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https://www.readbyqxmd.com/read/28820281/isolated-cranio-orbitofacial-neurofibroma-mimicking-vascular-malformation
#1
Harinder S Chahal, Brandon Kuiper, Puneet S Braich, A Tyrone Glover
Isolated neurofibromas in the absence of systemic neurofibromatosis are known as solitary or localized neurofibromas. When present in the orbit, these lesions may appear clinically and radiographically similar to other tumors, complicating diagnosis and management. Key radiographic signs may guide clinicians to the correct diagnosis when the presentation and patient demographic data obfuscate the disease entity. We present a case of a large multi-lobulated neurofibroma misdiagnosed as a lymphangioma. A brief review of these tumors emphasizing key radiographic features is also included...
August 18, 2017: Orbit
https://www.readbyqxmd.com/read/28820167/swept-source-optical-coherence-tomography-angiography-of-choroid-in-choroidal-hemangioma-before-and-after-laser-photocoagulation
#2
Rohan Chawla, Koushik Tripathy, Anu Sharma, Rajpal Vohra
Swept source optical coherence tomography-angiography (OCT-angiography) gives us a unique opportunity to study the vasculature of choroidal lesions in vivo. We describe the OCT angiographic characteristics of circumscribed choroidal hemangioma before and after laser photocoagulation. Medium-sized choroidal vessels/vessels on the tumor surface become predominantly visible after laser photocoagulation due to laser-induced damage to the overlying choriocapillaris. OCT-angiography adds a new dimension to in vivo analysis of vascular changes in choroid due to choroidal tumors and their response to therapy...
August 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/28819935/plasma-biomarkers-of-inflammation-reflect-seizures-and-hemorrhagic-activity-of-cerebral-cavernous-malformations
#3
Romuald Girard, Hussein A Zeineddine, Maged D Fam, Anoop Mayampurath, Ying Cao, Changbin Shi, Robert Shenkar, Sean P Polster, Michael Jesselson, Ryan Duggan, Abdul-Ghani Mikati, Gregory Christoforidis, Jorge Andrade, Kevin J Whitehead, Dean Y Li, Issam A Awad
The clinical course of cerebral cavernous malformations (CCMs) is highly variable. Based on recent discoveries implicating angiogenic and inflammatory mechanisms, we hypothesized that serum biomarkers might reflect chronic or acute disease activity. This single-site prospective observational cohort study included 85 CCM patients, in whom 24 a priori chosen plasma biomarkers were quantified and analyzed in relation to established clinical and imaging parameters of disease categorization and severity. We subsequently validated the positive correlations in longitudinal follow-up of 49 subjects...
August 17, 2017: Translational Stroke Research
https://www.readbyqxmd.com/read/28819706/generation-of-a-functional-humanized-delta-like-ligand-4-transgenic-mouse-model
#4
John Wiseman, Pernilla Gregersson, Johan Johansson, Kerstin Magnell, Fernanda Pilataxi, Chris Morehouse, Philip Brohawn, Nicholas Holoweckyj, Patrick Strout, Song Cho
Humanized mouse models are important tools in many areas of biological drug development including, within oncology research, the development of antagonistic antibodies that have the potential to block tumor growth by controlling vascularization and are key to the generation of in vivo proof-of-concept efficacy data. However, due to cross reactivity between human antibodies and mouse target such studies regularly require mouse models expressing only the human version of the target molecule. Such humanized knock-in/knock-out, KIKO, models are dependent upon the generation of homozygous mice expressing only the human molecule, compensating for loss of the mouse form...
August 17, 2017: Transgenic Research
https://www.readbyqxmd.com/read/28819378/hif-is-not-essential-for-suppression-of-experimental-tumor-growth-by-mtor-inhibition
#5
Karl X Knaup, Regina Guenther, Johanna Stoeckert, Juliana M Monti, Kai-Uwe Eckardt, Michael S Wiesener
The Hypoxia Inducible Transcription Factor (HIF) is the master regulator of cellular response to hypoxic adaptation. Solid tumors inevitably harbour hypoxic regions with subsequent stabilization and activation of HIF and HIF target genes due to poor vascularization and rapid growth. The mammalian target of rapamycin (mTOR) is a global regulator of cellular growth and proliferation, which can also regulate HIF expression independantly of hypoxia via specific activation of cellular translation and transcription...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/28819189/vascular-hysteresis-loops-and-vascular-architecture-mapping-in-patients-with-glioblastoma-treated-with-antiangiogenic-therapy
#6
Andreas Stadlbauer, Max Zimmermann, Stefan Oberndorfer, Arnd Doerfler, Michael Buchfelder, Gertraud Heinz, Karl Roessler
In this study, we investigated the variability of vascular hysteresis loop (VHL) shapes and the spatial heterogeneity of neovascularization and microvascular alterations using vascular architecture mapping (VAM) in patients with recurrent glioblastoma during bevacizumab mono-therapy. VAM data were acquired in 13 patients suffering from recurrent glioblastoma prior to and 3 months after bevacizumab treatment onset using a dual contrast agent injections approach as part of routine MRI. Two patients were additionally examined after the first cycle of bevacizumab to check for early treatment response...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28818988/multiregional-tumor-drug-uptake-imaging-by-pet-and-microvascular-morphology-in-end-stage-diffuse-intrinsic-pontine-glioma
#7
Sophie E M Veldhuijzen van Zanten, A Charlotte P Sewing, Arthur van Lingen, Otto S Hoekstra, Pieter Wesseling, Michaël H Meel, Dannis G van Vuurden, Gertjan J L Kaspers, Esther Hulleman, Marianna Bugiani
Inadequate tumor uptake of the vascular endothelial growth factor (VEGF) antibody bevacizumab could explain lack of effect in diffuse intrinsic pontine glioma (DIPG). Methods: By combining data from a positron emission tomography (PET) imaging study using zirconium-89((89)Zr)-labeled bevacizumab and an autopsy study, a 1-on-1 analysis of multiregional in vivo and ex vivo (89)Zr-bevacizumab uptake, tumor histology and vascular morphology in a DIPG patient was performed. Results: In vivo (89)Zr-bevacizumab measurements showed heterogeneity between lesions...
August 17, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/28818770/hereditary-multiple-exostoses-as-a-novel-cause-of-bilateral-popliteal-artery-aneurysms-in-the-elderly
#8
Eliza J Ferrari, Rory K Crotty, Katharina Eikermann-Haerter, James R Stone
Hereditary multiple exostoses (HME) is a genetic condition characterized by the development of multiple osteochondromas during childhood and adolescence. On rare occasions, these bony tumors can be associated with vascular injury, most commonly involving the popliteal artery. Such patients typically present with vascular complications in adolescence and young adulthood. We report an autopsy study of an elderly man who presented with bilateral popliteal artery pseudoaneurysms in the setting of HME at age 81...
July 8, 2017: Cardiovascular Pathology: the Official Journal of the Society for Cardiovascular Pathology
https://www.readbyqxmd.com/read/28817784/hydrogen-peroxide-regulates-angiogenesis-related-factors-in-tumor-cells
#9
Ana Jerónimo, Gonçalo Rodrigues, Filipe Vilas-Boas, Gabriel G Martins, Ana Bagulho, Carla Real
Tumor angiogenesis is required for tumor development and growth and is regulated by several factors including reactive oxygen species (ROS). Hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) is a ROS with an important role in cell signaling but how H<sub>2</sub>O<sub>2</sub> regulates tumor angiogenesis is still poorly understood. We have xenografted tumor cells with altered levels of H<sub>2</sub>O<sub>2</sub> by catalase overexpression into zebrafish embryos to study redox-induced tumor neovascularization...
August 17, 2017: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
https://www.readbyqxmd.com/read/28817706/hiv-infection-antiretroviral-therapy-and-measures-of-endothelial-function-inflammation-metabolism-and-oxidative-stress
#10
Andrew Dysangco, Ziyue Liu, James H Stein, Michael P Dubé, Samir K Gupta
BACKGROUND: HIV-infected patients have an increased risk of cardiovascular disease (CVD). Impaired endothelial function is an early risk factor for CVD in the general population. It is presumed that HIV infection is associated with impaired endothelial function, but results have been inconsistent. OBJECTIVES: Our objectives were to determine the relationships between HIV infection, virologic suppression with antiretroviral therapy (ART), in vivo measures of conduit artery and microvascular endothelial function, and circulating biomarkers of pathways associated with CVD...
2017: PloS One
https://www.readbyqxmd.com/read/28817373/cabozantinib-as-salvage-therapy-for-patients-with-tyrosine-kinase-inhibitor-refractory-differentiated-thyroid-cancer-results-of-a-multicenter-phase-ii-international-thyroid-oncology-group-trial
#11
Maria E Cabanillas, Jonas A de Souza, Susan Geyer, Lori J Wirth, Michael E Menefee, Stephen V Liu, Komal Shah, John Wright, Manisha H Shah
Purpose Sorafenib and lenvatinib are oral multikinase inhibitors targeting vascular endothelial growth factor receptor (VEGFR) and approved for radioiodine (RAI)-refractory differentiated thyroid cancer (DTC). However, there are no approved second- or third-line therapies. MET is implicated in resistance to VEGFR inhibitors. Cabozantinib is an oral multikinase inhibitor targeting MET in addition to VEGFR and is approved for medullary thyroid cancer. In a phase I study of cabozantinib, five of eight patients with DTC previously treated with a VEGFR-targeted therapy had an objective response to cabozantinib...
August 17, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28817119/mir-1301-inhibits-hepatocellular-carcinoma-cell-migration-invasion-and-angiogenesis-by-decreasing-wnt-%C3%AE-catenin-signaling-through-targeting-bcl9
#12
Chao Yang, Yonghua Xu, Feng Cheng, Yuanchang Hu, Shikun Yang, Jianhua Rao, Xuehao Wang
Metastasis is the major cause of the poor prognosis of hepatocellular carcinoma (HCC), and increasing evidence supports the contribution of miRNAs to cancer progression. However, the exact relationship between the level of miR-1301 expression and HCC cell migration, invasion, and angiogenesis remains largely unknown. Quantitative PCR was used to evaluate the level of miR-1301 expression in HCC tissues and cell lines. Transwell and tube-formation assays were used to measure the effects of miR-1301 on HCC cell migration and invasion, and angiogenesis, respectively...
August 17, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28817103/a-review-of-anti-angiogenic-targets-for-monoclonal-antibody-cancer-therapy
#13
REVIEW
Deok-Hoon Kong, Mi Ra Kim, Ji Hye Jang, Hee-Jun Na, Sukmook Lee
Tumor angiogenesis is a key event that governs tumor progression and metastasis. It is controlled by the complicated and coordinated actions of pro-angiogenic factors and their receptors that become upregulated during tumorigenesis. Over the past several decades, vascular endothelial growth factor (VEGF) signaling has been identified as a central axis in tumor angiogenesis. The remarkable advent of recombinant antibody technology has led to the development of bevacizumab, a humanized antibody that targets VEGF and is a leading clinical therapy to suppress tumor angiogenesis...
August 17, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28816971/combining-of-serial-embolization-and-denosumab-for-large-sacropelvic-giant-cell-tumor-case-report-of-3-cases
#14
Tao Ji, Yi Yang, Yifei Wang, Kunkun Sun, Wei Guo
RATIONALE: Both serial arterial embolization (SAE) and denosumab have been proved to be effective in treatment for giant cell tumor (GCT). There is potential synergic effect of combining two methods. The purpose of current study is to justify a new treatment strategy of combination of SAE and denosumab as neoadjuvant or stand-alone treatment for large sacropelvic giant cell tumor. PATIENT CONCERNS: Pelvic and sacral GCTs tend to be very large size and vascular. The concerns of surgical treatment were invasiveness of extensive surgery, intraoperative hemorrhage, nerve function jeopardized and local recurrence...
August 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28816969/immediate-breast-reconstruction-with-omental-flap-for-luminal-breast-cancer-patients-ten-clinical-case-reports
#15
Nanlin Li, Zhao Zheng, Jipeng Li, Jing Fan, Ting Wang, Juliang Zhang, Hui Wang, Jianghao Chen, Yonggang Lv, Jun Yi, Meiling Huang, Rui Ling
RATIONALE: Luminal subtype breast cancer, accounting for 70 to 80% of all breast cancers, has been reported to be associated with good prognosis. However, for the patients with large mass or worse mass position, omental flap transplantation may provide a new option for breast reconstruction. PATIENT CONCERNS: Ten patients (6 luminal B1, 2 luminal B2, 2 luminal A), were enrolled into the study, between January 23, 2015 and August 22, 2016. The mean age was 34.6 ± 6...
August 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28816953/peritumoral-decreased-uptake-area-of-gadoxetic-acid-enhanced-magnetic-resonance-imaging-and-tumor-recurrence-after-surgical-resection-in-hepatocellular-carcinoma-a-strobe-compliant-article
#16
Seung Kak Shin, Yun Soo Kim, Young Sup Shim, Seung Joon Choi, So Hyun Park, Dong Hae Jung, Oh Sang Kwon, Duck Joo Choi, Ju Hyun Kim
Recently, it has been suggested that peritumoral decreased uptake area (PDUA) in the hepatobiliary phase (HBP) of gadoxetic acid (Gd-EOB-DTPA)-enhanced magnetic resonance imaging (MRI) was associated with vascular invasion in hepatocellular carcinoma (HCC). We aimed to investigate correlations between microvascular invasion and PDUA, and elucidate the predictability of PDUA for tumor recurrence after resection.We retrospectively analyzed clinicopathological and radiological data from 126 consecutive patients with single HCC ≤5 cm without macrovascular invasion who underwent preoperative Gd-EOB-DTPA-enhanced MRI and surgical resection...
August 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28815349/tumor-volume-doubling-time-as-a-dynamic-prognostic-marker-for-patients-with-hepatocellular-carcinoma
#17
Jong Kwan Kim, Hyung-Don Kim, Mi-Jung Jun, Sung-Cheol Yun, Ju Hyun Shim, Han Chu Lee, Danbi Lee, Jihyun An, Young-Suk Lim, Young-Hwa Chung, Yung Sang Lee, Kang Mo Kim
BACKGROUND AND AIMS: To evaluate the clinical value of tumor growth rate in hepatocellular carcinoma (HCC) patients, we investigated the growth rate of HCC by calculating the tumor volume doubling time (TVDT) and its impact on survival and recurrence. METHODS: A retrospective cohort study of 269 HCC patients who underwent two or more pretreatment imaging studies of computed tomography or magnetic resonance imaging was performed. Tumor growth rate and TVDT were calculated by comparing tumor volumes between imaging studies...
August 16, 2017: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/28814880/cd155-expression-and-its-correlation-with-clinicopathologic-characteristics-angiogenesis-and-prognosis-in-human-cholangiocarcinoma
#18
Da-Wei Huang, Mei Huang, Xian-Sheng Lin, Qiang Huang
BACKGROUND: CD155, an immunoglobulin-like adhesion molecule, plays an important role in carcinoma such as cells migration, proliferation, metastasis, and tumor immune. The upregulation of CD155 has been found in several human malignancies, but its expression in cholangiocarcinoma (CCA) still remains unclear. The aim of this study is to investigate CD155 expression and its correlations with clinicopathologic data, angiogenesis, and prognosis in the patients with CCA. MATERIALS AND METHODS: CD155 expression was investigated in 20 paired CCA tissues and corresponding paracancerous tissues by Western blotting and quantitative real-time polymerase chain reaction assays at protein and mRNA levels...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28814331/circulating-levels-of-soluble-fas-scd95-are-associated-with-risk-for-development-of-a-nonresolving-acute-kidney-injury-subphenotype
#19
Pavan K Bhatraju, Cassianne Robinson-Cohen, Carmen Mikacenic, Susanna Harju-Baker, Victoria Dmyterko, Natalie S J Slivinski, W Conrad Liles, Jonathan Himmelfarb, Susan R Heckbert, Mark M Wurfel
BACKGROUND: Critically ill patients with acute kidney injury (AKI) can be divided into two subphenotypes, resolving or nonresolving, on the basis of the trajectory of serum creatinine. It is unknown if the biology underlying these two AKI recovery patterns is different. METHODS: We measured eight circulating biomarkers in plasma obtained from a cohort of patients admitted to an intensive care unit (ICU) (n = 1241) with systemic inflammatory response syndrome...
August 17, 2017: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/28813676/pharmacologic-or-genetic-targeting-of-glutamine-synthetase-skews-macrophages-toward-an-m1-like-phenotype-and-inhibits-tumor-metastasis
#20
Erika M Palmieri, Alessio Menga, Rosa Martín-Pérez, Annamaria Quinto, Carla Riera-Domingo, Giacoma De Tullio, Douglas C Hooper, Wouter H Lamers, Bart Ghesquière, Daniel W McVicar, Attilio Guarini, Massimiliano Mazzone, Alessandra Castegna
Glutamine-synthetase (GS), the glutamine-synthesizing enzyme from glutamate, controls important events, including the release of inflammatory mediators, mammalian target of rapamycin (mTOR) activation, and autophagy. However, its role in macrophages remains elusive. We report that pharmacologic inhibition of GS skews M2-polarized macrophages toward the M1-like phenotype, characterized by reduced intracellular glutamine and increased succinate with enhanced glucose flux through glycolysis, which could be partly related to HIF1α activation...
August 15, 2017: Cell Reports
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