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https://www.readbyqxmd.com/read/29150187/-137-cs-in-mushrooms-from-croatia-sampled-15-30-years-after-chernobyl
#1
Ivana Tucaković, Delko Barišić, Željko Grahek, Ante Kasap, Ivan Širić
The aim of this study was to select species with higher potential to accumulate (137)Cs among the available mushroom species, by determining the activity concentrations of (137)Cs in mushrooms collected along north and north-western part of Croatia. A total of 55 samples of 14 different species were analyzed and the potential of mycorrhizal and saprotrophic species to accumulate (137)Cs was compared. A wide range of the dry weight activity concentrations of (137)Cs was detected, ranging from 0.95 to 1210 Bq/kg (154 Bq/kg mean value; 52...
November 14, 2017: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/29148887/wild-birds-as-a-potential-source-of-known-and-novel-multilocus-sequence-types-of-antibiotic-resistant-enterococcus-faecalis
#2
Dagmara Stępień-Pyśniak, Tomasz Hauschild, Anna Nowaczek, Agnieszka Marek, Marta Dec
We assessed the antibiotic resistance and genetic diversity of 27 Enterococcus faecalis isolates from 25 wild bird species in Poland. Resistance to lincomycin (100%) was most common followed by tetracycline (48%), erythromycin (44%), and ciprofloxacin (22%). High-level resistance to streptomycin and kanamycin was observed in 19 and 15% of isolates, respectively. One isolate (4%) exhibited low-level resistance to penicillin and vancomycin, and all isolates were susceptible to gentamicin and chloramphenicol. Antibiotic resistance was linked to the tet(M), tet(L), erm(A), erm(B), msr(A/B), ant(6)-Ia, and aph(3')-IIIa genes...
November 17, 2017: Journal of Wildlife Diseases
https://www.readbyqxmd.com/read/29148114/on-the-character-and-production-of-active-participation-in-neuro-rehabilitation-an-actor-network-perspective
#3
Simon Horton, Kathryn Mares, Neil Coull, Fiona Poland
The importance of patients' active involvement in neuro-rehabilitation after acquired brain injury has been consistently emphasised in recent years. However, most approaches fail to show how 'active participation' is practically enacted, focusing on individualised explanations of patient choice and behaviours, or notions of inherent patient traits. Using actor-network theory (ANT) as a sensitising concept, we investigated neuro-rehabilitation practices, asking how participation is shaped through biological and socio-material specificities, how rights to knowledge and expertise are constructed, and how a body acclimatises and adjusts within an order of participation and transformation...
November 2017: Sociology of Health & Illness
https://www.readbyqxmd.com/read/29147977/are-isomeric-alkenes-used-in-species-recognition-among-neo-tropical-stingless-bees-melipona-spp
#4
Stephen J Martin, Sue Shemilt, Cândida B da S Lima, Carlos A L de Carvalho
Our understanding of the role of cuticular hydrocarbons (CHC) in recognition is based largely on temperate ant species and honey bees. The stingless bees remain relatively poorly studied, despite being the largest group of eusocial bees, comprising more than 400 species in some 60 genera. The Meliponini and Apini diverged between 80-130 Myr B.P. so the evolutionary trajectories that shaped the chemical communication systems in ants, honeybees and stingless bees may be very different. The aim of this study was to study if a unique species CHC signal existed in Neotropical stingless bees, as has been shown for many temperate species, and what compounds are involved...
November 17, 2017: Journal of Chemical Ecology
https://www.readbyqxmd.com/read/29147779/the-role-of-ants-in-north-temperate-grasslands-a-review
#5
REVIEW
B D Wills, D A Landis
Historic and current land-use changes have altered the landscape for grassland biota, with over 90% of grasslands and savannas converted to agriculture or some other use in north temperate regions. Reintegrating grasslands into agricultural landscapes can increase biodiversity while also providing valuable ecosystem services. In contrast to their well-known importance in tropical and subtropical ecosystems, the role of ants in temperate grasslands is often underappreciated. As consumers and ecosystem engineers, ants in temperate grasslands influence invertebrate, plant, and soil microbial diversity and potentially alter grassland productivity...
November 16, 2017: Oecologia
https://www.readbyqxmd.com/read/29146769/the-interaction-of-path-integration-and-terrestrial-visual-cues-in-navigating-desert-ants-what-can-we-learn-from-path-characteristics
#6
Cornelia Buehlmann, A Sofia D Fernandes, Paul Graham
Ant foragers make use of multiple navigational cues to navigate through the world and the combination of innate navigational strategies and the learning of environmental information is the secret of their navigational success. We present here detailed information about the paths of Cataglyphis fortis desert ants navigating by an innate strategy, namely path integration. Firstly, we observe that the ants' walking speed decreases significantly along their homing paths, such that they slow down just before reaching the goal, and maintain a slower speed during subsequent search paths...
November 16, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/29146768/adhesive-performance-of-tropical-arboreal-ants-varies-with-substrate-temperature
#7
Alyssa Y Stark, Katherine Arstingstall, Stephen P Yanoviak
The surface temperature of tree branches in the tropical rainforest canopy can reach up to 55°C. Ants and other small cursorial organisms must maintain adequate attachment in this extreme microenvironment to forage effectively and prevent falling. Ant adhesion depends on liquid secretions that should become less viscous at high temperatures, causing ants to slip. However, tropical arboreal ants have high thermal tolerance and actively forage on hot canopy surfaces, suggesting that these ants can maintain adhesion on hot substrates...
November 16, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/29145459/the-construction-of-ventilation-turrets-in-atta-vollenweideri-leaf-cutting-ants-carbon-dioxide-levels-in-the-nest-tunnels-but-not-airflow-or-air-humidity-influence-turret-structure
#8
Florian Halboth, Flavio Roces
Nest ventilation in the leaf-cutting ant Atta vollenweideri is driven via a wind-induced mechanism. On their nests, workers construct small turrets that are expected to facilitate nest ventilation. We hypothesized that the construction and structural features of the turrets would depend on the colony's current demands for ventilation and thus might be influenced by the prevailing environmental conditions inside the nest. Therefore, we tested whether climate-related parameters, namely airflow, air humidity and CO2 levels in the outflowing nest air influenced turret construction in Atta vollenweideri...
2017: PloS One
https://www.readbyqxmd.com/read/29143786/dietary-factors-associated-with-plasma-thyroid-peroxidase-and-thyroglobulin-antibodies
#9
Antonela Matana, Vesela Torlak, Dubravka Brdar, Marijana Popović, Bernarda Lozić, Maja Barbalić, Vesna Boraska Perica, Ante Punda, Ozren Polašek, Caroline Hayward, Tatijana Zemunik
The knowledge about dietary habits and their influence in the development of autoimmune thyroid disease is insufficient. The aim of this study was to analyse the association of dietary factors and plasma thyroid peroxidase antibodies (TPO-Ab) and/or thyroglobulin antibodies (Tg-Ab). The study enrolled 1887 participants originating from the South Croatia. Participants with elevated plasma TPO-Ab and/or Tg-Ab were defined as cases (n = 462) and those with TPO-Ab and/or Tg-Ab within referent values were defined as controls (n = 1425)...
October 28, 2017: Nutrients
https://www.readbyqxmd.com/read/29142030/plasma-microrna-profiles-in-patients-with-early-rheumatoid-arthritis-responding-to-adalimumab-plus-methotrexate-vs-methotrexate-alone-a-placebo-controlled-clinical-trial
#10
Jacob Sode, Sophine B Krintel, Anting Liu Carlsen, Merete L Hetland, Julia S Johansen, Kim Hørslev-Petersen, Kristian Stengaard-Pedersen, Torkell Ellingsen, Mark Burton, Peter Junker, Mikkel Østergaard, Niels H H Heegaard
OBJECTIVE: The aim was to identify plasma (i.e., cell-free) microRNA (miRNA) predicting antitumor necrosis and/or methotrexate (MTX) treatment response in patients enrolled in an investigator-initiated, prospective, double-blinded, placebo-controlled trial (The OPERA study, NCT00660647). METHODS: We included 180 disease-modifying antirheumatic drug-naive patients with early rheumatoid arthritis (RA) randomized to adalimumab (ADA; n = 89) or placebo (n = 91) in combination with MTX...
November 15, 2017: Journal of Rheumatology
https://www.readbyqxmd.com/read/29138934/habitat-quality-affects-stress-responses-and-survival-in-a-bird-wintering-under-extremely-low-ambient-temperatures
#11
Dina Cīrule, Tatjana Krama, Ronalds Krams, Didzis Elferts, Ants Kaasik, Markus J Rantala, Pranas Mierauskas, Severi Luoto, Indrikis A Krams
Animals normally respond to stressful environmental stimuli by releasing glucocorticoid hormones. We investigated whether baseline corticosterone (CORT), handling-induced corticosterone concentration(s), and body condition indices of members of willow tit (Poecile montanus) groups differed while wintering in old growth forests and managed young forests in mild weather conditions and during cold spells. Willow tits spend the winter season in non-kin groups in which dominant individuals typically claim their priority to access resources, while subordinate individuals may experience greater levels of stress and higher mortality, especially during cold spells...
November 14, 2017: Die Naturwissenschaften
https://www.readbyqxmd.com/read/29134724/biogeography-of-mutualistic-fungi-cultivated-by-leafcutter-ants
#12
Ulrich G Mueller, Heather D Ishak, Sofia M Bruschi, Chad C Smith, Jacob J Herman, Scott E Solomon, Alexander S Mikheyev, Christian Rabeling, Jarrod J Scott, Michael Cooper, Andre Rodrigues, Adriana Ortiz, Carlos Roberto F Brandão, John E Lattke, Fernando C Pagnocca, Stephen A Rehner, Ted R Schultz, Heraldo L Vasconcelos, Rachelle M M Adams, Martin Bollazzi, Rebecca M Clark, Anna G Himler, John S LaPolla, Inara R Leal, Robert A Johnson, Flavio Roces, Jeffrey Sosa-Calvo, Rainer Wirth, Maurício Bacci
Leafcutter ants propagate co-evolving fungi for food. The nearly 50 species of leafcutter ants (Atta, Acromyrmex) range from Argentina to the USA, with the greatest species diversity in southern South America. We elucidate the biogeography of fungi cultivated by leafcutter ants using DNA-sequence and microsatellite-marker analyses of 474 cultivars collected across the leafcutter range. Fungal cultivars belong to two clades (Clade-A, Clade-B). The dominant and widespread Clade-A cultivars form three genotype-clusters, with their relative prevalence corresponding to southern South America, northern South America, and Central & North America...
November 13, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/29133997/eight-new-species-of-batrisodes-reitter-from-china-coleoptera-staphylinidae-pselaphinae
#13
Ri-Xin Jiang, Zi-Wei Yin
Eight new species of the genus Batrisodes Reitter are described from continental China, seven of which were found in association with ants: B. abdominalissp. n. and B. tianmuensissp. n. with an Ectomomyrmex ant from Zhejiang; B. grossussp. n. with an Odontomachus ant from Guangxi; B. simianshanussp. n. with an Aphaenogaster ant from Chongqing; B. qiuluisp. n. with a Pheidole ant, B. xuhaoisp. n. with a Lasius ant, and B. zhouchaoisp. n. with Lasius and Nylanderia ants from Sichuan. Batrisodes zethussp. n. was collected from a leaf litter sample...
2017: ZooKeys
https://www.readbyqxmd.com/read/29133430/the-dual-function-of-the-polybasic-juxtamembrane-region-of-syntaxin-1a-in-clamping-spontaneous-release-and-stimulating-ca-2-triggered-release-in-neuroendocrine-cells
#14
Dafna Singer-Lahat, Noa Barak-Broner, Anton Sheinin, Dafna Greitzer-Antes, Izhak Michaelevski, Ilana Lotan
The exact function of the polybasic juxtamembrane region (5RK) of the plasma membrane neuronal SNARE, syntaxin 1A (Syx), in vesicle exocytosis, although widely studied, is currently not clear. Here, we addressed the role of 5RK in Ca(2+)-triggered release, using our Syx-based intramolecular FRET probe, which previously allowed us to resolve a depolarization-induced Ca(+2)- dependent close-to-open transition (CDO) of Syx that occurs concomitant with evoked release, both in PC12 cells and hippocampal neurons and was abolished upon charge neutralization of 5RK...
November 13, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29132827/high-performance-thin-layer-chromatographic-methods-in-the-evaluation-of-the-antioxidant-and-anti-hyperglycemic-activity-of-myrmecodia-platytyrea-as-a-promising-opportunity-in-diabetes-treatment
#15
S Agatonovic-Kustrin, D W Morton, A Adam, H H Mizaton, H Zakaria
The steady increase of diabetes is becoming a major burden on health care systems. As diabetic complications arise from oxidative stress, an antioxidant therapy along with anti-diabetic drugs is recommended. Myrmecodia or ant plant is highly valued as a traditional medicine in West Papua. It is used as an alternative treatment for diabetes, as the substances produced by ants can reduce blood sugar levels. The aim of this study was to develop and establish high-performance thin-layer chromatographic (HPTLC)-bioautographic methods to measure the antioxidant and hypoglycemic effects in different extracts from Myrmecodia platytyrea and to compare them with sterol content...
November 10, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/29132547/distribution-of-genes-encoding-resistance-to-aminoglycoside-modifying-enzymes-in-methicillin-resistant-staphylococcus-aureus-mrsa-strains
#16
Azar Dokht Khosravi, Atefeh Jenabi, Effat Abbasi Montazeri
Today Methicillin-Resistant Staphylococcus aureus (MRSA) have acquired multiple resistance to a wide range of antibiotics including aminoglycosides. So, this study was aimed to investigate the rate of aminoglycoside resistance and the frequency of aminoglycoside resistance mediated genes of aac(Ia)-2, aph(3)-IIIa and ant(4')-Ia among MRSA strains. A total of 467 staphylococci isolates were collected from various clinical samples. S. aureus strains were identified by standard culture and identification criteria and investigating of presence of 16S rRNA and nuc genes...
December 2017: Kaohsiung Journal of Medical Sciences
https://www.readbyqxmd.com/read/29132325/level-causes-and-risk-factors-of-stillbirth-a-population-based-case-control-study-from-chandigarh-india
#17
Ariarathinam Newtonraj, Manmeet Kaur, Madhu Gupta, Rajesh Kumar
BACKGROUND: Globally, India ranks first in the absolute number of stillbirths. Hence, the level, causes, and risk factors of stillbirths were estimated to facilitate designing of prevention strategy. METHODS: Capture and recapture method was used to identify 301 stillbirths from 1st July 2013 to 31st August 2014 in Chandigarh Union Territory of India. Verbal autopsies (n = 181) were done at household level to identify causes of stillbirths. Risk factors were determined using case-control approach...
November 13, 2017: BMC Pregnancy and Childbirth
https://www.readbyqxmd.com/read/29129975/forensic-age-estimation-of-chinese-malaysian-adults-by-evaluating-occlusal-tooth-wear-using-modified-kim-s-index
#18
Chai Kit Lu, Margaret Chia Soo Yee, Spoorthi Banavar Ravi, Rohit Pandurangappa
Background and Objective: Evaluation of dental attrition is an easy and relatively accurate approach to estimating the age of an adult either ante- or postmortem for some specific population. Dental attrition represents a progressive physiological age change that can be measured using variety of indices to aid as an adjunct in forensic age estimation. Some of the previously proposed indices have their own practical limitations. This paper focuses on using modified Kim's criteria to score dental attrition to estimate the age of Chinese Malaysian adults and validate it...
2017: International Journal of Dentistry
https://www.readbyqxmd.com/read/29128034/use-of-extracorporeal-membrane-oxygenation-and-surgical-embolectomy-for-massive-pulmonary-embolism-in-the-emergency-department
#19
De Ante Russ, Nicole Payne, Mark Bonnell, Viviane Kazan
BACKGROUND: Massive pulmonary embolism (PE) carries significant morbidity and mortality with current standard of care modalities. CASE REPORT: We present the case of a 63-year-old male status post abdominal surgery 2 weeks before presenting to the emergency department with a massive pulmonary embolism and subsequent acute cardiopulmonary failure. WHY SHOULD AN EMERGENCY PHYSICIAN BE AWARE OF THIS?: Here we describe a case of extracorporeal membrane oxygenation (ECMO) deployed in the emergency department as a bridge to embolectomy to successfully treat massive pulmonary embolism...
November 2017: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29127890/the-role-of-ethyl-glucuronide-in-supporting-medico-legal-investigations-analysis-of-this-biomarker-in-different-postmortem-specimens-from-21-selected-autopsy-cases
#20
Anna Laura Santunione, Patrizia Verri, Filippo Marchesi, Cecilia Rustichelli, Federica Palazzoli, Daniele Vandelli, Manuela Licata, Enrico Silingardi
Ethanol determination in postmortem blood is one of the most frequently requested analyses in legal medicine and forensic toxicology. Ethyl glucuronide is a non-oxidative ethanol metabolite. It is also a useful marker of ante-mortem alcohol ingestion when ethanol itself has been completely eliminated from the body and could be considered in autopsy cases to obtain more reliable indications. The aim of the present study was to investigate the ethyl glucuronide distribution in postmortem specimens from autopsy cases found to be positive for ethanol...
November 1, 2017: Journal of Forensic and Legal Medicine
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