19 results on '"Milli L"'
Search Results
2. UTLDR: an agent-based framework for modeling infectious diseases and public interventions
- Author
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Rossetti G., Milli L., Citraro S., and Morini V.
- Subjects
Agent-based Modelling ,Activity Driven Networks ,Epidemics ,Compartmental models - Abstract
Nowadays, due to the SARS-CoV-2 pandemic, epidemic modelling is experiencing a constantly growing interest from researchers of heterogeneous fields of study. Indeed, the vast literature on computational epidemiology offers solid grounds for analytical studies and the definition of novel models aimed at both predictive and prescriptive scenario descriptions. To ease the access to diffusion modelling, several programming libraries and tools have been proposed during the last decade: however, to the best of our knowledge, none of them is explicitly designed to allow its users to integrate public interventions in their model. In this work, we introduce UTLDR, a framework that can simulate the effects of several public interventions (and their combinations) on the unfolding of epidemic processes. UTLDR enables the design of compartmental models incrementally and to simulate them over complex interaction network topologies. Moreover, it allows integrating external information on the analyzed population (e.g., age, gender, geographical allocation, and mobility patterns. . . ) and to use it to stratify and refine the designed model. After introducing the framework, we provide a few case studies to underline its flexibility and expressive power.
- Published
- 2020
3. Conformity: A Path-Aware Homophily Measure for Node-Attributed Networks
- Author
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Rossetti G., Citraro S., and Milli L.
- Subjects
Assortativity ,Feature-rich networks ,Complex Networks - Abstract
Unveil the homophilic/heterophilic behaviors that characterize the wiring patterns of complex networks is an important task in social network analysis, often approached studying the assortative mixing of node attributes. Recent works underlined that a global measure to quantify node homophily necessarily provides a partial, often deceiving, picture of the reality. Moving from such literature, in this work, we propose a novel measure, namely Conformity, designed to overcome such limitation by providing a node-centric quantification of assortative mixing patterns. Differently from the measures proposed so far, Conformity is designed to be path-aware, thus allowing for a more detailed evaluation of the impact that nodes at different degrees of separations have on the homophilic embeddedness of a target. Experimental analysis on synthetic and real data allowed us to observe that Conformity can unveil valuable insights from node-attributed graphs.
- Published
- 2020
4. A single-arm clinical trial investigating the effectiveness of a non-hormonal vaginal moisturizer in postmenopausal cancer survivors
- Author
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Carter, J., primary, Goldfarb, S., additional, Baser, R.E., additional, Goldfrank, D.J., additional, Seidel, B., additional, Milli, L., additional, Stabile, C., additional, Canty, J., additional, Dickler, M.N., additional, and Alektiar, K., additional
- Published
- 2019
- Full Text
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5. 019 Evaluation of Patient-report Outcomes (PROs), Medical and Patient Characteristics of Colorectal/Anal Cancer Patients/Survivors
- Author
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Canty, J., primary, Milli, L., additional, Seidel, S., additional, Stabile, C., additional, Goldfrank, D., additional, and Carter, J., additional
- Published
- 2018
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6. Elusive π-helical peptide foldamers spotted by chiroptical studies
- Author
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Marcin Górecki, Magda Monari, Gennaro Pescitelli, Demetra Giuri, Fabio Bologna, Nicola Castellucci, Gaetano Angelici, Sergio Di Silvio, Matteo Calvaresi, Nicola Zanna, Claudia Tomasini, Lorenzo Milli, Di Silvio S., Bologna F., Milli L., Giuri D., Zanna N., Castellucci N., Monari M., Calvaresi M., Gorecki M., Angelici G., Tomasini C., and Pescitelli G.
- Subjects
Diffraction ,Chemistry ,Hydrogen bond ,Circular Dichroism ,Organic Chemistry ,Energy landscape ,Molecular Dynamics Simulation ,Vibration ,Biochemistry ,Oligomer ,Protein Structure, Secondary ,Spectral line ,chemistry.chemical_compound ,Crystallography ,Molecular dynamics ,Thermodynamic ,Peptide ,Spectroscopy, Fourier Transform Infrared ,Thermodynamics ,Pyroglutamic acid ,Physical and Theoretical Chemistry ,Peptides ,Helical peptide - Abstract
A series of oligomers containing alternate l-Ala and pGlu (pyroglutamic acid) both in the L and D form have been prepared and conformationally investigated by X-ray, NMR, UV/ECD, IR/VCD and molecular modelling. X-ray diffraction analysis was possible for the shortest oligomers LL-1 and LD-1. Molecular dynamics simulations of the oligomers demonstrated that the energy landscapes of the LL-series are broad. In contrast, the energy landscapes of the LD-series are characterized by well-defined minima corresponding to specific conformational structures. A single well-defined minimum exists in the energy landscape of the largest oligomer LD-8, corresponding to a precise conformation, characterized by i + 5 → i N-H⋯OC hydrogen bonds, typical of a π-helix. ECD and VCD spectra were measured to identify the chiroptical profiles of the oligomers. The most striking element in the ECD spectra of the LD-series is their exceptionally strong intensity, which confirms that these polypeptides attain a high degree of helical order. VCD spectra for the LD-series are well reproduced by frequency calculations when π-helix folds are employed as input structures, suggesting that a symmetrical VCD couplet around 1720 cm-1 can be taken as the VCD signature of π-helices.
- Published
- 2020
7. Corrections to "An Optimized Safe Process from Bench to Pilot cGMP Production of API Eptifibatide Using a Multigram-Scale Microwave-Assisted Solid-Phase Peptide Synthesizer".
- Author
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D'Ercole A, Pacini L, Sabatino G, Zini M, Milli L, Nuti F, Ribecai A, Paio A, Rovero P, and Papini AM
- Abstract
[This corrects the article DOI: 10.1021/acs.oprd.1c00368.]., (© 2022 The Authors. Published by American Chemical Society.)
- Published
- 2022
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8. Race, Social Determinants of Health, and Cancer: How Can APs Address and Improve Patient Outcomes?
- Author
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DiMarco R and Milli L
- Abstract
The data show that racial and ethnic minority groups throughout the United States experience higher rates of illness and death across a wide range of health conditions when compared to their White counterparts. This session at JADPRO Live Virtual 2021 explained race, social determinants of health, and the impact of health disparities on oncology patients, highlighting concrete ways advanced practitioners can reduce health disparities and improve patient outcomes., Competing Interests: The presenters had no conflicts of interests to disclose., (© 2022 Harborside™.)
- Published
- 2022
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9. A single-arm, prospective trial investigating the effectiveness of a non-hormonal vaginal moisturizer containing hyaluronic acid in postmenopausal cancer survivors.
- Author
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Carter J, Baser RE, Goldfrank DJ, Seidel B, Milli L, Stabile C, Canty J, Saban S, Goldfarb S, Dickler MN, Gardner GJ, Jewell EL, Sonoda Y, Kollmeier MA, and Alektiar KM
- Subjects
- Adult, Aged, Atrophy, Breast Neoplasms pathology, Breast Neoplasms therapy, Endometrial Neoplasms pathology, Endometrial Neoplasms therapy, Female, Humans, Longitudinal Studies, Middle Aged, Postmenopause physiology, Prospective Studies, Vaginal Creams, Foams, and Jellies therapeutic use, Aromatase Inhibitors therapeutic use, Cancer Survivors, Hyaluronic Acid therapeutic use, Vagina pathology, Vaginal Diseases drug therapy, Vulva pathology
- Abstract
Purpose: To assess the feasibility and efficacy of a non-hormonal hyaluronic acid (HLA) vaginal gel in improving vulvovaginal estrogen-deprivation symptoms in postmenopausal women with a history of hormone receptor-positive (HR+) cancer., Methods: For this single-arm, prospective longitudinal trial, we identified disease-free patients with a history of HR+ breast cancer treated with aromatase inhibitors or HR+ endometrial cancer treated with surgery and postoperative radiation. Participants used HLA daily for the first 2 weeks, and then 3×/week until weeks 12-14; dosage was then increased to 5×/week for non-responders. Vulvovaginal symptoms and pH were assessed at 4 time points (baseline [T1], 4-6 weeks [T2], 12-14 weeks [T3], 22-24 weeks [T4]) with clinical evaluation, the Vaginal Assessment Scale (VAS), Vulvar Assessment Scale (VuAS), Female Sexual Function Index (FSFI), and Menopausal Symptom Checklist (MSCL)., Results: Of 101 patients, mean age was 55 years (range, 31-78), 68% (n = 69) were partnered, and 60% (n = 61) were sexually active. In linear mixed models, VAS/VuAS scores significantly improved at all assessment points (all p < 0.001). MSCL scores similarly improved (all p < 0.001). FSFI scores significantly improved from T1 to T2 (p < 0.03), T3 (p < 0.001), and T4 (p < 0.001). Severe vaginal pH (> 6.5) decreased from 26% at T1 to 19% at T4 (p = 0.18)., Conclusions: HLA moisturization improved vulvovaginal health/sexual function of cancer survivors. While HLA administration 1-2×/week is recommended for women in natural menopause, a 3-5×/week schedule appears to be more effective for symptom relief in cancer survivors.
- Published
- 2021
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10. UTLDR: an agent-based framework for modeling infectious diseases and public interventions.
- Author
-
Rossetti G, Milli L, Citraro S, and Morini V
- Abstract
Due to the SARS-CoV-2 pandemic, epidemic modeling is now experiencing a constantly growing interest from researchers of heterogeneous study fields. Indeed, due to such an increased attention, several software libraries and scientific tools have been developed to ease the access to epidemic modeling. However, only a handful of such resources were designed with the aim of providing a simple proxy for the study of the potential effects of public interventions (e.g., lockdown, testing, contact tracing). In this work, we introduce UTLDR, a framework that, overcoming such limitations, allows to generate "what if" epidemic scenarios incorporating several public interventions (and their combinations). UTLDR is designed to be easy to use and capable to leverage information provided by stratified populations of agents (e.g., age, gender, geographical allocation, and mobility patterns…). Moreover, the proposed framework is generic and not tailored for a specific epidemic phenomena: it aims to provide a qualitative support to understanding the effects of restrictions, rather than produce forecasts/explanation of specific data-driven phenomena., Competing Interests: Conflict of InterestsThe authors have no conflicts of interest to declare that are relevant to the content of this article., (© The Author(s) 2021.)
- Published
- 2021
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11. A single-arm clinical trial investigating the effectiveness of a non-hormonal, hyaluronic acid-based vaginal moisturizer in endometrial cancer survivors.
- Author
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Carter J, Goldfarb S, Baser RE, Goldfrank DJ, Seidel B, Milli L, Saban S, Stabile C, Canty J, Gardner GJ, Jewell EL, Sonoda Y, Kollmeier MA, and Alektiar KM
- Subjects
- Adult, Aged, Cancer Survivors, Cohort Studies, Endometrial Neoplasms physiopathology, Endometrial Neoplasms radiotherapy, Endometrial Neoplasms surgery, Female, Humans, Longitudinal Studies, Middle Aged, Prospective Studies, Vagina physiopathology, Vulva physiopathology, Endometrial Neoplasms rehabilitation, Hyaluronic Acid administration & dosage, Vagina drug effects, Vaginal Creams, Foams, and Jellies administration & dosage, Vulva drug effects
- Abstract
Objective: To assess the efficacy of non-hormonal, hyaluronic acid (HLA)-based vaginal gel in improving vulvovaginal estrogen-deprivation symptoms in women with a history of endometrial cancer., Methods: For this single-arm, prospective, longitudinal trial, we enrolled disease-free women with a history of endometrial cancer who underwent surgery (total hysterectomy) and postoperative radiation. Participants used HLA daily for the first 2 weeks, and then 3×/week until weeks 12-14; dosage was then increased to 5×/week for non-responders. Vulvovaginal symptoms and pH were assessed at 4 time points (baseline [T1]; 4-6 weeks [T2]; 12-14 weeks [T3]; 22-24 weeks [T4]) with clinical evaluation, the Vaginal Assessment Scale (VAS), Vulvar Assessment Scale (VuAS), Female Sexual Function Index (FSFI), and Menopausal Symptom Checklist (MSCL)., Results: Of 43 patients, mean age was 59 years (range, 38-78); 54% (23/43) were partnered; and 49% (21/43) were sexually active. VAS, VuAS, MSCL, and SAQ (Sexual Activity Questionnaire) scores significantly improved from baseline to each assessment point (all p < .002). FSFI total mean scores significantly increased from T1 to T2 (p < .05) and from T1 to T4 (p < .03). At T1, 41% (16/39) felt confident about future sexual activity compared to 68% (17/25) at T4 (p = .096). Severely elevated vaginal pH (>6.5) decreased from 30% (13/43) at T1 to 19% (5/26) at T4 (p = .41)., Conclusion: The HLA-based gel improved vulvovaginal health and sexual function of endometrial cancer survivors in perceived symptoms and clinical exam outcomes. HLA administration 1-2×/week is recommended for women in natural menopause; a 3-5×/week schedule appears more effective for symptom relief in cancer survivors., Competing Interests: Declaration of competing interest Outside the submitted work, Dr. Jewell reports personal fees from Covidien/Medtronic. All other authors have no conflicts of interest to report., (Copyright © 2020 Elsevier Inc. All rights reserved.)
- Published
- 2020
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12. Elusive π-helical peptide foldamers spotted by chiroptical studies.
- Author
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Di Silvio S, Bologna F, Milli L, Giuri D, Zanna N, Castellucci N, Monari M, Calvaresi M, Górecki M, Angelici G, Tomasini C, and Pescitelli G
- Subjects
- Circular Dichroism, Molecular Dynamics Simulation, Peptides chemical synthesis, Protein Structure, Secondary, Spectroscopy, Fourier Transform Infrared, Thermodynamics, Vibration, Peptides chemistry
- Abstract
A series of oligomers containing alternate l-Ala and pGlu (pyroglutamic acid) both in the L and D form have been prepared and conformationally investigated by X-ray, NMR, UV/ECD, IR/VCD and molecular modelling. X-ray diffraction analysis was possible for the shortest oligomers LL-1 and LD-1. Molecular dynamics simulations of the oligomers demonstrated that the energy landscapes of the LL-series are broad. In contrast, the energy landscapes of the LD-series are characterized by well-defined minima corresponding to specific conformational structures. A single well-defined minimum exists in the energy landscape of the largest oligomer LD-8, corresponding to a precise conformation, characterized by i + 5 →i N-HO[double bond, length as m-dash]C hydrogen bonds, typical of a π-helix. ECD and VCD spectra were measured to identify the chiroptical profiles of the oligomers. The most striking element in the ECD spectra of the LD-series is their exceptionally strong intensity, which confirms that these polypeptides attain a high degree of helical order. VCD spectra for the LD-series are well reproduced by frequency calculations when π-helix folds are employed as input structures, suggesting that a symmetrical VCD couplet around 1720 cm
-1 can be taken as the VCD signature of π-helices.- Published
- 2020
- Full Text
- View/download PDF
13. Sexual Function in Women with Colorectal/Anal Cancer.
- Author
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Canty J, Stabile C, Milli L, Seidel B, Goldfrank D, and Carter J
- Subjects
- Anus Neoplasms psychology, Colonic Neoplasms psychology, Female, Humans, Rectal Neoplasms psychology, Anus Neoplasms complications, Colonic Neoplasms complications, Rectal Neoplasms complications, Sexual Dysfunction, Physiological etiology, Sexual Dysfunctions, Psychological etiology
- Abstract
Background: Treatments for colorectal and anal cancers can have a detrimental impact on sexual function. Type of treatment, which may include surgery, radiation, and/or chemotherapy, varies by disease site and severity. Treatment and long-term side effects can impact sexual function and intimacy for patients and their partners., Aim: To review the literature regarding treatment for colorectal/anal cancer and its impact on female sexual function, and to provide an assessment of medical outcomes and patient-reported outcomes (PROs) of women with a history of colon, rectal, or anal cancer seeking sexual health treatment., Methods: We performed a PubMed search to identify peer-reviewed, English-language articles published between 2008 to 2018, using the following search terms: "colorectal cancer," or "rectal cancer," or "anal cancer" and "sexual function," or "sexual dysfunction." We also assessed the medical outcomes and PROs from our recent cross-sectional cohort study of 99 women with a history of colon, rectal, or anal cancer seeking sexual health treatment., Main Outcome Measures: Sexual function, quality of life, and PROs after colorectal/anal cancer., Results: A total of 23 studies were identified. Study designs included 15 cross-sectional survey studies, 5 longitudinal studies, 2 psychoeducational interventions, and 1 pilot study. 10 studies included only women, and 13 included both men and women. The literature and our cohort confirmed that women with colorectal/anal cancer experience changes in sexual function after diagnosis and throughout the continuum of care; however, the scarcity of data in this area indicates a need for additional intervention trials and longitudinal studies., Conclusions: Research studies with large sample sizes and long study durations are needed to help us better understand the needs of female survivors of colorectal/anal cancer. Women with colorectal/anal cancer need simple strategies and resources to address concerns of sexual function after cancer treatment. Such interventions have been shown to enhance survivorship and quality of life. Canty J, Stabile C, Milli L, et al. Sexual Function in Women with Colorectal/Anal Cancer. Sex Med Rev 2019;7:202-222., (Copyright © 2018 International Society for Sexual Medicine. Published by Elsevier Inc. All rights reserved.)
- Published
- 2019
- Full Text
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14. Active and passive diffusion processes in complex networks.
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Milli L, Rossetti G, Pedreschi D, and Giannotti F
- Abstract
Ideas, information, viruses: all of them, with their mechanisms, spread over the complex social information, viruses: all tissues described by our interpersonal relations. Usually, to simulate and understand the unfolding of such complex phenomena are used general mathematical models; these models act agnostically from the object of which they simulate the diffusion, thus considering spreading of virus, ideas and innovations alike. Indeed, such degree of abstraction makes it easier to define a standard set of tools that can be applied to heterogeneous contexts; however, it can also lead to biased, incorrect, simulation outcomes. In this work we introduce the concepts of active and passive diffusion to discriminate the degree in which individuals choice affect the overall spreading of content over a social graph. Moving from the analysis of a well-known passive diffusion schema, the Threshold model (that can be used to model peer-pressure related processes), we introduce two novel approaches whose aim is to provide active and mixed schemas applicable in the context of innovations/ideas diffusion simulation. Our analysis, performed both in synthetic and real-world data, underline that the adoption of exclusively passive / active models leads to conflicting results, thus highlighting the need of mixed approaches to capture the real complexity of the simulated system better., Competing Interests: The authors declare that they have no competing interests.Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
- Published
- 2018
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15. Forecasting success via early adoptions analysis: A data-driven study.
- Author
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Rossetti G, Milli L, Giannotti F, and Pedreschi D
- Subjects
- Forecasting, Models, Theoretical, Diffusion of Innovation
- Abstract
Innovations are continuously launched over markets, such as new products over the retail market or new artists over the music scene. Some innovations become a success; others don't. Forecasting which innovations will succeed at the beginning of their lifecycle is hard. In this paper, we provide a data-driven, large-scale account of the existence of a special niche among early adopters, individuals that consistently tend to adopt successful innovations before they reach success: we will call them Hit-Savvy. Hit-Savvy can be discovered in very different markets and retain over time their ability to anticipate the success of innovations. As our second contribution, we devise a predictive analytical process, exploiting Hit-Savvy as signals, which achieves high accuracy in the early-stage prediction of successful innovations, far beyond the reach of state-of-the-art time series forecasting models. Indeed, our findings and predictive model can be fruitfully used to support marketing strategies and product placement.
- Published
- 2017
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16. Form Matters: Stable Helical Foldamers Preferentially Target Human Monocytes and Granulocytes.
- Author
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Del Secco B, Malachin G, Milli L, Zanna N, Papini E, Cornia A, Tavano R, and Tomasini C
- Subjects
- Amino Acids chemistry, Biocompatible Materials chemical synthesis, Biocompatible Materials chemistry, Cell Survival drug effects, Cells, Cultured, Circular Dichroism, Crystallography, X-Ray, Granulocytes cytology, Granulocytes metabolism, HeLa Cells, Humans, Microscopy, Confocal, Molecular Conformation, Monocytes cytology, Monocytes metabolism, Peptoids chemical synthesis, Peptoids chemistry, Biocompatible Materials pharmacology, Granulocytes drug effects, Monocytes drug effects, Peptoids pharmacology
- Abstract
Some hybrid foldamers of various length, all containing the (4R,5S)-4-carboxy-5-methyloxazolidin-2-one (d-Oxd) moiety alternating with an l-amino acid (l-Val, l-Lys, or l-Ala), were prepared in order to study their preferred conformations and to evaluate their biological activity. Surprisingly, only the longer oligomers containing l-Ala fold into well-established helices, whereas all the other oligomers give partially unfolded turn structures. Nevertheless, they all show good biocompatibility, with no detrimental effects up to 64 μm. After equipping some selected foldamers with the fluorescent tag rhodamine B, a quantitative analysis was performed by dose- and time-response fluorescence-activated cell sorting (FACS) assays with human HeLa cells and primary blood lymphocytes, granulocytes, and monocytes. Among the cell types analyzed, the oligomers associated with monocytes and granulocytes with greatest efficacy, still visible after 24 h incubation. This effect is even more pronounced for foldamers that are able to form stable helices., (© 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.)
- Published
- 2017
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17. Pseudopeptide-Based Hydrogels Trapping Methylene Blue and Eosin Y.
- Author
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Milli L, Zanna N, Merlettini A, Di Giosia M, Calvaresi M, Focarete ML, and Tomasini C
- Subjects
- Adsorption, Hydrogen-Ion Concentration, Peptides metabolism, Rheology, Water Pollutants, Chemical, Coloring Agents chemistry, Eosine Yellowish-(YS) chemistry, Graphite chemistry, Hydrogels chemistry, Ions chemistry, Methylene Blue chemistry, Peptides chemistry, Thiazines chemistry
- Abstract
We present herein the preparation of four different hydrogels based on the pseudopeptide gelator Fmoc-l-Phe-d-Oxd-OH (Fmoc=fluorenylmethyloxycarbonyl), either by changing the gelator concentration or adding graphene oxide (GO) to the water solution. The hydrogels have been analysed by rheological studies that demonstrated that pure hydrogels are slightly stronger compared to GO-loaded hydrogels. Then the hydrogels efficiency to trap the cationic methylene blue (MB) and anionic eosin Y (EY) dyes has been analyzed. MB is efficiently trapped by both the pure hydrogel and the GO-loaded hydrogel through π-π interactions and electrostatic interactions. In contrast, the removal of the anionic EY is achieved in less satisfactory yields, due to the unfavourable electrostatic interactions between the dye, the gelator and GO., (© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.)
- Published
- 2016
- Full Text
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18. Factors Affecting the Stabilization of Polyproline II Helices in a Hydrophobic Environment.
- Author
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Zanna N, Milli L, Del Secco B, and Tomasini C
- Subjects
- Hydrophobic and Hydrophilic Interactions, Molecular Structure, Protein Conformation, Protein Structure, Secondary, Oxazolidinones chemistry, Peptides chemistry
- Abstract
Several parameters have a critical importance for the stabilization of either polyproline I (PPI) or polyproline II (PPII) helices in a hydrophobic environment. Among them, it was found out that the concentration is crucial as polyprolines at 3 mM concentration stably fold in PPII helices, that are organized in aggregates stable even after several days and are detectable by dynamic light scattering analysis. In more diluted concentration the same molecules stably fold in PPI helices, and no aggregates are found. In contrast, the introduction of a (4S,5R)-4-carboxy-5-methyloxazolidin-2-one (L-Oxd) moiety always inhibits the formation of the PPI helix, regardless of the L-Oxd position and the solution concentration.
- Published
- 2016
- Full Text
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19. Hydrogelation Induced by Fmoc-Protected Peptidomimetics.
- Author
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Zanna N, Merlettini A, Tatulli G, Milli L, Focarete ML, and Tomasini C
- Subjects
- Microscopy, Electron, Scanning, Rheology, Spectrophotometry, Ultraviolet, Temperature, Amino Acids chemistry, Fluorenes chemistry, Hydrogels chemistry, Peptidomimetics
- Abstract
Four new low molecular weight hydrogelators (LMWGs) have been prepared in multigram scale and their attitude to form hydrogels has been tested. The gelation trigger is pH variation. The resulting gels have been characterized with several techniques: measurement of the melting points (T(gel)), transparency, gelation time, and viscoelastic properties, together with ECD analysis. Among them, Fmoc-L-Tyr-D-Oxd-OH 1 is an excellent gelator that leads to the preparation of strong, transparent, and viscoelastic gels, by pH variation. UV-visible analyses have demonstrated that the gels obtained with the LMWG 1 possess high transparency, with a transmittance up to 25.6% at a wavelength of 600 nm. Results of the amplitude sweep experiments showed that the elastic response component (G') was approximately an order of magnitude larger than the viscous component, indicating an elastic rather than viscous attitude of the gels, confirmed by the frequency independence of G' and G″ values, in the range from 0.1 to 100 rad·s(-1). The thermal behavior of gel obtained from Fmoc-L-Tyr-D-Oxd-OH 1 was characterized performing an "ad hoc" rheological temperature sweep experiment, that indicated that G' remained almost constant from 23 °C up to about 65 °C while G″ increased in the same temperature range. At higher temperatures, both G' and G″ values started to slightly decrease without displaying a crossover point.
- Published
- 2015
- Full Text
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