LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 4253

Search options

  1. Article ; Online: S-Adenosyl-l-methionine restores brain mitochondrial membrane fluidity and GSH content improving Niemann-Pick type C disease.

    Goicoechea, Leire / Torres, Sandra / Fàbrega, Laura / Barrios, Mónica / Núñez, Susana / Casas, Josefina / Fabrias, Gemma / García-Ruiz, Carmen / Fernández-Checa, José C

    Redox biology

    2024  Volume 72, Page(s) 103150

    Abstract: ... shown to contribute to the progression of NPC disease. S-Adenosyl-l-methionine (SAM) regulates membrane ...

    Abstract Niemann-Pick type C (NPC) disease is a lysosomal storage disorder characterized by impaired motor coordination due to neurological defects and cerebellar dysfunction caused by the accumulation of cholesterol in endolysosomes. Besides the increase in lysosomal cholesterol, mitochondria are also enriched in cholesterol, which leads to decreased membrane fluidity, impaired mitochondrial function and loss of GSH, and has been shown to contribute to the progression of NPC disease. S-Adenosyl-l-methionine (SAM) regulates membrane physical properties through the generation of phosphatidylcholine (PC) from phosphatidylethanolamine (PE) methylation and functions as a GSH precursor by providing cysteine in the transsulfuration pathway. However, the role of SAM in NPC disease has not been investigated. Here we report that Npc1
    Language English
    Publishing date 2024-04-03
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 2701011-9
    ISSN 2213-2317 ; 2213-2317
    ISSN (online) 2213-2317
    ISSN 2213-2317
    DOI 10.1016/j.redox.2024.103150
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article ; Online: Million Veteran Program’s response to COVID-19

    Stacey B. Whitbourne / Xuan-Mai T. Nguyen / Rebecca J. Song / Emily Lord / Michelle Lyden / Kelly M. Harrington / Rachel Ward / Yanping Li / Jessica V. V. Brewer / Kelly M. Cho / Luc Djousse / Sumitra Muralidhar / Philip S. Tsao / J. Michael Gaziano / Juan P. Casas / on behalf of the MVP COVID-19 Science Program

    PLoS ONE, Vol 17, Iss

    Survey development and preliminary findings

    2022  Volume 4

    Abstract: Background In response to the novel Coronavirus Disease 2019 (COVID-19) pandemic, the Department of Veterans Affairs (VA) Million Veteran Program (MVP) organized efforts to better understand the impact of COVID-19 on Veterans by developing and deploying ... ...

    Abstract Background In response to the novel Coronavirus Disease 2019 (COVID-19) pandemic, the Department of Veterans Affairs (VA) Million Veteran Program (MVP) organized efforts to better understand the impact of COVID-19 on Veterans by developing and deploying a self-reported survey. Methods The MVP COVID-19 Survey was developed to collect COVID-19 specific elements including symptoms, diagnosis, hospitalization, behavioral and psychosocial factors and to augment existing MVP data with longitudinal collection of key domains in physical and mental health. Due to the rapidly evolving nature of the pandemic, a multipronged strategy was implemented to widely disseminate the COVID-19 Survey and capture data using both the online platform and mailings. Results We limited the findings of this paper to the initial phase of survey dissemination which began in May 2020. A total of 729,625 eligible MVP Veterans were invited to complete version 1 of the COVID-19 Survey. As of October 31, 2020, 58,159 surveys have been returned. The mean and standard deviation (SD) age of responders was 71 (11) years, 8.6% were female, 8.2% were Black, 5.6% were Hispanic, and 446 (0.8%) self-reported a COVID-19 diagnosis. Over 90% of responders reported wearing masks, practicing social distancing, and frequent hand washing. Conclusion The MVP COVID-19 Survey provides a systematic collection of data regarding COVID-19 behaviors among Veterans and represents one of the first large-scale, national surveillance efforts of COVID-19 in the Veteran population. Continued work will examine the overall response to the survey with comparison to available VA health record data.
    Keywords Medicine ; R ; Science ; Q
    Subject code 310
    Language English
    Publishing date 2022-01-01T00:00:00Z
    Publisher Public Library of Science (PLoS)
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  3. Article ; Online: The RNA fold interactome of evolutionary conserved RNA structures in S. cerevisiae.

    Casas-Vila, Nuria / Sayols, Sergi / Pérez-Martínez, Lara / Scheibe, Marion / Butter, Falk

    Nature communications

    2020  Volume 11, Issue 1, Page(s) 2789

    Abstract: RNA-binding proteins play key roles in regulation of gene expression via recognition of structural features in RNA molecules. Here we apply a quantitative RNA pull-down approach to 186 evolutionary conserved RNA structures and report 162 interacting ... ...

    Abstract RNA-binding proteins play key roles in regulation of gene expression via recognition of structural features in RNA molecules. Here we apply a quantitative RNA pull-down approach to 186 evolutionary conserved RNA structures and report 162 interacting proteins. Unlike global RNA interactome capture, we associate individual RNA structures within messenger RNA with their interacting proteins. Of our binders 69% are known RNA-binding proteins, whereas some are previously unrelated to RNA binding and do not harbor canonical RNA-binding domains. While current knowledge about RNA-binding proteins relates to their functions at 5' or 3'-UTRs, we report a significant number of them binding to RNA folds in the coding regions of mRNAs. Using an in vivo reporter screen and pulsed SILAC, we characterize a subset of mRNA-RBP pairs and thus connect structural RNA features to functionality. Ultimately, we here present a generic, scalable approach to interrogate the increasing number of RNA structural motifs.
    MeSH term(s) 3' Untranslated Regions/genetics ; 5' Untranslated Regions/genetics ; Base Sequence ; Conserved Sequence/genetics ; Epistasis, Genetic ; Evolution, Molecular ; Genes, Reporter ; Genome, Fungal ; Green Fluorescent Proteins/metabolism ; Nucleic Acid Conformation ; Nucleotide Motifs/genetics ; Protein Biosynthesis ; Proteome/metabolism ; RNA, Fungal/chemistry ; RNA, Messenger/genetics ; RNA, Messenger/metabolism ; RNA-Binding Proteins/metabolism ; Reproducibility of Results ; Saccharomyces cerevisiae/genetics ; Saccharomyces cerevisiae Proteins/genetics ; Saccharomyces cerevisiae Proteins/metabolism
    Chemical Substances 3' Untranslated Regions ; 5' Untranslated Regions ; Proteome ; RNA, Fungal ; RNA, Messenger ; RNA-Binding Proteins ; Saccharomyces cerevisiae Proteins ; Green Fluorescent Proteins (147336-22-9)
    Language English
    Publishing date 2020-06-03
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2553671-0
    ISSN 2041-1723 ; 2041-1723
    ISSN (online) 2041-1723
    ISSN 2041-1723
    DOI 10.1038/s41467-020-16555-4
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article ; Online: Author’s reply to

    K. Casas-García / L. A. Quezada-Téllez / S. Carrillo-Moreno / J. J. Flores-Godoy / Guillermo Fernández-Anaya

    Nova Scientia, Vol 9, Iss

    Comments on “Asymptotically stable equilibrium points in new chaotic systems”

    2017  Volume 19

    Abstract: ... Casas-García et al. 2016) may have homoclinic or heteroclinic orbits and may seem chaos in the Shilnikov ...

    Abstract Since theorem 1 of (Elhadj and Sprott, 2012) is incorrect, some of the systems found in the article (Casas-García et al. 2016) may have homoclinic or heteroclinic orbits and may seem chaos in the Shilnikov sense. However, the fundamental contribution of our paper was to find ten simple, three-dimensional dynamic systems with non-linear quadratic terms that have an asymptotically stable equilibrium point and are chaotic, which was achieved. These were obtained using the Monte Carlo method applied specifically for the search of these systems.
    Keywords chaotic systems ; asymptotically stable equilibrium ; non-existence of Shilnikov chaos ; Lyapunov exponents ; Science ; Q ; Science (General) ; Q1-390 ; Social Sciences ; H ; Social sciences (General) ; H1-99
    Language English
    Publishing date 2017-08-01T00:00:00Z
    Publisher Universidad De La Salle Bajío
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  5. Article ; Online: Mobile Applications for Resting Tremor Assessment in Parkinson’s Disease

    Paloma Moreta-de-Esteban / Patricia Martín-Casas / Rosa María Ortiz-Gutiérrez / Sofía Straudi / Roberto Cano-de-la-Cuerda

    Journal of Clinical Medicine, Vol 12, Iss 2334, p

    A Systematic Review

    2023  Volume 2334

    Abstract: 1) Background: Resting tremor is a motor manifestation present in most Parkinson’s disease (PD ...

    Abstract (1) Background: Resting tremor is a motor manifestation present in most Parkinson’s disease (PD) patients. For its assessment, several scales have been created, but mobile applications could help in objectively assessing resting tremor in PD patients in person and/or remotely in a more ecological scenario. (2) Methods: a systematic review following the PRISMA recommendations was conducted in scientific databases (PubMed, Medline, Science Direct, Academic Search Premier, and Web of Science) and in the main mobile application markets (Google Play, iOS App Store, and Windows Store) to determine the applications available for the assessment of resting tremor in patients with PD using only the measurement components of the phone itself (accelerometers and gyroscopes). (3) Results: 14 articles that used mobile apps to assess resting tremor in PD were included, and 13 apps were identified in the mobile application markets for the same purpose. The risk of bias and of applicability concerns of the articles analyzed was low. Mobile applications found in the app markets met an average of 85.09% of the recommendations for the development of medical mobile applications. (4) Conclusions: the use of mobile applications for the evaluation of resting tremor in PD patients has great potential, but validation studies for this purpose are scarce.
    Keywords assessment ; mobile applications ; Parkinson’s disease ; tremor ; Medicine ; R
    Subject code 600
    Language English
    Publishing date 2023-03-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  6. Article ; Online: The kaleidoscopic perspective in Colum McCann’s Let the Great World Spin (2009)

    María del Rosario Casas Coelho

    ABEI Journal, Vol 23, Iss 1, Pp 71-

    trauma and transculturality

    2022  Volume 84

    Abstract: This article argues that Colum McCann’s novel Let the Great World Spin (2009) epitomizes the Irish ... theories, this article analyses some of the literary features of McCann’s formal experimentation ...

    Abstract This article argues that Colum McCann’s novel Let the Great World Spin (2009) epitomizes the Irish transcultural novel. It portrays transculturality through a considerable diversity of damaged characters who bond to overcome a common trauma. By engaging with transcultural, transnational, and postmulticultural theories, this article analyses some of the literary features of McCann’s formal experimentation that eventually alleviate pain and foster tolerance and empathy among people with different backgrounds. Then, it explores the universalisation of trauma, where the local is made global and the characters deploy similar responses when exposed to traumatic situations. The novel, an attempt to find grace after the trauma of 9/11, presents many characters who advocate for plural perspectives and, as a kaleidoscope, it brings to the centre of the narrative the differences among people and opens possibilities for beautiful and new configurations.
    Keywords let the great world spin ; transculturality ; transnationalism ; trauma healing ; bonding ; History (General) and history of Europe ; D
    Subject code 820
    Language English
    Publishing date 2022-01-01T00:00:00Z
    Publisher Associação Brasileira de Estudos Irlandeses
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  7. Article ; Online: Comparative Effectiveness of BNT162b2 and mRNA-1273 Vaccines in U.S. Veterans.

    Dickerman, Barbra A / Gerlovin, Hanna / Madenci, Arin L / Kurgansky, Katherine E / Ferolito, Brian R / Figueroa Muñiz, Michael J / Gagnon, David R / Gaziano, J Michael / Cho, Kelly / Casas, Juan P / Hernán, Miguel A

    The New England journal of medicine

    2021  Volume 386, Issue 2, Page(s) 105–115

    Abstract: ... the electronic health records of U.S. veterans who received a first dose of the BNT162b2 or mRNA-1273 vaccine between January 4 ...

    Abstract Background: The messenger RNA (mRNA)-based vaccines BNT162b2 and mRNA-1273 are more than 90% effective against coronavirus disease 2019 (Covid-19). However, their comparative effectiveness for a range of outcomes across diverse populations is unknown.
    Methods: We emulated a target trial using the electronic health records of U.S. veterans who received a first dose of the BNT162b2 or mRNA-1273 vaccine between January 4 and May 14, 2021, during a period marked by predominance of the SARS-CoV-2 B.1.1.7 (alpha) variant. We matched recipients of each vaccine in a 1:1 ratio according to their risk factors. Outcomes included documented severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection, symptomatic Covid-19, hospitalization for Covid-19, admission to an intensive care unit (ICU) for Covid-19, and death from Covid-19. We estimated risks using the Kaplan-Meier estimator. To assess the influence of the B.1.617.2 (delta) variant, we emulated a second target trial that involved veterans vaccinated between July 1 and September 20, 2021.
    Results: Each vaccine group included 219,842 persons. Over 24 weeks of follow-up in a period marked by alpha-variant predominance, the estimated risk of documented infection was 5.75 events per 1000 persons (95% confidence interval [CI], 5.39 to 6.23) in the BNT162b2 group and 4.52 events per 1000 persons (95% CI, 4.17 to 4.84) in the mRNA-1273 group. The excess number of events per 1000 persons for BNT162b2 as compared with mRNA-1273 was 1.23 (95% CI, 0.72 to 1.81) for documented infection, 0.44 (95% CI, 0.25 to 0.70) for symptomatic Covid-19, 0.55 (95% CI, 0.36 to 0.83) for hospitalization for Covid-19, 0.10 (95% CI, 0.00 to 0.26) for ICU admission for Covid-19, and 0.02 (95% CI, -0.06 to 0.12) for death from Covid-19. The corresponding excess risk (BNT162b2 vs. mRNA-1273) of documented infection over 12 weeks of follow-up in a period marked by delta-variant predominance was 6.54 events per 1000 persons (95% CI, -2.58 to 11.82).
    Conclusions: The 24-week risk of Covid-19 outcomes was low after vaccination with mRNA-1273 or BNT162b2, although risks were lower with mRNA-1273 than with BNT162b2. This pattern was consistent across periods marked by alpha- and delta-variant predominance. (Funded by the Department of Veterans Affairs and others.).
    MeSH term(s) 2019-nCoV Vaccine mRNA-1273 ; Adult ; Aged ; Aged, 80 and over ; BNT162 Vaccine ; COVID-19/epidemiology ; COVID-19/mortality ; COVID-19/prevention & control ; Female ; Hospitalization/statistics & numerical data ; Humans ; Incidence ; Intensive Care Units ; Male ; Middle Aged ; Risk Factors ; United States/epidemiology ; Vaccine Efficacy/statistics & numerical data ; Veterans
    Chemical Substances 2019-nCoV Vaccine mRNA-1273 (EPK39PL4R4) ; BNT162 Vaccine (N38TVC63NU)
    Language English
    Publishing date 2021-12-01
    Publishing country United States
    Document type Comparative Study ; Journal Article ; Observational Study ; Research Support, N.I.H., Extramural ; Research Support, U.S. Gov't, Non-P.H.S.
    ZDB-ID 207154-x
    ISSN 1533-4406 ; 0028-4793
    ISSN (online) 1533-4406
    ISSN 0028-4793
    DOI 10.1056/NEJMoa2115463
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article ; Online: Racial and Ethnic Disparities in U.S. Veteran Health Characteristics.

    Ward, Rachel E / Nguyen, Xuan-Mai T / Li, Yanping / Lord, Emily M / Lecky, Vanessa / Song, Rebecca J / Casas, Juan P / Cho, Kelly / Gaziano, John Michael / Harrington, Kelly M / Whitbourne, Stacey B / On Behalf Of The Va Million Veteran Program

    International journal of environmental research and public health

    2021  Volume 18, Issue 5

    Abstract: Racial/ethnic health disparities persist among veterans despite comparable access and quality of care. We describe racial/ethnic differences in self-reported health characteristics among 437,413 men and women (mean age (SD) = 64.5 (12.6), 91% men, 79% ... ...

    Abstract Racial/ethnic health disparities persist among veterans despite comparable access and quality of care. We describe racial/ethnic differences in self-reported health characteristics among 437,413 men and women (mean age (SD) = 64.5 (12.6), 91% men, 79% White) within the Million Veteran Program. The Cochran-Mantel-Haenszel test and linear mixed models were used to compare age-standardized frequencies and means across race/ethnicity groups, stratified by gender. Black, Hispanic, and Other race men and women reported worse self-rated health, greater VA healthcare utilization, and more combat exposure than Whites. Compared to White men, Black and Other men reported more circulatory, musculoskeletal, mental health, and infectious disease conditions while Hispanic men reported fewer circulatory and more mental health, infectious disease, kidney, and neurological conditions. Compared to White women, Black women reported more circulatory and infectious disease conditions and Other women reported more infectious disease conditions. Smoking rates were higher among Black men, but lower for other minority groups compared to Whites. Minority groups were less likely to drink alcohol and had lower physical fitness than Whites. By identifying differences in burden of various health conditions and risk factors across different racial/ethnic groups, our findings can inform future studies and ultimately interventions addressing disparities.
    MeSH term(s) African Americans ; Ethnic Groups ; European Continental Ancestry Group ; Female ; Healthcare Disparities ; Hispanic Americans ; Humans ; Male ; United States/epidemiology ; Veterans
    Language English
    Publishing date 2021-03-02
    Publishing country Switzerland
    Document type Journal Article ; Research Support, U.S. Gov't, Non-P.H.S.
    ISSN 1660-4601
    ISSN (online) 1660-4601
    DOI 10.3390/ijerph18052411
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  9. Article ; Online: Gd 2 O 3 Doped UO 2 (s) Corrosion in the Presence of Silicate and Calcium under Alkaline Conditions

    Sonia García-Gómez / Javier Giménez / Ignasi Casas / Jordi Llorca / Joan De Pablo

    Inorganics, Vol 11, Iss 12, p

    2023  Volume 469

    Abstract: The anodic reactivity of UO 2 and UO 2 doped with Gd 2 O 3 was investigated by electrochemical methods in slightly alkaline conditions in the presence of silicate and calcium. At the end of the experiments, the electrodes were analysed by X-ray ... ...

    Abstract The anodic reactivity of UO 2 and UO 2 doped with Gd 2 O 3 was investigated by electrochemical methods in slightly alkaline conditions in the presence of silicate and calcium. At the end of the experiments, the electrodes were analysed by X-ray photoelectron spectroscopy to determine the oxidation state of the uranium on the surface. The experiments showed that the increase in gadolinia doping level led to a reduction in the reactivity of UO 2 , this effect being more marked at the highest doping level studied (10 wt.% Gd 2 O 3 ). This behaviour could be attributed to the formation of dopant-vacancy clusters (Gd III -Ov), which could limit the accommodation of excess O 2− into the UO 2 lattice. In addition, the presence of Ca 2+ and SiO 3 2− decreased the anodic dissolution of UO 2 . In summary, the Gd 2 O 3 doping in presence of silicate and calcium was found to strongly decrease the oxidative dissolution of UO 2 , which is a beneficial situation regarding the long-term management of spent nuclear fuel in a repository.
    Keywords UO 2 (s) ; gadolinia doping ; anodic oxidation ; X-ray photoelectron spectroscopy ; silicate and calcium ions ; Inorganic chemistry ; QD146-197
    Subject code 290
    Language English
    Publishing date 2023-12-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  10. Article ; Online: Influence of cell-cell contact between L. thermotolerans and S. cerevisiae on yeast interactions and the exo-metabolome.

    Petitgonnet, Clément / Klein, Géraldine L / Roullier-Gall, Chloé / Schmitt-Kopplin, Philippe / Quintanilla-Casas, Beatriz / Vichi, Stefania / Julien-David, Diane / Alexandre, Hervé

    Food microbiology

    2019  Volume 83, Page(s) 122–133

    Abstract: Sequential fermentation of grape must inoculated with L. thermotolerans and then S. cerevisiae 24 h ... The cell viability of S. cerevisiae decreased under both conditions, but the decrease was greater if there was cell ...

    Abstract Sequential fermentation of grape must inoculated with L. thermotolerans and then S. cerevisiae 24 h later (typical wine-making practice) was conducted with or without cell-cell contact between the two yeast species. We monitored cell viability of the two species throughout fermentation by flow cytometry. The cell viability of S. cerevisiae decreased under both conditions, but the decrease was greater if there was cell-cell contact. An investigation of the nature of the interactions showed competition between the two species for nitrogen compounds, oxygen, and must sterols. Volatile-compound analysis showed differences between sequential and pure fermentation and that cell-cell contact modifies yeast metabolism, as the volatile-compound profile was significantly different from that of sequential fermentation without cell-cell contact. We further confirmed that cell-cell contact modifies yeast metabolism by analyzing the exo-metabolome of all fermentations by FT-ICR-MS analysis. These analyses show specific metabolite production and quantitative metabolite changes associated with each fermentation condition. This study shows that cell-cell contact not only affects cell viability, as already reported, but markedly affects yeast metabolism.
    MeSH term(s) Coculture Techniques ; Ethanol ; Fermentation ; Metabolome ; Microbial Interactions ; Microbial Viability ; Oxygen/metabolism ; Saccharomyces cerevisiae/metabolism ; Saccharomycetales/metabolism ; Vitis/microbiology ; Wine/microbiology
    Chemical Substances Ethanol (3K9958V90M) ; Oxygen (S88TT14065)
    Language English
    Publishing date 2019-05-17
    Publishing country England
    Document type Journal Article
    ZDB-ID 50892-5
    ISSN 1095-9998 ; 0740-0020
    ISSN (online) 1095-9998
    ISSN 0740-0020
    DOI 10.1016/j.fm.2019.05.005
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top