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https://www.readbyqxmd.com/read/29223115/immobilization-of-hexavalent-chromium-in-contaminated-soils-using-biochar-supported-nanoscale-iron-sulfide-composite
#1
Honghong Lyu, Hang Zhao, Jingchun Tang, Yanyan Gong, Yao Huang, Qihang Wu, Bin Gao
Biochar supported carboxymethyl cellulose (CMC)-stabilized nanoscale iron sulfide (FeS) composite (CMC-FeS@biochar) was prepared and tested for immobilization of hexavalent chromium Cr(VI) in soil. Results of UV-vis and transmission electron microscopy (TEM) showed that the backbone of biochar suppressed the aggregation of FeS, resulting in smaller particle size and more sorption sites than bare FeS. The composite at a dosage of 2.5 mg per gram soil displayed an enhanced Cr(VI) immobilization efficiency (a 94...
December 1, 2017: Chemosphere
https://www.readbyqxmd.com/read/29219743/building-a-polysaccharide-hydrogel-capsule-delivery-system-for-control-release-of-ibuprofen
#2
Zhi Chen, Ting Wang, Qing Yan
Development of a delivery system which can effectively carry hydrophobic drugs and have pH response is becoming necessary. Here we demonstrate that through preparation of β-cyclodextrin polymer (β-CDP), a hydrophobic drug molecule of ibuprofen (IBU) was incorporated into our prepared β-CDP inner cavities, aiming to improve the poor water solubility of IBU. A core-shell capsule structure has been designed for achieving the drug pH targeted and sustained release. This delivery system was built with polysaccharide polymer of Sodium alginate (SA), sodium carboxymethylcellulose (CMC) and hydroxyethyl cellulose (HEC) by physical cross-linking...
December 8, 2017: Journal of Biomaterials Science. Polymer Edition
https://www.readbyqxmd.com/read/29218947/-study-on-mechanism-of-hepatotoxicity-of-ploygoni-multiflori-caulis-based-on-function-inhibition-of-bilirubin-associated-transporters-in-idiosyncratic-rat
#3
Hong-Pin Li, Hong-Yu Zhu, Xing Gao, Peng-Kai Ma, Jian-Hua Chen, Xin-Ning Bi, Qi Wang, Yu-Jie Zhang
To explore the possible mechanism of liver injury, the effects of Ploygoni Multiflori Caulis and its extractive on the function of bilirubin-associated transporters were investigated in normal (N) and idiosyncratic (LPS) rats (M). The normal and LPS rats were respectively administrated powder of Ploygoni Multiflori Caulis, its extractive and same volume of 0.5% CMC-Na solution for 7 d. BSP, a substrate of the transporters of Oatp1a1 and Oatp1b2 was selected, and its pharmacokinetic parameters of intravenous injection were determined to examined the activity these transporters...
September 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/29216549/kinetic-research-on-dechlorinating-dichlorobenzene-in-aqueous-system-by-nano-scale-nickel-iron-loaded-with-cmc-nfc-hydrogel
#4
Xiao-Fang Wan, Congbao Guo, Yu Liu, Xin-Sheng Chai, Youming Li, Guangxue Chen
In this study, we reported on the nano-scale nickel/iron particles loaded in carboxymethyl/nanofibrillated cellulose (CMC/NFC) hydrogel for the dechlorination of o-dichlorobenzene (DCB) in aqueous solution. The biodegradable hydrogel may provide an ideal supporting material for fastening the bimetallic nano-scale particles, which was examined and characterized by TEM, SEM-EDX, FT-IR and BET. The performance of the selected bimetallic particles was evaluated by conducting the dechlorination of DCB in the solution under different reaction conditions (e...
November 23, 2017: Chemosphere
https://www.readbyqxmd.com/read/29214500/enhancing-cellulase-and-hemicellulase-production-in-trichoderma-orientalis-eu7-22-via-knockout-of-the-crea
#5
Chuannan Long, Yijin Cheng, Jingjing Cui, Jian Liu, Lihui Gan, Bin Zeng, Minnan Long
The role of the transcription factor creA-mediating carbon catabolite repression in Trichoderma orientalis EU7-22 was investigated for cellulase and hemicellulase production. The binary vector pUR5750G/creA::hph was constructed to knock out creA by homologous integration, generating the ΔcreA mutant Trichoderma orientalis CF1D. For strain CF1D, the filter paper activities (FPA), endoglucanase activities (CMC), cellobiohydrolase activity(CBH), β-glucosidase activity (BG), xylanase activity (XYN), and extracellular protein concentration were 1...
December 6, 2017: Molecular Biotechnology
https://www.readbyqxmd.com/read/29213329/oxygen-radical-pretreatment-promotes-cellulose-degradation-by-cellulolytic-enzymes
#6
Kiyota Sakai, Saki Kojiya, Junya Kamijo, Yuta Tanaka, Kenta Tanaka, Masahiro Maebayashi, Jun-Seok Oh, Masafumi Ito, Masaru Hori, Motoyuki Shimizu, Masashi Kato
Background: The efficiency of cellulolytic enzymes is important in industrial biorefinery processes, including biofuel production. Chemical methods, such as alkali pretreatment, have been extensively studied and demonstrated as effective for breaking recalcitrant lignocellulose structures. However, these methods have a detrimental effect on the environment. In addition, utilization of these chemicals requires alkali- or acid-resistant equipment and a neutralization step. Results: Here, a radical generator based on non-thermal atmospheric pressure plasma technology was developed and tested to determine whether oxygen-radical pretreatment enhances cellulolytic activity...
2017: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/29210142/internal-validation-of-medicaid-analytic-extract-max-data-capture-for-comprehensive-managed-care-plan-enrollees-from-2007-to-2010
#7
Yan Li, Yanmin Zhu, Chao Chen, Xi Wang, Yoonyoung Choi, Carl Henriksen, Almut G Winterstein
PURPOSE: Because of concerns over incomplete medical encounter capture in Medicaid capitated comprehensive managed care (CMC) plans, researchers have traditionally confined analyses to fee-for-service (FFS) enrollees. We aimed to evaluate the usability of data for CMC enrollees in Medicaid Analytic eXtract (MAX) files for 29 states from 2007 to 2010. METHODS: We applied 7 measures to MAX inpatient, other therapy, and prescription drug files for each state and study year...
December 6, 2017: Pharmacoepidemiology and Drug Safety
https://www.readbyqxmd.com/read/29209206/transferrin-modified-nanoparticles-for-photodynamic-therapy-enhance-the-antitumor-efficacy-of-hypocrellin-a
#8
Xi Lin, Shu-Zhen Yan, Shan-Shan Qi, Qiao Xu, Shuang-Shuang Han, Ling-Yuan Guo, Ning Zhao, Shuang-Lin Chen, Shu-Qin Yu
Photodynamic therapy (PDT) has emerged as a potent novel therapeutic modality that induces cell death through light-induced activation of photosensitizer. But some photosensitizers have characteristics of poor water-solubility and non-specific tissue distribution. These characteristics become main obstacles of PDT. In this paper, we synthesized a targeting drug delivery system (TDDS) to improve the water-solubility of photosensitizer and enhance the ability of targeted TFR positive tumor cells. TDDS is a transferrin-modified Poly(D,L-Lactide-co-glycolide (PLGA) and carboxymethyl chitosan (CMC) nanoparticle loaded with a photosensitizer hypocrellin A (HA), named TF-HA-CMC-PLGA NPs...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29204897/construction-of-a-cellulose-metabolizing-komagataella-phaffii-pichia-pastoris-by-co-expressing-glucanases-and-%C3%AE-glucosidase
#9
Thomas Kickenweiz, Anton Glieder, Jin Chuan Wu
Cellulose is a highly available and renewable carbon source in nature. However, it cannot be directly metabolized by most microbes including Komagataella phaffii (formerly Pichia pastoris), which is a frequently employed host for heterologous protein expression and production of high-value compounds. A K. phaffii strain was engineered that constitutively co-expresses an endoglucanase and a β-glucosidase both from Aspergillus niger and an exoglucanase from Trichoderma reesei under the control of bidirectional promoters...
December 4, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/29200945/ulcer-prevention-effect-of-3-4-5-tihydroxy-n0-2-methyl-1h-indol-3yl-methylidene-benzohydrazide-in-hcl-ethanol-induced-gastric-mucosal-damage-in-rats
#10
Faezeh Tayeby, Abbas Abdul Ameer Salman, Sareh Kamran, Si Lay Khaing, Nur'ain Binti Salehen, Gokula Mohan A/L Duchiyanda Mohan
The newly synthesized, 3,4,5-Trihydroxy-N 0-[(2-methyl-1H-indol-3-yl)-methylidene] benzohydrazide (TIBH), is an indole and gallic acid derivative. The aim of this research investigation was to evaluate the acute toxicity and the ulcer prevention potential of TIBH in HCl/Ethanol-induced gastric ulcer rat model. Six groups of rats were orally received 5ml/kg of vehicle (1 % Carboxy methyl cellulose) for the normal and ulcer control groups each, Omeprazole (20mg/kg) for positive control, 50 mg/kg, 100 mg/kg and 200 mg/kg of TIBH for experimental groups, respectively...
2017: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/29200811/alkyl-xylosides-physico-chemical-properties-and-influence-on-environmental-bacteria-cells
#11
Wojciech Smułek, Ewa Kaczorek, Zuzana Hricovíniová
A group of four selected non-ionic surfactants based on carbohydrates, namely octyl d-xyloside (C8X), nonyl d-xyloside (C9X), decyl d-xyloside (C10X) and dodecyl d-xyloside (C12X), have been investigated to accomplish a better understanding of their physico-chemical properties as well as biological activities. The surface-active properties, such as critical micelle concentration (CMC), emulsion and foam stability, the impact of the compounds on cell surface hydrophobicity and cell membrane permeability together with their toxicity on the selected bacterial strains have been determined as well...
2017: Journal of Surfactants and Detergents
https://www.readbyqxmd.com/read/29200741/enzyme-inhibitors-cause-multiple-effects-on-accumulation-of-monoterpene-indole-alkaloids-in-catharanthus-roseus-cambial-meristematic-cell-cultures
#12
Zhou Pengfei, Zhu Jianhua, Yu Rongmin, Zi Jiachen
Background: Enzyme inhibitors have been used for the clarification of biosynthesis of natural products. Catharanthus roseus cambial meristematic cell (CMC) culture has been established and proved to be a better monoterpeneindole alkaloid (MIA) producer than C. roseus dedifferentiated cell (DDC) culture. However, little is known about the inter-relationship of the MIA-biosynthetic genes with respect to their transcription. Objective: To clarify effects of alteration of one gene transcription on transcript levels of another genes in MIA-biosynthetic pathway, and how the accumulation of MIAs in CMCs are influenced by the alteration of their biosynthetic gene transcript levels...
October 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/29199470/risk-factors-for-30-day-complications-after-thumb-cmc-joint-arthroplasty-an-american-college-of-surgeons-national-surgery-quality-improvement-program-study
#13
Kalpit N Shah, Steven F Defroda, Bo Wang, Arnold-Peter C Weiss
BACKGROUND: The first carpometacarpal (CMC) joint is a common site of osteoarthritis, with arthroplasty being a common procedure to provide pain relief and improve function with low complications. However, little is known about risk factors that may predispose a patient for postoperative complications. METHODS: All CMC joint arthroplasty from 2005 to 2015 in the prospectively collected American College of Surgeons National Surgical Quality Improvement Program (ACS-NSQIP) database were identified...
December 1, 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/29198530/hospitalizations-for-ambulatory-care-sensitive-conditions-among-children-with-chronic-and-complex-diseases
#14
Ryan J Coller, Michelle M Kelly, Mary L Ehlenbach, Evan Goyette, Gemma Warner, Paul J Chung
OBJECTIVE: To evaluate ambulatory-care sensitive (ACS) hospitalizations for children with noncomplex chronic diseases (NC-CD) and children with medical complexity (CMC), and identify associations with ambulatory care characteristics. Although ACS hospitalizations are potentially preventable in general populations, the specific ambulatory care predictors and influence of medical complexity on them is poorly understood. STUDY DESIGN: Retrospective cohort study of NC-CD and CMC hospitalizations at a children's hospital during 2007-2014, excluding labor/delivery and children over 21 years...
November 30, 2017: Journal of Pediatrics
https://www.readbyqxmd.com/read/29198377/central-mucoepidermoid-carcinoma-an-up-to-date-analysis-of-147-cases-and-review-of-prognostic-factors
#15
REVIEW
Lucas Lacerda de Souza, Flavia Sirotheau Correa Pontes, Helder Antonio Rebelo Pontes, Nicolau Conte Neto, Waldner Ricardo Souza de Carvalho, Douglas Magno Guimarães
OBJECTIVE: To integrate the available data published on central mucoepidermoid carcinoma (CMC) into a comprehensive analysis of its clinical aspects, histology, treatment, and prognostic factors. METHODS: An electronic search was undertaken in July 2017. Eligibility criteria for publications included having clinical, histological, treatment, and time of follow-up data to confirm the diagnosis. RESULTS: In addition, gender, histological grade, conservative treatment, and lymph node metastasis were significant independent prognostic factors...
October 31, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/29197868/the-dual-carboxymethyl-cellulase-and-gelatinase-activities-of-a-newly-isolated-protein-from-brevibacillus-agri-st15c10-confer-reciprocal-regulations-in-substrate-utilization
#16
Smarajit Maiti, Tanmoy Samanta, Sumit Sahoo, Sudipta Roy
A protein showing endoglucanase-peptidase activity was prepared from a newly isolated bacterium (ST15c10). We identified ST15c10 as Brevibacillus agri based on electron-microscopic images and its 16S-rDNA sequence (GenBank accession No. HM446043), which exhibits 98.9% sequence identity to B. agri (KZ17)/B. formosus (DSM-9885T)/B. brevis. The enzyme was purified to homogeneity and gave a single peak during high-performance liquid chromatography on a Seralose 6B-150 gel-matrix/C-18 column. MALDI-TOF mass-spectrometry and bioinformatics studies revealed significant similarity to M42-aminopeptidases/endoglucanases of the CelM family...
December 2, 2017: Journal of Molecular Microbiology and Biotechnology
https://www.readbyqxmd.com/read/29195712/arthrodesis-versus-carpometacarpal-preservation-in-key-grip-procedures-in-tetraplegic-patients-a-comparative-study-of-40-cases
#17
Bertrand Coulet, Thomas Waitzenegger, Jacques Teissier, Cyril Lazerges, Michel Chammas, Charles Fattal, Adeline Cambon-Binder
PURPOSE: Constructing a lateral key pinch (KP) is a universal aim of any functional upper limb surgery program for tetraplegia. Three stages are required: (1) activating the pinch mechanism by flexor pollicis longus tenodesis to the radius or by tendon transfer to the flexor pollicis longus, (2) simplifying the polyarticular chain, and (3) positioning the thumb column. We compared 2 techniques for accomplishing the latter stage, 1 utilizing arthrodesis of the carpometacarpal joint (CMC) and 1 that did not require arthrodesis of the CMC...
November 29, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/29192004/effectiveness-of-a-comprehensive-case-management-service-for-children-with-medical-complexity
#18
Tamara D Simon, Kathryn B Whitlock, Wren Haaland, Davene R Wright, Chuan Zhou, John Neff, Waylon Howard, Brian Cartin, Rita Mangione-Smith
OBJECTIVES: To assess whether children with medical complexity (CMC) exposed to a hospital-based comprehensive case management service (CCMS) experience improved health care quality, improved functional status, reduced hospital-based utilization, and/or reduced overall health care costs. METHODS: Eligible CMC at Seattle Children's Hospital were enrolled in a cluster randomized controlled trial between December 1, 2010, and September 29, 2014. Participating primary care providers (PCPs) were randomly assigned, and CMC either had access to an outpatient hospital-based CCMS or usual care directed by their PCP...
November 30, 2017: Pediatrics
https://www.readbyqxmd.com/read/29190701/a-non-threshold-region-specific-method-for-detecting-rare-variants-in-complex-diseases
#19
Ai-Ru Hsieh, Dao-Peng Chen, Amrita Sengupta Chattopadhyay, Ying-Ju Li, Chien-Ching Chang, Cathy S J Fann
A region-specific method, NTR (non-threshold rare) variant detection method, was developed-it does not use the threshold for defining rare variants and accounts for directions of effects. NTR also considers linkage disequilibrium within the region and accommodates common and rare variants simultaneously. NTR weighs variants according to minor allele frequency and odds ratio to combine the effects of common and rare variants on disease occurrence into a single score and provides a test statistic to assess the significance of the score...
2017: PloS One
https://www.readbyqxmd.com/read/29190586/efficiency-of-the-formulated-plant-growth-promoting-pseudomonas-fluorescens-mc46-inoculant-on-triclocarban-treatment-in-soil-and-its-effect-on-vigna-radiata-growth-and-soil-enzyme-activities
#20
Merry Krisdawati Sipahutar, Jittra Piapukiew, Alisa S Vangnai
For bioaugmentation-based treatment of triclocarban (TCC), an emerging soil pollutant that is recalcitrant to biodegradation and phytotransformation, efficient TCC-degrading bacteria with an effective soil-delivering means are required. This work developed the formulated bacterial inoculant, and successfully demonstrated its TCC removal and detoxification performance in pot soil experiment with Vigna radiata plants. The soil bacterium Pseudomonas fluorescens MC46 was isolated as TCC-degrading, plant-growth promoting bacterium...
November 27, 2017: Journal of Hazardous Materials
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