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https://www.readbyqxmd.com/read/28454482/effects-of-environmental-factors-and-metallic-electrodes-on-ac-electrical-conduction-through-dna-molecule
#1
S Abdalla, A Obaid, F M Al-Marzouki
BACKGROUND: Deoxyribonucleic acid (DNA) is one of the best candidate materials for various device applications such as in electrodes for rechargeable batteries, biosensors, molecular electronics, medical- and biomedical-applications etc. Hence, it is worthwhile to examine the mechanism of charge transport in the DNA molecule, however, still a question without a clear answer is DNA a molecular conducting material (wire), semiconductor, or insulator? The answer, after the published data, is still ambiguous without any confirmed and clear scientific answer...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28454449/bioinformatics-analysis-of-the-prognostic-value-of-tripartite-motif-28-in-breast-cancer
#2
Ling Hao, Jun Leng, Ruijing Xiao, Tembo Kingsley, Xinran Li, Zhenbo Tu, Xiangyong Yang, Xinzhou Deng, Meng Xiong, Jie Xiong, Qiuping Zhang
Tripartite motif containing 28 (TRIM28) is a transcriptional regulator acting as an essential corepressor for Krüppel-associated box zinc finger domain-containing proteins in multiple tissue and cell types. An increasing number of studies have investigated the function of TRIM28; however, its prognostic value in breast cancer (BC) remains unclear. In the present study, the expression of TRIM28 was identified to be significantly higher in cancerous compared with healthy tissue samples. Furthermore, it was demonstrated that TRIM28 expression was significantly correlated with several clinicopathological characteristics of patients with BC, such as p53 mutation, tumor recurrence and Elston grade of the tumor...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454419/neutrophil-lymphocyte-ratio-predicts-survival-in-pancreatic-neuroendocrine-tumors
#3
Guopei Luo, Chen Liu, He Cheng, Kaizhou Jin, Meng Guo, Yu Lu, Jiang Long, Jin Xu, Quanxing Ni, Jie Chen, Xianjun Yu
Although the prognostic role of neutrophil-lymphocyte ratio (NLR) has been confirmed in a variety of tumors, the prognostic role of NLR in pancreatic neuroendocrine tumors (PNETs) has not been examined. The present study was performed to assess the role of NLR as a prognostic factor in patients with PNETs. Clinical data were retrospectively retrieved from a single institution. The best cut-off value for baseline NLR levels was determined by the receiver operating characteristic (ROC) curve and area under the ROC curve...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454415/stat3-activation-and-risk-of-recurrence-in-meningiomas
#4
Mahlon Johnson, Mary O'Connell, Kevin Walter
Several studies have suggested that activation of signal transducer and activator of transcription 3 (STAT3) is associated with initiation, progression and metastasis of numerous types of malignancy. However, the role of the Janus kinase-interleukin 6-STAT3 signaling pathway in the pathogenesis and recurrence of meningiomas is unknown. The present study evaluated STAT3 activation by western blotting and immunohistochemistry and assessed its association with Ki-67 labeling in 13 cases of meningioma in which frozen tissue and ≥5...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454385/neuroendocrine-differentiation-is-predictive-of-poor-survival-in-patients-with-stage-ii-colorectal-cancer
#5
Yue Liu, Jinjie He, Jinghong Xu, Jun Li, Yurong Jiao, Dikai Bei, Yeting Hu, Haiyan Chen, Qian Xiao, Kefeng Ding
The diagnosis of neuroendocrine differentiation (NED) is made primarily on the basis of ultrastructure and/or immunohistochemistry (IHC). Synaptophysin (Syn) and chromogranin A (CgA) are two important frequently used NED markers in colorectal cancer (CRC). The association between NED and the prognosis of stage II CRC remains controversial. Administration of adjuvant chemotherapy remains challenging for stage II CRC. Identification of reliable factors that improve the selection of patients with stage II CRC at high risk following surgery is of great importance...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454378/prognostic-value-of-intratumoral-carbonic-anhydrase-ix-expression-in-testicular-germ-cell-tumors
#6
Katarina Kalavska, Zuzana Cierna, Michal Chovanec, Martina Takacova, Daniela Svetlovska, Viera Miskovska, Jana Obertova, Patrik Palacka, Jan Rajec, Zuzana Sycova-Mila, Katarina Machalekova, Karol Kajo, Stanislav Spanik, Jozef Mardiak, Pavel Babal, Silvia Pastorekova, Michal Mego
Testicular germ cell tumors (TGCTs) represent a highly curable malignancy, however a small proportion of patients fails to be cured with cisplatin-based chemotherapy. Carbonic anhydrase IX (CA IX) is upregulated by hypoxia in several cancer types and correlates with a poor prognosis. The present translational study evaluated expression and prognostic value of CA IX in TGCTs. Surgical specimens from 228 patients with TGCTs were processed by the tissue microarray method and subjected to immunohistochemistry with the M75 monoclonal antibody...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454316/overexpression-of-n-cadherin-and-%C3%AE-catenin-correlates-with-poor-prognosis-in-patients-with-nasopharyngeal-carcinoma
#7
Hong Sun, Mingyu Liu, Xuewen Wu, Chunguang Yang, Yanni Zhang, Zhenhang Xu, Kelei Gao, Fengjun Wang
An increasing amount of evidence demonstrates that epithelial-mesenchymal transition (EMT) is important in tumor invasion and metastases. The cell-cell adhesion molecule N-cadherin and the Wnt/β-catenin cascade protein β-catenin are two biomarkers of EMT. The present study aimed to measure the expression levels of N-cadherin and β-catenin in samples from patients with nasopharyngeal carcinoma (NPC) and evaluate their prognostic significance. N-cadherin and β-catenin mRNA was evaluated using reverse transcription-quantitative polymerase chain reaction in 26 NPC tissue samples and 8 nasopharyngeal epithelium samples...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454310/downregulation-of-lkb1-promotes-tumor-progression-and-predicts-unfavorable-prognosis-in-patients-with-glioma
#8
Jiehao Huang, Hongwu Chen, Quantang Wei, Ziheng Zhang, Zhiwei Zhong, Yimin Xu
The liver kinase B1 (LKB1)/5'-adenosine monophosphate-activated protein kinase pathway has been reported to facilitate glioma cell growth by improving growth conditions. To investigate the clinical significance of LKB1 in human gliomas western blot analysis and quantitative polymerase chain reaction experiments were performed. The present study demonstrated that LKB1 expression was markedly decreased at the messenger RNA and protein levels in 30 freshly prepared glioma tissues, compared with non-neoplastic brain tissues (P<0...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454245/improving-contrast-enhancement-in-magnetic-resonance-imaging-using-5-aminolevulinic-acid-induced-protoporphyrin-ix-for-high-grade-gliomas
#9
Junkoh Yamamoto, Shingo Kakeda, Tetsuya Yoneda, Shun-Ichiro Ogura, Shohei Shimajiri, Tohru Tanaka, Yukunori Korogi, Shigeru Nishizawa
Magnetic resonance imaging (MRI) with a gadolinium-based contrast agent is the gold standard for high-grade gliomas (HGGs). The compound 5-aminolevulinic acid (5-ALA) undergoes a high rate of cellular uptake, particularly in cancer cells. In addition, fluorescence-guided resection with 5-ALA is widely used for imaging HGGs. 5-ALA is water soluble, while protoporphyrin IX (PpIX) is water insoluble. It was speculated whether converting from 5-ALA to PpIX may relatively increase intracellular water content, and consequently, might enhance the T2 signal intensity in HGG...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454239/downregulation-of-tumor-protein-53-inducible-nuclear-protein-1-expression-in-hepatocellular-carcinoma-correlates-with-poor-prognosis
#10
Yan Deng, Ai-Min Li, Xin-Mei Zhao, Zhang-Juan Song, Si-De Liu
The expression of tumor protein 53-inducible nuclear protein 1 (TP53INP1) is upregulated in certain cancers and downregulated in others. However, its expression in hepatocellular carcinoma (HCC) is not clear. The present study aimed to investigate the expression and prognostic value of TP53INP1 and its association with clinicopathological parameters in HCC. TP53INP1 expression in HCC tissue samples was examined via immunohistochemistry, western blotting and reverse transcription-quantitative polymerase chain reaction...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454235/metabolic-profiling-of-hepatitis-b-virus-related-hepatocellular-carcinoma-with-diverse-differentiation-grades
#11
Lei Zhang, Ya Huang, Mingjian Lian, Zhijuan Fan, Yaqiong Tian, Yufan Wang, Hua Kang, Shuang Liu, Shuye Liu, Tong Li, Zhongqiang Shan
The most effective diagnostic tool for the majority of hepatocellular carcinoma (HCC) patients is determining the differentiation grade of their tumors. However liver biopsies, which are currently the most effective way of determining tumor differentiation grade, have several limitations. The present study was designed to select serum characteristic metabolites that correlate with the differentiation grades of hepatitis B virus (HBV)-related HCC, and so could be used in the clinic as a non-invasive method of differentiating patients with different grades of HCC...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454233/karyopherin-alpha-2-expression-is-a-novel-diagnostic-and-prognostic-factor-for-colorectal-cancer
#12
Lei Yu, Guiyu Wang, Qian Zhang, Li Gao, Rui Huang, Yinggang Chen, Qingchao Tang, Jin Liu, Chunjia Liu, Hongwei Wang, Xishan Wang
Colorectal cancer (CRC) is the fourth most common cancer and the second leading cause of cancer-associated mortality in Western countries. CRC treatment is dependent on the preoperative and postoperative condition of patients. At present, the prognostic value of conventional parameters for the estimation of patient prognosis is limited. The aim of the present study was to investigate the expression of karyopherin α2 (KPNA2) in cancerous and healthy colon tissues and to evaluate the prognostic factors for patients with primary CRC...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454193/-mental-stress-of-professionals-in-residential-care-for-children-and-adolescents
#13
Thea Rau, Jeannine Ohlert, Corinna Seidler, Jörg M Fegert, Marc Allroggen
An increasingly important issue is the mental strain of professionals in residential care for children and adolescents. However, only few studies investigate mental strain and overload of professionals in an educational context in general and even less in youth welfare institutions. The goal of this study was to examine mental strain experiences of professionals with the "Perceived Stress Questionnaire" (PSQ) in youth welfare institutions, as well as to investigate the relationship between age, duration of employment in this work environment and gender of participants...
April 28, 2017: Psychotherapie, Psychosomatik, Medizinische Psychologie
https://www.readbyqxmd.com/read/28454168/laser-waveform-control-of-extreme-ultraviolet-high-harmonics-from-solids
#14
Yong Sing You, Mengxi Wu, Yanchun Yin, Andrew Chew, Xiaoming Ren, Shima Gholam-Mirzaei, Dana A Browne, Michael Chini, Zenghu Chang, Kenneth J Schafer, Mette B Gaarde, Shambhu Ghimire
Solid-state high-harmonic sources offer the possibility of compact, high-repetition-rate attosecond light emitters. However, the time structure of high harmonics must be characterized at the sub-cycle level. We use strong two-cycle laser pulses to directly control the time-dependent nonlinear current in single-crystal MgO, leading to the generation of extreme ultraviolet harmonics. We find that harmonics are delayed with respect to each other, yielding an atto-chirp, the value of which depends on the laser field strength...
May 1, 2017: Optics Letters
https://www.readbyqxmd.com/read/28454045/canadian-harm-reduction-policies-a-comparative-content-analysis-of-provincial-and-territorial-documents-2000-2015
#15
REVIEW
T Cameron Wild, Bernie Pauly, Lynne Belle-Isle, Walter Cavalieri, Richard Elliott, Carol Strike, Kenneth Tupper, Andrew Hathaway, Colleen Dell, Donald MacPherson, Caitlin Sinclair, Kamagaju Karekezi, Benjamin Tan, Elaine Hyshka
BACKGROUND: Access to harm reduction interventions among substance users across Canada is highly variable, and largely within the policy jurisdiction of the provinces and territories. This study systematically described variation in policy frameworks guiding harm reduction services among Canadian provinces and territories as part of the first national multimethod case study of harm reduction policy. METHODS: Systematic and purposive searches identified publicly-accessible policy texts guiding planning and organization of one or more of seven targeted harm reduction services: needle distribution, naloxone, supervised injection/consumption, low-threshold opioid substitution (or maintenance) treatment, buprenorphine/naloxone (suboxone), drug checking, and safer inhalation kits...
April 25, 2017: International Journal on Drug Policy
https://www.readbyqxmd.com/read/28454035/occurrence-and-genetic-diversity-of-cryptosporidium-and-giardia-in-urban-wastewater-treatment-plants-in-north-eastern-spain
#16
Ana Ramo, Emilio Del Cacho, Caridad Sánchez-Acedo, Joaquín Quílez
This study was designed to investigate the presence and removal efficiency of Cryptosporidium and Giardia in wastewater treatment plants at the 20 most populated towns in Aragón (north-eastern Spain). Samples of influent and effluent wastewater and dewatered sewage sludge were collected seasonally from 23 plants and processed according to USEPA Method 1623. All samples from raw and treated wastewater tested positive for Giardia, at an average concentration of 3247±2039cysts/l and 50±28cysts/l, respectively...
April 25, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28454022/quantitative-analysis-of-adsorptive-interactions-of-ionic-and-neutral-pharmaceuticals-and-other-chemicals-with-the-surface-of-escherichia-coli-cells-in-aquatic-environment
#17
Chul-Woong Cho, Jeong-Soo Park, Yufeng Zhao, Yeoung-Sang Yun
Since Escherichia coli is ubiquitous in nature and has been applied to biological, chemical, and environmental processes, molecular-level understanding of adsorptive interactions between chemicals and the bacterial surface is of great importance. To characterise the adsorption properties of the surface of E. coli cells in aquatic environment, the binding affinities (log Kd) of calibration compounds were experimentally measured, and then based on the values and numerically well-defined molecular interaction forces, i...
April 25, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28454009/environmental-risk-assessment-of-effluents-as-a-whole-emerging-contaminant-efficiency-of-alternative-tertiary-treatments-for-wastewater-depuration
#18
B Díaz-Garduño, M G Pintado-Herrera, M Biel-Maeso, J J Rueda-Márquez, P A Lara-Martín, J A Perales, M A Manzano, C Garrido-Pérez, M L Martín-Díaz
Emerging contaminants (ECs) and regulated compounds (RCs) from three different WWTP effluents were measured in the current study. The efficiency of two tertiary treatments, Photobiotreatment (PhtBio) and Multi-Barrier Treatment (MBT), for removing contaminants was determined. Results indicated different percentages of removal depending on the treatment and the origin of the effluent. Risk Quotients (RQs) were determined for different species of algae, Daphnia, and fish. RQ results revealed diverse risk values depending on the bioindicator species...
April 10, 2017: Water Research
https://www.readbyqxmd.com/read/28453918/value-of-brush-cytology-for-optimal-timing-of-liver-transplantation-in-primary-sclerosing-cholangitis
#19
Marko J Vannas, Sonja Boyd, Martti A Färkkilä, Johanna Arola, Helena Isoniemi
BACKGROUND AND AIMS: Primary sclerosing cholangitis is associated with a high risk of cholangiocarcinoma. Here, we investigated the value of surveillance for dysplasia using brush cytology, to determine the optimal timing of liver transplantation in primary sclerosing cholangitis. We compared our preoperative findings, with the final explanted liver histopathology. METHODS: 126 consecutive patients were transplanted for primary sclerosing cholangitis from 1984 to 2012...
May 2017: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/28453882/the-validity-of-the-observed-to-expected-lung-to-head-ratio-in-congenital-diaphragmatic-hernia-in-an-era-of-standardized-neonatal-treatment-a-multicenter-study
#20
Kitty G Snoek, Nina C J Peters, Joost van Rosmalen, Arno F J van Heijst, Alex J Eggink, Esther Sikkel, René M Wijnen, Hanneke IJsselstijn, Titia E Cohen-Overbeek, Dick Tibboel
OBJECTIVE: To assess the predictive value of observed-to-expected lung-to-head ratio (O/E LHR) for survival and chronic lung disease (CLD) in survivors of left-sided congenital diaphragmatic hernia (CDH) in an era of standardized neonatal treatment, and to evaluate the predictive value of the O/E LHR trajectory for survival. METHODS: This retrospective cohort study was performed in two high-volume CDH centers in the Netherlands in prenatally detected, isolated left-sided CDH patients born between 2008-2014...
April 28, 2017: Prenatal Diagnosis
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