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https://www.readbyqxmd.com/read/27914267/intein-mediated-site-specific-synthesis-of-tumor-targeting-protein-delivery-system-turning-peg-dilemma-into-prodrug-like-feature
#1
Yingzhi Chen, Meng Zhang, Hongyue Jin, Yisi Tang, Huiyuan Wang, Qin Xu, Yaping Li, Feng Li, Yongzhuo Huang
Poor tumor-targeted and cytoplasmic delivery is a bottleneck for protein toxin-based cancer therapy. Ideally, a protein toxin drug should remain stealthy in circulation for prolonged half-life and reduced side toxicity, but turn activated at tumor. PEGylation is a solution to achieve the first goal, but creates a hurdle for the second because PEG rejects interaction between the drugs and tumor cells therein. Such PEG dilemma is an unsolved problem in protein delivery. Herein proposed is a concept of turning PEG dilemma into prodrug-like feature...
November 27, 2016: Biomaterials
https://www.readbyqxmd.com/read/27905676/association-between-daily-hemodialysis-access-to-renal-transplantation-and-patients-survival-in-france
#2
Adélaïde Pladys, Cécile Vigneau, Maryvonne Hourmant, Gabrielle Duneau, Cécile Couchoud, Sahar Bayat
AIM: Daily hemodialysis improves patients' quality of life and blood purification, but its effect on survival remains controversial. The aim of this study was to analyze the association between daily hemodialysis and renal transplantation and survival in France. METHODS: This was an observational cohort study based on the French REIN registry. All incident patients ≥18 y/o who started daily hemodialysis in France between 2003 and 2012 were included. Using a propensity score, 575 patients on daily hemodialysis were matched with 1696 patients receiving thrice-weekly hemodialysis...
December 1, 2016: Nephrology
https://www.readbyqxmd.com/read/27904893/assay-for-listeria-monocytogenes-cells-in-whole-blood-using-isotachophoresis-and-recombinase-polymerase-amplification
#3
Charbel Eid, Juan G Santiago
We present a new approach which enables lysis, extraction, and detection of inactivated Listeria monocytogenes cells from blood using isotachophoresis (ITP) and recombinase polymerase amplification (RPA). We use an ITP-compatible alkaline and proteinase K approach for rapid and effective lysis. We then perform ITP purification to separate bacterial DNA from whole blood contaminants using a microfluidic device that processes 25 μL sample volume. Lysis, mixing, dispensing, and on-chip ITP purification are completed in a total of less than 50 min...
December 1, 2016: Analyst
https://www.readbyqxmd.com/read/27901553/a-prediction-and-simulation-model-for-target-oriented-regional-citrate-calcium-anticoagulation-in-extracorporeal-blood-purification
#4
Martin Brandl, Karlheinz Kellner
AIMS: Regional citrate-calcium anticoagulation is becoming more and more attractive for extracorporeal treatments in the clinical routine. METHODS: A prediction and simulation tool for the safe application of RCA during extracorporeal treatments was introduced. The model predicts the course of the ionized calcium level in the patient and the current anticoagulation status in the extracorporeal circuit based on the actual settings of the dialysis machine. RESULTS: The simulation tool delivers areas in which the blood and dialysate flow can be adjusted to reach the desired target values for RCA and predicts the time course of several parameters during treatment...
November 29, 2016: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/27899317/neurotrophic-factor-mediated-neuronal-differentiation-of-human-cord-blood-mesenchymal-stem-cells-and-their-applicability-to-assess-the-developmental-neurotoxicity
#5
Sadaf Jahan, Dipak Kumar, Ashvini Kumar, Chetan Singh Rajpurohit, Shripriya Singh, Akriti Srivastava, Ankita Pandey, A B Pant
Plasticity and developmental capacity of stem cells have now been established as a promising tool to restore the degenerative disorders. The linearity differentiation of human mesenchymal stem cells (hMSCs) into adipogenic, chondrogenic, osteogenic and even in neuronal subtypes has been demonstrated. The number of xenobiotics such as dexamethasone, insulin, isobutyl 1-methyle xanthine and retinoic acid has been reported for the potential to differentiate hMSCs into neuronal subtypes. But, the applicability of indigenous neurotrophic factor-nerve growth factor (NGF) has not been explored for the purpose...
November 27, 2016: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/27887864/optimization-of-cgmp-purification-and-expansion-of-umbilical-cord-blood-derived-t-regulatory-cells-in-support-of-first-in-human-clinical-trials
#6
David H McKenna, Darin Sumstad, Diane M Kadidlo, Bjorn Batdorf, Colin J Lord, Sarah C Merkel, Christine M Koellner, Julie M Curtsinger, Carl H June, James L Riley, Bruce L Levine, Jeffrey S Miller, Claudio G Brunstein, John E Wagner, Bruce R Blazar, Keli L Hippen
BACKGROUND AIMS: Thymic-derived regulatory T cells (tTreg) are critical regulators of the immune system. Adoptive tTreg transfer is a curative therapy for murine models of autoimmunity, graft rejection, and graft-versus-host disease (GVHD). We previously completed a "first-in-human" clinical trial using in vitro expanded umbilical cord blood (UCB)-derived tTreg to prevent GVHD in patients undergoing UCB hematopoietic stem cell transplantation (HSCT). tTreg were safe and demonstrated clinical efficacy, but low yield prevented further dose escalation...
November 22, 2016: Cytotherapy
https://www.readbyqxmd.com/read/27884066/training-a-model-for-estimating-leukocyte-composition-using-whole-blood-dna-methylation-and-cell-counts-as-reference
#7
Jonathan A Heiss, Lutz P Breitling, Benjamin Lehne, Jaspal S Kooner, John C Chambers, Hermann Brenner
AIM: Whole-blood DNA methylation depends on the underlying leukocyte composition and confounding hereby is a major concern in epigenome-wide association studies. Cell counts are often missing or may not be feasible. Computational approaches estimate leukocyte composition from DNA methylation based on reference datasets of purified leukocytes. We explored the possibility to train such a model on whole-blood DNA methylation and cell counts without the need for purification. MATERIALS & METHODS: Using whole-blood DNA methylation and corresponding five-part cell counts from 2445 participants from the London Life Sciences Prospective Population Study, a model was trained on a subset of 175 subjects and evaluated on the remaining...
November 25, 2016: Epigenomics
https://www.readbyqxmd.com/read/27875037/preparation-of-chitosan-amino-multiwalled-carbon-nanotubes-nanocomposite-beads-for-bilirubin-adsorption-in-hemoperfusion
#8
Wenhui Zong, Jian Chen, Wenyan Han, Jie Chen, Yue Wang, Weichao Wang, Guanghui Cheng, Lailiang Ou, Yaoting Yu
Chitosan-carbon nanotube composite beads combines the advantages of chitosan in forming a stable biocompatible framework and carbon nanotube that provide nanometer effects (high strength and high specific surface area etc.). In this study, chitosan/amino multiwalled carbon nanotubes (CS/AMWCNT) composite beads was prepared by phase-inversion method, in which CS and AMWCNT was crosslinked by ethylene glycol diglycidyl ether (EGDE). The CS/AMWCNT nanocomposite beads produced has been characterized by BET, SEM, TGA, and Raman spectroscopy which exhibited enhanced thermal stability due to the incorporation of AMWCNT...
November 22, 2016: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/27872701/development-of-153-sm-dtpa-spion-as-a-theranostic-dual-contrast-agents-in-spect-mri
#9
Amir Gholami, Seyyed Hossein Mousavie Anijdan
OBJECTIVES: This study describes the preparation, biodistribution of (153)Sm-DTPA-SPION after intravenous injection in rats. MATERIALS AND METHODS: The chelator DTPA dianhydride was conjugated to SPION using a small modification of the well-known cyclic anhydride method. Conjugation was done at a 1: 4 (SPION:ccDTPA) molar ratio. Conjugation reaction was purified with magnetic assorting column (MACs) using high gradient magnetic field following incubation, the radio labeled conjugate was checked using RTLC method for labeling and purity checked...
October 2016: Iranian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/27871373/design-and-production-of-antibodies-for-the-detection-of-streptococcus-uberis
#10
K Mihklepp, K Kivirand, M Nikopensius, D Peedel, M Utt, T Rinken
Streptococcus uberis (S. uberis) is an important environmental pathogen causing mastitis in dairy cattle. Mastitis or mammary gland infection is the most common disease in milking cows and cause significant economic burden to farmers due to the reduction of the amount of milk and its quality. The development of rapid analytical methods for the determination of mastitis-causing pathogens in milk is of utmost importance for the early identification of the causes of mastitis and the beginning of timely treatment of cows...
January 2017: Enzyme and Microbial Technology
https://www.readbyqxmd.com/read/27863521/seroprevalence-of-bovine-theileriosis-in-northern-china
#11
Yaqiong Li, Zhijie Liu, Junlong Liu, Jifei Yang, Qian Li, Pengfei Guo, Guiquan Guan, Guangyuan Liu, Jianxun Luo, Hong Yin, Youquan Li
BACKGROUND: Bovine theileriosis is a common disease transmitted by ticks, and can cause loss of beef and dairy cattle worldwide. Here, an indirect enzyme-linked immunosorbent assay (iELISA) based on Theileria luwenshuni surface protein (TlSP) was developed and used to carry out a seroepidemiological survey of bovine theileriosis in northern China. METHODS: We used the BugBuster Ni-NTA His•Bind Purification Kit to purify recombinant TlSP (rTlSP), which was subsequently analyzed by Western Blotting to evaluate cross-reactivity with other pathogen-positive sera...
November 18, 2016: Parasites & Vectors
https://www.readbyqxmd.com/read/27862786/efficient-conjugation-of-oligosaccharides-to-polymer-particles-by-furan-maleimide-diels-alder-reaction-application-to-the-capture-of-carbohydrate-binding-proteins
#12
Antoine Petrelli, Eric Samain, Stéphanie Pradeau, Sami Halila, Sebastien Fort
Glycan-protein interactions play a crucial role in physiological and pathological events. Hence, improving the isolation of carbohydrate-binding proteins (i.e. lectins and anti-glycan antibodies) from complex media can not only lead to a better understanding of their function, but also provides solutions for public health issues, such as water contamination or the need for universal blood plasma. Herein, we report a rapid and efficient method to produce carbohydrate-based affinity adsorbents combining enzymatic synthesis and metal-free click chemistry...
November 15, 2016: Chembiochem: a European Journal of Chemical Biology
https://www.readbyqxmd.com/read/27858178/proteome-analysis-of-hemofilter-adsorbates-to-identify-novel-substances-of-sepsis-a-pilot-study
#13
Tomoaki Hashida, Taka-Aki Nakada, Mamoru Satoh, Keisuke Tomita, Rui Kawaguchi, Fumio Nomura, Shigeto Oda
Blood purification therapy using hemofilters with high adsorbing capabilities has been reported to remove excessive humoral mediators from the blood of patients with sepsis. However, there are insufficient studies of the adsorbates bound to hemofilter membranes. We hypothesized that these adsorbates in acute kidney injury (AKI) patients with sepsis were different from those in patients without sepsis and that proteome analysis of the adsorbates would identify novel substances of sepsis. This study included 20 patients who had AKI upon admission to intensive care units (ICUs) and who received continuous renal replacement therapy using polymethyl methacrylate hemofilters...
November 17, 2016: Journal of Artificial Organs: the Official Journal of the Japanese Society for Artificial Organs
https://www.readbyqxmd.com/read/27851119/1483-the-lifetime-of-blood-purification-may-be-related-to-the-sofa-score-in-septic-patients
#14
Yoshitaka Hara, Seiko Hayakawa, Takahiro Kawaji, Yasuyoshi Kurimoto, Chizuru Yamashita, Junpei Shibata, Hidefumi Komura, Osamu Nishida
No abstract text is available yet for this article.
December 2016: Critical Care Medicine
https://www.readbyqxmd.com/read/27850953/1317-application-of-continuous-blood-purification-in-hypotensive-patients-with-mods
#15
Feihu Zhou, Hongjun Kang, Liu Hui, Zhi Mao, Chao Liu
No abstract text is available yet for this article.
December 2016: Critical Care Medicine
https://www.readbyqxmd.com/read/27825733/a-comparison-of-dna-extraction-protocols-from-blood-spotted-on-fta-cards-for-the-detection-of-tick-borne-pathogens-by-reverse-line-blot-hybridization
#16
Zerihun Hailemariam, Jabbar Sabir Ahmed, Peter-Henning Clausen, Ard Menzo Nijhof
An essential step in the molecular detection of tick-borne pathogens (TBPs) in blood is the extraction of DNA. When cooled storage of blood under field conditions prior to DNA extraction in a dedicated laboratory is not possible, the storage of blood on filter paper forms a promising alternative. We evaluated six DNA extraction methods from blood spotted on FTA Classic(®) cards (FTA cards), to determine the optimal protocol for the subsequent molecular detection of TBPs by PCR and the Reverse Line Blot hybridization assay (RLB)...
November 3, 2016: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/27823551/in-vitro-thrombolytic-potential-of-actinoprotease-from-marine-streptomyces-violaceus-vitygm
#17
V Mohanasrinivasan, C Devi Subathra, S Yogesh, A Govindaraj, S Naine Jemimah
An extracellular thrombolytic protease producing marine Streptomyces sp. VITYGM was isolated and characterized on the basis of morphological, biochemical, and molecular characterization. 16srDNA sequencing and BLAST search analysis of the sequence revealed close affiliation with Streptomyces genera and identified as Streptomyces violaceus VITYGM with 99% similarity. The primary screening for protease activity was observed by casein hydrolysis method followed by radial caseinolytic assay that showed the maximum zone of clearance of 12mm respectively...
November 4, 2016: Cardiovascular & Hematological Agents in Medicinal Chemistry
https://www.readbyqxmd.com/read/27810279/synthesis-and-characterisation-of-magnetised-dacron-heparin-composite-employed-for-antithrombin-affinity-purification
#18
Aurenice Arruda Dutra das Mercês, Ricardo de Souza Silva, Karciano José Santos Silva, Jackeline da Costa Maciel, Givanildo Bezerra Oliveira, Davian Martinez Buitrago, José Albino Oliveira de Aguiar, Luiz Bezerra de Carvalho-Júnior
Human antithrombin is a blood derivative widely used in the treatment of coagulation dysfunction. Affinity chromatography using heparin (HEP) derivatives is usually used for antithrombin purification. In this study, an affinity procedure based on a magnetic Dacron-HEP composite is proposed. Dacron was firstly converted to Dacron-hydrazide and magnetised by co-precipitation with of Fe(2+)/Fe(3+) (mDAC). HEP was activated by carbodiimide and N-hydroxysuccinimide and covalently linked to mDAC (mDAC-HEP). EDX and infrared spectra analyses confirmed each synthesis step of mDAC-HEP...
October 29, 2016: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/27790201/changes-in-serological-immunology-measures-in-uk-and-kenyan-adults-post-controlled-human-malaria-infection
#19
Susanne H Hodgson, David Llewellyn, Sarah E Silk, Kathryn H Milne, Sean C Elias, Kazutoyo Miura, Gathoni Kamuyu, Elizabeth A Juma, Charles Magiri, Alfred Muia, Jing Jin, Alexandra J Spencer, Rhea J Longley, Thomas Mercier, Laurent Decosterd, Carole A Long, Faith H Osier, Stephen L Hoffman, Bernhards Ogutu, Adrian V S Hill, Kevin Marsh, Simon J Draper
Background: The timing of infection is closely determined in controlled human malaria infection (CHMI) studies, and as such they provide a unique opportunity to dissect changes in immunological responses before and after a single infection. The first Kenyan Challenge Study (KCS) (Pan African Clinical Trial Registry: PACTR20121100033272) was performed in 2013 with the aim of establishing the CHMI model in Kenya. This study used aseptic, cryopreserved, attenuated Plasmodium falciparum sporozoites administered by needle and syringe (PfSPZ Challenge) and was the first to evaluate parasite dynamics post-CHMI in individuals with varying degrees of prior exposure to malaria...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27788700/-progress-in-diagnosis-and-therapy-of-extrahepatic-manifestations-of-cholestatic-liver-diseases
#20
L G Lu
Extra-hepatic complications of cholestasis mainly include pruritus, fatigue and metabolic bone diseases, and their molecular mechanisms have not yet been fully identified so far. Though therapeutic regimens targeted at the pathogenesis alleviate the symptoms temporarily, the therapeutic effects are limited, and therefore expounding the pathogenesis will help find more appropriate therapeutic approaches. Pruritus may be caused by nerve conduction block resulting from accumulation of some substances in the accumulated bile, existing recommended methods like drug therapy with cholestyramine and blood purification can markedly alleviate cholestasis-induced pruritus...
August 20, 2016: Zhonghua Gan Zang Bing za Zhi, Zhonghua Ganzangbing Zazhi, Chinese Journal of Hepatology
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