LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 268

Search options

  1. Book: Antibacterial surfaces

    Ivanova, Elena P. / Crawford, Russell J.

    2015  

    Author's details Elena P. Ivanova ; Russell J. Crawford ed
    Keywords Antibacterial ; Anti-biofouling ; Bactericidal ; Nanotopography ; Fabrication
    Language English
    Size V, 172 S. : Ill., graph. Darst., 235 mm x 155 mm
    Publisher Springer
    Publishing place Cham u.a.
    Publishing country Switzerland
    Document type Book
    HBZ-ID HT018816367
    ISBN 978-3-319-18593-4 ; 978-3-319-18594-1 ; 3-319-18593-4 ; 3-319-18594-2
    Database Catalogue ZB MED Medicine, Health

    More links

    Kategorien

  2. Book: Nanoscale structure and properties of microbial cell surfaces

    Ivanova, Elena P.

    2007  

    Author's details Elena P. Ivanova, ed
    Keywords Bacteria / ultrastructure ; Bacterial Physiology ; Microscopy, Scanning Probe / methods
    Language English
    Size XIV, 269 S. : Ill., graph. Darst., 27 cm
    Publisher Nova Science Publ
    Publishing place New York
    Publishing country United States
    Document type Book
    Note Literaturangaben
    HBZ-ID HT015744877
    ISBN 1-60021-242-5 ; 978-1-60021-242-0
    Database Catalogue ZB MED Medicine, Health

    More links

    Kategorien

  3. Article ; Online: Engineered Sustainable Omniphobic Coatings to Control Liquid Spreading on Food-Contact Materials.

    Ghasemlou, Mehran / Oladzadabbasabadi, Nazila / Ivanova, Elena P / Adhikari, Benu / Barrow, Colin J

    ACS applied materials & interfaces

    2024  Volume 16, Issue 13, Page(s) 15657–15686

    Abstract: The adhesion of sticky liquid foods to a contacting surface can cause many technical challenges. The food manufacturing sector is confronted with many critical issues that can be overcome with long-lasting and highly nonwettable coatings. Nanoengineered ... ...

    Abstract The adhesion of sticky liquid foods to a contacting surface can cause many technical challenges. The food manufacturing sector is confronted with many critical issues that can be overcome with long-lasting and highly nonwettable coatings. Nanoengineered biomimetic surfaces with distinct wettability and tunable interfaces have elicited increasing interest for their potential use in addressing a broad variety of scientific and technological applications, such as antifogging, anti-icing, antifouling, antiadhesion, and anticorrosion. Although a large number of nature-inspired surfaces have emerged, food-safe nonwetted surfaces are still in their infancy, and numerous structural design aspects remain unexplored. This Review summarizes the latest scientific research regarding the key principles, fabrication methods, and applications of three important categories of nonwettable surfaces: superhydrophobic, liquid-infused slippery, and re-entrant structured surfaces. The Review is particularly focused on new insights into the antiwetting mechanisms of these nanopatterned structures and discovering efficient platform methodologies to guide their rational design when in contact with food materials. A detailed description of the current opportunities, challenges, and future scale-up possibilities of these nanoengineered surfaces in the food industry is also provided.
    Language English
    Publishing date 2024-03-22
    Publishing country United States
    Document type Journal Article ; Review
    ISSN 1944-8252
    ISSN (online) 1944-8252
    DOI 10.1021/acsami.4c01329
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article ; Online: Impact of multiscale surface topography characteristics on Candida albicans biofilm formation: From cell repellence to fungicidal activity.

    Le, Phuc H / Linklater, Denver P / Medina, Arturo Aburto / MacLaughlin, Shane / Crawford, Russell J / Ivanova, Elena P

    Acta biomaterialia

    2024  Volume 177, Page(s) 20–36

    Abstract: While there has been significant research conducted on bacterial colonization on implant materials, with a focus on developing surface modifications to prevent the formation of bacterial biofilms, the study of Candida albicans biofilms on implantable ... ...

    Abstract While there has been significant research conducted on bacterial colonization on implant materials, with a focus on developing surface modifications to prevent the formation of bacterial biofilms, the study of Candida albicans biofilms on implantable materials is still in its infancy, despite its growing relevance in implant-associated infections. C. albicans fungal infections represent a significant clinical concern due to their severity and associated high fatality rate. Pathogenic yeasts account for an increasing proportion of implant-associated infections, since Candida spp. readily form biofilms on medical and dental device surfaces. In addition, these biofilms are highly antifungal-resistant, making it crucial to explore alternative solutions for the prevention of Candida implant-associated infections. One promising approach is to modify the surface properties of the implant, such as the wettability and topography of these substrata, to prevent the initial Candida attachment to the surface. This review summarizes recent research on the effects of surface wettability, roughness, and architecture on Candida spp. attachment to implantable materials. The nanofabrication of material surfaces are highlighted as a potential method for the prevention of Candida spp. attachment and biofilm formation on medical implant materials. Understanding the mechanisms by which Candida spp. attach to surfaces will allow such surfaces to be designed such that the incidence and severity of Candida infections in patients can be significantly reduced. Most importantly, this approach could also substantially reduce the need to use antifungals for the prevention and treatment of these infections, thereby playing a crucial role in minimizing the possibility contributing to instances of antimicrobial resistance. STATEMENT OF SIGNIFICANCE: In this review we provide a systematic analysis of the role that surface characteristics, such as wettability, roughness, topography and architecture, play on the extent of C. albicans cells attachment that will occur on biomaterial surfaces. We show that exploiting bioinspired surfaces could significantly contribute to the prevention of antimicrobial resistance to antifungal and chemical-based preventive measures. By reducing the attachment and growth of C. albicans cells using surface structure approaches, we can decrease the need for antifungals, which are conventionally used to treat such infections.
    MeSH term(s) Humans ; Candida albicans ; Antifungal Agents/pharmacology ; Antifungal Agents/chemistry ; Biofilms ; Surface Properties ; Biocompatible Materials/chemistry
    Chemical Substances Antifungal Agents ; Biocompatible Materials
    Language English
    Publishing date 2024-02-09
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 2173841-5
    ISSN 1878-7568 ; 1742-7061
    ISSN (online) 1878-7568
    ISSN 1742-7061
    DOI 10.1016/j.actbio.2024.02.006
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article ; Online: Fluorescent Nanocarbons: From Synthesis and Structure to Cancer Imaging and Therapy.

    Ghasemlou, Mehran / Pn, Navya / Alexander, Katia / Zavabeti, Ali / Sherrell, Peter C / Ivanova, Elena P / Adhikari, Benu / Naebe, Minoo / Bhargava, Suresh K

    Advanced materials (Deerfield Beach, Fla.)

    2024  Volume 36, Issue 19, Page(s) e2312474

    Abstract: Nanocarbons are emerging at the forefront of nanoscience, with diverse carbon nanoforms emerging over the past two decades. Early cancer diagnosis and therapy, driven by advanced chemistry techniques, play a pivotal role in mitigating mortality rates ... ...

    Abstract Nanocarbons are emerging at the forefront of nanoscience, with diverse carbon nanoforms emerging over the past two decades. Early cancer diagnosis and therapy, driven by advanced chemistry techniques, play a pivotal role in mitigating mortality rates associated with cancer. Nanocarbons, with an attractive combination of well-defined architectures, biocompatibility, and nanoscale dimension, offer an incredibly versatile platform for cancer imaging and therapy. This paper aims to review the underlying principles regarding the controllable synthesis, fluorescence origins, cellular toxicity, and surface functionalization routes of several classes of nanocarbons: carbon nanodots, nanodiamonds, carbon nanoonions, and carbon nanohorns. This review also highlights recent breakthroughs regarding the green synthesis of different nanocarbons from renewable sources. It also presents a comprehensive and unified overview of the latest cancer-related applications of nanocarbons and how they can be designed to interface with biological systems and work as cancer diagnostics and therapeutic tools. The commercial status for large-scale manufacturing of nanocarbons is also presented. Finally, it proposes future research opportunities aimed at engendering modifiable and high-performance nanocarbons for emerging applications across medical industries. This work is envisioned as a cornerstone to guide interdisciplinary teams in crafting fluorescent nanocarbons with tailored attributes that can revolutionize cancer diagnostics and therapy.
    MeSH term(s) Humans ; Neoplasms/diagnostic imaging ; Neoplasms/drug therapy ; Neoplasms/diagnosis ; Fluorescent Dyes/chemistry ; Animals ; Optical Imaging ; Nanoparticles/chemistry ; Carbon/chemistry
    Chemical Substances Fluorescent Dyes ; Carbon (7440-44-0)
    Language English
    Publishing date 2024-02-06
    Publishing country Germany
    Document type Journal Article ; Review
    ZDB-ID 1474949-X
    ISSN 1521-4095 ; 0935-9648
    ISSN (online) 1521-4095
    ISSN 0935-9648
    DOI 10.1002/adma.202312474
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article ; Online: Turning food waste into value-added carbon dots for sustainable food packaging application: A review.

    Oladzadabbasabadi, Nazila / Dheyab, Mohammed Ali / Nafchi, Abdorreza Mohammadi / Ghasemlou, Mehran / Ivanova, Elena P / Adhikari, Benu

    Advances in colloid and interface science

    2023  Volume 321, Page(s) 103020

    Abstract: Carbon dots (CDs) are a recent addition to the nanocarbon family, encompassing both crystalline and amorphous phases. They have sparked significant research interest due to their unique electrical and optical properties, remarkable biocompatibility, ... ...

    Abstract Carbon dots (CDs) are a recent addition to the nanocarbon family, encompassing both crystalline and amorphous phases. They have sparked significant research interest due to their unique electrical and optical properties, remarkable biocompatibility, outstanding mechanical characteristics, customizable surface chemistry, and negligible cytotoxicity. Their current applications are mainly limited to flexible photonic and biomedical devices, but they have also garnered attention for their potential use in intelligent packaging. The conversion of food waste into CDs further contributes to the concept of the circular economy. It provides a comprehensive overview of emerging green technologies, energy-saving reactions, and cost-effective starting materials involved in the synthesis of CDs. It also highlights the unique properties of biomass-derived CDs, focusing on their structural performance, cellular toxicity, and functional characteristics. The application of CDs in the food industry, including food packaging, is summarized in a concise manner. This paper sheds light on the current challenges and prospects of utilizing CDs in the packaging industry. It aims to provide researchers with a roadmap to tailor the properties of CDs to suit specific applications in the food industry, particularly in food packaging.
    MeSH term(s) Food Packaging ; Food ; Refuse Disposal ; Carbon ; Electricity ; Quantum Dots
    Chemical Substances Carbon (7440-44-0)
    Language English
    Publishing date 2023-10-12
    Publishing country Netherlands
    Document type Journal Article ; Review
    ZDB-ID 210507-x
    ISSN 1873-3727 ; 0001-8686
    ISSN (online) 1873-3727
    ISSN 0001-8686
    DOI 10.1016/j.cis.2023.103020
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article: Localization of nanospheres in pheochromocytoma-like cells following exposure to high-frequency electromagnetic fields at 18 GHz.

    Tharushi Perera, Palalle G / Linklater, Denver P / Kosyer, Erim / Croft, Rodney / Ivanova, Elena P

    Royal Society open science

    2022  Volume 9, Issue 6, Page(s) 220520

    Abstract: Exposure to high-frequency (HF) electromagnetic fields (EMFs) at 18 GHz was previously found to induce reversible cell permeabilization in eukaryotic cells; however, the fate of internalized foreign objects inside the cell remains unclear. Here, silica ... ...

    Abstract Exposure to high-frequency (HF) electromagnetic fields (EMFs) at 18 GHz was previously found to induce reversible cell permeabilization in eukaryotic cells; however, the fate of internalized foreign objects inside the cell remains unclear. Here, silica core-shell gold nanospheres (Au NS) of 20 ± 5 nm diameter were used to study the localization of Au NS in pheochromocytoma (PC 12) cells after exposure to HF EMFs at 18 GHz. Internalization of Au NS was confirmed using fluorescence microscopy and transmission electron microscopy. Analysis based on corresponding scanning transmission electron microscopy energy-dispersive spectroscopy revealed the presence of the Au NS free within the PC 12 cell membrane, cytoplasm, enclosed within intracellular vesicles and sequestered in vacuoles. The results obtained in this work highlight that exposure to HF EMFs could be used as an efficient technique with potential for effective delivery of drugs, genetic material, and nanomaterials into cells for the purpose of cellular manipulation or therapy.
    Language English
    Publishing date 2022-06-29
    Publishing country England
    Document type Journal Article
    ZDB-ID 2787755-3
    ISSN 2054-5703
    ISSN 2054-5703
    DOI 10.1098/rsos.220520
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article ; Online: Biodegradation of novel bioplastics made of starch, polyhydroxyurethanes and cellulose nanocrystals in soil environment.

    Ghasemlou, Mehran / Daver, Fugen / Murdoch, Billy J / Ball, Andrew S / Ivanova, Elena P / Adhikari, Benu

    The Science of the total environment

    2022  Volume 815, Page(s) 152684

    Abstract: Plastic pollution is recognized as a major environmental problem in many countries. Over the last decade, academics have embraced research on bioplastics to discover newer high-end green materials. However, the end-of-life environmental fate of such ... ...

    Abstract Plastic pollution is recognized as a major environmental problem in many countries. Over the last decade, academics have embraced research on bioplastics to discover newer high-end green materials. However, the end-of-life environmental fate of such materials is not adequately understood. Non-isocyanate polyhydroxyurethanes (PHUs) are green engineering materials with huge potential to replace traditional polyurethanes. Despite this immense potential, a number of questions about their environmental fate remain unanswered. The present study investigated the extent and mechanisms underlying soil biodegradation of PHUs and determined whether the deterioration of PHUs within starch bioplastics (ST) can improve the biodegradation of starch (ST)-PHU hybrids. Soil microbiomes managed to effectively and quickly digest not only PHUs but also ST-PHU hybrids. All ST-PHU hybrids were characterized by exceptional biodegradability with mass losses of up to ~88% following a soil burial time of only 120 days. The biodegradation of ST-alone bioplastics was 69% under identical conditions. The presence of cellulose nanocrystals (CNC) reduced the potential for the soil microbial community to degrade nanohybrids (ST-PHU-CNC). Microbially digested bioplastics with PHU presented less stages of thermal degradation, and reduced intensities of FTIR, NMR and XPS signals compared to the original films, indicating improvement of the biodegradation mechanism. These findings suggested the positive environmental implications of PHU in improving the bioplastic's degradation and their potential for future applications.
    MeSH term(s) Biodegradation, Environmental ; Cellulose ; Nanoparticles ; Plastics ; Soil ; Starch
    Chemical Substances Plastics ; Soil ; Cellulose (9004-34-6) ; Starch (9005-25-8)
    Language English
    Publishing date 2022-01-05
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 121506-1
    ISSN 1879-1026 ; 0048-9697
    ISSN (online) 1879-1026
    ISSN 0048-9697
    DOI 10.1016/j.scitotenv.2021.152684
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  9. Article: Long-term outcomes of different rehabilitation programs in patients with long COVID syndrome: a cohort prospective study.

    Grishechkina, Irina A / Lobanov, Andrey A / Andronov, Sergei V / Rachin, Andrey P / Fesyun, Anatoliy D / Ivanova, Elena P / Masiero, Stefano / Maccarone, Maria Chiara

    European journal of translational myology

    2023  Volume 33, Issue 2

    Abstract: After the resolution of the acute SARS-COV-2 infection, an important percentage of patients do not fully recover and continue to present several symptoms. Nevertheless, there is a lack of data in the literature on the effects of rehabilitation programs ... ...

    Abstract After the resolution of the acute SARS-COV-2 infection, an important percentage of patients do not fully recover and continue to present several symptoms. Nevertheless, there is a lack of data in the literature on the effects of rehabilitation programs on medium- and long-term long COVID symptoms. Therefore, the aim of this study was to evaluate the long-term outcomes after rehabilitation programs in long COVID syndrome patients. A prospective cohort study was conducted from August 2021 to March 2022, involving 113 patients with long COVID syndrome. The patients in the experimental group (EG, n=25) received a tailored and multidisciplinary rehabilitative program, involving aquatic exercises, respiratory and motor exercises, social integration training and neuropsychologic sessions, LASER therapy and magnetotherapy. Patients in the other three comparison groups received eastern medicine techniques (CG1), balneotherapy and physiotherapy (group CG2), self-training and home-based physical exercise (CG3). Once the several rehabilitation protocols had been performed, a structured telephone contact was made with the patients after 6 months ± 7 days from the end of the rehabilitation treatment, in order to record the frequency of hospital ad-missions due to exacerbation of post-exacerbation syndrome, death or disability, and the need for other types of care or drugs. The patients in the comparison groups were more likely to request therapeutic care for emerging long COVID symptoms (χ2=6.635, p=0.001; χ2=13.463, p=0.001; χ2=10.949, p=0.001, respectively), as well as more likely to be hospitalized (χ2=5.357, p=0.021; χ2=0.125, p=0.724; χ2=0.856, p=0.355, respectively) when compared to the patients of the EG. The relative risk (RR) of hospital admissions in the observed cohort was 0.143 ±1,031 (СI: 0.019; 1.078); 0.580±1,194 (CI: 0.056; 6.022); 0,340±1,087 (CI: 0.040; 2.860). The RR of hospital admissions for patients with long COVID syndrome was reduced by 85.7%; 42.0% and 66.0%, respectively, when the experimental rehabilitation technique was employed. In conclusion, a tailored and multidisciplinary rehabilitative program seems to have a better preventive effect not only in the short term, but also over the next 6 months, avoiding the new onset of disabilities and the use of medicines and specialist advice, than other rehabilitative programs. Future studies will need to further investigate these aspects to identify the best rehabilitation therapy, also in terms of cost-effectiveness, for these patients.
    Language English
    Publishing date 2023-04-13
    Publishing country Italy
    Document type Journal Article
    ZDB-ID 2545577-1
    ISSN 2037-7460 ; 2037-7452
    ISSN (online) 2037-7460
    ISSN 2037-7452
    DOI 10.4081/ejtm.2023.11063
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article ; Online: Biomimetic Nanopillar Silicon Surfaces Rupture Fungal Spores.

    Linklater, Denver P / Le, Phuc H / Aburto-Medina, Arturo / Crawford, Russell J / Maclaughlin, Shane / Juodkazis, Saulius / Ivanova, Elena P

    International journal of molecular sciences

    2023  Volume 24, Issue 2

    Abstract: The mechano-bactericidal action of nanostructured surfaces is well-documented; however, synthetic nanostructured surfaces have not yet been explored for their antifungal properties toward filamentous fungal species. In this study, we developed a ... ...

    Abstract The mechano-bactericidal action of nanostructured surfaces is well-documented; however, synthetic nanostructured surfaces have not yet been explored for their antifungal properties toward filamentous fungal species. In this study, we developed a biomimetic nanostructured surface inspired by dragonfly wings. A high-aspect-ratio nanopillar topography was created on silicon (nano-Si) surfaces using inductively coupled plasma reactive ion etching (ICP RIE). To mimic the superhydrophobic nature of insect wings, the nano-Si was further functionalised with trichloro(1H,1H,2H,2H-perfluorooctyl)silane (PFTS). The viability of
    MeSH term(s) Animals ; Silicon/pharmacology ; Silicon/chemistry ; Spores, Fungal ; Biomimetics/methods ; Antifungal Agents ; Odonata ; Surface Properties
    Chemical Substances Silicon (Z4152N8IUI) ; Antifungal Agents
    Language English
    Publishing date 2023-01-09
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2019364-6
    ISSN 1422-0067 ; 1422-0067 ; 1661-6596
    ISSN (online) 1422-0067
    ISSN 1422-0067 ; 1661-6596
    DOI 10.3390/ijms24021298
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top