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https://www.readbyqxmd.com/read/28731176/hypotonic-contrast-media-is-more-toxic-than-isotonic-contrast-media-on-endothelial-cells-in-vivo-and-in-vitro
#1
Lihui Ren, Ping Wang, Zuoyan Wang, Yong Liu, Shuzheng Lv
The aim of the current study was to investigate the cytotoxic effects of hypotonic (iopamidol) and isotonic (iodixanol) contract media (CMs) in vitro and in vivo. A total of 60 Wistar rats were included and were randomly divided into three groups (20 rats per group). Iodixanol (4 g iodine/kg), iopamidol (4 g iodine/kg) or equal volume of normal saline was injected via tail vein. HUVEC and H5V cell viability was determined by Cell Counting Kit‑8 agents. Western blotting was performed to detect ATP‑binding cassette subfamily G member 1 (ABCG1) expression...
July 21, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28708716/the-influence-of-contrast-agent-s-osmolarity-on-iodine-delivery-protocol-in-coronary-computed-tomography-angiography-comparison-between-iso-osmolar-iodixanol-320-and-low-osmolar-iomeprol-370
#2
Xiaohan Yang, Weiwei Huang, Wangyan Liu, Yinsu Zhu, Yi Xu, Guanyu Yang, Lijun Tang, Xiaomei Zhu
OBJECTIVES: This study aims to assess whether iodine-contained contrast agents with different osmolarity affect iodine delivery protocol during coronary computed tomography angiography (CCTA). METHODS: Patients who underwent CCTA were randomized to receive contrast media either iodixanol-320 (iso-osmolar group) or iopromide-370 (low-osmolar group). Contrast protocols were recorded. Tube voltage of 100 kV was chosen for patients with body mass index of less than or equal to 25 (n = 224) and tube voltage of 120 kV for patients with body mass index of greater than 25 (n = 165)...
July 13, 2017: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/28708059/a-tunable-refractive-index-matching-medium-for-live-imaging-cells-tissues-and-model-organisms
#3
Tobias Boothe, Lennart Hilbert, Michael Heide, Lea Berninger, Wieland B Huttner, Vasily Zaburdaev, Nadine L Vastenhouw, Eugene W Myers, David N Drechsel, Jochen C Rink
In light microscopy, refractive index mismatches between media and sample cause spherical aberrations that often limit penetration depth and resolution. Optical clearing techniques can alleviate these mismatches, but they are so far limited to fixed samples. We present Iodixanol as a non-toxic medium supplement that allows refractive index matching in live specimens and thus a substantial improvement of the live-imaging of primary cell cultures, planarians, zebrafish and human cerebral organoids.
July 14, 2017: ELife
https://www.readbyqxmd.com/read/28708022/is-intravenous-administration-of-iodixanol-associated-with-increased-risk-of-acute-kidney-injury-dialysis-or-mortality-a-propensity-score-adjusted-study
#4
Jennifer S McDonald, Robert J McDonald, Eric E Williamson, David F Kallmes
Purpose To compare the rates of acute kidney injury (AKI), emergent dialysis, and short-term mortality between patients who underwent intravenous administration of the iso-osmolar contrast material (IOCM) iodixanol 320 and patients who underwent a noncontrast computed tomography (CT) examination. Materials and Methods Study design and implementation were overseen by an institutional review board and conformed to HIPAA guidelines on patient data integrity. All patients who underwent an iodixanol-enhanced (IOCM group) or a noncontrast (noncontrast group) CT examination from January 2003 to December 2014 were identified...
July 13, 2017: Radiology
https://www.readbyqxmd.com/read/28672909/feasibility-of-dual-low-scheme-combined-with-iterative-reconstruction-technique-in-acute-cerebral-infarction-volume-ct-whole-brain-perfusion-imaging
#5
Tao Wang, Yi Gong, Yibing Shi, Rong Hua, Qingshan Zhang
The feasibility of application of low-concentration contrast agent and low tube voltage combined with iterative reconstruction in whole brain computed tomography perfusion (CTP) imaging of patients with acute cerebral infarction was investigated. Fifty-nine patients who underwent whole brain CTP examination and diagnosed with acute cerebral infarction from September 2014 to March 2016 were selected. Patients were randomly divided into groups A and B. There were 28 cases in group A [tube voltage, 100 kV; contrast agent, iohexol (350 mg I/ml), reconstructed by filtered back projection] and 31 cases in group B [tube voltage, 80 kV; contrast agent, iodixanol (270 mg I/ml), reconstructed by algebraic reconstruction technique]...
July 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28579836/update-on-the-renal-toxicity-of-iodinated-contrast-drugs-used-in-clinical-medicine
#6
REVIEW
Michele Andreucci, Teresa Faga, Raffaele Serra, Giovambattista De Sarro, Ashour Michael
An important side effect of diagnostic contrast drugs is contrast-induced acute kidney injury (CI-AKI; a sudden decrease in renal function) occurring 48-72 hours after injection of a contrast drug that cannot be attributed to other causes. Its existence has recently been challenged, because of some retrospective studies in which the incidence of AKI was not different between subjects who received a contrast drug and those who did not, even using propensity score matching to prevent selection bias. For some authors, only patients with estimated glomerular filtration rate <30 mL/min/1...
2017: Drug, Healthcare and Patient Safety
https://www.readbyqxmd.com/read/28571759/efficient-production-of-recombinant-adeno-associated-viral-vector-serotype-dj-8-carrying-the-gfp-gene
#7
Haruo Hashimoto, Tomoko Mizushima, Tsuyoshi Chijiwa, Masato Nakamura, Hiroshi Suemizu
The purpose of this study was to establish an efficient method for the preparation of an adeno-associated viral (AAV), serotype DJ/8, carrying the GFP gene (AAV-DJ/8-GFP). We compared the yields of AAV-DJ/8 vector, which were produced by three different combination methods, consisting of two plasmid DNA transfection methods (lipofectamine and calcium phosphate co-precipitation; CaPi) and two virus DNA purification methods (iodixanol and cesium chloride; CsCl). The results showed that the highest yield of AAV-DJ/8-GFP vector was accomplished with the combination method of lipofectamine transfection and iodixanol purification...
May 29, 2017: Virus Research
https://www.readbyqxmd.com/read/28531887/expression-and-characterization-of-membrane-type-4-matrix-metalloproteinase-mt4-mmp-and-its-different-forms-in-melanoma
#8
Bettina Hieronimus, Julian Pfohl, Christian Busch, Lutz Graeve
BACKGROUND/AIMS: Membrane-type matrix metalloproteinases (MT-MMPs) are expressed on the cell surface and hydrolyze extracellular matrix components and signaling molecules by which they influence cancer cell migration and metastasis. Two of the six known MT-MMPs are anchored to the plasma membrane via a GPI anchor, one of which is MT4-MMP. Only little is known about MT4-MMP expression, synthesis, regulation and degradation. METHODS: We analyzed several human cancer cell lines as well as tissue homogenates using Western blotting and quantitative PCR for the expression of MT4-MMP...
2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28515296/hepatitis-c-virus-lipoviroparticles-assemble-in-the-endoplasmic-reticulum-er-and-bud-off-from-the-er-to-the-golgi-compartment-in-copii-vesicles
#9
Gulam H Syed, Mohsin Khan, Song Yang, Aleem Siddiqui
Hepatitis C virus (HCV) exists as a lipoprotein-virus hybrid lipoviroparticle (LVP). In vitro studies have demonstrated the importance of apolipoproteins in HCV secretion and infectivity, leading to the notion that HCV coopts the secretion of very-low-density lipoprotein (VLDL) for its egress. However, the mechanisms involved in virus particle assembly and egress are still elusive. The biogenesis of VLDL particles occurs in the endoplasmic reticulum (ER), followed by subsequent lipidation in the ER and Golgi compartment...
August 1, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28490883/retrospective-analysis-of-non-laboratory-based-adverse-drug-reactions-induced-by-intravenous-radiocontrast-agents-in-a-joint-commission-international-accredited-academic-medical-center-hospital-in-china
#10
Qin-Lan Chen, Xiao-Ying Zhao, Xiao-Mi Wang, Na Lv, Ling-Ling Zhu, Hui-Min Xu, Quan Zhou
The authors retrospectively analyzed the pattern and characteristics of non-laboratory-based adverse drug reactions (ADRs) induced by intravenous radiocontrast agents in a large-scale hospital in China during 2014-2015. There were 314 ADR cases among 118,208 patients receiving enhanced CT or MRI examinations. The frequency of moderate/severe ADRs defined by Chinese Society of Radiology (ie, severe vomiting, systematic urticaria, facial swelling, dyspnea, vasovagal reaction, laryngeal edema, seizure, trembling, convulsions, unconsciousness, shock, death, and other unexpected adverse reactions) was rare (0...
2017: Therapeutics and Clinical Risk Management
https://www.readbyqxmd.com/read/28463024/delayed-genital-blisters-following-iodixanol-administration
#11
Wen Zhang, Wei Yuan, Hai-Ling Yuan, Xiao-Lai Yang, Hua Xie
Iodixanol is a non-ionic contrast medium for general vascular use. The most common adverse effects from iodixanol include skin rashes, hives, erythema, itching, and angioedema. To date, there have been no reports of delayed genital blisters of iodixanol. In this report, we describe a patient in whom iodixanol induced delayed genital blisters one day after digital subtraction angiography.
May 2, 2017: Clinical Toxicology
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
#12
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/28401790/comparison-of-iodixanol-and-iopromide-in-patients-with-renal-insufficiency-and-congestive-heart-failure-undergoing-coronary-angiography-by-hemodynamic-monitoring
#13
Geng Qian, Yong-Qiang Yang, Wei Dong, Feng Cao, Yun-Dai Chen
We investigated the impact of contrast media (CM) with different osmolality on cardiac preload in patients with chronic kidney disease (CKD) and congestive heart failure (CHF). Patients with CKD and CHF were equally randomized to receive either iso-osmolar contrast media (IOCM) iodixanol or low-osmolar contrast media iopromide. We measured cardiac preload indexes by invasive hemodynamic monitoring before and after CM injection. Major adverse cardiac events postprocedures were recorded. Increase in extravascular lung water index was only seen in the iopromide group ( P < ...
January 1, 2017: Angiology
https://www.readbyqxmd.com/read/28395244/an-isocratic-hydrophilic-interaction-liquid-chromatographic-method-for-simultaneous-determination-of-iodixanol-and-its-related-impurities-in-drug-substance
#14
Bruno D Rondon, Neila M Cassiano, Quezia B Cass
This work reports a simple isocratic hydrophilic interaction liquid chromatographic (HILIC) method for the simultaneous quantification of iodixanol and of its related impurities C, D and E in drug substance. The chromatographic separation was carried out with a Kinetex™ HILIC column, using acetonitrile and formic acid aqueous solution (1.0mmol/L, pH 3.2) (92:08, v/v) as eluent at a flow rate of 0.8mL/min. The autosampler and column temperature were maintained at 20°C and UV detection was set at 243nm. The method was validated in accordance to the ICH guideline and employed for the analysis of two different lots of iodixanol drug substance...
June 5, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28387639/effect-of-intravenous-administration-of-contrast-media-on-serum-creatinine-levels-in-neonates
#15
Maria A Bedoya, Ammie M White, J Christopher Edgar, Madhura Pradhan, Elisabeth L Raab, James S Meyer
Purpose To assess the effect of intravenous contrast media on renal function in neonates. Materials and Methods Institutional review board approval was obtained with waiver of consent. Electronic health records from January 2011 to April 2013 were reviewed retrospectively. Measures of renal function were obtained in inpatient neonates who underwent magnetic resonance (MR) imaging or computed tomography (CT) and for whom serum creatinine (Cr) levels were obtained within 72 hours before imaging and at least one time after imaging (>1 day after administration of contrast material)...
August 2017: Radiology
https://www.readbyqxmd.com/read/28370846/effects-of-supplementation-of-iodixanol-to-semen-extender-on-quality-and-fertilization-ability-of-frozen-thawed-thai-native-bull-sperm
#16
Phirawit Chuawongboon, Saksiri Sirisathien, Jatuporn Pongpeng, Denpong Sakhong, Takashi Nagai, Thevin Vongpralub
This study investigates the effects of iodixanol supplementation in varied concentrations to Tris egg yolk (TEY) extender on the quality and fertilization ability of frozen-thawed sperm of Thai native bulls. Each ejaculate was divided into four different groups, as follows: sperm were treated with TEY extender (control group) and TEY extender supplemented with three different concentrations of iodixanol (1.25%, 2.50% and 5.00%). Semen straws were frozen in liquid nitrogen vapor. After thawing, sperm motility characteristics, viability, plasma membrane integrity and acrosome integrity were determined...
March 30, 2017: Animal Science Journal, Nihon Chikusan Gakkaihō
https://www.readbyqxmd.com/read/28360862/iodixanol-as-a-contrast-agent-in-a-fibrin-hydrogel-for-endodontic-applications
#17
Gabriel Hertig, Matthias Zehnder, Anna Woloszyk, Thimios A Mitsiadis, Anja Ivica, Franz E Weber
The application of biomaterials used in regenerative endodontics should be traceable. In this study, we checked some basic effects of rendering a fibrin hydrogel radiopaque using an iodine-based contrast agent (iodixanol) approved for systemic application. Fibrin hydrogels were prepared from a fibrin sealant (Tisseel) using either an isotonic iodixanol solution (Visipaque 320, test) or Tris buffer (control) as a diluent. Gelation kinetics, radiopacity, and swelling of lyophilized hydrogels were tested using standard methods...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28345174/overall-evaluability-of-low-dose-protocol-for-computed-tomography-angiography-of-thoracic-aorta-using-80%C3%A2-kv-and-iterative-reconstruction-algorithm-using-different-concentration-contrast-media
#18
Andrea Daniele Annoni, Maria E Mancini, Daniele Andreini, Alberto Formenti, Saima Mushtaq, Enrica Nobili, Marco Guglielmo, Andrea Baggiano, Edoardo Conte, Mauro Pepi
INTRODUCTION: Multidetector Computed Tomography Angiography (MDCTA) is presently the imaging modality of choice for aortic disease. However, the effective radiation dose and the risk related to the use of contrast agents associated with MDCTA is an issue of concern. Aim of this study was to assess image quality of a low dose ECG-gated MDCTA of thoracic aorta using different concentration contrast media without tailored injection protocol. METHODS: Two-hundred patients were randomised into four different scan protocols: Group A (Iodixanol 320 and 80 Kvp tube voltage), Group B (Iodixanol 320 and 100 Kvp tube voltage), Group C (Iomeprol 400 and 80 Kvp tube voltage) and Group D (Iomeprol 400 and 100 Kvp tube voltage)...
March 27, 2017: Journal of Medical Imaging and Radiation Oncology
https://www.readbyqxmd.com/read/28335309/separation-of-bacteria-protozoa-and-carbon-nanotubes-by-density-gradient-centrifugation
#19
Monika Mortimer, Elijah J Petersen, Bruce A Buchholz, Patricia A Holden
Sustainable production and use of carbon nanotube (CNT)-enabled materials require efficient assessment of CNT environmental hazards, including the potential for CNT bioaccumulation and biomagnification in environmental receptors. Microbes, as abundant organisms responsible for nutrient cycling in soil and water, are important ecological receptors for studying the effects of CNTs. Quantification of CNT association with microbial cells requires efficient separation of CNT-associated cells from individually dispersed CNTs and CNT agglomerates...
October 12, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28302486/mitochondria-are-devoid-of-amyloid-%C3%AE-protein-a%C3%AE-producing-secretases-evidence-for-unlikely-occurrence-within-mitochondria-of-a%C3%AE-generation-from-amyloid-precursor-protein
#20
Naomi Mamada, Daisuke Tanokashira, Kazuhiro Ishii, Akira Tamaoka, Wataru Araki
Mitochondrial dysfunction is implicated in the pathological mechanism of Alzheimer's disease (AD). Amyloid β-protein (Aβ), which plays a central role in AD pathogenesis, is reported to accumulate within mitochondria. However, a question remains as to whether Aβ is generated locally from amyloid precursor protein (APP) within mitochondria. We investigated this issue by analyzing the expression patterns of APP, APP-processing secretases, and APP metabolites in mitochondria separated from human neuroblastoma SH-SY5Y cells and those expressing Swedish mutant APP...
April 29, 2017: Biochemical and Biophysical Research Communications
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