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https://www.readbyqxmd.com/read/28087639/vegfd-modulates-both-angiogenesis-and-lymphangiogenesis-during-zebrafish-embryonic-development
#1
Neil I Bower, Adam J Vogrin, Ludovic Le Guen, Huijun Chen, Steven A Stacker, Marc G Achen, Benjamin M Hogan
Vascular endothelial growth factors (VEGFs) control angiogenesis and lymphangiogenesis during development and in pathological conditions. In the zebrafish trunk, Vegfa controls the formation of intersegmental arteries by primary angiogenesis and Vegfc is essential for secondary angiogenesis, the formation of veins and lymphatics. VEGFD has been largely thought of as dispensable for vascular development in vertebrates. Here, we generated a zebrafish vegfd mutant by genome editing. vegfd mutants display significant defects in facial lymphangiogenesis independent of vegfc function...
January 13, 2017: Development
https://www.readbyqxmd.com/read/28087600/sunitinib-stimulates-expression-of-vegfc-by-tumor-cells-and-promotes-lymphangiogenesis-in-clear-cell-renal-cell-carcinomas
#2
Maeva Dufies, Sandy Giuliano, Damien Ambrosetti, Audrey Claren, Papa Diogop Ndiaye, Michalis Mastri, Walid Moghrabi, Lindsay S Cooley, Marc Ettaiche, Emmanuel Chamorey, Julien Parola, Valerie Vial, Marilena Lupu-Plesu, Jean-Christophe Bernhard, Alain Ravaud, Delphine Borchiellini, Jean Marc Ferrero, Andreas Bikfalvi, John M L Ebos, Khalid S A Khabar, Renaud Grepin, Gilles Pagès
Sunitinib is an antiangiogenic therapy given as a first-line treatment for renal cell carcinoma (RCC). While treatment improves progression-free survival, most patients relapse. We hypothesized that patient relapse can stem from the development of a lymphatic network driven by the production of the main growth factor for lymphatic endothelial cells, vascular endothelial growth factor C (VEGFC). In this study, we found that sunitinib can stimulate VEGFC gene transcription and increase VEGFC mRNA half-life. Additionally, sunitinib activated p38 MAP kinase, which resulted in the upregulation/activity of HuR and inactivation of tristetraprolin, two AU-rich-element binding proteins...
January 13, 2017: Cancer Research
https://www.readbyqxmd.com/read/28081372/role-of-hyperplasia-of-gingival-lymphatics-in-periodontal-inflammation
#3
P Papadakou, A Bletsa, M A Yassin, T V Karlsen, H Wiig, E Berggreen
Lymphatic vessels are important for maintenance of tissue fluid homeostasis and afferent antigen transport. In chronic inflammation, lymphangiogenesis takes place and is characterized by lymphatic endothelial cell proliferation and lymphatic hyperplasia. Vascular endothelial growth factor C (VEGFC) is the main known lymphangiogenic growth factor, and its expression is increased in periodontitis, a common chronic infectious disease that results in tissue destruction and alveolar bone loss. The role of lymphangiogenesis during development of periodontitis is unknown...
December 1, 2016: Journal of Dental Research
https://www.readbyqxmd.com/read/28063176/frequency-and-phenotype-of-nk-cells-and-nk-cell-subsets-in-bovine-lymphoid-compartments-and-blood
#4
Carly A Hamilton, Suman Mahan, Charlotte R Bell, Bernardo Villarreal-Ramos, Bryan Charleston, Gary Entrican, Jayne C Hope
NK cells are widely distributed in lymphoid and non-lymphoid tissues however little is known about the recirculation of NK cells between blood and tissues. This is relevant to understanding recirculation in the steady-state and also for determining the roles for NK cells in vaccine-induced immunity and responses to infection. Therefore, the percentage of NK cells and their phenotype across peripheral blood, afferent lymph and lymph nodes in steady-state conditions was investigated in cattle using the pseudo-afferent lymphatic cannulation model...
January 7, 2017: Immunology
https://www.readbyqxmd.com/read/28061513/angiopoietin-2-blockade-promotes-survival-of-corneal-transplants
#5
Liwei Zhang, Guangyu Li, Roberto Sessa, Gyeong Jin Kang, Meng Shi, Shaokui Ge, Anna Jiang Gong, Ying Wen, Sudhakar Chintharlapalli, Lu Chen
Purpose: Corneal transplantation remains the last hope for vision restoration, and lymphangiogenesis (LG) is a primary mediator of transplant rejection. This study was to investigate the specific role of angiopoietin-2 (Ang-2) in transplantation-associated LG and graft rejection. Methods: Orthotopic corneal transplantation was performed between fully mismatched C57BL/6 (donor) and BALB/c (recipient) mice to assess the effects of Ang-2 blockade via neutralizing antibody...
January 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28060028/kinetics-of-angiogenic-responses-in-corneal-transplantation
#6
Takenori Inomata, Alireza Mashaghi, Antonio Di Zazzo, Sang-Mok Lee, Homer Chiang, Reza Dana
PURPOSE: To delineate and compare the kinetics of corneal angiogenesis after high-risk (HR) versus low-risk (LR) corneal transplantation. METHODS: In mice, intrastromal sutures were placed in the recipient graft bed 2 weeks before allogeneic transplantation to induce angiogenesis and amplify the risk of graft rejection. Control (LR) graft recipients did not undergo suture placement, and thus the host bed remained avascular at the time of transplantation. Graft hemangiogenesis and opacity scores were evaluated for 8 weeks by slit-lamp biomicroscopy...
January 4, 2017: Cornea
https://www.readbyqxmd.com/read/28056456/bladder-metastases-from-lung-cancer-clinical-and-pathological-implications-a-systematic-review
#7
Francesca Sanguedolce, Domenico Loizzi, Francesco Sollitto, Maurizio Di Bisceglie, Giuseppe Lucarelli, Giuseppe Carrieri, Pantaleo Bufo, Luigi Cormio
Lung cancer is the tumor with the highest incidence in males worldwide and the most common cause of death from cancer overall; its high mortality is mostly due to its propensity to spread to other organs through lymphatic and blood vessels in spite of proper treatment. Bladder metastases from lung cancer are rare, with only 11 cases having been reported, all in recent years. This review aims to discuss some critical points regarding this uncommon condition, namely: (a) lung and bladder tumors share similar etiologic features; (b) almost all bladder metastases from lung cancer arise from lung adenocarcinomas; (c) cytology and superficial bladder biopsy may be falsely negative, since the neoplastic cells coming through the hematogenous route are typically located in the lamina propria and/or muscularis propria of the bladder wall; and (d) the differential diagnosis with primary bladder adenocarcinoma as well as primary and secondary small-cell carcinomas may be challenging...
January 6, 2017: Oncology
https://www.readbyqxmd.com/read/28031952/life-as-an-early-career-researcher-interview-with-catherine-martel
#8
Catherine Martel
Catherine Martel speaks to Francesca Lake, Managing Commissioning Editor: Catherine Martel obtained her PhD from the Université de Montréal and pursued a postdoctoral fellowship first at Mount Sinai School of Medicine in New York (NY, USA), then at Washington University School of Medicine in St Louis (MO, USA), and obtained the Junior Investigator Award for Women from the Arteriosclerosis, Thrombosis and Vascular Biology council of the American Heart Association. Her postdoctoral work is certainly groundbreaking and brings forward new considerations in the field: she discovered that the lymphatic vessel route, the network that runs in parallel with the blood vessels, is critical for removing cholesterol from multiple tissues, including the aortic wall...
March 2016: Future Science OA
https://www.readbyqxmd.com/read/28028967/angiogenesis-in-cd5-positive-diffuse-large-b-cell-lymphoma-a-morphometric-analysis
#9
Nina Woźnialis, Beata Gierej, Lidia Popławska, Mateusz Ziarkiewicz, Ewa Wolińska, Elżbieta Kulczycka, Bogna Ziarkiewicz-Wróblewska
BACKGROUND: CD5-positive diffuse large B cell lymphoma (DLBCL) is the least frequent immunohistochemical subgroup of DLBCL. The relatively little available data suggests a worse outcome in this population, resulting from a resistance to chemotherapy. OBJECTIVES: The aim was the comparative assessment of angiogenesis in both CD5-positive and CD5-negative DLBCL, as well as in lymphatic tissues without lymphoproliferative diseases. MATERIAL AND METHODS: The analysis included 36 cases of CD5-positive DLBCL (19 females and 17 males) aged 29-87 years (mean age 69), diagnosed and treated in the Maria Sklodowska-Curie Institute and Oncology Center and Medical University of Warsaw in 2002-2013...
November 2016: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/28028002/aqueous-outflow-a-continuum-from-trabecular-meshwork-to-episcleral-veins
#10
REVIEW
Teresia Carreon, Elizabeth van der Merwe, Ronald L Fellman, Murray Johnstone, Sanjoy K Bhattacharya
In glaucoma, lowered intraocular pressure (IOP) confers neuroprotection. Elevated IOP characterizes glaucoma and arises from impaired aqueous humor (AH) outflow. Increased resistance in the trabecular meshwork (TM), a filter-like structure essential to regulate AH outflow, may result in the impaired outflow. Flow through the 360° circumference of TM structures may be non-uniform, divided into high and low flow regions, termed as segmental. After flowing through the TM, AH enters Schlemm's canal (SC), which expresses both blood and lymphatic markers; AH then passes into collector channel entrances (CCE) along the SC external well...
December 24, 2016: Progress in Retinal and Eye Research
https://www.readbyqxmd.com/read/28024668/potential-risks-of-maternal-administration-of-mucophylline-on-the-pups-of-albino-rats-during-lactation
#11
Hamida Hamdi, Heba Ali
The present study was undertaken to evaluate the potential risks of the mucolytic and broncholytic drug, Theophylline derivatives (Mucophylline) maternally administered on the pups. The nursing rats orally administered from 1st postpartum day (PPD) to 21th PPD with two different doses 30.83mg/kg (low dose) and 66.61mg/kg (Human equivalent dose (HED)). On the 21th PPD, the postnatal developmental signs, skeletal malformation and the histopathology of neonatal liver, kidney and brain were examined. Our results showed that Mucophylline induced a significant reduction in the neonatal weight and length, delayed, weak and incomplete ossification, wavy ribs and the neonatal liver revealed histopathological changes, pyknotic hepatocytes, cytoplasmic vacuolization, dilated sinusoid and necrotic area...
December 23, 2016: Experimental and Toxicologic Pathology: Official Journal of the Gesellschaft Für Toxikologische Pathologie
https://www.readbyqxmd.com/read/28018713/in-vivo-label-free-lymphangiography-of-cutaneous-lymphatic-vessels-in-human-burn-scars-using-optical-coherence-tomography
#12
Peijun Gong, Shaghayegh Es'haghian, Karl-Anton Harms, Alexandra Murray, Suzanne Rea, Fiona M Wood, David D Sampson, Robert A McLaughlin
We present an automated, label-free method for lymphangiography of cutaneous lymphatic vessels in humans in vivo using optical coherence tomography (OCT). This method corrects for the variation in OCT signal due to the confocal function and sensitivity fall-off of a spectral-domain OCT system and utilizes a single-scattering model to compensate for A-scan signal attenuation to enable reliable thresholding of lymphatic vessels. A segment-joining algorithm is then incorporated into the method to mitigate partial-volume effects with small vessels...
December 1, 2016: Biomedical Optics Express
https://www.readbyqxmd.com/read/27991863/carbohydrate-binding-protein-clec14a-regulates-vegfr-2-and-vegfr-3-dependent-signals-during-angiogenesis-and-lymphangiogenesis
#13
Sungwoon Lee, Seung-Sik Rho, Hyojin Park, Jeong Ae Park, Jihye Kim, In-Kyu Lee, Gou Young Koh, Naoki Mochizuki, Young-Myeong Kim, Young-Guen Kwon
Controlled angiogenesis and lymphangiogenesis are essential for tissue development, function, and repair. However, aberrant neovascularization is an essential pathogenic mechanism in many human diseases, including diseases involving tumor growth and survival. Here, we have demonstrated that mice deficient in C-type lectin family 14 member A (CLEC14A) display enhanced angiogenic sprouting and hemorrhage as well as enlarged jugular lymph sacs and lymphatic vessels. CLEC14A formed a complex with VEGFR-3 in endothelial cells (ECs), and CLEC14A KO resulted in a marked reduction in VEGFR-3 that was concomitant with increases in VEGFR-2 expression and downstream signaling...
December 19, 2016: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/27981731/robotic-salvage-retroperitoneal-and-pelvic-lymph-node-dissection-for-node-only-recurrent-prostate-cancer-technique-and-initial-series
#14
Andre Luis de Castro Abreu, Carlos E S Fay, Daniel Park, David Quinn, Tanya Dorff, John Carpten, Peter Kuhn, Parkash Gill, Fabio Almeida, Inderbir S Gill
OBJECTIVES: To describe the technique of robotic high-extended salvage retroperitoneal and pelvic lymphadenectomy (sRPLND+PLND) for 'node-only' recurrent prostate cancer. MATERIALS AND METHODS: Ten patients underwent robotic sRPLND+PLND (09/2015-03/2016) for 'node-only' recurrent prostate cancer, as identified by carbon-11 acetate PET/CT imaging. Our anatomic template extends from bilateral renal artery/vein cranially up to Cloquet's node caudally, completely excising lymphatic-fatty tissue from aorto-caval and iliac vascular trees; RPLND precedes PLND...
December 15, 2016: BJU International
https://www.readbyqxmd.com/read/27974574/sphingosine-1-phosphate-receptor-1-regulates-the-directional-migration-of-lymphatic-endothelial-cells-in-response-to-fluid-shear-stress
#15
Vinay N Surya, Eleftheria Michalaki, Eva Y Huang, Gerald G Fuller, Alexander R Dunn
The endothelial cells that line blood and lymphatic vessels undergo complex, collective migration and rearrangement processes during embryonic development, and are known to be exquisitely responsive to fluid flow. At present, the molecular mechanisms by which endothelial cells sense fluid flow remain incompletely understood. Here, we report that both the G-protein-coupled receptor sphingosine 1-phosphate receptor 1 (S1PR1) and its ligand sphingosine 1-phosphate (S1P) are required for collective upstream migration of human lymphatic microvascular endothelial cells in an in vitro setting...
December 2016: Journal of the Royal Society, Interface
https://www.readbyqxmd.com/read/27960039/physiological-and-pathophysiological-roles-of-interaction-between-clec-2-and-podoplanin-partners-from-in-utero-to-adulthood
#16
REVIEW
Katsue Suzuki-Inoue, Makoto Osada, Yukio Ozaki
A platelet activation receptor, C-type lectin-like receptor 2 (CLEC-2) has been identified as a receptor for a platelet activating snake venom, rhodocytin. CLEC-2 protein is highly expressed in platelets/megakaryocytes and at lower levels on liver Kupffer cells. Later, podoplanin has been revealed as an endogenous ligand for CLEC-2. Podoplanin is expressed in certain types of tumor cells, fibroblastic reticular cells (FRCs) in lymph nodes, kidney podocytes, and lymphatic endothelial cells, but not in vascular endothelial cells...
December 13, 2016: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/27941161/angiopoietin-tie-signalling-in-the-cardiovascular-and-lymphatic-systems
#17
REVIEW
Lauri Eklund, Jaakko Kangas, Pipsa Saharinen
Endothelial cells that form the inner layer of blood and lymphatic vessels are important regulators of vascular functions and centrally involved in the pathogenesis of vascular diseases. In addition to the vascular endothelial growth factor (VEGF) receptor pathway, the angiopoietin (Ang)-Tie system is a second endothelial cell specific ligand-receptor signalling system necessary for embryonic cardiovascular and lymphatic development. The Ang-Tie system also regulates postnatal angiogenesis, vessel remodelling, vascular permeability and inflammation to maintain vascular homoeostasis in adult physiology...
January 1, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/27916465/hypoxia-inhibits-lymphatic-thoracic-duct-formation-in-zebrafish
#18
Isabelle Ernens, Andrew I Lumley, Lu Zhang, Yvan Devaux, Daniel R Wagner
Hypoxia promotes blood vessel growth through up-regulation of pro-angiogenic pathways but its role on the lymphatic system remains unclear. The homeobox transcription factor Prox1 is a master control gene for generating lymphatic endothelial cells (LECs) and is up-regulated by hypoxia-inducible factors in mammals. While vascular endothelial growth factor A (VEGFA) is critical for angiogenesis, VEGFC and its receptor VEGF receptor-3 (VEGFR-3) are essential for the initial sprouting and directed migration as well as for the subsequent survival of LECs...
January 22, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/27899779/-two-resected-cases-with-superficial-basaloid-squamous-carcinoma-of-the-esophagus
#19
Mamiko Takii, Masashi Takemura, Nobuaki Kaibe, Tsutomu Ohshima, Syojirou Kikuchi, Mitsuru Sasako
We report 2 resected cases of superficial type basaloid squamous cell carcinoma of the esophagus. Case 1 is a 67-year-old man who underwent endoscopic submucosalresection for superficialel evated type esophagealcancer of the middle thoracic esophagus. Because the pathological diagnosis of the resected specimen was basaloid squamous cell carcinoma invading to the submucosal layer with lymphatic vessel invasion, esophagectomy was indicated. The resected specimens showed no tumor in the esophagus. However, metastasis was diagnosed in the dissected mediastinall ymph nodes...
November 2016: Gan to Kagaku Ryoho. Cancer & Chemotherapy
https://www.readbyqxmd.com/read/27895822/linagliptin-alleviates-fatty-liver-disease-in-diabetic-db-db-mice
#20
Svetlana V Michurina, Irina Ju Ishenko, Vadim V Klimontov, Sergey A Archipov, Natalia E Myakina, Marina A Cherepanova, Eugenii L Zavjalov, Galina V Koncevaya, Vladimir I Konenkov
AIM: To study the effects of linagliptin on the structural signs of non-alcoholic fatty liver disease (NAFLD) in db/db mice. METHODS: Male diabetic db/db mice (BKS.Cg-Dock7(m+)/(+)Lepr(db)/J) aged 10 wk received the dipeptidyl peptidase 4 (DPP4) inhibitor linagliptin (10 mg/kg) or saline as a placebo once per day by gavage for 8 wk. Intact db/db mice served as controls. Structural changes in the liver were analyzed from light and electron microscopic images of sections from intact, placebo-treated and linagliptin-treated animals...
November 15, 2016: World Journal of Diabetes
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