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https://www.readbyqxmd.com/read/29786653/role-for-cystathionine-%C3%AE-lyase-cse-in-an-ethanol-e-induced-lesion-in-fetal-brain-gsh-homeostasis
#1
Dhyanesh Patel, Marylatha Rathinam, Courtney Jarvis, Lenin Mahimainathan, George Henderson, Madhusudhanan Narasimhan
Earlier, we reported that gestational ethanol (E) can dysregulate neuron glutathione (GSH) homeostasis partially via impairing the EAAC1-mediated inward transport of Cysteine (Cys) and this can affect fetal brain development. In this study, we investigated if there is a role for the transulfuration pathway (TSP), a critical bio-synthetic point to supply Cys in E-induced dysregulation of GSH homeostasis. These studies utilized an in utero E binge model where the pregnant Sprague⁻Dawley (SD) rat dams received five doses of E at 3...
May 22, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29782989/nadph-oxidase-2-deletion-enhances-neurogenesis-following-traumatic-brain-injury
#2
Jing Wang, Merry W Ma, Krishnan M Dhandapani, Darrell W Brann
The NADPH oxidase (NOX) enzyme family is a major source of reactive oxygen species (ROS) and contributor to the secondary pathology underlying traumatic brain injury (TBI). However, little is known about how NOX-derived ROS influences the proliferation and cell-fate determination of neural stem/progenitor cells (NSCs/NPCs) following TBI. In the current study, we found that deletion of NOX2 (NOX2-KO) significantly decreases the population of radial glia-like NSCs and neuroblasts but maintains the population of non-radial Sox2 expressing stem cells under physiological (non-injury) conditions...
May 18, 2018: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/29768520/clinical-and-immunohistochemical-study-of-melanotic-neuroectodermal-tumor-of-infancy-in-the-maxilla
#3
Hellen Bandeira de Pontes Santos, Aníbal Henrique Barbosa de Luna, Pedro Everton Marques Goes, Alexander Tadeu Sverzut, Cassiano Francisco Weege Nonaka, Pollianna Muniz Alves
Melanotic neuroectodermal tumor of infancy is a rare and fast-growing neoplasm. In this study, we describe the case of a 6-month-old female patient, who presented swelling in the anterior maxilla. Tomographic reconstruction showed an unilocular hypodense and expansive area associated with the upper right central primary incisor. The presumptive diagnoses were dentigerous cyst, adenomatoid odontogenic tumor, melanotic neuroectodermal tumor of infancy and rhabdomyosarcoma, and an incisional biopsy was performed...
May 14, 2018: Einstein
https://www.readbyqxmd.com/read/29768082/mary-jane-hogue-1883-1962-a-pioneer-in-human-brain-tissue-culture
#4
Steven J Zottoli, Ernst-August Seyfarth
The ability to maintain human brain explants in tissue culture was a critical step in the use of these cells for the study of central nervous system disorders. Ross G. Harrison (1870-1959) was the first to successfully maintain frog medullary tissue in culture in 1907, but it took another 38 years before successful culture of human brain tissue was accomplished. One of the pioneers in this achievement was Mary Jane Hogue (1883-1962). Hogue was born into a Quaker family in 1883 in West Chester, Pennsylvania, and received her undergraduate degree from Goucher College in Baltimore, Maryland...
May 16, 2018: Journal of the History of the Neurosciences
https://www.readbyqxmd.com/read/29765950/early-neuroblastic-and-astrocytic-differentiation-demonstrated-immunohistochemically-in-a-small-intraocular-medulloepithelioma
#5
Frederick A Jakobiec, Fouad R Zakka, Thanos Papakostas, Shizuo Mukai
Purpose: To investigate the source of fibrous astrocytes and neuroblasts in a small ciliary body medulloepithelioma appearing as a leukocoria in a 3-week-old baby girl. Methods: Histopathologic and immunohistochemical studies included Alcian blue, periodic acid-Schiff, and antisera for the detection of S100 protein, CD99, glial fibrillary acidic protein (GFAP), CRX, NeuN, neurofilaments, synaptophysin, desmin, and myogenin. Results: A small, nonteratoid ciliary body medulloepithelioma with collections of Alcian blue+ mucoplysaccharides was present in the enucleated globe...
April 2018: Ocular Oncology and Pathology
https://www.readbyqxmd.com/read/29764857/lineage-guided-notch-dependent-gliogenesis-by-drosophila-multi-potent-progenitors
#6
Qingzhong Ren, Takeshi Awasaki, Yu-Chun Wang, Yu-Fen Huang, Tzumin Lee
Macroglial cells in the central nervous system exhibit regional specialization and carry out region-specific functions. Diverse glial cells arise from specific progenitors in specific spatiotemporal patterns. This raises an interesting possibility that there exist glial precursors with distinct developmental fates, which govern region-specific gliogenesis. Here we mapped the glial progeny produced by the Drosophila type II neuroblasts, which, like vertebrate radial glia cells, yield both neurons and glia via intermediate neural progenitors (INPs)...
May 15, 2018: Development
https://www.readbyqxmd.com/read/29758594/phox2b-is-a-reliable-immunomarker-in-distinguishing-peripheral-neuroblastic-tumors-from-cns-embryonal-tumors
#7
Sanda Alexandrescu, Vera Paulson, Adrian Dubuc, Azra Ligon, Hart G Lidov
INTRODUCTION: The PHOX2B gene regulates neuronal maturation in the brain stem nuclei associated with cardiorespiratory function, and in the autonomic sympathetic and enteric nervous system. PHOX2B expression is a reliable immunomarker for peripheral neuroblastic tumors, however no systematic evaluation of CNS embryonal tumors was included in the studies. We encountered two cases in which the differential diagnosis included neuroblastoma and CNS embryonal tumor, and we hypothesized that PHOX2B immunostain would be helpful establishing the diagnosis...
May 14, 2018: Histopathology
https://www.readbyqxmd.com/read/29753017/size-matters-aurora-a-controls-drosophila-larval-development
#8
Lucie Vaufrey, Christine Balducci, René Lafont, Claude Prigent, Stéphanie Le Bras
In metazoans, organisms arising from a fertilized egg, the embryo will develop through multiple series of cell divisions, both symmetric and asymmetric, leading to differentiation. Aurora A is a serine threonine kinase highly involved in such divisions. While intensively studied at the cell biology level, its function in the development of a whole organism has been neglected. Here we investigated the pleiotropic effect of Aurora A loss-of-function in Drosophila larval early development. We report that Aurora A is required for proper larval development timing control through direct and indirect means...
May 9, 2018: Developmental Biology
https://www.readbyqxmd.com/read/29752870/morphological-and-cellular-characterization-of-the-fetal-canine-canis-lupus-familiaris-subventricular-zone-rostral-migratory-stream-and-olfactory-bulb
#9
Dailiany Orechio, Bruna Andrade Aguiar, Giovanne Baroni Diniz, Jackson Cioni Bittencourt, Carlos A Haemmerle, Ii-Sei Watanabe, Maria Angelica Miglino, Patricia Castelucci
The existence of neurogenesis in the adult brain is a widely recognized phenomenon, occurring in the subventricular zone (SVZ) of the lateral ventricles and the subgranular zone of the dentate gyrus in several vertebrate species. Neural precursors originated in the SVZ migrate to the main olfactory bulb (MOB), originating the rostral migratory stream (RMS) in the process. To better understand the formation of the adult neurogenic niches in dogs, we investigated the cellular composition and morphological organization of these areas in 57 days-old dog fetuses...
May 12, 2018: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/29751968/maintaining-oncologic-integrity-with-minimally-invasive-resection-of-pediatric-embryonal-tumors
#10
Hannah M Phelps, Gregory D Ayers, Josephine M Ndolo, Hannah L Dietrich, Katherine D Watson, Melissa A Hilmes, Harold N Lovvorn
BACKGROUND: Embryonal tumors arise typically in infants and young children and are often massive at presentation. Operative resection is a cornerstone in the multimodal treatment of embryonal tumors but potentially disrupts therapeutic timelines. When used appropriately, minimally invasive surgery can minimize treatment delays. The oncologic integrity and safety attainable with minimally invasive resection of embryonal tumors, however, remains controversial. METHODS: Query of the Vanderbilt Cancer Registry identified all children treated for intracavitary, embryonal tumors during a 15-year period...
May 8, 2018: Surgery
https://www.readbyqxmd.com/read/29749639/the-homeodomain-transcription-factor-prox1-is-a-direct-target-of-soxc-proteins-during-developmental-vertebrate-neurogenesis
#11
Anne Jacob, Hannah M Wüst, Johannes M Thalhammer, Franziska Fröb, Melanie Küspert, Simone Reiprich, Elli-Anna Balta, D Chichung Lie, Michael Wegner, Elisabeth Sock
The high-mobility-group-domain containing SoxC transcription factors Sox4 and Sox11 are expressed and required in the vertebrate central nervous system in neuronal precursors and neuroblasts. To identify genes that are widely regulated by SoxC proteins during vertebrate neurogenesis we generated expression profiles from developing mouse brain and chicken neural tube with reduced SoxC expression and found the transcription factor Prox1 strongly downregulated under both conditions. This led us to hypothesize that Prox1 expression depends on SoxC proteins in the developing central nervous system of mouse and chicken...
May 11, 2018: Journal of Neurochemistry
https://www.readbyqxmd.com/read/29740101/tissue-distribution-and-cell-tropism-of-brucella-canis-in-naturally-infected-canine-foetuses-and-neonates
#12
Tayse Domingues de Souza, Tatiane Furtado de Carvalho, Juliana Pinto da Silva Mol, João Vítor Menezes Lopes, Monique Ferreira Silva, Tatiane Alves da Paixão, Renato Lima Santos
Brucella canis infection is an underdiagnosed zoonotic disease. Knowledge about perinatal brucellosis in dogs is extremely limited, although foetuses and neonates are under risk of infection due to vertical transmission. In this study, immunohistochemistry was used to determine tissue distribution and cell tropism of B. canis in canine foetuses and neonates. Diagnosis of B. canis in tissues of naturally infected pups was based on PCR and sequencing of amplicons, bacterial isolation, and immunohistochemistry, whose specificity was confirmed by laser capture microdissection...
May 8, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29727049/multifactorial-analysis-of-opsoclonus-myoclonus-syndrome-etiology-tumor-vs-no-tumor-in-a-cohort-of-356-us-children
#13
Michael R Pranzatelli, Elizabeth D Tate, Nathan R McGee
BACKGROUND: Pediatric opsoclonus-myoclonus syndrome (OMS) presents a paradox of etiopathogenesis: A neuroblastic tumor (NB) is found in only one half of the cases, the others are ascribed to infections or designated as idiopathic. METHOD: From an IRB-approved observational study of 356 US children with OMS, secondary analysis of "etiology" and related factors was performed on a well-characterized cohort. The "Tumor" (n = 173) and "No Tumor" groups (n = 183), as defined radiologically, were compared according to multiple factors considered potentially differentiating...
May 4, 2018: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/29725345/a-genome-wide-linkage-study-for-chronic-obstructive-pulmonary-disease-in-a-dutch-genetic-isolate-identifies-novel-rare-candidate-variants
#14
Ivana Nedeljkovic, Natalie Terzikhan, Judith M Vonk, Diana A van der Plaat, Lies Lahousse, Cleo C van Diemen, Brian D Hobbs, Dandi Qiao, Michael H Cho, Guy G Brusselle, Dirkje S Postma, H M Boezen, Cornelia M van Duijn, Najaf Amin
Chronic obstructive pulmonary disease (COPD) is a complex and heritable disease, associated with multiple genetic variants. Specific familial types of COPD may be explained by rare variants, which have not been widely studied. We aimed to discover rare genetic variants underlying COPD through a genome-wide linkage scan. Affected-only analysis was performed using the 6K Illumina Linkage IV Panel in 142 cases clustered in 27 families from a genetic isolate, the Erasmus Rucphen Family (ERF) study. Potential causal variants were identified by searching for shared rare variants in the exome-sequence data of the affected members of the families contributing most to the linkage peak...
2018: Frontiers in Genetics
https://www.readbyqxmd.com/read/29720264/usefulness-of-fluorodeoxyglucose-positron-emission-tomography-computed-tomography-for-detection-of-a-neuroblastic-nodule-in-a-ganglioneuroblastoma-a-case-report
#15
Yuka Takeda, Hideki Sano, Asuka Kawano, Kazuhiro Mochizuki, Nobuhisa Takahashi, Shogo Kobayashi, Yoshihiro Ohara, Kazuhiro Tasaki, Mitusuaki Hosoya, Atsushi Kikuta
BACKGROUND: Ganglioneuroblastoma, nodular is defined as a composite tumor of biologically distinct clones. The peripheral neuroblastic tumors in this category are characterized by the presence of grossly visible neuroblastoma nodules coexisting with ganglioneuroblastoma, intermixed, or with ganglioneuroma. Making a correct diagnosis of ganglioneuroblastoma, nodular is often difficult by biopsy or partial tumor resection, because the neuroblastic nodule could be hidden and not sampled for pathological examination...
May 3, 2018: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/29716946/cell-autonomous-role-of-gfr%C3%AE-1-in-the-development-of-olfactory-bulb-gabaergic-interneurons
#16
Sabrina Zechel, Diana Fernandez-Suarez, Carlos F Ibáñez
GFRα1, a receptor for glial cell line-derived neurotrophic factor (GDNF), is critical for the development of the main olfactory system. The olfactory bulb (OB) of Gfra1 knock-out mice shows significant reductions in the number of olfactory sensory neurons, mitral and tufted cells, as well as all major classes of OB GABAergic interneurons. However, the latter do not express significant levels of GFRα1, leaving the mechanism of action of GFRα1 in OB interneuron development unexplained. Here we report that GFRα1 is highly expressed in the precursor cells that give rise to all major classes of OB interneurons, but is downregulated as these neurons mature...
May 1, 2018: Biology Open
https://www.readbyqxmd.com/read/29714464/insulin-like-growth-factor-1-receptor-expression-in-pediatric-tumors-a-comparative-immunohistochemical-study
#17
Resul Karakuş, Esra Karakuş, Suna Emir, Ayper Kaçar, Derya Özyörük
Background/aim: Insulin-like growth factor-1 receptor (IGF-1R) is a pivotal receptor tyrosine kinase involved in the cell cycle and malignant tumor transformation. It is differentially expressed in various types of tumors. We aimed to determine the expression of IGF- 1R in different pediatric tumors and to shed light on possible new indications of anti-IGF-1R treatment approaches. Materials and methods: A total of 147 specimens were analyzed according to their expression of IGF-1R. Specimens included those from rhabdomyosarcomas, Wilms tumors, Ewing sarcoma/primitive neuroectodermal tumors, peripheral neuroblastic tumors, acute lymphoblastic lymphoma, Hodgkin lymphoma, Burkitt lymphoma, retinoblastoma, pleuropulmonary blastoma, Langerhans cell histiocytosis, endodermal sinus tumors (ESTs), and myeloid sarcoma...
April 30, 2018: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/29712734/centrobin-is-essential-for-c-tubule-assembly-and-flagellum-development-in-drosophila-melanogaster-spermatogenesis
#18
Jose Reina, Marco Gottardo, Maria G Riparbelli, Salud Llamazares, Giuliano Callaini, Cayetano Gonzalez
Centrobin homologues identified in different species localize on daughter centrioles. In Drosophila melanogaster sensory neurons, Centrobin (referred to as CNB in Drosophila ) inhibits basal body function. These data open the question of CNB's role in spermatocytes, where daughter and mother centrioles become basal bodies. In this study, we report that in these cells, CNB localizes equally to mother and daughter centrioles and is essential for C-tubules to attain the right position and remain attached to B-tubules as well as for centrioles to grow in length...
April 30, 2018: Journal of Cell Biology
https://www.readbyqxmd.com/read/29692711/adult-born-periglomerular-cells-of-odorant-receptor-specific-glomeruli
#19
Anna-Maria Maier, Heinz Breer, Jörg Strotmann
The OR37 subsystem is characterized by a variety of unique features. The odorant receptors (ORs) of this subfamily are selectively tuned to specific ligands which are supposed to play a role in social communication. OR37 expressing sensory neurons project their axons to a single receptor specific glomerulus per bulb which have been shown to be unusually stable in size and to possess a distinct repertoire of periglomerular cells. Since the neuronal network surrounding glomeruli is typically modified by the integration of adult born neurons, in this study it was investigated whether the number of adult born cells might be different for OR37 glomeruli compared to other OR-specific glomeruli...
2018: Frontiers in Neuroanatomy
https://www.readbyqxmd.com/read/29692663/uncommon-reasons-of-the-digestive-tract-related-paraneoplastic-syndromes-in-children-with-neuroblastic-tumors-three-case-reports
#20
Elżbieta Czkwianianc, Beata Zalewska-Szewczyk, Józef Kobos, Anna Socha-Banasiak, Szymon Janczar, Sylwia Prymus-Kasińska, Joanna Kazanek-Zasada, Wojciech Młynarski
Aim of the study: presentation of the uncommon paraneoplastic syndromes related to the gastrointestinal tract that may occur in children with neuroblastic tumors and their impact on the disease course. Material and methods: Retrospective analysis of three cases of patients mainly with digestive tract-related symptoms, who were originally admitted to the gastroenterology department from 2013 to 2016 and were finally diagnosed with neuroblastic tumors. Results: The clinical data analysis showed that the symptoms from gastrointestinal tract were dominant in analyzed subjects...
2018: Contemporary Oncology Współczesna Onkologia
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