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donors capture

Y K Law, A A Hassanali
In this work, we examine the importance of nuclear quantum effects on capturing the line broadening and vibronic structure of optical spectra. We determine the absorption spectra of three aromatic molecules indole, pyridine, and benzene using time dependent density functional theory with several molecular dynamics sampling protocols: force-field based empirical potentials, ab initio simulations, and finally path-integrals for the inclusion of nuclear quantum effects. We show that the absorption spectrum for all these chromophores are similarly broadened in the presence of nuclear quantum effects regardless of the presence of hydrogen bond donor or acceptor groups...
March 14, 2018: Journal of Chemical Physics
Michael E Paulaitis, Kitty Agarwal, Serge Patrick Nana-Sinkam
A model is proposed for characterizing exosome size distributions based on dynamic scaling of domain growth on the limiting membrane of multivesicular bodies in the established exosome biogenesis pathway. The scaling exponent in this model captures the asymmetry of exosome size distributions, which are notably right-skewed to larger vesicles independent of the minimum detectable vesicle size. Analyses of exosome size distributions obtained by cryo-TEM imaging and nanoparticle tracking (NTA) show, respectively, that the scaling exponent is sensitive to the state of the cell source for exosomes in cell culture supernatants, and can distinguish exosome size distributions in serum samples taken from cancer patients relative to those from healthy donors...
March 15, 2018: Langmuir: the ACS Journal of Surfaces and Colloids
Tomohiro Morio, Yuriko Fujita, Satoshi Takahashi
Various antiviral agents have been developed, which are sometimes associated with toxicity, development of virus-resistant strain, and high cost. Virus-specific T-cell (VST) therapy provides an alternative curative therapy that can be effective for a prolonged time without eliciting drug resistance. VSTs can be directly separated using several types of capture devices and can be obtained by stimulating peripheral blood mononuclear cells with viral antigens (virus, protein, or peptide) loaded on antigen-presenting cells (APC)...
2018: [Rinshō Ketsueki] the Japanese Journal of Clinical Hematology
David Barry Hipgrave, Lukman Hendro Laksmono, Gita Maya Koemarasakti, Robin Nandy, Budhi Setiawan, Lukas Hermawan, Deswanto Marbun
District team problem solving (DTPS) was developed by WHO in the 1980s to explicitly engage local stakeholders in decentralized planning and, in later iterations, budgeting of health services. It became WHO's global flagship approach to district-level health priority-setting and planning. DTPS entails multisectoral stakeholders (the team) using local data to prioritize and fund services, and should enhance capacity in management of decentralized healthcare. From the late 1990s, DTPS evolved through several phases in Indonesia...
March 5, 2018: Health Policy and Planning
Yuhui Lin
Accelerated failure time (AFT) model is commonly applied in engineering studies to address the failure rate of a machine. In humans, survival profile of transplant patients is among the rare scenarios whereby AFT is applicable. To date, it is uncertain whether reliable risk estimates and age-specific mortality trajectories have been published using conventional statistics approach. By investigating mortality trajectory, the rate of aging d(log(μ(x)))/dx of Hematopoietic Stem Cells Transplants (HSCTs) patients who had underwent first-allogeneic transplants can be obtained, and to unveil the possibility of elasticity of human aging rate in HSCTs...
2018: PloS One
Seda Onder, Ozden Tacal, Oksana Lockridge
Human butyrylcholinesterase (BChE) is purified in large quantities from Cohn fraction IV-4 to use for protection against the toxicity of chemical warfare agents. Small scale preliminary experiments use outdated plasma from the American Red Cross as the starting material for purifying BChE (P06276). Many of the volunteer donor plasma samples are turbid with fat, the donor having eaten fatty food before the blood draw. The turbid fat interferes with enzyme assays performed in the spectrophotometer and with column chromatography...
2018: Frontiers in Pharmacology
Whitney M Moret
INTRODUCTION: Economic strengthening practitioners are increasingly seeking data collection tools that will help them target households vulnerable to HIV and poor child well-being outcomes, match households to appropriate interventions, monitor their status, and determine readiness for graduation from project support. This article discusses efforts in 3 countries to develop simple, valid tools to quantify and classify economic vulnerability status. METHODS AND FINDINGS: In Côte d'Ivoire, we conducted a cross-sectional survey with 3,749 households to develop a scale based on the definition of HIV-related economic vulnerability from the U...
March 1, 2018: Global Health, Science and Practice
Chang-Lin Wu, Jian-An He, Da-Yong Gu, Chao-Peng Shao, Yi Zhu, Xin-Tang Dang
BACKGROUND: This study was aimed to establish a novel strategy based on the surface plasmon resonance (SPR) technology for platelet compatibility testing. METHODS: A novel surface matrix was prepared based on poly (OEGMA-co-HEMA) via surface-initiated polymerization as a biosensor surface platform. Type O universal platelets and donor platelets were immobilized on these novel matrices via amine-coupling reaction and worked as a capturing ligand for binding the platelet antibody...
January 1, 2018: Clinical Laboratory
Shishi Wu, Helena Legido-Quigley, Julia Spencer, Richard James Coker, Mishal Sameer Khan
BACKGROUND: In light of the gap in evidence to inform future resource allocation decisions about healthcare provider (HCP) training in low- and middle-income countries (LMICs), and the considerable donor investments being made towards training interventions, evaluation studies that are optimally designed to inform local policy-makers are needed. The aim of our study is to understand what features of HCP training evaluation studies are important for decision-making by policy-makers in LMICs...
February 23, 2018: Health Research Policy and Systems
Xiao Dong, Miao Shi, Moonsook Lee, Rafael Toro, Silvia Gravina, Weiguo Han, Shoya Yasuda, Tao Wang, Zhengdong Zhang, Jan Vijg, Yousin Suh, Simon D Spivack
Gene regulatory analysis of highly diverse human tissues in vivo is essentially constrained by the challenge of performing genome-wide, integrated epigenetic and transcriptomic analysis in small selected groups of specific cell types. Here we performed genome-wide bisulfite sequencing and RNA-seq from the same small groups of bronchial and alveolar cells isolated by laser capture microdissection from flash-frozen lung tissue of 12 donors and their peripheral blood T cells. Methylation and transcriptome patterns differed between alveolar and bronchial cells, while each of these epithelia showed more differences from mesodermally-derived T cells...
February 21, 2018: Epigenetics: Official Journal of the DNA Methylation Society
Akira Kawabe, Hiroaki Nukii, Hazuka Y Furihata
Chloroplast capture occurs when the chloroplast of one plant species is introgressed into another plant species. The phylogenies of nuclear and chloroplast markers from East Asian Arabis species are incongruent, which indicates hybrid origin and shows chloroplast capture. In the present study, the complete chloroplast genomes of A. hirsuta , A. nipponica, and A. flagellosa were sequenced in order to analyze their divergence and their relationships. The chloroplast genomes of A. nipponica and A. flagellosa were similar, which indicates chloroplast replacement...
February 18, 2018: International Journal of Molecular Sciences
Yandong Huang, Zhi Yue, Cheng-Chieh Tsai, Jack Henderson, Jana Shen
Despite the relevance for understanding structure-function relationships, robust prediction of proton donors and nucleophiles in enzyme active sites remains challenging. Here we tested three types of state-of-the-art computational methods to calculate the pKa's of the buried and coupled catalytic dyads in five enzymes. We asked the question what determines the pKa order, i.e., what makes a residue proton donor vs. nucleophile. The continuous constant pH molecular dynamics simulations captured the experimental pKa orders and revealed that the negative nucleophile is stabilized by increased hydrogen bonding and solvent exposure as compared to the proton donor...
February 20, 2018: Journal of Physical Chemistry Letters
Fan Liang, Hyuma Leland, Breanna Jedrzejewski, Allyn Auslander, Seija Maniskas, Jordan Swanson, Mark Urata, Jeffrey Hammoudeh, William Magee
Alveolar cleft reconstruction has historically relied on autologous iliac crest bone grafting (ICBG), but donor site morbidity, pain, and prolonged hospitalization have prompted the search for bone graft substitutes. The authors evaluated bone graft substitutes with the highest levels of evidence, and highlight the products that show promise in alveolar cleft repair and in maxillary augmentation. This comprehensive review guides the craniofacial surgeon toward safe and informed utilization of biomaterials in the alveolar cleft...
February 14, 2018: Journal of Craniofacial Surgery
Andrew Chancellor, Stephan D Gadola, Salah Mansour
The family of non-classical MHC class-I like CD1 molecules has an emerging role in human disease. Group 1 CD1 includes CD1a, CD1b, and CD1c which function to display lipids on the cell surface of antigen presenting cells for direct recognition by T cells. The recent advent of CD1 tetramers and the identification of novel lipid ligands has contributed towards the increasing number of CD1 restricted T cell clones captured. These advances have helped to identify novel donor unrestricted and semi-invariant T cell populations in humans and new mechanisms of T cell recognition...
February 20, 2018: Immunology
Marcus Lundberg, Anton Stenwall, Angie Tegehall, Olle Korsgren, Oskar Skog
It is currently unknown how the islet transcriptional pattern changes as glucose metabolism deteriorates and progresses to fulminant type 2 diabetes (T2D). In this study, we hypothesized that islets from donors with elevated HbA1c levels, but not yet diagnosed with T2D, would show signs of cell stress on a transcriptional level. Laser capture microdissection and qPCR arrays including 330 genes related to mitochondria, oxidative stress, or the unfolded protein response were used to extract and analyze islets from organ donors with HbA1c <5...
February 15, 2018: Islets
G Kakourou, S Kahraman, G C Ekmekci, H A Tac, G Kourlaba, E Kourkouni, A Cervero Sanz, J Martin, H Malmgren, C Giménez, V Gold, F Carvalho, C Billi, J F C Chow, X Vendrell, G Kokkali, J Liss, J Steffann, J Traeger-Synodinos
STUDY QUESTION: Has PGD-HLA been successful relative to diagnostic and clinical efficacy? SUMMARY ANSWER: The diagnostic efficacy of PGD-HLA protocols was found lower in this study in comparison to published PGD-HLA protocols and to that reported for general PGD by ESHRE (78.5 vs 94.1% and vs 92.6%, respectively), while the clinical efficacy has proven very difficult to assess due to inadequate follow-up of both the ART/PGD and HSCT procedure outcomes. WHAT IS KNOWN ALREADY: The first clinical cases for PGD-HLA were reported in 2001...
February 8, 2018: Human Reproduction
Trygve Ottersen, Karen A Grépin, Klara Henderson, Crossley Beth Pinkstaff, Ole Frithjof Norheim, John-Arne Røttingen
The distributions of income and health within and across countries are changing. This challenges the way donors allocate development assistance for health (DAH) and particularly the role of gross national income per capita (GNIpc) in classifying countries to determine whether countries are eligible to receive assistance and how much they receive. Informed by a literature review and stakeholder consultations and interviews, we developed a stepwise approach to the design and assessment of country classification frameworks for the allocation of DAH, with emphasis on critical value choices...
February 1, 2018: Health Policy and Planning
Olivier Sterck, Max Roser, Mthuli Ncube, Stefan Thewissen
Gross national income (GNI) per capita is widely regarded as a key determinant of health outcomes. Major donors heavily rely on GNI per capita to allocate development assistance for health (DAH). This article questions this paradigm by analysing the determinants of health outcomes using cross-sectional data from 99 countries in 2012. We use disability-adjusted life years (Group I) per capita as our main indicator for health outcomes. We consider four primary variables: GNI per capita, institutional capacity, individual poverty and the epidemiological surroundings...
February 1, 2018: Health Policy and Planning
Praopim Limsakul, Qin Peng, Yiqian Wu, Molly E Allen, Jing Liang, Albert G Remacle, Tyler Lopez, Xin Ge, Brian K Kay, Huimin Zhao, Alex Y Strongin, Xiang-Lei Yang, Shaoying Lu, Yingxiao Wang
Monitoring enzymatic activities at the cell surface is challenging due to the poor efficiency of transport and membrane integration of fluorescence resonance energy transfer (FRET)-based biosensors. Therefore, we developed a hybrid biosensor with separate donor and acceptor that assemble in situ. The directed evolution and sequence-function analysis technologies were integrated to engineer a monobody variant (PEbody) that binds to R-phycoerythrin (R-PE) dye. PEbody was used for visualizing the dynamic formation/separation of intercellular junctions...
January 26, 2018: Cell Chemical Biology
Yan Wang, ZhongSheng Sun, Moshe Szyf
S-adenosyl methionine (SAM) is a ubiquitous methyl donor that was reported to have chemo- protective activity against liver cancer, however the molecular footprint of SAM is unknown. We show here that SAM selectively inhibits growth, transformation and invasiveness of hepatocellular carcinoma cell lines but not normal primary liver cells. Analysis of the transcriptome of SAM treated and untreated liver cancer cell lines HepG2 and SKhep1 and primary liver cells reveals pathways involved in cancer and metastasis that are upregulated in cancer cells and are downregulated by SAM...
December 19, 2017: Oncotarget
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