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https://www.readbyqxmd.com/read/28722283/comparative-analysis-of-storage-conditions-and-homogenization-methods-for-tick-and-flea-species-for-identification-by-maldi-tof-ms
#1
A Nebbak, B El Hamzaoui, J-M Berenger, I Bitam, D Raoult, L Almeras, P Parola
Ticks and fleas are vectors for numerous human and animal pathogens. Controlling them, which is important in combating such diseases, requires accurate identification, to distinguish between vector and non-vector species. Recently, matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS) was applied to the rapid identification of arthropods. The growth of this promising tool, however, requires guidelines to be established. To this end, standardization protocols were applied to species of Rhipicephalus sanguineus (Ixodida: Ixodidae) Latreille and Ctenocephalides felis felis (Siphonaptera: Pulicidae) Bouché, including the automation of sample homogenization using two homogenizer devices, and varied sample preservation modes for a period of 1-6 months...
July 19, 2017: Medical and Veterinary Entomology
https://www.readbyqxmd.com/read/28715745/a-practical-protocol-for-comprehensive-evaluation-of-sulfur-fumigation-of-gastrodia-rhizoma-using-metabolome-and-health-risk-assessment-analysis
#2
Chuanzhi Kang, Chang-Jiang-Sheng Lai, Dan Zhao, Tao Zhou, Da-Hui Liu, Chaogeng Lv, Sheng Wang, Liping Kang, Jian Yang, Zhi-Lai Zhan, Lu-Qi Huang, Lanping Guo
Gastrodia Rhizoma is one of the most heavily sulfur-fumigated edible and medical herbs in the marketplace. We developed a practical protocol using an ultra-performance liquid chromatography coupled with quadrupole time-of-flight-MS(E) (UPLC/QTOF-MS(E))-based metabolome and health risk assessment model to identify characteristic sulfur-fumigated markers, dissect chemical transformation mechanisms, and control the quality of sulfur-fumigated Gastrodia Rhizoma. Two sulfur-containing p-hydroxybenzyl products, one sulfur-containing disaccharide, one glycolipid, and two phospholipids were selected and identified as markers based on multivariate statistical analysis...
July 4, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28703095/identification-of-microorganisms-by-modern-analytical-techniques
#3
Bogusław Buszewski, Agnieszka Rogowska, Paweł Pomastowski, Michał Złoch, Viorica Railean-Plugaru
Rapid detection and identification of microorganisms is a challenging and important aspect in a wide range offields, from medical to industrial, affecting human lives. Unfortunately, classical methods of microorganism identification are based on time-consuming and labor-intensive approaches. Screening techniques require the rapid and cheap grouping of bacterial isolates; however, modern bioanalytics demand comprehensive bacterial studies at a molecular level. Modern approaches for the rapid identification of bacteria use molecular techniques, such as 16S ribosomal RNA gene sequencing based on polymerase chain reaction or electromigration, especially capillary zone electrophoresis and capillary isoelectric focusing...
July 13, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/28687801/altered-kyn-trp-gln-glu-and-met-methionine-sulfoxide-ratios-in-the-blood-plasma-of-medication-free-patients-with-major-depressive-disorder
#4
Hidehiro Umehara, Shusuke Numata, Shin-Ya Watanabe, Yutaka Hatakeyama, Makoto Kinoshita, Yukiko Tomioka, Kiyoshi Nakahara, Takeshi Nikawa, Tetsuro Ohmori
Capillary electrophoresis-time-of-flight mass spectrometry (CE-TOFMS) is a comprehensive, quantitative, and high throughput tool used to analyze metabolite profiles. In the present study, we used CE-TOFMS to profile metabolites found in the blood plasma of 33 medication-free patients with major depressive disorder (MDD) and 33 non-psychiatric control subjects. We then investigated changes which occurred in the metabolite levels during an 8-week treatment period. The medication-free MDD patients and control subjects showed significant differences in their mean levels of 33 metabolites, including kynurenine (KYN), glutamate (Glu), glutamine (Gln), methionine sulfoxide, and methionine (Met)...
July 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28671519/acinetobacter-colistiniresistens-sp-nov-formerly-genomic-species-13-sensu-bouvet-and-jeanjean-and-genomic-species-14-sensu-tjernberg-and-ursing-isolated-from-human-infections-and-characterized-by-intrinsic-resistance-to-polymyxins
#5
Alexandr Nemec, Lenka Radolfova-Krizova, Martina Maixnerova, Ondrej Sedo
Strains of the genusAcinetobacter, classified as genomic species 13BJ/14TU have been previously associated with human infections and resistance to colistin. To clarify the taxonomy of this provisional group, we investigated 24 strains that have been isolated from humans since the 1960s in 10 countries. The genus-wide analysis of the rpoB and gyrB sequences of all strains and whole-genome sequences of strains representing different rpoB/gyrB genotypes showed that the 24 strains formed a distinct monophyletic group within the so-called haemolytic clade of the genus Acinetobacter...
July 3, 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28664820/ten-thousand-kilometre-transfer-of-cardiogenic-shock-patients-on-venoarterial-extracorporeal-membrane-oxygenation-for-emergency-heart-transplantation-cooperation-between-reunion-island-and-metropolitan-france
#6
Clément Charon, Jérôme Allyn, Bruno Bouchet, Fréderic Nativel, Eric Braunberger, Caroline Brulliard, Olivier Martinet, Nicolas Allou
BACKGROUND: There is no heart transplantation centre on the French overseas territory of Reunion Island (distance of 10,000 km). The aim of this study was to describe the characteristics of cardiogenic shock adult patients on venoarterial extracorporeal membrane oxygenation (VA-ECMO) who were transferred from Reunion Island to mainland France for emergency heart transplantation. METHODS: This retrospective observational study was conducted between 2005 and 2015...
June 1, 2017: European Heart Journal. Acute Cardiovascular Care
https://www.readbyqxmd.com/read/28662061/ultra-high-field-upper-extremity-peripheral-nerve-and-non-contrast-enhanced-vascular-imaging
#7
Shailesh B Raval, Cynthia A Britton, Tiejun Zhao, Narayanan Krishnamurthy, Tales Santini, Vijay S Gorantla, Tamer S Ibrahim
OBJECTIVE: The purpose of this study was to explore the efficacy of Ultra-high field [UHF] 7 Tesla [T] MRI as compared to 3T MRI in non-contrast enhanced [nCE] imaging of structural anatomy in the elbow, forearm, and hand [upper extremity]. MATERIALS AND METHOD: A wide range of sequences including T1 weighted [T1] volumetric interpolate breath-hold exam [VIBE], T2 weighted [T2] double-echo steady state [DESS], susceptibility weighted imaging [SWI], time-of-flight [TOF], diffusion tensor imaging [DTI], and diffusion spectrum imaging [DSI] were optimized and incorporated with a radiofrequency [RF] coil system composed of a transverse electromagnetic [TEM] transmit coil combined with an 8-channel receive-only array for 7T upper extremity [UE] imaging...
2017: PloS One
https://www.readbyqxmd.com/read/28630743/comparison-of-five-video-assisted-intubation-devices-by-novice-and-expert-laryngoscopists-for-use-in-the-aeromedical-evacuation-environment
#8
Matthew C Wallace, SSgt Tyler Britton, Robbie Meek, Sharon Walsh-Hart, Col Todd E Carter, Steven J Lisco
BACKGROUND: The critically ill or injured patient undergoing military medical evacuation may require emergent intubation. Intubation may be life-saving, but it carries risks. The novice or infrequent laryngoscopist has a distinct disadvantage because experience is critical for the rapid and safe establishment of a secured airway. This challenge is compounded by the austere environment of the back of an aircraft under blackout conditions. This study determined which of five different video-assisted intubation devices (VAIDs) was best suited for in-flight use by U...
2017: Military Medical Research
https://www.readbyqxmd.com/read/28628474/prediction-of-human-iron-bioavailability-using-rapid-c-elisas-for-human-plasma-hepcidin
#9
Nicole U Stoffel, Christophe Zeder, Eloïse Fort, Dorine W Swinkels, Michael B Zimmermann, Diego Moretti
BACKGROUND: Hepcidin is the central systemic regulator of iron metabolism, but its quantification in biological fluids is challenging. Rapid, accurate and user-friendly methods are needed. Our aim was to assess the ability of hepcidin as measured by three different c-ELISA assays to predict iron bioavailability in humans. METHODS: The three assays used were commercially available DRG and Peninsula assays and the c-ELISA method performed at Radboud University Medical Centre, Nijmegen, The Netherlands (Hepcidinanalysis...
July 26, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28628427/is-there-a-doctor-on-board-in-flight-medical-emergencies
#10
REVIEW
Jose V Nable, Christina L Tupe, Bruce D Gehle, William J Brady
Although not legally required to render assistance in the event of a medical emergency aboard an airplane, physicians have an ethical obligation to do so and should be prepared.
June 2017: Cleveland Clinic Journal of Medicine
https://www.readbyqxmd.com/read/28627917/functional-intimacy-needing-but-not-wanting-the-touch-of-a-stranger
#11
Juliana Schroeder, Ayelet Fishbach, Chelsea Schein, Kurt Gray
Intimacy is often motivated by love, but sometimes it is merely functional. For example, disrobing and being touched at an airport security check serves the goal of catching a flight, not building a relationship. We propose that this functional intimacy induces discomfort, making people prefer greater social distance from their interaction partner. Supporting this prediction, participants who considered (Experiments 1 and 2) or experienced (Experiment 3) more physically intimate medical procedures preferred a health provider who is less social...
June 19, 2017: Journal of Personality and Social Psychology
https://www.readbyqxmd.com/read/28608586/metabolism-of-novel-opioid-agonists-u-47700-and-u-49900-using-human-liver-microsomes-with-confirmation-in-authentic-urine-specimens-from-drug-users
#12
Alex J Krotulski, Amanda L A Mohr, Donna M Papsun, Barry K Logan
Recently, the number of adverse events, including death, involving novel opioids has continued to increase, providing additional and sustained challenges for forensic and medical communities. Identification of emerging novel opioids can be challenging, compounded by detection windows and unknown metabolic profiles. In this study, human liver microsomes were used for the generation of in vitro metabolic profiles of U-47700 and U-49900. Generated metabolites were analyzed via a SCIEX TripleTOF® 5600+ quadrupole time-of-flight mass spectrometer and resulting data files were processing using MetabolitePilot™...
June 13, 2017: Drug Testing and Analysis
https://www.readbyqxmd.com/read/28606186/comparison-of-chemical-profiles-between-the-root-and-aerial-parts-from-three-bupleurum-species-based-on-a-uhplc-qtof-ms-metabolomics-approach
#13
Lin Zhu, Zhi-Tao Liang, Tao Yi, Yue Ma, Zhong-Zhen Zhao, Bao-Lin Guo, Jian-Ye Zhang, Hu-Biao Chen
BACKGROUND: Bupleuri Radix (Chaihu) represents one of the most successful and widely used herbal medicines in Asia for the treatment of many diseases such as inflammatory disorders and infectious diseases over the past 2000 years. In the Chinese Pharmacopoeia, Chaihu is recorded as the dried roots of Bupleurum chinense DC. and B. scorzonerifolium Willd. (Umbelliferae). However, the widespread demand for the herb has tended to far outstrip the supply. Whether the aerial parts, which account for 70 ~ 85% of the dry weights of Bupleurum species, could be used as an alternative for the root has become an important scientific issue for the sustainable utilization of Bupleurum species...
June 12, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28606064/bacteremia-due-to-gordonia-polyisoprenivorans-case-report-and-review-of-literature
#14
Xiurong Ding, Yanhua Yu, Ming Chen, Chen Wang, Yanfang Kang, Hongman Li, Jinli Lou
BACKGROUND: Gordonia polyisoprenivorans is a ubiquitous aerobic actinomycetes bacterium that rarely cause infections in humans. Here, we report a case of G. polyisoprenivorans catheter-related bacteremia in an AIDS patient. CASE PRESENTATION: A 37-year-old man with a past medical history of AIDS-related lymphoma suffered bacteremia caused by a Gram-positive corynebacterium. The strain was identified as a Gordonia species by matrix-assisted laser desorption ionization-time of flight mass spectrometry and confirmed to G...
June 12, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28592099/-study-of-the-association-between-polymorphism-of-persistent-obesity-human-leptin-gene-leptin-receptor-gene-and-molecular-subtypes-of-breast-cancer
#15
X L Yuan, Z P Xu, C R Liu, L P Yan, P Tao, P Xiong, Q Li, M Zhou, H Li, M Zhao, J Y Li
Objectives: To explore the association between the polymorphism of persistent obesity and genetic variations in the LEP (human leptin gene, LEP) and LEPR (leptin receptor gene, LEPR) genes and different molecular subtypes of breast cancer. Methods: All 703 female patients of breast cancer diagnosed by histopathology in the Sichuan Cancer Hospital or the West China Hospital, excluding patients with metastatic breast cancer or mental disease, were selected as cases from April 2014 to May 2015. At the same time, 805 healthy women received physical examination in medical examination center of Sichuan People Hospital or Shuangliu maternal and child health care hospital, excluding those with therioma, breast disease, and mental disease, were enrolled in control group...
June 6, 2017: Zhonghua Yu Fang Yi Xue za Zhi [Chinese Journal of Preventive Medicine]
https://www.readbyqxmd.com/read/28590798/beyond-ketamine-and-phencyclidine-analytically-confirmed-use-of-multiple-novel-arylcyclohexylamines
#16
Stephen Thornton, David Lisbon, Thomas Lin, Roy Gerona
BACKGROUND: Methoxetamine and 3-methoxy-phencyclidine are novel arylcyclohexylamines whose use and clinical toxicity are poorly reported in the medical literature. We report a case of analytically confirmed use of both methoxetamine and 3-methoxy-phencyclidine. CASE REPORT: A 27-year-old male presented 10 hours after insufflating an Internet-obtained powder. He was hypertensive, tachycardic, and demonstrated dissociated affect, a delayed verbal response to questions, ataxia, and vertical nystagmus...
June 7, 2017: Journal of Psychoactive Drugs
https://www.readbyqxmd.com/read/28585341/investigation-of-a-correlation-between-taxane-based-chemotherapy-and-the-ultrasonic-time-of-flight-of-human-fingernails
#17
R A Vacarescu, B Slak, A Maeva, C Hamm, N Lewoc, A T Daabous, E Strumban, R G Maev
BACKGROUND: Medical practitioners have long associated the physical appearance of human fingernails with certain underlying health conditions due to their direct connection to the vascular system. The objective of this study was to demonstrate how human fingernails can potentially be used as a biomarker to determine the severity of a patient's reaction to chemotherapy. METHODS: Quantitative investigation of fingernails in patients undergoing taxane-based chemotherapy was conducted using a high-frequency 50 MHz ultrasound device in B-mode in the form of a pilot study...
June 5, 2017: Skin Research and Technology
https://www.readbyqxmd.com/read/28574448/simultaneous-quantification-of-multiple-representative-components-in-the-xian-ling-gu-bao-capsule-by-ultra-performance-liquid-chromatography-coupled-with-quadrupole-time-of-flight-tandem-mass-spectrometry
#18
Zhi-Hong Yao, Zi-Fei Qin, Hong Cheng, Xiao-Meng Wu, Yi Dai, Xin-Luan Wang, Ling Qin, Wen-Cai Ye, Xin-Sheng Yao
Xian-Ling-Gu-Bao capsule (XLGB), a famous traditional Chinese medicine prescription, is extensively used for the treatment of osteoporosis in China. However, few studies on the holistic quality control of XLGB have been reported. In this study, a reliable method using 18 representative components in XLGB was successfully established and applied to evaluate 34 batches of XLGB samples by ultra-performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry (UPLC/Q-TOF-MS). The choice of quantitative markers mostly followed four principles, i...
June 2, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28570350/impact-of-critical-care-air-transport-team-ccatt-ventilator-management-on-combat-mortality
#19
Joseph K Maddry, Alejandra G Mora, Shelia C Savell, Crystal A Perez, Phillip E Mason, James K Aden, Vikhyat S Bebarta
BACKGROUND: Aeromedical evacuation platforms such as Critical Care Air Transport Teams (CCATTs) play a vital role in the transport and care of critically injured and ill patients in the combat theater. Mechanical ventilation is used to support patients with failing respiratory function and patients requiring high levels of sedation. Mechanical ventilation, if not managed appropriately, can worsen or cause lung injury, as well as contribute to increased morbidity.The purpose of this study was to evaluate the impact of ARDSNet protocol compliance during aeromedical evacuation of ventilated combat injured patients...
May 30, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28566082/-femoral-hemodialysis-catheter-related-bacteremia-due-to-globicatella-sanguinis-challenges-in-species-identification
#20
Elif Aktaş, Nafia Canan Gürsoy, Tamer Sakacı, Yener Koç, Aziz Ahmad Hamidi, Emin Bulut, Duygu Erdemir, Barış Otlu
In this case, catheter-related bacteremia due to Globicatella sanguinis in a 43 years old female patient undergoing hemodialysis with the diagnosis of diabetic nephropathy was presented and the methods in the laboratory diagnosis of the rare opportunistic pathogen, Globicatella cins, were nvestigated. A set of peripheral blood cultures and simultaneous catheter culture was obtained from the patient in third of May 2016. Biochemical tests, Phoenix (Becton Dickinson, USA) and MicroScan (Beckman Coulter, USA) automated systems and matrix assisted laser desorption/ionization-time of flight-mass spectrometry (MALDI-TOF MS) based Microflex MS (Bruker, Daltonics, Germany) and VITEK MS (database v2...
April 2017: Mikrobiyoloji Bülteni
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