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https://www.readbyqxmd.com/read/28651201/ex-situ-decoration-of-ordered-mesoporous-carbon-with-palladium-nanoparticles-via-polyoxometalates-and-for-sensitive-detection-of-acetaminophen-in-pharmaceutical-products
#1
Xiangyi Kong, Yeyu Wang, Qianqian Zhang, Tongrui Zhang, Qianqian Teng, Lei Wang, Huan Wang, Yufan Zhang
In this study, a facile and green method is described for decoration of ordered mesoporous carbon (OMC) with palladium nanoparticles (Pd NPs) through a polyoxometalates (POMs). Serving as both reducing and stabilizing agent, the Keggin-type POMs are used for synthesis of stable colloidal Pd NPs and then link them to the OMC at mild temperature. Current research focuses on the use of Pd-POMs-OMC as an effective sensing template for the detection of acetaminophen (AP) has been studied. Linear calibration curves in the range of 0...
June 20, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28645575/prediction-of-drug-induced-immune-mediated-hepatotoxicity-using-hepatocyte-like-cells-derived-from-human-embryonic-stem-cells
#2
Dong Eon Kim, Mi-Jin Jang, Young Ran Kim, Joo-Young Lee, Eun Byul Cho, Eunha Kim, Yeji Kim, Mi Young Kim, Won-Il Jeong, Seyun Kim, Yong-Mahn Han, Seung-Hyo Lee
Drug-induced liver injury (DILI) is a leading cause of liver disease and a key safety factor during drug development. In addition to the initiation events of drug-specific hepatotoxicity, dysregulated immune responses have been proposed as major pathological events of DILI. Thus, there is a need for a reliable cell culture model with which to assess drug-induced immune reactions to predict hepatotoxicity for drug development. To this end, stem cell-derived hepatocytes have shown great potentials. Here we report that hepatocyte-like cells derived from human embryonic stem cells (hES-HLCs) can be used to evaluate drug-induced hepatotoxic immunological events...
June 20, 2017: Toxicology
https://www.readbyqxmd.com/read/28636309/quantitative-chemical-proteomic-profiling-of-the-in-vivo-targets-of-reactive-drug-metabolites
#3
Landon R Whitby, R Scott Obach, Gabriel M Simon, Matthew M Hayward, Benjamin F Cravatt
Idiosyncratic liver toxicity represents an important problem in drug research and pharmacotherapy. Reactive drug metabolites that modify proteins are thought to be a principal factor in drug-induced liver injury. Here, we describe a quantitative chemical proteomic method to identify the targets of reactive drug metabolites in vivo. Treating mice with clickable analogues of four representative hepatotoxic drugs, we demonstrate extensive covalent binding that is confined primarily to the liver. Each drug exhibited a distinct target profile that, in certain cases, showed strong enrichment for specific metabolic pathways (e...
June 21, 2017: ACS Chemical Biology
https://www.readbyqxmd.com/read/28634320/comparison-of-2-analgesia-modalities-in-total-knee-replacement-surgery-is-there-an-effect-on-knee-function-rehabilitation
#4
Janis Zinkus, Lina Mockutė, Arūnas Gelmanas, Ramūnas Tamošiūnas, Arūnas Vertelis, Andrius Macas
BACKGROUND We compared the effects of continuous femoral nerve block (CFNB) and continuous intraarticular block (CIAB) on pain, functional recovery and adverse effects after total knee arthroplasty (TKA). MATERIAL AND METHODS We prospectively randomized 54 patients undergoing TKA into 2 groups: CFNB (Group F) and CIAB (Group I). Surgery was performed under spinal anesthesia. All patients received patient-controlled analgesia (PCA) with morphine, diclofenac, and acetaminophen for the first 72 h postoperatively...
June 20, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28633104/transcriptional-and-cellular-effects-of-paracetamol-in-the-oyster-crassostrea-gigas
#5
M J Bebianno, A C P Mello, M A S Serrano, F Flores-Nunes, J J Mattos, F L Zacchi, C E Piazza, M N Siebert, R S Piazza, C H A M Gomes, C M R Melo, A C D Bainy
Acetaminophen (paracetamol) (PAR) is one of the most popular non-steroidal anti-inflammatory drugs (NSAIDs) with analgesic and antipyretic properties consumed worldwide and often detected in the aquatic environment. Due to the fact that PAR induces oxidative stress in mammals, the aim of this study was to evaluate if similar effects were observed in oysters Crassostrea gigas, given their economic and ecological importance and worldwide distribution. Oysters were exposed for 1, 4 and 7 days to two different sublethal PAR concentrations (0, 1 and 100μgL(-1))...
June 17, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28630953/distribution-of-acetylated-histone-4-in-normal-liver-and-acetaminophen-induced-liver-damage
#6
N Nakamura, Chang C-W, X Yang, Q Shi, W F Salminen, A Suzuki
To describe cell-specific acetylation of histones and their zonal localization in normal mouse liver and characterize their changes in acetaminophen (APAP)-damaged mouse liver 24 hr after APAP exposure, we performed an immunohistochemical study using normal and APAP-injured mouse livers. Cell-specific expression of acetylated H4 was observed in normal mouse liver. The highest acetylated H4 expression levels were found in bile duct epithelial cells, followed by sinusoidal non-parenchymal cells, venous endothelial cells, and hepatocytes...
2017: SM J Biol
https://www.readbyqxmd.com/read/28630505/analytical-evaluation-of-the-accuracy-and-retention-of-compounding-skills-among-pharmd-students
#7
Mudit Mudit, Lloyd F Alfonso
Objective. To evaluate the accuracy and retention of compounding skills among students using analytical testing. Methods. Students compounded acetaminophen capsules from the same prescription at three time points (Exercise 1, 2, 3). The compounded products were analyzed (by HPLC) for acetaminophen content and the students' written reports were evaluated for accuracy of calculations and labeling. Results. During Exercise 1, 57.8% of the compounded capsule products were within the acceptable range, 92.2% during Exercise 2 and 75% during Exercise 3...
May 2017: American Journal of Pharmaceutical Education
https://www.readbyqxmd.com/read/28629738/nitrous-oxide-versus-oral-sedation-for-pain-management-of-first-trimester-surgical-abortion-a-randomized-study
#8
Rameet H Singh, Maria Montoya, Eve Espey, Lawrence Leeman
OBJECTIVE: The objective of the study was to compare nitrous oxide with oxygen (N2O/O2) to oral hydrocodone/acetaminophen and lorazepam for analgesia during first-trimester surgical abortion. STUDY DESIGN: This double-blind randomized trial assigned women undergoing first-trimester surgical abortion at<11 weeks' gestation to inhaled N2O/O2 vs. oral sedation for pain management. The N2O/O2 group received up to 70:30 ratio during the procedure and placebo pills preprocedure; the oral group received inhaled oxygen during the procedure and oral hydrocodone/acetaminophen 5 mg/325 mg and lorazepam 1 mg preprocedure...
June 16, 2017: Contraception
https://www.readbyqxmd.com/read/28627888/investigation-of-drug-induced-hepatotoxicity-and-its-remediation-pathway-with-reaction-based-fluorescent-probes
#9
Dan Cheng, Wang Xu, Lin Yuan, Xiao-Bing Zhang
Drug-induced liver injury (DILI) is considered a serious problem related to public health, due to its unpredictability and acute response. The level of peroxynitrite (ONOO-) generated in liver has long been regarded as a biomarker for the prediction and measurement of DILI. Herein we present two reaction based fluorescent probes (Naph-ONOO- and Rhod-ONOO-) for ONOO- through a novel and universally applicable mechanism: ONOO- mediated deprotection of -keto caged fluorophores. Among them, Rhod-ONOO- can selectively accumulate and react in mitochondria, one of the main sources of ONOO-, with a substantial lower nano-molar sensitivity of 43 nM...
June 19, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28627457/analysis-of-the-origins-of-content-non-uniformity-in-high-shear-wet-granulation
#10
Sarang Oka, David Smrčka, Anjali Kataria, Heather Emady, Fernando Muzzio, František Štěpánek, Rohit Ramachandran
In this study, the origins of granule content non-uniformity in the high-shear wet granulation of a model two-component pharmaceutical blend were investigated. Using acetaminophen as the active pharmaceutical ingredient (API) and microcrystalline cellulose as the excipient, the distribution of the API across the granule size classes was measured for a range of conditions that differed in the duration of the initial dry mixing stage, the overall composition of the blend and the wet massing time. The coarse granule fractions were found to be systematically sub-potent, while the fines were enriched in the API...
June 13, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28626497/hepatoprotective-effect-of-polyphenol-enriched-fraction-from-folium-microcos-on-oxidative-stress-and-apoptosis-in-acetaminophen-induced-liver-injury-in-mice
#11
Hongtan Wu, Gang Zhang, Lisen Huang, Haiyue Pang, Na Zhang, Yupei Chen, Gueyhorng Wang
Folium Microcos (FM), the leaves of Microcos paniculata L., shows various biological functions including antioxidant activity and α-glucosidase inhibitory effect. However, its therapeutic potential in acute liver injury is still unknown. This study investigated the hepatoprotective effect and underlying mechanisms of the polyphenol-enriched fraction (FMF) from Folium Microcos. FMF exhibited strong free radical scavenging activities and prevented HepG2/Hepa1-6 cells from hydrogen peroxide- (H2O2-) induced ROS production and apoptosis in vitro...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28625456/the-effect-of-ondansetron-on-analgesic-efficacy-of-acetaminophen-after-hysterectomy-a-randomized-double-blinded-placebo-controlled-trial
#12
Onur Koyuncu, Steve Leung, Jing You, Menekse Oksar, Selim Turhanoglu, Cagla Akkurt, Kenan Dolapcioglu, Hanifi Sahin, Daniel I Sessler, Alparslan Turan
OBJECTIVES: To determine that perioperative ondansetron reduces the analgesic efficacy of acetaminophen. DESIGN: Randomized, double-blinded study. PATIENTS: 120 patients ASA I-II who underwent abdominal hysterectomy. INTERVENTIONS: All the patients were given 1g acetaminophen at skin closure. Patients were divided into two groups; ondansetron HCl (8mg, 2ml IV) (Group I, N=60) and saline (2ml IV) (Group II, N=60) at the skin closure...
August 2017: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/28625425/acetaminophen-and-ondansetron-the-central-serotonergic-connection
#13
EDITORIAL
Rebecca Y Klinger, Ashraf S Habib
No abstract text is available yet for this article.
August 2017: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/28625307/postcesarean-delivery-analgesia
#14
REVIEW
Brendan Carvalho, Alexander J Butwick
Effective pain management should be a key priority in women undergoing cesarean delivery. Suboptimal perioperative pain management is associated with chronic pain, greater opioid use, delayed functional recovery, impaired maternal-fetal bonding, and increased postpartum depression. Severe acute postoperative pain is also strongly associated with persistent pain after cesarean delivery. Multimodal analgesia is the core principle for cesarean delivery pain management. The use of neuraxial morphine and opioid-sparing adjuncts such as scheduled nonsteroidal anti-inflammatory medications and acetaminophen is recommended for all women undergoing cesarean delivery with neuraxial anesthesia unless contraindicated...
March 2017: Best Practice & Research. Clinical Anaesthesiology
https://www.readbyqxmd.com/read/28624597/suppressive-effect-of-kamebakaurin-on-acetaminophen-induced-hepatotoxicity-by-inhibiting-lipid-peroxidation-and-inflammatory-response-in-mice
#15
Hiroki Yoshioka, Yutaka Aoyagi, Nobuyuki Fukuishi, Ming-Yu Gui, Yong-Ri Jin, Xu-Wen Li, Yoshiyuki Adachi, Naohito Ohno, Koichi Takeya, Yukio Hitotsuyanagi, Nobuhiko Miura, Tsunemasa Nonogaki
BACKGROUND: Kamebakaurin (KA) is an ent-kaurane diterpenoid known to have anti-inflammatory potential. In the current study, we investigated whether pretreatment with KA could ameliorate acetaminophen (APAP)-induced hepatotoxicity by inhibiting the anti-inflammatory response in mice. METHODS: Seven-week-old C57BL/6J mice were orally administered KA or olive oil emulsion for seven days. Twenty-four hours after the last KA or olive oil administration, the mice were intraperitoneally injected with 400mg/kg APAP or saline under feed deprived condition...
April 12, 2017: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/28623007/gene-networks-in-neurodegenerative-disorders
#16
REVIEW
Daniela Recabarren, Marcelo Alarcón
Three neurodegenerative diseases [Amyotrophic Lateral Sclerosis (ALS), Parkinson's disease (PD) and Alzheimer's disease (AD)] have many characteristics like pathological mechanisms and genes. In this sense some researchers postulate that these diseases share the same alterations and that one alteration in a specific protein triggers one of these diseases. Analyses of gene expression may shed more light on how to discover pathways, pathologic mechanisms associated with the disease, biomarkers and potential therapeutic targets...
June 13, 2017: Life Sciences
https://www.readbyqxmd.com/read/28621528/unsupervised-discovery-and-comparison-of-structural-families-across-multiple-samples-in-untargeted-metabolomics
#17
Justin Johan Jozias van der Hooft, Joe Wandy, Francesca Young, Sandosh Padmanabhan, Konstantinos Gerasimidis, Karl E V Burgess, Michael P Barrett, Simon Rogers
In untargeted metabolomics approaches, the inability to structurally annotate relevant features and map them to biochemical pathways is hampering the full exploitation of many metabolomics experiments. Furthermore, variable metabolic content across samples result in sparse feature matrices that are statistically hard to handle. Here, we introduce MS2LDA+ that tackles both above-mentioned problems. Previously, we presented MS2LDA, which extracts biochemically-relevant molecular substructures ('Mass2Motifs') from a collection of fragmentation spectra as sets of co-occurring molecular fragments and neutral losses, thereby recognizing building blocks of metabolomics...
June 16, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28620383/ly6c-hi-monocytes-and-their-macrophage-descendants-regulate-neutrophil-function-and-clearance-in-acetaminophen-induced-liver-injury
#18
Nadine Graubardt, Milena Vugman, Odelia Mouhadeb, Gabriele Caliari, Metsada Pasmanik-Chor, Debby Reuveni, Ehud Zigmond, Eli Brazowski, Eyal David, Lousie Chappell-Maor, Steffen Jung, Chen Varol
Monocyte-derived macrophages (MoMF) play a pivotal role in the resolution of acetaminophen-induced liver injury (AILI). Timely termination of neutrophil activity and their clearance are essential for liver regeneration following injury. Here, we show that infiltrating Ly6C(hi) monocytes, their macrophage descendants, and neutrophils spatially and temporally overlap in the centrilobular necrotic areas during the necroinflammatory and resolution phases of AILI. At the necroinflammatory phase, inducible ablation of circulating Ly6C(hi) monocytes resulted in reduced numbers and fractions of reactive oxygen species (ROS)-producing neutrophils...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28617596/review-of-organic-wastewater-compound-concentrations-and-removal-in-onsite-wastewater-treatment-systems
#19
Laurel A Schaider, Kathryn M Rodgers, Ruthann A Rudel
Onsite wastewater treatment systems, such as septic systems, serve 20% of U.S. households and are common in areas not served by wastewater treatment plants (WWTPs) globally. They can be sources of nutrients and pathogen pollution and have been linked to health effects in communities where they contaminate drinking water. However, few studies have evaluated their ability to remove organic wastewater compounds (OWCs) such as pharmaceuticals, hormones, and detergents. We synthesized results from 20 studies of 45 OWCs in conventional drainfield-based and alternative onsite wastewater treatment systems to characterize concentrations and removal...
June 15, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28617288/fate-of-selected-pharmaceutically-active-compounds-in-the-integrated-fixed-film-activated-sludge-process
#20
K J Murray, W J Parker, L M Bragg, M R Servos
The potential for integrated fixed film activated sludge (IFAS) processes to achieve enhanced transformation of pharmaceuticals relative to conventional activated sludge (CAS) processes was assessed. Previous studies have focused on direct comparisons of parallel reactors with and without fixed film carriers and little information is available on the impacts of how varying operating parameters impact the differences in observed pharmaceutical compound (PC) transformation capabilities between CAS reactors and those equipped with both an activated sludge (AS) and fixed film carriers...
June 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
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