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https://www.readbyqxmd.com/read/28231417/genetic-and-genomic-evidence-of-niche-partitioning-and-adaptive-radiation-in-mountain-pine-beetle-fungal-symbionts
#1
Dario I Ojeda Alayon, Clement K M Tsui, Nicolas Feau, Arnaud Capron, Braham Dhillon, Yiyuan Zhang, Sepideh Massoumi Alamouti, Celia K Boone, Allan L Carroll, Janice E K Cooke, Amanda D Roe, Felix A H Sperling, Richard C Hamelin
Bark beetles form multipartite symbiotic associations with blue stain fungi (Ophiostomatales, Ascomycota). These symbionts play an important role during the beetle's life cycle by providing nutritional supplementation, overcoming tree defenses and modifying host tissues to favor brood development. The maintenance of stable multipartite symbioses with seemingly less competitive symbionts in similar habitats is of fundamental interest to ecology and evolution. We tested the hypothesis that the coexistence of three fungal species associated with the mountain pine beetle is the result of niche partitioning and adaptive radiation using SNP genotyping coupled with genotype-environment association analysis and phenotypic characterization of growth rate under different temperatures...
February 23, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28228076/transdermal-drug-delivery-opportunities-and-challenges-for-controlled-delivery-of-therapeutic-agents-using-nanocarriers
#2
Balak Das Kurmi, Pawan Tekchandani, Rishi Paliwal, Shivani Rai Paliwal
BACKGROUND: Transdermal drug delivery represents an extremely attractive and innovative route across the skin owing to the possibility for achieving systemic effect of drugs. Present scenario demands a special focus on developing safe medicine with minimize toxic adverse effects related to most of the pharmacologically active agents. Transdermal drug delivery would be a focal paradigm which provides patient convenience, first-pass hepatic metabolism avoidance, local targeting and reduction in toxic effect related to various categories of drugs like, analgesics, anti-inflammatory, antibiotics, antiviral, anaesthetic, anticancer etc...
February 22, 2017: Current Drug Metabolism
https://www.readbyqxmd.com/read/28211483/colonisation-in-social-species-the-importance-of-breeding-experience-for-dispersal-in-overcoming-information-barriers
#3
A Payo-Payo, M Genovart, A Sanz-Aguilar, J L Greño, M García-Tarrasón, A Bertolero, J Piccardo, D Oro
Studying colonisation is crucial to understand metapopulations, evolutionary ecology and species resilience to global change. Unfortunately, few empirical data are available because field monitoring that includes empty patches at large spatiotemporal scales is required. We examine the colonisation dynamics of a long-lived seabird over 34 years in the western Mediterranean by comparing population and individual data from both source colony and the newly-formed colonies. Since social information is not available, we hypothesize that colonisation should follow particular dispersal dynamics and personal information must be crucial in decision making...
February 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28211230/associations-between-children-s-diet-quality-and-watching-television-during-meal-or-snack-consumption-a-systematic-review
#4
REVIEW
Amanda Avery, Catherine Anderson, Fiona McCullough
Studies have identified an association between watching television (TV) and childhood obesity. This review adds context to existing research by examining the associations between TV viewing, whilst eating, and children's diet quality. Web of Science and PubMed databases were searched from January 2000 to June 2014. Cross-sectional trials of case control or cohort studies, which included baseline data, measuring the associations between eating whilst watching TV and children's food and drink intake. Quality of selected papers was assessed...
February 17, 2017: Maternal & Child Nutrition
https://www.readbyqxmd.com/read/28188349/on-line-dynamic-extraction-system-hyphenated-to-inductively-coupled-plasma-optical-emission-spectrometry-for-automatic-determination-of-oral-bioaccessible-trace-metal-fractions-in-airborne-particulate-matter
#5
Victoria Mohr, Manuel Miró, Andreas Limbeck
For a realistic evaluation of the potential hazard emanating from airborne particulate matter (APM), the determination of the total inhaled metal amounts associated with APM is insufficient in risk assessment. Additional information about metal fractions that can be mobilized by the human body is necessary, because only those soluble (also called bioaccessible) fractions can be absorbed by the human body, and thus potentially cause adverse health effects. In the present study, a dynamic flow-through approach as a front end to inductively coupled plasma optical emission spectrometry (ICP-OES) exploiting advanced flow analysis is employed for on-line handling of multiple APM samples and determination of bioaccessible trace metals under worst case extraction scenarios...
February 10, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28187759/supporting-adherence-to-oral-anticancer-agents-clinical-practice-and-clues-to-improve-care-provided-by-physicians-nurse-practitioners-nurses-and-pharmacists
#6
Lonneke Timmers, Christel C L M Boons, Mathieu Verbrugghe, Bart J F van den Bemt, Ann Van Hecke, Jacqueline G Hugtenburg
BACKGROUND: Healthcare provider (HCP) activities and attitudes towards patients strongly influence medication adherence. The aim of this study was to assess current clinical practices to support patients in adhering to treatment with oral anticancer agents (OACA) and to explore clues to improve the management of medication adherence. METHODS: A cross-sectional, observational study among HCPs in (haemato-)oncology settings in Belgium and the Netherlands was conducted in 2014 using a composite questionnaire...
February 10, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28186470/image-guidance-based-on-mri-for-spinal-interstitial-laser-thermotherapy-technical-aspects-and-accuracy
#7
Claudio E Tatsui, Clarissa N G Nascimento, Dima Suki, Behrang Amini, Jing Li, Amol J Ghia, Jonathan G Thomas, R Jason Stafford, Laurence D Rhines, Juan P Cata, Ashok J Kumar, Ganesh Rao
OBJECTIVE Image guidance for spinal procedures is based on 3D-fluoroscopy or CT, which provide poor visualization of soft tissues, including the spinal cord. To overcome this limitation, the authors developed a method to register intraoperative MRI (iMRI) of the spine into a neuronavigation system, allowing excellent visualization of the spinal cord. This novel technique improved the accuracy in the deployment of laser interstitial thermal therapy probes for the treatment of metastatic spinal cord compression...
February 10, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28174390/-surgical-regeneration-therapy-using-myoblast-sheets-for-severe-heart-failure
#8
Yoshiki Sawa
Heart failure is a life-threatening disorder worldwide, and the current end-stage therapies for severe heart failure are replacement therapies such as ventricular-assist devices and heart transplantation. Although these therapies have been reported to be useful, there are many issues in terms of the durability, complications, limited donors, adverse effect of continuous administration of immunosuppressive agents, and high costs involved. Recently, regenerative therapy based on genetic, cellular, or tissue engineering techniques has gained attention as a new therapy to overcome the challenges encountered in transplantation medicine...
January 2017: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/28165823/nanocarriers-as-treatment-modalities-for-hypertension
#9
Tausif Alam, Saba Khan, Bharti Gaba, Md Faheem Haider, Sanjula Baboota, Javed Ali
Hypertension, a worldwide epidemic at present, is not a disease in itself rather it is an important risk factor for serious cardiovascular disorders including myocardial infarction, stroke, heart failure, and peripheral artery disease. Though numerous drugs acting via different mechanism of action are available in the market as conventional formulations for the treatment of hypertension but they face substantial challenges regarding their bioavailability, dosing and associated adverse effects which greatly limit their therapeutic efficacies...
November 2017: Drug Delivery
https://www.readbyqxmd.com/read/28165213/polysulfide-anchoring-mechanism-revealed-by-atomic-layer-deposition-of-v2o5-and-sulfur-filled-carbon-nanotubes-for-lithium-sulfur-batteries
#10
Rachel E Carter, Landon Oakes, Nitin Muralidharan, Adam P Cohn, Anna Douglas, Cary L Pint
Despite the promise of surface engineering to address the challenge of polysulfide shuttling in sulfur-carbon composite cathodes, melt infiltration techniques limit mechanistic studies correlating engineered surfaces and polysulfide anchoring. Here, we present a controlled experimental demonstration of polysulfide anchoring using vapor phase isothermal processing to fill the interior of carbon nanotubes (CNTs) after assembly into binder-free electrodes and atomic layer deposition (ALD) coating of polar V2O5 anchoring layers on the CNT surfaces...
February 6, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28163598/ssr-marker-assisted-screening-of-commercial-tomato-genotypes-under-salt-stress
#11
Charfeddine Gharsallah, Ahmed Ben Abdelkrim, Hatem Fakhfakh, Amel Salhi-Hannachi, Faten Gorsane
Salt stress was applied to tomato commercial genotypes to study adverse effects on their phenotypic traits. Three were saline tolerant (San Miguel, Romelia and Llanero), two were mildly tolerant (Perfect peel HF1 and Heinz 1350) whereas the remaining were sensitive. Genotyping cultivars using 19 polymorphic SSRs out of 25 tested produced a total of 70 alleles with an average of 3.68 alleles per locus and PIC values ranging from 0.22 (SSR 26, 92, 66 and TG35) to 0.82 (SSR 356). Principal component analysis (PCA) showed two contrasting panels discriminating tolerant and sensitive groups and one panel with scattered genotypes...
December 2016: Breeding Science
https://www.readbyqxmd.com/read/28159194/optimal-same-day-platelet-inhibition-in-patients-receiving-drug-eluting-stents-with-or-without-previous-maintenance-thienopyridine-therapy-from-the-evaluation-of-platelet-inhibition-in-patients-having-a-verifynow-assay-epiphany-trial
#12
Michael S Lee, Evan Shlofmitz, Elizabeth Haag, Lyn Santiago, Simcha Pollack, Nathaniel Reichek, Richard A Shlofmitz
We determined if high on-treatment platelet reactivity (HTPR) can be overcome on the day of percutaneous coronary intervention (PCI) in patients with or without previous maintenance thienopyridine therapy. Patients with HTPR, as defined as P2Y12 reaction units (PRU) >230, were switched to an alternate thienopyridine. Patients with HTPR undergoing PCI are at increased risk for ischemic complications. A total of 429 patients undergoing PCI with drug-eluting stents were enrolled. Patients on maintenance thienopyridine (n = 249) with PRU >230 were loaded with the alternative thienopyridine...
January 5, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28155940/synergistic-chemotherapeutic-effect-of-sorafenib-loaded-pullulan-dox-conjugate-nanoparticles-against-murine-breast-carcinoma
#13
Junhui Sui, Yani Cui, Hanxu Cai, Shaoquan Bian, Zhiyi Xu, Ling Zhou, Yong Sun, Jie Liang, Yujiang Fan, Xingdong Zhang
pH-Sensitive pullulan-doxorubicin conjugates encapsulating sorafenib (P-Dox/S) nanoparticles were developed as a synergistic combinatorial delivery system against murine breast carcinoma. The nanoparticles can encapsulate Dox and sorafenib with ultra-high loading capacity (65.34 wt%) through chemical conjugation and physical loading, whereas can remain stable under physiological conditions and gradually release Dox and sorafenib with the decreasing pH. These conjugates can be effectively internalized and clearly suppress 4T1 cell growth in vitro...
February 3, 2017: Nanoscale
https://www.readbyqxmd.com/read/28155335/design-of-amphotericin-b-oral-formulation-for-antifungal-therapy
#14
Min Liu, Meiwan Chen, Zhiwen Yang
Amphotericin B (AmB) remains the "gold standard" for systemic antifungal therapy, even though new drugs are emerging as the attractive antifungal agents. Since AmB has negligible oral absorption as a consequence of its unfavorable physicochemical characterizations, its use is restricted to parenteral administration which is accompanied by severe side effects. As greater understanding of the gastrointestinal tract has developed, the advanced drug delivery systems are emerging with the potential to overcome the barriers of AmB oral delivery...
November 2017: Drug Delivery
https://www.readbyqxmd.com/read/28153771/b-cell-function-gene-mutations-in-diffuse-large-b-cell-lymphoma-a-retrospective-cohort-study
#15
Peng-Peng Xu, Hui-Juan Zhong, Yao-Hui Huang, Xiao-Dong Gao, Xia Zhao, Yang Shen, Shu Cheng, Jin-Yan Huang, Sai-Juan Chen, Li Wang, Wei-Li Zhao
Diffuse large B-cell lymphoma (DLBCL) is a heterogeneous subtype of non-Hodgkin lymphoma. In addition to clinical and immunophenotypic characteristics, recurrent gene mutations have recently been identified in patients with DLBCL using next-generation sequencing technologies. The aim of this study is to investigate the clinical relevance of B-cell function gene mutations in DLBCL. Clinical analysis was performed on 680 Chinese DLBCL patients (146 non-CR and 534 CR cases) treated with six cycles of 21-day R-CHOP (Rituximab, cyclophosphamide, doxorubicin, vincristine, and prednisone), alone or followed by two additional doses of rituximab consolidation on patients' own intention...
January 21, 2017: EBioMedicine
https://www.readbyqxmd.com/read/28150746/rapid-cell-separation-with-minimal-manipulation-for-autologous-cell-therapies
#16
Alban J Smith, Richard D O'Rorke, Akshay Kale, Roberts Rimsa, Matthew J Tomlinson, Jennifer Kirkham, A Giles Davies, Christoph Wälti, Christopher D Wood
The ability to isolate specific, viable cell populations from mixed ensembles with minimal manipulation and within intra-operative time would provide significant advantages for autologous, cell-based therapies in regenerative medicine. Current cell-enrichment technologies are either slow, lack specificity and/or require labelling. Thus a rapid, label-free separation technology that does not affect cell functionality, viability or phenotype is highly desirable. Here, we demonstrate separation of viable from non-viable human stromal cells using remote dielectrophoresis, in which an electric field is coupled into a microfluidic channel using shear-horizontal surface acoustic waves, producing an array of virtual electrodes within the channel...
February 2, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28150078/adapting-and-validating-the-family-resilience-assessment-scale-in-an-afrikaans-rural-community-in-south-africa
#17
Serena Ann Isaacs, Nicolette Vanessa Roman, Shazly Savahl, Xin-Cheng Sui
A family resilience framework understands families as having the potential to not only face adversities but to overcome them; although its measurement is not always agreed upon. The aim of this study is to explain the processes involved in the adaptation of the 54-item family resilience assessment scale into Afrikaans, and to further examine its psychometric properties. Data were collected via the door-to-door method with the assistance of fieldworkers in two rounds. The pilot sample included 82 participants whilst the larger study included 656 participants...
February 1, 2017: Community Mental Health Journal
https://www.readbyqxmd.com/read/28150074/a-phase-ii-study-of-carboplatin-plus-weekly-paclitaxel-with-bevacizumab-for-elderly-patients-with-non-squamous-non-small-cell-lung-cancer-nej016
#18
Satoru Miura, Makoto Maemondo, Akira Iwashima, Toshiyuki Harada, Shunichi Sugawara, Kunihiko Kobayashi, Akira Inoue, Taku Nakagawa, Yuichi Takiguchi, Hiroshi Watanabe, Takashi Ishida, Masaki Terada, Hiroshi Kagamu, Akihiko Gemma, Hirohisa Yoshizawa
Background The efficacy and safety of bevacizumab in elderly patients with non-small cell lung cancer remain controversial. This study focused on both selecting fit elderly patients and overcoming interpatient variability with respect to pharmacodynamics. Methods Elderly (age: ≥70 years) patients with advanced non-squamous non-small cell lung cancer were enrolled. Patients with uncontrolled congestive heart failure and uncontrolled diabetes were excluded. The treatment regimen comprised carboplatin at an area under the curve of 5 mg/ml/min on day 1, paclitaxel at 90 mg/m(2) on days 1 and 8, and bevacizumab at 15 mg/kg on day 1 every 21 days for up to 4 cycles, followed by maintenance bevacizumab...
February 1, 2017: Investigational New Drugs
https://www.readbyqxmd.com/read/28149025/comparison-of-patient-ventilator-asynchrony-during-pressure-support-ventilation-and-proportional-assist-ventilation-modes-in-surgical-intensive-care-unit-a-randomized-crossover-study
#19
Parshotam Lal Gautam, Gaganjot Kaur, Sunil Katyal, Ruchi Gupta, Preetveen Sandhu, Nikhil Gautam
BACKGROUND: The patient-ventilator asynchrony is almost observed in all modes of ventilation, and this asynchrony affects lung mechanics adversely resulting in deleterious outcome. Innovations and advances in ventilator technology have been trying to overcome this problem by designing newer modes of ventilation. Pressure support ventilation (PSV) is a commonly used flow-cycled mode where a constant pressure is delivered by ventilator. Proportional assist ventilation (PAV) is a new dynamic inspiratory pressure assistance and is supposed to be better than PSV for synchrony and tolerance, but reports are still controversial...
December 2016: Indian Journal of Critical Care Medicine
https://www.readbyqxmd.com/read/28143741/orally-targeted-delivery-of-tripeptide-kpv-via-hyaluronic-acid-functionalized-nanoparticles-efficiently-alleviates-ulcerative-colitis
#20
Bo Xiao, Zhigang Xu, Emilie Viennois, Yuchen Zhang, Zhan Zhang, Mingzhen Zhang, Moon Kwon Han, Yuejun Kang, Didier Merlin
Overcoming adverse effects and selectively delivering drug to target cells are two major challenges in the treatment of ulcerative colitis (UC). Lysine-proline-valine (KPV), a naturally occurring tripeptide, has been shown to attenuate the inflammatory responses of colonic cells. Here, we loaded KPV into hyaluronic acid (HA)-functionalized polymeric nanoparticles (NPs). The resultant HA-KPV-NPs had a desirable particle size (∼272.3 nm) and a slightly negative zeta potential (∼-5.3 mV). These NPs successfully mediated the targeted delivery of KPV to key UC therapy-related cells (colonic epithelial cells and macrophages)...
January 28, 2017: Molecular Therapy: the Journal of the American Society of Gene Therapy
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