, Beall JM, Katzman S, Maga EA, Mienaltowski MJ. Examining the Effects of In Vitro Co-Culture of Equine Adipose-Derived Mesenchymal Stem Cells With Tendon Proper and Peritenon Cells. J Equine Vet Sci 2023; 126:104262. [PMID: 36841345 DOI: 10.1016/j.jevs.2023.104262] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Revised: 01/26/2023] [Accepted: 02/20/2023] [Indexed: 02/27/2023]
Abstract
Tendinopathies remain the leading contributor to career-ending injuries in horses because of the complexity of tendon repair. As such, cell-based therapies like injections of adipose-derived mesenchymal stem cells (ADMSCs, or MSCs) into injured tendons are becoming increasingly popular though their long-term efficacy on a molecular and wholistic level remains contentious. Thus, we co-cultured equine MSCs with intrinsic (tendon proper) and extrinsic (peritenon) tendon cell populations to examine interactions between these cells. Gene expression for common tenogenic, perivascular, and differentiation markers was quantified at 48 and 120 hours. Additionally, cellular metabolism of proliferation was examined every 24 hours for peritenon and tendon proper cells co-cultured with MSCs. MSCs co-cultured with tendon proper or peritenon cells had altered expression profiles demonstrating trend toward tenogenic phenotype with the exception of decreases in type I collagen (COL1A1). Peritenon cells co-cultured with MSCs had a trending and significant decrease in biglycan (BGN) and CSPG4 at 48 hours and 120 hours but overall significant increases in lysyl oxidase (LOX), mohawk (MKX), and scleraxis (SCX) within 48 hours. Tendon proper cells co-cultured with MSCs also exhibited increases in LOX and SCX at 48 hours. Furthermore, cell proliferation improved overall for tendon proper cells co-cultured with MSCs. The co-culture study results suggest that adipose-derived MSCs contribute beneficially to tenogenic stimulation of peritenon or tendon proper cells.
Collapse
Affiliation(s)
- Monica Y Pechanec
- Department of Animal Science, University of California Davis, Davis, CA
| | - Jessica M Beall
- Department of Animal Science, University of California Davis, Davis, CA
| | - Scott Katzman
- School of Veterinary Medicine, University of California Davis, Davis, CA
| | - Elizabeth A Maga
- Department of Animal Science, University of California Davis, Davis, CA
| | | |
Collapse
|
5
|
Gesteira TF, Verma S, Coulson-Thomas VJ. Small leucine rich proteoglycans: Biology, function and their therapeutic potential in the ocular surface. Ocul Surf 2023; 29:521-536. [PMID: 37355022 PMCID: PMC11092928 DOI: 10.1016/j.jtos.2023.06.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 06/13/2023] [Accepted: 06/21/2023] [Indexed: 06/26/2023]
Abstract
Small leucine rich proteoglycans (SLRPs) are the largest family of proteoglycans, with 18 members that are subdivided into five classes. SLRPs are small in size and can be present in tissues as glycosylated and non-glycosylated proteins, and the most studied SLRPs include decorin, biglycan, lumican, keratocan and fibromodulin. SLRPs specifically bind to collagen fibrils, regulating collagen fibrillogenesis and the biomechanical properties of tissues, and are expressed at particularly high levels in fibrous tissues, such as the cornea. However, SLRPs are also very active components of the ECM, interacting with numerous growth factors, cytokines and cell surface receptors. Therefore, SLRPs regulate major cellular processes and have a central role in major fundamental biological processes, such as maintaining corneal homeostasis and transparency and regulating corneal wound healing. Over the years, mutations and/or altered expression of SLRPs have been associated with various corneal diseases, such as congenital stromal corneal dystrophy and cornea plana. Recently, there has been great interest in harnessing the various functions of SLRPs for therapeutic purposes. In this comprehensive review, we describe the structural features and the related functions of SLRPs, and how these affect the therapeutic potential of SLRPs, with special emphasis on the use of SLRPs for treating ocular surface pathologies.
Collapse
Affiliation(s)
| | - Sudhir Verma
- College of Optometry, University of Houston, USA; Department of Zoology, Deen Dayal Upadhyaya College, University of Delhi, Delhi, India
| | | |
Collapse
|
6
|
Adipose and Bone Marrow Derived-Mesenchymal Stromal Cells Express Similar Tenogenic Expression Levels when Subjected to Mechanical Uniaxial Stretching In Vitro. Stem Cells Int 2023; 2023:4907230. [PMID: 36756494 PMCID: PMC9902123 DOI: 10.1155/2023/4907230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 05/12/2022] [Accepted: 09/03/2022] [Indexed: 01/31/2023] Open
Abstract
The present study was conducted to determine whether adipose derived mesenchymal stromal cells (AD-MSCs) or bone marrow derived-MSCs (BM-MSCs) would provide superior tenogenic expressions when subjected to cyclical tensile loading. The results for this would indicate the best choice of MSCs source to be used for cell-based tendon repair strategies. Both AD-MSCs and BM-MSCs were obtained from ten adult donors (N = 10) and cultured in vitro. At passaged-2, cells from both groups were subjected to cyclical stretching at 1 Hz and 8% of strain. Cellular morphology, orientation, proliferation rate, protein, and gene expression levels were compared at 0, 24, and 48 hours of stretching. In both groups, mechanical stretching results in similar morphological changes, and the redirection of cell alignment is perpendicular to the direction of stretching. Loading at 8% strain did not significantly increase proliferation rates but caused an increase in total collagen expression and tenogenic gene expression levels. In both groups, these levels demonstrated no significant differences suggesting that in a similar loading environment, both cell types possess similar tenogenic potential. In conclusion, AD-MSCs and BM-MSCs both demonstrate similar tenogenic phenotypic and gene expression levels when subjected to cyclic tensile loading at 1 Hz and 8% strain, thus, suggesting that the use of either cell source may be suitable for tendon repair.
Collapse
|
7
|
Chen Z, Chen P, Zheng M, Gao J, Liu D, Wang A, Zheng Q, Leys T, Tai A, Zheng M. Challenges and perspectives of tendon-derived cell therapy for tendinopathy: from bench to bedside. Stem Cell Res Ther 2022; 13:444. [PMID: 36056395 PMCID: PMC9438319 DOI: 10.1186/s13287-022-03113-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Accepted: 08/03/2022] [Indexed: 11/18/2022] Open
Abstract
Tendon is composed of dense fibrous connective tissues, connecting muscle at the myotendinous junction (MTJ) to bone at the enthesis and allowing mechanical force to transmit from muscle to bone. Tendon diseases occur at different zones of the tendon, including enthesis, MTJ and midsubstance of the tendon, due to a variety of environmental and genetic factors which consequently result in different frequencies and recovery rates. Self-healing properties of tendons are limited, and cell therapeutic approaches in which injured tendon tissues are renewed by cell replenishment are highly sought after. Homologous use of individual’s tendon-derived cells, predominantly differentiated tenocytes and tendon-derived stem cells, is emerging as a treatment for tendinopathy through achieving minimal cell manipulation for clinical use. This is the first review summarizing the progress of tendon-derived cell therapy in clinical use and its challenges due to the structural complexity of tendons, heterogeneous composition of extracellular cell matrix and cells and unsuitable cell sources. Further to that, novel future perspectives to improve therapeutic effect in tendon-derived cell therapy based on current basic knowledge are discussed.
Collapse
Affiliation(s)
- Ziming Chen
- Division of Surgery, Centre for Orthopaedic Research, Medical School, The University of Western Australia, Nedlands, WA, 6009, Australia
| | - Peilin Chen
- Division of Surgery, Centre for Orthopaedic Research, Medical School, The University of Western Australia, Nedlands, WA, 6009, Australia
| | - Monica Zheng
- Department of Orthopaedic Surgery, Sir Charles Gairdner Hospital, Nedlands, WA, 6009, Australia
| | - Junjie Gao
- Perron Institute for Neurological and Translational Science, Nedlands, WA, 6009, Australia.,Department of Orthopaedic Surgery, Shanghai Jiao Tong University Affiliated Shanghai Sixth People's Hospital, Shanghai, 200233, China
| | - Delin Liu
- Division of Surgery, Centre for Orthopaedic Research, Medical School, The University of Western Australia, Nedlands, WA, 6009, Australia.,Perron Institute for Neurological and Translational Science, Nedlands, WA, 6009, Australia
| | - Allan Wang
- Division of Surgery, Centre for Orthopaedic Research, Medical School, The University of Western Australia, Nedlands, WA, 6009, Australia
| | - Qiujian Zheng
- The Second School of Clinical Medicine, Southern Medical University, Guangzhou, 510000, Guangdong, China.,Department of Orthopedics, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510000, Guangdong, China
| | - Toby Leys
- Department of Orthopaedic Surgery, Sir Charles Gairdner Hospital, Nedlands, WA, 6009, Australia
| | - Andrew Tai
- Perron Institute for Neurological and Translational Science, Nedlands, WA, 6009, Australia.
| | - Minghao Zheng
- Division of Surgery, Centre for Orthopaedic Research, Medical School, The University of Western Australia, Nedlands, WA, 6009, Australia. .,Perron Institute for Neurological and Translational Science, Nedlands, WA, 6009, Australia.
| |
Collapse
|
8
|
Xu X, Ha P, Yen E, Li C, Zheng Z. Small Leucine-Rich Proteoglycans in Tendon Wound Healing. Adv Wound Care (New Rochelle) 2022; 11:202-214. [PMID: 34978952 DOI: 10.1089/wound.2021.0069] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Significance: Tendon injury possesses a high morbidity rate and is difficult to achieve a satisfying prognosis with currently available treatment strategies. Current approaches used for tendon healing always lead to the formation of fibrovascular scar tissue, which significantly compromises the biomechanics of the healed tendon. Moreover, the related functional deficiency deteriorates over time with an increased injury recurrence risk. Small leucine-rich proteoglycans (SLRPs) link and interact with collagen fibrils to regulate tendon structure and biomechanics, which can provide a new and promising method in the field of tendon injury management. Recent Advances: The effect of SLRPs on tendon development has been extensively investigated. SLRP deficiency impairs tendon collagen fibril structure and biomechanic properties, while administration of SLRPs generally benefits tendon wound healing and regains better mechanical properties. Critical Issues: Current knowledge on the role of SLRPs in tendon development and regeneration mostly comes from uninjured knockout mice, and mainly focuses on the morphology description of collagen fibril profile and mechanical properties. Little is known about the regulatory mechanism on the molecular level. Future Directions: This article reviews the current knowledge in this highly translational topic and provides an evidence-based conclusion, thereby encouraging in-depth investigations of SLRPs in tendons and the development of SLRP-based treatments for desired tendon healing.
Collapse
Affiliation(s)
- Xue Xu
- Department of Oral and Maxillofacial Plastic and Traumatic Surgery, Beijing Stomatological Hospital of Capital Medical University, Beijing, People's Republic of China
- Division of Growth and Development, School of Dentistry, University of California, Los Angeles, Los Angeles, California, USA
| | - Pin Ha
- Division of Growth and Development, School of Dentistry, University of California, Los Angeles, Los Angeles, California, USA
| | - Emily Yen
- Arcadia High School, Arcadia, California, USA
| | - Chenshuang Li
- Department of Orthodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Zhong Zheng
- Division of Growth and Development, School of Dentistry, University of California, Los Angeles, Los Angeles, California, USA
- Division of Plastic and Reconstructive Surgery, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, USA
- Orthodontics, School of Dentistry, University of California, Los Angeles, Los Angeles, California, USA
| |
Collapse
|
9
|
Chen SH, Chen ZY, Lin YH, Chen SH, Chou PY, Kao HK, Lin FH. Extracellular Vesicles of Adipose-Derived Stem Cells Promote the Healing of Traumatized Achilles Tendons. Int J Mol Sci 2021; 22:ijms222212373. [PMID: 34830254 PMCID: PMC8618291 DOI: 10.3390/ijms222212373] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 11/11/2021] [Accepted: 11/13/2021] [Indexed: 12/12/2022] Open
Abstract
Healing of ruptured tendons remains a clinical challenge because of its slow progress and relatively weak mechanical force at an early stage. Extracellular vesicles (EVs) derived from mesenchymal stem cells (MSCs) have therapeutic potential for tissue regeneration. In this study, we isolated EVs from adipose-derived stem cells (ADSCs) and evaluated their ability to promote tendon regeneration. Our results indicated that ADSC-EVs significantly enhanced the proliferation and migration of tenocytes in vitro. To further study the roles of ADSC-EVs in tendon regeneration, ADSC-EVs were used in Achilles tendon repair in rabbits. The mechanical strength, histology, and protein expression in the injured tendon tissues significantly improved 4 weeks after ADSC-EV treatment. Decorin and biglycan were significantly upregulated in comparison to the untreated controls. In summary, ADSC-EVs stimulated the proliferation and migration of tenocytes and improved the mechanical strength of repaired tendons, suggesting that ADSC-EV treatment is a potential highly potent therapeutic strategy for tendon injuries.
Collapse
Affiliation(s)
- Shih-Heng Chen
- Institute of Biomedical Engineering, College of Medicine and College of Engineering, National Taiwan University, Taipei 10617, Taiwan; (S.-H.C.); (Z.-Y.C.); (S.-H.C.)
- Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital, Chang Gung University and Medical College, Taoyuan 33305, Taiwan; (Y.-H.L.); (P.-Y.C.)
| | - Zhi-Yu Chen
- Institute of Biomedical Engineering, College of Medicine and College of Engineering, National Taiwan University, Taipei 10617, Taiwan; (S.-H.C.); (Z.-Y.C.); (S.-H.C.)
- Division of Biomedical Engineering and Nanomedicine Research, National Health Research Institutes, Miaoli 35053, Taiwan
| | - Ya-Hsuan Lin
- Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital, Chang Gung University and Medical College, Taoyuan 33305, Taiwan; (Y.-H.L.); (P.-Y.C.)
| | - Shih-Hsien Chen
- Institute of Biomedical Engineering, College of Medicine and College of Engineering, National Taiwan University, Taipei 10617, Taiwan; (S.-H.C.); (Z.-Y.C.); (S.-H.C.)
- Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital, Chang Gung University and Medical College, Taoyuan 33305, Taiwan; (Y.-H.L.); (P.-Y.C.)
| | - Pang-Yun Chou
- Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital, Chang Gung University and Medical College, Taoyuan 33305, Taiwan; (Y.-H.L.); (P.-Y.C.)
| | - Huang-Kai Kao
- Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital, Chang Gung University and Medical College, Taoyuan 33305, Taiwan; (Y.-H.L.); (P.-Y.C.)
- Correspondence: (H.-K.K.); (F.-H.L.); Tel.: +886-328-1200 (ext. 3355) (H.-K.K.); +886-928-260-400 (F.-H.L.)
| | - Feng-Huei Lin
- Institute of Biomedical Engineering, College of Medicine and College of Engineering, National Taiwan University, Taipei 10617, Taiwan; (S.-H.C.); (Z.-Y.C.); (S.-H.C.)
- Division of Biomedical Engineering and Nanomedicine Research, National Health Research Institutes, Miaoli 35053, Taiwan
- Correspondence: (H.-K.K.); (F.-H.L.); Tel.: +886-328-1200 (ext. 3355) (H.-K.K.); +886-928-260-400 (F.-H.L.)
| |
Collapse
|
10
|
Appunni S, Rubens M, Ramamoorthy V, Anand V, Khandelwal M, Sharma A. Biglycan: an emerging small leucine-rich proteoglycan (SLRP) marker and its clinicopathological significance. Mol Cell Biochem 2021; 476:3935-3950. [PMID: 34181183 DOI: 10.1007/s11010-021-04216-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 06/23/2021] [Indexed: 12/22/2022]
Abstract
Extracellular matrix (ECM) plays an important role in the structural organization of tissue and delivery of external cues to the cell. Biglycan, a class I small leucine-rich proteoglycans (SLRP), is a key component of the ECM that participates in scaffolding the collagen fibrils and mediates cell signaling. Dysregulation of biglycan expression can result in wide range of clinical conditions such as metabolic disorder, inflammatory disorder, musculoskeletal defects and malignancies. In this review, we aim to update our current understanding regarding the link between altered expression of biglycan and different clinicopathological states. Biglycan interacts with toll like receptors (TLR)-2 and TLR-4 on the immune cells which initiates inflammation and aggravates inflammatory disorders. ECM unbound soluble biglycan acts as a DAMP (danger associated molecular pattern) resulting in sterile inflammation. Dysregulation of biglycan expression is also observed in inflammatory metabolic conditions such as atherosclerosis and obesity. In cancer, high-biglycan expression facilitates tumor growth, invasion and metastasis which is associated with poor clinical outcome. As a pivotal structural component of the ECM, biglycan strengthens the musculoskeletal system and its absence is associated with musculoskeletal defects. Thus, SLRP biglycan is a potential marker which is significantly altered in different clinicopathological states.
Collapse
Affiliation(s)
- Sandeep Appunni
- Department of Biochemistry, All India Institute of Medical Sciences, New Delhi, 110 029, India
- Government Medical College, Kozhikode, Kerala, India
| | | | | | | | - Madhuram Khandelwal
- Department of Biochemistry, All India Institute of Medical Sciences, New Delhi, 110 029, India
| | - Alpana Sharma
- Department of Biochemistry, All India Institute of Medical Sciences, New Delhi, 110 029, India.
| |
Collapse
|
11
|
Kędzierski W, Kowalik S, Mojsym W, Janczarek I, Tkaczyk E. Plasma Activin A and Decorin in Exercised Purebred Arabian Horses - Preliminary Study. J Equine Vet Sci 2021; 102:103638. [PMID: 34119190 DOI: 10.1016/j.jevs.2021.103638] [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: 10/27/2020] [Revised: 04/01/2021] [Accepted: 04/19/2021] [Indexed: 11/29/2022]
Abstract
Development of the musculoskeletal system occurs, in part, through an impact on regulatory proteins, such as activin A and decorin. Activin A induces atrophic effects on skeletal muscle, and decorin regulates the formation of connective tissue proteins like collagen and elastin in tendons and ligaments. The aim of this study was to evaluate the influence of different intensities of exercise on blood plasma activin A and decorin concentrations in horses. Ten young purebred Arabian horses were subjected to routine training sessions on a racetrack, and another 11 adult horses of the same breed participated in endurance rides. Race horses were examined during gallop tests over a distance of 1200 m and endurance horses at distances from 20 to 80 km. Blood samples were collected at rest and after exercise to determine plasma concentrations of activin A, decorin and cortisol. Despite differences in the intensity of exercise, the plasma decorin concentration remained unchanged, and activin A tended to decrease in endurance horses only. The exercise-induced changes in plasma activin A concentrations correlated with the covered distance (r = -0.43; P < .05), but not with the changes in cortisol values. Further studies are needed to confirm the usefulness of plasma activin A as a potential indicator of a horse's endurance performance.
Collapse
Affiliation(s)
- Witold Kędzierski
- Department of Biochemistry, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Lublin, Poland
| | - Sylwester Kowalik
- Department of Animal Physiology, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Lublin, Poland.
| | - Wioleta Mojsym
- Department of Biochemistry, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Lublin, Poland
| | - Iwona Janczarek
- Department of Horse Breeding and Use, Faculty of Animal Science and Bioeconomy, University of Life Sciences in Lublin, Lublin, Poland
| | - Ewelina Tkaczyk
- Department of Horse Breeding and Use, Faculty of Animal Science and Bioeconomy, University of Life Sciences in Lublin, Lublin, Poland
| |
Collapse
|