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https://www.readbyqxmd.com/read/29150770/population-in-vitro-in-vivo-pharmacokinetic-model-of-first-pass-metabolism-itraconazole-and-hydroxy-itraconazole
#1
Ahmad Y Abuhelwa, Stuart Mudge, Richard N Upton, David J R Foster
The aim of this study was to develop a population in vitro-in vivo pharmacokinetic model that simultaneously describe the absorption and accumulation kinetics of itraconazole (ICZ) and hydroxy-itraconazole (HICZ) in healthy subjects. The model integrated meta-models of gastrointestinal pH and gastrointestinal transit time and in vitro dissolution models of ICZ with the absorption and disposition kinetics of ICZ and HICZ. Mean concentration intravenous data, and single- and multi-dose oral data were used for model development...
November 17, 2017: Journal of Pharmacokinetics and Pharmacodynamics
https://www.readbyqxmd.com/read/29150543/toxicokinetics-and-physiologically-based-pharmacokinetic-modeling-of-the-shellfish-toxin-domoic-acid-in-nonhuman-primates
#2
Jing Jing, Rebekah Petroff, Sara Shum, Brenda Crouthamel, Ariel R Topletz, Kimberly S Grant, Thomas M Burbacher, Nina Isoherranen
Domoic acid (DA), a neurotoxin, is produced by marine algae and has caused toxications worldwide in animals and humans. However, the toxicokinetics of DA has not been fully evaluated, and information is missing on the disposition of DA following oral exposures at doses that are considered safe for human consumption. In this study, toxicokinetics of DA were investigated in cynomolgus monkeys, following single doses of 5 µg/kg DA iv, 0.075 mg/kg DA po and 0.15 mg/kg DA po. Following iv dosing, DA had a systemic clearance of 124 ± 71 ml/hr/kg, volume of distribution at steady state of 131±71 ml/kg and elimination half-life of 1...
November 17, 2017: Drug Metabolism and Disposition: the Biological Fate of Chemicals
https://www.readbyqxmd.com/read/29149948/knowledge-and-attitudes-toward-organ-donation-in-health-care-undergraduate-students-in-italy
#3
F Fontana, M Massari, L Giovannini, G Alfano, G Cappelli
INTRODUCTION: The number of organ donors in Italy is increasing, but with still disappointing living donation activity and relatively frequent objection by potential deceased donors' relatives to organ recovery. Few studies have assessed health care students' knowledge and attitude on donation. METHODS: We administered a questionnaire to medical (MS) and nursing students (NS) at University of Modena and Reggio Emilia, Italy, and 749 students (406 MS and 343 NS) completed the questionnaire...
November 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/29149870/first-case-report-of-cohen-syndrome-in-the-tunisian-population-caused-by-vps13b-mutations
#4
Imen Rejeb, Houweyda Jilani, Yasmina Elaribi, Syrine Hizem, Lamia Hila, Julia Lauer Zillahrdt, Jamel Chelly, Lamia Benjemaa
BACKGROUND: Cohen syndrome is a rare autosomal recessive developmental disorder that comprises variable clinical features counting developmental delay, pigmentary retinopathy, myopia, acquired microcephaly, truncal obesity, joint hypermobility, friendly disposition and intermittent neutropenia. VPS13B (vacuolar protein sorting 13, yeast, homologue of B) gene is the only gene responsible for Cohen Syndrome, causative mutations include nonsense, missense, indel and splice-site variants...
November 17, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/29149850/a-cross-sectional-examination-of-psychological-distress-positive-mental-health-and-their-predictors-in-medical-students-in-their-clinical-clerkships
#5
Inge van Dijk, Peter L B J Lucassen, Chris van Weel, Anne E M Speckens
BACKGROUND: Medical students can experience the transition from theory to clinical clerkships as stressful. Scientific literature on the mental health of clinical clerkship students is scarce and mental health is usually defined as absence of psychological distress without assessing psychological, emotional and social wellbeing, together called 'positive mental health'. This cross-sectional study examines the prevalence of psychological distress and positive mental health and explores possible predictors in a Dutch sample of clinical clerkship students...
November 17, 2017: BMC Medical Education
https://www.readbyqxmd.com/read/29146922/molecular-definition-of-multiple-sites-of-antibody-inhibition-of-malaria-transmission-blocking-vaccine-antigen-pfs25
#6
Stephen W Scally, Brandon McLeod, Alexandre Bosch, Kazutoyo Miura, Qi Liang, Sean Carroll, Sini Reponen, Ngan Nguyen, Eldar Giladi, Sebastian Rämisch, Vidadi Yusibov, Allan Bradley, Franck Lemiale, William R Schief, Daniel Emerling, Paul Kellam, C Richter King, Jean-Philippe Julien
The Plasmodium falciparum Pfs25 protein (Pfs25) is a leading malaria transmission-blocking vaccine antigen. Pfs25 vaccination is intended to elicit antibodies that inhibit parasite development when ingested by Anopheles mosquitoes during blood meals. The Pfs25 three-dimensional structure has remained elusive, hampering a molecular understanding of its function and limiting immunogen design. We report six crystal structures of Pfs25 in complex with antibodies elicited by immunization via Pfs25 virus-like particles in human immunoglobulin loci transgenic mice...
November 16, 2017: Nature Communications
https://www.readbyqxmd.com/read/29146417/association-between-percutaneous-hemodynamic-support-device-and-survival-from-cardiac-arrest-in-the-state-of-michigan
#7
Andrew Pressman, Kelly N Sawyer, William Devlin, Robert Swor
INTRODUCTION: The role of circulatory support in the post-cardiac arrest period remains controversial. Our objective was to investigate the association between treatment with a percutaneous hemodynamic support device and outcome after admission for cardiac arrest. METHODS: We performed a retrospective study of adult patients with admission diagnosis of cardiac arrest or ventricular fibrillation (VF) from the Michigan Inpatient Database, treated between July 1, 2010, and June 30, 2013...
October 17, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29145942/teachers-dispositional-mindfulness-and-the-quality-of-their-relationships-with-children-in-head-start-classrooms
#8
Brandon D Becker, Kathleen C Gallagher, Robert C Whitaker
The quality of teachers' relationships with children is a key predictor of children's later social emotional competence and academic achievement. Interventions to increase mindfulness among teachers have focused primarily on the impacts on teachers' subjective well-being, but not on the quality of their relationships with children. Furthermore, none of these interventions have involved preschool teachers. To consider the potential of mindfulness-based interventions to improve the quality of teachers' relationships with preschool-aged children, we examined data from an online survey of 1001 classroom teachers in 37 Pennsylvania Head Start Programs...
December 2017: Journal of School Psychology
https://www.readbyqxmd.com/read/29145917/short-term-effects-of-the-empathic-talk-the-role-of-perceived-empathy-interpersonal-dispositions-and-vagal-tone-on-experiencing-depth
#9
Michele Dufey, Juan Enrique Wilson
The present study examines the immediate impact of empathic attitudes on the receiver, by comparing an empathic conversation (EC) with a neutral one (NC) on experiencing depth (EXP), perceived empathy and vagal tone. We also evaluate if empathy effects depend on personality dispositions relevant to interpersonal functioning. An experimental, counterbalanced, within-subject design was implemented wherein participants (n = 27, age M = 22.6, SD = 4.0, 52% females) talked about a personal, meaningful topic for 20 minutes under both the EC and NC conditions...
November 17, 2017: Spanish Journal of Psychology
https://www.readbyqxmd.com/read/29145614/methionine-and-choline-deficient-mcd-model-in-predicting-adverse-drug-reactions-in-human-nash
#10
Hui Li, Erica Toth, Nathan J Cherrington
In the past few decades, great conceptual and technological advances have been made in the field of toxicology, but animal model-based research still remains one of the most widely-used and readily available tools for furthering our current knowledge. However, animal models are not perfect in predicting all systemic toxicity in humans. Extrapolating animal data to accurately predict human toxicities remains a challenge, and researchers are obligated to question the appropriateness of their chosen animal model...
November 14, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/29144552/simultaneous-determination-of-tilianin-and-its-metabolites-in-mice-using-ultra-high-performance-liquid-chromatography-with-tandem-mass-spectrometry-and-its-application-to-a-pharmacokinetic-study
#11
Liping Wang, Qingwei Chen, Lijun Zhu, Xuejun Zeng, Qiang Li, Ming Hu, Xinchun Wang, Zhongqiu Liu
Tilianin is an active flavonoid glycoside found in many medical plants. Data are lacking regarding its pharmacokinetics and disposition in vivo. The objective of this study was to develop a sensitive, reliable, and validated ultra-high-performance liquid chromatography with tandem mass spectrometry (UHPLC-MS/MS) method to simultaneously quantify tilianin and its main metabolites and to determine its pharmacokinetics in wild-type and breast cancer resistance protein knockout (Bcrp1-/-) FVB mice. Chromatographic separation was accomplished on a C18 column by utilizing acetonitrile and 0...
November 16, 2017: Biomedical Chromatography: BMC
https://www.readbyqxmd.com/read/29143252/infertility-centrality-in-the-woman-s-identity-and-goal-adjustment-predict-psychological-adjustment-among-women-in-ongoing-fertility-treatments
#12
Efrat Neter, Shira Goren
PURPOSE: Some of the women that go through repeated fertility treatments will not adjust well to the treatments and will experience increased distress. The present study examined how centrality of the fertility problem in the woman's identity and dispositional goal adjustment (disengagement and reengagement) are associated with the woman's psychological adjustment. These issues are examined in a context of a pro-natal society (Israel) where parenthood is a major life goal. METHODS: One hundred ninety-three women in ongoing fertility treatments filled out questionnaires, and follow-up on their psychological well-being was carried out after 3 months (N = 130)...
November 15, 2017: International Journal of Behavioral Medicine
https://www.readbyqxmd.com/read/29142796/impact-of-depression-on-hospitalization-and-related-outcomes-for-parkinson-s-disease-patients-a-nationwide-inpatient-sample-based-retrospective-study
#13
Rikinkumar S Patel, Ramkrishna Makani, Zeeshan Mansuri, Upenkumar Patel, Rupak Desai, Amit Chopra
Background Major Depressive Disorder (MDD) is a common comorbidity that significantly affects the quality of life and disease outcomes in Parkinson's disease (PD) patients. No studies have been conducted to our knowledge to address the health care utilization and its outcomes in these patients. The aim of this study is to analyze and discern the differences in the hospitalization outcomes, comorbid conditions, and utilization of procedures in PD patients versus patients with comorbid MDD. Methods We used the Nationwide Inpatient Sample from the Healthcare Cost and Utilization Project from year's 2010-2014...
September 3, 2017: Curēus
https://www.readbyqxmd.com/read/29140565/visualization-and-modeling-of-the-in-vivo-distribution-of-mesenchymal-stem-cells
#14
Haolu Wang, Camilla A Thorling, Zhi Ping Xu, Darrell H G Crawford, Xiaowen Liang, Xin Liu, Michael S Roberts
This unit describes a protocol for elucidating the in vivo disposition of administered mesenchymal stem cells (MSCs). Specifically, direct visualization of donor cell spatiotemporal distribution and assessment of donor cell quantity in recipient organs are described. Protocols for data analysis are suggested, with the goal of developing a model to characterize and predict the physiological kinetics of administered MSCs. The use of this model is described, suggesting that it can be applied to abnormal conditions and has potential interspecies and inter-route predictive capability...
November 15, 2017: Current Protocols in Stem Cell Biology
https://www.readbyqxmd.com/read/29139145/pharmacokinetic-assessment-of-the-monepantel-plus-oxfendazole-combined-administration-in-dairy-cows
#15
M Ballent, P Viviani, F Imperiale, P Dominguez, S Halwachs, H Mahnke, W Honscha, C Lanusse, G Virkel, A Lifschitz
Monepantel (MNP) is a novel anthelmintic compound launched into the veterinary pharmaceutical market. MNP is not licenced for use in dairy animals due to the prolonged elimination of its metabolite monepantel sulphone (MNPSO2 ) into milk. The goal of this study was to evaluate the presence of potential in vivo drug-drug interactions affecting the pattern of milk excretion after the coadministration of the anthelmintics MNP and oxfendazole (OFZ) to lactating dairy cows. The concentrations of both parent drugs and their metabolites were measured in plasma and milk samples by HPLC...
November 15, 2017: Journal of Veterinary Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/29137906/can-different-physicians-providing-urgent-and-non-urgent-treatment-improve-patient-flow-in-emergency-department
#16
Flora Fei-Fei Yau, Tsung-Cheng Tsai, Yan-Ren Lin, Kuan-Han Wu, Yuan-Jhen Syue, Chao-Jui Li
BACKGROUND: Emergency Department (ED) overcrowding is a worldwide problem, and it might be caused by prolonged patient stay in the ED. This study tried to analyze if different practice models influence patient flow in the ED. MATERIALS AND METHODS: A retrospective, 1-year cohort study was conducted across two EDs in the largest healthcare system in Taiwan. A total of 37,580 adult non-trauma patients were involved in the study. The clinical practice between two ED practice models was compared...
November 6, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29136314/syncope-prognosis-based-on-emergency-department-diagnosis-a-prospective-cohort-study
#17
Cristian Toarta, Muhammad Mukarram, Kirtana Arcot, Soo-Min Kim, Sarah Gaudet, Marco L A Sivilotti, Brian H Rowe, Venkatesh Thiruganasambandamoorthy
OBJECTIVE: Relatively little is known about outcomes after disposition among syncope patients assigned various diagnostic categories during emergency department (ED) evaluation. We sought to measure the outcomes among these groups within 30 days of the initial ED visit. METHODS: We prospectively enrolled adult syncope patients at six EDs and excluded patients with pre-syncope, persistent mental status changes, intoxication, seizure, and major trauma. Patient characteristics, ED management, diagnostic impression (presumed vasovagal, orthostatic, cardiac, or other/unknown) at the end of the ED visit and physicians' confidence in assigning the etiology were collected...
November 14, 2017: Academic Emergency Medicine: Official Journal of the Society for Academic Emergency Medicine
https://www.readbyqxmd.com/read/29135904/patient-factors-associated-with-the-decision-to-transfer-adult-patients-from-a-pediatric-emergency-department-for-definitive-care
#18
Aaron E Kornblith, Ashley A Foster, Christine S Cho, Ralph C Wang, David M Jaffe
OBJECTIVE: Adults presenting to pediatric emergency departments are transferred to general emergency departments in proportions between 20% and 60%. How illness severity is related to the decision to transfer is poorly understood. We compared the proportion of adults with emergent and nonemergent conditions with respect to their final disposition. We also determined characteristics associated with transfer. METHODS: We conducted a retrospective review of the electronic medical record and identified all patients 25 years and older presenting to a large urban freestanding pediatric emergency department from 2008 to 2013...
November 14, 2017: Pediatric Emergency Care
https://www.readbyqxmd.com/read/29135522/determinants-of-long-term-neurological-recovery-patterns-relative-to-hospital-discharge-among-cardiac-arrest-survivors
#19
Sachin Agarwal, Alex Presciutti, William Roth, Elizabeth Matthews, Ashley Rodriguez, David J Roh, Soojin Park, Jan Claassen, Ronald M Lazar
OBJECTIVE: To explore factors associated with neurological recovery at 1 year relative to hospital discharge after cardiac arrest. DESIGN: Observational, retrospective review of a prospectively collected cohort. SETTING: Medical or surgical ICUs in a single tertiary care center. PATIENTS: Older than 18 years, resuscitated following either in-hospital or out-of-hospital cardiac arrest and considered for targeted temperature management between 2007 and 2013...
November 10, 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/29135439/biological-cleavage-of-the-c-p-bond-in-perfluoroalkyl-phosphinic-acids-in-male-sprague-dawley-rats-and-the-formation-of-persistent-and-reactive-metabolites
#20
Shira Joudan, Leo W Y Yeung, Scott A Mabury
BACKGROUND: Perfluoroalkyl phosphinic acids (PFPiAs) have been detected in humans, wildlife, and various environmental matrices. These compounds have been used with perfluoroalkyl phosphonic acids (PFPAs) as surfactants in consumer products and as nonfoaming additives in pesticide formulations. Unlike the structurally related perfluoroalkyl sulfonic and carboxylic acids, little is known about the biological fate of PFPiAs. OBJECTIVES: We determined the biotransformation products of PFPiAs and some pharmacokinetic parameters in a rat model...
November 3, 2017: Environmental Health Perspectives
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