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https://www.readbyqxmd.com/read/29774108/prognostic-and-diagnostic-impact-of-fibrinogen-neutrophil-to-lymphocyte-ratio-and-platelet-to-lymphocyte-ratio-on-thymic-epithelial-tumors-outcome
#1
Stefan Janik, Thomas Raunegger, Philipp Hacker, Bahil Ghanim, Elisa Einwallner, Leonhard Müllauer, Ana-Iris Schiefer, Julia Moser, Walter Klepetko, Hendrik Jan Ankersmit, Bernhard Moser
Background: Peripheral blood-derived inflammation-based markers, such as Neutrophil-to-Lymphocyte Ratio (NLR), Platelet-to-Lymphocyte Ratio (PLR), and Fibrinogen have been identified as prognostic markers in various solid malignancies. Here we aimed to investigate the prognostic and diagnostic impact of NLR, PLR, and Fibrinogen in patients with thymic epithelial tumors (TETs). Results: Pretreatment Fibrinogen serum concentrations, NLRs and PLRs were highest in patients with TCs and advanced tumor stages...
April 24, 2018: Oncotarget
https://www.readbyqxmd.com/read/29772405/a-transcriptomic-comparison-of-theca-and-granulosa-cells-in-chicken-and-cattle-follicles-reveals-esr2-as-a-potential-regulator-of-cyp19a1-expression-in-the-theca-cells-of-chicken-follicles
#2
Ruoxi Jing, Lantao Gu, Jinqiu Li, Yanzhang Gong
Previous studies have shown that theca and granulosa cell layers in follicles do not play the same roles in mammals and birds, especially regarding the synthesis of estrogen. The functions of these two cell types have been well characterized in cattle, but they remain unclear in chickens. To clarify this issue, a comparison of small yellow follicles (SYFs) in chickens and cattle at different follicular development stages was done by weighted gene co-expression network analysis (WGCNA). The modules obtained from WGCNA were used for further identification of the key genes associated with CYP19A1 expression...
April 28, 2018: Comparative Biochemistry and Physiology. Part D, Genomics & Proteomics
https://www.readbyqxmd.com/read/29769380/pneumococcal-metabolic-adaptation-and-colonization-are-regulated-by-the-two-component-regulatory-system-08
#3
Alejandro Gómez-Mejia, Gustavo Gámez, Stephanie Hirschmann, Viktor Kluger, Hermann Rath, Sebastian Böhm, Franziska Voss, Niamatullah Kakar, Lothar Petruschka, Uwe Völker, Reinhold Brückner, Ulrike Mäder, Sven Hammerschmidt
Streptococcus pneumoniae two-component regulatory systems (TCS) enable adaptation and ensure its maintenance in host environments. This study deciphers the impact of TCS08 on pneumococcal gene expression and its role in metabolic and pathophysiological processes. Transcriptome analysis and real-time PCR demonstrated a regulatory effect of TCS08 on genes involved mainly in environmental information processing, intermediary metabolism, and colonization by S. pneumoniae D39 and TIGR4. Striking examples are genes for fatty acid biosynthesis, genes of the arginine deiminase system, and the psa operon encoding the manganese ABC transport system...
June 27, 2018: MSphere
https://www.readbyqxmd.com/read/29769379/activation-of-bacterial-histidine-kinases-insights-into-the-kinetics-of-the-cis-autophosphorylation-mechanism
#4
Gaurav D Sankhe, Narendra M Dixit, Deepak K Saini
Two-component signaling systems (TCSs) are central to bacterial adaptation. However, the mechanisms underlying the reactions involving TCS proteins and their reaction rates are largely undetermined. Here, we employed a combined experimental and theoretical approach to elucidate the kinetics of autophosphorylation of three histidine kinases (HKs) of Mycobacterium tuberculosis , viz. , MtrB, PrrB, and PhoR, all known to play a role in regulating its virulence. Using wild-type and mutant proteins, we performed dimerization assays, thermophoretic-affinity measurements, and competition-based phosphorylation assays to establish that for HK, MtrB autophosphorylation occurs in cis , similar to what has been proposed for the PhoR and PrrB HKs...
June 27, 2018: MSphere
https://www.readbyqxmd.com/read/29752570/polyethyleneimine-capped-bimetallic-au-pt-nanoclusters-are-a-viable-fluorescent-probe-for-specific-recognition-of-chlortetracycline-among-other-tetracycline-antibiotics
#5
Na Xu, Lei Meng, Hong-Wei Li, Da-Yong Lu, Yuqing Wu
A highly selective method has been developed for the fluorometric determination of chlortetracycline (CTC) among other tetracycline antibiotics (TCs). It is making use of fluorescent Au/Pt nanoclusters (NCs) capped with polyethyleneimine (Au/PtNCs@PEI). The nanoprobe, with a green emission peaking at 512 nm, was synthesized by an environmentally friendly hydrothermal method. The capped NCs have a large Stokes shift (∼150 nm), are insensitive to extreme pH values and high ionic strength, and are excellently photostable under UV irradiation...
May 11, 2018: Mikrochimica Acta
https://www.readbyqxmd.com/read/29750666/pd-l1-immunohistochemistry-assay-concordance-in-urothelial-carcinoma-of-the-bladder-and-hypopharyngeal-squamous-cell-carcinoma
#6
Anjelica Hodgson, Elzbieta Slodkowska, Achim Jungbluth, Stanley K Liu, Danny Vesprini, Danny Enepekides, Kevin Higgins, Nora Katabi, Bin Xu, Michelle R Downes
Programmed death ligand-1 (PD-L1) immunohistochemistry is used to guide treatment decisions regarding the use of checkpoint immunotherapy in the management of urothelial carcinoma of the bladder and hypopharyngeal (HP) squamous cell carcinoma. With increasing PD-L1 testing options, a need has arisen to assess the analytical comparability of diagnostic assays in order to develop a more sustainable testing strategy. Using tissue microarrays, PD-L1 expression in tumor cells (TCs) and immune cells (ICs) was manually scored in 197 cases and 27 cases of bladder and HP cancer, respectively...
May 10, 2018: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/29747396/beta-estradiol-regulates-voltage-gated-calcium-channels-and-estrogen-receptors-in-telocytes-from-human-myometrium
#7
Adela Banciu, Daniel Dumitru Banciu, Cosmin Catalin Mustaciosu, Mihai Radu, Dragos Cretoiu, Junjie Xiao, Sanda Maria Cretoiu, Nicolae Suciu, Beatrice Mihaela Radu
Voltage-gated calcium channels and estrogen receptors are essential players in uterine physiology, and their association with different calcium signaling pathways contributes to healthy and pathological conditions of the uterine myometrium. Among the properties of the various cell subtypes present in human uterine myometrium, there is increasing evidence that calcium oscillations in telocytes (TCs) contribute to contractile activity and pregnancy. Our study aimed to evaluate the effects of beta-estradiol on voltage-gated calcium channels and estrogen receptors in TCs from human uterine myometrium and to understand their role in pregnancy...
May 9, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29744446/an-in-vivo-study-on-the-effect-of-coating-stability-on-osteointegration-performance-of-collagen-hyaluronic-acid-multilayer-modified-titanium-implants
#8
Haiyong Ao, Jiajia Zong, Yanjiao Nie, Yizao Wan, Xiebin Zheng
Aseptic loosening of implant is one of the main causes of Ti-based implant failure. In our previous work, a novel stable collagen/hyaluronic acid (Col/HA) multilayer modified titanium coatings (TCs) was developed by layer-by-layer (LBL) covalent immobilization technique, which showed enhanced biological properties compared with TCs that were physically absorbed with Col/HA multilayer in vitro . In this study, a rabbit model with femur condyle defect was employed to compare the osteointegration performance of them...
March 2018: Bioactive Materials
https://www.readbyqxmd.com/read/29736781/combination-of-rs-fmri-and-smri-data-to-discriminate-autism-spectrum-disorders-in-young-children-using-deep-belief-network
#9
Maryam Akhavan Aghdam, Arash Sharifi, Mir Mohsen Pedram
In recent years, the use of advanced magnetic resonance (MR) imaging methods such as functional magnetic resonance imaging (fMRI) and structural magnetic resonance imaging (sMRI) has recorded a great increase in neuropsychiatric disorders. Deep learning is a branch of machine learning that is increasingly being used for applications of medical image analysis such as computer-aided diagnosis. In a bid to classify and represent learning tasks, this study utilized one of the most powerful deep learning algorithms (deep belief network (DBN)) for the combination of data from Autism Brain Imaging Data Exchange I and II (ABIDE I and ABIDE II) datasets...
May 7, 2018: Journal of Digital Imaging: the Official Journal of the Society for Computer Applications in Radiology
https://www.readbyqxmd.com/read/29736007/effects-of-high-intensity-interval-training-on-fatigue-and-quality-of-life-in-testicular-cancer-survivors
#10
Scott C Adams, Darren S DeLorey, Margie H Davenport, Adrian S Fairey, Scott North, Kerry S Courneya
BACKGROUND: Testicular cancer survivors (TCS) are at increased risk of cancer-related fatigue (CRF), psychosocial impairment, and poor mental health-related quality of life (HRQoL). Here, we examine the effects of high-intensity interval training (HIIT) on patient-reported outcomes (PROs) in TCS. Secondarily, we explore cardiorespiratory fitness as a mediator of intervention effects and select baseline characteristics as moderators of intervention effects. METHODS: TCS (n = 63) were randomly assigned to 12 weeks of supervised HIIT or usual care (UC)...
May 8, 2018: British Journal of Cancer
https://www.readbyqxmd.com/read/29729733/ratiometric-system-based-on-graphene-quantum-dots-and-eu-3-for-selective-detection-of-tetracyclines
#11
Wenying Li, Jiacheng Zhu, Guochong Xie, Yukun Ren, Yue-Qing Zheng
In this study, a system was established for the detection of tetracyclines (TCs) by simply mixing graphene quantum dots (GQDs) and Eu3+ . The GQDs-Eu3+ system exhibits both strong emission of GQDs and weak characteristic emission of Eu3+ upon 360 nm excitation. In the presence of TCs, the luminescence of GQDs was quenched, while the luminescence of Eu3+ was significantly enhanced. It is worth to mention that the GQDs we prepared possess a lot of carboxyl groups on the surface and edge. This carboxyl groups play an important role in fluorescent enhancement of Eu3+ ...
August 31, 2018: Analytica Chimica Acta
https://www.readbyqxmd.com/read/29728969/occurrence-distribution-and-seasonal-variation-of-antibiotics-in-an-artificial-water-source-reservoir-in-the-yangtze-river-delta-east-china
#12
Changzheng Cui, Qi Han, Lei Jiang, Lei Ma, Lei Jin, Dong Zhang, Kuangfei Lin, Tianyang Zhang
This study investigated the occurrence and variation of 11 antibiotics (including four sulfonamides (SAs), four fluoroquinolones (FQs), two tetracyclines (TCs), and one macrolide (ML)) and one SA synergist trimethoprim (TMP) in an artificial drinking water source reservoir in Yangtze River delta of East China. Water samples were collected each month from January to November in 2014 at the water inlet and outlet site of the reservoir. Sulfamethoxazole, sulfadiazine, and norfloxacin were detected with the high frequencies of 100, 92...
May 4, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29728555/prosthetic-rehabilitation-using-a-telescopic-crown-constructed-with-computer-assisted-design-and-computer-assisted-manufacturing-a-case-report-with-a-2-year-follow-up
#13
Nasser M Al Ahmari
Aim and background: This case report describes a 74-year-old female patient whose teeth were rehabilitated using telescopic crowns (TCs) on abutments and fixed dental prostheses (FDPs) in the maxillary arch with the aid of computer-assisted design and computer-assisted manufacturing (CAD/CAM) technology. The mandibular arch was restored using casted removable dental prostheses (RDPs) and surveyed crowns. Case report: The treatment sequences were followed as recommended in the dental literature. First, existing defective restorations were eliminated, caries was removed, and excellent mouth preparation was performed...
April 1, 2018: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/29727454/differential-polarization-of-cortical-pyramidal-neuron-dendrites-through-weak-extracellular-fields
#14
Florian Aspart, Michiel W H Remme, Klaus Obermayer
The rise of transcranial current stimulation (tCS) techniques have sparked an increasing interest in the effects of weak extracellular electric fields on neural activity. These fields modulate ongoing neural activity through polarization of the neuronal membrane. While the somatic polarization has been investigated experimentally, the frequency-dependent polarization of the dendritic trees in the presence of alternating (AC) fields has received little attention yet. Using a biophysically detailed model with experimentally constrained active conductances, we analyze the subthreshold response of cortical pyramidal cells to weak AC fields, as induced during tCS...
May 4, 2018: PLoS Computational Biology
https://www.readbyqxmd.com/read/29725723/occurrence-and-ecological-risk-assessment-of-eight-endocrine-disrupting-chemicals-in-urban-river-water-and-sediments-of-south-china
#15
Cong Huang, Liu-Hong Wu, Guo-Qiang Liu, Lei Shi, Ying Guo
Chemicals in the water of urban areas are representative of the occurrence of these chemicals in the city surrounding water systems and reflect recent human or industrial usage of those chemicals in the sampling areas. In this study, the levels of eight endocrine-disrupting chemicals [including bisphenol analogues, parabens, and triclosan (TCS)] were determined in urban river water and sediments in Guangzhou, South China, and their related ecological risks were evaluated. The eight target chemicals were frequently detected in our samples, with concentrations ranging from not detected (ND) to 65,600 ng/L and from ND to 492 ng/g dw in river water and sediments, respectively...
May 3, 2018: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/29724455/telocytes-in-human-fetal-skeletal-muscle-interstitium-during-early-myogenesis
#16
Mirca Marini, Mirko Manetti, Irene Rosa, Lidia Ibba-Manneschi, Eleonora Sgambati
A new peculiar stromal cell type called telocyte (TC)/CD34-positive stromal cell (i.e. cell with distinctive prolongations named telopodes) has recently been described in various tissues and organs, including the adult skeletal muscle interstitium of mammals. By forming a resident stromal three-dimensional network, TCs have been suggested to participate in different physiological processes within the skeletal muscle tissue, including homeostasis maintenance, intercellular signaling, tissue regeneration/repair and angiogenesis...
April 30, 2018: Acta Histochemica
https://www.readbyqxmd.com/read/29722443/biomonitoring-of-bisphenol-a-triclosan-and-perfluorooctanoic-acid-in-hair-samples-of-children-and-adults
#17
Vasiliki Karzi, Manolis N Tzatzarakis, Elena Vakonaki, Thanasis Alegakis, Ioanna Katsikantami, Stavros Sifakis, Apostolos Rizos, Aristidis M Tsatsakis
Bisphenol A (BPA), triclosan (TCS) and perfluorooctanoic acid (PFOA) are endocrine disruptors linked with negative health effects such as developmental, reproductive and cardiovascular toxicity. The aim of this study was to determine simultaneously the concentration of BPA, TCS and PFOA in hair from children and adults and examine possible associations between biomonitoring data and age, gender, dietary habits and body mass index. Methanolic extraction was applied and the compounds were determined by liquid chromatography-mass spectrometry...
May 3, 2018: Journal of Applied Toxicology: JAT
https://www.readbyqxmd.com/read/29720116/vista-expression-associated-with-cd8-confers-a-favorable-immune-microenvironment-and-better-overall-survival-in-hepatocellular-carcinoma
#18
Ming Zhang, Hua-Jin Pang, Wei Zhao, Yu-Fa Li, Li-Xu Yan, Zhong-Yi Dong, Xiao-Feng He
BACKGROUND: Hepatocellular carcinoma (HCC) often arises in the setting of chronic inflammation with multiple inhibitory immune signals. V-domain Ig suppressor of T cell activation (VISTA) is identified as a novel negative checkpoint regulator. This study sought to determine the expression and prognostic value of VISTA in HCC and classify tumor microenvironments (TMEs) based on VISTA and CD8+ tumor-infiltrating lymphocytes (TILs). METHODS: The expression of VISTA and CD8 proteins was assessed in 183 HCC tissue microarrays (TMAs) by immunohistochemistry (IHC)...
May 2, 2018: BMC Cancer
https://www.readbyqxmd.com/read/29719540/a-novel-phop-phoq-regulation-pathway-modulates-the-survival-of-extraintestinal-pathogenic-escherichia-coli-in-macrophages
#19
Xiangkai Zhuge, Yu Sun, Feng Xue, Fang Tang, Jianluan Ren, Dezhi Li, Juanfang Wang, Min Jiang, Jianjun Dai
The extraintestinal pathogenic Escherichia coli (ExPEC) is a typical facultative intracellular bacterial pathogen. Sensing the environmental stimuli and undertaking adaptive change are crucial for ExPEC to successfully colonize in specific extraintestinal niches. The previous studies show that pathogens exploit two-component systems (TCSs) in response to the host environments during its infection. The PhoP/PhoQ is a typical TCS which is ubiquitous in Gram-negative bacteria. However, there is an incompletely understanding about critical regulatory roles of PhoP/PhoQ in ExPEC pathogenesis...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29717430/biochemical-and-life-cycle-effects-of-triclosan-chronic-toxicity-to-earthworm-eisenia-fetida
#20
Jurate Zaltauskaite, Diana Miskelyte
The study aimed at determining the response of adult Eisenia fetida earthworms to chronic exposure to triclosan (TCS) (10-750 mg kg-1 ) in soil. TCS life cycle toxicity was evaluated by the means of survival, growth rate, and reproduction assessment. Biochemical responses including changes in the activity of antioxidative enzymes (catalase, superoxide dismutase, and glutathione reductase) and concentration of malondialdehyde (MDA) were determined. Significant reduction in the earthworm survival was observed only if the exposure to TCS was longer than 4 weeks...
May 2, 2018: Environmental Science and Pollution Research International
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