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Cerebral oedema

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https://www.readbyqxmd.com/read/28627942/diffusion-imaging-of-mild-traumatic-brain-injury-in-the-impact-accelerated-rodent-model-a-pilot-study
#1
Zora Kikinis, Marc Muehlmann, Ofer Pasternak, Sharon Peled, Praveen Kulkarni, Craig Ferris, Sylvain Bouix, Yogesh Rathi, Inga K Koerte, Steve Pieper, Alexander Yarmarkovich, Caryn L Porter, Bruce S Kristal, Martha E Shenton
PRIMARY OBJECTIVE: There is a need to understand pathologic processes of the brain following mild traumatic brain injury (mTBI). Previous studies report axonal injury and oedema in the first week after injury in a rodent model. This study aims to investigate the processes occurring 1 week after injury at the time of regeneration and degeneration using diffusion tensor imaging (DTI) in the impact acceleration rat mTBI model. RESEARCH DESIGN: Eighteen rats were subjected to impact acceleration injury, and three rats served as sham controls...
June 19, 2017: Brain Injury: [BI]
https://www.readbyqxmd.com/read/28609593/travelling-safely-to-places-at-high-altitude-understanding-and-preventing-altitude-illness
#2
Ivan Parise
BACKGROUND: Greater numbers of people are travelling to places at high altitude each year. Altitude illness is common in places at high altitude and may be life-threatening. General practitioners (GPs) are best placed to provide evidence-based advice to keep travellers well informed of the possible risks they may encounter in places at high altitude. OBJECTIVE: The aim of this article is to review knowledge on altitude illness in order to help GPs assist patients to travel safely to places at high altitude...
June 2017: Australian Family Physician
https://www.readbyqxmd.com/read/28571812/a-hypothesis-for-mechanism-for-brain-oedema-due-to-glycine
#3
Suchita J Mehta, Andrea Roche Recinos, Subodh J Saggi, Man S Oh
Death following the use the glycine distension solution in transurethral prostatectomy (TURP) or hysteroscopic surgery has been attributed to the toxic effect of glycine on the brain through the glycine receptors and hyperammonemia, contending that glycine-associated hyponatremia is isosmotic and therefore would not cause brain oedema. Here we propose a hypothesis that the mechanism of brain oedema and death is actually osmotic brain oedema caused by selective diffusion of glycine into the brain while sodium cannot diffuse out of the brain despite favourable concentration gradient because of the absence of sodium transporter on the cerebral capillaries needed for the exit of sodium from the brain...
June 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/28569284/acute-pulmonary-oedema-not-always-cardiogenic
#4
M Bonello, R Pullicino, A J Larner
A patient presented with fulminant pulmonary oedema and required acute intubation and ventilation. There was no history of a prior cardiac disorder. As he was weaned from sedation, following stabilisation of his pulmonary status, neurological signs suggestive of brainstem dysfunction became apparent. Investigations showed infarcts in the posterior cerebral circulation secondary to a vertebral artery dissection. Neurogenic pulmonary oedema needs to be considered in any patient with fulminant pulmonary oedema without overt evidence or history of cardiac disease...
March 2017: Journal of the Royal College of Physicians of Edinburgh
https://www.readbyqxmd.com/read/28545408/importance-of-correctly-interpreting-magnetic-resonance-imaging-to-diagnose-posterior-reversible-encephalopathy-syndrome-associated-with-hellp-syndrome-a-case-report
#5
Syuichi Tetsuka, Hiroaki Nonaka
BACKGROUND: Severe haemolysis, elevated liver enzyme levels, and low platelet count (HELLP) syndrome in pregnancy are possible underlying trigger factors for posterior reversible encephalopathy syndrome (PRES). Magnetic resonance imaging (MRI) shows diffuse signal abnormalities involving the subcortical white matter in the parieto-occipital lobes. Although the diagnosis of RPES was clearly established by the distinctive reversibility of clinical and radiological abnormalities, it is difficult to distinguish from differential diagnosis...
May 25, 2017: BMC Medical Imaging
https://www.readbyqxmd.com/read/28533826/a-novel-triage-tool-optic-nerve-sheath-diameter-in-traumatic-brain-injury-and-its-correlation-to-rotterdam-computed-tomography-ct-scoring
#6
Sudha Kiran Das, Sachin P Shetty, Kamal Kumar Sen
BACKGROUND: Optic nerve sheath diameter (ONSD) evaluated in CT imaging as well as Rotterdam CT Score (RCTS) are proven independent predictors of outcome in patients with traumatic brain injury (TBI). To date, no study has correlated ONSD on admission CT scan with RCTS. MATERIAL/METHODS: Retrospective cohort study comprised of consecutive patients undergoing CT imaging for traumatic brain injury recruited between January and October 2015. Bilateral ONSD was measured 3 mm behind the eyeball in axial and sagittal planes and mean value was calculated...
2017: Polish Journal of Radiology
https://www.readbyqxmd.com/read/28523591/assessment-of-the-neuroprotective-effects-of-arginine-rich-protamine-peptides-poly-arginine-peptides-r12-cyclic-r22-and-arginine-tryptophan-containing-peptides-following-in-vitro-excitotoxicity-and-or-permanent-middle-cerebral-artery-occlusion-in-rats
#7
Bruno P Meloni, Diego Milani, Jane L Cross, Vince W Clark, Adam B Edwards, Ryan S Anderton, David J Blacker, Neville W Knuckey
We have demonstrated that arginine-rich and poly-arginine peptides possess potent neuroprotective properties with arginine content and peptide positive charge being particularly critical for neuroprotective efficacy. In addition, the presence of other amino acids within arginine-rich peptides, as well as chemical modifications, peptide length and cell-penetrating properties also influence the level of neuroprotection. Against this background, we have examined the neuroprotective efficacy of arginine-rich protamine peptides, a cyclic (R12-c) poly-arginine peptide and a R22 poly-arginine peptide, as well as arginine peptides containing tryptophan or other amino acids (phenylalanine, tyrosine, glycine or leucine) in in vitro glutamic acid excitotoxicity and in vivo rat permanent middle cerebral artery occlusion models of stroke...
May 18, 2017: Neuromolecular Medicine
https://www.readbyqxmd.com/read/28506130/fullerenol-nanoparticles-decrease-ischaemia-induced-brain-injury-and-oedema-through-inhibition-of-oxidative-damage-and-aquaporin-1-expression-in-ischaemic-stroke
#8
Shamsi Darabi, Mohammad Taghi Mohammadi
BACKGROUND: We examined the possible protective effects of fullerenol nanoparticles on brain injuries and oedema in experimental model of ischaemic stroke through inhibition of oxidative damage and aquaporin-1 (AQP-1) expression. METHODS: Experiment was done in three groups of rats (N = 66): sham, control ischaemia and ischaemic treatment. Ischaemia was induced by 90-minutes middle cerebral artery occlusion (MCAO) followed by 24 hours of reperfusion. Rats received a dose of 10 mg/kg of fullerenol 30 minutes before MCAO...
May 16, 2017: Brain Injury: [BI]
https://www.readbyqxmd.com/read/28379220/long-term-consumption-of-fermented-rooibos-herbal-tea-offers-neuroprotection-against-ischemic-brain-injury-in-rats
#9
Olusiji Akinrinmade, Sylvester Omoruyi, Daneel Dietrich, Okobi Ekpo
Stroke is the second leading cause of death worldwide, affecting about 240 people a day in South Africa and leaving survivors with residual disabilities. At the moment, there is no clinically approved neuroprotective product for stroke but the consumption of plant polyphenols has been suggested to offer some protection against stroke. In this study, we investigated the effects of long-term consumption of fermented rooibos herbal tea (FRHT) on ischemia/reperfusion (I/R)-induced brain injury in adult male Wistar rats...
2017: Acta Neurobiologiae Experimentalis
https://www.readbyqxmd.com/read/28299538/decompressive-surgery-in-malignant-cerebral-venous-sinus-thrombosis-what-predicts-its-outcome
#10
Rohan Mahale, Anish Mehta, Ravi Gopal Varma, Alangar S Hegde, Purushottam T Acharya, Rangasetty Srinivasa
Cerebral venous sinus thrombosis (CVST) is common in Asians, accounting for 15% of all strokes in the young. CVST causing malignant cerebral oedema with brain herniation and death are referred as malignant CVST. This study was aimed at evaluating the outcome of patients and factors predicting the outcome with malignant CVST after decompressive surgery. It was a retrospective, observational, single centre, hospital-based and cross-sectional study. Records of patients with malignant CVST who had decompressive surgery were analysed...
May 2017: Journal of Thrombosis and Thrombolysis
https://www.readbyqxmd.com/read/28265034/extracellular-matrix-inflammation-in-vascular-cognitive-impairment-and-dementia
#11
REVIEW
Gary A Rosenberg
Vascular cognitive impairment and dementia (VCID) include a wide spectrum of chronic manifestations of vascular disease related to large vessel strokes and small vessel disease (SVD). Lacunar strokes and white matter (WM) injury are consequences of SVD. The main vascular risk factor for SVD is brain hypoperfusion from cerebral blood vessel narrowing due to chronic hypertension. The hypoperfusion leads to activation and degeneration of astrocytes with the resulting fibrosis of the extracellular matrix (ECM)...
March 1, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28247179/neuroprotective-effect-of-3-naphthalen-2-yl-propoxy-methyl-azetidine-hydrochloride-on-brain-ischaemia-reperfusion-injury
#12
Eun-A Kim, Jung-Min Na, Jiae Kim, Soo Young Choi, Jee-Yin Ahn, Sung-Woo Cho
Because ischaemic stroke is one of the most common brain disorders, diverse effective therapies are urgently required. Recent studies reported a variety of azetidine-based scaffolds for the development of central nervous system-focused lead-like libraries. However, their mechanisms of action and in vivo functions remain unclear. Here, we investigated the potential mechanism and beneficial effects of 3-(naphthalen-2-yl(propoxy)methyl)azetidine hydrochloride (KHG26792), a novel azetidine derivative, on ischaemia/reperfusion (I/R) brain injury...
February 28, 2017: Journal of Neuroimmune Pharmacology: the Official Journal of the Society on NeuroImmune Pharmacology
https://www.readbyqxmd.com/read/28173619/hyperglycaemia-related-complications-at-the-time-of-diagnosis-can-cause-permanent-neurological-disability-in-children-with-neonatal-diabetes
#13
J O Day, S E Flanagan, M H Shepherd, A W Patrick, N Abid, L Torrens, A J Zeman, K A Patel, A T Hattersley
BACKGROUND: Children with neonatal diabetes often present with diabetic ketoacidosis and hence are at risk of cerebral oedema and subsequent long-term neurological deficits. These complications are difficult to identify because neurological features can also occur as a result of the specific genetic aetiology causing neonatal diabetes. CASE REPORTS: We report two cases of neonatal diabetes where ketoacidosis-related cerebral oedema was the major cause of their permanent neurological disability...
February 7, 2017: Diabetic Medicine: a Journal of the British Diabetic Association
https://www.readbyqxmd.com/read/28160241/retinal-haemorrhages-in-a-university-hospital-not-always-abusive-head-injury
#14
M Mattheij, C Venstermans, I de Veuster, I Vanderstraete, T Menovsky, P Jorens, B Ceulemans
Retinal haemorrhages (RH) and subdural haematomas (SDH) are frequently seen in abusive head trauma (AHT). The aim of our study is to show that they are suggestive, but not pathognomonic for AHT. We performed an observational retrospective study on children, aged 1-18 months old, admitted to the Antwerp University Hospital with RH. History, physical examination, medical course, coagulation and metabolic tests, skeletal survey, head circumference, retinal findings, cerebral imaging, and evaluation reports by social services or civil/criminal courts were collected...
February 3, 2017: Acta Neurologica Belgica
https://www.readbyqxmd.com/read/28145211/-fatal-cerebral-oedema-during-the-treatment-of-diabetic-ketoacidosis-in-an-adult-male
#15
T J A Dekker, J A Janson, E J Hoorn, Y W J Sijpkens
Diabetic ketoacidosis is relatively common, but the optimal treatment of this condition is still controversial. Cerebral oedema is a rare, but potentially fatal complication. We present the case of an adult patient who presented with de novo diabetic ketoacidosis that was complicated by cerebral oedema during treatment. In this article we discuss factors that may have played a role in the development of this complication. A prolonged hyperosmolar state in diabetic ketoacidosis may increase the risk of cerebral oedema as a result of cerebral compensatory mechanisms...
2017: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/28143879/acute-high-altitude-sickness
#16
REVIEW
Andrew M Luks, Erik R Swenson, Peter Bärtsch
At any point 1-5 days following ascent to altitudes ≥2500 m, individuals are at risk of developing one of three forms of acute altitude illness: acute mountain sickness, a syndrome of nonspecific symptoms including headache, lassitude, dizziness and nausea; high-altitude cerebral oedema, a potentially fatal illness characterised by ataxia, decreased consciousness and characteristic changes on magnetic resonance imaging; and high-altitude pulmonary oedema, a noncardiogenic form of pulmonary oedema resulting from excessive hypoxic pulmonary vasoconstriction which can be fatal if not recognised and treated promptly...
January 2017: European Respiratory Review: An Official Journal of the European Respiratory Society
https://www.readbyqxmd.com/read/28125598/a-feasibility-study-of-quantifying-longitudinal-brain-changes-in-herpes-simplex-virus-hsv-encephalitis-using-magnetic-resonance-imaging-mri-and-stereology
#17
Sylviane Defres, Simon S Keller, Kumar Das, Rishma Vidyasagar, Laura M Parkes, Girvan Burnside, Michael Griffiths, Michael Kopelman, Neil Roberts, Tom Solomon
OBJECTIVES: To assess whether it is feasible to quantify acute change in temporal lobe volume and total oedema volumes in herpes simplex virus (HSV) encephalitis as a preliminary to a trial of corticosteroid therapy. METHODS: The study analysed serially acquired magnetic resonance images (MRI), of patients with acute HSV encephalitis who had neuroimaging repeated within four weeks of the first scan. We performed volumetric measurements of the left and right temporal lobes and of cerebral oedema visible on T2 weighted Fluid Attenuated Inversion Recovery (FLAIR) images using stereology in conjunction with point counting...
2017: PloS One
https://www.readbyqxmd.com/read/28041618/pyogenic-ventriculitis-and-ventricular-empyema-associated-with-staphylococcus-pseudintermedius-in-a-puppy
#18
S A Headley, L G Pretto-Giordano, D F Nóbrega, C S Altrão, L A Villas-Boas, A A Alfieri, A P F R L Bracarense
A 40-day-old male, blue heeler puppy with hindlimb ataxia, nystagmus, apathy, motor incoordination and hyperaesthesia of the forelimbs died 3 days after the onset of clinical signs. Significant gross findings included cerebellar herniation, cerebral oedema and dilation of the third and right lateral cerebral ventricles due to the accumulation of a purulent exudate. Histopathological examination revealed pyogenic ventriculitis and purulent meningoencephalitis. Pure colonies of a coagulase-positive Staphylococcus were isolated from the purulent cerebral exudate...
February 2017: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/27986927/histological-underpinnings-of-grey-matter-changes-in-fibromyalgia-investigated-using-multimodal-brain-imaging
#19
F B Pomares, T Funck, N A Feier, S Roy, A Daigle-Martel, M Ceko, S Narayanan, D Araujo, A Thiel, N Stikov, M A Fitzcharles, P Schweinhardt
Chronic pain patients present with cortical grey matter alterations, observed with anatomical magnetic resonance (MR) imaging. Reduced regional grey matter volumes are often interpreted to reflect neurodegeneration but studies investigating the cellular origin of grey matter changes are lacking. We used multi-modal imaging to compare 26 post-menopausal women with 25 healthy controls (age range: 50-75 years) to test whether regional grey matter volume decreases in chronic pain are associated with compromised neuronal integrity...
December 16, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/27974807/long-term-neprilysin-inhibition-implications-for-arnis
#20
REVIEW
Duncan J Campbell
Neprilysin has a major role in both the generation and degradation of bioactive peptides. LCZ696 (valsartan/sacubitril, Entresto), the first of the new ARNI (dual-acting angiotensin-receptor-neprilysin inhibitor) drug class, contains equimolar amounts of valsartan, an angiotensin-receptor blocker, and sacubitril, a prodrug for the neprilysin inhibitor LBQ657. LCZ696 reduced blood pressure more than valsartan alone in patients with hypertension. In the PARADIGM-HF study, LCZ696 was superior to the angiotensin-converting enzyme inhibitor enalapril for the treatment of heart failure with reduced ejection fraction, and LCZ696 was approved by the FDA for this purpose in 2015...
March 2017: Nature Reviews. Cardiology
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