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https://www.readbyqxmd.com/read/28335421/pamam-dendrimers-cross-the-blood-brain-barrier-when-administered-through-the-carotid-artery-in-c57bl-6j-mice
#1
Bhairavi Srinageshwar, Sarah Peruzzaro, Melissa Andrews, Kayla Johnson, Allison Hietpas, Brittany Clark, Crystal McGuire, Eric Petersen, Jordyn Kippe, Andrew Stewart, Olivia Lossia, Abeer Al-Gharaibeh, Aaron Antcliff, Rebecca Culver, Douglas Swanson, Gary Dunbar, Ajit Sharma, Julien Rossignol
Drug delivery into the central nervous system (CNS) is challenging due to the blood-brain barrier (BBB) and drug delivery into the brain overcoming the BBB can be achieved using nanoparticles such as dendrimers. The conventional cationic dendrimers used are highly toxic. Therefore, the present study investigates the role of novel mixed surface dendrimers, which have potentially less toxicity and can cross the BBB when administered through the carotid artery in mice. In vitro experiments investigated the uptake of amine dendrimers (G1-NH₂ and G4-NH₂) and novel dendrimers (G1-90/10 and G4-90/10) by primary cortical cultures...
March 14, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28333858/immune-reconstitution-inflammatory-syndrome-causing-progressive-optic-nerve-edema-in-cryptococcal-meningitis
#2
Astrid C Werner, Laurel N Vuong, Thomas R Hedges, Caroline R Baumal
PURPOSE: To report an human immunodeficiency virus-positive patient undergoing therapy for cryptococcal meningitis who developed progressive optic disc edema that was steroid responsive. METHODS: Observational case report. RESULTS: One month after commencing antifungal treatment for cryptococcal meningitis, the patient developed bilateral, progressive, recurrent optic disc edema with subretinal fluid that coincided with initiation of highly active antiretroviral therapy and recovery of CD4 cell counts...
March 22, 2017: Retinal Cases & Brief Reports
https://www.readbyqxmd.com/read/28332073/aicardi-gouti%C3%A3-res-syndrome-unusual-neuro-radiological-manifestations
#3
Ghada M H Abdel-Salam, Mohamed S Abdel-Hamid, Shaimaa A Mohammad, Sherif F Abdel-Ghafar, Doaa R Soliman, Hala T El-Bassyouni, Laila Effat, Maha S Zaki
Aicardi-Goutières syndrome (AGS) is one of the expanding group of inherited congenital infection like syndromes. Here, we describe the detailed clinical and imaging findings of two sibs with AGS. Each shows scattered periventricular intracranial calcifications, severe global delay, seizures, microcephaly and spasticity. Interestingly, chilblains were observed in the two sisters as well as their parents and a paternal uncle. The brain MRI of the older sister showed marked ventricular dilatation as a result of unusual associated porencephalic cysts...
March 23, 2017: Metabolic Brain Disease
https://www.readbyqxmd.com/read/28331021/aspergillus-niger-infection-in-an-immunosuppressed-patient-confined-solely-to-the-brain
#4
Lucy Simmonds, Sian Mitchell, Barrie White, Shanika A Crusz, David Denning
A 68-year-old woman with a background of hypertension, stroke and rheumatoid arthritis presented to her local hospital after a 4-week history of gradual deterioration and increasing confusion with new onset right-sided weakness. Her initial CT scan revealed a rim enhancing mass lesion with surrounding oedema in the left parietal lobe for which she underwent CT stealth-guided biopsy. Microbiology culture of the 2 biopsy samples yielded Aspergillus niger and she was started on the antifungal agent voriconazole...
March 22, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28330482/development-of-a-model-of-saint-louis-encephalitis-infection-and-disease-in-mice
#5
Rafael Elias Marques, Juliana L Del Sarto, Rebeca P F Rocha, Giovanni F Gomes, Allysson Cramer, Milene A Rachid, Danielle G Souza, Maurício L Nogueira, Mauro M Teixeira
BACKGROUND: Flaviviruses are a genre of closely related viral pathogens which emerged in the last decades in Brazil and in the world. Saint (St.) Louis encephalitis virus (SLEV) is a neglected flavivirus that can cause a severe neurological disease that may lead to death or sequelae. St. Louis encephalitis pathogenesis is poorly understood, which hinders the development of specific treatment or vaccine. METHODS: To address this problem, we developed a model of SLEV infection in mice to study mechanisms involved in the pathogenesis of severe disease...
March 22, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28328693/a-giant-pseudoaneurysm-mimicking-retropharyngeal-abscess-in-a-child
#6
Rijuneeta Gupta, Sourabha K Patro, Neha Chauhan, Ajay Kumar
Pseudoaneurysms of the cervical internal carotid artery are rare and usually result from trauma, infection, or rarely spontaneously. They harbor potential risk of life-threatening hemorrhage and warrant immediate management. Endovascular treatment in the form of stent placement and coiling is a well established technique for dealing with both intracranial and extracranial pseudoaneurysms. We present a case of a child who presented with fever, neck swelling, dysphagia, and respiratory distress in emergency for which clinical diagnosis of a neck abscess was made...
March 21, 2017: Pediatric Emergency Care
https://www.readbyqxmd.com/read/28327899/thirty-day-readmission-rates-following-deep-brain-stimulation-surgery
#7
Ashwin G Ramayya, Kalil G Abdullah, Arka N Mallela, John T Pierce, Jayesh Thawani, Dmitry Petrov, Gordon H Baltuch
BACKGROUND: Deep brain stimulation (DBS) has emerged as a safe and efficacious surgical intervention for several movement disorders; however, the 30-day all-cause readmission rate associated with this procedure has not previously been documented. OBJECT: To perform a retrospective cohort study to estimate the 30-day all-cause readmission rate associated with DBS. METHODS: We reviewed medical records of patients over the age of 18 who underwent DBS surgery at Pennsylvania Hospital of the University of Pennsylvania between 2009 and 2014...
March 15, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28324680/somatic-complications-of-epilepsy-surgery-over-25-years-at-a-single-center
#8
Inuka K Gooneratne, Shahidul Mannan, Jane de Tisi, Juan C Gonzalez, Andrew W McEvoy, Anna Miserocchi, Beate Diehl, Tim Wehner, Gail S Bell, Josemir W Sander, John S Duncan
INTRODUCTION: Epilepsy surgery is an effective treatment for refractory focal epilepsy. Risks of surgery need to be considered when advising individuals of treatment options. We describe the frequency and nature of physical adverse events associated with epilepsy surgery in a single center. MATERIAL AND METHODS: We reviewed the prospectively maintained records of adults who underwent epilepsy surgery at our center between 1990 and 2014 to identify peri/postsurgical adverse events...
March 1, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/28318214/preterm-labor-prevention-and-management
#9
Kristen Rundell, Bethany Panchal
In the United States, preterm delivery is the leading cause of neonatal morbidity and is the most common reason for hospitalization during pregnancy. The rate of preterm delivery (before 37 weeks' gestation) has been declining since 2007. Clinical diagnosis of preterm labor is made if there are regular contractions and concomitant cervical change. Less than 10% of women with a clinical diagnosis of preterm labor will deliver within seven days of initial presentation. Women with a history of spontaneous preterm delivery are 1...
March 15, 2017: American Family Physician
https://www.readbyqxmd.com/read/28290524/gut-dysbiosis-and-neuroimmune-responses-to-brain-infection-with-theiler-s-murine-encephalomyelitis-virus
#10
F J Carrillo-Salinas, L Mestre, M Mecha, A Feliú, R Del Campo, N Villarrubia, C Espejo, X Montalbán, J C Álvarez-Cermeño, L M Villar, C Guaza
Recent studies have begun to point out the contribution of microbiota to multiple sclerosis (MS) pathogenesis. Theiler's murine encephalomyelitis virus induced demyelinating disease (TMEV-IDD) is a model of progressive MS. Here, we first analyze the effect of intracerebral infection with TMEV on commensal microbiota and secondly, whether the early microbiota depletion influences the immune responses to TMEV on the acute phase (14 dpi) and its impact on the chronic phase (85 dpi). The intracranial inoculation of TMEV was associated with a moderate dysbiosis...
March 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28286386/brain-abscess-potentially-resulting-from-odontogenic-focus-report-of-three-cases-and-a-literature-review
#11
Masaya Akashi, Kazuhiro Tanaka, Junya Kusumoto, Shungo Furudoi, Kohkichi Hosoda, Takahide Komori
INTRODUCTION: Odontogenic foci can rarely cause intracranial infection. Hematogenous spread is considered to be the most important pathophysiological mechanism of intracranial infection of odontogenic origin. To investigate the oral origin of intracranial infections, oral surgeons should understand the underlying mechanisms by which oral bacteria spread to the central nervous system. However, there have been very few reports of intracranial infection resulting from odontogenic infection...
March 2017: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/28281443/central-nervous-system-tuberculosis
#12
John M Leonard
Central nervous system tuberculosis (CNS-TB) takes three clinical forms: meningitis (TBM), intracranial tuberculoma, and spinal arachnoiditis. TBM predominates in the western world and presents as a subacute to chronic meningitis syndrome with a prodrome of malaise, fever, and headache progressing to altered mentation and focal neurologic signs, followed by stupor, coma, and death within five to eight weeks of onset. The CSF formula typically shows a lymphocytic pleocytosis, and low glucose and high protein concentrations...
March 2017: Microbiology Spectrum
https://www.readbyqxmd.com/read/28275981/clinical-profile-and-outcomes-of-management-of-orbital-cellulitis-in-upper-egypt
#13
Ahmed Mohamed Kamal Elshafei, Mohamed Farouk Sayed, Raafat Mohyeldeen Abdelrahman Abdallah
BACKGROUND: The purpose of this paper is to study the etiology, clinical findings, and outcomes of management of cases of orbital cellulitis treated in Minia University Hospital in Upper Egypt over the period of 6 years from July 2009 to July 2015. One-hundred two patients diagnosed to have orbital cellulitis were admitted to the hospital and treated on inpatient basis from July 2009 to July 2015. All patients were subjected to full ophthalmological examination, systemic evaluation, and ear, nose, and throat (ENT) consultation...
December 2017: Journal of Ophthalmic Inflammation and Infection
https://www.readbyqxmd.com/read/28275224/aggressive-versus-conservative-antibiotic-use-to-prevent-and-treat-ventilator-associated-pneumonia-in-patients-with-severe-traumatic-brain-injury-comparison-of-two-case-series
#14
Arturo Chieregato, Paolo Malacarne, Francesco Cocciolo, Maurizio Ravaldini, Emanuele Russo, Bruno Viaggi, Michele Giardino, Carlotta Rossi, Bruno Simini, Guido Bertolini
BACKGROUND: In patients with traumatic brain injury (TBI), ventilator-associated pneumonia (VAP) is considered a dangerous complication, prompting early aggressive antibiotic treatment and prophylaxis. While this approach increases the selection of multidrug-resistant bacteria (MDR), its clinical benefit has not been demonstrated. METHODS: One-year incidence of VAP in severe TBI patients (ICU stay >48 hours, with either Glasgow Coma Scale 8 or receiving intracranial pressure monitoring, or having undergone emergency surgery) and the prevalence of MDR among those who eventually developed it, were compared in two Italian intensive care units (ICUs) adopting different antibiotic approaches...
March 8, 2017: Minerva Anestesiologica
https://www.readbyqxmd.com/read/28266016/clinical-and-mutation-analysis-of-24-chinese-patients-with-ornithine-transcarbamylase-deficiency
#15
Yongxian Shao, Minyan Jiang, Yunting Lin, Huifen Mei, Wen Zhang, Yanna Cai, Xueying Shu, Hao Hu, Xiuzhen Li, Li Liu
The principal aim of this study was to examine the clinical manifestations, biochemical features, and molecular genetic characteristics of Chinese patients with ornithine transcarbamylase deficiency (OTCD) at a single medical center. We retrospectively analyzed 24 patients (17 males and 7 females) diagnosed with OTCD between 2006 and 2015. Five male patients had a neonatal presentation; 12 male patients had late onset disease and 7 female patients presented as symptomatic. Patients with a neonatal presentation had the highest peak plasma ammonia and glutamine levels at diagnosis with a high mortality (80% versus 16% in late onset disease)...
March 7, 2017: Clinical Genetics
https://www.readbyqxmd.com/read/28255931/scary-gas-intravascular-intracranial-and-intraspinal-ectopic-gas-part-iii
#16
Claire K Sandstrom, Sherif F Osman, Ken F Linnau
While ectopic gas can be a sign of dangerous disease requiring immediate medical or surgical intervention, it can also be an incidental and benign finding. Intravenous gas and spinal vacuum gas are common and almost always benign. Intravascular gas is most often related to instrumentation and, if intraarticular, can cause end-organ ischemia; however, treatment is usually supportive. Pneumocephalus arises from a communication with paranasal sinuses or mastoids more often than from meningeal infection and can usually be managed nonoperatively...
March 2, 2017: Emergency Radiology
https://www.readbyqxmd.com/read/28253398/otogenic-temporomandibular-arthritis-in-children
#17
Alice Burgess, Charlotte Celerier, Sylvain Breton, Thierry Van den Abbeele, Natacha Kadlub, Nicolas Leboulanger, Noël Garabedian, Vincent Couloigner
Importance: Septic arthritis of the temporomandibular joint (SATMJ) is a very rare but potentially severe complication of pediatric middle ear infections because it presents risks of TMJ ankylosis. Objective: To describe the clinical, radiological, biological, and microbiological characteristics and evolution of SATMJ complicating middle ear infections (otogenic SATMJ) in children. Design, Setting, and Participants: This multicenter retrospective study included all children younger than 18 years referred between January 1, 2005, and December 31, 2015, for otogenic SATMJ or for TMJ ankylosis that occurred a few months to a few years after an acute mastoiditis...
March 2, 2017: JAMA Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/28250259/a-case-of-congenital-folliculitis-caused-by-pseudomonas-aeruginosa-in-a-preterm-neonate
#18
Koichiro Matsui, Kaoru Okazaki, Yuho Horikoshi, Ryota Kakinuma, Masatoshi Kondo
Intrauterine infections are associated with life-threatening neonatal conditions such as sepsis, intracranial hemorrhage, and chronic lung disease. Herein we present a case of generalized congenital folliculitis caused by Pseudomonas aeruginosa (P. aeruginosa) in a preterm neonate of 27 weeks gestational age successfully treated with antibiotics. Folliculitis is an important manifestation of intrauterine P. aeruginosa infection and prompt, effective treatment is crucial to ensuring a good prognosis.
February 28, 2017: Japanese Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28247036/ferritin-heavy-chain-as-a-molecular-imaging-reporter-gene-in-glioma-xenografts
#19
Sen Cheng, Ruifang Mi, Yu Xu, Guishan Jin, Junwen Zhang, Yiqiang Zhou, Zhengguang Chen, Fusheng Liu
PURPOSE: The development of glioma therapy in clinical practice (e.g., gene therapy) calls for efficiently visualizing and tracking glioma cells in vivo. Human ferritin heavy chain is a novel gene reporter in magnetic resonance imaging. This study proposes hFTH as a reporter gene for MR molecular imaging in glioma xenografts. METHODS: Rat C6 glioma cells were infected by packaged lentivirus carrying hFTH and EGFP genes and obtained by fluorescence-activated cell sorting...
February 28, 2017: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/28244170/population-based-incidence-and-clinical-characteristics-of-idiopathic-intracranial-hypertension
#20
A Sundholm, S Burkill, O Sveinsson, F Piehl, S Bahmanyar, A I M Nilsson Remahl
OBJECTIVE: To validate the diagnosis of idiopathic intracranial hypertension (IIH) from the Swedish National Patient Register (NPR) and investigate the incidence of IIH, as well as co-morbidities and medication use in a large Swedish population-based sample. METHODS: We searched the NPR to find all patients ≥18 years old with the ICD-10 diagnosis code (G93.2) for IIH in Stockholm County from Jan 1, 2006, to Dec 31, 2013. All medical records were reviewed to validate the diagnosis and to collect additional information...
February 28, 2017: Acta Neurologica Scandinavica
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