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https://www.readbyqxmd.com/read/28892302/cancer-targeted-selenium-nanoparticles-sensitize-cancer-cells-to-continuous-%C3%AE-radiation-to-achieve-synergetic-chemo-radiotherapy
#1
Leung Chan, Lizhen He, Binwei Zhou, Shouhai Guan, Mingjun Bo, Yahui Yang, Ying Liu, Xiao Liu, Yanyang Zhang, Qiang Xie, Tianfeng Chen
Cancer radiotherapy with 125I seeds demonstrates long-term higher efficacy and lower side effects than traditional X-ray radiotherapy due to its low-dose and continuous radiation but is still limited by radioresistance in clinical applications. Therefore, the design and synthesis for sensitizers that could enhance the sensitivity of cancer cells to 125I seeds is of great importance for future radiotherapy. Selenium nanoparticles (SeNPs) have been found to exhibit high potential in cancer chemotherapy and as drug carriers...
September 11, 2017: Chemistry, An Asian Journal
https://www.readbyqxmd.com/read/28884683/characterisation-of-the-biflavonoid-hinokiflavone-as-a-pre-mrna-splicing-modulator-that-inhibits-senp
#2
Andrea Pawellek, Ursula Ryder, Triin Tammsalu, Lewis J King, Helmi Kreinin, Tony Ly, Ronald T Hay, Richard Hartley, Angus I Lamond
We have identified the plant biflavonoid hinokiflavone as an inhibitor of splicing in vitro and modulator of alternative splicing in cells. Chemical synthesis confirms hinokiflavone is the active molecule. Hinokiflavone inhibits splicing in vitro by blocking spliceosome assembly, leading to accumulation of the A complex. Cells treated with hinokiflavone show altered subnuclear organization specifically of splicing factors required for A complex formation, which relocalize together with SUMO1 and SUMO2 into enlarged nuclear speckles...
September 8, 2017: ELife
https://www.readbyqxmd.com/read/28880681/synthesis-and-antioxidant-properties-of-lycium-barbarum-polysaccharides-capped-selenium-nanoparticles-using-tea-extract
#3
Wenjing Zhang, Juan Zhang, Dejun Ding, Liping Zhang, Luis Alexandre Muehlmann, Shu-E Deng, Xuedong Wang, Wentong Li, Weifen Zhang
Selenium nanoparticles (SeNPs) have attracted increasing interest over the last decades because of their activities on redox balance in human body. However, the SeNPs tend to aggregate into large clusters, resulting in lower bioactivity, bioavailability and biocompatibility. Surface-capping agents on SeNPs play crucial roles in its stabilization and biological activity. Here, a green synthesis method for the preparation of Lycium barbarum polysaccharides capped SeNPs using green tea extracts as reductants under mild conditions, at room temperature, is reported...
September 7, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/28859809/selenium-nanoparticle-enriched-biomass-of-yarrowia-lipolytica-enhances-growth-and-survival-of-artemia-salina
#4
Faseela Hamza, Amogh Vaidya, Mugdha Apte, Ameeta Ravi Kumar, Smita Zinjarde
Controlling disease outbreaks is a major challenge in aquaculture farms and conventional methods are often ineffective. Nutritional supplementation and probiotic preparations help in reducing severity of such infections. The generally regarded as safe yeast (Yarrowia lipolytica) was used in the current study. A marine strain of Y. lipolytica exhibited tolerance towards sodium selenite and formed cell associated selenium nanoparticles (SeNPs). The synthesized nanoparticles were characterized by UV-vis spectroscopy, X-ray diffraction (XRD) and Field Emission Scanning Electron Microscope (FE-SEM) observations...
November 2017: Enzyme and Microbial Technology
https://www.readbyqxmd.com/read/28783048/exploring-the-behavior-and-metabolic-transformations-of-senps-in-exposed-lactic-acid-bacteria-effect-of-nanoparticles-coating-agent
#5
Maria Palomo-Siguero, Yolanda Madrid
The behavior and transformation of selenium nanoparticles (SeNPs) in living systems such as microorganisms is largely unknown. To address this knowledge gap, we examined the effect of three types of SeNP suspensions toward Lactobacillus delbrueckii subsp. bulgaricus LB-12 using a variety of techniques. SeNPs were synthesized using three types of coating agents (chitosan (CS-SeNPs), hydroxyethyl cellulose (HEC-SeNPs) and a non-ionic surfactant, surfynol (ethoxylated-SeNPs)). Morphologies of SeNPs were all spherical...
August 5, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28718286/functionalized-selenium-nanosystem-as-radiation-sensitizer-of-125-i-seeds-for-precise-cancer-therapy
#6
Yahui Yang, Qiang Xie, Zhennan Zhao, Lizhen He, Leung Chan, Yingxiang Liu, Yongle Chen, Mingjun Bai, Tao Pan, Yanni Qu, Long Ling, Tianfeng Chen
Although radiotherapy has been extensively applied in cancer treatment, external beam radiation therapy is still unable to avoid damage to adjacent normal tissues in the process of delivering a sufficient radiation dose to the tumor sites of patients. To overcome this limitation, chemoradiotherapy, as a combination of chemotherapy and radiotherapy of a radioactive seed, has been proposed to decrease the damage to tumor-surrounding tissues and enhance the radiosensitivity of solid tumors. In this study, we designed and synthesized folic acid-conjugated selenium nanoparticles (FA@SeNPs) as a cancer-targeting agent that could be synergistically enhanced by radioactive (125)I seeds to realize anticancer efficacy and inhibited colony formation ability...
August 9, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28691127/selenium-nanoparticles-with-low-level-ionizing-radiation-exposure-ameliorate-nicotine-induced-inflammatory-impairment-in-rat-kidney
#7
Walid E Zahran, Sawsan M Elsonbaty, Fatma S M Moawed
Occupational exposure to low-level ionizing radiation (<1 Gy) was shown to enhance cell protection via attenuating an established inflammatory process. Nicotine, a major toxic component of cigarette smoke, is responsible for smoking-mediated renal dysfunction. The present study was therefore aimed to investigate the protective impact of ginger Zingiber officinale selenium nanoparticles (SeNPs) with whole-body low-dose gamma radiation (γ-R) against nicotine-induced nephrotoxicity in male albino rats. Nicotine intoxication was induced with 0...
July 9, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28684913/preparation-and-antioxidant-properties-of-selenium-nanoparticles-loaded-chitosan-microspheres
#8
Kaikai Bai, Bihong Hong, Jianlin He, Zhuan Hong, Ran Tan
Selenium nanoparticles (SeNPs), as a special form of selenium (Se) supplement, have attracted worldwide attention due to their favorable properties and unique bioactivities. Herein, an eco-friendly and economic way to prepare stable SeNPs is introduced. SeNPs were synthesized in aqueous chitosan (CTS) and then embedded into CTS microspheres by spray-drying, forming selenium nanoparticles-loaded chitosan microspheres (SeNPs-M). The physicochemical properties including morphology, elemental state, size distribution and surface potential were investigated...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28627216/gu%C3%A3-a-de-pr%C3%A3-ctica-cl%C3%A3-nica-senpe-seghnp-sefh-sobre-nutrici%C3%A3-n-parenteral-pedi%C3%A3-trica
#9
Consuelo Pedrón Giner, Margarita Cuervas-Mons Vendrell, Rafael Galera Martínez, Lilianne Gómez López, Pilar Gomis Muñoz, Iñaki Irastorza Terradillos, Cecilia Martínez Costa, José Manuel Moreno Villares, Cleofé Pérez-Portabella Maristany, M ª Teresa Pozas Del Río, Susana E Redecillas Ferreiro, Gerardo Prieto Bozano, Senpe Grupo de Estandarización de la Senpe
Introducción:la nutrición parenteral (NP) en la infancia es un tratamiento cuyas características son muy variables en función de la edad y la patología que presente el paciente.Material y métodos: el grupo de Estandarización y Protocolos de la Sociedad Española de Nutrición Parenteral y Enteral (SENPE) es un grupo interdisciplinar formado por miembros de la SENPE, Sociedad Española de Gastroenterología, Hepatología y Nutrición Pediátrica (SEGHNP) y Sociedad Española de Farmacia Hospitalaria (SEFH) que pretende poner al día este tema...
June 5, 2017: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/28607388/aerobic-biogenesis-of-selenium-nanoparticles-by-enterobacter-cloacae-z0206-as-a-consequence-of-fumarate-reductase-mediated-selenite-reduction
#10
Deguang Song, Xiaoxiao Li, Yuanzhi Cheng, Xiao Xiao, Zeqing Lu, Yizhen Wang, Fengqin Wang
In the present study, we examined the ability of Enterobacter cloacae Z0206 to reduce toxic sodium selenite and mechanism of this process. E. cloacae Z0206 was found to completely reduce up to 10 mM selenite to elemental selenium (Se°) and form selenium nanoparticles (SeNPs) under aerobic conditions. The selenite reducing effector of E. cloacae Z0206 cell was to be a membrane-localized enzyme. iTRAQ proteomic analysis revealed that selenite induced a significant increase in the expression of fumarate reductase...
June 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28592284/biogenic-selenium-nanoparticles-induce-ros-mediated-necroptosis-in-pc-3-cancer-cells-through-tnf-activation
#11
Praveen Sonkusre, Swaranjit Singh Cameotra
BACKGROUND: Selenium is well documented to inhibit cancer at higher doses; however, the mechanism behind this inhibition varies widely depending on the cell type and selenium species. Previously, we have demonstrated that Bacillus licheniformis JS2 derived biogenic selenium nanoparticles (SeNPs) induce non-apoptotic cell death in prostate adenocarcinoma cell line, PC-3, at a minimal concentration of 2 µg Se/ml, without causing toxicity to the primary cells. However, the mechanism behind its anticancer activity was elusive...
June 7, 2017: Journal of Nanobiotechnology
https://www.readbyqxmd.com/read/28572579/trichogenic-selenium-nanoparticles-enhance-disease-suppressive-ability-of-trichoderma-against-downy-mildew-disease-caused-by-sclerospora-graminicola-in-pearl-millet
#12
Boregowda Nandini, Puttaswamy Hariprasad, Harischandra Sripathy Prakash, Hunthrike Shekar Shetty, Nagaraja Geetha
Trichoderma spp. are well known biocontrol agents used against phytopathogens. In the present work Trichoderma-mediated Selenium nanoparticles (SeNPs) were synthesized and extent of downy mildew (DM) disease control in pearl millet (PM) was studied. Six species of Trichoderma namely, T. asperellum, T. harzianum, T. atroviride, T. virens, T. longibrachiatum and T. brevicompactum were evaluated in the form of culture filtrate (CF), cell lysate (CL) and crude cell wall (CW) to synthesize SeNPs. All these components produced SeNPs, but CF was significant than CL and CW...
June 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28549896/concordance-among-methods-of-nutritional-assessment-in-patients-included-on-the-waiting-list-for-liver-transplantation
#13
María Teresa García-Rodríguez, Beatriz López-Calviño, María Del Carmen Piñón-Villar, Alejandra Otero-Ferreiro, Francisco Suárez-López, Manuel Gómez-Gutiérrez, Sonia Pértega-Díaz, María Teresa Seoane-Pillado, Salvador Pita-Fernández
BACKGROUND: The aim of the present study was to determine the extent of malnutrition in patients waiting for a liver transplant. The agreement among the methods of nutritional assessment and their diagnostic validity were evaluated. METHODS: Patients on the waiting list for liver transplantation (n = 110) were studied. The variables were: body mass index, analytical parameters, liver disease etiology, and complications. Liver dysfunction was evaluated using the Child-Pugh Scale...
October 2017: Journal of Epidemiology
https://www.readbyqxmd.com/read/28539272/selenium-nanoparticles-as-versatile-carriers-for-oral-delivery-of-insulin-insight-into-the-synergic-antidiabetic-effect-and-mechanism
#14
Wenji Deng, Qian Xie, Huan Wang, Zhiguo Ma, Baojian Wu, Xingwang Zhang
Oral insulin delivery has been plagued by limited bioavailability. This work reports selenium nanoparticles (SeNPs) for oral insulin delivery to overcome the absorption barrier. Insulin-loaded SeNPs (INS-SeNPs) were fabricated by ionic cross-linking/in situ reduction and characterized by particle size and drug entrapment. The resultant INS-SeNPs were 120nm around in particle size with high drug loading. INS-SeNPs exhibited controllable insulin release and outstanding stability in the digestive fluids. INS-SeNPs caused a significant hypoglycemic effect in both normal and diabetic rats...
May 21, 2017: Nanomedicine: Nanotechnology, Biology, and Medicine
https://www.readbyqxmd.com/read/28510423/phycocyanin-functionalized-selenium-nanoparticles-reverse-palmitic-acid-induced-pancreatic-%C3%AE-cell-apoptosis-by-enhancing-cellular-uptake-and-blocking-reactive-oxygen-species-ros-mediated-mitochondria-dysfunction
#15
Chang Liu, Yuanting Fu, Chang-E Li, Tianfeng Chen, Xiaoling Li
Accumulation of palmitic acid (PA) in human bodies could cause damage to pancreatic β cells and lead to chronic diseases by generation of reactive oxygen species (ROS). Therefore, it is of great significance to search for nutrition-available agents with antioxidant activity to protect pancreatic islet cells against PA-induced damage. Phycocyanin (PC) and selenium (Se) have been reported to have excellent antioxidant activity. In this study, PC-functionalized selenium nanoparticles (PC-SeNPs) were synthesized to investigate the in vitro protective effects on INS-1E rat insulinoma β cells against PA-induced cell death...
June 7, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28485612/comunicaciones-p%C3%A3-steres
#16
Comunicaciones Pósteres Congreso Nacional Senpe
No abstract text is available yet for this article.
April 28, 2017: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/28485611/comunicaciones-orales
#17
Comunicaciones Orales Congreso Nacional Senpe
No abstract text is available yet for this article.
April 28, 2017: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/28429743/novel-sumo-protease-senp7s-regulates-%C3%AE-catenin-signaling-and-mammary-epithelial-cell-transformation
#18
Samaneh Karami, Feng-Ming Lin, Santosh Kumar, Shaymaa Bahnassy, Hariprasad Thangavel, Maram Quttina, Yue Li, Jing Ren, Tasneem Bawa-Khalfe
SUMO post-translational modification of proteins or SUMOylation ensures normal cell function. Disruption of SUMO dynamics prompts various pathophysiological conditions, including cancer. The burden of deSUMOylating the large SUMO-proteome rests on 6 full-length mammalian SUMO-proteases or SENP. While multiple SENP isoforms exist, the function of these isoforms remains undefined. We now delineate the biological role of a novel SENP7 isoform SENP7S in mammary epithelial cells. SENP7S is the predominant SENP transcript in human mammary epithelia but is significantly reduced in precancerous ductal carcinoma in situ and all breast cancer subtypes...
April 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28421778/estimaci%C3%A3-n-del-coste-de-la-nutrici%C3%A3-n-parenteral-domiciliaria-en-espa%C3%A3-a
#19
Rosa Burgos Peláez, María Nuria Virgili Casas, María Cristina Cuerda Compés, José Manuel Moreno Villares, Gabriel Olveira, Luis Miguel Luengo Pérez, Carmina Wanden-Berghe Lozano, Álvaro Muñoz Cuadrado, Covadonga Torres González, Miguel Ángel Casado Gómez
Introducción: la nutrición parenteral domiciliaria (NPD) mejora la calidad de vida de los pacientes permitiéndoles recibir nutrición en su domicilio y facilitando su integración social y laboral.Objetivo: analizar el coste de la NPD en España.Métodos: se realizó una revisión bibliográfica de los Registros de NPD en España (años 2007-2014), elaborados por el Grupo NADYA-SENPE. Se analizó la evolución de: pacientes que requerían NPD, episodios/paciente por los que se administró NPD, duración media de los episodios, vías de acceso y tasa de complicaciones...
March 30, 2017: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/28386534/scaffold-of-selenium-nanovectors-and-honey-phytochemicals-for-inhibition-of-pseudomonas-aeruginosa-quorum-sensing-and-biofilm-formation
#20
Prateeksha, Braj R Singh, M Shoeb, S Sharma, A H Naqvi, Vijai K Gupta, Brahma N Singh
Honey is an excellent source of polyphenolic compounds that are effective in attenuating quorum sensing (QS), a chemical process of cell-to-cell communication system used by the opportunistic pathogen Pseudomonas aeruginosa to regulate virulence and biofilm formation. However, lower water solubility and inadequate bioavailability remains major concerns of these therapeutic polyphenols. Its therapeutic index can be improved by using nano-carrier systems to target QS signaling potently. In the present study, we fabricated a unique drug delivery system comprising selenium nanoparticles (SeNPs; non-viral vectors) and polyphenols of honey (HP) for enhancement of anti-QS activity of HP against P...
2017: Frontiers in Cellular and Infection Microbiology
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