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https://www.readbyqxmd.com/read/28528116/ph-controllable-cell-penetrating-polypeptide-possessing-cancer-targeting
#1
DaeYong Lee, IlKoo Noh, Jisang Yoo, N Sanoj Rejinold, Yeu-Chun Kim
Helical peptides were naturally-occurring ordered conformations that mediated various biological functions essential for biotechnology. However, it was difficult for natural helical polypeptides to be applied in biomedical fields due to low bioavailability. To avoid these problems, synthetic alpha-helical polypeptides have recently been introduced by further modifying pendants in the side chain. In spite of an attractive biomimetic helical motif, these systems could not be tailored for targeted delivery mainly due to nonspecific binding events...
May 17, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28527997/zinc-oxide-nanoparticles-mediated-cytotoxicity-mitochondrial-membrane-potential-and-level-of-antioxidants-in-presence-of-melatonin
#2
Sruthi S, N Millot, Mohanan Pv
Zinc oxide nanoparticles (ZnO NPs) are widely used in a variety of products and are currently being investigated for biomedical applications. However, they have the potential to interact with macromolecules like proteins, lipids and DNA within the cells which makes the safe biomedical application difficult. The toxicity of the ZnO NP is mainly attributed reactive oxygen species (ROS) generation. Different strategies like iron doping, polymer coating and external supply of antioxidants have been evaluated to minimize the toxic potential of ZnO NPs...
May 17, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28527892/outbreak-of-zika-virus-infection-in-singapore-an-epidemiological-entomological-virological-and-clinical-analysis
#3
(no author information available yet)
BACKGROUND: An outbreak of Zika virus infection was detected in Singapore in August, 2016. We report the first comprehensive analysis of a national response to an outbreak of Zika virus infection in Asia. METHODS: In the first phase of the outbreak, patients with suspected Zika virus infection were isolated in two national referral hospitals until their serum tested negative for the virus. Enhanced vector control and community engagement measures were deployed in disease clusters, including stepped-up mosquito larvicide and adulticide use, community participation in source reduction (destruction of mosquito breeding sites), and work with the local media to promote awareness of the outbreak...
May 17, 2017: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/28527520/recent-advances-in-smart-biotechnology-hydrogels-and-nanocarriers-for-tailored-bioactive-molecules-depot
#4
REVIEW
Gesmi Milcovich, Stefania Lettieri, Filipe E Antunes, Bruno Medronho, Ana C Fonseca, Jorge F J Coelho, Paolo Marizza, Francesca Perrone, Rossella Farra, Barbara Dapas, Gabriele Grassi, Mario Grassi, Silvia Giordani
Over the past ten years, the global biopharmaceutical market has remarkably grown, with ten over the top twenty worldwide high performance medical treatment sales being biologics. Thus, biotech R&D (research and development) sector is becoming a key leading branch, with expanding revenues. Biotechnology offers considerable advantages compared to traditional therapeutic approaches, such as reducing side effects, specific treatments, higher patient compliance and therefore more effective treatments leading to lower healthcare costs...
May 9, 2017: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/28527497/informatics-and-technology-in-resident-education
#5
REVIEW
William Niehaus
Biomedical or clinical informatics is the transdisciplinary field that studies and develops effective uses of biomedical data, information technology innovations, and medical knowledge for scientific inquiry, problem solving, and decision making, with an emphasis on improving human health. Given the ongoing advances in information technology, the field of informatics is becoming important to clinical practice and to residency education. This article will discuss how informatics is specifically relevant to residency education and the different ways to incorporate informatics into residency education, and will highlight applications of current technology in the context of residency education...
May 2017: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/28527412/early-stage-detection-of-ve-cadherin-during-endothelial-differentiation-of-human-mesenchymal-stem-cells-using-spr-biosensor
#6
Farzaneh Fathi, Aysa Rezabakhsh, Reza Rahbarghazi, Mohammad-Reza Rashidi
Surface plasmon resonance (SPR) biosensors are most commonly applied for real-time dynamic analysis and measurement of interactions in bio-molecular studies and cell-surface analysis without the need for labeling processes. Up to present, SPR application in stem cell biology and biomedical sciences was underused. Herein, a very simple and sensitive method was developed to evaluate human mesenchymal stem cells trans-differentiation to endothelial lineage of over a period of 14 days based on VE-cadherin biomarker...
May 10, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28527373/-i-don-t-believe-it-acceptance-and-skepticism-of-genetic-health-information-among-african-american-and-white-smokers
#7
Erika A Waters, Linda Ball, Sarah Gehlert
RATIONALE: Effective translation of genomics research into practice depends on public acceptance of genomics-related health information. OBJECTIVE: To explore how smokers come to accept or reject information about the relationship between genetics and nicotine addiction. METHODS: Thirteen focus groups (N = 84) were stratified by education (seven < Bachelor's degree, six ≥ Bachelor's degree) and race (eight black, five white). Participants viewed a 1-min video describing the discovery of a genetic variant associated with increased risk of nicotine addiction and lung cancer...
May 3, 2017: Social Science & Medicine
https://www.readbyqxmd.com/read/28527235/implementing-the-icf-in-occupational-health-building-a-curriculum-as-an-exemplary-case
#8
C P M de Brouwer, L G P M van Amelsvoort, Y F Heerkens, G A M Widdershoven, I J Kant
BACKGROUND: This paper addresses the need for a paradigm shift from post-diagnosis tertiary care towards maintenance and promotion of health across the lifespan, for healthcare in general and in occupational healthcare specifically. It is based on the assumption that the realization of this paradigm shift may be facilitated by teaching (future) occupational health professionals to use the International Classification of Functioning, Disability and Health (ICF). OBJECTIVE: Describing the development of a an ICF based occupational health curriculum...
May 17, 2017: Work: a Journal of Prevention, Assessment, and Rehabilitation
https://www.readbyqxmd.com/read/28527187/quantitative-stereological-analysis-of-the-highly-porous-hydroxyapatite-scaffolds-using-x-ray-cm-and-sem
#9
Justyna Zygmuntowicz, Aneta Zima, Joanna Czechowska, Karol Szlazak, Anna Ślosarczyk, Katarzyna Konopka
BACKGROUND: Material properties of the scaffolds as well as their microstructure are vital in determining in vivo cellular response. Three-dimensional (3D), highly porous scaffolds are used in tissue engineering to provide a suitable microenvironment and to support regeneration of bone. Both pore sizes and their architecture, in particular interconnection density, impact functionality of scaffold during its biomedical applications. OBJECTIVE: In this paper a comparative study of the microstructure of highly porous hydroxyapatite scaffolds produced via gelcasting of foamed slurries and replication of polyurethane sponge were carried out...
2017: Bio-medical Materials and Engineering
https://www.readbyqxmd.com/read/28527117/non-viral-and-viral-delivery-systems-for-crispr-cas9-technology-in-the-biomedical-field
#10
REVIEW
Zhi-Yao He, Ke Men, Zhou Qin, Yang Yang, Ting Xu, Yu-Quan Wei
The clustered regularly interspaced short palindromic repeats (CRISPR)-associated protein 9 (CRISPR-Cas9) system provides a novel genome editing technology that can precisely target a genomic site to disrupt or repair a specific gene. Some CRISPR-Cas9 systems from different bacteria or artificial variants have been discovered or constructed by biologists, and Cas9 nucleases and single guide RNAs (sgRNA) are the major components of the CRISPR-Cas9 system. These Cas9 systems have been extensively applied for identifying therapeutic targets, identifying gene functions, generating animal models, and developing gene therapies...
May 2, 2017: Science China. Life Sciences
https://www.readbyqxmd.com/read/28526447/toxicity-screening-of-a-novel-poly-methylmethacrylate-eudragit-nanocarrier-on-l929-fibroblasts
#11
Diogo Graça, Henriqueta Louro, Joana Santos, Kamila Dias, Lídia Gonçalves, António Almeida, Maria João Silva, Ana Bettencourt
Toxicity screening of a novel poly(methylmethacrylate)-Eudragit nanocarrier on L929 fibroblasts Translation of innovative drug delivery nanosystems into the market involves an early toxicity screening in the development phase. Previously, we showed that inclusion of the polymer (Eudragit, EUD) into poly(methylmethacrylate) (PMMA) nanoparticles (NP) resulted in a novel nanocarrier (PMMA-EUD) with an improved biomedical performance. The safety of this novel nanoparticulate system (PMMA-EUDNPs) was assessed in this work and compared to that of the original PMMANPs by using an integrated approach, comprising in vitro toxicity assessment and NPs physicochemical characterization in water and cell medium...
May 16, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/28526437/a-fiber-distribution-model-for-predicting-drug-release-rates
#12
D G Petlin, A A Amarah, S I Tverdokhlebov, Y G Anissimov
Sustained drug release can be achieved by loading a drug into polymer material. The drug release can then be controlled for potential use in various biomedical applications. A model for drug release from a polymeric fibrous scaffold, which takes into account the distribution of fiber diameters within its structure, is developed here. It is demonstrated that the fiber diameter distribution significantly affects the drug release profile from electrospun scaffolds. The developed model indicates that altering the fiber distribution can be used as an additional tool to achieve an appropriate drug release profile...
May 16, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28526340/unfolding-the-pathogenesis-of-scleroderma-through-genomics-and-epigenomics
#13
REVIEW
Pei-Suen Tsou, Amr H Sawalha
With unknown etiology, scleroderma (SSc) is a multifaceted disease characterized by immune activation, vascular complications, and excessive fibrosis in internal organs. Genetic studies, including candidate gene association studies, genome-wide association studies, and whole-exome sequencing have supported the notion that while genetic susceptibility to SSc appears to be modest, SSc patients are genetically predisposed to this disease. The strongest genetic association for SSc lies within the MHC region, with loci in HLA-DRB1, HLA-DQB1, HLA-DPB1, and HLA-DOA1 being the most replicated...
May 16, 2017: Journal of Autoimmunity
https://www.readbyqxmd.com/read/28526013/human-biomonitoring-from-an-environmental-justice-perspective-supporting-study-participation-of-women-of-turkish-and-moroccan-descent
#14
Bert Morrens, Elly Den Hond, Greet Schoeters, Dries Coertjens, Ann Colles, Tim S Nawrot, Willy Baeyens, Stefaan De Henauw, Vera Nelen, Ilse Loots
BACKGROUND: Environmental justice research shows how socially disadvantaged groups are more exposed and more vulnerable to environmental pollution. At the same time, these groups are less represented and, thus, less visible in biomedical studies. This socioeconomic participation bias is a form of environmental injustice within research practice itself. METHODS: We designed, implemented and evaluated a targeted recruitment strategy to enhance the participation of socially disadvantaged pregnant women in a human biomonitoring study in Belgium...
May 19, 2017: Environmental Health: a Global Access Science Source
https://www.readbyqxmd.com/read/28525935/design-synthesis-and-characterization-of-doped-titanium-oxide-nanomaterials-with-environmental-and-angiogenic-applications
#15
Susheel Kumar Nethi, Neeraja Aparna Anand P, Beatriz Rico-Oller, Antonio Rodríguez-Diéguez, Santiago Gómez-Ruiz, Chitta Ranjan Patra
Since the last decade, the metal composite nanostructures have evolved as promising candidates in regard to their wide applications in the fields of science and engineering. Recently, several investigators identified the titanium based nanomaterials as excellent agents for multifunctional environmental and biomedical applications. In this perspective, we have developed a series of zinc-doped (2 and 5%) titanium oxide-based nanomaterials using various reaction conditions and calcination temperatures (TZ1-TZ3: calcined at 500°C, TZ4-TZ6: calcined at 600°C and TZ7-TZ9: calcined at 700°C)...
May 15, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28525780/age-of-despair-or-age-of-hope-palestinian-women-s-perspectives-on-midlife-health
#16
Doaa Hammoudeh, Ernestina Coast, David Lewis, Yoke van der Meulen, Tiziana Leone, Rita Giacaman
There is limited evidence about women's experiences of the midlife, beyond a narrow - frequently biomedical - focus on the menopause. The broader (physical, social, cultural, political) dimensions of women's midlife health are poorly understood, particularly in low and middle-income countries. Our study seeks to understand how women in the West Bank (occupied Palestinian territories) conceptualise, experience and manage their health in the midlife. We generated qualitative evidence using in-depth life history interviews in 2015 with women (n = 35) living in the West Bank, analysed thematically...
May 11, 2017: Social Science & Medicine
https://www.readbyqxmd.com/read/28525746/silicon-valley-meets-biomedical-research-in-the-chan-zuckerberg-initiative
#17
Diana Crow
The Chan Zuckerberg Initiative, the philanthropy launched by Facebook CEO Mark Zuckerberg and his wife Priscilla Chan, drew attention with its stated goal of helping to "cure, manage, or treat all diseases" by the end of the century. They intend to do it through funding basic research and addressing gaps in biomedical technology.
May 18, 2017: Cell
https://www.readbyqxmd.com/read/28525715/ultra-small-magnetic-cufese2-ternary-nanocrystals-for-multimodal-imaging-guided-photothermal-therapy-of-cancer
#18
Xinxin Jiang, Shaohua Zhang, Feng Ren, Lei Chen, Jianfeng Zeng, Mo Zhu, Zhenxiang Cheng, Mingyuan Gao, Zhen Li
Nanoscale ternary chalcogenides have attracted intense research interest due to their wealth of tunable properties and diverse applications in energy, environmental and biomedical fields. In this article, ultra-small magnetic CuFeSe2 ternary nanocrystals (< 5.0 nm) were fabricated in the presence of thiol functionalized poly(methacrylic acid) (PTMP-PMAA) by an environmentally friendly aqueous method under ambient conditions. The small band gap and the existence of intermediate bands lead to a broad NIR absorbance in the range of 500 - 1100 nm, and high photothermal conversion efficiency (82%) of CuFeSe2 nanocrystals...
May 19, 2017: ACS Nano
https://www.readbyqxmd.com/read/28525578/cell-type-specific-genome-editing-with-a-microrna-responsive-crispr-cas9-switch
#19
Moe Hirosawa, Yoshihiko Fujita, Callum J C Parr, Karin Hayashi, Shunnichi Kashida, Akitsu Hotta, Knut Woltjen, Hirohide Saito
The CRISPR-Cas9 system is a powerful genome-editing tool useful in a variety of biotechnology and biomedical applications. Here we developed a synthetic RNA-based, microRNA (miRNA)-responsive CRISPR-Cas9 system (miR-Cas9 switch) in which the genome editing activity of Cas9 can be modulated through endogenous miRNA signatures in mammalian cells. We created miR-Cas9 switches by using a miRNA-complementary sequence in the 5΄-UTR of mRNA encoding Streptococcus pyogenes Cas9. The miR-21-Cas9 or miR-302-Cas9 switches selectively and efficiently responded to miR-21-5p in HeLa cells or miR-302a-5p in human induced pluripotent stem cells, and post-transcriptionally attenuated the Cas9 activity only in the target cells...
May 19, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28525526/critical-analysis-of-the-council-for-international-organizations-of-medical-sciences-2016-international-guidelines-for-health-related-research-involving-humans
#20
REVIEW
Miguel Hugo Kottow Lang
This paper presents a preliminary discussion of the Council for International Organizations of Medical Sciences (CIOMS), recently issued “International Ethical Guidelines for Health-related Research Involving Humans” (2016) that acknowledges the document’s declared concern of the protection of human subjects and awareness of their needs and interests in “low-resource settings”. Nevertheless, guideline recommendations present exceptional situations –vulnerability, mental incompetence- wherein voluntary and consented participation may be reduced or omitted under three concurrent conditions: compelling scientific value, the need to include persons that will not benefit directly from participation, exposure to minimal or slight risks...
May 15, 2017: Medwave
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