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https://www.readbyqxmd.com/read/28930520/molecular-evolution-of-hemagglutinin-gene-of-influenza-a-virus
#1
Antara De
In the history of human civilization, influenza is the second most catastrophic killer disease for mankind with plague ranking first in the medieval times. The 1918-1919 'Spanish flu' killed 20-50 million people worldwide. According to a report from WHO, there have been four pandemics, several epidemics and recurrent seasonal outbreaks of influenza in different parts of the world. The virus is a potential bioterrorism threat with biological 'Chernobyl-like disaster' that occurred in Soviet Russia in 1977. Here, the author reviews the biology of the surface exposed hemagglutinin of the influenza virus, a gene under constant positive selection pressure to evade host immunity and vaccination...
January 1, 2018: Frontiers in Bioscience (Scholar Edition)
https://www.readbyqxmd.com/read/28930498/molecular-and-morphological-characterization-of-a-brazilian-lineage-of-plasmodium-novyella-unalis-in-turdus-spp-passeriformes-of-the-atlantic-forest-with-remarks-on-new-hosts-and-high-genetic-variation
#2
Raquel Tostes, Roberto Júnio Pedroso Dias, Luísa de Oliveira, Marcus Vinicius Xavier Senra, Carlos Luiz Massard, Marta D'Agosto
Plasmodium spp. are haemosporidian protozoans that alternate their live cycles between bloodsucking Culicidae dipterans and vertebrate hosts (mammals, reptiles and birds). In birds, these parasites are the causative agents of the so called avian malaria, a disease associated with considerable declines and extinctions in the avifauna in different geographical regions. In this work, we applied a multidisciplinary approach, light microscopy and cytochrome oxidase b (cyt b) gene sequence analysis for characterization of Plasmodium found in association with wild birds of the genus Turdus, collected in Atlantic forest fragments of southeastern Brazil...
September 20, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28930018/fluoroquinolone-resistant-alcaligenes-faecalis-related-to-chronic-suppurative-otitis-media-angola
#3
Matuba Filipe, Åke Reimer, Erika Matuschek, Maria Paul, Tuula Pelkonen, Kristian Riesbeck
We found that 20 (10.6%) of 188 patients with chronic suppurative otitis media in Angola were co-colonized with fluoroquinolone-resistant Alcaligenes faecalis, commonly found in birds. A likely explanation for our findings was the use of bird feces by residents as a traditional remedy to prevent ear secretions caused by primary ear infection.
October 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28929966/-a-case-with-scalp-pruritus-caused-by-dermanysus-gallinae-order-mesostigmata
#4
Mustafa Şengül, Nida Kaçar, Mehmet Karaca, Sedef Zeliha Öner, Çağrı Ergin
Dermanyssus gallinae is one of the important hematophagous ectoparasite species of poultry like chicken, pigeon and wild bird species. These ectoparasites in the form of nymphs or adults who can not find their hosts are also seen in mammals and even in humans. For this reason, they are considered as important for public health. The ectoparasite causes a clinical condition named gamasoidosis among pet owners and people who live or work close to animal shelters, barns and chicken farms. Pruritus dermatitis is also caused by D...
July 2017: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/28929384/roles-of-dietary-glycine-proline-and-hydroxyproline-in-collagen-synthesis-and-animal-growth
#5
REVIEW
Peng Li, Guoyao Wu
Glycine, proline, and hydroxyproline (Hyp) contribute to 57% of total amino acids (AAs) in collagen, which accounts for one-third of proteins in animals. As the most abundant protein in the body, collagen is essential to maintain the normal structure and strength of connective tissue, such as bones, skin, cartilage, and blood vessels. Mammals, birds, and fish can synthesize: (1) glycine from threonine, serine, choline, and Hyp; (2) proline from arginine; and (3) Hyp from proline residues in collagen, in a cell- and tissue-specific manner...
September 20, 2017: Amino Acids
https://www.readbyqxmd.com/read/28929303/the-facial-width-to-height-ratio-predicts-sex-drive-sociosexuality-and-intended-infidelity
#6
Steven Arnocky, Justin M Carré, Brian M Bird, Benjamin J P Moreau, Tracy Vaillancourt, Triana Ortiz, Nicole Marley
Previous research has linked the facial width-to-height ratio (FWHR) to a host of psychological and behavioral characteristics, primarily in men. In two studies, we examined novel links between FWHR and sex drive. In Study 1, a sample of 145 undergraduate students revealed that FWHR positively predicted sex drive. There were no significant FWHR × sex interactions, suggesting that FWHR is linked to sexuality among both men and women. Study 2 replicated and extended these findings in a sample of 314 students collected from a different Canadian city, which again demonstrated links between the FWHR and sex drive (also in both men and women), as well as sociosexuality and intended infidelity (men only)...
September 19, 2017: Archives of Sexual Behavior
https://www.readbyqxmd.com/read/28929137/bioinspired-bright-noniridescent-photonic-melanin-supraballs
#7
Ming Xiao, Ziying Hu, Zhao Wang, Yiwen Li, Alejandro Diaz Tormo, Nicolas Le Thomas, Boxiang Wang, Nathan C Gianneschi, Matthew D Shawkey, Ali Dhinojwala
Structural colors enable the creation of a spectrum of nonfading colors without pigments, potentially replacing toxic metal oxides and conjugated organic pigments. However, significant challenges remain to achieve the contrast needed for a complete gamut of colors and a scalable process for industrial application. We demonstrate a feasible solution for producing structural colors inspired by bird feathers. We have designed core-shell nanoparticles using high-refractive index (RI) (~1.74) melanin cores and low-RI (~1...
September 2017: Science Advances
https://www.readbyqxmd.com/read/28929098/the-degree-of-one-health-implementation-in-the-west-nile-virus-integrated-surveillance-in-northern-italy-2016
#8
REVIEW
Giulia Paternoster, Laura Tomassone, Marco Tamba, Mario Chiari, Antonio Lavazza, Mauro Piazzi, Anna R Favretto, Giacomo Balduzzi, Alessandra Pautasso, Barbara R Vogler
West Nile virus (WNV) is endemic in the Po valley area, Northern Italy, and within the legal framework of the national plan for the surveillance of human vector-borne diseases, WNV surveillance has over time been implemented. The surveillance plans are based on the transdisciplinary and trans-sectorial collaboration between regional institutions involved in public, animal, and environmental health. This integrated surveillance targets mosquitoes, wild birds, humans, and horses and aims at early detecting the viral circulation and reducing the risk of infection in the human populations...
2017: Frontiers in Public Health
https://www.readbyqxmd.com/read/28929046/application-of-three-dimensional-printing-for-colon-targeted-drug-delivery-systems
#9
REVIEW
Nitin B Charbe, Paul A McCarron, Majella E Lane, Murtaza M Tambuwala
Orally administered solid dosage forms currently dominate over all other dosage forms and routes of administrations. However, human gastrointestinal tract (GIT) poses a number of obstacles to delivery of the drugs to the site of interest and absorption in the GIT. Pharmaceutical scientists worldwide have been interested in colon drug delivery for several decades, not only for the delivery of the drugs for the treatment of colonic diseases such as ulcerative colitis and colon cancer but also for delivery of therapeutic proteins and peptides for systemic absorption...
April 2017: International Journal of Pharmaceutical Investigation
https://www.readbyqxmd.com/read/28929014/impacts-of-land-use-and-invasive-species-on-native-avifauna-of-mo-orea-french-polynesia
#10
Vanessa M ZoBell, Brett J Furnas
Oceanic islands are among the most endemically biodiverse ecosystems in the world. They have been adversely impacted by human expansion, which affects regional biodiversity by altering the natural habitats of vulnerable, indigenous species. Birds represent a valuable indicator species of environmental change due to their ability to adapt quickly. Investigating the relationship between environmental change, abundance, and behaviors of birds can help us better anticipate potential impacts to island ecosystems...
2017: PeerJ
https://www.readbyqxmd.com/read/28928640/hdac3-inhibitor-rgfp966-modulates-neuronal-memory-for-vocal-communication-signals-in-a-songbird-model
#11
Mimi L Phan, Mark M Gergues, Shafali Mahidadia, Jorge Jimenez-Castillo, David S Vicario, Kasia M Bieszczad
Epigenetic mechanisms that modify chromatin conformation have recently been under investigation for their contributions to learning and the formation of memory. For example, the role of enzymes involved in histone acetylation are studied in the formation of long-lasting memories because memory consolidation requires gene expression events that are facilitated by an open state of chromatin. We recently proposed that epigenetic events may control the entry of specific sensory features into long-term memory by enabling transcription-mediated neuronal plasticity in sensory brain areas...
2017: Frontiers in Systems Neuroscience
https://www.readbyqxmd.com/read/28928269/perturbed-cd8-t-cell-immunity-across-universal-influenza-epitopes-in-the-elderly
#12
Thi H O Nguyen, Sneha Sant, Nicola L Bird, Emma J Grant, E Bridie Clemens, Marios Koutsakos, Sophie A Valkenburg, Stephanie Gras, Martha Lappas, Anthony Jaworowski, Jane Crowe, Liyen Loh, Katherine Kedzierska
Influenza epidemics lead to severe illness, life-threatening complications, and deaths, especially in the elderly. As CD8(+) T cells are associated with rapid recovery from influenza, we investigated the effects of aging on antigen-specific CD8(+) T cells across the universal influenza epitopes in humans. We show that aging is characterized by altered frequencies in T cell subsets, with naive T cells being partially replaced by activated effector/memory populations. Although we observed no striking differences in TCR signaling capacity, T cells in the elderly had increased expression of transcription factors Eomes and T-bet, and such changes were most apparent in CD8(+) T cells...
September 19, 2017: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/28927474/first-detection-and-characterization-of-salmonella-spp-in-poultry-and-swine-raised-in-backyard-production-systems-in-central-chile
#13
R Alegria-Moran, D Rivera, V Toledo, A I Moreno-Switt, C Hamilton-West
Little is known about Salmonella serovars circulating in backyard poultry and swine populations worldwide. Backyard production systems (BPS) that raise swine and/or poultry are distributed across Chile, but are more heavily concentrated in central Chile, where industrialized systems are in close contact with BPS. This study aims to detect and identify circulating Salmonella serovars in poultry and swine raised in BPS. Bacteriological Salmonella isolation was carried out for 1744 samples collected from 329 BPS in central Chile...
September 20, 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/28927014/green-space-and-depression-during-pregnancy-results-from-the-growing-up-in-new-zealand-study
#14
Vikram Nichani, Kim Dirks, Bruce Burns, Amy Bird, Cameron Grant
Background: Antenatal depression is an important contributor to poor maternal health experienced by some women. This study aimed to determine whether exposure to green space during pregnancy is associated with less depression, and whether this association is moderated by relevant factors, such as age, education, self-identified ethnicity, physical activity, residential rurality, and socioeconomic status. Methods: Health data were sourced from the cohort study "Growing Up in New Zealand" comprised of 6772 participants...
September 18, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28926941/why-ubiquitin-has-not-evolved
#15
Douglas C Allan, James C Phillips
Ubiquitin, discovered less than 50 years ago, tags thousands of diseased proteins for destruction. It is small (only 76 amino acids), and is found unchanged in mammals, birds, fish, and even worms, indicating that ubiquitin is perfect. Key features of its functionality are identified here using critical point thermodynamic scaling theory. These include synchronized pivots and hinges, a stabilizing central pivot, and Fano interference between first- and second-order elements of correlated long-range (allosteric) globular surface shape transitions...
September 16, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28926597/altered-embryonic-development-in-northern-bobwhite-quail-colinus-virginianus-induced-by-pre-incubation-oscillatory-thermal-stresses-mimicking-global-warming-predictions
#16
Kelly S Reyna, Warren W Burggren
Global warming is likely to alter reproductive success of ground-nesting birds that lay eggs normally left unattended for days or even weeks before actual parental incubation, especially in already warm climates. The native North American bobwhite quail (Colinus virginianus) is such a species, and pre-incubation quail eggs may experience temperatures ≥45°C. Yet, almost nothing is known about embryonic survival after such high pre-incubation temperatures. Freshly laid bobwhite quail eggs were exposed during a 12 day pre-incubation period to one of five thermal regimes: low oscillating temperatures (25-40°C, mean = 28...
2017: PloS One
https://www.readbyqxmd.com/read/28926155/idna-screening-disease-vectors-as-vertebrate-samplers
#17
Arthur Kocher, Benoit De Thoisy, François Catzeflis, Sophie Valiere, Anne-Laure Bañuls, Jérôme Murienne
In the current context of global change and human-induced biodiversity decline, there is an urgent need for developing sampling approaches able to accurately describe the state of biodiversity. Traditional surveys of vertebrate fauna involve time-consuming and skill-demanding field methods. Recently, the use of DNA derived from invertebrate parasites (leeches and blowflies) was suggested as a new tool for vertebrate diversity assessment. Blood meal analyses of arthropod disease vectors have long been performed to describe their feeding behaviour, for epidemiological purposes...
September 19, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28925562/the-horizontal-transfer-of-salmonella-between-the-lesser-mealworm-alphitobius-diaperinus-and-poultry-manure
#18
T L Crippen, C L Sheffield, R C Beier, D J Nisbet
There is need to determine the nature of enduring reservoirs of Salmonella contributing to perpetual contamination within poultry flocks. The dispersal of Salmonella between birds, litter and the lesser mealworm has been established, but the extent that these act as critical components in the epidemiology of Salmonella infection during broiler grow-out and flock rotation has not been delineated; in particular, the level of participation by the lesser mealworm beetles (LMB) as agents of retention and dispersal...
September 19, 2017: Zoonoses and Public Health
https://www.readbyqxmd.com/read/28925528/relatedness-of-wildlife-and-livestock-avian-isolates-of-the-nosocomial-pathogen-acinetobacter-baumannii-to-lineages-spread-in-hospitals-worldwide
#19
Gottfried Wilharm, Evelyn Skiebe, Paul G Higgins, Marie T Poppel, Ulrike Blaschke, Sarah Leser, Christine Heider, Magdalena Heindorf, Paul Brauner, Udo Jäckel, Karin Böhland, Christiane Cuny, Andżelina Łopińska, Piotr Kaminski, Mariusz Kasprzak, Marcin Bochenski, Olaf Ciebiera, Marcin Tobółka, Katarzyna M Żołnierowicz, Joachim Siekiera, Harald Seifert, Stéphanie Gagné, Suzana P Salcedo, Michael Kaatz, Franziska Layer, Jennifer K Bender, Stephan Fuchs, Torsten Semmler, Yvonne Pfeifer, Leszek Jerzak
The natural habitats and potential reservoirs of the nosocomial pathogen Acinetobacter baumannii are poorly defined. Here, we put forth and tested the hypothesis of avian reservoirs of A. baumannii. We screened tracheal and rectal swab samples from livestock (chicken, geese) and wild birds (white stork nestlings) and isolated A. baumannii from 3% of sampled chicken (n=220), 8% of geese (n=40) and 25% of white stork nestlings (n=661). Virulence of selected avian A. baumannii isolates was comparable to that of clinical isolates in the Galleria mellonella infection model...
September 19, 2017: Environmental Microbiology
https://www.readbyqxmd.com/read/28923917/extinction-risk-is-most-acute-for-the-world-s-largest-and-smallest-vertebrates
#20
William J Ripple, Christopher Wolf, Thomas M Newsome, Michael Hoffmann, Aaron J Wirsing, Douglas J McCauley
Extinction risk in vertebrates has been linked to large body size, but this putative relationship has only been explored for select taxa, with variable results. Using a newly assembled and taxonomically expansive database, we analyzed the relationships between extinction risk and body mass (27,647 species) and between extinction risk and range size (21,294 species) for vertebrates across six main classes. We found that the probability of being threatened was positively and significantly related to body mass for birds, cartilaginous fishes, and mammals...
September 18, 2017: Proceedings of the National Academy of Sciences of the United States of America
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