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https://www.readbyqxmd.com/read/28081042/detection-of-hydrocodone-and-morphine-as-metabolites-in-oral-fluid-by-lc-ms-ms-in-patients-prescribed-codeine
#1
Robert E West, Maria G Guevara, Charles Mikel, Ruben Gamez
A retrospective analysis of oral fluid drug testing results using LC-MS/MS was performed to determine the prevalence rates in oral fluid for codeine (COD) and 3 COD metabolites-morphine (MOR), norhydrocodone (NHC), and hydrocodone (HCOD). Oral fluid samples were collected using Quantisal oral fluid collection device (Immunalysis Inc.) and submitted to Millennium Health, LLC for the routine drug analysis by LC-MS/MS. Consistent with previously published literature, COD was the primary analyte detected in oral fluid after the use of COD...
February 2017: Therapeutic Drug Monitoring
https://www.readbyqxmd.com/read/28079566/retesting-the-hypothesis-of-a-clinical-randomized-controlled-trial-in-a-simulation-environment-to-validate-anesthesia-simulation-in-error-research-the-vaser-study
#2
Alan F Merry, Jacqueline A Hannam, Craig S Webster, Kylie-Ellen Edwards, Jane Torrie, Chris Frampton, Daniel W Wheeler, Arun K Gupta, Ravi P Mahajan, Rachel Evley, Jennifer M Weller
BACKGROUND: Simulation has been used to investigate clinical questions in anesthesia, surgery, and related disciplines, but there are few data demonstrating that results apply to clinical settings. We asked "would results of a simulation-based study justify the same principal conclusions as those of a larger clinical study?" METHODS: We compared results from a randomized controlled trial in a simulated environment involving 80 cases at three centers with those from a randomized controlled trial in a clinical environment involving 1,075 cases...
January 12, 2017: Anesthesiology
https://www.readbyqxmd.com/read/28075581/antagonizing-nod2-signaling-with-conjugates-of-paclitaxel-and-muramyl-dipeptide-derivatives-sensitizes-paclitaxel-therapy-and-significantly-prevents-tumor-metastasis
#3
Yi Dong, Suhua Wang, Chunting Wang, Zihua Li, Yao Ma, Gang Liu
A non-cleavable paclitaxel (PTX) and N-acetyl-muramyl-L-alanyl-D-isoglutamine (MDP) derivative conjugate, 22 (DY-16-43), and its analogues were prepared and characterized as antagonists of NOD2 signaling. This conjugate enhanced the anti-tumor and anti-metastatic efficacy of PTX in Lewis lung carcinoma (LLC) tumor-bearing mice. This work first describes a molecular strategy that enables the sensitization of a chemotherapeutic response via antagonizing NOD2 inflammatory signaling and suggests NOD2 antagonist as potential adjunct in treating non-small-cell lung cancer (NSCLC)...
January 11, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28070999/inhibitory-effect-of-shenqi-fuzheng-injection-combined-with-docetaxel-on-lung-cancer-cells
#4
Bo-Yu Dong, Cheng Wang, Li Tan, Ning Tan, Meng-di Zhao, Yang Lu, Shou-Ying Du
This study investigated the anticancer effect of Shenqi Fuzheng (SQFZ) injection combined with docetaxel on lung cancer cell lines of A549 and Lewis lung cancer (LLC). SQFZ injection alone cannot inhibit the vitality of lung cancer cells, but the antitumor activity of SQFZ combined with docetaxel was significantly higher than that using docetaxel alone.
2017: Journal of Zhejiang University. Science. B
https://www.readbyqxmd.com/read/28068513/nrf2-dependent-induction-of-innate-host-defense-via-heme-oxygenase-1-inhibits-zika-virus-replication
#5
Hanxia Huang, Barry Falgout, Kazuyo Takeda, Kenneth M Yamada, Subhash Dhawan
We identified primary human monocyte-derived macrophages (MDM) as vulnerable target cells for Zika virus (ZIKV) infection. We demonstrate dramatic effects of hemin, the natural inducer of the heme catabolic enzyme heme oxygenase-1 (HO-1), in the reduction of ZIKV replication in vitro. Both LLC-MK2 monkey kidney cells and primary MDM exhibited hemin-induced HO-1 expression with major reductions of >90% in ZIKV replication, with little toxicity to infected cells. Silencing expression of HO-1 or its upstream regulatory gene, nuclear factor erythroid-related factor 2 (Nrf2), attenuated hemin-induced suppression of ZIKV infection, suggesting an important role for induction of these intracellular mediators in retarding ZIKV replication...
January 6, 2017: Virology
https://www.readbyqxmd.com/read/28066587/comparison-of-outcomes-of-tricuspid-annuloplasty-with-3d-rigid-versus-flexible-prosthetic-ring-for-functional-tricuspid-regurgitation-secondary-to-rheumatic-mitral-valve-disease
#6
Haiping Wang, Xiancheng Liu, Xin Wang, Zhenqian Lv, Xiaojun Liu, Ping Xu
BACKGROUND: Annuloplasty bands and rings are widely used for repairing functional tricuspid regurgitation (FTR). However, the question regarding which is the ideal annuloplasty device remains unclear. The aim of this study was to compare the efficacy and mid-term durability of tricuspid ring annuloplasty for FTR secondary to rheumatic mitral valve disease using flexible Cosgrove-Edwards band and the rigid Edwards MC3 ring (Edwards Lifesciences, LLC, Irvine, CA, USA). METHODS: We retrospectively collected the clinical data of those who underwent mitral valve replacement (MVR) in concomitant with tricuspid ring annuloplasty from 2009 to 2013...
November 2016: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28064082/novel-flavonol-analogues-as-potential-inhibitors-of-jmjd3-histone-demethylase-a-study-based-on-molecular-modelling
#7
Sanchari Basu Mallik, Aravinda Pai, Rekha R Shenoy, B S Jayashree
Epigenetic modulation of gene expression has drawn enormous attention among researchers globally in the present scenario. Since their discovery, Jmj-C histone demethylases were identified as useful markers in understanding the role of epigenetics in inflammatory conditions and in cancer as well. This has created arousal of interest in search of suitable candidates. Potential inhibitors from various other scaffolds such as hydroxyquinolines, hydroxamic acids and triazolopyridines have already been identified and reported...
December 13, 2016: Journal of Molecular Graphics & Modelling
https://www.readbyqxmd.com/read/28058021/prognostic-value-of-pre-treatment-f-18-fdg-pet-ct-in-patients-with-hepatocellular-carcinoma-undergoing-radioembolization
#8
Yazan Abuodeh, Arash O Naghavi, Kamran A Ahmed, Puja S Venkat, Youngchul Kim, Bela Kis, Junsung Choi, Benjamin Biebel, Jennifer Sweeney, Daniel A Anaya, Richard Kim, Mokenge Malafa, Jessica M Frakes, Sarah E Hoffe, Ghassan El-Haddad
AIM: To evaluate the value of pre-treatment 18F-FDG PET/CT in patients with HCC following liver radioembolization. METHODS: We identified 34 patients with HCC who underwent an FDG PET/CT scan prior to hepatic radioembolization at our institution between 2009 and 2013. Patients were seen in clinic one month after radioembolization and then at 2-3 mo intervals. We assessed the influence of FDG tumor uptake on outcomes including local liver control (LLC), distant liver control (DLC), time to distant metastases (DM), progression free survival (PFS) and overall survival (OS)...
December 21, 2016: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28052588/absolute-bioavailability-and-pharmacokinetic-comparability-of-sirukumab-following-subcutaneous-administration-by-a-prefilled-syringe-or-an-autoinjector
#9
Y Zhuang, D E de Vries, S J Marciniak, H Liu, H Zhou, H M Davis, F Leon, D Raible, Z Xu
This phase 1, randomized, open-label study assessed the absolute bioavailability and pharmacokinetic comparability of sirukumab, a human anti-interleukin-6 monoclonal antibody, following subcutaneous (SC) administration via Prefilled Syringe-UltraSafe Passive® Delivery System (PFS-U) or Prefilled Syringe-SmartJect® Autoinjector (PFS-AI; Janssen Research & Development, LLC, Spring House, Pennsylvania). A total of 144 healthy male subjects were randomized to 5 single-dose treatment groups: sirukumab 50 mg and 100 mg (each by PFS-U and PFS-AI) and sirukumab 100 mg intravenous (IV) infusion...
January 3, 2017: Clinical Pharmacology in Drug Development
https://www.readbyqxmd.com/read/28051359/electron-microscopy-of-alkhumra-hemorrhagic-fever-virus
#10
Tariq A Madani, El-Tayb M E Abuelzein, Sawsan M Jalalah, Huda Abu-Araki, Esam I Azhar, Ahmed M Hassan, Hussein M S Al-Bar
Alkhumra hemorrhagic fever virus (AHFV) is a newly described zoonotic flavivirus that was first isolated during 1994-1995 from the Alkhumra district south of Jeddah, Saudi Arabia. Subsequently, the virus was also isolated from Makkah city (2001-2003) and Najran (2008-2009), Saudi Arabia. The virus causes acute febrile illness with hepatitis, hemorrhagic manifestations, and encephalitis. A case fatality rate of 25% was reported among hospitalized patients. Although several biological and molecular characteristics of the virus have been published, no data are available on electron microscopic features of the virus...
January 4, 2017: Vector Borne and Zoonotic Diseases
https://www.readbyqxmd.com/read/28051018/apoptosis-of-lewis-lung-carcinoma-cells-induced-by-microwave-via-p53-and-proapoptotic-proteins-in-vivo
#11
Kou-Dong Zhang, Lin-Rong Tong, Shui-Ming Wang, Rui-Yun Peng, Hai-Dong Huang, Yu-Chao Dong, Xing-Xing Zhang, Qiang Li, Chong Bai
BACKGROUND: Microwave therapy is a minimal invasive procedure and has been employed in clinical practice for the treatment of various types of cancers. However, its therapeutic application in non-small-cell lung cancer and the underlying mechanism remains to be investigated. This study aimed to investigate its effect on Lewis lung carcinoma (LLC) tumor in vivo. METHODS: Fifty LLC tumor-bearing C57BL/6 mice were adopted to assess the effect of microwave radiation on the growth and apoptosis of LLC tumor in vivo...
2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28048893/mo-de-209-01-primer-on-tomosynthesis
#12
A Maidment
: Digital Breast Tomosynthesis (DBT) is rapidly replacing mammography as the standard of care in breast cancer screening and diagnosis. DBT is a form of computed tomography, in which a limited set of projection images are acquired over a small angular range and reconstructed into tomographic data. The angular range varies from 15° to 50° and the number of projections varies between 9 and 25 projections, as determined by the equipment manufacturer. It is equally valid to treat DBT as the digital analog of classical tomography - that is, linear tomography...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048700/tu-d-bra-00-treatment-planning-system-commissioning-and-qa
#13
Greg Salomons
INTRODUCTION: Treatment planning systems (TPS) are a cornerstone of modern radiation therapy. Errors in their commissioning or use can have a devastating impact on many patients. To support safe and high quality care, medical physicists must conduct efficient and proper commissioning, good clinical integration, and ongoing quality assurance (QA) of the TPS. AAPM Task Group 53 and related publications have served as seminal benchmarks for TPS commissioning and QA over the past two decades...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048670/tu-fg-brc-01-cancer-and-the-immune-system-the-basics
#14
E Repasky
: There is substantial current interest in the potential of radiation therapy for synergizing with novel immunotherapies to transform irradiated tumor into an immunogenic hub with capacity to ignite a powerful and adaptive longterm anti-cancer response. Interest stems from new insights into fundamental mechanisms underlying interactions between cancer, radiation and the immune system. Radically new immunotherapy approaches have been proposed, which target the immune system, rather than the cancer itself...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048634/tu-h-brb-01-physics-and-dosimetry-for-radiation-countermeasure-research
#15
J Bourland
: The US government has substantial research and development activities underway for medical countermeasures that will insure the long-term safety and survival of the country's population after unfortunate large-scale biological, chemical and radiological and nuclear events. Preparedness includes research and development of medical countermeasures to address radiation-induced cutaneous and internal injury from radiation and nuclear events as well as for minimizing radiation risks incurred during and after travel in space...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048590/we-ab-brb-03-real-time-volumetric-scintillation-dosimetry-for-radiation-therapy
#16
S Beddar
: Despite widespread IMRT treatments at modern radiation therapy clinics, precise dosimetric commissioning of an IMRT system remains a challenge. In the most recent report from the Radiological Physics Center (RPC), nearly 20% of institutions failed an end-to-end test with an anthropomorphic head and neck phantom, a test that has rather lenient dose difference and distance-to-agreement criteria of 7% and 4 mm. The RPC report provides strong evidence that IMRT implementation is prone to error and that improved quality assurance tools are required...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048588/tu-fg-brc-04-opportunities-for-medical-physics-contributions-to-radiation-immunotherapy
#17
M Oldham
: There is substantial current interest in the potential of radiation therapy for synergizing with novel immunotherapies to transform irradiated tumor into an immunogenic hub with capacity to ignite a powerful and adaptive longterm anti-cancer response. Interest stems from new insights into fundamental mechanisms underlying interactions between cancer, radiation and the immune system. Radically new immunotherapy approaches have been proposed, which target the immune system, rather than the cancer itself...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048581/su-c-204-06-monte-carlo-dose-calculation-for-kilovoltage-x-ray-psoralen-activated-cancer-therapy-x-pact-preliminary-results
#18
S Mein, R Gunasingha, M Nolan, M Oldham, J Adamson
PURPOSE: X-PACT is an experimental cancer therapy where kV x-rays are used to photo-activate anti-cancer therapeutics through phosphor intermediaries (phosphors that absorb x-rays and re-radiate as UV light). Clinical trials in pet dogs are currently underway (NC State College of Veterinary Medicine) and an essential component is the ability to model the kV dose in these dogs. Here we report the commissioning and characterization of a Monte Carlo (MC) treatment planning simulation tool to calculate X-PACT radiation doses in canine trials...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048545/we-de-207a-04-advances-in-radiological-neuro-endovascular-interventional-imaging
#19
S Rudin
: 1. Parallels in the evolution of x-ray angiographic systems and devices used for minimally invasive endovascular therapy Charles Strother - DSA, invented by Dr. Charles Mistretta at UW-Madison, was the technology which enabled the development of minimally invasive endovascular procedures. As DSA became widely available and the potential benefits for accessing the cerebral vasculature from an endovascular approach began to be apparent, industry began efforts to develop tools for use in these procedures...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048539/tu-h-brb-04-radiation-countermeasures-and-the-nci-radiation-research-program
#20
P Prasanna
: The US government has substantial research and development activities underway for medical countermeasures that will insure the long-term safety and survival of the country's population after unfortunate large-scale biological, chemical and radiological and nuclear events. Preparedness includes research and development of medical countermeasures to address radiation-induced cutaneous and internal injury from radiation and nuclear events as well as for minimizing radiation risks incurred during and after travel in space...
June 2016: Medical Physics
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