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https://www.readbyqxmd.com/read/28819841/microscale-laminar-vortices-for-high-purity-extraction-and-release-of-circulating-tumor-cells
#1
Soojung Claire Hur, James Che, Dino Di Carlo
Circulating tumor cells (CTCs) are disseminated tumor cells that reflect the tumors of origin and can provide a liquid biopsy that would potentially enable noninvasive tumor profiling, treatment monitoring, and identification of targeted treatments. Accurate and rapid purification of CTCs holds great potential to improve cancer care but the task remains technically challenging. Microfluidic isolation of CTCs within microscale vortices enables high-throughput and size-based purification of rare CTCs from bodily fluids...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28809985/a-magnetic-micropore-chip-for-rapid-1-hour-unbiased-circulating-tumor-cell-isolation-and-in-situ-rna-analysis
#2
Jina Ko, Neha Bhagwat, Stephanie S Yee, Taylor Black, Colleen Redlinger, Janae Romeo, Mark O'Hara, Arjun Raj, Erica L Carpenter, Ben Z Stanger, David Issadore
The use of microtechnology for the highly selective isolation and sensitive detection of circulating tumor cells has shown enormous promise. One challenge for this technology is that the small feature sizes - which are the key to this technology's performance - can result in low sample throughput and susceptibility to clogging. Additionally, conventional molecular analysis of CTCs often requires cells to be taken off-chip for sample preparation and purification before analysis, leading to the loss of rare cells...
August 15, 2017: Lab on a Chip
https://www.readbyqxmd.com/read/28808944/effect-of-ha330-resin-directed-hemoadsorption-on-a-porcine-acute-respiratory-distress-syndrome-model
#3
Xuefeng Xu, Chune Jia, Sa Luo, Yanming Li, Fei Xiao, Huaping Dai, Chen Wang
BACKGROUND: Blood purification is an emerging approach to dampening the cytokine storm. This study aims to assess the efficacy of HA330 resin-directed hemoadsorption (HA) on endotoxin-induced porcine acute respiratory distress syndrome (ARDS) model. METHODS: Twenty-four Chinese domestic pigs were allocated into saline group receiving intravenous infusion of saline (N = 6) and endotoxin group receiving intravenous infusion of LPS (N = 18). When ALI model was initially diagnosed, six pigs in the LPS and saline group were killed for BALF and histopathological analysis...
August 14, 2017: Annals of Intensive Care
https://www.readbyqxmd.com/read/28808144/particulate-matter-exposure-and-stress-hormone-levels-a-randomized-double-blind-crossover-trial-of-air-purification
#4
Huichu Li, Jing Cai, Renjie Chen, Zhuohui Zhao, Zhekang Ying, Lin Wang, Jianmin Chen, Ke Hao, Patrick L Kinney, Honglei Chen, Haidong Kan
BACKGROUND: Exposure to ambient particulate matter (PM) is associated with a number of adverse health outcomes, but potential mechanisms are largely unknown. Metabolomics represents a powerful approach to study global metabolic changes in response to environmental exposures. We therefore conducted this study to investigate changes in serum metabolites in response to the reduction of PM exposure among healthy college students. METHODS: We conducted a randomized, double-blind crossover trial in 55 healthy college students in Shanghai, China...
August 15, 2017: Circulation
https://www.readbyqxmd.com/read/28805365/removal-of-cells-from-body-fluids-by-magnetic-separation-in-batch-and-continuous-mode-influence-of-bead-size-concentration-and-contact-time
#5
Nils Bohmer, Nino Demarmels, Elena Tsolaki, Lukas Gerken, Kerda Keevend, Sergio Bertazzo, Marco Lattuada, Inge K Herrmann
The magnetic separation of pathogenic compounds from body fluids is an appealing therapeutic concept. Recently, removal of a diverse array of pathogens has been demonstrated using extracorporeal dialysis-type devices. The contact time between the fluid and the magnetic beads in such devices is limited to a few minutes. This poses challenges, particularly if large compounds, such as bacteria or cells need to be removed. Here, we report on the feasibility to remove cells from body fluids in a continuous dialysis type of setting...
August 14, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28791185/use-of-hemadsorption-in-a-case-of-pediatric-toxic-shock-syndrome
#6
Andrea Berkes, Edit Szikszay, János Kappelmayer, Adrienne Kerényi, Tamás Szabó, László Ujhelyi, Krisztina Bari, György Balla, József Balla
BACKGROUND: Toxic shock syndrome is a potentially fatal toxin-mediated disease. The role of toxins in this clinical entity made us hypothesize that extracorporeal blood purification with CytoSorb® could play a beneficial role in the clinical management of toxic shock syndrome. This case report describes the successful treatment of toxic shock syndrome using a combination of renal replacement therapy and hemadsorption in a pediatric patient. CASE PRESENTATION: A 5-year-old girl with Down's syndrome presented with an inflamed area surrounding an insect bite, signs of systemic inflammation, and multiple organ failure...
2017: Case Reports in Critical Care
https://www.readbyqxmd.com/read/28789570/an-overview-of-bacillus-proteases-from-production-to-application
#7
Fabiano Jares Contesini, Ricardo Rodrigues de Melo, Hélia Harumi Sato
Proteases have a broad range of applications in industrial processes and products and are representative of most worldwide enzyme sales. The genus Bacillus is probably the most important bacterial source of proteases and is capable of producing high yields of neutral and alkaline proteolytic enzymes with remarkable properties, such as high stability towards extreme temperatures, pH, organic solvents, detergents and oxidizing compounds. Therefore, several strategies have been developed for the cost-effective production of Bacillus proteases, including optimization of the fermentation parameters...
August 8, 2017: Critical Reviews in Biotechnology
https://www.readbyqxmd.com/read/28780834/-critical-care-blood-purification-from-technology-to-science
#8
R L Yang, S W Li, X K Chen
No abstract text is available yet for this article.
August 1, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28765476/annexin-a11-is-targeted-by-igg4-and-igg1-autoantibodies-in-igg4-related-disease
#9
Lowiek M Hubers, Harmjan Vos, Alex R Schuurman, Robin Erken, Ronald P Oude Elferink, Boudewijn Burgering, Stan F J van de Graaf, Ulrich Beuers
OBJECTIVE: Immunoglobulin G4-related disease (IgG4-RD) is a multiorgan immune-mediated disease that predominantly affects the biliary tract (IgG4-associated cholangitis, IAC) and pancreas (autoimmune pancreatitis, AIP). We recently identified highly expanded IgG4+ B-cell receptor clones in blood and affected tissues of patients with IAC/AIP suggestive of specific (auto)antigenic stimuli involved in initiating and/or maintaining the inflammatory response. This study aimed to identify (auto)antigen(s) that are responsible for the clonal expansion of IgG4+ B cells in IgG4-RD...
August 1, 2017: Gut
https://www.readbyqxmd.com/read/28762680/-update-on-proteomic-use-in-hemodialysis
#10
REVIEW
Mario Bonomini, Vittorio Sirolli, Silvia Baroni, Andrea Urbani
Application of proteomics has become one of the leading experimental disciplines for increased understanding of the key role played by proteins and protein-protein interactions in all aspects of cell function. There is an increasing use of proteomic technologies for investigation into renal replacement therapy such as hemodialysis. In the last 10 years, the application of shotgun bottom-up liquid chromatography-mass spectrometry/mass spectrometry approaches has been successfully applied to research in uremic toxicity, with the discovery of novel uremic toxins and the potential to delineate a precise molecular approach to defining the biochemical nature of uremia...
August 1, 2017: Giornale Italiano di Nefrologia: Organo Ufficiale Della Società Italiana di Nefrologia
https://www.readbyqxmd.com/read/28755361/recombinant-overexpression-of-mammalian-tspo-isoforms-1-and-2
#11
Lucile Senicourt, Soria Iatmanen-Harbi, Claude Hattab, Mariano Anibal Ostuni, Marie-France Giraud, Jean-Jacques Lacapere
TSPO is a 18 kDa membrane protein that exists in mammalian as two isoforms 1 and 2. They are involved in different functions and are located in different membranes. TSPO1 is mainly located in outer mitochondrial membrane, whereas TSPO2 is encountered in plasma membrane of red blood cells. Determination of their structures is a milestone to understand their function. Their natural abundance is not sufficient to get large amounts usually required for structural studies. We described heterologous overexpression in both bacterial and cell-free system and purification on immobilized-metal affinity chromatography (IMAC) of both proteins...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28749853/the-icu-is-becoming-a-main-battlefield-for-severe-maternal-rescue-in-china-an-8-year-single-center-clinical-experience
#12
Liu Yuqi, Guoliang Tan, Shang Chengming, Sun Xuri
OBJECTIVES: To review the characteristics of and to identify the reasons for severe maternal admissions to the ICU. DESIGN: This was an analytical, observational, open, and retrospective study. SETTING: In our ICU. PATIENTS: A total of 487 severe maternal cases were reviewed during the 8-year study period of January 2009 to December 2016. INTERVENTION: None. MEASUREMENTS AND MAIN RESULTS: A total of 487 severe maternal cases (12...
July 26, 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/28748351/pig-tissue-factor-pathway-inhibitor-%C3%AE-fusion-immunoglobulin-inhibits-pig-tissue-factor-activity-in-human-plasma-moderately-more-efficiently-than-the-human-counterpart
#13
Chang-Yong Choi, Yeon-Hui Kim, Joonbeom Bae, Suk Jun Lee, Hyun Kyung Kim, Chung-Gyu Park, Taehoon Chun
OBJECTIVE: To determine the efficacy of soluble pig tissue factor pathway inhibitor fusion immunoglobulin (TFPI-Ig) in blocking pig to human xenogeneic blood coagulation. RESULTS: To generate pig TFPI-Ig or human TFPI-Ig, expression vector containing cDNA encoding pig TFPIα or human TFPIα combined with human constant Ig heavy chain region was cloned and introduced into CHO cells. After purification of pig TFPI-Ig and human TFPI-Ig, the inhibition of each recombinant protein on pig tissue factor (TF)-mediated blood coagulation was examined in human plasma...
July 26, 2017: Biotechnology Letters
https://www.readbyqxmd.com/read/28743623/novel-mannose-binding-natterin-like-protein-in-the-skin-mucus-of-atlantic-cod-gadus-morhua
#14
Binoy Rajan, Deepti M Patel, Yoichiro Kitani, Kiron Viswanath, Monica F Brinchmann
This study presents the first report of purification of natterin-like protein (Nlp) in a non-venomous fish. The peptide identities of purified cod Nlp were confirmed through LC-MSMS and matched to a cod expressed sequence tag (EST). A partial cod nlp nucleotide sequence was amplified and sequenced based on this EST. Multiple sequence alignment of cod Nlp showed considerable homology with other teleost Nlps and the presence of an N-terminal jacalin-like lectin domain coupled with a C-terminal toxin domain. nlp expression was higher in skin, head kidney, liver and spleen than in other tissues studied...
July 22, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28743343/-effects-of-multimodal-combination-dialysis-on-klotho-protein-fgf-23-and-bnp-in-patients-with-maintenance-hemodialysis
#15
Xiaofeng Deng, Qing Dai, Li Wan, Ling Tang, Yue Shu, Hengfen Xiao, Yuanyuan Bi, Hongfen Yang
OBJECTIVE: To discuss the effects of multimodal combination dialysis on Klotho protein, fibroblast growth factor-23 (FGF-23) and brain natriuretic peptide (BNP) in patients with maintenance hemodialysis (MHD). METHODS: A randomized controlled trial (RCT) was conducted. 120 patients who was diagnosed with chronic renal failure (CRF) uremia receiving MHD over 3 months admitted to Blood Purification Centre of Department of Nephrology of the Second People's Hospital of Guiyang from December 2015 to December 2016 were enrolled, who were randomly divided into hemodialysis (HD) group (HD for 8 times a month), HD + hemofiltration (HF) group (HD for 8 times a month + HF once a month), and HD + HF + hemoperfusion (HP) group (HD for 8 times a month + HF for 4 times a month + HP once a month), with 40 patients in each group...
July 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28743336/-analysis-of-factors-affecting-the-prognosis-of-icu-patients-by-multiple-logistic-regression-model-a-retrospective-cohort-study-of-1-299-patients-in-12-consecutive-years
#16
Jianfeng Liang, Zhiyong Li, Yan Zhang, Wei Zhang, Haishan Dong, Yun Zhang, Chang Xu, Maolong Gao
OBJECTIVE: To explore the prognostic factors of intensive care unit (ICU) patients. METHODS: A retrospective cohort study was conducted. The clinical data of patients admitted to ICU of Beijing Geriatric Hospital from January 2005 to December 2016 were collected. According to the prognosis, the patients were divided into death group and survival group, and the mortality trend with time and age was observed. Survival and death were treated as dependent variables, while the gender, age, reason of ICU admission, acute physiology and chronic health evaluation II (APACHE II) score, whether undergoing invasive mechanical ventilation (MV), invasive MV reason, duration of invasive MV, whether successful weaning, whether ICU nosocomial infection, hospital acquired pneumonia (HAP), central line-associated bloodstream infection (CLABSI), acute kidney injury (AKI) occurred, whether undergoing continuous blood purification (CBP), whether septic shock occurred, whether undergoing invasive hemodynamic monitoring or blood transfusion and length of ICU stay were used as the independent variables...
July 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28735872/characterization-of-a-novel-cystatin-type-2-from-rhipicephalus-microplus-midgut
#17
Thyago H S Cardoso, Stephen Lu, Boris R G Gonzalez, Ricardo J S Torquato, Aparecida S Tanaka
The Rhipicephalus (Boophilus) microplus is an exclusive bovine ectoparasite responsible for the transmission of pathogens that decrease meat, leather and milk productions. Cattle vaccination is an alternative to control tick infestations, but the discovery of potential antigens is still a challenge for researchers. Recently, our group performed a midgut transcriptome of engorged R. microplus tick, and out of 800 ESTs sequences one cystatin-coding sequence was identified and named Rmcystatin-4. In order to understand the physiological role of Rmcystatin-4, the aim of this work was the expression, purification and functional characterization of a novel type 2 cystatin from the tick R...
September 2017: Biochimie
https://www.readbyqxmd.com/read/28731485/th17-regulatory-t-cell-imbalance-in-sepsis-patients-with-multiple-organ-dysfunction-syndrome-attenuated-by-high-volume-hemofiltration
#18
Jiguang Guo, Wu Tao, Dan Tang, Jianbin Zhang
BACKGROUND: We assessed the Th17 (T-helper cell)/Treg (Regulatory T cell) imbalance in sepsis patients with multiple organ dysfunction syndrome (MODS) and the clinical benefits of continuous high-volume hemofiltration (HVHF). METHODS: 48 sepsis patients, including 22 patients with MODS (MODS group, n = 22) and 26 without (non-MODS group, n = 26), and 20 healthy volunteer controls were enrolled. The patients in MODS group were randomly divided into the continuous blood purification (CBP) group (n = 11) receiving conventional comprehensive treatment plus high-volume hemofiltration and the non-CBP group (n = 11) receiving conventional comprehensive treatment only...
July 14, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28723179/multifunctional-nanofibers-for-specific-purification-and-release-of-ctcs
#19
Zhili Wang, Na Sun, Min Liu, Yi Cao, Kewei Wang, Jine Wang, Renjun Pei
Recovering pure and viable circulating tumor cells (CTCs) from blood has been a challenging task for molecular characterization and functional analysis, which has attracted wide attention these days. Herein, we fabricate a thermoresponsive chitosan nanofiber substrate to effectively capture, purify, and release the target cancer cells, assisted by PNIPAAm brushes and DNA hybridization. The PNIPAAm brushes are designed to enable WBCs to detach from aptamer-PNIPAAm-chitosan-nanofiber (aptamer-P-CNFs) surfaces during the conformational transition...
April 28, 2017: ACS Sensors
https://www.readbyqxmd.com/read/28720331/a-novel-antihypertension-agent-sargachromenol-d-from-marine-brown-algae-sargassum-siliquastrum-exerts-dual-action-as-an-l-type-ca-2-channel-blocker-and-endothelin-a-b2-receptor-antagonist
#20
Byong-Gon Park, Woon-Seob Shin, Sangtae Oh, Gab-Man Park, Nam Ik Kim, Seokjoon Lee
We isolated the novel vasoactive marine natural products, (5E,10E)-14-hydroxy-2,6,10-trimethylpentadeca-5,10-dien-4-one (4) and sargachromenol D (5), from Sargassum siliquastrum collected from the coast of the East Sea in South Korea by using activity-guided HPLC purification. The compounds effectively dilated depolarization (50mMK(+))-induced basilar artery contraction with EC50 values of 3.52±0.42 and 1.62±0.63μM, respectively, but only sargachromenol D (5) showed a vasodilatory effect on endothelin-1 (ET-1)-induced basilar artery contraction (EC50=9...
July 6, 2017: Bioorganic & Medicinal Chemistry
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