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https://www.readbyqxmd.com/read/29786953/iatrogenic-botulism-outbreak-in-egypt-due-to-a-counterfeit-botulinum-toxin-a-preparation-a-descriptive-series-of-patient-features-and-outcome
#1
Eman Abdel Monaem Abdel Rashid, Nashwa Mohamed El-Mahdy, Huda Shehata Kharoub, Ahmed Salah Gouda, Naglaa Ahmed ElNabarawy, Bruno Mégarbane
Iatrogenic botulism resulting from the substantial increase in use of botulinum neurotoxin type-A (BoNT-A) treatment is rarely reported. We aimed to describe a large iatrogenic botulism outbreak in Egypt in June-July 2017. Nine patients developed botulism after receiving intramuscular injections of BoNT-A (dose: 200-300 IU) to treat cerebral palsy (N=7), spastic dystonia (N=1), and hyperhidrosis (N=1). Detailed findings were available in 5/9 cases. Patients were admitted to the hospital 5-10 days after the BoNT-A injection...
May 22, 2018: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/29786924/reproductive-ecology-of-ocotea-catharinensis-an-endangered-tree-species
#2
Tiago Montagna, Juliano Zago da Silva, Tiago Georg Pickart, Maurício Sedrez Dos Reis
Ocotea catharinensis (Lauraceae) is an endangered tree species from the Brazilian Atlantic Rainforest. Currently, little is known about the reproductive ecology of this species. Aiming to propose conservation measures, we described aspects related to phenology, floral biology, pollination, seed dispersal, and mating system of O. catharinensis. We conducted phenological observations in 62 individuals for two years. In one reproductive event, we evaluated nectar production, stigmatic receptivity, and pollen viability...
May 22, 2018: Plant Biology
https://www.readbyqxmd.com/read/29786914/conductive-hydrogels-as-smart-materials-for-flexible-electronic-devices
#3
Qinfeng Rong, Wenwei Lei, Mingjie Liu
Flexible conductive materials have gained considerable research interest in recent years because of their potential applications in flexible energy storage devices, sensors, touch panels, electronic-skins, etc. With excellent flexibility, outstanding electric properties and tunable mechanical properties, conductive hydrogels as conductive materials offer plentiful insights and opportunities for flexible electronic devices. Numerous synthetic strategies have been developed to obtain various conductive hydrogels, and high-performance devices based on these conductive hydrogels have been realized...
May 22, 2018: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29786902/engineered-metalloenzymes-with-non-canonical-coordination-environments
#4
Takahiro Hayashi, Donald Hilvert, Anthony P Green
Nature employs a limited number of genetically encoded, metal coordinating residues to create metalloenzymes with diverse structures and functions. Engineered components of the cellular translation machinery can now be exploited to genetically encode non-canonical ligands with user-defined electronic and structural properties. This ability to efficiently install 'chemically programmed' ligands into proteins can provide powerful chemical probes of metalloenzyme mechanisms and presents excellent opportunities to create metalloprotein catalysts with augmented properties and novel activities...
May 22, 2018: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29786901/degradable-polymers-and-nanoparticles-built-from-salicylic-acid
#5
Saeed Akkad, Christopher J Serpell
As more evidence emerges supporting the possibility that nonsteroidal anti-inflammatory drugs, especially aspirin (acetyl salicylic acid), might have a role in the prevention and management of certain types of cancer, there have been several attempts to fabricate salicylic acid-based polymers that can be employed in the targeted therapy of tumors. The primary disadvantage so far has been in use of nontherapeutic polymeric backbones that constitute the majority of the therapeutic particle's size. The focus of this research is the creation of a biodegradable polymer consisting only of salicylic acid, and its use as the main building block in targeted nanotherapeutics that would consequently provide both high local dose and sustained release of the active moiety...
May 22, 2018: Macromolecular Rapid Communications
https://www.readbyqxmd.com/read/29786900/avian-demographic-responses-to-drought-and-fire-a-community-level-perspective
#6
James F Saracco, Stephen M Fettig, George L San Miguel, David W Mehlman, Steven K Albert
Drought stress is an important consideration for wildlife in arid and semi-arid regions under climate change. Drought can impact plant and animal populations directly, through effects on their physiology, as well as indirectly through effects on vegetation productivity and resource availability, and by creating conditions conducive to secondary disturbance, such as wildfire. We implemented a novel approach to understanding community-level demographic responses of birds and their habitats to these stressors in the context of climate change at 14 study sites in the Four Corners region of the southwestern United States...
May 22, 2018: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/29786898/adults-with-comorbid-posttraumatic-stress-disorder-alcohol-use-disorder-and-opioid-use-disorder-the-effectiveness-of-modified-prolonged-exposure
#7
Kelly R Peck, Julie A Schumacher, Paul R Stasiewicz, Scott F Coffey
Opioid use disorders (OUDs) are a growing problem in the United States. When OUDs co-occur with problematic drinking and posttraumatic stress disorder (PTSD), negative drug-related mental and physical health outcomes may be exacerbated. Thus, it is important to establish whether PTSD treatments with established efficacy for dually diagnosed individuals also demonstrate efficacy in individuals who engage in problematic drinking and concurrent opioid misuse. Adults who met DSM-IV-TR criteria for PTSD and alcohol dependence were recruited from a substance use treatment facility and were randomly assigned to receive either modified prolonged exposure (mPE) therapy for PTSD or a non-trauma-focused comparison treatment...
May 22, 2018: Journal of Traumatic Stress
https://www.readbyqxmd.com/read/29786889/a-novel-conductive-mesoporous-layer-with-a-dynamic-two-step-deposition-strategy-boosts-efficiency-of-perovskite-solar-cells-to-20
#8
Haoxuan Sun, Kaimo Deng, Yayun Zhu, Min Liao, Jie Xiong, Yanrong Li, Liang Li
Lead halide perovskite solar cells (PSCs) with the high power conversion efficiency (PCE) typically use mesoporous metal oxide nanoparticles as the scaffold and electron-transport layers. However, the traditional mesoporous layer suffers from low electron conductivity and severe carrier recombination. Here, antimony-doped tin oxide nanorod arrays are proposed as novel transparent conductive mesoporous layers in PSCs. Such a mesoporous layer improves the electron transport as well as light utilization. To resolve the common problem of uneven growth of perovskite on rough surface, the dynamic two-step spin coating strategy is proposed to prepare highly smooth, dense, and crystallized perovskite films with micrometer-scale grains, largely reducing the carrier recombination ratio...
May 22, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29786888/injectable-bioresponsive-gel-depot-for-enhanced-immune-checkpoint-blockade
#9
Shuangjiang Yu, Chao Wang, Jicheng Yu, Jinqiang Wang, Yue Lu, Yuqi Zhang, Xudong Zhang, Quanyin Hu, Wujin Sun, Chaoliang He, Xuesi Chen, Zhen Gu
Although cancer immunotherapy based on immune checkpoint inhibitors holds great promise toward many types of cancers, several challenges still remain, associated with low objective response of patient rate as well as systemic side effects. Here, a combination immunotherapy strategy is developed based on a thermogelling reactive oxygen species (ROS)-responsive polypeptide gel for sustained release of anti-programmed cell death-ligand 1 antibody and dextro-1-methyl tryptophan, inhibitor of indoleamine-2,3-dioxygenase with leveraging the ROS level in the tumor microenvironment...
May 22, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29786887/perovskite-solar-cells-with-inorganic-electron-and-hole-transport-layers-exhibiting-long-term-%C3%A2-500-h-stability-at-85-%C3%A2-c-under-continuous-1-sun-illumination-in-ambient-air
#10
Seongrok Seo, Seonghwa Jeong, Changdeuck Bae, Nam-Gyu Park, Hyunjung Shin
Despite the high power conversion efficiency (PCE) of perovskite solar cells (PSCs), poor long-term stability is one of the main obstacles preventing their commercialization. Several approaches to enhance the stability of PSCs have been proposed. However, an accelerating stability test of PSCs at high temperature under the operating conditions in ambient air remains still to be demonstrated. Herein, interface-engineered stable PSCs with inorganic charge-transport layers are shown. The highly conductive Al-doped ZnO films act as efficient electron-transporting layers as well as dense passivation layers...
May 22, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29786884/bone-morbidity-and-recovery-in-children-with-acute-lymphoblastic-leukemia-results-of-a-six-year-prospective-cohort-study
#11
Leanne M Ward, Jinhui Ma, Bianca Lang, Josephine Ho, Nathalie Alos, Mary Ann Matzinger, Nazih Shenouda, Brian Lentle, Jacob L Jaremko, Beverly Wilson, David Stephure, Robert Stein, Anne Marie Sbrocchi, Celia Rodd, Victor Lewis, Sara Israels, Ronald M Grant, Conrad V Fernandez, David B Dix, Elizabeth A Cummings, Robert Couch, Elizabeth Cairney, Ronald Barr, Sharon Abish, Stephanie A Atkinson, John Hay, Frank Rauch, David Moher, Kerry Siminoski, Jacqueline Halton
Osteoporotic fractures are a significant cause of morbidity in acute lymphoblastic leukemia (ALL). Our objective was to determine the incidence and predictors of fractures and recovery from osteoporosis in pediatric ALL over 6 years following glucocorticoid initiation. Vertebral fractures (VF) and vertebral body reshaping were assessed on annual spine radiographs, low-trauma non-VF were recorded at regular intervals and spine bone mineral density (BMD) was captured every 6 months for 4 years and then annually...
May 22, 2018: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/29786880/metagenomic-study-of-bacterial-microbiota-in-persistent-endodontic-infections-using-next-generation-sequencing
#12
G Sánchez-Sanhueza, H Bello-Toledo, G González-Rocha, A T Gonçalves, V Valenzuela, C Gallardo-Escárate
AIM: To determine the bacterial microbiota in root canals associated with persistent apical periodontitis and their relationship with the clinical characteristics of patients using next-generation sequencing (NGS). METHODOLOGY: Bacterial samples from root canals associated with teeth having persistent apical periodontitis were taken from 24 patients undergoing root canal retreatment. Bacterial DNA was extracted, and V3-V4 variable regions of the 16S rRNA gene were amplified...
May 22, 2018: International Endodontic Journal
https://www.readbyqxmd.com/read/29786877/morphomic-malnutrition-score-a-standardized-screening-tool-for-severe-malnutrition-in-adults
#13
Christopher Lee, Erica Raymond, Brian A Derstine, Joshua M Glazer, Rebecca Goulson, Avinash Rajasekaran, Jill Cherry-Bukowiec, Grace L Su, Stewart C Wang
BACKGROUND: Granular diagnostic criteria for adult malnutrition are lacking. OBJECTIVE: This study uses analytic morphomics to define the Morphomic Malnutrition Score (MMS), a robust screening tool for severe malnutrition. METHODS: The study population (n = 643) consisted of 2 cohorts: 1) 124 emergency department patients diagnosed with severe malnutrition by a registered dietitian (RD) and an available computed tomography (CT) scan within 2 days of RD evaluation, and 2) 519 adult kidney donor candidates to represent a healthy cohort...
May 22, 2018: JPEN. Journal of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/29786870/the-association-between-local-atherosclerosis-of-the-prostatic-artery-and-benign-prostatic-enlargement-in-humans-putative-mechanism-of-chronic-ischemia-for-prostatic-enlargement
#14
Nobuhiro Haga, Hidenori Akaihata, Junya Hata, Ken Aikawa, Tomohiko Yanagida, Kanako Matsuoka, Tomoyuki Koguchi, Seiji Hoshi, Soichiro Ogawa, Masao Kataoka, Yuichi Sato, Kei Ishibashi, Osamu Suzuki, Yuko Hashimoto, Yoshiyuki Kojima
BACKGROUND: To investigate the possible pathogenesis of the benign prostatic enlargement (BPE) induced by local atherosclerosis, the association between local atherosclerosis and prostatic enlargement was investigated, and molecular biological analyses were performed using human prostatectomy specimens. METHODS: A total of 69 consecutive patients who underwent robot-assisted radical prostatectomy (RARP) participated in this prospective study. To evaluate actual local atherosclerosis, prostatic arteries were removed during RARP...
May 21, 2018: Prostate
https://www.readbyqxmd.com/read/29786842/correlated-time-variation-of-bulk-microstructure-and-rheology-in-asphalt-binders
#15
A Ramm, N Sakib, A Bhasin, M C Downer
We use near-infrared dark-field optical microscopy to probe isothermal time variation of the volume fraction of naturally-occurring, subsurface microstructures in PG 64-22 asphalt binders at temperature T=30∘C, following a rapid heating (cooling) increment |ΔT|=20∘C from initial temperature T0=10∘C(50∘C). We compare these microstructure variations with isothermal time variations of the magnitude |G30∗(t)| of the bulk complex shear modulus measured for identical sample conditions with a Dynamic Shear Rheometer...
May 22, 2018: Journal of Microscopy
https://www.readbyqxmd.com/read/29786829/meta-analysis-examining-the-epidemiology-of-clozapine-associated-neutropenia
#16
N Myles, H Myles, S Xia, M Large, S Kisely, C Galletly, R Bird, D Siskind
BACKGROUND: Clozapine is associated with life-threatening neutropenia. There are no previous meta-analyses of the epidemiology of clozapine-associated neutropenia. OBJECTIVES: To determine the cumulative incidence of mild, moderate and severe neutropenia, incidence of death related to severe neutropenia, case fatality rate of neutropenia and the longitudinal incidence of neutropenia following exposure to clozapine. DATA SOURCES: A systematic search of Medline, EMBASE and PsycINFO using search terms [clozapine OR clopine OR zaponex OR clozaril] AND [neutropenia OR agranulocytosis]...
May 21, 2018: Acta Psychiatrica Scandinavica
https://www.readbyqxmd.com/read/29786813/prediction-of-mortality-in-pediatric-traumatic-brain-injury-implementations-from-a-tertiary-pediatric-intensive-care-facility
#17
Ebru Atike Ongun, Oğuz Dursun
BACKGROUND: To explore the mortality risk factors of traumatic brain injury in pediatric intensive care unit admissions. METHODS: Eighty-eight children (categorized using the Glasgow Coma Scale) between September 2014 and December 2016 were analyzed. Emergency department and intensive care course, treatment strategies, axonal injury, intubation and tracheostomy rates, length of intensive care and hospitalization, Rotterdam-CT scores, injury severity scores, and PRISM-III scores were recorded...
May 2018: Ulusal Travma Ve Acil Cerrahi Dergisi, Turkish Journal of Trauma & Emergency Surgery: TJTES
https://www.readbyqxmd.com/read/29786812/the-microrna-expression-profile-in-rat-lung-tissue-early-after-burn-injury
#18
Donghai Zhang, Yang Chang, Shaofang Han, Longlong Yang, Quan Hu, Yonghui Yu, Lingying Liu, Jiake Chai
BACKGROUND: Severe burn causes acute lung injury in many victims, but the related mechanisms have been barely investigated. microRNAs (miRNAs) important regulators in numerous physiological and pathophysiological process. However, the roles of miRNAs in burn lung injury are untested. METHODS: Six healthy male Sprague-Dawley rats were randomly assigned into burn and sham groups. Lung injury was evaluated by hematoxylin and eosin (HE) staining at 24 h after injury...
May 2018: Ulusal Travma Ve Acil Cerrahi Dergisi, Turkish Journal of Trauma & Emergency Surgery: TJTES
https://www.readbyqxmd.com/read/29786798/studies-on-steroid-receptor-coactivators-in-prostate-cancer
#19
Zoran Culig, Frédéric R Santer
High expression of several androgen receptor coactivators is frequently reported in prostate cancer. Coactivators such as p300/CBP are involved in modulation of androgen receptor activity by increasing the effects of androgenic hormones and enhancing agonistic activity of antiandrogens. Studies in the field of prostate cancer frequently examined the role of p300/CBP and SRC-1 (NCOA1). In addition to their effects on steroid receptor activity, coactivators may influence other cellular functions such as migration and invasion...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29786795/protocols-for-studies-on-stromal-cells-in-prostate-cancer
#20
Damien A Leach, Grant Buchanan
Interactions between tumor cells and fibroblasts play a pivotal role in cancer development and progression. Indeed, the paracrine communication between these two cell types is known to have physiological effects that alter carcinogenic and metastatic potential. An often overlooked player in these interactions is the involvement of the extracellular matrix (ECM). The network of ECM proteins secreted from fibroblasts is reportedly altered with cancer initiation and progression, and in several cases has been associated with patient outcome...
2018: Methods in Molecular Biology
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