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https://www.readbyqxmd.com/read/29020118/susceptibility-of-different-mouse-strains-to-oxaliplatin-peripheral-neurotoxicity-phenotypic-and-genotypic-insights
#1
Paola Marmiroli, Beatrice Riva, Eleonora Pozzi, Elisa Ballarini, Dmitry Lim, Alessia Chiorazzi, Cristina Meregalli, Carla Distasi, Cynthia L Renn, Sara Semperboni, Lavinia Morosi, Federico A Ruffinatti, Massimo Zucchetti, Susan G Dorsey, Guido Cavaletti, Armando Genazzani, Valentina A Carozzi
Peripheral neurotoxicity is one of the most distressing side effects of oxaliplatin therapy for cancer. Indeed, most patients that received oxaliplatin experience acute and/or chronic severe sensory peripheral neuropathy. However, despite similar co-morbidities, cancer stage, demographics and treatment schedule, patients develop oxaliplatin-induced peripheral neurotoxicity with remarkably different severity. This suggests individual genetic variability, which might be used to glean the mechanistic insights into oxaliplatin neurotoxicity...
2017: PloS One
https://www.readbyqxmd.com/read/29018959/invariant-natural-killer-t-infiltration-in-neuroblastoma-with-favorable-outcome
#2
Tomoro Hishiki, Naoko Mise, Kazuaki Harada, Fumie Ihara, Mariko Takami, Takeshi Saito, Keita Terui, Mitsuyuki Nakata, Shugo Komatsu, Hideo Yoshida, Shinichiro Motohashi
BACKGROUND: Tumor immunity has been suggested to play a key role in clinical and biological behavior of neuroblastomas. Given that CD1-restricted invariant natural killer T (iNKT) cells enhance both innate and acquired tumor immunity, we investigated the expression of the iNKT-cell-specific T-cell receptor Vα24-Jα18 in neuroblastoma tissues and its correlation with clinical and biological characteristics. METHODS: Using real- time quantitative PCR, we quantified the expression of Vα24-Jα18 in untreated tumor samples from 107 neuroblastoma cases followed in our institution and analyzed the correlation between the presence of infiltrated iNKT cells and clinical characteristics or patients' outcome...
October 10, 2017: Pediatric Surgery International
https://www.readbyqxmd.com/read/28993516/mechanisms-of-the-innate-defense-regulator-peptide-1002-anti-inflammatory-activity-in-a-sterile-inflammation-mouse-model
#3
Bing Catherine Wu, Amy Huei-Yi Lee, Robert E W Hancock
Innate defense regulator (IDR) peptide-1002 is a synthetic host defense peptide derivative with strong anti-inflammatory properties. Extending previous data, IDR-1002 suppressed in vitro inflammatory responses in RAW 264.7 murine monocyte/macrophage cells challenged with the TLR4 agonist LPS and TLR2 agonists lipoteichoic acid and zymosan. To investigate the anti-inflammatory mechanisms of IDR-1002 in vivo, the PMA-induced mouse ear inflammation model was used. Topical IDR-1002 treatment successfully dampened PMA-induced ear edema, proinflammatory cytokine production, reactive oxygen and nitrogen species release, and neutrophil recruitment in the ears of CD1 mice...
October 9, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28987802/american-lobster-cathepsin-d-an-aspartic-peptidase-resistant-to-proteolysis-and-active-in-organic-solvents-non-ionic-detergents-and-salts
#4
Ivan Rodriguez-Siordia, Liliana Rojo-Arreola, Maria de Los Angeles Navarrete Del Toro, Fernando García-Carreño
Suitable peptidases for biotechnological applications are those active at low temperature, in organic solvents, detergents or proteolytic additives. American lobster cathepsin D1 (CD1) is an enzyme highly efficient at 5-50°C and at pH 2.5-5.5. We assessed the effect of common industrial additives on CD1 activity. CD1 was isolated from lobster gastric fluid by chromatography. The proteolytic activity was measured using a fluorogenic specific substrate and the conformation by intrinsic fluorescence. Non-ionic detergents Tween-20 and Triton X-100 stabilize the peptidase activity...
October 5, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28982136/augmentation-of-vamp-catalytic-activity-of-botulinum-neurotoxin-serotype-b-does-not-result-in-increased-potency-in-physiological-systems
#5
Mark Elliott, Jacquie Maignel, Sai Man Liu, Christine Favre-Guilmard, Imran Mir, Paul Farrow, Fraser Hornby, Sandra Marlin, Shilpa Palan, Matthew Beard, Johannes Krupp
Botulinum neurotoxins (BoNTs) are used extensively as therapeutic agents. Serotypes A and B are available as marketed products. Higher doses of BoNT/B are required to reach an efficacy similar to that of products containing BoNT/A. Advances in our understanding of BoNT/B mechanism of action have afforded the opportunity to make rational modifications to the toxin aimed at increasing its activity. Recently, a mutation in the light chain of BoNT/B (S201P) was described that increases the catalytic activity of the isolated BoNT/B light chain in biochemical assays...
2017: PloS One
https://www.readbyqxmd.com/read/28981189/in-vivo-assessment-of-the-placental-anatomy-and-perfusion-in-a-mouse-model-of-intrauterine-inflammation
#6
Dan Wu, Jun Lei, Bei Jia, Han Xie, Yan Zhu, Jiadi Xu, Susumu Mori, Jiangyang Zhang, Irina Burd
BACKGROUND: Magnetic resonance imaging (MRI) provides useful markers to examine placental function. MRI features of placental injury due to intrauterine inflammation-a common risk during pregnancy, are not well known. PURPOSE: To investigate the capability of structural MRI and intravoxel incoherent motion (IVIM) imaging in examining acute placental injury in a mouse model of intrauterine inflammation, as well as gestation-dependent placental changes. STUDY TYPE: Prospective study...
October 5, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28970722/pharmacological-evaluation-of-nsaid-induced-gastropathy-as-a-translatable-model-of-referred-visceral-hypersensitivity
#7
Michele Hummel, Terri Knappenberger, Meghan Reilly, Garth T Whiteside
AIM: To evaluate whether non-steroidal anti-inflammatory drugs (NSAIDs)-induced gastropathy is a clinically predictive model of referred visceral hypersensitivity. METHODS: Gastric ulcer pain was induced by the oral administration of indomethacin to male, CD1 mice (n = 10/group) and then assessed by measuring referred abdominal hypersensitivity to tactile application. A diverse range of pharmacological mechanisms contributing to the pain were subsequently investigated...
September 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28967123/antidepressant-like-effects-of-bu10119-a-novel-buprenorphine-analogue-with-mixed-kappa-mu-opioid-receptor-antagonist-properties-in-mice
#8
Abdulrahman Almatroudi, Mehrnoosh Ostovar, Christopher P Bailey, Stephen M Husbands, Sarah J Bailey
BACKGROUND AND PURPOSE: Κ-opioid receptor antagonists have potential for treating neuropsychiatric disorders. We have investigated the in vivo pharmacology of a novel buprenorphine analogue, BU10119, for the first time. EXPERIMENTAL APPROACH: To determine the opioid pharmacology of BU10119 (0.3-3 mg/kg, i.p.) in vivo, the warm-water tail withdrawal assay was used in adult male CD1 mice. A range of behavioural paradigms was used to investigate the locomotor effects, rewarding properties and antidepressant or anxiolytic potential of BU10119...
October 1, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28965967/evaluation-of-nanoparticles-as-oral-vehicles-for-immunotherapy-against-experimental-peanut-allergy
#9
Ana Brotons-Canto, Carlos Gamazo, Nekane Martín-Arbella, Muthanna Abdulkarim, Jose Matías, Mark Gumbleton, Juan M Irache
The aim of this work was to evaluate the potential application of an original oral immunotherapy, based on the use of nanoparticles, against an experimentally induced peanut allergy. In this context, a roasted peanut extract, containing the main allergenic proteins, were encapsulated into poly(anhydride) nanoparticles. The resulting devices (PE-NP) displayed a mean size of about 150nm and a significantly lower surface hydrophobicity than empty nanoparticles (NP). This low hydrophobicity correlated well with a higher in vitro diffusion in pig intestinal mucus than NP and an important in vivo capability to reach the intestinal epithelium and Peyer's patches...
September 28, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28945983/effect-of-lipopolysaccharide-on-the-expression-of-inflammatory-mrnas-and-micrornas-in-the-mouse-oviduct
#10
Katheryn L Cerny, Rosanne A C Ribeiro, Qing Li, James C Matthews, Phillip J Bridges
Infection with Gram-negative bacteria is a major cause of aberrant inflammation in the oviduct; consequences can include tubal-based infertility and/or ectopic pregnancy. Understanding the inflammatory response is necessary for the development of novel treatment options that counter inflammation-induced infertility. The aim of the present study was to determine the effect of intraperitoneal (i.p.) administration of Escherichia coli-derived lipopolysaccharide (LPS) on the acute expression of inflammatory mRNAs and microRNAs (miRNAs) in the oviduct...
September 26, 2017: Reproduction, Fertility, and Development
https://www.readbyqxmd.com/read/28931741/major-urinary-protein-levels-are-associated-with-social-status-and-context-in-mouse-social-hierarchies
#11
Won Lee, Amber Khan, James P Curley
We have previously shown that male mice living in groups of 12 males establish and maintain stable linear social hierarchies with each individual having a defined social rank. However, it is not clear which social cues mice use to signal and recognize their relative social status within their hierarchy. In this study, we investigate how individual social status both in pairs and in groups affects the levels of major urinary proteins (MUPs) and specifically MUP20 in urine. We housed groups of adult outbred CD1 male mice in a complex social environment for three weeks and collected urine samples from all individuals repeatedly...
September 27, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28905714/cross-foster-rederivation-compared-with-antibiotic-administration-in-the-drinking-water-to-eradicate-bordetella-pseudohinzii
#12
Sarah E Clark, Jeanette E Purcell, Xuan Bi, Jeffrey D Fortman
Bordetella pseudohinzii is a microbial agent of potential importance in mice and has confounded pulmonary research at our institution. The purpose of this study was to evaluate cross-foster rederivation and antibiotic administration in the drinking water as methods to eradicate B. pseudohinzii. To evaluate the efficacy of cross-foster rederivation, 29 litters representing 16 strains of mice were cross-fostered from cages positive for B. pseudohinzii to B. pseudohinzii-negative Crl:CD1-Elite surrogate dams. To evaluate antibiotic administration, sulfamethoxazole and trimethoprim (TMS; 0...
January 1, 2017: Journal of the American Association for Laboratory Animal Science: JAALAS
https://www.readbyqxmd.com/read/28903026/differential-expression-of-genes-in-fetal-brain-as-a-consequence-of-maternal-protein-deficiency-and-nematode-infection
#13
Manjurul Haque, Lisa M Starr, Kristine G Koski, Marilyn E Scott
Maternal dietary protein deficiency and gastrointestinal nematode infection during early pregnancy have negative impacts on both maternal placental gene expression and fetal growth in the mouse. Here we used next-generation RNA sequencing to test our hypothesis that maternal protein deficiency and/or nematode infection also alter the expression of genes in the developing fetal brain. Outbred pregnant CD1 mice were used in a 2×2 design with two levels of dietary protein (24% versus 6%) and two levels of infection (repeated sham versus Heligmosomoides bakeri beginning at gestation day 5)...
September 10, 2017: International Journal for Parasitology
https://www.readbyqxmd.com/read/28902897/testing-the-effects-of-sensory-stimulation-as-a-collateral-based-therapeutic-for-ischemic-stroke-in-c57bl-6j-and-cd1-mouse-strains
#14
Aneeka M Hancock, Ron D Frostig
Utilizing a rat model of ischemic stroke, we have previously shown that sensory stimulation can completely protect rats from impending ischemic damage of cortex if this treatment is delivered within the first two hours post-permanent middle cerebral artery occlusion (pMCAo). The current study sought to extend our findings in rats to mice, which would allow new avenues of research not available in rats. Thus, young adult C57BL/6J and CD1 mice were tested for protection from ischemic stroke with the same protective sensory stimulation-based treatment...
2017: PloS One
https://www.readbyqxmd.com/read/28893646/whole-genome-sequence-of-a-carbapenem-resistant-hypermucoviscous-klebsiella-pneumoniae-isolate-swu01-with-capsular-serotype-k47-that-belongs-to-st11-from-a-patient-in-china
#15
Luhua Zhang, Ying Li, Wei Shen, Guangxi Wang, Yingshun Zhou
OBJECTIVES: In recent years, Klebsiella pneumoniae is emerging as a leading cause of nosocomial infection due to the rapid prevalence of multidrug resistant strains, particularly the carbapenem resistant isolates. In this study, we completed the genome sequence of a carbapenem-resistant K. pneumoniae SWU01. METHODS: Antimicrobial susceptibilities and hypermucoviscous phenotype were determined by the disk diffusion method and a positive string test, respectively...
September 8, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28892301/deep-nirs-amplicon-sequencing-of-san-francisco-bay-sediments-enables-prediction-of-geography-and-environmental-conditions-from-denitrifying-community-composition
#16
Jessica A Lee, Christopher A Francis
Denitrification is a dominant nitrogen loss process in the sediments of San Francisco Bay. In this study, we sought to understand the ecology of denitrifying bacteria by using next-generation sequencing (NGS) to survey the diversity of a denitrification functional gene, nirS (encoding cytchrome-cd1 nitrite reductase), along the salinity gradient of San Francisco Bay over the course of a year. We compared our dataset to a library of nirS sequences obtained previously from the same samples by standard PCR cloning and Sanger sequencing, and showed that both methods similarly demonstrated geography, salinity and, to a lesser extent, nitrogen, to be strong determinants of community composition...
September 11, 2017: Environmental Microbiology
https://www.readbyqxmd.com/read/28890367/enhanced-anandamide-signaling-reduces-flight-behavior-elicited-by-an-approaching-robo-beetle
#17
Daniel E Heinz, Andreas Genewsky, Carsten T Wotjak
Our current knowledge of the implications of endocannabinoids in fear and anxiety is largely based on fear conditioning paradigms and approach-avoidance conflicts. Here we establish the ethobehavioral beetle mania task (BMT), which confronts mice with an erratically moving robo-beetle. With the help of this task we demonstrate decreased tolerance yet increased avoidance responses to an approaching beetle in high-anxiety behavior (HAB) and BALBc mice compared to C57BL/6N, CD1 and normal-anxiety behavior (NAB) mice...
September 7, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28888327/vicarious-social-defeat-stress-induces-depression-related-outcomes-in-female-mice
#18
Sergio D Iñiguez, Francisco J Flores-Ramirez, Lace M Riggs, Jason B Alipio, Israel Garcia-Carachure, Mirella A Hernandez, David O Sanchez, Mary Kay Lobo, Peter A Serrano, Stephen H Braren, Samuel A Castillo
BACKGROUND: Stress is a prevailing risk factor for mood-related illnesses, wherein women represent the majority of those affected by major depression. Despite the growing literature suggesting that affective disorders can arise after a traumatic event is vicariously experienced, this relationship remains understudied in female subjects at the preclinical level. Thus, the objective of the current investigation was to examine whether exposure to emotional and/or psychological stress (ES) mediates depression-related outcomes in female mice...
July 29, 2017: Biological Psychiatry
https://www.readbyqxmd.com/read/28865682/purification-of-trypanosoma-cruzi-metacyclic-trypomastigotes-by-ion-exchange-chromatography-in-sepharose-deae-a-novel-methodology-for-host-pathogen-interaction-studies
#19
Lissa Cruz-Saavedra, Marina Muñoz, Cielo León, Manuel Alfonso Patarroyo, Gabriela Arevalo, Paula Pavia, Gustavo Vallejo, Julio César Carranza, Juan David Ramírez
Metacyclic trypomastigotes are essential for the understanding of the biology of Trypanosoma cruzi, the agent of Chagas disease. However, obtaining these biological stages in axenic medium is difficult. Techniques based on charge and density of the parasite during different stages have been implemented, without showing a high efficiency in the purification of metacyclic trypomastigotes. So far, there is no protocol implemented where sepharose-DEAE is used as a resin. Therefore, herein we tested its ability to purify metacyclic trypomastigotes in Liver Infusion Triptose (LIT) medium cultures...
November 2017: Journal of Microbiological Methods
https://www.readbyqxmd.com/read/28856531/pro-neurogenic-memory-enhancing-and-anti-stress-effects-of-df302-a-novel-fluorine-gamma-carboline-derivative-with-multi-target-mechanism-of-action
#20
Tatyana Strekalova, Nataliia Bahzenova, Alexander Trofimov, Angelika G Schmitt-Böhrer, Nataliia Markova, Vladimir Grigoriev, Vladimir Zamoyski, Tatiana Serkova, Olga Redkozubova, Daria Vinogradova, Alexei Umriukhin, Vladimir Fisenko, Christina Lillesaar, Elena Shevtsova, Vladimir Sokolov, Alexey Aksinenko, Klaus-Peter Lesch, Sergey Bachurin
A comparative study performed in mice investigating the action of DF302, a novel fluoride-containing gamma-carboline derivative, in comparison to the structurally similar neuroprotective drug dimebon. Drug effects on learning and memory, emotionality, hippocampal neurogenesis and mitochondrial functions, as well as AMPA-mediated currents and the 5-HT6 receptor are reported. In the step-down avoidance and fear-conditioning paradigms, bolus administration of drugs at doses of 10 or 40 mg/kg showed that only the higher dose of DF302 improved long-term memory while dimebon was ineffective at either dosage...
August 30, 2017: Molecular Neurobiology
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