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https://www.readbyqxmd.com/read/28350855/diversification-of-spatiotemporal-expression-and-copy-number-variation-of-the-echinoid-hbox12-pmar1-micro1-multigene-family
#1
Vincenzo Cavalieri, Fabiana Geraci, Giovanni Spinelli
Changes occurring during evolution in the cis-regulatory landscapes of individual members of multigene families might impart diversification in their spatiotemporal expression and function. The archetypal member of the echinoid hbox12/pmar1/micro1 family is hbox12-a, a homeobox-containing gene expressed exclusively by dorsal blastomeres, where it governs the dorsal/ventral gene regulatory network during embryogenesis of the sea urchin Paracentrotus lividus. Here we describe the inventory of the hbox12/pmar1/micro1 genes in P...
2017: PloS One
https://www.readbyqxmd.com/read/28350450/evolution-of-the-spin-magnetic-moments-and-atomic-valence-of-vanadium-in-vcux-vagx-and-vaux-clusters-x-3-14
#2
William H Blades, Arthur C Reber, Shiv N Khanna, Luis Lopez-Sosa, Patrizia Calaminici, Andreas M Koster
The atomic structures, bonding characteristics, spin magnetic moments, and stability of VCux(+), VAgx(+), and VAux(+) (x = 3 - 14) clusters have been examined using density functional theory. Our studies indicate that the effective valence of vanadium is size-dependent and at small sizes some of the valence electrons of vanadium are localized on vanadium while at larger sizes the 3d orbitals of the vanadium participate in metallic bonding eventually quenching the spin magnetic moment. The electronic stability of the clusters may be understood through a split-shell model that partitions the valence electrons in either a delocalized shell or localized on the vanadium atom...
March 28, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28345630/identification-and-comparative-analysis-of-the-epidermal-differentiation-complex-in-snakes
#3
Karin Brigit Holthaus, Veronika Mlitz, Bettina Strasser, Erwin Tschachler, Lorenzo Alibardi, Leopold Eckhart
The epidermis of snakes efficiently protects against dehydration and mechanical stress. However, only few proteins of the epidermal barrier to the environment have so far been identified in snakes. Here, we determined the organization of the Epidermal Differentiation Complex (EDC), a cluster of genes encoding protein constituents of cornified epidermal structures, in snakes and compared it to the EDCs of other squamates and non-squamate reptiles. The EDC of snakes displays shared synteny with that of the green anole lizard, including the presence of a cluster of corneous beta-protein (CBP)/beta-keratin genes...
March 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28345565/upgradation-and-modernization-of-eye-banking-services-integrating-tradition-with-innovative-policies-and-current-best-practices
#4
Radhika Tandon, Archita Singh, Noopur Gupta, M Vanathi, Vivek Gupta
PURPOSE: The purpose of this study is to review the history and evolution of the National Eye Bank (NEB) and analyze the impact over the years and report the outcome of the invested resources. METHODS: Review of archival material, records, project reports, policy and procedures' manuals, and publications was done. Descriptive and analytical processing of data obtained was undertaken. Parameters evaluated included total collection, transplantation, utilization rates of donor cornea, changing trends over time in terms of numbers and duration of recipients waiting, impactful research translated into changes in standard operating protocols, new facilities, and subsequent effects on numbers or quality assurance measures and overview of major achievements...
February 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/28345481/cost-effectiveness-analysis-of-implementing-an-antimicrobial-stewardship-programme-in-critical-care-units
#5
Jesus Ruiz-Ramos, Juan Frasquet, Eva Romá, Jose Luis Poveda-Andres, Miguel Salavert-Leti, Alvaro Catellanos, Paula Ramirez
AIMS: To evaluate the cost-effectiveness of antimicrobial stewardship (AS) programme implementation focused on critical care units based on assumptions for the Spanish setting. MATERIAL AND METHODS: A decision model comparing costs and outcomes of sepsis, community-acquired pneumonia, and nosocomial infections (including catheter-related bacteremia, urinary tract infection, and ventilator-associated pneumonia) in critical care units with or without an AS was designed...
March 26, 2017: Journal of Medical Economics
https://www.readbyqxmd.com/read/28345194/decay-of-the-glycolytic-pathway-and-adaptation-to-intranuclear-parasitism-within-enterocytozoonidae-microsporidia
#6
Dominic Wiredu Boakye, Pattana Jaroenlak, Anuphap Prachumwat, Tom A Williams, Kelly S Bateman, Ornchuma Itsathitphaisarn, Kallaya Sritunyalucksana, Konrad H Paszkiewicz, Karen A Moore, Grant D Stentiford, Bryony A P Williams
Glycolysis and oxidative phosphorylation are the fundamental pathways of ATP generation in eukaryotes. Yet in microsporidia, endoparasitic fungi living at the limits of cellular streamlining, oxidative phosphorylation has been lost: energy is obtained directly from the host or, during the dispersive spore stage, via glycolysis. It was therefore surprising when the first genome from the Enterocytozoonidae - a major family of human and animal-infecting microsporidians - appeared to have lost glycolysis. Here we sequence and analyse genomes from four additional members of this family, shedding new light on their unusual biology...
March 26, 2017: Environmental Microbiology
https://www.readbyqxmd.com/read/28344905/evolution-of-the-patellar-sesamoid-bone-in-mammals
#7
Mark E Samuels, Sophie Regnault, John R Hutchinson
The patella is a sesamoid bone located in the major extensor tendon of the knee joint, in the hindlimb of many tetrapods. Although numerous aspects of knee morphology are ancient and conserved among most tetrapods, the evolutionary occurrence of an ossified patella is highly variable. Among extant (crown clade) groups it is found in most birds, most lizards, the monotreme mammals and almost all placental mammals, but it is absent in most marsupial mammals as well as many reptiles. Here, we integrate data from the literature and first-hand studies of fossil and recent skeletal remains to reconstruct the evolution of the mammalian patella...
2017: PeerJ
https://www.readbyqxmd.com/read/28344378/the-long-and-the-short-of-it-a-global-analysis-of-hawkmoth-pollination-niches-and-interaction-networks
#8
Steven D Johnson, Marcela Moré, Felipe W Amorim, William A Haber, Gordon W Frankie, Dara A Stanley, Andrea A Coccuci, Robert A Raguso
1. Proboscis length has been proposed as a key dimension of plant pollination niches, but this niche space has not previously been explored at regional and global scales for any pollination system. Hawkmoths are ideal organisms for exploring pollinator niches as they are important pollinators in most of the biodiverse regions of the earth and vary greatly in proboscis length, with some species having the longest proboscides of all insects. 2. Using datasets for nine biogeographical regions spanning the Old and New World, we ask whether it is possible to identify distinct hawkmoth pollination niches based on the frequency distribution of proboscis length, and whether these niches are reflected in the depths of flowers that are pollinated by hawkmoths...
January 2017: Functional Ecology
https://www.readbyqxmd.com/read/28344109/phylogenomic-proximity-and-metabolic-discrepancy-of-methanosarcina-mazei-go1-across-methanosarcinal-genomes
#9
M Bharathi, P Chellapandi
Methanosarcina mazei Go1 is a heterotrophic methanogenic archaean contributing a significant role in global methane cycling and biomethanation process. Phylogenomic relatedness and metabolic discrepancy of this genome were described herein by comparing its whole genome sequence, intergenomic distance, genome function, synteny homologs and origin of replication, and marker genes with very closely related genomes, Methanosarcina acetivorans and Methanosarcina barkeri. Phylogenomic analysis of this study revealed that genome functional feature and metabolic core of M...
March 23, 2017: Bio Systems
https://www.readbyqxmd.com/read/28344097/whence-river-blindness-the-domestication-of-mammals-and-host-parasite-co-evolution-in-the-nematode-genus-onchocerca
#10
Emilie Lefoulon, Alessio Giannelli, Benjamin L Makepeace, Yasen Mutafchiev, Simon Townson, Shigehiko Uni, Guilherme G Verocai, Domenico Otranto, Coralie Martin
The genus Onchocerca includes 34 described species and represents one of the largest genera of the filarial nematodes within the family Onchocercidae. Representative members of this genus are mainly parasites of ungulates, with some exceptions such as Onchocerca lupi and Onchocerca volvulus, infecting carnivores and/or humans. For a long time, the evolutionary relationships amongst onchocercids remained poorly studied, as the systematics of this genus was impaired by the high morphological variability of species included in the taxon...
March 23, 2017: International Journal for Parasitology
https://www.readbyqxmd.com/read/28343248/uncovering-specific-changes-in-network-wiring-underlying-the-primate-cerebrotype
#11
Salah Hamodeh, Ayse Bozkurt, Haian Mao, Fahad Sultan
Regular scaling of brain networks during evolution has been proposed to be the major process leading to enlarged brains. Alternative views, however, suggest that deviations from regular scaling were crucial to the evolution of the primate brain and the emergence of different cerebrotypes. Here, we examined the scaling within the major link between the cerebellum and the cerebral cortex by studying the deep cerebellar nuclei (DCN). We compared the major axonal and dendritic wiring in the DCN of rodents and monkeys in search of regular scaling...
March 25, 2017: Brain Structure & Function
https://www.readbyqxmd.com/read/28342818/intraneural-microcystic-lymphatic-malformation-of-the-ulnar-nerve-at-the-guyon-canal-unusual-cause-of-ulnar-pain-in-a-child
#12
I González Pérez, F Corella Montoya, I Casado Fariñas
We present a case of an unusual cause of ulnar pain on a 9 years old patient. The patient had pain on the ulnar side of the wrist after a fall. MRI showed a poorly defined lesion on the ulnar nerve at Guyońs canal. The initial diagnosis was traumatic neuropathy. Following conservative treatment of symptoms for one year, the pain started again. Therefore, a new MRI was performed were progression of the lesion was observed. Excision of the lesion was performed and the specimen sent for pathologic analysis. The diagnosis was of microcystic lymphatic malformation...
March 22, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28341915/in-vivo-system-for-analyzing-the-function-of-the-psbp-protein-using-chlamydomonas-reinhardtii
#13
Taishi Nishimura, Fumihiko Sato, Kentaro Ifuku
The PsbP protein is an extrinsic subunit of photosystem II (PSII) specifically developed in green-plant species including land plants and green algae. The protein-protein interactions involving PsbP and its effect on oxygen evolution have been investigated in vitro using isolated PSII membranes. However, the importance of those interactions needs to be examined at the cellular level. To this end, we developed a system expressing exogenous PsbP in the background of the Chlamydomonas BF25 mutant lacking native PsbP...
March 24, 2017: Photosynthesis Research
https://www.readbyqxmd.com/read/28341900/tumor-induced-osteomalacia-experience-from-a-south-american-academic-center
#14
G González, R Baudrand, M F Sepúlveda, N Vucetich, F J Guarda, P Villanueva, O Contreras, A Villa, F Salech, L Toro, L Michea, P Florenzano
The majority of tumor-induced osteomalacia cases have been reported in the Northern Hemisphere and Asia. In this first series of South American patients, we show that the clinical presentation and sensitivity of plasmatic fibroblast growth factor 23 and somatostatin analog-based imaging are similar to those described in other populations. INTRODUCTION: Describe the experience of clinical presentation, diagnostic study, and treatment of patients with tumor-induced osteomalacia (TIO) in a South American academic center in comparison to literature...
March 25, 2017: Osteoporosis International
https://www.readbyqxmd.com/read/28341884/mitochondrial-genome-of-the-nematode-endoparasitic-fungus-hirsutella-vermicola-reveals-a-high-level-of-synteny-in-the-family-ophiocordycipitaceae
#15
Yong-Jie Zhang, Hong-Yue Zhang, Xing-Zhong Liu, Shu Zhang
Ophiocordycipitaceae is a diverse fungal family comprising multiple ecologically, economically, medicinally, and culturally important fungal species; however, only four species of the family have available mitochondrial genomes (mitogenomes). In this study, the complete mitogenome of the nematode endoparasitic fungus Hirsutella vermicola in Ophiocordycipitaceae was sequenced, and a comparative mitogenomic analysis of Ophiocordycipitaceae was performed. We found that the 53,793-bp circular mitogenome of H. vermicola, except for standard fungal mitochondrial genes, harbors seven introns acquired possibly through lateral transfer from other fungi and three free-standing open reading frames (ORFs) coding for hypothetical proteins...
March 24, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28341677/classification-and-biochemical-characterization-of-the-meso-diaminopimelate-dehydrogenase-family-reveals-a-novel-type-with-a-broad-substrate-spectrum
#16
Xiuzhen Gao, Zheng Zhang, Ya'nan Zhang, Ying Li, Heng Zhu, Sheng Wang, Cun Li
meso-Diaminopimelate dehydrogenase (meso-DAPDH) from Symbiobacterium thermophilum (StDAPDH) is the first member of the meso-DAPDH family known to catalyze the asymmetric reductive amination of 2-keto acids to produce d-amino acids. It is important to understand the catalytic mechanisms of StDAPDH and other enzymes in this family. In this study, based on an evolutionary analysis and examination of catalytic activity, the meso-DAPDH enzymes could be divided into two types: type I showed highly preferable activity toward meso-DAP, and type II exhibited obviously reversible amination activity with a broad substrate spectrum...
March 24, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28341546/co-circulation-of-two-usutu-virus-strains-in-northern-italy-between-2009-and-2014
#17
Mattia Calzolari, Chiara Chiapponi, Paolo Bonilauri, Davide Lelli, Laura Baioni, Ilaria Barbieri, Antonio Lavazza, Stefano Pongolini, Michele Dottori, Ana Moreno
Usutu virus is an arbovirus closely related to West Nile virus (genus Flavivirus), which circulates between mosquitoes and wild birds. This virus has been increasingly reported in Europe, raising concerns for its possible pathogenic potential for wild birds and humans. This study reports the whole genome sequences of 15 strains of USUV, isolated between 2010 and 2014 from mosquitoes and wild birds in the course of West Nile virus surveillance in the Emilia-Romagna and Lombardy regions of Northern Italy. Both whole and 656 partial genome sequences, obtained from isolated viruses and field samples (mosquitoes and wild birds), were analyzed to describe the temporal and geographical spread of USUV in the surveyed area...
March 21, 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/28340524/controlled-hydrothermal-synthesis-and-photoluminescence-of-nanocrystalline-znga2o4-cr-3-monospheres
#18
Tian Luan, Jinhan Liu, Xiaoxue Yuan, Ji-Guang Li
The hydrothermal synthesis of nanocrystalline ZnGa2O4:Cr(3+) (ZGC) red phosphor monospheres was accomplished in this work, and the effects of system pH, reactant content, reaction time, and citrate anions (Cit(3-)) on the phase and morphology evolution of the product were systematically studied. Under the optimized conditions of Cit(3-)/M = 1.0 molar ratio (M = total cations), pH = 5.0, and 0.2 mmol of Zn(2+), well-dispersed ZGC monospheres with an average diameter of ~454 ± 56 nm (average crystallite size ~15 nm) were successfully obtained via hydrothermal reaction at 180 °C for 18 h...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28340335/experimental-evolution-to-study-virus-emergence
#19
Nathan D Grubaugh, Kristian G Andersen
Understanding how viruses adapt to new environments and acquire new phenotypes is critical for developing comprehensive responses to outbreaks. By studying the emergence of vaccine-derived poliovirus outbreaks, Stern et al. describe how a combination of sequence analysis and experimental evolution can be used to reveal adaptive pathways.
March 23, 2017: Cell
https://www.readbyqxmd.com/read/28339862/a-new-insight-into-the-evolution-and-functional-divergence-of-sweet-transporters-in-chinese-white-pear-pyrus-bretschneideri
#20
Jiaming Li, Mengfan Qin, Xin Qiao, Yinsheng Cheng, Xiaolong Li, Huping Zhang, Jun Wu
SWEET genes are a recently identified plant gene family that play an indispensable role in sugar efflux. However, no systematic study has been performed in pear. In this research, 18 SWEET transporters identified in pear, almost twice the number found in woodland strawberry and Japanese apricot, were divided into four clades. Conserved motifs and six exons of the SWEET transporters were found in six species. SWEET transporters contained seven transmembrane segments (TMSs) that evolved from an internal duplication of an ancestral three-TMSs unit, connected by TMS4...
March 1, 2017: Plant & Cell Physiology
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