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https://www.readbyqxmd.com/read/28856890/cyclic-dipeptide-based-ambidextrous-supergelators-minimalistic-rational-design-structure-gelation-studies-and-in-situ-hydrogelation
#1
Shivaprasad Manchineella, N Arul Murugan, Thimmaiah Govindaraju
Ambidextrous supergelators are developed through structure-gelation screening of rationally designed cyclic dipeptides (CDPs). The organo- and hydrogels of CDPs were thoroughly characterized by their minimal gelation concentration (MGC) for organic and aqueous solvents, thermal stability (Tg), and viscoelastic properties. Intermolecular hydrogen bonding, the major driving force for gelation was evaluated using temperature-dependent nuclear magnetic resonance (NMR) spectroscopy. The contribution of attractive van der Waals interaction of tBoc group in driving CDP gelation was ascertained using β-cyclodextrin (β-CD)-adamantane carboxylic acid (AC)-based host-guest gelation and (1)H NMR studies...
September 14, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/28819625/antagonistic-properties-of-some-halophilic-thermoactinomycetes-isolated-from-superficial-sediment-of-a-solar-saltern-and-production-of-cyclic-antimicrobial-peptides-by-the-novel-isolate-paludifilum-halophilum
#2
Donyez Frikha Dammak, Ziad Zarai, Soumaya Najah, Rayed Abdennabi, Lassaad Belbahri, Mostafa E Rateb, Hafedh Mejdoub, Sami Maalej
This study has focused on the isolation of twenty-three halophilic actinomycetes from two ponds of different salinity and the evaluation of their ability to exert an antimicrobial activity against both their competitors and several other pathogens. From the 23 isolates, 18 strains showed antagonistic activity, while 19 showed activities against one or more of the seven pathogen strains tested. Six strains exhibited consistent antibacterial activity against Gram-negative and Gram-positive pathogens characterized at the physiological and molecular levels...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28811757/cyclic-dipeptides-from-bacillus-vallismortis-bs07-require-key-components-of-plant-immunity-to-induce-disease-resistance-in-arabidopsis-against-pseudomonas-infection
#3
Seong Woo Noh, Rira Seo, Jung-Kwon Park, Md Maniruzzaman Manir, Kyungseok Park, Mee Kyung Sang, Surk-Sik Moon, Ho Won Jung
Cyclic dipeptides (CDPs) are one of the simplest compounds produced by living organisms. Plant-growth promoting rhizobacteria (PGPRs) also produce CDPs that can induce disease resistance. Bacillus vallismortis strain BS07 producing various CDPs has been evaluated as a potential biocontrol agent against multiple plant pathogens in chili pepper. However, plant signal pathway triggered by CDPs has not been fully elucidated yet. Here we introduce four CDPs, cyclo(Gly-L-Pro) previously identified from Aspergillus sp...
August 2017: Plant Pathology Journal
https://www.readbyqxmd.com/read/28695898/cdps-caspase-dependent-non-lethal-cellular-processes
#4
EDITORIAL
Lior Aram, Keren Yacobi-Sharon, Eli Arama
No abstract text is available yet for this article.
August 2017: Cell Death and Differentiation
https://www.readbyqxmd.com/read/28679537/a-cost-effectiveness-analysis-of-condom-distribution-programmes-for-the-prevention-of-sexually-transmitted-infections-in-england
#5
Susannah Sadler, Jon Tosh, Rebekah Pennington, Andrew Rawdin, Hazel Squires, Carmen Romero, Alastair Fischer, James Chilcott
BACKGROUND: Prevention of sexually transmitted infection (STI) incidence in England is a high priority, particularly among young people, men who have sex with men (MSM) and black ethnic minorities. An economic evaluation of condom distribution programmes (CDPs) to reduce STI transmission is presented. METHODS: An economic model using a Bernoulli process estimated the number of people acquiring an STI as a function of its prevalence, transmission rate, condom use, condom failure rate and number of sexual contacts...
July 5, 2017: Journal of Epidemiology and Community Health
https://www.readbyqxmd.com/read/28650175/bioactive-peptide-natural-products-as-lead-structures-for-medicinal-use
#6
Tam Dang, Roderich D Süssmuth
The need for new drugs for the treatment of various diseases is enormous. From the previous century until the present, numerous peptide and peptide-derived natural products have been isolated from bacteria and fungi. Hence, microorganisms play a pivotal role as sources for novel drugs with an emphasis on anti-infective agents. Various disciplines from biology, chemistry, and medicine are involved in early stages of the search for peptide natural products including taxonomy, microbiology, bioanalytics, bioinformatics, and medicinal chemistry...
June 26, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/28632179/the-antiproliferative-effect-of-cyclodipeptides-from-pseudomonas-aeruginosa-pao1-on-hela-cells-involves-inhibition-of-phosphorylation-of-akt-and-s6k-kinases
#7
Laura Hernández-Padilla, Dolores Vázquez-Rivera, Luis A Sánchez-Briones, Alma L Díaz-Pérez, José Moreno-Rodríguez, Mario A Moreno-Eutimio, Victor Meza-Carmen, Homero Reyes-De la Cruz, Jesús Campos-García
Pseudomonas aeruginosa PAO1, a potential pathogen of plants and animals, produces the cyclodipeptides cyclo(l-Pro-l-Tyr), cyclo(l-Pro-l-Phe), and cyclo(l-Pro-l-Val) (PAO1-CDPs), whose effects have been implicated in inhibition of human tumor cell line proliferation. Our purpose was to investigate in depth in the mechanisms of HeLa cell proliferation inhibition by the PAO1-CDPs. The results indicate that PAO1-CDPs, both purified individually and in mixtures, inhibited HeLa cell proliferation by arresting the cell cycle at the G0-G1 transition...
June 20, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28623911/moderate-mental-illness-as-a-predictor-of-chronic-disease-prevention-and-screening
#8
Ginetta Salvalaggio, Christopher Meaney, Rahim Moineddin, Eva Grunfeld, Donna Manca
BACKGROUND: Primary care plays a pivotal role in the provision of both mental health care and chronic disease prevention and screening (CDPS). Unfortunately, moderate mental illness (MMI) is associated with poorer general health outcomes. Part of this burden of illness may be due to reduced CDPS uptake. The Building on the Existing Tools to Improve Chronic Disease Prevention in Primary Care (BETTER) trial recruited 777 participants ages 40-65 from 32 family practice panels, of whom 135 (18...
June 17, 2017: BMC Family Practice
https://www.readbyqxmd.com/read/28507514/markovian-analysis-of-the-sequential-behavior-of-the-spontaneous-spinal-cord-dorsum-potentials-induced-by-acute-nociceptive-stimulation-in-the-anesthetized-cat
#9
Mario Martin, Javier Béjar, Gennaro Esposito, Diógenes Chávez, Enrique Contreras-Hernández, Silvio Glusman, Ulises Cortés, Pablo Rudomín
In a previous study we developed a Machine Learning procedure for the automatic identification and classification of spontaneous cord dorsum potentials (CDPs). This study further supported the proposal that in the anesthetized cat, the spontaneous CDPs recorded from different lumbar spinal segments are generated by a distributed network of dorsal horn neurons with structured (non-random) patterns of functional connectivity and that these configurations can be changed to other non-random and stable configurations after the noceptive stimulation produced by the intradermic injection of capsaicin in the anesthetized cat...
2017: Frontiers in Computational Neuroscience
https://www.readbyqxmd.com/read/28034297/chemical-classification-of-cyclic-depsipeptides
#10
Lien Taevernier, Evelien Wynendaele, Bert Gevaert, Bart De Spiegeleer
Cyclic depsipeptides (CDPs) are a family of cyclic peptide-related compounds, of which the ring is mainly composed of amino- and hydroxy acid residues joined by amide and ester bonds (at least one), leading to a wide diversity of fascinating chemical structures. They differ in both their ring structure and their side chains, especially by the nature of the unusual and non-amino acid building blocks. To date, however, there is no overall uniform chemical classification system available for CDPs and naming of the diverse family members is done rather arbitrarily...
November 28, 2016: Current Protein & Peptide Science
https://www.readbyqxmd.com/read/27906041/implementation-of-the-better-2-program-a-qualitative-study-exploring-barriers-and-facilitators-of-a-novel-way-to-improve-chronic-disease-prevention-and-screening-in-primary-care
#11
Nicolette Sopcak, Carolina Aguilar, Mary Ann O'Brien, Candace Nykiforuk, Kris Aubrey-Bassler, Richard Cullen, Eva Grunfeld, Donna Patricia Manca
BACKGROUND: BETTER (Building on Existing Tools to Improve Chronic Disease Prevention and Screening in Primary Care) is a patient-based intervention to improve chronic disease prevention and screening (CDPS) for cardiovascular disease, diabetes, cancer, and associated lifestyle factors in patients aged 40 to 65. The key component of BETTER is a prevention practitioner (PP), a health care professional with specialized skills in CDPS who meets with patients to develop a personalized prevention prescription, using the BETTER toolkit and Brief Action Planning...
December 1, 2016: Implementation Science: IS
https://www.readbyqxmd.com/read/27900439/non-ribosomal-peptide-synthases-from-pseudomonas-aeruginosa-play-a-role-in-cyclodipeptide-biosynthesis-quorum-sensing-regulation-and-root-development-in-a-plant-host
#12
Omar González, Randy Ortíz-Castro, César Díaz-Pérez, Alma L Díaz-Pérez, Viridiana Magaña-Dueñas, José López-Bucio, Jesús Campos-García
Diverse molecules mediate cross-kingdom communication between bacteria and their eukaryotic partners and determine pathogenic or symbiotic relationships. N-acyl-L-homoserine lactone-dependent quorum-sensing signaling represses the biosynthesis of bacterial cyclodipeptides (CDPs) that act as auxin signal mimics in the host plant Arabidopsis thaliana. In this work, we performed bioinformatics, biochemical, and plant growth analyses to identify non-ribosomal peptide synthase (NRPS) proteins of Pseudomonas aeruginosa, which are involved in CDP synthesis...
April 2017: Microbial Ecology
https://www.readbyqxmd.com/read/27895718/consensus-diversity-plots-a-global-diversity-analysis-of-chemical-libraries
#13
Mariana González-Medina, Fernando D Prieto-Martínez, John R Owen, José L Medina-Franco
BACKGROUND: Measuring the structural diversity of compound databases is relevant in drug discovery and many other areas of chemistry. Since molecular diversity depends on molecular representation, comprehensive chemoinformatic analysis of the diversity of libraries uses multiple criteria. For instance, the diversity of the molecular libraries is typically evaluated employing molecular scaffolds, structural fingerprints, and physicochemical properties. However, the assessment with each criterion is analyzed independently and it is not straightforward to provide an evaluation of the "global diversity"...
2016: Journal of Cheminformatics
https://www.readbyqxmd.com/read/27892478/continuous-single-cell-imaging-reveals-sequential-steps-of-plasmacytoid-dendritic-cell-development-from-common-dendritic-cell-progenitors
#14
Ezgi Dursun, Max Endele, Andrea Musumeci, Henrik Failmezger, Shu-Hung Wang, Achim Tresch, Timm Schroeder, Anne B Krug
Functionally distinct plasmacytoid and conventional dendritic cells (pDC and cDC) shape innate and adaptive immunity. They are derived from common dendritic cell progenitors (CDPs) in the murine bone marrow, which give rise to CD11c(+) MHCII(-) precursors with early commitment to DC subpopulations. In this study, we dissect pDC development from CDP into an ordered sequence of differentiation events by monitoring the expression of CD11c, MHC class II, Siglec H and CCR9 in CDP cultures by continuous single cell imaging and tracking...
November 28, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27844416/two-synthetic-methods-for-preparation-of-chiral-stationary-phases-using-crystalline-degradation-products-of-vancomycin-column-performance-for-enantioseparation-of-acidic-and-basic-drugs
#15
Assem Abdollahpour, Rouhollah Heydari, Mojtaba Shamsipur
Two chiral stationary phases (CSPs) based on crystalline degradation products (CDPs) of vancomycin by using different synthetic methods were prepared and compared. Crystalline degradation products of vancomycin were produced by hydrolytic loss of ammonia from vancomycin molecules. Performances of two chiral columns prepared with these degradation products were investigated using several acidic and basic drugs as model analytes. Retention and resolution of these analytes on the prepared columns, as two main parameters, in enantioseparation were studied...
November 14, 2016: AAPS PharmSciTech
https://www.readbyqxmd.com/read/27711768/three-and-four-coordinate-fe-carbodiphosphorane-complexes
#16
Conor Pranckevicius, Diana A Iovan, Douglas W Stephan
Carbodiphosphoranes (CDPs) are a family of divalent carbon ligands that are known for their exceptional electron donor properties. Herein, the preparation and reactivity of a family of three and four co-ordinate Fe carbodiphosphorane complexes is described. Hexaphenylcarbodiphosphorane (HCDP) [1] is shown to react with FeCl2(PPh3)2 to form the three coordinate adduct Fe(HCDP)Cl2 [2], which is equilibrium with its four coordinate dimer. Reaction of [2] with two equivalents of benzyl Grignard yields the corresponding dialkyl complex (HCDP)FeBn2 [3]...
September 28, 2016: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/27637449/preliminary-characterizations-antioxidant-and-hepatoprotective-activity-of-polysaccharide-from-cistanche-deserticola
#17
Yuanheng Guo, Lili Cao, Qingsheng Zhao, Lijun Zhang, Jinjin Chen, Boyan Liu, Bing Zhao
To research the preliminary characterizations, antioxidant and hepatoprotective activity of polysaccharides from Cistanche deserticola (CDPs), three polysaccharide fractions, CDP-A, CDP-B and CDP-C, were obtained by successively membrane filtration (microfiltration, ultrafiltration and nanofiltration). Molecular weights, monosaccharide compositions, purities and IR spectra of the three fractions were analyzed. Results showed that CDP-C contained higher proportion of galacturonic acid (GalUA) than CDP-B and CDP-A...
December 2016: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/27306540/laboratory-evaluation-of-a-new-coagulant-disinfectant-point-of-use-water-treatment-product-for-emergencies
#18
J-T Marois-Fiset, A Shaheed, J Brown, C C Dorea
AIMS: There is emerging evidence that point-of-use (POU) water treatment can be effective in the improvement of microbial water quality and the decrease in diarrhoeal disease incidence in humanitarian emergencies. Coagulant/disinfection products (CDPs) have the distinct advantage of providing microbial quality improvement, turbidity reductions and a free chlorine residual (FCR). The laboratory treatment performance of a novel CDP, the 'Pureit(®) ' sachet, has been evaluated under different water quality conditions...
September 2016: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/27142008/isolation-of-dendritic-cell-progenitor-and-bone-marrow-progenitor-cells-from-mouse
#19
Nobuyuki Onai, Toshiaki Ohteki
Dendritic cells (DCs) comprise two major subsets, conventional DC (cDC) and plasmacytoid DC (pDC) in the steady-state lymphoid organ. These cells have a short half-life and therefore, require continuous generation from hematopoietic stem cells and progenitor cells. Recently, we identified DC-restricted progenitors called common DC progenitors (CDPs) in the bone marrow of mouse. The CDPs can be isolated from mouse bone marrow based on the hematopoietic cytokine receptors, such as Flt3 (Fms-related tyrosine kinase 3) (CD135), c-kit (CD117), M-CSF (macrophage colony-stimulating factor) receptor (CD115), and IL-7 (interleukin-7) receptor-α (CD127)...
2016: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27058451/retaining-faculty-in-academic-medicine-the-impact-of-career-development-programs-for-women
#20
COMPARATIVE STUDY
Shine Chang, Page S Morahan, Diane Magrane, Deborah Helitzer, Hwa Young Lee, Sharon Newbill, Ho-Lan Peng, Michele Guindani, Gina Cardinali
BACKGROUND: For more than two decades, national career development programs (CDPs) have addressed underrepresentation of women faculty in academic medicine through career and leadership curricula. We evaluated CDP participation impact on retention. METHODS: We used Association of American Medical Colleges data to compare 3268 women attending CDPs from 1988 to 2008 with 17,834 women and 40,319 men nonparticipant faculty similar to CDP participants in degree, academic rank, first year of appointment in rank, and home institution...
July 2016: Journal of Women's Health
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