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https://www.readbyqxmd.com/read/28435226/inhibition-of-lymphangiogenesis-in-vitro-and-in-vivo-by-the-multikinase-inhibitor-nintedanib
#1
Tong Lin, Lan Gong
PURPOSE: To investigate the feasibility of nintedanib, a novel triple angiokinase inhibitor, for inhibiting lymphatic endothelial cell (LEC)-induced lymphangiogenesis in vitro and inflammatory corneal lymphangiogenesis in vivo. MATERIALS AND METHODS: Methylthiazolyldiphenyl-tetrazolium bromide (MTT) test, transwell system, and tube-formation assay were used to evaluate the effects of nintedanib on the proliferation, migration, and tube formation of LECs stimulated by vascular endothelial growth factor-C (VEGF-C), basic fibroblast growth factor (bFGF), or platelet-derived growth factor-BB (PDGF-BB)...
2017: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/28424337/physical-and-chemical-gradients-in-the-tumor-microenvironment-regulate-tumor-cell-invasion-migration-and-metastasis
#2
Madeleine J Oudin, Valerie M Weaver
Cancer metastasis requires the invasion of tumor cells into the stroma and the directed migration of tumor cells through the stroma toward the vasculature and lymphatics where they can disseminate and colonize secondary organs. Physical and biochemical gradients that form within the primary tumor tissue promote tumor cell invasion and drive persistent migration toward blood vessels and the lymphatics to facilitate tumor cell dissemination. These microenvironment cues include hypoxia and pH gradients, gradients of soluble cues that induce chemotaxis, and ions that facilitate galvanotaxis, as well as modifications to the concentration, organization, and stiffness of the extracellular matrix that produce haptotactic, alignotactic, and durotactic gradients...
April 19, 2017: Cold Spring Harbor Symposia on Quantitative Biology
https://www.readbyqxmd.com/read/28410495/local-induction-of-lymphangiogenesis-with-engineered-fibrin-binding-vegf-c-promotes-wound-healing-by-increasing-immune-cell-trafficking-and-matrix-remodeling
#3
Esra Güç, Priscilla S Briquez, Didier Foretay, Manuel A Fankhauser, Jeffrey A Hubbell, Witold W Kilarski, Melody A Swartz
Lymphangiogenesis occurs in inflammation and wound healing, yet its functional roles in these processes are not fully understood. Consequently, clinically relevant strategies for therapeutic lymphangiogenesis remain underdeveloped, particularly using growth factors. To achieve controlled, local capillary lymphangiogenesis with protein engineering and determine its effects on fluid clearance, leukocyte trafficking, and wound healing, we developed a fibrin-binding variant of vascular endothelial growth factor C (FB-VEGF-C) that is slowly released upon demand from infiltrating cells...
July 2017: Biomaterials
https://www.readbyqxmd.com/read/28408396/novel-role-of-immature-myeloid-cells-in-formation-of-new-lymphatic-vessels-associated-with-inflammation-and-tumors
#4
REVIEW
Sophia Ran, Andrew Wilber
Inflammation triggers an immune cell-driven program committed to restoring homeostasis to injured tissue. Central to this process is vasculature restoration, which includes both blood and lymphatic networks. Generation of new vessels or remodeling of existing vessels are also important steps in metastasis-the major cause of death for cancer patients. Although roles of the lymphatic system in regulation of inflammation and cancer metastasis are firmly established, the mechanisms underlying the formation of new lymphatic vessels remain a subject of debate...
April 13, 2017: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/28396439/structural-basis-of-tie2-activation-and-tie2-tie1-heterodimerization
#5
Veli-Matti Leppänen, Pipsa Saharinen, Kari Alitalo
The endothelial cell (EC)-specific receptor tyrosine kinases Tie1 and Tie2 are necessary for the remodeling and maturation of blood and lymphatic vessels. Angiopoietin-1 (Ang1) growth factor is a Tie2 agonist, whereas Ang2 functions as a context-dependent agonist/antagonist. The orphan receptor Tie1 modulates Tie2 activation, which is induced by association of angiopoietins with Tie2 in cis and across EC-EC junctions in trans Except for the binding of the C-terminal angiopoietin domains to the Tie2 ligand-binding domain, the mechanisms for Tie2 activation are poorly understood...
April 10, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28395729/a-novel-perivascular-cell-population-in-the-zebrafish-brain
#6
Marina Venero Galanternik, Daniel Castranova, Aniket V Gore, Nathan H Blewett, Hyun Min Jung, Amber N Stratman, Martha R Kirby, James Iben, Mayumi F Miller, Koichi Kawakami, Richard J Maraia, Brant M Weinstein
The blood-brain barrier is essential for the proper homeostasis and function of the CNS, but its mechanism of function is poorly understood. Perivascular cells surrounding brain blood vessels are thought to be important for blood-brain barrier establishment, but their roles are not well defined. Here, we describe a novel perivascular cell population closely associated with blood vessels on the zebrafish brain. Based on similarities in their morphology, location, and scavenger behavior, these cells appear to be the zebrafish equivalent of cells variably characterized as Fluorescent Granular Perithelial cells (FGPs), perivascular macrophages, or 'Mato Cells' in mammals...
April 11, 2017: ELife
https://www.readbyqxmd.com/read/28393881/tranilast-induced-stress-alleviation-in-solid-tumors-improves-the-efficacy-of-chemo-and-nanotherapeutics-in-a-size-independent-manner
#7
Panagiotis Papageorgis, Christiana Polydorou, Fotios Mpekris, Chrysovalantis Voutouri, Eliana Agathokleous, Constantina P Kapnissi-Christodoulou, Triantafyllos Stylianopoulos
Accumulation of mechanical stresses during cancer progression can induce blood and lymphatic vessel compression, creating hypo-perfusion, hypoxia and interstitial hypertension which decrease the efficacy of chemo- and nanotherapies. Stress alleviation treatment has been recently proposed to reduce mechanical stresses in order to decompress tumor vessels and improve perfusion and chemotherapy. However, it remains unclear if it improves the efficacy of nanomedicines, which present numerous advantages over traditional chemotherapeutic drugs...
April 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28381169/the-role-of-sphingosine-1-phosphate-in-the-tumor-microenvironment-and-its-clinical-implications
#8
REVIEW
Masato Nakajima, Masayuki Nagahashi, Omar M Rashid, Kazuaki Takabe, Toshifumi Wakai
Elucidating the interaction between cancer and non-cancer cells, such as blood vessels, immune cells, and other stromal cells, in the tumor microenvironment is imperative in understanding the mechanisms underlying cancer progression and metastasis, which is expected to lead to the development of new therapeutics. Sphingosine-1-phosphate is a bioactive lipid mediator that promotes cell survival, proliferation, migration, angiogenesis/lymphangiogenesis, and immune responsiveness, which are all factors involved in cancer progression...
April 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28378806/fibroblast-growth-factor-2-drives-and-maintains-progressive-corneal-neovascularization-following-hsv-1-infection
#9
H R Gurung, M M Carr, K Bryant, A J Chucair-Elliott, D Jj Carr
Herpes simplex virus type 1 (HSV-1) infection of the cornea induces vascular endothelial growth factor A (VEGF-A)-dependent lymphangiogenesis that continues to develop well beyond the resolution of infection. Inflammatory leukocytes infiltrate the cornea and have been implicated to be essential for corneal neovascularization, an important clinically relevant manifestation of stromal keratitis. Here we report that cornea infiltrating leukocytes including neutrophils and T cells do not have a significant role in corneal neovascularization past virus clearance...
April 5, 2017: Mucosal Immunology
https://www.readbyqxmd.com/read/28378237/successful-ablation-of-lymph-nodes-using-irreversible-electroporation-ire-in-a-porcine-survival-model
#10
Stefan Fritz, Christof M Sommer, Thomas Longerich, Clemens Kuhn-Neureuther, Boris Radeleff, Jens Werner, Thilo Hackert
BACKGROUND: Irreversible electroporation (IRE), a nonthermal injury ablation technique, has been shown to be effective and safe in various organs, such as in the kidney, liver, prostate, or in pancreas. In contrast to radiofrequency or microwave ablation, IRE is also effective in the neighborhood of major vessels. Many human cancers reveal lymphatic spread. The present study aimed to evaluate technical feasibility and safety of IRE in lymphatic tissue. To our knowledge, this is the first report showing successful IRE of lymph nodes in a standardized porcine survival model...
April 4, 2017: Langenbeck's Archives of Surgery
https://www.readbyqxmd.com/read/28374102/predictive-significance-of-tumor-depth-and-budding-for-late-lymph-node-metastases-in-patients-with-clinical-n0-early-oral-tongue-carcinoma
#11
Yukiko Hori, Akira Kubota, Tomoyuki Yokose, Madoka Furukawa, Takeshi Matsushita, Morihito Takita, Sachiyo Mitsunaga, Nobutaka Mizoguchi, Tetsuo Nonaka, Yuko Nakayama, Nobuhiko Oridate
In clinical N0 early oral tongue carcinoma, treatment of occult lymph node metastasis is controversial. The purpose of this study was to assess the histopathological risk factors for predicting late lymph node metastasis in early oral tongue carcinoma. We retrospectively reviewed 48 patients with early oral tongue squamous cell carcinoma. Associations between the histopathological factors (depth of tumor, differentiation, blood vessel invasion, lymphatic invasion, and tumor budding) and late lymph metastasis were analyzed...
April 3, 2017: Head and Neck Pathology
https://www.readbyqxmd.com/read/28369440/extravillous-trophoblast-invasion-of-venous-as-well-as-lymphatic-vessels-is-altered-in-idiopathic-recurrent-spontaneous-abortions
#12
Karin Windsperger, Sabine Dekan, Sophie Pils, Carsten Golletz, Victoria Kunihs, Christian Fiala, Glen Kristiansen, Martin Knöfler, Jürgen Pollheimer
STUDY QUESTION: Do extravillous trophoblasts (EVTs) invade non-arterial decidual vessels in healthy and pathological pregnancies? SUMMARY ANSWER: Our results reveal that trophoblast invasion of venous and lymphatic vessels is a frequent event during the first trimester of pregnancy and is compromised in  recurrent spontaneous abortion (RSA). In addition, the present data suggest that EVTs populate regional lymph nodes during pregnancy. WHAT IS ALREADY KNOWN: Human trophoblasts remodel and invade decidual spiral arteries...
March 28, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28333941/phenotypically-heterogeneous-podoplanin-expressing-cell-populations-are-associated-with-the-lymphatic-vessel-growth-and-fibrogenic-responses-in-the-acutely-and-chronically-infarcted-myocardium
#13
Maria Cimini, Antonio Cannatá, Gianandrea Pasquinelli, Marcello Rota, Polina Goichberg
Cardiac lymphatic vasculature undergoes substantial expansion in response to myocardial infarction (MI). However, there is limited information on the cellular mechanisms mediating post-MI lymphangiogenesis and accompanying fibrosis in the infarcted adult heart. Using a mouse model of permanent coronary artery ligation, we examined spatiotemporal changes in the expression of lymphendothelial and mesenchymal markers in the acutely and chronically infarcted myocardium. We found that at the time of wound granulation, a three-fold increase in the frequency of podoplanin-labeled cells occurred in the infarcted hearts compared to non-operated and sham-operated counterparts...
2017: PloS One
https://www.readbyqxmd.com/read/28323646/endothelial-cells-and-lymphatics-at-the-interface-between-the-immune-and-central-nervous-systems-implications-for-multiple-sclerosis
#14
Céline Meyer, Guillaume Martin-Blondel, Roland S Liblau
PURPOSE OF REVIEW: The central nervous system (CNS) has a unique relationship with the immune system. This review highlights the distinct roles of lymphatic vessels and endothelial cells in the interface between CNS and immune cells and invites to revisit the concept of CNS immune privilege. RECENT FINDINGS: T cells can follow several routes to penetrate the CNS parenchyma but may also benefit, together with antigen-loaded presenting cells, from the newly described lymphatic network to exit the CNS...
March 18, 2017: Current Opinion in Neurology
https://www.readbyqxmd.com/read/28318074/perforating-and-deep-lymphatic-vessels-in-the-knee-region-an-anatomical-study-and-clinical-implications
#15
Wei-Ren Pan, Fan-Qiang Zeng, De-Guang Wang, Zhi-Qiang Qiu
BACKGROUND: To determine the relationship between the perforating and deep lymphatic vessels in the knee region for clinical implications. METHODS: Four lower limbs from two unembalmed human cadavers were used. Under a surgical microscope, 6% hydrogen peroxide was employed to detect lymph vessels accompanying the small saphenous vein, anterior tibial, posterior tibial and fibular blood vessels all commencing from distal ends of specimens. Each lymphatic vessel was inserted by a 30-gauge needle and injected with a barium sulphate mixture...
March 20, 2017: ANZ Journal of Surgery
https://www.readbyqxmd.com/read/28301852/high-fat-diet-in-the-absence-of-obesity-does-not-aggravate-surgically-induced-lymphoedema-in-mice
#16
Epameinondas Gousopoulos, Sinem Karaman, Steven T Proulx, Kristin Leu, Dorina Buschle, Michael Detmar
BACKGROUND: Lymphoedema represents the cardinal manifestation of lymphatic dysfunction and is associated with expansion of the adipose tissue in the affected limb. In mice, high-fat diet (HFD)-induced obesity was associated with impaired collecting lymphatic vessel function, and adiposity aggravated surgery-induced lymphoedema in a mouse model. The aim of the current study was to investigate whether adiposity is necessary to impair lymphatic function or whether increased lipid exposure alone might be sufficient in a surgical lymphoedema model...
2017: European Surgical Research. Europäische Chirurgische Forschung. Recherches Chirurgicales Européennes
https://www.readbyqxmd.com/read/28297758/-role-of-master-transcriptional-factor-prox-1-in-lymphatic-endothelial-differentiation-of-kaposiform-hemangioendothelioma
#17
Z Y Ke, S J Yang
Objective: To analyze the clinical and pathological features of Kaposiform hemangioendothelioma (KHE), and to investigate the role of master transcriptional factor Prox-1 in the regulation of lymphatic differentiation. Methods: Nine cases of KHE (during the period from October 2009 to June 2016) were collected with clinical and pathological data. H&E stained section review and immunohistochemietry using the Dako EnVision method were performed. Results: There were 6 female and 3 male patients with age ranging from 2 months to 8 years (median 3 years and 4 months)...
March 8, 2017: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
https://www.readbyqxmd.com/read/28288772/first-report-of-vascular-invasion-of-demodex-mites-with-thrombi-and-dissemination-to-visceral-lymph-nodes-in-a-dog
#18
Moges Woldemeskel, Ian Hawkins
An adult-onset generalized canine demodecosis is a life threatening form of demodecosis often seen in immunocompromised dogs. A generalized, adult-onset canine demodecosis with an unusual vascular invasion, thrombi and dissemination to peripheral, and visceral lymph nodes was diagnosed in an adult, female, American Bulldog of unknown age. Organized thrombi with intralesional mites were observed in multiple lymphatic vessels and in a section of blood vessel. Vascular invasion of mites with dissemination of mites into visceral lymph nodes, is an unusual findings not previously recorded in canine generalized demodecosis...
March 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28287740/mediating-passive-tumor-accumulation-through-particle-size-tumor-type-and-location
#19
Jillian L Perry, Kevin G Reuter, J Christopher Luft, Chad V Pecot, William C Zamboni, Joseph M DeSimone
As the enhanced permeation and retention (EPR) effect continues to be a controversial topic in nanomedicine, we sought to examine EPR as a function of nanoparticle size, tumor model and tumor location, while also evaluating tumors for EPR mediating factors such as microvessel density, vascular permeability, lymphatics, stromal content, and tumor associated immune cells. Tumor accumulation was evaluated for 55x60 nm, 80x180 nm, and 80x320 nm PRINT particles, in four subcutaneous flank tumor models (SKOV3 human ovarian, 344SQ murine non-small cell lung, A549 human non-small cell lung, and A431 human epidermoid cancer)...
March 13, 2017: Nano Letters
https://www.readbyqxmd.com/read/28287513/an-ex-vivo-method-for-time-lapse-imaging-of-cultured-rat-mesenteric-microvascular-networks
#20
Mohammad S Azimi, Jessica M Motherwell, Walter L Murfee
Angiogenesis, defined as the growth of new blood vessels from pre-existing vessels, involves endothelial cells, pericytes, smooth muscle cells, immune cells, and the coordination with lymphatic vessels and nerves. The multi-cell, multi-system interactions necessitate the investigation of angiogenesis in a physiologically relevant environment. Thus, while the use of in vitro cell-culture models have provided mechanistic insights, a common critique is that they do not recapitulate the complexity associated with a microvascular network...
February 9, 2017: Journal of Visualized Experiments: JoVE
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