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https://www.readbyqxmd.com/read/28636660/cellular-sensitivity-to-uv-irradiation-is-mediated-by-rna-polymerase-i-transcription
#1
Robin Assfalg, Marius Costel Alupei, Maximilian Wagner, Sylvia Koch, Omar Garcia Gonzalez, Adrian Schelling, Karin Scharffetter-Kochanek, Sebastian Iben
The nucleolus has long been considered to be a pure ribosome factory. However, over the last two decades it became clear that the nucleolus is involved in numerous other functions besides ribosome biogenesis. Our experiments indicate that the activity of RNA polymerase I (Pol I) transcription monitors the integrity of the DNA and influences the response to nucleolar stress as well as the rate of survival. Cells with a repressed ribosomal DNA (rDNA) transcription activity showed an increased and prolonged p53 stabilisation after UVC-irradiation...
2017: PloS One
https://www.readbyqxmd.com/read/28636270/c-reactive-protein-and-progression-of-vision-loss-in-retinitis-pigmentosa
#2
Yusuke Murakami, Yasuhiro Ikeda, Shunji Nakatake, Kohta Fujiwara, Takashi Tachibana, Noriko Yoshida, Shoji Notomi, Toshio Hisatomi, Shigeo Yoshida, Tatsuro Ishibashi, Koh-Hei Sonoda
PURPOSE: Chronic inflammation is involved in retinitis pigmentosa (RP). We demonstrated previously that intraocular inflammatory levels, as measured by slit-lamp ophthalmoscopy or laser flare photometry, are inversely correlated with central visual function in patients with RP. Here, we investigated the relationship between serum high-sensitivity C-reactive protein (hs-CRP) and visual parameters in RP. METHODS: We studied 58 consecutive typical patients with RP <40 years old and 29 age- and gender-matched controls...
June 21, 2017: Acta Ophthalmologica
https://www.readbyqxmd.com/read/28635569/stratification-model-based-on-early-postprostatectomy-prostate-specific-antigen-kinetics-may-help-to-reduce-the-risk-of-overtreatment-in-candidates-for-adjuvant-radiotherapy
#3
Stepan Vesely, Ladislav Jarolim, Marek Schmidt, Joana Do Carmo Silva, Katerina Duskova, Marko Babjuk
OBJECTIVE: The aim of this study was to construct a stratification model based on early postoperative kinetics of prostate-specific antigen (PSA) to select the most suitable high-risk patients for early intervention after radical prostatectomy (RP). MATERIALS AND METHODS: The study evaluated 205 men who had undergone RP without any adjuvant treatment. All of the patients had positive surgical margins, extracapsular extension and/or seminal vesicle invasion. The patients underwent multiple ultrasensitive PSA measurements on days 14, 30, 60 and 90 after RP, and subsequently at 3 month intervals...
February 24, 2017: Scandinavian Journal of Urology
https://www.readbyqxmd.com/read/28635255/characterization-and-immunomodulatory-activity-of-a-novel-peptide-ecfsta-from-wheat-germ-globulin
#4
Wenjia Wu, Mengmeng Zhang, Yao Ren, Xinze Cai, Zhina Yin, Xiaoai Zhang, Tian Min, Hui Wu
A novel peptide was extracted from wheat germ globulin and purified using ion-exchange chromatography, gel filtration chromatography and semi-preparative reverse phase-high performance liquid chromatography (RP-HPLC). The sequence of the peptide was found to be Glu-Cys-Phe-Ser-Thr-Ala (ECFSTA). Its immunomodulatory effects were evaluated, and the results showed that ECFSTA could enhance phagocytosis of RAW 264.7 cells and significantly increase their secretion of nitric oxide (NO), interleukins-6 (IL-6), tumor necrosis factors-α (TNF-α), and reactive oxygen species (ROS)...
June 21, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28634850/novel-vitamin-b12-producing-enterococcus-spp-and-preliminary-in-vitro-evaluation-of-probiotic-potentials
#5
Ping Li, Qing Gu, Yuejiao Wang, Yue Yu, Lanlan Yang, Jieyan V Chen
Vitamin B12 is an essential nutrient required for crucial metabolic processes in humans. Vitamin B12-producing lactic acid bacteria (LAB) have been attracting increased attentions currently because of the generally recognized as safe (GRAS) status. Most of recent studies focused on Lactobacillus, and little is known about B12-producing Enterococcus. In the present study, five Enterococcus strains isolated from infant feces were identified as vitamin B12 producers. Among them, Enterococcus faecium LZ86 had the highest B12 production (499...
June 20, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28634114/peanut-digestome-identification-of-digestion-resistant-ige-binding-peptides
#6
Luigia Di Stasio, Gianluca Picariello, Mariantonietta Mongiello, Rita Nocerino, Roberto Berni Canani, Simona Bavaro, Linda Monaci, Pasquale Ferranti, Gianfranco Mamone
Stability to proteolytic degradation in the digestive tract is considered a general feature shared by most food allergens. Current digestibility models exclusively utilize purified allergen proteins, neglecting the relevant effects of matrix that occur for foodstuff systems. In the present study, we investigated digestion stability of the major peanut allergens directly in the natural matrix using an in vitro static model that simulates the gastrointestinal digestion including the oral, gastric, duodenal and intestinal (brush border membrane enzymes) phases...
June 17, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28633930/phospholipase-a2-in-the-venom-of-three-cottonmouth-snake-species
#7
Ying Jia, Boris Ermolinsky, Aryana Garza, Daniele Provenzano
Two phospholipase A2s (PLA2s), Asp49 (D49) and Lys49 (K49), were purified by one-step reverse-phase high performance liquid chromatography (RP-HPLC) from the venom of each of the three subspecies of cottonmouth snake, Western cottonmouth (Agkistrodon piscivorus leucostoma; Apl), Eastern cottonmouth (Agkistrodon piscivorus piscivorus; App) and Florida cottonmouth (Agkistrodon piscivorus conanti; Apc). Venom protein profiles and PLA2s elution pattern of the three cottonmouth snakes were remarkably similar displaying four similar sharp and two wide peaks; in all cases K49 PLA2 eluted first followed by D49 PLA2...
June 17, 2017: Toxicon: Official Journal of the International Society on Toxinology
https://www.readbyqxmd.com/read/28633819/effects-of-ultrasound-pretreatment-with-different-frequencies-and-working-modes-on-the-enzymolysis-and-the-structure-characterization-of-rice-protein
#8
Xue Yang, Yunliang Li, Suyun Li, Ayobami Olayemi Oladejo, Siyu Ruan, Yucheng Wang, Shanfen Huang, Haile Ma
The effects of ultrasound pretreatment with different frequencies and working modes, including mono-frequency ultrasound (MFU), dual-frequency ultrasound (DFU) and tri-frequency ultrasound (TFU), on the degree of hydrolysis (DH) of rice protein (RP) and angiotensin-I-converting enzyme (ACE) inhibitory activity of RP hydrolysate were investigated. Ultraviolet-visible (UV) spectroscopy, fourier transform infrared (FTIR) spectroscopy, surface hydrophobicity and scanning electron microscopy (SEM) of RP pretreated with ultrasound were measured...
September 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28632034/recombinant-human-nerve-growth-factor-treatment-promotes-photoreceptor-survival-in-the-retinas-of-rats-with-retinitis-pigmentosa
#9
Marta Sacchetti, Flavio Mantelli, Maria Luisa Rocco, Alessandra Micera, Laura Brandolini, Laura Focareta, Claudio Pisano, Luigi Aloe, Alessandro Lambiase
PURPOSE: Increasing evidence suggests that nerve growth factor (NGF) exerts protective effects against retinal degeneration in animal models of retinitis pigmentosa (RP). This study aims at investigating the effects of intravitreal injection of recombinant human NGF (rhNGF) on retinal photoreceptors apoptosis in an animal model of RP, the Royal College of Surgeons (RCS) rats. METHODS: Thirty-six RCS rats were treated with intravitreal injection of rhNGF or murine NGF (mNGF) or vehicle at 20 postnatal days (pd) and sacrificed at 40 pd...
March 1, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28631720/contemporary-management-of-men-with-high-risk-localized-prostate-cancer-in-the-united-states
#10
A B Weiner, R S Matulewicz, E M Schaeffer, S L Liauw, J M Feinglass, S E Eggener
BACKGROUND: Surgery and radiation-based therapies are standard management options for men with clinically localized high-risk prostate cancer (PCa). Contemporary patterns of care are unknown. We hypothesize the use of surgery has steadily increased in more recent years. METHODS: Using the National Cancer Data Base for 2004-2013, all men diagnosed with high-risk localized PCa were identified using National Comprehensive Cancer Network criteria. Temporal trends in initial management were assessed...
June 20, 2017: Prostate Cancer and Prostatic Diseases
https://www.readbyqxmd.com/read/28629025/polycaprolactone-and-polycaprolactone-ceramic-based-3d-bioplotted-porous-scaffolds-for-bone-regeneration-a-comparative-study
#11
K K Gómez-Lizárraga, C Flores-Morales, M L Del Prado-Audelo, M A Álvarez-Pérez, M C Piña-Barba, C Escobedo
One of the critical challenges that scaffolding faces in the organ and tissue regeneration field lies in mimicking the structure, and the chemical and biological properties of natural tissue. A high-level control over the architecture, mechanical properties and composition of the materials in contact with cells is essential to overcome such challenge. Therefore, definition of the method, materials and parameters for the production of scaffolds during the fabrication stage is critical. With the recent emergence of rapid prototyping (RP), it is now possible to create three-dimensional (3D) scaffolds with the essential characteristics for the proliferation and regeneration of tissues, such as porosity, mechanical strength, pore size and pore interconnectivity, and biocompatibility...
October 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28625740/comparative-proteomic-analysis-of-two-transgenic-low-gliadin-wheat-lines-and-non-transgenic-wheat-control
#12
María Dolores García-Molina, Vera Muccilli, Rosaria Saletti, Salvatore Foti, Stefania Masci, Francisco Barro
Gluten proteins are major determinants of the bread making quality of wheat, but also of important wheat-related disorders, including coeliac disease (CD), and allergies. We carried out a proteomic study using the total grain proteins from two low-gliadin wheat lines, obtained by RNAi, and the untransformed wild type as reference. The impact of silencing on both target and on non-target proteins was evaluated. Because of the great protein complexity, we performed separate analyses of four kernel protein fractions: gliadins and glutenin subunits, and metabolic and CM-like proteins, by using a classical 2D electrophoresis gel based approach followed by RP-HPLC/nESI-MS/MS...
June 15, 2017: Journal of Proteomics
https://www.readbyqxmd.com/read/28625553/heterogeneous-ribosomes-preferentially-translate-distinct-subpools-of-mrnas-genome-wide
#13
Zhen Shi, Kotaro Fujii, Kyle M Kovary, Naomi R Genuth, Hannes L Röst, Mary N Teruel, Maria Barna
Emerging studies have linked the ribosome to more selective control of gene regulation. However, an outstanding question is whether ribosome heterogeneity at the level of core ribosomal proteins (RPs) exists and enables ribosomes to preferentially translate specific mRNAs genome-wide. Here, we measured the absolute abundance of RPs in translating ribosomes and profiled transcripts that are enriched or depleted from select subsets of ribosomes within embryonic stem cells. We find that heterogeneity in RP composition endows ribosomes with differential selectivity for translating subpools of transcripts, including those controlling metabolism, cell cycle, and development...
June 7, 2017: Molecular Cell
https://www.readbyqxmd.com/read/28625507/contemporary-patterns-of-care-and-outcomes-of-men-found-to-have-lymph-node-metastases-at-the-time-of-radical-prostatectomy
#14
Piotr Zareba, James Eastham, Peter T Scardino, Karim Touijer
PURPOSE: A thorough understanding of the natural history and consensus regarding the optimal management of pathologic lymph node-positive (pN1) prostate cancer are lacking. Our objective was to describe patterns of care and outcomes of a contemporary cohort of men with pN1 prostate cancer. MATERIALS AND METHODS: The National Cancer Data Base (NCDB) was used to identify 7,791 men who were found to have LN metastases at the time of radical prostatectomy (RP). Multinomial logistic regression and Cox proportional hazards regression were used to identify patient, tumor and facility characteristics associated with choice of post-RP management strategy and overall survival (OS), respectively...
June 15, 2017: Journal of Urology
https://www.readbyqxmd.com/read/28625149/stability-indicating-reverse-phase-hplc-method-for-estimation-of-rifampicin-and-piperine-in-pharmaceutical-dosage-form
#15
Umang H Shah, Shraddha Patel, Manan Raval
BACKGROUND: High performance liquid chromatography is an integral analytical tool in assessing drug product stability. HPLC methods should be able to separate, detect, and quantify the various drug-related degradants that can form on storage or manufacturing, plus detect and any drug-related impurities that may be introduced during synthesis. OBJECTIVE: A simple, economic, selective, precise, and stability-indicating HPLC method has been developed and validated for analysis of Rifampicin (RIFA) and Piperine (PIPE) in bulk drug and in the formulation...
June 18, 2017: Current Drug Discovery Technologies
https://www.readbyqxmd.com/read/28624415/aging-rather-than-aneuploidy-affects-monoamine-neurotransmitters-in-brain-regions-of-down-syndrome-mouse-models
#16
Alain D Dekker, Yannick Vermeiren, Christelle Albac, Eva Lana-Elola, Sheona Watson-Scales, Dorota Gibbins, Tony Aerts, Debby Van Dam, Elizabeth M C Fisher, Victor L J Tybulewicz, Marie-Claude Potier, Peter P De Deyn
Altered concentrations of monoamine neurotransmitters and metabolites have been repeatedly found in people with Down syndrome (DS, trisomy 21). Because of the limited availability of human post-mortem tissue, DS mouse models are of great interest to study these changes and the underlying neurobiological mechanisms. Although previous studies have shown the potential of Ts65Dn mice - the most widely used mouse model of DS - to model noradrenergic changes, a comprehensive monoaminergic characterization in multiple brain regions has not been performed so far...
June 14, 2017: Neurobiology of Disease
https://www.readbyqxmd.com/read/28623772/development-and-validation-of-a-highly-sensitive-lc-esi-ms-ms-method-for-estimation-of-iiim-mcd-211-a-novel-nitrofuranyl-methyl-piperazine-derivative-with-potential-activity-against-tuberculosis-application-to-drug-development
#17
Asmita Magotra, Anjna Sharma, Ajai Prakash Gupta, Priya Wazir, Shweta Sharma, Parvinder Pal Singh, Manoj Kumar Tikoo, Ram A Vishwakarma, Gurdarshan Singh, Utpal Nandi
In the present study, a simple, sensitive, specific and rapid liquid chromatography (LC) tandem mass spectrometry (MS/MS) method was developed and validated according to the Food and Drug Administration (FDA) guidelines for estimation of IIIM-MCD-211 (a potent oral candidate with promising action against tuberculosis) in mice plasma using carbamazepine as internal standard (IS). Bioanalytical method consisted of one step protein precipitation for sample preparation followed by quantitation in LC-MS/MS using positive electrospray ionization technique (ESI) operating in multiple reaction monitoring (MRM) mode...
June 8, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28623653/miniaturized-temperature-controlled-planar-chromatography-micro-tlc-as-a-versatile-technique-for-fast-screening-of-micropollutants-and-biomarkers-derived-from-surface-water-ecosystems-and-during-technological-processes-of-wastewater-treatment
#18
Magdalena M Ślączka-Wilk, Elżbieta Włodarczyk, Aleksandra Kaleniecka, Paweł K Zarzycki
There is increasing interest in the development of simple analytical systems enabling the fast screening of target components in complex samples. A number of newly invented protocols are based on quasi separation techniques involving microfluidic paper-based analytical devices and/or micro total analysis systems. Under such conditions, the quantification of target components can be performed mainly due to selective detection. The main goal of this paper is to demonstrate that miniaturized planar chromatography has the capability to work as an efficient separation and quantification tool for the analysis of multiple targets within complex environmental samples isolated and concentrated using an optimized SPE method...
June 16, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/28622831/impact-of-postoperative-radiotherapy-in-men-with-persistently-elevated-prostate-specific-antigen-after-radical-prostatectomy-for-prostate-cancer-a-long-term-survival-analysis
#19
Giorgio Gandaglia, Stephen A Boorjian, William P Parker, Emanuele Zaffuto, Nicola Fossati, Marco Bandini, Paolo Dell'Oglio, Nazareno Suardi, Francesco Montorsi, R Jeffrey Karnes, Alberto Briganti
BACKGROUND: Prostate cancer (PCa) patients with prostate-specific antigen (PSA) persistence after radical prostatectomy (RP) are at increased risk of mortality, although the natural history of these men is heterogeneous and the optimal management has not been established. OBJECTIVE: To develop a model to predict cancer-specific mortality (CSM) and to test the impact of radiotherapy (RT) on survival in this setting. DESIGN, SETTING, AND PARTICIPANTS: We identified 496 patients treated with RP and lymph node dissection at two referral centers between 1994 and 2014 who had PSA persistence, defined as a PSA level between 0...
June 13, 2017: European Urology
https://www.readbyqxmd.com/read/28620325/reduced-consolidation-reinstatement-and-renewal-of-conditioned-fear-memory-by-repetitive-treatment-of-radix-polygalae-in-mice
#20
Jung-Won Shin, Hyunwoo Park, Yoonju Cho, Suck Lee, Jiwon Yoon, Sungho Maeng
The therapeutic goal for the treatment of posttraumatic stress disorder (PTSD) is to promote extinction and to prevent the relapse of fearful memories. Research has identified pharmacological treatments that may regulate the formation and extinction of fear memories, but not many reagents that block the relapse of extinguished fear are known. Radix Polygalae (RP) is an Asian herb used for sedation, and its ingredients have anxiolytic and antidepressant properties. As various neurological effects have been identified, we tested whether RP affects the relapse of fear...
2017: Frontiers in Psychiatry
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