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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/28454459/expression-of-cxcl12-and-its-receptor-cxcr4-in-patients-with-adenomyosis
#2
Juan Li, Geping Yin, Ming Chen, Shujun Yang, Aifang Wu, Jing Liang, Zheng Yuan
The aim of the present study was to investigate the role of chemokine (C-X-C motif) ligand 12 (CXCL12) and its receptor, chemokine (C-X-C motif) receptor 4 (CXCR4) in the pathogenesis of adenomyosis (AD). Immunohistochemistry and reverse transcription-quantitative polymerase chain reaction analysis were used to measure the protein and mRNA expression of CXCL12 and CXCR4 in eutopic endometrial and ectopic foci tissue samples. Samples from a total of 36 patients with AD (study group) were compared with endometrial tissue samples from 33 patients who underwent uterine fibroids surgery (control group) during the same period...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454454/chemotherapy-regimen-based-on-sorafenib-combined-with-5-fu-on-hif-1%C3%AE-and-vegf-expression-and-survival-in-advanced-gastric-cancer-patients
#3
Ronghui Cheng, Hongmei Yong, Yunhong Xia, Qingsong Xie, Guangyi Gao, Xueyi Zhou
The present study investigated the effect of combined sorafenib chemotherapy on hypoxia-inducible factor-1α (HIF-1α) and vascular endothelial growth factor (VEGF) expression and survival time of patients with advanced gastric cancer. From January 2010 to December 2011, 92 patients diagnosed with advanced gastric cancer were selected and randomly divided into the treatment group and control group. The treatment group was treated with sorafenib chemotherapy combined with 5-fluorouracil (5-FU), and the control group received 5-FU...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454425/whole-body-low-dose-computed-tomography-in-multiple-myeloma-staging-superior-diagnostic-performance-in-the-detection-of-bone-lesions-vertebral-compression-fractures-rib-fractures-and-extraskeletal-findings-compared-to-radiography-with-similar-radiation-exposure
#4
Lukas Lambert, Petr Ourednicek, Zuzana Meckova, Giampaolo Gavelli, Jan Straub, Ivan Spicka
The primary objective of the present prospective study was to compare the diagnostic performance of conventional radiography (CR) and whole-body low-dose computed tomography (WBLDCT) with a comparable radiation dose reconstructed using hybrid iterative reconstruction technique, in terms of the detection of bone lesions, skeletal fractures, vertebral compressions and extraskeletal findings. The secondary objective was to evaluate lesion attenuation in relation to its size. A total of 74 patients underwent same-day skeletal survey by CR and WBLDCT...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454412/comparison-of-the-seleno-transcriptome-expression-between-human-non-cancerous-mammary-epithelial-cells-and-two-human-breast-cancer-cell-lines
#5
Fabiola Rusolo, Francesca Capone, Raffaella Pasquale, Antonella Angiolillo, Giovanni Colonna, Giuseppe Castello, Maria Costantini, Susan Costantini
Breast cancer is the second most common cause of mortality in women; therefore, the identification of novel putative markers is required to improve its diagnosis and prognosis. Selenium is known to protect mammary epithelial cells from oxidative DNA damage, and to inhibit the initiation phase of carcinogenesis by stimulating DNA repair and apoptosis regulation. Consequently, the present study has focused attention on the selenoprotein family and their involvement in breast cancer. The present study performed a global analysis of the seleno-transcriptome expression in human breast cancer MCF-7 and MDA-MB231 cell lines compared with healthy breast MCF-10A cells using reverse transcription-quantitative polymerase chain reaction...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454401/safety-and-effectiveness-of-localized-lung-resection-combined-with-neoadjuvant-chemotherapy-in-the-treatment-of-stage-i-ii-non-small-cell-lung-cancer
#6
Bing Zhu, Jianru Yang, Pei Zhang, Lin Shen, Xiaolong Li, Jing Li
This study was conducted to evaluate the safety and effectiveness of localized lung resection combined with neoadjuvant chemotherapy in the treatment of stage I-II non-small cell lung cancer (NSCLC). A total of 88 patients, who were admitted to our hospital for first diagnosis and treatment, were selected. The patients were divided into control group (n=40 cases) and observation group (n=48 cases) according to the last digit of the admission number. The control group was treated with minimally invasive localized lung resection by thoracoscope...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454395/notch1-targeted-regulation-of-mir-224-lrig2-signaling-for-the-proliferation-and-apoptosis-of-cervical-cancer-cells
#7
Lanxiang Cong, Fang Zhang, Huaihai Shang
In the present study, we explored the participation of Notch1 targeted regulation of mir-224/LRIG2 gene signal pathway in proliferation and apoptosis of cervical cancer cells. Forty-nine cases of cervical cancer lesion samples from cervical cancer patients treated in our hospital from February 2013 to February 2015 were chosen as subjects (the observation group), and cervical samples of healthy women (42 cases) during the same period were used as the control group. We determined the mRNA and protein expression of Notch1, mir-224, and LRIG2 genes...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454338/ellagic-acid-and-annona-muricata-in-the-chemoprevention-of-hpv-related-pre-neoplastic-lesions-of-the-cervix
#8
Giulia Morosetti, Anna Angela Criscuolo, Flavia Santi, Carlo Federico Perno, Emilio Piccione, Marco Ciotti
Ellagic acid is a phenolic compound naturally present in nuts and berries. Several studies have demonstrated that this bioactive compound has antioxidant, chemopreventive and antiviral activity. Annona muricata is a type of fruit tree with a long history of traditional use. A number of properties have been attributed to different parts of the plant, including anticancer and antioxidant activities. In the current study, a complex based on ellagic acid, Annona Muricata and antioxidant factors (an ellagic acid complex) was administered to a group of human papilloma virus (HPV) infected women with and without cervical lesions, for 12 months...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454313/a-novel-t-9-22-11-translocation-involving-11q24-in-a-patient-with-chronic-myeloid-leukemia-a-case-report
#9
Jaehyeon Lee, Dal Sik Kim, Hye Soo Lee, Sam Im Choi, Yong Gon Cho
Variant Philadelphia chromosome translocations involving chromosomes other than 9 and 22 have been reported in 5-10% of patients with chronic myeloid leukemia (CML). As part of the three-way variant t(9;22;11) in patients with CML, 11q24 is a novel region that has not previously been investigated. A 22-year-old male exhibiting chronic phase CML developed a recurrence of the same phase subsequent to the interruption of imatinib treatment and showed the same chromosomal abnormality, t(9;22;11)(q34;q11.2;q24), that was detected at the initial diagnosis...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454264/luteolin-a-novel-p90-ribosomal-s6-kinase-inhibitor-suppresses-proliferation-and-migration-in-leukemia-cells
#10
Lan Deng, Ling Jiang, Xianghua Lin, Kuo-Fu Tseng, Zhigang Lu, Xiuju Wang
Ribosomal S6 kinases (RSKs) are directly regulated by extracellular signal-regulated kinase (ERK) signaling and are implicated in cell growth, survival, motility and senescence. The present study observed that RSK1 was overexpressed in primary untreated leukemia patient bone marrow samples compared with the expression at the complete remission stage, using reverse transcription-quantitative polymerase chain reaction (RT-qPCR). In addition, a high RSK1 expression (relative expression ≥10) was associated with a significantly shorter overall survival (P=0...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454220/efficacy-of-pegr-1-endostatin-combined-with-ionizing-radiation-on-hypoxic-conditions-in-nude-mice-bearing-skov3-ovarian-carcinoma
#11
Yong-Chun Zhang, Xiu-Mei Li, Zhuang Yu, Xiao-Li Shi, Yong Li, Wan-Lin Wang
Hypoxia occurs in a wide range of solid tumors, and is strongly associated with radio-resistance of malignant tumors. The aim of the present study was to investigate the effect of endostatin combined with ionizing radiation (IR) on hypoxic conditions. A total of 24 mice bearing SKOV3 ovarian carcinoma were divided into three groups. Following injection with pEgr-1-endostatin plasmid for 12 h, the mice in the endostatin-IR-treated group were exposed to 300 cGy/min X-ray for 48 h, and the IR-treated group was exposed to the same condition...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454199/-genetic-diagnostics-for-cardiomyopathies
#12
Frauke Czepluch, Bernd Wollnik, Gerd Hasenfuß
Cardiomyopathies often have a genetic etiology. New genetic diagnostic strategies based on next generation sequencing (NGS)-approaches will continuously increase our knowledge about the genetic basis of cardiomyopathies within the following years. Diagnostics and therapy of rare, genetically-induced cardiac diseases increasingly require special cardiac and genetic knowledge. Interestingly, mutations in the same gene or even identical gene mutations can be associated with different cardiomyopathy phenotypes and can exhibit incomplete penetrance or variable expressivity...
May 2017: Deutsche Medizinische Wochenschrift
https://www.readbyqxmd.com/read/28454189/assessment-of-the-authenticity-of-herbal-dietary-supplements-comparison-of-chemical-and-dna-barcoding-methods
#13
Rahul S Pawar, Sara M Handy, Raymond Cheng, Nicole Shyong, Erich Grundel
About 7 % of the U. S. population reports using botanical dietary supplements. Increased use of such supplements has led to discussions related to their authenticity and quality. Reports of adulteration with substandard materials or pharmaceuticals are of concern because such substitutions, whether inadvertent or deliberate, may reduce the efficacy of specific botanicals or lead to adverse events. Methods for verifying the identity of botanicals include macroscopic and microscopic examinations, chemical analysis, and DNA-based methods including DNA barcoding...
April 28, 2017: Planta Medica
https://www.readbyqxmd.com/read/28454151/high-power-frequency-comb-source-tunable-from-2-7-to-4-2%C3%A2-%C3%A2-%C3%AE-m-based-on-difference-frequency-generation-pumped-by-an-yb-doped-fiber-laser
#14
Grzegorz Soboń, Tadeusz Martynkien, Paweł Mergo, Lucile Rutkowski, Aleksandra Foltynowicz
We demonstrate a broadband mid-infrared (MIR) frequency comb source based on difference frequency generation (DFG) in periodically poled lithium niobate crystal. MIR radiation is obtained via mixing of the output of a 125 MHz repetition rate Yb-doped fiber laser with Raman-shifted solitons generated from the same source in a highly nonlinear fiber. The resulting idler is tunable in the range of 2.7-4.2 μm, with average output power reaching 237 mW and pulses as short as 115 fs. The coherence of the MIR comb is confirmed by spectral interferometry and heterodyne beat measurements...
May 1, 2017: Optics Letters
https://www.readbyqxmd.com/read/28454113/systematic-review-and-meta-analysis-of-the-efficacy-and-safety-of-novel-monoclonal-antibodies-for-treatment-of-relapsed-refractory-multiple-myeloma
#15
REVIEW
Tiantian Zhang, Sen Wang, Tengfei Lin, Jingmei Xie, Lina Zhao, Zhuoru Liang, Yangqiu Li, Jie Jiang
Although two newly launched monoclonal antibodies (mAbs), elotuzumab and daratumumab, performed well in patients with relapsed or relapsed/refractory multiple myeloma (RRMM), their efficacy and safety remain uncertain. We therefore performed a systematic review and meta-analysis of the most recent clinical trials that evaluated elotuzumab and/or daratumumab for the treatment of patients with RRMM. Our meta-analysis included 13 clinical trials with 2,402 patients participating. The overall response rate (ORR) was 57% (95% confidence interval [CI]: 38-76%), and the at least very good partial response rate (VGPR) was 32% (95% CI: 19-46%)...
April 9, 2017: Oncotarget
https://www.readbyqxmd.com/read/28454082/estrogen-promotes-tumor-metastasis-via-estrogen-receptor-beta-mediated-regulation-of-matrix-metalloproteinase-2-in-non-small-cell-lung-cancer
#16
Sheng Fan, Yongde Liao, Changyu Liu, Quanfu Huang, Huifang Liang, Bo Ai, Shegnling Fu, Sheng Zhou
In non-small cell lung cancer (NSCLC), estrogen significantly promotes NSCLC cell growth via estrogen receptor beta (ERβ). However, the effects by which ERβ contributes to metastasis in NSCLC have not been previously reported. This study aims at defining whether the stimulation of ERβ promotes NSCLC metastasis in vitro and in vivo. Here, Our results showed that estrogen and ERβ agonist enhanced aggressiveness of two lung cancer cell lines (A549 and H1793) and promoted murine lung metastasis formation. ER-inhibitor Fulvestrant treatment or ERβ-knockdown significantly suppressed the migration, invasion and nodule formation of NSCLC cells...
April 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/28454036/a-clean-environmental-week-let-the-nature-breathe
#17
Khaled Moustafa
High levels of CO2 emissions in the atmosphere and toxic pollutants in air, water and food have serious repercussions on all life's systems, including living beings, environment and economy. Everyone on the Earth is concerned by pollution in some way or another, no matter where and how the pollution is produced as airborne and foodborne pollutants could circulate around the world in different ways, through for example climate components (wind, rain) and/or import and export of foodstuffs. Similarly to living beings that take advantage of day-night circadian rhythms to recover after diurnal hardships, the environment in its entirety could also be seen as a complex living system that needs regular breaks to assimilate or ingest toxic pollutants produced during intensive and continuous industrial processes...
April 25, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28453991/advocacy-coalitions-and-protected-areas-creation-process-case-study-in-the-amazon
#18
Sandra Nicolle, Maya Leroy
Protected areas are the cornerstones of conservation policies worldwide. However, only few researches are led to analyse the way they emerge, except for criticising top-down governmental choices. Yet, the historical approach and strategic analysis of public policy building over the long term allows a better understanding of the stakes of action capacity of these policies. We therefore mobilize the advocacy coalition framework to show that protected areas creation is always due to coalitions of actors who belong to different professional fields and act at different scales but nevertheless share common stakes...
April 25, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28453970/on-chip-ultrasonic-manipulation-of-microparticles-by-using-the-flexural-vibration-of-a-glass-substrate
#19
Ryota Yamamoto, Daisuke Koyama, Mami Matsukawa
As biotechnology develops, techniques for manipulating and separating small particles such as cells and DNA are required in the life sciences. This paper investigates on-chip manipulation of microparticles in small channels by using ultrasonic vibration. The chip consists of a rectangular glass substrate with a cross-shaped channel (cross-section: 2.0×2.0mm(2)) and four lead zirconate titanate transducers attached to the substrate's four corners. To efficiently generate the flexural vibration mode on the chip, we used finite element analysis to optimize the configurations of the glass substrate and transducers...
December 15, 2016: Ultrasonics
https://www.readbyqxmd.com/read/28453956/molecular-imaging-of-activated-platelets-via-antibody-targeted-ultra-small-iron-oxide-nanoparticles-displaying-unique-dual-mri-contrast
#20
Hang T Ta, Zhen Li, Christoph E Hagemeyer, Gary Cowin, Shaohua Zhang, Jathushan Palasubramaniam, Karen Alt, Xiaowei Wang, Karlheinz Peter, Andrew K Whittaker
Magnetic resonance imaging (MRI) is a powerful and indispensable tool in medical research, clinical diagnosis, and patient care due to its high spatial resolution and non-limited penetration depth. The simultaneous use of positive and negative MRI imaging that employs the same contrast agents will significantly improve detection accuracy. Here we report the development of functional multimodal iron oxide nanoparticles for targeted MRI of atherothrombosis using a combination of chemical and biological conjugation techniques...
April 22, 2017: Biomaterials
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