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https://www.readbyqxmd.com/read/28346954/evaluation-of-probably-benign-adnexal-masses-in-postmenopausal-women
#1
Burcu Kisa Karakaya, Emre Ozgu, Hatice Celik Kansu, Ozlem Evliyaoglu, Esma Sarikaya, Bugra Coskun, Salim Erkaya
Background Preoperatively identification of malignancy potential of a postmenopausal adnexal masses is important. Aim To evaluate the effectiveness of the Risk of Malignancy Index-2 in presumably benign adnexal masses in postmenopausal women. Study Design Retrospective, observational study. Methods 119 women with postmenopausal adnexal masses with a preliminary diagnosis of benign tumors according to the Risk of Malignancy Index-2 were included. Age, duration of menopause, ultrasonographic findings, and serum CA-125 levels were recorded preoperatively...
March 27, 2017: Revista Brasileira de Ginecologia e Obstetrícia
https://www.readbyqxmd.com/read/28346926/microbiota-and-obesity
#2
Erika Isolauri
Obesity is globally the most prevalent nutritional disorder. Multifaceted therapeutic approaches are called for to halt the cascade from neonatal adiposity/high birth weight to childhood excessive weight gain/adult obesity with comorbidities. Recent experimental and clinical data provide one new target for interventions aiming to close this vicious circle: the microbiota. An aberrant gut microbiota, dysbiosis, induces immune and metabolic disturbances both locally and, consequent upon impaired gut barrier function, also systemic low-grade inflammation, which is causally linked to insulin resistance...
2017: Nestlé Nutrition Institute Workshop Series
https://www.readbyqxmd.com/read/28346887/high-resolution-mass-spectrometry-as-an-alternative-detection-method-to-tandem-mass-spectrometry-for-the-analysis-of-endogenous-steroids-in-serum
#3
Federico Ponzetto, Julien Boccard, Norbert Baume, Tiia Kuuranne, Serge Rudaz, Martial Saugy, Raul Nicoli
Recently, steroid hormones quantification in blood showed a promising ability to detect testosterone doping and interesting complementarities with the urinary module of the Athlete Biological Passport (ABP). In this work, an ultra-high pressure liquid chromatography-high-resolution mass spectrometry (UHPLC-HRMS) method was developed for the quantification of eleven endogenous steroids in serum. The performance of the full scan and targeted SIM acquisition modes was evaluated and compared to the performance of tandem mass spectrometry (MS/MS)...
March 18, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28346886/simultaneous-determination-of-amitraz-chlordimeform-formetanate-and-their-main-metabolites-in-human-urine-by-high-performance-liquid-chromatography-tandem-mass-spectrometry
#4
Xue Gao, Yanglan Tan, Hao Guo
A rapid, simple and reliable high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) method was developed for simultaneous determination of amitraz, chlordimeform, formetanate and their main metabolites, N-(2,4-dimethylphenyl)-N-methyl-formamidine (DMPF), 2,4-dimethylformamidine (DMF), 2,4-dimethylaniline (DMA), 4-chloro-2-methylaniline and 3-hydroxyacetanilide in human urine. The urine samples were mixed with buffer solutions (pH 8) and subsequently cleaned up by solid supported liquid/liquid extraction (SLE)...
March 11, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28346885/plasma-and-brain-pharmacokinetics-of-ganoderic-acid-a-in-rats-determined-by-a-developed-uflc-ms-ms-method
#5
Fang-Rui Cao, Bing-Xin Xiao, Li-Sha Wang, Xue Tao, Ming-Zhu Yan, Rui-Le Pan, Yong-Hong Liao, Xin-Min Liu, Qi Chang
Ganoderic acid A (GAA), an active triterpenoid of the traditional Chinese herbal medicine Lingzhi, has been reported to exhibit antinociceptive, antioxidative, and anti-cancer activities. The present study aims to establish a sensitive and rapid UPLC-MS/MS method for studying the plasma and brain pharmacokinetics of GAA in rats. The analytes were separated on a C18 column eluted with a gradient mobile phase consisting of acetonitrile and 0.1% aqueous formic acid at 0.3mL/min. The eluate was monitored by a mass detector using an MRM (m/z, 515...
March 11, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28346880/human-exposure-to-bisphenol-a-and-liver-health-status-quantification-of-urinary-and-circulating-levels-by-lc-ms-ms
#6
Carla Nicolucci, Sonia Errico, Alessandro Federico, Marcello Dallio, Carmelina Loguercio, Nadia Diano
A selective and highly sensitive analytical methodology for determination of Bisphenol A in human plasma was developed and validated. The method was based on selective liquid/solid extraction, combined with liquid chromatography-electrospray ionization tandem mass spectrometry in the multiple reaction monitoring mode and negative ionization. The linearity of the detector response was verified in human plasma over the concentration range 0.100-200ngmL(-1). The detection limit was 0.03ngmL(-1) and the quantification limit was 0...
March 10, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28346870/-to-the-victor-go-the-spoils-infants-expect-resources-to-align-with-dominance-structures
#7
Elizabeth A Enright, Hyowon Gweon, Jessica A Sommerville
Previous research has found that within the first year of life infants possess rich knowledge about social structures (i.e., that some individuals are dominant over other individuals) as well as expectations about resource distributions (i.e., that resources are typically distributed equally to recipients). We investigated whether infants' expectations about resource distribution can be modulated by information about the dominance structure between the recipients. We first replicated the finding that infants attribute a stable dominance hierarchy to a pair of individuals when their goals conflicted and one individual yielded to the other (Expt...
March 24, 2017: Cognition
https://www.readbyqxmd.com/read/28346869/multisensory-object-perception-in-infancy-4-month-olds-perceive-a-mistuned-harmonic-as-a-separate-auditory-and-visual-object
#8
Nicholas A Smith, Nicole A Folland, Diana M Martinez, Laurel J Trainor
Infants learn to use auditory and visual information to organize the sensory world into identifiable objects with particular locations. Here we use a behavioural method to examine infants' use of harmonicity cues to auditory object perception in a multisensory context. Sounds emitted by different objects sum in the air and the auditory system must figure out which parts of the complex waveform belong to different sources (auditory objects). One important cue to this source separation is that complex tones with pitch typically contain a fundamental frequency and harmonics at integer multiples of the fundamental...
March 24, 2017: Cognition
https://www.readbyqxmd.com/read/28346858/circulating-soluble-il-6-receptor-concentration-and-visceral-adipocyte-size-are-related-to-insulin-resistance-in-taiwanese-adults-with-morbid-obesity
#9
Feng-Chih Kuo, Ya-Hsien Huang, Fu-Huang Lin, Yi-Jen Hung, Chang-Hsun Hsieh, Chieh-Hua Lu, Sheng-Chiang Su, Chia-Luen Huang, Chien-Hsing Lee, Nain-Feng Chu
BACKGROUND: Morbid obesity is related to chronic inflammation and many metabolic complications. Interleukin (IL)-6 plays a pivotal pathophysiological role in obesity, and IL-6 trans-signaling through the soluble IL-6 receptor (sIL-6R) has a major proinflammatory effect. The aim of this study was to investigate the association between sIL-6R, adipocyte size, and insulin resistance in morbidly obese individuals. METHODS: We measured concentrations of sIL-6R, high-sensitivity C-reactive protein, and lipid parameters and estimated homeostasis model assessment of insulin resistance (HOMA-IR) before the patients underwent bariatric surgery...
March 27, 2017: Metabolic Syndrome and related Disorders
https://www.readbyqxmd.com/read/28346829/polymorphisms-in-the-glucocorticoid-receptor-gene-and-associations-with-glucocorticoid-induced-avascular-osteonecrosis-of-the-femoral-head
#10
Zhanqin Zhao, Yun Xue, Dun Hong, Hongjun Zhang, Zhigang Hu, Shunwu Fan, Haixiao Chen
AIMS: Individual sensitivity to glucocorticoid (GC) therapy might play a pivotal role in the development of GC-induced avascular necrosis of the femoral head (GANFH). In a growing number of studies, common polymorphisms of the glucocorticoid receptor gene (nuclear receptor subfamily 3 group C member 1 [NR3C1]) have been associated with variability in the individual sensitivity to GCs. However, whether the NR3C1 gene polymorphisms actually influence the susceptibility of GANFH remains unknown...
March 27, 2017: Genetic Testing and Molecular Biomarkers
https://www.readbyqxmd.com/read/28346822/sensitivity-analysis-for-matched-pair-analysis-of-binary-data-from-worst-case-to-average-case-analysis
#11
Raiden Hasegawa, Dylan Small
In matched observational studies where treatment assignment is not randomized, sensitivity analysis helps investigators determine how sensitive their estimated treatment effect is to some unmeasured confounder. The standard approach calibrates the sensitivity analysis according to the worst case bias in a pair. This approach will result in a conservative sensitivity analysis if the worst case bias does not hold in every pair. In this paper, we show that for binary data, the standard approach can be calibrated in terms of the average bias in a pair rather than worst case bias...
March 27, 2017: Biometrics
https://www.readbyqxmd.com/read/28346816/child-adult-differences-in-using-dual-task-paradigms-to-measure-listening-effort
#12
Erin M Picou, Lauren M Charles, Todd A Ricketts
Purpose: The purpose of the project was to investigate the effects modifying the secondary task in a dual-task paradigm to measure objective listening effort. To be specific, the complexity and depth of processing were increased relative to a simple secondary task. Method: Three dual-task paradigms were developed for school-age children. The primary task was word recognition. The secondary task was a physical response to a visual probe (simple task), a physical response to a complex probe (increased complexity), or word categorization (increased depth of processing)...
March 27, 2017: American Journal of Audiology
https://www.readbyqxmd.com/read/28346811/improved-soluble-scfv-elisa-screening-approach-for-antibody-discovery-using-phage-display-technology
#13
Mohammad R Tohidkia, Maryam Sepehri, Shirin Khajeh, Jaleh Barar, Yadollah Omidi
Phage display technology (PDT) is a powerful tool for the isolation of recombinant antibody (Ab) fragments. Using PDT, target molecule-specific phage-Ab clones are enriched through the "biopanning" process. The individual specific binders are screened by the monoclonal scFv enzyme-linked immunosorbent assay (ELISA) that may associate with inevitable false-negative results. Thus, in this study, three strategies were investigated for optimization of the scFvs screening using Tomlinson I and J libraries, including (1) optimizing the expression of functional scFvs, (2) improving the sensitivity of ELISA, and (3) preparing different samples containing scFvs...
March 1, 2017: SLAS Discov
https://www.readbyqxmd.com/read/28346810/an-automated-multiplexed-hepatotoxicity-and-cyp-induction-assay-using-heparg-cells-in-2d-and-3d
#14
Lindsey M Ott, Karthik Ramachandran, Lisa Stehno-Bittel
Drug-induced liver injury (DILI) and drug-drug interactions (DDIs) are concerns when developing safe and efficacious compounds. We have developed an automated multiplex assay to detect hepatotoxicity (i.e., ATP depletion) and metabolism (i.e., cytochrome P450 1A [CYP1A] and cytochrome P450 3A4 [CYP3A4] enzyme activity) in two-dimensional (2D) and three-dimensional (3D) cell cultures. HepaRG cells were cultured in our proprietary micromold plates and produced spheroids. HepaRG cells, in 2D or 3D, expressed liver-specific proteins throughout the culture period, although 3D cultures consistently exhibited higher albumin secretion and CYP1A/CYP3A4 enzyme activity than 2D cultures...
March 1, 2017: SLAS Discov
https://www.readbyqxmd.com/read/28346792/effects-of-ifn-%C3%AE-on-the-cell-growth-and-the-expression-of-adam33-gene-in-human-embryonic-lung-mrc-5-fibroblasts-in-vitro
#15
Wenjing Li, Rongrong Liang, Huarong Huang, Baojing Wu, Yingqiang Zhong
OBJECTIVE: To investigate the effects of interferon-γ (IFN-γ) on the proliferation and viability of human embryonic lung Mrc-5 fibroblasts in vitro and the expression of the A Disintegrin and Metalloprotease 33 (ADAM33) gene and to explore the mechanism of airway remodeling. METHODS: Mrc-5 fibroblasts were sensitized with Dermatophagoides farinae 1 (Derf1) in vitro to mimic in vivo conditions observed in bronchial asthma. An inverted fluorescence microscope was used to observe changes in cell morphology before and after treatment...
March 27, 2017: Journal of Asthma: Official Journal of the Association for the Care of Asthma
https://www.readbyqxmd.com/read/28346775/hyperinsulinism-causing-mutations-cause-multiple-molecular-defects-in-sur1-nbd1
#16
Claudia Paola Alvarez, Marijana Stagljar, D Ranjith Muhandiram, Voula Kanelis
The sulfonylurea receptor 1 (SUR1) protein forms the regulatory subunit in ATP sensitive K+ (KATP) channels in the pancreas. SUR proteins are members of the ATP-binding cassette (ABC) superfamily of proteins. Binding and hydrolysis of MgATP at the SUR nucleotide binding domains (NBDs) lead to channel opening. Pancreatic KATP channels play an important role in insulin secretion. SUR1 mutations that result in increased channel opening ultimately inhibit insulin secretion and lead to neonatal diabetes. In contrast, SUR1 mutations that disrupt trafficking and/or decrease gating of KATP channels cause congenital hyperinsulinism, where over secretion of insulin occurs even in the presence of low glucose...
March 27, 2017: Biochemistry
https://www.readbyqxmd.com/read/28346764/mapping-the-interactions-of-selective-biochemical-probes-of-antibody-conformation-by-hydrogen-deuterium-exchange-mass-spectrometry
#17
Ulrike Leurs, Hermann Beck, Lea Bonnington, Ingo Lindner, Ewa Pol, Kasper Dyrberg Rand
Protein-based pharmaceuticals represent the fastest growing group of drugs in development in the pharmaceutical industry. One of the major challenges in the discovery, development and distribution of biopharmaceuticals is the assessment of changes in their higher-order structure due to chemical modifications. Here, we investigate the interactions of three different biochemical probes (Fabs) generated to detect conformational changes in a therapeutic IgG1 antibody (mAbX) by local hydrogen-deuterium exchange mass spectrometry (HDX-MS)...
March 27, 2017: Chembiochem: a European Journal of Chemical Biology
https://www.readbyqxmd.com/read/28346762/predicting-the-pain-continuum-after-adolescent-idiopathic-scoliosis-surgery-a-prospective-cohort-study
#18
V Chidambaran, L Ding, D L Moore, K Spruance, E M Cudilo, V Pilipenko, M Hossain, P Sturm, S Kashikar-Zuck, L J Martin, S Sadhasivam
BACKGROUND: Chronic postsurgical pain (CPSP) affects half a million children annually in the United States, with dire socioeconomic consequences, including long-term disability into adulthood. The few studies of CPSP in children are limited by sample size, follow-up duration, non-homogeneity of surgical procedure and factors evaluated. METHODS: In a prospective study of 144 adolescents undergoing a single major surgery (spine fusion), we evaluated demographic, perioperative, surgical and psychosocial factors as predictors of a continuum of postsurgical pain: immediate, pain maintenance at 2-3 months (chronic pain/CP) and persistence of pain a year (persistent pain/PP) after surgery...
March 27, 2017: European Journal of Pain: EJP
https://www.readbyqxmd.com/read/28346758/commentary-distillation-and-element-based-design-of-psychological-treatments-in-global-mental-health-a-commentary-on-brown-et%C3%A2-al-2017
#19
Daniel Michelson, Vikram Patel
This commentary reflects on the "elements" approach in psychological treatment research, and its specific application to a systematic review of psychosocial interventions for youth in conflict-affected areas. We discuss three key questions for the field. First, what psychological treatment elements are necessary and/or sufficient to achieve clinically significant change for a given population? Second, how should elements be sequenced to achieve optimal outcomes? Third, what might account for the large heterogeneity observed in psychological treatment trials, other than the constituent practice elements? We conclude by describing a new research programme that aims to develop a transdiagnostic intervention targeting common mental health difficulties among school-going adolescents in India...
April 2017: Journal of Child Psychology and Psychiatry, and Allied Disciplines
https://www.readbyqxmd.com/read/28346737/easl-and-aasld-recommendations-for-the-diagnosis-of-hcc-to-the-test-of-daily-practice
#20
Christophe Aubé, Frederic Oberti, Julie Lonjon, Georges Pageaux, Olivier Seror, Giséle N'Kontchou, Agnes Rode, Sylvie Radenne, Christophe Cassinotto, Julien Vergniol, Ivan Bricault, Vincent Leroy, Maxime Ronot, Laurent Castera, Sophie Michalak, Maxime Esvan, Valérie Vilgrain
AIM: To evaluate the diagnostic performance of CT, MRI, and CEUS alone and in combination, for the diagnosis of HCC between 10 and 30 mm, in a large population of cirrhotic patients. PATIENTS AND METHODS: In a multicentre prospective trial, 442 patients have been enrolled. Within a month CEUS, CT and MRI were performed for all patients. A composite algorithm was defined to obtain the more accurate gold standard. RESULTS: 544 nodules in 381 patients have been retained for the performance analysis...
March 27, 2017: Liver International: Official Journal of the International Association for the Study of the Liver
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