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https://www.readbyqxmd.com/read/28434003/cytotoxic-effects-of-transthyretin-aggregates-in-an-epidermoid-cell-line
#1
Vai Hong Fong, Amandio Vieira
OBJECTIVE: Skin amyloid deposits can occur as part of systemic amyloidoses including those involving misfolded- aggregated transthyretins (agTTR). Pathological effects of agTTR on the skin are not well understood. The main objective of the current study was to examine the toxicity of agTTR upon a human keratinocyte cell line. METHODS: Cells were analyzed for indicators of oxidative stress after treatment with normal soluble TTR or the same pre-aggregation concentration of agTTR...
April 22, 2017: Pathobiology: Journal of Immunopathology, Molecular and Cellular Biology
https://www.readbyqxmd.com/read/28433895/evaluating-network-level-predictors-of-behavior-change-among-injection-networks-enrolled-in-the-hptn-037-randomized-controlled-trial
#2
Laramie R Smith, Steffanie A Strathdee, David Metzger, Carl Latkin
BACKGROUND: Little is known about ways network-level factors that may influence the adoption of combination prevention behaviors among injection networks, or how network-oriented interventions might moderate this behavior change process. METHODS: A total of 232 unique injection risk networks in Philadelphia, PA, were randomized to a peer educator network-oriented intervention or standard of care control arm. Network-level aggregates reflecting the injection networks' baseline substance use dynamics, social interactions, and the networks exposure to gender- and structural-related vulnerabilities were calculated and used to predict changes in the proportion of network members adopting safer injection practices at 6-month follow-up...
April 5, 2017: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/28433850/surgical-resection-and-histopathological-analysis-of-a-thrombosed-giant-fusiform-mca-aneurysm-after-initial-treatment-with-a-flow-diversion-construct
#3
Jayson Sack, Vincent Cheung, Deirdre Amaro, Arvin R Wali, David R Santiago-Dieppa, J Scott Pannell, Alexander A Khalessi
BACKGROUND: We describe the histopathology of an un-ruptured, giant calcified left MCA fusiform aneurysm initially treated with endovascular flow diversion. The flow diversion construct underwent post-operative in-stent thrombosis, necessitating surgical resection of the aneurysm to eliminate mass effect. METHODS: A 75-year-old woman with a known left MCA aneurysm presented to the Emergency Department with moderate right hemibody weakness. Due to the clinical and radiographic progression of the aneurysm, the patient was offered treatment...
April 19, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28433789/macromolecular-crowding-for-tailoring-tissue-derived-fibrillated-matrices
#4
Valentina Magno, Jens Friedrichs, Heather M Weber, Marina C Prewitz, Mikhail V Tsurkan, Carsten Werner
Tissue-derived fibrillated matrices can be instrumental for the in vitro reconstitution of multiphasic extracellular microenvironments. However, despite of several advantages, the obtained scaffolds so far offer a rather narrow range of materials characteristics only. In this work, we demonstrate how macromolecular crowding (MMC) - the supplementation of matrix reconstitution media with synthetic or natural macromolecules in ways to create excluded volume effects (EVE) - can be employed for tailoring important structural and biophysical characteristics of kidney-derived fibrillated matrices...
April 19, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28433766/1-4-dioxane-drinking-water-occurrence-data-from-the-third-unregulated-contaminant-monitoring-rule
#5
David T Adamson, Elizabeth A Piña, Abigail E Cartwright, Sharon R Rauch, R Hunter Anderson, Thomas Mohr, John A Connor
This study examined data collected from U.S. public drinking water supplies in support of the recently-completed third round of the Unregulated Contaminant Monitoring Rule (UCMR3) to better understand the nature and occurrence of 1,4-dioxane and the basis for establishing drinking water standards. The purpose was to evaluate whether the occurrence data for this emerging but federally-unregulated contaminant fit with common conceptual models, including its persistence and the importance of groundwater contamination for potential exposure...
April 20, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28433685/p62-mediated-mitochondrial-clustering-attenuates-apoptosis-induced-by-mitochondrial-depolarization
#6
Bin Xiao, Xiao Deng, Grace G Y Lim, Wei Zhou, Wuan-Ting Saw, Zhi Dong Zhou, Kah-Leong Lim, Eng-King Tan
Parkin/PINK1-mediated mitophagy is implicated in the pathogenesis of Parkinson's disease (PD). Prior to elimination of damaged mitochondria, Parkin translocates to mitochondria and induces mitochondrial clustering. While the mechanism of PINK1-dependent Parkin redistribution to mitochondria is now becoming clear, the role of mitochondrial clustering has been less well understood. In our study, we found that loss of p62 disrupted mitochondrial aggregation and specifically sensitized Parkin-expressing cells to apoptosis induced by mitochondrial depolarization...
April 19, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28433683/municipal-wastewater-sludge-as-a-sustainable-bioresource-in-the-united-states
#7
Timothy E Seiple, André M Coleman, Richard L Skaggs
Within the United States and Puerto Rico, publicly owned treatment works (POTWs) process 130.5 Gl/d (34.5 Bgal/d) of wastewater, producing sludge as a waste product. Emerging technologies offer novel waste-to-energy pathways through whole sludge conversion into biofuels. Assessing the feasibility, scalability and tradeoffs of various energy conversion pathways is difficult in the absence of highly spatially resolved estimates of sludge production. In this study, average wastewater solids concentrations and removal rates, and site specific daily average influent flow are used to estimate site specific annual sludge production on a dry weight basis for >15,000 POTWs...
April 20, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28433678/montreal-accord-on-patient-reported-outcomes-use-series-paper-4-patient-reported-outcomes-pro-can-inform-clinical-decision-making-in-chronic-care
#8
Clifton O Bingham, Vanessa Noonan, Claudine Auger, Debbie Feldman, Sara Ahmed, Susan J Bartlett
BACKGROUND: Providing patient-centered healthcare requires that patient needs, preferences, and valued outcomes are more fully integrated into all decisions. Patient reported outcome measures (PROs) provide unique information from the patient perspective on overall health, symptoms, burden, and treatment response. OBJECTIVE: We sought to describe applications of PROs in clinical settings and considerations for implementation from the perspectives of PRO researchers, clinicians, administrators, policy makers, and patients attending a multidisciplinary meeting...
April 19, 2017: Journal of Clinical Epidemiology
https://www.readbyqxmd.com/read/28433677/montreal-accord-on-patient-reported-outcomes-use-series-paper-9-anonymization-and-ethics-considerations-for-capturing-and-sharing-patient-reported-outcomes-pro
#9
L Arbuckle, E Moher, S J Bartlett, S Ahmed, K El Emam
BACKGROUND: Patient reported outcomes (PRO) are collected with consent for care, however using the data for any other purpose requires consent for that additional purpose, or the anonymization of the data. Collecting explicit consent to use this data for secondary purposes, before the patient completes a PRO, can also bias the responses. OBJECTIVE: We consider the ethical and security issues related to the collection of data at the point of care or in the population, and the aggregation and integration of PRO data with administrative databases to facilitate decision-making and comparative effectiveness research...
April 19, 2017: Journal of Clinical Epidemiology
https://www.readbyqxmd.com/read/28433661/differential-protein-acetylation-assists-import-of-excess-sod2-into-mitochondria-and-mediates-sod2-aggregation-associated-with-cardiac-hypertrophy-in-the-murine-sod2-tg-heart
#10
Liwen Zhang, Chwen-Lih Chen, Patrick T Kang, Zhicheng Jin, Yeong-Renn Chen
SOD2 is the primary antioxidant enzyme neutralizing ((•))O2((-)) in mitochondria. Cardiac-specific SOD2 overexpression (SOD2-tg) induces supernormal function and cardiac hypertrophy in the mouse heart. However, the reductive stress imposed by SOD2 overexpression results in protein aggregation of SOD2 pentamers and differential hyperacetylation of SOD2 in the mitochondria and cytosol. Here, we studied SOD2 acetylation in SOD2-tg and wild-type mouse hearts. LC-MS/MS analysis indicated the presence of four acetylated lysines in matrix SOD2 and nine acetylated lysines in cytosolic SOD2 from the SOD2-tg heart...
April 19, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28433595/effects-of-chlorpyrifos-on-soil-carboxylesterase-activity-at-an-aggregate-size-scale
#11
Juan C Sanchez-Hernandez, Marco Sandoval
The impact of pesticides on extracellular enzyme activity has been mostly studied on the bulk soil scale, and our understanding of the impact on an aggregate-size scale remains limited. Because microbial processes, and their extracellular enzyme production, are dependent on the size of soil aggregates, we hypothesized that the effect of pesticides on enzyme activities is aggregate-size specific. We performed three experiments using an Andisol to test the interaction between carboxylesterase (CbE) activity and the organophosphorus (OP) chlorpyrifos...
April 20, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28433568/the-role-of-copulatory-plugs-in-the-mosquito-parasitic-nematode-strelkovimermis-spiculatus
#12
Yu-Han Lan, Yi Wang, Randy Gaugler
The mosquito-parasitic nematode, Strelkovimermis spiculatus (Mermithidae: Nematoda) emerges from hosts and aggregates to form mating clusters characterized by intense male-male competition for females. Successful males deposit an adhesive copulatory plug over the female vulva after insemination. In choice experiments, males strongly preferred virgin females, whereas plugged females were ignored. Males made no attempt to displace copulatory plugs deposited by previous males. Plugged females repelled males without the need for physical contact...
April 19, 2017: Journal of Invertebrate Pathology
https://www.readbyqxmd.com/read/28433498/long-term-effectiveness-of-aripiprazole-once-monthly-for-schizophrenia-is-maintained-in-the-qualify-extension-study
#13
Dieter Naber, Ross A Baker, Anna Eramo, Carlos Forray, Karina Hansen, Christophe Sapin, Timothy Peters-Strickland, Anna-Greta Nylander, Peter Hertel, Simon Nitschky Schmidt, Jean-Yves Loze, Steven G Potkin
OBJECTIVE: To evaluate long-term safety and effectiveness of continued treatment with aripiprazole once-monthly 400mg (AOM 400) in patients with schizophrenia. METHODS: Patients who completed the QUALIFY study (NCT01795547) in the AOM 400 arm were eligible for 6 additional once-monthly injections of AOM 400 during an open-label, 24-week extension (NCT01959035). Safety data were collected at each visit. Effectiveness measures included change from baseline in health-related qualify of life and functioning on the Heinrichs-Carpenter Quality of Life scale (QLS) and Clinical Global Impression - Severity (CGI-S) scale...
April 19, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28433477/novel-mutations-in-the-c-terminal-region-of-gmppb-causing-limb-girdle-muscular-dystrophy-overlapping-with-congenital-myasthenic-syndrome
#14
Sushan Luo, Shuang Cai, Susan Maxwell, Dongyue Yue, Wenhua Zhu, Kai Qiao, Zhen Zhu, Lei Zhou, Jianying Xi, Jiahong Lu, David Beeson, Chongbo Zhao
Mutations in the GMPPB gene may underlie both limb girdle muscular dystrophy (LGMD) and congenital myasthenic syndrome (CMS). Forty-one cases have been reported to date and hotspot mutations are emerging in the Caucasian population. Clinical and pathological features of 5 patients with compound heterozygous GMPPB mutations were collected and retrospectively reviewed. In vitro functional analysis was performed to investigate the pathogeneity of GMPPB variants. The patients presented with proximal limb weakness in their first to second decades...
March 10, 2017: Neuromuscular Disorders: NMD
https://www.readbyqxmd.com/read/28433468/environmental-structure-and-energetic-consequences-in-groups-of-young-mice
#15
Delia S Shelton, Paul M Meyer, Karen M Ocasio
Microenvironments can have considerable physiological consequences for the inhabitants by influencing the movements of individual members. The microenvironment can permit more diverse aggregation patterns or restrict movements to certain dimensions. Here, we tested whether aspects of the microenvironment that influenced aggregation patterns also influenced the energetics of groups of young animals. We tested the effects of enclosure configuration on the group temperature and respiration of infant mice (Mus musculus)...
April 19, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28433461/severely-impaired-adult-brain-neurogenesis-in-cyclin-d2-knock-out-mice-produces-very-limited-phenotypic-changes
#16
REVIEW
Robert K Filipkowski, Leszek Kaczmarek
The discovery of new neurons being produced in the brains of adult mammals (adult brain neurogenesis) began a quest to determine the function(s) of these cells. Major hypotheses in the field have assumed that these neurons play pivotal role, in particular, in learning and memory phenomena, mood control, and epileptogenesis. In our studies summarized herein, we used cyclin D2 knockout (KO) mice, as we have shown that cyclin D2 is the key factor in adult brain neurogenesis and thus its lack produces profound impairment of the process...
April 19, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28433362/effect-of-preadmission-bowel-preparation-on-outcomes-of-elective-colorectal-procedures-in-young-children
#17
Guillermo J Ares, Irene Helenowski, Catherine J Hunter, Marybeth Madonna, Marleta Reynolds, Timothy Lautz
BACKGROUND: The utility of mechanical bowel preparation (MBP) to minimize infectious complications in elective colorectal surgery is contentious. Though data is scarce in children, adult studies suggest a benefit to MBP when administered with oral antibiotics (OAB). METHODS: After IRB approval, the Pediatric Health Information System (PHIS) was queried for young children undergoing elective colon surgery from 2011 to 2014. Patients were divided into: no bowel preparation (Group 1), MBP (Group 2), and MBP plus OAB (Group 3)...
March 30, 2017: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/28433262/primary-motor-cortex-alterations-in-alzheimer-disease-a-study-in-the-3xtg-ad-model
#18
E Orta-Salazar, A I Feria-Velasco, S Díaz-Cintra
INTRODUCTION: In humans and animal models, Alzheimer disease (AD) is characterised by accumulation of amyloid-β peptide (Aβ) and hyperphosphorylated tau protein, neuronal degeneration, and astrocytic gliosis, especially in vulnerable brain regions (hippocampus and cortex). These alterations are associated with cognitive impairment (loss of memory) and non-cognitive impairment (motor impairment). The purpose of this study was to identify cell changes (neurons and glial cells) and aggregation of Aβ and hyperphosphorylated tau protein in the primary motor cortex (M1) in 3xTg-AD mouse models at an intermediate stage of AD...
April 19, 2017: Neurología: Publicación Oficial de la Sociedad Española de Neurología
https://www.readbyqxmd.com/read/28433155/a-highly-regular-fucosylated-chondroitin-sulfate-from-the-sea-cucumber-massinium-magnum-structure-and-effects-on-coagulation
#19
Nadezhda E Ustyuzhanina, Maria I Bilan, Andrey S Dmitrenok, Elizaveta Yu Borodina, Valentin A Stonik, Nikolay E Nifantiev, Anatolii I Usov
A fucosylated chondroitin sulfate MM was isolated from the sea cucumber Massinium magnum. Structure of this polysaccharide was determined using chemical and NMR spectroscopic methods. The backbone of MM was shown to consist mainly of chondroitin sulfate E units with a small portion (about 10%) of chondroitin sulfate A fragments. Practically one type of branches Fuc3S4S attached to O-3 of GlcA residues was found in the polysaccharide molecules. The main repeating units of MM are →4)-[α-l-Fuc3S4S-(1→3)]-β-d-GlcA-(1→3)-β-d-GalNAc4S6S-(1→, whereas the minor repeating units are →4)-[α-l-Fuc3S4S-(1→3)]-β-d-GlcA-(1→3)-β-d-GalNAc4S-(1→...
July 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28433029/early-stages-of-clathrin-aggregation-at-a-membrane-in-coarse-grained-simulations
#20
M Giani, W K den Otter, W J Briels
The self-assembly process of clathrin coated pits during endocytosis has been simulated by combining and extending coarse grained models of the clathrin triskelion, the adaptor protein AP2, and a flexible network membrane. The AP2's core, upon binding to membrane and cargo, releases a motif that can bind clathrin. In conditions where the core-membrane-cargo binding is weak, the binding of this motif to clathrin can result in a stable complex. We characterize the conditions and mechanisms resulting in the formation of clathrin lattices that curve the membrane, i...
April 21, 2017: Journal of Chemical Physics
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