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https://www.readbyqxmd.com/read/27933726/inheritance-of-evolved-clethodim-resistance-in-lolium-rigidum-populations-from-australia
#1
Rupinder Kaur Saini, Jenna Malone, Gurjeet Gill, Christopher Preston
BACKGROUND: In Australia, the extensive use of clethodim for the control of Lolium rigidum has resulted in the evolution of many clethodim-resistant L.rigidum populations. Five clethodim-resistant populations of L. rigidum were analysed for the inheritance of clethodim resistance. RESULTS: Reciprocal crosses were made between resistant (R) and susceptible (S) populations. Within crosses, dose responses of reciprocal F1 families of all populations, except A61 were similar each other, indicating clethodim resistance in these populations is encoded on the nuclear genome...
December 8, 2016: Pest Management Science
https://www.readbyqxmd.com/read/27933724/comparative-analysis-reveals-amino-acids-critical-for-anticancer-activity-of-peptide-cigb-552
#2
Soledad Astrada, Yolanda Gomez, Exequiel Barrera, Gonzalo Obal, Otto Pritsch, Sergio Pantano, Maribel G Vallespí, Mariela Bollati-Fogolín
Because of resistance development by cancer cells against current anticancer drugs, there is a considerable interest in developing novel antitumor agents. We have previously demonstrated that CIGB-552, a novel cell-penetrating synthetic peptide, was effective in reducing tumor size and increasing lifespan in tumor-bearing mice. Studies of protein-peptide interactions have shown that COMMD1 protein is a major mediator of CIGB-552 antitumor activity. Furthermore, a typical serine-protease degradation pattern for CIGB-552 in BALB/c mice serum was identified, yielding peptides which differ from CIGB-552 in size and physical properties...
November 2016: Journal of Peptide Science: An Official Publication of the European Peptide Society
https://www.readbyqxmd.com/read/27933657/analysis-of-temozolomide-resistance-in-low-grade-gliomas-by-using-a-mechanistic-mathematical-model
#3
Edouard Ollier, Pauline Mazzocco, Damien Ricard, Gentian Kaloshi, Ahmed Idbaih, Agusti Alentorn, Dimitri Psimaras, Jérôme Honnorat, Jean-Yves Delattre, Emmanuel Grenier, François Ducray, Adeline Samson
Understanding how tumours develop resistance to chemotherapy is a major issue in oncology. When treated with temozolomide (TMZ), an oral alkylating chemotherapy drug, most low-grade gliomas (LGG) show an initial volume decrease but this effect is rarely long lasting. In addition, it has been suggested that TMZ may drive tumour progression in a subset of patients as a result of acquired resistance. Using longitudinal tumour size measurements from 121 patients, the aim of the present study was to develop a semi-mechanistic mathematical model to determine whether resistance of LGG to TMZ was more likely to result from primary and/or from chemotherapy-induced acquired resistance that may contribute to tumour progression...
December 9, 2016: Fundamental & Clinical Pharmacology
https://www.readbyqxmd.com/read/27933650/up-regulation-of-microrna-133a-inhibits-the-mek-erk-signaling-pathway-to-promote-cell-apoptosis-and-enhance-radio-sensitivity-by-targeting-egfr-in-esophageal-cancer-in-vivo-and-in-vitro
#4
Qing-Shan Yang, Li-Peng Jiang, Chun-Yan He, Yu-Na Tong, Yuan-Yuan Liu
This study aims to explore how microRNA-133a (miR-133a) affects cell apoptosis and radio-sensitivity by targeting EGFR via regulating MEK/ERK pathway in esophageal cancer (EC). A total of 358 EC patients were selected and assigned into the resistant and sensitive groups. Human EC KYSE 150 cell line was assigned into the blank, negative control (NC), miR-133a mimic, miR-133a inhibitors, si-EGFR, miR-133a inhibitors + si-EGFR groups after transfection. MiR-133a and EGFR mRNA expressions were detected by qRT-PCR and EGFR, MEK/ERK pathway-related protein expressions were detected by Western blotting...
December 8, 2016: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/27933614/antiviral-agents-for-infectious-mononucleosis-glandular-fever
#5
REVIEW
Muireann De Paor, Kirsty O'Brien, Tom Fahey, Susan M Smith
BACKGROUND: Infectious mononucleosis (IM) is a clinical syndrome, usually caused by the Epstein Barr virus (EPV), characterised by lymphadenopathy, fever and sore throat. Most cases of symptomatic IM occur in older teenagers or young adults. Usually IM is a benign self-limiting illness and requires only symptomatic treatment. However, occasionally the disease course can be complicated or prolonged and lead to decreased productivity in terms of school or work. Antiviral medications have been used to treat IM, but the use of antivirals for IM is controversial...
December 8, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/27933604/chemoresistant-lung-cancer-stem-cells-display-high-dna-repair-capability-to-remove-cisplatin-dna-damage
#6
Wai-Kin Yu, Zhigang Wang, Chi-Chun Fong, Dandan Liu, Tak-Chun Yip, Siu-Kie Au, Guangyu Zhu, Mengsu Yang
BACKGROUND AND PURPOSE: The persistence of lung cancer stem cells (LCSCs) has been proposed to be the main factor of lung cancer recurrence due to their high resistance to conventional chemotherapy. The underlying mechanisms, however, have not been fully addressed. EXPERIMENTAL APPROACH: In this study, we examined the cellular response of a human lung cancer stem cell line upon treatment with cisplatin, a DNA-damaging anticancer drug that is extensively applied in clinics...
December 9, 2016: British Journal of Pharmacology
https://www.readbyqxmd.com/read/27933586/preparation-and-optimization-of-meropenem-loaded-solid-lipid-nanoparticles-in-vitro-evaluation-and-molecular-modeling
#7
Ellen K G Mhango, Rahul S Kalhapure, Mahantesh Jadhav, Sandeep J Sonawane, Chunderika Mocktar, Suresh Vepuri, Mahmoud Soliman, Thirumala Govender
Encapsulation of antibiotics into nanocarriers has the potential to overcome resistance and disadvantages associated with conventional dosage forms as well as increase half-life of an antibiotic. Encapsulation of meropenem (MRPN) into solid lipid nanoparticles (SLNs) remains unexplored among the limited work reported on nanoformulation incorporating MRPN. The study aimed to use an experimental design, to optimize MRPN-loaded SLNs, and to undertake in vitro and in silico evaluations. A Box-Behnken design (BBD) was used to optimize manufacturing conditions of glycerol monostearate (GMS) SLNs loaded with MRPN...
December 8, 2016: AAPS PharmSciTech
https://www.readbyqxmd.com/read/27933529/qtl-mapping-and-identification-of-candidate-genes-in-do-mice-a-use-case-model-derived-from-a-benzene-toxicity-experiment
#8
Dan Gatti, John E French, Klaus Schughart
Diversity Outbred (DO) mice are a multiparental advanced generation intercross population derived from eight inbred strains which are genetically very diverse. They are maintained as an outbred population using a randomized mating design. Thus DO mice represent an ideal population to map phenotypic traits. Here, we provide a case study in which male DO mice were exposed to benzene and phenotyped for the number of micronucleated reticulocytes. We provide step-by-step R scripts for the analysis of phenotypes, genotypes, mapping of resistance gene loci and identification of candidate genes...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27933459/four-reasons-why-assisted-dying-should-not-be-offered-for-depression
#9
Thomas Blikshavn, Tonje Lossius Husum, Morten Magelssen
Recently, several authors have argued that assisted dying may be ethically appropriate when requested by a person who suffers from serious depression unresponsive to treatment. We here present four arguments to the contrary. First, the arguments made by proponents of assisted dying rely on notions of "treatment-resistant depression" that are problematic. Second, an individual patient suffering from depression may not be justified in believing that chances of recovery are minimal. Third, the therapeutic significance of hope must be acknowledged; when mental healthcare opens up the door to admitting hopelessness, there is a danger of a self-fulfilling prophecy...
December 8, 2016: Journal of Bioethical Inquiry
https://www.readbyqxmd.com/read/27933455/exploration-of-genetic-and-phenotypic-diversity-within-saccharomyces-uvarum-for-driving-strain-improvement-in-winemaking
#10
Alexandra Verspohl, Lisa Solieri, Paolo Giudici
The selection and genetic improvement of wine yeast is an ongoing process, since yeast strains should match new technologies in winemaking to satisfy evolving consumer preferences. A large genetic background is the necessary starting point for any genetic improvement programme. For this reason, we collected and characterized a large number of strains belonging to Saccharomyces uvarum. In particular, 70 strains were isolated from cold-stored must samples: they were identified and compared to S. uvarum strains originating from different collections, regarding fermentation profile, spore viability and stress response...
December 8, 2016: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/27933450/effects-of-exercise-intervention-in-breast-cancer-patients-is-mobile-health-mhealth-with-pedometer-more-effective-than-conventional-program-using-brochure
#11
Kyeong Eun Uhm, Ji Sung Yoo, Seung Hyun Chung, Jong Doo Lee, Ilkyun Lee, Joong Il Kim, Se Kyung Lee, Seok Jin Nam, Yong Hyun Park, Ji Youl Lee, Ji Hye Hwang
PURPOSE: To investigate and compare the effects of mobile health (mHealth) and pedometer with conventional exercise program using a brochure on physical function and quality of life (QOL). METHODS: The study was a prospective, quasi-randomized multicenter trial where 356 patients whose cancer treatment had been terminated were enrolled. All patients were instructed to perform a 12-week regimen of aerobic and resistance exercise. The mHealth group received a pedometer and a newly developed smartphone application to provide information and monitor the prescribed exercises...
December 8, 2016: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/27933435/ranolazine-promotes-muscle-differentiation-and-reduces-oxidative-stress-in-c2c12-skeletal-muscle-cells
#12
Terruzzi Ileana, Montesano Anna, Senesi Pamela, Vacante Fernanda, Benedini Stefano, Luzi Livio
PURPOSE: The purpose of this study is to investigate Ranolazine action on skeletal muscle differentiation and mitochondrial oxidative phenomena. Ranolazine, an antianginal drug, which acts blocking the late INaL current, was shown to lower hemoglobin A1c in patients with diabetes. In the present study, we hypothesized an action of Ranolazine on skeletal muscle cells regeneration and oxidative process, leading to a reduction of insulin resistance. METHODS: 10 μM Ranolazine was added to C2C12 murine myoblastic cells during proliferation, differentiation and newly formed myotubes...
December 8, 2016: Endocrine
https://www.readbyqxmd.com/read/27933408/twelve-weeks-progressive-resistance-training-combined-with-protein-supplementation-beyond-habitual-intakes-increases-upper-leg-lean-tissue-mass-muscle-strength-and-extended-gait-speed-in-healthy-older-women
#13
Peter Francis, William Mc Cormack, Clodagh Toomey, Catherine Norton, Jean Saunders, Emmet Kerin, Mark Lyons, Philip Jakeman
The age-related decline in functional capability is preceded by a reduction in muscle quality. The purpose of this study was to assess the combined effects of progressive resistance training (PRT) and protein supplementation beyond habitual intakes on upper leg lean tissue mass (LTM), muscle quality and functional capability in healthy 50-70 years women. In a single-blinded, randomized, controlled design, 57 healthy older women (age 61.1 ± 5.1 years, 1.61 ± 0.65 m, 65.3 ± 15.3 kg) consumed 0.33 g/kg body mass of a milk-based protein matrix (PRO) for 12 weeks...
December 8, 2016: Biogerontology
https://www.readbyqxmd.com/read/27933379/the-role-of-receptor-like-protein-kinases-rlks-in-abiotic-stress-response-in-plants
#14
REVIEW
Yaoyao Ye, Yanfei Ding, Qiong Jiang, Feijuan Wang, Junwei Sun, Cheng Zhu
We review and introduce recent studies on RLK s involved in the abiotic stress response and provide insights into potential regulatory mechanisms for alleviating abiotic stress. Abiotic stresses are important factors affecting plant growth and development, resulting in crop production reduction and even plant death. To survive, plants utilize different mechanisms to respond and adapt to continuously changing environmental factors. Understanding of the molecular mechanisms of plant response to various stresses will aid in improving tolerance of plants to abiotic stress through genetic engineering, which would greatly promote the development of modern agriculture...
December 8, 2016: Plant Cell Reports
https://www.readbyqxmd.com/read/27933336/shp-1-activation-inhibits-vascular-smooth-muscle-cell-proliferation-and-intimal-hyperplasia-in-a-rodent-model-of-insulin-resistance-and-diabetes
#15
Weier Qi, Qian Li, Chong Wee Liew, Christian Rask-Madsen, Samuel M Lockhart, Lars Melholt Rasmussen, Yu Xia, Xuanchun Wang, Mogher Khamaisi, Kevin Croce, George L King
AIMS/HYPOTHESIS: Accelerated migration and proliferation of vascular smooth muscle cells (VSMCs) enhances arterial restenosis after angioplasty in insulin resistance and diabetes. Elevation of Src homology 2-containing protein tyrosine phosphatase 1 (SHP-1) induces apoptosis in the microvasculature. However, the role of SHP-1 in intimal hyperplasia and restenosis has not been clarified in insulin resistance and diabetes. METHODS: We used a femoral artery wire injury mouse model, rodent models with insulin resistance and diabetes, and patients with type 2 diabetes...
December 9, 2016: Diabetologia
https://www.readbyqxmd.com/read/27933333/discriminatory-ability-of-simple-ogtt-based-beta-cell-function-indices-for-prediction-of-prediabetes-and-type-2-diabetes-the-codam-study
#16
Louise J C J den Biggelaar, Simone J S Sep, Simone J P M Eussen, Andrea Mari, Ele Ferrannini, Marleen M J van Greevenbroek, Carla J H van der Kallen, Casper G Schalkwijk, Coen D A Stehouwer, Pieter C Dagnelie
AIMS/HYPOTHESIS: The hyperglycaemic clamp technique and the frequently sampled IVGTT are unsuitable techniques to assess beta cell function (BCF) in large cohorts. Therefore, the aim of this study was to evaluate the discriminatory ability of simple OGTT-based BCF indices for prediction of prediabetes (meaning impaired fasting glucose and/or impaired glucose tolerance) and type 2 diabetes. METHODS: Glucose metabolism status was assessed by 2 h 75 g OGTT at baseline (n = 476, mean age 59...
December 8, 2016: Diabetologia
https://www.readbyqxmd.com/read/27933331/characterization-of-arsenic-biotransformation-by-a-typical-bryophyte-physcomitrella-patens
#17
Xixiang Yin, Lihong Wang, Yifei Liu, Tenglong Jiang, Jianwei Gao
Arsenic (As) is a ubiquitous environmental toxin that has created catastrophic human health and environmental problems around world. Physcomitrella patens is a potential model plant for the study of environmental monitoring, which exists in all kinds of ecosystems. In this study, arsenic metabolism was investigated by this moss. When supplied with different levels of arsenate (50, 100, 200 µmol/L) for a 4-week period, the total arsenic concentrations were up to 231.4-565.4 mg/kg DW in this moss. Arsenite concentration increased with increasing external arsenate concentrations, the proportion was up to 25...
December 8, 2016: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/27933316/systemic-therapy-with-oncolytic-myxoma-virus-cures-established-residual-multiple-myeloma-in-mice
#18
Eric Bartee, Mee Y Bartee, Bjarne Bogen, Xue-Zhong Yu
Multiple myeloma is an incurable malignancy of plasma B-cells. Traditional chemotherapeutic regimes often induce initial tumor regression; however, virtually all patients eventually succumb to relapse caused by either reintroduction of disease during autologous transplant or expansion of chemotherapy resistant minimal residual disease. It has been previously demonstrated that an oncolytic virus known as myxoma can completely prevent myeloma relapse caused by reintroduction of malignant cells during autologous transplant...
2016: Molecular Therapy Oncolytics
https://www.readbyqxmd.com/read/27933276/acinetobacter-baumannii-isolated-from-lebanese-patients-phenotypes-and-genotypes-of-resistance-clonality-and-determinants-of-pathogenicity
#19
Elias Dahdouh, Micheline Hajjar, Monica Suarez, Ziad Daoud
Introduction:Acinetobacter baumannii is a nosocomial pathogen that usually affects critically ill patients. High mortality rates have been associated with MDR A. baumannii infections. Carbapenem resistance among these isolates is increasing worldwide and is associated with certain International Clones (ICs) and oxacillinases (OXAs). Moreover, this organism possesses a wide range of virulence factors, whose expression is not yet fully understood. In this study, clinical A. baumannii isolates are characterized in terms of antibiotic resistance, mechanisms of carbapenem resistance, clonality, and virulence...
2016: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/27933201/association-between-metabolic-syndrome-and-liver-histology-among-nafld-patients-without-diabetes
#20
Pushpjeet Kanwar, James E Nelson, Katherine Yates, David E Kleiner, Aynur Unalp-Arida, Kris V Kowdley
BACKGROUND: Metabolic syndrome (MetS) and obesity are associated with non-alcoholic fatty liver disease (NAFLD). The aim of this observational study was to examine the relationship of MetS and a diagnosis of non-alcoholic steatohepatitis (NASH) in patients without diabetes in the NASH Clinical Research Network (CRN). METHODS: Clinical, demographic, histological, laboratory and anthropometric data were collected on 356 adult patients without diabetes with NAFLD. Obesity was defined as body mass index ≥30...
2016: BMJ Open Gastroenterology
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