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https://www.readbyqxmd.com/read/29329980/a-mass-spectrometry-imaging-approach-for-investigating-how-drug-drug-interactions-influence-drug-blood-brain-barrier-permeability
#1
Theodosia Vallianatou, Nicole Strittmatter, Anna Nilsson, Mohammadreza Shariatgorji, Gregory Hamm, Marcela Pereira, Patrik Källback, Per Svenningsson, Maria Karlgren, Richard J A Goodwin, Per E Andrén
There is a high need to develop quantitative imaging methods capable of providing detailed brain localization information of several molecular species simultaneously. In addition, extensive information on the effect of the blood-brain barrier on the penetration, distribution and efficacy of neuroactive compounds is required. Thus, we have developed a mass spectrometry imaging method to visualize and quantify the brain distribution of drugs with varying blood-brain barrier permeability. With this approach, we were able to determine blood-brain barrier transport of different drugs and define the drug distribution in very small brain structures (e...
January 9, 2018: NeuroImage
https://www.readbyqxmd.com/read/29320777/a-case-of-giant-supratentorial-choroid-plexus-carcinoma-in-a-young-girl
#2
Saumya Gupta, Kirti Gupta, Apinderpreet Singh
No abstract text is available yet for this article.
January 11, 2018: Pediatric Neurosurgery
https://www.readbyqxmd.com/read/29317443/a-mutation-in-ccdc39-causes-neonatal-hydrocephalus-with-abnormal-motile-cilia-development-in-mice
#3
Zakia Abdelhamed, Shawn M Vuong, Lauren Hill, Crystal Shula, Andrew Timms, David Beier, Kenneth Campbell, Francesco T Mangano, Rolf W Stottmann, June Goto
Pediatric hydrocephalus is characterized by an abnormal accumulation of cerebrospinal fluid (CSF) and is one of the most common congenital brain abnormalities. However, little is known about the molecular and cellular mechanisms regulating CSF flow in the developing brain. Through whole-genome sequencing analysis, we report that a homozygous splice site mutation in coiled-coil domain containing 39 (Ccdc39) is responsible for early postnatal hydrocephalus in the progressive hydrocephalus (prh) mouse mutant. Ccdc39 is selectively expressed in embryonic choroid plexus and ependymal cells on the medial wall of the forebrain ventricle, and the protein is localized to the axoneme of motile cilia...
January 9, 2018: Development
https://www.readbyqxmd.com/read/29301833/establishing-a-preclinical-multidisciplinary-board-for-brain-tumors
#4
Birgit Nimmervoll, Nidal Boulos, Brandon M Bianski, Jason Dapper, Michael DeCuypere, Anang A Shelat, Sabrina Terranova, Hope Elizabeth Terhune, Amar Gajjar, Yogesh T Patel, Burgess B Freeman, Arzu Onar-Thomas, Clinton F Stewart, Martine F Roussel, R Kiplin Guy, Thomas E Merchant, Christopher Calabrese, Karen D Wright, Richard J Gilbertson
PURPOSE: Curing all children with brain tumors will require an understanding of how each subtype responds to conventional treatments and how best to combine existing and novel therapies.  It is extremely challenging to acquire this knowledge in the clinic alone, especially among patients with rare tumors.  Therefore, we developed a preclinical brain tumor platform to test combinations of conventional and novel therapies in a manner that closely recapitulates clinic trials.  Experimental Design: A multidisciplinary team was established to design and conduct neurosurgical, fractionated radiotherapy and chemotherapy studies, alone or in combination, in accurate mouse models of supratentorial ependymoma (SEP) subtypes and choroid plexus carcinoma (CPC)...
January 4, 2018: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/29297806/extension-of-the-known-host-range-of-intranuclear-coccidiosis-infection-in-three-captive-red-footed-tortoises-chelonoidis-carbonaria
#5
Justin M Stilwell, Natalie K Stilwell, Nicole I Stacy, James F X Wellehan, Lisa L Farina
The intranuclear coccidian parasite of Testudines (TINC) is an emerging pathogen of tortoises. Three captive red-footed tortoises ( Chelonoidis carbonaria) from an isolated collection presented with multiple acute, nonspecific clinical signs. One tortoise died and was diagnosed with intranuclear coccidiosis on histopathology with confirmation by quantitative polymerase chain reaction (qPCR). In addition to tissues where TINC has been previously described, coccidia were identified in the pineal gland, choroid plexus, and testicular Sertoli cells...
December 2017: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/29295802/hydrocephalus-in-pyridoxine-dependent-epilepsy-new-case-and-literature-review
#6
Virginia Navarro-Abia, María Soriano-Ramos, Noemí Núñez-Enamorado, Ana Camacho-Salas, Ana Martinez-de Aragón, Elena Martín-Hernández, Rogelio Simón-de Las Heras
INTRODUCTION: Pyridoxine-dependent epilepsy (PDE) is a rare disorder of the lysine metabolism, characterized by a pharmacoresistant epileptic encephalopathy that usually begins in the neonatal period. However, its phenotypic spectrum is wide and not limited to seizures. We report a new case of PDE who developed hydrocephalus, along with an exhaustive review of the literature. CASE REPORT: Our patient presented with seizures at 13 h of life. Antiepileptic drugs, vitamins and cofactors were required to achieve seizure control...
December 30, 2017: Brain & Development
https://www.readbyqxmd.com/read/29288639/retinal-vascular-impairment-in-best-vitelliform-macular-dystrophy-assessed-by-means-of-optical-coherence-tomography-angiography
#7
Maurizio Battaglia Parodi, Francesco Romano, Maria Vittoria Cicinelli, Alessandro Rabiolo, Alessandro Arrigo, Luisa Pierro, Pierluigi Iacono, Francesco Bandello
PURPOSE: To evaluate vascular abnormalities at superficial (SCP), deep (DCP) capillary plexuses and choriocapillaris (CC) in patients with Best vitelliform macular dystrophy (BVMD) by means of optical coherence tomography angiography (OCT-A). DESIGN: Cross-sectional case series. METHODS: Sixty-six eyes of 33 patients with BVMD (sixteen males) and 33 controls were consecutively enrolled. Patients were subdivided in classic stages and underwent best-corrected visual acuity (BCVA), fundus autofluorescence and spectral domain-optical coherence tomography (Spectralis HRA+OCT; Heidelberg Engineering), and 4...
December 27, 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/29273325/application-of-europium-doped-very-small-iron-oxide-nanoparticles-to-visualize-neuroinflammation-with-mri-and-fluorescence-microscopy
#8
Jason M Millward, Angela Ariza de Schellenberger, Dominique Berndt, Laura Hanke-Vela, Eyk Schellenberger, Sonia Waiczies, Matthias Taupitz, Yuske Kobayashi, Susanne Wagner, Carmen Infante-Duarte
Our recent studies demonstrated that electrostatically stabilized very small superparamagnetic iron oxide particles (VSOP) are promising MRI probes for detecting various pathological aspects of autoimmunity in the central nervous system (CNS). However, investigation of the precise tissue and cellular distribution of VSOP has been technically limited due to the need to use iron detection methods for VSOP visualization. Therefore, we assessed here the utility of europium (Eu)-doped VSOP as an MRI tool for in vivo investigations in the animal model experimental autoimmune encephalomyelitis (EAE), and as a tool to investigate histopathological processes in the CNS using fluorescence microscopy...
December 19, 2017: Neuroscience
https://www.readbyqxmd.com/read/29262276/endoscopic-treatment-versus-shunting-for-infant-hydrocephalus-in-uganda
#9
RANDOMIZED CONTROLLED TRIAL
Abhaya V Kulkarni, Steven J Schiff, Edith Mbabazi-Kabachelor, John Mugamba, Peter Ssenyonga, Ruth Donnelly, Jody Levenbach, Vishal Monga, Mallory Peterson, Michael MacDonald, Venkateswararao Cherukuri, Benjamin C Warf
BACKGROUND: Postinfectious hydrocephalus in infants is a major health problem in sub-Saharan Africa. The conventional treatment is ventriculoperitoneal shunting, but surgeons are usually not immediately available to revise shunts when they fail. Endoscopic third ventriculostomy with choroid plexus cauterization (ETV-CPC) is an alternative treatment that is less subject to late failure but is also less likely than shunting to result in a reduction in ventricular size that might facilitate better brain growth and cognitive outcomes...
December 21, 2017: New England Journal of Medicine
https://www.readbyqxmd.com/read/29258921/the-choroid-plexus-epithelium-as-a-novel-player-in-the-stomach-brain-axis-during-helicobacter-infection
#10
N Gorlé, C Blaecher, E Bauwens, C Vandendriessche, S Balusu, J Vandewalle, C Van Cauwenberghe, E Van Wonterghem, G Van Imschoot, C Liu, R Ducatelle, C Libert, F Haesebrouck, A Smet, R E Vandenbroucke
Several studies suggest a link between shifts in gut microbiota and neurological disorders. Recently, we reported a high prevalence of Helicobacter suis (H. suis) in patients with Parkinson's disease. Here, we evaluated the effect of gastric H. suis infection on the brain in mice. One month of infection with H. suis resulted in increased brain inflammation, reflected in activation of microglia and cognitive decline. Additionally, we detected choroid plexus inflammation and disruption of the epithelial blood-cerebrospinal fluid (CSF) barrier upon H...
December 16, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/29250452/optical-coherence-tomography-angiography-of-macular-telangiectasia-type-2-with-associated-subretinal-neovascular-membrane
#11
Victor M Villegas, Jaclyn L Kovach
Optical coherence tomography angiography (OCTA) is a recently established noninvasive technology for evaluation of the retinal and choroidal vasculature. The literature regarding the findings in macular telangiectasia type 2 (MacTel2) is scarce. We report the OCTA findings associated with a subject with MacTel2 and secondary subretinal neovascularization (SNV). The commercially available Cirrus 5000 with AngioPlex (Zeiss, Jena, Germany) was used, without any subsequent image modification or processing. Subretinal neovascularization was detectable with OCTA at the level of the outer retina and choriocapillaris...
2017: Case Reports in Ophthalmological Medicine
https://www.readbyqxmd.com/read/29247539/fluorescein-sodium-guided-resection-of-intracranial-lesions-in-22-dogs
#12
Yukiko Nakano, Kohei Nakata, Sanae Shibata, Yasuhiro Heishima, Hidetaka Nishida, Hiroki Sakai, Hirohito Yano, Hiroaki Kamishina
OBJECTIVE: To evaluate the safety of an intraoperative fluorescein sodium (FS) injection and elucidate the relationships between the MRI findings, pathological diagnoses, and intraoperative staining characteristics of intracranial lesions in 22 dogs. STUDY DESIGN: Prospective case series. ANIMALS: Twenty-two dogs with intracranial lesions. METHODS: FS was intravenously administered to 22 dogs undergoing craniotomy for suspected intracranial tumors to evaluate perioperative and postoperative adverse effects...
December 16, 2017: Veterinary Surgery: VS
https://www.readbyqxmd.com/read/29243972/endoscopic-third-ventriculostomy-and-choroid-plexus-cauterization-in-infant-hydrocephalus-a-prospective-study-by-the-hydrocephalus-clinical-research-network
#13
Abhaya V Kulkarni, Jay Riva-Cambrin, Curtis J Rozzelle, Robert P Naftel, Jessica S Alvey, Ron W Reeder, Richard Holubkov, Samuel R Browd, D Douglas Cochrane, David D Limbrick, Tamara D Simon, Mandeep Tamber, John C Wellons, William E Whitehead, John R W Kestle
OBJECTIVE High-quality data comparing endoscopic third ventriculostomy (ETV) with choroid plexus cauterization (CPC) to shunt and ETV alone in North America are greatly lacking. To address this, the Hydrocephalus Clinical Research Network (HCRN) conducted a prospective study of ETV+CPC in infants. Here, these prospective data are presented and compared to prospectively collected data from a historical cohort of infants treated with shunt or ETV alone. METHODS From June 2014 to September 2015, infants (corrected age ≤ 24 months) requiring treatment for hydrocephalus with anatomy suitable for ETV+CPC were entered into a prospective study at 9 HCRN centers...
December 15, 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/29201837/expression-of-aquaporin-1-and-4-in-the-choroid-plexus-and-brain-parenchyma-of-kaolin-induced-hydrocephalic-rats
#14
Taehyung Jeon, Ki-Su Park, Seong-Hyun Park, Jeong-Hyun Hwang, Sung Kyoo Hwang
Objective: Aquaporin (AQP) is a recently discovered protein that regulates water homeostasis. The present study examines changes in AQP 1 and 4 in kaolin induced experimental hydrocephalic rats to elucidate the pathophysiology of water homeostasis in the disease. Methods: Hydrocephalus was induced by percutaneous intracisternal injection of kaolin. The brain parenchyma and choroid plexus were obtained at 3, 7, 14 and 30 days after injection. Protein expressions of AQP 1 and 4 were measured by western blot, immunohistochemistry (IHC) and immunofluorescence (IF) stains...
October 2017: Korean Journal of Neurotrauma
https://www.readbyqxmd.com/read/29196107/distribution-of-smad-mrna-and-proteins-in-the-rat-brain
#15
Takayuki Nakajima, Ryusuke Hata, Yuji Kunieda, Tomohiro Kondo
Smad proteins are known to transduce the action of TGF-β superfamily proteins including TGF-βs, activins, and bone morphogenetic proteins (BMPs). In this study, we examined the expression of Smad1, -2, -3, -4, -5, and -8 mRNA in the rat brain by means of RT-PCR and in situ hybridization (ISH). In addition, we examined the nuclear accumulation of Smad1, -2, -3, -5, and -8 proteins after intracerebroventricular injection of TGF-β1, activin A, or BMP6 with immunohistochemistry to investigate whether TGF-β, activin, and/or BMP activate Smads in the rat brain...
November 28, 2017: Journal of Chemical Neuroanatomy
https://www.readbyqxmd.com/read/29195132/lycopene-mitigates-%C3%AE-amyloid-induced-inflammatory-response-and-inhibits-nf-%C3%AE%C2%BAb-signaling-at-the-choroid-plexus-in-early-stages-of-alzheimer-s-disease-rats
#16
Chong-Bin Liu, Rui Wang, Yan-Feng Yi, Zhen Gao, Yi-Zhu Chen
The choroid plexus is able to modulate the cognitive function, through changes in the neuroinflammatory response and in brain immune surveillance. However, whether lycopene is involved in inflammatory responses at the choroid plexus in the early stages of Alzheimer's disease, and its molecular underpinnings are elusive. In this rat study, lycopene was used to investigate its protective effects on inflammation caused by β-amyloid. We characterized the learning and memory abilities, cytokine profiles of circulating TNF-α, IL-1β and IL-6β in the serum and the expressions of Toll like receptor 4 and nuclear factor-κB p65 mRNA and protein at the choroid plexus...
November 28, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/29194293/multiple-pathological-mechanisms-contribute-to-hippocampal-damage-in-the-experimental-autoimmune-encephalomyelitis-model-of-multiple-sclerosis
#17
Elizabeth L Kyran, Christine Robinson, Pece Kocovski, Zhenjiang Li, Phuc T Dang, Matthew W Hale, Jacqueline M Orian
Emotional and cognitive deficits and associated hippocampal damage observed in multiple sclerosis (MS) are now recognized as primary disease manifestations. However, the pathological substrate of these dysfunctions is unclear. In the experimental autoimmune encephalomyelitis (EAE) MS model, impaired hippocampal-dependent functions are concomitant with severe microglial reactivity and neurodegeneration, but reports vary with respect to evidence of lymphocytic infiltration, raising questions as to the nature of the underlying neurodegenerative mechanisms...
January 3, 2018: Neuroreport
https://www.readbyqxmd.com/read/29190246/optical-coherence-tomography-angiography-findings-of-deep-capillary-plexus-microischemia-after-intravenous-chemotherapy-for-retinoblastoma
#18
Kareem Sioufi, Emil A T Say, Sandor C Ferenczy, Ann M Leahey, Carol L Shields
PURPOSE: To study changes in the foveal microvascular anatomy using optical coherence tomography angiography (OCTA) after intravenous chemotherapy (IVC) for retinoblastoma (RB). METHODS: A retrospective comparative case-control series included 10 age-matched normal eyes with no documented ocular pathology (control), 10 fellow eyes of patients with unilateral RB treated with IVC (RB fellow), and 10 eyes with extramacular RB in patients with bilateral RB treated with IVC (RB tumor)...
November 22, 2017: Retina
https://www.readbyqxmd.com/read/29185462/histopathological-immunohistochemical-and-ultrastructural-evidence-of-spontaneous-senecavirus-a-induced-lesions-at-the-choroid-plexus-of-newborn-piglets
#19
Thalita E S Oliveira, Mariana M Z Michelazzo, Thiago Fernandes, Admilton G de Oliveira, Raquel A Leme, Alice F Alfieri, Amauri A Alfieri, Selwyn A Headley
Epidemic Transient Neonatal Losses (ETNL) is a disease of piglets caused by Senecavirus A (SVA) in which the method of dissemination and associated lesions are not well-defined. This study investigated the possible SVA-induced lesions by examining spontaneous infections in newborn piglets. Histopathology revealed ballooning degeneration of transitional epithelium, nonsuppurative meningoencephalitis, plexus choroiditis, and atrophic enteritis. RT-PCR identified SVA in all tissues evaluated and sequencing confirmed these results...
November 29, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29184717/intraventricular-hemorrhage-possibly-extending-from-an-infratentorial-subdural-hematoma-via-a-perforated-suprapineal-recessus-in-a-full-term-neonate
#20
Yoichiro Serita, Takato Morioka, Nobuya Murakami, Nobuko Kawamura, Yasushi Takahata, Ryutaro Kira
Background: Although intraventricular hemorrhage (IVH) is very rarely reported in full-term neonates, it may occur in children with perinatal trauma, asphyxia, and coagulation disorders, and may originate in the choroid plexus and residual subependymal germinal matrix layer. Case Description: We present the case of a full-term baby with IVH. She had no perinatal problems or coagulation disorders. Sagittal views of neuroimages demonstrated that the IVH possibly extended from a subdural hemorrhage (SDH) in the infratentorial area via a perforated suprapineal recessus...
2017: Surgical Neurology International
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