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https://www.readbyqxmd.com/read/29778007/augmentation-of-the-expression-of-the-eotaxin-receptor-on-duodenal-neutrophils-by-il-21
#1
Yuji Takeda, Tomoyuki Kato, Nobuhito Nemoto, Akemi Araki, Mohammad Yeashin Gazi, Hidetoshi Nara, Hironobu Asao
Inflammation can occur via different mechanisms, such as via acute and chronic responses, on numerous occasions and function accordingly through various roles. There are more than five subsets of neutrophils; neutrophilic heterogeneity is modulated by the inflammatory condition. To understand the characteristics of inflammation, identification of atypical neutrophils is important. In this study, we found that the expression of eotaxin receptor (CD193) on atypical neutrophils in the duodenum is augmented in IL-21 isoform transgenic (Tg) mice...
May 16, 2018: Cytokine
https://www.readbyqxmd.com/read/29777725/strain-related-differences-in-mouse-lung-gene-expression-over-a-two-year-period-of-inhalation-exposure-to-styrene-relevance-to-human-risk-assessment
#2
Melvin E Andersen, George Cruzan, Michael B Black, Salil N Pendse, Darol E Dodd, James S Bus, Satinder S Sarang, Marcy I Banton, Robbie Waites, Debra B Layko, Patrick D McMullen
Both CD-1 and C57BL/6 wildtype (C57BL/6-WT) mice show equivalent short-term lung toxicity from exposures to styrene, while long-term tumor responses are greater in CD-1 mice. We analyzed lung gene expression from styrene exposures lasting from 1-day to 2-years in male mice from these two strains, including a Cyp2f2(-/-) knockout (C57BL/6-KO) and a Cyp2F1/2A13/2B6 transgenic mouse (C57BL/6-TG). With short term exposures (1-day to 1-week), CD-1 and C57BL/6-WT mice had thousands of differentially expressed genes (DEGs), consistent with changes in pathways for cell proliferation, cellular lipid metabolism, DNA-replication and inflammation...
May 16, 2018: Regulatory Toxicology and Pharmacology: RTP
https://www.readbyqxmd.com/read/29777493/transgenic-mice-carrying-glud2-as-a-tool-for-studying-the-expressional-and-the-functional-adaptation-of-this-positive-selected-gene-in-human-brain-evolution
#3
Andreas Plaitakis, Dimitra Kotzamani, Zoe Petraki, Maria Delidaki, Vagelis Rinotas, Ioannis Zaganas, Eleni Douni, Kyriaki Sidiropoulou, Cleanthe Spanaki
Human evolution is characterized by brain expansion and up-regulation of genes involved in energy metabolism and synaptic transmission, including the glutamate signaling pathway. Glutamate is the excitatory transmitter of neural circuits sub-serving cognitive functions, with glutamate-modulation of synaptic plasticity being central to learning and memory. GLUD2 is a novel positively-selected human gene involved in glutamatergic transmission and energy metabolism that underwent rapid evolutionary adaptation concomitantly with prefrontal cortex enlargement...
May 18, 2018: Neurochemical Research
https://www.readbyqxmd.com/read/29777220/re-evaluating-microglia-expression-profiles-using-ribotag-and-cell-isolation-strategies
#4
Zhana Haimon, Alon Volaski, Johannes Orthgiess, Sigalit Boura-Halfon, Diana Varol, Anat Shemer, Simon Yona, Binyamin Zuckerman, Eyal David, Louise Chappell-Maor, Ingo Bechmann, Martin Gericke, Igor Ulitsky, Steffen Jung
Transcriptome profiling is widely used to infer functional states of specific cell types, as well as their responses to stimuli, to define contributions to physiology and pathophysiology. Focusing on microglia, the brain's macrophages, we report here a side-by-side comparison of classical cell-sorting-based transcriptome sequencing and the 'RiboTag' method, which avoids cell retrieval from tissue context and yields translatome sequencing information. Conventional whole-cell microglial transcriptomes were found to be significantly tainted by artifacts introduced by tissue dissociation, cargo contamination and transcripts sequestered from ribosomes...
May 18, 2018: Nature Immunology
https://www.readbyqxmd.com/read/29777027/t-cell-proliferation-and-colitis-are-initiated-by-defined-intestinal-microbes
#5
Pailin Chiaranunt, Justin T Tometich, Junyi Ji, Timothy W Hand
Inflammatory bowel disease has been associated with the dysregulation of T cells specific to Ags derived from the intestinal microbiota. How microbiota-specific T cells are regulated is not completely clear but is believed to be mediated by a combination of IgA, regulatory T cells, and type 3 innate lymphoid cells. To test the role of these regulatory components on microbiota-specific T cells, we bred CBir1 TCR transgenic (CBir1Tg) mice (specific to flagellin from common intestinal bacteria) onto a lymphopenic Rag1-/- background...
May 18, 2018: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29775895/ozone-therapy-prevents-the-onset-of-dysplasia-in-hpv16-transgenic-mice-a-pre-clinical-efficacy-and-safety-analysis
#6
C Peirone, V F Mestre, B Medeiros-Fonseca, B Colaço, M J Pires, T Martins, R M Gil da Costa, M J Neuparth, R Medeiros, M M S M Bastos, J A Marques-Magallanes, P A Oliveira
Infection with high-risk human papillomavirus (HPV), most often HPV16, is associated with the development of anogenital and oropharyngeal cancers. Recently, ozone therapy was reported to have considerable efficacy against rabbit VX2 tumors, induced by the cottontail rabbit papillomavirus. The present study aims to determine whether similar results can be obtained in HPV16-transgenic mice, possibly paving the way for new therapeutic options against HPV-induced cancers. HPV16-transgenic and wild-type, female, 20 weeks-old mice were injected intraperitoneally with medical O3 /O2 (80░mL/kg, at O3 50░μg/mL), once a day, for 5 consecutive days...
May 15, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29775667/identification-of-novel-hla-a11-restricted-t-cell-epitopes-in-the-ebola-virus-nucleoprotein
#7
Dan Li, Pei Li, Nianping Song, Yuting Jiang, Yang Zeng, Guangyu Zhao, Yunzhi Fa, Huahu Ye, Yuchun Lone, Yusen Zhou, Shihui Sun, Lin Zeng
The Ebola virus (EBOV) is a very contagious virus that is highly fatal in humans and animals. The largest epidemic was in West Africa in 2014, in which over 11,000 people died. However, to date, there are no licensed vaccines against it. Studies show that CD4+ and CD8+ T-cell responses, especially cytotoxic T-lymphocyte (CTL) responses, play key roles in protecting individuals from EBOV infection. Since HLA-restricted epitope vaccines are likely to be effective and safe immunization strategies for infectious diseases, the present study screened for CTL epitopes in the EBOV-nucleoprotein that are restricted by HLA-A11 (a common allele in Chinese people)...
May 15, 2018: Microbes and Infection
https://www.readbyqxmd.com/read/29775643/myocardial-infarction-induced-hippocampal-microtubule-damage-by-cardiac-originating-microrna-1-in-mice
#8
Lin-Lin Sun, Ming-Jing Duan, Ji-Chao Ma, Ling Xu, Meng Mao, Das Biddyut, Qin Wang, Chao Yang, Shuai Zhang, Yi Xu, Lin Yang, You Tian, Ying Liu, Sheng-Nan Xia, Ke-Xin Li, Zhuo Jin, Qiaojie Xiong, Jing Ai
Cardiovascular diseases are risk factors for dementia, but the mechanisms remain elusive. Here, we report that myocardial infarction (MI) generated by the ligation of the left coronary artery (LCA) could lead to increased miR-1 levels in the hippocampus and blood with neuronal microtubule damage and decreased TPPP/p25 protein expression in the hippocampus. These changes could be prevented by a knockdown of miR-1 using hippocampal stereotaxic injections of anti-miR-1 oligonucleotide fragments carried by a lentivirus vector (lenti-pre-AMO-miR-1)...
May 15, 2018: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/29775616/amelioration-of-uvb-induced-oxidative-stress-and-inflammation-in-fat-1-transgenic-mouse-skin
#9
Hye-Won Yum, Seong Hoon Kim, Jing X Kang, Young-Joon Surh
ω-3 polyunsaturated fatty acids (PUFAs), which are abundant in some fish oils, are known to scavenge lipid peroxyl radicals and increase host immunoresponsiveness. As UVB-induced oxidative stress and inflammation have been implicated in apoptotic cell death, this study was designed to investigate the anti-inflammatory, anti-oxidative, and anti-apoptotic capacity of fat-1 transgenic mice capable of converting ω-6 to ω-3 PUFAs. Wild-type (WT) C57BL/6 mice and fat-1 mice were maintained on the AIN-93 diet supplemented with 10% safflower oil rich in ω-6 PUFAs for 5 weeks...
May 15, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29775614/tumor-dependent-secretion-of-close-homolog-of-l1-results-in-elevation-of-its-circulating-level-in-mouse-model-for-human-lung-tumor
#10
Norihiro Kotani, Yui Ida, Takanari Nakano, Izumi Sato, Ryusuke Kuwahara, Arisa Yamaguchi, Masahiro Tomita, Koichi Honke, Takayuki Murakoshi
Close homolog of L1 (CHL1) and its truncated form mainly play crucial roles in mouse brain development and neural functions. Herein, we newly identified that truncated form of CHL1 is produced and released from lung tumor tissue in a mouse model expressing human EML4-ALK fusion gene. Both western blot and direct ELISA analysis revealed that mouse CHL1 level in serum (including serum extracellular vesicles) was significantly elevated in EML4-ALK transgenic mice. The correlation between the tumor size and the amount of CHL1 secretion could be examined in this study, and showed a significant positive correlation in a tumor size-dependent manner...
May 15, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29773902/nedd9-promotes-oncogenic-signaling-a-stem-mesenchymal-gene-signature-and-aggressive-ovarian-cancer-growth-in-mice
#11
Rashid Gabbasov, Fang Xiao, Caitlin G Howe, Laura E Bickel, Shane W O'Brien, Daniel Benrubi, Thuy-Vy Do, Yan Zhou, Emmanuelle Nicolas, Kathy Q Cai, Samuel Litwin, Sachiko Seo, Erica A Golemis, Denise C Connolly
Neural precursor cell expressed, developmentally downregulated 9 (NEDD9) supports oncogenic signaling in a number of solid and hematologic tumors. Little is known about the role of NEDD9 in ovarian carcinoma (OC), but available data suggest elevated mRNA and protein expression in advanced stage high-grade cancers. We used a transgenic MISIIR-TAg mouse OC model combined with genetic ablation of Nedd9 to investigate its action in the development and progression of OC. A Nedd9-/- genotype delayed tumor growth rate, reduced incidence of ascites, and reduced expression and activation of signaling proteins including SRC, STAT3, E-cadherin, and AURKA...
May 18, 2018: Oncogene
https://www.readbyqxmd.com/read/29773650/the-exercise-inducible-bile-acid-receptor-tgr5-improves-skeletal-muscle-function-in-mice
#12
Takashi Sasaki, Ayane Kuboyama, Moeko Mita, Shotaro Murata, Makoto Shimizu, Jun Inoue, Kazutoshi Mori, Ryuichiro Sato
TGR5 (also known as G protein-coupled bile acid receptor 1, GPBAR1) is a G protein-coupled bile acid receptor that is expressed in many diverse tissues. TGR5 is involved in various metabolic processes, including glucose metabolism and energy expenditure; however, TGR5's function in skeletal muscle is not fully understood. Using both gain- and loss-of-function mouse models, we demonstrate here that Tgr5 activation promotes muscle cell differentiation and muscle hypertrophy. Both young and old transgenic mice with muscle-specific Tgr5 expression exhibited increased muscle strength...
May 17, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29772786/tau-fibril-formation-in-cultured-cells-compatible-with-a-mouse-model-of-tauopathy
#13
Gen Matsumoto, Kazuki Matsumoto, Taeko Kimura, Tetsuya Suhara, Makoto Higuchi, Naruhiko Sahara, Nozomu Mori
Neurofibrillary tangles composed of hyperphosphorylated tau protein are primarily neuropathological features of a number of neurodegenerative diseases collectively termed tauopathy. To understand the mechanisms underlying the cause of tauopathy, precise cellular and animal models are required. Recent data suggest that the transient introduction of exogenous tau can accelerate the development of tauopathy in the brains of non-transgenic and transgenic mice expressing wild-type human tau. However, the transmission mechanism leading to tauopathy is not fully understood...
May 17, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29772544/antigen-specific-therapy-of-graves%C3%A2-disease-and-orbitopathy-by-induction-of-tolerance
#14
Martin Ungerer, Julia Fabbender, Hans-Peter Holthoff
Graves´ disease is an autoimmune disorder, which is characterized by stimulatory antibodies targeting the human thyrotropin receptor (TSHR), resulting in hyperthyroidism and multiple organ damage. The disease can be modelled in mice using adenoviral immunizations with the extracellular A subunit of the TSHR, which induces a long-term stable disease state. TSHR binding cAMP-stimulatory antibodies, thyroid enlargement, elevated serum thyroxin levels, tachycardia, cardiac hypertrophy and orbitopathy are observed in these Ad-TSHR-immunized mice...
June 1, 2018: Frontiers in Bioscience (Landmark Edition)
https://www.readbyqxmd.com/read/29772234/effects-of-n-3pufas-on-autophagy-and-inflammation-of-hypothalamus-and-body-weight-in-mice
#15
Xin Fang, Keli Ge, Chao Song, Yin Lin-Ge, Jin Yu-Zhang
OBJECTIVE: Fat-1 transgenic mice were used as a model to study the effect of endogenous n-3 polyunsaturated fatty acids (n-3PUFAs) on the body weight, inflammatory factors and autophagy proteins in hypothalamus to explore the mechanism of n-3PUFAs inhibiting obesity. METHOD: The mice were divided into two groups after genotype identification: fat-1 transgenic mice and wild-type mice. The body weight and body length of mice were measured at 14th week, and calculated the Lee 's index...
May 14, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29771991/progenitor-renin-lineage-cells-are-not-involved-in-the-regeneration-of-glomerular-endothelial-cells-during-experimental-renal-thrombotic-microangiopathy
#16
Leo Ruhnke, Jan Sradnick, Moath Al-Mekhlafi, Michael Gerlach, Florian Gembardt, Bernd Hohenstein, Vladimir T Todorov, Christian Hugo
Endothelial cells (EC) frequently undergo primary or secondary injury during kidney disease such as thrombotic microangiopathy or glomerulonephritis. Renin Lineage Cells (RLCs) serve as a progenitor cell niche after glomerular damage in the adult kidney. However, it is not clear whether RLCs also contribute to endothelial replenishment in the glomerulus following endothelial injury. Therefore, we investigated the role of RLCs as a potential progenitor niche for glomerular endothelial regeneration. We used an inducible tet-on triple-transgenic reporter strain mRen-rtTAm2/LC1/LacZ to pulse-label the renin-producing RLCs in adult mice...
2018: PloS One
https://www.readbyqxmd.com/read/29771571/effect-of-weak-combined-static-and-extremely-low-frequency-alternating-magnetic-fields-on-spatial-memory-and-brain-amyloid-%C3%AE-in-two-animal-models-of-alzheimer-s-disease
#17
Natalia V Bobkova, Vadim V Novikov, Natalia I Medvinskaya, Irina Y Aleksandrova, Inna V Nesterova, Eugenii E Fesenko
Subchronic effect of a weak combined magnetic field (MF), produced by superimposing a constant component, 42 µT and an alternating MF of 0.08 µT, which was the sum of two frequencies of 4.38 and 4.88 Hz, was studied in olfactory bulbectomized (OBE) and transgenic Tg (APPswe, PSEN1) mice, which were used as animal models of sporadic and heritable Alzheimer's disease (AD) accordingly. Spatial memory was tested in a Morris water maze on the following day after completion of training trials with the hidden platform removed...
May 17, 2018: Electromagnetic Biology and Medicine
https://www.readbyqxmd.com/read/29770957/first-in-rat-study-of-human-alzheimer-s-disease-tau-propagation
#18
Tomas Smolek, Santosh Jadhav, Veronika Brezovakova, Veronika Cubinkova, Bernadeta Valachova, Petr Novak, Norbert Zilka
One of the key features of misfolded tau in human neurodegenerative disorders is its propagation from one brain area into many others. In the last decade, in vivo tau spreading has been replicated in several mouse transgenic models expressing mutated human tau as well as in normal non-transgenic mice. In this study, we demonstrate for the first time that insoluble tau isolated from human AD brain induces full-blown neurofibrillary pathology in a sporadic rat model of tauopathy expressing non-mutated truncated tau protein...
May 16, 2018: Molecular Neurobiology
https://www.readbyqxmd.com/read/29770746/-express-chronic-inflammatory-pain-decreases-the-glutamate-vesicles-in-presynaptic-terminals-of-the-nucleus-accumbens
#19
Chuchu Qi, Baolin Guo, Keke Ren, Han Yao, Mengmeng Wang, Tangna Sun, Guohong Cai, Haiying Liu, Rui Li, Ceng Luo, Wenting Wang, Sheng-Xi Wu
Reward system has been proved to be important to nociceptive behavior, and the nucleus accumbens (NAc) is a key node in reward circuitry. It has been further revealed that dopamine system modulates the NAc to influence the pain sensation, whereas the role of glutamatergic projection in the NAc in the modulation of chronic pain is still elusive. In this study, we used a Complete Freund adjuvant (CFA) -induced chronic inflammatory pain model to explore the changes of the glutamatergic terminals in the NAc, and we found that following the chronic inflammation, the protein level of vesicular glutamate transporters1 (VGLUT1) was significant decreased in the NAc...
January 1, 2018: Molecular Pain
https://www.readbyqxmd.com/read/29770537/dietary-intake-of-iodine-enriched-eggs-decreases-the-incidence-of-mouse-mammary-tumors-caused-by-the-activated-erbb2-oncogene
#20
Kazunori Oyama, Takahiro Shimoda, Makoto Miyagawa, Mizuki Sone, Jiro Yokoyama, Katsuhiko Nishimori, Tomokazu Fukuda
Human epigenetic studies suggest that consumption of seaweed prevents mammary cancer, which possibly is explained by iodine daily intake. In this study, we evaluated the efficacy of dietary intake of iodine-enriched eggs on mammary tumor incidence caused by the expression of activated type ErbB2. Female transgenic mice were divided into three groups, and fed a basic diet, a diet supplemented with ordinary eggs, or with iodine-enriched eggs. The number of mammary tumors greater than 5 mm in diameter was recorded in mice at 6 months of age...
May 16, 2018: Animal Science Journal, Nihon Chikusan Gakkaihō
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