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https://www.readbyqxmd.com/read/28339142/selective-effects-of-oral-anti-angiogenic-tyrosine-kinase-inhibitors-on-an-animal-model-of-hereditary-hemorrhagic-telangiectasia
#1
Yong Hwan Kim, Mi-Jung Kim, Se-Woon Choe, Dennis Sprecher, Young Jae Lee, S Paul Oh
BACKGROUND: Epistaxis and gastrointestinal (GI) tract hemorrhages are common symptoms of aged hereditary hemorrhagic telangiectasia (HHT) patients that result in anemia. Clinical as well as animal studies have suggested that vascular endothelial growth factor (VEGF) neutralizing antibodies lessen hemorrhage associated with adult onset arteriovenous malformations (AVMs). OBJECTIVES: The goal of this study is to evaluate potential therapeutic effects of oral delivery of four anti-angiogenic tyrosine-kinase inhibitors (TKIs) in the development of adult onset AVMs in a murine model of HHT...
March 24, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28338654/tfeb-vegfa-6p21-1-co-amplified-renal-cell-carcinoma-a-distinct-entity-with-potential-implications-for-clinical-management
#2
Sounak Gupta, Sarah H Johnson, George Vasmatzis, Binu Porath, Jeannette G Rustin, Priya Rao, Brian A Costello, Bradley C Leibovich, R Houston Thompson, John C Cheville, William R Sukov
A subset of renal cell carcinomas shows TFEB overexpression secondary to MALAT1-TFEB gene fusion. As alternate mechanisms of TFEB overexpression are likely to have the same effect, we sought to determine the frequency of amplification of TFEB and the adjacent VEGFA gene at 6p21.1. As patients with metastatic renal cell carcinomas are managed with anti-VEGF therapies, we retrospectively assessed therapeutic response in patients with amplified tumors. Amplification status was analyzed for 875 renal cell carcinomas from our institution, a consultative case and 794 cases from The Cancer Genome Atlas...
March 24, 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/28337306/thymoquinone-potentiates-chemoprotective-effect-of-vitamin-d3-against-colon-cancer-a-pre-clinical-finding
#3
Amr M Mohamed, Bassem A Refaat, Adel G El-Shemi, Osama A Kensara, Jawwad Ahmad, Shakir Idris
Prevention of colon cancer among high-risk group has been long lasting research goal. Emerging data have evidenced the anticancer activities of Vitamin D3 (Vit.D) and Thymoquinone (TQ). The aim of the current study was to evaluate the synergistic potential of Thymoquinone and Vitamin D3 in the control of colon cancer progression using azoxymethane-induced rat model. Vit.D and TQ were given individually or in combination 4 week prior to induction and continued for a total of 20 week. At the end of the study, all animals were euthanized and their resected colons were examined macroscopically and microscopically for tumor growth...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28337055/diabetic-retinopathy-knowledge-awareness-and-practices-of-physicians-in-primary-care-centers-in-riyadh-saudi-arabia
#4
Raghad Al Rasheed, Fadwa Al Adel
PURPOSE: Diabetic retinopathy (DR) is a serious cause of irreversible blindness and is the most common complication of diabetes. Annual fundus examination for diabetics aids in the prevention of blindness and allows intervening at a timely manner. As primary care physicians (PCP) are the main providers for diabetic care in Saudi Arabia, we aim to evaluate the current knowledge and awareness, and to assess practices among PCP regarding DR. METHODS: We conducted a cross-sectional study covering 46 randomly selected primary-care centers in Riyadh during October 2015...
January 2017: Saudi Journal of Ophthalmology: Official Journal of the Saudi Ophthalmological Society
https://www.readbyqxmd.com/read/28336283/-early-efficacy-of-dexamethasone-implant-ozurdex-%C3%A2-in-diabetic-macular-edema-real-life-study
#5
V Sarda, F Fajnkuchen, S Nghiem-Buffet, T Grenet, G Chaine, A Giocanti-Auregan
PURPOSE: To assess early efficacy of dexamethasone intravitreal implant 0.7mg (OZURDEX(®)) at the time of peak efficacy (2 months after injection) in patients with decreased visual acuity secondary to diabetic macular edema (DME). MATERIALS AND METHODS: Retrospective monocentric study. Inclusion criteria were best-corrected visual acuity (BCVA)≤70 letters (20/40) due to DME and central retinal thickness (CRT)≥300 microns (Cirrus 2, Carl Zeiss Meditec, Inc, Dublin)...
March 20, 2017: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/28336128/retinal-pigment-epithelium-tears-classification-pathogenesis-predictors-and-management
#6
REVIEW
Mehmet Giray Ersoz, Murat Karacorlu, Serra Arf, Isil Sayman Muslubas, Mumin Hocaoglu
Various eye conditions cause tears in the retinal pigment epithelium (RPE). The most common cause of an RPE tear is vascularized retinal pigment epithelial detachment (PED) in patients with exudative age-related macular degeneration. Although RPE tears can develop spontaneously in vascularized PEDs, most recent cases have been associated with anti-vascular endothelial growth factor (VEGF) injections. The subretinal fluid within the PED applies hydrostatic pressure to the RPE and stretches it. The PED enlarges as the hydrostatic pressure increases...
March 20, 2017: Survey of Ophthalmology
https://www.readbyqxmd.com/read/28335793/thrombus-leukocytes-exhibit-more-endothelial-cell-specific-angiogenic-markers-than-peripheral-blood-leukocytes-do-in-acute-coronary-syndrome-patients-suggesting-a-possibility-of-trans-differentiation-a-comprehensive-database-mining-study
#7
Hangfei Fu, Nish Vadalia, Eric R Xue, Candice Johnson, Luqiao Wang, William Y Yang, Claudette Sanchez, Jun Nelson, Qian Chen, Eric T Choi, Jian-Xing Ma, Jun Yu, Hong Wang, Xiaofeng Yang
BACKGROUND: Current angiogenic therapies for cancers and cardiovascular diseases have not yet achieved expected benefits, which reflects the need for improved understanding of angiogenesis. In this study, we focused on solving the problem of whether tissues have different angiogenic potentials (APs) in physiological conditions and how angiogenesis is regulated in various disease conditions. METHODS: In healthy and diseased human and mouse tissues, we profiled the expression of 163 angiogenic genes, including transcription regulators (TRs), growth factors and receptors (GF/Rs), cytokines and chemokines (C/Cs), and proteases and inhibitors (P/Is)...
March 23, 2017: Journal of Hematology & Oncology
https://www.readbyqxmd.com/read/28332616/long-acting-protein-drugs-for-the-treatment-of-ocular-diseases
#8
Joy G Ghosh, Andrew A Nguyen, Chad E Bigelow, Stephen Poor, Yubin Qiu, Nalini Rangaswamy, Richard Ornberg, Brittany Jackson, Howard Mak, Tucker Ezell, Vania Kenanova, Elisa de la Cruz, Ana Carrion, Bijan Etemad-Gilbertson, Roxana Garcia Caro, Kan Zhu, Vinney George, Jirong Bai, Radhika Sharma-Nahar, Siyuan Shen, Yiqin Wang, Kulandayan K Subramanian, Elizabeth Fassbender, Michael Maker, Shawn Hanks, Joanna Vrouvlianis, Barrett Leehy, Debby Long, Melissa Prentiss, Viral Kansara, Bruce Jaffee, Thaddeus P Dryja, Michael Roguska
Protein drugs that neutralize vascular endothelial growth factor (VEGF), such as aflibercept or ranibizumab, rescue vision in patients with retinal vascular diseases. Nonetheless, optimal visual outcomes require intraocular injections as frequently as every month. Here we report a method to extend the intravitreal half-life of protein drugs as an alternative to either encapsulation or chemical modifications with polymers. We combine a 97-amino-acid peptide of human origin that binds hyaluronan, a major macromolecular component of the eye's vitreous, with therapeutic antibodies and proteins...
March 23, 2017: Nature Communications
https://www.readbyqxmd.com/read/28330905/secretogranin-iii-as-a-disease-associated-ligand-for-antiangiogenic-therapy-of-diabetic-retinopathy
#9
Michelle E LeBlanc, Weiwen Wang, Xiuping Chen, Nora B Caberoy, Feiye Guo, Chen Shen, Yanli Ji, Hong Tian, Hui Wang, Rui Chen, Wei Li
Diabetic retinopathy (DR) is a leading cause of vision loss with retinal vascular leakage and/or neovascularization. Current antiangiogenic therapy against vascular endothelial growth factor (VEGF) has limited efficacy. In this study, we applied a new technology of comparative ligandomics to diabetic and control mice for the differential mapping of disease-related endothelial ligands. Secretogranin III (Scg3) was discovered as a novel disease-associated ligand with selective binding and angiogenic activity in diabetic but not healthy vessels...
March 22, 2017: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/28330784/vascular-endothelial-growth-factor-vegf-and-vegf-receptor-inhibitors-in-the-treatment-of-renal-cell-carcinomas
#10
REVIEW
Robert Roskoski
One Von Hippel-Lindau (VHL) tumor suppressor gene is lost in most renal cell carcinomas while the nondeleted allele exhibits hypermethylation-induced inactivation or inactivating somatic mutations. As a result of these genetic modifications, there is an increased production of VEGF-A and pro-angiogenic growth factors in this disorder. The important role of angiogenesis in the pathogenesis of renal cell carcinomas and other tumors has focused the attention of investigators on the biology of VEGFs and VEGFR1-3 and to the development of inhibitors of the intricate and multifaceted angiogenic pathways...
March 18, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/28325297/engineering-of-pedf-expressing-primary-pigment-epithelial-cells-by-the-sb-transposon-system-delivered-by-pfar4-plasmids
#11
Gabriele Thumann, Nina Harmening, Cécile Prat-Souteyrand, Corinne Marie, Marie Pastor, Attila Sebe, Csaba Miskey, Laurence D Hurst, Sabine Diarra, Martina Kropp, Peter Walter, Daniel Scherman, Zoltán Ivics, Zsuzsanna Izsvák, Sandra Johnen
Neovascular age-related macular degeneration (nvAMD) is characterized by choroidal blood vessels growing into the subretinal space, leading to retinal pigment epithelial (RPE) cell degeneration and vision loss. Vessel growth results from an imbalance of pro-angiogenic (e.g., vascular endothelial growth factor [VEGF]) and anti-angiogenic factors (e.g., pigment epithelium-derived factor [PEDF]). Current treatment using intravitreal injections of anti-VEGF antibodies improves vision in about 30% of patients but may be accompanied by side effects and non-compliance...
March 17, 2017: Molecular Therapy. Nucleic Acids
https://www.readbyqxmd.com/read/28324452/a-review-of-ranibizumab-for-the-treatment-of-diabetic-retinopathy
#12
REVIEW
Michael W Stewart
INTRODUCTION: Laser photocoagulation has been the standard treatment for diabetic macular edema (DME) and proliferative diabetic retinopathy (PDR) for several decades. The discovery of vascular endothelial growth factor (VEGF) and the subsequent determination of its critical role in the development DME and PDR has led to the development of VEGF inhibitory drugs. Ranibizumab was the first anti-VEGF drug approved for the treatment of both DME and diabetic retinopathy in eyes with DME. METHODS: Medline searches with the keywords "ranibizumab," "diabetic macular edema," and "proliferative diabetic retinopathy" were performed to identify pertinent pre-clinical studies and clinical trials...
March 21, 2017: Ophthalmology and Therapy
https://www.readbyqxmd.com/read/28323589/preventing-high-altitude-cerebral-edema-in-rats-with-repurposed-anti-angiogenesis-pharmacotherapy
#13
Samantha Tarshis, Joanne Maltzahn, Zoe Loomis, David C Irwin
BACKGROUND: High altitude cerebral edema (HACE) is a fulminant, deadly, and yet still unpredictable brain disease. A new prophylactic treatment for HACE and its predecessor, acute mountain sickness (AMS), needs to be developed without the contraindications or adverse effect profiles of acetazolamide and dexamethasone. Since neovascularization signals are likely key contributors to HACE/AMS, our approach was to examine already existing anti-angiogenic drugs to inhibit potential initiating HACE pathway(s)...
December 1, 2016: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28323051/anticancer-and-anti-angiogenic-activities-of-extract-from-actinidia-eriantha-benth-root
#14
Jian-Guo Wu, Li Ma, Shui-Hua Lin, Yan-Bin Wu, Jun Yi, Bin-Jun Yang, Jin-Zhong Wu, Ka-Hing Wong
ETHNOPHARMACOLOGICAL RELEVANCE: The roots of Actinidia eriantha Benth (AER) are commonly used traditional folk medicine for the treatment of gastric carcinoma, nasopharyngeal carcinoma, and breast carcinoma. Besides, the anti-proliferative and immunomodulatory effects of AER polysaccharides on tumor-bearing mice have been reported previously. AIM OF THE STUDY: This work was carried out to investigate the anticancer and anti-angiogenic activities of AER. MATERIALS AND METHODS: The growth inhibitory effects of ethanol extracts from the leaves (EEL), stems (EES) and roots (EER) of A...
March 17, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28320472/increased-serum-levels-of-fractalkine-and-mobilisation-of-cd34-cd45-endothelial-progenitor-cells-in-systemic-sclerosis
#15
Audrey Benyamine, Jérémy Magalon, Sylvie Cointe, Romaric Lacroix, Laurent Arnaud, Nathalie Bardin, Pascal Rossi, Yves Francès, Fanny Bernard-Guervilly, Gilles Kaplanski, Jean-Robert Harlé, Pierre-Jean Weiller, Philippe Berbis, David Braunstein, Elisabeth Jouve, Nathalie Lesavre, Françoise Couranjou, Françoise Dignat-George, Florence Sabatier, Pascale Paul, Brigitte Granel
BACKGROUND: The disruption of endothelial homeostasis is a major determinant in the pathogenesis of systemic sclerosis (SSc) and is reflected by soluble and cellular markers of activation, injury and repair. We aimed to provide a combined assessment of endothelial markers to delineate specific profiles associated with SSc disease and its severity. METHODS: We conducted an observational, single-centre study comprising 45 patients with SSc and 41 healthy control subjects...
March 20, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28320252/the-impact-of-laser-surgery-on-angiogenic-and-anti-angiogenic-factors-in-twin-twin-transfusion-syndrome-a-prospective-study
#16
Andrew H Chon, Emiliano R Chavira, Melissa L Wilson, Sue A Ingles, Arlyn Llanes, Ramen H Chmait
OBJECTIVE: To examine the effect of laser surgery on angiogenic and anti-angiogenic factors in patients with twin-twin transfusion syndrome (TTTS). METHODS: Cases of TTTS and uncomplicated monochorionic diamniotic twin pregnancies between 16-26 weeks' gestation were prospectively enrolled into the study. Maternal blood samples were obtained to measure angiogenic factors (vascular endothelial growth factor-A (VEGF), placental-derived growth factor (PlGF), endothelin) and anti-angiogenic factors (soluble fms-like tyrosine kinase (sFlt-1), soluble endoglin (sEng), sFlt-1/PlGF ratio)...
March 20, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28319529/the-notch-signaling-system-is-involved-in-the-regulation-of-reparative-angiogenesis-in-the-zone-of-stasis
#17
Ozan Luay Abbas, Orhan Özatik, Yunus Kasm Terzi, Fikriye Yasemin Özatik, Rukiye Nar, Gamze Turna
The Notch pathway ligand Delta-like 4 (Dll4) functions as an antiangiogenic factor, inhibiting vascular endothelial growth factor (VEGF)-induced angiogenesis. This function is documented in tumor and embryonic vasculature. However, its implication in burn wounds remains unexplored. Our objective was to explore the involvement of the Notch in the healing of zone of stasis burns. We hypothesized that anti-Dll4 therapy would prevent progressive necrosis in the stasis zone by promoting angiogenesis. Burns were created in 21 rats using the comb burn model...
March 13, 2017: Journal of Burn Care & Research: Official Publication of the American Burn Association
https://www.readbyqxmd.com/read/28318643/cxcl10-alters-the-tumour-immune-microenvironment-and-disease-progression-in-a-syngeneic-murine-model-of-high-grade-serous-ovarian-cancer
#18
Katrina K Au, Nichole Peterson, Peter Truesdell, Gillian Reid-Schachter, Kasra Khalaj, Runhan Ren, Julie-Ann Francis, Charles H Graham, Andrew W Craig, Madhuri Koti
OBJECTIVE: We recently established that high STAT1 expression and associated T helper type I tumour immune microenvironment (TME) are prognostic and chemotherapy response predictive biomarkers in high-grade serous ovarian cancer (HGSC). STAT1 induced chemokine CXCL10 is key to the recruitment of lymphocytes in the TME and is significantly highly expressed in the tumours from patients with longer survival. In the current study we therefore aimed to elucidate the role CXCL10 in disease progression and tumour immune transcriptomic alterations using the ID8 syngeneic murine model of HGSC...
March 16, 2017: Gynecologic Oncology
https://www.readbyqxmd.com/read/28316837/combination-of-navigated-macular-laser-photocoagulation-and-anti-vegf-therapy-precise-treatment-for-macular-edema-under-dry-retinal-conditions
#19
Ernest V Boiko, Dmitrii S Maltsev
Purpose. To compare the controllability of navigated macular laser photocoagulation (MLP) in dry versus edematous retina and validate that pretreatment diagnostic images can be used as basis for navigated MLP after the macular edema (ME) has been resolved. Materials and Methods. Group 1 was divided into subgroup 1 (dry retina MLP) and subgroup 2 (MLP in ME) for comparisons of laser-burn diameters. In group 2, the areas and locations of ME before an intravitreal injection of anti-VEGF (IVAV) were compared with those of recurrent ME...
2017: Journal of Ophthalmology
https://www.readbyqxmd.com/read/28316835/clinical-characteristics-of-patients-with-newly-diagnosed-diabetic-macular-edema-in-turkey-a-real-life-registry-study-turk-dem
#20
Bora Eldem, Sengul Ozdek, Ali Osman Saatci, Emin Ozmert, Esat Ulay, Gulsah Nomak
Purpose. To evaluate the clinical and diagnostic characteristics of patients with newly diagnosed diabetic macular edema (DME) in Turkey in a real-life setting. Methods. A total of 945 consecutive patients (mean (SD) age: 61.3 (9.9) years, 55.2% male) with newly diagnosed DME were included. Data on patient demographics, comorbidities, ocular history, ophthalmic examination findings including type of DME, central macular thickness (CMT) via time domain (TD) and spectral domain (SD) optical coherence tomography (OCT), and planned treatments were recorded...
2017: Journal of Ophthalmology
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