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https://www.readbyqxmd.com/read/28651173/development-validation-and-clinical-application-of-a-method-for-the-simultaneous-quantification-of-lamivudine-emtricitabine-and-tenofovir-in-dried-blood-and-dried-breast-milk-spots-using-lc-ms-ms
#1
Catriona Waitt, Sujan Diliiy Penchala, Adeniyi Olagunju, Alieu Amara, Laura Else, Mohammed Lamorde, Saye Khoo
OBJECTIVES: To present the validation and clinical application of a LC-MS/MS method for the quantification of lamivudine (3TC), emtricitabine (FTC) and tenofovir (TFV) in dried blood spots (DBS) and dried breast milk spots (DBMS). METHODS: DBS and DBMS were prepared from 50 and 30μL of drug-spiked whole blood and human breast milk, respectively. Following extraction with acetonitrile and water, chromatographic separation utilised a Synergi polar column with a gradient mobile phase program consisting of 0...
June 17, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28651161/connexin-43-mediates-changes-in-protein-phosphorylation-in-hk-2-cells-during-chronic-cadmium-exposure
#2
Zehe Ge, Haipeng Diao, Maohui Yu, Xiaoli Ji, Qingping Liu, Xiuli Chang, Qing Wu
Connexin 43 (Cx43) is believed to play a role in the mechanisms of toxicity of many chemical species, include cadmium (Cd). In this study, human renal proximal tubule (HK-2) cells were exposed to Cd (1μM, 10 days). Of the 584 protein residues detected using a Phospho Explorer antibody microarray (PEX100), more than half changed their levels of phosphorylation after chronic Cd exposure. Cx43 siRNA attenuated Cd-induced apoptosis and inhibited proliferation, while also attenuating changes in the levels of phosphorylation of many protein residues...
June 20, 2017: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/28651077/rhizopus-oryzae-ancient-microbial-resource-with-importance-in-modern-food-industry
#3
REVIEW
Liliana Londoño-Hernández, Cristina Ramírez-Toro, Héctor A Ruiz, Juan A Ascacio-Valdés, Miguel A Aguilar-Gonzalez, Raúl Rodríguez-Herrera, Cristóbal N Aguilar
Filamentous fungi are microorganisms widely known for their diverse biochemical features. Fungi can efficiently invade a wide variety of substrates under operational conditions producing numerous bioproducts of interest, such as enzymes, organic acids, aromatic compounds and colorants. An additional interesting characteristic of some fungi is their safety classification for different uses, which guarantees that the bioproducts obtained from them do not contain any toxic component deleterious to humans. Rhizopus oryzae is among this group of fungi and is classified as a GRAS filamentous fungus, commonly used for production of some oriental traditional foods...
June 15, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/28651066/thalassemia-major-transfusion-and-chelation-or-transplantation
#4
REVIEW
Said Yousuf Mohamed
Thalassemia is the most common monogenic hematologic disease that affects millions in the world and kills thousands of patients every year. Without transfusion or transplantation, patients with thalassemia major are expected to die within months of diagnosis. However, long-term transfusion and chelation therapy is highly challenging for many developing countries where the disease is prevalent, representing a major and unsustainable health burden. Stem cell transplantation is the only cure for thalassemia. It has witnessed major developments that have made it less toxic, more successful, and feasible for a larger number of patients with diverse comorbidities and from a wider range of donors...
June 20, 2017: Hematology/oncology and Stem Cell Therapy
https://www.readbyqxmd.com/read/28650870/managing-knowledge-in-transitions-experiences-of-health-care-leaders-in-succession-planning
#5
Shannon L Sibbald, C Nadine Wathen, Anita Kothari
Effective and efficient methods of succession planning are integral to the success of organizations across the health care system. We explored current health organizations' senior leadership transition processes. Participants were in senior level leadership and decision-making positions in hospitals within Ontario, Canada. Most of the participants did not have formal transition plans and instead relied on the human resources department to plan for succession. We discuss these processes through three themes: (1) preplanning for a transition, (2) the transition process, and (3) barriers to successful transitions...
June 23, 2017: Health Care Manager
https://www.readbyqxmd.com/read/28650520/immature-midbrain-dopaminergic-neurons-derived-from-floor-plate-method-improve-cell-transplantation-therapy-efficacy-for-parkinson-s-disease
#6
Lifeng Qiu, Mei-Chih Liao, Allen K Chen, Shunhui Wei, Shaoping Xie, Shaul Reuveny, Zhi Dong Zhou, Walter Hunziker, Eng King Tan, Steve K W Oh, Li Zeng
Recent reports have indicated human embryonic stem cells-derived midbrain dopamine (mDA) neurons as proper cell resources for use in Parkinson's disease (PD) therapy. Nevertheless, no detailed and systematic study has been conducted to identify which differentiation stages of mDA cells are most suitable for transplantation in PD therapy. Here, we transplanted three types of mDA cells, DA progenitors (differentiated in vitro for 16 days [D16]), immature DA neurons (D25), and DA neurons (D35), into PD mice and found that all three types of cells showed high viability and strong neuronal differentiation in vivo...
June 26, 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28649808/development-of-a-real-time-loop-mediated-isothermal-amplification-assay-for-detection-of-burkholderia-mallei
#7
V Pal, A Saxena, S Singh, A K Goel, J S Kumar, M M Parida, G P Rai
Burkholderia mallei is the aetiological agent of glanders, a highly contagious and re-emerging zoonotic disease. Early diagnosis of glanders is critically important to ensure timely treatment with appropriate antibiotics in humans, and to prevent spread of infection in animals. Molecular detection of B. mallei has always been troublesome because of its genetic similarity with Burkholderia pseudomallei, the causative agent of melioidosis. In present investigation, a set of six B. mallei-specific primers were designed and a simple, rapid, specific and sensitive real-time loop-mediated isothermal amplification (LAMP) assay was developed for detection of B...
June 25, 2017: Transboundary and Emerging Diseases
https://www.readbyqxmd.com/read/28649638/a-cubesat-centrifuge-for-long-duration-milligravity-research
#8
REVIEW
Erik Asphaug, Jekan Thangavelautham, Andrew Klesh, Aman Chandra, Ravi Nallapu, Laksh Raura, Mercedes Herreras-Martinez, Stephen Schwartz
We advocate a low-cost strategy for long-duration research into the 'milligravity' environment of asteroids, comets and small moons, where surface gravity is a vector field typically less than 1/1000 the gravity of Earth. Unlike the microgravity environment of space, there is a directionality that gives rise, over time, to strangely familiar geologic textures and landforms. In addition to advancing planetary science, and furthering technologies for hazardous asteroid mitigation and in situ resource utilization, simplified access to long-duration milligravity offers significant potential for advancing human spaceflight, biomedicine and manufacturing...
2017: NPJ Microgravity
https://www.readbyqxmd.com/read/28649439/mechanisms-of-action-of-sacubitril-valsartan-on-cardiac-remodeling-a-systems-biology-approach
#9
Oriol Iborra-Egea, Carolina Gálvez-Montón, Santiago Roura, Isaac Perea-Gil, Cristina Prat-Vidal, Carolina Soler-Botija, Antoni Bayes-Genis
Sacubitril/Valsartan, proved superiority over other conventional heart failure management treatments, but its mechanisms of action remains obscure. In this study, we sought to explore the mechanistic details for Sacubitril/Valsartan in heart failure and post-myocardial infarction remodeling, using an in silico, systems biology approach. Myocardial transcriptome obtained in response to myocardial infarction in swine was analyzed to address post-infarction ventricular remodeling. Swine transcriptome hits were mapped to their human equivalents using Reciprocal Best (blast) Hits, Gene Name Correspondence, and InParanoid database...
2017: NPJ Systems Biology and Applications
https://www.readbyqxmd.com/read/28649236/the-validation-and-implications-of-using-whole-genome-sequencing-as-a-replacement-for-traditional-serotyping-for-a-national-salmonella-reference-laboratory
#10
Chris A Yachison, Catherine Yoshida, James Robertson, John H E Nash, Peter Kruczkiewicz, Eduardo N Taboada, Matthew Walker, Aleisha Reimer, Sara Christianson, Anil Nichani, Celine Nadon
Salmonella serotyping remains the gold-standard tool for the classification of Salmonella isolates and forms the basis of Canada's national surveillance program for this priority foodborne pathogen. Public health officials have been increasingly looking toward whole genome sequencing (WGS) to provide a large set of data from which all the relevant information about an isolate can be mined. However, rigorous validation and careful consideration of potential implications in the replacement of traditional surveillance methodologies with WGS data analysis tools is needed...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28648637/xyloglucan-a-functional-biomacromolecule-for-drug-delivery-applications
#11
REVIEW
Abhijeet D Kulkarni, Aditya A Joshi, Chirag L Patil, Prasad D Amale, Harun M Patel, Sanjay J Surana, Veena S Belgamwar, Kapil S Chaudhari, Chandrakantsing V Pardeshi
The near future of drug delivery system would lie in the search of a versatile and innocuous material, based mostly on the natural resources. The tamarind seed xyloglucan (XG) is a natural, hydrophilic polysaccharide consisting of a main chain of glucan backbone with xylose and galactose side chains. XG is endowed with idiosyncratic mucoadhesive and in situ gelling properties which rated XG as an attractive, functional polymer for numerous drug delivery applications. In milieu of this, the present review is designed to underline the plausible potential of XG or XG-based systems in drug delivery...
June 22, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28648605/a-semi-supervised-approach-using-label-propagation-to-support-citation-screening
#12
Georgios Kontonatsios, Austin J Brockmeier, Piotr Przybyła, John McNaught, Tingting Mu, John Y Goulermas, Sophia Ananiadou
Citation screening, an integral process within systematic reviews that identifies citations relevant to the underlying research question, is a time-consuming and resource-intensive task. During the screening task, analysts manually assign a label to each citation, to designate whether a citation is eligible for inclusion in the review. Recently, several studies have explored the use of active learning in text classification to reduce the human workload involved in the screening task. However, existing approaches require a significant amount of manually labelled citations for the text classification to achieve a robust performance...
June 22, 2017: Journal of Biomedical Informatics
https://www.readbyqxmd.com/read/28648307/comparison-on-human-resource-requirement-between-manual-and-automated-dispensing-systems
#13
Prapaporn Noparatayaporn, Rungpetch Sakulbumrungsil, Tanita Thaweethamcharoen, Wunwisa Sangseenil
OBJECTIVE: This study was conducted to compare human resource requirement among manual, automated, and modified automated dispensing systems. METHODS: Data were collected from the pharmacy department at the 2100-bed university hospital (Siriraj Hospital, Bangkok, Thailand). Data regarding the duration of the medication distribution process were collected by using self-reported forms for 1 month. The data on the automated dispensing machine (ADM) system were obtained from 1 piloted inpatient ward, whereas those on the manual system were the average of other wards...
May 2017: Value in Health Regional Issues
https://www.readbyqxmd.com/read/28647609/a-machine-learning-approach-for-automated-wide-range-frequency-tagging-analysis-in-embedded-neuromonitoring-systems
#14
Fabio Montagna, Marco Buiatti, Simone Benatti, Davide Rossi, Elisabetta Farella, Luca Benini
EEG is a standard non-invasive technique used in neural disease diagnostics and neurosciences. Frequency-tagging is an increasingly popular experimental paradigm that efficiently tests brain function by measuring EEG responses to periodic stimulation. Recently, frequency-tagging paradigms have proven successful with low stimulation frequencies (0.5 - 6 Hz), but the EEG signal is intrinsically noisy in this frequency range, requiring heavy signal processing and significant human intervention for response estimation...
June 21, 2017: Methods: a Companion to Methods in Enzymology
https://www.readbyqxmd.com/read/28646900/human-umbilical-cord-stem-cell-conditioned-medium-versus-serum-free-culture-medium-in-the-treatment-of-cryopreserved-human-ovarian-tissues-in-in-vitro-culture-a-randomized-controlled-trial
#15
Yingxian Jia, Xiaohan Shi, Yidong Xie, Xiaochuan Xie, Yan Wang, Shangwei Li
BACKGROUND: To reduce young female fertility loss, the in-vitro culture of cryopreserved ovarian cortical tissues (OCTs) is considered an effective approach without delaying treatment and undergoing stimulation medicine. However, ischemic damage and follicular loss during the in-vitro culture of OCTs are major technical challenges. Human umbilical cord stem cells (HUMSCs) and their conditioned medium (HUMSC-CM) have been considered to be potential resources for regeneration medicine because they secrete cytokines and enhance cell survival and function...
June 24, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28646208/a-comprehensive-mouse-transcriptomic-bodymap-across-17-tissues-by-rna-seq
#16
Bin Li, Tao Qing, Jinhang Zhu, Zhuo Wen, Ying Yu, Ryutaro Fukumura, Yuanting Zheng, Yoichi Gondo, Leming Shi
The mouse has been widely used as a model organism for studying human diseases and for evaluating drug safety and efficacy. Many diseases and drug effects exhibit tissue specificity that may be reflected by tissue-specific gene-expression profiles. Here we construct a comprehensive mouse transcriptomic BodyMap across 17 tissues of six-weeks old C57BL/6JJcl mice using RNA-seq. We find different expression patterns between protein-coding and non-coding genes. Liver expressed the least complex transcriptomes, that is, the smallest number of genes detected in liver across all 17 tissues, whereas testis and ovary harbor more complex transcriptomes than other tissues...
June 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28645144/increased-alignment-sensitivity-improves-the-usage-of-genome-alignments-for-comparative-gene-annotation
#17
Virag Sharma, Michael Hiller
Genome alignments provide a powerful basis to transfer gene annotations from a well-annotated reference genome to many other aligned genomes. The completeness of these annotations crucially depends on the sensitivity of the underlying genome alignment. Here, we investigated the impact of the genome alignment parameters and found that parameters with a higher sensitivity allow the detection of thousands of novel alignments between orthologous exons that have been missed before. In particular, comparisons between species separated by an evolutionary distance of >0...
June 21, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28644920/genome-scale-metabolic-models-applied-to-human-health-and-disease
#18
REVIEW
Daniel J Cook, Jens Nielsen
Advances in genome sequencing, high throughput measurement of gene and protein expression levels, data accessibility, and computational power have allowed genome-scale metabolic models (GEMs) to become a useful tool for understanding metabolic alterations associated with many different diseases. Despite the proven utility of GEMs, researchers confront multiple challenges in the use of GEMs, their application to human health and disease, and their construction and simulation in an organ-specific and disease-specific manner...
June 23, 2017: Wiley Interdisciplinary Reviews. Systems Biology and Medicine
https://www.readbyqxmd.com/read/28644153/louisiana-physicians-are-increasing-hpv-vaccination-rates
#19
Donna L Williams, Courtney S Wheeler, Michelle Lawrence, Stacy S Hall, Michael Hagensee
Human papilloma virus (HPV) is a common virus that can cause genital warts and certain cancers. The HPV vaccine is effective in preventing many HPV-associated diseases, however, vaccination rates suggest many remain unprotected. This study examined successful strategies used by physicians to improve HPV vaccination rates. Providers with above average vaccination rates were identified. A representative from each provider participated in an interview to identify strategies used to boost HPV vaccination. Key strategies in ensuring vaccine completion were reminders, education, standing orders, and scheduling future vaccine appointments at time of first dose...
May 2017: Journal of the Louisiana State Medical Society: Official Organ of the Louisiana State Medical Society
https://www.readbyqxmd.com/read/28644057/the-implementation-of-medical-monitoring-programs-following-potentially-hazardous-exposures-a-medico-legal-perspective
#20
David Vearrier, Michael I Greenberg
CONTEXT: Clinical toxicologists may be called upon to determine the appropriateness of medical monitoring following documented or purported exposures to toxicants in the occupational, environmental, and medical settings. METHODS: We searched the MEDLINE database using the Ovid(®) search engine for the following terms cross-referenced to the MeSH database: ("occupational exposures" OR "environmental exposures") AND ("physiologic monitoring" OR "population surveillance")...
June 23, 2017: Clinical Toxicology
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