LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 299

Search options

  1. Article ; Online: MRI findings in 1 case of primary gallbladder lymphoma.

    Wang, Xiaoxuan / Sun, Min / Kang, Liqing

    BJR case reports

    2024  Volume 10, Issue 3, Page(s) uaae011

    Abstract: We describe a case of gallbladder extra-nodal marginal zone B-cell lymphoma of mucosa-associated lymphoid tissue (MALT-ML). MALT-ML is rare, and its clinical manifestations are lack of specificity. A few cases have been reported, and no characteristic ... ...

    Abstract We describe a case of gallbladder extra-nodal marginal zone B-cell lymphoma of mucosa-associated lymphoid tissue (MALT-ML). MALT-ML is rare, and its clinical manifestations are lack of specificity. A few cases have been reported, and no characteristic imaging features have been described. We discussed the challenges of MRI in diagnosing MALT-ML of gallbladder, especially in differentiating it from gallbladder cancer. We found a "comb-like" sign in the inner wall of gallbladder on T2WI, which may be helpful in diagnosing gallbladder MALT-ML.
    Language English
    Publishing date 2024-04-18
    Publishing country England
    Document type Case Reports
    ISSN 2055-7159
    ISSN (online) 2055-7159
    DOI 10.1093/bjrcr/uaae011
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article ; Online: Ferroptosis and its emerging role in tumor.

    Wang, Xiaoxuan / Liu, Zicheng / Ma, Lijuan / Yu, Haijie

    Biophysics reports

    2023  Volume 7, Issue 4, Page(s) 280–294

    Abstract: Ferroptosis is a novel form of programmed cell death characterized by iron-dependent lipid peroxidation accumulation. It is morphologically, biochemically, and genetically distinct from other known cell death, such as apoptosis, necrosis, and pyroptosis. ...

    Abstract Ferroptosis is a novel form of programmed cell death characterized by iron-dependent lipid peroxidation accumulation. It is morphologically, biochemically, and genetically distinct from other known cell death, such as apoptosis, necrosis, and pyroptosis. Its regulatory mechanisms include iron metabolism, fatty acid metabolism, mitochondrial respiration, and antioxidative systems eliminating lipid peroxidation, such as glutathione synthesis, selenium-dependent glutathione peroxidase 4, and ubiquinone. The disruption of cellular redox systems causes damage to the cellular membrane leading to ferroptotic cell death. Recent studies have shown that numerous pathological diseases, like tumors, neurodegenerative disorders, and ischemia-reperfusion injury are associated with ferroptosis. As such, pharmacological regulation of ferroptosis either by activation or by suppression will provide a vast potential for treatments of relevant diseases. This review will discuss the advanced progress in ferroptosis and its regulatory mechanisms from both the antioxidative and oxidative sides. In addition, the roles of ferroptosis in various tumorigenesis, development, and therapeutic strategies will be addressed, particularly to chemotherapy and immunotherapy, as well as the discoveries from Traditional Chinese Medicine. This review will lead us to have a comprehensive understanding of the future exploration of ferroptosis and cancer therapy.
    Language English
    Publishing date 2023-11-01
    Publishing country China
    Document type Journal Article
    ISSN 2364-3420
    ISSN (online) 2364-3420
    DOI 10.52601/bpr.2021.210010
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article ; Online: Effectiveness of a smartphone-enabled dyadic self-care programme (SDSCP) for stroke survivors and caregivers: study protocol for a randomised controlled trial.

    Wang, Wenna / Wang, Xiaoxuan / Vellone, Ercole / Zhang, Zhenxiang

    BMJ open

    2023  Volume 13, Issue 9, Page(s) e073016

    Abstract: Introduction: The promotion of self-care has begun to serve as a central response strategy to the rising burden of stroke. In fact, stroke self-care can be recognised to be a dyad phenomenon having an effect on the health of stroke survivors and their ... ...

    Abstract Introduction: The promotion of self-care has begun to serve as a central response strategy to the rising burden of stroke. In fact, stroke self-care can be recognised to be a dyad phenomenon having an effect on the health of stroke survivors and their caregivers. While studies have confirmed the effectiveness of smartphone-based interventions in improving self-care among stroke survivors, there remains a lack of evidence specifically regarding dyadic self-care interventions for both patients and caregivers.
    Aim: The present single-blinded, two-arm, randomised controlled trial aims to verify the effectiveness of a smartphone-enabled dyadic self-care programme (SDSCP) for stroke survivors and their caregivers.
    Methods and analysis: The estimated sample size is 152 stroke survivor-caregiver dyads. The participants will be randomly classified (1:1) into either a control (N=76) or an experimental group (N=76) through block randomisation. The participants classified into the experimental group will be provided with SDSCP, and during the initial home visit, the research team members will provide instructions to all patients and caregivers on how to download and use the smartphone application. While the participants in the control group will be given the existing stroke standard care. The main outcome measures of stroke survivors will consist of the Self-Care of Stroke Inventory and a short version of the Stroke Specific Quality of Life Scale. The outcome measures of stroke caregivers will primarily cover the Caregiver Contribution to Self-Care of Stroke Inventory and Zarit burden interview. The data of this study will be collected at three time points, including baseline, 1 month and 6 months from the baseline.
    Ethics and dissemination: This study has been approved by the Ethics Committee of Zhengzhou University (ZZUIRB 2021-115) in January 2021. The results achieved in this study will facilitate the clinical practice to improve self-care of stroke survivors and promote dyadic health outcomes for stroke patients and caregivers.
    Trial registration number: The study was registered with the Chinese Clinical Trial Registry and the registration number is ChiCTR2100053591.
    MeSH term(s) Humans ; Smartphone ; Caregivers ; Quality of Life ; Self Care ; Stroke/therapy ; Survivors ; Randomized Controlled Trials as Topic
    Language English
    Publishing date 2023-09-04
    Publishing country England
    Document type Clinical Trial Protocol ; Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2599832-8
    ISSN 2044-6055 ; 2044-6055
    ISSN (online) 2044-6055
    ISSN 2044-6055
    DOI 10.1136/bmjopen-2023-073016
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article ; Online: A Second-Order Projected Primal-Dual Dynamical System for Distributed Optimization and Learning.

    Wang, Xiaoxuan / Yang, Shaofu / Guo, Zhenyuan / Huang, Tingwen

    IEEE transactions on neural networks and learning systems

    2023  Volume 34, Issue 9, Page(s) 6568–6577

    Abstract: This article focuses on developing distributed optimization strategies for a class of machine learning problems over a directed network of computing agents. In these problems, the global objective function is an addition function, which is composed of ... ...

    Abstract This article focuses on developing distributed optimization strategies for a class of machine learning problems over a directed network of computing agents. In these problems, the global objective function is an addition function, which is composed of local objective functions. Such local objective functions are convex and only endowed by the corresponding computing agent. A second-order Nesterov accelerated dynamical system with time-varying damping coefficient is developed to address such problems. To effectively deal with the constraints in the problems, the projected primal-dual method is carried out in the Nesterov accelerated system. By means of the cocoercive maximal monotone operator, it is shown that the trajectories of the Nesterov accelerated dynamical system can reach consensus at the optimal solution, provided that the damping coefficient and gains meet technical conditions. In the end, the validation of the theoretical results is demonstrated by the email classification problem and the logistic regression problem in machine learning.
    Language English
    Publishing date 2023-09-01
    Publishing country United States
    Document type Journal Article
    ISSN 2162-2388
    ISSN (online) 2162-2388
    DOI 10.1109/TNNLS.2021.3127883
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article ; Online: SARS-CoV-2 vaccine breakthrough infection in the older adults: a meta-analysis and systematic review.

    Jing, Xiaohui / Han, Menglin / Wang, Xiaoxuan / Zhou, Li

    BMC infectious diseases

    2023  Volume 23, Issue 1, Page(s) 577

    Abstract: Background: Corona Virus Disease 2019 (COVID-19) mRNA vaccine effectiveness (VE) has recently declined, and reports about COVID-19 breakthrough infection have increased. We aimed to conduct a meta-analysis on population-based studies of the prevalence ... ...

    Abstract Background: Corona Virus Disease 2019 (COVID-19) mRNA vaccine effectiveness (VE) has recently declined, and reports about COVID-19 breakthrough infection have increased. We aimed to conduct a meta-analysis on population-based studies of the prevalence and incidence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) breakthrough infection amongst older adults worldwide.
    Methods: Studies from PubMed, Embase, Cochrane Library, and Web of Science were systematically screened to determine the prevalence and incidence of SARS-CoV-2 breakthrough infection in older adults from inception to November 2, 2022. Our meta-analysis included 30 studies, all published in English. Pooled estimates were calculated using a random-effect model through the inverse variance method. Publication bias was tested through funnel plots and Egger's regression test, and sensitivity analyses were performed to confirm the robustness of the results. This research was performed following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines.
    Results: Thirty publications were included in this meta-analysis (17 on prevalence, 17 on incidence, and 4 on both). The pooled prevalence of COVID-19 breakthrough infection among older adults was 7.7 per 1,000 persons (95% confidence interval [95%CI] 4.0-15.0). At the same time, the pooled incidence was 29.1 per 1000 person-years (95%CI 15.2-55.7).
    Conclusions: This meta-analysis provides estimates of prevalence and incidence in older adults. We concluded that the prevalence and incidence of SARS-CoV-19 breakthrough infection in older people was low. The prevalence and incidence of breakthrough infection admitted to hospital, severe-critical, and deathly was significantly lower. Otherwise, there was considerable heterogeneity among estimates in this study, which should be considered when interpreting the results.
    MeSH term(s) Humans ; Aged ; COVID-19 Vaccines ; COVID-19/epidemiology ; COVID-19/prevention & control ; Breakthrough Infections ; SARS-CoV-2 ; Vaccines
    Chemical Substances COVID-19 Vaccines ; Vaccines
    Language English
    Publishing date 2023-09-04
    Publishing country England
    Document type Meta-Analysis ; Systematic Review ; Journal Article
    ZDB-ID 2041550-3
    ISSN 1471-2334 ; 1471-2334
    ISSN (online) 1471-2334
    ISSN 1471-2334
    DOI 10.1186/s12879-023-08553-w
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article ; Online: Correction: SARS-CoV-2 vaccine breakthrough infection in the older adults: a meta-analysis and systematic review.

    Jing, Xiaohui / Han, Menglin / Wang, Xiaoxuan / Zhou, Li

    BMC infectious diseases

    2023  Volume 23, Issue 1, Page(s) 648

    Language English
    Publishing date 2023-10-02
    Publishing country England
    Document type Published Erratum
    ZDB-ID 2041550-3
    ISSN 1471-2334 ; 1471-2334
    ISSN (online) 1471-2334
    ISSN 1471-2334
    DOI 10.1186/s12879-023-08623-z
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article ; Online: IFN-γ Triggered IFITM2 Expression to Induce Malignant Phenotype in Elderly GBM.

    Liang, Tingyu / Wang, Xiaoxuan / Wang, Yu / Ma, Wenbin

    Journal of molecular neuroscience : MN

    2023  Volume 73, Issue 11-12, Page(s) 946–955

    Abstract: Advanced age is an important risk factor for the worse clinical presentation of gliomas, especially glioblastoma (GBM). The tumor microenvironment (TME) in elderly GBM (eGBM) patients is considerably different from that in young ones, which causes the ... ...

    Abstract Advanced age is an important risk factor for the worse clinical presentation of gliomas, especially glioblastoma (GBM). The tumor microenvironment (TME) in elderly GBM (eGBM) patients is considerably different from that in young ones, which causes the inferior clinical outcome. Based on the data from the Chinese Glioma Genome Atlas RNA sequence (CGGA RNA-seq), the Cancer Genome Atlas RNA array (TCGA RNA-array), and gene set enrichment (GSE) 16011 array sets, the differential genes and function between eGBM (≥ 60 years old) and young GBM (yGBM, 20-60 years old) groups were explored. Immunohistochemistry (IHC) was utilized to depict the abundance of CD8
    MeSH term(s) Humans ; Aged ; Middle Aged ; Young Adult ; Adult ; Glioblastoma/genetics ; Glioblastoma/pathology ; CD8-Positive T-Lymphocytes/metabolism ; CD8-Positive T-Lymphocytes/pathology ; Glioma/metabolism ; Phenotype ; RNA ; Tumor Microenvironment ; Membrane Proteins/genetics
    Chemical Substances RNA (63231-63-0) ; IFITM2 protein, human ; Membrane Proteins
    Language English
    Publishing date 2023-10-27
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1043392-2
    ISSN 1559-1166 ; 0895-8696
    ISSN (online) 1559-1166
    ISSN 0895-8696
    DOI 10.1007/s12031-023-02156-5
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article ; Online: Potential factors associated with resilience among older adults in rural China: a multilevel analysis.

    Qiu, Yun / Cong, Zhen / Wang, Xiaoxuan / Li, Shuzhuo

    BMC geriatrics

    2023  Volume 23, Issue 1, Page(s) 844

    Abstract: Background: Resilience is crucial for older adults who experience adversities, but research on the issue in rural China remains limited. This study aims to examine factors associated with resilience among older adults in rural China, as related to ... ...

    Abstract Background: Resilience is crucial for older adults who experience adversities, but research on the issue in rural China remains limited. This study aims to examine factors associated with resilience among older adults in rural China, as related to different types of resilience, and under different levels of adversity.
    Methods: Data were taken from the eight-wave (2001-2021) Longitudinal Study of Older Adults in Anhui Province, China. We used data from the eighth wave (2021) for the outcome variables and lagged predictors (2018) to avoid reverse causal effects. The study sample included individuals 60 years and above, excluding new participants from 2021, those without any adverse events, and any respondents with incomplete analytic data. Resilience was operationalized as residuals of the regressions of life satisfaction (Life Satisfaction Scale) and depressive symptoms (CES-D) on adversity, referred to as Type-1 and Type-2 resilience respectively. These two types of resilience were then treated as the outcome variables in subsequent multilevel regressions, with the predictors focusing on individual, social, and environmental characteristics and resources. This study adheres to STROBE guidelines.
    Results: 43% of rural older adults exhibited both Type-1 and Type-2 resilience, whereas 18% exhibited only Type-1 resilience and 7% exhibited only Type-2 resilience. Common factors associated with both types of resilience included self-rated health, satisfaction with one's own financial situation, and the prestigiousness of social networks. Predictors for higher levels of Type-1 resilience included higher levels of financial and emotional support and more options for places of leisure. Predictors for higher levels of Type-2 resilience included greater access to medical care. The prestigiousness of social networks, higher levels of emotional support and instrumental support, access to medical care, and more options of places of leisure were positively associated with resilience in the low-adversity group (first tertile of adversity), only satisfaction with financial situation was positively correlated with the resilience of the middle-adversity group (second tertile), while better self-rated health, satisfaction with financial situation, and financial support yielded greater resilience in the high-adversity group (third tertile).
    Conclusions: We examined two types of resilience among older adults in rural China, and found that they have shared and unique associated factors. In addition, the potential factors influencing resilience varied with the level of adversity.
    MeSH term(s) Humans ; Aged ; Resilience, Psychological ; Longitudinal Studies ; Multilevel Analysis ; Social Support ; China/epidemiology ; Rural Population
    Language English
    Publishing date 2023-12-12
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2059865-8
    ISSN 1471-2318 ; 1471-2318
    ISSN (online) 1471-2318
    ISSN 1471-2318
    DOI 10.1186/s12877-023-04575-w
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  9. Article: Managing the Uncertainties Inherent in Prohibitive Voice: How Leadership Interacts With Employee Political Skill.

    Wang, Xiaoxuan / Zhou, Fan

    Frontiers in psychology

    2021  Volume 12, Page(s) 702964

    Abstract: Drawing from the uncertainty management theory, we examine how authoritarian leadership and humble leadership interact with employee political skill to predict prohibitive voice. We conducted a two-wave survey study of 43 managers and 176 subordinates in ...

    Abstract Drawing from the uncertainty management theory, we examine how authoritarian leadership and humble leadership interact with employee political skill to predict prohibitive voice. We conducted a two-wave survey study of 43 managers and 176 subordinates in a power company in China. Our findings indicate that authoritarian leadership has a minimal negative effect on the psychological safety of employees with higher political skill, which in turn leads to a minimal negative effect on their prohibitive voice. Moreover, humble leadership is positively associated with prohibitive voice for employees with lower political skill. For employees with higher political skill, no type of leadership behavior has a significant influence on their prohibitive voice. We outline the implications of these findings for both theoretical and managerial practices.
    Language English
    Publishing date 2021-12-16
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2563826-9
    ISSN 1664-1078
    ISSN 1664-1078
    DOI 10.3389/fpsyg.2021.702964
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article ; Online: Mitochondrial Dysfunction in Periodontitis and Associated Systemic Diseases: Implications for Pathomechanisms and Therapeutic Strategies.

    Deng, Yifei / Xiao, Junhong / Ma, Li / Wang, Chuan / Wang, Xiaoxuan / Huang, Xin / Cao, Zhengguo

    International journal of molecular sciences

    2024  Volume 25, Issue 2

    Abstract: Periodontitis is a chronic infectious disorder damaging periodontal tissues, including the gingiva, periodontal ligament, cementum, and alveolar bone. It arises from the complex interplay between pathogenic oral bacteria and host immune response. ... ...

    Abstract Periodontitis is a chronic infectious disorder damaging periodontal tissues, including the gingiva, periodontal ligament, cementum, and alveolar bone. It arises from the complex interplay between pathogenic oral bacteria and host immune response. Contrary to the previous view of "energy factories", mitochondria have recently been recognized as semi-autonomous organelles that fine-tune cell survival, death, metabolism, and other functions. Under physiological conditions, periodontal tissue cells participate in dynamic processes, including differentiation, mineralization, and regeneration. These fundamental activities depend on properly functioning mitochondria, which play a crucial role through bioenergetics, dynamics, mitophagy, and quality control. However, during the initiation and progression of periodontitis, mitochondrial quality control is compromised due to a range of challenges, such as bacterial-host interactions, inflammation, and oxidative stress. Currently, mounting evidence suggests that mitochondria dysfunction serves as a common pathological mechanism linking periodontitis with systemic conditions like type II diabetes, obesity, and cardiovascular diseases. Therefore, targeting mitochondria to intervene in periodontitis and multiple associated systemic diseases holds great therapeutic potential. This review provides advanced insights into the interplay between mitochondria, periodontitis, and associated systemic diseases. Moreover, we emphasize the significance of diverse therapeutic modulators and signaling pathways that regulate mitochondrial function in periodontal and systemic cells.
    MeSH term(s) Humans ; Diabetes Mellitus, Type 2 ; Periodontitis/complications ; Inflammation ; Periodontium ; Mitochondrial Diseases
    Language English
    Publishing date 2024-01-13
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2019364-6
    ISSN 1422-0067 ; 1422-0067 ; 1661-6596
    ISSN (online) 1422-0067
    ISSN 1422-0067 ; 1661-6596
    DOI 10.3390/ijms25021024
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top