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https://www.readbyqxmd.com/read/28938775/effects-of-different-types-of-dark-brooders-on-injurious-pecking-damage-and-production-related-traits-at-rear-and-lay-in-layers
#1
A B Riber, D A Guzman
Injurious pecking (IP) remains one of the major welfare challenges in housing of laying hens worldwide due to the negative consequences it inflicts on animal welfare and economy. One potential solution to reduce IP is the use of dark brooders as the primary heat source during rearing. The objective was to investigate effects of rearing layer chicks with different management strategies and size allowances of dark brooders on IP and production-related traits during rear and lay. Groups of 100 to 103 Isa Warren chicks were reared either with one of 4 brooder types (n = 4 per treatment) or with whole-house heating (control: n = 6)...
October 1, 2017: Poultry Science
https://www.readbyqxmd.com/read/28934967/building-a-resistance-to-ignition-testing-device-for-sunglasses-and-analysing-data-a-continuing-study-for-sunglasses-standards
#2
Renan Magri, Mauro Masili, Fernanda Oliveira Duarte, Liliane Ventura
BACKGROUND: Sunglasses popularity skyrocketed since its advent. The ongoing trend led to the creation of standards to protect consumers from injuries and secondary hazards due to spectacles use. In Brazil, the corresponding standard is NBR ISO 12312-1:2015 and since there is no mandatory testing, evaluating sunglasses performance provides an insight into compliance with the standard. In a continuing revision of sunglasses standards requirements, resistance to ignition is one of the concerns, since sunglasses should be protected from burning into flames at a pre-determined temperature, which may protect user of getting their sunglasses into flames if some, cigarette sparks reaches the spectacles, as an example...
September 21, 2017: Biomedical Engineering Online
https://www.readbyqxmd.com/read/28932251/a-metabolomics-based-strategy-for-the-mechanism-exploration-of-traditional-chinese-medicine-descurainia-sophia-seeds-extract-and-fractions-as-a-case-study
#3
Ning Zhou, Ya-Ping Sun, Xiao-Ke Zheng, Qiu-Hong Wang, Yan-Yun Yang, Zhi-Yao Bai, Hai-Xue Kuang, Wei-Sheng Feng
A UPLC-QTOF-MS based metabolomics research was conducted to explore potential biomarkers which would increase our understanding of the model and to assess the integral efficacy of Descurainia sophia seeds extract (DS-A). Additionally, DS-A was split into five fractions in descending order of polarity, which were utilized to illustrate the mechanism together. The 26 identified biomarkers were mainly related to disturbances in phenylalanine, tyrosine, tryptophan, purine, arginine, and proline metabolism. Furthermore, heat map, hierarchical cluster analysis (HCA), and correlation network diagram of biomarkers perturbed by modeling were all conducted...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28931334/repeated-exposure-to-experimental-pain-differentiates-combat-tbi-with-and-without-ptsd
#4
Irina A Strigo, Andrea D Spadoni, Sabra S Inslicht, Alan N Simmons
Mild traumatic brain injury(mTBI) and posttraumatic stress disorder(PTSD) are highly comorbid conditions that often co-occur with chronic pain. We have shown that women with PTSD following intimate partner violence show attenuated brain response to repeated experimental pain that was related to symptoms of avoidance. The aim of this study was to extend our prior findings to males with combat trauma and to examine brain response to experimental pain in men with and without PTSD who sustained mTBI during combat...
September 20, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/28926845/leptospirosis-renal-disease-emerging-culprit-of-chronic-kidney-disease-unknown-etiology
#5
Chih-Wei Yang
Leptospirosis is the most prevalent zoonosis affecting more than 1 million populations worldwide. Interestingly, leptospirosis endemic regions coincide with chronic kidney disease (CKD) hotspots largely due to flooding and agricultural overlaps. Acute leptospirosis induces multiple organ dysfunction including acute kidney injury and may predispose to CKD and end-stage renal disease, if not treated timely. Asymptomatic infection may carry the bacteria in the kidney and CKD progresses insidiously. Histologic finding of leptospirosis renal disease includes tubulointerstitial nephritis, interstitial fibrosis, and tubular atrophy...
September 20, 2017: Nephron
https://www.readbyqxmd.com/read/28924378/vasopressin-mediates-the-renal-damage-induced-by-limited-fructose-rehydration-in-recurrently-dehydrated-rats
#6
Fernando E García-Arroyo, Edilia Tapia, Mónica G Blas-Marron, Guillermo Gonzaga, Octaviano Silverio, Magdalena Cristóbal, Horacio Osorio, Abraham S Arellano-Buendía, Cecilia Zazueta, Omar Emiliano Aparicio-Trejo, Juan G Reyes-García, José Pedraza-Chaverri, Virgilia Soto, Carlos Roncal-Jiménez, Richard J Johnson, Laura G Sánchez-Lozada
Recurrent dehydration and heat stress cause chronic kidney damage in experimental animals. The injury is exacerbated by rehydration with fructose-containing beverages. Fructose may amplify dehydration-induced injury by directly stimulating vasopressin release and also by acting as a substrate for the aldose reductase-fructokinase pathway, as both of these systems are active during dehydration. The role of vasopressin in heat stress associated injury has not to date been explored. Here we show that the amplification of renal damage mediated by fructose in thermal dehydration is mediated by vasopressin...
2017: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/28919395/gastroprotective-effect-of-aucubin-against-ethanol-induced-gastric-mucosal-injury-in-mice
#7
Yang Yang, Bing Yin, Le Lv, Ziye Wang, Jiao He, Ziyang Chen, Xin Wen, Yongmin Zhang, Wenji Sun, Yang Li, Ye Zhao
AIMS: Aucubin, an iridoid glycoside, was isolated from seeds of Eucommia ulmoides Oliver. This study was aimed to evaluate the protective effect of aucubin against ethanol-induced gastric mucosal injury in mice. MATERIALS AND METHODS: Mice were orally administrated with aucubin (20, 40 and 80mg/kg) for 3 consecutive days. On the 3rd day, the mice of gastric mucosal injury were induced with 70% ethanol after the last administration of aucubin. Gastric tissue of mice were submitted for evaluating the severity of gastric mucosal injury...
September 14, 2017: Life Sciences
https://www.readbyqxmd.com/read/28918684/differential-induction-of-c-fos-and-phosphorylated-erk-by-a-noxious-stimulus-after-peripheral-nerve-injury
#8
Mitsuyasu Tabata, Ryuji Terayama, Kotaro Maruhama, Seiji Iida, Tomosada Sugimoto
Induction of c-Fos and phosphorylated extracellular signal-regulated kinase (p-ERK) has been demonstrated in spinal dorsal horn neurons by noxious stimuli. In this study, we compared induction of c-Fos and p-ERK in the spinal dorsal horn after peripheral nerve injury. We examined the spinal dorsal horn for noxious heat-induced c-Fos and p-ERK protein-like immunoreactive (c-Fos- and p-ERK-IR) neuron profiles after tibial nerve injury. A large number of c-Fos- and p-ERK-IR neuron profiles were induced by noxious heat stimulation to the hindpaw in sham-operated animals...
September 18, 2017: International Journal of Neuroscience
https://www.readbyqxmd.com/read/28917388/improvised-hand-injury-treatment-using-traditional-veterinary-medicine-in-ethiopia
#9
Raf Aerts, Eva J J November, Maissa Rayyan
In remote wilderness environments, local people with traditional knowledge of medicinal plants are potentially important first-line health care providers. We present a case of a 31-year-old man who fell off a horse while trekking through a remote mountain landscape in Ethiopia and sustained blunt force trauma to the hand. A local mountain hut keeper examined the patient's hand and used heated leaves of the succulent plant Kalanchoe petitiana to treat a suspected metacarpal fracture. As first responder in a low-resource setting, the hut keeper relied on his traditional knowledge of ethnoveterinary medicine to improvise a treatment for a human injury in a remote mountain environment...
September 13, 2017: Wilderness & Environmental Medicine
https://www.readbyqxmd.com/read/28916678/gucy2c-signaling-opposes-the-acute-radiation-induced-gi-syndrome
#10
Peng Li, Evan Wuthrick, Jeff A Rappaport, Crystal Kraft, Jieru E Lin, Glen Marszalowicz, Adam E Snook, Tingting Zhan, Terry M Hyslop, Scott A Waldman
High doses of ionizing radiation induce acute damage to epithelial cells of the gastrointestinal (GI) tract, mediating toxicities restricting the therapeutic efficacy of radiation in cancer and morbidity and mortality in nuclear disasters. No approved prophylaxis or therapy exists for these toxicities, in part reflecting an incomplete understanding of mechanisms contributing to the acute radiation-induced GI syndrome (RIGS). Guanylate cyclase C (GUCY2C) and its hormones guanylin and uroguanylin have recently emerged as one paracrine axis defending intestinal mucosal integrity against mutational, chemical, and inflammatory injury...
September 15, 2017: Cancer Research
https://www.readbyqxmd.com/read/28915951/male-contraception-prospects-for-sound-and-ultrasound
#11
Robert Sewak, Bettina Teng, Lee A Learman, Charles H Hennekens
The worldwide human population growth rate, which doubled during the 20th century, as well as the increasing fertility rate, have contributed to an increasing and evolving emphasis on contraception. With respect to female contraceptive methods, many have been developed, marketed, and are widely available. In contrast, male contraception has been limited to condoms, which pose logistical challenges, and vasectomy, which is largely irreversible. The use of sound to achieve effective and safe male contraception is a promising but unproven hypothesis...
September 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/28915215/mechanisms-involved-in-secondary-cardiac-dysfunction-in-animal-models-of-trauma-and-hemorrhagic-shock
#12
Nick M Wilson, Johanna Wall, Veena Naganathar, Karim Brohi, Henry D De'Ath
Clinical evidence reveals the existence of a trauma-induced secondary cardiac injury (TISCI) that is associated with poor patient outcomes. The mechanisms leading to TISCI in injured patients are uncertain. Conversely, animal models of trauma hemorrhage have repeatedly demonstrated significant cardiac dysfunction following injury, and highlighted mechanisms through which this might occur. The aim of this review was to provide an overview of the animal studies describing TISCI and its pathophysiology.Basic science models of trauma show evidence of innate immune system activation via Toll-like receptors, the exact protagonists of which remain unclear...
October 2017: Shock
https://www.readbyqxmd.com/read/28911512/cardioprotective-effects-of-hsp72%C3%A2-administration-on-ischemia-reperfusion-injury
#13
Takashi Tanimoto, Missag H Parseghian, Takehiro Nakahara, Hideki Kawai, Navneet Narula, Dongbin Kim, Robert Nishimura, Richard H Weisbart, Grace Chan, Richard A Richieri, Nezam Haider, Farhan Chaudhry, Glenn T Reynolds, John Billimek, Francis G Blankenberg, Partho P Sengupta, Artiom D Petrov, Takashi Akasaka, H William Strauss, Jagat Narula
BACKGROUND: Although early reperfusion is the most desirable intervention after ischemic myocardial insult, it may add to damage through oxidative stress. OBJECTIVES: This study investigated the cardioprotective effects of a single intravenous dose of heat shock protein-72 (HSP72) coupled to a single-chain variable fragment (Fv) of monoclonal antibody 3E10 (3E10Fv) in a rabbit ischemia-reperfusion model. The Fv facilitates rapid transport of HSP72 into cells, even with intact membranes...
September 19, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28895899/effects-of-heat-stress-on-construction-labor-productivity-in-hong-kong-a-case-study-of-rebar-workers
#14
Wen Yi, Albert P C Chan
Global warming is bringing more frequent and severe heat waves, and the result will be serious for vulnerable populations such as construction workers. Excessive heat stress has profound effects on physiological responses, which cause occupational injuries, fatalities and low productivity. Construction workers are particularly affected by heat stress, because of the body heat production caused by physically demanding tasks, and hot and humid working conditions. Field studies were conducted between August and September 2016 at two construction training grounds in Hong Kong...
September 12, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28890369/selenium-incorporated-guar-gum-nanoparticles-safeguards-mitochondrial-bioenergetics-during-ischemia-reperfusion-injury-in-h9c2-cardiac-cells
#15
R S Soumya, Prathapan Ayyappan, P Salin Raj, V P Vineetha, K G Raghu
The application of nanotechnology has created high impact in diagnosis and prognosis of various disorders including cardiovascular diseases. In the present study, we investigated the beneficial effect of selenium incorporated guar gum nanoparticles (SGG) compared to nascent selenium (Se) and guar gum nanoparticle (GGN) against ischemia-reperfusion induced alterations in oxidative phosphorylation and energy metabolism in H9c2 cardiac cells. Ischemia and reperfusion were induced for 1h. The alterations in activities of various complexes (complex 1, II, III and IV) of mitochondrial electron transport chain (ETC), aconitase activity, oxygen consumption rate, and the ATP content were seen...
September 7, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28888435/resuscitation-and-growth-kinetics-of-sub-lethally-injured-listeria-monocytogenes-strains-following-fluorescence-activated-cell-sorting-facs
#16
Thulani Sibanda, Elna M Buys
This study investigated the effect of acid (pH4.2), osmotic (10% NaCl) and heat (55°C for 30min) stress induced injury on Listeria monocytogenes strains ATCC19115, 69, 159/10 and 243 using differential plating and flow cytometry coupled with membrane integrity indicators, thiazole orange (TO) and propidium iodide (PI) staining. Growth kinetics of injured cells sorted by fluorescence activated cell sorting (FACS) were studied at 4, 25 and 37°C. The percentage of cell injury detectable by both flow cytometry and differential plating varied significantly among strains and stress treatments (p<0...
October 2017: Food Research International
https://www.readbyqxmd.com/read/28887852/cd8-lineage-dendritic-cells-determine-adaptive-immune-responses-to-inflammasome-activation-upon-sterile-skin-injury
#17
Rituparna Chakraborty, Janin Chandra, Shuai Cui, Lynn Tolley, Matthew A Cooper, Mark Kendall, Ian H Frazer
The molecular links between sterile inflammation and induction of adaptive immunity have not been fully identified. Here, we examine how damage associated molecular patterns (DAMPs), as opposed to pathogen associated molecules (PAMPs), regulates the immune response to non-self-antigens presented at the site of the physical injury. Heat applied briefly to the skin invokes sterile inflammation, characterised by local cell death and caspase-1 activation without demonstrably disrupting skin integrity. Co-delivery of ovalbumin (OVA) with heat injury induces OVA-specific CD8(+) T cell responses and this is dependent on caspase-1 activation and MyD88 signalling...
September 8, 2017: Experimental Dermatology
https://www.readbyqxmd.com/read/28887672/the-impact-of-sustained-hot-weather-on-risk-of-acute-work-related-injury-in-melbourne-australia
#18
Judith Anne McInnes, Ewan M MacFarlane, Malcolm R Sim, Peter Smith
It has been reported that weather-related high ambient temperature is associated with an increased risk of work-related injury. Understanding this relationship is important because work-related injuries are a major public health problem, and because projected climate changes will potentially expose workers to hot days, including consecutive hot days, more often. The aim of this study was to quantify the impact of exposure to sustained periods of hot weather on work-related injury risk for workers in Melbourne, Australia...
September 8, 2017: International Journal of Biometeorology
https://www.readbyqxmd.com/read/28887033/long-term-exposure-to-pm2-5-lowers-influenza-virus-resistance-via-down-regulating-pulmonary-macrophage-kdm6a-and-mediates-histones-modification-in-il-6-and-ifn-%C3%AE-promoter-regions
#19
Jing-Hui Ma, Shao-Hua Song, Meng Guo, Ji Zhou, Fang Liu, Li Peng, Zhi-Ren Fu
Atmospheric particulates, especially PM2.5, not only damage the respiratory system, but also play important roles in pulmonary immunity. China is influenced by atmospheric diffusion conditions, industrial manufacturers, and heating and discharging. PM2.5 levels in the air rise substantially in the winter, which is also a period of flu high-incidence. Although an epidemiological link exists between PM2.5 and flu, we do not understand how long-term PM2.5 inhalation affects pulmonary immunity and the influenza virus response...
September 5, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28885960/international-classification-of-disease-coding-of-exertional-heat-illness-in-u-s-army-soldiers
#20
David W DeGroot, Gordon Mok, Nathanael E Hathaway
INTRODUCTION: The severity of exertional heat illnesses (EHI) ranges from relatively minor heat exhaustion to potentially life-threatening heat stroke. Epidemiological surveillance of the types of and trends in EHI incidence depends on application of the appropriate International Classification of Disease, 9th Revision (ICD-9) diagnostic code. However, data examining whether the appropriate EHI ICD-9 code is selected are lacking. The purpose of this study was to determine whether the appropriate ICD-9 code is selected in a cohort of EHI casualties...
September 2017: Military Medicine
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