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https://www.readbyqxmd.com/read/28108381/metabolomic-study-of-the-intervention-effects-of-shuihonghuazi-formula-a-traditional-chinese-medicinal-formulae-on-hepatocellular-carcinoma-hcc-rats-using-performance-hplc-esi-tof-ms
#1
Yongrui Bao, Shuai Wang, Xinxin Yang, Li Tianjiao, Mingyue Xia, Xiansheng Meng
ETHNOPHARMACOLOGICAL RELEVANCE: Metabolomics is the comprehensive assessment of endogenous metabolites of a biological system in a holistic context, and its property consists with the global view of Traditional Chinese Medicine (TCM). Shuihonghuazi Formula (SHHZF) has been used for liver cancer early treatment in clinical for more than thirty years, but its mechanism remains unclear completely. This paper was designed to explore the therapeutic effects of SHHZF on liver cancer and its metabolomic characters...
January 17, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28098420/deciphering-chemical-interactions-between-glycyrrhizae-radix-and-coptidis-rhizoma-by-liquid-chromatography-with-transformed-multiple-reaction-monitoring-mass-spectrometry
#2
Zhenhao Li, Ting Liu, Jie Liao, Ni Ai, Xiaohui Fan, Yiyu Cheng
In this study, we propose an integrated strategy for the efficient identification and quantification of herbal constituents using liquid chromatography with mass spectrometry. First, liquid chromatography with quadrupole time-of-flight mass spectrometry was employed for the chemical profiling of herbs, where a targeted following non-targeted approach was developed to detect trace constituents by using structural correlations and extracted ion chromatograms. Next, ion pairs and parameters of MS(2) of quadrupole time-of-flight mass spectrometry were selected to design multiple reaction monitoring transitions for the identified compounds on liquid chromatography with triple quadrupole mass spectrometry...
January 18, 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/28090345/electronically-captured-patient-reported-physical-function-an-important-vital-sign-in-obesity-medicine
#3
J Fleming, G C Wood, C Seiler, A Cook, M R Lent, C D Still, P N Benotti, B A Irving
OBJECTIVES: Impaired physical function (i.e., inability to walk 200 feet, climb a flight of stairs or perform activities of daily living) predicts poor clinical outcomes and adversely impacts medical and surgical weight management. However, routine assessment physical function is seldom performed clinically. The PROMIS Physical Function Short Form 20a (SF-20a) is a validated questionnaire for assessing patient reported physical function, which includes published T-score percentiles adjusted for gender, age and education...
December 2016: Obesity Science & Practice
https://www.readbyqxmd.com/read/28089381/pet-ct-underlying-physics-instrumentation-and-advances
#4
I Torres Espallardo
Since it was first introduced, the main goal of PET/CT has been to provide both PET and CT images with high clinical quality and to present them to radiologists and specialists in nuclear medicine as a fused, perfectly aligned image. The use of fused PET and CT images quickly became routine in clinical practice, showing the great potential of these hybrid scanners. Thanks to this success, manufacturers have gone beyond considering CT as a mere attenuation corrector for PET, concentrating instead on design high performance PET and CT scanners with more interesting features...
January 12, 2017: Radiología
https://www.readbyqxmd.com/read/28067965/rp-hplc-dad-esi-qtof-ms-based-metabolic-profiling-of-the-potential-olea-europaea-by-product-wood-and-its-comparison-with-leaf-counterpart
#5
Sonda Ammar, Maria Del Mar Contreras, Boutheina Gargouri, Antonio Segura-Carretero, Mohamed Bouaziz
INTRODUCTION: Olea europaea L. organs such as leaves, stems and roots have been associated with numerous in vivo and in vitro biological activities and used for traditional medicinal purposes. However, tree wood is an untapped resource with little information about their chemical composition. OBJECTIVE: That is why, the objective of this study is to increase the knowledge about phytochemicals from 'Chemlali' olive wood by means of mass spectrometry-based analyses...
January 9, 2017: Phytochemical Analysis: PCA
https://www.readbyqxmd.com/read/28061918/clinical-experience-and-learning-style-of-flight-nurse-and-aeromedical-evacuation-technician-students
#6
Marla J De Jong, Susan F Dukes, Karey M Dufour, Darcy L Mortimer
BACKGROUND: The clinical experience and preferred learning style of U.S. Air Force flight nurses and aeromedical evacuation technicians are unknown. METHODS: Using a cross-sectional survey design, we gathered data regarding the clinical experience, level of comfort providing clinical care, and preferred learning style of 77 active duty (AD), Air Force Reserve (AFR), and Air National Guard (ANG) nurses enrolled in the U.S. Air Force School of Aerospace Medicine Flight Nurse course, and 121 AD, AFR, and ANG medical technicians enrolled in the Aeromedical Evacuation Technician course...
January 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28061917/upper-respiratory-infections-and-barotrauma-among-commercial-pilots
#7
Nina Monrad Boel, Mads Klokker
BACKGROUND: Health incapacitation is a serious threat to flight safety. Therefore, a study conducted 10 yr ago examined the incidents of ear-nose-throat (ENT) barotrauma and upper respiratory infection (URI) among commercial pilots and found that a large number continued to carry out their duties despite the risk of incapacitation. Now, 10 yr later, this new study examines if the attention to URIs has improved. METHOD: This study was conducted at the Danish Aeromedical Centre over the course of 1 yr with 463 valid respondents to a questionnaire on URIs and ENT barotrauma...
January 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28061784/inhibition-of-influenza-virus-via-a-sesquiterpene-fraction-isolated-from-laggera-pterodonta-by-targeting-the-nf-%C3%AE%C2%BAb-and-p38-pathways
#8
YuTao Wang, Beixian Zhou, Jingguang Lu, QiaoLian Chen, Huihui Ti, WanYi Huang, Jing Li, ZiFeng Yang, Zhihong Jiang, XinHua Wang
BACKGROUND: Influenza virus poses serious threats to human health, especially human infection with avian influenza virus. Laggera pterodonta (DC.) Benth is a medicinal plant that is widely used in Traditional Chinese Medicine, especially in Yunnan province, and has been used to treat influenza, pharyngolaryngitis, and bronchitis. However, the compound(s) responsible for the activity and their mechanisms of action against the influenza virus remain to be elucidated. METHODS: L...
January 6, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28059486/comparison-of-the-origin-and-phenolic-contents-of-lycium-ruthenicum-murr-by-high-performance-liquid-chromatography-fingerprinting-combined-with-quadrupole-time-of-flight-mass-spectrometry-and-chemometrics
#9
Irma Belinda Yossa Nzeuwa, Yuanyuan Xia, Zhou Qiao, Feng Feng, Wenyuan Liu, Wei Qu
The fruits of Lycium ruthenicum Murr. have long been used in folk medicine. Nevertheless, detailed information related to its phenolic composition and its quality control remains scarce. In this study, a simple and reproducible method, based on high-performance liquid chromatography combined with chemometrics, was developed to authenticate 18 samples of L. ruthenicum Murr. collected from different parts of China through fingerprint analysis. The main peaks were identified by quadrupole time-of-flight electrospray ionization mass spectrometry...
January 6, 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/28052484/characterization-of-isochlorogenic-acid-a-metabolites-in-rats-using-high-performance-liquid-chromatography-quadrupole-time-of-flight-mass-spectrometry
#10
Jing Wang, Guoxiu Cao, Hong Wang, Hui Ye, Yunxi Zhong, Guangji Wang, Haiping Hao
Isochlorogenic acid A is widely presented in fruits, vegetables, and herbal medicines, and is characterized with anti-inflammatory, hepatoprotective and antiviral properties. However, little is known about its metabolic fate and pharmacokinetic properties. This study is thus designed to investigate the metabolic fate of isochlorogenic acid A. An analytical method based on high performance liquid chromatography/quadrupole time-of-flight mass spectrometry (HPLC/Q-TOF MS) was established to characterize the metabolites of isochlorogenic acid A in the plasma, urine and feces of rats...
January 4, 2017: Biomedical Chromatography: BMC
https://www.readbyqxmd.com/read/28048215/mo-ab-206-00-nuclear-medicine-physics-and-testing
#11
Sharon White
: This education session will cover the physics and operation principles of gamma cameras and PET scanners. The first talk will focus on PET imaging. An overview of the principles of PET imaging will be provided, including positron decay physics, and the transition from 2D to 3D imaging. More recent advances in hardware and software will be discussed, such as time-of-flight imaging, and improvements in reconstruction algorithms that provide for options such as depth-of-interaction corrections...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047563/mo-ab-206-01-pet-physics
#12
T Turkington
: This education session will cover the physics and operation principles of gamma cameras and PET scanners. The first talk will focus on PET imaging. An overview of the principles of PET imaging will be provided, including positron decay physics, and the transition from 2D to 3D imaging. More recent advances in hardware and software will be discussed, such as time-of-flight imaging, and improvements in reconstruction algorithms that provide for options such as depth-of-interaction corrections...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046914/mo-ab-206-02-testing-gamma-cameras-based-on-tg177-wg-report
#13
J Halama
: This education session will cover the physics and operation principles of gamma cameras and PET scanners. The first talk will focus on PET imaging. An overview of the principles of PET imaging will be provided, including positron decay physics, and the transition from 2D to 3D imaging. More recent advances in hardware and software will be discussed, such as time-of-flight imaging, and improvements in reconstruction algorithms that provide for options such as depth-of-interaction corrections...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28044413/identification-of-metabolites-of-palmatine-in-rats-after-oral-administration-using-ultra-high-performance-liquid-chromatography-quadrupole-time-of-flight-mass-spectrometry
#14
Kun Wang, Liwei Chai, Liqin Ding, Feng Qiu
RATIONALE: Palmatine (PAL), a protopalmatine alkaloid, is an active constituent in a number of medicinal plants. In order to obtain a comprehensive and systematic metabolic profile of PAL, we investigated its metabolites in plasma, liver tissue, bile, urine, and feces samples after intragastrical administration to sprague-dawly rats with a dose of 100 mg/kg/day. METHODS: In this study, a rapid and sensitive method by ultra-performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry (UPLC/Q-TOF/MS), and metabolynx(TM) software with mass defect filter (MDF) technique was developed for screening and identification of the metabolites...
January 3, 2017: Rapid Communications in Mass Spectrometry: RCM
https://www.readbyqxmd.com/read/28033584/identification-bioactivity-evaluation-and-pharmacokinetics-of-multiple-components-in-rat-serum-after-oral-administration-of-xian-ling-gu-bao-capsule-by-ultra-performance-liquid-chromatography-coupled-with-quadrupole-time-of-flight-tandem-mass-spectrometry
#15
Zhi-Hong Yao, Zi-Fei Qin, Liang-Liang He, Xin-Luan Wang, Yi Dai, Ling Qin, Frank J Gonzalez, Wen-Cai Ye, Xin-Sheng Yao
The Xian-Ling-Gu-Bao capsule (XLGB) is a famous traditional Chinese medicine prescription (TCMP), which has proven effective in osteoporosis treatment. However, due to the lack of a dynamic XLGB profile, the in vivo pharmacokinetics of multiple bioactive components within this medicine remains unknown. In the present study, ultra-performance liquid chromatography coupled with quadrupole time-of-flight tandem mass spectrometry (UPLC/Q-TOF-MS) identified a total of eighteen prototypes (using reference standards) in rat serum after oral administration of XLGB...
January 15, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28032246/identification-and-characterization-of-diploid-and-tetraploid-in-platycodon-grandiflorum
#16
Jeoung-Hwa Shin, Yun Gyong Ahn, Ju-Hee Jung, Sun-Hee Woo, Hag-Hyun Kim, Shela Gorinstein, Hee-Ock Boo
Platycodon grandiflorum (PG), a species of herbaceous flowering perennial plant of the family Campanulaceae, has been used as a traditional oriental medicine for bronchitis, asthma, pulmonary tuberculosis, diabetes, hepatic fibrosis, bone disorders and many others similar diseases and as a food supplement. For the primary profiling of PG gas chromatography coupled with high resolution - time of flight mass spectrometry (GC/HR-TOF MS) was used as an analytical tool. A comparison of optimal extraction of metabolites was carried out with a number of solvents [hexane, methylene chloride, methanol, ethanol, methanol: ethanol (70:30, v:v)]...
December 28, 2016: Plant Foods for Human Nutrition
https://www.readbyqxmd.com/read/28029296/characterization-of-kewda-volatile-components-by-comprehensive-two-dimensional-gas-chromatography-time-of-flight-mass-spectrometry
#17
Noohi Nasim, Asit Ray, Subhashree Singh, Sudipta Jena, Ambika Sahoo, Basudeba Kar, I Sriram Sandeep, Sujata Mohanty, Sanghamitra Nayak
Kewda (Pandanus fascicularis Lam.) is a well known medicinal and aromatic plant. The paper aims to precisely characterize volatile constituents present in Kewda flower oil using comprehensive two-dimensional gas chromatography coupled to time of flight mass spectrometry (GCxGC-TOFMS). A total of 159 components were identified due to enhanced chromatographic separation and mass spectral deconvolution of GCxGC-TOFMS. On the basis of its chemical structure, the identified compounds were grouped into hydrocarbons, alcohols, ethers, ketones, esters, nitrogen compounds, aldehydes, acids, lactones, halides and sulfur containing compounds...
April 2017: Natural Product Research
https://www.readbyqxmd.com/read/28027558/cognitive-evoked-potentials-p300-after-radiation-exposure
#18
K M Loganovsky, K V Kuts
OBJECTIVE: The study was aimed at evaluating features of brain information processes and cognitive functioning in the remote period after irradiation due to the Chornobyl accident by using cognitive evoked potentials P300. MATERIALS AND METHODS: The study included 128 people, 112 male Chornobyl clean up workers in 1986-1987 with the records of radiation doses available in Clinical and Epidemiological Registry (CER) of State Institution «National Research Center for Radiation Medicine of the National Academy of Medical Sciences of Ukraine» (NRCRM) (study group) and 16 unexposed persons due to the Chornobyl disaster (control group)...
December 2016: Problemy Radiat︠s︡iĭnoï Medyt︠s︡yny Ta Radiobiolohiï
https://www.readbyqxmd.com/read/28027163/the-business-of-health-physics-jobs-in-a-changing-market
#19
Matthew P Moeller
The health physics profession was born abruptly when once rare and precious radioactive materials became commonplace. The technological advancements that triggered an industrial complex and ended World War II demanded radiation safety on an unprecedented scale. Until then, protective measures against radiation were largely absent in laboratories. Over the subsequent decades, health physicists began protecting people and the environment in a wide range of settings including medical, research, and industrial...
February 2017: Health Physics
https://www.readbyqxmd.com/read/28027117/precision-medicine-starts-with-preanalytics-real-time-assessment-of-tissue-fixation-quality-by-ultrasound-time-of-flight-analysis
#20
Melissa L Lerch, Daniel R Bauer, David Chafin, Abbey Theiss, Michael Otter, Geoffrey S Baird
Personalized medicine promises diagnosis and treatment of disease at the individual level and relies heavily on clinical specimen integrity and diagnostic assay quality. Preanalytics, the collection and handling steps of a clinical specimen before immunohistochemistry or other clinical assay, are critically important to enable the correct diagnosis of disease. However, the effects of preanalytics are often overlooked due to a lack of standardization and limited assessment tools to quantify their variation. Here, we report a novel real-time ultrasound time-of-flight instrument that is capable of monitoring and imaging the critical step in formalin fixation, diffusion of the fixative into tissue, which provides a quantifiable quality metric for tissue fixation in the clinical laboratory ensuring consistent downstream molecular assay results...
December 23, 2016: Applied Immunohistochemistry & Molecular Morphology: AIMM
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