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https://www.readbyqxmd.com/read/29243534/eight-and-a-half-syndrome-caused-by-a-pontine-hemorrhage-a-case-report-and-review-of-the-literature
#1
Nian-Ge Xia, Yan-Yan Chen, Jia Li, Xi Chen, Zu-Sen Ye, Si-Yan Chen, Zhen-Guo Zhu
BACKGROUND: Eight-and-a-half syndrome is caused by a lesion in the dorsal tegmentum of the caudal pons involving parapontine reticular formation (PPRF) and the median longitudinal fasciculus (MLF), as well as the nucleus and/or the fasciculus of the facial nerve. It is characterized by one-and-a-half syndrome and an ipsilateral cranial nerve VII palsy. There are also many variants of eight-and-a-half syndrome has been described, including nine syndrome, thirteen-and-a-half syndrome, and fifteen-and-a-half syndrome...
December 15, 2017: International Journal of Neuroscience
https://www.readbyqxmd.com/read/29243319/zebrafish-rfx4-controls-dorsal-and-ventral-midline-formation-in-the-neural-tube
#2
Irina Sedykh, Abigail N Keller, Baul Yoon, Laura Roberson, Oleg V Moskvin, Yevgenya Grinblat
BACKGROUND: Rfx winged-helix transcription factors, best known as key regulators of core ciliogenesis, also play ciliogenesis-independent roles during neural development. Mammalian Rfx4 controls neural tube morphogenesis via both mechanisms. RESULTS: We set out to identify conserved aspects of rfx4 gene function during vertebrate development and to establish a new genetic model in which to analyze these mechanisms further. To this end, we have generated frame-shift alleles in the zebrafish rfx4 locus using CRISPR/Cas9 mutagenesis...
December 15, 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/29242425/-i-physoschistura-i-i-harkishorei-i-a-new-species-of-loach-from-arunachal-pradesh-north-eastern-india-teleostei-nemacheilidae
#3
Debangshu Narayan DAS, Achom Darshan
Physoschistura harkishorei, a new species of nemacheilid loach, is described from the Dibang and Lohit Rivers of Arunachal Pradesh, north-eastern India. The new species can be distinguished from all known congeners by the combination of the following characters: the second branched ray of pectoral fin with a distal filamentous extension; body colour pattern consisting of 9-10 vertically-elongated brownish spots or blotches along the flank, and 8-10 brownish saddles on back, the saddles not contiguous with the lateral blotches; lateral line complete; prominent, well-developed pelvic-fin lobe; a well-developed free posterior chamber of the air-bladder; and caudal fin with 7+8 branched rays...
October 19, 2017: Zootaxa
https://www.readbyqxmd.com/read/29239307/on-the-role-of-tip-curvature-on-flapping-plates
#4
Nathan Koon-Hung Martin, Morteza Gharib
During the flapping motion of a fish's tail, the caudal fin exhibits antero-posterior bending and dorso-ventral bending, the latter of which is referred to as chord-wise bending herein. The impact of chord-wise tip curvature on the hydrodynamic forces for flapping plates is investigated to explore potential mechanisms to improve the maneuverability or the performance of autonomous underwater vehicles (AUVs). First, actuated chord-wise tip curvature is explored. Comparison of rigid curved geometries to a rigid flat plate as a baseline suggests that an increased curvature decreases the generated forces...
December 14, 2017: Bioinspiration & Biomimetics
https://www.readbyqxmd.com/read/29239288/metaxonchium-toroense-n-sp-nematoda-dorylaimida-belondiridae-from-costa-rica-with-the-first-molecular-study-of-a-representative-of-the-genus
#5
I Varela-Benavides, R Peña-Santiago
The new species Metaxonchium toroense n. sp. from natural habitats of Costa Rica is described, including light microscopy (LM), scanning electron microscopy (SEM) and molecular (D2-D3 28S rDNA) analyses. The new species is characterized by its general size, the dimensions and appearance of its lip region, the length of the odontostyle and its fusiform aspect, the length of the neck and its pharyngeal expansion, the reduction of the anterior genital branch to a very short uterine sac without any rudiment of ovary or oviduct, tripartite and non-echinophor posterior uterus, the somewhat posterior vulva position, the length and shape of the caudal region, and the absence of males...
December 14, 2017: Journal of Helminthology
https://www.readbyqxmd.com/read/29239286/reduced-cortical-thickness-and-increased-gyrification-in-generalized-anxiety-disorder-a-3-t-mri-study
#6
Cinzia Molent, Eleonora Maggioni, Filippo Cecchetto, Marco Garzitto, Sara Piccin, Carolina Bonivento, Marta Maieron, Serena D'Agostini, Matteo Balestrieri, Giampaolo Perna, A Carlo Altamura, Paolo Brambilla
BACKGROUND: Although the study of the neuroanatomical correlates of generalized anxiety disorder (GAD) is gaining increasing interest, up to now the cortical anatomy of GAD patients has been poorly investigated and still no data on cortical gyrification are available. The aim of the present study is to quantitatively examine the cortical morphology in patients with GAD compared with healthy controls (HC) using magnetic resonance imaging (MRI). To the best of our knowledge, this is the first study analyzing the gyrification patterns in GAD...
December 14, 2017: Psychological Medicine
https://www.readbyqxmd.com/read/29235670/presumptive-migrating-gall-bladder-mucocoele-in-two-dogs-with-gall-bladder-rupture
#7
R K Burchell, L Thornton, C K Lim, M Murakami, Y Nakamura, A Gal
A 10-year-old neutered female soft-coated wheaten terrier and a 10-year-old, entire female Pomeranian were presented for vomiting and anorexia. Using ultrasound, an oval structure with a stellate, kiwifruit-like appearance typical of a gall bladder mucocoele was observed in the caudal abdomen of the soft-coated wheaten terrier and adjacent to the liver in the Pomeranian. There was also a moderate volume of abdominal effusion in both dogs. Cytology of the peritoneal fluid indicated a sterile exudative process but varied between the two dogs, with an absence of bile pigment in the soft-coated wheaten terrier and marked bile peritonitis in the Pomeranian...
December 13, 2017: Journal of Small Animal Practice
https://www.readbyqxmd.com/read/29234953/involvement-of-microrna-23b-in-tnf-%C3%AE-reduced-bmsc-osteogenic-differentiation-via-targeting-runx2
#8
Lin Deng, Guoli Hu, Lei Jin, Chenglong Wang, Hongwen Niu
Elucidation of the molecular mechanism governing bone marrow mesenchymal stem cell (BMSC) osteogenic differentiation is of great importance for improving the treatment of osteoporosis. TNF-α is a well-known inhibitory factor during osteogenic differentiation of BMSCs. In our experiment, we consistently observed that TNF-α significantly inhibited BMSC osteogenic differentiation, which was partially rescued by BAY 11-7082 (NF-κB inhibitor). In this study, we examined the potential roles of microRNAs (miRNAs) involved in TNF-α-mediated reduction of BMSC osteogenesis...
December 12, 2017: Journal of Bone and Mineral Metabolism
https://www.readbyqxmd.com/read/29234873/predictors-for-incidence-of-increased-time-spent-in-hospital-after-ambulatory-surgery-in-children-a-retrospective-cohort-study
#9
Takaya Nishida, Takahiro Mihara, Koui Ka
PURPOSE: Recently, pediatric ambulatory surgery has become common. However, for some of these patients, unplanned admission or prolonged hospital stay is also necessary, which can increase the mental burden on these patients. The aim of this study was to identify the predictors of the incidence of increased time spent in hospitals associated with pediatric ambulatory surgery. METHODS: Data were obtained from the medical and anesthetic records of 1087 consecutive patients aged < 18 years who underwent ambulatory surgery under general anesthesia...
December 12, 2017: Journal of Anesthesia
https://www.readbyqxmd.com/read/29234131/a-gene-expression-study-of-ornamental-fin-shape-in-neolamprologus-brichardi-an-african-cichlid-species
#10
Ehsan Pashay Ahi, Florian Richter, Kristina M Sefc
The diversity of fin morphology within and across fish taxa offers great, but still largely unexplored, opportunities to investigate the proximate mechanisms underlying fin shape variation. Relying on available genetic knowledge brought forth mainly by the comprehensive study of the zebrafish caudal fin, we explored candidate molecular mechanisms for the maintenance and formation of the conspicuously elongated filaments adorning the unpaired fins of the East African "princess cichlid" Neolamprologus brichardi...
December 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29233749/an-amendment-to-the-neidre-and-macnab-classification-system-for-lumbosacral-nerve-root-anomaly-and-its-implication-in-percutaneous-endoscopic-lumbar-discectomy
#11
Chen Yu, Chang Zhengqi, Yu Xiuchun
BACKGROUND: Lumbar disc herniation complicated with nerve root anomaly presents great challenges to diagnosis and treatment, improper selection of surgical procedures may cause inferior outcomes and neurological injury. CASE DESCRIPTION: A 66-year old male presented with low back pain and radicular symptoms involving bilateral L-5 and S-1 nerve roots. Instead of percutaneous endoscopic lumbar discectomy, aggressive decompression was carried out due to deviation between examination and imaging findings...
December 9, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29230524/one-view-digital-breast-tomosynthesis-as-a-stand-alone-modality-for-breast-cancer-detection-do-we-need-more
#12
Alejandro Rodriguez-Ruiz, Albert Gubern-Merida, Mechli Imhof-Tas, Susanne Lardenoije, Alexander J T Wanders, Ingvar Andersson, Sophia Zackrisson, Kristina Lång, Magnus Dustler, Nico Karssemeijer, Ritse M Mann, Ioannis Sechopoulos
PURPOSE: To compare the performance of one-view digital breast tomosynthesis (1v-DBT) to that of three other protocols combining DBT and mammography (DM) for breast cancer detection. MATERIALS AND METHODS: Six radiologists, three experienced with 1v-DBT in screening, retrospectively reviewed 181 cases (76 malignant, 50 benign, 55 normal) in two sessions. First, they scored sequentially: 1v-DBT (medio-lateral oblique, MLO), 1v-DBT (MLO) + 1v-DM (cranio-caudal, CC) and two-view DM + DBT (2v-DM+2v-DBT)...
December 11, 2017: European Radiology
https://www.readbyqxmd.com/read/29230354/ecomorphological-inferences-in-early-vertebrates-reconstructing-dunkleosteus-terrelli-arthrodira-placodermi-caudal-fin-from-palaeoecological-data
#13
Humberto G Ferrón, Carlos Martínez-Pérez, Héctor Botella
Our knowledge about the body morphology of many extinct early vertebrates is very limited, especially in regard to their post-thoracic region. The prompt disarticulation of the dermo-skeletal elements due to taphonomic processes and the lack of a well-ossified endoskeleton in a large number of groups hinder the preservation of complete specimens. Previous reconstructions of most early vertebrates known from partial remains have been wholly based on phylogenetically closely related taxa. However, body design of fishes is determined, to a large extent, by their swimming mode and feeding niche, making it possible to recognise different morphological traits that have evolved several times in non-closely related groups with similar lifestyles...
2017: PeerJ
https://www.readbyqxmd.com/read/29230190/daith-piercing-in-a-case-of-chronic-migraine-a-possible-vagal-modulation
#14
Angelo Cascio Rizzo, Matteo Paolucci, Riccardo Altavilla, Nicoletta Brunelli, Federica Assenza, Claudia Altamura, Fabrizio Vernieri
Daith piercing is an ear piercing located at the crus of the helix, bilaterally. It is getting great consent on social media as alternative treatment in chronic migraine. No data about its efficacy and action are available in scientific literature so far. We present the case of a 54-year-old male patient suffering from refractory chronic migraine with medication-overuse, who substantially improved after bilateral ear daith piercing. His migraine was refractory to symptomatic as well as prophylactic therapies...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/29229413/constant-light-environment-suppresses-maturation-and-reduces-complexity-of-new-born-neuron-processes-in-the-hippocampus-and-caudal-nidopallium-of-a-diurnal-corvid-implication-for-impairment-of-the-learning-and-cognitive-performance
#15
S K Tahajjul Taufique, Abhilash Prabhat, Vinod Kumar
Periodic day-night environment shapes the temporal pattern in the behaviour and physiology (e.g. 24-h activity-rest and sleep-wake cycles) and the advanced brain function, such as learning, memory and decision making. In a previous study, we showed the abolition of 24-h rhythm in the activity-rest pattern, and an attenuated cognitive performance in diurnal Indian house crows (Corvus splendens) under constant light (no-night; LL) environment. Present study extended this, and investigated LL-induced effects on the neurogenesis (birth, maturation and neurite complexity of new born neurons) in the hippocampus and caudal nidopallium, the brain regions directly associated with learning and cognition in birds...
December 8, 2017: Neurobiology of Learning and Memory
https://www.readbyqxmd.com/read/29228119/rostro-caudal-connectional-heterogeneity-of-the-dorsal-part-of-the-macaque-prefrontal-area-46
#16
Elena Borra, Carolina Giulia Ferroni, Marzio Gerbella, Valentina Giorgetti, Chiara Mangiaracina, Stefano Rozzi, Giuseppe Luppino
Based on neural tracer injections we found evidence for 3 connectionally distinct sectors of the dorsal part of the macaque prefrontal area 46 (46d), located at different rostro-caudal levels. Specifically, a rostral sector displayed an almost exclusive and extensive intraprefrontal connectivity and extraprefrontal connections limited to superior temporal areas and the caudal cingulate area 31. Conversely, both a middle and a caudal sector were characterized by robust, topographically organized connections with parietal and frontal sensorimotor areas...
December 8, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/29228020/transplantation-of-canine-olfactory-ensheathing-cells-producing-chondroitinase-abc-promotes-chondroitin-sulphate-proteoglycan-digestion-and-axonal-sprouting-following-spinal-cord-injury
#17
Darren Carwardine, Jonathan Prager, Jacob Neeves, Elizabeth M Muir, James Uney, Nicolas Granger, Liang-Fong Wong
Olfactory ensheathing cell (OEC) transplantation is a promising strategy for treating spinal cord injury (SCI), as has been demonstrated in experimental SCI models and naturally occurring SCI in dogs. However, the presence of chondroitin sulphate proteoglycans within the extracellular matrix of the glial scar can inhibit efficient axonal repair and limit the therapeutic potential of OECs. Here we have used lentiviral vectors to genetically modify canine OECs to continuously deliver mammalian chondroitinase ABC at the lesion site in order to degrade the inhibitory chondroitin sulphate proteoglycans in a rodent model of spinal cord injury...
2017: PloS One
https://www.readbyqxmd.com/read/29227787/major-destructive-asymptomatic-lumbar-charcot-lesion-treated-with-three-column-resection-and-short-segment-reconstruction-case-report-treatment-strategy-and-review-of-literature
#18
Kestutis Valancius, Gaurav Garg, Madalina Duicu, Ebbe Stender Hansen, Cody Bunger
Charcot's spine is a long-term complication of spinal cord injury. The lesion is often localized at the caudal end of long fusion constructs and distal to the level of paraplegia. However, cases are rare and the literature relevant to the management of Charcot's arthropathy is limited. This paper reviews the clinical features, diagnosis, and surgical management of post-traumatic spinal neuroarthropathy in the current literature. We present a rare case of adjacent level Charcot's lesion of the lumbar spine in a paraplegic patient, primarily treated for traumatic spinal cord lesion 39 years before current surgery...
2017: SICOT-J
https://www.readbyqxmd.com/read/29226849/assessment-of-global-and-local-region-based-bilateral-mammographic-feature-asymmetry-to-predict-short-term-breast-cancer-risk
#19
Yane Li, Ming Fan, Hu Cheng, Peng Zhang, Bin Zheng, Lihua Li
This study aims to develop and test a new imaging marker-based short-term breast cancer risk prediction model. An age-matched dataset of 566 screening mammography cases was used. All "prior" images acquired in the two screening series were negative, while in the "current" screening images, 283 cases were positive for cancer and 283 cases remained negative. For each case, two bilateral cranio-caudal view mammograms acquired from the "prior" negative screenings were selected and processed by a computer-aided image processing scheme, which segmented the entire breast area into 9 strip-based local regions, extracted the element regions using difference of Gaussian filters, and computed both global- and local-based bilateral asymmetrical image features...
December 11, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/29225570/flexible-and-stable-value-coding-areas-in-caudate-head-and-tail-receive-anatomically-distinct-cortical-and-subcortical-inputs
#20
Whitney S Griggs, Hyoung F Kim, Ali Ghazizadeh, M Gabriela Costello, Kathryn M Wall, Okihide Hikosaka
Anatomically distinct areas within the basal ganglia encode flexible- and stable-value memories for visual objects (Hikosaka et al., 2014), but an important question remains: do they receive inputs from the same or different brain areas or neurons? To answer this question, we first located flexible and stable value-coding areas in the caudate head (CDh) and caudate tail (CDt) of two rhesus macaque monkeys, and then injected different retrograde tracers into these areas of each monkey. We found that CDh and CDt received different inputs from several cortical and subcortical areas including temporal cortex, prefrontal cortex, cingulate cortex, amygdala, claustrum and thalamus...
2017: Frontiers in Neuroanatomy
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