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https://www.readbyqxmd.com/read/28109001/polygonum-multiflorum-radix-extract-protects-human-foreskin-melanocytes-from-oxidative-stress-in-vitro-and-potentiates-hair-follicle-pigmentation-ex-vivo
#1
Peggy Sextius, Richard Betts, Ishak Benkhalifa, Stéphane Commo, Joan Eilstein, Marco Massironi, Ping Wang, Jean-Francois Michelet, Jie Qiu, Xuezhu Tan, Severine Jeulin
OBJECTIVE: To examine the ability of an extract from traditional Chinese medicine, Polygonum multiflorum Radix, to protect melanocyte viability from oxidative stress, a key mechanism in the initiation and progression of hair greying. METHODS: To assess the antioxidant capacity of Polygonum multiflorum Radix extract, primary human foreskin melanocytes were treated with a commercially available Polygonum multiflorum Radix extract added to culture medium and exposed to hydrogen peroxide (H2 O2 ), using intracellular reactive oxygen species concentrations and glutathione/protein ratios as endpoints...
January 20, 2017: International Journal of Cosmetic Science
https://www.readbyqxmd.com/read/28108416/symptoms-and-the-body-taking-the-inferential-leap
#2
REVIEW
Omer Van den Bergh, Michael Witthöft, Sibylle Petersen, Richard J Brown
The relationship between the conscious experience of physical symptoms and indicators of objective physiological dysfunction is highly variable and depends on characteristics of the person, the context and their interaction. This relationship often breaks down entirely in the case of "medically unexplained" or functional somatic symptoms, violating the basic assumption in medicine that physical symptoms have physiological causes. In this paper, we describe the prevailing theoretical approach to this problem and review the evidence pertaining to it...
January 17, 2017: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/28107939/a-sensitive-chemiluminescent-immunoassay-to-detect-chromotrope-fb-chr-fb-in-foods
#3
Kun Xu, Hao Long, Rongge Xing, Yongmei Yin, Sergei A Eremin, Meng Meng, Rimo Xi
Chromotrope FB (Chr FB) is a synthetic azo dye permitted for use in foods and medicines. An acceptable daily intake (ADI) of Chr FB was 0-0.5mg/kg in China. In this study, we synthesized a Chr FB hapten with an amino group to prepare its artificial immunogen. Polyclonal antibodies obtained from New Zealand rabbits were applied to develop an indirect competitive chemiluminescent immunoassay (icCLIA) to detect Chr FB in foods. A horseradish peroxidase (HRP)-luminol-H2O2 system was used to yield CL signal with p-iodophenol as an enhancement reagent...
March 1, 2017: Talanta
https://www.readbyqxmd.com/read/28107614/sirt1-dependent-anti-senescence-effects-of-cell-deposited-matrix-on-human-umbilical-cord-mesenchymal-stem-cells
#4
Long Zhou, Xi Chen, Tao Liu, Caihong Zhu, Michelle Si, Joseph Jargstorf, Mao Li, Guoqing Pan, Yihong Gong, Zong-Ping Luo, Huilin Yang, Ming Pei, Fan He
Human umbilical cord-derived mesenchymal stem cells (UC-MSCs) are considered an attractive cell source for tissue regeneration. However, environmental oxidative stress can trigger premature senescence in MSCs and thus compromises their regenerative potential. Extracellular matrix (ECM) derived from MSCs has been shown to facilitate cell proliferation and multilineage differentiation. This investigation evaluated the effect of cell-deposited decellularized ECM (DECM) on oxidative stress-induced premature senescence in UC-MSCs...
January 20, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28107475/review-and-analysis-of-publication-trends-over-three-decades-in-three-high-impact-medicine-journals
#5
Alexander Ivanov, Beata A Kaczkowska, Saadat A Khan, Jean Ho, Morteza Tavakol, Ashok Prasad, Geetha Bhumireddy, Allan F Beall, Igor Klem, Parag Mehta, William M Briggs, Terrence J Sacchi, John F Heitner
CONTEXT: Over the past three decades, industry sponsored research expanded in the United States. Financial incentives can lead to potential conflicts of interest (COI) resulting in underreporting of negative study results. OBJECTIVE: We hypothesized that over the three decades, there would be an increase in: a) reporting of conflict of interest and source of funding; b) percentage of randomized control trials c) number of patients per study and d) industry funding...
2017: PloS One
https://www.readbyqxmd.com/read/28107396/mixfit-methodology-for-computing-ancestry-related-genetic-scores-at-the-individual-level-and-its-application-to-the-estonian-and-finnish-population-studies
#6
Toomas Haller, Liis Leitsalu, Krista Fischer, Marja-Liisa Nuotio, Tõnu Esko, Dorothea Irene Boomsma, Kirsten Ohm Kyvik, Tim D Spector, Markus Perola, Andres Metspalu
Ancestry information at the individual level can be a valuable resource for personalized medicine, medical, demographical and history research, as well as for tracing back personal history. We report a new method for quantitatively determining personal genetic ancestry based on genome-wide data. Numerical ancestry component scores are assigned to individuals based on comparisons with reference populations. These comparisons are conducted with an existing analytical pipeline making use of genotype phasing, similarity matrix computation and our addition-multidimensional best fitting by MixFit...
2017: PloS One
https://www.readbyqxmd.com/read/28107013/quaternary-n-2-pyridyl-dabco-salts-one-pot-in-situ-formation-from-pyridine-n-oxides-and-reactions-with-nucleophiles-a-mild-and-selective-route-to-substituted-n-2-pyridyl-n-ethylpiperazines
#7
Dmitry I Bugaenko, Marina A Yurovskaya, Alexander V Karchava
The N-(2-pyridyl)-N'-ethylpiperazines are important structural motifs in several medicinally relevant compounds. Known synthetic methods toward these structures are multistep and generally based on the SNAr-chemistry; their applicability is significantly limited to substrates containing electron-withdrawing groups. Here we describe a new methodology for a rapid and modular access to this privileged scaffold. Importantly, the developed protocol proved to be very general and efficient for the substrates containing substituents of different electronic nature...
January 20, 2017: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/28106305/diversity-oriented-peptide-stapling-a-third-generation-cuaac-stapling-and-functionalisation-strategy
#8
Thu Tran Phuong, Christian Ørnbøl Larsen, Tobias Røndbjerg, Martina De Foresta, Micha Ben Achim Kunze, Ales Marek, Jacob Hartvig Løper, Lotte-Emilie Boyhus, Astrid Knuhtsen, Kresten Lindorff-Larsen, Daniel Sejer Pedersen
The introduction of macrocyclic constraints in peptides (peptide stapling) is an important tool within peptide medicinal chemistry for stabilising and pre-organising peptides in a desired conformation. In recent years, the copper-catalysed azide-alkyne cycloaddition (CuAAC) has emerged as a powerful method for peptide stapling. However, to date CuAAC stapling has not provided a simple method for obtaining peptides that are easily diversified further. In the present study, we report a new diversity-oriented peptide stapling (DOPS) methodology based on CuAAC chemistry...
January 20, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28106294/balancing-between-aging-and-cancer-molecular-genetics-meets-traditional-chinese-medicine
#9
Jing Liu, Lei Peng, Wenhui Huang, Zhiming Li, Jun Pan, Lei Sang, Siqian Lu, Jihong Zhang, Wanyi Li, Ying Luo
The biological consequences of cellular senescence and immortalization in aging and cancer are in conflict. Organisms have developed common cellular signaling pathways and surveillance mechanisms to control the processing of aging against tumorigenesis. The imbalance of any signals involved in this process may result in either premature aging or tumorigenesis and reduce the life span of the organism. In contrast, the balance between aging and tumorigenesis at a higher level (homeostatic-balance) may benefit the organism with tumor-free longevity...
January 20, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28106223/next-generation-of-network-medicine-interdisciplinary-signaling-approaches
#10
REVIEW
Tamas Korcsmaros, Maria Victoria Schneider, Giulio Superti-Furga
In the last decade, network approaches have transformed our understanding of biological systems. Network analyses and visualizations have allowed us to identify essential molecules and modules in biological systems, and improved our understanding of how changes in cellular processes can lead to complex diseases, such as cancer, infectious and neurodegenerative diseases. "Network medicine" involves unbiased large-scale network-based analyses of diverse data describing interactions between genes, diseases, phenotypes, drug targets, drug transport, drug side-effects, disease trajectories and more...
January 20, 2017: Integrative Biology: Quantitative Biosciences From Nano to Macro
https://www.readbyqxmd.com/read/28105951/theoretical-implementation-of-prior-knowledge-in-the-design-of-a-multi-scale-prosthesis-satisfaction-questionnaire
#11
Tim Schürmann, Philipp Beckerle, Julia Preller, Joachim Vogt, Oliver Christ
BACKGROUND: In product development for lower limb prosthetic devices, a set of special criteria needs to be met. Prosthetic devices have a direct impact on the rehabilitation process after an amputation with both perceived technological and psychological aspects playing an important role. However, available psychometric questionnaires fail to consider the important links between these two dimensions. In this article a probabilistic latent trait model is proposed with seven technical and psychological factors which measure satisfaction with the prosthesis...
December 19, 2016: Biomedical Engineering Online
https://www.readbyqxmd.com/read/28105335/detection-of-stanozolol-in-the-urine-of-athletes-at-a-pg-level-the-possibility-of-passive-exposure
#12
Christina Tsitsimpikou, Konstantinos Tsarouhas, Demetrios A Spandidos, Aristides M Tsatsakis
Stanozolol is a synthetic heterocyclic steroid with anabolic and androgenic properties, which has been abused by several high-profile professional athletes. Stanozolol is also used in veterinary medicine to increase appetite, cause weight gain and treat certain types of anemia. The detection of stanozolol metabolites in human urine for doping control purposes depends on the analytical method applied. The most commonly applied methods in the World Anti-Doping Agency (WADA)-accredited doping control laboratories are gas chromatography/high-resolution mass spectrometry (GC/HRMS) or gas chromatography-mass spectrometry (GC/MS/MS)...
December 2016: Biomedical Reports
https://www.readbyqxmd.com/read/28105196/nanotechnology-for-multimodality-treatment-of-cancer
#13
Xiao-Ying Zhang, Pei-Ying Zhang
Nanotechnology is the latest evolving field and its applications in medicine in recent decades has shown great potential. It has also given a new face to the therapeutics against cancer in recent years. The electronic databases of MEDLINE, EMBASE and PubMed were searched for recent studies, reporting the importance of nanomedicine. The concluding remarks of the above papers mostly confirmed the growing potential of nanomedicine, particularly in the field of cancer. Furthermore, nanomedicine has been observed to promote the therapeutic effect of agents by formulating them into nanocarriers...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28104974/rare-manifestation-of-digoxin-toxicity-right-bundle-branch-block
#14
Dalvir Gill, Samana Zaidi
A 76-year-old female, with medical history significant for systolic congestive heart failure, who presented to the emergency department with lethargy and abdominal pain with diarrhea for the past 3 weeks. Due to hypotension, the patient received multiple boluses of isotonic saline and was started on norepinephrine. Laboratories were significant for severe digoxin toxicity (29 ng/mL), in setting of acute kidney injury. Electrocardiogram (EKG) revealed a new right bundle branch block (RBBB). She was given Digibind and her repeat digoxin level was 20 ng/mL...
December 2016: Journal of Basic and Clinical Pharmacy
https://www.readbyqxmd.com/read/28104906/interrogating-open-issues-in-cancer-precision-medicine-with-patient-derived-xenografts
#15
Annette T Byrne, Denis G Alférez, Frédéric Amant, Daniela Annibali, Joaquín Arribas, Andrew V Biankin, Alejandra Bruna, Eva Budinská, Carlos Caldas, David K Chang, Robert B Clarke, Hans Clevers, George Coukos, Virginie Dangles-Marie, S Gail Eckhardt, Eva Gonzalez-Suarez, Els Hermans, Manuel Hidalgo, Monika A Jarzabek, Steven de Jong, Jos Jonkers, Kristel Kemper, Luisa Lanfrancone, Gunhild Mari Mælandsmo, Elisabetta Marangoni, Jean-Christophe Marine, Enzo Medico, Jens Henrik Norum, Héctor G Palmer, Daniel S Peeper, Pier Giuseppe Pelicci, Alejandro Piris-Gimenez, Sergio Roman-Roman, Oscar M Rueda, Joan Seoane, Violeta Serra, Laura Soucek, Dominique Vanhecke, Alberto Villanueva, Emilie Vinolo, Andrea Bertotti, Livio Trusolino
Patient-derived xenografts (PDXs) have emerged as an important platform to elucidate new treatments and biomarkers in oncology. PDX models are used to address clinically relevant questions, including the contribution of tumour heterogeneity to therapeutic responsiveness, the patterns of cancer evolutionary dynamics during tumour progression and under drug pressure, and the mechanisms of resistance to treatment. The ability of PDX models to predict clinical outcomes is being improved through mouse humanization strategies and the implementation of co-clinical trials, within which patients and PDXs reciprocally inform therapeutic decisions...
January 20, 2017: Nature Reviews. Cancer
https://www.readbyqxmd.com/read/28104380/-evolutionary-medicine-a-new-look-on-health-and-disease
#16
F Bauduer
Evolutionary medicine represents an innovative approach deriving from evolutionary biology. It includes the initial Darwin's view, its actualization in the light of progresses in genetics and also dissident theories (i.e. non gene-based) particularly epigenetics. This approach enables us to reconsider the pathophysiology of numerous diseases, as for instance, infection, and our so-called diseases of civilization especially obesity, type 2 diabetes, allergy or cancer. Evolutionary medicine may also improve our knowledge regarding inter-individual variation in susceptibility to disease or drugs...
January 16, 2017: La Revue de Médecine Interne
https://www.readbyqxmd.com/read/28104004/-preliminary-discussion-of-the-we-media-used-in-the-teaching-of-the-history-of-medicine
#17
Y Y Xia
With the increase of new Internet platform, student access to knowledge is more and more diversified, ensuing in the challenge to the traditional classroom model. In order to be able to better attract the attention of students, and to guide the students' interest in learning, the author reform in the history of medicine electives, we push the micro letter public articles into the traditional classroom teaching. In order to enable students to actively participate in public reading and writing, a series of measures is adopted with better effect, full mobilization of the enthusiasm and interest of students, training of the abilities of the students, popularization and promotion of history of medical knowledge and mutual promotion of both teaching and learning...
September 28, 2016: Zhonghua Yi Shi za Zhi, Chinese Journal of Medical History
https://www.readbyqxmd.com/read/28103986/-holistic-integrative-medicine-the-road-to-the-future-of-the-development-of-burn-medicine
#18
D M Fan
Holistic integrative medicine is the road to the future of the development of burn medicine. Not only burn medicine, but also human medicine gradually enters the era of holistic integrative medicine. Holistic integrative medicine is different from translational medicine, evidence-based medicine or precision medicine, which integrates the most advanced knowledge and theories in medicine fields with the most effective practices and experiences in clinical specialties to form a new medical system.
January 20, 2017: Zhonghua Shao Shang za Zhi, Zhonghua Shaoshang Zazhi, Chinese Journal of Burns
https://www.readbyqxmd.com/read/28103985/-ding-ganren-and-the-shanghai-professional-college-of-chinese-medicine
#19
Y E Ding
Ding Ganren (1866-1926), a distinguished representative of the Menghe Medical School, created a new school of unifying the Cold pathogenic disease with Warm febrile disease by adopting a new therapeutic method of integrating the Six-channel and Defense-qi-nutrient-blood syndrome differentiation, and simultaneously applying the classical formula with seasonal formula for treating against the exogenous febrile disease, which was quite an innovative approach. Ding Ganren paid high attention to the advancement of the education of Chinese medicine and founded the first official medical school in 1916 called the "Shanghai Professional College of Chinese Medicine" ...
November 28, 2016: Zhonghua Yi Shi za Zhi, Chinese Journal of Medical History
https://www.readbyqxmd.com/read/28103939/physician-migration-at-its-roots-a-study-on-the-emigration-preferences-and-plans-among-medical-students-in-romania
#20
Şoimita Mihaela Suciu, Codruta Alina Popescu, Mugur Daniel Ciumageanu, Anca Dana Buzoianu
BACKGROUND: Migration of healthcare workers is receiving increased attention worldwide. In Europe, the creation of a border-free labor market and its expansion with the EU enlargements of 2004, 2007, and 2013 endowed health professionals with the right to provide services and to relocate to another EU Member State. For the Romanian doctors, the EU-wide recognition of the medical degree obtained in Romania has created new opportunities, while inadequate working conditions and relatively low salaries pushed many of them to search for employment abroad...
January 19, 2017: Human Resources for Health
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