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Extravasation

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https://www.readbyqxmd.com/read/28437839/semicarbazide-sensitive-amine-oxidase-vascular-adhesion-protein-1-inhibition-reduces-lipopolysaccharide-induced-neuroinflammation
#1
Serena Becchi, Alberto Buson, Jonathan Foot, Wolfgang Jarolimek, Bernard W Balleine
BACKGROUND AND PURPOSE: Neuroinflammation is initiated by a variety of stimuli including infections, sepsis, neurodegenerative diseases or traumatic brain injury and if not adequately controlled can lead to various degrees of neuronal damage and behavioural impairment. A critical event in the initial steps of inflammation is neutrophil extravasation. Semicarbazide sensitive amine oxidase (SSAO, also known as vascular adhesion protein 1 or VAP-1) regulates neutrophil adhesion and extravasation...
April 24, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28436416/lpp-is-a-src-substrate-required-for-invadopodia-formation-and-efficient-breast-cancer-lung-metastasis
#2
Elaine Ngan, Konstantin Stoletov, Harvey W Smith, Jessica Common, William J Muller, John D Lewis, Peter M Siegel
We have previously shown that lipoma preferred partner (LPP) mediates TGFβ-induced breast cancer cell migration and invasion. Herein, we demonstrate that diminished LPP expression reduces circulating tumour cell numbers, impairs cancer cell extravasation and diminishes lung metastasis. LPP localizes to invadopodia, along with Tks5/actin, at sites of matrix degradation and at the tips of extravasating breast cancer cells as revealed by intravital imaging of the chick chorioallantoic membrane (CAM). Invadopodia formation, breast cancer cell extravasation and metastasis require an intact LPP LIM domain and the ability of LPP to interact with α-actinin...
April 24, 2017: Nature Communications
https://www.readbyqxmd.com/read/28435674/the-three-rs-recruitment-retention-and-residence-of-leukocytes-in-the-liver
#3
REVIEW
Hayley A McNamara, Ian A Cockburn
The composition of leukocytes in the liver is highly distinct from that of the blood and lymphoid organs. In particular, the liver is highly enriched in non-conventional T cells such as natural killer T (NKT) cells, γδ T cells and mucosal-associated invariant T cells. In addition, there are significant populations of tissue-resident NK cells (or innate lymphoid cells (ILC1)) and memory CD8(+) T cells. These cells are joined in conditions of inflammation by neutrophils, monocytes and macrophages. In recent years a multitude of studies have generated insights into how these cells arrest, move and remain resident in the liver...
December 2016: Clinical & Translational Immunology
https://www.readbyqxmd.com/read/28434951/role-of-crf1-receptor-in-post-incisional-plasma-extravasation-and-nociceptive-responses-in-mice
#4
Asunción Romero, Juan-Antonio García-Carmona, María-Luisa Laorden, Margarita M Puig
The corticotropin-releasing factor (CRF) is involved in a number of physiological functions including pain perception. The purpose of this study was to evaluate the role of CRF1 receptor in the long-lasting post-surgical changes in somatic nociceptive thresholds and in local inflammatory responses, using genetically engineered mice lacking functional CRF1 receptor. Animals underwent a plantar incision under anaesthesia with remifentanil (80μg/kg s.c.) and sevoflurane. Mechanical thresholds (von Frey) and plasma extravasation (Evan's blue) were evaluated at different time points...
April 20, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/28429083/intravenous-treprostinil-infusion-via-a-fully-implantable-pump-for-pulmonary-arterial-hypertension
#5
Ralf Ewert, Manuel J Richter, Regina Steringer-Mascherbauer, Ekkehard Grünig, Tobias J Lange, Christian F Opitz, Christian Warnke, Hossein-Ardeschir Ghofrani
OBJECTIVES: Parenteral prostanoids infused via external pumps are well-established pulmonary arterial hypertension (PAH) treatments. However, local side-effects and systemic infections restrict their use. The purpose of this study was to investigate the safety of a fully implantable treprostinil infusion pump (LENUS Pro(®)) in patients with PAH. METHODS: Thirty patients with PAH undergoing pump implantation (with stable PAH therapy for ≥3 weeks pre-implantation) were included in this prospective, multicenter, observational study (NCT01979822)...
April 20, 2017: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
https://www.readbyqxmd.com/read/28428349/toll-like-receptor-4-mediates-hemorrhagic-transformation-after-delayed-tissue-plasminogen-activator-administration-in-in-situ-thromboembolic-stroke
#6
Alicia García-Culebras, Sara Palma-Tortosa, Ana Moraga, Isaac García-Yébenes, Violeta Durán-Laforet, Maria I Cuartero, Juan de la Parra, Ana L Barrios-Muñoz, Jaime Díaz-Guzmán, Jesús M Pradillo, María A Moro, Ignacio Lizasoain
BACKGROUND AND PURPOSE: Hemorrhagic transformation is the main complication of revascularization therapies after stroke. Toll-like receptor 4 (TLR4) is implicated in cerebral damage and inflammation in stroke. This study was designed to determine the role of TLR4 in hemorrhagic transformation development after tissue plasminogen activator (tPA) administration. METHODS: Mice expressing (TLR4(+/+)) or lacking functional TLR4 (TLR4(-)(/-)) were subjected to middle cerebral artery occlusion using an in situ thromboembolic model by thrombin injection into the middle cerebral artery, and tPA (10 mg/kg) was administered 20 minutes or 3 hours after ischemia...
April 20, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28426929/exerting-enhanced-permeability-and-retention-effect-driven-delivery-by-ultrafine-iron-oxide-nanoparticles-with-t1-t2-switchable-magnetic-resonance-imaging-contrast
#7
Liya Wang, Jing Huang, Hongbo Chen, Hui Wu, Yaolin Xu, Yuancheng Li, Hong Yi, Yongqiang Andrew Wang, Lily Yang, Hui Mao
The poor delivery efficiency remains a major challenge in nanomaterial based tumor targeted imaging and drug delivery. This work demonstrated a strategy to improve nanoparticle delivery and intratumoral distribution using a sub-5 nm (3.5 nm core size) ultrafine iron oxide nanoparticles (uIONPs) that can easily extravasate from the tumor vasculature and readily diffuse into the tumor tissue compared to iron oxide nanoparticles (IONP) with larger sizes, followed by self-assembling in the acidic tumor interstitial space to limit their re-entering the circulation...
April 20, 2017: ACS Nano
https://www.readbyqxmd.com/read/28421908/extravasating-uterine-pseudoaneurysm-a-rare-cause-of-postpartum-haemorrhage
#8
Sang Wook Yi
Postpartum haemorrhage (PPH) remains one of the leading causes of maternal death worldwide and can be classified as either immediate (primary) or delayed (secondary) according to the onset time - before or after 24 hours postpartum. Uterine pseudoaneurysm is a rare cause of PPH that has been suggested to arise from abnormal vascular regression and a recurrent vascular healing state, such as a vascular stricture and relaxation with thrombin deposits after placental expulsion. With advances in multidetector computed tomography, 3D-computed tomography with angiography can aid in identifying the location and originating vessels of the pseudoaneurysm via fast and clear 3D images...
May 2017: Journal of Obstetrics and Gynaecology: the Journal of the Institute of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/28421532/matrix-metalloproteinase-8-inhibition-prevents-disruption-of-blood-spinal-cord-barrier-and-attenuates-inflammation-in-rat-model-of-spinal-cord-injury
#9
Hemant Kumar, Min-Jae Jo, Hyemin Choi, Manjunatha S Muttigi, Seil Shon, Byung-Joo Kim, Soo-Hong Lee, In-Bo Han
After spinal cord injury (SCI), tight junction (TJ) protein degradation increases permeability and disrupts the blood-spinal cord barrier (BSCB). The BSCB is primarily formed of endothelial cell, which forms a specialized tight seal due to the presence of TJs. BSCB disruption after SCI allows neutrophil infiltration. Matrix metalloproteinase (MMP)-8 is believed to be mainly expressed by neutrophils and is quickly released upon neutrophil activation. Here, we determined whether MMP-8 is involved in the TJ protein degradation in endothelial cells and also determined its role in the neuroinflammation after SCI...
April 18, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28420512/managing-vulvovaginal-hematoma-by-arterial-embolization-as-first-line-hemostatic-therapy
#10
Kenjiro Takagi, Keiko Akashi, Isao Horiuchi, Eishin Nakamura, Koki Samejima, Junko Ushijima, Tomohisa Okochi, Kohei Hamamoto, Keisuke Tanno
OBJECTIVE: A puerperal vulvovaginal hematoma may continue to grow after a surgical procedure and may require blood transfusion. Thus, we selected arterial embolization for hemostasis as the first-line management in two cases of large vulvovaginal hematoma. MATERIALS AND METHODS: Case 1 was a 32-year-old pregnant woman. After delivery, a 10-cm vulvar hematoma developed. An enhanced computed tomography (CT) scan revealed active bleeding. Arterial embolization was performed and complete hemostasis was obtained...
April 2017: Taiwanese Journal of Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28420210/predictors-of-active-extravasation-and-complications-after-conventional-angiography-for-acute-intraabdominal-bleeding
#11
Zachary M Haber, Hearns W Charles, Joseph P Erinjeri, Amy R Deipolyi
Conventional angiography is used to evaluate and treat possible sources of intraabdominal bleeding, though it may cause complications such as contrast-induced nephropathy (CIN). The study's purpose was to identify factors predicting active extravasation and complications during angiography for acute intraabdominal bleeding. All conventional angiograms for acute bleeding (January 2013-June 2015) were reviewed retrospectively, including 75 angiograms for intraabdominal bleeding in 70 patients. Demographics, comorbidities, vital signs, complications within one month, and change in hematocrit (ΔHct) and fluids and blood products administered over the 24 h prior to angiography were recorded...
April 18, 2017: Journal of Clinical Medicine
https://www.readbyqxmd.com/read/28419109/polymorphisms-in-the-selectin-gene-cluster-are-associated-with-fertility-and-survival-time-in-a-population-of-holstein-friesian-cows
#12
Xing Chen, Shujun Zhang, Zhangrui Cheng, Jessica S Cooke, Dirk Werling, D Claire Wathes, Geoffrey E Pollott
Selectins are adhesion molecules, which mediate attachment between leucocytes and endothelium. They aid extravasation of leucocytes from blood into inflamed tissue during the mammary gland's response to infection. Selectins are also involved in attachment of the conceptus to the endometrium and subsequent placental development. Poor fertility and udder health are major causes for culling dairy cows. The three identified bovine selectin genes SELP, SELL and SELE are located in a gene cluster. SELP is the most polymorphic of these genes...
2017: PloS One
https://www.readbyqxmd.com/read/28412475/potential-anti-inflammatory-effect-of-lqfm-021-in-carrageenan-induced-inflammation-the-role-of-nitric-oxide
#13
Iziara F Florentino, Daiany P B Silva, Dayane M Silva, Carina Sofia Cardoso, André L E Moreira, Clayton L Borges, Célia M de A Soares, Pablinny M Galdino, Luciano M Lião, Paulo C Ghedini, Ricardo Menegatti, Elson A Costa
The pyrazole compound LQFM-021 exhibits vasorelaxant, antinociceptive and anti-inflammatory activities. Furthermore, it has low toxicity, indicating that this compound may be considered to be a good prototype for the development of new analgesic/anti-inflammatory drugs. Therefore, the aim of this study was to investigate the potential anti-inflammatory activity of LQFM-021 using a model of carrageenan-induced inflammation as well as the mechanism of action and role of nitric oxide in this effect. Acute treatments with LQFM-021 (30 and 60 mg/kg p...
April 12, 2017: Nitric Oxide: Biology and Chemistry
https://www.readbyqxmd.com/read/28412371/the-anti-inflammatory-effect-of-tramadol-in-the-temporomandibular-joint-of-rats
#14
Simone Monaliza S Lamana, Marcelo H Napimoga, Ana Paula Camatta Nascimento, Fabiana F Freitas, Daniele R de Araujo, Mariana S Quinteiro, Cristina G Macedo, Carlos L Fogaça, Juliana T Clemente-Napimoga
Tramadol is a centrally acting analgesic drug able to prevent nociceptor sensitization when administered into the temporomandibular joint (TMJ) of rats. The mechanism underlying the peripheral anti-inflammatory effect of tramadol remains unknown. This study demonstrated that intra-TMJ injection of tramadol (500µg/TMJ) was able to inhibit the nociceptive response induced by 1.5% formalin or 1.5% capsaicin, suggesting that tramadol has an antinociceptive effect, acting directly on the primary nociceptive neurons activating the nitric oxide/cyclic guanosine monophosphate signaling pathway...
April 12, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28411087/pediatric-extravasation-injury-management-a-survey-comparing-10-hospitals
#15
Daniel Ching, Kai Yuen Wong
No abstract text is available yet for this article.
March 18, 2017: Pediatrics and Neonatology
https://www.readbyqxmd.com/read/28408152/cellular-determinants-and-microenvironmental-regulation-of-prostate-cancer-metastasis
#16
REVIEW
Kiera Rycaj, Hangwen Li, Jianjun Zhou, Xin Chen, Dean G Tang
Metastasis causes more than 90% of cancer-related deaths and most prostate cancer (PCa) patients also die from metastasis. The 'metastatic cascade' is a complex biological process that encompasses tumor cell dissociation (from the primary tumor), local invasion, intravasation, transport in circulation, extravasation, colonization, and overt growth in end organs. It has become clear that successful metastasis not only involves many tumor cell-intrinsic properties but also depends on productive interactions between cancer cells and the tumor microenvironment...
April 11, 2017: Seminars in Cancer Biology
https://www.readbyqxmd.com/read/28405492/a-rare-complication-of-central-venous-catheter-extravasation-in-a-preterm-neonate-hemidiaphragmatic-paralysis
#17
C Hobson, D Dubillot, H Lardy, D Sirinelli, E Saliba, E Lopez
We report a case of a preterm neonate born at 26 weeks' of gestation diagnosed with unilateral diaphragmatic paralysis. This paralysis was a consequence of a phrenic nerve injury due to extravasation of hyperosmolar parenteral nutrition fluid in the upper thorax. Chest X-rays and ultrasonography confirmed the diagnosis. The neonate was treated with prolonged respiratory support and did not require surgical treatment. This report describes a case of hemidiaphragmatic paralysis as a complication of central venous catheter insertion...
April 2017: American Journal of Perinatology Reports
https://www.readbyqxmd.com/read/28404865/dual-angiopoietin-2-and-vegfa-inhibition-elicits-antitumor-immunity-that-is-enhanced-by-pd-1-checkpoint-blockade
#18
Martina Schmittnaegel, Nicolò Rigamonti, Ece Kadioglu, Antonino Cassará, Céline Wyser Rmili, Anna Kiialainen, Yvonne Kienast, Hans-Joachim Mueller, Chia-Huey Ooi, Damya Laoui, Michele De Palma
Pathological angiogenesis is a hallmark of cancer and a therapeutic target. Vascular endothelial growth factor A (VEGFA) and angiopoietin-2 (ANGPT2; also known as ANG2) are proangiogenic cytokines that sustain tumor angiogenesis and limit antitumor immunity. We show that combined ANGPT2 and VEGFA blockade by a bispecific antibody (A2V) provided superior therapeutic benefits, as compared to the single agents, in both genetically engineered and transplant tumor models, including metastatic breast cancer (MMTV-PyMT), pancreatic neuroendocrine tumor (RIP1-Tag2), and melanoma...
April 12, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/28404563/haemorrhagic-cholecystitis-in-a-newly-anticoagulated-patient
#19
Ned Kinnear, Derek Barry Hennessey, Rebecca Thomas
A 74-year-old man undergoing rehabilitation after pneumonia developed right upper quadrant abdominal pain. Five days earlier he had been commenced on apixaban for a new diagnosis of atrial fibrillation. Ultrasound and CT scans revealed an acalculous grossly thickened gallbladder, with high attenuation non-echogenic material both within and surrounding the structure. Active contrast extravasation was seen at the neck. On laparotomy, a perforated internally bleeding gallbladder containing a single calculus was found, with significant free blood within the abdomen...
April 12, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28398646/fluorescein-isothiocyanate-fitc-dextran-extravasation-as-a-measure-of-blood-brain-barrier-permeability
#20
Reka Natarajan, Nicole Northrop, Bryan Yamamoto
The blood-brain barrier (BBB) is formed in part by vascular endothelial cells that constitute the capillaries and microvessels of the brain. The function of this barrier is to maintain homeostasis within the brain microenvironment and buffer the brain from changes in the periphery. A dysfunction of the BBB would permit circulating molecules and pathogens typically restricted to the periphery to enter the brain and interfere with normal brain function. As increased permeability of the BBB is associated with several neuropathologies, it is important to have a reliable and sensitive method that determines BBB permeability and the degree of BBB disruption...
April 10, 2017: Current Protocols in Neuroscience
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