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Extravasation

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https://www.readbyqxmd.com/read/28521919/intravascular-ultrasound-analysis-of-intraplaque-versus-subintimal-tracking-in-percutaneous-intervention-for-coronary-chronic-total-occlusions-and-association-with-procedural-outcomes
#1
Lei Song, Akiko Maehara, Matthew T Finn, Sanjog Kalra, Jeffrey W Moses, Manish A Parikh, Ajay J Kirtane, Michael B Collins, Tamim M Nazif, Khady N Fall, Raja Hatem, Ming Liao, Tiffany Kim, Philip Green, Ziad A Ali, Candido Batres, Martin B Leon, Gary S Mintz, Dimitri Karmpaliotis
OBJECTIVES: Using intravascular ultrasound (IVUS), the authors compared outcomes by observed wire position (intraplaque vs. subintimal) achieved during successful chronic total occlusion (CTO) lesion treatment. BACKGROUND: Recent successes in CTO percutaneous coronary intervention (PCI) have used both intraluminal and subintimal wire tracking to improve procedural success. IVUS may be used to determine the course of wire tracking after crossing a CTO. METHODS: From March 2014 to March 2016, data were collected into a single-center database from 219 patients undergoing CTO PCI with concomitant IVUS imaging...
May 22, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28518096/invasive-behavior-of-human-breast-cancer-cells-in-embryonic-zebrafish
#2
Jiang Ren, Sijia Liu, Chao Cui, Peter Ten Dijke
In many cases, cancer patients do not die of a primary tumor, but rather because of metastasis. Although numerous rodent models are available for studying cancer metastasis in vivo, other efficient, reliable, low-cost models are needed to quickly access the potential effects of (epi)genetic changes or pharmacological compounds. As such, we illustrate and explain the feasibility of xenograft models using human breast cancer cells injected into zebrafish embryos to support this goal. Under the microscope, fluorescent proteins or chemically labeled human breast cancer cells are transplanted into transgenic zebrafish embryos, Tg (fli:EGFP), at the perivitelline space or duct of Cuvier (Doc) 48 h after fertilization...
April 25, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28514045/contrast-extravasation-versus-hemorrhage-after-thrombectomy-in-patients-with-acute-stroke
#3
Vivek Yedavalli, Steffen Sammet
BACKGROUND AND PURPOSE: Intra-arterial recanalization postprocedural imaging in stroke patients can result in diagnostic complications due to hyperdensities on noncontrast computed tomography (CT), which may represent either contrast extravasation or intracranial hemorrhage. If these lesions are hemorrhage, then they are risk factors becoming symptomatic, which, if not distinguished, can alter clinical management. We investigate the effects of iodinated contrast on postprocedural magnetic resonance imaging (MRI) and prevalence of equivocal imaging interpretations of postprocedural extravasated contrast versus hemorrhage while identifying protocol pitfalls...
May 17, 2017: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
https://www.readbyqxmd.com/read/28513132/%C3%AE-amylase-and-redox-responsive-nanoparticles-for-tumor-targeted-drug-delivery
#4
Yihui Li, Hang Hu, Qing Zhou, Yanxiao Ao, Chen Xiao, Jiangling Wan, Ying Wan, Huibi Xu, Zifu Li, Xiangliang Yang
Paclitaxel (PTX) is an effective antineoplastic agent and shows potent anti-tumor activity against wide spectrum of cancers. Yet, the wide clinical use of paclitaxel (PTX) is limited by its poor aqueous solubility and side effects associated with current therapeutic formulation. To tackle these obstacles, we, for the first time, report an α-amylase- and redox- responsive nanoparticles based on hydroxyethyl starch (HES) for tumor targeted delivery of PTX. PTX is conjugated onto HES by redox-sensitive disulfide bond to form HES-SS-PTX, which is confirmed with NMR, HPLC-MS, and FT-IR...
May 17, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28511988/exploring-the-potential-of-nanotherapeutics-in-targeting-tumor-microenvironment-for-cancer-therapy
#5
REVIEW
Eameema Muntimadugu, Nagavendra Kommineni, Wahid Khan
Advanced research in the field of cancer biology clearly demonstrated the key role of tumor microenvironment (TME) in cancer development and metastasis particularly in solid tumors. Components of TME, being non-neoplastic in nature provide supportive and permissive conditions for the growth of cancer cells. Hence it is important to modify TME in cancer therapy and this would be achieved by better understanding of TME morphological features and functioning of stromal components. Nanotechnology based drug delivery offers various advantages such as prolonged circulation time, delivery of cargo at desired site, improved bioavailability, reduced toxicity etc...
May 13, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/28511151/peripheral-arteriovenous-fistula-as-vascular-access-for-long-term-chemotherapy
#6
Oleksiy O Kovalyov, Oleksandr G Kostyuk, Tetyana V Tkachuk
INTRODUCTION: To provide long-term vascular access in clinical oncology peripheral forearm veins (up to 95% of patients in Ukraine), central venous access and "complete implanted vascular systems" are used most often. Many oncology patients have contraindications to catheterization of superior vena cava. Besides, exploitation of central veins is associated with potential technical and infectious complications. The aim - to study short-term and long-term results of arteriovenous fistula exploitation as vascular access for continuous anticancer therapy...
2017: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/28508982/renal-hemorrhage-caused-by-acquired-inhibitors-to-coagulation-factors-viii-and-v-in-a-hemodialysis-patient
#7
Naoya Niwa, Tadashi Yoshida, Ryuichi Mizuno, Mototsugu Oya, Matsuhiko Hayashi
Acquired coagulation factor deficiency is a rare bleeding disorder caused by the inhibitors to coagulation factors. We report a case of an elderly hemodialysis patient who presented with the intermittent hematuria and anemia, associated with the prolonged activated partial thromboplastin time and prothrombin time. Laboratory examination revealed undetectable factor VIII activity, decreased factor V activity, and the presence of inhibitors to these coagulation factors. The patient was diagnosed to have inhibitors to coagulation factors VIII and V simultaneously...
November 2016: CEN Case Reports
https://www.readbyqxmd.com/read/28508924/intractable-epistaxis-which-arteries-are-responsible-an-angiographic-study
#8
Guillaume de Bonnecaze, Y Gallois, P Chaynes, F Bonneville, A Dupret-Bories, E Chantalat, E Serrano
PURPOSE: Epistaxis constitutes a significant proportion of the Otolaryngologist's emergency workload. Optimal management differs in relation to the anatomic origin of the bleeding. The outcome of our study was to determine which artery(ies) could be considered as the cause of severe bleeding in the context of severe epistaxis. METHODS: Fifty-five procedures of embolization preceded by angiography were reviewed. Medical records of interventionally treated patients were analysed for demographics, medical history, risk factors and clinical data...
May 16, 2017: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/28507122/control-of-metastatic-niche-formation-by-targeting-apba3-mint3-in-inflammatory-monocytes
#9
Toshiro Hara, Hiroki J Nakaoka, Tetsuro Hayashi, Kouhei Mimura, Daisuke Hoshino, Masahiro Inoue, Fumitaka Nagamura, Yoshinori Murakami, Motoharu Seiki, Takeharu Sakamoto
Cancer metastasis is intricately orchestrated by both cancer and normal cells, such as endothelial cells and macrophages. Monocytes/macrophages, which are often co-opted by cancer cells and promote tumor malignancy, acquire more than half of their energy from glycolysis even during normoxic conditions. This glycolytic activity is maintained during normoxia by the functions of hypoxia inducible factor 1 (HIF-1) and its activator APBA3. The mechanism by which APBA3 inhibition partially suppresses macrophage function and affects cancer metastasis is of interest in view of avoidance of the adverse effects of complete suppression of macrophage function during therapy...
May 15, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28506745/applying-nanomedicine-in-maladaptive-inflammation-and-angiogenesis
#10
Amr Alaarg, Carlos Pérez-Medina, Josbert M Metselaar, Matthias Nahrendorf, Zahi A Fayad, Gert Storm, Willem J M Mulder
Inflammation and angiogenesis drive the development and progression of multiple devastating diseases such as atherosclerosis, cancer, rheumatoid arthritis, and inflammatory bowel disease. Though these diseases have very different phenotypic consequences, they possess several common pathophysiological features in which monocyte recruitment, macrophage polarization, and enhanced vascular permeability play critical roles. Thus, developing rational targeting strategies tailored to the different stages of the journey of monocytes, from bone marrow to local lesions, and their extravasation from the vasculature in diseased tissues will advance nanomedicine...
May 12, 2017: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/28504957/post-pancreaticoduodenectomy-hemorrhage-dsa-diagnosis-and-endovascular-treatment
#11
Tan-Yang Zhou, Jun-Hui Sun, Yue-Lin Zhang, Guan-Hui Zhou, Chun-Hui Nie, Tong-Yin Zhu, Sheng-Qun Chen, Bao-Quan Wang, Wei-Lin Wang, Shu-Sen Zheng
OBJECTIVE: To explore the diagnostic value of digital subtraction angiography (DSA) and the effectiveness of endovascular treatment for a post-pancreaticoduodenectomy hemorrhage (PPH). RESULTS: During the DSA examination, positive results were found in 29 patients, yielding a positive rate of 69.0%. The manifestations of the DSA examination included contrast medium extravasation, pseudoaneurysm, and artery walls coarse. All 29 patients with positive results underwent endovascular treatment, including transartery embolization (TAE) in 28 patients and covered stents placement in one patient...
April 27, 2017: Oncotarget
https://www.readbyqxmd.com/read/28503468/extravasation-of-the-contrast-material-during-voiding-cystourethrography-in-a-chronic-spinal-cord-injury-patient-a-case-report
#12
Sohyun Kwon, Donghwi Park, Hoon Hoon Lee, Ju Seok Ryu
Neurogenic bladder is common in most spinal cord injury patients. Voiding cystourethrography (VCUG) is recommended in these patients to detect urinary tract complications. However, rare but serious complications may occur during VCUG, although VCUG is generally safe. There are several case reports of bladder rupture occurring in pediatric patients. Here, we report the first case of iatrogenic bladder rupture in an adult spinal cord injury patient in Korea. Particularly, extravasation of contrast without manual instillation has hardly ever been reported...
April 2017: Annals of Rehabilitation Medicine
https://www.readbyqxmd.com/read/28501694/4-4-diisothiocyanatostilbene-2-2-disulfonic-acid-attenuates-spontaneous-recurrent-seizures-and-vasogenic-edema-following-lithium-pilocarpine-induced-status-epilepticus
#13
Tingting Yang, Zhenzhou Lin, Ling Xie, Yao Wang, Suyue Pan
Vasogenic edema induced by blood brain barrier disruption and neuronal loss play an important role in the epileptogenic process. 4,4'- diisothiocyanatostilbene-2,2'-disulfonic acid (DIDS) is a commonly used anion channel inhibitor that has been reported to exert an anticonvulsant effect in rat hippocampus in vitro. The present study aimed to investigate whether DIDS could prevent epileptogenic process in rat lithium-pilocarpine model of temporal lobe epilepsy. The tight junction proteins and serum extravasation were examined in the piriform cortex 3days after status epilepticus...
May 10, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28497614/broad-th2-neutralization-and-anti-inflammatory-action-of-pentosan-polysulfate-sodium-in-experimental-allergic-rhinitis
#14
Caroline Sanden, Michiko Mori, Prajakta Jogdand, Jimmie Jönsson, Ravi Krishnan, Xiangdong Wang, Jonas S Erjefält
BACKGROUND: Th2 cytokines like interleukin-4, -5, and -13 are regarded as important drivers of the immunopathology underlying allergic rhinitis (AR) and asthma. The present study explores the capacity of pentosan polysulfate sodium (PPS), a semi-synthetic heparin-like macromolecular carbohydrate, to bind Th2 cytokines and exert biological neutralization in vitro, as well as anti-inflammatory actions in vivo. METHODOLOGY: The capacity of PPS to bind recombinant Th2 cytokines was tested with surface plasmon resonance (SPR) technology and biological Th2 neutralization was assessed by Th2-dependent proliferation assays...
May 12, 2017: Immunity, Inflammation and Disease
https://www.readbyqxmd.com/read/28497020/silicone-breast-implant-rupture-a-review
#15
REVIEW
Christopher Hillard, Jason D Fowler, Ruth Barta, Bruce Cunningham
Silicone breast implants have been in use for nearly 6 decades. In this time they have undergone significant changes in design and use. They have been subject to intense scrutiny with regard to safety and efficacy, including an almost 10 years moratorium on their use. The current generations of implants have been followed via the manufacturer's Core studies in order to obtain long term data regarding safety and complications. The results of the more recent studies are compiled in this review. Rupture rates are initially very low and begin to increase after 6-8 years of implantation...
April 2017: Gland Surgery
https://www.readbyqxmd.com/read/28493827/tlr2-activation-induces-antioxidant-defence-in-human-monocyte-macrophage-cell-line-models
#16
Iwona Karwaciak, Michal Gorzkiewicz, Grzegorz Bartosz, Lukasz Pulaski
When monocytes are recruited to inflammation/infection sites, extravasate and differentiate into macrophages, they encounter increasing levels of oxidative stress, both from exogenous and endogenous sources. In this study, we aimed to determine whether there are specific biochemical mechanisms responsible for an increase in oxidative stress resistance in differentiating macrophages. We performed experiments on in vitro cell line models of the monocyte-macrophage differentiation axis (less differentiated THP-1 cells and more differentiated Mono Mac 6 cells)...
April 21, 2017: Oncotarget
https://www.readbyqxmd.com/read/28493072/arterial-injury-during-transcatheter-arterial-chemoembolization-for-hepatocellular-carcinoma-predictors-of-risk-and-outcome
#17
Hironori Onizuka, Eijun Sueyoshi, Hideki Ishimaru, Ichiro Sakamoto, Masataka Uetani
PURPOSE: To investigate clinical features and results of follow-up in patients with arterial injury during transcatheter arterial chemoembolization (TACE) for hepatocellular carcinoma. METHODS: From 2005 to 2015, 2219 TACE procedures were performed in 906 patients in our hospital. Iatrogenic arterial injury occurred during 38 TACE procedures (sessions) in 35 patients (24 men, 11 women; mean age 71.8 years). The incidence of arterial injury was 1.7%. We evaluated the characteristics of arterial injury, and evaluated the risk factors for incomplete recanalization of the injured artery at follow-up angiography conducted after 1-11 months (mean 102...
May 10, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28492407/the-spleen-not-taken-differences-in-management-and-outcomes-of-blunt-splenic-injuries-in-teenagers-cared-for-by-adult-and-pediatric-trauma-teams-in-a-single-institution
#18
Sean O'Connor, Andrea N Doud, Leah M Sieren, Preston R Miller, Kristen A Zeller
BACKGROUND: Non-operative management (NOM) of blunt splenic injury, initially touted for the care of pediatric patients, has become the standard of care for stable trauma patients of all ages. In our institution, trauma patients <16 years old are managed by the pediatric surgery service and patients ≥16 years are managed by the adult trauma service. Angioembolization is routinely employed for adults with blunt splenic injury but rarely used for pediatric patients. A retrospective chart review was performed to determine if more liberal use of angioembolization increases the success rate of NOM of blunt splenic injury in adolescents...
May 11, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28491182/aortoenteric-fistulae-temporization-and-treatment-lessons-learned-from-a-multidisciplinary-approach-to-3-patients
#19
Jeffrey Forris Beecham Chick, Jordan C Castle, Kyle J Cooper, Ravi N Srinivasa, Jonathan L Eliason, Nicholas H Osborne, Karen M Kim, Wael E Saad, Minhaj S Khaja
Aortoenteric fistulae are life-threatening conditions characterized by abnormal communications between the aorta and gastrointestinal tract. Aortoenteric fistulae may be characterized by the triad of bleeding, abdominal pain, or a pulsatile abdominal mass. Although hemorrhage is the most common presentation, it does not always occur; thus, patients may present with nonspecific symptoms. Computed tomography angiography findings suggestive of aortoenteric fistulae include ectopic gas within or adjacent to the aorta, discontinuity of the aortic wall, bowel wall thickening, and extravasation of contrast into the bowel...
June 2017: Radiology case reports
https://www.readbyqxmd.com/read/28491165/carbon-dioxide-angiography-and-arterial-embolization-could-successfully-control-postpartum-uterine-hemorrhage-for-the-patient-with-hypersensitivity-to-iodine-compound
#20
Sayaka Kawashita, Masanori Kaneuchi, Daisuke Nakayama, Naoki Fuchi, Yuko Murakami, Kiyonori Miura, Hideaki Masuzaki
Transcatheter arterial embolization has become a common management option for intractable postpartum uterine hemorrhage. Iodinated contrast agents are commonly used for embolotherapy but cannot be used in patients with renal dysfunction or iodine allergy. A 37-year-old woman spontaneously delivered a healthy girl but developed severe postpartum uterine hemorrhage, probably due to placenta accrete. Contrast-enhanced computed tomography revealed extravasation of the iodinated contrast agent into the uterine cavity...
June 2017: Radiology case reports
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