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https://www.readbyqxmd.com/read/28345871/in-vivo-targeting-and-positron-emission-tomography-imaging-of-tumor-with-intrinsically-radioactive-metal-organic-frameworks-nanomaterials
#1
Daiqin Chen, Dongzhi Yang, Casey A Dougherty, Weifei Lu, Hongwei Wu, Xianran He, Ting Cai, Marcian E Van Dort, Brian D Ross, Hao Hong
Nanoscale metal-organic frameworks (nMOF) materials represent an attractive tool for various biomedical applications. Due to the chemical versatility, enormous porosity, and tunable degradability of nMOFs, they have been adopted as carriers for delivery of imaging and/or therapeutic cargos. However, the relatively low stability of most nMOFs has limited practical in vivo applications. Here we report the production and characterization of an intrinsically radioactive UiO-66 nMOF ((89)Zr-UiO-66) with incorporation of positron-emitting isotope zirconium-89 ((89)Zr)...
March 28, 2017: ACS Nano
https://www.readbyqxmd.com/read/28343096/sd-sem-sparse-dense-correspondence-for-3d-reconstruction-of-microscopic-samples
#2
Ahmadreza Baghaie, Ahmad P Tafti, Heather A Owen, Roshan M D'Souza, Zeyun Yu
Scanning electron microscopy (SEM) imaging has been a principal component of many studies in biomedical, mechanical, and materials sciences since its emergence. Despite the high resolution of captured images, they remain two-dimensional (2D). In this work, a novel framework using sparse-dense correspondence is introduced and investigated for 3D reconstruction of stereo SEM images. SEM micrographs from microscopic samples are captured by tilting the specimen stage by a known angle. The pair of SEM micrographs is then rectified using sparse scale invariant feature transform (SIFT) features/descriptors and a contrario RANSAC for matching outlier removal to ensure a gross horizontal displacement between corresponding points...
March 20, 2017: Micron: the International Research and Review Journal for Microscopy
https://www.readbyqxmd.com/read/28340482/the-effect-of-interprofessional-team-based-learning-among-nursing-students-a-quasi-experimental-study
#3
Arkers Kwan Ching Wong, Frances Kam Yuet Wong, Lap Ki Chan, Namkiu Chan, Fraide A Ganotice, Jacqueline Ho
BACKGROUND: Although interprofessional education has received attention in recent years as a means of providing opportunities for health-care professionals to learn with, from and about other disciplines and enhance the quality of patient care, evidence of its effectiveness is limited. Interprofessional team-based learning was introduced to make it possible for students in different healthcare disciplines to interact with each other, and to prepare them to function effectively within a team in their future career...
March 9, 2017: Nurse Education Today
https://www.readbyqxmd.com/read/28339479/mouse-newborn-cells-allow-highly-productive-mouse-cytomegalovirus-replication-constituting-a-novel-convenient-primary-cell-culture-system
#4
Vu Thuy Khanh Le-Trilling, Mirko Trilling
Mammalian cell culture is indispensable for most aspects of current biomedical research. Immortalized cell lines are very convenient, but transforming principles (e.g. oncogenic viruses or their oncogenes) can heavily influence the experimental outcome. Primary cells do not share this apparent disadvantage but are more laborious to generate. Certain viruses (e.g. mouse cytomegalovirus) do not replicate efficiently in most transformed cell lines. In the past, such viruses have been routinely propagated on primary mouse embryonic fibroblasts (MEF) established around day 17 (d17) of gestation...
2017: PloS One
https://www.readbyqxmd.com/read/28338951/measuring-transitions-in-sexual-risk-among-men-who-have-sex-with-men-the-novel-use-of-latent-class-and-latent-transition-analysis-in-hiv-sentinel-surveillance
#5
Anna L Wilkinson, Carol El-Hayek, Christopher K Fairley, Norm Roth, B K Tee, Emma McBryde, Margaret Hellard, Mark Stoové
New combination human acquired deficiency (HIV) prevention strategies that include biomedical and primary prevention approaches add complexity to the task of measuring sexual risk. Latent transition models are beneficial for understanding complex phenomena; therefore, we trialed the application of latent class and latent transition models to HIV surveillance data. Our aims were to identify sexual risk states and model individuals' transitions between states. A total of 4,685 HIV-negative men who have sex with men (MSM) completed behavioral questionnaires alongside tests for HIV and sexually transmissible infections at one of 2 Melbourne, Victoria, Australia, general practices (2007-2013)...
March 10, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/28337874/the-biomedical-aspects-of-oral-mucosal-epithelial-cell-culture-in-mammals
#6
A Bryja, M Dyszkiewicz-Konwińska, J Budna, W Kranc, A Chachuła, S Borys, S Ciesiółka, J Sokalski, M Prylinski, D Bukowska, P Antosik, M Bruska, M Nowicki, M Zabel, B Kempisty
In recent years, there has been a growing interest in epithelial cell tissue culture, particularly oral mucosa and its application utilizing in vitro cell culture in medicine. This involves tests using animal models to better understand oral mucosa function, and the differences in its construction in various animal models. The use of buccal pouch mucosal cell culture provides insight into the processes of trans mucosal transport and regeneration of the oral epithelium. The processes associated with epithelium regeneration is the base for stem cell research and/or oral cancer investigation...
January 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28337765/quality-control-of-apheresis-platelets-a-multicentre-study-to-evaluate-factors-that-can-influence-ph-measurement
#7
M Germain, Y Grégoire, R R Vassallo, J P Acker, R Cardigan, D de Korte, D O Irving, S Bégué
BACKGROUND AND OBJECTIVES: Blood operators routinely monitor the pH of apheresis platelets as a marker of the so-called storage lesion, which can result from manufacturing problems. It is also suspected that some donor characteristics can increase the risk of poor platelet storage. To explore this hypothesis, we analysed a large, multinational data set of quality control (QC) pH test results on apheresis platelets. MATERIALS AND METHODS: For the period between September 2011 and August 2014, seven blood operators in Canada, the USA, the Netherlands, the United Kingdom, France and Australia provided pH QC test results and donor characteristics on a total of 21,671 apheresis platelets...
March 23, 2017: Vox Sanguinis
https://www.readbyqxmd.com/read/28336852/amorphous-silica-particles-relevant-in-food-industry-influence-cellular-growth-and-associated-signaling-pathways-in-human-gastric-carcinoma-cells
#8
Anja Wittig, Helge Gehrke, Giorgia Del Favero, Eva-Maria Fritz, Marco Al-Rawi, Silvia Diabaté, Carsten Weiss, Haider Sami, Manfred Ogris, Doris Marko
Nanostructured silica particles are commonly used in biomedical and biotechnical fields, as well as, in cosmetics and food industry. Thus, their environmental and health impacts are of great interest and effects after oral uptake are only rarely investigated. In the present study, the toxicological effects of commercially available nano-scaled silica with a nominal primary diameter of 12 nm were investigated on the human gastric carcinoma cell line GXF251L. Besides the analysis of cytotoxic and proliferative effects and the comparison with effects of particles with a nominal primary diameter of 200 nm, emphasis was also given to their influence on the cellular epidermal growth factor receptor (EGFR) and mitogen-activated protein kinases (MAPK) signaling pathways-both of them deeply involved in the regulation of cellular processes like cell cycle progression, differentiation or proliferation...
January 13, 2017: Nanomaterials
https://www.readbyqxmd.com/read/28334019/cell-survival-and-differentiation-with-nanocrystalline-glass-like-carbon-using-substantia-nigra-dopaminergic-cells-derived-from-transgenic-mouse-embryos
#9
Noela Rodriguez-Losada, Pablo Romero, Guillermo Estivill-Torrús, Roberto Guzmán de Villoria, Jose A Aguirre
Regenerative medicine requires, in many cases, physical supports to facilitate appropriate cellular architecture, cell polarization and the improvement of the correct differentiation processes of embryonic stem cells, induced pluripotent cells or adult cells. Because the interest in carbon nanomaterials has grown within the last decade in light of a wide variety of applications, the aim of this study was to test and evaluate the suitability and cytocompatibility of a particular nanometer-thin nanocrystalline glass-like carbon film (NGLC) composed of curved graphene flakes joined by an amorphous carbon matrix...
2017: PloS One
https://www.readbyqxmd.com/read/28333923/interdisciplinary-approach-at-the-primary-healthcare-level-for-bolivian-immigrants-with-chagas-disease-in-the-city-of-s%C3%A3-o-paulo
#10
Maria Aparecida Shikanai Yasuda, Camila Gonçalves Sátolo, Noemia Barbosa Carvalho, Magda Maya Atala, Rosario Quiroga Ferrufino, Ruth Moreira Leite, Célia Regina Furucho, Expedito Luna, Rubens Antonio Silva, Marcia Hage, Caroline Medeji Ramos de Oliveira, Felipe Delatorre Busser, Vera Lucia Teixeira de Freitas, Dalva Marli Valerio Wanderley, Luzia Martinelli, Sonia Regina Almeida, Pedro Albajar Viñas, Nivaldo Carneiro
BACKGROUND/METHODS: In a pioneering cross-sectional study among Bolivian immigrants in the city of São Paulo, Brazil, the epidemiological profile, clinical manifestations and morbidity of Chagas disease were described. The feasibility of the management of Chagas disease at primary healthcare clinics using a biomedical and psychosocial interdisciplinary approach was also tested. Previously, a Trypanosoma cruzi (T. cruzi) infection rate of 4.4% among 633 immigrants was reported. The samples were screened using two commercial enzyme-linked immunoassay (ELISA) tests generated with epimastigote antigens, and those with discrepant or seropositive results were analyzed by confirmatory tests: indirect immunofluorescence (IFI), TESA-blot and a commercial recombinant ELISA...
March 23, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28333321/preconception-and-early-pregnancy-maternal-haemodynamic-changes-in-healthy-women-in-relation-to-pregnancy-viability
#11
F L Foo, A Collins, C M McEniery, P R Bennett, I B Wilkinson, C C Lees
STUDY QUESTION: Are there differences in preconception cardiovascular function between women who have a viable pregnancy and those who have a first trimester miscarriage? SUMMARY ANSWER: Preconception cardiovascular function of central haemodynamics and arterial function are similar between women who have a viable pregnancy and those who have a first trimester miscarriage. WHAT IS KNOWN ALREADY: Miscarriages have been associated with increased long-term cardiovascular disease risk, and arterial and cardiovascular dysfunction has been hypothesised as the common link...
March 16, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28333195/genome-wide-genetic-analyses-highlight-mitogen-activated-protein-kinase-mapk-signaling-in-the-pathogenesis-of-endometriosis
#12
Outi Uimari, Nilufer Rahmioglu, Dale R Nyholt, Katy Vincent, Stacey A Missmer, Christian Becker, Andrew P Morris, Grant W Montgomery, Krina T Zondervan
STUDY QUESTION: Do genome-wide association study (GWAS) data for endometriosis provide insight into novel biological pathways associated with its pathogenesis? SUMMARY ANSWER: GWAS analysis uncovered multiple pathways that are statistically enriched for genetic association signals, analysis of Stage A disease highlighted a novel variant in MAP3K4, while top pathways significantly associated with all endometriosis and Stage A disease included several mitogen-activated protein kinase (MAPK)-related pathways...
February 9, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28332214/serum-eye-drops-a-survey-of-international-production-methods
#13
D C Marks, P F van der Meer
BACKGROUND: Serum eye drops (SEDs) are used to treat dry eye syndrome and non-healing corneal lesions when other treatments fail. Despite many clinical studies demonstrating the efficacy of both autologous and allogeneic SEDs, there is no internationally harmonized method for producing SEDs. MATERIALS AND METHODS: A 40-question survey requesting information regarding donor selection, blood collection and processing, infectious disease screening, shelf life and regulatory requirements for the production of autologous and allogeneic SEDs was developed by the Biomedical Excellence for Safer Transfusion Collaborative...
March 23, 2017: Vox Sanguinis
https://www.readbyqxmd.com/read/28330491/orchestrating-differential-data-access-for-translational-research-a-pilot-implementation
#14
Marco Brandizi, Olga Melnichuk, Raffael Bild, Florian Kohlmayer, Benedicto Rodriguez-Castro, Helmut Spengler, Klaus A Kuhn, Wolfgang Kuchinke, Christian Ohmann, Timo Mustonen, Mikael Linden, Tommi Nyrönen, Ilkka Lappalainen, Alvis Brazma, Ugis Sarkans
BACKGROUND: Translational researchers need robust IT solutions to access a range of data types, varying from public data sets to pseudonymised patient information with restricted access, provided on a case by case basis. The reason for this complication is that managing access policies to sensitive human data must consider issues of data confidentiality, identifiability, extent of consent, and data usage agreements. All these ethical, social and legal aspects must be incorporated into a differential management of restricted access to sensitive data...
March 23, 2017: BMC Medical Informatics and Decision Making
https://www.readbyqxmd.com/read/28330235/antimicrobial-activities-of-a-promising-glycolipid-biosurfactant-from-a-novel-marine-staphylococcus-saprophyticus-sbps-15
#15
P Mani, G Dineshkumar, T Jayaseelan, K Deepalakshmi, C Ganesh Kumar, S Senthil Balan
Biosurfactants have gained a renewed interest in the recent years for their commercial application in diverse research areas. Recent evidences suggest that the antimicrobial activities exhibited by biosurfactants make them promising molecules for the application in the field of therapeutics. Marine microbes are well known for their unique metabolic and functional properties; however, few reports are available till date regarding their biosurfactant production and antimicrobial potential. In an ongoing survey for bioactive microbial metabolites from microbes isolated from diverse ecological niches, a marine Staphylococcus saprophyticus SBPS 15 isolated from the petroleum hydrocarbon contaminated coastal site, Puducherry, India, was identified as a promising biosurfactant producer based on multiple screening methods...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28329722/antibacterial-properties-of-amino-acid-functionalized-silver-nanoparticles-decorated-on-graphene-oxide-sheets
#16
Kumudini Chandraker, Rekha Nagwanshi, S K Jadhav, Kallol K Ghosh, Manmohan L Satnami
Graphene oxide (GO) sheets decorated with amino acid L-cysteine (L-cys) functionalized silver nanoparticles (GO-L-cys-Ag) was synthesized by AgNO3, trisodium citrate, and NaBH4. GO-L-cys-Ag nanocomposite was characterized by transmission electron microscopy (TEM), Fourier transform infrared (FTIR) spectra, ultraviolet-visible (UV-vis) absorption spectra, which demonstrated that a diameter of L-cys-AgNPs compactly deposited on GO. Antibacterial activity tests of GO-L-cys-Ag nanocomposite were carried out using Escherichia coli MTCC 1687 and Staphylococcus aureus MTCC 3160 as model strains of Gram-negative and Gram-positive bacteria, respectively...
March 16, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28328885/introducing-therioepistemology-the-study-of-how-knowledge-is-gained-from-animal-research
#17
REVIEW
Joseph P Garner, Brianna N Gaskill, Elin M Weber, Jamie Ahloy-Dallaire, Kathleen R Pritchett-Corning
This focus issue of Lab Animal coincides with a tipping point in biomedical research. For the first time, the scale of the reproducibility and translatability crisis is widely understood beyond the small cadre of researchers who have been studying it and the pharmaceutical and biotech companies who have been living it. Here we argue that an emerging literature, including the papers in this focus issue, has begun to congeal around a set of recurring themes, which themselves represent a paradigm shift. This paradigm shift can be characterized at the micro level as a shift from asking "what have we controlled for in this model?" to asking "what have we chosen to ignore in this model, and at what cost?" At the macro level, it is a shift from viewing animals as tools (the furry test tube), to viewing them as patients in an equivalent human medical study...
March 22, 2017: Lab Animal
https://www.readbyqxmd.com/read/28325319/bacterial-cellulose-zinc-oxide-nanocomposites-as-a-novel-dressing-system-for-burn-wounds
#18
Ayesha Khalid, Romana Khan, Mazhar Ul-Islam, Taous Khan, Fazli Wahid
Bacterial cellulose possesses physical and mechanical properties of an ideal wound dressing material but lack of antimicrobial activity limits its biomedical applications. Therefore, in current study, the inherent wound healing characteristics of bacterial cellulose and antimicrobial properties of zinc oxide nanoparticles were combined. The reinforcement (impregnation) of zinc oxide nanoparticles into bacterial cellulose sheets was confirmed through various characterization techniques. The antimicrobial capacity of bacterial cellulose-zinc oxide nanocomposites was tested against common burn pathogens...
May 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28325023/an-affordable-cuff-less-blood-pressure-estimation-solution
#19
Monika Jain, Niranjan Kumar, Sujay Deb
This paper presents a cuff-less hypertension pre-screening device that non-invasively monitors the Blood Pressure (BP) and Heart Rate (HR) continuously. The proposed device simultaneously records two clinically significant and highly correlated biomedical signals, viz., Electrocardiogram (ECG) and Photoplethysmogram (PPG). The device provides a common data acquisition platform that can interface with PC/laptop, Smart phone/tablet and Raspberry-pi etc. The hardware stores and processes the recorded ECG and PPG in order to extract the real-time BP and HR using kernel regression approach...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28324926/statistical-approach-for-lightweight-detection-of-anomalies-in-ecg
#20
Ihor Vasyltsov, Changgyu Bak, Jiseung Jeong
In this paper the application of statistical approach for anomaly detection in a wearable ECG monitor has been considered. The method is based on the usage of the pre-defined expected behavior of the monitored biomedical signal and its on-line comparison with real-time measurements. Such comparison can be implemented based on the statistical model of ECG signal. To test the accuracy of the proposed method a ProSim 8 simulator was used to generate ECG signals. Our experiments showed that critical anomalies in ECG, such as Cardiac Failure, different types of Arrhythmia, and ST-segment deviations can be detected with high precision (96~100%), while false positive rate over typical NSR signal is low (<;4%)...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
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