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https://www.readbyqxmd.com/read/28823120/deoxynivalenol-and-zearalenone-contaminated-feeds-alter-gene-expression-profiles-in-the-livers-of-piglets
#1
Kondreddy Eswar Reddy, Jin Young Jeong, Yookyung Lee, Hyun-Jeong Lee, Min Seok Kim, Dong-Wook Kim, Hyun Jung Jung, Changyong Choe, Young Kyoon Oh, Sung Dae Lee
Objective: The Fusarium mycotoxins of deoxynivalenol (DON) and zerolenone (ZEN) cause health hazards for both humans and farm animals. Therefore, the main intention of this study was to reveal DON and ZEN effects on the mRNA expression of pro-inflammatory cytokines and other immune related genes in the liver of piglets. Methods: In the present study, 15 six-week-old piglets were randomly assigned to the following three different dietary treatments for 4 weeks: control diet, diet containing 8 mg DON/kg feed, and diet containing 0...
August 16, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28822816/genetically-modified-rabies-virus-vectored-ebola-virus-disease-vaccines-are-safe-and-induce-efficacious-immune-responses-in-mice-and-dogs
#2
Lei Shuai, Xijun Wang, Zhiyuan Wen, Jinying Ge, Jinliang Wang, Dandan Zhao, Zhigao Bu
Ebola viruses (EBOVs) are zoonotic pathogens that cause EBOV disease (EVD) with high case fatality in humans. Currently, EVD vaccines are still under development in several countries. Here, we generated two recombinant rabies viruses (RABVs), rERAG333E/ZGP and rERAG333E/SGP, expressing the Zaire EBOV glycoprotein (ZGP) or Sudan EBOV glycoprotein (SGP) gene based on a modified ERA vaccine strain (rERAG333E) vector platform. The recombinant RABVs retained growth properties similar to those of the vector virus in BSR cell culture and efficiently expressed ZGP or SGP...
August 16, 2017: Antiviral Research
https://www.readbyqxmd.com/read/28822806/pericardial-adipose-and-aromatase-a-new-translational-target-for-aging-obesity-and-arrhythmogenesis
#3
Gabriel B Bernasochi, Wah Chin Boon, Claire L Curl, Upasna Varma, Salvatore Pepe, Marianne Tare, Laura J Parry, Evdokia Dimitriadis, Stephen B Harrap, Chrishan J Nalliah, Jonathan M Kalman, Lea M D Delbridge, James R Bell
A correlation exists between the extent of pericardial adipose and atrial fibrillation (AF) risk, though the underlying mechanisms remain unclear. Selected adipose depots express high levels of aromatase, capable of converting androgens to estrogens - no studies have investigated aromatase occurrence/expression regulation in pericardial adipose. The Women's Health Initiative reported that estrogen-only therapy in women elevated AF incidence, indicating augmented estrogenic influence may exacerbate cardiac vulnerability...
August 16, 2017: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/28822742/strategy-set-shifting-and-response-inhibition-in-adult-rats-exposed-to-an-environmental-polychlorinated-biphenyl-mixture-during-adolescence
#4
Supida Monaikul, Paul Eubig, Stan Floresco, Susan Schantz
Converging evidence from studies with animal models and humans suggests that early developmental exposure to polychlorinated biphenyls (PCBs) leads to deficits in cognitive flexibility and inhibitory control. These processes are mediated to a large extent by the prefrontal cortex, thus we examined the effects of PCB exposure during adolescence-a period of robust prefrontal cortical development-on both processes. Specifically, we used operant set-shifting and differential reinforcement of low rates of responding (DRL) tasks to assess cognitive flexibility and response inhibition, respectively...
August 16, 2017: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/28822723/effect-of-religious-belief-on-selecting-of-graft-materials-used-in-oral-and-maxillofacial-surgery
#5
Zeynep Güngörmüş, Metin Güngörmüş
PURPOSE: Various graft materials, such as synthetic and biological products, are used routinely in maxillofacial surgery. These materials are usually derived from porcine, bovine, and human tissues; some religious beliefs forbid the dietary use of substances from certain animal sources. The aim of this study was to evaluate the effect of religious belief on selecting different graft types used in maxillofacial surgery. MATERIALS AND METHODS: In total, 203 participants were included in this survey...
July 25, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28822691/fatal-meningitis-in-swine-after-intrathecal-administration-of-adeno-associated-virus-expressing-syngeneic-interleukin-10
#6
Mark D Unger, Josef Pleticha, James E Collins, Anibal G Armien, Jennifer L Brazzell, Laura K Newman, Lukas F Heilmann, Jodi A Scholz, Timothy P Maus, Andreas S Beutler
Interleukin-10 (IL-10) delivered by intrathecal (i.t.) gene vectors is a candidate investigational new drug (IND) for several chronic neurological disorders such as neuropathic pain. We performed a preclinical safety study of IL-10. A syngeneic large animal model was used delivering porcine IL-10 (pIL-10) to the i.t. space in swine by adeno-associated virus serotype 8 (AAV8), a gene vector that was previously found to be nontoxic in the i.t. space. Unexpectedly, animals became ill, developing ataxia, seizures, and an inability to feed and drink, and required euthanasia...
August 1, 2017: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/28822354/3d-brain-organoids-derived-from-pluripotent-stem-cells-promising-experimental-models-for-brain-development-and-neurodegenerative-disorders
#7
REVIEW
Chun-Ting Lee, Raphael M Bendriem, Wells W Wu, Rong-Fong Shen
Three-dimensional (3D) brain organoids derived from human pluripotent stem cells (hPSCs), including embryonic stem cells (ESCs) and induced pluripotent stem cells (iPSCs), appear to recapitulate the brain's 3D cytoarchitectural arrangement and provide new opportunities to explore disease pathogenesis in the human brain. Human iPSC (hiPSC) reprogramming methods, combined with 3D brain organoid tools, may allow patient-derived organoids to serve as a preclinical platform to bridge the translational gap between animal models and human clinical trials...
August 20, 2017: Journal of Biomedical Science
https://www.readbyqxmd.com/read/28822233/obese-fathers-lead-to-an-altered-metabolism-and-obesity-in-their-children-in-adulthood-review-of-experimental-and-human-studies
#8
REVIEW
Fernanda Ornellas, Priscila V Carapeto, Carlos A Mandarim-de-Lacerda, Marcia B Aguila
OBJECTIVE: To discuss the recent literature on paternal obesity, focusing on the possible mechanisms of transmission of the phenotypes from the father to the children. SOURCES: A non-systematic review in the PubMed database found few publications in which paternal obesity was implicated in the adverse transmission of characteristics to offspring. Specific articles on epigenetics were also evaluated. As the subject is recent and still controversial, all articles were considered regardless of year of publication...
August 16, 2017: Jornal de Pediatria
https://www.readbyqxmd.com/read/28822091/effect-of-ap102-a-subtype-2-and-5-specific-somatostatin-analog-on-glucose-metabolism-in-rats
#9
Erika Tarasco, Petra Seebeck, Svende Pfundstein, Adrian F Daly, Philippe J Eugster, Alan G Harris, Eric Grouzmann, Thomas A Lutz, Christina N Boyle
PURPOSE: Somatostatin analogs are widely used to treat conditions associated with hormonal hypersecretion such as acromegaly and metastatic neuroendocrine tumors. First generation somatostatin analogs, such as octreotide and lanreotide, have high affinity for somatostatin receptor subtype 2 (SSTR2), but have incomplete efficacy in many patients. Pasireotide targets multiple SSTRs, having the highest affinity for SSTR5, but causes hyperglycemia and diabetes mellitus in preclinical and clinical studies...
August 18, 2017: Endocrine
https://www.readbyqxmd.com/read/28822066/do-evolutionary-changes-in-astrocytes-contribute-to-the-computational-power-of-the-hominid-brain
#10
Nancy Ann Oberheim Bush, Maiken Nedergaard
It is now well accepted that astrocytes are essential in all major nervous system functions of the rodent brain, including neurotransmission, energy metabolism, modulation of blood flow, ion and water homeostasis, and, indeed, higher cognitive functions, although the contribution of astrocytes in cognition is still in early stages of study. Here we review the most current research findings on human astrocytes, including their structure, molecular characterization, and functional properties. We also highlight novel tools that have been established for translational approaches to the comparative study of astrocytes from humans and experimental animals...
August 19, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/28821833/microrna-449c-5p-inhibits-osteogenic-differentiation-of-human-vics-through-smad4-mediated-pathway
#11
Rongjian Xu, Min Zhao, Yun Yang, Zhuo Huang, Chunying Shi, Xianglin Hou, Yannan Zhao, Bing Chen, Zhifeng Xiao, Jianzhou Liu, Qi Miao, Jianwu Dai
Calcific aortic valve disease (CAVD) is the most common heart valve disorder, yet its mechanism remains poorly understood. Valve interstitial cells (VICs) are the prevalent cells in aortic valve and their osteogenic differentiation may be responsible for calcific nodule formation in CAVD pathogenesis. Emerging evidence shows microRNA (miRNA, or miR) can function as important regulators of many pathological processes, including osteogenic differentiation. Here, we aimed to explore the function of miR-449c-5p in CAVD pathogenesis...
August 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28821732/light-color-importance-for-circadian-entrainment-in-a-diurnal-octodon-degus-and-a-nocturnal-rattus-norvegicus-rodent
#12
Maria Angeles Bonmati-Carrion, Beatriz Baño-Otalora, Juan Antonio Madrid, Maria Angeles Rol
The central circadian pacemaker (Suprachiasmatic Nuclei, SCN) maintains the phase relationship with the external world thanks to the light/dark cycle. Light intensity, spectra, and timing are important for SCN synchronisation. Exposure to blue-light at night leads to circadian misalignment that could be avoided by using less circadian-disruptive wavelengths. This study tests the capacity of a diurnal Octodon degus and nocturnal Rattus norvegicus to synchronise to different nocturnal lights. Animals were subjected to combined red-green-blue lights (RGB) during the day and to: darkness; red light (R); combined red-green LED (RG) lights; and combined red-green-violet LED (RGV) lights during the night...
August 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28821661/attenuated-activity-across-multiple-cell-types-and-reduced-monosynaptic-connectivity-in-the-aged-perirhinal-cortex
#13
A P Maurer, S N Burke, K Diba, C A Barnes
The perirhinal cortex (PER), which is critical for associative memory and stimulus discrimination, has been described as a wall of inhibition between the neocortex and hippocampus. With advanced age, rats show deficits on PER-dependent behavioral tasks and fewer PER principal neurons are activated by stimuli, but the role of PER interneurons in these altered circuit properties in old age has not been characterized. In the present study, PER neurons were recorded while rats traversed a circular track bi-directionally in which the track was either empty or contained 8 novel objects evenly spaced around the track...
August 11, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28821400/alzheimer-s-disease-as-oligomeropathy
#14
REVIEW
Kenjiro Ono
Alzheimer's disease (AD) is the most common age-related neurodegenerative disorder and is characterized by pathological aggregates of amyloid β-protein (Aβ) and tau protein. On the basis of genetic evidence, biochemical data, and animal models, Aβ has been suggested to be responsible for the pathogenesis of AD (the amyloid hypothesis). Aβ molecules tend to aggregate to form oligomers, protofibrils, and mature fibrils. Although mature fibrils in the final stage have been thought to be the cause of AD pathogenesis, recent studies using synthetic Aβ peptides, a cell culture model, Aβ precursor protein transgenic mice models, and human samples, such as cerebrospinal fluids and postmortem brains of AD patients, suggest that pre-fibrillar forms (oligomers of Aβ) are more deleterious than are extracellular fibril forms...
August 16, 2017: Neurochemistry International
https://www.readbyqxmd.com/read/28821352/towards-optimisation-of-induced-pluripotent-cell-culture-extracellular-acidification-results-in-growth-arrest-of-ipsc-prior-to-nutrient-exhaustion
#15
Anja Wilmes, Caroline Rauch, Giada Carta, Georg Kern, Florian Meier, Wilfried Posch, Doris Wilflingseder, Lyle Armstrong, Majlinda Lako, Mario Beilmann, Gerhard Gstraunthaler, Paul Jennings
Human induced pluripotent stem cells (iPSC) have the potential to radically reduce the number of animals used in both toxicological science and disease elucidation. One initial obstacle culturing iPSC is that they require daily medium exchange. This study attempts to clarify why and propose some practical solutions. Two iPSC lineages were fed at different intervals in a full growth area (FGA) or a restricted growth area (RGA). The FGA consisted of a well coated with Matrigel™ and the RGA consisted of a coated coverslip placed in a well...
August 15, 2017: Toxicology in Vitro: An International Journal Published in Association with BIBRA
https://www.readbyqxmd.com/read/28821313/the-influence-of-the-position-of-palmitate-in-infant-formula-triacylglycerols-on-health-outcomes
#16
REVIEW
Elizabeth A Miles, Philip C Calder
The purpose of this review is to discuss recent studies reporting on the influence of the position of palmitic acid in triacylglycerols in infant formula and relevant animal studies. Earlier experiments in rodents show that a diet with a higher proportion of palmitate at the sn-2 position of triacylglycerols improves dietary fat and calcium absorption compared with a diet with a lower sn-2 palmitate content. A high-sn-2 palmitate diet increased fecal short-chain fatty acids, reduced gut inflammation in a colitis model, and altered tissue endocannabinoid concentrations in laboratory rodents...
August 2017: Nutrition Research
https://www.readbyqxmd.com/read/28821305/establishment-of-a-decaplex-pcr-capillary-gel-electrophoresis-method-for-the-simultaneous-detection-of-six-kinds-of-genetically-modified-animals
#17
Xiaofei Liu, Songyin Qiu, Xiaolin Li, Dandan Liu, Hongli Jing, Qin Wang, Xiangmei Lin, Dengke Pan, Ningning Shi
This study aimed to establish an event-specific multiplex PCR system using microsatellite markers and fluorescently labeled primers to detect six different genetically modified (GM) animal lines, including human lactoferrin GM cattle, human lysozyme GM cattle, human α-lactalbumin GM cattle, myostatin knockout pigs, phytase GM pigs, and ω-3 fatty acid desaturase gene GM pigs. Four different microsatellite loci for species identification, along with six GM animal-specific fragments, were selected as targets for primer design...
August 18, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/28821267/small-size-recombinant-adenoviral-hexon-protein-fragments-for-the-production-of-virus-type-specific-antibodies
#18
Martin Pacesa, Rodinde Hendrickx, Manuela Bieri, Justin W Flatt, Urs F Greber, Silvio Hemmi
BACKGROUND: Adenoviruses are common pathogens infecting animals and humans. They are classified based on serology, or genome sequence information. These methods have limitations due to lengthy procedures or lack of infectivity data. Adenoviruses are easy to produce and amenable to genetic and biochemical modifications, which makes them a powerful tool for biological studies, and clinical gene-delivery and vaccine applications. Antibodies directed against adenoviral proteins are important diagnostic tools for virus identification in vivo and in vitro, and are used to elucidate infection mechanisms, often in combination with genomic sequencing and type specific information from hyper-variable regions of structural proteins...
August 18, 2017: Virology Journal
https://www.readbyqxmd.com/read/28821259/the-effect-of-storage-at-ambient-temperature-on-the-feline-fecal-microbiota
#19
Moran Tal, Adronie Verbrugghe, Diego E Gomez, Charlotte Chau, J Scott Weese
BACKGROUND: Feline fecal microbiota analyses can potentially be impacted by a variety of factors such as sample preparation, sequencing method and bioinformatics analyses. Another potential influence is changes in the microbiota from storage of samples prior to processing. This study examined the effect of ambient temperature exposure on the feline fecal microbiota composition. Fecal samples were collected from 12 healthy cats, within 15 min after defecation. Samples were aliquoted and the first aliquot was frozen at -80 °C within 1 hour of defecation...
August 18, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28821241/genetic-diversity-and-virulence-potential-of-clinical-and-environmental-aeromonas-spp-isolates-from-a-diarrhea-outbreak
#20
Lívia Christina Alves da Silva, Tereza Cristina Leal-Balbino, Beatriz Souza Toscano de Melo, Carina Lucena Mendes-Marques, Antonio Mauro Rezende, Alzira Maria Paiva de Almeida, Nilma Cintra Leal
BACKGROUND: Aeromonas spp. are gram-negative bacteria that can cause a variety of infections in both humans and animals and play a controversial role in diarrhea outbreaks. Our aim was to identify clinical and environmental Aeromonas isolates associated with a cholera outbreak in a northeast county of Brazil at the species level. We also aimed to determine the genetic structure of the bacterial population and the virulence potential of the Aeromonas isolates. METHODS AND RESULTS: Analysis based on concatenated sequences of the 16S rRNA and gyrB genes suggested the classification of the 119 isolates studied into the following species: A...
August 18, 2017: BMC Microbiology
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