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Topic:Extracellular matrix

The extracellular matrix (ECM) in horses is a complex network of proteins and polysaccharides that provides structural and biochemical support to surrounding cells. It is a dynamic entity involved in various physiological processes, including tissue repair, development, and homeostasis. In equine biology, the ECM is composed of components such as collagen, elastin, proteoglycans, and glycoproteins, which contribute to the integrity and functionality of tissues like cartilage, tendons, and skin. Alterations in the ECM can influence cellular behavior and are associated with conditions such as osteoarthritis and tendon injuries. This page aggregates peer-reviewed research studies and scholarly articles that explore the composition, function, and implications of the extracellular matrix in equine health and disease.
Dwarfism with joint laxity in Friesian horses is associated with a splice site mutation in B4GALT7.
BMC genomics    October 28, 2016   Volume 17, Issue 1 839 doi: 10.1186/s12864-016-3186-0
Leegwater PA, Vos-Loohuis M, Ducro BJ, Boegheim IJ, van Steenbeek FG, Nijman IJ, Monroe GR, Bastiaansen JW, Dibbits BW, van de Goor LH, Hellinga I....Inbreeding and population bottlenecks in the ancestry of Friesian horses has led to health issues such as dwarfism. The limbs of dwarfs are short and the ribs are protruding inwards at the costochondral junction, while the head and back appear normal. A striking feature of the condition is the flexor tendon laxity that leads to hyperextension of the fetlock joints. The growth plates of dwarfs display disorganized and thickened chondrocyte columns. The aim of this study was to identify the gene defect that causes the recessively inherited trait in Friesian horses to understand the disease proce...
Identification of the most abundant proteins in equine amniotic fluid by a proteomic approach.
Animal reproduction science    October 11, 2016   Volume 174 150-160 doi: 10.1016/j.anireprosci.2016.10.003
Isani G, Ferlizza E, Cuoghi A, Bellei E, Monari E, Bianchin Butina B, Castagnetti C.Characterisation of the physiologic equine amniotic fluid (AF) proteome is a prerequisite to study its changes during diseases and discover new biomarkers. The aim of this study was to identify by a proteomic approach the most abundant proteins of equine AF. AF samples were collected at parturition from 24 healthy mares that delivered healthy foals. All samples were subjected to sodium dodecyl sulphate polyacrylamide gel electrophoresis (SDS-PAGE) on 4-12% gels. A pool of the 24 samples, after SDS-PAGE, was cut in 25 slices, trypsin-digested and analysed by mass spectrometry (MS) for protein i...
Exposure of a tendon extracellular matrix to synovial fluid triggers endogenous and engrafted cell death: A mechanism for failed healing of intrathecal tendon injuries.
Connective tissue research    October 11, 2016   Volume 58, Issue 5 438-446 doi: 10.1080/03008207.2016.1245726
Garvican ER, Salavati M, Smith RKW, Dudhia J.The purpose of this study was to investigate the effect of normal synovial fluid (SF) on exposed endogenous tendon-derived cells (TDCs) and engrafted mesenchymal stem cells (MSCs) within the tendon extracellular matrix. Methods: Explants from equine superficial digital flexor (extra-synovial) and deep digital flexor tendons (DDFTs) from the compressed, intra-synovial and the tensile, extra-synovial regions were cultured in allogeneic or autologous SF-media. Human hamstring explants were cultured in allogeneic SF. Explant viability was assessed by staining. Proliferation of equine monolayer MSC...
Induction of Tenogenic Differentiation Mediated by Extracellular Tendon Matrix and Short-Term Cyclic Stretching.
Stem cells international    August 18, 2016   Volume 2016 7342379 doi: 10.1155/2016/7342379
Burk J, Plenge A, Brehm W, Heller S, Pfeiffer B, Kasper C.Tendon and ligament pathologies are still a therapeutic challenge, due to the difficulty in restoring the complex extracellular matrix architecture and biomechanical strength. While progress is being made in cell-based therapies and tissue engineering approaches, comprehensive understanding of the fate of progenitor cells in tendon healing is still lacking. The aim of this study was to investigate the effect of decellularized tendon matrix and moderate cyclic stretching as natural stimuli which could potentially direct tenogenic fate. Equine adipose-derived mesenchymal stromal cells (MSC) were...
Development of a novel ex vivo equine corneal model.
Veterinary ophthalmology    July 29, 2016   Volume 20, Issue 4 288-293 doi: 10.1111/vop.12415
Marlo TL, Giuliano EA, Sharma A, Mohan RR.To develop an ex vivo equine corneal organ culture model. Specifically, to assess the equine cornea's extracellular matrix and cellularity after 7 days using two different culture techniques: either (i) immersion system or (ii) air/liquid interface system, to determine the best ex vivo equine corneal model. Methods: Fourteen healthy equine corneas of various breeds. Methods: Equine corneas with 2 mm of perilimbal sclera were freshly harvested from 7 horses undergoing humane euthanasia. One corneal-scleral ring (CSR) from each horse was randomly placed in the (i) immersion condition organ cultu...
Chondroitin sulphate glycosaminoglycans contribute to widespread inferior biomechanics in tendon after focal injury.
Journal of biomechanics    June 6, 2016   Volume 49, Issue 13 2694-2701 doi: 10.1016/j.jbiomech.2016.06.006
Choi RK, Smith MM, Martin JH, Clarke JL, Dart AJ, Little CB, Clarke EC.Both mechanical and structural properties of tendon change after injury however the causal relationship between these properties is presently unclear. This study aimed to determine the extent of biomechanical change in post-injury tendon pathology and whether the sulphated glycosaminoglycans (glycosaminoglycans) present are a causal factor in these changes. Equine superficial digital flexor tendons (SDF tendons) were surgically-injured in vivo (n=6 injured, n=6 control). Six weeks later they were harvested and regionally dissected into twelve regions around the lesion (equal medial/lateral, pr...
Distribution of proteins within different compartments of tendon varies according to tendon type.
Journal of anatomy    April 25, 2016   Volume 229, Issue 3 450-458 doi: 10.1111/joa.12485
Thorpe CT, Karunaseelan KJ, Ng Chieng Hin J, Riley GP, Birch HL, Clegg PD, Screen HR.Although the predominant function of all tendons is to transfer force from muscle to bone and position the limbs, some tendons additionally function as energy stores, reducing the energetic cost of locomotion. To maximise energy storage and return, energy-storing tendons need to be more extensible and elastic than tendons with a purely positional function. These properties are conferred in part by a specialisation of a specific compartment of the tendon, the interfascicular matrix, which enables sliding and recoil between adjacent fascicles. However, the composition of the interfascicular matr...
Effects of Dexamethasone Concentration and Timing of Exposure on Chondrogenesis of Equine Bone Marrow-Derived Mesenchymal Stem Cells.
Cartilage    March 10, 2016   Volume 7, Issue 1 92-103 doi: 10.1177/1947603515595263
Tangtrongsup S, Kisiday JD.Dexamethasone is known to support mesenchymal stem cell (MSC) chondrogenesis, although the effects of dose and timing of exposure are not well understood. The objective of this study was to investigate these variables using a laboratory model of MSC chondrogenesis. Methods: Equine MSCs were encapsulated in agarose and cultured in chondrogenic medium with 1 or 100 nM dexamethasone, or without dexamethasone, for 15 days. Samples were analyzed for extracellular matrix (ECM) accumulation, prostaglandin E2 and alkaline phosphatase secretion, and gene expression of selected collagens and catabolic e...
Anatomical heterogeneity of tendon: Fascicular and interfascicular tendon compartments have distinct proteomic composition.
Scientific reports    February 4, 2016   Volume 6 20455 doi: 10.1038/srep20455
Thorpe CT, Peffers MJ, Simpson D, Halliwell E, Screen HR, Clegg PD.Tendon is a simple aligned fibre composite, consisting of collagen-rich fascicles surrounded by a softer interfascicular matrix (IFM). The composition and interactions between these material phases are fundamental in ensuring tissue mechanics meet functional requirements. However the IFM is poorly defined, therefore tendon structure-function relationships are incompletely understood. We hypothesised that the IFM has a more complex proteome, with faster turnover than the fascicular matrix (FM). Using laser-capture microdissection and mass spectrometry, we demonstrate that the IFM contains more ...
Extracellular matrix remodeling in equine sarcoid: an immunohistochemical and molecular study.
BMC veterinary research    February 2, 2016   Volume 12 24 doi: 10.1186/s12917-016-0648-1
Martano M, Corteggio A, Restucci B, De Biase ME, Borzacchiello G, Maiolino P.Equine sarcoids are locally invasive, fibroblastic benign skin tumors. Bovine papillomavirus type-1 (BPV-1) and/or Bovine papillomavirus type-2 (BPV-2) are believed to be the causative agent of sarcoids, although the mechanisms by which the virus induce the tumor are still poorly understood. We hypothesized that in genetically predisposed equines latent BPV infection may be reactivated by immunosoppression and/or mechanical injury leading to a form of pathologic wound which may transform into a sarcoid. In this study, we investigated in 25 equine sarcoids and in five normal skin samples the hi...
Equine Infectious Anemia Virus Gag Assembly and Export Are Directed by Matrix Protein through trans-Golgi Networks and Cellular Vesicles.
Journal of virology    December 4, 2015   Volume 90, Issue 4 1824-1838 doi: 10.1128/JVI.02814-15
Zhang Z, Ma J, Zhang X, Su C, Yao QC, Wang X.Gag intracellular assembly and export are very important processes for lentiviruses replication. Previous studies have demonstrated that equine infectious anemia virus (EIAV) matrix (MA) possesses distinct phosphoinositide affinity compared with HIV-1 MA and that phosphoinositide-mediated targeting to peripheral and internal membranes is a critical factor in EIAV assembly and release. In this study, we compared the cellular assembly sites of EIAV and HIV-1. We observed that the assembly of EIAV particles occurred on interior cellular membranes, while HIV-1 was targeted to the plasma membrane (...
Differences in extracellular matrix remodeling in the placenta of mares that retain fetal membranes and mares that deliver fetal membranes physiologically.
Placenta    August 7, 2015   Volume 36, Issue 10 1167-1177 doi: 10.1016/j.placenta.2015.07.126
Rapacz-Leonard A, Kankofer M, Leonard M, Wawrzykowski J, Dąbrowska M, Raś A, Paździor-Czapula K, Janowski T.In mammals, placenta separation at term may involve degradation of the extracellular matrix by matrix metalloproteinases (MMPs). The activity of MMPs is modulated by TIMPs. We hypothesized that the placentas of mares that deliver fetal membranes physiologically and those that retain fetal membranes (FMR) differ in terms of histology; mRNA expression of MMP-2 and MMP-9; protein expression of MMP-2, MMP-9, and TIMP-2; and the potential activity of both MMPs. Methods: Placenta biopsies were taken from mares (n = 9; 4 FMR, 5 controls) immediately after foal expulsion. Retention was defined as fail...
Optimization and validation method to evaluate the residues of β-lactams and tetracyclines in kidney tissue by UPLC-MS/MS.
Talanta    July 17, 2015   Volume 144 922-932 doi: 10.1016/j.talanta.2015.07.048
de Almeida MP, Rezende CP, Ferreira FD, de Souza LF, de Assis DC, de Figueiredo TC, de Oliveira Leite M, de Vasconcelos Cançado S.Methods are validated by a process that defines the analytical requirements and confirms that the investigated method is capable of performing consistently. A quantitative and confirmatory method for determining the presence of β-lactam and tetracycline multiresidues in avian, bovine, equine, and swine kidney tissues using ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) was developed, optimized, and validated. Analytes were extracted from the kidneys by a mixture of water and acetonitrile, and the extract was then purified with hexane and C18 (dispersive phase). ...
Characterization of neopeptides in equine articular cartilage degradation.
Journal of orthopaedic research : official publication of the Orthopaedic Research Society    July 7, 2015   Volume 34, Issue 1 106-120 doi: 10.1002/jor.22963
Peffers MJ, Thornton DJ, Clegg PD.Osteoarthritis is characterized by a loss of extracellular matrix that leads to cartilage degradation and joint space narrowing. Specific proteases, including the aggrecanases ADAMTS-4 and matrix metalloproteinase 3, are important in initiating and promoting cartilage degradation in osteoarthritis. This study investigated protease-specific and disease-specific cleavage patterns of particular extracellular matrix proteins by comparing new peptide fragments, neopeptides, in specific exogenous protease-driven digestion of a crude cartilage proteoglycan extract and an in-vitro model of early osteo...
What quantitative mechanical loading stimulates in vitro cultivation best?
Journal of experimental orthopaedics    June 19, 2015   Volume 2, Issue 1 15 doi: 10.1186/s40634-015-0029-x
Natenstedt J, Kok AC, Dankelman J, Tuijthof GJ.Articular cartilage has limited regeneration capacities. One of the factors that appear to affect the in vitro cultivation of articular cartilage is mechanical stimulation. So far, no combination of parameters has been identified that offers the best results. The goal is to review the literature in search of the best available set of quantitative mechanical stimuli that lead to optimal in vitro cultivation.The databases Scopus and PubMed were used to survey the literature, and strict in- and exclusion criteria were applied regarding the presence of quantitative data. The review was performed b...
Immunomodulatory Role of Adipose-Derived Stem Cells on Equine Endometriosis.
BioMed research international    June 9, 2015   Volume 2015 141485 doi: 10.1155/2015/141485
Falomo ME, Ferroni L, Tocco I, Gardin C, Zavan B.Endometriosis is a degenerative process due to a chronic inflammatory damage leading to extracellular matrix components deposition and glandular fibrosis. It is known that mesenchymal stem cells secrete a wide range of bioactive molecules, some of them modulating the immune inflammatory response, and others providing regeneration and remodeling of injured tissue. We have performed in vitro experiments in order to analyze the capability of allogenic equine adipose-derived stem cells (ADSCs) to infiltrate mares' endometrial tissues and to stimulate the expression of cytokines and metallopeptidas...
Ageing does not result in a decline in cell synthetic activity in an injury prone tendon.
Scandinavian journal of medicine & science in sports    June 9, 2015   Volume 26, Issue 6 684-693 doi: 10.1111/sms.12500
Thorpe CT, McDermott BT, Goodship AE, Clegg PD, Birch HL.Advancing age is a well-known risk factor for tendon disease. Energy-storing tendons [e.g., human Achilles, equine superficial digital flexor tendon (SDFT)] are particularly vulnerable and it is thought that injury occurs following an accumulation of micro-damage in the extracellular matrix (ECM). Several authors suggest that age-related micro-damage accumulates due to a failure of the aging cell population to maintain the ECM or an imbalance between anabolic and catabolic pathways. We hypothesized that ageing results in a decreased ability of tendon cells to synthesize matrix components and m...
An inflammatory equine model demonstrates dynamic changes of immune response and cartilage matrix molecule degradation in vitro.
Connective tissue research    April 22, 2015   Volume 56, Issue 4 315-325 doi: 10.3109/03008207.2015.1027340
Svala E, Löfgren M, Sihlbom C, Rüetschi U, Lindahl A, Ekman S, Skiöldebrand E.The molecular aspects of inflammation were investigated in equine articular cartilage explants using quantitative proteomics. Articular cartilage explants were stimulated with interleukin (IL)-1β in vitro for 25 days, and proteins released into cell culture media were chemically labeled with isobaric mass tags and analyzed by liquid chromatography-tandem mass spectrometry. A total of 127 proteins were identified and quantified in media from explants. IL-1β-stimulation resulted in an abundance of proteins related to inflammation, including matrix metalloproteinases, acute phase proteins, comp...
Focal experimental injury leads to widespread gene expression and histologic changes in equine flexor tendons.
PloS one    April 2, 2015   Volume 10, Issue 4 e0122220 doi: 10.1371/journal.pone.0122220
Jacobson E, Dart AJ, Mondori T, Horadogoda N, Jeffcott LB, Little CB, Smith MM.It is not known how extensively a localised flexor tendon injury affects the entire tendon. This study examined the extent of and relationship between histopathologic and gene expression changes in equine superficial digital flexor tendon after a surgical injury. One forelimb tendon was hemi-transected in six horses, and in three other horses, one tendon underwent a sham operation. After euthanasia at six weeks, transected and control (sham and non-operated contralateral) tendons were regionally sampled (medial and lateral halves each divided into six 3 cm regions) for histologic (scoring and ...
Crosslinkable hydrogels derived from cartilage, meniscus, and tendon tissue.
Tissue engineering. Part A    February 9, 2015   Volume 21, Issue 7-8 1195-1206 doi: 10.1089/ten.TEA.2014.0362
Visser J, Levett PA, te Moller NC, Besems J, Boere KW, van Rijen MH, de Grauw JC, Dhert WJ, van Weeren PR, Malda J.Decellularized tissues have proven to be versatile matrices for the engineering of tissues and organs. These matrices usually consist of collagens, matrix-specific proteins, and a set of largely undefined growth factors and signaling molecules. Although several decellularized tissues have found their way to clinical applications, their use in the engineering of cartilage tissue has only been explored to a limited extent. We set out to generate hydrogels from several tissue-derived matrices, as hydrogels are the current preferred cell carriers for cartilage repair. Equine cartilage, meniscus, a...
Suspensory ligament degeneration associated with pituitary pars intermedia dysfunction in horses.
Veterinary journal (London, England : 1997)    January 6, 2015   Volume 203, Issue 3 348-350 doi: 10.1016/j.tvjl.2014.12.037
Hofberger S, Gauff F, Licka T.In older horses, pituitary pars intermedia dysfunction (PPID) and suspensory ligament (SL) degeneration are common. The aim of the present study was to identify histopathological changes in the SL in horses with PPID. SLs of four horses with clinical signs of PPID (17-26 years of age) were compared with SLs from four old horses (18-31 years of age) and three young horses (4-9 years of age). In horses with PPID, there was reduced longitudinal arrangement of collagen fibres in SLs, along with inclusions of cartilage, extracellular matrix and haemorrhage, as well as significant proteoglycan accum...
Porcine urinary bladder extracellular matrix grafts (ACell Vet® Corneal Discs) for keratomalacia in 17 equids (2012-2013).
Veterinary ophthalmology    November 27, 2014   Volume 19, Issue 1 3-10 doi: 10.1111/vop.12240
Mancuso LA, Lassaline M, Scherrer NM.To describe the clinical course, outcomes, and complications associated with use of commercially available porcine urinary bladder extracellular matrix (ECM) grafts (ACell Vet(®) Corneal Discs) in equid patients with keratomalacia, and to evaluate the efficacy of ECM grafts as a viable alternative to other biomaterials for corneal grafting in equid patients. Methods: Sixteen horses and one donkey (17 eyes) with unilateral keratomalacia severe enough to warrant surgical repair between August 2012 and September 2013. Methods: Retrospective medical record review to identify equid patients meetin...
Horse adipose-derived mesenchymal stromal cells constitutively produce membrane vesicles: a morphological study.
Histology and histopathology    November 24, 2014   Volume 30, Issue 5 549-557 doi: 10.14670/HH-30.549
Mesenchymal stromal cells (MSCs) are multipotent somatic cells that can differentiate into a variety of mature cell types. Over recent years, their biological in vitro and in vivo properties have elicited great expectations in the field of regenerative medicine, immunotherapy and tumour treatment. An increasing number of experimental observations suggest that their biological effects are probably related to a paracrine mechanism via the release of trophic factors and cytokines as well as through the production of membrane vesicles (MVs). These are nanometric membrane-bound structures, comprisi...
Andrographolide Exerts Chondroprotective Activity in Equine Cartilage Explant and Suppresses Interleukin-1 β -Induced MMP-2 Expression in Equine Chondrocyte Culture.
International scholarly research notices    October 29, 2014   Volume 2014 464136 doi: 10.1155/2014/464136
Tangyuenyong S, Viriyakhasem N, Peansukmanee S, Kongtawelert P, Ongchai S.Cartilage erosion in degenerative joint diseases leads to lameness in affected horses. It has been reported that andrographolide from Andrographis paniculata inhibited cartilage matrix-degrading enzymes. This study aimed to explore whether this compound protects equine cartilage degradation in the explant culture model and to determine its effect on matrix metalloproteinase-2 (MMP-2) expression, a matrix-degrading enzyme, in equine chondrocyte culture. Equine articular cartilage explant culture was induced by 25 ng/mL interleukin-1β, a key inducer of cartilage degeneration, in cultures with...
Cell and matrix modulation in prenatal and postnatal equine growth cartilage, zones of Ranvier and articular cartilage.
Journal of anatomy    September 1, 2014   Volume 225, Issue 5 548-568 doi: 10.1111/joa.12232
Löfgren M, Ekman S, Svala E, Lindahl A, Ley C, Skiöldebrand E.Formation of synovial joints includes phenotypic changes of the chondrocytes and the organisation of their extracellular matrix is regulated by different factors and signalling pathways. Increased knowledge of the normal processes involved in joint development may be used to identify similar regulatory mechanisms during pathological conditions in the joint. Samples of the distal radius were collected from prenatal and postnatal equine growth plates, zones of Ranvier and articular cartilage with the aim of identifying Notch signalling components and cells with stem cell-like characteristics and...
Equine sarcoid: In situ demonstration of matrix metalloproteinase expression.
Veterinary journal (London, England : 1997)    August 28, 2014   Volume 202, Issue 2 279-285 doi: 10.1016/j.tvjl.2014.07.026
Mosseri S, Hetzel U, Hahn S, Michaloupoulou E, Sallabank HC, Knottenbelt DC, Kipar A.Sarcoids are the most prevalent equine skin tumours and remain a therapeutic challenge due to their differing clinical morphology, local aggressive behaviour, and high recurrence following surgical treatment. In vitro, sarcoid derived fibroblasts are invasive and express matrix metalloproteinase (MMP) -1, -2 and -9. It was hypothesised that the MMPs produced by neoplastic cells play a role in both their local invasiveness and interaction with the overlying epidermis (picket fence formation). The objective of this morphological study was to investigate the local behaviour and in situ MMP expres...
Immunogenicity of intensively decellularized equine carotid arteries is conferred by the extracellular matrix protein collagen type VI.
PloS one    August 26, 2014   Volume 9, Issue 8 e105964 doi: 10.1371/journal.pone.0105964
Boeer U, Buettner FF, Klingenberg M, Antonopoulos GC, Meyer H, Haverich A, Wilhelmi M.The limited biocompatibility of decellularized scaffolds is an ongoing challenge in tissue engineering. Here, we demonstrate the residual immunogenicity of an extensively decellularized equine carotid artery (dEAC(intens)) and identify the involved immunogenic components. EAC were submitted to an elaborated intensified decellularization protocol with SDS/sodium desoxycholate for 72 h using increased processing volumes (dEAC(intens)), and compared to dEAC(ord) prepared by an ordinary protocol (40 h, normal volumes). Matrix integrity was checked via correlative volumetric visualization which rev...
Multipotency of equine mesenchymal stem cells derived from synovial fluid.
Veterinary journal (London, England : 1997)    August 4, 2014   Volume 202, Issue 1 53-61 doi: 10.1016/j.tvjl.2014.07.029
Murata D, Miyakoshi D, Hatazoe T, Miura N, Tokunaga S, Fujiki M, Nakayama K, Misumi K.Cartilage regeneration with cell therapy following arthroscopic surgery could be used in racehorses with intra-articular fractures (IAF) and osteochondritis dissecans (OCD). The aims of this study were to investigate the origin and multipotency of stromal cells in the synovial fluid (SF) of horses with intra-articular injury and synovitis, and to provide a new strategy for regeneration of lost articular cartilage. Mesenchymal stromal cells were isolated from SF of horses with IAF and OCD. Multipotency was analysed by RT-PCR for specific mRNAs and staining for production of specific extracellul...
Gene expression of matrix metalloproteinases and LH receptors in mare follicular development.
Theriogenology    August 1, 2014   Volume 82, Issue 8 1131-1136 doi: 10.1016/j.theriogenology.2014.07.033
Bastos HB, Kretzmann NA, Santos GO, Esmeraldino AT, Rechsteiner SF, Mattos RC, Neves AP.The period from the emergence of a dominant follicle until its formation requires tissue remodeling. Enzymes promoting collagen lysis, such as matrix metalloproteinases (MMPs), are fundamental for the process of extracellular matrix remodeling, which allows changes in ovarian tissue architecture during follicular growth. It has been suggested that the production of these enzymes may be affected by the rise in circulating concentrations of LH, which acts on the ovarian surface epithelium (OSE). The aim of this study was to determine the expression of MMP-1, MMP-2, and LH receptor (LHR) in the o...
Proteomic analysis reveals age-related changes in tendon matrix composition, with age- and injury-specific matrix fragmentation.
The Journal of biological chemistry    July 30, 2014   Volume 289, Issue 37 25867-25878 doi: 10.1074/jbc.M114.566554
Peffers MJ, Thorpe CT, Collins JA, Eong R, Wei TK, Screen HR, Clegg PD.Energy storing tendons, such as the human Achilles and equine superficial digital flexor tendon (SDFT), are highly prone to injury, the incidence of which increases with aging. The cellular and molecular mechanisms that result in increased injury in aged tendons are not well established but are thought to result in altered matrix turnover. However, little attempt has been made to fully characterize the tendon proteome nor determine how the abundance of specific tendon proteins changes with aging and/or injury. The aim of this study was, therefore, to assess the protein profile of normal SDFTs ...
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