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https://www.readbyqxmd.com/read/29766943/brain-stem-hemangioblastomas-the-seemingly-innocuous-lesion-in-a-perilous-location
#1
Jeena Joseph, Sanjay Behari, Shruti Gupta, Kamlesh Singh Bhaisora, Anish Gandhi, Arun Srivastava, Awadhesh K Jaiswal
Introduction: Hemangioblastomas [75% sporadic, 25% with Von Hippel Lindau (VHL) disease] are highly vascular, benign lesions. The surgical nuances, management, and complication avoidance in brain-stem hemangioblastomas (BHs) have been studied. Material and Methods: Over 18 years, 27(mean age: 29 years; range 15-60 years) consecutive cases of BH underwent microsurgical excision. All patients were assessed clinico-radiologically for neurological deficits and screened for VHL disease...
May 2018: Neurology India
https://www.readbyqxmd.com/read/29765235/fatal-hemoptysis-in-patients-with-advanced-esophageal-cancer-treated-with-apatinib
#2
Wei Wang, Lin Zhang, Yan Xie, Tianchang Zhen, Gongzhang Su, Qi Zang
Targeted therapy is commonly used for treating advanced malignant tumors. Compared with cytotoxic drugs, targeted drugs have the characteristics of good curative results, less adverse effects, and convenient oral administration. Hence, they are especially suitable for patients with cancer who are not able to tolerate chemotherapy. Anti-angiogenic therapy can achieve the objective by inhibiting the formation of new blood vessels in tumors. Apatinib is a novel tyrosine kinase inhibitor targeting the intracellular domain of vascular endothelial growth factor receptor-2...
2018: OncoTargets and Therapy
https://www.readbyqxmd.com/read/29763476/drug-induced-linear-iga-bullous-dermatosis-in-a-patient-with-a-vancomycin-impregnated-cement-spacer
#3
Kelsie Riemenschneider, Daren A Diiorio, John A Zic, Matthew R Livingood, Jo-David Fine, Jennifer G Powers, Jeffrey P Zwerner, Eric Tkaczyk
Linear IgA bullous dermatosis (LABD) is an autoimmune blistering rash caused by IgA autoantibodies against the epidermal basement membrane zone. It commonly is drug induced, often in association with systemic vancomycin. We report a case of a previously healthy 77-year-old man who developed a diffuse macular rash and hemorrhagic bullae on the left leg 10 days after placement of a vancomycin-impregnated cement spacer (VICS) during a revision knee arthroplasty and initiation of postoperative treatment with intravenous (IV) vancomycin...
April 2018: Cutis; Cutaneous Medicine for the Practitioner
https://www.readbyqxmd.com/read/29743683/rivaroxaban-does-not-influence-hemorrhagic-transformation-in-a-diabetes-ischemic-stroke-and-endovascular-thrombectomy-model
#4
Feng-Di Liu, Rong Zhao, Xiao-Yan Feng, Yan-Hui Shi, Yi-Lan Wu, Xiao-Lei Shen, Ge-Fei Li, Yi-Sheng Liu, Ying Zhao, Xin-Wei He, Jia-Wen Yin, Mei-Ting Zhuang, Bing-Qiao Zhao, Jian-Ren Liu
Managing endovascular thrombectomy (ET) in diabetic ischemic stroke (IS) with novel anticoagulants is challenging due to putative risk of intracerebral hemorrhage. The study evaluates increased hemorrhagic transformation (HT) risk in Rivaroxaban-treated diabetic rats post ET. Diabetes was induced in male Sprague-Dawley rats by intraperitoneal injection of 60 mg/kg streptozotocin. After 4-weeks, rats were pretreated orally with 30 mg/kg Rivaroxaban/saline; prothrombin time was monitored. IS and ET was induced after 1 h, by thread-induced transient middle cerebral artery occlusion (tMCAO) that mimicked mechanical ET for proximal MCA occlusion at 60 min...
May 9, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29741715/forward-surgical-team-experience-fste-is-associated-with-increased-confidence-with-combat-surgeon-trauma-skills
#5
D Joshua Mancini, Brian P Smith, Travis M Polk, C William Schwab
Introduction: Little is known regarding the confidence of military surgeons prior to combat zone deployment. Military surgeons are frequently deployed without peers experienced in combat surgery. We hypothesized that forward surgical team experience (FSTE) increases surgeon confidence with critical skill sets. Methods: We conducted a national survey of military affiliated personnel. We used a novel survey instrument that was piloted and validated by experienced military surgeons to collect demographics, education, practice patterns, and confidence parameters for trauma and surgical critical care skills...
May 8, 2018: Military Medicine
https://www.readbyqxmd.com/read/29737222/brain-endothelial-cell-junctions-after-cerebral-hemorrhage-changes-mechanisms-and-therapeutic-targets
#6
Richard F Keep, Anuska V Andjelkovic, Jianming Xiang, Svetlana M Stamatovic, David A Antonetti, Ya Hua, Guohua Xi
Vascular disruption is the underlying cause of cerebral hemorrhage, including intracerebral, subarachnoid and intraventricular hemorrhage. The disease etiology also involves cerebral hemorrhage-induced blood-brain barrier (BBB) disruption, which contributes an important component to brain injury after the initial cerebral hemorrhage. BBB loss drives vasogenic edema, allows leukocyte extravasation and may lead to the entry of potentially neurotoxic and vasoactive compounds into brain. This review summarizes current information on changes in brain endothelial junction proteins in response to cerebral hemorrhage (and clot-related factors), the mechanisms underlying junction modification and potential therapeutic targets to limit BBB disruption and, potentially, hemorrhage occurrence...
January 1, 2018: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/29735342/dabigatran-reduces-endothelial-permeability-through-inhibition-of-thrombin-induced-cytoskeleton-reorganization
#7
Hyun-Jung Choi, Na-Eun Kim, Jayoung Kim, Sunho An, Seung-Hee Yang, Jimin Ha, Sunghee Cho, Il Kwon, Young Dae Kim, Hyo Suk Nam, Ji Hoe Heo
Dabigatran etexilate (DE), a new oral anti-coagulant, is a direct thrombin inhibitor. Clinical trials showed the favorable benefit-to-risk profile of DE compared to warfarin for the prevention of ischemic stroke in patients with atrial fibrillation. Remarkably, patients treated with dabigatran showed reduced rates of intracerebral hemorrhage compared to warfarin. As the breakdown of endothelial barrier integrity is associated with hemorrhagic events and as thrombin increases endothelial permeability, we hypothesized that dabigatran preserves the endothelial barrier by inhibiting thrombin-induced permeability...
April 25, 2018: Thrombosis Research
https://www.readbyqxmd.com/read/29730311/sodium-tanshinone-iia-sulfonate-promotes-endothelial-integrity-via-regulating-ve-cadherin-dynamics-and-rhoa-rock-mediated-cellular-contractility-and-prevents-atorvastatin-induced-intracerebral-hemorrhage-in-zebrafish
#8
Zhong-Yan Zhou, Bin Huang, Shang Li, Xiao-Hui Huang, Jing-Yi Tang, Yiu Wa Kwan, Pui Man Hoi, Simon Ming-Yuen Lee
Impaired vascular integrity leads to serious cerebral vascular diseases such as intracerebral hemorrhage (ICH). In addition, high-dose statin therapy is suggested to cause increased ICH risk due to unclear effects of general inhibition of 3-hydroxy-3-methylglutaryl-CoA reductase (HMGCR) on the vascular system. Here we evaluated the protective effects of sodium tanshinone IIA sulfonate (STS), which has high efficacy and safety in clinical studies of ischemic stroke, by using atorvastatin (Ator) induced ICH zebrafish embryos and human umbilical vein endothelial cells (HUVECs)...
May 3, 2018: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/29713894/fluoxetine-is-neuroprotective-in-early-brain-injury-via-its-anti-inflammatory-and-anti-apoptotic-effects-in-a-rat-experimental-subarachnoid-hemorrhage-model
#9
Hui-Min Hu, Bin Li, Xiao-Dong Wang, Yun-Shan Guo, Hua Hui, Hai-Ping Zhang, Biao Wang, Da-Geng Huang, Ding-Jun Hao
Fluoxetine, an anti-depressant drug, has recently been shown to provide neuroprotection in central nervous system injury, but its roles in subarachnoid hemorrhage (SAH) remain unclear. In this study, we aimed to evaluate whether fluoxetine attenuates early brain injury (EBI) after SAH. We demonstrated that intraperitoneal injection of fluoxetine (10 mg/kg per day) significantly attenuated brain edema and blood-brain barrier (BBB) disruption, microglial activation, and neuronal apoptosis in EBI after experimental SAH, as evidenced by the reduction of brain water content and Evans blue dye extravasation, prevention of disruption of the tight junction proteins zonula occludens-1, claudin-5, and occludin, a decrease of cells staining positive for Iba-1, ED-1, and TUNEL and a decline in IL-1β, IL-6, TNF-α, MDA, 3-nitrotyrosine, and 8-OHDG levels...
April 30, 2018: Neuroscience Bulletin
https://www.readbyqxmd.com/read/29681849/danhong-injection-combined-with-t-pa-improves-thrombolytic-therapy-in-focal-embolic-stroke
#10
Min Li, Jing Zhou, Weifeng Jin, Xiaohong Li, Yuyan Zhang
Background: Hemorrhagic transformation, neurotoxicity, short treatment time windows, and other defects are considered as the major limitations for the thrombolytic therapy. This study is devoted to figure out whether Danhong injection (DHI) combined with tissue-plasminogen activator (t-PA) could extend the treatment time windows and ameliorate brain injury, hemorrhagic complication and BBB disruption after focal embolic stroke. Methods: In vitro , the combined concentrations of DHI and t-PA were added to wells reacted with plasminogen and D-Val-Leu-Lys-AMC...
2018: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29661286/comparison-of-zone-3-resuscitative-endovascular-balloon-occlusion-of-the-aorta-and-the-abdominal-aortic-and-junctional-tourniquet-in-a-model-of-junctional-hemorrhage-in-swine
#11
Jason M Rall, Theodore T Redman, Elliot M Ross, Jonathan J Morrison, Joseph K Maddry
BACKGROUND: Traumatic injuries to the pelvis and high junctional injuries are difficult to treat in the field; however, Resuscitative Endovascular Balloon Occlusion of the Aorta (REBOA) and the Abdominal Aortic and Junctional Tourniquet (AAJT) constitute two promising treatment modalities. The aim of this study is to use a large animal model of pelvic hemorrhage to compare the survival, hemostatic, hemodynamic, and metabolic profile of both techniques. METHODS: Yorkshire swine (n = 10, 70-90 kg) underwent general anesthesia, instrumentation, and surgical isolation of the femoral artery...
June 2018: Journal of Surgical Research
https://www.readbyqxmd.com/read/29649465/therapeutic-time-window-and-regulation-of-autophagy-by-mild-hypothermia-after-intracerebral-hemorrhage-in-rats
#12
Feifei Song, Cen Guo, Yang Geng, Xuqing Wu, Wei Fan
Although recent studies have shown that mild hypothermia has neuroprotective effects on intracerebral hemorrhage (ICH), the therapeutic time window of the therapy and the role of autophagy as a potential neuroprotective mechanism remain unclear. This study was aimed to investigate the appropriate time window of mild hypothermia and the regulation of autophagy during the treatment in a rat model of autologous blood-injected ICH injury. The rats were divided into Sham, normothermic (NT) and hypothermic (HT) groups...
April 9, 2018: Brain Research
https://www.readbyqxmd.com/read/29643467/potential-orphan-drug-therapy-of-intravesical-liposomal-onabotulinumtoxin-a-for-ketamine-induced-cystitis-by-mucosal-protection-and-anti-inflammation-in-a-rat-model
#13
Wei-Chia Lee, Chia-Hao Su, You-Lin Tain, Cheng-Nan Tsai, Chun-Chieh Yu, Yao-Chi Chuang
Ketamine abusers may develop ulcerative cystitis and severe lower urinary tract symptoms, which is a medical dilemma. Recently, researchers have found the endemic of ketamine-induced cystitis worldwide. The intravesical administration of liposome-encapsulated onabotulinumtoxinA (Lipotoxin) might facilitate the healing of the damaged urothelium from liposomes, and reduce the urinary symptoms by onabotulinumtoxinA-induced chemo-denervation. Using female Sprague-Dawley rats, we investigated the effects of Lipotoxin on ketamine-induced cystitis...
April 11, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29622432/sirtuin-5-as-a-novel-target-to-blunt-blood-brain-barrier-damage-induced-by-cerebral-ischemia-reperfusion-injury
#14
Candela Diaz-Cañestro, Mario Merlini, Nicole R Bonetti, Luca Liberale, Patricia Wüst, Sylvie Briand-Schumacher, Jan Klohs, Sara Costantino, Melroy Miranda, Gabriele Schoedon-Geiser, Gerd A Kullak-Ublick, Alexander Akhmedov, Francesco Paneni, Jürg H Beer, Thomas F Lüscher, Giovanni G Camici
BACKGROUND: In acute ischemic stroke (AIS) patients, impaired blood-brain barrier (BBB) integrity is associated with hemorrhagic transformation and worsened outcome. Yet, the mechanisms underlying these relationships are poorly understood and consequently therapeutic strategies are lacking. This study sought to determine whether SIRT5 contributes to BBB damage following I/R brain injury. METHODS AND RESULTS: SIRT5 knockout (SIRT5-/- ) and wild type (WT) mice underwent transient middle cerebral artery (MCA) occlusion (tMCAO) followed by 48h of reperfusion...
June 1, 2018: International Journal of Cardiology
https://www.readbyqxmd.com/read/29618114/management-of-a-previously-coiled-anterior-cerebral-artery-aneurysm-in-a-child-3-dimensional-operative-video
#15
Vijay Agarwal, Daniel L Barrow
We present the case of an 11-yr-old male who originally presented to an outside hospital with subarachnoid hemorrhage. He was discovered at that time to have a ruptured right A1-A2 junction anterior cerebral artery aneurysm just proximal to the anterior communicating artery. He underwent endovascular coiling at the outside center. While recovering at a rehabilitation center, he had a rehemorrhage and acute neurological decline. He was transferred to our service, where he underwent surgical exploration and clip reconstruction of what appeared to be a pseudoaneurysm...
March 30, 2018: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29615933/dexamethasone-protects-against-tourniquet-induced-acute-ischemia-reperfusion-injury-in-mouse-hindlimb
#16
Ryan M Corrick, Huiyin Tu, Dongze Zhang, Aaron N Barksdale, Robert L Muelleman, Michael C Wadman, Yu-Long Li
Extremity injuries with hemorrhage have been a significant cause of death in civilian medicine and on the battlefield. The use of a tourniquet as an intervention is necessary for treatment to an injured limb; however, the tourniquet and subsequent release results in serious acute ischemia-reperfusion (IR) injury in the skeletal muscle and neuromuscular junction (NMJ). Much evidence demonstrates that inflammation is an important factor to cause acute IR injury. To find effective therapeutic interventions for tourniquet-induced acute IR injuries, our current study investigated effect of dexamethasone, an anti-inflammatory drug, on tourniquet-induced acute IR injury in mouse hindlimb...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29605278/rare-case-of-diffuse-spinal-arachnoiditis-following-a-complicated-vertebral-artery-dissection
#17
Elias Atallah, Sophia Dang, Sage Rahm, James Feghali, Chalouhi Nohra, Stavropoula Tjoumakaris, Robert H Rosenwasser, Hekmat Zarzour, Nabeel Herial, Michael Reid Gooch, Pascal Jabbour
Spinal arachnoiditis (SA) is an extremely rare and delayed complication of subarachnoid hemorrhage (SAH). Little is known about its underlying pathogenesis and subsequent clinical course. A middle-aged patient presented with the worst headache of her life and a grade 3 SAH of the basal-cisterns and posterior fossa was identified on Computed Tomography scans (CT). Angiography revealed a ruptured dissecting aneurysm of the left vertebral artery (VA-V4), as well as an unruptured left Anterior Cerebral Artery (ACA-A1) aneurysm...
March 28, 2018: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/29584497/initial-analysis-of-archived-non-human-primate-frontal-and-rear-impact-data-from-the-biodynamics-data-resource
#18
Ardyn V Olszko, Christine M Beltran, Kimberly B Vasquez, James S McGhee, Valeta C Chancey, Narayan Yoganandan, Frank A Pintar, Jamie L Baisden
OBJECTIVE: The research objective was to conduct an initial analysis of non-human primate (NHP) data from frontal and rear impact events archived in the Biodynamics Data Resource (BDR) records of the Naval Biodynamics Laboratory (NBDL). These rare data, collected between 1973 and 1989, will inform the safety community of upper-end tolerance limits of NHP and may be related to severe crash scenarios. METHODS: Data from frontal and rear acceleration tests to 93 macaque NHP were examined...
February 28, 2018: Traffic Injury Prevention
https://www.readbyqxmd.com/read/29576903/ruptured-posterior-cerebral-artery-aneurysm-presenting-with-a-contralateral-cranial-nerve-iii-palsy-a-case-report
#19
Nauman S Chaudhry, Denise Brunozzi, Sophia F Shakur, Fady T Charbel, Ali Alaraj
Background: Posterior cerebral artery aneurysms can frequently present with an ipsilateral cranial nerve III palsy. Case Description: We report the first case of a posterior cerebral artery aneurysm associated with a contralateral cranial nerve III palsy. A 64-year-old male presented with acute subarachnoid hemorrhage, Hunt and Hess grade 3, and a left-sided fixed and dilated pupil. Computed tomography scan showed hemorrhage, mainly within the left basal cisterns...
2018: Surgical Neurology International
https://www.readbyqxmd.com/read/29567677/parvins-are-required-for-endothelial-cell-cell-junctions-and-cell-polarity-during-embryonic-blood-vessel-formation
#20
Bettina Pitter, Ann-Cathrin Werner, Eloi Montanez
OBJECTIVE: During vascular development, integrin-mediated signaling regulates the formation and stabilization of cell-cell junctions, which are required for endothelial cell (EC) apical-basal polarity and proper deposition of the vascular basement membrane. Parvins are actin-binding proteins that facilitate the interaction of integrins with the actin cytoskeleton. The endothelium expresses 2 parvin isoforms: α-pv (α-parvin) and β-pv (β-parvin). Recently, we have shown that α-pv is critical for vessel growth and vessel stability at late embryonic developmental stages...
March 22, 2018: Arteriosclerosis, Thrombosis, and Vascular Biology
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