1,062 results match your criteria ecm integrity


Deciphering the role of cartilage protein 1 in human dermal fibroblasts: a transcriptomic approach.

Funct Integr Genomics 2021 Jul 16;21(3-4):503-511. Epub 2021 Jul 16.

Comparative Endocrinology and Integrative Biology Group (CEIB), Centro de Ciências Do Mar (CCMAR), Universidade Do Algarve, Campus de Gambelas, 8005-139, Faro, Portugal.

Cartilage acidic protein 1A (hCRTAC1-A) is an extracellular matrix protein (ECM) of human hard and soft tissue that is associated with matrix disorders. The central role of fibroblasts in tissue integrity and ECM health made primary human dermal fibroblasts (NHDF) the model for the present study, which aimed to provide new insight into the molecular function of hCRTAC1-A. Specifically, we explored the differential expression patterns of specific genes associated with the presence of hCRTAC1-A by RNA-seq and RT-qPCR analysis. Read More

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Zika virus infection of the placenta alters extracellular matrix proteome.

J Mol Histol 2021 Jul 15. Epub 2021 Jul 15.

Department of Microbiology and Medical Zoology, School of Medicine, University of Puerto Rico Medical Sciences Campus, San Juan, PR, USA.

Zika virus (ZIKV) infection has been associated with fetal abnormalities by compromising placental integrity, but the mechanisms by which this occurs are unknown. Flavivirus can deregulate the host proteome, especially extracellular matrix (ECM) proteins. We hypothesize that a deregulation of specific ECM proteins by ZIKV, affects placental integrity. Read More

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An in vitro investigation to understand the synergistic role of MMPs-1 and 9 on articular cartilage biomechanical properties.

Sci Rep 2021 Jul 13;11(1):14409. Epub 2021 Jul 13.

Department of Mechanical Engineering, University of Louisiana at Lafayette, Lafayette, LA, 70503, USA.

Matrix metalloproteinases (MMPs) play a crucial role in enzymatically digesting cartilage extracellular matrix (ECM) components, resulting in degraded cartilage with altered mechanical loading capacity. Overexpression of MMPs is often caused by trauma, physiologic conditions and by disease. To understand the synergistic impact MMPs have on cartilage biomechanical properties, MMPs from two subfamilies: collagenase (MMP-1) and gelatinase (MMP-9) were investigated in this study. Read More

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Evidence of a Myenteric Plexus Barrier and its Macrophage-Dependent Degradation during Murine Colitis: Implications in Enteric Neuroinflammation.

Cell Mol Gastroenterol Hepatol 2021 Jul 8. Epub 2021 Jul 8.

Department of Anatomy, Histology and Embryology, Faculty of Medicine, Semmelweis University, Budapest, Hungary. Electronic address:

Background And Aims: Neuroinflammation in the gut is associated with many gastrointestinal (GI) diseases, including inflammatory bowel disease. In the brain, neuroinflammatory conditions are associated with blood-brain barrier (BBB) disruption and subsequent neuronal injury. We sought to determine whether the enteric nervous system (ENS) is similarly protected by a physical barrier and whether that barrier is disrupted in colitis. Read More

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Molecular phenotyping and functional assessment of smooth muscle like-cells with pathogenic variants in aneurysm genes ACTA2, MYH11, SMAD3 and FBN1.

Hum Mol Genet 2021 Jul 8. Epub 2021 Jul 8.

Department of Surgery, Institute for Cardiovascular Research, Amsterdam University Medical Centers, location VU University Medical Center, Amsterdam, The Netherlands.

Aortic aneurysms (AA) are pathological dilatations of the aorta. Pathogenic variants in genes encoding for proteins of the contractile machinery of vascular smooth muscle cells (VSMC), genes encoding proteins of the TGFβ signaling pathway, and extracellular matrix (ECM) homeostasis play a role in the weakening of the aortic wall. These variants affect the functioning of VSMC, the predominant cell type in the aorta. Read More

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The impact of biomechanics on corneal endothelium tissue engineering.

Exp Eye Res 2021 Jul 1;209:108690. Epub 2021 Jul 1.

UCL Institute of Ophthalmology, University College London, London, UK.

The integrity of innermost layer of the cornea, the corneal endothelium, is key to sustaining corneal transparency. Therefore, disease or injury causing loss or damage to the corneal endothelial cell population may threaten vision. Transplantation of corneal tissue is the standard treatment used to replace malfunctioning corneal endothelial cells. Read More

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Tissue engineered bovine saphenous vein extracellular matrix scaffolds produced via antigen removal achieve high in vivo patency rates.

Acta Biomater 2021 Jun 27. Epub 2021 Jun 27.

Mayo Clinic, Department of Cardiovascular Diseases, 200 1st St NW, Rochester, MN 55905. Electronic address:

Diseases of small diameter blood vessels encompass the largest portion of cardiovascular diseases, with over 4.2 million people undergoing autologous vascular grafting every year. However, approximately one third of patients are ineligible for autologous vascular grafting due to lack of suitable donor vasculature. Read More

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What causes AIS? Ask the genome!

Authors:
C A Wise

Stud Health Technol Inform 2021 Jun;280:3-8

Center for Pediatric Bone Biology and Translational Research, Scottish Rite for Children, Dallas, TX, USA.

The most common developmental disorder of the spine is scoliosis, a rotated, lateral deformity in the shape of the spinal column. Scoliosis may be part of the clinical spectrum that is observed in many developmental disorders, but typically presents as an isolated symptom in otherwise healthy adolescent children. Adolescent idiopathic scoliosis (AIS) has defied pathogenic understanding in part due to its genetic complexity, and to the lack of well-defined animal models. Read More

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Decellularized kidney extracellular matrix bioinks recapitulate renal 3D microenvironment.

Biofabrication 2021 Jul 26;13(4). Epub 2021 Jul 26.

3B's Research Group, I3Bs-Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal.

Decellularized extracellular matrices (ECMs) are able to provide the necessary and specific cues for remodeling and maturation of tissue-specific cells. Nevertheless, their use for typical biofabrication applications requires chemical modification or mixing with other polymers, mainly due to the limited viscoelastic properties. In this study, we hypothesize that a bioink exclusively based on decellularized kidney ECM (dKECM) could be used to bioprint renal progenitor cells. Read More

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The role of extracellular matrix alterations in mediating astrocyte damage and pericyte dysfunction in Alzheimer's disease: A comprehensive review.

Eur J Neurosci 2021 Jun 28. Epub 2021 Jun 28.

Neuroscience Research Lab, Research Center for Translational Medicine (KUTTAM), Koç University, Istanbul, Turkey.

The brain is a highly vascularized tissue protected by the blood-brain barrier (BBB), a complex structure allowing only necessary substances to pass through into the brain while limiting the entrance of harmful toxins. The BBB comprises several components, and the most prominent features are tight junctions between endothelial cells (ECs), which are further wrapped in a layer of pericytes. Pericytes are multitasked cells embedded in a thick basement membrane (BM) that consists of a fibrous extracellular matrix (ECM) and are surrounded by astrocytic endfeet. Read More

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A functional three-dimensional microphysiological human model of myeloma bone disease.

J Bone Miner Res 2021 Jun 25. Epub 2021 Jun 25.

Department of Biological Sciences, Seton Hall University, South Orange, New Jersey, USA.

Human myeloma bone disease (MBD) occurs when malignant plasma cells migrate to the bone marrow and commence inimical interactions with stromal cells, disrupting the skeletal remodeling process. The myeloma cells simultaneously suppress osteoblastic bone formation while promoting excessive osteoclastic resorption. This bone metabolism imbalance produces osteolytic lesions that cause chronic bone pain and reduce trabecular and cortical bone structural integrity, and often culminate in pathological fractures. Read More

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Regeneration of partially decellularized tracheal scaffolds in a mouse model of orthotopic tracheal replacement.

J Tissue Eng 2021 Jan-Dec;12:20417314211017417. Epub 2021 Jun 6.

Center for Regenerative Medicine, Abigail Wexner Research Institute, Nationwide Children's Hospital, Columbus, OH, USA.

Decellularized tracheal scaffolds offer a potential solution for the repair of long-segment tracheal defects. However, complete decellularization of trachea is complicated by tracheal collapse. We created a partially decellularized tracheal scaffold (DTS) and characterized regeneration in a mouse model of tracheal transplantation. Read More

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Pigmented Full-Thickness Human Skin Model Based on a Fibroblast-Derived Matrix for Long-Term Studies.

Tissue Eng Part C Methods 2021 Jul;27(7):433-443

Biomolecular Diagnostic Laboratory, Instituto de Tecnologia Química e Biológica (ITQB), Universidade Nova de Lisboa (UNL), Oeiras, Portugal.

Reconstructed human skin models are a valuable tool for drug discovery, disease modeling, and basic research. In the past decades, major progress has been made in this field leading to the development of full-thickness skin models (FTSms) better representative of the native human skin by including the cellular cross talk between the dermal and epidermal layers. However, current available FTSms still present important limitations since they are only suitable for short-term studies, include nonhuman extracellular matrix (ECM) components and have a weak skin barrier function compared with human skin. Read More

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Towards an understanding of the mechanoreciprocity process in adipocytes and its perturbation with aging.

Mech Ageing Dev 2021 Jul 18;197:111522. Epub 2021 Jun 18.

Department of Biology, Ecology and Earth Science, University of Calabria, Rende, 87036, Italy.

Adipose tissue (AT) is a complex organ, with multiple functions that are essential for maintaining metabolic health. A feature of AT is its capability to expand in response to physiological challenges, such as pregnancy and aging, and during chronic states of positive energy balance occurring throughout life. AT grows through adipogenesis and/or an increase in the size of existing adipocytes. Read More

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Evolving Up-regulation of Biliary Fibrosis-Related Extracellular Matrix Molecules After Successful Portoenterostomy.

Hepatol Commun 2021 Jun 9;5(6):1036-1050. Epub 2021 Feb 9.

Pediatric Research Center Children's Hospital University of Helsinki and Helsinki University Hospital Helsinki Finland.

Successful portoenterostomy (SPE) improves the short-term outcome of patients with biliary atresia (BA) by relieving cholestasis and extending survival with native liver. Despite SPE, hepatic fibrosis progresses in most patients, leading to cirrhosis and a deterioration of liver function. The goal of this study was to characterize the effects of SPE on the BA liver transcriptome. Read More

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Inhibitory control in neuronal networks relies on the extracellular matrix integrity.

Cell Mol Life Sci 2021 Jul 15;78(14):5647-5663. Epub 2021 Jun 15.

Department of Neurology and Center for Translational Neuro- and Behavioral Sciences (C-TNBS), University Hospital Essen, Hufelandstraße 55, 45122, Essen, Germany.

Inhibitory control is essential for the regulation of neuronal network activity, where excitatory and inhibitory synapses can act synergistically, reciprocally, and antagonistically. Sustained excitation-inhibition (E-I) balance, therefore, relies on the orchestrated adjustment of excitatory and inhibitory synaptic strength. While growing evidence indicates that the brain's extracellular matrix (ECM) is a crucial regulator of excitatory synapse plasticity, it remains unclear whether and how the ECM contributes to inhibitory control in neuronal networks. Read More

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Fast protocol for the processing of split-thickness skin into decellularized human dermal matrix.

Tissue Cell 2021 Jun 4;72:101572. Epub 2021 Jun 4.

Barcelona Tissue Bank, Banc de Sang i Teixits (BST), Barcelona, Spain; Biomedical Research Institute (IIB-Sant Pau; SGR1113), Barcelona, Spain.

Background: Dermal scaffolds for tissue regeneration are nowadays an effective alternative in not only wound healing surgeries but also breast reconstruction, abdominal wall reconstruction and tendon reinforcement. The present study describes the development of a decellularization protocol applied to human split-thickness skin from cadaveric donors to obtain dermal matrix using an easy and quick procedure.

Methods: Complete split-thickness donor was decellularized through the combination of hypertonic and enzymatic methods. Read More

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Whole blood transfusion improves vascular integrity and increases survival in artemether-treated experimental cerebral malaria.

Sci Rep 2021 Jun 8;11(1):12077. Epub 2021 Jun 8.

Laboratory of Malaria Research, Oswaldo Cruz Institute, Fiocruz, Av. Brasil 4365, Manguinhos, Rio de Janeiro, 21040-360, Brazil.

Pathological features observed in both human and experimental cerebral malaria (ECM) are endothelial dysfunction and changes in blood components. Blood transfusion has been routinely used in patients with severe malarial anemia and can also benefit comatose and acidotic malaria patients. In the present study Plasmodium berghei-infected mice were transfused intraperitoneally with 200 μL of whole blood along with 20 mg/kg of artemether. Read More

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Decellularized xenogenic cartilage extracellular matrix (ECM) scaffolds for the reconstruction of osteochondral defects in rabbits.

J Mater Chem B 2021 Jun;9(24):4873-4894

School of Bioscience and Engineering, Jadavpur University, Kolkata, India.

The use of decellularized native allogenic or xenogenic cartilaginous extracellular matrix (ECM) biomaterials is widely expanding in the fields of tissue engineering and regenerative medicine. In this study, we aimed to develop an acellular, affordable, biodegradable, easily available goat conchal cartilaginous ECM derived scaffolding biomaterial for repair and regeneration of osteochondral defects in rabbits. Cartilages harvested from freshly collected goat ears were decellularized using chemical agents, namely, hypotonic-hypertonic (HH) buffer and Triton X-100 solution, separately. Read More

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From the Matrix to the Nucleus and Back: Mechanobiology in the Light of Health, Pathologies, and Regeneration of Oral Periodontal Tissues.

Biomolecules 2021 May 31;11(6). Epub 2021 May 31.

Center for Dental Medicine, Division of Oral Biotechnology, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetterstr. 55, 79106 Freiburg, Germany.

Among oral tissues, the periodontium is permanently subjected to mechanical forces resulting from chewing, mastication, or orthodontic appliances. Molecularly, these movements induce a series of subsequent signaling processes, which are embedded in the biological concept of cellular mechanotransduction (MT). Cell and tissue structures, ranging from the extracellular matrix (ECM) to the plasma membrane, the cytosol and the nucleus, are involved in MT. Read More

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Role of Fibulins in Embryonic Stage Development and Their Involvement in Various Diseases.

Biomolecules 2021 May 2;11(5). Epub 2021 May 2.

Department of Biotechnology, School of Bioengineering and Biosciences, Lovely Professional University, Phagwara, Punjab 144411, India.

The extracellular matrix (ECM) plays an important role in the evolution of early metazoans, as it provides structural and biochemical support to the surrounding cells through the cell-cell and cell-matrix interactions. In multi-cellular organisms, ECM plays a pivotal role in the differentiation of tissues and in the development of organs. Fibulins are ECM glycoproteins, found in a variety of tissues associated with basement membranes, elastic fibers, proteoglycan aggregates, and fibronectin microfibrils. Read More

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Decellularized dermis extracellular matrix alloderm mechanically strengthens biological engineered tunica adventitia-based blood vessels.

Sci Rep 2021 May 31;11(1):11384. Epub 2021 May 31.

Department of Biomedical Engineering, Wayne State University, 818 W. Hancock Street, Detroit, MI, 48201, USA.

The ideal engineered vascular graft would utilize human-derived materials to minimize foreign body response and tissue rejection. Current biological engineered blood vessels (BEBVs) inherently lack the structure required for implantation. We hypothesized that an ECM material would provide the structure needed. Read More

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A hierarchical scaffold with a highly pore-interconnective 3D printed PLGA/n-HA framework and an extracellular matrix like gelatin network filler for bone regeneration.

J Mater Chem B 2021 Jun;9(22):4488-4501

Research Center for Nano-Biomaterials, Analytical & Testing Center, Sichuan University, Chengdu 610064, China.

The ideal scaffold for bone repair should have a hierarchical pore structure and gradient degradation performance to satisfy the uniform adhesion and proliferation of cells in the scaffold at the early stage of implantation, as well as providing space for the subsequent regeneration of bone tissue. To this end, we developed a hierarchical polylactic acid glycolic acid copolymer (PLGA)/nano-hydroxyapatite (n-HA)/gelatin (Gel) (PHG) scaffold with a printed PLGA/n-HA (PH) framework and a Gel network filler for bone regeneration by the combination of 3D printing and freeze-drying technologies. The fabricated PHG scaffold features large front hole size (>1100 μm × 1100 μm) and side hole size (>500 μm) to provide sufficient open space and reliable integrated support for cell and tissue ingrowth. Read More

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Quantitative Evaluation of Osteocyte Morphology and Bone Anisotropic Extracellular Matrix in Rat Femur.

Calcif Tissue Int 2021 May 19. Epub 2021 May 19.

Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamada-Oka, Suita, Osaka, 565-0871, Japan.

Osteocytes are believed to play a crucial role in mechanosensation and mechanotransduction which are important for maintenance of mechanical integrity of bone. Recent investigations have revealed that the preferential orientation of bone extracellular matrix (ECM) mainly composed of collagen fibers and apatite crystallites is one of the important determinants of bone mechanical integrity. However, the relationship between osteocytes and ECM orientation remains unclear. Read More

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MRCK: a master regulator of tissue remodeling or another 'ROCK' in the epithelial block?

Authors:
Ceniz Zihni

Tissue Barriers 2021 May 19:1916380. Epub 2021 May 19.

UCL Institute of Ophthalmology, Department of Cell Biology, University College London, London, UK.

The epithelium forms a smart barrier to the external environment that can remodel whilst maintaining tissue integrity, a feature important for development, homeostasis, and function. Its dysregulation can lead to diseases ranging from cancer to vision loss. Epithelial remodeling requires reorganization of a thin sheet of actomyosin cortex under the plasma membrane of polarized cells that form basolateral contacts with neighboring cells and the extracellular matrix (ECM). Read More

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Extracellular Vesicles: An Emerging Mechanism Governing the Secretion and Biological Roles of Tenascin-C.

Front Immunol 2021 26;12:671485. Epub 2021 Apr 26.

Mechanoadaptation and Caveolae Biology Lab, Area of Cell and Developmental Biology, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain.

ECM composition and architecture are tightly regulated for tissue homeostasis. Different disorders have been associated to alterations in the levels of proteins such as collagens, fibronectin (FN) or tenascin-C (TnC). TnC emerges as a key regulator of multiple inflammatory processes, both during physiological tissue repair as well as pathological conditions ranging from tumor progression to cardiovascular disease. Read More

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Extracellular Matrix Alignment Directs Provisional Matrix Assembly and Three Dimensional Fibrous Tissue Closure.

Tissue Eng Part A 2021 May 12. Epub 2021 May 12.

Department of Biomedical Engineering, Boston University, Boston, Massachusetts, USA.

Gap closure is a dynamic process in wound healing, in which a wound contracts and a provisional matrix is laid down, to restore structural integrity to injured tissues. The efficiency of wound closure has been found to depend on the shape of a wound, and this shape dependence has been echoed in various studies. While wound shape itself appears to contribute to this effect, it remains unclear whether the alignment of the surrounding extracellular matrix (ECM) may also contribute. Read More

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Dichotomy in Growth and Invasion from Low- to High-Grade Glioma Cellular Variants.

Cell Mol Neurobiol 2021 May 12. Epub 2021 May 12.

Immunobiology Laboratory, Department of Zoology, Panihati Mahavidyalaya, Kolkata, West Bengal, India.

Glial dysfunction outraging CNS plasticity and integrity results in one of the most dangerous cancers, namely glioma, featuring little median survival period and high recurrence. The hallmark properties of proliferation, invasion and angiogenesis with the infiltrated macrophages in glioma are expected to be tightly coupled or cross-linked, but not properly related so far. The present study is aimed to find a relationship between this featured quadrangle from lower to higher grades (HG) of post-operative glioma tissues and their invading subsets. Read More

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Pulsed Electromagnetic Field Stimulation of Bone Healing and Joint Preservation: Cellular Mechanisms of Skeletal Response.

J Am Acad Orthop Surg Glob Res Rev 2020 05;4(5):e1900155

From the IGEA, Clinical Biophysics, Carpi, Italy (Dr. Cadossi), the Department of Biomedical and Specialty Surgical Sciences, Azienda Ospedaliero-Universitaria di Ferrara, Arcispedale Sant'Anna, University of Ferrara, Ferrara, Italy (Dr. Massari), and the Department of Orthopaedics, Warren Alpert Medical School, Brown University, Providence, RI (Ms. Racine-Avila and Dr. Aaron).

The US FDA has approved pulsed electromagnetic fields (PEMFs) as a safe and effective treatment for nonunions of bone. Despite its clinical use, the mechanisms of action of electromagnetic stimulation of the skeleton have been elusive. Recently, cell membrane receptors have been identified as the site of action of PEMF and provide a mechanistic rationale for clinical use. Read More

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The extracellular matrix protein agrin is essential for epicardial epithelial-to-mesenchymal transition during heart development.

Development 2021 May 10;148(9). Epub 2021 May 10.

Burdon-Sanderson Cardiac Science Centre, Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford OX1 3PT, UK.

During heart development, epicardial cells residing within the outer layer undergo epithelial-mesenchymal transition (EMT) and migrate into the underlying myocardium to support organ growth and morphogenesis. Disruption of epicardial EMT results in embryonic lethality, yet its regulation is poorly understood. Here, we report epicardial EMT within the mesothelial layer of the mouse embryonic heart at ultra-high resolution using scanning electron microscopy combined with immunofluorescence analyses. Read More

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