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https://www.readbyqxmd.com/read/27915418/in-vivo-cns-infection-model-of-acanthamoeba-genotype-t4-the-early-stages-of-infection-lack-presence-of-host-inflammatory-response-and-are-a-slow-and-contact-dependent-process
#1
Maritza Omaña-Molina, Dolores Hernandez-Martinez, Raquel Sanchez-Rocha, Ulises Cardenas-Lemus, Citlaltepetl Salinas-Lara, Adolfo Rene Mendez-Cruz, Laura Colin-Barenque, Patricia Aley-Medina, Jesus Espinosa-Villanueva, Leticia Moreno-Fierros, Jacob Lorenzo-Morales
This study was developed in order to describe the early morphological events observed during the invasion of two pathogenic strains of Acanthamoeba (genotype T4); A. castellanii and A. culbertsoni, at the olfactory meatus and cerebral, pulmonary, renal, hepatic and splenic tissues levels, an in vivo invasion study. Histological and immunohistochemical description of the events at 24, 48, 72, and 96 h postintranasal inoculations of BALB/c mice was performed. A. castellanii showed a higher invasion rate than A...
December 3, 2016: Parasitology Research
https://www.readbyqxmd.com/read/27915233/molecular-basis-for-the-autonomous-promotion-of-cell-proliferation-by-angiogenin
#2
Trish T Hoang, Ronald T Raines
Canonical growth factors act indirectly via receptor-mediated signal transduction pathways. Here, we report on an autonomous pathway in which a growth factor is internalized, has its localization regulated by phosphorylation, and ultimately uses intrinsic catalytic activity to effect epigenetic change. Angiogenin (ANG), a secreted vertebrate ribonuclease, is known to promote cell proliferation, leading to neovascularization as well as neuroprotection in mammals. Upon entering cells, ANG encounters the cytosolic ribonuclease inhibitor protein, which binds with femtomolar affinity...
December 2, 2016: Nucleic Acids Research
https://www.readbyqxmd.com/read/27915185/anti-inflammatory-analgesic-and-anti-tumor-properties-of-gold-nanoparticles
#3
Raimundo Fernandes de Araújo, Aurigena Antunes de Araújo, Jonas Bispo Pessoa, Franscisco Paulo Freire Neto, Gisele Ribeiro da Silva, Ana Luiza C S Leitão Oliveira, Thaís Gomes de Carvalho, Heloiza F O Silva, Mateus Eugênio, Celso Sant'Anna, Luiz H S Gasparotto
BACKGROUND: Gold nanoparticles (GNPs) are regarded as potential platforms for drug delivery. However, their interaction with live organisms must be understood prior to their utilization as drug carriers. The present study reports the anti-inflammatory, analgesic and anti-tumor effects of GNPs. The biodistribution of GNPs and their effect on various tissues have also been studied. METHODS: GNPs were synthesized through an environmentally friendly route and characterized with TEM and UV-vis...
September 21, 2016: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/27915106/insights-gained-from-ancient-biomolecules-into-past-and-present-tuberculosis-a-personal-perspective
#4
REVIEW
Helen D Donoghue
Ancient and historical tuberculosis (TB) can be recognized by its typical paleopathology in human remains. Using paleomicrobiology, it is possible to detect many more individuals infected with TB but with no visible lesions. Due to advances in molecular analysis over the past two decades, it is clear that TB was widespread in humans from the Neolithic period until the present day. Past human populations were associated with different lineages of the Mycobacterium tuberculosis (MTB) complex, thereby elucidating early human migrations...
November 30, 2016: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/27915098/organic-liquid-mobility-induced-by-smoldering-remediation
#5
L Kinsman, J L Torero, J I Gerhard
Laboratory column experiments plus analytical and numerical modeling together suggest that, under certain conditions, downward organic liquid mobilization can occur and impact smoldering behavior. This applies for organic liquids mixed with inert sand subjected to smoldering as thermal treatment. The observed effects include increased peak temperatures (here by up to 35%) and increased treatment times (here by up to 30%). Downward organic liquid migration occurs when (i) injected Darcy air flux is less than a threshold value (here less than 3cm/s), (ii) treatment systems are tall (here 90cm, not 30cm), and (iii) the organic liquid is temperature-sensitive (viscosity less than 0...
November 18, 2016: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/27915032/reelin-expression-is-up-regulated-in-mice-colon-in-response-to-acute-colitis-and-provides-resistance-against-colitis
#6
Ana E Carvajal, María D Vázquez-Carretero, Pablo García-Miranda, María J Peral, María L Calonge, Anunciación A Ilundain
Reelin is an extracellular matrix protein first known for its key role in neuronal migration. Studies in rodent small intestine suggested that reelin protects the organism from intestinal pathology. Here we determined in mice colon, by real time-PCR and immunological assays, the expression of the reelin signalling system; its response to dextran sulphate sodium (DSS) and the response of wild-type and reeler mice to DSS. DNA methylation was determined by bisulfite modification and sequencing of genomic DNA. In the colon mucosa reelin expression is restricted to the myofibroblasts, whereas both epithelial cells and myofibroblasts express reelin receptors (ApoER2 and VLDLR) and its effector protein Dab1...
November 30, 2016: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/27914985/combination-therapy-with-doxorubicin-loaded-galactosylated-poly-ethyleneglycol-lithocholic-acid-to-suppress-the-tumor-growth-in-an-orthotopic-mouse-model-of-liver-cancer
#7
Bijay Singh, Yoonjeong Jang, Sushila Maharjan, Hyeon-Jeong Kim, Ah Young Lee, Sanghwa Kim, Nomundelger Gankhuyag, Myeon-Sik Yang, Yun-Jaie Choi, Myung-Haing Cho, Chong-Su Cho
Despite advances in technology, neither conventional anti-cancer drugs nor current nanoparticle (NP) drugs have gained substantial success in cancer treatment. While conventional chemotherapy drugs have several limitations such as low potency, poor in vivo stability and limited bioavailability, non-specific targeting of NP drugs diminishes their potency at actual target sites. In addition, the development of drug resistance to anti-cancer drugs is another challenging problem. To overcome these limitations, we aimed to develop a polymer-drug conjugate, which functions as an active NP drug and drug carrier both, to deliver a chemotherapeutic drug for combination therapy...
November 24, 2016: Biomaterials
https://www.readbyqxmd.com/read/27914826/ezrin-expression-is-altered-in-mice-lymphatic-metastatic-hepatocellular-carcinoma-and-subcellular-fractions-upon-annexin-7-modulation-in-vitro
#8
Ahmed Musa Hago, Yaser Gamallat, Salma Abdi Mahmoud, Yuhong Huang, Jun Zhang, Yousra Khidir Mahmoud, Jingwen Wang, Yuanyi Wei, Li Wang, Shuting Zhou, Mohammed Ameen Awsh, Iddrisu Baba Yabasin, Jianwu Tang
Ezrin and Annexin seven (A7) have been suggested to be involved in several roles in cancers metastasis. However, the role of Ezrin and the effect of A7 on Ezrin expression in lymphatic metastatic hepatocellular carcinoma (LNM-HCC) have not been extensively explored yet. This study reports expression of Ezrin in high lymphatic metastasis (Hca-F >70%) and low metastatic metastasis (Hca-P <30%) HCC cell lines, and the effect of A7 on Ezrin expression. Real-Time PCR, Western blot, Subcellular fractionation, Immunocytochemistry and Immunofluorescence were used to investigate Ezrin expression in addition to migration and invasion behaviors of A7 up-regulated Hca-F cells, A7 down-regulated Hca-P and in their respective negative control (NC) cells...
November 30, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27914823/rapamycin-inhibits-the-proliferation-of-endothelial-cells-in-hemangioma-by-blocking-the-mtor-fabp4-pathway
#9
Ying Wang, Jiarui Chen, Weiqing Tang, Yanping Zhang, Xiaoyan Li
FABP4 is widely expressed in both normal and pathologic tissues. It promotes cell proliferation, survival and migration of endothelial cells, and therefore, angiogenesis. However, the role of FABP4 in hemangioma or hemangioma endothelial cells (HemECs) has not been explored. In this study, we investigated whether FABP4 directly regulates the proliferation of HemECs. The expression of cell cycle checkpoint genes was analyzed with the microarray data of human dermal microvascular endothelial cells (HDVECs) and infantile hemangioma endothelial cells...
November 30, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27914788/claudin-6-enhances-cell-invasiveness-through-claudin-1-in-ags-human-adenocarcinoma-gastric-cancer-cells
#10
A C Torres-Martínez, J F Gallardo-Vera, A N Lara-Holguin, L F Montaño, E P Rendón-Huerta
Claudins participate in tissue barrier function. The loss of this barrier is associated to metalloproteases-related extracellular matrix and basal membranes degradation. Claudin-1 is a pro-MMP-2 activator and claudin-6 transfected AGS (AGS-Cld6) cells are highly invasive. Our aim was to determine if claudin-6 was direct or indirectly associated with MMP-2 activation and cell invasiveness. Cytofluorometry, cell fractioning, immunoprecipitation, gelatin-zymography, cell migration and invasiveness assays were performed, claudin-2, -6, -7 and -9 transfected AGS cells, anti-MMP-2, -9 and -14, anti-claudins specific antibodies and claudin-1 small interfering RNA were used...
November 30, 2016: Experimental Cell Research
https://www.readbyqxmd.com/read/27914787/elevation-of-yap-promotes-the-epithelial-mesenchymal-transition-and-tumor-aggressiveness-in-colorectal-cancer
#11
Hsiang-Hsi Ling, Chih-Chia Kuo, Bo-Xing Lin, Yen-Hua Huang, Cheng-Wei Lin
Tumor metastasis is the leading cause of death in cancer patients. Identifying metastatic biomarkers in tumor cells would help cancer diagnoses and the development of therapeutic targets. Yes-associated protein (YAP) plays an important role in organ development and has gained much attention in tumorigenesis. However, the role of YAP and the underlying mechanism in tumor metastasis of colorectal cancer (CRC) is still unclear. In this study, we generated metastatic 116-LM cells from the HCT116 CRC cell line. We found that the capacity for tumor aggressiveness was elevated in 116-LM cells and identified that YAP and its mRNA level were upregulated in 116-LM cells...
November 30, 2016: Experimental Cell Research
https://www.readbyqxmd.com/read/27914660/radiographic-and-clinical-results-of-tension-suture-fixation-using-two-washers-with-philos-plate-for-proximal-humeral-fractures
#12
Chul-Hyun Cho, Du Han Kim, Beom-Soo Kim
INTRODUCTION: The purpose of this study was to evaluate the radiographic and clinical results of tension suture fixation using two washers with PHILOS plate (Synthes, West Chester, PA, USA) for proximal humeral fractures. PATIENTS AND METHODS: Consecutive 39 patients were included and divided into two groups of adequate and inadequate medial support (MS (+) group vs MS (-) group). The mean follow-up period was 45months (range: 26-69 months). The mean age at the time of surgery was 59 years (range: 17-86 years) and there were 12 men and 27 women...
November 28, 2016: Injury
https://www.readbyqxmd.com/read/27914640/assessing-the-fugitive-emission-of-ch4-via-migration-along-fault-zones-comparing-potential-shale-gas-basins-to-non-shale-basins-in-the-uk
#13
I M Boothroyd, S Almond, F Worrall, R J Davies
This study considered whether faults bounding hydrocarbon-bearing basins could be conduits for methane release to the atmosphere. Five basin bounding faults in the UK were considered: two which bounded potential shale gas basins; two faults that bounded coal basins; and one that bounded a basin with no known hydrocarbon deposits. In each basin, two mobile methane surveys were conducted, one along the surface expression of the basin bounding fault and one along a line of similar length but not intersecting the fault...
September 24, 2016: Science of the Total Environment
https://www.readbyqxmd.com/read/27914563/differential-effects-of-testosterone-and-estradiol-on-clitoral-function-an-experimental-study-in-rats
#14
Paolo Comeglio, Ilaria Cellai, Sandra Filippi, Chiara Corno, Francesca Corcetto, Annamaria Morelli, Elena Maneschi, Elisa Maseroli, Edoardo Mannucci, Massimiliano Fambrini, Mario Maggi, Linda Vignozzi
INTRODUCTION: Female sexual response is a complex phenomenon in which psychological, neurologic, and vascular mechanisms and hormonal factors interact. During the arousal phase, they cooperate to increase genital blood flow, thus inducing engorgement of the clitoris and lubrication of the vagina. Regulation of vascular and non-vascular smooth muscle tone is the crucial event in the erectile process. Preclinical studies have suggested that nitric oxide (NO) is the main vasodilator neurotransmitter modulating, through the second messenger cyclic guanosine monophosphate (cGMP), clitoral flow vessels...
December 2016: Journal of Sexual Medicine
https://www.readbyqxmd.com/read/27914516/leukotriene-b4-induces-emt-and-vimentin-expression-in-panc-1-pancreatic-cancer-cells-involvement-of-blt2-via-erk2-activation
#15
You Ri Kim, Mi Kyung Park, Gyeong Jin Kang, Hyun Ji Kim, Eun Ji Kim, Hyun Jung Byun, Moo-Yeol Lee, Chang Hoon Lee
Leukotriene B4 (LTB4) is a leukocyte chemoattractant and plays a major role controlling inflammatory responses including pancreatitis. LTB4 is known to be correlated with cancer progression. LTB4 induces keratin phosphorylation and reorganization by activating extracellular regulated kinase (ERK) in PANC-1 pancreatic cancer cell lines. However, the role of LTB4 in epithelial mesenchymal transition (EMT) and vimentin expression in pancreatic cancer cells is unknown. We examined whether LTB4 induces EMT and vimentin expression by Western blot, si-RNA, and RT-PCR...
December 2016: Prostaglandins, Leukotrienes, and Essential Fatty Acids
https://www.readbyqxmd.com/read/27914403/acoustic-attenuation-imaging-of-tissue-bulk-properties-with-a-priori-information
#16
Fong Ming Hooi, Oliver Kripfgans, Paul L Carson
Attenuation of ultrasound waves traversing a medium is not only a result of absorption and scattering within a given tissue, but also of coherent scattering, including diffraction, refraction, and reflection of the acoustic wave at tissue boundaries. This leads to edge enhancement and other artifacts in most reconstruction algorithms, other than 3D wave migration with currently impractical, implementations. The presented approach accounts for energy loss at tissue boundaries by normalizing data based on variable sound speed, and potential density, of the medium using a k-space wave solver...
September 2016: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/27914330/synergistic-effect-of-p-n-heterojunction-supporting-and-zeolite-nanoparticles-in-enhanced-photocatalytic-activity-of-nio-and-sno2
#17
Hadis Derikvandi, Alireza Nezamzadeh-Ejhieh
Increased photocatalytic activity of NiO and SnO2 was achieved by coupling and supporting of them onto clinoptilolite nanoparticles (NC) via calcination of Ni(II)-Sn(IV) - exchanged NC in photocatalytic degradation of metronidazole (MZ) aqueous solution. XRD, XRF, FTIR, SEM, X-ray mapping, DRS, TEM, BET Cyclic voltammetry and electrochemical impedance spectroscopy techniques (EIS) were used for characterization of samples. Red shift occurred in bang gap energies of the coupled semiconductors with respect to monocomponent one...
November 21, 2016: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/27914291/influence-of-laser-power-on-atom-probe-tomographic-analysis-of-boron-distribution-in-silicon
#18
Y Tu, H Takamizawa, B Han, Y Shimizu, K Inoue, T Toyama, F Yano, A Nishida, Y Nagai
The relationship between the laser power and the three-dimensional distribution of boron (B) in silicon (Si) measured by laser-assisted atom probe tomography (APT) is investigated. The ultraviolet laser employed in this study has a fixed wavelength of 355nm. The measured distributions are almost uniform and homogeneous when using low laser power, while clear B accumulation at the low-index pole of single-crystalline Si and segregation along the grain boundaries in polycrystalline Si are observed when using high laser power (100pJ)...
November 25, 2016: Ultramicroscopy
https://www.readbyqxmd.com/read/27914101/tuc-338-promotes-invasion-and-metastasis-in-colorectal-cancer
#19
Chenghai Wang, Zheng Wang, Jie Zhou, Shuang Liu, Cong Wu, Caihong Huang, Yongling Ding
Ultraconserved regions (UCRs) are non-protein coding gene sequences that are strictly conserved across among different species. Emerging evidence demonstrates that transcribed ultraconserved regions (TUCRs) encoding noncoding RNAs serve as regulators of gene expression. In recent decades, increasing evidence implicates the involvement of UCRs in carcinogenesis. The role of TUC.338 in cervical cancers was an oncogene in previous studies. Until now, the role of TUC.338 in colorectal cancers remains undefined...
December 3, 2016: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/27913942/out-migration-and-attrition-of-physicians-and-dentists-before-and-after-eu-accession-2003-and-2011-the-case-of-hungary
#20
Júlia Varga
This paper employs a large-scale, individual-level, panel dataset to analyse the effect of EU accession on the probability of out-migration on the part of Hungarian physicians and dentists between 2003 and 2011. The study uses event history modelling and competing risk models. The results show that EU accession did not at the time affect the probability of out-migration while after the end of the transitional period of restrictions on the free movement of labour from the new EU member states to Austria and Germany, the probability of doctors' migration increased considerably...
December 2, 2016: European Journal of Health Economics: HEPAC: Health Economics in Prevention and Care
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