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https://www.readbyqxmd.com/read/28223234/advanced-glycation-end-products-produced-systemically-and-by-macrophages-a-common-contributor-to-inflammation-and-degenerative-diseases
#1
REVIEW
Kyunghee Byun, YongCheol Yoo, Myeongjoo Son, Jaesuk Lee, Goo-Bo Jeong, Young Mok Park, Ghasem Hosseini Salekdeh, Bonghee Lee
Advanced glycation end products (AGEs) and their receptor have been implicated in the progressions of many intractable diseases, such as diabetes and atherosclerosis, and are also critical for pathologic changes in chronic degenerative diseases, such as Alzheimer's disease, Parkinson's disease, and alcoholic brain damage. Recently activated macrophages were found to be a source of AGEs, and the most abundant form of AGEs, AGE-albumin excreted by macrophages has been implicated in these diseases and to act through common pathways...
February 13, 2017: Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28213246/spinel-type-manganese-ferrite-mnfe2o4-microspheres-a-novel-affinity-probe-for-selective-and-fast-enrichment-of-phosphopeptides
#2
Xing-Yu Long, Jia-Yuan Li, Dong Sheng, Hong-Zhen Lian
The spinel-type magnetic manganese ferrite (MnFe2O4) microspheres synthesized by simple solvothermal method were used as a novel adsorbent for selective enrichment and effective isolation of phosphopeptides. The uniform MnFe2O4 magnetic affinity microspheres (MAMSs) had a narrow particle size distribution between 250 and 260nm, and displayed superparamagnetism with a saturation magnetization value of 67.0emu/g. Comprehensively, the possible formation mechanism of MnFe2O4 microspheres with ferric and manganous sources as dual precursors was elucidated by comparison with those of Fe3O4 nanoparticles and MnOOH nanosheets respectively with either ferric or manganous source as single precursor...
May 1, 2017: Talanta
https://www.readbyqxmd.com/read/28194981/droplet-assisted-inlet-ionization-for-online-analysis-of-airborne-nanoparticles
#3
Andrew J Horan, Michael J Apsokardu, Murray V Johnston
Airborne nanoparticles play a key role in climate effects as well as impacting human health. Their small mass and complex chemical composition represent significant challenges for analysis. This work introduces a new ionization method, droplet assisted inlet ionization (DAII), where aqueous droplets are produced from airborne nanoparticles. When these droplets enter the mass spectrometer through a heated inlet, rapid vaporization leads to the formation of molecular ions. The method is demonstrated with test aerosols consisting of polypropylene glycol (PPG), angiotensin II, bovine serum albumin, and the "thermometer" compound p-methoxybenzylpyridinium chloride...
January 17, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28164134/diabetes-induced-reactive-oxygen-species-mechanism-of-their-generation-and-role-in-renal-injury
#4
REVIEW
Selim Fakhruddin, Wael Alanazi, Keith E Jackson
Diabetes induces the onset and progression of renal injury through causing hemodynamic dysregulation along with abnormal morphological and functional nephron changes. The most important event that precedes renal injury is an increase in permeability of plasma proteins such as albumin through a damaged glomerular filtration barrier resulting in excessive urinary albumin excretion (UAE). Moreover, once enhanced UAE begins, it may advance renal injury from progression of abnormal renal hemodynamics, increased glomerular basement membrane (GBM) thickness, mesangial expansion, extracellular matrix accumulation, and glomerulosclerosis to eventual end-stage renal damage...
2017: Journal of Diabetes Research
https://www.readbyqxmd.com/read/28140559/quantitative-conjugated-payload-measurement-using-enzymatic-release-of-antibody-drug-conjugate-with-cleavable-linker
#5
Brian Rago, L Nathan Tumey, Cong Wei, Frank Barletta, Tracey Clark, Steven Hansel, Xiaogang Han
As antibody-drug conjugate (ADC) design is evolving with novel payload, linker, and conjugation chemistry, the need for sensitive and precise quantitative measurement of conjugated payload to support pharmacokinetics (PK) is in high demand. Compared to ADCs containing noncleavable linkers, a strategy specific to linkers which are liable to pH, chemical reduction, or enzymatic cleavage has gained popularity in recent years. One bioanalytical approach to take advantage of this type of linker design is the development of a PK assay measuring released conjugated payload...
January 31, 2017: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/28135411/use-of-cryopoor-plasma-for-albumin-replacement-and-continuous-antimicrobial-infusion-for-treatment-of-septic-peritonitis-in-a-dog
#6
Meaghan K Ropski, Julien Guillaumin, Andrea A Monnig, Katy Townsend, Mary A McLoughlin
OBJECTIVE: To report the successful management of a dog with septic peritonitis and septic shock secondary to enterectomy dehiscence using novel techniques for identification of intestinal dehiscence and for septic shock treatment. CASE SUMMARY: A 5-year-old castrated male Bernese Mountain Dog presented for lethargy 6 days following enterotomy for foreign body obstruction. Septic peritonitis was identified due to dehiscence of the enterotomy site, and resection and anastomosis were performed using a gastrointestinal anastomosis and thoracoabdominal stapling device...
January 30, 2017: Journal of Veterinary Emergency and Critical Care
https://www.readbyqxmd.com/read/28131026/preparation-and-characterization-of-ph-responsive-polyacrylamide-molecularly-imprinted-polymer-application-to-isolation-of-recombinant-and-wild-type-human-serum-albumin-from-biological-sources
#7
May A Abd El-Aal, Medhat A Al-Ghobashy, Faten Abdel Aziz Fathalla, Yasser S El-Saharty
In this work pH-responsive neutral and cationic polyacrylamide molecularly imprinted polymers (nMIP and cMIP, respectively) were prepared for separation of recombinant and wild type human serum albumin (HSA, pI 4.7) using mixture of polymerization initiators. The effect of pH during preparation and adsorption stages at pI(HSA)±2.0 on binding capacity and selectivity; imprinting factor (IF) was thoroughly investigated. SE-HPLC and RP-HPLC were employed for thorough evaluation of the stability of HSA at the studied experimental conditions and for simultaneous determination of HSA and erythropoietin (EPO) in their mixtures, respectively...
January 23, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28130827/advanced-glycation-end-products-stimulate-gene-expression-of-fibroblast-growth-factor-23
#8
Ludmilla Bär, Kristin Wächter, Nicole Wege, Alexander Navarrete Santos, Andreas Simm, Michael Föller
SCOPE: Osteoblasts produce fibroblast growth factor 23 (FGF23), a hormone inhibiting renal phosphate reabsorption and the formation of biologically active vitamin D, calcitriol. FGF23-deficient mice age rapidly and develop age-associated diseases at least in part due to massive calcification. Elevated FGF23 serum levels are detected in patients suffering from acute and chronic renal, cardiovascular, inflammatory, and metabolic diseases. Advanced glycation end products (AGEs) are sugar-modified proteins, nucleic acid, and lipids which contribute to these disorders...
January 28, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28116800/the-albumin-bilirubin-grade-improves-hepatic-reserve-estimation-post-sorafenib-failure-implications-for-drug-development
#9
D J Pinato, C Yen, D Bettinger, R Ramaswami, T Arizumi, C Ward, M Pirisi, M E Burlone, R Thimme, M Kudo, R Sharma
BACKGROUND: Drug development in hepatocellular carcinoma (HCC) is limited by disease heterogeneity, with hepatic reserve being a major source of variation in survival outcomes. The albumin-bilirubin (ALBI) grade is a validated index of liver function in patients with HCC. AIM: To test the accuracy of the ALBI grade in predicting post-sorafenib overall survival (PSOS) in patients who permanently discontinued treatment. METHODS: From a prospectively maintained international database of 447 consecutive referrals, we derived 386 eligible patients treated with sorafenib within Barcelona Clinic Liver Cancer C stage (62%), 75% of whom were of Child class A at initiation...
January 24, 2017: Alimentary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28114138/plasma-gelsolin-and-its-association-with-mortality-and-hospitalization-in-chronic-hemodialysis-patients
#10
Cesar Flores Gama, Laura M Rosales, Georges Ouellet, Yanna Dou, Stephan Thijssen, Len Usvyat, Hanjie Zhang, Viktoriya Kuntsevich, Nathan W Levin, Peter Kotanko
BACKGROUND: Human plasma gelsolin (pGSN) is an actin-binding protein that is secreted into the extracellular fluid, with the skeletal muscle and myocardial tissues being its major source. Depletion of pGSN has been shown to be related to a variety of inflammatory and clinical conditions. METHODS: pGSN levels were prospectively determined in prevalent maintenance hemodialysis (HD) patients from 3 U.S. dialysis centers. Demographics (age, time since dialysis initiation, race, gender, body height and weight, comorbidities), inflammatory markers (C reactive protein, CRP; interleukin 6, IL-6), free triiodothyronine (fT3), and routine laboratory parameters were obtained...
January 24, 2017: Blood Purification
https://www.readbyqxmd.com/read/28110141/synchrotron-fourier-transform-infrared-mapping-a-novel-approach-for-membrane-fouling-characterization
#11
Ming Xie, Wenhai Luo, Stephen R Gray
We described a synchrotron-based infrared (IR) microscopic method to characterize fouling layer induced by organic foulants and colloidal silica in membrane distillation (MD). This technique, utilizing the ultrahigh brightness of synchrotron infrared source, enables spectra with high signal-to-noise ratio that was obtained from micrometer-sized samples. Our results showed that synchrotron IR mapping was able to resolve the foulant spatial distribution in combined fouling in MD. Synchrotron IR mapping showed the spatial distribution of binary foulant (i...
January 11, 2017: Water Research
https://www.readbyqxmd.com/read/28092149/issues-in-nutrition-nutritional-assessment-of-adults
#12
Margaret E Thompson, Mary Barth Noel
The assessment of nutritional status in adults should begin with a complete history, including intake of fruits and vegetables, sources of fat, and added sugar (eg, sugar-sweetened beverages). The history should include social factors that may impede a patient's ability to obtain food, as well as any factors that might interfere with preparing, chewing, and digesting food and absorbing nutrients. The physical examination should include measurement of height and weight and calculation of body mass index. It also may include measurements of waist circumference and waist to hip ratio, and an evaluation of strength...
January 2017: FP Essentials
https://www.readbyqxmd.com/read/28088597/phase-ii-randomized-trial-of-negative-pressure-wound-therapy-to-decrease-surgical-site-infection-in-patients-undergoing-laparotomy-for%C3%A2-gastrointestinal-pancreatic-and-peritoneal-surface-malignancies
#13
Perry Shen, Aaron U Blackham, Stacey Lewis, Clancy J Clark, Russell Howerton, Harveshp D Mogal, Rebecca M Dodson, Gregory B Russell, Edward A Levine
BACKGROUND: Surgical site infections (SSIs) remain a major source of morbidity and cost after resection of intra-abdominal malignancies. Negative-pressure wound therapy (NPWT) has been reported to significantly reduce SSIs when applied to the closed laparotomy incision. This article reports the results of a randomized clinical trial examining the effect of NPWT on SSI rates in surgical oncology patients with increased risk for infectious complications. STUDY DESIGN: From 2012 to 2016, two hundred and sixty-five patients who underwent open resection of intra-abdominal neoplasms were stratified into 3 groups: gastrointestinal (n = 57), pancreas (n = 73), or peritoneal surface (n = 135) malignancy...
January 11, 2017: Journal of the American College of Surgeons
https://www.readbyqxmd.com/read/28076823/guazuma-ulmifolia-bark-synthesized-ag-au-and-ag-au-alloy-nanoparticles-photocatalytic-potential-dna-protein-interactions-anticancer-activity-and-toxicity-against-14-species-of-microbial-pathogens
#14
Viswanathan Karthika, Ayyakannu Arumugam, Kasi Gopinath, Periyannan Kaleeswarran, Marimuthu Govindarajan, Naiyf S Alharbi, Shine Kadaikunnan, Jamal M Khaled, Giovanni Benelli
In the present study, we focused on a quick and green method to fabricate Ag, Au and Ag/Au alloy nanoparticles (NPs) using the bark extract of Guazuma ulmifolia L. Green synthesized metal NPs were characterized using different techniques, including UV-Vis spectroscopy, FT-IR, XRD, AFM and HR-TEM analyses. The production of Ag, Au and Ag/Au alloy NPs was observed monitoring color change from colorless to brown, followed by pink and dark brown, as confirmed by UV-Vis spectroscopy characteristic peaks at 436, 522 and 510nm, respectively...
January 4, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28062701/widespread-virus-replication-in-alveoli-drives-acute-respiratory-distress-syndrome-in-aerosolized-h5n1-influenza-infection-of-macaques
#15
Elizabeth R Wonderlich, Zachary D Swan, Stephanie J Bissel, Amy L Hartman, Jonathan P Carney, Katherine J O'Malley, Adebimpe O Obadan, Jefferson Santos, Reagan Walker, Timothy J Sturgeon, Lonnie J Frye, Pauline Maiello, Charles A Scanga, Jennifer D Bowling, Anthea L Bouwer, Parichat A Duangkhae, Clayton A Wiley, JoAnne L Flynn, Jieru Wang, Kelly S Cole, Daniel R Perez, Douglas S Reed, Simon M Barratt-Boyes
Human infections with highly pathogenic avian influenza A (H5N1) virus are frequently fatal but the mechanisms of disease remain ill-defined. H5N1 infection is associated with intense production of proinflammatory cytokines, but whether this cytokine storm is the main cause of fatality or is a consequence of extensive virus replication that itself drives disease remains controversial. Conventional intratracheal inoculation of a liquid suspension of H5N1 influenza virus in nonhuman primates likely results in efficient clearance of virus within the upper respiratory tract and rarely produces severe disease...
February 15, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28053889/antioxidant-antiglycation-and-insulinotrophic-properties-of-coccinia-grandis-l-in%C3%A2-vitro-possible-role-in-prevention-of-diabetic-complications
#16
Packirisamy Meenatchi, Ayyakkanuu Purushothaman, Sivaprakasam Maneemegalai
In an attempt to develop Complementary and Alternative Medicine (CAM) for the treatment of diabetes and related complications, the antidiabetic potential of the mature unripe fruits of Coccinia grandis (CGF) was evaluated. Oxidative stress and glycation plays an important role in manifesting of diabetes and vascular complications. Agents with antioxidant and antiglycation properties may retard these pathological alterations. In this study, the edible plant Coccinia grandis was assessed for in vitro estimation of antioxidant and antiglycation potential and its insulinotrophic properties in RINm5F cells...
January 2017: Journal of Traditional and Complementary Medicine
https://www.readbyqxmd.com/read/28024083/direct-evidence-for-cancer-cell-autonomous-extracellular-protein-catabolism-in-pancreatic-tumors
#17
Shawn M Davidson, Oliver Jonas, Mark A Keibler, Han Wei Hou, Alba Luengo, Jared R Mayers, Jeffrey Wyckoff, Amanda M Del Rosario, Matthew Whitman, Christopher R Chin, Kendall J Condon, Alex Lammers, Katherine A Kellersberger, Brian K Stall, Gregory Stephanopoulos, Dafna Bar-Sagi, Jongyoon Han, Joshua D Rabinowitz, Michael J Cima, Robert Langer, Matthew G Vander Heiden
Mammalian tissues rely on a variety of nutrients to support their physiological functions. It is known that altered metabolism is involved in the pathogenesis of cancer, but which nutrients support the inappropriate growth of intact malignant tumors is incompletely understood. Amino acids are essential nutrients for many cancer cells that can be obtained through the scavenging and catabolism of extracellular protein via macropinocytosis. In particular, macropinocytosis can be a nutrient source for pancreatic cancer cells, but it is not fully understood how the tumor environment influences metabolic phenotypes and whether macropinocytosis supports the maintenance of amino acid levels within pancreatic tumors...
February 2017: Nature Medicine
https://www.readbyqxmd.com/read/28013574/predictive-value-of-serum-albumin-level-for-the-prognosis-of-severe-sepsis-without-exogenous-human-albumin-administration
#18
Mei Yin, Lei Si, Weidong Qin, Chen Li, Jianning Zhang, Hongna Yang, Hui Han, Fan Zhang, Shifang Ding, Min Zhou, Dawei Wu, Xiaomei Chen, Hao Wang
BACKGROUND: The prognostic significance of serum albumin levels in patients with sepsis has previously been reported; however, these studies have not excluded the potential confounding effect of exogenous albumin administration. In this study, we investigate the predictive value of serum albumin for the prognosis of severe sepsis without the interference of exogenous albumin administration. METHODS: A prospective cohort study was conducted from April to November 2014 in the internal and surgical intensive care units of a tertiary care hospital...
January 1, 2016: Journal of Intensive Care Medicine
https://www.readbyqxmd.com/read/28010778/quantification-of-immobilized-candida-antarctica-lipase-b-calb-using-icp-aes-combined-with-bradford-method
#19
Paula Nicolás, Verónica L Lassalle, María L Ferreira
The aim of this manuscript was to study the application of a new method of protein quantification in Candida antarctica lipase B commercial solutions. Error sources associated to the traditional Bradford technique were demonstrated. Eight biocatalysts based on C. antarctica lipase B (CALB) immobilized onto magnetite nanoparticles were used. Magnetite nanoparticles were coated with chitosan (CHIT) and modified with glutaraldehyde (GLUT) and aminopropyltriethoxysilane (APTS). Later, CALB was adsorbed on the modified support...
February 2017: Enzyme and Microbial Technology
https://www.readbyqxmd.com/read/28009898/3d-qsar-predictions-for-bovine-serum-albumin-water-partition-coefficients-of-organic-anions-using-quantum-mechanically-based-descriptors
#20
Lukas Linden, Kai-Uwe Goss, Satoshi Endo
Ionic organic chemicals are a class of chemicals that is released in the environment in a large amount from anthropogenic sources. Among various chemical and biological processes, binding to serum albumin is particularly relevant for the toxicokinetic behavior of ionic chemicals. Several experimental studies showed that steric effects have a crucial influence on the sorption to bovine serum albumin (BSA). In this study, we investigated whether a 3D quantitative structure-activity relationship (3D-QSAR) model can accurately account for these steric effects by predicting the BSA-water partition coefficients (KBSA/water) of neutral and anionic organic chemicals...
December 22, 2016: Environmental Science. Processes & Impacts
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