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https://www.readbyqxmd.com/read/29453558/inorganic-nanoparticles-in-diagnosis-and-treatment-of-breast-cancer
#1
REVIEW
Cristina Núñez, Sergio Vázquez Estévez, María Del Pilar Chantada
Nanoparticles are being actively developed for biomolecular profiling of cancer biomarkers, tumor imaging in vivo, and targeted drug delivery. These nanotechnology-based techniques can be applied widely in the management of different malignant diseases, such as breast cancer. Although the number of different types of nanoparticles is increasing rapidly, most can be classified into two major types: particles that contain organic molecules as a major building material (such as dendrimers, micelles, liposomes and carbon nanotubes, and other polymers); and those that use inorganic elements, usually metals, as a core...
February 16, 2018: Journal of Biological Inorganic Chemistry: JBIC
https://www.readbyqxmd.com/read/29453452/systematic-and-stochastic-influences-on-the-performance-of-the-minion-nanopore-sequencer-across-a-range-of-nucleotide-bias
#2
Raga Krishnakumar, Anupama Sinha, Sara W Bird, Harikrishnan Jayamohan, Harrison S Edwards, Joseph S Schoeniger, Kamlesh D Patel, Steven S Branda, Michael S Bartsch
Emerging sequencing technologies are allowing us to characterize environmental, clinical and laboratory samples with increasing speed and detail, including real-time analysis and interpretation of data. One example of this is being able to rapidly and accurately detect a wide range of pathogenic organisms, both in the clinic and the field. Genomes can have radically different GC content however, such that accurate sequence analysis can be challenging depending upon the technology used. Here, we have characterized the performance of the Oxford MinION nanopore sequencer for detection and evaluation of organisms with a range of genomic nucleotide bias...
February 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29452957/a-systematic-review-of-the-efficacy-and-limitations-of-venous-intervention-in-stasis-ulceration
#3
REVIEW
Myriam L Montminy, Arjun Jayaraj, Seshadri Raju
BACKGROUND: Surgical techniques to address various components of chronic venous disease are rapidly evolving. Their efficacy and generally good results in treating superficial venous reflux (SVR) have been documented and compared in patients presenting with pain and swelling. A growing amount of literature is now available suggesting their efficacy in patients with venous leg ulcer (VLU). This review attempts to summarize the efficacy and limitations of commonly used venous interventions in the treatment of SVR and incompetent perforator veins (IPVs) in patients with VLU...
February 13, 2018: Journal of Vascular Surgery. Venous and Lymphatic Disorders
https://www.readbyqxmd.com/read/29452047/lessons-learned-from-ebola-vaccine-r-d-during-a-public-health-emergency
#4
Marie-Paule Kieny
In spite of a complete lack of Research and Development (R&D) preparedness, the 2013-2016 West-Africa Ebola experience demonstrated that it is possible to compress R&D timelines to less than a single year, from a more usual decade or longer. This is mostly to be credited to an unprecedented collaborative effort building on the availability of a small number of candidate diagnostic tests, drugs and vaccines that could be moved rapidly into the clinical phase evaluation. The World Health Organization (WHO) led international consultations and activities - including the organization of a successful Ebola vaccine efficacy trial in Guinea - as a contribution to the unprecedented global efforts to control the Ebola epidemic...
February 16, 2018: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/29451781/multiple-snps-detection-based-on-lateral-flow-assay-for-phenylketonuria-diagnostic
#5
Xiaonan Liu, Chao Zhang, Kewu Liu, Han Wang, Chaoxia Lu, Hang Li, Kai Hua, Juanli Zhu, Wenli Hui, Yali Cui, Xue Zhang
Single nucleotide polymorphisms (SNPs) are closely related to genetic diseases, but current SNP detection methods, such as DNA microarrays that include tedious procedures and expensive, sophisticated instruments, are unable to perform rapid SNPs detection in clinical practice, especially for those multiple SNPs related to genetic diseases. In this study, we report a sensitive, low cost, and easy-to-use point-of-care testing (POCT) system formed by combining amplification refractory mutation system (ARMS) polymerase chain reaction with gold magnetic nanoparticles (GMNPs) and lateral flow assay (LFA) noted as the ARMS-LFA system, which allow us to use a uniform condition for multiple SNPs detection simultaneously...
February 16, 2018: Analytical Chemistry
https://www.readbyqxmd.com/read/29451745/detection-of-ros1-positive-non-small-cell-lung-cancer-on-cytological-specimens-using-immunocytochemistry
#6
Tatjana Vlajnic, Spasenija Savic, Audrey Barascud, Betty Baschiera, Michel Bihl, Bruno Grilli, Michelle Herzog, Julien Rebetez, Lukas Bubendorf
BACKGROUND: Rearrangements of the ROS1 oncogene are found in 1% to 2% of non-small cell lung cancers (NSCLC) and are regarded as mutually exclusive oncogenic driver mutations. Since the approval of targeted therapy for ROS1-positive NSCLC, ROS1 testing has become a part of the diagnostic routine. Fluorescence in situ hybridization (FISH), optionally selected for by immunohistochemistry on histological material, is a common practice for the detection of ROS1 rearrangements. However, NSCLC often is diagnosed by cytology alone, requiring predictive marker testing on cytological specimens...
February 16, 2018: Cancer Cytopathology
https://www.readbyqxmd.com/read/29451114/molecular-tools-to-study-preharvest-food-safety-challenges
#7
Deepak Kumar, Siddhartha Thakur
Preharvest food safety research and activities have advanced over time with the recognition of the importance and complicated nature of the preharvest phase of food production. In developed nations, implementation of preharvest food safety procedures along with strict monitoring and containment at various postharvest stages such as slaughter, processing, storage, and distribution have remarkably reduced the burden of foodborne pathogens in humans. Early detection and adequate surveillance of pathogens at the preharvest stage is of the utmost importance to ensure a safe meat supply...
February 2018: Microbiology Spectrum
https://www.readbyqxmd.com/read/29450945/clinical-application-of-3d-technology-for-tooth-autotransplantation-a-case-report
#8
Keunhee Kim, Hee-Seung Choi, Nan-Sim Pang
This report presents two cases of tooth autotransplantation using cone-beam computed tomography (CBCT), the three-dimensional (3D) simulation dental planning software and a computer-aided rapid prototyping (CARP) model. Two hopeless teeth of adult patients were replaced as their third molar teeth. Before deciding the autotransplantation, diagnostic CBCT images were acquired and imported to SimPlant software. The SimPlant dental program was used for surgical simulation prior to autotransplantation, which created 3D images of the available donor teeth and recipient site tooth and superimposed the images to display their morphological similarity...
February 16, 2018: Australian Endodontic Journal: the Journal of the Australian Society of Endodontology Inc
https://www.readbyqxmd.com/read/29450741/utility-of-cardiac-computed-tomography-scanning-in-the-diagnosis-and-pre-operative-evaluation-of-patients-with-infective-endocarditis
#9
Jason R Sims, Nandan S Anavekar, Krishnaswamy Chandrasekaran, James M Steckelberg, Walter R Wilson, Bernard J Gersh, Larry M Baddour, Daniel C DeSimone
Transesophageal echocardiography (TEE) is the gold standard imaging study used in the diagnosis of infective endocarditis (IE). Computed tomography angiography (CTA) has undergone rapid advancement as a cardiac imaging technique and has previously shown promise in small non-randomized studies for evaluation of IE. We hypothesized that cardiac CTA would perform similarly to TEE in the detection of endocarditic lesions and that there would be no difference in clinical outcomes whether the coronary arteries were evaluated by CTA or invasive coronary angiography (ICA)...
February 15, 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/29450652/enhanced-tumor-diagnostic-and-therapeutic-effect-of-mesoporous-silica-nanoparticle-mediated-pre-targeted-strategy
#10
Gaochao Lv, Ke Li, Ling Qiu, Ying Peng, Xueyu Zhao, Xi Li, Qingzhu Liu, Shanshan Wang, Jianguo Lin
PURPOSE: Improving the targeting efficiency of imaging agents or anticancer drugs has become essential in the current primary mission to enhance the diagnostic or therapeutic effects. To improve the tumor diagnosis and therapy effect, a promising drug-delivery and targeting strategy was established based on the bioorthogonal chemistry. METHOD: The delivery system was composed of the pre-targeting carrier Biotin-MSNs-DBCO nanoparticles and the azido cargoes. The fluorescence probe 1-(3-azidopropyl) fluorescein (FITC-N 3 ) and ruthenium N-heterocyclic carbene complex N 3 -S-S-NHC-Ru were synthesized and served as the tumor imaging and therapy probes, respectively...
February 14, 2018: Pharmaceutical Research
https://www.readbyqxmd.com/read/29449511/crispr-cas12a-target-binding-unleashes-indiscriminate-single-stranded-dnase-activity
#11
Janice S Chen, Enbo Ma, Lucas B Harrington, Maria Da Costa, Xinran Tian, Joel M Palefsky, Jennifer A Doudna
CRISPR-Cas12a (Cpf1) proteins are RNA-guided enzymes that bind and cut DNA as components of bacterial adaptive immune systems. Like CRISPR-Cas9, Cas12a has been harnessed for genome editing based on its ability to generate targeted, double-stranded DNA (dsDNA) breaks. Here we show that RNA-guided DNA binding unleashes indiscriminate single-stranded DNA (ssDNA) cleavage activity by Cas12a that completely degrades ssDNA molecules. We find that target-activated, non-specific ssDNase cleavage is also a property of other type V CRISPR-Cas12 enzymes...
February 15, 2018: Science
https://www.readbyqxmd.com/read/29449508/multiplexed-and-portable-nucleic-acid-detection-platform-with-cas13-cas12a-and-csm6
#12
Jonathan S Gootenberg, Omar O Abudayyeh, Max J Kellner, Julia Joung, James J Collins, Feng Zhang
Rapid detection of nucleic acids is integral for clinical diagnostics and biotechnological applications. We recently developed a platform termed SHERLOCK (<u>S</u>pecific<u>H</u>igh Sensitivity<u>E</u>nzymatic<u>R</u>eporter Un<u>LOCK</u>ing) that combines isothermal pre-amplification with Cas13 to detect single molecules of RNA or DNA. Through characterization of CRISPR enzymology and application development, we report here four advances integrated into SHERLOCKv2: 1) 4-channel single reaction multiplexing using orthogonal CRISPR enzymes; 2) quantitative measurement of input down to 2 aM; 3) 3...
February 15, 2018: Science
https://www.readbyqxmd.com/read/29449194/prostaglandin-d2-receptor-dp1-antibodies-predict-vaccine-induced-and-spontaneous-narcolepsy-type-1-large-scale-study-of-antibody-profiling
#13
Helle Sadam, Arno Pihlak, Anri Kivil, Susan Pihelgas, Mariliis Jaago, Priit Adler, Jaak Vilo, Olli Vapalahti, Toomas Neuman, Dan Lindholm, Markku Partinen, Antti Vaheri, Kaia Palm
BACKGROUND: Neuropathological findings support an autoimmune etiology as an underlying factor for loss of orexin-producing neurons in spontaneous narcolepsy type 1 (narcolepsy with cataplexy; sNT1) as well as in Pandemrix influenza vaccine-induced narcolepsy type 1 (Pdmx-NT1). The precise molecular target or antigens for the immune response have, however, remained elusive. METHODS: Here we have performed a comprehensive antigenic repertoire analysis of sera using the next-generation phage display method - mimotope variation analysis (MVA)...
February 2, 2018: EBioMedicine
https://www.readbyqxmd.com/read/29448894/noninvasive-optical-assessment-of-implanted-engineered-tissues-correlates-with-cytokine-secretion
#14
Sakib F Elahi, Seung Yup Lee, William R Lloyd, Leng-Chun Chen, Shiuhyang Kuo, Ying Zhou, Hyungjin Myra Kim, Robert Kennedy, Cynthia Marcelo, Stephen E Feinberg, Mary-Ann Mycek
Fluorescence lifetime sensing has been shown to noninvasively characterize the pre-implantation health and viability of engineered tissue constructs. However, current practices to monitor post-implantation construct integration are either qualitative (visual assessment) or destructive (tissue histology). We employed label-free fluorescence lifetime spectroscopy for quantitative, noninvasive optical assessment of engineered tissue constructs that were implanted in a murine model. The portable system was designed to be suitable for intravital measurements and included a handheld probe to precisely and rapidly acquire data at multiple sites per construct...
February 16, 2018: Tissue Engineering. Part C, Methods
https://www.readbyqxmd.com/read/29447912/immunogold-agglutination-assay-for-direct-detection-of-hpv-16-e6-and-l1-proteins-from-clinical-specimens
#15
Parvapan Bhattarakosol, Kamolwan Plaignam, Amornpun Sereemaspun
HPV-16 infection is the most common cause of cervical cancer. As HPV-16 transforms the cell, E6 oncoprotein is over-expressed. Therefore, molecular detection of HPV-16 E6 mRNA is now being used for diagnosis and prediction of cancer development. Besides detecting E6 mRNA, a rapid lateral flow detecting the E6 protein using enzyme immunoassay is also now on market with a sensitivity of 53.5% for cervical intraepithelial neoplasia (CIN)-3 or more severe (CIN-3 + ). Here, an immunogold-agglutination assay was developed to detect not only HPV-16 E6 protein but also L1, a major capsid protein found in the productive stage of the virus...
February 12, 2018: Journal of Virological Methods
https://www.readbyqxmd.com/read/29447380/sirtuins-in-gamete-biology-and-reproductive-physiology-emerging-roles-and-therapeutic-potential-in-female-and-male-infertility
#16
Carla Tatone, Giovanna Di Emidio, Arcangelo Barbonetti, Gaspare Carta, Alberto M Luciano, Stefano Falone, Fernanda Amicarelli
BACKGROUND: Sirtuins (SIRT1-7) are a family of NAD+-dependent deacetylases that catalyze post-translational modifications of proteins. Together, they respond to metabolic challenges, inflammatory signals or hypoxic/oxidative stress, and are associated with aging and longevity. The role of Sirtuins in the regulation of fertility emerged in 2003 when a defective reproductive phenotype was observed in SIRT1-null mice. Although studies on Sirtuins in reproductive biology have been increasing in the last years, a recent comprehensive update on this issue is still lacking...
February 13, 2018: Human Reproduction Update
https://www.readbyqxmd.com/read/29447319/squamous-cell-carcinoma-of-the-gingiva-mimicking-periodontal-disease-a-diagnostic-challenge-and-therapeutic-dilemma
#17
Michael M Bornstein, Claude Andreoni, Thomas Meier, Yiu Yan Leung
A case of squamous cell carcinoma of the gingiva (GSCC) in the left anterior maxilla in a 64-year-old woman that was treated for almost 5 years as suspected periodontal lesion prior to establishing the final diagnosis of oral cancer is presented in this case report. GSCCs have a variable clinical appearance, ranging from an exophytic mass to ulcerative lesions. They have been reported to pose a diagnostic challenge and are not infrequently initially misdiagnosed as periodontal disease. A delay in diagnosis and extraction of teeth in the vicinity of GSCCs has been demonstrated to increase the risk for lymph node metastasis and thus result in a lower 5-year survival rate...
March 2018: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/29447231/preparedness-of-lower-level-health-facilities-and-the-associated-factors-for-the-outpatient-primary-care-of-hypertension-evidence-from-tanzanian-national-survey
#18
Deogratius Bintabara, Bonaventura C T Mpondo
INTRODUCTION: Sub-Saharan Africa is experiencing a rapid rise in the burden of non-communicable diseases in both urban and rural areas. Data on health system preparedness to manage hypertension and other non-communicable diseases remains scarce. This study aimed to assess the preparedness of lower-level health facilities for outpatient primary care of hypertension in Tanzania. METHODS: This study used data from the 2014-2015 Tanzania Service Provision Assessment survey...
2018: PloS One
https://www.readbyqxmd.com/read/29446678/interrater-agreement-and-diagnostic-accuracy-of-a-novel-computer-aided-detection-process-for-the-detection-and-prevention-of-retained-surgical-instruments
#19
Theodore C Marentis, Matthew S Davenport, Jonathan R Dillman, Ramon Sanchez, Aine M Kelly, Paul Cronin, Mariana R DeFreitas, Lubomir Hadjiiski, Heang-Ping Chan
OBJECTIVE: The purpose of this study is to evaluate the diagnostic accuracy of a process incorporating computer-aided detection (CAD) for the detection and prevention of retained surgical instruments using a novel nondeformable radiopaque μTag. MATERIALS AND METHODS: A high-specificity CAD system was developed iteratively from a training set (n = 540 radiographs) and a validation set (n = 560 radiographs). A novel test set composed of 700 thoracoabdominal radiographs (410 with a randomly placed μTag and 290 without a μTag) was obtained from 10 cadavers embedded with confounding iatrogenic objects...
February 15, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29445800/acoustic-separation-in-plastic-microfluidics-for-rapid-detection-of-bacteria-in-blood-using-engineered-bacteriophage
#20
P Dow, K Kotz, S Gruszka, J Holder, J Fiering
A more effective treatment of bacteremia requires a diagnostic platform that is both sensitive, accurate and rapid. Currently, clinical laboratory techniques require growth of bacteria prior to diagnosis, take days to complete, and leave empiric therapy and broad spectrum antibiotics as the only option at the onset of treatment. In order to bypass this growth requirement, we engineered a system that purifies bacteria from blood to improve performance in a bacteriophage-based luminescence assay. To perform the purification, we used acoustophoresis in plastic microfluidic chips, enabling future development into a low cost point-of-care system...
February 15, 2018: Lab on a Chip
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