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https://www.readbyqxmd.com/read/28724203/huprine-x-attenuates-the-neurotoxicity-induced-by-kainic-acid-especially-brain-inflammation
#1
J Relat, B Pérez, P Camps, D Muñoz-Torrero, A Badia, M V Clos
Huprine X (HX) is a synthetic anticholinesterasic compound that exerts a potent inhibitory action on acetylcholinesterase (AChE) activity, an agonist effect on cholinergic receptors, neuroprotective activity in different neurotoxicity models in vivo and in vitro and cognition enhancing effects in non-transgenic (C57BL/6) and transgenic (3xTg-AD, APPswe) mice. In the present study, we assessed the ability of HX (0.8 mg/kg, 21 days) to prevent the damage induced by kainic acid (KA; 28 mg/kg) regarding apoptosis, glia reactivity and neurogenesis in mouse brain...
July 19, 2017: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28723951/cd8-t-cells-provide-immune-protection-against-murine-disseminated-endotheliotropic-orientia-tsutsugamushi-infection
#2
Guang Xu, Nicole L Mendell, Yuejin Liang, Thomas R Shelite, Yenny Goez-Rivillas, Lynn Soong, Donald H Bouyer, David H Walker
Scrub typhus, caused by a Gram-negative obligately intracellular coccobacillus, Orientia tsutsugamushi, is a long neglected but important tropical disease. Orientia tsutsugamushi causes illness in one million people each year, and 1 billion people are at risk. Without appropriate diagnosis and treatment, the disease can cause severe multiorgan failure with a case fatality rate of 7-15%. The current gaps in knowledge of immunity include the unknown mechanisms of host immunity to O. tsutsugamushi. Using an intravenous (i...
July 19, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28723938/gender-differences-in-cerebral-metabolism-for-color-processing-in-mice-a-pet-mri-study
#3
Philip C Njemanze, Mathias Kranz, Mario Amend, Jens Hauser, Hans Wehrl, Peter Brust
INTRODUCTION: Color processing is a central component of mammalian vision. Gender-related differences of color processing revealed by non-invasive functional transcranial Doppler ultrasound suggested right hemisphere pattern for blue/yellow chromatic opponency by men, and a left hemisphere pattern by women. MATERIALS AND METHODS: The present study measured the accumulation of [18F]fluorodeoxyglucose ([18F]FDG) in mouse brain using small animal positron emission tomography and magnetic resonance imaging (PET/MRI) with statistical parametric mapping (SPM) during light stimulation with blue and yellow filters compared to darkness condition...
2017: PloS One
https://www.readbyqxmd.com/read/28723922/temporal-progression-of-parp-activity-in-the-prph2-mutant-rd2-mouse-neuroprotective-effects-of-the-parp-inhibitor-pj34
#4
Ayse Sahaboglu, Alaa Sharif, Lili Feng, Enver Secer, Eberhart Zrenner, François Paquet-Durand
Peripherin (peripherin/rds) is a membrane-associated protein that plays a critical role in the morphogenesis of rod and cone photoreceptor outer segments. Mutations in the corresponding PRPH2 gene cause different types of retinal dystrophies characterized by a loss of photoreceptors. Over activation of poly-ADP-ribose polymerase (PARP) was previously shown to be involved in different animal models for hereditary retinal dystrophies. This includes the rd2 mouse, which suffers from a human homologous mutation in the PRPH2 gene...
2017: PloS One
https://www.readbyqxmd.com/read/28723918/heterogeneity-of-p53-dependent-genomic-responses-following-ethanol-exposure-in-a-developmental-mouse-model-of-fetal-alcohol-spectrum-disorder
#5
Maria Camargo Moreno, Sandra M Mooney, Frank A Middleton
Prenatal ethanol exposure can produce structural and functional deficits in the brain and result in Fetal Alcohol Spectrum Disorder (FASD). In rodent models acute exposure to a high concentration of alcohol causes increased apoptosis in the developing brain. A single causal molecular switch that signals for this increase in apoptosis has yet to be identified. The protein p53 has been suggested to play a pivotal role in enabling cells to engage in pro-apoptotic processes, and thus figures prominently as a hub molecule in the intracellular cascade of responses elicited by alcohol exposure...
2017: PloS One
https://www.readbyqxmd.com/read/28723896/maternal-h3k27me3-controls-dna-methylation-independent-imprinting
#6
Azusa Inoue, Lan Jiang, Falong Lu, Tsukasa Suzuki, Yi Zhang
Mammalian sperm and oocytes have different epigenetic landscapes and are organized in different fashions. After fertilization, the initially distinct parental epigenomes become largely equalized with the exception of certain loci, including imprinting control regions. How parental chromatin becomes equalized and how imprinting control regions escape from this reprogramming is largely unknown. Here we profile parental allele-specific DNase I hypersensitive sites in mouse zygotes and morula embryos, and investigate the epigenetic mechanisms underlying these allelic sites...
July 19, 2017: Nature
https://www.readbyqxmd.com/read/28723693/upregulation-of-microrna-876-induces-endothelial-cell-apoptosis-by-suppressing-bcl-xl-in-development-of-atherosclerosis
#7
Kaicheng Xu, Peng Liu, Yue Zhao
BACKGROUND/AIMS: The injury and apoptotic cell death of endothelial cells hallmark the development of atherosclerosis (AS), characterized by dysregulation of lipid homeostasis, immune responses, and formation of coronary plaques. However, the mechanisms underlying the initiation of endothelial cell apoptosis remain ill-defined. Recent evidence suggests a role of microRNAs in the processes of AS-associated endothelial cell apoptosis. Thus, we studied this question in the current study...
July 19, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28723688/trigonelline-inhibits-inflammation-and-protects-%C3%AE-cells-to-prevent-fetal-growth-restriction-during-pregnancy-in-a-mouse-model-of-diabetes
#8
Ji-Yin Zhou, Xiao-Huang Du, Zuo Zhang, Gui-Sheng Qian
BACKGROUND: As an active component from traditional Chinese medicine, trigonelline has a protective effect on diabetes. This study evaluated the protective effects of trigonelline on diabetic mice during pregnancy. METHODS: Diabetes was induced in female mice by intraperitoneal injection for continuous 5-day of 40 mg/kg/day streptozotocin. Female mice were divided into 4 groups after they were allowed to mate with normal male mice: nondiabetic, nondiabetic treated with trigonelline (70 mg/kg) for 18 days, diabetic, and diabetic treated with trigonelline (70 mg/kg)...
July 20, 2017: Pharmacology
https://www.readbyqxmd.com/read/28723652/a-patient-derived-orthotopic-xenograft-pdox-mouse-model-of-a-cisplatinum-resistant-osteosarcoma-lung-metastasis-that-was-sensitive-to-temozolomide-and-trabectedin-implications-for-precision-oncology
#9
Kentaro Igarashi, Takashi Murakami, Kei Kawaguchi, Tasuku Kiyuna, Kentaro Miyake, Yong Zhang, Scott D Nelson, Sarah M Dry, Yunfeng Li, Jane Yanagawa, Tara A Russell, Arun S Singh, Hiroyuki Tsuchiya, Irmina Elliott, Fritz C Eilber, Robert M Hoffman
In the present study, we evaluated the efficacy of trabectedin (TRAB) and temozolomide (TEM) compared to cisplatinum (CDDP) on a patient-derived orthotopic xenogrraft (PDOX) of a lung-metastasis from an osteosarcoma of a patient who failed CDDP therapy. Osteosarcoma resected from the patient was implanted orthotopically in the distal femur of mice to establish PDOX models which were randomized into the following groups when tumor volume reached approximately 100 mm3: G1, control without treatment; G2, CDDP (6 mg/kg, intraperitoneal injection, weekly, for 2 weeks); G3, TRAB (0...
July 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28723647/set-contributes-to-the-epithelial-mesenchymal-transition-of-pancreatic-cancer
#10
Hardik R Mody, Sau Wai Hung, Kineta Naidu, Haesung Lee, Caitlin A Gilbert, Toan Thanh Hoang, Rakesh K Pathak, Radhika Manoharan, Shanmugam Muruganandan, Rajgopal Govindarajan
Pancreatic cancer has a devastating prognosis due to 80-90% of diagnostic cases occurring when metastasis has already presented. Activation of the epithelial-mesenchymal transition (EMT) is a prerequisite for metastasis because it allows for the dissemination of tumor cells to blood stream and secondary organs. Here, we sought to determine the role of SET oncoprotein, an endogenous inhibitor of PP2A, in EMT and pancreatic tumor progression. Among the two major isoforms of SET (isoform 1 and isoform 2), higher protein levels of SET isoform 2 were identified in aggressive pancreatic cancer cell lines...
July 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/28723644/fir-haplodeficiency-promotes-splicing-to-pyruvate-kinase-m2-in-mice-thymic-lymphoma-tissues-revealed-by-six-plex-tandem-mass-tag-quantitative-proteomic-analysis
#11
Asako Kimura, Kouichi Kitamura, Guzhanuer Ailiken, Mamoru Satoh, Toshinari Minamoto, Nobuko Tanaka, Fumio Nomura, Kazuyuki Matsushita
The switch of pyruvate kinase (PK) M1 to PKM2 is pivotal for glucose metabolism in cancers. The PKM1/M2 shift is controlled by the alternative splicing of two mutually exclusive exons in the PKM gene. PKM1 is expressed in differentiated tissues, whereas PKM2 is expressed in cancer tissues. This study revealed that the haplodeficiency of FUSE-binding protein (FBP)-interacting repressor (FIR), a transcriptional repressor of the c-myc gene, contributed to the splicing of PKM1 to PKM2 in mice thymic lymphoma and/or T-cell type acute lymphoblastic leukemia (T-ALL) using six-plex tandem mass tag (TMT) quantitative proteomic analysis...
July 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/28723643/methyltransferase-g9a-promotes-cervical-cancer-angiogenesis-and-decreases-patient-survival
#12
Ruey-Jien Chen, Chia-Tung Shun, Men-Luh Yen, Chia-Hung Chou, Ming-Chieh Lin
Research suggests that the epigenetic regulator G9a, a H3K9 histone methyltransferase, is involved in cancer invasion and metastasis. Here we show that G9a is linked to cancer angiogenesis and poor patient survival. Invasive cervical cancer has a higher G9a expression than cancer precursors or normal epithelium. Pharmacological inhibition and genetic silencing of G9a suppresses H3K9 methylation, cancer cell proliferation, angiogenesis, and cancer cell invasion/migration, but not apoptosis. Microarray and quantitative reverse transcription polymerase chain reaction analyses reveal that G9a induces a cohort of angiogenic factors that include angiogenin, interleukin-8, and C-X-C motif chemokine ligand 16...
July 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/28723642/suppression-of-microrna-384-enhances-autophagy-of-airway-smooth-muscle-cells-in-asthmatic-mouse
#13
Zhe Cheng, Xi Wang, Lingling Dai, Liuqun Jia, Xiaogang Jing, Ying Liu, Huan Wang, Pengfei Li, Lin An, Meng Liu
Injury to airway smooth muscle (ASM) cells hallmarks the pathological progression of asthma, a chronic inflammatory airway disease. MicroRNAs (miRNAs) play essential roles in the development of asthma as well as airway remodeling. Here we studied the involvement of miRNAs in the regulation of autophagic survival of ASM cells and airway disorder. We analyzed autophagy-associated factors LC3 and Beclin-1 by RT-qPCR and protein blotting in purified airway smooth muscle cells from ovalbumin (OVA)-induced asthmatic mice...
July 1, 2017: Oncotarget
https://www.readbyqxmd.com/read/28723623/daurinol-blocks-breast-and-lung-cancer-metastasis-and-development-by-inhibition-of-focal-adhesion-kinase-fak
#14
Jong K Woo, Hyun J Jung, Ji-Youn Park, Ju-Hee Kang, Byung I Lee, DongYun Shin, Chu W Nho, Soo-Young Cho, Je K Seong, Seung H Oh
FAK overexpression has been reported in diverse primary and metastatic tumor tissues, supporting its pro-tumorigenic and pro-metastatic roles. Therefore, we have developed a neo-treatment strategy using daurinol to effectively treat cancer metastasis. Daurinol blocked cancer cell migration and invasion in vitro and exhibited anti-metastatic activity in an experimental metastasis model of breast and lung cancer. Daurinol selectively inhibited phosphorylation of FAK at Tyr925, Tyr576/577, and Tyr397 sites in a dose- and time-dependent manner...
July 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28723618/mir-223-3p-inhibits-angiogenesis-and-promotes-resistance-to-cetuximab-in-head-and-neck-squamous-cell-carcinoma
#15
Alexandre Bozec, Joséphine Zangari, Mathilde Butori-Pepino, Marius Ilie, Salomé Lalvee, Thierry Juhel, Catherine Butori, Patrick Brest, Paul Hofman, Valérie Vouret-Craviari
MicroRNAs (miRs) participate in tumor growth and dissemination by regulating expression of various target genes. MiR-223-3p is suspected of being involved in head and neck squamous cell carcinoma (HNSCC) growth although its precise role has not been elucidated. In this study, we showed that miR-223-3p is present in biopsies of HNSCC patients and that its presence is correlated with high neutrophil infiltrate. We found that overexpression of miR-223-3p slightly increased proliferation of the CAL27 squamous carcinoma cell line both in vitro and in vivo...
July 11, 2017: Oncotarget
https://www.readbyqxmd.com/read/28723571/emi2-is-essential-for-mouse-spermatogenesis
#16
Lakshmi Gopinathan, Radoslaw Szmyd, Diana Low, M Kasim Diril, Heng-Yu Chang, Vincenzo Coppola, Kui Liu, Lino Tessarollo, Ernesto Guccione, Ans M M van Pelt, Philipp Kaldis
The meiotic functions of Emi2, an inhibitor of the APC/C complex, have been best characterized in oocytes where it mediates metaphase II arrest as a component of the cytostatic factor. We generated knockout mice to determine the in vivo functions of Emi2-in particular, its functions in the testis, where Emi2 is expressed at high levels. Male and female Emi2 knockout mice are viable but sterile, indicating that Emi2 is essential for meiosis but dispensable for embryonic development and mitotic cell divisions...
July 18, 2017: Cell Reports
https://www.readbyqxmd.com/read/28723558/dendritic-cell-lineage-potential-in-human-early-hematopoietic-progenitors
#17
Julie Helft, Fernando Anjos-Afonso, Annemarthe G van der Veen, Probir Chakravarty, Dominique Bonnet, Caetano Reis E Sousa
Conventional dendritic cells (cDCs) are thought to descend from a DC precursor downstream of the common myeloid progenitor (CMP). However, a mouse lymphoid-primed multipotent progenitor has been shown to generate cDCs following a DC-specific developmental pathway independent of monocyte and granulocyte poiesis. Similarly, here we show that, in humans, a large fraction of multipotent lymphoid early progenitors (MLPs) gives rise to cDCs, in particular the subset known as cDC1, identified by co-expression of DNGR-1 (CLEC9A) and CD141 (BDCA-3)...
July 18, 2017: Cell Reports
https://www.readbyqxmd.com/read/28723556/peroxisome-mediated-metabolism-is-required-for-immune-response-to-microbial-infection
#18
Francesca Di Cara, Avinash Sheshachalam, Nancy E Braverman, Richard A Rachubinski, Andrew J Simmonds
The innate immune response is critical for animal homeostasis and is conserved from invertebrates to vertebrates. This response depends on specialized cells that recognize, internalize, and destroy microbial invaders through phagocytosis. This is coupled to autonomous or non-autonomous cellular signaling via reactive oxygen species (ROS) and cytokine production. Lipids are known signaling factors in this process, as the acute phase response of macrophages is accompanied by systemic lipid changes that help resolve inflammation...
July 18, 2017: Immunity
https://www.readbyqxmd.com/read/28723549/interleukin-7-availability-is-maintained-by-a-hematopoietic-cytokine-sink-comprising-innate-lymphoid-cells-and-t%C3%A2-cells
#19
Christopher E Martin, Darina S Spasova, Kwesi Frimpong-Boateng, Hee-Ok Kim, Minji Lee, Kwang Soon Kim, Charles D Surh
Interleukin-7 (IL-7) availability determines the size and proliferative state of the resting T cell pool. However, the mechanisms that regulate steady-state IL-7 amounts are unclear. Using experimental lymphopenic mouse models and IL-7-induced homeostatic proliferation to measure IL-7 availability in vivo, we found that radioresistant cells were the source of IL-7 for both CD4(+) and CD8(+) T cells. Hematopoietic lineage cells, although irrelevant as a source of IL-7, were primarily responsible for limiting IL-7 availability via their expression of IL-7R...
July 18, 2017: Immunity
https://www.readbyqxmd.com/read/28723419/nf-%C3%AE%C2%BAb-p65-serine-467-phosphorylation-sensitizes-mice-to-weight-gain-and-tnf%C3%AE-or-diet-induced-inflammation
#20
Tabea Riedlinger, Marleen B Dommerholt, Tobias Wijshake, Janine K Kruit, Nicolette Huijkman, Daphne Dekker, Mirjam Koster, Niels Kloosterhuis, Debby P Y Koonen, Alain de Bruin, Darren Baker, Marten H Hofker, Jan van Deursen, Johan W Jonker, M Lienhard Schmitz, Bart van de Sluis
The NF-κB family of transcription factors is essential for an effective immune response, but also controls cell metabolism, proliferation and apoptosis. Its broad relevance and the high connectivity to diverse signaling pathways require a tight control of NF-κB activity. To investigate the control of NF-κB activity by phosphorylation of the NF-κB p65 subunit, we generated a knock-in mouse model in which serine 467 (the mouse homolog of human p65 serine 468) was replaced with a non-phosphorylatable alanine (S467A)...
July 16, 2017: Biochimica et Biophysica Acta
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