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https://www.readbyqxmd.com/read/29346277/vaccinia-virus-in-blood-samples-of-humans-domestic-and-wild-mammals-in-brazil
#1
Marina G Peres, Thais S Bacchiega, Camila M Appolinário, Acácia F Vicente, Mateus de Souza Ribeiro Mioni, Bruna L D Ribeiro, Clóvis R S Fonseca, Vanessa C Pelícia, Fernando Ferreira, Graziele P Oliveira, Jonatas S Abrahão, Jane Megid
Outbreaks of Vaccinia virus (VACV) affecting cattle and humans have been reported in Brazil in the last 15 years, but the origin of outbreaks remains unknown. Although VACV DNA have been already detected in mice (Mus musculus), opossums (Didelphis albiventris) and dogs during VACV zoonotic outbreaks, no transmission to cattle or humans from any of these were reported during Brazilian outbreaks. In this work, we assessed the PCR positivity to VACV in blood samples of cows and other domestic mammals, wild rodents and other wild mammals, and humans from areas with or without VACV infection reports...
January 18, 2018: Viruses
https://www.readbyqxmd.com/read/29345464/whole-egg-consumption-exerts-a-nephroprotective-effect-in-an-acute-rodent-model-of-type-1-diabetes
#2
Cassondra J Saande, Samantha K Jones, Matthew J Rowling, Kevin L Schalinske
Nephropathy is a well-characterized complication of type 1 diabetes (T1D), resulting in proteinuria and urinary loss of micronutrients. We previously found that a whole egg-based diet maintained vitamin D balance in type 2 diabetic rats despite excessive urinary losses due to nephropathy. The goal of this study was to investigate the impact of whole egg consumption in T1D rats. Sprague-Dawley rats were randomly assigned to T1D or nondiabetic control groups and fed a casein or whole egg-based diet for 32 days...
January 18, 2018: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29345369/memory-b-cell-heterogeneity-remembrance-of-things-past
#3
REVIEW
Gretchen Harms Pritchard, Marion Pepper
B cells that persist for long periods of time after antigen encounter exist as either antibody-producing plasma cells (long-lived plasma cells, LLPCs) that reside primarily in the bone marrow or rapidly responsive memory B cells (MBCs) that reside in the spleen and circulation. Although LLPCs are thought to be non-responsive to a secondary infection, MBCs respond to subsequent infection through the production of antibody-secreting cells, formation of new germinal centers (GCs), and repopulation of the memory pool...
January 17, 2018: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/29344868/laser-capture-microdissection-for-the-analysis-of-rat-and-human-spinal-cord-ependyma-by-qpcr
#4
Daniel Garcia-Ovejero, Beatriz Paniagua-Torija, Angel Arevalo-Martin, Beatriz Navarro-Galve, Eduardo Molina-Holgado
In the last few decades many efforts have been dedicated to decipher the nature and regenerative potential of neurogenic niches and endogenous stem cells after damage of the central nervous system. In the spinal cord, it has been largely focused on the ependymal region, which hosts neural precursors/stem cells (NSC) in rodents but differs between species and ages. In the current chapter, we detail our protocol to study the gene expression profile of this region using fresh frozen blocks of rat and human post-mortem spinal cords...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29344866/immuno-guided-laser-capture-microdissection-of-glial-cells-for-mrna-analysis
#5
Arnaud B Nicot, Justine Rambeau, Flora Guillot, Alexandra Garcia, David A Laplaud
Laser-capture microdissection (LCM) allows for retrieval of specific cell populations in situ. By combining immunofluorescent labeling with LCM, mRNAs can be probed by qRT-PCR for determining in situ gene expression during health and disease. This approach permits obtaining and analyzing histologically enriched cell populations in a tissue that can be hardly obtained from other methods such as white matter astrocytes from rodents or any individual cell population from archival human or rodent brain tissues...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29344854/laser-microdissection-workflow-for-isolating-nucleic-acids-from-fixed-and-frozen-tissue-samples
#6
Yelena G Golubeva, Andrew C Warner
Laser Capture Microdissection has earned a permanent place among modern techniques connecting histology and molecular biology. Laser Capture Microdissection has become an invaluable tool in medical research as a means for collection of specific cell populations isolated from their environment. Such genomic sample enrichment dramatically increases the sensitivity and precision of downstream molecular assays used for biomarker discovery, monitoring disease onset and progression, and in the development of personalized medicine...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29344671/role-of-mir-34c-in-the-cognitive-function-of-epileptic-rats-induced-by-pentylenetetrazol
#7
Yiqing Huang, Xixia Liu, Yuhan Liao, Yayun Liao, Donghua Zou, Xing Wei, Qi Huang, Yuan Wu
Studies suggest that microRNA (miR)‑34c may serve a role in cognitive function in rodent and primate groups. A previous study demonstrated an increase in miR‑34c expression in chronic epileptic rats with memory disorders, induced by pentylenetetrazol (PTZ). However, the mechanism underlying the effects of miR‑34c on cognitive function in epileptic rats remains unclear. Therefore, the present study investigated alterations in cognitive function in temporal lobe epileptic rats, induced by repeated injections of PTZ, following treatment with an miR‑34c agomir compared with a scramble group...
January 17, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29344328/management-of-functional-dyspepsia-state-of-the-art-and-emerging-therapies
#8
REVIEW
Hiroshi Yamawaki, Seiji Futagami, Mako Wakabayashi, Noriko Sakasegawa, Shuhei Agawa, Kazutoshi Higuchi, Yasuhiro Kodaka, Katsuhiko Iwakiri
Patients with functional dyspepsia, defined in the 2016 Rome IV criteria as bothersome clinical dyspepsia symptoms, experience markedly reduced quality of life. Several etiologies have been associated with the disorder. In the Rome IV criteria, the brain-gut axis was acknowledged as an important factor in the etiology of functional gastrointestinal (GI) disorders. The distinct subgroups of functional dyspepsia, epigastric pain syndrome (EPS) and postprandial distress syndrome (PDS), are treated differently: acid secretion inhibitors are recommended with patients with EPS, whereas prokinetic drugs as mosapride and acotiamide are recommended for patients with PDS...
January 2018: Therapeutic Advances in Chronic Disease
https://www.readbyqxmd.com/read/29343749/testosterone-boosts-physical-activity-in-male-mice-via-dopaminergic-pathways
#9
Ferran Jardí, Michaël R Laurent, Nari Kim, Rougin Khalil, Dimitri De Bundel, Ann Van Eeckhaut, Lawrence Van Helleputte, Ludo Deboel, Vanessa Dubois, Dieter Schollaert, Brigitte Decallonne, Geert Carmeliet, Ludo Van den Bosch, Rudi D'Hooge, Frank Claessens, Dirk Vanderschueren
Low testosterone (T) in men, especially its free fraction, has been associated with loss of energy. In accordance, orchidectomy (ORX) in rodents results in decreased physical activity. Still, the mechanisms through which T stimulates activity remain mostly obscure. Here, we studied voluntary wheel running behavior in three different mouse models of androgen deficiency: ORX, androgen receptor (AR) knock-out (ARKO) and sex hormone binding globulin (SHBG)-transgenic mice, a novel mouse model of "low free T". Our results clearly show a fast and dramatic action of T stimulating wheel running, which is not explained by its action on muscle, as evidenced by neuromuscular studies and in a muscle-specific conditional ARKO mouse model...
January 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29343624/inhalation-of-peptide-loaded-nanoparticles-improves-heart-failure
#10
Michele Miragoli, Paola Ceriotti, Michele Iafisco, Marco Vacchiano, Nicolò Salvarani, Alessio Alogna, Pierluigi Carullo, Gloria Belén Ramirez-Rodríguez, Tatiana Patrício, Lorenzo Degli Esposti, Francesca Rossi, Francesca Ravanetti, Silvana Pinelli, Rossella Alinovi, Marco Erreni, Stefano Rossi, Gianluigi Condorelli, Heiner Post, Anna Tampieri, Daniele Catalucci
Peptides are highly selective and efficacious for the treatment of cardiovascular and other diseases. However, it is currently not possible to administer peptides for cardiac-targeting therapy via a noninvasive procedure, thus representing scientific and technological challenges. We demonstrate that inhalation of small (<50 nm in diameter) biocompatible and biodegradable calcium phosphate nanoparticles (CaPs) allows for rapid translocation of CaPs from the pulmonary tree to the bloodstream and to the myocardium, where their cargo is quickly released...
January 17, 2018: Science Translational Medicine
https://www.readbyqxmd.com/read/29342874/rodent-models-of-alcoholic-liver-disease-role-of-binge-ethanol-administration
#11
REVIEW
Shubha Ghosh Dastidar, Jeffrey B Warner, Dennis R Warner, Craig J McClain, Irina A Kirpich
Both chronic and acute (binge) alcohol drinking are important health and economic concerns worldwide and prominent risk factors for the development of alcoholic liver disease (ALD). There are no FDA-approved medications to prevent or to treat any stage of ALD. Therefore, discovery of novel therapeutic strategies remains a critical need for patients with ALD. Relevant experimental animal models that simulate human drinking patterns and mimic the spectrum and severity of alcohol-induced liver pathology in humans are critical to our ability to identify new mechanisms and therapeutic targets...
January 13, 2018: Biomolecules
https://www.readbyqxmd.com/read/29342146/a-theory-of-how-active-behavior-stabilises-neural-activity-neural-gain-modulation-by-closed-loop-environmental-feedback
#12
Christopher L Buckley, Taro Toyoizumi
During active behaviours like running, swimming, whisking or sniffing, motor actions shape sensory input and sensory percepts guide future motor commands. Ongoing cycles of sensory and motor processing constitute a closed-loop feedback system which is central to motor control and, it has been argued, for perceptual processes. This closed-loop feedback is mediated by brainwide neural circuits but how the presence of feedback signals impacts on the dynamics and function of neurons is not well understood. Here we present a simple theory suggesting that closed-loop feedback between the brain/body/environment can modulate neural gain and, consequently, change endogenous neural fluctuations and responses to sensory input...
January 17, 2018: PLoS Computational Biology
https://www.readbyqxmd.com/read/29341898/induction-of-alpha-synuclein-pathology-in-the-enteric-nervous-system-of-the-rat-and-non-human-primate-results-in-gastrointestinal-dysmotility-and-transient-cns-pathology
#13
Fredric P Manfredsson, Kelvin C Luk, Matthew J Benskey, Aysegul Guezer, Joanna Garcia, Nathan C Kuhn, Ivette M Sandoval, Joseph R Patterson, Alana O'Mara, Reid Yonkers, Jeffrey H Kordower
Alpha-Synuclein (α-syn) is by far the most highly vetted pathogenic and therapeutic target in Parkinson's disease. Aggregated α-syn is present in sporadic Parkinson's disease, both in the central nervous system (CNS) and peripheral nervous system (PNS). The enteric division of the PNS is of particular interest because 1) gastric dysfunction is a key clinical manifestation of Parkinson's disease, and 2) Lewy pathology in myenteric and submucosal neurons of the enteric nervous system (ENS) has been referred to as stage zero in the Braak pathological staging of Parkinson's disease...
January 13, 2018: Neurobiology of Disease
https://www.readbyqxmd.com/read/29341115/non-volant-mammals-from-the-upper-paran%C3%A3-river-basin-a-data-set-from-a-critical-region-for-conservation-in-brazil
#14
Fernando Gonçalves, Wellington Hannibal, Mauricio N Godoi, Fernando I Martins, Roniel F Oliveira, Valquiria V Figueiredo, Janaina Casella, Érica F G G de Sá
The data set represents the first attempt at a large-scale inventory of non-volant mammals, with potential applications to performing macroecological studies, developing conservation strategies, and undertaking population and community ecology research, but also to evaluate the ecological consequences of fragmentation and defaunation. Our objectives for compiling these data were to summarize information about inventories of non-volant mammals in the critically important area of the Upper Paraná River Basin by focusing on species richness and index of frequency of occurrence and to identify gaps in knowledge regarding non-volant mammal communities in order to guide future sampling efforts...
January 17, 2018: Ecology
https://www.readbyqxmd.com/read/29341109/the-prescribable-drugs-with-efficacy-in-experimental-epilepsies-pde3-database-for-drug-repurposing-research-in-epilepsy
#15
Shayeeshan Sivapalarajah, Mathangi Krishnakumar, Harry Bickerstaffe, YikYing Chan, Joseph Clarkson, Alistair Hampden-Martin, Ahmad Mirza, Matthew Tanti, Anthony Marson, Munir Pirmohamed, Nasir Mirza
OBJECTIVE: Current antiepileptic drugs (AEDs) have several shortcomings. For example, they fail to control seizures in 30% of patients. Hence, there is a need to identify new AEDs. Drug repurposing is the discovery of new indications for approved drugs. This drug "recycling" offers the potential of significant savings in the time and cost of drug development. Many drugs licensed for other indications exhibit antiepileptic efficacy in animal models. Our aim was to create a database of "prescribable" drugs, approved for other conditions, with published evidence of efficacy in animal models of epilepsy, and to collate data that would assist in choosing the most promising candidates for drug repurposing...
January 17, 2018: Epilepsia
https://www.readbyqxmd.com/read/29341019/mri-in-the-study-of-animal-models-of-neurodegenerative-diseases
#16
Nyoman D Kurniawan
Magnetic Resonance Imaging (MRI) is an important tool to study various animal models of degenerative diseases. This chapter describes routine protocols of T 1-, T 2-, and T 2*-weighted and diffusion-weighted MRI for rodent brain and spinal cord. These protocols can be used to measure atrophy, axonal and myelin injury and changes in white matter connectivity.
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29341013/rodent-abdominal-adipose-tissue-imaging-by-mr
#17
Bhanu Prakash Kn, Jadegoud Yaligar, Sanjay K Verma, Venkatesh Gopalan, S Sendhil Velan
Rodents including rats and mice are important models to study obesity, diabetes, and metabolic syndrome in a preclinical setting. Translational and longitudinal imaging of these rodents permit investigation of metabolic diseases and identification of imaging biomarkers suitable for clinical translation. Here we describe the imaging protocols for achieving quantitative abdominal imaging in small animals followed by segmentation and quantification of fat volumes.
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29341011/susceptibility-weighted-mri-in-rodents-at-9-4-t
#18
Ferdinand Schweser, Marilena Preda, Robert Zivadinov
Susceptibility Weighted Imaging (SWI) is an established part of the clinical neuroimaging toolbox and, since its inception, has also successfully been used in various preclinical studies. Exploiting the effect of variations of magnetic susceptibility between different tissues on the externally applied, static, homogeneous magnetic field, the method visualizes venous vasculature, hemorrhages and blood degradation products, calcifications, and tissue iron deposits. The chapter describes in vivo and ex vivo protocols for preclinical SWI in rodents...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29341010/1h-spectroscopic-imaging-of-the-rodent-brain
#19
Rui V Simões, Emma Muñoz-Moreno, Raúl Tudela, Guadalupe Soria
Proton MR spectroscopic imaging (MRSI) can provide a variety of "molecular images" from animal models of human disease, which are useful for different research purposes. This chapter describes a protocol for in vivo acquisition and analysis of MRSI data from the rodent brain.
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29341009/in-vivo-heteronuclear-magnetic-resonance-spectroscopy
#20
Blanca Lizarbe, Antoine Cherix, Rolf Gruetter
Magnetic Resonance Spectroscopy is a technique that has the capability of measuring metabolites in vivo and, in appropriate conditions, to infer its metabolic rates. The success of MRS depends a lot on its sensitivity, which limits the usage of X-nuclei MRS. However, technological developments and refinements in methods have made in vivo heteronuclear MRS possible in humans and in small animals. This chapter provides detailed descriptions of the main procedures needed to perform successful in vivo heteronuclear MRS experiments, with a particular focus on experimental setup in 13C MRS experiments in rodents...
2018: Methods in Molecular Biology
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