LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 505

Search options

  1. Article ; Online: Comparison of anterior segment optical coherence tomography and ultrasound biomicroscopy in localizing horizontal rectus muscle insertions.

    Duan, Rui / Yang, Jiwen

    European journal of ophthalmology

    2023  , Page(s) 11206721231202539

    Abstract: Purpose: To evaluate the viability and precision of measuring the distance from the limbus to extraocular muscle insertion using anterior segment optical coherence tomography (AS-OCT) and panoramic ultrasound biomicroscopy (UBM) before and after ... ...

    Abstract Purpose: To evaluate the viability and precision of measuring the distance from the limbus to extraocular muscle insertion using anterior segment optical coherence tomography (AS-OCT) and panoramic ultrasound biomicroscopy (UBM) before and after strabismus surgery.
    Methods: We recruited primary strabismus patients and measured the limbus-insertion distance by AS-OCT and UBM preoperatively, 2 weeks, and 1, 3, and 6 months postoperatively. Values were also measured using callipers intraoperatively before and after the planned procedures. Preoperative AS-OCT and UBM values were compared to intraoperative calliper measurements as the gold standard. Postoperative AS-OCT and UBM values were compared to the new postoperative limbus-insertion distance. The limit of agreement deemed clinically acceptable was defined as 1 mm.
    Results: A total of 85 horizontal muscles of 40 patients, including 48 lateral rectus muscles and 37 medial rectus muscles, were analysed. Primary muscles could be successfully detected by AS-OCT (95%) and UBM (100%). At 2 weeks and 1, 3, and 6 months postoperatively, the new rectus muscle attachment site detection rate by AS-OCT was 6%, 32%, 80%, and 89%, respectively, and that by UBM was 24%, 60%, 85%, and 93%, respectively. The Bland-Altman plots revealed better consistency in pairs of AS-OCT, UBM, and calliper measurements of primary muscles than postoperative muscles. For primary muscles, 89% of AS-OCT measurements fell within the permissible range of surgical measurements (1 mm), but this dropped to 67% at 6 months postoperatively (
    Conclusions: AS-OCT and UBM performed well in terms of imaging primary horizontal rectus muscles, but showed decreased accuracy and reproducibility in postoperative muscle measures.
    Language English
    Publishing date 2023-09-18
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1089461-5
    ISSN 1724-6016 ; 1120-6721
    ISSN (online) 1724-6016
    ISSN 1120-6721
    DOI 10.1177/11206721231202539
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article: Establishment and Validation of a Survival Benefit Prediction Model for Non-small Cell Lung Cancer after Immunotherapy.

    Duan, Rui / Li, Hao / Yang, Jie / Xin, Yong

    Alternative therapies in health and medicine

    2024  

    Abstract: Objective: This study aimed to analyze the prognosis of patients with non-small cell lung cancer (NSCLC) after receiving immunotherapy and construct a prediction model to evaluate the overall survival rate of patients.: Methods: This study was a ... ...

    Abstract Objective: This study aimed to analyze the prognosis of patients with non-small cell lung cancer (NSCLC) after receiving immunotherapy and construct a prediction model to evaluate the overall survival rate of patients.
    Methods: This study was a retrospective study that collected data from 493 NSCLC patients who received immunotherapy for the first time. Survival data were analyzed using Cox regression models and the Kaplan-Meier method. The average age of patients was 56 years, and the data collection process included regular outpatient follow-up and observation of overall survival (OS) in the last 36 months.
    Results: Multivariate analysis identified significant risk factors such as smoking history, age, T stage, and M stage on survival and disease progression. The model's performance indicators (C-index and AUC) and calibration curve verified the model's accuracy and predictive ability. In the training set, the AUCs of 3-year and 5-year survival were 0.761 and 0.763, respectively, and in the validation set, they were 0.739 and 0.761.
    Conclusion: This study developed a prediction model for evaluating the survival of NSCLC patients after immunotherapy that integrates multiple influencing factors. This predictive model can be used as a tool to assess individual risks in NSCLC patients after immunotherapy, helping clinicians to develop more precise treatment and follow-up plans, potentially improving patient outcomes.
    Language English
    Publishing date 2024-02-09
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1225073-9
    ISSN 1078-6791
    ISSN 1078-6791
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article: Causal relationship between the immune phenotype of monocytes and myasthenia gravis: A Mendelian randomization study.

    Dong, Jing / Duan, Rui-Sheng / Zhang, Peng

    Heliyon

    2024  Volume 10, Issue 5, Page(s) e26741

    Abstract: Background: Monocytes play an essential role in developing autoimmune diseases; however, their association with myasthenia gravis (MG) development is unclear.: Methods: We performed a two-sample Mendelian randomization analysis to assess the causal ... ...

    Abstract Background: Monocytes play an essential role in developing autoimmune diseases; however, their association with myasthenia gravis (MG) development is unclear.
    Methods: We performed a two-sample Mendelian randomization analysis to assess the causal relationship between monocyte-associated traits and MG, reviewing summary statistics of genome-wide association studies (GWAS).
    Results: Using the inverse variance weighted method, the following were found to be causally associated with MG: HLA-DR on monocytes (OR, 1.363; 95% CI, 1.158-1.605;
    Conclusions: The present study suggests a causal relationship between the upregulation of CD40, HLA-DR, and CD64 on monocytes and the development of MG. Altered monocyte function may potentially be a risk factor for MG and a therapeutic target.
    Language English
    Publishing date 2024-02-20
    Publishing country England
    Document type Journal Article
    ZDB-ID 2835763-2
    ISSN 2405-8440
    ISSN 2405-8440
    DOI 10.1016/j.heliyon.2024.e26741
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article ; Online: Rapid and Simple Approaches for Diagnosis of

    Duan, Rui / Wang, Pei

    Polish journal of microbiology

    2022  Volume 71, Issue 4, Page(s) 481–489

    Abstract: Staphylococcus ... ...

    Abstract Staphylococcus aureus
    MeSH term(s) Humans ; Staphylococcus aureus ; Methicillin-Resistant Staphylococcus aureus ; Sensitivity and Specificity ; Sepsis ; Staphylococcal Infections ; Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization ; Bacteremia/diagnosis
    Language English
    Publishing date 2022-12-09
    Publishing country Poland
    Document type Review ; Journal Article
    ZDB-ID 2234080-4
    ISSN 2544-4646 ; 1733-1331
    ISSN (online) 2544-4646
    ISSN 1733-1331
    DOI 10.33073/pjm-2022-050
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article ; Online: Astrocyte-mediated Oligodendrocyte Precursor Cells Detachment from Vessels.

    Wu, Chongyun / Duan, Rui / Yang, Luodan

    Cell biochemistry and biophysics

    2023  Volume 81, Issue 3, Page(s) 379–381

    MeSH term(s) Astrocytes ; Oligodendrocyte Precursor Cells ; Cell Differentiation ; Oligodendroglia
    Language English
    Publishing date 2023-08-04
    Publishing country United States
    Document type Letter
    ZDB-ID 1357904-6
    ISSN 1559-0283 ; 1085-9195
    ISSN (online) 1559-0283
    ISSN 1085-9195
    DOI 10.1007/s12013-023-01155-y
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article ; Online: Chlorination of trichlorosilane/chlorodimethylsilane using metal chlorides: experimental and mechanistic investigations.

    Duan, Rui / Peng, Wencai / Zhang, Jianshu / Zhang, Jinli

    RSC advances

    2023  Volume 13, Issue 12, Page(s) 7877–7885

    Abstract: Removal of carbonaceous impurities from trichlorosilane ( ... ...

    Abstract Removal of carbonaceous impurities from trichlorosilane (SiHCl
    Language English
    Publishing date 2023-03-09
    Publishing country England
    Document type Journal Article
    ISSN 2046-2069
    ISSN (online) 2046-2069
    DOI 10.1039/d3ra00772c
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article ; Online: Template-guided method for protein-ligand complex structure prediction: Application to CASP15 protein-ligand studies.

    Xu, Xianjin / Duan, Rui / Zou, Xiaoqin

    Proteins

    2023  Volume 91, Issue 12, Page(s) 1829–1836

    Abstract: Critical Assessment of Structure Prediction 15 (CASP15) added a new category of ligand prediction to promote the development of protein/RNA-ligand modeling methods, which have become important tools in modern drug discovery. A total of 22 targets were ... ...

    Abstract Critical Assessment of Structure Prediction 15 (CASP15) added a new category of ligand prediction to promote the development of protein/RNA-ligand modeling methods, which have become important tools in modern drug discovery. A total of 22 targets were released, including 18 protein-ligand targets and 4 RNA-ligand targets. We applied our recently developed template-guided method to the protein-ligand complex structure predictions. The method combined a physicochemical, molecular docking method, and a bioinformatics-based ligand similarity method. The Protein Data Bank was scanned for template structures containing the target protein, homologous proteins, or proteins sharing a similar fold with the target protein. The binding modes of the co-bound ligands in the template structures were used to guide the complex structure prediction for the target. The CASP assessment results show that the overall performance of our method was ranked second when the top predicted model was considered for each target. Here, we analyzed our predictions in detail, and discussed the challenges including protein conformational changes, large and flexible ligands, and multiple diverse ligands in a binding pocket.
    MeSH term(s) Binding Sites ; Molecular Docking Simulation ; Ligands ; Protein Binding ; Proteins/chemistry ; RNA/metabolism ; Protein Conformation
    Chemical Substances Ligands ; Proteins ; RNA (63231-63-0)
    Language English
    Publishing date 2023-06-07
    Publishing country United States
    Document type Journal Article
    ZDB-ID 806683-8
    ISSN 1097-0134 ; 0887-3585
    ISSN (online) 1097-0134
    ISSN 0887-3585
    DOI 10.1002/prot.26535
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article ; Online: Understanding the avidin-biotin binding based on polarized protein-specific charge.

    Zhang, Dawei / Duan, Rui

    Physical chemistry chemical physics : PCCP

    2021  Volume 23, Issue 38, Page(s) 21951–21958

    Abstract: In this study, charge updating schemes based on the local polarized protein-specific charge (LPPC) were introduced to vary the atomic charges of the biotin molecule and the residues in close contact during the simulation of the avidin-biotin complexes. ... ...

    Abstract In this study, charge updating schemes based on the local polarized protein-specific charge (LPPC) were introduced to vary the atomic charges of the biotin molecule and the residues in close contact during the simulation of the avidin-biotin complexes. The need of the charge variation of the ligand in response to changes in its surroundings was thoroughly studied. The results show that the calculated binding energy difference between biotin (BTN1) and 2'-iminobiotin (BTN2) and avidin is in excellent agreement with the experimental value, thus verifying the feasibility of updating the atomic charges of ligands during the simulation.
    MeSH term(s) Avidin/chemistry ; Binding Sites ; Biotin/chemistry ; Density Functional Theory ; Molecular Conformation ; Molecular Dynamics Simulation
    Chemical Substances Avidin (1405-69-2) ; Biotin (6SO6U10H04)
    Language English
    Publishing date 2021-10-06
    Publishing country England
    Document type Journal Article
    ZDB-ID 1476244-4
    ISSN 1463-9084 ; 1463-9076
    ISSN (online) 1463-9084
    ISSN 1463-9076
    DOI 10.1039/d1cp02752b
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  9. Article ; Online: An Examination of the Effect of Aspirin and Salicylic Acid on Soluble Fms-like Tyrosine Kinase-1 Release from Human Placental Trophoblasts.

    Zhao, Jiawu / Duan, Rui / Sun, Jinghui / Chow, Rebecca P / Lyons, Timothy J / Yu, Jeremy Y

    Cells

    2024  Volume 13, Issue 2

    Abstract: Low-dose aspirin (LDA) is efficacious in preventing preeclampsia, but its mechanism of action is unclear. Conflicting evidence suggests that it may inhibit placental trophoblast release of soluble fms-like tyrosine kinase-1 (sFlt1), a key mediator of ... ...

    Abstract Low-dose aspirin (LDA) is efficacious in preventing preeclampsia, but its mechanism of action is unclear. Conflicting evidence suggests that it may inhibit placental trophoblast release of soluble fms-like tyrosine kinase-1 (sFlt1), a key mediator of preeclampsia. We examined whether, and at what concentrations, aspirin and its principal metabolite, salicylic acid, modulate sFlt1 release and/or expression in trophoblasts. Human trophoblast lines BeWo and HTR-8/SVneo were cultured; BeWo cells were also treated with 1% oxygen vs. normoxia to mimic hypoxia in preeclamptic placentas. Cells were treated with aspirin or salicylic acid vs. vehicle for 24 h at concentrations relevant to LDA and at higher concentrations. Protein concentrations (ELISA) and mRNA expression (RT-PCR) of sFlt1 were determined. Under normoxia, LDA-relevant concentrations of aspirin (10-50 µmol/L) or salicylic acid (20-100 µmol/L) had no significant effect on sFlt1 protein release or mRNA expression in BeWo cells. However, inhibition was observed at higher concentrations (1 mmol/L for aspirin and ≥200 μmol/L for salicylic acid). Hypoxia enhanced sFlt1 protein release and mRNA expression in BeWo cells, but these responses were not significantly affected by either aspirin or salicylic acid at LDA concentrations. Similarly, neither drug altered sFlt1 protein secretion or mRNA expression in normoxic HTR-8/SVneo cells at LDA concentrations. We suggest that direct modulation of trophoblast release or expression of sFlt1 is unlikely to be a mechanism underlying the clinical efficacy of LDA in preeclampsia.
    MeSH term(s) Female ; Humans ; Pregnancy ; Aspirin/pharmacology ; Hypoxia ; Placenta ; Pre-Eclampsia/drug therapy ; Receptor Protein-Tyrosine Kinases ; RNA, Messenger/genetics ; Salicylic Acid/pharmacology ; Trophoblasts/drug effects ; Trophoblasts/metabolism ; Vascular Endothelial Growth Factor Receptor-1/drug effects
    Chemical Substances Aspirin (R16CO5Y76E) ; FLT1 protein, human (EC 2.7.10.1) ; Receptor Protein-Tyrosine Kinases (EC 2.7.10.1) ; RNA, Messenger ; Salicylic Acid (O414PZ4LPZ) ; Vascular Endothelial Growth Factor Receptor-1 (EC 2.7.10.1)
    Language English
    Publishing date 2024-01-06
    Publishing country Switzerland
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 2661518-6
    ISSN 2073-4409 ; 2073-4409
    ISSN (online) 2073-4409
    ISSN 2073-4409
    DOI 10.3390/cells13020113
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article ; Online: Methylene Blue Pretreatment Protects Against Repeated Neonatal Isoflurane Exposure-Induced Brain Injury and Memory Loss.

    Wu, Chongyun / Deng, Qianting / Zhu, Ling / Liu, Timon Cheng-Yi / Duan, Rui / Yang, Luodan

    Molecular neurobiology

    2024  

    Abstract: Perioperative neurocognitive impairment (PND) is a common medical complication in the postoperative period. General anesthesia through volatile anesthetics poses a high risk of POCD. Moreover, the developing brain is especially vulnerable to anesthesia- ... ...

    Abstract Perioperative neurocognitive impairment (PND) is a common medical complication in the postoperative period. General anesthesia through volatile anesthetics poses a high risk of POCD. Moreover, the developing brain is especially vulnerable to anesthesia-induced neurotoxicity. Therefore, finding a practical approach to prevent or alleviate neonatal isoflurane (ISO) exposure-induced brain injury and cognitive decline is essential for reducing medical complications following major surgery during the early postnatal period. Using a repeated neonatal ISO exposure-induced PND rat model, we investigated the effects of methylene blue (MB) pretreatment on repeated neonatal isoflurane exposure-induced brain injury and memory loss. Intraperitoneal injection of low-dose MB (1 mg/kg) was conducted three times 24 h before each ISO exposure. The Barnes maze and novel objection test were conducted to assess learning and memory. Immunofluorescence staining, F-Jade C staining, TUNEL staining, and Western blot analysis were performed to determine mitochondrial fragmentation, neuronal injury, degeneration, and apoptosis. Evans blue extravasation assay, total antioxidant capacity assay, MDA assay kit, and related inflammatory assay kits were used to test blood-brain barrier (BBB) disruption, antioxidant capacity, and neuroinflammation. Behavioral tests revealed that MB pretreatment significantly ameliorated ISO exposure-induced cognitive deficits. In addition, MB pretreatment alleviates neuronal injury, apoptosis, and degeneration. Furthermore, the BBB integrity was preserved by MB pretreatment. Additional studies revealed that ISO-induced excessive mitochondrial fragmentation, oxidative stress, and neuroinflammation were significantly attenuated by MB pretreatment in the PND rat model. Our findings suggest that MB pretreatment alleviates ISO exposure-induced brain injury and memory loss for the first time, supporting MB pretreatment as a promising approach to protect the brain against neonatal ISO exposure-induced postoperative cognitive dysfunction.
    Language English
    Publishing date 2024-01-17
    Publishing country United States
    Document type Journal Article
    ZDB-ID 645020-9
    ISSN 1559-1182 ; 0893-7648
    ISSN (online) 1559-1182
    ISSN 0893-7648
    DOI 10.1007/s12035-024-03931-0
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top