keyword
MENU ▼
Read by QxMD icon Read
search

Rodents

keyword
https://www.readbyqxmd.com/read/28549058/histone-deacetylase-adaptation-in-single-ventricle-heart-disease-and-a-young-animal-model-of-right-ventricular-hypertrophy
#1
Weston W Blakeslee, Kimberly M Demos-Davies, Douglas D Lemon, Katharina M Lutter, Maria A Cavasin, Sam Payne, Karin Nunley, Carlin S Long, Timothy A McKinsey, Shelley D Miyamoto
BACKGROUNDHistone deacetylase (HDAC) inhibitors are promising therapeutics for various forms of cardiac disease. The purpose of this study was to assess cardiac HDAC catalytic activity and expression in children with single ventricle heart disease of right ventricular morphology (SV), as well as in a rodent model of right ventricular hypertrophy (RVH).METHODSHomogenates of RV explants from non-failing controls and SV children were assayed for HDAC catalytic activity and HDAC isoform expression. Postnatal 1-day old rat pups were placed in hypoxic conditions and echocardiographic analysis, gene expression, HDAC catalytic activity and isoform expression studies of the RV were performed...
May 26, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28548460/internally-generated-hippocampal-sequences-as-a-vantage-point-to-probe-future-oriented-cognition
#2
REVIEW
Giovanni Pezzulo, Caleb Kemere, Matthijs A A van der Meer
Information processing in the rodent hippocampus is fundamentally shaped by internally generated sequences (IGSs), expressed during two different network states: theta sequences, which repeat and reset at the ∼8 Hz theta rhythm associated with active behavior, and punctate sharp wave-ripple (SWR) sequences associated with wakeful rest or slow-wave sleep. A potpourri of diverse functional roles has been proposed for these IGSs, resulting in a fragmented conceptual landscape. Here, we advance a unitary view of IGSs, proposing that they reflect an inferential process that samples a policy from the animal's generative model, supported by hippocampus-specific priors...
May 2017: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/28546505/role-of-cyp2b-in-phenobarbital-induced-hepatocyte-proliferation-in-mice
#3
Lei Li, Xiaochen Bao, Qing-Yu Zhang, Masahiko Negishi, Xinxin Ding
Phenobarbital (PB) promotes liver tumorigenesis in rodents, in part through activation of the constitutive androstane receptor (CAR) and the consequent changes in hepatic gene expression and increases in hepatocyte proliferation. A typical effect of CAR activation by PB is a marked induction of Cyp2b10 expression in the liver; the latter has been suspected to be vital for PB-induced hepatocellular proliferation. This hypothesis was tested here, by using a Cyp2a(4/5)bgs-null (null) mouse model, in which all Cyp2b genes are deleted...
May 25, 2017: Drug Metabolism and Disposition: the Biological Fate of Chemicals
https://www.readbyqxmd.com/read/28546358/autophagy-and-mitophagy-in-cardiovascular-disease
#4
REVIEW
José Manuel Bravo-San Pedro, Guido Kroemer, Lorenzo Galluzzi
Autophagy contributes to the maintenance of intracellular homeostasis in most cells of cardiovascular origin, including cardiomyocytes, endothelial cells, and arterial smooth muscle cells. Mitophagy is an autophagic response that specifically targets damaged, and hence potentially cytotoxic, mitochondria. As these organelles occupy a critical position in the bioenergetics of the cardiovascular system, mitophagy is particularly important for cardiovascular homeostasis in health and disease. Consistent with this notion, genetic defects in autophagy or mitophagy have been shown to exacerbate the propensity of laboratory animals to spontaneously develop cardiodegenerative disorders...
May 26, 2017: Circulation Research
https://www.readbyqxmd.com/read/28546285/anti-inflammatory-effects-and-mechanisms-of-vagal-nerve-stimulation-combined-with-electroacupuncture-in-a-rodent-model-of-tnbs-induced-colitis
#5
Haifeng Jin, Jie Guo, Jiemin Liu, Bin Lyu, Robert D Foreman, Jieyun Yin, Zhaohong Shi, Jiande Dz Chen
The purpose of this study was to determine effects and mechanisms of vagal nerve stimulation (VNS) and additive effects of electroacupuncture (EA) on colonic inflammation in a rodent model of IBD. Chronic inflammation in rats was induced by intrarectal TNBS (2,4,6-Trinitrobenzenesulfonic acid). The rats were then treated with sham-ES (electrical stimulation), VNS or VNS+EA for 3 weeks. Inflammatory responses were assessed by disease activity index (DAI), macroscopic scores and histological scores of colonic tissues, and plasma levels of TNF-α, IL-1β and IL-6, myeloperoxidase (MPO) activity of colonic tissues...
May 25, 2017: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/28545594/early-blockade-of-joint-inflammation-with-a-fatty-acid-amide-hydrolase-inhibitor-decreases-end-stage-osteoarthritis-pain-and-peripheral-neuropathy-in-mice
#6
Jason J McDougall, Milind M Muley, Holly T Philpott, Allison Reid, Eugene Krustev
BACKGROUND: The endocannabinoid system has been shown to reduce inflammatory flares and pain in rodent models of arthritis. A limitation of endocannabinoids is that they are rapidly denatured by hydrolysing enzymes such as fatty acid amide hydrolase (FAAH) which renders them physiologically inert. Osteoarthritis (OA) is primarily a degenerative joint disease; however, it can incorporate mild inflammation and peripheral neuropathy. The aim of this study was to determine whether early blockade of FAAH bioactivity could reduce OA-associated inflammation and joint neuropathy...
May 25, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28545371/if-rodents-could-speak-a-psycho-behavioral-perspective-on-modelling-obsessive-compulsive-disorder-ocd-in-animals-the-role-of-context
#7
De Wet Wolmarans, Dan J Stein, Brian H Harvey
Obsessive-compulsive disorder is a heterogeneous and debilitating condition, characterized by intrusive thoughts and compulsive repetition over several domains of human functioning. Animal models of OCD are important instruments that have the potential to contribute significantly to our understanding of the condition. However, although there is consensus that pre-clinical models are valuable to elucidate the underlying neurobiology in psychiatric disease, the current paper attempts to prompt ideas on how interpretation of animal behavior can be expanded upon to more effectively converge with the human disorder...
May 23, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28545141/prion-pathogenesis-is-unaltered-in-the-absence-of-sirp%C3%AE-mediated-don-t-eat-me-signaling
#8
Mario Nuvolone, Marta Paolucci, Silvia Sorce, Veronika Kana, Rita Moos, Takashi Matozaki, Adriano Aguzzi
Prion diseases are neurodegenerative conditions caused by misfolding of the prion protein, leading to conspicuous neuronal loss and intense microgliosis. Recent experimental evidence point towards a protective role of microglia against prion-induced neurodegeneration, possibly through elimination of prion-containing apoptotic bodies. The molecular mechanisms by which microglia recognize and eliminate apoptotic cells in the context of prion diseases are poorly defined. Here we investigated the possible involvement of signal regulatory protein α (SIRPα), a key modulator of host cell phagocytosis; SIRPα is encoded by the Sirpa gene that is genetically linked to the prion gene Prnp...
2017: PloS One
https://www.readbyqxmd.com/read/28544974/cetuximab-modified-collagen-scaffold-directs-neurogenesis-of-injury-activated-endogenous-neural-stem-cells-for-acute-spinal-cord-injury-repair
#9
Xing Li, Yannan Zhao, Shixiang Cheng, Sufang Han, Muya Shu, Bing Chen, Xuyi Chen, Fengwu Tang, Nuo Wang, Yue Tu, Bin Wang, Zhifeng Xiao, Sai Zhang, Jianwu Dai
Studies have shown that endogenous neural stem cells (NSCs) activated by spinal cord injury (SCI) primarily generate astrocytes to form glial scar. The NSCs do not differentiate into neurons because of the adverse microenvironment. In this study, we defined the activation timeline of endogenous NSCs in rats with severe SCI. These injury-activated NSCs then migrated into the lesion site. Cetuximab, an EGFR signaling antagonist, significantly increased neurogenesis in the lesion site. Meanwhile, implanting cetuximab modified linear ordered collagen scaffolds (LOCS) into SCI lesion sites in dogs resulted in neuronal regeneration, including neuronal differentiation, maturation, myelination, and synapse formation...
May 18, 2017: Biomaterials
https://www.readbyqxmd.com/read/28544613/qtl-and-systems-genetics-analysis-of-mouse-grooming-and-behavioral-responses-to-novelty-in-an-open-field
#10
Anna Delprato, Marie-Paule Algéo, Brice Bonheur, Jason A Bubier, Lu Lu, Robert W Williams, Elissa J Chesler, Wim E Crusio
The open field is a classic test used to assess exploratory behavior, anxiety, and locomotor activity in rodents. Here we mapped quantitative trait loci (QTLs) underlying behaviors displayed in an open field, using a panel of 53 BXD recombinant inbred mouse strains with deep replication (10 per strain and sex). The use of these strains permits the integration and comparison of data obtained in different laboratories, and also offers the possibility to study trait covariance by exploiting powerful bioinformatics tools and resources...
May 24, 2017: Genes, Brain, and Behavior
https://www.readbyqxmd.com/read/28544323/mass-spectrometric-evidence-for-the-modification-of-small-molecules-in-a-cobalt-60-irradiated-rodent-diet
#11
J K Prasain, L S Wilson, A Arabshahi, C Grubbs, S Barnes
The purpose of this study was to investigate the effect of radiation on the content of animal diet constituents using global metabolomics. Aqueous methanolic extracts of control and cobalt-60 irradiated NIH 7001 diets were comprehensively analyzed using nanoLC-MS/MS. Among the over two thousand ions revealed by XCMS followed by data preprocessing, 94 positive and 143 negative metabolite ions had greater than 1.5 fold changes and p-values <0.01. Use of Metaboanalyst statistical software demonstrated complete separation of the irradiated and non-radiated diets in unsupervised principal components analysis and supervised partial least squares discriminant analysis...
May 24, 2017: Journal of Mass Spectrometry: JMS
https://www.readbyqxmd.com/read/28544068/interstitial-fluid-pressure-a-novel-biomarker-to-monitor-photo-induced-drug-uptake-in-tumor-and-normal-tissues
#12
Sabrina Cavin, Xingyu Wang, Matthieu Zellweger, Michel Gonzalez, Michaël Bensimon, Georges Wagnières, Thorsten Krueger, Hans-Beat Ris, Fabrizio Gronchi, Jean Y Perentes
BACKGROUND: Low-dose photodynamic therapy PDT (photoinduction) can modulate tumor vessels and enhance the uptake of liposomal cisplatin (Lipoplatin®) in pleural malignancies. However, the photo-induction conditions must be tightly controlled as overtreatment shuts down tumor vessels and enhances normal tissue drug uptake. MATERIAL AND METHODS: In a pleural sarcoma and adenocarcinoma rat model (n = 12/group), we applied photoinduction (0.0625 mg/kg Visudyne®, 10 J/cm(2) ) followed by intravenous Lipoplatin® (5 mg/kg) administration...
May 22, 2017: Lasers in Surgery and Medicine
https://www.readbyqxmd.com/read/28543567/tgr5-contributes-to-hepatic-cystogenesis-in-rodents-with-polycystic-liver-diseases-via-camp-g%C3%AE-s-signaling
#13
Tatyana V Masyuk, Anatoliy I Masyuk, Maria Lorenzo Pisarello, Brynn N Howard, Bing Q Huang, Pui-Yuen Lee, Xavier Fung, Eduard Sergienko, Robert J Ardesky, Thomas Dy Chung, Anthony B Pinkerton, Nicholas F LaRusso
Hepatic cystogenesis in Polycystic Liver Disease (PLD) is associated with increased levels of cAMP in cholangiocytes lining liver cysts. TGR5, a G protein-coupled bile acid receptor, is linked to cAMP and expressed in cholangiocytes. Therefore, we hypothesized that TGR5 might contribute to disease progression. We examined expression of TGR5 and Gα proteins in cultured cholangiocytes and in livers of animal models and humans with PLD. In vitro, we assessed cholangiocyte proliferation, cAMP levels, and cyst growth in response to: (i) TGR5 agonists [taurolithocholic acid (TLCA), oleanolic acid (OA) and two synthetic compounds]; (ii) a novel TGR5 antagonist (SBI-115); and (iii) a combination of SBI-115 and pasireotide, a somatostatin receptor (SSTR) analog...
May 23, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28543541/human-schwann-cells-exhibit-long-term-cell-survival-are-not-tumorigenic-and-promote-repair-when-transplanted-into-the-contused-spinal-cord
#14
Johana Bastidas, Gagani Athauda, Gabriela De La Cruz, Wai-Man Chan, Roozbeh Golshani, Yerko Berrocal, Martha Henao, Anil Lalwani, Chikato Mannoji, Mazen Assi, P Anthony Otero, Aisha Khan, Alexander E Marcillo, Michael Norenberg, Allan D Levi, Patrick M Wood, James D Guest, W Dalton Dietrich, Mary Bartlett Bunge, Damien D Pearse
The transplantation of rodent Schwann cells (SCs) provides anatomical and functional restitution in a variety of spinal cord injury (SCI) models, supporting the recent translation of SCs to phase 1 clinical trials for human SCI. Whereas human (Hu)SCs have been examined experimentally in a complete SCI transection paradigm, to date the reported behavior of SCs when transplanted after a clinically relevant contusive SCI has been restricted to the use of rodent SCs. Here, in a xenotransplant, contusive SCI paradigm, the survival, biodistribution, proliferation and tumorgenicity as well as host responses to HuSCs, cultured according to a protocol analogous to that developed for clinical application, were investigated...
May 22, 2017: Glia
https://www.readbyqxmd.com/read/28542706/modulatory-features-of-the-novel-spider-toxin-%C3%AE-trtx-df1a-isolated-from-the-venom-of-the-spider-davus-fasciatus
#15
Fernanda C Cardoso, Zoltan Dekan, Jennifer J Smith, Jennifer R Deuis, Irina Vetter, Volker Herzig, Paul F Alewood, Glenn F King, Richard J Lewis
BACKGROUND AND PURPOSE: Naturally occurring dysfunction in NaV channels results in complex disorders such as chronic pain, making these channels an attractive target for new therapies. In the pursuit of novel NaV modulators, we investigated spider venoms for new inhibitors of NaV channels. EXPERIMENTAL APPROACH: We used high-throughput screens to identify a NaV modulator in venom of the spider Davus fasciatus. Further characterization of this venom peptide was undertaken using fluorescent and electrophysiological assays, molecular modeling and a rodent pain model...
May 24, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28542639/rodents-and-humans-are-able-to-detect-the-odour-of-l-lactate
#16
Valentina Mosienko, Andy J Chang, Natalia Alenina, Anja G Teschemacher, Sergey Kasparov
L-Lactate (LL) is an essential cellular metabolite which can be used to generate energy. In addition, accumulating evidence suggests that LL is used for inter-cellular signalling. Some LL-sensitive receptors have been identified but we recently proposed that there may be yet another unknown G-protein coupled receptor (GPCR) sensitive to LL in the brain. Olfactory receptors (ORs) represent the largest family of GPCRs and some of them are expressed outside the olfactory system, including brain, making them interesting candidates for non-olfactory LL signalling...
2017: PloS One
https://www.readbyqxmd.com/read/28542402/evidence-for-pleural-epithelial-mesenchymal-transition-in-murine-compensatory-lung-growth
#17
Alexandra B Ysasi, Willi L Wagner, Cristian D Valenzuela, Arne Kienzle, Andrew B Servais, Robert D Bennett, Akira Tsuda, Maximilian Ackermann, Steven J Mentzer
In many mammals, including rodents and humans, removal of one lung results in the compensatory growth of the remaining lung; however, the mechanism of compensatory lung growth is unknown. Here, we investigated the changes in morphology and phenotype of pleural cells after pneumonectomy. Between days 1 and 3 after pneumonectomy, cells expressing α-smooth muscle actin (SMA), a cytoplasmic marker of myofibroblasts, were significantly increased in the pleura compared to surgical controls (p < .01). Scanning electron microscopy of the pleural surface 3 days post-pneumonectomy demonstrated regions of the pleura with morphologic features consistent with epithelial-mesenchymal transition (EMT); namely, cells with disrupted intercellular junctions and an acquired mesenchymal (rounded and fusiform) morphotype...
2017: PloS One
https://www.readbyqxmd.com/read/28542002/assessment-of-behavioral-disruption-in-rats-with-abdominal-inflammation-using-visual-cue-titration-and-the-five-choice-serial-reaction-time-task
#18
Thomas J Martin, Tracy J Strassburg, Amanda L Grigg, Susy A Kim, Douglas G Ririe, James C Eisenach
BACKGROUND: Both acute and chronic pain result in a number of behavioral symptoms in patients, including cognitive effects such as decreased attention and working memory. Intraperitoneal administration of dilute lactic acid in rodents has been used to induce abdominal inflammation and produce effects in behavioral assays of both sensory-discriminative and affective pain modalities. METHODS: Intraperitoneal injection of dilute lactic acid was used to study the impact of abdominal inflammation on an operant task requiring sustained visual attention in rats (N = 7 to 15/group) that adapts dynamically to performance ability...
May 25, 2017: Anesthesiology
https://www.readbyqxmd.com/read/28541836/description-of-candidatus-bartonella-fadhilae-n-sp-and-candidatus-bartonella-sanaae-n-sp-bartonellaceae-from-dipodillus-dasyurus-and-sekeetamys-calurus-gerbillinae-from-the-sinai-massif-egypt
#19
Mohammed Alsarraf, Eman M E Mohallal, Ewa J Mierzejewska, Jolanta Behnke-Borowczyk, Renata Welc-Falęciak, Małgorzata Bednarska, Lukasz Dziewit, Samy Zalat, Francis Gilbert, Jerzy M Behnke, Anna Bajer
Bartonella spp. are parasites of mammalian erythrocytes and endothelial cells, transmitted by blood-feeding arthropod ectoparasites. Different species of rodents may constitute the main hosts of Bartonella, including several zoonotic species of Bartonella. The aim of this study was to identify and compare Bartonella species and genotypes isolated from rodent hosts from the South Sinai, Egypt. Prevalence of Bartonella infection was assessed in rodents (837 Acomys dimidiatus, 73 Acomys russatus, 111 Dipodillus dasyurus, and 65 Sekeetamys calurus) trapped in 2000, 2004, 2008, and 2012 in four dry montane wadis around St...
May 25, 2017: Vector Borne and Zoonotic Diseases
https://www.readbyqxmd.com/read/28541707/identification-of-a-potent-selective-and-efficacious-phosphatidylinositol-3-kinase-%C3%AE-pi3k%C3%AE-inhibitor-for-the-treatment-of-immunological-disorders
#20
Qingjie Liu, Qing Shi, David Marcoux, Douglas G Batt, Lyndon Cornelius, Lan-Ying Qin, Zheming Ruan, James Neels, Myra Beaudoin Bertrand, Anurag S Srivastava, Ling Li, Robert Joseph Cherney, Hua Gong, Scott H Watterson, Carolyn Weigelt, Kathleen M Gillooly, Kim W McIntyre, Jenny H Xie, Mary T Obermeier, Aberra Fura, Bogdan Sleczka, Kevin Stefanski, R Marcus Fancher, Shweta Padmanabhan, Thatipamula Rp, Ipsit Kundu, Kallem Rajareddy, Rodney Smith, James K Hennan, Dezhi Xing, Jingsong Fan, Paul C Levesque, Qian Ruan, Sidney Pitt, Rosemary Zhang, Donna Pedicord, Jie Pan, Melissa Yarde, Hao Lu, Jonathan Lippy, Christine Goldstine, Stacey Skala, Richard A Rampulla, Arvind Mathur, Anuradha Gupta, Pirama Nayagam Arunachalam, John S Sack, Jodi K Muckelbauer, Mary Ellen Cvijic, Luisa M Salter-Cid, Rajeev S Bhide, Michael A Poss, John Hynes, Percy H Carter, John E Macor, Stefan Ruepp, Gary L Schieven, Joseph A Tino
PI3Kδ plays an important role controlling immune cell function and has therefore been identified as a potential target for the treatment of immunological disorders. This article highlights our work towards the identification of a potent, selective, and efficacious PI3Kδ inhibitor. Through careful SAR, the successful replacement of a polar pyrazole group by a simple chloro or trifluoromethyl group led to improved Caco-2 permeability, reduced Caco-2 efflux, reduced hERG PC activity, and increased selectivity profile while maintaining potency in the CD69 hWB assay...
May 25, 2017: Journal of Medicinal Chemistry
keyword
keyword
21987
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"