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https://www.readbyqxmd.com/read/28516389/microenvironmental-scenario-of-the-bone-marrow-of-inorganic-arsenic-exposed-experimental-mice
#1
Jacintha Archana Pereira, Sujata Law
Exposure to arsenic on a regular basis, mainly through drinking water, agricultural pesticide, and sometimes therapeutic dose, results in various diseases of different tissues including the bone marrow hematopoietic system. Hematopoiesis is a dynamic process by which bone marrow (BM) hematopoietic stem/progenitor cells (HSPCs) generate a relatively constant pool of functionally mature blood cells by the support of microenvironmental components. The present study has been aimed to understand stem cell microenvironmental status during arsenic toxicity and the consequent reflection of dysregulation involving the hematopoietic machinery in experimental mice...
May 17, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28507824/non-invasive-radiofrequency-field-treatment-to-produce-hepatic-hyperthermia-efficacy-and-safety-in-swine
#2
Jason C Ho, Lam Nguyen, Justin J Law, Matthew J Ware, V Keshishian, N C Lara, Trac Nguyen, Steven A Curley, Stuart J Corr
The Kanzius non-invasive radio-frequency hyperthermia system (KNiRFH) has been investigated as a treatment option for hepatic hyperthermia cancer therapy. The treatment involves exposing the patient to an external high-power RF (13.56 MHz) electric field, whereby the propagating waves penetrate deep into the tumor causing targeted heating based on differential tissue dielectric properties. However, a comprehensive examination of the Kanzius system alongside any associated toxicities and its ability to induce hepatic hyperthermia in larger animal models, such as swine, are the subjects of the work herein...
2017: IEEE Journal of Translational Engineering in Health and Medicine
https://www.readbyqxmd.com/read/28506903/ethnozoological-assessment-of-animals-used-by-mon-traditional-medicine-vendors-at-kyaiktiyo-myanmar
#3
Vincent Nijman, Chris R Shepherd
ETHNOPHARMACOLOGICAL RELEVANCE: Wild animals are widely used in traditional Asian medicine but information from Myanmar is lacking. We show that a wide range of animals are used at a pilgrimage site, mostly for their rendered fats and oils to be used in mixed concoctions. The majority of species were sold to be used to treat aching joints, muscle ache and skin diseases. AIM OF THE STUDY: To assess wildlife for sale for medicinal purposes, and document their medicinal use at Kyaiktiyo, a pilgrimage site at a 1100m tall mountain, with many of the pilgrims climbing to the top...
May 12, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28505817/fractal-dimension-and-universality-in-avascular-tumor-growth
#4
Fabiano L Ribeiro, Renato Vieira Dos Santos, Angélica S Mata
For years, the comprehension of the tumor growth process has been intriguing scientists. New research has been constantly required to better understand the complexity of this phenomenon. In this paper, we propose a mathematical model that describes the properties, already known empirically, of avascular tumor growth. We present, from an individual-level (microscopic) framework, an explanation of some phenomenological (macroscopic) aspects of tumors, such as their spatial form and the way they develop. Our approach is based on competitive interaction between the cells...
April 2017: Physical Review. E
https://www.readbyqxmd.com/read/28494263/zipf-s-law-of-abbreviation-and-the-principle-of-least-effort-language-users-optimise-a-miniature-lexicon-for-efficient-communication
#5
Jasmeen Kanwal, Kenny Smith, Jennifer Culbertson, Simon Kirby
The linguist George Kingsley Zipf made a now classic observation about the relationship between a word's length and its frequency; the more frequent a word is, the shorter it tends to be. He claimed that this "Law of Abbreviation" is a universal structural property of language. The Law of Abbreviation has since been documented in a wide range of human languages, and extended to animal communication systems and even computer programming languages. Zipf hypothesised that this universal design feature arises as a result of individuals optimising form-meaning mappings under competing pressures to communicate accurately but also efficiently-his famous Principle of Least Effort...
May 8, 2017: Cognition
https://www.readbyqxmd.com/read/28490143/method-for-sampling-and-analysis-of-volatile-biomarkers-in-process-gas-from-aerobic-digestion-of-poultry-carcasses-using-time-weighted-average-spme-and-gc-ms
#6
Jacek A Koziel, Lam T Nguyen, Thomas D Glanville, Heekwon Ahn, Timothy S Frana, J Hans van Leeuwen
A passive sampling method, using retracted solid-phase microextraction (SPME) - gas chromatography-mass spectrometry and time-weighted averaging, was developed and validated for tracking marker volatile organic compounds (VOCs) emitted during aerobic digestion of biohazardous animal tissue. The retracted SPME configuration protects the fragile fiber from buffeting by the process gas stream, and it requires less equipment and is potentially more biosecure than conventional active sampling methods. VOC concentrations predicted via a model based on Fick's first law of diffusion were within 6...
October 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28456853/cultured-meat-in-islamic-perspective
#7
Mohammad Naqib Hamdan, Mark J Post, Mohd Anuar Ramli, Amin Rukaini Mustafa
Cultured meat is a promising product that is derived through biotechnology that partially circumvents animal physiology, thereby being potentially more sustainable, environmentally friendly and animal friendly than traditional livestock meat. Such a novel technology that can impact many consumers evokes ethical, philosophical and religious discussions. For the Islamic community, the crucial question is whether cultured meat is halal, meaning compliant with Islamic laws. Since the culturing of meat is a new discovery, invention and innovation by scientists that has never been discussed by classical jurists (fuqaha'), an ijtihad by contemporary jurists must look for and provide answers for every technology introduced, whether it comply the requirements of Islamic law or not...
April 29, 2017: Journal of Religion and Health
https://www.readbyqxmd.com/read/28444189/environmental-enrichment-in-the-21st-century
#8
Kristine Coleman, Melinda A Novak
More than a quarter of a century has elapsed since the Animal Welfare Act mandated that research facilities develop and follow a plan to promote the psychological well-being of captive primates. Since passage of this law, considerable effort and resources have been directed to designing environmental enrichment strategies in an effort to improve animal welfare. These plans typically consist of environmental enrichment and socialization efforts. While environmental enhancement has undergone a great deal of improvement in the past 25 years, it should be viewed as a continual work in progress, which takes advantage of emergent and future technologies...
April 21, 2017: ILAR Journal
https://www.readbyqxmd.com/read/28436493/an-attenuated-mycobacterium-tuberculosis-clinical-strain-with-a-defect-in-esx-1-secretion-induces-minimal-host-immune-responses-and-pathology
#9
Helena Strand Clemmensen, Niels Peter Hell Knudsen, Erik Michael Rasmussen, Jessica Winkler, Ida Rosenkrands, Ahmad Ahmad, Troels Lillebaek, David R Sherman, Peter Lawætz Andersen, Claus Aagaard
Although Mycobacterium tuberculosis (M.tb) DK9897 is an attenuated strain, it was isolated from a patient with extrapulmonary tuberculosis and vaccination with a subunit vaccine (H56) induced poor protection against it. Both attenuation and lack of protection are because M.tb DK9897 cannot secrete the EsxA virulence factor nor induce a host response against it. Genome sequencing identified a frameshift mutation in the eccCa1 gene. Since the encoded EccCa1 protein provides energy for ESX-1 secretion, it suggested a defect in the ESX-1 type VII secretion system...
April 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28423644/disulfide-bond-disrupting-agents-activate-the-unfolded-protein-response-in-egfr-and-her2-positive-breast-tumor-cells
#10
Renan B Ferreira, Mengxiong Wang, Mary E Law, Bradley J Davis, Ashton N Bartley, Paul J Higgins, Michael S Kilberg, Katherine E Santostefano, Naohiro Terada, Coy D Heldermon, Ronald K Castellano, Brian K Law
Many breast cancer deaths result from tumors acquiring resistance to available therapies. Thus, new therapeutic agents are needed for targeting drug-resistant breast cancers. Drug-refractory breast cancers include HER2+ tumors that have acquired resistance to HER2-targeted antibodies and kinase inhibitors, and "Triple-Negative" Breast Cancers (TNBCs) that lack the therapeutic targets Estrogen Receptor, Progesterone Receptor, and HER2. A significant fraction of TNBCs overexpress the HER2 family member Epidermal Growth Factor Receptor (EGFR)...
April 25, 2017: Oncotarget
https://www.readbyqxmd.com/read/28414619/how-the-nerves-reached-the-muscle-bernard-katz-stephen-w-kuffler-and-john-c-eccles-certain-implications-of-exile-for-the-development-of-twentieth-century-neurophysiology
#11
Frank W Stahnisch
This article explores the work by Bernard Katz (1911-2003), Stephen W. Kuffler (1913-1980), and John C. Eccles (1903-1997) on the nerve-muscle junction as a milestone in twentieth-century neurophysiology with wider scientific implications. The historical question is approached from two perspectives: (a) an investigation of twentieth-century solutions to a longer physiological dispute and (b) an examination of a new kind of laboratory and academic cooperation. From this vantage point, the work pursued in Sydney by Sir John Carew Eccles' team on the neuromuscular junction is particularly valuable, since it contributed a central functional element to modern physiological understanding regarding the function and structure of the human and animal nervous system...
April 17, 2017: Journal of the History of the Neurosciences
https://www.readbyqxmd.com/read/28413809/preclinical-imaging-of-iridocorneal-angle-and-fundus-using-a-modified-integrated-flexible-handheld-probe
#12
Xun Jie Jeesmond Hong, Vengalathunadakal K Shinoj, Vadakke Matham Murukeshan, Mani Baskaran, Tin Aung
A flexible handheld imaging probe consisting of a [Formula: see text] charge-coupled device camera, light-emitting diode light sources, and near-infrared laser source is designed and developed. The imaging probe is designed with specifications to capture the iridocorneal angle images and posterior segment images. Light propagation from the anterior chamber of the eye to the exterior is considered analytically using Snell's law. Imaging of the iridocorneal angle region and fundus is performed on ex vivo porcine samples and subsequently on small laboratory animals, such as the New Zealand white rabbit and nonhuman primate, in vivo...
April 2017: Journal of Medical Imaging
https://www.readbyqxmd.com/read/28407279/orangutan-trade-confiscations-and-lack-of-prosecutions-in-indonesia
#13
Vincent Nijman
Prosecuting and sentencing law breakers punishes the offender and acts as a deterrent for future law breakers. With thousands of Sumatran and Bornean orangutans (Pongo abelii and P. pygmaeus) having entered private and government rescue centers and facilities, I evaluate the role of successful prosecution in orangutan conservation in Indonesia. Orangutans have been protected in Indonesian since 1931 and they are not allowed to be traded or to be kept as pets. In the period 1993-2016 at least 440 orangutans were formally confiscated, and many more were "donated" to law enforcement agencies...
April 13, 2017: American Journal of Primatology
https://www.readbyqxmd.com/read/28400519/balance-of-microtubule-stiffness-and-cortical-tension-determines-the-size-of-blood-cells-with-marginal-band-across-species
#14
Serge Dmitrieff, Adolfo Alsina, Aastha Mathur, François J Nédélec
The fast bloodstream of animals is associated with large shear stresses. To withstand these conditions, blood cells have evolved a special morphology and a specific internal architecture to maintain their integrity over several weeks. For instance, nonmammalian red blood cells, mammalian erythroblasts, and platelets have a peripheral ring of microtubules, called the marginal band, that flattens the overall cell morphology by pushing on the cell cortex. In this work, we model how the shape of these cells stems from the balance between marginal band rigidity and cortical tension...
April 25, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28391488/selective-auditory-grouping-by-zebra-finches-testing-the-iambic-trochaic-law
#15
Michelle Spierings, Jeroen Hubert, Carel Ten Cate
Humans have a strong tendency to spontaneously group visual or auditory stimuli together in larger patterns. One of these perceptual grouping biases is formulated as the iambic/trochaic law, where humans group successive tones alternating in pitch and intensity as trochees (high-low and loud-soft) and alternating in duration as iambs (short-long). The grouping of alternations in pitch and intensity into trochees is a human universal and is also present in one non-human animal species, rats. The perceptual grouping of sounds alternating in duration seems to be affected by native language in humans and has so far not been found among animals...
April 8, 2017: Animal Cognition
https://www.readbyqxmd.com/read/28389221/welfare-law-and-ethics-in-the-veterinary-intensive-care-unit-a-discussion-of-the-different-types-of-suffering-that-patients-may-endure-in-the-veterinary-intensive-care-unit-the-legal-limits-to-that-suffering-and-the-ethics-underpinning-at-what-point-that-suffering
#16
REVIEW
Peter S Fordyce
OBJECTIVES: In UK law, allowing an animal protected under the Animal Welfare Act 2006 (AWA 2006) (as devolved) to suffer 'unnecessarily' may render the person responsible for it to prosecution. The act does not define suffering, although 'case law' suggests that suffering encompasses more than pain. Clinicians responsible for animals under their care in the intensive care unit (ICU) are likely to also be responsible in law for the welfare of those animals, and may be called upon to justify why any suffering was necessary, or more likely, why they did not act to end any suffering when it became 'unnecessary'...
January 11, 2017: Veterinary Anaesthesia and Analgesia
https://www.readbyqxmd.com/read/28382972/bio-inspired-murray-materials-for-mass-transfer-and-activity
#17
Xianfeng Zheng, Guofang Shen, Chao Wang, Yu Li, Darren Dunphy, Tawfique Hasan, C Jeffrey Brinker, Bao-Lian Su
Both plants and animals possess analogous tissues containing hierarchical networks of pores, with pore size ratios that have evolved to maximize mass transport and rates of reactions. The underlying physical principles of this optimized hierarchical design are embodied in Murray's law. However, we are yet to realize the benefit of mimicking nature's Murray networks in synthetic materials due to the challenges in fabricating vascularized structures. Here we emulate optimum natural systems following Murray's law using a bottom-up approach...
April 6, 2017: Nature Communications
https://www.readbyqxmd.com/read/28378196/eco-friendly-control-of-the-poultry-red-mite-dermanyssus-gallinae-dermanyssidae-using-the-%C3%AE-thujone-rich-essential-oil-of-artemisia-sieberi-asteraceae-toxic-and-repellent-potential
#18
Mohaddeseh Abouhosseini Tabari, Mohammad Reza Youssefi, Giovanni Benelli
The poultry red mite, Dermanyssus gallinae, represents a key threat for the poultry industry worldwide. The control of D. gallinae is mainly achieved by continuous applications of acaricides. However, the fast-growing development of resistance, and the strict laws concerning chemicals admitted for treatments on food animals, highlighted the importance of alternative control tools. Here, we explored the potential of Artemisia sieberi essential oil against D. gallinae. In this study, the A. sieberi essential oil was analyzed using GC and GC-MS...
April 5, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28345059/health-and-disease-imprinted-in-the-time-variability-of-the-human-microbiome
#19
Jose Manuel Martí, Daniel Martínez-Martínez, Teresa Rubio, César Gracia, Manuel Peña, Amparo Latorre, Andrés Moya, Carlos P Garay
The animal microbiota (including the human microbiota) plays an important role in keeping the physiological status of the host healthy. Research seeks greater insight into whether changes in the composition and function of the microbiota are associated with disease. We analyzed published 16S rRNA and shotgun metagenomic sequencing (SMS) data pertaining to the gut microbiotas of 99 subjects monitored over time. Temporal fluctuations in the microbial composition revealed significant differences due to factors such as dietary changes, antibiotic intake, age, and disease...
March 2017: MSystems
https://www.readbyqxmd.com/read/28344897/testing-of-microsatellite-multiplexes-for-individual-identification-of-cape-parrots-poicephalus-robustus-paternity-testing-and-monitoring-trade
#20
Willem G Coetzer, Colleen T Downs, Mike R Perrin, Sandi Willows-Munro
BACKGROUND: Illegal trade in rare wildlife species is a major threat to many parrot species around the world. Wildlife forensics plays an important role in the preservation of endangered or threatened wildlife species. Identification of illegally harvested or traded animals through DNA techniques is one of the many methods used during forensic investigations. Natural populations of the South African endemic Cape Parrot (Poicephalus robustus) are negatively affected by the removal of eggs and chicks for the pet trade...
2017: PeerJ
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