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https://www.readbyqxmd.com/read/28431461/impact-of-superparamagnetic-iron-oxide-nanoparticles-on-vocal-fold-fibroblasts-cell-behavior-and-cellular-iron-kinetics
#1
Marina Pöttler, Anna Fliedner, Eveline Schreiber, Christina Janko, Ralf Philipp Friedrich, Christopher Bohr, Michael Döllinger, Christoph Alexiou, Stephan Dürr
PURPOSE: The voice is the most important instrument of communication. Tissue defects in the vocal fold (VF) area lead to serious reduction in quality of life, but thus far, no satisfactory VF implant exists. Therefore, we aim to establish a functional VF implant in a rabbit model by magnetic tissue engineering (MTE) using superparamagnetic iron oxide nanoparticles (SPION). Hence, iron quantification over time as well as cell behavior studies upon SPION treatment are of great importance...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28431455/uhplc-q-tof-ms-ms-based-screening-and-characterization-of-metabolites-of-cnidilin-in-human-liver-microsomes
#2
Lin Yuan, Yuqian Zhang, Man Liao, Yanyan Liu, Changchen Wan, Lantong Zhang
Cnidilin is an active natural furocoumarin ingredient originating from well-known traditional Chinese medicine Radix Angelicae dahuricae. In the present study, an efficient approach was developed for the screening and identification of cnidilin metabolites using ultra-high performance liquid chromatography coupled to quadrupole time-of-flight mass spectrometry. In this approach, an on-line data acquisition method multiple mass defect filter (MMDF) combined with dynamic background subtraction was developed to trace all probable metabolites...
April 21, 2017: Biomedical Chromatography: BMC
https://www.readbyqxmd.com/read/28431450/-livestock-associated-methicillin-resistant-staphylococcus-aureus-epidemiological-data-from-an-orthopaedic-department-in-north-west-germany
#3
Gerrit Steffen Maier, Fritz Thorey, Kristina Kolbow, Djordje Lazovic, Markus Lühmann, Jörg Ohnsorge, Uwe Maus
Background MRSA represents a considerable health threat to orthopaedic patients. Throughout the last decade, livestock-associated MRSA emerged increasingly in livestock all over Europe. LA-MRSA broke the species barrier, colonizing and causing infections in humans. Nevertheless, to date there are no studies concerning livestock-associated MRSA and orthopaedic patients. Therefore, we aimed to investigate the prevalence of LA-MRSA in a regional orthopaedic department localized in an area with high-density livestock...
April 21, 2017: Zeitschrift Für Orthopädie und Unfallchirurgie
https://www.readbyqxmd.com/read/28431436/enhanced-tearing-by-electrical-stimulation-of-the-anterior-ethmoid-nerve
#4
Mark Brinton, Andrea L Kossler, Zara M Patel, James Loudin, Manfred Franke, Christopher N Ta, Daniel Palanker
Purpose: Electrical neurostimulation enhances tear secretion, and can be applied to treatment of dry eye disease. Using a chronic implant, we evaluate the effects of stimulating the anterior ethmoid nerve on the aqueous, lipid, and protein content of secreted tears. Methods: Neurostimulators were implanted beneath the nasal mucosa in 13 New Zealand white rabbits. Stimulations (2.3-2.8 mA pulses of 75-875 μs in duration repeated at 30-100 Hz for 3 minutes) were performed daily, for 3 weeks to measure changes in tear volume (Schirmer test), osmolarity (TearLab osmometer), lipid (Oil-Red-O staining), and protein (BCA assay, mass spectrometry)...
April 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28431431/an-ipsilateral-comparison-of-acceleromyography-and-electromyography-during-recovery-from-nondepolarizing-neuromuscular-block-under-general-anesthesia-in-humans-erratum
#5
(no author information available yet)
No abstract text is available yet for this article.
May 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28431428/computational-and-in-vitro-experimental-investigation-of-intrathecal-drug-distribution-parametric-study-of-the-effect-of-injection-volume-cerebrospinal-fluid-pulsatility-and-drug-uptake
#6
Kevin M Tangen, Roxanne Leval, Ankit I Mehta, Andreas A Linninger
BACKGROUND: Intrathecal drug delivery is an attractive option to circumvent the blood-brain barrier for pain management through its increased efficacy of pain relief, reduction in adverse side effects, and cost-effectiveness. Unfortunately, there are limited guidelines for physicians to choose infusion or drug pump settings to administer therapeutic doses to specific regions of the spine or the brain. Although empiric trialing of intrathecal drugs is critical to determine the sustained side effects, currently there is no inexpensive in vitro method to guide the selection of spinal drug delivery parameters...
May 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28431419/creation-and-validation-of-an-automated-algorithm-to-determine-postoperative-ventilator-requirements-after-cardiac-surgery
#7
Eilon Gabel, Ira S Hofer, Nancy Satou, Tristan Grogan, Richard Shemin, Aman Mahajan, Maxime Cannesson
BACKGROUND: In medical practice today, clinical data registries have become a powerful tool for measuring and driving quality improvement, especially among multicenter projects. Registries face the known problem of trying to create dependable and clear metrics from electronic medical records data, which are typically scattered and often based on unreliable data sources. The Society for Thoracic Surgery (STS) is one such example, and it supports manually collected data by trained clinical staff in an effort to obtain the highest-fidelity data possible...
May 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28431403/association-of-the-vdac3-gene-polymorphism-with-sperm-count-in-han-chinese-population-with-idiopathic-male-infertility
#8
Lianjun Pan, Qingzhen Liu, Jingyun Li, Wei Wu, Xinru Wang, Dan Zhao, Jiehua Ma
Voltage-dependent anion channel (VDAC) is a multifunctional channel protein across the outer mitochondrial membrane of somatic cells and participates in many physiological and pathophysiological processes. Up to now, only a few studies, including our previous studies, showed that VDAC exists in mammalian spermatozoa and is involved in spermatogenesis and sperm functions. There is no report about VDAC genetic variants in germinal tissues or cells. To investigate the possible association between VDAC genetic variants and human sperm quality, we performed semen analysis and variant Genotyping of VDAC3 subtype (rs7004637, rs16891278 and rs6773) of 523 Han-Chinese males with idiopathic infertility respectively by computer assisted semen analysis (CASA) and single nucleotide polymorphism (SNP) Genotyping assay...
April 6, 2017: Oncotarget
https://www.readbyqxmd.com/read/28431394/effect-of-salmonella-enterica-serovar-typhimurium-vnp20009-and-vnp20009-with-restored-chemotaxis-on-4t1-mouse-mammary-carcinoma-progression
#9
Sheryl L Coutermarsh-Ott, Katherine M Broadway, Birgit E Scharf, Irving C Allen
A variety of bacterial strains have been evaluated as bio-therapeutic and immunomodulatory agents to treat cancer. One such strain, Salmonella enterica serovar Typhimurium VNP20009, which is attenuated by a purine auxotrophic mutation and modified lipid A, is characterized in previous models as a safely administered, tumor colonizing agent. However, earlier work tended to use less aggressive cancer cell lines and immunocompromised animal models. Here, we investigated the safety and efficacy of VNP20009 in a highly malignant murine model of human breast cancer...
April 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28431393/loss-of-tpm4-1-leads-to-disruption-of-cell-cell-adhesions-and-invasive-behavior-in-breast-epithelial-cells-via-increased-rac1-signaling
#10
SukYeong Jeong, SunYoung Lim, Galina Schevzov, Peter W Gunning, David M Helfman
Here we report the identification and characterization of a novel high molecular weight isoform of tropomyosin, Tpm4.1, expressed from the human TPM4 gene. Tpm4.1 expression is down-regulated in a subset of breast cancer cells compared with untransformed MCF10A breast epithelial cells and in highly metastatic breast cancer cell lines derived from poorly metastatic MDA-MD-231 cells. In addition, patients with invasive ductal breast carcinoma show decreased TPM4 expression compared with patients with ductal breast carcinoma in situ, and low TPM4 expression is associated with poor prognosis...
April 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28431380/recent-aspects-of-uranium-toxicology-in-medical-geology
#11
REVIEW
Geir Bjørklund, Olav Albert Christophersen, Salvatore Chirumbolo, Olle Selinus, Jan Aaseth
Uranium (U) is a chemo-toxic, radiotoxic and even a carcinogenic element. Due to its radioactivity, the effects of U on humans health have been extensively investigated. Prolonged U exposure may cause kidney disease and cancer. The geological distribution of U radionuclides is still a great concern for human health. Uranium in groundwater, frequently used as drinking water, and general environmental pollution with U raise concerns about the potential public health problem in several areas of Asia. The particular paleo-geological hallmark of India and other Southern Asiatic regions enhances the risk of U pollution in rural and urban communities...
April 18, 2017: Environmental Research
https://www.readbyqxmd.com/read/28431378/development-of-novel-alternative-biodiesel-fuels-for-reducing-pm-emissions-and-pm-related-genotoxicity
#12
Po-Ming Yang, Chia-Chi Wang, Ying-Chi Lin, Syu-Ruei Jhang, Li-Jung Lin, Yuan-Chung Lin
This paper intend to investigate the effects of biodiesel fuel blends comprising of waste-cooking oil and butanol-diesel (B10W10-B10W40) under steady-state conditions. Both particulate organic carbon (OC) and PM including PM2.5 and PM10 significantly decreased with the increasing percentage of biodiesel fuel blends. The fuel blend of B10W40 also demonstrated the most effective function in reducing the emissions of PM10 and PM2.5 in the volume by 59.4% and 57.7%, respectively. Moreover, the emissions of nitrogen oxides decreased with the blending of B10W10-B10W40 (13...
April 18, 2017: Environmental Research
https://www.readbyqxmd.com/read/28431377/metabolic-regulation-and-the-anti-obesity-perspectives-of-human-brown-fat
#13
REVIEW
Camilla Scheele, Søren Nielsen
Activation of brown adipose tissue (BAT) in adult humans increase glucose and fatty acid clearance as well as resting metabolic rate, whereas a prolonged elevation of BAT activity improves insulin sensitivity. However, substantial reductions in body weight following BAT activation has not yet been shown in humans. This observation raise the possibility for feedback mechanisms in adult humans in terms of a brown fat-brain crosstalk, possibly mediated by batokines, factors produced by and secreted from brown fat...
April 11, 2017: Redox Biology
https://www.readbyqxmd.com/read/28431329/stealth-recombinant-human-serum-albumin-nanoparticles-conjugating-5-fluorouracil-augmented-drug-delivery-and-cytotoxicity-in-human-colon-cancer-ht-29-cells
#14
Ankita Sharma, Amanpreet Kaur, Upendra Kumar Jain, Ramesh Chandra, Jitender Madan
BACKGROUND AND OBJECTIVE: 5-Fluorouracil (5-FU) is a first-line chemotherapeutic drug in colorectal cancer. However, intravenous administration of 5-FU at the dose of 7-12mg/kg exhibits curbs like short half-life (20min) and toxic side-effects on bone marrow cells. Therefore, in present investigation, 5-FU was conjugated to poly (ethylene glycol) anchored recombinant human serum albumin nanoparticles (5-FU-rHSA-PEG-NPs) to improve the pharmacokinetic and therapeutic profiles. METHODS AND RESULTS: The mean particle size of 5-FU-rHSA-NPs was measured to be 44...
April 12, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28431328/effects-of-quantum-dots-on-the-ros-amount-of-liver-cancer-stem-cells
#15
Kunmeng Li, Chunhui Xia, Baiqi Wang, Hetao Chen, Tong Wang, Qian He, Hailong Cao, Yu Wang
Liver cancer (LC) is a serious disease that threatens human lives. LC has a high recurrence rate and poor prognosis. LC stem cells (LCSCs) play critical roles in these processes. However, the mechanism remains unclear. Reactive oxygen species (ROS) can be used to determine cell apoptosis and proliferation. However, studies of the effects of exogenous nanomaterials on LCSC ROS changes are rarely reported. In this work, quantum dots (QDs) were prepared using a hydrothermal method, and QDs were further modified with polyethylene glycol (PEG) and bovine serum albumin (BSA) using a chemical approach...
April 12, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28431314/effect-of-metals-on-microcystin-abundance-and-environmental-fate
#16
Guofei Dai, Ningyan Peng, Jiayou Zhong, Ping Yang, Binchun Zou, Hui Chen, Qian Lou, Yuanyuan Fang, Wei Zhang
Metals can react with microcystin (MC), which is released from cyanobacterial blooms through various mechanisms; these reactions may mitigate the environmental and health risks of MCs but may also cause harm to aquatic ecosystems and humans. Several studies were conducted, including laboratory tests, ecological simulations, and a field investigation of Poyang Lake. The laboratory studies showed that Fe(3+), Cu(2+), and Pb(2+) stimulated MC photodegradation under high light intensity at the water-sediment interface, which reduced the MC accumulation in the sediment...
April 18, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28431302/quality-of-life-in-survivors-of-oropharyngeal-cancer-a%C3%A2-systematic-review-and-meta-analysis-of-1366-patients
#17
REVIEW
Sanne Høxbroe Michaelsen, Christian Grønhøj, Jacob Høxbroe Michaelsen, Jeppe Friborg, Christian von Buchwald
Human papillomavirus (HPV)-associated oropharyngeal cancer (OPC) is rapidly increasing in incidence and has a favourable prognosis compared with HPV-negative disease. Current combined therapies include significant risks of morbidity for the growing group of survivors. This systematic review and meta-analysis investigates how treatment affects quality of life (QoL) in survivors of oropharyngeal cancer. PubMed, EMBASE and the Cochrane Library were systematically searched for all studies reporting patient-assessed QoL at least 1 year after treatment for OPC...
April 18, 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28431297/nano-zirconia-evaluation-of-its-antioxidant-and-anticancer-activity
#18
Siripireddy Balaji, Badal Kumar Mandal, Shivendu Ranjan, Nandita Dasgupta, Ramalingam Chidambaram
Bioactivity of nanomaterials largely depends on its size, shape and crystalline nature. In this work, the smaller sized spherical shaped nano-zirconia (ZrO2 NPs) (of ~9 to 11nm) was fabricated and studied its biological activity especially antioxidant and cytotoxicity against human colon carcinoma (HCT-116) and human lung carcinoma (A-549) cell lines. To have its real applications in biological aspects readily available Eucalyptus globulus (E. globulus) leaf extract was used as an effective capping and reducing agent for its synthesis...
April 8, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28431287/age-and-gender-effects-of-11-c-itmm-binding-to-metabotropic-glutamate-receptor-type-1-in-healthy-human-participants
#19
Muneyuki Sakata, Jun Toyohara, Kenji Ishibashi, Kei Wagatsuma, Kenji Ishii, Ming-Rong Zhang, Kiichi Ishiwata
We examined possible age- and gender-related changes in binding of the selective antagonist N-[4-[6-(isopropylamino)pyrimidin-4-yl]-1,3-thiazol-2-yl]-4-(11)C-methoxy-N-methylbenzamide ((11)C-ITMM) to metabotropic glutamate receptor type 1 in healthy human brains. Dynamic (11)C-ITMM positron emission tomography scans (90 min) with serial arterial blood sampling were performed in 15 young and 24 older healthy adult volunteers. The total distribution volume (VT) of several brain regions was estimated with 2-tissue compartment model analysis...
March 28, 2017: Neurobiology of Aging
https://www.readbyqxmd.com/read/28431281/dengue-virus-replicates-and-accumulates-in-aedes-aegypti-salivary-glands
#20
Vincent Raquin, Louis Lambrechts
Dengue virus (DENV) is an RNA virus transmitted among humans by mosquito vectors, mainly Aedes aegypti. DENV transmission requires viral dissemination from the mosquito midgut to the salivary glands. During this process the virus undergoes several population bottlenecks, which are stochastic reductions in population size that restrict intra-host viral genetic diversity and limit the efficiency of natural selection. Despite the implications for virus transmission and evolution, DENV replication in salivary glands has not been directly demonstrated...
April 18, 2017: Virology
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