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https://www.readbyqxmd.com/read/28922607/antdas-automatic-data-analysis-strategy-for-uplc-qtof-based-nontargeted-metabolic-profiling-analysis
#1
Hai-Yan Fu, Xiao-Ming Guo, Yue-Ming Zhang, Jing-Jing Song, Qing-Xia Zheng, Ping-Ping Liu, Peng Lu, Qian-Si Chen, Yong-Jie Yu, Yuanbin She
High-quality data analysis methodology remains a bottleneck for metabolic profiling analysis based on ultra-performance liquid chromatography-quadrupole time-of-flight mass spectrometry. The present work aims to address this problem by proposing a novel data analysis strategy wherein (1) chromatographic peaks in the UPLC-QTOF dataset are automatically extracted by using an advanced multiscale Gaussian smoothing-based peak extraction strategy. (2) A peak annotation stage is used to cluster fragment ions that belong to the same compound...
September 18, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28922552/an-individualized-gene-expression-signature-for-prediction-of-lung-adenocarcinoma-metastases
#2
Lishuang Qi, Tianhao Li, Gengen Shi, Jiasheng Wang, Xin Li, Sainan Zhang, Libin Chen, Yuan Qin, Yunyan Gu, Wenyuan Zhao, Zheng Guo
Our laboratory previously reported an individual-level signature consisting of nine gene pairs, named 9-GPS. This signature was developed by training on microarray expression data and validated using three independent integrated microarray data sets, with samples of stage I non-small cell lung cancer after complete surgical resection. In this study, we first validated the cross-platform robustness of 9-GPS by demonstrating that 9-GPS could significantly stratify the overall survival of 213 stage I lung adenocarcinoma (LUAD) patients detected with RNA-sequencing platform in The Cancer Genome Atlas (log-rank p = 0...
September 18, 2017: Molecular Oncology
https://www.readbyqxmd.com/read/28922376/news-trends-and-web-search-query-of-hiv-aids-in-hong-kong
#3
Alice P Y Chiu, Qianying Lin, Daihai He
BACKGROUND: The HIV epidemic in Hong Kong has worsened in recent years, with major contributions from high-risk subgroup of men who have sex with men (MSM). Internet use is prevalent among the majority of the local population, where they sought health information online. This study examines the impacts of HIV/AIDS and MSM news coverage on web search query in Hong Kong. METHODS: Relevant news coverage about HIV/AIDS and MSM from January 1st, 2004 to December 31st, 2014 was obtained from the WiseNews databse...
2017: PloS One
https://www.readbyqxmd.com/read/28922356/mathematical-modeling-and-quantitative-analysis-of-hiv-1-gag-trafficking-and-polymerization
#4
Yuewu Liu, Xiufen Zou
Gag, as the major structural protein of HIV-1, is necessary for the assembly of the HIV-1 sphere shell. An in-depth understanding of its trafficking and polymerization is important for gaining further insights into the mechanisms of HIV-1 replication and the design of antiviral drugs. We developed a mathematical model to simulate two biophysical processes, specifically Gag monomer and dimer transport in the cytoplasm and the polymerization of monomers to form a hexamer underneath the plasma membrane. Using experimental data, an optimization approach was utilized to identify the model parameters, and the identifiability and sensitivity of these parameters were then analyzed...
September 18, 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28922334/common-malignant-brain-tumors-can-18f-fdg-pet-ct-aid-in-differentiation
#5
Nilendu C Purandare, Ameya Puranik, Sneha Shah, Archi Agrawal, Tejpal Gupta, Aliasgar Moiyadi, Prakash Shetty, Epari Shridhar, Rakesh Jalali, Venkatesh Rangarajan
OBJECTIVES: The objectives of this study were to evalute the metabolic characteristics of common malignant space-occupying lesions (SOL) of the brain and to determine the utility of fluorine-18-fluorodeoxyglucose (F-FDG) PET/CT in differentiating between the common types of malignant brain SOL. PATIENTS AND METHODS: All patients with brain SOL who were referred for an F-FDG PET/CT scan by a multidisciplinary team were included in this retrospective study. The metabolic characteristics of the brain lesions in the form of maximum standardized uptake value (SUVmax) along with tumor-to-background activity ratios were determined and differences were compared using nonparametric statistical tests...
September 15, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28922302/resident-knowledge-surgical-skill-and-confidence-in-transobturator-vaginal-tape-placement-the-value-of-a-cadaver-laboratory
#6
Woojin Chong, Keith Downing, Ava Leegant, Erika Banks, Dmitry Fridman, Sherry Downie
OBJECTIVES: The objective of this study is to examine the effect of additional cadaver laboratory use in training obstetrics and gynecology (OBGYN) residents on transobturator vaginal tape (TOT) insertion. METHODS: Thirty-four OBGYN residents were randomized into 2 groups (group 1, control; group 2, intervention; 17 in each group). Before and after the interventions, written knowledge and confidence levels were assessed. Both groups received didactic lectures using a bony pelvis and an instructional video on TOT insertion; group 2 participated in a half day cadaver laboratory...
September 15, 2017: Female Pelvic Medicine & Reconstructive Surgery
https://www.readbyqxmd.com/read/28922246/immediate-dental-implant-placement-after-removal-of-complex-odontoma
#7
Fábio Roberto de Souza Batista, Victor Eduardo de Souza Batista, Aljomar José Vechiato-Filho, Victor Tieghi Neto, Jéssica Araújo Figueira, Fellippo Ramos Verri
The aim of the authors was to report a clinical case about immediate implant placement after the removal of complex odontoma. A 35-year-old female patient presented to private service complaining about absence of lower right first premolar. The computed tomographic showed radiopaque attenuation, surrounded by a narrow radiolucency in the area of dental absence, suggesting a mineralized lesion. The surgical removal of lesion was performed by intraoral access with general anesthesia and the implant of 3.75 × 10 mm (Neodent) was placed with the aid of a surgical guide, following the drill sequence established by the manufacturer...
September 15, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28922208/patient-centered-outcome-spectrum-an-evidence-based-framework-to-aid-in-shared-decision-making
#8
Angela M Ingraham, Suresh K Agarwal, Hee Soo Jung, Amy E Liepert, Ann P O'Rourke, John E Scarborough
OBJECTIVE: Our objective was to develop an alternate construct for reporting anticipated outcomes after emergency general surgery (EGS) that presents risk in terms of a composite measure. BACKGROUND: Currently available prediction tools generate risk outputs for discrete as opposed to composite measures of postoperative outcomes. A construct to synthesize multiple discrete estimates into a global understanding of a patient's likely postoperative health status is lacking and could augment shared decision-making conversations...
September 15, 2017: Annals of Surgery
https://www.readbyqxmd.com/read/28922180/qualitative-case-studies-of-professional-level-workers-with-traumatic-brain-injuries-a-contextual-approach-to-job-accommodation-and-retention
#9
Richard T Roessler, Phillip D Rumrill, Stuart P Rumrill, Deborah L Minton, Deborah J Hendricks, Elaine Sampson, Callista Stauffer, Marcia J Scherer, Amanda Nardone, Anne Leopold, Karen Jacobs, Eileen Elias
BACKGROUND: Traumatic brain injury (TBI) is a multi-systemic disability that causes a wide range of difficulties with personal and social functioning. METHODS: Four individuals with TBI participated in an evaluation of barriers to their continued employment following graduation from college. A trained interviewer completed the Work Experience Survey (WES) in teleconsultation sessions with each participant. RESULTS: Researchers applied a qualitative case study research design...
September 14, 2017: Work: a Journal of Prevention, Assessment, and Rehabilitation
https://www.readbyqxmd.com/read/28922111/optimization-of-the-working-conditions-for-magnetic-nanoparticle-enhanced-microwave-diagnostics-of-breast-cancer
#10
Gennaro Bellizzi, Gennaro G Bellizzi, Ovidio M Bucci, Lorenzo Crocco, Marko Helbig, Sebastian Ley, Juergen Sachs
Magnetic nanoparticle-aided microwave imaging is recently gaining an increasing interest as potential tool for breast cancer diagnostics. This is due to the peculiar features of magnetic nanoparticles, which are biocompatible, can be selectively targeted to the tumor and may change their microwave magnetic response when modulated by a polarizing magnetic field. This latter aspect is particularly appealing, as it enables the physical separation of the microwave signal due the malignancy, targeted by the nanoparticles, from that due to healthy tissue...
September 18, 2017: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28922075/factors-associated-with-optimal-antenatal-care-use-in-northern-region-ghana
#11
Abdulai Abubakari, Faith Agbozo, Gilbert Abotisem Abiiro
BACKGROUND: The aim of the present study was to investigate the factors associated with optimal use of antenatal care (ANC), that is, four or more times during pregnancy. METHODS: A facility-based cross-sectional survey was conducted between February and August 2014 among nursing mothers (n = 578) attending postnatal and child welfare clinics in three districts in Northern Ghana, representing urban, peri-urban and rural zones. The developed questionnaire aided the collection of information on maternal demographic characteristics, health status, household assets, and ANC attendance...
September 18, 2017: Women & Health
https://www.readbyqxmd.com/read/28922066/the-effect-of-lysozyme-on-reducing-biofilms-by-staphylococcus-aureus-pseudomonas-aeruginosa-and-gardnerella-vaginalis-an-in-vitro-examination
#12
Mirsada Hukić, Dzenita Seljmo, Amra Ramovic, Monia Avdić Ibrišimović, Serkan Dogan, Jasna Hukic, Elma Feric Bojic
Two basic questions about lysozyme activities on the selected microorganisms were investigated, namely whether lysozyme inhibits biofilm production and which concentrations of the enzyme have the ability to change the natural biofilm producing capacity of different strains of Staphylococcus aureus (methicillin sensitive and resistant), Streptococcus pyogenes, Pseudomonas aeruginosa, and Gardnerella vaginalis. The effect of lysozyme on biofilm formation capacities of 16 strains of selected microorganisms was investigated, whereby four testing replicates have been performed in vitro using the Test Tube method, and the potential of lysozyme to change biofilm forming capacities depending on its concentration, species, and strains of microorganisms is demonstrated...
September 18, 2017: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/28922047/long-term-average-speech-spectra-of-turkish
#13
Mustafa Yüksel, Bülent Gündüz
Long-term average speech spectra (LTASS) are a voice analysis method that is recommended to be used in various areas, such as hearing aid fittings, automatic speaker recognition and voice disorders. Evaluations of LTASS in different languages have been published; however, this analysis has not been conducted for the Turkish. Therefore, the first aim of this study was to conduct this analysis, generate normative values and compare the obtained LTASS curve for the Turkish with those obtained for other languages reported in the literature...
September 18, 2017: Logopedics, Phoniatrics, Vocology
https://www.readbyqxmd.com/read/28921985/computer-aided-identification-and-lead-optimization-of-dual-murine-double-minute-2-and-4-binders-structure-activity-relationship-studies-and-pharmacological-activity
#14
Mariateresa Giustiniano, Simona Daniele, Sveva Pelliccia, Valeria La Pietra, Deborah Pietrobono, Diego Brancaccio, Sandro Cosconati, Anna Messere, Stefano Giuntini, Linda Cerofolini, Marco Fragai, Claudio Luchinat, Sabrina Taliani, Giuseppe La Regina, Federico Da Settimo, Romano Silvestri, Claudia Martini, Ettore Novellino, Luciana Marinelli
The function of p53 protein, also known as "genome guardian", might be impaired by the over-expression of its primary cellular inhibitor, the murine double minute 2 protein (MDM2). However, the recent finding that MDM2-selective inhibitors induce high levels of its homolog MDM4, prompt us to identify, through a receptor-based virtual screening on an in house dababase, dual MDM2/MDM4 binders. Compound 1 turned out to possess an IC50 of 93.7 nM and of 4.6 nM on MDM2 and MDM4 respectively. A series of compounds were synthetized to optimize its activity on MDM2...
September 18, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28921957/silver-nanowires-for-reconfigurable-bloch-surface-waves
#15
Douguo Zhang, Ruxue Wang, Yifeng Xiang, Yan Kuai, Cuifang Kuang, Ramachandram Badugu, Yingke Xu, Pei Wang, Hai Ming, Xu Liu, Joseph R Lakowicz
The use of a single silver nanowire as a flexible coupler to transform a free space beam into a Bloch surface wave propagating on a dielectric multilayer is proposed. Based on Huygens 'Principle, when a Gaussian beam is focused onto a straight silver nanowire, a Bloch surface wave is generated and propagates perpendicular to the nanowire. By curving the silver nanowire, the surface wave can be focused. Furthermore, the spatial phase of the incident laser beam can be actively controlled with the aid of a spatial light modulator, resulting in the reconfigurable or dynamically controlled Bloch surface waves...
September 18, 2017: ACS Nano
https://www.readbyqxmd.com/read/28921764/acanthamoeba-granulomatous-amoebic-encephalitis-after-pediatric-hematopoietic-stem-cell-transplant
#16
Scott L Coven, Eunkyung Song, Sarah Steward, Christopher R Pierson, Jennifer R Cope, Ibne K Ali, Monica I Ardura, Mark W Hall, Melissa G Chung, Rajinder P S Bajwa
Acanthamoeba encephalitis is a rare, often fatal condition, particularly after HSCT, with 9 reported cases to date in the world literature. Our case was originally diagnosed with ALL at age 3 years, and after several relapses underwent HSCT at age 9 years. At 17 years of age, he was diagnosed with secondary AML for which he underwent a second allogeneic HSCT. He presented with acute-onset worsening neurological deficits on day +226 after the second transplant and a post-mortem diagnosis of Acanthamoeba encephalitis was established, with the aid of the CDC...
September 17, 2017: Pediatric Transplantation
https://www.readbyqxmd.com/read/28921641/pharmacokinetic-guided-dosing-of-new-oral-cancer-agents
#17
Catherine J Lucas, Jennifer H Martin
Generally, licensed drug-dosing recommendations for chemotherapy are based on results from clinical trials in which subjects are usually of relatively normal body size, middle-aged, and are relatively racially homogeneous, with minimal comorbidity and specific tumor characteristics. Very few nontrial patients meet these characteristics, resulting in clinical practice having to extrapolate dosing recommendations to the specific patient. There is insufficient research on the impact of obesity-associated physiological changes prevalent in patients with common cancers on standard pharmacokinetic and pharmacodynamic parameters...
October 2017: Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28921607/in-labor-or-in-limbo-the-experiences-of-women-undergoing-induction-of-labor-in-hospital-findings-of-a-qualitative-study
#18
Annabel Jay, Hilary Thomas, Fiona Brooks
BACKGROUND: Induction of labor currently accounts for around 25% of all births in high-resource countries, yet despite much research into medical aspects, little is known about how women experience this process. This study aimed to explore in depth the induction experience of primiparous women. METHODS: A qualitative study was undertaken, using a sample of 21 first-time mothers from a maternity unit in the south of England. Semi-structured interviews were conducted in women's homes between 3 and 6 weeks postnatally...
September 17, 2017: Birth
https://www.readbyqxmd.com/read/28921563/advanced-genomic-testing-may-aid-in-counseling-of-isolated-agenesis-of-the-corpus-callosum-on-prenatal-ultrasound
#19
M C de Wit, F Boekhorst, G M Mancini, L S Smit, I A L Groenenberg, J Dudink, F A T de Vries, A T J I Go, R J H Galjaard
OBJECTIVE: Isolated agenesis of the corpus callosum (ACC) on fetal ultrasound has a varied prognosis. Microarray and exome sequencing might aid in prenatal counseling. METHOD: This study includes 25 fetuses with apparently isolated complete ACC (cACC) on ultrasound. All cases were offered SNP array. Complementary exome sequencing (ES) was offered postnatally in selected cases. Clinical physical and neurodevelopmental follow-up was collected. RESULTS: Eighteen cases opted for SNP array testing, which detected a causal anomaly in 2/18(11...
September 16, 2017: Prenatal Diagnosis
https://www.readbyqxmd.com/read/28921242/use-of-computer-assisted-design-and-manufacturing-to-localize-dural-venous-sinuses-during-reconstructive-surgery-for-craniosynostosis
#20
Rajiv R Iyer, Adela Wu, Alexandra Macmillan, Leila Musavi, Regina Cho, Joseph Lopez, George I Jallo, Amir H Dorafshar, Edward S Ahn
OBJECTIVE: Cranial vault remodeling surgery for craniosynostosis carries the potential risk of dural venous sinus injury given the extensive bony exposure. Identification of the dural venous sinuses can be challenging in patients with craniosynostosis given the lack of accurate surface-localizing landmarks. Computer-aided design and manufacturing (CAD/CAM) has allowed surgeons to pre-operatively plan these complex procedures in an effort to increase reconstructive efficiency. An added benefit of this technology is the ability to intraoperatively map the dural venous sinuses based on pre-operative imaging...
September 18, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
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