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https://www.readbyqxmd.com/read/28339034/the-sirt1-activator-srt1720-attenuates-renal-fibrosis-by-inhibiting-ctgf-and-oxidative-stress
#1
Yunzhuo Ren, Chunyang Du, Yonghong Shi, Jingying Wei, Haijiang Wu, Huixian Cui
The transforming growth factor-β1 (TGF-β1)/connective tissue growth factor (CTGF) pathway plays an important role in the pathogenesis and progression of chronic kidney disease. Oxidative stress is also involved in TGF-β1 signalling. Sirtuin 1 (Sirt1) exerts a number of pleiotropic effects, protecting against renal disease, including inhibiting fibrosis and oxidative metabolism. In this study, we investigated the role of the Sirt1 activator, SRT1720, in unilateral ureteral obstruction (UUO)-induced tubulointerstitial fibrosis and aimed to determine whether this role depends on the inhibition of oxidative stress and the TGF-β1/CTGF pathway...
March 22, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28334953/early-motor-phenotype-detection-in-a-female-mouse-model-of-rett-syndrome-is-improved-by-cross-fostering
#2
Annie Vogel Ciernia, Michael Pride, Blythe Durbin-Johnson, Adriana Noronha, Alene Chang, Dag H Yasui, Jacqueline N Crawley, Janine M LaSalle
Rett syndrome (RTT) is an X-linked neurodevelopmental disorder caused by mutations in the gene encoding methyl CpG binding protein 2 (MeCP2) that occur sporadically in 1:10,000 female births. RTT is characterized by a period of largely normal development followed by regression in language and motor skills at 6-18 months of age. Mecp2 mutant mice recapitulate many of the clinical features of RTT, but the majority of behavioral assessments have been conducted in male Mecp2 hemizygous null mice as offspring of heterozygous dams...
March 11, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28324039/unique-regenerative-mechanism-to-replace-bone-lost-during-dietary-bone-depletion-in-weanling-mice
#3
Matilda H-C Sheng, Kin-Hing William Lau, Ram Lakhan, Abu Shufian Ishtiaq Ahmed, Charles H Rundle, Patra Biswanath, David J Baylink
This study was undertaken to determine the mechanism whereby calcitropic hormones and mesenchymal stem cell progeny changes involved in bone repletion, a regenerative bone process that restores the bone lost to calcium deficiency. To initiate depletion, weanling mice with a mixed C57BL/6 (75%) and CD1 (25%) genetic background were fed a calcium-deficient diet (0.01%) for 14 days. For repletion, the mice were re-fed a control diet containing 1.2% calcium for 14 days. Depletion decreased plasma calcium and increased plasma PTH, 1,25(OH)2D, and CTX...
January 26, 2017: Endocrinology
https://www.readbyqxmd.com/read/28323964/dysregulated-autophagy-in-hepatocytes-promotes-bisphenol-a-bpa-induced-hepatic-lipid-accumulation-in-male-mice
#4
Shumin Yang, Ting Li, Aipin Zhang, Rufei Gao, Chuan Peng, Lulu Liu, Qingfeng Cheng, Mei Mei, Ying Song, Xiaojiao Xiang, Chaodong Wu, Xiaoqiu Xiao, Qifu Li
Context: Accumulating evidence suggests that bisphenol A (BPA) exposure is associated with nonalcoholic fatty liver disease. Disruption of autophagy causes lipid accumulation in hepatocytes. Whether and how BPA regulates autophagy remains to be explored. Objective: We investigated the effect of BPA on autophagy in hepatocytes and examined the influence of BPA-regulated autophagy on hepatic lipid accumulation. Design: Male CD1 mice were treated with BPA for eight weeks, followed by histological and biochemical evaluation of liver lipids and autophagy...
February 21, 2017: Endocrinology
https://www.readbyqxmd.com/read/28303772/physiological-evaluation-of-cooling-devices-in-conjunction-with-personal-protective-ensembles-recommended-for-use-in-west-africa
#5
Tyler Quinn, Jung-Hyun Kim, Amanda Strauch, Tianzhou Wu, Jeffery Powell, Raymond Roberge, Ronald Shaffer, Aitor Coca
OBJECTIVE: Cooling devices (CDs) worn under personal protective equipment (PPE) can alleviate some of the heat stress faced by health care workers responding to the Ebola outbreak in West Africa. METHODS: Six healthy, young individuals were tested while wearing 4 different CDs or no cooling (control) under PPE in an environmental chamber (32°C/92% relative humidity) while walking (3 METs, 2.5 mph, 0% grade) on a treadmill for 60 minutes. Exercise was preceded by a 15-minute stabilization period and a 15-minute donning period...
March 17, 2017: Disaster Medicine and Public Health Preparedness
https://www.readbyqxmd.com/read/28295274/kisspeptin-innervation-of-the-hypothalamic-paraventricular-nucleus-sexual-dimorphism-and-effect-of-estrous-cycle-in-female-mice
#6
Marilena Marraudino, Dèsirèe Miceli, Alice Farinetti, Giovanna Ponti, GianCarlo Panzica, Stefano Gotti
The hypothalamic paraventricular nucleus (PVN) is the major autonomic output area of the hypothalamus and a critical regulatory center for energy homeostasis. The organism's energetic balance is very important for both the regular onset of puberty and regulation of fertility. Several studies have suggested a relationship among neural circuits controlling food intake, energy homeostasis and the kisspeptin peptide. The kisspeptin system is clustered in two main groups of cell bodies [the anterior ventral periventricular region (AVPV) and the arcuate nucleus (ARC)] projecting mainly to gonadotropin-releasing hormone (GnRH) neurons and to a few other locations, including the PVN...
March 14, 2017: Journal of Anatomy
https://www.readbyqxmd.com/read/28294371/icariin-improves-the-sexual-function-of-male-mice-through-the-pi3k-akt-enos-no-signalling-pathway
#7
J Ding, Y Tang, Z Tang, X Zu, L Qi, X Zhang, G Wang
We aimed to investigate the effect and mechanism of icariin on male sexual function. Forty-eight Crl:CD1(ICR) male mice were randomly divided into control, low-, medium- and high-dose icariin group (intragastric administration of 50, 100 and 200 mg/kg/d for 21 days). Mating experiment was then performed at a ratio of 1: 3 (male: female). The mating behaviours of male mice were recorded. The genital indexes and serum testosterone, nitric oxide (NO), hypothalamic dopamine (DA) and 5- hydroxy tryptophan (5-HT) concentrations were measured...
March 15, 2017: Andrologia
https://www.readbyqxmd.com/read/28286213/carbonic-anhydrase-activation-enhances-object-recognition-memory-in-mice-through-phosphorylation-of-the-extracellular-signal-regulated-kinase-in-the-cortex-and-the-hippocampus
#8
Lucas Canto de Souza, Gustavo Provensi, Daniela Vullo, Fabrizio Carta, Andrea Scozzafava, Alessia Costa, Scheila Daiane Schmidt, Maria Beatrice Passani, Claudiu T Supuran, Patrizio Blandina
Rats injected with by d-phenylalanine, a carbonic anhydrase (CA) activator, enhanced spatial learning, whereas rats given acetazolamide, a CA inhibitor, exhibited impairments of fear memory consolidation. However, the related mechanisms are unclear. We investigated if CAs are involved in a non-spatial recognition memory task assessed using the object recognition test (ORT). Systemic administration of acetazolamide to male CD1 mice caused amnesia in the ORT and reduced CA activity in brain homogenates, while treatment with d-phenylalanine enhanced memory and increased CA activity...
March 9, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28279190/imiquimod-has-strain-dependent-effects-in-mice-and-does-not-uniquely-model-human-psoriasis
#9
William R Swindell, Kellie A Michaels, Andrew J Sutter, Doina Diaconu, Yi Fritz, Xianying Xing, Mrinal K Sarkar, Yun Liang, Alex Tsoi, Johann E Gudjonsson, Nicole L Ward
BACKGROUND: Imiquimod (IMQ) produces a cutaneous phenotype in mice frequently studied as an acute model of human psoriasis. Whether this phenotype depends on strain or sex has never been systematically investigated on a large scale. Such effects, however, could lead to conflicts among studies, while further impacting study outcomes and efforts to translate research findings. METHODS: RNA-seq was used to evaluate the psoriasiform phenotype elicited by 6 days of Aldara (5% IMQ) treatment in both sexes of seven mouse strains (C57BL/6 J (B6), BALB/cJ, CD1, DBA/1 J, FVB/NJ, 129X1/SvJ, and MOLF/EiJ)...
March 9, 2017: Genome Medicine
https://www.readbyqxmd.com/read/28278165/indomethacin-counteracts-the-effects-of-chronic-social-defeat-stress-on-emotional-but-not-recognition-memory-in-mice
#10
Aránzazu Duque, Concepción Vinader-Caerols, Santiago Monleón
We have previously observed the impairing effects of chronic social defeat stress (CSDS) on emotional memory in mice. Given the relation between stress and inflammatory processes, we sought to study the effectiveness of the anti-inflammatory indomethacin in reversing the detrimental effects of CSDS on emotional memory in mice. The effects of CSDS and indomethacin on recognition memory were also evaluated. Male CD1 mice were randomly divided into four groups: non-stressed + saline (NS+SAL); non-stressed + indomethacin (NS+IND); stressed + saline (S+SAL); and stressed + indomethacin (S+IND)...
2017: PloS One
https://www.readbyqxmd.com/read/28270006/-effects-of-dietary-monosodium-glutamate-on-gene-expression
#11
Júlia Vanda Jurasek, László Bence Raposa, Andrea Gubicskóné Kisbenedek, Veronika Varga, Zoltán Szabó, Tímea Varjas
INTRODUCTION: Nowadays, the food industry more often uses different type of additives during the food production. AIM: Our aim was to examine the monosodium-glutamate's effect (in animal experiment) on DNA-methyltransferases in gene expression patterns of mRNA levels. MATERIALS AND METHOD: In the investigation we used 24 (n=24) CD1 type female mice. The animals were fed with different equivalent human doses of the tested substance. After autopsy, mRNA was isolated from different tissues (lung, liver, kidney, spleen)...
March 2017: Orvosi Hetilap
https://www.readbyqxmd.com/read/28267688/reduction-of-myocardial-ischemia-reperfusion-injury-by-inhibiting-interleukin-1-alpha
#12
Adolfo G Mauro, Eleonora Mezzaroma, Juan Torrado, Priyanka Kundur, Priyashma Joshi, Kelsey Stroud, Federico Quaini, Costanza A Lagrasta, Antonio Abbate, Stefano Toldo
BACKGROUND: Interleukin-1α (IL-1α) released by dying cells is an alarmin that activates the innate immunity. We hypothesized that after myocardial ischemia-reperfusion (I/R) injury, IL-1α amplifies the myocardial damage by activating the inflammasome and caspase-1. METHODS: Adult male CD1 mice were used. The left anterior descending coronary artery was ligated for 30 minutes, after 24 hours of reperfusion. An IL-1α blocking antibody (15 μg/kg intraperitoneally) or matching vehicle was given after reperfusion...
March 2017: Journal of Cardiovascular Pharmacology
https://www.readbyqxmd.com/read/28243553/electron-energy-relaxation-under-terahertz-excitation-in-cd1-x-zn-x-3as2-dirac-semimetals
#13
Alexandra V Galeeva, Ivan V Krylov, Konstantin A Drozdov, Anatoly F Knjazev, Alexey V Kochura, Alexander P Kuzmenko, Vasily S Zakhvalinskii, Sergey N Danilov, Ludmila I Ryabova, Dmitry R Khokhlov
We demonstrate that measurements of the photo-electromagnetic effect using terahertz laser radiation provide an argument for the existence of highly conductive surface electron states with a spin texture in Dirac semimetals (Cd1-x Zn x )3As2. We performed a study on a range of (Cd1-x Zn x )3As2 mixed crystals undergoing a transition from the Dirac semimetal phase with an inverse electron energy spectrum to trivial a semiconductor with a direct spectrum in the crystal bulk by varying the composition x. We show that for the Dirac semimetal phase, the photo-electromagnetic effect amplitude is defined by the number of incident radiation quanta, whereas for the trivial semiconductor phase, it depends on the laser pulse power, irrespective of wavelength...
2017: Beilstein Journal of Nanotechnology
https://www.readbyqxmd.com/read/28237491/homozygosity-for-the-cd1e-02-allele-is-associated-with-a-resistance-to-plasmodium-falciparum-malaria-infection-in-gabonese-school-children
#14
Landry-Erik Mombo, Francine Ntoumi, Cyrille Bisseye, Rajendranath Ramasawmy, Pascal Millet, Ryad Tamouza
OBJECTIVE: To explore the possible association between polymorphisms in CD1 genes and both asymptomatic and mild Plasmodium falciparum infection. METHODS: Two clusters of 85 school children, from the village of Dienga (Gabon) were investigated. The first group was analysed for the prevalence and the multiplicity of asymptomatic P. falciparum infection, whereas the second group was screened for the frequency of malarial attacks. RESULTS: Our findings showed that homozygosity for the CD1E*02 allele was associated with a low frequency of malarial attacks...
February 2017: Asian Pacific Journal of Tropical Medicine
https://www.readbyqxmd.com/read/28229279/immune-dysfunction-and-increased-oxidative-stress-state-in-diet-induced-obese-mice-are-reverted-by-nutritional-supplementation-with-monounsaturated-and-n-3-polyunsaturated-fatty-acids
#15
Caroline Hunsche, Oskarina Hernandez, Alina Gheorghe, Ligia Esperanza Díaz, Ascensión Marcos, Mónica De la Fuente
PURPOSE: Obesity is associated with impaired immune defences and chronic low levels of inflammation and oxidation. In addition, this condition may lead to premature aging. The aim of the study was to evaluate the effects of a nutritional supplementation with monounsaturated and n-3 polyunsaturated fatty acids on several functions and oxidative stress parameters in peritoneal immune cells of obese mice, as well as on the life span of these animals. METHODS: Obesity was induced in adult female ICR/CD1 by the administration of a high-fat diet (HFD) for 14 weeks...
February 23, 2017: European Journal of Nutrition
https://www.readbyqxmd.com/read/28222836/presumptive-spontaneous-lysosomal-storage-like-disease-in-a-crl-cd1-icr-mouse
#16
Krista M Hernon, Tiffany L Whitcomb, Lori Davis, Timothy K Cooper
A clinically unremarkable 4.5-mo-old female Crl:CD1(ICR) VAF/Elite mouse was euthanized for scheduled sentinel processing. Gross necropsy findings included significant hepatosplenomegaly and visceral lymphadenomegaly, resulting in a preliminary gross diagnosis of lymphoma. Histology revealed florid accumulations of large, 'foamy' macrophages present in the bone marrow, small intestines, and viscera including liver, spleen, lymph nodes, thymus, uterus, and ovaries. The cytoplasm of these cells was abundant, stained pale blue with Wright-Giemsa and was periodic acid-Schiff positive...
February 1, 2017: Comparative Medicine
https://www.readbyqxmd.com/read/28221804/semiconductor-seeded-nanorods-with-graded-composition-exhibiting-high-quantum-yield-high-polarization-and-minimal-blinking
#17
Ido Hadar, John Patrick Philbin, Yossef Efraim Panfil, Shany Neyshtadt, Itai Lieberman, Hagai Eshet, Sorin Lazar, Eran Rabani, Uri Banin
Seeded semiconductor nanorods represent a unique family of quantum confined materials that manifest characteristics of mixed dimensionality. They show polarized emission with high quantum yield and fluorescence switching under an electric field, features that are desirable for use in display technologies and other optical applications. So far, their robust synthesis has been limited mainly to CdSe/CdS heterostructures, thereby constraining the spectral tunability to the red region of the visible spectrum. Herein we present a novel synthesis of CdSe/Cd1-xZnxS seeded nanorods with radially graded composition that show bright and highly polarized green emission with minimal intermittency, as confirmed by ensemble and single nanorods optical measurements...
February 21, 2017: Nano Letters
https://www.readbyqxmd.com/read/28219986/functional-analysis-of-the-transmembrane-and-cytoplasmic-domains-of-pcdh15a-in-zebrafish-hair-cells
#18
Reo Maeda, Itallia V Pacentine, Timothy Erickson, Teresa Nicolson
Protocadherin 15 (PCDH15) is required for mechanotransduction in sensory hair cells as a component of the tip link. Isoforms of PCDH15 differ in their cytoplasmic domains (CD1, CD2, and CD3), but share the extracellular and transmembrane (TMD) domains, as well as an intracellular domain known as the common region (CR). In heterologous expression systems, both the TMD and CR of PCDH15 have been shown to interact with members of the mechanotransduction complex. The in vivo significance of these protein-protein interaction domains of PCDH15 in hair cells has not been determined...
February 20, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28215680/production-of-sperm-from-porcine-fetal-testicular-tissue-after-cryopreservation-and-grafting-into-nude-mice
#19
Hiroyuki Kaneko, Kazuhiro Kikuchi, Nguyen Thi Men, Michiko Nakai, Junko Noguchi, Naomi Kashiwazaki, Junya Ito
A major goal of testicular xenografting is to salvage germ cells from immature animals that cannot be used for reproduction and generate their offspring. In this study, we investigated whether porcine fetal testicular tissue would acquire the ability to produce sperm with full developmental competence after they had been cryopreserved and grafted into nude mice. Testicular fragments from fetuses at 35, 55 and 90 days postartificial insemination (dpi) were vitrified and stored in liquid nitrogen. Immediately after warming, testicular fragments at each fetal stage were transplanted under the back skin of castrated nude mice (Crlj:CD1-Foxn1(nu)) (35-, 55- and 90-dpi groups, respectively) (day 0 = grafting)...
March 15, 2017: Theriogenology
https://www.readbyqxmd.com/read/28214969/attached-and-suspended-denitrifier-communities-in-pristine-limestone-aquifers-harbor-high-fractions-of-potential-autotrophs-oxidizing-reduced-iron-and-sulfur-compounds
#20
M Herrmann, S Opitz, R Harzer, K U Totsche, K Küsel
Oxygen and nitrate availability as well as the presence of suitable organic or inorganic electron donors are strong drivers of denitrification; however, the factors influencing denitrifier abundance and community composition in pristine aquifers are not well understood. We explored the denitrifier community structure of suspended and attached groundwater microorganisms in two superimposed limestone aquifer assemblages with contrasting oxygen regime in the Hainich Critical Zone Exploratory (Germany). Attached communities were retrieved from freshly crushed parent rock material which had been exposed for colonization in two groundwater wells (12...
February 18, 2017: Microbial Ecology
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