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https://www.readbyqxmd.com/read/28501862/chromosome-painting-in-trogon-s-surrucura-aves-trogoniformes-reveals-a-karyotype-derived-by-chromosomal-fissions-fusions-and-inversions
#1
Tiago M Degrandi, Analía Del Valle Garnero, Patricia C M O'Brien, Malcolm A Ferguson-Smith, Rafael Kretschmer, Edivaldo H C de Oliveira, Ricardo J Gunski
Trogons are forest birds with a wide distribution, being found in Africa, Asia, and America, and are included in the order Trogoniformes, family Trogonidae. Phylogenetic studies using molecular data have not been able to determine the phylogenetic relationship among the different genera of trogons. So far, no cytogenetic data for these birds exist. Hence, the aim of this study was to characterize the karyotype of Trogon surrucura surrucura by means of classical and molecular cytogenetics. We found a diploid chromosome number of 2n = 82, similar to most birds, with several derived features compared to chicken and the putative ancestral avian karyotype...
May 13, 2017: Cytogenetic and Genome Research
https://www.readbyqxmd.com/read/28493602/avenacosides-metabolism-and-potential-use-as-exposure-biomarkers-of-oat-intake
#2
Pei Wang, Junli Yang, Aaron Yerke, Shengmin Sang
SCOPE: Exposure biomarkers used for objective estimation of whole-grain (WG) intake are essential for epidemiologic studies of WG consumption, however, up to now, no exposure biomarkers were developed for WG oat intake. This study investigates the potential of oat unique components, Avenacoside-B (AVE-B) and -A (AVE-A), as exposure biomarkers of oat intake. METHODS AND RESULTS: An in vivo study performed in mice and an in vitro batch fecalfermentation study were used to investigate the potential metabolic routes of AVE-B and -A...
May 11, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28484446/an-alternative-%C3%AF-factor-%C3%AF-8-controls-avermectin-production-and-multiple-stress-responses-in-streptomyces-avermitilis
#3
Di Sun, Qian Wang, Zhi Chen, Jilun Li, Ying Wen
Alternative σ factors in bacteria redirect RNA polymerase to recognize alternative promoters, thereby facilitating coordinated gene expression necessary for adaptive responses. The gene sig8 (sav_741) in Streptomyces avermitilis encodes an alternative σ factor, σ(8), highly homologous to σ(B) in Streptomyces coelicolor. Studies reported here demonstrate that σ(8) is an important regulator of both avermectin production and stress responses in S. avermitilis. σ(8) inhibited avermectin production by indirectly repressing expression of cluster-situated activator gene aveR, and by directly initiating transcription of its downstream gene sav_742, which encodes a direct repressor of ave structural genes...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28469029/how-do-seemingly-non-vagile-clades-accomplish-trans-marine-dispersal-trait-and-dispersal-evolution-in-the-landfowl-aves-galliformes
#4
Peter A Hosner, Joseph A Tobias, Edward L Braun, Rebecca T Kimball
Dispersal ability is a key factor in determining insular distributions and island community composition, yet non-vagile terrestrial organisms widely occur on oceanic islands. The landfowl (pheasants, partridges, grouse, turkeys, quails and relatives) are generally poor dispersers, but the Old World quail (Coturnix) are a notable exception. These birds evolved small body sizes and high-aspect-ratio wing shapes, and hence are capable of trans-continental migrations and trans-oceanic colonization. Two monotypic partridge genera, Margaroperdix of Madagascar and Anurophasis of alpine New Guinea, may represent additional examples of trans-marine dispersal in landfowl, but their body size and wing shape are typical of poorly dispersive continental species...
May 17, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28450827/understanding-the-influences-of-eeg-reference-a-large-scale-brain-network-perspective
#5
Xu Lei, Keren Liao
The influence of reference is a critical issue for the electroencephalography (EEG) and event-related potentials (ERPs) studies. However, previous investigations concentrated less on the location of source at a systematic neuroscience level. Our goal was to examine the EEG signal associated with the locations from a common network parcellation of the human brain function, offering a system perspective of the influence of EEG reference. In our simulation, vertices uniformly distributed in eight large-scale brain networks were adopted to generate the scalp EEG...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28448364/deep-tissue-pressure-injury-a-clinical-review
#6
Ave Preston, Aditi Rao, Robyn Strauss, Rebecca Stamm, Demetra Zalman
: A deep tissue pressure injury (DTPI) is a serious type of pressure injury that begins in the muscle closest to the bone and may not be visible in its early stages. Its hallmark is rapid deterioration despite the use of appropriate preventive interventions. In 2007, the National Pressure Ulcer Advisory Panel added suspected deep tissue injuries to the traditional classification system, and by 2010 DTPIs had accounted for about 9% of all pressure injuries and were for the first time more prevalent than stage 3 or 4 pressure injuries...
May 2017: American Journal of Nursing
https://www.readbyqxmd.com/read/28410354/effects-of-tear-film-lipid-layer-thickness-and-blinking-pattern-on-tear-film-instability-after-corneal-refractive-surgery
#7
Qingzhong Chen, Min Li, Ying Yuan, Rao Me, Yunjie Yu, Guangsen Shi, Xin Wang, Bilian Ke
PURPOSE: To investigate associations between changes in tear film instability and the lipid layer thickness (LLT) and blink pattern after corneal refractive surgery (CRS). METHODS: Forty patients were enrolled in this study. The LLT and blink pattern were evaluated 1 week before and 30 days after CRS using a novel interferometer and an ocular surface disease index (OSDI) questionnaire, and other tear film stability markers were also evaluated. RESULTS: Mean OSDI scores increased from 5...
April 13, 2017: Cornea
https://www.readbyqxmd.com/read/28407723/dna-barcodes-and-insights-into-the-phylogenetic-relationships-of-corvidae-aves-passeriformes
#8
Zuhao Huang, Rujue Ruan
DNA barcoding has become a promising tool for species identification and phylogeny in a wide range of animal taxa using mitochondrial cytochrome c oxidase subunit I (COI). The Corvidae (Aves: Passeriformes) is a species rich and morphologically diverse family. In the present study, we analyzed the COI barcodes of 39 species from 12 genera of Corvidae. COI gene was also used to examine phylogenetic relationships of Corvidae. Every species possessed a barcode distinct from that of other species. Kimura two-parameter distances were calculated between species barcodes...
April 13, 2017: Mitochondrial DNA. Part A. DNA Mapping, Sequencing, and Analysis
https://www.readbyqxmd.com/read/28407483/age-associated-microbial-dysbiosis-promotes-intestinal-permeability-systemic-inflammation-and-macrophage-dysfunction
#9
Netusha Thevaranjan, Alicja Puchta, Christian Schulz, Avee Naidoo, J C Szamosi, Chris P Verschoor, Dessi Loukov, Louis P Schenck, Jennifer Jury, Kevin P Foley, Jonathan D Schertzer, Maggie J Larché, Donald J Davidson, Elena F Verdú, Michael G Surette, Dawn M E Bowdish
Levels of inflammatory mediators in circulation are known to increase with age, but the underlying cause of this age-associated inflammation is debated. We find that, when maintained under germ-free conditions, mice do not display an age-related increase in circulating pro-inflammatory cytokine levels. A higher proportion of germ-free mice live to 600 days than their conventional counterparts, and macrophages derived from aged germ-free mice maintain anti-microbial activity. Co-housing germ-free mice with old, but not young, conventionally raised mice increases pro-inflammatory cytokines in the blood...
April 12, 2017: Cell Host & Microbe
https://www.readbyqxmd.com/read/28391389/combination-therapy-with-omega-3-fatty-acids-plus-tamsulocin-and-finasteride-in-the-treatment-of-men-with-lower-urinary-tract-symptoms-luts-and-benign-prostatic-hyperplasia-bph
#10
Alireza Ghadian, Mehran Rezaei
PURPOSE: Inflammation and Cyclooxygenase-2 (COX-2) as a part of it are common in BPH specimens and may play a role in the pathogenesis of the disease through cytokines that promote cell growth or lead to smooth muscle contraction. The aim of this study is to analyze whether combination therapy with omega-3 fatty acids, which have anti-inflammatory and COX-2 inhibitory effects, and tamsulocin plus finasteride offers an advantage compared to tamsulocin plus finasteride therapy in patients with BPH...
April 8, 2017: Inflammopharmacology
https://www.readbyqxmd.com/read/28363190/nose-to-brain-delivery-in-rats-effect-of-surface-charge-of-rhodamine-b-labeled-nanocarriers-on-brain-subregion-localization
#11
A Bonaccorso, T Musumeci, M F Serapide, R Pellitteri, I F Uchegbu, G Puglisi
Nose to brain delivery and nanotechnology are the combination of innovative strategies for molecules to reach the brain and to bypass blood brain barriers. In this work we investigated the fate of two rhodamine B labeled polymeric nanoparticles (Z-ave <250nm) of opposite surface charge in different areas of the brain after intranasal administration in rats. A preliminary screening was carried out to select the suitable positive (chitosan/poly-l-lactide-co-glycolide) nanocarrier through photon correlation spectroscopy and turbiscan...
June 1, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28347888/on-the-importance-of-geographic-and-taxonomic-sampling-in-phylogeography-a-reevaluation-of-diversification-and-species-limits-in-a-neotropical-thrush-aves-turdidae
#12
Jorge Enrique Avendaño, Enrique Arbeláez-Cortés, Carlos Daniel Cadena
Phylogeographic studies seeking to describe biogeographic patterns, infer evolutionary processes, and revise species-level classification should properly characterize the distribution ranges of study species, and thoroughly sample genetic variation across taxa and geography. This is particularly necessary for widely distributed organisms occurring in complex landscapes, such as the Neotropical region. Here, we clarify the geographic range and revisit the phylogeography of the Black-billed Thrush (Turdus ignobilis), a common passerine bird from lowland tropical South America, whose evolutionary relationships and species limits were recently evaluated employing phylogeographic analyses based on partial knowledge of its distribution and incomplete sampling of populations...
March 24, 2017: Molecular Phylogenetics and Evolution
https://www.readbyqxmd.com/read/28290270/host-associations-and-turnover-of-haemosporidian-parasites-in-manakins-aves-pipridae
#13
Alan Fecchio, Maria Svensson-Coelho, Jeffrey Bell, Vincenzo A Ellis, Matthew C Medeiros, Christopher H Trisos, John G Blake, Bette A Loiselle, Joseph A Tobias, Rebeka Fanti, Elyse D Coffey, Iubatã P DE Faria, João B Pinho, Gabriel Felix, Erika M Braga, Marina Anciães, Vasyl Tkach, John Bates, Christopher Witt, Jason D Weckstein, Robert E Ricklefs, Izeni P Farias
Parasites of the genera Plasmodium and Haemoproteus (Apicomplexa: Haemosporida) are a diverse group of pathogens that infect birds nearly worldwide. Despite their ubiquity, the ecological and evolutionary factors that shape the diversity and distribution of these protozoan parasites among avian communities and geographic regions are poorly understood. Based on a survey throughout the Neotropics of the haemosporidian parasites infecting manakins (Pipridae), a family of Passerine birds endemic to this region, we asked whether host relatedness, ecological similarity and geographic proximity structure parasite turnover between manakin species and local manakin assemblages...
March 14, 2017: Parasitology
https://www.readbyqxmd.com/read/28288969/visualizing-endoderm-cell-populations-and-their-dynamics-in-the-mouse-embryo-with-a-hex-tdtomato-reporter
#14
Tao Wu, Anna-Katerina Hadjantonakis, Sonja Nowotschin
Live imaging is the requisite tool for studying cell behaviors driving embryonic development and tissue formation. Genetically encoded reporters expressed under cell type-specific cis-regulatory elements that drive fluorescent protein expression at sufficient levels for visualization in living specimens have become indispensable for these studies. Increasingly dual-color (red-green) imaging is used for studying the coordinate behaviors of two cell populations of interest, identifying and characterizing subsets within broader cell populations or subcellular features...
May 15, 2017: Biology Open
https://www.readbyqxmd.com/read/28286101/the-biogeographic-and-evolutionary-history-of-an-endemic-clade-of-middle-american-sparrows-melozone-and-aimophila-aves-passerellidae
#15
Luis Sandoval, Kevin L Epperly, John Klicka, Daniel J Mennill
The large number of endemic species in Middle America is frequently attributed to the interplay of geographical barriers and historical climatic changes in the region. This process promotes genetic divergence between populations, and given enough time, may yield new species. Animals that inhabit mid-elevation or highland habitats may be disproportionately affected in this way. Genetic analyses of animals in this region allow us to better understand how historical patterns of isolation have influenced the generation of new species in this biodiversity hotspot...
March 7, 2017: Molecular Phylogenetics and Evolution
https://www.readbyqxmd.com/read/28283710/clinical-and-urodynamic-assessment-in-patients-with-pelvic-organ-prolapse-before-and-after-laparoscopic-sacrocolpopexy
#16
Bahiyah Abdullah, Jimmy Nomura, Shingo Moriyama, Tingwen Huang, Shino Tokiwa, Mio Togo
INTRODUCTION AND HYPOTHESIS: We hypothesized that patient-reported urinary symptoms and urodynamic evaluation improve after laparoscopic sacrocolpopexy (LSC) despite deeper vesicovaginal space dissection. METHODS: This was a retrospective study of women with pelvic organ prolapse who underwent LSC from January 2013 to January 2016 in a tertiary center. Urinary function was clinically evaluated using the International Consultation on Incontinence Questionnaire - Short Form (ICIQ-SF), the Overactive Bladder Symptom Score (OABSS) and the Pelvic Floor Distress Inventory Questionnaire- - Short Form 20 (PFDI-20)...
March 10, 2017: International Urogynecology Journal
https://www.readbyqxmd.com/read/28260998/article-watch-april-2017
#17
Clive A Slaughter
This column highlights recently published articles that are of interest to the readership of this publication. We encourage ABRF members to forward information on articles they feel are important and useful to Clive Slaughter, MCG-UGA Medical Partnership, 1425 Prince Ave., Athens, GA 30606, USA. Tel: (706) 713-2216; Fax: (706) 713-2221; E-mail: cslaught@uga.edu, or to any member of the editorial board. Article summaries reflect the reviewer's opinions and not necessarily those of the association.
February 22, 2017: Journal of Biomolecular Techniques: JBT
https://www.readbyqxmd.com/read/28260532/the-role-of-chewing-lice-phthiraptera-philopteridae-as-intermediate-hosts-in-the-transmission-of-hymenolepis-microps-cestoda-cyclophyllidea-from-the-willow-ptarmigan-lagopus-lagopus-aves-tetraonidae
#18
D Pistone, M Lindgren, P Holmstad, N K Ellingsen, H Kongshaug, F Nilsen, A Skorping
The cestode Hymenolepis microps is an intestinal parasite of tetraonid birds, including the willow ptarmigan (Lagopus lagopus). This parasite is able to maintain a high prevalence and intensity throughout the year, even in a subarctic environment in bird populations with relatively low host densities, indicating effective transmission routes. Willow ptarmigan consume mainly vegetal material and active consumption of invertebrates is confined to the first two or three weeks of life. Ptarmigan are infected by different species of ectoparasites, of which two species of feather lice, Lagopoecus affinis and Goniodes lagopi, are the most abundant...
March 6, 2017: Journal of Helminthology
https://www.readbyqxmd.com/read/28259133/aging-in-birds
#19
REVIEW
D Y Travin, B A Feniouk
Rodents are the most commonly used model organisms in studies of aging in vertebrates. However, there are species that may suit this role much better. Most birds (Aves), having higher rate of metabolism, live two-to-three times longer than mammals of the same size. This mini-review briefly covers several evolutionary, ecological, and physiological aspects that may contribute to the phenomenon of birds' longevity. The role of different molecular mechanisms known to take part in the process of aging according to various existing theories, e...
December 2016: Biochemistry. Biokhimii︠a︡
https://www.readbyqxmd.com/read/28249741/phylogeny-and-biogeography-of-the-imperial-pigeons-aves-columbidae-in-the-pacific-ocean
#20
Alice Cibois, Jean-Claude Thibault, Céline Bonillo, Christopher E Filardi, Eric Pasquet
We reconstruct the phylogeny of imperial pigeons (genus Ducula) using mitochondrial and nuclear sequence data. We evaluate the most likely biogeographic scenario for the evolution of this group that colonized many islands of the Pacific Ocean. The divergence time analysis suggests that the basal divergences within Ducula occurred more recently than in the fruit doves (genus Ptilinopus), a group that is also well diversified in Oceania. The imperial pigeons colonized the Melanesian region several times independently, and the diversification within this region led to several species in sympatry, in particular in the Bismarck archipelago...
February 27, 2017: Molecular Phylogenetics and Evolution
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