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https://www.readbyqxmd.com/read/28427199/combinatorial-treatment-with-polyi-c-and-anti-il6-enhances-apoptosis-and-suppresses-metastasis-of-lung-cancer-cells
#1
Wai Hoe Lau, Xiphias Ge Zhu, Shamaine Wei Ting Ho, Shu Chun Chang, Jeak Ling Ding
Activation of TLR3 stimulates cancer cell apoptosis and triggers secretion of inflammatory cytokines. PolyI:C, a TLR3 agonist, activates immune cells and regresses metastatic lung cancer in vivo. Although polyI:C reportedly kills lung carcinomas, the mechanism remains elusive. Here, we demonstrated that polyI:C suppressed the proliferation and survival of metastatic (NCI-H358 and NCI-H292) and non-metastatic (A549) lung cancer cells. Notably, A549, NCI-H292 and NCI-H358 which are inducible by polyI:C, expressed low-to-medium level of TLR3 protein, and were susceptible to polyI:C treatment...
March 2, 2017: Oncotarget
https://www.readbyqxmd.com/read/28426688/vancomycin-associated-acute-kidney-injury-a-cross-sectional-study-from-a-single-center-in-china
#2
Kunming Pan, Lingyun Ma, Qian Xiang, Xueying Li, Haixia Li, Ying Zhou, Li Yang, Yimin Cui
OBJECTIVE: The objective of this study was to investigate the current situation of vancomycin (VAN)-associated acute kidney injury (VA-AKI) in China and identify the risk factors for VA-AKI, as well as to comprehensively examine the risk related to concurrent drug use. Further, we assessed the outcomes of patients who developed VA-AKI and the risk factors for these outcomes. Finally, we aimed to provide suggestions for improving the prevention and treatment of VA-AKI in China. METHODS: We conducted a retrospective observational study of inpatients who had been treated with VAN between January 2013 and December 2013 at Peking University First Hospital...
2017: PloS One
https://www.readbyqxmd.com/read/28425667/soft-multifunctional-composites-and-emulsions-with-liquid-metals
#3
REVIEW
Navid Kazem, Tess Hellebrekers, Carmel Majidi
Binary mixtures of liquid metal (LM) or low-melting-point alloy (LMPA) in an elastomeric or fluidic carrier medium can exhibit unique combinations of electrical, thermal, and mechanical properties. This emerging class of soft multifunctional composites have potential applications in wearable computing, bio-inspired robotics, and shape-programmable architectures. The dispersion phase can range from dilute droplets to connected networks that support electrical conductivity. In contrast to deterministically patterned LM microfluidics, LMPA- and LM-embedded elastomer (LMEE) composites are statistically homogenous and exhibit effective bulk properties...
April 20, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28423613/secreted-grp78-activates-egfr-src-stat3-signaling-and-confers-the-resistance-to-sorafeinib-in-hcc-cells
#4
Rui Li, Gu Yanjiao, He Wubin, Wang Yue, Huang Jianhua, Zheng Huachuan, Su Rongjian, Luan Zhidong
Acquired resistance is a common phenomenon for HCC patients who undergone sorafenib treatment, however the mechanism by which acquired resistance develops remains elusive. In this study, we found that GRP78 could be detected in the serum samples of HCC patients and the conditional medium of multiple HCC cell lines, suggesting that GRP78 is secreted by HCC cells. Further studies showed that secreted GRP78 facilitated the proliferation and inhibited the apoptosis induced by sorafenib both in HCC cell lines and in tumor xenografts...
March 21, 2017: Oncotarget
https://www.readbyqxmd.com/read/28423442/-atypical-lipomatous-tumour-of-the-hand
#5
Yasemin Özkan, Öznur Dervis, Matthias Woenckhaus, Ulrich Baum, Steffen Löw
Atypical lipomatous tumours (ALT) are rare semi-malignant adipose tissue tumours with the potential to transform into sarcomas. They may occur throughout the body, although the hands are very rarely involved. We present the case of a 49-year-old man with a lipomatous tumour measuring 8×4 cm at the dorsum of the right thumb. MRI demonstrated an inhomogeneous signal after contrast medium application. The tumour was excised in its entirety. Since histology confirmed the diagnosis of an ALT, the thumb was irradiated...
February 2017: Handchirurgie, Mikrochirurgie, Plastische Chirurgie
https://www.readbyqxmd.com/read/28422344/use-of-blood-pool-agents-with-steady-state-mri-to-assess-the-vascular-system
#6
Avnesh S Thakor, John Chung, Premal Patel, Anthony Chan, Amdad Ahmed, Graeme McNeil, David M Liu, Bruce Forster, Darren Klass
Over the past two decades there have been significant advances in the use of magnetic resonance imaging (MRI) to assess the vascular system. New imaging sequences and improvements in magnet design have enabled the creation of higher spatial resolution images. MRI is now a viable alternative imaging modality when compared to both invasive angiography and computed tomographic angiography. The use of blood pool agents has further facilitated the use of MR angiography (MRA); their high molecular weight allows for lower doses of contrast medium administration while their prolonged presence in the blood stream allows for repeated high-quality volumetric imaging of both the arterial and venous circulation...
April 19, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28421628/comparison-of-the-nephrotoxic-effects-of-iodixanol-versus-iohexol-in-patients-with-chronic-heart-failure-undergoing-coronary-angiography-or-angioplasty
#7
Tao Song, Min Song, Zhiming Ge, Yong Li, Peimiao Shi, Menghan Sun
OBJECTIVES: The aim of this clinical trial is to compare iodixanol with iohexol for the incidence of contrast-induced nephropathy in patients with chronic heart failure with reduced ejection fraction who are currently undergoing coronary angiography or angioplasty. METHODS: The clinical trial included 220 consecutive patients with chronic heart failure with reduced ejection fraction undergoing coronary angiography or angioplasty. Study participants were administered either iodixanol (n = 110) or iohexol (n = 110)...
April 19, 2017: Journal of Interventional Cardiology
https://www.readbyqxmd.com/read/28415737/peroxynitrite-dominates-sodium-nitroprusside-induced-apoptosis-in-human-hepatocellular-carcinoma-cells
#8
Ying-Yao Quan, Yu-Hong Liu, Chun-Mei Lin, Xiao-Ping Wang, Tong-Sheng Chen
This study aims to explore which radicals dominate sodium nitroprusside (SNP)-induced cytotoxicity in human hepatocellular carcinoma (HCC) cells (HepG2 and Hep3B). Exposure of SNP to cell medium produced abundant nitric oxide (NO), superoxide anion (O2•-), hydrogen peroxide (H2O2) and iron ions. SNP potently induced caspases activation, mitochondrial membrane permeabilization and apoptosis in HCC cells. In Hep3B cells, pretreatment with NO scavenger (PTIO) did not prevent SNP-induced cytotoxicity. However, in HepG2 cells, SNP-induced cytotoxicity was prevented significantly by pretreatment with PTIO and O2•- scavenger, and especially was almost completely blocked by pretreatment with FeTPPS (peroxynitrite scavenger)...
March 13, 2017: Oncotarget
https://www.readbyqxmd.com/read/28415368/role-of-thermal-disequilibrium-on-natural-convection-in-porous-media-insights-from-pore-scale-study
#9
Hamid Karani, Christian Huber
The present study investigates the role of thermal nonequilibrium on natural convection in a fluid-saturated porous medium heated from below. We conduct high-resolution direct numerical simulation at the pore scale in a two-dimensional regular porous structure by means of the thermal lattice-Boltzmann method (LBM). We perform a combination of linear stability analysis of continuum-scale heat transfer models, and pore-scale and continuum-scale simulations to study the role of thermal conductivity contrasts among phases on natural convection...
March 2017: Physical Review. E
https://www.readbyqxmd.com/read/28415239/motility-of-escherichia-coli-in-a-quasi-two-dimensional-porous-medium
#10
Juan Eduardo Sosa-Hernández, Moisés Santillán, Jesús Santana-Solano
Bacterial migration through confined spaces is critical for several phenomena, such as biofilm formation, bacterial transport in soils, and bacterial therapy against cancer. In the present work, E. coli (strain K12-MG1655 WT) motility was characterized by recording and analyzing individual bacterium trajectories in a simulated quasi-two-dimensional porous medium. The porous medium was simulated by enclosing, between slide and cover slip, a bacterial-culture sample mixed with uniform 2.98-μm-diameter spherical latex particles...
March 2017: Physical Review. E
https://www.readbyqxmd.com/read/28414773/the-importance-of-calcium-in-improving-resistance-of-daphnia-to-microcystis
#11
Siddiq Akbar, Jingjing Du, Yong Jia, Xingjun Tian
Changing environmental calcium (Ca) and rising cyanobacterial blooms in lake habitats could strongly reduce Daphnia growth and survival. Here, we assessed the effects of maternal Ca in Daphnia on transfer of resistance to their offspring against Microcystis aeruginosa PCC7806 (M. aeruginosa). Laboratory microcosm experiments were performed to examine effects in Daphnia carinata (D. carinata) and Daphnia pulex (D. pulex), and that how Ca induce responses in their offspring. The results showed that growth and survival were increased in offspring from exposed Daphnia as compared to unexposed, when raised in high Ca and increasing M...
2017: PloS One
https://www.readbyqxmd.com/read/28413862/a-simple-strategy-for-culturing-morphologically-conserved-rat-hypothalamic-tanycytes
#12
Pablo Nicolás De Francesco, Daniel Castrogiovanni, Maia Uriarte, Victoria Frassa, Francina Agosti, Jesica Raingo, Mario Perello
Hypothalamic tanycytes are specialized bipolar ependymal cells that line the floor of the third ventricle. Given their strategic location, tanycytes are believed to play several key functions including being a selective barrier and controlling the amount of hypothalamic-derived factors reaching the anterior pituitary. The in vitro culture of these cells has proved to be difficult. Here, we report an improved method for the generation of primary cultures of rat hypothalamic tanycytes. Ependymal cultures were derived from tissue dissected out of the median eminence region of 10-day-old rats and cultured in a chemically defined medium containing DMEM:F12, serum albumin, insulin, transferrin and the antibiotic gentamycin...
April 17, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28413720/direct-imaging-of-app-proteolysis-in-living-cells
#13
Niccoló Parenti, Ambra Del Grosso, Claudia Antoni, Marco Cecchini, Renato Corradetti, Francesco S Pavone, Martino Calamai
Alzheimer's disease is a multifactorial disorder caused by the interaction of genetic, epigenetic and environmental factors. The formation of cytotoxic oligomers consisting of Aβ peptide is widely accepted as being one of the main key events triggering the development of Alzheimer's disease. Aβ peptide production results from the specific proteolytic processing of the amyloid precursor protein (APP). Deciphering the factors governing the activity of the secretases responsible for the cleavage of APP is still a critical issue...
2017: PeerJ
https://www.readbyqxmd.com/read/28412871/the-effect-of-oil-and-water-soluble-contrast-medium-in-hysterosalpingography-on-thyroid-function
#14
Shuhei So, Wakasa Yamaguchi, Hiroko Tajima, Takeshi Nakayama, Naoaki Tamura, Naohiro Kanayama, Fumiko Tawara
Hysterosalpingography (HSG) using iodinated contrast medium is X-ray diagnostic test that examines the inside of the uterus and fallopian tubes in infertile women. In this study, we compared thyroid function (thyroid stimulating hormone: TSH and free-T4: FT4 levels) after HSG with an oil-soluble contrast medium (OSCM) and a water-soluble contrast medium (WSCM). One hundred and sixty-four and 94 patients with normal thyroid function received HSG with OSCM and WSCM, respectively. Approximately 25% of the women in the OSCM group developed subclinical hypothyroidism (SCH), whereas only less than 10% of the patients in the WSCM group developed SCH...
April 17, 2017: Gynecological Endocrinology
https://www.readbyqxmd.com/read/28412761/preoperative-assessment-of-hepatocellular-carcinoma-with-split-bolus-combined-phase-contrast-enhanced-computed-tomography
#15
Jian Jiang, Ke Wang, Yufeng Xu, Jianxin Liu, Jingjing Luo, Xin Tao, Xiaoying Wang
BACKGROUND The aim of this study was to investigate the feasibility of a split-bolus combined phase contrast-enhanced computed tomography protocol in evaluation of liver vasculature in hepatocellular carcinoma (HCC) patients for the purpose of surgery guidance. MATERIAL AND METHODS Two groups of patients were recruited for the study: 24 consecutive cases of HCC who underwent multiphasic CT examination, and 22 consecutive cases who afterwards underwent split-bolus combined phase CT examination. The multiphasic protocol included an unenhanced scan and 3 image acquisitions after contrast injection...
April 16, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28412286/beneficial-effects-of-glutathione-supplementation-during-vitrification-of-mouse-oocytes-at-the-germinal-vesicle-stage-on-their-preimplantation-development-following-maturation-and-fertilization-in-vitro
#16
Adel R Moawad, Seang Lin Tan, Teruko Taketo
Oocyte cryopreservation is imperative for assisted reproductive technologies (ART). Although cryopreservation of oocytes at the Metaphase II has been widely used, immature oocytes at the germinal vesicle stage (GV-oocytes) need to be cryopreserved in certain situations such as cancer patients; however, the success rate of embryonic development from the GV-oocytes remains low largely due to the requirement for in vitro maturation (IVM). Our aim was to investigate the effects of glutathione (GSH) supplementation during vitrification and warming of mouse GV-oocytes on the preservation of developmental competence...
April 12, 2017: Cryobiology
https://www.readbyqxmd.com/read/28411158/intrinsic-membrane-properties-and-cholinergic-modulation-of-mouse-basal-forebrain-glutamatergic-neurons-in-vitro
#17
Chun Yang, James T McKenna, Ritchie E Brown
The basal forebrain (BF) controls sleep-wake cycles, attention and reward processing. Compared to cholinergic and GABAergic neurons, BF glutamatergic neurons are less well understood, due to difficulties in identification. Here, we use vesicular glutamate transporter 2 (vGluT2)-tdTomato mice, expressing a red fluorescent protein (tdTomato) in the major group of BF glutamatergic neurons (vGluT2+) to characterize their intrinsic electrical properties and cholinergic modulation. Whole-cell, patch-clamp recordings were made from vGluT2+ neurons in coronal BF slices...
April 11, 2017: Neuroscience
https://www.readbyqxmd.com/read/28411127/preventing-false-negatives-in-the-in-vitro-skin-sensitization-testing-of-acid-anhydrides-using-interleukin-8-release-assays
#18
Kazuto Narita, Phuc Thi Hong Vo, Kenta Yamamoto, Hajime Kojima, Hiroshi Itagaki
In vitro safety tests may be used as replacements for animal tests owing to their accuracy and high-throughput performance. However, several in vitro skin sensitization tests produce false-negative results such as acid anhydride. Here, we investigated the relationship between false-negative results of acid anhydride and its hydrolysis by aqueous vehicle. Differences in the pattern of hydrolysis for phthalic anhydride (PAH) due to addition of 1 drop of stock solution of PAH in liquid paraffin (LP) dispersion medium and PAH in DMSO were analyzed in a cell-free system...
April 11, 2017: Toxicology in Vitro: An International Journal Published in Association with BIBRA
https://www.readbyqxmd.com/read/28409733/endovascular-management-of-acute-epidural-hematomas-clinical-experience-with-80-cases
#19
Carlos Michel A Peres, Jose Guilherme M P Caldas, Paulo Puglia, Almir F de Andrade, Igor A F da Silva, Manoel J Teixeira, Eberval G Figueiredo
OBJECTIVE Small acute epidural hematomas (EDHs) treated conservatively carry a nonmeasurable risk of late enlargement due to middle meningeal artery (MMA) lesions. Patients with EDHs need to stay hospitalized for several days, with neurological supervision and repeated CT scans. In this study, the authors analyzed the safety and efficacy of the embolization of the involved MMA and associated lesions. METHODS The study group consisted of 80 consecutive patients harboring small- to medium-sized EDHs treated by MMA embolization between January 2010 and December 2014...
April 14, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28409258/impact-of-knowledge-based-iterative-model-reconstruction-on-myocardial-late-iodine-enhancement-in-computed-tomography-and-comparison-with-cardiac-magnetic-resonance
#20
Yuki Tanabe, Teruhito Kido, Akira Kurata, Naoki Fukuyama, Takahiro Yokoi, Tomoyuki Kido, Teruyoshi Uetani, Mani Vembar, Amar Dhanantwari, Shinichi Tokuyasu, Natsumi Yamashita, Teruhito Mochizuki
We evaluated the image quality and diagnostic performance of late iodine enhancement computed tomography (LIE-CT) with knowledge-based iterative model reconstruction (IMR) for the detection of myocardial infarction (MI) in comparison with late gadolinium enhancement magnetic resonance imaging (LGE-MRI). The study investigated 35 patients who underwent a comprehensive cardiac CT protocol and LGE-MRI for the assessment of coronary artery disease. The CT protocol consisted of stress dynamic myocardial CT perfusion, coronary CT angiography (CTA) and LIE-CT using 256-slice CT...
April 13, 2017: International Journal of Cardiovascular Imaging
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