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https://www.readbyqxmd.com/read/28339908/obesity-associated-cardiac-pathogenesis-in-broiler-breeder-hens-pathological-adaption-of-cardiac-hypertrophy1-2
#1
C Y Chen, H Y Lin, Y W Chen, Y J Ko, Y J Liu, Y H Chen, R L Walzem, S E Chen
Broiler hens consuming feed to appetite (ad libitum; AL) show increased mortality. Feed restriction (R) typically improves reproductive performance and livability of hens. Rapidly growing broilers can exhibit increased mortality due to cardiac insufficiency but it is unknown whether the increased mortality of non-R broiler hens is also due to cardiac compromise. To assess cardiac growth and physiology in fully mature birds, 45-week-old hens were either continued on R rations or assigned to AL feeding for 7 or 21 days...
March 1, 2017: Poultry Science
https://www.readbyqxmd.com/read/28339768/the-transcription-factor-olig2-is-important-for-the-biology-of-diffuse-intrinsic-pontine-gliomas
#2
Jane L Anderson, Ranjithmenon Muraleedharan, Nicole Oatman, Amanda Klotter, Satarupa Sengupta, Ronald R Waclaw, Jianqiang Wu, Rachid Drissi, Lili Miles, Eric H Raabe, Matthew L Weirauch, Maryam Fouladi, Lionel M Chow, Lindsey Hoffman, Mariko DeWire, Biplab Dasgupta
Background.: Diffuse intrinsic pontine glioma (DIPG) is a high-grade brainstem glioma of children with dismal prognosis. There is no single unifying model about the cell of origin of DIPGs. Proliferating cells in the developing human and mouse pons, the site of DIPGs, express neural stem/progenitor cell (NPC) markers, including Sox2, nestin, vimentin, Olig2, and glial fibrillary acidic protein, in an overlapping and non-overlapping manner, suggesting progenitor cell heterogeneity in the pons...
February 23, 2017: Neuro-oncology
https://www.readbyqxmd.com/read/28338358/a-mismatch-between-athlete-practice-and-current-sports-nutrition-guidelines-among-elite-female-and-male-middle-and-long-distance-athletes
#3
Ida Aliisa Heikura, Trent Stellingwerff, Antti A Mero, Arja Leena Tuulia Uusitalo, Louise Mary Burke
Contemporary nutrition guidelines promote a variety of periodized and time-sensitive recommendations, but current information regarding the knowledge and practice of these strategies among world-class athletes is limited. The aim of this study was to investigate this theme by implementing a questionnaire on dietary periodization practices in national/international level female (n=27) and male (n=21) middle- and long-distance runners/race-walkers. The questionnaire aimed to gain information on between and within-day dietary choices, as well as timing of pre- and post-training meals and practices of training with low or high carbohydrate (CHO) availability...
March 24, 2017: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/28337642/the-small-heat-shock-proteins-%C3%AE-b-crystallin-hspb5-and-hsp27-hspb1-inhibit-the-intracellular-aggregation-of-%C3%AE-synuclein
#4
Dezerae Cox, Heath Ecroyd
Protein homeostasis, or proteostasis, is the process of maintaining the conformational and functional integrity of the proteome. Proteostasis is preserved in the face of stress by a complex network of cellular machinery, including the small heat shock molecular chaperone proteins (sHsps), which act to inhibit the aggregation and deposition of misfolded protein intermediates. Despite this, the pathogenesis of several neurodegenerative diseases has been inextricably linked with the amyloid fibrillar aggregation and deposition of α-synuclein (α-syn)...
March 23, 2017: Cell Stress & Chaperones
https://www.readbyqxmd.com/read/28337203/a-universal-vaccine-against-leptospirosis-are-we-going-in-the-right-direction
#5
André Alex Grassmann, Jéssica Dias Souza, Alan John Alexander McBride
Leptospirosis is the most widespread zoonosis in the world and a neglected tropical disease estimated to cause severe infection in more than one million people worldwide every year that can be combated by effective immunization. However, no significant progress has been made on the leptospirosis vaccine since the advent of bacterins over 100 years. Although protective against lethal infection, particularly in animals, bacterin-induced immunity is considered short term, serovar restricted, and the vaccine can cause serious side effects...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28337029/the-impact-of-protein-quantity-during-energy-restriction-on-genome-wide-gene-expression-analysis-in-adipose-tissue-of-obese-humans
#6
I P G Van Bussel, E M P Backx, C P G M De Groot, M Tieland, M Müller, L A Afman
BACKGROUND: Overweight and obesity is a growing health problem worldwide. The most effective strategy to reduce weight is energy restriction (ER). ER has been shown to be beneficial in disease prevention and it reduces chronic inflammation. Recent studies suggest that reducing the protein quantity of a diet contributes to the beneficial effects by ER. The organ most extensively affected during ER is white adipose tissue (WAT). OBJECTIVE: The first objective was to assess changes in gene expression between a high protein diet and a normal protein diet during ER...
March 24, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28336567/sox9-is-an-astrocyte-specific-nuclear-marker-in-the-adult-brain-outside-the-neurogenic-regions
#7
Wei Sun, Adam Cornwell, Jiashu Li, Sisi Peng, M Joana Osorio, Nadia Aalling Su Wanga, Abdellatif Benraiss, Nanhong Lou, Steven A Goldman, Maiken Nedergaard
Astrocytes have in recent years become the focus of intense experimental interest, yet markers for their definitive identification remain both scarce and imperfect. Astrocytes may be recognized as such by their expression of glial fibrillary acidic protein (GFAP), glutamine synthetase (GS), glutamate transporter 1 (GLT1)quaporin-4 (AQP4)ldehyde dehydrogenase 1 family member L1 (ALDH1L1)nd other proteins. Yet these proteins may all be regulated both developmentally and functionally, restricting their utility...
March 23, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28336404/mapping-region-of-human-restriction-factor-apobec3h-critical-for-interaction-with-hiv-1-vif
#8
Masaaki Nakashima, Shinya Tsuzuki, Hiroaki Awazu, Akiko Hamano, Ayaka Okada, Hirotaka Ode, Masami Maejima, Atsuko Hachiya, Yoshiyuki Yokomaku, Nobuhisa Watanabe, Hirofumi Akari, Yasumasa Iwatani
The APOBEC3 (A3) family of cellular cytidine deaminases comprises seven members (A, B, C, D, F, G, and H) that potently inhibit retroviral replication. Human immunodeficiency virus type 1 (HIV-1) Vif is a small pleiotropic protein that specifically inactivates these enzymes, targeting them for ubiquitin-mediated proteasomal degradation. A3 Vif-interaction sites are presumed to fall into three distinct types: A3C/D/F, A3G, and A3H. To date, two types of A3G and A3C/D/F sites have been well characterized, whereas the A3H Vif-binding site remains poorly defined...
March 20, 2017: Journal of Molecular Biology
https://www.readbyqxmd.com/read/28336104/serum-25-hydroxyvitamin-d-and-metabolic-syndrome-in-a-japanese-working-population-the-furukawa-nutrition-and-health-study
#9
Shamima Akter, Masafumi Eguchi, Kayo Kurotani, Takeshi Kochi, Ikuko Kashino, Rie Ito, Keisuke Kuwahara, Hiroko Tsuruoka, Isamu Kabe, Tetsuya Mizoue
OBJECTIVE: Increasing evidence has suggested a protective role of vitamin D on metabolic syndrome (MetS). However, studies addressing this issue are limited in Asia and it remains unclear whether calcium could modify the association. We examined the association of serum 25-hydroxyvitamin D (25(OH)D) status with MetS, and the potential effect modification by calcium intake in a Japanese working population. METHODS: Study subjects were 1790 workers, ages 18 to 69 y, who participated in a health survey at the time of periodic checkup...
April 2017: Nutrition
https://www.readbyqxmd.com/read/28336075/engineering-bret-sensor-proteins
#10
Remco Arts, Stijn J A Aper, Maarten Merkx
FRET-sensors have become important tools for intracellular imaging, but their dependence on external illumination presents some limitations, such as photobleaching and phototoxicity, which limit measurements over extended periods of time. Fluorescence measurements also suffer from autofluorescence and light scattering, which hampers in vivo imaging and measurements in strongly absorbing and scattering media such as blood. In principle, these issues can be resolved by using sensors based on bioluminescence resonance energy transfer (BRET)...
2017: Methods in Enzymology
https://www.readbyqxmd.com/read/28334928/functional-assessment-of-ctcf-sites-at-cytokine-sensing-mammary-enhancers-using-crispr-cas9-gene-editing-in-mice
#11
Hye Kyung Lee, Michaela Willi, Chaochen Wang, Chul Min Yang, Harold E Smith, Chengyu Liu, Lothar Hennighausen
The zinc finger protein CTCF has been invoked in establishing boundaries between genes, thereby controlling spatial and temporal enhancer activities. However, there is limited genetic evidence to support the concept that these boundaries restrict the search space of enhancers. We have addressed this question in the casein locus containing five mammary and two non-mammary genes under the control of at least seven putative enhancers. We have identified two CTCF binding sites flanking the locus and two associated with a super-enhancer...
March 16, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28334808/downregulation-of-pathways-implicated-in-liver-inflammation-and-tumorigenesis-of-glycogen-storage-disease-type-ia-mice-receiving-gene-therapy
#12
Goo-Young Kim, Joon Hyun Kwon, Jun-Ho Cho, Lisa Zhang, Brian C Mansfield, Janice Y Chou
Glycogen storage disease type Ia (GSD-Ia) is characterized by impaired glucose homeostasis and long-term risks of hepatocellular adenoma (HCA) and carcinoma (HCC). We have shown that the non-tumor-bearing (NT), recombinant adeno-associated virus (rAAV) vector-treated GSD-Ia mice (AAV-NT mice) expressing a wide range (0.9-63%) of normal hepatic glucose-6-phosphatase-α activity maintain glucose homeostasis and display physiologic features mimicking animals living under calorie restriction (CR). We now show that in AAV-NT mice, the signaling pathways of the CR mediators, AMP-activated protein kinase (AMPK) and sirtuin-1 are activated...
March 13, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28334709/micronutrients-essential-fatty-acids-and-bone-health-in-phenylketonuria
#13
Serwet Demirdas, Francjan J van Spronsen, Carla E M Hollak, J Hanneke van der Lee, Peter H Bisschop, Fred M Vaz, Nienke M Ter Horst, M Estela Rubio-Gozalbo, Annet M Bosch
INTRODUCTION: In phenylketonuria (PKU), a natural protein-restricted dietary treatment prevents severe cognitive impairment. Nutrient deficiencies may occur due to strict diet. This study is aimed at evaluating the dietary intake and blood concentrations of micronutrients and essential fatty acids (FA), bone mineral density (BMD) and fracture history in patients on long-term dietary treatment. METHODS: Sixty early diagnosed Dutch patients (aged 1-39 years) were included in a multi-center cross-sectional study...
March 24, 2017: Annals of Nutrition & Metabolism
https://www.readbyqxmd.com/read/28334068/the-dyslexia-susceptibility-protein-kiaa0319-inhibits-axon-growth-through-smad2-signaling
#14
Filipa Franquinho, Joana Nogueira-Rodrigues, Joana M Duarte, Sofia S Esteves, Christin Carter-Su, Anthony P Monaco, Zoltán Molnár, Antonio Velayos-Baeza, Pedro Brites, Mónica M Sousa
KIAA0319 is a transmembrane protein associated with dyslexia with a presumed role in neuronal migration. Here we show that KIAA0319 expression is not restricted to the brain but also occurs in sensory and spinal cord neurons, increasing from early postnatal stages to adulthood and being downregulated by injury. This suggested that KIAA0319 participates in functions unrelated to neuronal migration. Supporting this hypothesis, overexpression of KIAA0319 repressed axon growth in hippocampal and dorsal root ganglia neurons; the intracellular domain of KIAA0319 was sufficient to elicit this effect...
February 17, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/28334041/virus-mediated-suppression-of-host-non-self-recognition-facilitates-horizontal-transmission-of-heterologous-viruses
#15
Songsong Wu, Jiasen Cheng, Yanping Fu, Tao Chen, Daohong Jiang, Said A Ghabrial, Jiatao Xie
Non-self recognition is a common phenomenon among organisms; it often leads to innate immunity to prevent the invasion of parasites and maintain the genetic polymorphism of organisms. Fungal vegetative incompatibility is a type of non-self recognition which often induces programmed cell death (PCD) and restricts the spread of molecular parasites. It is not clearly known whether virus infection could attenuate non-self recognition among host individuals to facilitate its spread. Here, we report that a hypovirulence-associated mycoreovirus, named Sclerotinia sclerotiorum mycoreovirus 4 (SsMYRV4), could suppress host non-self recognition and facilitate horizontal transmission of heterologous viruses...
March 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28333371/structure-dependent-behaviours-of-skin-layers-studied-by-atomic-force-microscopy
#16
A C Chang, B H Liu, P L Shao, J D Liao
The multilayer skin provides the physical resistance and strength against the environmental attacks, and consequently plays a significant role in maintaining the mammalian health. Currently, optical microscopy (OM) is the most common method for the research related to skin tissues while with the drawbacks including the possibility of changing the native morphology of the sample with the addition of the chemical or immunological staining and the restricted resolution of images for the direct observation of the tissue structures...
March 23, 2017: Journal of Microscopy
https://www.readbyqxmd.com/read/28333314/characterization-of-e-type-colicinogenic-plasmids-from-shigella-sonnei
#17
Fatema Calcuttawala, Chellaram Hariharan, Gururaja P Pazhani, Dhira Rani Saha, Thandavarayan Ramamurthy
Colicinogenic plasmids encode toxic proteins which have antagonistic activity against closely related bacteria. This study describes the molecular characterization of three colicinogenic plasmids designated as pSSE3, pSSE and pSSE2, each with a molecular size of ∼6 kb, identified in clinical isolates of S. sonnei. Sequence analysis revealed that pSSE and pSSE2 shared extensive sequence homology with each other and with Escherichia coli E-type colicinogenic plasmids. The plasmid pSSE3 lacked an additional gene imparting immunity to colicin E8, a unique feature not observed in any of the previously reported sequences of colicin E3 plasmids...
March 15, 2017: FEMS Microbiology Letters
https://www.readbyqxmd.com/read/28333195/genome-wide-genetic-analyses-highlight-mitogen-activated-protein-kinase-mapk-signaling-in-the-pathogenesis-of-endometriosis
#18
Outi Uimari, Nilufer Rahmioglu, Dale R Nyholt, Katy Vincent, Stacey A Missmer, Christian Becker, Andrew P Morris, Grant W Montgomery, Krina T Zondervan
STUDY QUESTION: Do genome-wide association study (GWAS) data for endometriosis provide insight into novel biological pathways associated with its pathogenesis? SUMMARY ANSWER: GWAS analysis uncovered multiple pathways that are statistically enriched for genetic association signals, analysis of Stage A disease highlighted a novel variant in MAP3K4, while top pathways significantly associated with all endometriosis and Stage A disease included several mitogen-activated protein kinase (MAPK)-related pathways...
February 9, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28331090/hili-inhibits-hiv-replication-in-activated-t-cells
#19
B Matija Peterlin, Pingyang Liu, Xiaoyun Wang, Daniele Cary, Wei Shao, Marie Leoz, Tian Hong, Tao Pan, Koh Fujinaga
Piwil proteins restrict the replication of mobile genetic elements in the germline. They are also expressed in many transformed cell lines. In this report, we discovered that the human piwil 2 (hili) can also inhibit HIV replication, especially in activated CD4+ T cells that are the preferred target cells for this virus in the infected host. Although resting cells did not express hili, it was rapidly induced following T cell activation. In these cells and transformed cell lines, depletion of hili increased levels of viral proteins and new viral particles...
March 22, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28331087/feline-immunodeficiency-virus-evolutionarily-acquires-two-proteins-vif-and-protease-capable-of-antagonizing-feline-apobec3
#20
Rokusuke Yoshikawa, Junko S Takeuchi, Eri Yamada, Yusuke Nakano, Naoko Misawa, Yuichi Kimura, Fengrong Ren, Takayuki Miyazawa, Yoshio Koyanagi, Kei Sato
The interplay between viral and host proteins has been well studied to elucidate virus-host interactions and their relevance to virulence. Mammalian genes encode apolipoprotein B mRNA-editing enzyme catalytic polypeptide-like 3 (APOBEC3) proteins, which act as intrinsic restriction factors against lentiviruses. To overcome APOBEC3-mediated anti-viral actions, lentiviruses have evolutionarily acquired an accessory protein, viral infectivity factor (Vif), and Vif degrades host APOBEC3 proteins via a ubiquitin/proteasome-dependent pathway...
March 22, 2017: Journal of Virology
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