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Collagen vascular diseases

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https://www.readbyqxmd.com/read/28100839/tyrosine-kinase-blocking-collagen-iv-derived-peptide-suppresses-ocular-neovascularization-and-vascular-leakage
#1
Raquel Lima E Silva, Yogita Kanan, Adam C Mirando, Jayoung Kim, Ron B Shmueli, Valeria E Lorenc, Seth D Fortmann, Jason Sciamanna, Niranjan B Pandey, Jordan J Green, Aleksander S Popel, Peter A Campochiaro
Vascular endothelial growth factor (VEGF)-neutralizing proteins provide benefit in several retinal and choroidal vascular diseases, but some patients still experience suboptimal outcomes, and the need for frequent intraocular injections is a barrier to good outcomes. A mimetic peptide derived from collagen IV, AXT107, suppressed subretinal neovascularization (NV) in two mouse models predictive of effects in neovascular age-related macular degeneration (NVAMD) and inhibited retinal NV in a model predictive of effects in ischemic retinopathies...
January 18, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/28068529/impact-of-high-dose-statins-on-vitamin-d-levels-and-platelet-function-in-patients-with-coronary-artery-disease
#2
Monica Verdoia, Patrizia Pergolini, Roberta Rolla, Matteo Nardin, Alon Schaffer, Lucia Barbieri, Veronica Daffara, Paolo Marino, Giorgio Bellomo, Harry Suryapranata, Giuseppe De Luca
BACKGROUND: Statins represent a pivotal treatment in coronary artery disease, offering a reduction in cardiovascular risk even beyond their lipid-lowering action. However, the mechanism of these "pleiotropic" benefits of statins is poorly understood. Vitamin D has been suggested as a potential mediator of the anti-inflammatory, anti-thrombotic and vascular protecting effects of statins. Aim of present study was to assess the impact of a high-intensity statin therapy on vitamin D levels and platelet function in patients with coronary artery disease...
December 28, 2016: Thrombosis Research
https://www.readbyqxmd.com/read/28063051/optimized-mouse-models-for-liver-fibrosis
#3
Yong Ook Kim, Yury Popov, Detlef Schuppan
Fibrosis is the excessive accumulation of extracellular matrix components due to chronic injury, with collagens as predominant structural components. Liver fibrosis can progress to cirrhosis, which is characterized by a severe distortion of the delicate hepatic vascular architecture, the shunting of the blood supply away from hepatocytes and the resultant functional liver failure. Cirrhosis is associated with a highly increased morbidity and mortality and represents the major hard endpoint in clinical studies of chronic liver diseases...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28062506/wnt-signaling-pathway-inhibitor-sclerostin-inhibits-angiotensin-ii-induced-aortic-aneurysm-and-atherosclerosis
#4
Smriti Murali Krishna, Sai-Wang Seto, Roby J Jose, Jiaze Li, Susan K Morton, Erik Biros, Yutang Wang, Vianne Nsengiyumva, Jan H N Lindeman, Gabriela G Loots, Catherine M Rush, Jeffrey M Craig, Jonathan Golledge
OBJECTIVE: Sclerostin (SOST) has been identified as an important regulator of bone formation; however, it has not been previously implicated in arterial disease. The aim of this study was to assess the role of SOST in aortic aneurysm (AA) and atherosclerosis using human samples, a mouse model, and in vitro investigations. APPROACH AND RESULTS: SOST protein was downregulated in human and mouse AA samples compared with controls. Transgenic introduction of human SOST in apolipoprotein E-deficient (ApoE(-/-)) mice (SOST(Tg)...
December 22, 2016: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/28053559/systemic-lupus-erythematosus-and-pulmonary-arterial-hypertension-links-risks-and-management-strategies
#5
REVIEW
Konstantinos Tselios, Dafna D Gladman, Murray B Urowitz
Systemic lupus erythematosus (SLE) is characterized by the second highest prevalence of pulmonary arterial hypertension (PAH), after systemic sclerosis, among the connective tissue diseases. SLE-associated PAH is hemodynamically defined by increased mean pulmonary artery pressure at rest (≥25 mmHg) with normal pulmonary capillary wedge pressure (≤15 mmHg) and increased pulmonary vascular resistance. Estimated prevalence ranges from 0.5% to 17.5% depending on the diagnostic method used and the threshold of right ventricular systolic pressure in studies using transthoracic echocardiogram...
2017: Open Access Rheumatology: Research and Reviews
https://www.readbyqxmd.com/read/28034724/disruption-of-transforming-growth-factor-%C3%AE-superfamily-signaling-a-shared-mechanism-underlying-hereditary-cerebral-small-vessel-disease
#6
REVIEW
Yumi Yamamoto, Masafumi Ihara
Cerebral small vessel disease (SVD) is not only one of the leading causes of cognitive impairment but also an important contributory factor in Alzheimer's disease. SVD and related white matter changes are common in the elderly, but the underlying pathogenic mechanism remains unclear. The end-stage pathology of SVD often involves replacement of vascular smooth muscle cells with collagenous or other nontensile fibrillary material. Recent studies on hereditary SVD have revealed a close relationship between small vessel pathology and disruption of transforming growth factor-β (TGF-β) superfamily signaling...
December 26, 2016: Neurochemistry International
https://www.readbyqxmd.com/read/28034277/the-two-faces-of-interleukin-17a-in-atherosclerosis-interleukin-17a-and-atherosclerosis
#7
Mohammadreza Akhavanpoor, Hamidreza Akhavanpoor, Christian A Gleissner, Susanne Wangler, Andreas O Doesch, Hugo A Katus, Christian Erbel
A complex network of different cytokines and chemokines modulate atherosclerosis, a chronic inflammatory disease. Interleukin-17A (IL-17A) is expressed by different leukocyte subsets such as CD4+IL-17+ T cells (Th17), γδ T cells, natural killer cells, natural killer T cells, and neutrophils. IL-17A plays an important role in host defense and is involved in the pathology of different autoimmune and inflammatory diseases. Recent studies demonstrate an association of IL-17A with atherosclerosis. IL-17A seems to have primarily pro-inflammatory effects in atherogenesis, although there are partially controversial results in the literature...
December 29, 2016: Current Drug Targets
https://www.readbyqxmd.com/read/28024287/tetramethylpyrazine-attenuates-carbon-tetrachloride-caused-liver-injury-and-fibrogenesis-and-reduces-hepatic-angiogenesis-in-rats
#8
Shifeng Zhao, Zili Zhang, Linnan Qian, Qiuyi Lin, Chenxi Zhang, Jiangjuan Shao, Feng Zhang, Shizhong Zheng
Liver fibrosis represents a frequent event following chronic insult to trigger wound healing reactions with abnormalities of angiogenesis in the liver. Capillarization of liver sinusoidal endothelial cell (LSEC) is the pivotal event during liver angiogenesis. In the current study, we sought to investigate the effect of tetramethylpyrazine (TMP) on carbon tetrachloride (CCl4)-induced liver injury and fibrosis in rats, and to further examine the molecular mechanisms of TMP-induced anti-angiogenic effect. We found that TMP significantly ameliorated histopathological feature of liver fibrosis characterized by decreased collagen deposition, hepatocyte apoptosis, and expression of biochemical indicators, such as aminotransferase (ALT), aspartate aminotransferase (AST) and alkaline phosphatase (ALP)...
December 23, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28012489/pathognomonic-remodeling-of-blood-and-lymphatic-capillaries-in-idiopathic-pulmonary-fibrosis
#9
REVIEW
Masahito Ebina
Numerous studies have been published investigating the pathologic alterations in various interstitial pneumonias, particularly in idiopathic pulmonary fibrosis (IPF). However, the few existing studies on capillary remodeling, which does not seem to have priority for pathologic diagnosis, are contradictory, with some reporting increased and others reduced vascularization. We hypothesized that these discrepancies were due to the temporal heterogeneity of the lesions in IPF. We subsequently developed original techniques for evaluating vascular density within the alveolar septa and discovered, for the first time, a heterogeneous increase in alveolar capillaries in the lungs of IPF patients...
January 2017: Respiratory Investigation
https://www.readbyqxmd.com/read/28007105/outcomes-and-complications-of-excimer-laser-surgery-in-patients-with-collagen-vascular-and-other-immune-mediated-inflammatory-diseases
#10
Julie M Schallhorn, Steven C Schallhorn, Keith A Hettinger, Jan A Venter, Martina Pelouskova, David Teenan, Stephen J Hannan
PURPOSE: To assess refractive and visual outcomes and postoperative complications in a large number of patients with well-controlled collagen vascular and other immune-mediated inflammatory diseases. SETTING: Optical Express, Glasgow, United Kingdom. DESIGN: Retrospective case series. METHODS: The files were reviewed of patients who had collagen vascular and other immune-mediated inflammatory diseases and who had excimer laser surgery between 2008 and 2015...
December 2016: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/28003530/the-stentable-in-vitro-artery-an-instrumented-platform-for-endovascular-device-development-and-optimization
#11
Elizabeth E Antoine, François P Cornat, Abdul I Barakat
Although vascular disease is a leading cause of mortality, in vitro tools for controlled, quantitative studies of vascular biological processes in an environment that reflects physiological complexity remain limited. We developed a novel in vitro artery that exhibits a number of unique features distinguishing it from tissue-engineered or organ-on-a-chip constructs, most notably that it allows deployment of endovascular devices including stents, quantitative real-time tracking of cellular responses and detailed measurement of flow velocity and lumenal shear stress using particle image velocimetry...
December 2016: Journal of the Royal Society, Interface
https://www.readbyqxmd.com/read/27999100/platelet-hyperreactivity-in-diabetes-focus-on-gpvi-signaling-are-useful-drugs-already-available
#12
Jane F Arthur, Karin Jandeleit-Dahm, Robert K Andrews
Adults with diabetes are 2-4 times more likely to suffer from heart disease or ischemic stroke than adults without diabetes, yet standard antiplatelet therapy, which is the cornerstone for primary and secondary prevention of cardiovascular disease, fails in many patients with diabetes. Three independent but often interrelated variables that contribute to platelet hyperreactivity-high blood glucose, oxidative stress, and elevated vascular shear forces-coexist in patients with diabetes, creating a perilous concurrence of risk factors for cardiovascular events...
January 2017: Diabetes
https://www.readbyqxmd.com/read/27992456/prostaglandin-d2-attenuates-bleomycin-induced-lung-inflammation-and-pulmonary-fibrosis
#13
Taiki Kida, Shinya Ayabe, Keisuke Omori, Tatsuro Nakamura, Toko Maehara, Kosuke Aritake, Yoshihiro Urade, Takahisa Murata
Pulmonary fibrosis is a progressive and fatal lung disease with limited therapeutic options. Although it is well known that lipid mediator prostaglandins are involved in the development of pulmonary fibrosis, the role of prostaglandin D2 (PGD2) remains unknown. Here, we investigated whether genetic disruption of hematopoietic PGD synthase (H-PGDS) affects the bleomycin-induced lung inflammation and pulmonary fibrosis in mouse. Compared with H-PGDS naïve (WT) mice, H-PGDS-deficient mice (H-PGDS-/-) represented increased collagen deposition in lungs 14 days after the bleomycin injection...
2016: PloS One
https://www.readbyqxmd.com/read/27968927/autoimmune-collagen-vascular-diseases-kids-are-not-just-little-people
#14
Sean Timpane, Heather Brandling-Bennett, Arni K Kristjansson
Morphea, dermatomyositis (DM), and discoid lupus erythematosus (DLE) are autoimmune collagen vascular diseases that can present at any age. In all three of these diseases, the tenants of diagnosis and treatment are largely the same in both children and adults, with a few notable differences. Children with morphea are more likely to present with the linear subtype and have a higher incidence of extracutaneous manifestations. Children often need early aggressive systemic treatment to try to prevent long-term sequelae of morphea...
November 2016: Clinics in Dermatology
https://www.readbyqxmd.com/read/27966506/versatility-of-nasolabial-flaps-for-the-management-of-severe-trismus-in-oral-submucous-fibrosis
#15
S M Balaji
BACKGROUND: Oral submucous fibrosis (OSMF) is a chronic insidious disease affecting any part of the oral cavity and sometimes the pharynx. It is a collagen-related disorder predominantly associated with tobacco/areca nut chewing habit and characterized by progressive hyalinization of the submucosa. Prevalence of OSMF is 2.01%, and malignant transformation rate of 2.3%-7.6% has been reported in the literature. Measures such as forcing the mouth open and cutting the fibrotic bands have resulted in more fibrosis and disability...
September 2016: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
https://www.readbyqxmd.com/read/27956160/microrna-145-mediates-the-formation-of-angiotensin-ii-induced-murine-abdominal-aortic-aneurysm
#16
Jing Wu, Jun Wang, Xiaoou Li, Xiaofeng Liu, Xiuyan Yu, Yunling Tian
BACKGROUND: MicroRNA-145 (miR-145) has been implicated in vascular smooth muscle cell differentiation, but the underlying mechanisms have not been fully understood, especially their role in abdominal aortic aneurysm (AAA) expansion. Here, we sought to explore and define the mechanisms of miR-145 function in the experimental AAA models in AngII-infused ApoE(-/-) mice. METHODS: miR-145 was overexpressed in ApoE(-/-) mice via lentivirus infection, and then the incidence of AAA, maximum abdominal aortic diameter, elastin degradation and MMP2 activation were determined in AngII-infused ApoE(-/-) mice...
November 24, 2016: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/27938900/preclinical-study-of-patient-specific-cell-free-nanofiber-tissue-engineered-vascular-grafts-using-3-dimensional-printing-in-a-sheep-model
#17
Takuma Fukunishi, Cameron A Best, Tadahisa Sugiura, Justin Opfermann, Chin Siang Ong, Toshiharu Shinoka, Christopher K Breuer, Axel Krieger, Jed Johnson, Narutoshi Hibino
BACKGROUND: Tissue-engineered vascular grafts (TEVGs) offer potential to overcome limitations of current approaches for reconstruction in congenital heart disease by providing biodegradable scaffolds on which autologous cells proliferate and provide physiologic functionality. However, current TEVGs do not address the diverse anatomic requirements of individual patients. This study explores the feasibility of creating patient-specific TEVGs by combining 3-dimensional (3D) printing and electrospinning technology...
November 14, 2016: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/27938812/acral-manifestations-of-paraneoplastic-and-collagen-vascular-diseases
#18
Ülker Gül
The skin often signals a number of systemic disease, making skin findings of paramount significance. Paraneoplastic diseases and collagen vascular diseases are vitally important illnesses. Paraneoplastic diseases and collagen vascular diseases may also occur with many different acral skin findings. Paraneoplastic skin diseases, associated with some cancers, are by definition nonmalignant skin disorders. These diseases can occur before, simultaneously, or after the diagnosis of cancer. Acral paraneoplastic diseases include acanthosis nigricans maligna, acquired pachydermatoglyphia, acrokeratosis paraneoplastica, palmoplantar keratoderma, and paraneoplastic nail disorders...
January 2017: Clinics in Dermatology
https://www.readbyqxmd.com/read/27938493/thrombospondin-1-derived-peptide-rfyvvmwk-improves-the-adhesive-phenotype-of-cd34sup-sup-cells-from-atherosclerotic-patients-with-type-2-diabetes
#19
Sylvie Cointe, Éric Rhéaume, Catherine Martel, Olivier Blanc-Brude, Evemie Dubé, Florence Sabatier, Françoise Dignat-George, Jean-Claude Tardif, Arnaud Bonnefoy
<p>Background: CD34(+) progenitor cells are growingly used for vascular repair. However, in diabetic individuals with cardiovascular diseases, these cells have dysfunctional engraftment capabilities, which compromise their use for autologous cell therapy. The thrombospondin-1-derived peptide RFYVVMWK has previously been reported to stimulate cell adhesiveness through CD47 and integrin activation pathways.</p><p>Objectives: Our aim was to test whether RFYVVMWK preconditioning could modulate CD34(+) cells phenotype and enhance its pro-adhesive properties in diabetic patients...
6, 2016: Cell Transplantation
https://www.readbyqxmd.com/read/27935899/-algorithm-for-selection-of-individual-therapy-with-clopidogrel-in-vascular-surgical-practice
#20
A I Shevela, A A Slepukhina, E M Zelenskaya, T A Seredina, G I Lifshits
For treatment of patients with diseases of lower limb arteries and prevention of cardiovascular complications in high-risk patients (those with diabetes mellitus, arterial hypertension, dyslipidemia, obesity) permanent antiplatelet therapy is indicated. A problem is variable individual sensitivity to therapeutic agents. For antiplatelet therapy in patients with atherosclerosis of lower limb arteries there has been obtained an evidence-supported base concerning efficacy of long-term administration of clopidogrel preparations, unlike patients with acute coronary syndrome, for whom there has been accumulated an evidence-confirmed base of administering clopidogrel preparations, as well as ticagrelor and prasugrel in various clinical situations...
2016: Angiologii︠a︡ i Sosudistai︠a︡ Khirurgii︠a︡, Angiology and Vascular Surgery
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