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Blood purification

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https://www.readbyqxmd.com/read/28343448/hemoadsorption-by-cytosorb-in-septic-patients-a-case-series
#1
Klaus Kogelmann, Dominik Jarczak, Morten Scheller, Matthias Drüner
BACKGROUND: Septic shock, defined as life-threatening organ dysfunction caused by a dysregulated host response to infection, is a highly lethal condition that causes substantial morbidity and mortality among critically ill patients. One of the hallmarks of sepsis is the excessive release of cytokines and other inflammatory mediators causing refractory hypotension, tissue damage, metabolic acidosis and ultimately multiple organ failure. In this context, cytokine reduction by hemoadsorption represents a new concept for blood purification, developed to attenuate the overwhelming systemic levels of pro-inflammatory and anti-inflammatory mediators released in the early phase of sepsis...
March 27, 2017: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/28335525/the-history-of-clotting-factor-concentrates-pharmacokinetics
#2
REVIEW
Massimo Morfini
Clotting factor concentrates (CFCs) underwent tremendous modifications during the last forty years. Plasma-derived concentrates made the replacement therapy feasible not only in the hospital but also at patients' home by on-demand or prophylactic regimen. Virucidal methods, implemented soon after hepatitis and AIDS outbreak, and purification by Mabs made the plasma-derived concentrates safer and purer. CFCs were considered equivalent to the other drugs and general rules and methods of pharmacokinetics (PK) were applied to their study...
March 20, 2017: Journal of Clinical Medicine
https://www.readbyqxmd.com/read/28332430/preparation-of-pva-amino-multi-walled-carbon-nanotubes-nanocomposite-microspheres-for-endotoxin-adsorption
#3
Wenhui Zong, Jian Chen, Wenyan Han, Guanghui Cheng, Jie Chen, Yue Wang, Weichao Wang, Lailiang Ou, Yaoting Yu, Jie Shen
A novel polyvinyl alcohol-amino multi-walled carbon nanotube (PVA-AMWCNT) nanocomposite microsphere was prepared successfully for the first time and used for endotoxin removal. The resulting AMWCNT modified PVA microsphere was characterized by SEM, Raman spectrum and fluorescence image, which indicated AMWCNT was dispersed into the macropores of PVA microsphere uniformly. The PVA-AMWCNT microspheres showed better adsorption capability and faster adsorption equilibrium for endotoxin in aqueous solution when compared to the PVA microsphere with polymyxin B (PMB) as ligand...
March 23, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/28330122/production-purification-and-characterization-of-a-thermotolerant-alkaline-serine-protease-from-a-novel-species-bacillus-caseinilyticus
#4
Thirumala Mothe, Vishnuvardhan Reddy Sultanpuram
Alkaline proteases are important enzymes in many industrial applications, especially as additives in laundry detergent industry. Though there are a number of Bacillus species which are reported to be producing proteases, the efficiency of a protease produced by a novel strain has to be studied in comparison to the others. Hence, in this study, an alkaline serine protease produced by a novel species Bacillus caseinilyticus was purified and characterized for its possible usage in detergent industry. Ammonium sulphate, dialysis and DEAE column chromatographic methods were used for purification of the isolated alkaline protease...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28325282/dna-aptamers-for-the-characterization-of-histological-structure-of-lung-adenocarcinoma
#5
Galina S Zamay, Tatiana I Ivanchenko, Tatiana N Zamay, Valentina L Grigorieva, Yury E Glazyrin, Olga S Kolovskaya, Irina V Garanzha, Andrey A Barinov, Alexey V Krat, Gleb G Mironov, Ana Gargaun, Dmitry V Veprintsev, Sergey S Bekuzarov, Andrey K Kirichenko, Ruslan A Zukov, Marina M Petrova, Andrey A Modestov, Maxim V Berezovski, Anna S Zamay
Nucleic acid aptamers are becoming popular as molecular probes for identification and imaging pathology and, at the same time, as a convenient platform for targeted therapy. Recent studies have shown that aptamers may be effectively used for tumor characterization and as commercially available monoclonal antibodies. Here we present three DNA aptamers binding to whole transformed lung cancer tissues, including tumor cells, connective tissues, and blood vessels. Protein targets have been revealed using affinity purification followed by mass spectrometry analyses, and they have been validated using a panel of correspondent antibodies and 3D imaging of tumor tissues...
March 17, 2017: Molecular Therapy. Nucleic Acids
https://www.readbyqxmd.com/read/28296346/protein-corona-and-nanoparticles-how-can-we-investigate-on
#6
REVIEW
Francesca Pederzoli, Giovanni Tosi, Maria Angela Vandelli, Daniela Belletti, Flavio Forni, Barbara Ruozi
Nanoparticles (NPs) represent one of the most promising tools for drug-targeting and drug-delivery. However, a deeper understanding of the complex dynamics that happen after their in vivo administration is required. Particularly, plasma proteins tend to associate to NPs, forming a new surface named the 'protein corona' (PC). This surface is the most exposed as the 'visible side' of NPs and therefore, can have a strong impact on NP biodistribution, targeting efficacy and also toxicity. The PC consists of two poorly delimited layers, known as 'hard corona' (HC) and 'soft corona' (SC), that are affected by the complexity of the environment and the formed protein-surface equilibrium during in vivo blood circulation...
March 15, 2017: Wiley Interdisciplinary Reviews. Nanomedicine and Nanobiotechnology
https://www.readbyqxmd.com/read/28295603/rapid-abo-genotyping-by-high-speed-droplet-allele-specific-pcr-using-crude-samples
#7
Chiaki Taira, Kazuyuki Matsuda, Naoya Takeichi, Satomi Furukawa, Mitsutoshi Sugano, Takeshi Uehara, Nobuo Okumura, Takayuki Honda
BACKGROUND: ABO genotyping has common tools for personal identification of forensic and transplantation field. We developed a new method based on a droplet allele-specific PCR (droplet-AS-PCR) that enabled rapid PCR amplification. We attempted rapid ABO genotyping using crude DNA isolated from dried blood and buccal cells. METHODS: We designed allele-specific primers for three SNPs (at nucleotides 261, 526, and 803) in exons 6 and 7 of the ABO gene. We pretreated dried blood and buccal cells with proteinase K, and obtained crude DNAs without DNA purification...
March 13, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28293231/isolation-of-francisella-tularensis-and-yersinia-pestis-from-blood-cultures-by-plasma-purification-and-immunomagnetic-separation-accelerates-antibiotic-susceptibility-determination
#8
Ronit Aloni-Grinstein, Ofir Schuster, Shmuel Yitzhaki, Moshe Aftalion, Sharon Maoz, Ida Steinberger-Levy, Raphael Ber
The early symptoms of tularemia and plague, which are caused by Francisella tularensis and Yersinia pestis infection, respectively, are common to other illnesses, resulting in a low index of suspicion among clinicians. Moreover, because these diseases can be treated only with antibiotics, rapid isolation of the bacteria and antibiotic susceptibility testing (AST) are preferable. Blood cultures of patients may serve as a source for bacteria isolation. However, due to the slow growth rates of F. tularensis and Y...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28288160/efficient-and-robust-differentiation-of-endothelial-cells-from-human-induced-pluripotent-stem-cells-via-lineage-control-with-vegf-and-cyclic-amp
#9
Takeshi Ikuno, Hidetoshi Masumoto, Kohei Yamamizu, Miki Yoshioka, Kenji Minakata, Tadashi Ikeda, Ryuzo Sakata, Jun K Yamashita
Blood vessels are essential components for many tissues and organs. Thus, efficient induction of endothelial cells (ECs) from human pluripotent stem cells is a key method for generating higher tissue structures entirely from stem cells. We previously established an EC differentiation system with mouse pluripotent stem cells to show that vascular endothelial growth factor (VEGF) is essential to induce ECs and that cyclic adenosine monophosphate (cAMP) synergistically enhances VEGF effects. Here we report an efficient and robust EC differentiation method from human pluripotent stem cell lines based on a 2D monolayer, serum-free culture...
2017: PloS One
https://www.readbyqxmd.com/read/28283876/purification-of-serine-protease-from-polychaeta-lumbrineris-nipponica-and-assessment-of-its-fibrinolytic-activity
#10
Seung Ju Yeon, Goo Yong Chung, Jae Sang Hong, Jin Ha Hwang, Hwa Sung Shin
Ischemic stroke and cardiovascular disease can occur from blockage of blood vessels by fibrin clots formed naturally in the body. Therapeutic drugs of anticoagulant or thrombolytic agents have been studied; however, various problems have been reported such as side effects and low efficacy. Thus, development of new candidates that are more effective and safe is necessary. The objective of this study is to evaluate fibrinolytic activity, anti-coagulation, and characterization of serine protease purified from Lumbrineris nipponica, polychaeta, for new thrombolytic agents...
March 10, 2017: In Vitro Cellular & Developmental Biology. Animal
https://www.readbyqxmd.com/read/28280397/pharmacokinetics-and-outcome-of-tazobactam-piperacillin-in-japanese-patients-undergoing-low-flow-continuous-renal-replacement-therapy-dosage-considerations
#11
Hanako Kohama, Takeshi Ide, Kazuro Ikawa, Norifumi Morikawa, Shinichi Nishi
BACKGROUND: Tazobactam/piperacillin (TAZ/PIPC), which is often combined with continuous renal replacement therapy (CRRT), induces renal excretion and is thought to have a high component removal rate for blood purification. CRRT procedures vary depending on the country, region, and institution. It is not clear whether the dose of TAZ/PIPC for use in Japan can be determined based on studies conducted in other countries. Therefore, in this study, we examined the suitability of recommended dose in Japan...
2017: Clinical Pharmacology: Advances and Applications
https://www.readbyqxmd.com/read/28264497/nattokinase-an-oral-antithrombotic-agent-for-the-prevention-of-cardiovascular-disease
#12
REVIEW
Yunqi Weng, Jian Yao, Sawyer Sparks, Kevin Yueju Wang
Natto, a fermented soybean product, has been consumed as a traditional food in Japan for thousands of years. Nattokinase (NK), a potent blood-clot dissolving protein used for the treatment of cardiovascular diseases, is produced by the bacterium Bacillus subtilis during the fermentation of soybeans to produce Natto. NK has been extensively studied in Japan, Korea, and China. Recently, the fibrinolytic (anti-clotting) capacity of NK has been recognized by Western medicine. The National Science Foundation in the United States has investigated and evaluated the safety of NK...
February 28, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28256564/capillary-flow-driven-microfluidic-device-with-wettability-gradient-and-sedimentation-effects-for-blood-plasma-separation
#13
M Sneha Maria, P E Rakesh, T S Chandra, A K Sen
We report a capillary flow-driven microfluidic device for blood-plasma separation that comprises a cylindrical well between a pair of bottom and top channels. Exposure of the well to oxygen-plasma creates wettability gradient on its inner surface with its ends hydrophilic and middle portion hydrophobic. Due to capillary action, sample blood self-infuses into bottom channel and rises up the well. Separation of plasma occurs at the hydrophobic patch due to formation of a 'self-built-in filter' and sedimentation...
March 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28252613/-the-detection-and-identification-of-alpha-pyrrolidino-valerophenone-%C3%AE-pvp-and-its-metabolites-in-the-objects-of-the-forensic-chemical-examination
#14
E V Moskaleva, N N Eroshchenko, A N Kiryushin, D A Kardonsky, A A Eganov
The combined application of the IK 200609 chemical toxicological analyzer and the diagnostic biosensor (reagent) for the determination of synthetic cations (with due regard for compliance with the instruction for analysis) made it possible to detect during 15 minutes the presence of cations in the urine samples at the concentration of 376.64 ng/ml. This result was further confirmed by HPLC-Ms/MS and GH-MS. The use of the analyzer allowed the screening of the urine samples to be performed within several minutes at the preliminary stage of the study...
2017: Sudebno-meditsinskaia Ekspertiza
https://www.readbyqxmd.com/read/28249613/a-new-prescription-model-for-regional-citrate-anticoagulation-in-therapeutic-plasma-exchanges
#15
Sébastien Kissling, Cécile Legallais, Menno Pruijm, Daniel Teta, Bruno Vogt, Michel Burnier, Eric Rondeau, Christophe Ridel
BACKGROUND: Regional citrate anticoagulation (RCA) is proposed for various extracorporeal purification techniques to overcome the risk of bleeding that might result from systemic anticoagulation. Yet, no individualized treatment protocol has been proposed for therapeutic plasma exchange (TPE) so far. The objective of this study was to assess the determinants of blood citrate concentration needed and to develop an individualized RCA protocol useful for clinical practice. METHODS: The study population included 14 patients who underwent a total of 47 TPE sessions...
March 1, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28246334/express-incorporation-of-membrane-proteins-from-various-human-cell-types-into-phospholipid-bilayer-nanodiscs
#16
Stefanie Mak, Ruoyu Sun, Michael Schmalenberg, Carsten Peters, Peter B Luppa
Analysis of membrane proteins is still inadequately represented in diagnostics despite their importance as drug targets and biomarkers. One main reason is the difficult handling caused by their insolubility in aqueous buffer solutions. The nanodisc technology was developed to circumvent this challenge and enables analysis of membrane proteins with standard research methods. However, existing nanodisc generation protocols rely on time-consuming membrane isolation and protein purification from overexpression systems...
February 28, 2017: Biochemical Journal
https://www.readbyqxmd.com/read/28241997/surveillance-of-infectious-bovine-rhinotracheitis-in-marker-vaccinated-dairy-herds-application-of-a-recombinant-ge-elisa-on-bulk-milk-samples
#17
Elvira Muratore, Luigi Bertolotti, Chiara Nogarol, Claudio Caruso, Laura Lucchese, Bryan Iotti, Dario Ariello, Angela Moresco, Loretta Masoero, Stefano Nardelli, Sergio Rosati
Infectious Bovine Rhinotracheitis (IBR) occurs worldwide, requiring significant resources for eradication programs or surveillance purposes. The status of infection is usually detected by serological methods using the virus neutralization test (VNT) or enzyme-linked immunosorbent assay (ELISA) on individual sera. The gE DIVA (Differentiating Infected from Vaccinated Animals) vaccines approach, adopted in order to reduce the virus circulation and prevent clinical signs, have tightened the range of available methods for the serological diagnosis...
March 2017: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/28241128/effects-of-blood-purification-on-serum-levels-of-inflammatory-cytokines-and-cardiac-function-in-a-rat-model-of-sepsis
#18
Cong-Meng Lin, Cun-Rong Chen, Xue-Qiong Wu, Jin-Hua Ren, Shao-Zhen Chen, Xiao-Feng Luo, Xu-Qiao Mei, Lv-Ying Shen, Meng-Xian Guo, Xu-Dong Ma, Ting Yang
OBJECTIVE: The study aimed to explore the effects of blood purification (BP) on serum levels of inflammatory cytokines and cardiac function in a rat model of sepsis. METHODS: A rat model of sepsis was established by cecal ligation and puncture. All rats were divided into the normal control, sham operation, model, sham treatment, and BP treatment groups. Cardiac functions, inflammatory cytokines, myocardial enzymes, pathological score of cardiac muscle tissue, and myocardial apoptosis of rats in each group were compared...
February 28, 2017: Blood Purification
https://www.readbyqxmd.com/read/28230785/the-application-of-a-modified-d-roms-test-for-measurement-of-oxidative-stress-and-oxidized-high-density-lipoprotein
#19
Fumiaki Ito, Tomoyuki Ito, Chinatsu Suzuki, Tomoyo Yahata, Kazuyuki Ikeda, Kenji Hamaoka
Reactive oxygen species (ROS) are involved in the initiation and progression of atherosclerosis. ROS-derived hydroperoxides, as an indicator of ROS production, have been measured by using the diacron reactive oxygen metabolites (d-ROMs) test, which requires iron-containing transferrin in the reaction mixture. In this study we developed a modified d-ROMs test, termed the Fe-ROMs test, where iron ions were exogenously added to the reaction mixture. This modification is expected to exclude the assay variation that comes from different blood iron levels in individuals...
February 21, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28225865/continuous-blood-purification-treatment-for-endotoxin-induced-acute-respiratory-distress-syndrome
#20
Y Jiang, R Lin, Y Xu, S Zhang, K Cui, M Zhu, A Li, C Chen, J Yang, W Yang
This study aimed to explore the effects of continuous blood purification (CBP) treatment in pigs affected with acute respiratory distress syndrome (ARDS). A total of 12 healthy male pigs, weighing 12±1.8 kg, were randomly and equally assigned to the control and experimental groups. The ARDS pig model was prepared by intravenous injections of endotoxin (20 µg/kg). The control group was given conventional supportive therapy, while the experimental group was given continuous veno-venous hemofiltration therapy...
February 16, 2017: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
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