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Vein occlusion

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https://www.readbyqxmd.com/read/28079982/recombinant-soluble-apyrase-apt102-inhibits-thrombosis-and-intimal-hyperplasia-in-vein-grafts-without-adversely-affecting-hemostasis-or-re-endothelialization
#1
Y Ji, O Adeola, T L Strawn, S S Jeong, R Chen, W P Fay
BACKGROUND: Occlusion of vein grafts (VGs) after bypass surgery due to thrombosis and intimal hyperplasia (IH) is a major clinical problem. Apyrases are enzymes that scavenge extracellular ATP and ADP and promote adenosine formation at sites of vascular injury and hence have potential to inhibit vein graft pathology. OBJECTIVES: We examined the effects of recombinant soluble human apyrase, APT102, on platelets, smooth muscle cells (SMCs), and endothelial cells (ECs) in vitro and thrombosis and IH in murine VGs...
January 12, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28079801/acute-necrotizing-retinal-vasculitis-as-onset-of-systemic-lupus-erythematosus-a-case-report
#2
Simeon Monov, Ruska Hristova, Rositza Dacheva, Reni Toncheva, Russka Shumnalieva, Viara Shoumnalieva-Ivanova, Daniela Monova
RATIONALE: Systemic lupus erythematosus (SLE) is a complex autoimmune disease characterized by autoantibody production, complement activation, and deposition of immune complexes in tissues and organs. SLE can involve any region of the visual system. Although ocular manifestations are not part of the classification criteria for SLE, they can be observed in up to one-third of the patients with SLE. They are rarely reported at the time of disease onset. Retinal vasculitis is usually associated with active generalized disease...
January 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28079651/branch-retinal-vein-occlusion-secondary-to-a-retinal-arteriolar-macroaneurysm-a-novel-mechanism-supported-by-multimodal-imaging
#3
Yi Chen, Simon D M Chen, Fred K Chen
BACKGROUND/PURPOSE: To report a case of a branch retinal vein occlusion secondary to a retinal arteriolar macroaneurysm (RAM). METHODS: Retrospective case report describing examination findings, treatment outcome and unique multimodal imaging features demonstrated on fluorescein angiography, optical coherence tomography, optical coherence tomography angiography and adaptive optics photography of the retinal vessels and RAM. RESULTS: A 61-year-old man presented with 20/200 vision in the right eye because of a branch retinal vein occlusion secondary to a RAM...
January 10, 2017: Retinal Cases & Brief Reports
https://www.readbyqxmd.com/read/28073989/patency-of-the-vein-of-labb%C3%A3-after-venous-stenting-of-the-transverse-and-sigmoid-sinuses
#4
Daniel M S Raper, Dale Ding, Ching-Jen Chen, Thomas J Buell, R Webster Crowley, Kenneth C Liu
BACKGROUND: Venous sinus stenting is an emerging treatment for patients with idiopathic intracranial hypertension and evidence of venous stenosis. Stents placed across the transverse and sigmoid sinuses often cover the vein of Labbé (VOL), a major anastomotic vein draining the cerebral hemisphere. The patency of the VOL after stenting and its clinical implications are poorly understood. METHODS: A retrospective analysis was performed of a prospectively collected database of patients undergoing venous sinus stenting...
January 10, 2017: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/28073881/combined-central-retinal-artery-and-vein-occlusion-in-lupus
#5
Swapnil Madhukar Parchand, Vempuluru Sai Vijitha, Durga Prasanna Misra
No abstract text is available yet for this article.
January 10, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28060135/melanocytoma-or-juxtapapillary-melanoma
#6
Brandon J Baartman, Baseer Ahmad, Sunil Srivastava, Stephen Jones, Arun D Singh
PURPOSE: To report the case of a melanocytoma of the optic disc leading to severe vision loss, raising concern for possible malignant transformation and optic nerve infiltration. METHODS: Case report. RESULTS: A 36-year-old Arabic woman presented to an outside facility with severe vision loss and a clinical picture concerning for optic neuritis with central retinal vein occlusion. On referral to the authors' institution 1 month after initial presentation, the vision of the patient was no light perception in the affected eye, and examination revealed the presence of a pigmented lesion adjacent to the nerve...
January 2, 2017: Retinal Cases & Brief Reports
https://www.readbyqxmd.com/read/28058155/bilateral-papillophlebitis-in-a-patient-with-mutation-of-metilenetetrahydrofolate-reductase-enzyme
#7
Hüseyin Güzel, Banu Turgut Öztürk, Şansal Gedik, Berker Bakbak, Abdullah Beyoğlu, Nadir Koçak
Papillophlebitis is known as central retinal vein occlusion seen in young patients. It usually presents as unilateral optic disc edema with cotton wool spots and hemorrhage in the peripapillary region. As it may be due to many autoimmune and inflammatory causes, a thorough systemic evaluation of the patient is warranted. In this case report we describe a bilateral, simultaneous papillophlebitis case thought to be related to hyperhomocysteinemia secondary to C677T polymorphism of methylenetetrahyrofolate reductase enzyme...
August 2016: Turkish Journal of Ophthalmology
https://www.readbyqxmd.com/read/28054897/thrombosis-of-the-right-internal-jugular-vein-is-not-a-contraindication-to-ambulatory-veno-venous-extracorporeal-membrane-oxygenation-with-a-bicaval-dual-lumen-single-cannula-system
#8
Anthony Kronfli, Chetan Pasrija, Aakash Shah, Mehrdad Ghoreishi, Jose P Garcia, Si M Pham, Pablo G Sanchez, Zachary N Kon
BACKGROUND: Veno-venous extracorporeal membrane oxygenation (VV-ECMO) is an ever-emerging method of managing respiratory failure in patients who are refractory to conventional mechanical ventilatory support. An increasingly common method of cannulation involves placement of a bicaval dual-lumen, single cannula via the right internal jugular (IJ) vein. Thrombus in this vein has been considered a contraindication for cannula placement. CASE REPORT: A 45-year-old Hispanic male presented with bleomycin-induced respiratory failure resulting in acute respiratory distress syndrome (ARDS)...
14, 2016: Heart Surgery Forum
https://www.readbyqxmd.com/read/28053503/assessment-of-ischemia-in-acute-central-retinal-vein-occlusion-from-inner-retinal-reflectivity-on-spectral-domain-optical-coherence-tomography
#9
David J Browning, Omar S Punjabi, Chong Lee
PURPOSE: To determine the relationship between different spectral domain optical coherence tomography (SD-OCT) signs of retinal ischemia in acute central retinal vein occlusion (CRVO) and whether they predict anterior segment neovascularization (ASNV). DESIGN: Retrospective, observational study. SUBJECTS: Thirty-nine consecutive patients with acute CRVO and 12 months of follow-up. METHODS: We graded baseline SD-OCTs for increased reflectivity of the inner retina, loss of definition of inner retinal layers, presence of a prominent middle-limiting membrane (p-MLM) sign, and presence of paracentral acute middle maculopathy (PAMM)...
2017: Clinical Ophthalmology
https://www.readbyqxmd.com/read/28049941/caspase-independent-apoptosis-induced-by-reperfusion-following-ischemia-without-bile-duct-occlusion-in-rat-liver
#10
Nobuaki Matsui, Rie Yoshioka, Asako Nozawa, Naonobu Kobayashi, Yukari Shichijo, Tadatoshi Yoshikawa, Masaaki Akagi
The contribution of caspases to hepatic ischemia/reperfusion (I/R)-induced apoptosis has not been completely understood yet. Several studies have demonstrated increased caspase activity during I/R and the protective effect of caspase inhibitors against I/R injuries. However, reports with opposing results also exist. Herein, we examined the contribution of caspases to the I/R-induced hepatic apoptosis in rats using caspase inhibitors and specific substrates of caspases. Hepatic I/R was induced via a 2-h occlusion of the portal vein and the hepatic artery, without conducting bile duct occlusion...
2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28045864/bilateral-central-retinal-vein-occlusions-in-a-young-patient-with-a-history-of-eosinophilic-pneumonia-and-thalamic-stroke
#11
Gina Yu, Peng Sun, Tavé van Zyl, Rachel Tandias, Jorge G Arroyo
PURPOSE: To describe a case of a central retinal vein occlusion in a young patient with a history of eosinophilic pneumonia. METHODS: A retrospective case report of a 45-year-old woman with acute painless vision loss for 9 days after multiple episodes of eosinophilic pneumonia and thalamic stroke. Fluorescein angiography, spectral domain optical coherence tomography, and clinical examination were performed. She was then treated with intravitreal bevacizumab and pan-retinal photocoagulations...
December 29, 2016: Retinal Cases & Brief Reports
https://www.readbyqxmd.com/read/28045789/imaging-and-measurement-of-the-preretinal-space-in-vitreomacular-adhesion-and-vitreomacular-traction-by-a-new-spectral-domain-optical-coherence-tomography-analysis
#12
Marcin Stopa, Elżbieta Marciniak, Piotr Rakowicz, Agnieszka Stankiewicz, Tomasz Marciniak, Adam Dąbrowski
PURPOSE: To evaluate a new method for volumetric imaging of the preretinal space (also known as the subhyaloid, subcortical, or retrocortical space) and investigate differences in preretinal space volume in vitreomacular adhesion (VMA) and vitreomacular traction (VMT). METHODS: Nine patients with VMA and 13 with VMT were prospectively evaluated. Automatic inner limiting membrane line segmentation, which exploits graph search theory implementation, and posterior cortical vitreous line segmentation were performed on 141 horizontal spectral domain optical coherence tomography B-scans per patient...
December 30, 2016: Retina
https://www.readbyqxmd.com/read/28033697/management-of-retinal-vein-occlusion-who-is-responsible
#13
Mohamadreza Aghamirsalim, Reza Sorbi, Mohammadreza Naderian, Sudha Cugati, Marianne Levon Shahsuvaryan, Maryam Ghazizadeh Hashemi
Retinal vein occlusion (RVO) is a common retinal vascular occlusive disorder and is associated with a variety of systemic risk factors. The aim of this study was to investigate whether the underlying diseases were evaluated and managed appropriately by ophthalmologists. We performed a study of 1344 patients with retinal vein occlusion (RVO). Patients were evaluated with a questionnaire including ten closed questions to determine whether ophthalmologists evaluated and informed their patients about the underlying systemic diseases...
November 2016: Acta Medica Iranica
https://www.readbyqxmd.com/read/28033234/associations-between-macular-edema-and-circulatory-status-in-eyes-with-retinal-vein-occlusion-an-adaptive-optics-scanning-laser-ophthalmoscopy-study
#14
Yuto Iida, Yuki Muraoka, Akihito Uji, Sotaro Ooto, Tomoaki Murakami, Kiyoshi Suzuma, Akitaka Tsujikawa, Shigeta Arichika, Ayako Takahashi, Yuko Miwa, Nagahisa Yoshimura
PURPOSE: To investigate associations between parafoveal microcirculatory status and foveal pathomorphology in eyes with macular edema (ME) secondary to retinal vein occlusion (RVO). METHODS: Ten consecutive patients (10 eyes) with acute retinal vein occlusion were enrolled, 9 eyes of which received intravitreal ranibizumab (IVR) injections. Foveal morphologic changes were examined via optical coherence tomography (OCT), and parafoveal circulatory status was assessed via adaptive optics scanning laser ophthalmoscopy (AO-SLO)...
December 28, 2016: Retina
https://www.readbyqxmd.com/read/28032562/a-novel-secure-transfixing-blood-vessel-occluder-comparison-with-the-hemoclip-in-the-porcine-model
#15
Arnold Miller, Nir Lilach, Ana-Maria Botero-Anug, Udi Willenz, Raanan Miller
BACKGROUND: Secure vessel occlusion is critical to the success of all surgical and interventional procedures. The purpose of this study was to compare in vivo the use of the Amsel Vessel Occluder (AVO), a novel occlusion clip device for secure blood vessel closure, with one of the many commercially available hemoclips, the Ligaclip, in the porcine model. METHODS: Vessel closure of arteries and veins was performed on 10 swine to compare the ease of use, safety, and efficacy of the AVO with the Ligaclip as well as the tissue response at 7 and 30 d...
October 5, 2016: Journal of Surgical Research
https://www.readbyqxmd.com/read/28031700/long-term-results-of-combination-therapy-using-anti-vegf-agents-and-dexamethasone-intravitreal-implant-for-retinal-vein-occlusion-an-investigational-case-series
#16
Michael A Singer, Michael E Jansen, Lyndon Tyler, Paul Woods, Faisal Ansari, Udit Jain, Joshua Singer, Darren Bell, Chelsey Krambeer
BACKGROUND: One limitation of anti-VEGF therapy is the need for monthly retreatment to maintain efficacy. The purpose of this study was to determine the duration of effect in eyes with macular edema (ME) secondary to branch or central retinal vein occlusion (BRVO or CRVO) treated with anti-VEGF therapy plus sustained-release dexamethasone (DEX implant; Ozurdex). MATERIALS AND METHODS: This open-label, interventional case series included 62 eyes with ME due to RVO, central foveal thickness (CFT) >300 μm, and best-corrected visual acuity (BCVA) of 20/40 or worse...
2017: Clinical Ophthalmology
https://www.readbyqxmd.com/read/28031679/elevated-factor-viii-levels-associated-with-acute-graft-occlusion-and-arterial-and-venous-thrombosis-after-off-pump-cabg
#17
Crystal A Kyaw, Pey-Jen Yu, Frank Manetta
Factor VIII is a common acute phase reactant and elevated levels confer an increased risk of thrombosis. Such thrombotic events have been documented in the literature, though to a limited extent. We present the case of a 54-year-old man presenting with a non-Q-wave myocardial infarction who was found to have triple vessel disease and subsequently underwent a 4-vessel coronary artery bypass grafting (CABG). Postoperatively, he was found to have multiple occluded vessels, deep vein thromboses, and a cerebrovascular accident (CVA)...
December 2016: International Journal of Angiology: Official Publication of the International College of Angiology, Inc
https://www.readbyqxmd.com/read/28031670/femoropopliteal-bypass-with-varicose-greater-saphenous-vein
#18
Yun Su Mun, Byung Sun Cho, Je-Ho Jang, Moon-Soo Lee, Oh Sang Kwon
Surgical bypass for peripheral arterial occlusive disease can be performed using different graft materials. Autogenous greater saphenous vein (GSV) is the treatment of choice because of its superior long-term patency. We report a case of femoropopliteal bypass with varicose GSV in a 77-year-old man who was presented with limb ischemia and both varicose veins. We successfully performed bypass with varicose vein. He has been doing well for 15 months after the operation, and a computed tomography angiography of the lower leg, performed on the 15th postoperative month, demonstrated widely patent femoropopliteal bypass graft and no structural change...
December 2016: International Journal of Angiology: Official Publication of the International College of Angiology, Inc
https://www.readbyqxmd.com/read/28030428/outer-retinal-layer-changes-after-dexamethasone-implant-for-central-retinal-vein-occlusion
#19
Maurizio Battaglia Parodi, Pierluigi Iacono, Matteo Scaramuzzi, Francesco Bandello
PURPOSE: To analyze the outer retinal layer changes on spectral-domain optical coherence tomography after dexamethasone implant for the treatment of macular edema secondary to central retinal vein occlusions (CRVO). METHODS: Thirty patients affected by macular edema related to CRVO (8 patients less than 50 years of age with nonischemic CRVO [<50-niCRVO], 12 patients more than 50 years with niCRVO [>50-niCRVO], and 10 patients with ischemic CRVO [iCRVO]) were included in a prospective study...
December 23, 2016: Retina
https://www.readbyqxmd.com/read/28025005/macroscopic-and-histologic-analysis-of-vessel-wall-reaction-after-mechanochemical-endovenous-ablation-using-the-clarivein-oc-device-in-an-animal-model
#20
D Boersma, S T W van Haelst, R R J P van Eekeren, A Vink, M M J P Reijnen, J P P M de Vries, G J de Borst
OBJECTIVE/BACKGROUND: Mechanochemical endovenous ablation (MOCA) has been developed as a tumescentless technique to ablate saphenous veins and to avoid heat induced complications and post-procedural pain. The mechanism of action of MOCA is poorly understood. The present experiments were conducted to determine the effect of MOCA on vein wall injury and sclerosis in an animal model. METHODS: A total of 36 lateral saphenous veins (LSVs) were treated in 18 goats according to the human protocol...
December 23, 2016: European Journal of Vascular and Endovascular Surgery
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