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https://www.readbyqxmd.com/read/29656357/monitoring-oh-pcbs-in-pcb-transport-worker-s-urine-as-a-non-invasive-exposure-assessment-tool
#1
Yuki Haga, Motoharu Suzuki, Chisato Matsumura, Toshihiro Okuno, Masahiro Tsurukawa, Kazuo Fujimori, Narayanan Kannan, Roland Weber, Takeshi Nakano
In this study, we analyzed hydroxylated polychlorinated biphenyls (OH-PCBs) in urine of both PCB transport workers and PCB researchers. A method to monitor OH-PCB in urine was developed. Urine was solid-phase extracted with 0.1% ammonia/ methanol (v/v) and glucuronic acid/sulfate conjugates and then decomposed using β-glucuronidase/arylsulfatase. After alkaline digestion/derivatization, the concentration of OH-PCBs was determined by HRGC/HRMS-SIM. In the first sampling campaign, the worker's OH-PCB levels increased several fold after the PCB waste transportation work, indicating exposure to PCBs...
April 14, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29655989/in-vivo-migration-of-mesenchymal-stem-cells-to-burn-injury-sites-and-their-therapeutic-effects-in-a-living-mouse-model
#2
Eun Jung Oh, Ho Won Lee, Senthilkumar Kalimuthu, Tae Jung Kim, Hyun Mi Kim, Se Hwan Baek, Liya Zhu, Ji Min Oh, Seung Hyun Son, Ho Yun Chung, Byeong-Cheol Ahn
Mesenchymal stem cell (MSC)-based therapy has emerged as a promising therapeutic strategy for tissue regeneration and repair. In this study, we non-invasively monitored the tracking of MSCs toward burn injury sites using MSCs expressing firefly luciferase (Fluc) gene in living mice, and evaluated the effects of the MSCs at the injury site. Murine MSCs co-expressing Fluc and green fluorescent protein (GFP) were established using a retroviral system (referred to as MSC/Fluc). To evaluate the ability of MSC migration toward burn injury sites, cutaneous burn injury was induced in the dorsal skin of mice...
April 12, 2018: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/29655492/isolated-acute-appendicitis-caused-by-aspergillus-in-a-patient-who-underwent-lung-transplantation-a-case-report
#3
H S Kim, H J Yeo, D H Shin, W H Cho, D Kim
Invasive aspergillosis is an important cause of morbidity and mortality in patients who have undergone lung transplantation. Aspergillus infections usually involve the respiratory tract, with vascular invasion and subsequent dissemination. However, acute appendicitis associated with localized aspergillosis is rare, especially among patients who have undergone prophylaxis with voriconazole. We present a case of primary Aspergillus appendicitis diagnosed by histologic examination in a patient who underwent lung transplantation...
April 11, 2018: Transplantation Proceedings
https://www.readbyqxmd.com/read/29652967/-pharmacokinetics-of-posaconazol-in-the-prophylaxis-and-treatment-of-invasive-fungal-infection-in-immunocompromised-children-in-a-pediatric-hospital
#4
Romina Valenzuela, Patricio García, Marlon Barraza, Julia Palma, Paula Catalán, M Elena Santolaya, J Pablo Torres, Jorge Morales
Background There is no consensus on the optimal dosage use of posaconazole (PSC) for invasive fungal infection (IFI) in pediatric patients and normally it is adjusted with drug levels (DLs) ≥ 0.7 μg/ml and ≥ 1.25 μg/ml for prophylaxis and treatment, respectively. Objective To describe the experience of monitoring DLs of PSC in immunocompromised pediatric patients with IFI and to determine if the recommended doses reach CP effective in prophylaxis (≥ 0.7 μg/mL) and treatment (≥ 1.25 μg/mL). Method A retrospective analysis in children who received PSC from January 2012 to October 2016, in the Oncology and Bone Marrow Transplant units at Hospital Calvo Mackenna was done Six patients with 78 DLs were reviewed (4 prophylaxis and 4 treatment)...
2018: Revista Chilena de Infectología: órgano Oficial de la Sociedad Chilena de Infectología
https://www.readbyqxmd.com/read/29652902/relations-between-right-ventricular-morphology-and-clinical-electrical-and-genetic-parameters-in-brugada-syndrome
#5
Belinda Gray, Ganesh Kumar Gnanappa, Richard D Bagnall, Giuseppe Femia, Laura Yeates, Jodie Ingles, Charlotte Burns, Rajesh Puranik, Stuart M Grieve, Christopher Semsarian, Raymond W Sy
BACKGROUND: Increasing evidence suggests the presence of structural changes affecting the right ventricular outflow tract (RVOT) in patients with Brugada Syndrome (BrS). The aim of this study was to characterise the RV morphology in BrS and explore associations between morphologic, clinical, electrical, and genetic parameters using non-invasive multimodality testing. METHODS: Consecutive BrS patients (recruited 2013-2015) underwent clinical assessment, dedicated RV imaging using cardiac magnetic resonance (CMR) imaging (unless contra-indicated), electrical assessment (electrocardiogram, Holter monitoring, signal-averaged ECG[SAECG]) and genotyping...
2018: PloS One
https://www.readbyqxmd.com/read/29652271/prophylactic-preoperative-levosimendan-for-off-pump-coronary-artery-bypass-grafting-in-patients-with-left-ventricular-dysfunction-single-centered-randomized-prospective-study
#6
Pushkar Mahendra Desai, Manjula S Sarkar, Sanjeeta R Umbarkar
Background: Off-pump coronary artery bypass surgery (OPCAB) is often complicated by hemodynamic instability, especially in patients with prior left ventricular (LV) dysfunction and appropriate choice of inotrope plays a vital role in perioperative management of these patients. Aim and Objective: To study hemodynamic effects and immediate outcome of prophylactic infusion of levosimendan in patients with the LV dysfunction undergoing OPCAB surgery and whether this strategy helps in successful conduct of OPCAB surgery...
April 2018: Annals of Cardiac Anaesthesia
https://www.readbyqxmd.com/read/29652111/actual-diagnosis-of-helicobacter-pylori-infection
#7
Philippe Lehours
Helicobacter pylori colonizes the stomach of half of humanity. The prevalence of this infection is higher among people of low socioeconomic status and from developing countries. In the absence of effective antibiotic treatment, the infection persists decades or even lifetime. The diagnosis of H. pylori can be made by invasive methods when biopsies are obtained: culture, histological examination, polymerase chain reaction or rapid urease test. Non-invasive methods have been developed, including the urea breath test, a test of high reliability, particularly suitable for post treatment monitoring, but also the fecal antigen test, as well as the detection of antibodies in the serum...
April 12, 2018: Minerva Gastroenterologica e Dietologica
https://www.readbyqxmd.com/read/29651825/feasibility-of-using-optical-coherence-tomography-to-detect-acute-radiation-induced-esophageal-damage-in-small-animal-models
#8
Pouya Jelvehgaran, Daniel Martijn de Bruin, F Javier Salguero, Gerben Roelof Borst, Ji-Ying Song, Ton G van Leeuwen, Johannes F de Boer, Tanja Alderliesten, Marcel van Herk
Lung cancer survival is poor, and radiation therapy patients often suffer serious treatment side effects. The esophagus is particularly sensitive leading to acute radiation-induced esophageal damage (ARIED). We investigated the feasibility of optical coherence tomography (OCT) for minimally invasive imaging of the esophagus with high resolution (10  μm) to detect ARIED in mice. Thirty mice underwent cone-beam computed tomography imaging for initial setup assessment and dose planning followed by a single-dose delivery of 4...
April 2018: Journal of Biomedical Optics
https://www.readbyqxmd.com/read/29651820/seroprevalence-of-opsonophagocytic-antibodies-against-serotype-ia-ib-ii-iii-and-v-group-b-streptococcus-among-korean-population
#9
Ji Hyen Lee, Han Wool Kim, Kyung Hyo Kim
BACKGROUND: Invasive Streptococcus agalactiae (group B streptococcus, GBS) infection most commonly occurs in infants; however, cases of GBS infection in adults, particularly in the elderly with significant underlying diseases, are being increasingly reported. We analyzed the serotype specific opsonophagocytic antibodies (the major mechanism of protection against GBS) in infants, adults, and the elderly. METHODS: The opsonization indices (OIs) of antibodies against serotype Ia, Ib, II, III, and V GBS were studied in 89 infants, 35 adults (age, 30-50 years), and 62 elderly individuals (age, 65-85 years) according to the University of Alabama at Birmingham GBS opsonophagocytic killing assay protocol (www...
April 16, 2018: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/29651786/the-why-when-and-how-to-test-for-obstructive-sleep-apnea-in-patients-with-atrial-fibrillation
#10
REVIEW
Lien Desteghe, Jeroen M L Hendriks, R Doug McEvoy, Ching Li Chai-Coetzer, Paul Dendale, Prashanthan Sanders, Hein Heidbuchel, Dominik Linz
Sleep apnea is associated with increased cardiovascular risk and may be important in atrial fibrillation (AF) management. It is present in up to 62% of the AF population and is highly under-recognized and underdiagnosed. Obstructive sleep apnea (OSA) is strongly associated with AF and non-randomized trials have shown that its treatment can help to reduce AF recurrences and maintain sinus rhythm. The 2016 European Society of Cardiology guidelines for the management of AF recommend that AF patients should be questioned regarding the symptoms of OSA and that OSA-treatment should be optimized to improve AF treatment results...
April 12, 2018: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
https://www.readbyqxmd.com/read/29651661/high-arctic-lemmings-remain-reproductively-active-under-predator-induced-elevated-stress
#11
Dominique Fauteux, Gilles Gauthier, Dominique Berteaux, Rupert Palme, Rudy Boonstra
Non-consumptive effects of predation have rarely been assessed in wildlife populations even though their impact could be as important as lethal effects. Reproduction of individuals is one of the most important demographic parameters that could be affected by predator-induced stress, which in turn can have important consequences on population dynamics. We studied non-consumptive effects of predation on the reproductive activity (i.e., mating and fertilization) of a cyclic population of brown lemmings exposed to intense summer predation in the Canadian High Arctic...
April 12, 2018: Oecologia
https://www.readbyqxmd.com/read/29651384/cell-free-dna-integrity-for-the-monitoring-of-breast-cancer-future-perspectives
#12
REVIEW
Navid Sobhani, Daniele Generali, Fabrizio Zanconati, Marina Bortul, Bruna Scaggiante
Breast cancer (BC) is the most common cancer and the second cause of death in women worldwide. Therapeutic options are increasing, but the response to treatments is not always efficient and the risk of recurrence covers decades. In this perspective, the need to have a proper follow-up for the therapeutic responses and for anticipating recurrence it is urgent in the clinical setting. Liquid biopsy provides the basic principle for a non-invasive method for the routinely monitoring of BC. However, due to the heterogeneity of tumors during onset and progression, the search for tumor DNA mutations of targeted genes in plasma/serum is a limiting factor...
April 10, 2018: World Journal of Clinical Oncology
https://www.readbyqxmd.com/read/29650383/probing-ion-channel-structure-and-function-using-light-sensitive-amino-acids
#13
REVIEW
Viktoria Klippenstein, Laetitia Mony, Pierre Paoletti
Approaches to remotely control and monitor ion channel operation with light are expanding rapidly in the biophysics and neuroscience fields. A recent development directly introduces light sensitivity into proteins by utilizing photosensitive unnatural amino acids (UAAs) incorporated using the genetic code expansion technique. The introduction of UAAs results in unique molecular level control and, when combined with the maximal spatiotemporal resolution and poor invasiveness of light, enables direct manipulation and interrogation of ion channel functionality...
April 10, 2018: Trends in Biochemical Sciences
https://www.readbyqxmd.com/read/29650267/virtual-touch-tissue-quantification-for-assessing-renal-pathology-in-idiopathic-nephrotic-syndrome
#14
Xue Yang, Ning Yu, Jing Yu, Hongqiao Wang, Xiumei Li
The aim of this study was to evaluate Virtual Touch tissue quantification in assessing renal interstitial fibrosis in patients with idiopathic nephrotic syndrome. Ninety patients with idiopathic nephrotic syndrome were assigned to mild, moderate and severe groups depending on the degree of renal interstitial fibrosis on histopathologic examination of renal biopsy specimens. Thirty healthy patients were also selected as the control group. Virtual Touch tissue quantification was performed to measure the shear wave velocity of the renal parenchyma...
April 9, 2018: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/29650001/prediction-of-autonomic-dysreflexia-during-urodynamics-a-prospective-cohort-study
#15
Matthias Walter, Stephanie C Knüpfer, Jacquelyn J Cragg, Lorenz Leitner, Marc P Schneider, Ulrich Mehnert, Andrei V Krassioukov, Martin Schubert, Armin Curt, Thomas M Kessler
BACKGROUND: Autonomic dysreflexia is a severe and potentially life-threatening condition in patients with spinal cord injury, as it can lead to myocardial ischemia, brain hemorrhage, or even death. Urodynamic investigation is the gold standard to assess neurogenic lower urinary tract dysfunction due to spinal cord injury and reveal crucial pathological findings, such as neurogenic detrusor overactivity. However, neurogenic detrusor overactivity and urodynamic investigation are known to be leading triggers of autonomic dysreflexia...
April 13, 2018: BMC Medicine
https://www.readbyqxmd.com/read/29649968/swimming-exercise-to-control-precocious-maturation-in-male-seabass-dicentrarchus-labrax
#16
Marco Graziano, Raul Benito, Josep V Planas, Arjan P Palstra
BACKGROUND: Male European seabass, already predominant (~ 70%) in cultured stocks, show a high incidence (20-30%) of precocious sexual maturation under current aquaculture practices, leading to important economic losses for the industry. In view of the known modulation of reproductive development by swimming exercise in other teleost species, we aimed at investigating the effects of sustained swimming on reproductive development in seabass males during the first year of life in order to determine if swimming could potentially reduce precocious sexual maturation...
April 12, 2018: BMC Developmental Biology
https://www.readbyqxmd.com/read/29649700/detailed-spectral-profile-analysis-of-electrocorticograms-during-freezing-against-penicillin-induced-epileptiform-discharges-in-the-anesthetized-rat
#17
Tatsuji Tokiwa, Lev Zimin, Takao Inoue, Sadahiro Nomura, Michiyasu Suzuki, Takeshi Yamakawa
OBJECTIVES: Cryosurgery is an alternative technique for minimally invasive treatment of lesions. We have recently examined cryosurgery for epilepsy in animal models, and found that penicillin G (PG)-induced epileptiform discharges (EDs) mostly vanished after freezing. However, EDs were provoked again after insufficient freezing. Inadequate freezing is not visually detectable during and just after freezing and is not predictable beforehand. To manage this problem, we examined whether intraoperative monitoring of electrocorticograms (ECoGs) can predict recurrence of EDs after cryosurgery...
March 29, 2018: Epilepsy Research
https://www.readbyqxmd.com/read/29648550/continuous-real-time-breath-analysis-in-ruminants-effect-of-eructation-on-exhaled-voc-profiles
#18
Peter Oertel, Anne Küntzel, Petra Reinhold, Heike Köhler, Jochen Schubert, Johann Kolb, Wolfram Miekisch
The analysis of volatile organic compounds (VOCs) allows non-invasive investigations of diseases. Animal studies are conducted as a model to perform research of VOCs and their relation to diseases. In large animal models ruminants were often used as experimental animal. The effect of their physiological eructation on VOC exhalation has not been examined yet and is the objective of this study.
 Methods: Continuous breath profiles of 2 young cattle, 4 adult goats and 4 adult sheep were measured through a mask, covering mouth and nose, in real-time (200 ms) by means of PTR-TOF-MS...
April 12, 2018: Journal of Breath Research
https://www.readbyqxmd.com/read/29644453/analysis-of-factors-predicting-surgical-intervention-and-associated-costs-in-pediatric-breast-masses-a-single-center-study
#19
E Graham Englert, Guillermo Ares, Andrea Henricks, Karen Rychlik, Catherine J Hunter
PURPOSE: Finding a breast mass in a child provokes apprehension in parents, especially in those with a family history of breast cancer. Clinicians must decide between serial imaging or biopsy of the mass. Herein, we identify management differences in those with and without a positive family history, as well as identify cost differences. METHODS: An institutional retrospective review was performed of patients (2-18 years of age) with a diagnosis of breast mass...
April 11, 2018: Pediatric Surgery International
https://www.readbyqxmd.com/read/29644098/hydrogel-based-scaffolds-to-support-intrathecal-stem-cell-transplantation-as-a-gateway-to-the-spinal-cord-clinical-needs-biomaterials-and-imaging-technologies
#20
REVIEW
J Miguel Oliveira, Luisa Carvalho, Joana Silva-Correia, Sílvia Vieira, Malgorzata Majchrzak, Barbara Lukomska, Luiza Stanaszek, Paulina Strymecka, Izabela Malysz-Cymborska, Dominika Golubczyk, Lukasz Kalkowski, Rui L Reis, Miroslaw Janowski, Piotr Walczak
The prospects for cell replacement in spinal cord diseases are impeded by inefficient stem cell delivery. The deep location of the spinal cord and complex surgical access, as well as densely packed vital structures, question the feasibility of the widespread use of multiple spinal cord punctures to inject stem cells. Disorders characterized by disseminated pathology are particularly appealing for the distribution of cells globally throughout the spinal cord in a minimally invasive fashion. The intrathecal space, with access to a relatively large surface area along the spinal cord, is an attractive route for global stem cell delivery, and, indeed, is highly promising, but the success of this approach relies on the ability of cells (1) to survive in the cerebrospinal fluid (CSF), (2) to adhere to the spinal cord surface, and (3) to migrate, ultimately, into the parenchyma...
2018: NPJ Regenerative Medicine
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