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https://www.readbyqxmd.com/read/29239600/exonuclease-iii-assisted-upconversion-resonance-energy-transfer-in-a-wash-free-suspension-dna-assay
#1
Yinghui Chen, Hien Duong, Shihui Wen, Chao Mi, Yingzhu Zhou, Olga Shimoni, Stella M Valenzuela, Dayong Jin
Sensitivity is the key in optical detection of low-abundant analytes, such as circulating RNA or DNA. The enzyme Exonuclease III (Exo III) is a useful tool in this regard; its ability to recycle target DNA molecules results in markedly improved detection sensitivity. Lower limits of detection may be further achieved if the detection background of auto-fluorescence can be removed. Here we report an ultrasensitive and specific method to quantify trace amounts of DNA analytes in a wash-free suspension assay. In the presence of target DNA, the Exo III recycles the target DNA by selectively digesting the dye-tagged sequence-matched probe DNA strand only, so that the amount of free dye removed from the probe DNA is proportional to the number of target DNAs...
December 14, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/29233822/hematopoietic-stem-cell-gene-therapy-for-ifn%C3%AE-r1-deficiency-protects-mice-from-mycobacterial-infections
#2
Miriam Hetzel, Adele Mucci, Patrick Blank, Ariane Hai Ha Nguyen, Jan Schiller, Olga Halle, Mark-Philipp Kühnel, Sandra Billig, Robert Meineke, Daniel Brand, Vanessa Herder, Wolfgang Baumgärtner, Franz-Christoph Bange, Ralph Goethe, Danny Jonigk, Reinhold Förster, Bernhard Gentner, Jean-Laurent Casanova, Jacinta Bustamante, Axel Schambach, Ulrich Kalinke, Nico Lachmann
Mendelian Susceptibility to Mycobacterial Disease (MSMD) is a rare primary immunodeficiency, characterized by severe infections caused by weakly virulent mycobacteria. Bi-allelic null mutations in genes encoding interferon gamma (IFNγ) receptor 1 or -2 (IFNGR1, IFNGR2) result in a life-threatening disease phenotype in early childhood. Recombinant IFNγ therapy is inefficient and hematopoietic stem cell transplantation (HSCT) has a poor prognosis. Thus, we developed a HSC gene therapy approach using lentiviral vectors expressing Ifnγr1 either constitutively or myeloid-specifically...
December 12, 2017: Blood
https://www.readbyqxmd.com/read/29231134/plant-made-antibodies-properties-and-therapeutic-applications
#3
Tatianamsu Ru V Komarova, Ekaterina V Sheshukova, Yuri L Dorokhov
A cost-effective plant platform for therapeutic monoclonal antibody production is both flexible and scalable. In addition, plant-made antibodies (PMAbs) could be advantageous compared to those produced in animal cells due to the absence of a risk of contamination from nucleic acids or proteins of animal origin. In this review, the various platforms of PMAbs production are described, and the widely used transient expression system based on Agrobacterium-mediated delivery of genetic material into plant cells is discussed in detail...
December 11, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/29231058/efaverinz-and-nano-gold-loaded-mannosylated-niosomes-a-host-cell-targeted-topical-hiv-1-prophylaxis-via-thermogel-system
#4
Tanushree Malik, Gaurav Chauhan, Goutam Rath, Rohan N Kesarkar, Abhay S Chowdhary, Amit K Goyal
Sexual dissemination of Human Immunodeficiency Virus-1 (HIV-1) is the prime mode of its spread. Topical microbicidal approach has gained much attention, but no real success is observed till date, either due to toxicity or resistance of active moieties and the lack of efficient drug delivery approaches. In this research protocol, a unique combination approach of a standard drug moiety, that is, Efaverinz (EFV) and a nanometal, that is, gold nanoparticles (GNPs) was tried. Both these candidates were delivered through a mannosylated niosomal system, to exploit protein (lectins present on HIV host cells) - carbohydrate (oligosaccharides such as mannan present on HIV gp-120 receptor) interaction...
December 12, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29230214/exome-sequencing-identifies-a-novel-map3k14-mutation-in-recessive-atypical-combined-immunodeficiency
#5
Nikola Schlechter, Brigitte Glanzmann, Eileen Garner Hoal, Mardelle Schoeman, Britt-Sabina Petersen, Andre Franke, Yu-Lung Lau, Michael Urban, Paul David van Helden, Monika Maria Esser, Marlo Möller, Craig Kinnear
Primary immunodeficiency disorders (PIDs) render patients vulnerable to infection with a wide range of microorganisms and thus provide good in vivo models for the assessment of immune responses during infectious challenges. Priming of the immune system, especially in infancy, depends on different environmental exposures and medical practices. This may determine the timing and phenotype of clinical appearance of immune deficits as exemplified with early exposure to Bacillus Calmette-Guérin (BCG) vaccination and dissemination in combined immunodeficiencies...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29227443/associations-between-medicare-part-d-and-out-of-pocket-spending-hiv-viral-load-adherence-and-adap-use-in-dual-eligibles-with-hiv
#6
Nadya Belenky, Brian W Pence, Stephen R Cole, Stacie B Dusetzina, Andrew Edmonds, Jonathan Oberlander, Michael W Plankey, Adebola Adedimeji, Tracey E Wilson, Jennifer Cohen, Mardge H Cohen, Joel E Milam, Elizabeth T Golub, Adaora A Adimora
BACKGROUND: The implementation of Medicare part D on January 1, 2006 required all adults who were dually enrolled in Medicaid and Medicare (dual eligibles) to transition prescription drug coverage from Medicaid to Medicare part D. Changes in payment systems and utilization management along with the loss of Medicaid protections had the potential to disrupt medication access, with uncertain consequences for dual eligibles with human immunodeficiency virus (HIV) who rely on consistent prescription coverage to suppress their HIV viral load (VL)...
January 2018: Medical Care
https://www.readbyqxmd.com/read/29219811/non-targeted-hiv-screening-in-emergency-departments-in-the-netherlands
#7
G P M Luiken, I K Joore, A Taselaar, S C E Schuit, S E Geerlings, A Govers, P P M Rood, J M Prins, B E Nichols, A Verbon, T E M S de Vries-Sluijs
BACKGROUND: In the Netherlands a substantial proportion of newly diagnosed human immunodeficiency virus (HIV) patients present late for care and an estimated 12-34% of people living with HIV are undiagnosed. Linkage to care of these patients is important to decrease HIV transmission and to improve individual patient outcomes. We investigated if non-targeted HIV testing in emergency departments is a useful and cost-effective way to identify these patients. METHODS: In a cross-sectional multicentre study, eligible adult patients who underwent phlebotomy were given an active choice to be additionally tested for HIV...
November 2017: Netherlands Journal of Medicine
https://www.readbyqxmd.com/read/29215267/new-structural-insights-into-formation-of-the-key-actin-regulating-wip-wasp-complex-determined-by-nmr-and-molecular-imaging
#8
Adi Halle-Bikovski, Sophia Fried, Eva Rozentur-Shkop, Guy Biber, Hadassa Shaked, Noah Joseph, Mira Barda-Saad, Jordan H Chill
Wiskott-Aldrich syndrome protein (WASp) is exclusively expressed in hematopoietic cells and responsible for actin-dependent processes, including cellular activation, migration, and invasiveness. The C-terminal domain of WASp-Interacting Protein (WIP) binds to WASp and regulates its activity by shielding it from degradation in a phosphorylation dependent manner as we previously demonstrated. Mutations in the WAS-encoding gene lead to the primary immunodeficiencies Wiskott-Aldrich syndrome (WAS) and X-linked thrombocytopenia (XLT)...
December 7, 2017: ACS Chemical Biology
https://www.readbyqxmd.com/read/29213274/natural-killer-cells-in-antifungal-immunity
#9
REVIEW
Stanislaw Schmidt, Lars Tramsen, Thomas Lehrnbecher
Invasive fungal infections are still an important cause of morbidity and mortality in immunocompromised patients such as patients suffering from hematological malignancies or patients undergoing hematopoietic stem cell transplantion. In addition, other populations such as human immunodeficiency virus-patients are at higher risk for invasive fungal infection. Despite the availability of new antifungal compounds and better supportive care measures, the fatality rate of invasive fungal infection remained unacceptably high...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29210536/hiv-and-aids-an-overview-of-the-current-issues-treatment-and-prevention
#10
Elizabeth Anne Crock
The theme of World AIDS Day 2017 is 'let's end it'. After almost 40 years since the first occurrences of human immunodeficiency virus (HIV), it is possible to envision an end to the HIV epidemic, one of the most serious health and development challenges humanity has faced. This article provides an overview of the current approaches to the treatment, care and support of people living with HIV and acquired immune deficiency syndrome (AIDS). It also discusses the challenges associated with HIV and AIDS that remain, HIV prevention strategies, and the nurse's role in caring for people living with HIV...
December 6, 2017: Nursing Standard
https://www.readbyqxmd.com/read/29208587/hiv-surveillance-among-pregnant-women-attending-antenatal-clinics-evolution-and-current-direction
#11
Jacob Dee, Jesus M Garcia Calleja, Kimberly Marsh, Irum Zaidi, Christopher Murrill, Mahesh Swaminathan
Since the late 1980s, human immunodeficiency virus (HIV) sentinel serosurveillance among pregnant women attending select antenatal clinics (ANCs) based on unlinked anonymous testing (UAT) has provided invaluable information for tracking HIV prevalence and trends and informing global and national HIV models in most countries with generalized HIV epidemics. However, increased coverage of HIV testing, prevention of mother-to-child transmission (PMTCT), and antiretroviral therapy has heightened ethical concerns about UAT...
December 5, 2017: JMIR Public Health and Surveillance
https://www.readbyqxmd.com/read/29204384/approach-to-a-child-with-primary-immunodeficiency-made-simple
#12
REVIEW
Dhrubajyoti Sharma, Ankur K Jindal, Amit Rawat, Surjit Singh
Primary immunodeficiency disorders (PIDs) are a group of disorders affecting the capability to fight against infection. These include defects in T cells and B cells affecting cell-mediated and humoral immunity, respectively, combined humoral and cell-mediated immunodeficiency, defects in phagocytosis, complement defects, and defects in cytokine or cytokine signalling pathways which are detrimental for immune function. Depending upon the type and severity, age at onset of symptoms can vary from neonatal period to late childhood...
November 2017: Indian Dermatology Online Journal
https://www.readbyqxmd.com/read/29202081/phylodynamic-applications-in-21st-century-global-infectious-disease-research
#13
Brittany D Rife, Carla Mavian, Xinguang Chen, Massimo Ciccozzi, Marco Salemi, Jae Min, Mattia Cf Prosperi
Background: Phylodynamics, the study of the interaction between epidemiological and pathogen evolutionary processes within and among populations, was originally defined in the context of rapidly evolving viruses and used to characterize transmission dynamics. The concept of phylodynamics has evolved since the early 21st century, extending its reach to slower-evolving pathogens, including bacteria and fungi, and to the identification of influential factors in disease spread and pathogen population dynamics...
2017: Global Health Research and Policy
https://www.readbyqxmd.com/read/29194124/humanized-mouse-models-to-study-pathophysiology-and-treatment-of-hiv-infection
#14
Guillemette Masse-Ranson, Hugo Mouquet, James P Di Santo
PURPOSE OF REVIEW: Immunodeficient mice that lack all lymphocyte subsets and have phagocytic cells that are tolerant of human cells can be stably xenografted with human hematopoietic stem cell as well as other human tissues (fetal liver and thymus) creating 'human immune system' (HIS) mice. HIS mice develop all major human lymphocyte classes (B, T, natural killer, and innate lymphoid cell) and their specialized subsets as well as a variety of myeloid cells (dendritic cell, monocytes, and macrophages) thereby providing a small animal model in which to interrogate human immune responses to infection...
November 30, 2017: Current Opinion in HIV and AIDS
https://www.readbyqxmd.com/read/29192171/a-strategy-for-effective-latent-hiv-reactivation-using-subtherapeutic-drug-doses
#15
James Cotterell, Greg Neely
Cell state switches underlie a plethora of biological phenomena and disease treatment strategies. Hence the ability to efficiently switch states in a chosen direction is of central importance in a number of scenarios. Increasing the concentration of an effector that results in a given switch is often limited by side effects. Approaches are thus increasingly sought to bypass these constraints, increasing the frequency of state switching without increasing the frequency of the side effect. Here, we employ dynamical systems theory to uncover a simple strategy as to how to maximize the probability of reactivating latent Human immunodeficiency virus (HIV) whilst maintaining minimal side effects...
November 30, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29190337/optimizing-research-to-speed-up-availability-of-pediatric-antiretroviral-drugs-and-formulations
#16
Martina Penazzato, Devasena Gnanashanmugam, Pablo Rojo, Marc Lallemant, Linda L Lewis, Francesca Rocchi, Agnes Saint Raymond, Nathan Ford, Rohan Hazra, Carlo Giaquinto, Yodit Belew, Diana M Gibb, Elaine J Abrams
Globally 1.8 million children are living with human immunodeficiency virus (HIV), yet only 51% of those eligible actually start treatment. Research and development (R&D) for pediatric antiretrovirals (ARVs) is a lengthy process and lags considerably behind drug development in adults. Providing safe, effective, and well-tolerated drugs for children remains critical to ensuring scale-up globally. We review current approaches to R&D for pediatric ARVs and suggest innovations to enable simplified, faster, and more comprehensive strategies to develop optimal formulations...
June 1, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29183868/providing-home-based-hiv-testing-and-counseling-for-transgender-youth-project-moxie-protocol-for-a-pilot-randomized-controlled-trial
#17
Rob Stephenson, Nicholas Metheny, Akshay Sharma, Stephen Sullivan, Erin Riley
BACKGROUND: Transgender and gender nonconforming people experience some of the highest human immunodeficiency virus (HIV) rates in the United States, and experience many structural and behavioral barriers that may limit their engagement in HIV testing, prevention, and care. Evidence suggests that transgender and gender nonconforming youth (TY) are especially vulnerable to acquiring HIV, yet there is little research on TY and few services are targeted towards HIV testing, prevention, and care for this population...
November 28, 2017: JMIR Research Protocols
https://www.readbyqxmd.com/read/29181272/new-insights-in-the-use-of-immunoglobulins-for-the-management-of-immune-deficiency-pid-patients
#18
REVIEW
Gergely Krivan, Stephen Jolles, Eduardo Lopes Granados, Phillipe Paolantonacci, Rabye Ouaja, Ousmane Alfa Cissé, Ewa Bernatowska
Immunoglobulin replacement therapy (IRT) is standard treatment for patients with primary immunodeficiency (PID). Because most of the patients with PID will require long life-time immunoglobulin replacement therapy, the quality of the prescribed products is of utmost importance. The IRT is generally administered either intravenously (abbreviated IVIG), or subcutaneously (abbreviated SCIG). Both routes have been demonstrated to be effective. The preferred route may vary at different times during a given patient's life...
2017: American Journal of Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/29173570/-refusal-of-care-by-a-hiv-positive-adolescent-role-of-the-cross-cultural-approach
#19
Nora Bouaziz, Alice Titia Rizzi
The refusal of treatment is frequent in human immunodeficiency virus-positive adolescents. The clinical history of a teenage girl presenting severe immunodepression secondary to the virus, a depressive disorder and a refusal of treatment, illustrates the benefit of combined paediatric, child psychiatric and cross-cultural care as proposed by the Cochin-Paris Adolescent Centre. Working on the meaning of the refusal was a prerequisite for the construction of a care project forming part of a life project, as the psychopathological work could only begin once somatic care ensuring the patient's protection was in place...
November 2017: Soins. Psychiatrie
https://www.readbyqxmd.com/read/29171449/risk-factors-for-tuberculosis-mortality-in-a-tertiary-care-center-in-oman-2006-2016
#20
Zied A Gaifer
BACKGROUND: Mortality from tuberculosis (TB) remains high despite its declining global incidence. Host risk factors of TB death have not been fully identified. The aim of this study is to explore some of the host risk factors associated with TB mortality. METHODS: We conducted a retrospective cross-sectional review of patients with TB admitted to Sultan Qaboos University Hospital in Oman from July 2006 to February 2016. Multivariate logistic regression analyses were used to evaluate the risk factors for TB mortality...
October 2017: International Journal of Mycobacteriology
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