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https://www.readbyqxmd.com/read/28102468/mutation-of-the-herc-1-ubiquitin-ligase-impairs-associative-learning-in-the-lateral-amygdala
#1
Eva Mª Pérez-Villegas, José V Negrete-Díaz, Mª Elena Porras-García, Rocío Ruiz, Angel M Carrión, Antonio Rodríguez-Moreno, José A Armengol
Tambaleante (tbl/tbl) is a mutant mouse that carries a spontaneous Gly483Glu substitution in the HERC1 (HECT domain and RCC1 domain) E3 ubiquitin ligase protein (HERC1). The tbl/tbl mutant suffers an ataxic syndrome given the almost complete loss of cerebellar Purkinje cells during adult life. More recent analyses have identified alterations at neuromuscular junctions in these mice, as well as in other neurons of the central nervous system, such as motor neurons in the spinal cord, or pyramidal neurons in the hippocampal CA3 region and the neocortex...
January 19, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28102314/improved-solar-driven-photocatalytic-performance-of-highly-crystalline-hydrogenated-tio2-nanofibers-with-core-shell-structure
#2
Ming-Chung Wu, Ching-Hsiang Chen, Wei-Kang Huang, Kai-Chi Hsiao, Ting-Han Lin, Shun-Hsiang Chan, Po-Yeh Wu, Chun-Fu Lu, Yin-Hsuan Chang, Tz-Feng Lin, Kai-Hsiang Hsu, Jen-Fu Hsu, Kun-Mu Lee, Jing-Jong Shyue, Krisztián Kordás, Wei-Fang Su
Hydrogenated titanium dioxide has attracted intensive research interests in pollutant removal applications due to its high photocatalytic activity. Herein, we demonstrate hydrogenated TiO2 nanofibers (H:TiO2 NFs) with a core-shell structure prepared by the hydrothermal synthesis and subsequent heat treatment in hydrogen flow. H:TiO2 NFs has excellent solar light absorption and photogenerated charge formation behavior as confirmed by optical absorbance, photo-Kelvin force probe microscopy and photoinduced charge carrier dynamics analyses...
January 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28102102/impact-of-thoracic-endovascular-aortic-repair-on-pulsatile-circumferential-and-longitudinal-strain-in-patients-with-aneurysm
#3
Foeke J H Nauta, Guido H W van Bogerijen, Chiara Trentin, Michele Conti, Ferdinando Auricchio, Frans L Moll, Joost A van Herwaarden, Santi Trimarchi
PURPOSE: To quantify both pulsatile longitudinal and circumferential aortic strains before and after thoracic endovascular aortic repair (TEVAR), potentially clarifying TEVAR-related complications. METHODS: This retrospective study assessed the impact of TEVAR on pulsatile aortic strains through custom developed software and cardiac-gated computed tomography imaging of 8 thoracic aneurysm patients (mean age 71.0±8.2 years; 6 men) performed before TEVAR and during follow-up (median 0...
January 1, 2017: Journal of Endovascular Therapy
https://www.readbyqxmd.com/read/28101463/development-of-a-novel-human-single-chain-antibody-against-egfrviii-antigen-by-phage-display-technology
#4
Leila Rahbarnia, Safar Farajnia, Hossein Babaei, Jafar Majidi, Bahman Akbari, Shiva Ahdi Khosroshahi
Purpose: EGFRvIII as the most common mutant variant of the epidermal growth factor receptor is resulting from deletion of exons 2-7 in the coding sequence and junction of exons 1 and 8 through a novel glycine residue. EGFRvIII is highly expressed in glioblastoma, carcinoma of the breast, ovary, and lung but not in normal cells. The aim of the present study was identification of a novel single chain antibody against EGFRvIII as a promising target for cancer therapy. Methods: In this study, a synthetic peptide corresponding to EGFRvIII protein was used for screening a naive human scFv phage library...
December 2016: Advanced Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28101326/microhomology-mediated-end-joining-new-players-join-the-team
#5
REVIEW
Hailong Wang, Xingzhi Xu
DNA double-strand breaks (DSBs) are the most deleterious type of DNA damage in cells arising from endogenous and exogenous attacks on the genomic DNA. Timely and properly repair of DSBs is important for genomic integrity and survival. MMEJ is an error-prone repair mechanism for DSBs, which relies on exposed microhomologous sequence flanking broken junction to fix DSBs in a Ku- and ligase IV-independent manner. Recently, significant progress has been made in MMEJ mechanism study. In this review, we will summarize its biochemical activities of several newly identified MMEJ factors and their biological significance...
2017: Cell & Bioscience
https://www.readbyqxmd.com/read/28100830/neural-bases-of-recommendations-differ-according-to-social-network-structure
#6
Matthew Brook O'Donnell, Joseph B Bayer, Christopher N Cascio, Emily B Falk
Ideas spread across social networks, but not everyone is equally positioned to be a successful recommender. Do individuals with more opportunities to connect otherwise unconnected others-high information brokers-use their brains differently than low information brokers when making recommendations? We test the hypothesis that those with more opportunities for information brokerage may use brain systems implicated in considering the thoughts, perspectives, and mental states of others (i.e. 'mentalizing') more when spreading ideas...
January 18, 2017: Social Cognitive and Affective Neuroscience
https://www.readbyqxmd.com/read/28100748/independent-neural-computation-of-value-from-other-people-s-confidence
#7
Daniel Campbell-Meiklejohn, Arndis Simonsen, Chris D Frith, Nathaniel D Daw
: Expectation of reward can be shaped by the observation of actions and expressions of other people in one's environment. A person's apparent confidence in the likely reward of an action, for instance, makes qualities of their evidence, not observed directly, socially accessible. This strategy is computationally distinguished from associative learning methods that rely on direct observation, by its use of inference from indirect evidence. In twenty-three healthy human subjects, we isolated effects of first-hand experience, other people's choices, and the mediating effect of their confidence, on decision-making and neural correlates of value within ventromedial prefrontal cortex (vmPFC)...
January 18, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28100668/correction-to-nmj-morph-reveals-principal-components-of-synaptic-morphology-influencing-structure-function-relationships-at-the-neuromuscular-junction
#8
Ross A Jones, Caitlan D Reich, Kosala N Dissanayake, Fanney Kristmundsdottir, Gordon S Findlater, Richard R Ribchester, Martin W Simmen, Thomas H Gillingwater
No abstract text is available yet for this article.
January 2017: Open Biology
https://www.readbyqxmd.com/read/28100586/axon-termination-pruning-and-synaptogenesis-in-the-giant-fiber-system-of-drosophila-melanogaster-is-promoted-by-highwire
#9
Melissa Borgen, Kimberly Rowland, Jana Boerner, Brandon Lloyd, Aruna Khan, Rod Murphey
The ubiquitin ligase Highwire has a conserved role in synapse formation. Here we show that Highwire coordinates several facets of central synapse formation in the Drosophila melanogaster giant fiber system, including axon termination, axon pruning, and synaptic function. Despite the similarities to the fly neuromuscular junction, the role of Highwire and the underlying signaling pathways are distinct in the fly's giant fiber system. During development, branching of the giant fiber presynaptic terminal occurs and, normally, the transient branches are pruned away...
January 18, 2017: Genetics
https://www.readbyqxmd.com/read/28100525/transoesophageal-echocardiographic-evaluation-of-central-venous-catheter-positioning-using-peres-formula-or-a-radiological-landmark-based-approach-a-prospective-randomized-single-centre-study
#10
J H Ahn, I S Kim, J H Yang, I G Lee, D H Seo, S P Kim
BACKGROUND: The lower superior vena cava (SVC), near its junction with the right atrium (RA), is considered the ideal location for the central venous catheter tip to ensure proper function and prevent injuries. We determined catheter insertion depth with a new formula using the sternoclavicular joint and the carina as radiological landmarks, with a 1.5 cm safety margin. The accuracy of tip positioning with the radiological landmark-based technique (R) and Peres' formula (P) was compared using transoesophageal echocardiography...
February 2017: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/28100494/quantification-of-bk-virus-standards-by-quantitative-real-time-pcr-and-droplet-digital-pcr-is-confounded-by-multiple-virus-populations-in-the-who-bkv-international-standard
#11
Allen C Bateman, Alexander L Greninger, Ederlyn E Atienza, Ajit P Limaye, Keith R Jerome, Linda Cook
BACKGROUND: The WHO recently released a BK virus (BKV) international standard. This study evaluated the WHO international standard and commercially available BKV standards by quantitative real-time PCR (qPCR) and droplet digital PCR (ddPCR). METHODS: WHO, Exact Diagnostics, Acrometrix, and Zeptometrix BKV standards were tested by qPCR and ddPCR. Two preparations of NIST BKV clones were also tested. Nucleic acid was extracted with the Roche MP96 and MPLC, followed by quantification in duplicate...
January 18, 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/28100454/gene-therapy-targeting-oligodendrocytes-provides-therapeutic-benefit-in-a-leukodystrophy-model
#12
Elena Georgiou, Kyriaki Sidiropoulou, Jan Richter, Christos Papaneophytou, Irene Sargiannidou, Alexia Kagiava, Georg von Jonquieres, Christina Christodoulou, Matthias Klugmann, Kleopas A Kleopa
Pelizaeus-Merzbacher-like disease or hypomyelinating leukodystrophy-2 is an autosomal recessively inherited leukodystrophy with childhood onset resulting from mutations in the gene encoding the gap junction protein connexin 47 (Cx47, encoded by GJC2). Cx47 is expressed specifically in oligodendrocytes and is crucial for gap junctional communication throughout the central nervous system. Previous studies confirmed that a cell autonomous loss-of-function mechanism underlies hypomyelinating leukodystrophy-2 and that transgenic oligodendrocyte-specific expression of another connexin, Cx32 (GJB1), can restore gap junctions in oligodendrocytes to achieve correction of the pathology in a disease model...
January 18, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/28100248/mediastinal-lymph-node-dissection-and-distal-esophagectomy-is-not-essential-in-early-esophagogastric-junction-adenocarcinoma
#13
In-Seob Lee, Ji-Yong Ahn, Jeong-Hwan Yook, Byung-Sik Kim
BACKGROUND: Optimal extent of surgery remains controversial in types 2 and 3 adenocarcinoma of esophagogastric junction (AEG). We aimed to determine whether the extended procedure including mediastinal lymphadenectomy is essential in all patients with AEG by comparing prognosis and recurrence of proximal gastric adenocarcinoma based on total gastrectomy with intra-abdominal lymphadenectomy. METHODS: The clinicopathologic characteristics of 672 patients (type 2: 90, type 3: 211, upper third of the stomach: 371 cases) who underwent curative total gastrectomy with lymphadenectomy between 2003 and 2009 were reviewed...
January 18, 2017: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28100167/conserved-gene-expression-in-sperm-reservoirs-between-birds-and-mammals-in-response-to-mating
#14
Mohammad Atikuzzaman, Manuel Alvarez-Rodriguez, Alejandro Vicente Carrillo, Martin Johnsson, Dominic Wright, Heriberto Rodriguez-Martinez
BACKGROUND: Spermatozoa are stored in the oviductal functional sperm reservoir in animals with internal fertilization, including zoologically distant classes such as pigs or poultry. They are held fertile in the reservoir for times ranging from a couple of days (in pigs), to several weeks (in chickens), before they are gradually released to fertilize the newly ovulated eggs. It is currently unknown whether females from these species share conserved mechanisms to tolerate such a lengthy presence of immunologically-foreign spermatozoa...
January 18, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28100060/boerhaave-s-syndrome-diagnostic-gastroscopy
#15
Rocío Ferreiro-Iglesias, Manuel Narciso Blanco Freire, Manuel Paz Novo, J Enrique Domínguez Muñoz
A 47-year-old man was attended at the emergency room for severe chest pain after eating sausage with subsequent vomiting and mild upper gastrointestinal bleeding. In the chest radiography we could not see abnormalities. He referred previous episodes of choking without consulting. The urgent gastroscopy detected tertiary contractile activity (nutcracker esophagus) and a foreign body in the lower third of the esophagus. After removing the food bolus, we observed a 4 cm longitudinal tear compatible with esophageal rupture or Boerhaave's syndrome in the right posterior wall of the lower esophagus, proximal to the gastroesophageal junction...
January 2017: Revista Española de Enfermedades Digestivas
https://www.readbyqxmd.com/read/28100036/hpv45-positive-condyloma-acuminata-of-the-bladder-in-a-renal-transplant-recipient
#16
Mehmet Sarier, Esin Özel, İbrahim Duman, Yücel Yüksel, Alper Demirbaş
Condyloma acuminata (CA) are warty lesions caused by human papilloma virus (HPV) that generally affect the external genitalia and mucocutaneous junctions. Involvement of the urinary tract is rare, and involvement of the urinary bladder is thought to be due to immunosuppression. A 30-year-old woman was diagnosed with urethral CA 12 months after renal transplantation. She underwent transurethral resection (TUR) of the urethral lesions. During the operation, multiple sessile warty lesions were found incidentally inside the bladder and were also removed by TUR...
January 18, 2017: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/28099474/dna-double-strand-breaks-induce-the-nuclear-actin-filaments-formation-in-cumulus-enclosed-oocytes-but-not-in-denuded-oocytes
#17
Ming-Hong Sun, Mo Yang, Feng-Yun Xie, Wei Wang, Lili Zhang, Wei Shen, Shen Yin, Jun-Yu Ma
As a gamete, oocyte needs to maintain its genomic integrity and passes this haploid genome to the next generation. However, fully-grown mouse oocyte cannot respond to DNA double-strand breaks (DSBs) effectively and it is also unable to repair them before the meiosis resumption. To compensate for this disadvantage and control the DNA repair events, oocyte needs the cooperation with its surrounding cumulus cells. Recently, evidences have shown that nuclear actin filament formation plays roles in cellular DNA DSB repair...
2017: PloS One
https://www.readbyqxmd.com/read/28099242/acquired-bronchoesophageal-fistula-and-gastroesophageal-junction-mass
#18
Kenneth N Hiller, Paul G Loubser, Harold S Minkowitz, Mark T Goldstein
No abstract text is available yet for this article.
January 18, 2017: Anesthesiology
https://www.readbyqxmd.com/read/28099117/casz1-loss-of-function-mutation-contributes-to-familial-dilated-cardiomyopathy
#19
Xing-Biao Qiu, Xin-Kai Qu, Ruo-Gu Li, Hua Liu, Ying-Jia Xu, Min Zhang, Hong-Yu Shi, Xu-Min Hou, Xu Liu, Fang Yuan, Yu-Min Sun, Jun Wang, Ri-Tai Huang, Song Xue, Yi-Qing Yang
BACKGROUND: The zinc finger transcription factor CASZ1 plays a key role in cardiac development and postnatal adaptation, and in mice, deletion of the CASZ1 gene leads to dilated cardiomyopathy (DCM). However, in humans whether genetically defective CASZ1 contributes to DCM remains unclear. METHODS: The coding exons and splicing junction sites of the CASZ1 gene were sequenced in 138 unrelated patients with idiopathic DCM. The available family members of the index patient harboring an identified CASZ1 mutation and 200 unrelated, ethnically matched healthy individuals used as controls were genotyped for CASZ1...
January 18, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28099014/a-magneto-structural-analysis-of-fe-iii-keggin-polyoxometalates
#20
Nuno A G Bandeira, Omid Sadeghi, Toby J Woods, Yuan-Zhu Zhang, Jürgen Schnack, Kim R Dunbar, May Nyman, Carles Bo
A computational study and magnetic susceptibility measurements of three homonuclear Fe(III) Keggin structures are herein presented: the [FeO4@Fe12F24(μ-OCH3)12]5- anion (1), the [Bi6{FeO4@Fe12O12(OH)12}(μ-O2CCCl3)12]+ cation (2) and its polymorph [Bi6{FeO4@Fe12O12(OH)10(H2O)2}(μ-O2CCF3)10]3+ (3). These results are contrasted with the exchange interactions present in the previously characterised [Fe6(OH)3Ge2W18O68(OH)6]11- and [H12As4Fe8W30O120(H2O)2]4- anions. The computational analysis shows that the most significant anti-ferromagnetic spin coupling takes place at the junction between each of the {Fe3O6(OH)3}/{Fe3F6(OCH3)3} framework motifs, a possibility that had been previously discarded in the literature on the basis of the Fe-Fe distances...
January 18, 2017: Journal of Physical Chemistry. A
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