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https://www.readbyqxmd.com/read/28823104/novel-polymeric-composites-based-on-carboxymethyl-chitosan-and-poly-acrylic-acid-in-vitro-and-in-vivo-evaluation
#1
Qurat-Ul-Ain Sharif, Muhammad Sohail, Mahmood Ahmad, Muhammad Usman Minhas, Shahzeb Khan, Samiullah Khan, Mubeen Kousar
The purpose of the study was to develop a novel, efficient, stable, chemically crosslinked polymeric system that have pH responsive behaviour and can effectively release 5-FU in a controlled manner. Furthermore it can target colonic cancer minimizing the side effects of in vivo chemotherapy via 5-FU. Swelling and drug release studies were performed to evaluate its in vitro release behaviour. Hydrogels were also characterized by FTIR, SEM and DSC. In vitro cytocompatibility and cytotoxicity of the hydrogels were determined by MTT assay using HeLa cells...
August 19, 2017: Journal of Materials Science. Materials in Medicine
https://www.readbyqxmd.com/read/28822925/accumulation-of-anticoagulant-rodenticides-chlorophacinone-bromadiolone-and-brodifacoum-in-a-non-target-invertebrate-the-slug-deroceras-reticulatum
#2
Hussein Alomar, André Chabert, Michael Coeurdassier, Danièle Vey, Philippe Berny
Anticoagulant rodenticides (ARs) are used worldwide to control populations of agricultural and urban rodents, but these pesticides may be accumulated in and poisoned non-target species of wildlife. Slugs may feed on rodenticide bait following field applications. Thus, it can be assumed that their predators are exposed to rodenticides through food chain transfer. However, AR exposure in the slugs has not been systematically studied. We investigated the accumulation of three ARs (chlorophacinone, bromadiolone or brodifacoum) in the slug Deroceras reticulatum exposed for a period of 5days followed by depuration time of 4days in the laboratory...
August 17, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28822873/surface-modification-of-an-intraocular-lens-material-by-plasma-assisted-grafting-with-2-hydroxyethyl-methacrylate-hema-for-controlled-release-of-moxifloxacin
#3
A Paula Vieira, Andreia F R Pimenta, Diana Silva, M Helena Gil, Patrícia Alves, Patrícia Coimbra, José L G C Mata, Dimitriya Bozukova, Tiago R Correia, Ilídio J Correia, A Paula Serro, A Jorge Guiomar
Endophthalmitis, an inflammation of the eye due to perioperative infection, may occur after cataract surgery. Intraocular lenses (IOLs) loaded with an antibiotic have been proposed as an alternative to the conventional postoperative endophthalmitis prophylaxis, since the antibiotic is delivered directly to the target site. In this work, an IOL-based antibiotic releasing system was prepared from a copolymer used in the production of IOLs and a fluoroquinolone used in endophthalmitis prophylaxis (moxifloxacin, MFX)...
August 16, 2017: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/28822838/scavenging-reactive-oxygen-species-inhibits-status-epilepticus-induced-neuroinflammation
#4
Pallavi B McElroy, Li-Ping Liang, Brian J Day, Manisha Patel
Inflammation has been identified as an important mediator of seizures and epileptogenesis. Understanding the mechanisms underlying seizure-induced neuroinflammation could lead to the development of novel therapies for the epilepsies. Reactive oxygen species (ROS) are recognized as mediators of seizure-induced neuronal damage and are known to increase in models of epilepsies. ROS are also known to contribute to inflammation in several disease states. We hypothesized that ROS are key modulators of neuroinflammation i...
August 16, 2017: Experimental Neurology
https://www.readbyqxmd.com/read/28822828/targeted-lowering-of-central-blood-pressure-in-patients-with-hypertension-baseline-recruitment-rationale-and-design-of-a-randomized-controlled-trial-the-low-cbp-study
#5
James E Sharman, Tony Stanton, Christopher M Reid, Anthony Keech, Philip Roberts-Thomson, Simon Stewart, Robert Greenough, Michael Stowasser, Walter P Abhayaratna
BACKGROUND: High blood pressure (BP) is the most common modifiable cause of death from cardiovascular disease. Lowering BP with medication improves patient outcomes, but even in populations with normal upper arm (brachial) BP there remains considerable residual risk for cardiovascular disease and this may be due to persistently elevated central BP. There has never been a trial to determine the value of targeted central BP lowering among patients with hypertension, and this was the aim of this study...
August 16, 2017: Contemporary Clinical Trials
https://www.readbyqxmd.com/read/28822827/host-genes-regulate-transcription-of-sperm-introduced-hepatitis-b-virus-genes-in-embryo
#6
Ying Zhong, Dong-Ling Liu, Mohamed Morsi M Ahmed, Peng-Hao Li, Xiao-Ling Zhou, Qing-Dong Xie, Xiao-Qing Xu, Ting-Ting Han, Zhi-Wei Hou, Chen-Yao Zhong, Ji-Hua Huang, Fei Zeng, Tian-Hua Huang
Hepatitis B virus (HBV) can invade the male germline, and sperm-introduced HBV genes could be transcribed in embryo. This study was to explore whether viral gene transcription is regulated by host genes. Embryos were produced by in vitro fertilization of hamster oocytes with human sperm containing the HBV genome. Total RNA extracted from test and control embryos were subjected to SMART-PCR, SSH, microarray hybridization, sequencing and BLAST analysis. Twenty-nine sequences showing significant identity to five human gene families were identified, with CSH2, EIF4G2, PCBD2, PSG4 and TTN selected to represent target genes...
August 16, 2017: Reproductive Toxicology
https://www.readbyqxmd.com/read/28822806/pericardial-adipose-and-aromatase-a-new-translational-target-for-aging-obesity-and-arrhythmogenesis
#7
Gabriel B Bernasochi, Wah Chin Boon, Claire L Curl, Upasna Varma, Salvatore Pepe, Marianne Tare, Laura J Parry, Evdokia Dimitriadis, Stephen B Harrap, Chrishan J Nalliah, Jonathan M Kalman, Lea M D Delbridge, James R Bell
A correlation exists between the extent of pericardial adipose and atrial fibrillation (AF) risk, though the underlying mechanisms remain unclear. Selected adipose depots express high levels of aromatase, capable of converting androgens to estrogens - no studies have investigated aromatase occurrence/expression regulation in pericardial adipose. The Women's Health Initiative reported that estrogen-only therapy in women elevated AF incidence, indicating augmented estrogenic influence may exacerbate cardiac vulnerability...
August 16, 2017: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/28822783/the-expression-induction-and-pharmacological-activity-of-cyp1a2-are-post-transcriptionally-regulated-by-microrna-hsa-mir-132-5p
#8
Yinting Chen, Linjuan Zeng, Yong Wang, William H Tolleson, Bridgett Knox, Si Chen, Zhen Ren, Lei Guo, Nan Mei, Feng Qian, Kaihong Huang, David Liu, Weida Tong, Dianke Yu, Baitang Ning
Cytochrome P450 1A2 (CYP1A2) is one of the most abundant and important drug metabolizing enzymes in human liver. However, little is known about the post-transcriptional regulation of CYP1A2, especially the mechanisms involving microRNAs (miRNAs). This study applied a systematic approach to investigate the post-transcriptional regulation of CYP1A2 by miRNAs. Candidate miRNAs targeting the 3'-untranslated region (3'-UTR) of CYP1A2 were screened in silico, resulting in the selection of sixty-two potential miRNAs for further analysis...
August 16, 2017: Biochemical Pharmacology
https://www.readbyqxmd.com/read/28822780/global-yellow-fever-vaccination-coverage-from-1970-to-2016-an-adjusted-retrospective-analysis
#9
Freya M Shearer, Catherine L Moyes, David M Pigott, Oliver J Brady, Fatima Marinho, Aniruddha Deshpande, Joshua Longbottom, Annie J Browne, Moritz U G Kraemer, Kathleen M O'Reilly, Joachim Hombach, Sergio Yactayo, Valdelaine E M de Araújo, Aglaêr A da Nóbrega, Jonathan F Mosser, Jeffrey D Stanaway, Stephen S Lim, Simon I Hay, Nick Golding, Robert C Reiner
BACKGROUND: Substantial outbreaks of yellow fever in Angola and Brazil in the past 2 years, combined with global shortages in vaccine stockpiles, highlight a pressing need to assess present control strategies. The aims of this study were to estimate global yellow fever vaccination coverage from 1970 through to 2016 at high spatial resolution and to calculate the number of individuals still requiring vaccination to reach population coverage thresholds for outbreak prevention. METHODS: For this adjusted retrospective analysis, we compiled data from a range of sources (eg, WHO reports and health-service-provider registeries) reporting on yellow fever vaccination activities between May 1, 1939, and Oct 29, 2016...
August 16, 2017: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/28822689/cholesterol-lowering-gene-therapy-counteracts-the-development-of-non-ischemic-cardiomyopathy-in-mice
#10
Ilayaraja Muthuramu, Ruhul Amin, Andrey Postnov, Mudit Mishra, Joseph Pierre Aboumsallem, Tom Dresselaers, Uwe Himmelreich, Paul P Van Veldhoven, Olivier Gheysens, Frank Jacobs, Bart De Geest
A causal role of hypercholesterolemia in non-ischemic heart failure has never been demonstrated. Adeno-associated viral serotype 8 (AAV8)-low-density lipoprotein receptor (AAV8-LDLr) gene transfer was performed in LDLr-deficient mice without and with pressure overload induced by transverse aortic constriction (TAC). AAV8-LDLr gene therapy resulted in an 82.8% (p < 0.0001) reduction of plasma cholesterol compared with controls. Mortality rate was lower (p < 0.05) in AAV8-LDLr TAC mice compared with control TAC mice (hazard ratio for mortality 0...
August 1, 2017: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/28822657/a-systematic-review-of-muscle-morphology-and-function-in-intermittent-claudication
#11
REVIEW
Amy E Harwood, Stephanie King, Joshua Totty, George E Smith, Natalie Vanicek, Ian C Chetter
OBJECTIVE: Intermittent claudication (IC) is frequently associated with deterioration in walking capacity and physical function, and it can often result in an impairment in balance. Whereas supervised exercise is recommended by the National Institute for Health and Care Excellence as the first-line treatment, the mechanism behind walking improvement is poorly understood. The existing literature suggests that there may be some physiologic change to the skeletal muscle contributing to the functional impairment, but these data are conflicting...
August 16, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28822642/a-suicidal-strain-of-listeria-monocytogenes-is-effective-as-a-dna-vaccine-delivery-system-for-oral-administration
#12
Shubhra Sinha, Cheng-Yi Kuo, Joan K Ho, Paul J White, Jalal A Jazayeri, Colin W Pouton
In this study we determined the in vivo activity of model ovalbumin vaccines delivered by direct intramuscular delivery of plasmid DNA or oral delivery using a recombinant suicidal Listeria monocytogenes strain (rsΔ2). In a previous report we described how rsΔ2 is capable of delivering luciferase, as protein or DNA, in vitro, into non-dividing intestinal epithelial cells (Kuo et al., 2009). This is achieved by engineering a dual expression shuttle vector, pDuLX-Luc, that replicates in E. coli and rsΔ2 and drives gene expression from the Listeria promoter (Phly) as well as the eukaryotic cytomegalovirus promoter (CMV), thereby delivering both protein and plasmid DNA to the cell cytoplasm...
August 16, 2017: Vaccine
https://www.readbyqxmd.com/read/28822598/next-generation-insect-resistant-plants-rnai-mediated-crop-protection
#13
REVIEW
Jiang Zhang, Sher Afzal Khan, David G Heckel, Ralph Bock
Plant-mediated RNA interference (RNAi) shows great potential in crop protection. It relies on plants stably expressing double-stranded RNAs (dsRNAs) that target essential genes in pest insects. Practical application of this strategy is challenging because producing sufficient amounts of stable dsRNA in plants has proven to be difficult to achieve with conventional transgenesis. In addition, many insects do not respond to exogenously applied dsRNAs, either degrading them or failing to import them into the cytoplasm...
May 20, 2017: Trends in Biotechnology
https://www.readbyqxmd.com/read/28822541/only-7-of-the-variation-in-feed-efficiency-in-veal-calves-can-be-predicted-from-variation-in-feeding-motivation-digestion-metabolism-immunology-and-behavioral-traits-in-early-life
#14
M S Gilbert, J J G C van den Borne, C G van Reenen, W J J Gerrits
High interindividual variation in growth performance is commonly observed in veal calf production and appears to depend on milk replacer (MR) composition. Our first objective was to examine whether variation in growth performance in healthy veal calves can be predicted from early life characterization of these calves. Our second objective was to determine whether these predictions differ between calves that are fed a high- or low-lactose MR in later life. A total of 180 male Holstein-Friesian calves arrived at the facilities at 17 ± 3...
August 16, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28822479/next-generation-insect-resistant-plants-rnai-mediated-crop-protection
#15
REVIEW
Jiang Zhang, Sher Afzal Khan, David G Heckel, Ralph Bock
Plant-mediated RNA interference (RNAi) shows great potential in crop protection. It relies on plants stably expressing double-stranded RNAs (dsRNAs) that target essential genes in pest insects. Practical application of this strategy is challenging because producing sufficient amounts of stable dsRNA in plants has proven to be difficult to achieve with conventional transgenesis. In addition, many insects do not respond to exogenously applied dsRNAs, either degrading them or failing to import them into the cytoplasm...
September 2017: Trends in Biotechnology
https://www.readbyqxmd.com/read/28822408/-the-application-of-artificial-neural-network-on-the-assessment-of-lexical-tone-production-of-pediatric-cochlear-implant-users
#16
Y T Mao, Z M Chen, L Xu
Objective: The present study was carried out to explore the tone production ability of the Mandarin-speaking children with cochlear implants (CI) by using an artificial neural network model and to examine the potential contributing factors underlining their tone production performance. The results of this study might provide useful guidelines for post-operative rehabilitation processes of pediatric CI users. Methods: Two hundred and seventy-eight prelingually deafened children who received unilateral CI participated in this study...
August 7, 2017: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/28822300/drinking-water-to-reduce-alcohol-craving-a-randomized-controlled-study-on-the-impact-of-ghrelin-in-mediating-the-effects-of-forced-water-intake-in-alcohol-addiction
#17
Anne Koopmann, Katharina Lippmann, Rilana Schuster, Iris Reinhard, Patrick Bach, Georg Weil, Marcella Rietschel, Stephanie H Witt, Klaus Wiedemann, Falk Kiefer
BACKGROUND: Recent data suggest that ghrelin is involved in the pathophysiology of alcohol use disorders, affecting alcohol self-administration and craving. Gastric ghrelin secretion is reduced by stomach distension. We now tested the hypothesis whether the clinically well-known effects of high-volume water intake on craving reduction in alcoholism is mediated by acute changes in ghrelin secretion. METHODS: In this randomized human laboratory study, we included 23 alcohol-dependent male inpatient subjects who underwent alcohol cue exposure...
August 5, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28822273/ligand-binding-characterization-of-simulated-%C3%AE-adrenergic-like-octopamine-receptor-in-schistocerca-gregaria-via-progressive-structure-simulation
#18
Hui-Meng Lu, Xiao-Li Lu, Jia-Hui Zhai, Ren-Bin Zhou, Yan-Li Qin, Jing-Di Li, Chen-Yan Zhang, Jian-Yu Shi
It is important to design insecticides having both low drug resistance and less undesirable toxicity for desert locust control. Specific GPCRs of Schistocerca gregaria, especially β-adrenergic-like octopamine receptor (SgOctβR), can be considered as its potential effective insecticide targets. However, either the unavailability of SgOctβR's structure or the inadequate capability of its sequence lead the development of insecticide for Schistocerca gregaria meets its plateau. To relax this difficulty, this paper develops a promising progressive structure simulation from SgOctβR's sequence, to its predicted structure of SgOctβR in vacuum, to its conformation as well as its complex with endogenous ligand octopamine in a solvent-membrane system...
July 27, 2017: Journal of Molecular Graphics & Modelling
https://www.readbyqxmd.com/read/28822174/-biological-assay-in-quality-control-of-animal-medicines
#19
REVIEW
Xuan Wang, Luo-Dan Ouyang, Chun-Mei Dai, Li Ma, Xiao-He Xiao
Animal medicine is a unique part of traditional Chinese medicine. They have strong effects, but their effective compounds are not entirely known. The efficiency and safety of animal medicines can't be effectively controlled by current quality assurance system and evaluation method, which has deeply influenced the development of animal medicines. Biological assay does not focus on efficacy of single component, but directly reflects the pharmacodynamics and safety of animal medicines by biological effect. With the development of biotechnology, many new technologies have emerged, such as biochip and high content analysis...
June 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28822169/-effect-factors-and-mechanisms-of-borneol-s-bidirectional-regulation-on-blood-brain-barrier-permeability
#20
Hong-Jin Wang, Jun-Jie Wu, Qiang Xue, Ji-Fen Zhang, Xiao-Yu Xu
In recent twenty years, there are a lot of studies about the effect of borneol on permeability of blood-brain barrier(BBB); however, it isDODOrt of regular conclusions of effect factors and in-depth analysis of functional mechanisms. The current researching data were collected and analyzed in this paper for illuminating the effect factors and mechanisms of borneol on permeability of BBB.The following conclusions were obtained: five factors about borneol influencing the permeability of BBB. First, opticity activity of borneol had no significant effect on action effects...
June 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
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