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https://www.readbyqxmd.com/read/28631902/-comparative-estimation-of-antilithogenic-activity-of-porcine-kidney-derived-biomedical-substance-and-sodium-citrate-in-experimental-urolithiasis
#1
G V Pavlyashik, A Yu Zharikov, V I Kiselev
AIM: to compare the anti-lithogenic activity of biomedical substance derived from freeze-dried porcine kidney and sodium citrate. MATERIALS AND METHODS: The experiments were conducted on Wistar rats divided into three groups of 15 animals each: control group (disease control), comparison group (sodium citrate treatment) and experimental group (treatment with biomedical substance from porcine kidneys). Experimental urolithiasis was modeled using the ethylene glycol model...
June 2017: Urologii︠a︡
https://www.readbyqxmd.com/read/28620442/efficacy-of-nanoceria-for-periodontal-tissues-alteration-in-glutamate-induced-obese-rats-multidisciplinary-considerations-for-personalized-dentistry-and-prevention
#2
Tetyana V Beregova, Karine S Neporada, Maksym Skrypnyk, Tetyana M Falalyeyeva, Nadiya M Zholobak, Oleksandr B Shcherbakov, Mykola Ya Spivak, Rostyslav V Bubnov
BACKGROUND: Nowadays, we face the global epidemic of obesity, that is known to contribute to the development of many diseases, such as the oral cavity pathologies. Dental and oral pathologies are frequently caused by and overlapped with systemic multifactorial diseases such as obesity being its early indicators and risk factors. The aim was to study the influence of nanoceria on periodontal tissues alteration in glutamate (MSG)-induced obese rats. METHODS: We included 52 Wistar rats of both genders and divided into four groups: newborn rats in group 1 (control) received subcutaneously 8 μl/g saline...
March 2017: EPMA Journal
https://www.readbyqxmd.com/read/28612075/sers-active-metal-organic-frameworks-with-embedded-gold-nanoparticles
#3
Xiaolin Cao, Sihui Hong, Zejun Jiang, Yongxin She, Shanshan Wang, Chan Zhang, Hui Li, Fen Jin, Maojun Jin, Jing Wang
Surface-enhanced Raman scattering (SERS) has been widely used in the detection of targets and strongly depends on the interaction and the distance between the targets and nanoparticles. Herein, metal-organic frameworks (MOFs) were first easily synthesized on a large scale via a water bath method, especially Uio-66 and Uio-67. MOFs embedded with gold nanoparticles (AuNPs) for SERS enhancement were successfully fabricated via an impregnation strategy. The synthesized AuNPs/MOF-199, AuNPs/Uio-66, and AuNPs/Uio-67 composites, with LSPR properties and high adsorption capability of MOFs to preconcentrate the analytes close to the surface of the AuNPs, exhibited excellent SERS activity...
June 14, 2017: Analyst
https://www.readbyqxmd.com/read/28597700/engineering-of-a-novel-optimized-platform-for-sublingual-delivery-with-novel-characterization-tools-in-vitro-evaluation-and-in-vivo-pharmacokinetics-study-in-human
#4
Nadia M Morsi, Ghada A Abdelbary, Ahmed H Elshafeey, M Abdallah Ahmed
The aim of this work was to develop a novel and more efficient platform for sublingual drug delivery using mosapride citrate (MSP) as a model drug. The engineering of this delivery system had two stages, the first stage was tuning of MSP physicochemical properties by complexation with pure phosphatidylcholine or phosphatidylinositol enriched soybean lecithin to form MSP-phospholipid complex (MSP-PLCP). Changes in physicochemical properties were assessed and the optimum MSP-PLCP formula was then used for formulation into a flushing resistant platform using two mucoadhesive polymers; sodium alginates and sodium carboxymethylcellulose at different concentrations...
November 2017: Drug Delivery
https://www.readbyqxmd.com/read/28595126/effect-of-chelating-agents-on-reactive-green-19-decolorization-through-fe-0-activated-persulfate-oxidation-process
#5
Feng Ding, Hong Chen, Sida Zhang, Tongjun Zhao, Na Liu
The effect of chelating agents on the decolorization of Reactive Green 19 (RG19) through Fe(0) activated persulfate (PS/Fe(0)) process was investigated. Though other previous studies reported that chelating agent can enhance the degradation of organic contaminant in Fenton-like system, our finding showed that the presence of chelating agents would chelate free Fe(2+) and minimize free Fe(2+) concentration, which resulted in the retardation of RG19 decolorization. RG19 decolorization decreased to 7%, 21%, and 15% in the presence of sodium citrate, sodium EDTA, and sodium oxalate, compared with control test (without chelating agent, 99%) within 10 min...
June 5, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28580363/targeted-metabolomics-in-colorectal-cancer-a-strategic-approach-using-standardized-laboratory-tests-of-the-blood-and-urine
#6
Katarzyna J Jerzak, Marissa Laureano, Radwa Elsharawi, Peter Kavsak, Kelvin Kw Chan, Sukhbinder K Dhesy-Thind, Kevin Zbuk
BACKGROUND: Glycolytic markers have been detected in colorectal cancer (CRC) using advanced analytical methods. METHODS: Using commercially available assays, by-products of anaerobic metabolism were prospectively measured in the blood and urine of 20 patients with metastatic colorectal cancer (mCRC) and 20 patients with local disease. Twenty-four-hour urine citrate, plasma lactate, ketones, venous blood gas, anion gap, and osmolar gap were investigated. Results of patients with metastatic and local CRC were compared using two-sample t-tests or equivalent nonparametric tests...
2017: Hypoxia
https://www.readbyqxmd.com/read/28574225/three-stream-bicarbonate-based-hemodialysis-solution-delivery-system-revisited-with-an-emphasis-on-some-aspects-of-acid-base-principles
#7
REVIEW
Susie Q Lew, Orly F Kohn, Yuk-Lun Cheng, Carl M Kjellstrand, Todd S Ing
Hemodialysis patients can acquire buffer base (i.e., bicarbonate and buffer base equivalents of certain organic anions) from the acid and base concentrates of a three-stream, dual-concentrate, bicarbonate-based, dialysis solution delivery machine. The differences between dialysis fluid concentrate systems containing acetic acid versus sodium diacetate in the amount of potential buffering power were reviewed. Any organic anion such as acetate, citrate, or lactate (unless when combined with hydrogen) delivered to the body has the potential of being converted to bicarbonate...
June 2017: Artificial Organs
https://www.readbyqxmd.com/read/28570781/the-effect-of-antioxidants-on-the-long-term-stability-of-thc-and-related-cannabinoids-in-sampled-whole-blood
#8
Lambert K Sørensen, Jørgen B Hasselstrøm
The stability of cannabinoids is complex, and crucial for the assessment of impaired driving caused by cannabis. Therefore, the effect of antioxidants on the long-term stability of Δ(9) -tetrahydrocannabinol (THC), cannabinol (CBN), cannabidiol (CBD), 11-hydroxy-Δ(9) -tetrahydrocannabinol (THC-OH) and 11-nor-9-carboxy-Δ(9) -tetrahydrocannabinol (THC-COOH) in whole blood samples preserved with fluoride citrate (FC) and fluoride oxalate (FX) mixtures was investigated at different temperatures. The measured concentrations of the cannabinoids in authentic whole blood preserved solely with FC or FX mixtures decreased significantly during prolonged storage at -20°C...
June 1, 2017: Drug Testing and Analysis
https://www.readbyqxmd.com/read/28569919/elevated-plasma-tfpi-activity-causes-attenuated-tf-dependent-thrombin-generation-in-early-onset-preeclampsia
#9
Karl Egan, Hugh O'Connor, Barry Kevane, Fergal Malone, Aine Lennon, Amani Al Zadjali, Sharon Cooley, Cathy Monteith, Patricia Maguire, Paulina Szklanna, Seamus Allen, Naomi McCallion, Fionnuala Ní Áinle
Early onset preeclampsia (EOP) is a pregnancy-specific proinflammatory disorder that is characterised by competing thrombotic and bleeding risks. It was the aim of this study to characterise thrombin generation, a major determinant of thrombotic and bleeding risk, in order to better understand the haemostatic balance in patients with EOP. Patients with EOP were recruited at the Rotunda Hospital, Dublin. Twenty-six cases of EOP were recruited over a 21-month period, out of 15,299 deliveries at the Rotunda. Blood samples were collected into sodium citrate plus corn trypsin inhibitor anticoagulated vacutainers, platelet-poor plasma was prepared, and calibrated automated thrombography was used to assess thrombin generation...
June 1, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28567340/light-and-electron-microscopic-study-of-the-medial-collateral-ligament-epiligament-tissue-in-human-knees
#10
Georgi P Georgiev, Alexandar Iliev, Georgi Kotov, Plamen Kinov, Svetoslav Slavchev, Boycho Landzhov
AIM: To examine the normal morphology of the epiligament tissue of the knee medial collateral ligament (MCL) in humans. METHODS: Several samples of the mid-substance of the MCL of the knee joint from 7 fresh human cadavers (3 females and 4 males) were taken. Examination of the epiligament tissue was conducted by light microscopy and photomicrography on semi-thin sections of formalin fixed paraffin-embedded blocks that were routinely stained with haematoxylin and eosin, Mallory stain and Van Gieson's stain...
May 18, 2017: World Journal of Orthopedics
https://www.readbyqxmd.com/read/28566738/structural-insights-into-the-elevator-like-mechanism-of-the-sodium-citrate-symporter-cits
#11
Ji Won Kim, Subin Kim, Songwon Kim, Haerim Lee, Jie-Oh Lee, Mi Sun Jin
The sodium-dependent citrate transporter of Klebsiella pneumoniae (KpCitS) belongs to the 2-hydroxycarboxylate transporter (2-HCT) family and allows the cell to use citrate as sole carbon and energy source in anaerobic conditions. Here we present crystal structures of KpCitS in citrate-bound outward-facing, citrate-bound asymmetric, and citrate-free inward-facing state. The structures reveal that the KpCitS dimerization domain remains stationary throughout the transport cycle due to a hydrogen bond network as well as extensive hydrophobic interactions...
May 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28561220/preparation-and-characterization-of-gold-nanoparticles-in-the-presence-of-citrate-and-soybean-seed-extract-in-an-acidic-conditions
#12
Ebrahim Izadi, Ali Rasooli, Abolfazl Akbarzadeh, Soodabeh Davaran
Through the present study, an eco-friendly method was used to synthesize the gold nanoparticles (GNPs) by using the sodium citrate and extract of the soybean seed as reducing the agents at PH 3. X-Ray diffraction (XRD) method was used to evaluate the crystal structure of as-synthesized NPs and it's revealed that this method leads to well crystallized GNPs. In order to determine the particle size and their distribution, field emission scanning microscopy (FE-SEM) and dynamic light scattering (DLS) were used...
May 2017: Drug Research
https://www.readbyqxmd.com/read/28555397/novel-highly-porous-magnetic-hydrogel-beads-composed-of-chitosan-and-sodium-citrate-an-effective-adsorbent-for-the-removal-of-heavy-metals-from-aqueous-solutions
#13
Shengyan Pu, Hui Ma, Anatoly Zinchenko, Wei Chu
This research focuses on the removal of heavy metal ions from aqueous solutions using magnetic chitosan hydrogel beads as a potential sorbent. Highly porous magnetic chitosan hydrogel (PMCH) beads were prepared by a combination of in situ co-precipitation and sodium citrate cross-linking. Fourier transform infrared spectroscopy indicated that the high sorption efficiency of metal cations is attributable to the hydroxyl, amino, and carboxyl groups in PMCH beads. Thermogravimetric analysis demonstrated that introducing Fe3O4 nanoparticles increases the thermal stability of the adsorbent...
May 29, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28551574/toxicity-of-silver-nanoparticles-towards-tumoral-human-cell-lines-u-937-and-hl-60
#14
Anna Barbasz, Magdalena Oćwieja, Maciej Roman
The toxicity of three types of silver nanoparticles towards histiocytic lymphoma (U-937) and human promyelocytic cells (HL-60) was studied. The nanoparticles were synthesized in a chemical reduction method using sodium borohydride. Trisodium citrate and cysteamine hydrochloride were used to generate a negative and positive nanoparticle surface charge. The evaluation of cell viability, membrane integrity, antioxidant activity and the induction of inflammation were used to evaluate the difference in cellular response to the nanoparticle treatment...
May 11, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28542804/assessment-of-an-engineered-endothelium-via-single-photon-emission-computed-tomography
#15
Bin Jiang, Yidi Wu, Chad R Haney, Chongwen Duan, Guillermo A Ameer
The clinical translation of cell-based therapeutics often requires highly sensitive, non-invasive imaging tools to assess cell function and distribution in vivo. The objective of this research was to determine whether human Sodium-Iodide Symporter (hNIS) ectopic expression in endothelial cells (ECs) in combination with single-photon emission computed tomography (SPECT) is a feasible approach to non-invasively monitor the presence and viability of an engineered endothelium on expanded polytetrafluoroethylene (ePTFE)...
May 22, 2017: Biotechnology and Bioengineering
https://www.readbyqxmd.com/read/28535438/determination-of-edoxaban-equivalent-concentrations-in-human-plasma-by-an-automated-anti-factor-xa-chromogenic-assay
#16
Ling He, Jarema Kochan, Min Lin, Alexander Vandell, Karen Brown, Francois Depasse
INTRODUCTION: This phase I, open-label, multiple-dose, two-treatment study assessed the relationship between edoxaban equivalent concentration derived from an anti-FXa assay with the summed concentration of edoxaban and its active metabolite, M-4, as assessed by liquid chromatography coupled with tandem mass spectrometry (LC/MS/MS). This study also assessed the relationship between edoxaban plasma concentrations assessed by LC/MS/MS in sodium citrate and lithium heparin tubes. MATERIALS AND METHODS: Healthy volunteers were randomized to receive once-daily edoxaban 60mg or 90mg for 5days (15 participants per treatment group)...
May 7, 2017: Thrombosis Research
https://www.readbyqxmd.com/read/28532176/synthesis-of-n-alkylated-chitosan-and-its-interactions-with-blood
#17
Yuchen Huang, Yi Zhang, Longbao Feng, Liumin He, Rui Guo, Wei Xue
When hydrophobically modified chitosan (HM-CHI) comes into contact with red blood cells (RBCs), it can cause agglomeration. This property leads HM-CHI to be a potential agent to form a rapid haemostatic plug to stop bleeding at wound sites. In this study, we investigated the properties of the HM-CHI biopolymer to act as an agent that rapidly clots blood. We have examined the synthesis and structural characteristics of HM-CHI - blood substances using X-ray diffraction, infrared spectroscopy and elemental analysis...
May 22, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/28524265/a-highly-sensitive-resonance-rayleigh-scattering-and-colorimetric-assay-for-the-recognition-of-propranolol-in-%C3%AE-adrenergic-blocker
#18
Xuanping Tan, Jidong Yang, Qiong Yang, Qin Li
In this work, a highly sensitive, citrate anion-capped gold nanoparticles (AuNPs)-based assay for the determination of propranolol in real samples with resonance Rayleigh scattering (RRS) and colorimetry was developed. When AuNPs were prepared by the sodium citrate reduction method, citrate anions self-assembled on the surface of AuNPs to form supramolecular complex anions. In BR 4.6 buffer solution, propranolol was positively charged and could bind with AuNPs to form larger aggregates through electrostatic force and hydrophobic effects...
May 19, 2017: Luminescence: the Journal of Biological and Chemical Luminescence
https://www.readbyqxmd.com/read/28523645/enhancement-of-total-lipid-yield-by-nitrogen-carbon-and-iron-supplementation-in-isolated-microalgae
#19
Ramachandran Sivaramakrishnan, Aran Incharoensakdi
The biochemical contents and biodiesel production ability of three microalgal strains grown under different sodium nitrate, sodium carbonate, and ferric ammonium citrate (iron) levels were investigated. The highest biomass and lipid contents were found in Scenedesmus sp., Chlorella sp., and Chlamydomonas sp. when grown in normal BG-11 containing sodium carbonate concentration at 0.03 g · L(-1) , and in normal BG-11 containing iron concentration at 0.009 or 0.012 g · L(-1) . Increasing the sodium nitrate level increased the biomass content, but decreased the lipid content in all three microalgae...
May 18, 2017: Journal of Phycology
https://www.readbyqxmd.com/read/28509876/optimization-of-eps-production-and-characterization-by-a-halophilic-bacterium-kocuria-rosea-zjuqh-from-chaka-salt-lake-with-response-surface-methodology
#20
Di Gu, Yingchun Jiao, Jianan Wu, Zhengjie Liu, Qihe Chen
With the rising awareness of microbial exopolysaccharides (EPSs) application in various fields, halophilic microorganisms which produce EPSs have received broad attention. A newly identified Kocuria rosea ZJUQH CCTCC M2016754 was determined to be a moderate halobacterium on account of its successful adaption to the environment containing 10% NaCl. The optimal combination of fermentation medium compositions on EPS production was studied. In this work, a fractional factorial design was adopted to investigate the significant factors that affected EPS production...
May 16, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
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