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collagen induction therapy

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https://www.readbyqxmd.com/read/29761584/reduction-of-fibrosis-and-scar-formation-by-partial-reprogramming-in-vivo
#1
Markus C Doeser, Hans R Schöler, Guangming Wu
Transient expression of the transcription factors OCT4, SOX2, KLF4 and C-MYC (OSKM) to induce partial reprogramming while avoiding the pluripotent state and teratoma formation has recently been discussed as a strategy for regenerating damaged tissues in vivo, whereby the impact of partial reprogramming on tissue repair remains to be elucidated. Here, we activated OSKM transcription factors in cutaneous wounds of OSKM-inducible transgenic mice and found that induction of OSKM factors in excisional wounds caused a diminished fibroblast transdifferentiation to myofibroblasts and wound contraction...
May 15, 2018: Stem Cells
https://www.readbyqxmd.com/read/29757956/osteogenic-differentiation-modulates-the-cytokine-chemokine-and-growth-factor-profile-of-ascs-and-shed
#2
Federico Mussano, Tullio Genova, Sara Petrillo, Ilaria Roato, Riccardo Ferracini, Luca Munaron
Great efforts have been made to improve bone regeneration techniques owing to a growing variety of sources of stem cells suitable for autologous transplants. Specifically, adipose-derived stem cells (ASCs) and stems cells from human exfoliated deciduous teeth (SHED) hold great potential for bone tissue engineering and cell therapy. After a preliminary characterization of the main biomolecules ASCs and SHED released in their conditioned media, cells were kept both in normal and osteo-inducing conditions. Conventional assays were performed to prove their osteogenic potential such as quantitative real-time polymerase chain reaction (qRT-PCR) (for RUNX-2, collagen type I, osteopontin and osteonectin), alkaline phosphatase activity, osteocalcin production, and von Kossa staining...
May 14, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29719832/microenvironment-induced-non-sporadic-expression-of-the-axl-and-ckit-receptors-are-related-to-epithelial-plasticity-and-drug-resistance
#3
Tiina A Jokela, Agnete S T Engelsen, Agata Rybicka, Fanny A Pelissier Vatter, James C Garbe, Masaru Miyano, Crina Tiron, Dan Ferariu, Lars A Akslen, Martha R Stampfer, James B Lorens, Mark A LaBarge
The existence of rare cancer cells that sporadically acquire drug-tolerance through epigenetic mechanisms is proposed as one mechanism that drives cancer therapy failure. Here we provide evidence that specific microenvironments impose non-sporadic expression of proteins related to epithelial plasticity and drug resistance. Microarrays of robotically printed combinatorial microenvironments of known composition were used to make cell-based functional associations between microenvironments, which were design-inspired by normal and tumor-burdened breast tissues, and cell phenotypes...
2018: Frontiers in Cell and Developmental Biology
https://www.readbyqxmd.com/read/29668883/deletion-of-delta-like-1-homologue-accelerates-fibroblast-myofibroblast-differentiation-and-induces-myocardial-fibrosis
#4
Patricia Rodriguez, Yassine Sassi, Luca Troncone, Ludovic Benard, Kiyotake Ishikawa, Ronald E Gordon, Santiago Lamas, Jorge Laborda, Roger J Hajjar, Djamel Lebeche
Aims: Myocardial fibrosis is associated with profound changes in ventricular architecture and geometry, resulting in diminished cardiac function. There is currently no information on the role of the delta-like homologue 1 (Dlk1) in the regulation of the fibrotic response. Here, we investigated whether Dlk1 is involved in cardiac fibroblast-to-myofibroblast differentiation and regulates myocardial fibrosis and explored the molecular mechanism underpinning its effects in this process. Methods and results: Using Dlk1-knockout mice and adenoviral gene delivery, we demonstrate that overexpression of Dlk1 in cardio-fibroblasts resulted in inhibition of fibroblast proliferation and differentiation into myofibroblasts...
April 13, 2018: European Heart Journal
https://www.readbyqxmd.com/read/29619029/anti-type-vii-collagen-antibodies-are-identified-in-a-subpopulation-of-bullous-pemphigoid-patients-with-relapse
#5
Delphine Giusti, Grégory Gatouillat, Sébastien Le Jan, Julie Plée, Philippe Bernard, Frank Antonicelli, Bach-Nga Pham
Bullous pemphigoid (BP) is an autoimmune bullous skin disease characterized by anti-BP180 and anti-BP230 autoantibodies (AAbs). Mucous membrane involvement is an uncommon clinical feature of BP which may evoke epidermolysis bullosa acquisita, another skin autoimmune disease characterized by anti-type VII collagen AAbs. We therefore evaluated the presence of anti-type VII collagen AAbs in the serum of BP patients with and without mucosal lesions at time of diagnosis and under therapy. Anti-BP180, anti-BP230, and anti-type VII collagen AAbs were measured by ELISA in the serum of unselected patients fulfilling clinical and histo/immunopathological BP criteria at baseline ( n  = 71) and at time of relapse ( n  = 24)...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29603368/oral-budesonide-in-gastrointestinal-and-liver-disease-a-practical-guide-for-the-clinician
#6
REVIEW
Stephan Miehlke, Manuel Barreiro-de Acosta, Gerd Bouma, Daniel Carpio, Fernando Magro, Tom Moreels, Chris Probert
Oral budesonide is a second- generation steroid which allows local, selective treatment of the gastrointestinal tract and the liver, minimizing systemic exposure. The results of randomized trials comparing budesonide versus placebo or active comparators have led to expert recommendations that budesonide be used to treat mild or moderate active ileocecal Crohn's disease, microscopic colitis (including both collagenous and lymphocytic colitis), ulcerative colitis and non-cirrhotic autoimmune hepatitis. The mechanism of budesonide action obviates the need for dose tapering due to safety reasons after induction therapy...
March 30, 2018: Journal of Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/29555463/genipin-cross-linked-type-ii-collagen-chondroitin-sulfate-composite-hydrogel-like-cell-delivery-system-induces-differentiation-of-adipose-derived-stem-cells-and-regenerates-degenerated-nucleus-pulposus
#7
Xiaopeng Zhou, Jingkai Wang, Weijing Fang, Yiqing Tao, Tengfei Zhao, Kaishun Xia, Chengzhen Liang, Jianming Hua, Fangcai Li, Qixin Chen
Nucleus pulposus (NP) degeneration is usually the origin of intervertebral disc degeneration and consequent lower back pain. Although adipose-derived stem cell (ADSC)-based therapy is regarded to be promising for the treatment of degenerated NP, there is a lack of viable cell carriers to transplant ADSCs into the NP while maintaining cell function. In this study, we developed a type II collagen/chondroitin sulfate (CS) composite hydrogel-like ADSC (CCSA) delivery system with genipin as the cross-linking agent...
March 16, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/29529488/amelioration-of-collagen-antibody-induced-arthritis-in-mice-by-an-antibody-directed-against-the-fibronectin-type-iii-repeats-of-tenascin-c-targeting-fibronectin-type-iii-repeats-of-tenascin-c-in-rheumatoid-arthritis
#8
Brij Bhushan Mehta, Anil Tiwari, Saniya Sharma, Ashu Shukla, Maryada Sharma, Rakesh K Vasishta, Ramesh K Sen, Aman Sharma, Manni Luthra-Guptasarma
Tenascin-C (TN-C) levels are elevated in the synovial tissue and fluid, as well as cartilage of rheumatoid arthritis (RA) patients. In addition, the presence of TN-C fragments has also been documented in arthritic cartilage. We have previously shown that a single chain variable fragment antibody (TN64), directed against the fibronectin type III repeats 1-5 (TNfnIII 1-5) of TN-C, effectively inhibits fibrotic pathology. Given that fibrosis results from chronic inflammation, and the fact that increased levels of TN-C in the synovial fluid of patients with RA contributes to synovial inflammation and joint destruction, we aimed to investigate the role of TNfnIII 1-5 region of TN-C in RA pathogenesis...
May 2018: International Immunopharmacology
https://www.readbyqxmd.com/read/29477473/quercetin-and-low-level-laser-therapy-promote-wound-healing-process-in-diabetic-rats-via-structural-reorganization-and-modulatory-effects-on-inflammation-and-oxidative-stress
#9
Osama M Ahmed, Tarek Mohamed, Hala Moustafa, Hany Hamdy, Rasha R Ahmed, Ebtsam Aboud
This study aimed to evaluate the effect of quercetin and the photo-stimulatory effect of low energy 632.8 nm laser irradiation on excisional wound healing in non-diabetic and diabetic rats. Streptozotocin (45 mg/kg body weight) was intraperitoneally applied for diabetes induction. A full-thickness skin wound (2 × 2 cm2 ) was aseptically created with a scalpel in non-diabetic and diabetic rats on the shaved back of the animals. The wounded non-diabetic and diabetic rats were treated every other day with quercetin by oral gavage at dose 25 mg/kg body weight and/or with low level laser therapy (LLLT) for 14 days...
May 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29451877/influence-of-hyperbaric-oxygen-on-biomechanics-and-structural-bone-matrix-in-type-1-diabetes-mellitus-rats
#10
Pedro Henrique Justino Oliveira Limirio, Huberth Alexandre da Rocha Junior, Richarlisson Borges de Morais, Karen Renata Nakamura Hiraki, Ana Paula Coelho Balbi, Priscilla Barbosa Ferreira Soares, Paula Dechichi
BACKGROUND: The aim of this study was to evaluate the biomechanics and structural bone matrix in diabetic rats subjected to hyperbaric oxygen therapy (HBO). METHODS: Twenty-four male rats were divided into the following groups: Control; Control + HBO; Diabetic, and Diabetic + HBO. Diabetes was induced with streptozotocin (STZ) in the diabetic Groups. After 30 days, HBO was performed every 48h in HBO groups and all animals were euthanized 60 days after diabetic induction...
2018: PloS One
https://www.readbyqxmd.com/read/29449216/adjustable-delivery-of-pro-angiogenic-fgf-2-by-alginate-collagen-microspheres
#11
Zaheer Ali, Anik Islam, Peter Sherrell, Mark Le-Moine, Georgios Lolas, Konstantinos Syrigos, Mehrdad Rafat, Lasse D Jensen
Therapeutic induction of blood vessel growth (angiogenesis) in ischemic tissues holds great potential for treatment of myocardial infarction and stroke. Achieving sustained angiogenesis and vascular maturation has, however, been highly challenging. Here, we demonstrate that alginate:collagen hydrogels containing therapeutic, pro-angiogenic FGF-2, and formulated as microspheres, is a promising and clinically relevant vehicle for therapeutic angiogenesis. By titrating the amount of readily dissolvable and degradable collagen with more slowly degradable alginate in the hydrogel mixture, the degradation rates of the biomaterial controlling the release kinetics of embedded pro-angiogenic FGF-2 can be adjusted...
March 12, 2018: Biology Open
https://www.readbyqxmd.com/read/29415678/plocabulin-a-novel-tubulin-binding-agent-inhibits-angiogenesis-by-modulation-of-microtubule-dynamics-in-endothelial-cells
#12
Carlos M Galmarini, Maud Martin, Benjamin Pierre Bouchet, María José Guillen-Navarro, Marta Martínez-Diez, Juan Fernando Martinez-Leal, Anna Akhmanova, Pablo Aviles
BACKGROUND: Vascular supply of tumors is one of the main targets for cancer therapy. Here, we investigated if plocabulin (PM060184), a novel marine-derived microtubule-binding agent, presents antiangiogenic and vascular-disrupting activities. METHODS: The effects of plocabulin on microtubule network and dynamics were studied on HUVEC endothelial cells. We have also studied its effects on capillary tube structures formation or destabilization in three-dimensional collagen matrices...
February 7, 2018: BMC Cancer
https://www.readbyqxmd.com/read/29383169/p53-derived-hybrid-peptides-induce-apoptosis-of-synovial-fibroblasts-in-the-rheumatoid-joint
#13
Shih-Yao Chen, Ai-Li Shiau, Chao-Liang Wu, Chrong-Reen Wang
Loss of p53-mediated suppression by its dominant-negative counterpart is commonly observed in human cancers, and activating p73 is a therapeutic strategy in p53-mutated oncological patients. In synovial fibroblasts (SFs) from rheumatoid arthritis (RA), mutant p53 can lead to the transformation-like features with resistance to the apoptosis induction. We examined whether intra-articular (i.a.) administration of p53-derived hybrid peptides to activate p73 can induce apoptosis of SFs by using adenoviral vectors encoding 37 amino acid (Ad37AA), a p53-derived hybrid peptide capable of activating p73, to transduce SFs in vitro and inject collagen-induced arthritis (CIA) joints in vivo ...
December 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/29339763/glucocorticoid-receptor-gr%C3%AE-regulates-glucocorticoid-induced-ocular-hypertension-in-mice
#14
Gaurang C Patel, Yang Liu, J Cameron Millar, Abbot F Clark
Prolonged glucocorticoid (GC) therapy can cause GC-induced ocular hypertension (OHT), which if left untreated progresses to iatrogenic glaucoma and permanent vision loss. The alternatively spliced isoform of glucocorticoid receptor GRβ acts as dominant negative regulator of GR activity, and it has been shown that overexpressing GRβ in trabecular meshwork (TM) cells inhibits GC-induced glaucomatous damage in TM cells. The purpose of this study was to use viral vectors to selectively overexpress the GRβ isoform in the TM of mouse eyes treated with GCs, to precisely dissect the role of GRβ in regulating steroid responsiveness...
January 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29336522/continued-root-maturation-despite-persistent-apical-periodontitis-of-immature-permanent-teeth-after-failed-regenerative-endodontic-therapy
#15
Louis M Lin, Sahng G Kim, Gabriela Martin, Bill Kahler
Three immature permanent teeth with pulp necrosis and apical periodontitis were treated with regenerative endodontic therapy (RET), which included root canal disinfection with sodium hypochlorite irrigation, intra-canal medication with calcium hydroxide paste, 17% EDTA rinse, induction of periapical bleeding into the canal, collagen matrix and MTA coronal seal, and composite resin restoration of access cavities. After different periods of follow-up, it was observed that continued root maturation, especially apical closure occurred despite persistent apical periodontitis of immature permanent teeth after failed RET...
January 16, 2018: Australian Endodontic Journal: the Journal of the Australian Society of Endodontology Inc
https://www.readbyqxmd.com/read/29330473/endothelial-heparan-sulfate-deficiency-reduces-inflammation-and-fibrosis-in-murine-diabetic-nephropathy
#16
Ditmer T Talsma, Kirankumar Katta, Marieke A B Ettema, Berna Kel, Marion Kusche-Gullberg, Moh R Daha, Coen A Stegeman, Jacob van den Born, Lianchun Wang
Inflammation plays a vital role in the development of diabetic nephropathy, but the underlying regulatory mechanisms are only partially understood. Our previous studies demonstrated that, during acute inflammation, endothelial heparan sulfate (HS) contributes to the adhesion and transendothelial migration of leukocytes into perivascular tissues by direct interaction with L-selectin and the presentation of bound chemokines. In the current study, we aimed to assess the role of endothelial HS on chronic renal inflammation and fibrosis in a diabetic nephropathy mouse model...
January 12, 2018: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/29313089/first-delivery-and-ovariectomy-affect-biomechanical-and-structural-properties-of-the-vagina-in-the-ovine-model
#17
Iva Urbankova, Geertje Callewaert, Silvia Blacher, Dries Deprest, Lucie Hympanova, Andrew Feola, Laurent De Landsheere, Jan Deprest
INTRODUCTION AND HYPOTHESIS: Animal models are useful for investigating the genesis of pelvic floor dysfunction and for developing novel therapies for its treatment. There is a need for an alternative large-animal model to the nonhuman primate. Therefore we studied the effects of the first vaginal delivery, ovariectomy and systemic hormonal replacement therapy (HRT) on the biomechanical and structural properties of the ovine vagina. METHODS: We examined the gross anatomical properties of nulliparous, primiparous, ovariectomized multiparous, and ovariectomized hormone-replaced multiparous sheep (six animals per group)...
January 8, 2018: International Urogynecology Journal
https://www.readbyqxmd.com/read/29287776/activin-a-causes-hepatic-stellate-cell-activation-via-the-induction-of-tnf%C3%AE-and-tgf%C3%AE-in-kupffer-cells
#18
Foteini Kiagiadaki, Marilena Kampa, Argyro Voumvouraki, Elias Castanas, Elias Kouroumalis, George Notas
BACKGROUND & AIMS: TGFβ superfamily member Activin-A is a multifunctional hormone/cytokine expressed in multiple tissues and cells, where it regulates cellular differentiation, proliferation, inflammation and tissue architecture. High activin-A levels have been reported in alcoholic cirrhosis and non-alcoholic steatohepatitis (NASH). Our aim was to identify the cell types involved in the fibrotic processes induced by activin-A in liver and verify the liver diseases that this molecule can be found increased...
March 2018: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29282316/silk-based-multilayered-angle-ply-annulus-fibrosus-construct-to-recapitulate-form-and-function-of-the-intervertebral-disc
#19
Bibhas K Bhunia, David L Kaplan, Biman B Mandal
Recapitulation of the form and function of complex tissue organization using appropriate biomaterials impacts success in tissue engineering endeavors. The annulus fibrosus (AF) represents a complex, multilamellar, hierarchical structure consisting of collagen, proteoglycans, and elastic fibers. To mimic the intricacy of AF anatomy, a silk protein-based multilayered, disc-like angle-ply construct was fabricated, consisting of concentric layers of lamellar sheets. Scanning electron microscopy and fluorescence image analysis revealed cross-aligned and lamellar characteristics of the construct, mimicking the native hierarchical architecture of the AF...
January 16, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29281003/transcriptome-signature-identifies-distinct-cervical-pathways-induced-in-lipopolysaccharide-mediated-preterm-birth
#20
Alexandra R Willcockson, Tulip Nandu, Cheuk-Lun Liu, Shanmugasundaram Nallasamy, W Lee Kraus, Mala Mahendroo
With half a million babies born preterm each year in the USA and about 15 million worldwide, preterm birth (PTB) remains a global health issue. Preterm birth is a primary cause of infant morbidity and mortality and can impact lives long past infancy. The fact that there are numerous, and many currently unidentified, etiologies of PTB has hindered development of tools for risk evaluation and preventative therapies. Infection is estimated to be involved in nearly 40% of PTBs of known etiology; therefore, understanding how infection-mediated inflammation alters the cervical milieu and leads to preterm tissue biomechanical changes are questions of interest...
March 1, 2018: Biology of Reproduction
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