keyword
MENU ▼
Read by QxMD icon Read
search

Mesencephalon

keyword
https://www.readbyqxmd.com/read/29666335/identification-molecular-characterization-and-analysis-of-the-expression-pattern-of-soxf-subgroup-genes-the-yellow-river-carp-cyprinus-carpio
#1
Tingting Liang, Yongfang Jia, Ruihua Zhang, Qiyan Du, Zhongjie Chang
Sox7, Sox17 and Sox18 are the members of the Sry-related high-mobility group box family (SoxF) of transcription factors. SoxF factors regulate endothelial cell fate as well as development and differentiation of blood cells and lymphatic vessels. There is very less information about the functions of these genes in fish. We obtained the full-length cDNA sequence of SoxF genes including Sox7, Sox17 and Sox18 in Cyprinus carpio, where Sox7 and Sox18 had two copies. The construction of a phylogenetic tree showed that these genes were homologous to the genes in other species...
March 2018: Journal of Genetics
https://www.readbyqxmd.com/read/29649851/primary-malignant-melanoma-in-the-pineal-region-case-report-and-literature-review
#2
Christopher Wendel, Denis Laurent Kaech, Martin Woodtli
BACKGROUND:  Primary pineal malignant melanoma is a rare type of primary central nervous system melanoma with only 19 cases reported in the literature. CASE REPORT:  We present a case of a 53-year-old man with primary melanoma of the pineal region. He presented to the emergency department with gait unsteadiness and ataxia. Magnetic resonance imaging (MRI) revealed a 22 × 17 × 22-mm mass in the pineal region. On MRI the tumor was hyperintense in T1, isointense in T2, and on T1-weighted images with gadolinium enhancement it appeared homogeneously hyperintense with hypointense spots...
April 12, 2018: Journal of Neurological Surgery. Part A, Central European Neurosurgery
https://www.readbyqxmd.com/read/29599444/environmental-complexity-buffers-against-stress-induced-negative-judgement-bias-in-female-chickens
#3
Josefina Zidar, Irene Campderrich, Emelie Jansson, Anette Wichman, Svante Winberg, Linda Keeling, Hanne Løvlie
Cognitive processes are often biased by emotions. In humans, affective disorders are accompanied by pessimistic judgement, while optimistic judgement is linked to emotional stability. Similar to humans, animals tend to interpret ambiguous stimuli negatively after experiencing stressful events, although the long-lasting impact on judgement bias has rarely been investigated. We measure judgement bias in female chicks (Gallus gallus domesticus) after exposure to cold stress, and before and after exposure to additional unpredictable stressors...
March 29, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29576980/the-right-thalamus-may-play-an-important-role-in-anesthesia-awakening-regulation-in-frogs
#4
Yanzhu Fan, Xizi Yue, Fei Xue, Steven E Brauth, Yezhong Tang, Guangzhan Fang
Background: Previous studies have shown that the mammalian thalamus is a key structure for anesthesia-induced unconsciousness and anesthesia-awakening regulation. However, both the dynamic characteristics and probable lateralization of thalamic functioning during anesthesia-awakening regulation are not fully understood, and little is known of the evolutionary basis of the role of the thalamus in anesthesia-awakening regulation. Methods: An amphibian species, the South African clawed frog ( Xenopus laevis ) was used in the present study...
2018: PeerJ
https://www.readbyqxmd.com/read/29559783/association-between-etiology-and-lesion-site-in-ischemic-brainstem-infarcts-a-retrospective-observational-study
#5
Gozde Baran, Tugce Ozdemir Gultekin, Oguz Baran, Cigdem Deniz, Salim Katar, Gulsen Babacan Yildiz, Talip Asil
Background and purpose: To assess the anatomical distribution of the ischemic strokes of the brainstem, the effect of anatomical distribution on clinical features and prognosis, and the association between etiology and anatomical involvement. Methods: A retrospective search of the patient database of our institution was performed for a total of 227 patients who were admitted to the Department of Neurology, Medical Faculty of Bezmialem Vakif University between January 2012 and September 2014...
2018: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/29487507/putative-adult-neurogenesis-in-old-world-parrots-the-congo-african-grey-parrot-psittacus-erithacus-and-timneh-grey-parrot-psittacus-timneh
#6
Pedzisai Mazengenya, Adhil Bhagwandin, Paul R Manger, Amadi O Ihunwo
In the current study, we examined for the first time, the potential for adult neurogenesis throughout the brain of the Congo African grey parrot ( Psittacus erithacus ) and Timneh grey parrot ( Psittacus timneh ) using immunohistochemistry for the endogenous markers proliferating cell nuclear antigen (PCNA), which labels proliferating cells, and doublecortin (DCX), which stains immature and migrating neurons. A similar distribution of PCNA and DCX immunoreactivity was found throughout the brain of the Congo African grey and Timneh grey parrots, but minor differences were also observed...
2018: Frontiers in Neuroanatomy
https://www.readbyqxmd.com/read/29486223/exposure-of-human-neurons-to-silver-nanoparticles-induces-similar-pattern-of-abc-transporters-gene-expression-as-differentiation-study-on-proliferating-and-post-mitotic-luhmes-cells
#7
M Zuberek, T M Stępkowski, M Kruszewski, A Grzelak
The Lund human mesencephalic (LUHMES) cell line originated from mesencephalon of 8-week human foetus is a renowned in vitro model of human dopaminergic neurons. After differentiation the cells exhibit dopaminergic and neuronal characteristics of biochemically and morphologically mature dopamine-like neurons. In this study we analysed expression of 42 genes from ABC transporter superfamily in both proliferating cells and differentiated neurons after treatment with silver nanoparticles. ABC transporter superfamily is especially known due to the involvement in multidrug resistance phenomenon, but also involvement in transport through blood-brain barrier...
February 24, 2018: Mechanisms of Ageing and Development
https://www.readbyqxmd.com/read/29468174/brain-atrophy-measures-in-preclinical-and-manifest-spinocerebellar-ataxia-type-2
#8
Kathrin Reetz, Roberto Rodríguez-Labrada, Imis Dogan, Shahram Mirzazade, Sandro Romanzetti, Jörg B Schulz, Edilia M Cruz-Rivas, Jose A Alvarez-Cuesta, Raul Aguilera Rodríguez, Yanetza Gonzalez Zaldivar, Georg Auburger, Luis Velázquez-Pérez
Objective: Spinocerebellar ataxia type 2 (SCA2) is an autosomal dominantly inherited neurodegenerative disease mainly affecting the cerebellum and brainstem. In this Cuban-German research collaboration, we aimed to characterize atrophy patterns and associations with clinical measures in preclinical and manifest SCA2. Methods: In this study, 16 nonmanifest SCA2 mutation carriers, 26 manifest patients with SCA2, and 18 healthy control subjects underwent magnetic resonance imaging, as well as genetic and clinical characterization including assessment of ataxia (Scale for the Assessment and Rating of Ataxia) and saccade velocity in Cuba were enrolled...
February 2018: Annals of Clinical and Translational Neurology
https://www.readbyqxmd.com/read/29457875/variations-of-the-circle-of-willis-at-the-end-of-the-human-embryonic-period
#9
Kana Furuichi, Aoi Ishikawa, Chigako Uwabe, Haruyuki Makishima, Shigehito Yamada, Tetsuya Takakuwa
Variations of the circle of Willis (CW) influence blood supply to the brain and adjacent structures in adults. We examined the formation of the CW in 20 human embryo samples at the end of the embryonic period using 3-D reconstructions of serial histological sections. The CW was closed in all samples, and did not form in a single plane, but was composed of multiple stair-like planes. The artery acutely curved at the caudal part of the CW, namely at the inlet of the basilar artery and bifurcation of the P1 segment of the posterior cerebral artery (PCA), reflecting flexure of the mesencephalon and diencephalon at this stage...
February 19, 2018: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/29387530/connectivity-derived-thalamic-segmentation-in-deep-brain-stimulation-for-tremor
#10
Harith Akram, Viswas Dayal, Philipp Mahlknecht, Dejan Georgiev, Jonathan Hyam, Thomas Foltynie, Patricia Limousin, Enrico De Vita, Marjan Jahanshahi, John Ashburner, Tim Behrens, Marwan Hariz, Ludvic Zrinzo
The ventral intermediate nucleus (VIM) of the thalamus is an established surgical target for stereotactic ablation and deep brain stimulation (DBS) in the treatment of tremor in Parkinson's disease (PD) and essential tremor (ET). It is centrally placed on a cerebello-thalamo-cortical network connecting the primary motor cortex, to the dentate nucleus of the contralateral cerebellum through the dentato-rubro-thalamic tract (DRT). The VIM is not readily visible on conventional MR imaging, so identifying the surgical target traditionally involved indirect targeting that relies on atlas-defined coordinates...
2018: NeuroImage: Clinical
https://www.readbyqxmd.com/read/29374313/-importance-of-virchow-robin-spaces
#11
REVIEW
W Reith, A Haußmann
Virchow-Robin spaces are perivascular fluid-filled cavities that surround perforating arteries and veins in the brain parenchyma. As a rule in healthy people they are approximately 5 mm in diameter. Typical localizations are brainstem ganglia, mesencephalon and the white matter of the brain. Morphological imaging characteristics of Virchow-Robin spaces are round or tubular, smoothly bordered areas which are hyperintense in T2-weighted sequences. Virchow-Robin spaces represent a physiological structure in normal brain parenchyma...
January 26, 2018: Der Radiologe
https://www.readbyqxmd.com/read/29363733/generation-of-specific-antisera-directed-against-d-amino-acids-focus-on-the-neuroanatomical-distribution-of-d-glutamate-and-other-d-amino-acids
#12
Rafael Coveñas, Arturo Mangas, Manuel Lisardo Sànchez, Diana Cadena, Marianne Husson, Michel Geffard
This review updates the findings about the anatomical distribution (using immunohistochemical techniques) and possible functions of D-glutamate in the central nervous system of mammals, as well as compares the distribution of D-glutamate with the distribution of the most studied D-amino acids: D-serine and D-aspartate. The protocol used to obtain highly specific antisera directed against D-amino acids is also reported. Immunoreactivity for D-glutamate was found in dendrites and cell bodies, but not in nerve fibers...
January 24, 2018: Folia Histochemica et Cytobiologica
https://www.readbyqxmd.com/read/29361582/auditory-neural-networks-involved-in-attention-modulation-prefer-biologically-significant-sounds-and-exhibit-sexual-dimorphism-in-anurans
#13
Fei Xue, Xizi Yue, Yanzhu Fan, Jianguo Cui, Steven E Brauth, Yezhong Tang, Guangzhan Fang
Allocating attention to biologically relevant stimuli in a complex environment is critically important for survival and reproductive success. In humans, attention modulation is regulated by the frontal cortex, and is often reflected by changes in specific components of the event-related potential (ERP). Although brain networks for attention modulation have been widely studied in primates and avian species, little is known about attention modulation in amphibians. The present study aimed to investigate the attention modulation networks in an anuran species, the Emei music frog ( Babina daunchina )...
March 9, 2018: Journal of Experimental Biology
https://www.readbyqxmd.com/read/29336643/measurement-of-fetal-mesencephalon-and-pons-via-ultrasonographic-cross-sectional-imagining
#14
Ruiqi Yang, Rui Li, Xuejuan Liu, Limei Fan, Jialing Zhang, Libo Wang, Hong Teng
OBJECTIVES: This study evaluated the feasibility of measuring the fetal mesencephalon and pons by ultrasonographic cross sectional imaging to detect fetal central nervous system developmental abnormalities. MATERIALS AND METHODS: Fetal ultrasonographic measurements included: Fetal mesencephalon anteroposterior diameters (MAD), mesencephalon transverse diameters (MTD), pons anteroposterior diameter (PAD) and proximal transverse diameters (PTD). RESULTS: Nine-hundred ninety fetuses were imaged...
February 2018: Fetal and Pediatric Pathology
https://www.readbyqxmd.com/read/29333914/hybrid-pet-mri-imaging-in-healthy-unsedated-newborn-infants-with-quantitative-rcbf-measurements-using-15-o-water-pet
#15
Julie B Andersen, Ulrich Lindberg, Oline V Olesen, Didier Benoit, Claes N Ladefoged, Henrik Bw Larsson, Liselotte Højgaard, Gorm Greisen, Ian Law
In this study, a new hybrid PET/MRI method for quantitative regional cerebral blood flow (rCBF) measurements in healthy newborn infants was assessed and the low values of rCBF in white matter previously obtained by arterial spin labeling (ASL) were tested. Four healthy full-term newborn subjects were scanned in a PET/MRI scanner during natural sleep after median intravenous injection of 14 MBq 15 O-water. Regional CBF was quantified using a one-tissue-compartment model employing an image-derived input function (IDIF) from the left ventricle...
January 1, 2018: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/29298210/electrophysiology-of-cranial-nerve-testing-auditory-nerve
#16
Alan D Legatt
The electrocochleogram and brainstem auditory evoked potentials (BAEPs) are electrophysiologic signals used to assess the auditory nerve. The electrocohleogram includes the cochlear microphonic, the cochlear summating potential, and the eighth nerve compound action potential. It is used predominantly for hearing assessment and for diagnosis of Ménière disease and auditory neuropathy. Brainstem auditory evoked potentials are used for hearing assessment, diagnosis of dysfunction within the cochlea, the auditory nerve, and the brainstem auditory pathways up to the level of the mesencephalon, and intraoperative monitoring of these structures...
January 2018: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://www.readbyqxmd.com/read/29281030/motor-learning-and-metaplasticity-in-striatal-neurons-relevance-for-parkinson-s-disease
#17
Nadia Giordano, Attilio Iemolo, Maria Mancini, Fabrizio Cacace, Maria De Risi, Emanuele Claudio Latagliata, Veronica Ghiglieri, Gian Carlo Bellenchi, Stefano Puglisi-Allegra, Paolo Calabresi, Barbara Picconi, Elvira De Leonibus
Nigro-striatal dopamine transmission is central to a wide range of neuronal functions, including skill learning, which is disrupted in several pathologies such as Parkinson's disease. The synaptic plasticity mechanisms, by which initial motor learning is stored for long time periods in striatal neurons, to then be gradually optimized upon subsequent training, remain unexplored. Addressing this issue is crucial to identify the synaptic and molecular mechanisms involved in striatal-dependent learning impairment in Parkinson's disease...
February 1, 2018: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/29260606/diffusion-weighted-imaging-of-normal-appearing-corticospinal-tracts-in-patients-with-multiple-sclerosis
#18
Kadihan Yalçın-Şafak, Ahmet Akça, Özlem Elibol, İrem Sarı
Aim To determine if there are differences in ADC values between normal appearing corticospinal tracks in patients with MS compared to ADC values in controls. Material and methods The study population comprised 62 consecutive MS patients (36 women and 26 men; mean age 36.45±8.63 years). 50 control subjects with no neurological disabilities or intracranial were included the study (32 women and 18 men; mean age 40.18±12.25 years). All ADC maps were independently evaluated by two experienced radiologists. ROI of approximately 15-18 mm2 in capsula interna and 10-12 mm2 in mesencephalon were placed bilaterally for measurement of ADC values...
April 2018: Neuroradiology Journal
https://www.readbyqxmd.com/read/29238219/hypoxia-stress-modifies-na-k-atpase-h-k-atpase-formula-see-text-and-nka%C3%AE-1-isoform-expression-in-the-brain-of-immune-challenged-air-breathing-fish
#19
Mc Subhash Peter, Satheesan Simi
Fishes are equipped to sense stressful stimuli and are able to respond to environmental stressor such as hypoxia with varying pattern of stress response. The functional attributes of brain to hypoxia stress in relation to ion transport and its interaction during immune challenge have not yet delineated in fish. We, therefore, explored the pattern of ion transporter functions and messenger RNA (mRNA) expression of α1-subunit isoforms of Na+ /K+ -ATPase (NKA) in the brain segments, namely, prosencephalon (PC), mesencephalon (MC), and metencephalon (MeC) in an obligate air-breathing fish exposed either to hypoxia stress (30 minutes forced immersion in water) or challenged with zymosan treatment (25-200 ng g-1 for 24 hours) or both...
2017: Journal of Experimental Neuroscience
https://www.readbyqxmd.com/read/29213521/distinct-phospho-tdp-43-brain-distribution-in-two-cases-of-ftd-one-associated-with-als
#20
Álvaro C B Guedes, Ricardo Santin, André S R Costa, Keli C Reiter, Arlete Hilbig, Liana L Fernandez
INTRODUCTION: TDP-43 is an intranuclear protein involved in many cellular processes. When altered, it shows a change in pattern of distribution, as well as in functioning, throughout the Central Nervous System structures. Frontotemporal Lobar Degeneration (FTLD) and Amyotrophic Lateral Sclerosis (ALS) are examples of TDP-43 proteinopathy. These disorders form a clinical spectrum, with some patients having a pure cognitive disorder while others also exhibit motor features. METHODS: We studied two donated brains from patients with a diagnosis of Frontotemporal Dementia (FTD), one of which was associated with ALS (ALS-FTD)...
July 2017: Dementia & Neuropsychologia
keyword
keyword
38988
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"