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https://www.readbyqxmd.com/read/28230794/structural-determinant-and-its-underlying-molecular-mechanism-of-stpc2-related-to-anti-angiogenic-activity
#1
Min Hu, Ning Cui, Zhixiang Bo, Feixiang Xiang
In this study, we aimed to use different strategies to further uncover the anti-angiogenic molecular mechanism of a fucoidan-like polysaccharide STPC2, isolated from brown alga Sargassum thunbergii. A desulfated derivative, STPC2-DeS, was successfully prepared and identified. The native polysaccharide and desulfated product were subjected to evaluate their anti-angiogenic effects. In the tube formation assay, STPC2 showed dose-dependent inhibition. In addition, STPC2 could distinctly inhibit the permeation of HUVEC cells into the lower chamber...
February 21, 2017: Marine Drugs
https://www.readbyqxmd.com/read/28228013/highly-efficient-and-safe-delivery-of-vegf-sirna-by-bio-reducible-fluorinated-peptide-dendrimers-for-cancer-therapy
#2
Xiaojun Cai, Haofang Zhu, Yanmei Zhang, Zhongwei Gu
RNA interference (RNAi) hold great promise in treating a wide range of diseases. However, it remains highly desirable to develop new delivery systems to circumvent complex extra- and intracellular barriers for successful clinical translation. Here, we report on a versatile polymeric vector, bio-reducible fluorinated peptide dendrimers (BFPD), for highly efficient and safe delivery of siRNA. In virtue of skillfully integrated all of the unique features of reversible cross-linking, fluorination and peptide dendrimers, this novel vector can surmount almost all extra- and intracellular barriers associated with local siRNA delivery through highly improved physiological stability and serum resistance, significantly increased intratumoral enrichment, cellular uptake, as well as successful facilitation of endosomal escape and cytosolic siRNA release...
February 23, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28226388/-can-anti-vegf-injections-cause-glaucoma-or-ocular-hypertension
#3
I Lanzl, K Kotliar
An increasing number of patients receive intravitreal anti-vascular endothelial growth factor (anti-VEGF) injections with a high frequency for the treatment of neovascular macular disease. Since the volume of the vitreous body is temporarily increased by the injection of the substances, a short-term intraocular pressure increase after the introduction of the substance is not uncommon. However, there are more and more reports indicating that multiple injections may lead to a long-term increase in intraocular pressure...
February 2017: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/28225371/measurement-of-perceived-stress-in-age-related-macular-degeneration
#4
Bradley E Dougherty, San-San L Cooley, Frederick H Davidorf
PURPOSE: To validate the Perceived Stress Scale (PSS) in patients with age-related macular degeneration (AMD) using Rasch analysis. METHODS: Study participants with AMD were recruited from the retina service of the Department of Ophthalmology at the Ohio State University during clinical visits for treatment or observation. Visual acuity with habitual distance correction was assessed. A 10-item version of the PSS was administered in large print or by reading the items to the patient...
March 2017: Optometry and Vision Science: Official Publication of the American Academy of Optometry
https://www.readbyqxmd.com/read/28224821/lenvatinib-for-use-in-combination-with-everolimus-for-the-treatment-of-patients-with-advanced-renal-cell-carcinoma-following-one-prior-anti-angiogenic-therapy
#5
Aine O'Reilly, James Larkin
In patients with mRCC options for second line therapies, following progression on anti-angiogenic agents, that demonstrate a survival advantage in clinical trials have been limited. Recently a number of agents have demonstrated efficacy in this setting. Here in we profile one such therapy, the combination of lenvatinib and everolimus, and discuss the expanded options for therapy available in this setting. Areas covered: In this review, we discuss current algorithms for treatment of mRCC in both the first-line and second-line setting...
March 2017: Expert Review of Clinical Pharmacology
https://www.readbyqxmd.com/read/28222445/blocking-il-17a-alleviates-diabetic-retinopathy-in-rodents
#6
Ao-Wang Qiu, Qing-Huai Liu, Jun-Ling Wang
BACKGROUND/AIMS: Interleukin (IL)-17A, a proinflammatory cytokine, has been implicated in several autoimmune diseases. However, it is unclear whether IL-17A is involved in diabetic retinopathy (DR), one of the most serious complications of autoimmune diabetes. This study aimed to demonstrate that IL-17A exacerbates DR by affecting retinal Müller cell function. METHODS: High glucose (HG)-treated rat Müller cell line (rMC-1) was exposed to IL-17A, anti-IL-17A-neutralizing monoclonal antibody (mAb) or/and anti-IL-17 receptor (R)A-neutralizing mAb for 24 h...
February 21, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28220476/response-of-trabecular-bone-thyroid-c-and-follicular-cells-to-synthetic-salmon-calcitonin-in-middle-aged-orchidectomized-male-rats
#7
Branko Filipović, Branka Šošić-Jurjević, Vladimir Ajdžanović, Jasmina Živanović, Nataša Ristić, Svetlana Trifunović, Verica Milošević
In contrast to studies in women, male osteoporosis is poorly understood and strictly related to advancing age. Among the first antiresorptive substances used in the prevention and treatment of osteoporosis is calcitonin (CT), a hypocalcemic hormone that potently inhibits osteoclastic bone resorption. Natural CT is produced and secreted by thyroid C-cells. The other endocrine population of thyroid cells produces thyroid hormones (TH), which also affect bone turnover. The aim of this study was to evaluate the influence of salmon CT on trabecular bone microarchitecture with special reference to effects on the structure and function of both CT- and TH-producing thyroid cells in orchidectomized (Orx) middle-aged rats...
February 20, 2017: Journal of Anatomy
https://www.readbyqxmd.com/read/28220249/-adjuvant-radiotherapy-during-anti-vegf-in-neovascular-age-related-macular-degeneration
#8
P Rating, M-A Freimuth, M Stuschke, N Bornfeld
Single adjuvant radiotherapy during anti-VEGF therapy could be in certain indications an alternative to the gold standard of sole intravitreal anti-VEGF drug injection in neovascular age-related macular degeneration. First clinical trials showed efficacy due to reduction of anti-VEGF injection numbers by 100 kV collimated beam radiotherapy. After consideration and performance of adjuvant radiotherapy, results of the course should be centrally registered in order to carry out further analysis.
February 20, 2017: Der Ophthalmologe: Zeitschrift der Deutschen Ophthalmologischen Gesellschaft
https://www.readbyqxmd.com/read/28218903/macrophage-migration-inhibitory-factor-downregulation-a-novel-mechanism-of-resistance-to-anti-angiogenic-therapy
#9
B A Castro, P Flanigan, A Jahangiri, D Hoffman, W Chen, R Kuang, M De Lay, G Yagnik, J R Wagner, S Mascharak, M Sidorov, S Shrivastav, G Kohanbash, H Okada, M K Aghi
Anti-angiogenic therapies for cancer such as VEGF neutralizing antibody bevacizumab have limited durability. While mechanisms of resistance remain undefined, it is likely that acquired resistance to anti-angiogenic therapy will involve alterations of the tumor microenvironment. We confirmed increased tumor-associated macrophages in bevacizumab-resistant glioblastoma patient specimens and two novel glioblastoma xenograft models of bevacizumab resistance. Microarray analysis suggested downregulated macrophage migration inhibitory factor (MIF) to be the most pertinent mediator of increased macrophages...
February 20, 2017: Oncogene
https://www.readbyqxmd.com/read/28218367/author-s-reply-to-comments-to-clinical-experience-of-switching-anti-vegf-therapy-from-ranimizumab-to-aflibercept-in-age-related-choroidal-neovascularization
#10
George Kampougeris
No abstract text is available yet for this article.
February 13, 2017: European Journal of Ophthalmology
https://www.readbyqxmd.com/read/28216876/wheatgrass-extract-ameliorates-hypoxia-induced-mucin-gene-expression-in-a549-cells
#11
Ju Hwan Sim, Moon-Hee Choi, Hyun-Jae Shin, Ji-Eun Lee
BACKGROUND: Wheatgrass is known to have antioxidant, antiaging, and anti-inflammatory effect. However, its protective effect against hypoxia is not yet evaluated. OBJECTIVE: In this study, we evaluated the protective and anti-inflammatory effect of wheatgrass against the hypoxia in airway epithelial cells. MATERIALS AND METHODS: A549 human lung adenocarcinoma cells were incubated in a hypoxic condition (CO2 5%/O2 1%) for 24 hr in the presence of different concentration of wheatgrass 50, 75, 100, and 150 μg/mL, and the magnitude of each immunologic response produced by the A549 cells was compared...
January 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/28216250/biotransfomation-of-cyperenoic-acid-by-cunninghamella-elegans-as-3-2028-and-the-potent-anti-angiogenic-activities-of-its-metabolites
#12
Yu Chen, Jin-Long Tian, Jing-Shuai Wu, Tie-Min Sun, Li-Na Zhou, Shao-Jiang Song, Song You
Cyperenoic acid (1) is one of the major sesquiterpenes isolated from Croton crassifolius, which exhibited potent anti-angiogenic activity. Traditional structural modification of 1 is difficult to perform by chemical technology due to the remarkable stability of the patchoulane skeleton. In order to overcome chemical synthesis difficulties and obtain structurally diverse derivations, microbial transformation of 1 by using Cunninghamella elegans AS 3.2028 was studied for the first time. Five new hydroxylated products 2-6 were obtained...
February 16, 2017: Fitoterapia
https://www.readbyqxmd.com/read/28213365/fda-approval-summary-tas-102
#13
Leigh Marcus, Steven J Lemery, Sachia Khasar, Emily Wearne, Whitney S Helms, Weishi Yuan, Kun He, Xianhua Cao, Jingyu Yu, Hong Zhao, Yaning Wang, Olen Stephens, Erika Englund, Rajiv Agarwal, Patricia Keegan, Richard Pazdur
FDA approved TAS-102 (Lonsurf, Taiho Oncology, Inc.) for the treatment of patients with metastatic colorectal cancer (mCRC) who have been previously treated with fluoropyrimidine-, oxaliplatin- and irinotecan-based chemotherapy, an anti-VEGF biological therapy, and if RAS wild-type, an anti-EGFR therapy. In an international, multicenter, double-blinded, placebo-controlled trial (TPU-TAS-102-301, herein referred to as RECOURSE), 800 patients with previously treated mCRC were randomly allocated (2:1) to receive either TAS-102 35mg/m2 orally twice daily after meals on Days 1-5 and 8-12 of each 28-day cycle (n=534) or matching placebo (n=266)...
February 17, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28213094/aspirin-triggered-resolvin-d1-modified-materials-promote-the-accumulation-of-pro-regenerative-immune-cell-subsets-and-enhance-vascular-remodeling
#14
Mary Caitlin P Sok, Maxianne C Tria, Claire E Olingy, Cheryl L San Emeterio, Edward A Botchwey
: Many goals in tissue engineering rely on modulating cellular localization and polarization of cell signaling, including the inhibition of inflammatory infiltrate, facilitation of inflammatory cell egress, and clearance of apoptotic cells. Omega-3 polyunsaturated fatty acid-derived resolvins are gaining increasing recognition for their essential roles in inhibition of neutrophil invasion into inflamed tissue and promotion of macrophage phagocytosis of cellular debris as well as their egress to the lymphatics...
February 14, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28212521/angiogenesis-in-the-atherosclerotic-plaque
#15
REVIEW
Caroline Camaré, Mélanie Pucelle, Anne Nègre-Salvayre, Robert Salvayre
Atherosclerosis is a multifocal alteration of the vascular wall of medium and large arteries characterized by a local accumulation of cholesterol and non-resolving inflammation. Atherothrombotic complications are the leading cause of disability and mortality in western countries. Neovascularization in atherosclerotic lesions plays a major role in plaque growth and instability. The angiogenic process is mediated by classical angiogenic factors and by additional factors specific to atherosclerotic angiogenesis...
February 1, 2017: Redox Biology
https://www.readbyqxmd.com/read/28212293/targeting-angiogenesis-in-biliary-tract-cancers-an-open-option
#16
REVIEW
Valeria Simone, Oronzo Brunetti, Luigi Lupo, Mario Testini, Eugenio Maiorano, Michele Simone, Vito Longo, Christian Rolfo, Marc Peeters, Aldo Scarpa, Amalia Azzariti, Antonio Russo, Domenico Ribatti, Nicola Silvestris
Biliary tract cancers (BTCs) are characterized by a bad prognosis and the armamentarium of drugs for their treatment is very poor. Although the inflammatory status of biliary tract represents the first step in the cancerogenesis, the microenvironment also plays a key role in the pathogenesis of BTCs, promoting tumor angiogenesis, invasion and metastasis. Several molecules, such as vascular endothelial growth factor (VEGF) and fibroblast growth factor (FGF), are involved in the angiogenesis process and their expression on tumor samples has been explored as prognostic marker in both cholangiocarcinoma and gallbladder cancer...
February 15, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28209257/synthesis-and-evaluation-of-n-benzofuran-5-yl-aromaticsulfonamide-derivatives-as-novel-hif-1-inhibitors-that-possess-anti-angiogenic-potential
#17
Jinlian Wei, Yingrui Yang, Yali Li, Xiaofei Mo, Xiaoke Guo, Xiaojin Zhang, Xiaoli Xu, Zhengyu Jiang, Qidong You
Hypoxia-inducible factor-1 (HIF-1) as a key mediator in tumor metastasis, angiogenesis, and poor patient prognosis has been recognized as an important cancer drug target. A novel series of N-(benzofuran-5-yl)aromaticsulfonamide derivatives were synthesized and evaluated as HIF-1 inhibitor. Among these compounds, 7q exhibited specific inhibitory effects on HIF-1 by downregulating the expression of HIF-1α under hypoxic conditions. It inhibited the HIF-1 transcriptional activity (IC50=12.5±0.7μM) and secretion of VEGF (IC50=18...
June 11, 2016: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/28209068/urinary-cytokines-chemokines-after-magnetic-resonance-guided-high-intensity-focused-ultrasound-for-palliative-treatment-of-painful-bone-metastases
#18
Ahmad Bushehri, Gregory Czarnota, Liying Zhang, Kullervo Hynynen, Yuexi Huang, Michael Chan, William Chu, Kristopher Dennis, Charles Mougenot, Jennifer Coccagna, Arjun Sahgal, Edward Chow, Carlo DeAngelis
BACKGROUND: Pain is experienced by 50-75% of patients with bone metastases, representing a major source of morbidity amongst cancer patients. Magnetic resonance-guided high intensity focused ultrasound (MRgHIFU) is a new, non-invasive, outpatient treatment modality for painful bone metastases. The aim of this study was to analyze urinary cytokines/chemokines pattern after MRgHIFU for palliative treatment of painful bone metastases. The findings were compared to the cytokines/chemokines pattern post single 8 Gy fraction radiation from our previous study...
January 2017: Annals of Palliative Medicine
https://www.readbyqxmd.com/read/28208844/spectrum-of-factors-triggering-endothelial-dysfunction-in-pih
#19
Visala Sree Jammalamadaga, Philips Abraham
INTRODUCTION: Pre-eclampsia (PE) is a major cause of maternal and fetal/neonatal mortality and morbidity. The aetiology and pathogenesis of PE is yet to be completely understood. Evidence shows that, Endothelial Dysfunction (ED) plays a pivotal role in the genesis of this multi-system disorder that develops in PE and eclampsia. AIM: To determine the circulating levels of factors Malondialdehyde (MDA), Ferric Reducing Ability of Plasma-α (FRAP), Tumour Necrosis Factor (TNF-α), sFlt-1, VEGF, PlGF, Nitric Oxide (NO) that influence the ED...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28203470/unusual-presentation-of-type-1-idiopathic-macular-telangiectasia
#20
Zaïnab Bentaleb Machkour, Philippe Denis, Laurent Kodjikian
Purpose. To report unusual presentation of type 1A idiopathic macular telangiectasia (IMT). Methods. Two middle-aged women with bilateral IMT were examined. Results. Both patients presented with a gradual vision loss in both eyes. Fundus examination was unremarkable in one case and showed small macular telangiectasia in both eyes in the other case. Fluorescein angiography (FA) revealed early bilateral macular punctuated hyperfluorescence corresponding to the dilated capillaries in both cases. FA and fundus examination confirmed also the absence of vascular abnormalities in the middle or anterior fundus periphery in one case...
2017: Case Reports in Ophthalmological Medicine
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