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https://www.readbyqxmd.com/read/27923754/successful-coil-embolization-of-pediatric-carotid-cavernous-fistula-due-to-ruptured-post-traumatic-giant-internal-carotid-artery-aneurysm
#1
Daisuke Wajima, Ichiro Nakagawa, Hun Soo Park, Shohei Yokoyama, Takeshi Wada, Kimihiko Kichikawa, Hiroyuki Nakase
BACKGROUND: The goal of the treatment of direct carotid cavernous fistula (CCF) is to occlude the arteriovenous shunt and to preserve the patency of the concerned internal carotid artery (ICA). However, for the ipsilateral post-traumatic fragile cerebrum, coil embolization plus parent artery occlusion for the high flow direct CCF would be better for the prevention of hyper-perfusion syndrome and the intracranial hemorrhage. We experienced such a case and managed it successfully. CASE DESCRIPTION: A 6-year-old boy was suffered from severe head trauma caused by being hit by a car...
December 3, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27923230/skull-subsidence-due-to-periosteum-defect-following-craniotomy-in-a-child
#2
Hidetaka Arishima, Ayumi Akazawa, Ken-Ichiro Kikuta
We report a case of a 7-year-old child with a cranial deformity secondary to a craniotomy for an intracranial hematoma. He suffered from an acute epidural hematoma with a lineal fracture of the right temporal bone following a severe head injury. A large question mark-shaped skin flap with the periosteum and temporal muscle was created for a decompressive craniectomy; however, neither the acute epidural hematoma nor brain swelling was severe, and we performed a small craniotomy compared with the skin flap without a decompressive craniectomy...
December 7, 2016: Pediatric Neurosurgery
https://www.readbyqxmd.com/read/27923226/intraoperative-tumoral-bleeding-of-hypervascular-medulloblastoma-after-ventricular-drainage-a-case-report
#3
Han-Seung Ryu, Tae-Young Jung, Moon-Soo Han, Seul-Ki Kim, Kyung-Hwa Lee
We report a rare case of intraoperative tumoral bleeding of a hypervascular medulloblastoma. A 12-year-old girl presented with dizziness and nausea. Brain magnetic resonance (MR) images revealed an approximately 4.2-cm enhanced mass on the cerebellar vermis associated with mild perilesional edema and increased cerebral blood volume. Angiography showed tumoral staining and developed occipital and circular dural sinuses in the venous phase. A suboccipital craniotomy was performed. To relieve the intracranial pressure, cerebrospinal fluid (CSF) was drained via a lateral ventricular catheter in the occipital horn...
December 7, 2016: Pediatric Neurosurgery
https://www.readbyqxmd.com/read/27922966/local-coverage-for-acute-severely-herniated-brain-using-scalp-and-forehead-flaps-in-a-pediatric-patient-with-head-trauma
#4
Matthew Brown, Navid Pourtaheri, Kristopher Katira, Sunil Manjila, Ali S Totonchi
A 4-year-old-boy required emergent craniectomy and drainage of a large right-sided acute subdural hematoma after head trauma, during which massive sinus hemorrhage with brain swelling occurred. Acute intraoperative management entailed dural cover using synthetic dural membrane substitute and scalp coverage over the herniated brain using acellular dermal matrix. After intensive monitoring and control of raised intracranial pressure over the next few days, the exposed brain was then covered by scalp and forehead flaps with cadaveric skin grafting to the donor site...
December 5, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27918421/decreased-stat3-phosphorylation-mediates-cell-swelling-in-ammonia-treated-astrocyte-cultures
#5
Arumugam R Jayakumar, Kevin M Curtis, Kiran S Panickar, Nagarajarao Shamaladevi, Michael D Norenberg
Brain edema, due largely to astrocyte swelling, and the subsequent increase in intracranial pressure and brain herniation, are major complications of acute liver failure (ALF). Elevated level of brain ammonia has been strongly implicated in the development of astrocyte swelling associated with ALF. The means by which ammonia brings about astrocyte swelling, however, is incompletely understood. Recently, oxidative/nitrosative stress and associated signaling events, including activation of mitogen-activated protein kinases (MAPKs), as well as activation of the transcription factor, nuclear factor-kappaB (NF-κB), have been implicated in the mechanism of ammonia-induced astrocyte swelling...
December 2, 2016: Biology
https://www.readbyqxmd.com/read/27915091/electroconvulsive-stimulation-transiently-enhances-the-permeability-of-the-rat-blood-brain-barrier-and-induces-astrocytic-changes
#6
Masanobu Ito, Kuerban Bolati, Tomoya Kinjo, Koichiro Ichimura, Akiko Furuta, Declan M McLoughlin, Toshihito Suzuki, Heii Arai
The blood-brain barrier (BBB) plays important roles in both the physiological and pharmacological state of the brain. Transiently enhancing the permeability of the BBB may allow use of more types of medications for neuropsychiatric diseases. Several studies have demonstrated that seizures cause a transient decrease in BBB integrity. We studied the timing of BBB changes following seizures and the role of astrocytes in this process. Rats received 10 applications of electroconvulsive stimulation (ECS). They were then infused with sodium fluorescein, a fluorescent substance that rarely passes the BBB, via the inferior vena cava...
November 30, 2016: Brain Research Bulletin
https://www.readbyqxmd.com/read/27907954/today-s-approach-to-treating-brain-swelling-in-the-neuro-intensive-care-unit
#7
Shreyansh Shah, W Taylor Kimberly
Brain swelling is an urgent clinical problem that frequently accompanies ischemic stroke, brain hemorrhage, and traumatic brain injury; it increases morbidity and mortality associated with them. It occurs due to failure of membrane transporters and leakage of the blood-brain barrier (BBB), resulting in combination of cytotoxic, ionic, and vasogenic edema. Currently, decompressive craniectomy and osmotherapy are the mainstays of management, but these therapies do not halt the underlying molecular cascade leading to brain swelling...
December 2016: Seminars in Neurology
https://www.readbyqxmd.com/read/27902685/getting-to-the-bottom-of-face-processing-species-specific-inversion-effects-for-faces-and-behinds-in-humans-and-chimpanzees-pan-troglodytes
#8
Mariska E Kret, Masaki Tomonaga
For social species such as primates, the recognition of conspecifics is crucial for their survival. As demonstrated by the 'face inversion effect', humans are experts in recognizing faces and unlike objects, recognize their identity by processing it configurally. The human face, with its distinct features such as eye-whites, eyebrows, red lips and cheeks signals emotions, intentions, health and sexual attraction and, as we will show here, shares important features with the primate behind. Chimpanzee females show a swelling and reddening of the anogenital region around the time of ovulation...
2016: PloS One
https://www.readbyqxmd.com/read/27896810/multiple-pathways-for-elevating-extracellular-adenosine-in-the-rat-hippocampal-ca1-region-characterized-by-adenosine-sensor-cells
#9
Kunihiko Yamashiro, Yuki Fujii, Shohei Maekawa, Mitsuhiro Morita
Extracellular adenosine in the brain, which modulates various physiological and pathological processes, fluctuates in a complicated manner that reflects the circadian cycle, neuronal activity, metabolism, and disease states. The dynamics of extracellular adenosine in the brain are not fully understood, largely because of the lack of simple and reliable methods of measuring time-dependent changes in tissue adenosine distribution. This study describes the development of a biosensor, designated an adenosine sensor cell, expressing adenosine A1 receptor, and a genetically modified G protein...
November 5, 2016: Journal of Neurochemistry
https://www.readbyqxmd.com/read/27890762/the-clinical-value-of-intraoperative-mobile-computed-tomography-in-managing-high-risk-surgical-patients-with-traumatic-brain-injury-a-single-tertiary-trauma-center-experience
#10
Ko-Ting Chen, Shih-Tseng Lee, Chieh-Tsai Wu
OBJECTS: A subset of surgically-treated traumatic brain injury (TBI) patients cannot be stabilized by initial surgery. Mobile computed tomography (mCT) provides real-time information for diagnosis in these TBI-surgically high risk (TBI-SHR) patients. The objective of this study was to analyze a 5-year series of TBI-SHR patients to evaluate the impact of intraoperative mCT (imCT) on prognosis. METHODS: Out of 1017 surgically-treated TBI patients retrospectively reviewed over a 5-year period (2009-2013), fifty-nine patients required second operations within 72 hours of their initial surgery due to progressive or delayed hematomas (TBI-SHR group)...
November 24, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27888079/neglected-recurrent-scalp-sinus-calvarial-tuberculosis-with-intracrnial-and-extracranial-extension
#11
Krishnamurthy B Holeppagol, Biswaranjan N Nayak, Ram Kumar K Goyal, Arunkumar K Kumar, Prafulla K Sahoo, Debabrata B Biswal
INTRODUCTION: Calvarial Tuberculosis with intracranial tuberculoma and skin involvement is rare condition even in endemic regions. CASE PRESENTATION: We herein describe an adult male patient presenting with generalized seizure ,altered mental state, scalp swelling and pus discharging sinus over scalp .MRI brain gave conflicting diagnosis of Anaplastic menigiomas /chronic osteomyelitis with intra cranial extension .Debridement and drainage of intracranial pus was done...
November 22, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27886057/age-related-modulations-of-aqp4-and-caveolin-1-in-the-hippocampus-predispose-the-toxic-effect-of-phoneutria-nigriventer-spider-venom
#12
Edilene S Soares, Leila M Stávale, Monique C P Mendonça, Andressa Coope, Maria Alice da Cruz-Höfling
We have previously demonstrated that Phoneutria nigriventer venom (PNV) causes blood-brain barrier (BBB) breakdown, swelling of astrocytes end-feet and fluid permeation into brain interstitium in rats. Caveolae and water channels respond to BBB alterations by co-participation in shear stress response and edema formation/resolution. Herein, we showed post-natal developmental-related changes of two BBB-associated transporter proteins: the endothelial caveolin-1 (Cav-1), the major scaffolding protein from caveolae frame, and the astroglial aquaporin-4 (AQP4), the main water channel protein expressed in astrocytic peri-vascular end-feet processes, in the hippocampus of rats intraperitoneally-administered PNV...
November 23, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27885576/asymmetric-dimethylarginine-and-hepatic-encephalopathy-cause-effect-or-association
#13
Anna Czarnecka, Krzysztof Milewski, Magdalena Zielińska
The methylated derivative of L-arginine, asymmetric dimethylarginine (ADMA) is synthesized in different mammalian tissues including the brain. ADMA acts as an endogenous, nonselective, competitive inhibitor of all three isoforms of nitric oxide synthase (NOS) and may limit L-arginine supply from the plasma to the enzyme via reducing its transport by cationic amino acid transporters. Hepatic encephalopathy (HE) is a relatively frequently diagnosed complex neuropsychiatric syndrome associated with acute or chronic liver failure, characterized by symptoms linked with impaired brain function leading to neurological disabilities...
November 25, 2016: Neurochemical Research
https://www.readbyqxmd.com/read/27881775/a-biophysical-model-for-cytotoxic-cell-swelling
#14
Koen Dijkstra, Jeannette Hofmeijer, Stephan A van Gils, Michel J A M van Putten
: We present a dynamic biophysical model to explain neuronal swelling underlying cytotoxic edema in conditions of low energy supply, as observed in cerebral ischemia. Our model contains Hodgkin-Huxley-type ion currents, a recently discovered voltage-gated chloride flux through the ion exchanger SLC26A11, active KCC2-mediated chloride extrusion, and ATP-dependent pumps. The model predicts changes in ion gradients and cell swelling during ischemia of various severity or channel blockage with realistic timescales...
November 23, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/27867923/failed-first-craniotomy-and-tumor-removal-of-parasagittal-meningioma-with-severe-peritumoral-brain-edema
#15
Youngbo Shim, Sang Hyung Lee
Parasagittal meningioma often presents as peritumoral brain edema (PTBE). The risk of edema increases when the tumor occludes the superior sagittal sinus (SSS). Although PTBE may be expected based on the patient's symptoms or radiologic findings, extensive brain swelling and extracranial herniation during elective surgery are rare. Herniation during surgery could lead to irreversible neurological damage and even brain rupture. We report a case of a failed routine craniotomy for a parasagittal meningioma with complete occlusion of the posterior third of the SSS in a 30-year-old male patient...
October 2016: Brain Tumor Research and Treatment
https://www.readbyqxmd.com/read/27859957/retrospective-comparison-of-three-dimensional-conformal-radiation-therapy-vs-prednisolone-alone-in-30-cases-of-canine-infratentorial-brain-tumors
#16
Elisabetta Treggiari, Thomas W Maddox, Rita Gonçalves, Jerome Benoit, Julia Buchholz, Laura Blackwood
Infratentorial tumors are relatively infrequent in dogs and a lack of data makes it difficult to offer prognostic information. Untreated, dogs with these neoplasms have shorter survival times than those with supratentorial tumors. The role of radiation therapy (RT) in the management of infratentorial tumors is poorly defined and tumoral/peritumoral swelling in this site is a potential cause of serious acute side effects. The aim of this retrospective, cohort study was to describe cases of infratentorial tumors treated with fractionated three-dimensional conformal RT (3D CRT) and glucocorticoids (GC), and compare outcomes and survival with dogs affected by tumors in the same location that received GC alone...
November 15, 2016: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/27858578/severe-cerebral-edema-following-nivolumab-treatment-for-pediatric-glioblastoma-case-report
#17
Xiao Zhu, Michael M McDowell, William C Newman, Gary E Mason, Stephanie Greene, Mandeep S Tamber
Nivolumab is an immune checkpoint inhibitor (ICI) currently undergoing Phase III clinical trials for the treatment of glioblastoma. The authors present the case of a 10-year-old girl with glioblastoma treated with nivolumab under compassionate-use guidelines. After the first dose of nivolumab the patient developed hemiparesis, cerebral edema, and significant midline shift due to severe tumor necrosis. She was managed using intravenous dexamethasone and discharged on a dexamethasone taper. The patient's condition rapidly deteriorated after the second dose of nivolumab, demonstrating hemiplegia, seizures, and eventually unresponsiveness with a fixed and dilated left pupil...
November 18, 2016: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/27857999/do-age-and-anticoagulants-affect-the-natural-history-of-acute-subdural-hematomas
#18
Brandon P Lucke-Wold, Ryan C Turner, Darnell Josiah, Chelsea Knotts, Sanjay Bhatia
Acute subdural hematoma is a serious complication following traumatic brain injury. Large volume hematomas or those with underlying brain injury can cause mass effect, midline shift, and eventually herniation of the brain. Acute subdural hematomas in the young are associated with high-energy trauma and often have underlying contusions, while acute subdural hematomas in the elderly are associated with minor trauma and an absence of underlying contusions, even though the elderly are more likely to be on anticoagulants or anti-platelet therapy...
2016: Arch Emerg Med Crit Care
https://www.readbyqxmd.com/read/27857913/addition-of-resection-of-temporal-muscle-and-fascia-in-decompressive-craniectomy-in-the-treatment-of-traumatic-brain-injury
#19
Seung Han Yu, Byung Chul Kim, Jae Young Choi, Jae Il Lee, Won Ho Cho, Hyuk Jin Choi
OBJECTIVE: Decompressive craniectomy (DC) is a widely used surgical procedure for control of severely increased intracranial pressure in various conditions. The goal of this study is to evaluate the effectiveness of the addition of resection of temporalis muscle and fascia in DC particularly in the treatment of traumatic brain injury. METHODS: Twenty patients underwent temporalis muscle and fascia resection in addition to conventional DC and duroplasty due to massive brain swelling in a single tertiary hospital from 2013 to 2015 were enrolled...
October 2016: Korean Journal of Neurotrauma
https://www.readbyqxmd.com/read/27857908/therapeutic-hypothermia-for-increased-intracranial-pressure-after-decompressive-craniectomy-a-single-center-experience
#20
Hyun Taek Rim, Jun Hyong Ahn, Ji Hee Kim, Jae Keun Oh, Joon Ho Song, In Bok Chang
OBJECTIVE: Therapeutic hypothermia (TH) and decompressive craniectomy are neuroprotective interventions following severe brain swelling. The precise benefits, risks, and clinical outcomes in brain swelling after TH are still being investigated. We aimed to investigate the effects of TH in severe brain injury after decompressive craniectomy. METHODS: We reviewed the cases of 24 patients who underwent decompressive craniectomy with intracranial pressure (ICP) monitor insertion in one medical center between January 2012 and May 2016...
October 2016: Korean Journal of Neurotrauma
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