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https://www.readbyqxmd.com/read/28918602/population-pharmacokinetics-and-optimal-sampling-strategy-for-model-based-precision-dosing-of-melphalan-in-patients-undergoing-hematopoietic-stem-cell-transplantation
#1
Kana Mizuno, Min Dong, Tsuyoshi Fukuda, Sharat Chandra, Parinda A Mehta, Scott McConnell, Elias J Anaissie, Alexander A Vinks
BACKGROUND: High-dose melphalan is an important component of conditioning regimens for patients undergoing hematopoietic stem cell transplantation. The current dosing strategy based on body surface area results in a high incidence of oral mucositis and gastrointestinal and liver toxicity. Pharmacokinetically guided dosing will individualize exposure and help minimize overexposure-related toxicity. OBJECTIVE: The purpose of this study was to develop a population pharmacokinetic model and optimal sampling strategy...
September 16, 2017: Clinical Pharmacokinetics
https://www.readbyqxmd.com/read/28918601/effects-of-phoxim-induced-hepatotoxicity-on-sd-rats-and-the-protection-of-vitamin-e
#2
Jing Zhang, Wentao Song, Yuecheng Sun, Anshan Shan
Currently, public pay more attention to the adverse effect of organophosphate pesticides on human and animal health and on the environment in developing nations. Vitamin E may protect the hepatocyte and increase the function of liver. The study was to investigate the effects of phoxim-induced hepatotoxicity on Sprague Dawley (SD) rats and the protection of vitamin E. SD rats received by gavage 180 mg kg(-1) (per body weight) of phoxim, 200 mg kg(-1) (per body weight) of vitamin E, and phoxim + vitamin E...
September 16, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28918574/fecal-sludge-management-in-developing-urban-centers-a-review-on-the-collection-treatment-and-composting
#3
Emmanuel Alepu Odey, Zifu Li, Xiaoqin Zhou, Loissi Kalakodio
The problems posed by fecal sludge (FS) are multidimensional because most cities rapidly urbanize, which results in the increase in population, urban settlement, and waste generation. Issues concerning health and waste treatment have continued to create alarming situations. These issues had indeed interfered with the proper steps in managing FS, which contaminates the environment. FS can be used in agriculture as fertilizer because it is an excellent source of nutrients. The recent decline in crop production due to loss of soil organic component, erosion, and nutrient runoff has generated interest in the recycling of FS into soil nutrients through stabilization and composting...
September 16, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28918549/loss-of-lhci-system-affects-lhcii-re-distribution-between-thylakoid-domains-upon-state-transitions
#4
Mauro Bressan, Roberto Bassi, Luca Dall'Osto
LHCI, the peripheral antenna system of Photosystem I, includes four light-harvesting proteins (Lhca1-Lhca4) in higher plants, all of which are devoid in the Arabidopsis thaliana knock-out mutant ΔLhca. PSI absorption cross-section was reduced in the mutant, thus affecting the redox balance of the photosynthetic electron chain and resulting in a more reduced PQ with respect to the wild type. ΔLhca plants developed compensatory response by enhancing LHCII binding to PSI. However, the amplitude of state transitions, as measured from changes of chlorophyll fluorescence in vivo, was unexpectedly low than the high level of PSI-LHCII supercomplex established...
September 16, 2017: Photosynthesis Research
https://www.readbyqxmd.com/read/28918506/young-athletes-after-acl-reconstruction-with-quadriceps-strength-asymmetry-at-the-time-of-return-to-sport-demonstrate-decreased-knee-function-1%C3%A2-year-later
#5
Matthew P Ithurburn, Alex R Altenburger, Staci Thomas, Timothy E Hewett, Mark V Paterno, Laura C Schmitt
PURPOSE: Quadriceps femoris (QF) strength deficits at return-to-sport (RTS) after ACL reconstruction (ACLR) contribute to decreased knee function at the same time point. However, the impact of QF strength at RTS on longitudinal function has not been examined. The purpose of this study was to test the hypothesis that young athletes after ACLR with QF strength asymmetry at RTS would demonstrate decreased knee-related function and lower proportions of functional recovery at 1 year post-RTS compared to young athletes following ACLR with nearly symmetric QF strength at RTS...
September 16, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28918494/betaine-in-the-brain-characterization-of-betaine-uptake-its-influence-on-other-osmolytes-and-its-potential-role-in-neuroprotection-from-osmotic-stress
#6
Leena S Knight, Quinn Piibe, Ian Lambie, Christopher Perkins, Paul H Yancey
Betaine (N-trimethylglycine), a common osmolyte, has received attention because of the number of clinical reports associating betaine supplementation with improved cognition, neuroprotection and exercise physiology. However, tissue analyses report little accumulation of betaine in brain tissue despite the presence of betaine/GABA transporters (BGT1) at the blood brain barrier and in nervous tissue, calling into question whether betaine influences neuronal function directly or indirectly. Therefore, the focus of this study was to determine what capacity nervous tissue has to accumulate betaine, specifically in the hippocampus, a region of the brain associated with learning and memory and one that is particularly susceptible to damage (e...
September 16, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/28918450/clinical-utility-of-the-asdas-index-in-comparison-with-basdai-in-patients-with-ankylosing-spondylitis-axis-study
#7
Agustí Sellas I Fernandez, Xavier Juanola Roura, Alberto Alonso Ruiz, José Rosas, Julio Medina Luezas, Eduardo Collantes Estevez, Miguel Ángel Abad Hernández, Virginia Carrasco Benitez, Cesar Fisac
The objective of the study was to study the clinical utility of the Ankylosing Spondylitis Disease Activity Score (ASDAS) for the assessment of disease activity in ankylosing spondylitis (AS) patients, compared to the Bath Ankylosing Spondylitis Activity Index (BASDAI). This was a prospective longitudinal observational study in patients with AS (NY-modified criteria) from 23 Spanish centers. Physical and analytical data; global, lumbar, and nocturnal pain; ASDAS, BASDAI and minimally acceptable clinical status (PASS) were collected...
September 16, 2017: Rheumatology International
https://www.readbyqxmd.com/read/28918406/rare-cause-of-colonic-intussusception-in-an-adult
#8
Alexander Nissen, Fia Yi
Colonic intussusception is an uncommon phenomenon in adults. Advanced imaging has facilitated the increase in awareness of this rare disease. When present, the lead point is most often secondary to a malignancy with primary adenocarcinoma being the most frequent cause. Current surgical management involves oncologic resections for this reason. This is a report of the third ever-reported case of colonic intussusception secondary to an angiolipoma and the first in the western hemisphere. We also demonstrate that these masses are amenable to minimally invasive resection for definitive management...
September 15, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28918326/a-surrogate-analyte-based-liquid-chromatography-tandem-mass-spectrometry-method-for-the-determination-of-endogenous-cyclic-nucleotides-in-rat-brain
#9
Jie Chen, Ali Tabatabaei, Doug Zook, Yan Wang, Anne Danks, Kathe Stauber
A robust high-performance liquid chromatography tandem mass spectrometry (LC-MS/MS) assay was developed and qualified for the measurement of cyclic nucleotides (cNTs) in rat brain tissue. Stable isotopically labeled 3',5'-cyclic adenosine-(13)C5 monophosphate ((13)C5-cAMP) and 3',5'-cyclic guanosine-(13)C,(15)N2 monophosphate ((13)C(15)N2-cGMP) were used as surrogate analytes to measure endogenous 3',5'-cyclic adenosine monophosphate (cAMP) and 3',5'-cyclic guanosine monophosphate (cGMP). Pre-weighed frozen rat brain samples were rapidly homogenized in 0...
September 14, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28918189/effects-of-temperature-and-peg-grafting-density-on-the-translocation-of-pegylated-nanoparticles-across-asymmetric-lipid-membrane
#10
Zuoheng Zhang, Xubo Lin, Ning Gu
Plasma membrane internalization of nanoparticles (NPs) is important for their biomedical applications such as drug-delivery carriers. On one hand, in order to improve their half-life in circulation, PEGylation has been widely used. However, it may hinder the NPs' membrane internalization ability. On the other hand, higher temperature could enhance the membrane permeability and may affect the NPs' ability to enter into or exit from cells. To make full use of their advantages, we systematically investigated the effects of temperature and PEG density on the translocation of PEGylated nanoparticles across the plasma asymmetric membrane of eukaryotic cells, using near-atom level coarse-grained molecular dynamics simulations...
September 6, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28918141/validation-of-commercial-luminometry-swabs-for-total-bacteria-and-coliform-counts-in-colostrum-feeding-equipment
#11
D L Renaud, D F Kelton, S J LeBlanc, D B Haley, A B Jalbert, T F Duffield
A sufficient quantity and quality of colostrum must be fed quickly to the newborn calf while minimizing bacterial contamination. Adenosine triphosphate bioluminescence swabs offer a potential rapid on-farm alternative to assess bacterial contamination of colostrum. The objective of this study was to validate the Hygiena (Camarillo, CA) AquaSnap Total (AS), SuperSnap (SS), PRO-Clean (PC), and MicroSnap Coliform (MS) swabs as well as visual hygiene assessment for detection of elevated bacterial counts in or on colostrum-feeding equipment...
September 13, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28918110/emergent-behaviors-in-rbcs-flows-in-micro-channels-using-digital-particle-image-velocimetry
#12
F Cairone, D Ortiz, P J Cabrales, M Intaglietta, M Bucolo
The key points in the design of microfluidic Lab-On-a-Chips for blood tests are the simplicity of the microfluidic chip geometry, the portability of the monitoring system and the ease on-chip integration of the data analysis procedure. The majority of those, recently designed, have been used for blood separation, however their introduction, also, for pathological conditions diagnosis would be important in different biomedical contexts. To overcome this lack is necessary to establish the relation between the RBCs flow and blood viscosity changes in micro-vessels...
September 13, 2017: Microvascular Research
https://www.readbyqxmd.com/read/28918109/precision-based-guidelines-for-sub-maximal-normalisation-task-selection-for-trunk-extensor-emg
#13
Jennie A Jackson, Svend Erik Mathiassen, Jack P Callaghan, Patrick G Dempsey
AIM: The object of this study was to quantify the contribution of sub-maximal normalisation to the overall variance of exposure parameters describing erector spinae (ES) activity, and to provide guidelines for task selection which minimize methodological variance. METHODS: ES EMG was measured from three locations (T9, L1 and L5 levels) on fifteen men performing a manual materials handling task in the laboratory on three separate days. Four repeats of each of eleven sub-maximal normalisation tasks (eight static, three dynamic) were collected, work data were normalised to each task and repeat, and exposure parameters calculated...
July 20, 2017: Journal of Electromyography and Kinesiology
https://www.readbyqxmd.com/read/28918102/the-minimal-clinically-important-difference-for-the-rasch-neuropsychiatric-inventory-irritability-and-aggression-scale-for-traumatic-brain-injury
#14
James F Malec, Flora M Hammond
OBJECTIVE: To determine the Minimal Clinically Important Difference (MCID) for a Rasch measure derived from the Irritability/Lability and Agitation/Aggression subscales of the Neuropsychiatric Inventory (NPI-TBI-IA). DESIGN: Distribution-based statistical methods were applied to retrospective data to determine candidates for the MCID. These candidates were evaluated by anchoring the NPI-TBI-IA to Global Impression of Change (GIC) ratings by participants, significant others, and a supervising physician...
September 13, 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28918020/rationally-engineered-aav-capsids-improve-transduction-and-volumetric-spread-in-the-cns
#15
Nicholas M Kanaan, Rhyomi C Sellnow, Sanford L Boye, Ben Coberly, Antonette Bennett, Mavis Agbandje-McKenna, Caryl E Sortwell, William W Hauswirth, Shannon E Boye, Fredric P Manfredsson
Adeno-associated virus (AAV) is the most common vector for clinical gene therapy of the CNS. This popularity originates from a high safety record and the longevity of transgene expression in neurons. Nevertheless, clinical efficacy for CNS indications is lacking, and one reason for this is the relatively limited spread and transduction efficacy in large regions of the human brain. Using rationally designed modifications of the capsid, novel AAV capsids have been generated that improve intracellular processing and result in increased transgene expression...
September 15, 2017: Molecular Therapy. Nucleic Acids
https://www.readbyqxmd.com/read/28918017/efficacy-and-safety-profile-of-tricyclo-dna-antisense-oligonucleotides-in-duchenne-muscular-dystrophy-mouse-model
#16
Karima Relizani, Graziella Griffith, Lucía Echevarría, Faouzi Zarrouki, Patricia Facchinetti, Cyrille Vaillend, Christian Leumann, Luis Garcia, Aurélie Goyenvalle
Antisense oligonucleotides (AONs) hold promise for therapeutic splice-switching correction in many genetic diseases. However, despite advances in AON chemistry and design, systemic use of AONs is limited due to poor tissue uptake and sufficient therapeutic efficacy is still difficult to achieve. A novel class of AONs made of tricyclo-DNA (tcDNA) is considered very promising for the treatment of Duchenne muscular dystrophy (DMD), a neuromuscular disease typically caused by frameshifting deletions or nonsense mutations in the gene-encoding dystrophin and characterized by progressive muscle weakness, cardiomyopathy, and respiratory failure in addition to cognitive impairment...
September 15, 2017: Molecular Therapy. Nucleic Acids
https://www.readbyqxmd.com/read/28917992/securing-extraocular-muscles-in-strabismus-surgery-biomechanical-analysis-of-knot-tying-technique
#17
Steven E Brooks
BACKGROUND: The safe and precise reattachment of extraocular muscles requires a technical approach that minimizes any opportunity for the muscle to slip intraoperatively or postoperatively while minimizing surgical risk. Biomechanical testing can provide important quantitative information about the tensile properties of different knot configurations that may inform surgical technique. METHODS: A precision digital force gauge was used to assess the tensile strength created by different knot tying techniques and configurations in human sclera using 6-0 polyglactin 910 suture...
September 13, 2017: Journal of AAPOS: the Official Publication of the American Association for Pediatric Ophthalmology and Strabismus
https://www.readbyqxmd.com/read/28917988/a-comprehensive-screening-platform-for-aerosolizable-protein-formulations-for-intranasal-and-pulmonary-drug-delivery
#18
Martina Röhm, Stefan Carle, Frank Maigler, Johannes Flamm, Viktoria Kramer, Chrystelle Mavoungou, Otmar Schmid, Katharina Schindowski
Aerosolized administration of biopharmaceuticals to the airways is a promising route for nasal and pulmonary drug delivery, but - in contrast to small molecules - little is known about the effects of aerosolization on safety and efficacy of biopharmaceuticals. Proteins are sensitive against aerosolization-associated shear stress. Tailored formulations can shield proteins and enhance permeation, but formulation development requires extensive screening approaches. Thus, the aim of this study was to develop a cell-based in vitro technology platform that includes screening of protein quality after aerosolization and transepithelial permeation...
September 13, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28917981/intranasal-insulin-treatment-alleviates-methamphetamine-induced-anxiety-like-behavior-and-neuroinflammation
#19
Elmira Beirami, Shahrbanoo Oryan, Seyedeh Masoumeh Seyedhoseini Tamijani, Abolhassan Ahmadiani, Leila Dargahi
Insulin, as a peptide hormone, has recently gained attention for its pro-cognitive, anti-inflammatory and neuroprotective effects in the central nervous system (CNS). Most studies have indicated anxiogenic and neuroinflammatory effects of methamphetamine (MA) and other psychostimulants, even after periods of abstinence. The present study aimed to examine whether intranasal (IN) insulin treatment with high CNS bioavailability and minimal systemic side effects, can reverse the anxiety-like behavior and neuroinflammation induced by repeated MA administration...
September 13, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28917928/cell-interactive-alginate-chitosan-biopolymer-systems-with-tunable-mechanics-and-antibody-release-rates
#20
Nathan A Fletcher, Evelyn L Von Nieda, Melissa D Krebs
This work investigates techniques to produce biocompatible hydrogels with tunable stiffness without the addition of crosslinking agents or altering cell binding sites. Alginate and water-soluble chitosan salts were used to form polyelectrolyte complexes (PECs), where the storage and loss moduli could be increased by raising gelation temperatures. The largest change, a 6.5-fold increase in storage modulus, occurred when the crosslinking temperature was increased from 37 to 50°C while using chitosan with chlorine counterions...
November 1, 2017: Carbohydrate Polymers
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