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Mladen J Kocica, Milica M Karadzic, Dragan D Cvetkovic, Milos B Grujic, Ljiljana Soskic
BACKGROUND: Isolated, fusiform aneurysms, exclusively affecting the tubular portion of the ascending aorta, are rare. Surgical treatment aims to change their natural course, reducing individual and cumulative risks of rupture, dissection and death. Open tubular graft replacement still remains the procedure of choice, despite significant risks. In permanent pursuit for optimal, alternative surgical strategy in high-risk patients, less invasive and off-pump plicating ascending aortoplasty with modified external Dacron graft wrapping seems to be a reliable choice...
November 3, 2018: Heart, Lung & Circulation
Peter J Canfield, Iain M Blake, Zheng-Li Cai, Ian J Luck, Elmars Krausz, Rika Kobayashi, Jeffrey R Reimers, Maxwell J Crossley
Isomerism is a fundamental chemical concept, reflecting the fact that the arrangement of atoms in a molecular entity has a profound influence on its chemical and physical properties. Here we describe a previously unclassified fundamental form of conformational isomerism through four resolved stereoisomers of a transoid (BF)O(BF)-quinoxalinoporphyrin. These comprise two pairs of enantiomers that manifest structural relationships not describable within existing IUPAC nomenclature and terminology. They undergo thermal diastereomeric interconversion over a barrier of 104 ± 2 kJ mol-1 , which we term 'akamptisomerization'...
June 2018: Nature Chemistry
F M Kudaeva, M R Speechley, J E Pope
OBJECTIVE: Different viral exposures have been implicated in the etiology of rheumatoid arthritis (RA). Evidence relating to the association between putative viral exposures and the development of RA was reviewed. METHODS: A systematic literature search was conducted using MEDLINE-OVID, EMBASE-OVID, PUBMED and Cochrane library databases. Articles were included if they were case-controls, cross-sectional or cohort studies and were published in English. Case-series were included if there was a lack of other study designs...
March 21, 2018: Seminars in Arthritis and Rheumatism
Jamie Bojko, Paul D Stebbing, Alison M Dunn, Kelly S Bateman, Fraser Clark, Rose C Kerr, Sarah Stewart-Clark, Ása Johannesen, Grant D Stentiford
The green crab Carcinus maenas is an invader on the Atlantic coast of Canada and the USA. In these locations, crab populations have facilitated the development of a legal fishery in which C. maenas is caught and sold, mainly for use as bait to capture economically important crustaceans such as American lobster Homarus americanus. The paucity of knowledge on the symbionts of invasive C. maenas in Canada and their potential for transfer to lobsters poses a potential risk of unintended transmission. We carried out a histological survey for symbionts of C...
May 7, 2018: Diseases of Aquatic Organisms
Sepideh Kaviani, Dale A Schoeller, Eric Ravussin, Edward L Melanson, Sarah T Henes, Lara R Dugas, Ronald E Dechert, George Mitri, Paul F M Schoffelen, Pim Gubbels, Asa Tornberg, Stephen Garland, Marco Akkermans, Jamie A Cooper
BACKGROUND: Several indirect calorimetry (IC) instruments are commercially available, but comparative validity and reliability data are lacking. Existing data are limited by inconsistencies in protocols, subject characteristics, or single-instrument validation comparisons. The aim of this study was to compare accuracy and reliability of metabolic carts using methanol combustion as the cross-laboratory criterion. METHODS: Eight 20-minute methanol burn trials were completed on 12 metabolic carts...
April 2018: Nutrition in Clinical Practice
Wenxiu Wang, Abdelrahman Said, Baoqin Wang, Guanggang Qu, Qingqing Xu, Bo Liu, Zhiqiang Shen
In this study, we report the establishment and characterization of a new epithelial cell line, goose embryonated epithelial cell line (GEE), derived from embryonic goose tissue. The purified GEE cell line can efficiently grow over 65 passages in the M199 medium supplemented with 10% fetal bovine serum at 37°C. Immunofluorescence assay was used to identify purified GEE cells as epithelial cell line by detecting expression of the Keratin-18 and -19. Further characterizations demonstrated that the GEE cell line can be continuously subcultured with (i) a high capacity to replicate for over 65 passages, (ii) a spontaneous epithelial-like morphology, (iii) constant chromosomal features and (iv) without an evidence of converting to tumorigenic cells either in vitro or in vivo study...
2018: PloS One
Peng Lü, Ye Pan, Yanhua Yang, Feifei Zhu, Chengjun Li, Zhongjian Guo, Qin Yao, Keping Chen
The silkworm Bombyx mori (B. mori), a lepidopteran model organism, has become an important model for molecular biology researches with its genome completely sequenced. Silkworms confront different types of virus diseases, mainly including those caused by Bombyx mori nucleopolyhedrovirus (BmNPV), Bombyx mori densovirus type 1 (BmDNV-1), Bombyx mori bidesovirus (BmBDV) which was termed as Bombyx mori densovirus type 2 (BmDNV-2) or Bombyx mori parvo-like virus (BmPLV) before in sericulture. B. mori offers excellent models to study the molecular mechanisms of insect innate immune responses to viruses...
May 2018: Journal of Invertebrate Pathology
Guy Ungerechts, Christine E Engeland, Christian J Buchholz, Jürgen Eberle, Henry Fechner, Karsten Geletneky, Per Sonne Holm, Florian Kreppel, Florian Kühnel, Karl Sebastian Lang, Mathias F Leber, Antonio Marchini, Markus Moehler, Michael D Mühlebach, Jean Rommelaere, Christoph Springfeld, Ulrich M Lauer, Dirk M Nettelbeck
Virotherapy is a unique modality for the treatment of cancer with oncolytic viruses (OVs) that selectively infect and lyse tumor cells, spread within tumors, and activate anti-tumor immunity. Various viruses are being developed as OVs preclinically and clinically, several of them engineered to encode therapeutic proteins for tumor-targeted gene therapy. Scientists and clinicians in German academia have made significant contributions to OV research and development, which are highlighted in this review paper...
October 2017: Human Gene Therapy
M V Zueva, I V Tsapenko, E P Lantukh, N M Maglakelidze
The review discusses literature data on the clinical relevance of functional assessment of magno- (M), parvo- (P), and koniocellular (K) pathways. It also covers the differential contribution of the M, P, and K channels to visual impairments and how it determines the prognosis, early diagnosis, and treatment choice in patients with neurodegenerative diseases of the retina and brain. Selective changes in the performance of the visual channels are investigated by the example of glaucoma and optic neuritis in multiple sclerosis (MS) patients...
2017: Vestnik Oftalmologii
Dan Cristian Voinescu, Aurel George Mohan, Andrei Alexandru Marinescu, Alexandru Vlad Ciurea
The authors begin from the Latin expression Multum in parvo, which is used to summarize the essential aspects of something. This phrase is used in this case to define the Glasgow Coma Scale (GCS) - the posttraumatic conscious state evaluation scale. The authors gather the entire information regarding the creation of a uniform evaluation scale for the patients that have the state of consciousness altered or are even in a posttraumatic coma. This subject has been thoroughly debated for over 40 years. Teasdale & Jennett represented a huge step in the evaluation of patient's state of consciousness...
2017: Romanian Journal of Morphology and Embryology
A Jacobs, F Harks, M Hoeijmakers, R Segers
BACKGROUND: In the present study the efficacy and cross protection of a novel ready-to-use combination vaccine, Porcilis® Ery + Parvo + Lepto, against swine leptospirosis, was investigated. The octavalent vaccine contains inactivated antigens of Erysipelothrix rhusiopathiae, Parvovirus and 6 Leptospira interrogans sensu lato strains of serogroups Canicola, Icterohaemorrhagiae, Grippotyphosa, Australis (Bratislava), Pomona and Tarassovi. In this study ninety pigs were vaccinated twice with Porcilis® Ery + Parvo + Lepto at six and ten weeks of age and ninety age and source-matched animals served as unvaccinated control...
2015: Porcine Health Management
Kevin K Rooney, Robert J Condia, Lester C Loschky
Neuroscience has well established that human vision divides into the central and peripheral fields of view. Central vision extends from the point of gaze (where we are looking) out to about 5° of visual angle (the width of one's fist at arm's length), while peripheral vision is the vast remainder of the visual field. These visual fields project to the parvo and magno ganglion cells, which process distinctly different types of information from the world around us and project that information to the ventral and dorsal visual streams, respectively...
2017: Frontiers in Psychology
M V Zueva, I V Tsapenko, E P Lantukh, N M Maglakelidze
In this paper, technical details of visual evoked potentials (VEP) assessment and pattern electroretinography (PERG) are reviewed. Both methods are used to perform an objective functional examination of visual channels and to clarify the level, at which they have been damaged. Contributions of parvo- (P), magno- (M) and koniocellular (K) systems to the morphology of PERG and VEP responses are discussed with account to test conditions, selectively supportive of the activity of particular cell populations. The review analyzes the physiological role of such stimulation parameters as brightness and color contrast of the pattern elements as well as spatial and temporal frequency in detecting dysfunction of color channels and mistuning of the P- and M- pathways...
2017: Vestnik Oftalmologii
Cord Huchzermeyer, Jan Kremers
We established a protocol using a well-established LED stimulator to measure temporal contrast sensitivities driven by sine-wave modulation of L- and M-cones in the perifovea using triple silent substitution. The stimulus was presented in an annular field (2° inner diameter, 13° outer diameter). We validated this technique by studying the contrast sensitivity of three color normal observers at 10 different temporal frequencies (between 1 and 28 Hz) over a large range of retinal illuminances (between 0.07 and 587 phot Td), spanning the complete mesopic range...
October 1, 2016: Journal of the Optical Society of America. A, Optics, Image Science, and Vision
Jamie Ward, Nicolas Rothen, Acer Chang, Ryota Kanai
This study considers how inter-individual differences in visual ability are structured. Visual ability could be a single entity (along the lines of general intelligence, or 'g'), or could be structured according to major anatomical or physiological pathways (dorsal v. ventral streams; magno- v. parvo-cellular systems); or may be a finer-grained mosaic of abilities. To test this, we employed seven visual psychophysical tests (generating 16 measures) on a large (100+) sample of neurotypical participants. A Varimax-rotated PCA (Principal Component Analysis) revealed a two-factor solution that broadly corresponds to a high and low spatial frequency division (consistent with a magno/parvo distinction)...
December 2017: Vision Research
Viktória Kormos, László Gáspár, László Á Kovács, József Farkas, Tamás Gaszner, Valér Csernus, András Balogh, Hitoshi Hashimoto, Dóra Reglődi, Zsuzsanna Helyes, Balázs Gaszner
Pituitary adenylate cyclase-activating polypeptide (PACAP) has been implicated in stress adaptation with potential relevance in mood disorder management. PACAP deficient (KO) mice on CD1 background were shown to have depression-like phenotype. Here we aimed at investigating effects of chronic variable mild stress (CVMS) in non-injected, vehicle and imipramine-treated KO mice vs. wildtype (WT) counterparts. We hypothesized reduced FosB neuronal activity in stress-related centers, altered activity and peptide/neurotransmitter content of corticotropin-releasing factor (CRF) cells of the oval (ovBST) bed nucleus of stria terminalis (BST), urocortin 1 (Ucn1) neurons of centrally projecting Edinger-Westphal nucleus (cpEW) and serotonin (5HT) cells of dorsal raphe (DR) in PACAP deficiency...
August 25, 2016: Neuroscience
Daniel Powell, Wayne Knibb, Nguyen Hong Nguyen, Abigail Elizur
Viral pathogens are of serious concern to the culture of penaeid shrimps worldwide. However, little is known about the molecular response of shrimp to viral infection. Selective breeding has been suggested as an effective long-term strategy to manage viral disease, though more information on gene function is needed to help inform breeding programs. The study of cultured banana shrimp (Fenneropenaeus merguiensis) infected with hepatopancreatic parvo-like virus (HPV) provides a unique opportunity to explore the host response to viral infection independent of challenge testing...
December 2016: Integrative and Comparative Biology
R Weems, D Johnson
Anemia is a common complication in HIV-infected patients, usually associated with medications, vitamin deficiencies, chronic disease, opportunistic infections, malignancies, or direct effects of HIV.
May 2015: Journal of the Louisiana State Medical Society: Official Organ of the Louisiana State Medical Society
Khazar Ahmadi, Hamid Reza Pouretemad, Jahangir Esfandiari, Ahmad Yoonessi, Ali Yoonessi
PURPOSE: Dyslexia is one of the most common learning disabilities affecting millions of people worldwide. Although exact causes of dyslexia are not well-known, a deficit in the magnocellular pathway may play a role. We examined possible deficiency of magnocellular, as compared to parvocellular and koniocellular pathway function by measuring luminance and color perception. METHODS: Visual stimuli consisted of a series of natural images, divided into layers of luminance, red-green and blue-yellow, which probed magnocellular, parvocellular, and koniocellular pathways, respectively...
October 2015: Journal of Ophthalmic & Vision Research
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