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https://www.readbyqxmd.com/read/29342236/magnamwar-an-r-package-for-genome-wide-association-studies-of-bacterial-orthologs
#1
Corinne E Sexton, Hayden Z Smith, Peter D Newell, Angela E Douglas, John M Chaston
Summary: Here we report on an R package for genome-wide association studies of orthologous genes in bacteria. Before using the software, orthologs from bacterial genomes or metagenomes are defined using local or online implementations of OrthoMCL. These presence-absence patterns are statistically associated with variation in user-collected phenotypes using the Mono-Associated GNotobiotic Animals Metagenome-Wide Association R package (MAGNAMWAR). Genotype-phenotype associations can be performed with several different statistical tests based on the type and distribution of the data...
January 12, 2018: Bioinformatics
https://www.readbyqxmd.com/read/29342206/silymarin-prevents-acetaminophen-induced-hepatotoxicity-in-mice
#2
Zuzana Papackova, Marie Heczkova, Helena Dankova, Eva Sticova, Alena Lodererova, Lenka Bartonova, Martin Poruba, Monika Cahova
Acetaminophen or paracetamol (APAP) overdose is a common cause of liver injury. Silymarin (SLM) is a hepatoprotective agent widely used for treating liver injury of different origin. In order to evaluate the possible beneficial effects of SLM, Balb/c mice were pretreated with SLM (100 mg/kg b.wt. per os) once daily for three days. Two hours after the last SLM dose, the mice were administered APAP (300 mg/kg b.wt. i.p.) and killed 6 (T6), 12 (T12) and 24 (T24) hours later. SLM-treated mice exhibited a significant reduction in APAP-induced liver injury, assessed according to AST and ALT release and histological examination...
2018: PloS One
https://www.readbyqxmd.com/read/29342202/cells-containing-aragonite-crystals-mediate-responses-to-gravity-in-trichoplax-adhaerens-placozoa-an-animal-lacking-neurons-and-synapses
#3
Tatiana D Mayorova, Carolyn L Smith, Katherine Hammar, Christine A Winters, Natalia B Pivovarova, Maria A Aronova, Richard D Leapman, Thomas S Reese
Trichoplax adhaerens has only six cell types. The function as well as the structure of crystal cells, the least numerous cell type, presented an enigma. Crystal cells are arrayed around the perimeter of the animal and each contains a birefringent crystal. Crystal cells resemble lithocytes in other animals so we looked for evidence they are gravity sensors. Confocal microscopy showed that their cup-shaped nuclei are oriented toward the edge of the animal, and that the crystal shifts downward under the influence of gravity...
2018: PloS One
https://www.readbyqxmd.com/read/29342175/immunocontraceptive-target-repertoire-defined-by-systematic-identification-of-sperm-membrane-alloantigens-in-a-single-species
#4
Nathaly Cormier, John J McGlone, John Leszyk, Daniel M Hardy
Sperm competence in animal fertilization requires the collective activities of numerous sperm-specific proteins that are typically alloimmunogenic in females. Consequently, sperm membrane alloantigens are potential targets for contraceptives that act by blocking the proteins' functions in gamete interactions. Here we used a targeted proteomics approach to identify the major alloantigens in swine sperm membranes and lipid rafts, and thereby systematically defined the repertoire of these sperm-specific proteins in a single species...
2018: PloS One
https://www.readbyqxmd.com/read/29342167/effects-of-ammonium-based-ionic-liquids-and-2-4-dichlorophenol-on-the-phospholipid-fatty-acid-composition-of-zebrafish-embryos
#5
Aleksandra Piotrowska, Anna Syguda, Bogdan Wyrwas, Lukasz Chrzanowski, Till Luckenbach, Hermann J Heipieper
Ionic liquids consisting of a combination of herbicidal anions with a quaternary ammonium cation act as efficient herbicides, which are under consideration to be used in the agriculture. In the present study, we used embryos of the zebrafish (Danio rerio) as a model to assess the toxic potential of ammonium-based ionic liquids for aquatic organisms. As we assumed interference of the partially hydrophobic ionic liquid cation with lipids, we investigated the adaptation response in the lipid composition of the zebrafish embryos, triggered by the ionic compound...
2018: PloS One
https://www.readbyqxmd.com/read/29342166/effects-of-vitamin-d-on-insulin-resistance-and-myosteatosis-in-diet-induced-obese-mice
#6
Elisa Benetti, Raffaella Mastrocola, Fausto Chiazza, Debora Nigro, Giuseppe D'Antona, Valentina Bordano, Roberto Fantozzi, Manuela Aragno, Massimo Collino, Marco Alessandro Minetto
Epidemiological studies pointed out to a strong association between vitamin D deficiency and type 2 diabetes prevalence. However, the role of vitamin D supplementation in the skeletal muscle, a tissue that play a crucial role in the maintenance of glucose homeostasis, has been scarcely investigated so far. On this basis, this study aimed to evaluate the effect of vitamin D supplementation in a murine model of diet-induced insulin resistance with particular attention to the effects evoked on the skeletal muscle...
2018: PloS One
https://www.readbyqxmd.com/read/29342160/expression-of-the-lux-genes-in-streptococcus-pneumoniae-modulates-pilus-expression-and-virulence
#7
Jenny A Herbert, Andrea M Mitchell, Ryan Ritchie, Jiangtao Ma, Kirsty Ross-Hutchinson, Timothy J Mitchell
Bioluminescence has been harnessed for use in bacterial reporter systems and for in vivo imaging of infection in animal models. Strain Xen35, a bioluminescent derivative of Streptococcus pneumoniae serotype 4 strain TIGR4 was previously constructed for use for in vivo imaging of infections in animal models. We have shown that strain Xen35 is less virulent than its parent TIGR4 and that this is associated with the expression of the genes for bioluminescence. The expression of the luxA-E genes in the pneumococcus reduces virulence and down regulates the expression of the pneumococcal pilus...
2018: PloS One
https://www.readbyqxmd.com/read/29342150/in-vivo-osteoconductivity-of-surface-modified-ti-29nb-13ta-4-6zr-alloy-with-low-dissolution-of-toxic-trace-elements
#8
Eri Takematsu, Kimihiro Noguchi, Kensuke Kuroda, Toshiyuki Ikoma, Mitsuo Niinomi, Nobuhiro Matsushita
Simulated Body Fluid (SBF) has served as a useful standard to check the bioactivity of implant materials for years. However, it is not perfectly able to imitate human serum; sometimes disparities between the SBF test and animal test were confirmed. Therefore, to ensure the reliability of the results of the SBF test obtained from our previous study, an animal study was performed to check osteoconductivity of surface modified implant materials. Three types of solution processes, hydrothermal (H), electrochemical (E), and hydrothermal-electrochemical (HE), were performed on the Ti-29Nb-13Ta-4...
2018: PloS One
https://www.readbyqxmd.com/read/29342142/midbrain-circuits-that-set-locomotor-speed-and-gait-selection
#9
V Caggiano, R Leiras, H Goñi-Erro, D Masini, C Bellardita, J Bouvier, V Caldeira, G Fisone, O Kiehn
Locomotion is a fundamental motor function common to the animal kingdom. It is implemented episodically and adapted to behavioural needs, including exploration, which requires slow locomotion, and escape behaviour, which necessitates faster speeds. The control of these functions originates in brainstem structures, although the neuronal substrate(s) that support them have not yet been elucidated. Here we show in mice that speed and gait selection are controlled by glutamatergic excitatory neurons (GlutNs) segregated in two distinct midbrain nuclei: the cuneiform nucleus (CnF) and the pedunculopontine nucleus (PPN)...
January 17, 2018: Nature
https://www.readbyqxmd.com/read/29342087/sophisticated-fowl-the-complex-behaviour-and-cognitive-skills-of-chickens-and-red-junglefowl
#10
REVIEW
Laura Garnham, Hanne Løvlie
The world's most numerous bird, the domestic chicken, and their wild ancestor, the red junglefowl, have long been used as model species for animal behaviour research. Recently, this research has advanced our understanding of the social behaviour, personality, and cognition of fowl, and demonstrated their sophisticated behaviour and cognitive skills. Here, we overview some of this research, starting with describing research investigating the well-developed senses of fowl, before presenting how socially and cognitively complex they can be...
January 17, 2018: Behavioral Sciences
https://www.readbyqxmd.com/read/29342086/copy-number-variation-in-sox6-contributes-to-chicken-muscle-development
#11
Shudai Lin, Xiran Lin, Zihao Zhang, Mingya Jiang, Yousheng Rao, Qinghua Nie, Xiquan Zhang
Copy number variations (CNVs), which cover many functional genes, are associated with complex diseases, phenotypic diversity and traits that are economically important to raising chickens. The sex-determining region Y-box 6 (Sox6) plays a key role in fast-twitch muscle fiber differentiation of zebrafish and mice, but it is still unknown whether SOX6 plays a role in chicken skeletal muscle development. We identified two copy number polymorphisms (CNPs) which were significantly related to different traits on the genome level in chickens by AccuCopy® and CNVplex® analyses...
January 17, 2018: Genes
https://www.readbyqxmd.com/read/29342071/why-we-should-care-about-the-sex-of-specimens-in-cadaveric-animal-and-cell-based-orthopaedic-research-commentary-on-an-article-by-jessica-bryant-md-et-al-potential-sex-bias-exists-in-orthopaedic-basic-science-and-translational-research
#12
https://www.readbyqxmd.com/read/29342062/potential-sex-bias-exists-in-orthopaedic-basic-science-and-translational-research
#13
Jessica Bryant, Paul Yi, Liane Miller, Kacy Peek, Daniel Lee
BACKGROUND: Potential sex bias has been shown in general surgery basic science and translational research, with unequal representation of male and female specimens. Because basic science research forms the foundation for clinical studies on which patient care is based, it is important that this research equally consider both sexes. The purpose of this study was to determine if potential sex bias exists in the basic science and translational orthopaedic literature. METHODS: A systematic review was conducted of all articles published in 2014 in The Journal of Bone & Joint Surgery, Clinical Orthopaedics and Related Research, The Bone & Joint Journal, and the Journal of Orthopaedic Research (JOR)...
January 17, 2018: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/29341950/clinical-characteristics-of-ulceroglandular-tularemia-in-two-bulgarian-regions-2014-2015-a-report-of-five-cases
#14
Liliya M Pekova, Magdalena P Baymakova, Pavlina O Parousheva, Mariya D Fartunova, Nikolay E Dimitrov, Iskra A Tomova
We present here the first five human cases with tularemia from two regions in South Bulgaria in which there had been no previous report of the infection. The cases occurred over a period of 8 months (December 2014 - August 2015). They were treated at the Department of Infectious Diseases in Stara Zagora University Hospital, Bulgaria. We present the clinical, epidemiological and laboratory data for four men and one woman (age range 52 to 73 years). Three men were hunters, four patients took part in handling, preparing/skinning and cooking the game animals...
December 20, 2017: Folia Medica
https://www.readbyqxmd.com/read/29341948/biochemical-changes-in-experimental-rat-model-of-abdominal-compartment-syndrome
#15
Raina G Ardasheva, Mariana D Argirova, Valentin I Turiiski, Athanas D Krustev
BACKGROUND: Increased intra-abdominal pressure (IAP) causes tissue ischemia, subsequent hypoxia, and impairment of normal tissue metabolism. Elevation of IAP above 20 mmHg leads to progression of abdominal compartment syndrome (ACS) that is associated with organ dysfunction or failure not previously manifested. AIM: To evaluate the eff ects of diff erent grades and time of exposure to IAP on biochemical parameters and oxidative stress in organs aff ected by ischemia using previously developed rat model...
December 20, 2017: Folia Medica
https://www.readbyqxmd.com/read/29341943/beneficial-effect-of-chronic-treatment-with-extracts-from-rhodiola-rosea-l-and-curcuma-longa-l-on-the-immunoreactivity-of-animals-subjected-to-a-chronic-mild-stress-model
#16
Liliya V Vasileva, Kremena Е Saracheva, Mariya V Ivanovska, Atanaska P Petrova, Emir Sucouglu, Mariana A Murdjeva, Damyanka P Getova-Spasova
BACKGROUND: Recent studies have suggested increased levels of pro-inflammatory cytokines in depression. AIM: The present study aimed to evaluate the effect of extracts from Rhodiola and Curcuma on immunoreactivity of animals subjected to a chronic mild stress (CMS) model followed by lipopolysaccharide-induced inflammation. MATERIALS AND METHODS: Male Wistar rats (n=56) divided in 7 groups were treated orally with: distilled water 10 ml/kg (control and CMS model groups); Rhodiola 250 mg/kg; Rhodiola 500 mg/kg; Curcuma 250 mg/kg; Curcuma 500 mg/kg, Rhodiola 250 mg/kg and Curcuma 250 mg/kg...
December 20, 2017: Folia Medica
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
#17
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/29341892/premature-aging-in-behavior-and-immune-functions-in-tyrosine-hydroxylase-haploinsufficient-female-mice-a-longitudinal-study
#18
A Garrido, J Cruces, N Ceprián, C Hernández-Sánchez, M De la Fuente
Aging is accompanied by impairment in the nervous, immune, and endocrine systems as well as in neuroimmunoendocrine communication. In this context, there is an age-related alteration of the physiological response to acute stress, which is modulated by catecholamine (CA), final products of the sympathetic-adreno-medullary axis. The involvement of CA in essential functions of the nervous system is consistent with the neuropsychological deficits found in mice with haploinsufficiency (hemizygous; HZ) of tyrosine hydroxylase (TH) enzyme (TH-HZ)...
January 13, 2018: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/29341891/long-term-treadmill-exercise-improves-memory-impairment-through-restoration-of-decreased-synaptic-adhesion-molecule-1-2-3-induced-by-transient-cerebral-ischemia-in-the-aged-gerbil-hippocampus
#19
Ji Hyeon Ahn, Joon Ha Park, Jinseu Park, Myoung Cheol Shin, Jun Hwi Cho, In Hye Kim, Jeong-Hwi Cho, Tae-Kyeong Lee, Jae-Chul Lee, Bich Na Shin, Young-Myeong Kim, Choong Hyun Lee, In Koo Hwang, Il Jun Kang, Bai Hui Chen, Bing Chun Yan, Young Joo Lee, Moo-Ho Won, Soo Young Choi
Exercise improves cognitive impairments induced by transient cerebral ischemia and modulates synaptic adhesion molecules. In this study, we investigated effects of long-term treadmill exercise on cognitive impairments and its relation to changes of synaptic cell adhesion molecule (SynCAM) 1/2/3 in the hippocampus after 5 min of transient cerebral ischemia in aged gerbils. Animals were assigned to sedentary and exercised groups, given treadmill exercise for 4 consecutive weeks from 5 days after transient ischemia and evaluated cognitive function through passive avoidance test and Morris water maze test...
January 13, 2018: Experimental Gerontology
https://www.readbyqxmd.com/read/29341889/adventitial-activation-in-the-pathogenesis-of-injury-induced-arterial-remodeling-potential-implications-in-transplant-vasculopathy
#20
REVIEW
Jianli Wang, Yuan Wang, Jingjing Wang, Xiaosun Guo, Elsa C Chan, Fan Jiang
Transplant vasculopathy is one of the major causes of chronic rejection following solid organ transplantation. The pathogenic mechanisms of transplant vasculopathy are still poorly understood. Here we summarize current evidence suggesting that activation of the tunica adventitia may be involved in the pathogenesis of transplant vasculopathy. Adventitia is an early responder to various vascular injuries and plays an integral role in eliciting vascular inflammation and remodeling. Accumulation of macrophages in the adventitia promotes the development of vascular remodeling by releasing a variety of paracrine factors that have profound impacts on vascular mural cells...
January 13, 2018: American Journal of Pathology
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