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Collagen vascular diseases

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https://www.readbyqxmd.com/read/27899144/hypoxia-induced-responses-by-endothelial-colony-forming-cells-are-modulated-by-placental-growth-factor
#1
Michelle B Hookham, Imran H A Ali, Christina L O'Neill, Emer Hackett, Melanie H Lambe, Tina Schmidt, Reinhold J Medina, Sara Chamney, Bharathi Rao, Eibhlin McLoone, David Sweet, Alan W Stitt, Derek P Brazil
BACKGROUND: Endothelial colony-forming cells (ECFCs), also termed late outgrowth endothelial cells, are a well-defined circulating endothelial progenitor cell type with an established role in vascular repair. ECFCs have clear potential for cell therapy to treat ischaemic disease, although the precise mechanism(s) underlying their response to hypoxia remains ill-defined. METHODS: In this study, we isolated ECFCs from umbilical cord blood and cultured them on collagen...
November 29, 2016: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/27894297/pulmonary-hypertension-and-vascular-remodeling-in-mice-exposed-to-crystalline-silica
#2
Igor N Zelko, Jianxin Zhu, Jeffrey D Ritzenthaler, Jesse Roman
BACKGROUND: Occupational and environmental exposure to crystalline silica may lead to the development of silicosis, which is characterized by inflammation and progressive fibrosis. A substantial number of patients diagnosed with silicosis develop pulmonary hypertension. Pulmonary hypertension associated with silicosis and with related restrictive lung diseases significantly reduces survival in affected subjects. An animal model of silicosis has been described previously however, the magnitude of vascular remodeling and hemodynamic effects of inhaled silica are largely unknown...
November 28, 2016: Respiratory Research
https://www.readbyqxmd.com/read/27889505/candesartan-ameliorates-arsenic-induced-hypertensive-vascular-remodeling-by-regularizing-angiotensin-ii-and-tgf-beta-signaling-in-rats
#3
Maibam Wanta Khuman, Sankaran Kutty Harikumar, Abdul Sadam, Manickam Kesavan, Vattaparambil Sukumaran Susanth, Subhashree Parida, Karam Pal Singh, Souvendra Nath Sarkar
Arsenic exposure can cause several cardiovascular diseases, including hypertension, atherosclerosis and microvascular disease. Earlier, we reported that arsenic-mediated enhancement of angiotensin II (AngII) signaling can impair vascular physiology. Here, we investigated whether the AT1 receptor (AT1R) blocker candesartan can ameliorate the arsenic-induced hypertensive vascular remodeling in rats and whether the amelioration could relate to attenuation in vascular AngII and TGF-β signaling. Rats were exposed to sodium arsenite (50ppm) through drinking water for 90 consecutive days...
November 23, 2016: Toxicology
https://www.readbyqxmd.com/read/27888598/adult-onset-still-s-disease-with-different-antibodies-a-case-report-and-review-of-literature
#4
Maryam Mobini, Roya Ghasemian, Fatemeh Zameni
 Adult-onset Still's disease (AOSD) is a rare systemic inflammatory disorder of unknown etiology. There is not currently any specific serological markers for AOSD , and  diagnosis still relying on the exclusion of other likely diagnoses. Yamaguchi's criteria are used as a diagnostic criterion which contains negative serologic markers for other collagen vascular diseases including systemic lupus erythematosus and rheumatoid arthritis. Here we report a 28-year-old woman with arthralgia, fever, rash, leukocytosis, lymphadenopathy, sore throat, abnormal liver function and negative rheumatoid factor and ANA but  seropositive for anti-CCP, anti-dsDNA, and C-ANCA...
October 2016: Acta Medica Iranica
https://www.readbyqxmd.com/read/27885166/the-role-of-interleukin-33-in-chronic-rhinosinusitis
#5
Dong-Kyu Kim, Hong Ryul Jin, Kyoung Mi Eun, Ji-Hun Mo, Seong H Cho, Sohee Oh, David Cho, Dae Woo Kim
RATIONALE: Interleukin (IL)-33, a new member of the IL-1 family, is constitutively expressed in epithelial tissues and lymphoid organs and plays an important role in the pathogenesis of allergic disease. However, the role of IL-33 in chronic rhinosinusitis with nasal polyps (CRSwNP) remains unclear. OBJECTIVE: To investigate the role of IL-33 in the pathophysiology of CRSwNP. METHODS: We investigated IL-33 expression and its cellular origins in the nasal polyps (NPs) of human subjects by immunohistochemistry (IHC), quantitative reverse transcription PCR (qRT-PCR), and multiplex cytokine assays...
November 24, 2016: Thorax
https://www.readbyqxmd.com/read/27882546/human-gingival-fibroblasts-induced-and-differentiated-into-vascular-endothelial-like-cells
#6
Xuqian Liu, Jie Wang, Fusheng Dong, Hexiang Li, Yali Hou
A novel method for repair of vascular disease, mechanical damage, and tissue rebuilding is urgently required. Vascular endothelial cells (VECs) play an essential role in vascular rebuilding and vasotransplantation. In the present study, human gingival fibroblasts (HGFs) were cultured and induced into endothelial-like cells in vitro in order to confirm that HGFs with stem cell properties possessed the potential for differentiation into endothelial-like cells. The epithelium was extracted from normal human gingiva consisting of epithelium and connective tissue, which was isolated from patients...
November 24, 2016: Development, Growth & Differentiation
https://www.readbyqxmd.com/read/27881387/intrauterine-growth-restriction-influences-vascular-remodeling-and-stiffening-in-the-weanling-rat-more-than-sex-or-diet
#7
R Blair Dodson, Thomas A Miller, Kyle N Powers, Yueqin Yang, Baifeng Yu, Kurt H Albertine, Erin K Zinkhan
Intrauterine growth restriction (IUGR) increases the incidence of adult cardiovascular disease (CVD). The sex-specific developmental mechanisms for IUGR-induced and western high fat diet (HFD) modification of CVD remain poorly understood. We hypothesized a maternal HFD in the Sprague-Dawley rat would augment IUGR-induced CVD in the offspring through decreased cardiac function and increased extracellular matrix (ECM) remodeling and stiffness in a sex-specific manner. HFD or regular diet (Reg) was given from 5 weeks prior to mating through postnatal day 21 (PND21)...
November 23, 2016: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/27872616/novel-approach-for-evaluation-of-bacteroides-fragilis-protective-role-against-bartonella-henselae-liver-damage-in-immunocompromised-murine-model
#8
Chiara Pagliuca, Annunziata G Cicatiello, Roberta Colicchio, Adelaide Greco, Raimondo Cerciello, Luigi Auletta, Sandra Albanese, Elena Scaglione, Caterina Pagliarulo, Gabiria Pastore, Gelsomina Mansueto, Arturo Brunetti, Bice Avallone, Paola Salvatore
Bartonella henselae is a gram-negative facultative intracellular bacterium and is the causative agent of cat-scratch disease. Our previous data have established that Bacteroides fragilis colonization is able to prevent B. henselae damages through the polysaccharide A (PSA) in an experimental murine model. In order to determine whether the PSA is essential for the protection against pathogenic effects of B. henselae in immunocompromised hosts, SCID mice were co-infected with B. fragilis wild type or its mutant B...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27863377/variable-patterns-of-ectopic-mineralization-in-enpp1asj-2j-mice-a-model-for-generalized-arterial-calcification-of-infancy
#9
Sarah Y Siu, Nathaniel A Dyment, David W Rowe, John P Sundberg, Jouni Uitto, Qiaoli Li
Generalized arterial calcification of infancy (GACI) is an autosomal recessive disorder characterized by early onset of extensive mineralization of the cardiovascular system. The classical forms of GACI are caused by mutations in the ENPP1 gene, encoding a membrane-bound pyrophosphatase/phosphodiesterase that hydrolyzes ATP to AMP and inorganic pyrophosphate. The asj-2J mouse harboring a spontaneous mutation in the Enpp1 gene has been characterized as a model for GACI. These mutant mice develop ectopic mineralization in skin and vascular connective tissues as well as in cartilage and collagen-rich tendons and ligaments...
November 14, 2016: Oncotarget
https://www.readbyqxmd.com/read/27852881/treatment-of-angio-seal-related-femoral-artery-occlusion-using-directional-atherectomy-primary-results-and-midterm-follow-up
#10
Anvar Babaev, Rohit Gokhale, Susanna Zavlunova, Michael Attubato
OBJECTIVE: We describe a novel approach for the endovascular treatment of femoral artery occlusion as a result of Angio-Seal closure device deployment. BACKGROUND: Angio-Seal is the most commonly used vascular closure device following percutaneous coronary and peripheral catheterizations worldwide. A rare complication of Angio-Seal deployment is an occlusion of the femoral artery leading to limb ischemia requiring revascularization. Given its unique ability to cut both atherosclerotic plaque and the Angio-Seal anchor with a collagen plug at operator-directed planes, TurboHawk/HawkOne atherectomy device can be a fast and effective approach to treat Angio-Seal-associated femoral artery occlusions...
November 16, 2016: Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/27851519/1884-unusual-case-of-collagen-vascular-disease-induced-diffuse-alveolar-hemorrhage-requiring-ecmo
#11
Zachary Gales, Ryan Hoecker, Ricardo Restrepo, Christina Heindel, Karel Calero, Robert Hooker
No abstract text is available yet for this article.
December 2016: Critical Care Medicine
https://www.readbyqxmd.com/read/27836751/activation-of-gper-ameliorates-experimental-pulmonary-hypertension-in-male-rats
#12
Allan K Alencar, Guilherme C Montes, Tadeu Montagnoli, Ananssa M S Silva, Sabrina T Martinez, Aline G Fraga, Hao Wang, Leanne Groban, Roberto T Sudo, Gisele Zapata-Sudo
RATIONALE: Pulmonary hypertension (PH) is characterized by pulmonary vascular remodeling that leads to pulmonary congestion, uncompensated right-ventricle (RV) failure, and premature death. Preclinical studies have demonstrated that the G protein-coupled estrogen receptor (GPER) is cardioprotective in male rats and that its activation elicits vascular relaxation in rats of either sex. OBJECTIVES: To study the effects of GPER on the cardiopulmonary system by the administration of its selective agonist G1 in male rats with monocrotaline (MCT)-induced PH...
November 8, 2016: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/27833976/histopathological-and-clinical-traps-in-lichen-sclerosus-a-case-report
#13
Daciana Elena Brănişteanu, Daniel Constantin Brănişteanu, Gabriela Stoleriu, Dan Ferariu, Cătălina Maria Voicu, Loredana Elena Stoica, Constantin Căruntu, Daniel Boda, Florina Mihaela Filip-Ciubotaru, Andreea Dimitriu, Cezar Doru Radu
Lichen sclerosus et atrophicus and limited systemic scleroderma (acrosclerosis) are inflammatory skin diseases that ultimately evolve into two distinct modes of atrophic scar formation, but which can easily be confused clinically. They are very rarely associated. The literature has reported cases in which lichen sclerosus was associated with various forms of scleroderma, but often with localized morphea. The characteristic histopathological picture of lichen sclerosus includes a thin epidermis, with orthohyperkeratosis and vascular degeneration in the basal layer, loss of elastic fibers, and band-like inflammatory infiltrate in the papillary dermis, while systemic sclerosis is characterized by excessive deposition of collagen in the dermis, accompanied by reduction in adnexal structures and their entrapment in collagen, and the presence of perivascular lymphocytic inflammatory infiltrate...
2016: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/27833974/papillary-thyroid-cancer-stroma-histological-and-immunohistochemical-study
#14
Tatiana Georgiana Radu, Marius Eugen Ciurea, Stelian ŞtefăniŢă Mogoantă, Cristina Jana Busuioc, Florin Grosu, Mihaela Ţenovici, Ileana Octavia Petrescu, Ionela Mihaela Vladu
Thyroid cancer is the most frequent endocrine neoplasia. The incidence of the disease has been increasing in the past few decades in many regions, especially where the population was subject to some forms of accidental exposure. Among all the histopathological forms, papillary thyroid cancer (PTC) is the most common histological subtype of malignant thyroid tumor, representing about 80-90% of all malignant thyroid tumors. Although it is generally accepted that tumor stroma plays an essential role in the development and metastasis of tumor cells, histopathological studies focused on tumor cells characteristics...
2016: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/27830885/the-protective-role-of-melatonin-on-l-arginine-induced-acute-pancreatitis-in-adult-male-albino-rats
#15
Ahmed S Sadek, Rehab T Khattab
BACKGROUND: Acute pancreatitis (AP) is an inflammatory disease that has an increasing incidence worldwide. It is associated with high morbidity and mortality rates ranging from 15-40% in its severe form. Oxidative stress plays an important role in pancreatic acinar cell injury in case of AP. Melatonin is proven to have both antioxidant and anti-inflammatory effects. The aim of the work was to investigate the protective role of melatonin (Mel) against L-arginine (L-arg)-induced AP in adult male albino rats...
November 10, 2016: Folia Morphologica (Warsz)
https://www.readbyqxmd.com/read/27826465/collagenopathies-implications-for-abdominal-wall-reconstruction-a-systematic-review
#16
Bridget Harrison, Kyle Sanniec, Jeffrey E Janis
BACKGROUND: The etiology of hernia formation is strongly debated and includes mechanical strain, prior surgical intervention, abnormal embryologic development, and increased intraabdominal pressure. Although the most common inciting cause in ventral hernias is previous abdominal surgery, many other factors contribute. We explore this etiology through an examination of the current literature and existing evidence on patients with collagen vascular diseases, such as Ehlers-Danlos syndrome...
October 2016: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/27824545/targeted-therapy-in-systemic-sclerosis
#17
REVIEW
Murray Baron
Targeted therapies use an understanding of the pathophysiology of a disease in an individual patient. Although targeted therapy for systemic sclerosis (SSc, scleroderma) has not yet reached the level of patient-specific treatments, recent developments in the understanding of the global pathophysiology of the disease have led to new treatments based on the cells and pathways that have been shown to be involved in the disease pathogenesis. The presence of a B cell signature in skin biopsies has led to the trial of rituximab, an anti-CD20 antibody, in SSc...
October 31, 2016: Rambam Maimonides Medical Journal
https://www.readbyqxmd.com/read/27808345/mcrp-triggers-angiogenesis-by-inducing-f3-transcription-and-tf-signalling-in-microvascular-endothelial-cells
#18
Esther Peña, Raquel de la Torre, Gemma Arderiu, Mark Slevin, Lina Badimon
Inflammation contributes to vascular disease progression. However, the role of circulating inflammatory molecules on microvascular endothelial cell (mECs) is not fully elucidated. The aim of this study was to investigate the effects of the short pentraxin CRP on microvascular endothelial cell angiogenic function. Subcutaneously implanted collagen plugs seeded with human mECs exposed to monomeric CRP (mCRP) in mice showed formation of an extended network of microvessels both in the plug and the overlying skin tissue, while mECs exposure to pentameric native CRP (nCRP) induced a much milder effect...
November 3, 2016: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/27803296/homocysteine-deteriorates-intrahepatic-derangement-and-portal-systemic-collaterals-in-cirrhotic-rats
#19
Hung-Chun Tung, Shao-Jung Hsu, Ming-Hung Tsai, Te-Yueh Lin, I-Fang Hsin, Teh-Ia Huo, Fa-Yauh Lee, Hui-Chun Huang, Hsin-Ling Ho, Han-Chieh Lin, Shou-Dong Lee
In liver cirrhosis, the altered levels of vasoactive substances, especially endothelin-1 (ET-1) and nitric oxide (NO) leads to elevated intrahepatic resistance, increased portal-systemic collaterals, and abnormal intra- and extra-hepatic vascular responsiveness. These derangements aggravate portal hypertension-related complications such as gastroesophageal variceal bleeding. Homocysteine, a substance implicated in cardiovascular diseases, has been found with influences on vasoresponsiveness and angiogenesis...
November 1, 2016: Clinical Science (1979-)
https://www.readbyqxmd.com/read/27801552/th17-responses-to-col-v-k%C3%AE-1-tubulin-and-vimentin-are-present-early-in-human-development-and-persist-lifelong
#20
Jeremy A Sullivan, Ewa Jankowska-Gan, Subramanya Hegde, Matthew A Pestrak, Vrushali V Agashe, Arick C Park, Matthew E Brown, John F Kernien, David S Wilkes, Dixon B Kaufman, Daniel S Greenspan, William J Burlingham
Th17-dependent autoimmune responses can develop after heart or lung transplantation, and are associated with fibro-obliterative forms of chronic rejection. However, the specific self-antigens involved are typically different from those associated with autoimmune disease. To investigate the basis of these responses, we questioned whether removal of Tregs or blockade of function reveals a similar auto-antigen bias. We found that Th17 cells specific for collagen type V (Col V), kα-1-tubulin, and vimentin were present in healthy, adult PBMC, cord blood, and fetal thymus...
November 1, 2016: American Journal of Transplantation
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