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Endothelial cell

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https://www.readbyqxmd.com/read/28723974/alginate-hydrogels-allow-for-bioactive-and-sustained-release-of-vegf-c-and-vegf-d-for-lymphangiogenic-therapeutic-applications
#1
Kevin T Campbell, Dustin J Hadley, David L Kukis, Eduardo A Silva
Lymphatic dysfunction is associated with the progression of many cardiovascular disorders due to their role in maintaining tissue fluid homeostasis. Promoting new lymphatic vessels (lymphangiogenesis) is a promising strategy to reverse these cardiovascular disorders via restoring lymphatic function. Vascular endothelial growth factor (VEGF) members VEGF-C and VEGF-D are both potent candidates for stimulating lymphangiogenesis, though maintaining spatial and temporal control of these factors represents a challenge to developing efficient therapeutic lymphangiogenic applications...
2017: PloS One
https://www.readbyqxmd.com/read/28723729/wnt-signaling-in-cardiovascular-disease-opportunities-and-challenges
#2
Austin Gay, Dwight A Towler
PURPOSE OF REVIEW: Cardiometabolic diseases increasingly afflict our aging, dysmetabolic population. Complex signals regulating low-density lipoprotein receptor-related protein (LRP) and frizzled protein family members - the plasma membrane receptors for the cadre of Wnt polypeptide morphogens - contribute to the control of cardiovascular homeostasis. RECENT FINDINGS: Both canonical (β-catenin-dependent) and noncanonical (β-catenin-independent) Wnt signaling programs control vascular smooth muscle (VSM) cell phenotypic modulation in cardiometabolic disease...
July 18, 2017: Current Opinion in Lipidology
https://www.readbyqxmd.com/read/28723714/vent-incisions-to-facilitate-peripheral-unfolding-of-the-dmek-graft
#3
Christopher Liu, Alfonso Vasquez-Perez, Jordan Vassileff Chervenkoff, Venkata Avadhanam
PURPOSE: To present the results of 15 cases in which a modified technique of Descemet membrane endothelial keratoplasty (DMEK) with vent incisions was used to assist unfolding of tight peripheral inward folds. METHODS: This is a retrospective case series of 15 consecutive eyes that underwent a modified vent incision technique for DMEK. Six oblique, small-size (1 mm) vent incisions parallel to the limbus and 3.5 mm from the center were performed after descemetorhexis...
July 17, 2017: Cornea
https://www.readbyqxmd.com/read/28723696/advanced-glycation-end-products-downregulate-hoxa9ec-through-activation-of-nuclear-factor-kappa-b-by-reciprocal-interaction
#4
Qian-Qian Zhu, Dong-Lin Li, Yang-Yan He, Zi-Heng Wu, Lu Tian, Cheng-Fei Zheng, Nan Zhang, Hong-Kun Zhang
Advanced glycation end-products (AGEs) have been recognized as an important pathophysiological mechanism in endothelial dysfunction during diabetic atherogenesis. Homeobox (Hox) genes have been identified as playing a regulatory role in the adult cardiovascular system. Regulation of HoxA9EC is involved in diabetic endothelial dysfunction, but the mechanism of HoxA9EC regulation has remained undefined. Here, we sought to investigate how HoxA9EC is regulated in AGE-induced endothelial dysfunction and to explore the mechanism involved...
July 20, 2017: Journal of Vascular Research
https://www.readbyqxmd.com/read/28723693/upregulation-of-microrna-876-induces-endothelial-cell-apoptosis-by-suppressing-bcl-xl-in-development-of-atherosclerosis
#5
Kaicheng Xu, Peng Liu, Yue Zhao
BACKGROUND/AIMS: The injury and apoptotic cell death of endothelial cells hallmark the development of atherosclerosis (AS), characterized by dysregulation of lipid homeostasis, immune responses, and formation of coronary plaques. However, the mechanisms underlying the initiation of endothelial cell apoptosis remain ill-defined. Recent evidence suggests a role of microRNAs in the processes of AS-associated endothelial cell apoptosis. Thus, we studied this question in the current study...
July 19, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28723662/acetyl-lupeolic-acid-inhibits-akt-signaling-and-induces-apoptosis-in-chemoresistant-prostate-cancer-cells-in-vitro-and-in-vivo
#6
Claudia Schmidt, Cornelia Loos, Lu Jin, Michael Schmiech, Christoph Q Schmidt, Menna El Gaafary, Tatiana Syrovets, Thomas Simmet
The triterpenoid acetyl-lupeolic acid (ac-LA) isolated from the oleogum resin of Boswellia carterii reduced the viability of a panel of cancer cell lines more efficiently than lupeol. There was no detectable intracellular conversion of ac-LA to lupeol and vice versa. In contrast to docetaxel, ac-LA did not induce selection of treatment-resistant cancer cells. By various parameters including DNA fragmentation, ac-LA was shown to induce apoptosis in androgen-independent PC-3 cells, whereas in MDA-MB-231 breast cancer cells, ac-LA led to cell accumulation in the G2/M phase of the cell cycle, but not to apoptosis...
July 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28723572/robust-identification-of-developmentally-active-endothelial-enhancers-in-zebrafish-using-fans-assisted-atac-seq
#7
Aurelie Quillien, Mary Abdalla, Jun Yu, Jianhong Ou, Lihua Julie Zhu, Nathan D Lawson
Identification of tissue-specific and developmentally active enhancers provides insights into mechanisms that control gene expression during embryogenesis. However, robust detection of these regulatory elements remains challenging, especially in vertebrate genomes. Here, we apply fluorescent-activated nuclei sorting (FANS) followed by Assay for Transposase-Accessible Chromatin with high-throughput sequencing (ATAC-seq) to identify developmentally active endothelial enhancers in the zebrafish genome. ATAC-seq of nuclei from Tg(fli1a:egfp)(y1) transgenic embryos revealed expected patterns of nucleosomal positioning at transcriptional start sites throughout the genome and association with active histone modifications...
July 18, 2017: Cell Reports
https://www.readbyqxmd.com/read/28723489/immunotherapy-for-renal-cancer-sequencing-and-combinations
#8
REVIEW
Grant D Stewart, Maria De Santis, Bernard Escudier, Thomas Powles, Guru Sonpavde
CONTEXT: Current therapy for renal cell carcinoma (RCC) generally consists of the sequential administration of single agent therapy. Given the advent of T-cell checkpoint inhibitors, the role of combinations including these agents is being intensely interrogated. OBJECTIVE: To evaluate ongoing trials of combinations including immunotherapy and sequencing of agents to treat RCC. EVIDENCE ACQUISITION: Recent data and ongoing trials were analyzed to evaluate the direction of research in this arena...
December 15, 2016: European Urology Focus
https://www.readbyqxmd.com/read/28722488/berberine-promotes-ischemia-induced-angiogenesis-in-mice-heart-via-upregulation-of-microrna-29b
#9
Mo-Li Zhu, Ya-Ling Yin, Song Ping, Hai-Ya Yu, Guang-Rui Wan, Xu Jian, Peng Li
BACKGROUND: Berberine has several preventive effects on cardiovascular diseases. Increased expression of miR-29b has been reported to attenuate cardiac remodeling after myocardial infarction (MI). We hypothesized that berberine via an miR-29b-dependent mechanism promotes angiogenesis and improves heart functions in mice after MI. METHODS: The MI model was established in mice by ligation of left anterior descending coronary artery. The expression of miR-29b was examined by RT-qPCR...
July 19, 2017: Clinical and Experimental Hypertension: CHE
https://www.readbyqxmd.com/read/28722174/astrocytes-follow-ganglion-cell-axons-to-establish-an-angiogenic-template-during-retinal-development
#10
Matthew L O'Sullivan, Vanessa M Puñal, Patrick C Kerstein, Joseph A Brzezinski, Tom Glaser, Kevin M Wright, Jeremy N Kay
Immature astrocytes and blood vessels enter the developing mammalian retina at the optic nerve head and migrate peripherally to colonize the entire retinal nerve fiber layer (RNFL). Retinal vascularization is arrested in retinopathy of prematurity (ROP), a major cause of bilateral blindness in children. Despite their importance in normal development and ROP, the factors that control vascularization of the retina remain poorly understood. Because astrocytes form a reticular network that appears to provide a substrate for migrating endothelial cells, they have long been proposed to guide angiogenesis...
July 19, 2017: Glia
https://www.readbyqxmd.com/read/28722137/precise-and-arbitrary-deposition-of-biomolecules-onto-biomimetic-fibrous-matrices-for-spatially-controlled-cell-distribution-and-functions
#11
Chao Jia, Bowen Luo, Haoyu Wang, Yongqian Bian, Xueyong Li, Shaohua Li, Hongjun Wang
Advances in nano-/microfabrication allow the fabrication of biomimetic substrates for various biomedical applications. In particular, it would be beneficial to control the distribution of cells and relevant biomolecules on an extracellular matrix (ECM)-like substrate with arbitrary micropatterns. In this regard, the possibilities of patterning biomolecules and cells on nanofibrous matrices are explored here by combining inkjet printing and electrospinning. Upon investigation of key parameters for patterning accuracy and reproducibility, three independent studies are performed to demonstrate the potential of this platform for: i) transforming growth factor (TGF)-β1-induced spatial differentiation of fibroblasts, ii) spatiotemporal interactions between breast cancer cells and stromal cells, and iii) cancer-regulated angiogenesis...
July 19, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28722102/expression-of-cd34-and-cd146-vascular-markers-contributes-to-the-immunological-function-of-the-human-palatine-tonsil
#12
Marko Jović, Verica Avramović, Predrag Vlahović, Aleksandra Veličkov, Vladimir Petrović
The fundamental function of the palatine tonsil is the immune response to airborne and foodborne pathogenic agents. Small blood vessels have an important role in the provision of a special microenvironment in which the immune response occurs. In this study, we investigated the expression of vascular markers CD34 and CD146 and basal lamina marker - type IV collagen - in the small blood vessels of the human palatine tonsil in the context of their role in the immunological function of the tonsil. The tonsils were collected after tonsillectomy from ten patients with chronic tonsillitis, aged 18-28 years...
July 19, 2017: Histology and Histopathology
https://www.readbyqxmd.com/read/28721991/angiogenesis-concept-in-odontogenic-keratocyst-a-comparative-study
#13
Donia Sadri, Fatemeh Shahsavari, Sareh Farhadi, Zahra Shahabi, Zahra Mehran
CONTEXT: Recent reports have indicated that angiogenesis possibly affects the biologic behavior of the lesions. AIM: Given the different clinical behaviors of odontogenic keratocyst (OKC), the present study was undertaken to evaluate the concept of angiogenesis in pathogenesis and clinical behavior of OKC. SETTING AND DESIGN: This experimental study was carried out on 22 and 24 samples of OKCs and dentigerous cysts (DCs), respectively. METHODS: Immunohistochemical staining was approached using CD34 and vascular endothelial growth factor (VEGF) antibodies...
May 2017: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
https://www.readbyqxmd.com/read/28721809/acellular-spinal-cord-scaffold-implantation-promotes-vascular-remodeling-with-sustained-delivery-of-vegf-in-a-rat-spinal-cord-hemisection-model
#14
Zi-Xing Xu, Li-Qun Zhang, Chang-Sheng Wang, Rong-Sheng Chen, Gui-Shuang Li, Yu Guo, Wei-Hong Xu
: Background: Promoting angiogenesis provides a possible therapeutic approach in treating spinal cord injury (SCI). Vascular endothelial growth fact (VEGF) is a pro-angiogenic substance that involves in endothelial cell (EC) proliferation, migration, and survival. Exogenous administration of VEGF to the lesion epicenter of the spinal cord has been recently revealed as a potential method for promoting the blood vessel sprouting. METHODS: Spinal cord hemisection in a rat model was established and angiogenesis was studied through implant of an acellular spinal cord scaffold (ASCS) with sustained delivery of VEGF165...
July 17, 2017: Current Neurovascular Research
https://www.readbyqxmd.com/read/28721338/is-aortic-aneurysm-preventable
#15
Undurti N Das
Abdominal aortic aneurysm (AAA) is a chronic inflammatory condition, triggered by the local accumulation of macrophages, oxidative stress and damage to the aortic wall. Pro-inflammatory eicosanoids seem to play a significant role in AAA. The pro-inflammatory events seen in AAA could be due to a deficiency of anti-inflammatory eicosanoids such as lipoxin A4 (LXA4), resolvins, protectins and maresins as a result of reduced tissue concentrations of their precursors: arachidonic acid (AA), eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA)...
June 2017: Journal of Translational Internal Medicine
https://www.readbyqxmd.com/read/28721161/repeated-positive-acceleration-exposure-exacerbates-endothelial-dysfunction-in-high-fat-diet-induced-hyperlipidemic-rats
#16
Zhihui Yang, Hua Ge, Chunya Wang, Zhongdong Li, Qingjun Zhang, Jianchang Wang
INTRODUCTION: It remains unclear whether exposure to repeated positive acceleration (+Gz) can exacerbate endothelial dysfunction on the basis of hyperlipidemia. The aim of this study was to investigate the effect of repeated +Gz exposure on endothelial function in high-fat-diet-induced hyperlipidemic rats. MATERIAL AND METHODS: Male Sprague-Dawley rats were randomly divided into control, repeat +Gz exposure, high-fat diet (HFD), and +Gz + HFD groups. The rats in the +Gz group were exposed to +Gz and the rats in the HFD group were fed a diet with 2% cholesterol...
June 2017: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/28721004/epithelium-on-photorefractive-intrastromal-cross-linking-pixl-for-reduction-of-low-myopia
#17
Wee Kiak Lim, Zhi Da Soh, Harold Kah Yen Choi, Julian Thiam Siew Theng
PURPOSE: To report the 9-12-month outcomes of a novel procedure for reduction of low myopia through epithelium-on photorefractive intrastromal cross-linking (PiXL) with customized control of topographic distribution of ultraviolet (UV)-fluence. METHOD: Myopic patients with normal (non-ectatic) corneas underwent the PiXL procedure for reduction of low myopia. PiXL treatments were delivered through selective application of UVA light based on the refractive error of each patient...
2017: Clinical Ophthalmology
https://www.readbyqxmd.com/read/28720900/low-frequency-ultrasound-induced-vegf-suppression-and-synergy-with-dendritic-cell-mediated-anti-tumor-immunity-in-murine-prostate-cancer-cells-in-vitro
#18
Wei Zhang, Wen-De Shou, Yan-Jun Xu, Wen-Kun Bai, Bing Hu
High tumor vascular endothelial growth factor (VEGF) levels are associated with poor treatment outcomes in prostate cancer (PCa), and immune deficiency in the PCa microenvironment, especially suppression of dendritic cell (DC) proliferation, has been confirmed. In this study, we (1) investigated whether VEGF participates in DC suppression in murine PCa cells (RM-1), (2) down-regulated VEGF expression using low-frequency ultrasound and microbubbles (UM), and (3) further explored any synergistic effect on immunological activation...
July 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28720868/adhesion-of-toxoplasma-gondii-tachyzoite-infected-vehicle-leukocytes-to-capillary-endothelial-cells-triggers-timely-parasite-egression
#19
Minami Baba, Tatiana Batanova, Katsuya Kitoh, Yasuhiro Takashima
Intracellular pathogens have numerous strategies for effective dissemination within the host. Many intracellular pathogens first infect leukocytes, which they use as a vehicle to transport them to target organs. Once at the target organ, intracellular parasite Toxoplasma gondii can cross the capillary wall in extracellular form by infecting endothelial cells. However, after egression from leukocytes, extracellular parasites face the risk of host immune attack. In this study, observation of infected mouse organs, using a method that renders tissue transparent, revealed that adhesion of tachyzoite-infected leukocytes to endothelial cells triggers immediate egression of the parasite...
July 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28720509/the-neuropeptide-galanin-promotes-an-anti-thrombotic-phenotype-on-endocardial-endothelial-cells-from-heart-failure-patients
#20
Christina Tyrrell, Amanda Toyooka, Faiza Khan, Kent L Thornburg, James O Mudd, Wohaib Hasan
Thromboembolic complications are a significant cause of mortality and re-hospitalization in heart failure (HF) patients. One source of thrombi is the ventricular endocardial surface that becomes increasingly pro-thrombotic as HF progresses. Anticoagulation comes with bleeding risks so identifying therapeutic agents for improving cardiac endothelial health are of critical clinical importance. Endocardial endothelial cells are closely apposed to cardiac sympathetic nerves. In HF, cardiac sympathetic nerves are dysregulated and promote disease progression...
July 12, 2017: Autonomic Neuroscience: Basic & Clinical
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