LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 38

Search options

  1. Article ; Online: Robust Low-Friction and Low-Wear TiNbMoTaCr High-Entropy Film Enabled by Periodically Inserting Curved MoS

    Li, Xinru / Zhang, Yu / He, Xingjia / Zhang, Kan / Qi, Jinlei / Wang, Longpeng / Wen, Mao

    ACS applied materials & interfaces

    2024  Volume 16, Issue 13, Page(s) 16936–16949

    Abstract: The well-known integration of physical, chemical, and mechanical properties enables high-entropy alloys (HEAs) to be applied in various fields; however, refractory HEAs are brittle and susceptible to abrasive wear at high coefficients of friction (COF), ... ...

    Abstract The well-known integration of physical, chemical, and mechanical properties enables high-entropy alloys (HEAs) to be applied in various fields; however, refractory HEAs are brittle and susceptible to abrasive wear at high coefficients of friction (COF), resulting in insufficient mechanical durability against abrasion. Herein, curved MoS
    Language English
    Publishing date 2024-03-20
    Publishing country United States
    Document type Journal Article
    ISSN 1944-8252
    ISSN (online) 1944-8252
    DOI 10.1021/acsami.3c18085
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article: Establishment and validation of a nomogram predicting the risk of deep vein thrombosis before total knee arthroplasty.

    Wang, Zehua / Mao, Xingjia / Guo, Zijian / Che, Guoyu / Xiang, Changxin / Xiang, Chuan

    Thrombosis journal

    2024  Volume 22, Issue 1, Page(s) 21

    Abstract: Purpose: This study aimed to analyze the independent risk factors contributing to preoperative DVT in TKA and constructed a predictive nomogram to accurately evaluate its occurrence based on these factors.: Methods: The study encompassed 496 patients ...

    Abstract Purpose: This study aimed to analyze the independent risk factors contributing to preoperative DVT in TKA and constructed a predictive nomogram to accurately evaluate its occurrence based on these factors.
    Methods: The study encompassed 496 patients who underwent total knee arthroplasty at our hospital between June 2022 and June 2023. The dataset was randomly divided into a training set (n = 348) and a validation set (n = 148) in a 7:3 ratio. The least absolute shrinkage and selection operator (LASSO) and multivariate logistic regression analysis were used to screen the predictors of preoperative DVT occurrence in TKA and construct a nomogram. The performance of the predictive models was evaluated using the concordance index (C-index), calibration curves, and the receiver operating characteristic (ROC) curves. Decision curve analysis was used to analyze the clinical applicability of nomogram.
    Results: A total of 496 patients who underwent TKA were included in this study, of which 28 patients were examined for lower extremity DVT preoperatively. Platelet crit, Platelet distribution width, Procalcitonin, prothrombin time, and D-dimer were predictors of preoperative occurrence of lower extremity DVT in the nomograms of the TKA patients. In addition, the areas under the curve of the ROC of the training and validation sets were 0.935 (95%CI: 0.880-0.990) and 0.854 (95%CI: 0.697-1.000), and the C-indices of the two sets were 0.919 (95%CI: 0.860-0.978) and 0.900 (95%CI: 0.791-1.009). The nomogram demonstrated precise risk prediction of preoperative DVT occurrence in TKA as confirmed by the calibration curve and decision curve analysis.
    Conclusions: This Nomogram demonstrates great differentiation, calibration and clinical validity. By assessing individual risk, clinicians can promptly detect the onset of DVT, facilitating additional life monitoring and necessary medical interventions to prevent the progression of DVT effectively.
    Language English
    Publishing date 2024-02-16
    Publishing country England
    Document type Journal Article
    ZDB-ID 2118392-2
    ISSN 1477-9560
    ISSN 1477-9560
    DOI 10.1186/s12959-024-00588-6
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article ; Online: Comparison of Tibial Tubercle Landmark Technique and Range of Motion Technique in Primary Total Knee Arthroplasty: A Retrospective Cohort Study.

    Xin, Liu / Xingjia, Mao / Shengjie, Guo / Yanwei, Cao / Shuaijie, Li / Chuan, Xiang

    Orthopaedic surgery

    2022  Volume 14, Issue 12, Page(s) 3159–3170

    Abstract: Objective: There is not a standard for rotational alignment of the tibial component in total knee arthroplasty (TKA). For now, the most commonly methods are tibial-tubercle -landmark technique (TTL) and range-of-motion technique (ROM). The study is ... ...

    Abstract Objective: There is not a standard for rotational alignment of the tibial component in total knee arthroplasty (TKA). For now, the most commonly methods are tibial-tubercle -landmark technique (TTL) and range-of-motion technique (ROM). The study is aimed to compare clinical outcomes and radiographic data of patients who undergone primary TKA with TTL or ROM technique.
    Methods: This single-surgeon retrospective cohort study includes 60 patients with TTL technique and 60 with ROM technique from December 2017 to January 2019. All patients were evaluated clinically using Hospital for Special Surgery Knee Score (HSS), Feller patellar score, visual analogue scale (VAS) and maximum knee flexion and extension angle before and after surgery at both 6 months and 12 months postoperatively. Radiographic data contain hip-knee-ankle angle (HKA), mechanical lateral distal femoral angle (mLDFA), mechanical medial proximal tibial angle (mMPTA), posterior slope angle (PSA) on pre and postoperative X-ray and rotation angle of femoral component (relative to surgical trans-epicondylar axis) and tibial component (relative to surgical trans-epicondylar axis, tibial posterior condylar line and Akagi') on postoperative computed tomography (CT) scan. Clinical outcomes and radiological data were compared between the two groups.
    Results: One hundred twenty patients (120 knees) were enrolled in this study, including 38 males and 82 females, aged from 58 to 78, with an average of 65.7 years. There was no significant difference in demographics and preoperative X-ray data between the two groups (P > 0. 05). Clinical scores of the TTL group were better than those in the ROM group at 6 and 12 months after surgery, when comparing HSS (83.57 ± 5.00 vs 75.90 ± 4.89, F = 59.004, P < 0.001; 90.53 ± 4.31 vs 82.83 ± 4.98, F = 54.509, P < 0.001), Feller patellar score (21.43 ± 2.54 vs 19.10 ± 2.52, F = 14.864, P = 0.001; 26.27 ± 1.98 vs 23.20 ± 2.31, F = 42.204, P < 0.001) and VAS (3.70 ± 0.62 vs 4.38 ± 0.92, F = 14.508, P = 0.001; 2.10 ± 0.90 vs 2.79 ± 0.80, F = 11.554, P = 0.002). But there was no significant difference in the flexion and extension angle between the two groups. In imaging evaluation, no statistical difference was found in pre- and postoperative HKA, mLDFA, mMPTA and PSA. Rotational angles of tibial component only did relative to Akagi' have statistical difference in two groups (2.33 ± 4.3 vs 4.41 ± 3.2, t = 2.143, P < 0.05) (Positive value represented external rotation).
    Conclusion: The results of our study showed that both methods were reliable, and TTL technique provided better clinical scores and larger external angle of tibial component, compared to ROM technique.
    MeSH term(s) Humans ; Arthroplasty, Replacement, Knee ; Retrospective Studies
    Language English
    Publishing date 2022-10-13
    Publishing country Australia
    Document type Journal Article
    ZDB-ID 2503162-4
    ISSN 1757-7861 ; 1757-7853 ; 1757-7861
    ISSN (online) 1757-7861 ; 1757-7853
    ISSN 1757-7861
    DOI 10.1111/os.13486
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article ; Online: Comparison of Walking Quality Variables between End-Stage Osteonecrosis of Femoral Head Patients and Healthy Subjects by a Footscan Plantar Pressure System.

    Wang, Zehua / Mao, Xingjia / Guo, Zijian / Zhao, Ruipeng / Feng, Tengda / Xiang, Chuan

    Medicina (Kaunas, Lithuania)

    2022  Volume 59, Issue 1

    Abstract: Background and ... ...

    Abstract Background and Objectives
    MeSH term(s) Humans ; Healthy Volunteers ; Femur Head ; Pressure ; Walking ; Femur Head Necrosis ; Biomechanical Phenomena
    Language English
    Publishing date 2022-12-28
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2188113-3
    ISSN 1648-9144 ; 1010-660X
    ISSN (online) 1648-9144
    ISSN 1010-660X
    DOI 10.3390/medicina59010059
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article ; Online: Bamboo-like dual-phase nanostructured copper composite strengthened by amorphous boron framework

    Hang Lv / Xinxin Gao / Kan Zhang / Mao Wen / Xingjia He / Zhongzhen Wu / Chang Liu / Changfeng Chen / Weitao Zheng

    Nature Communications, Vol 14, Iss 1, Pp 1-

    2023  Volume 12

    Abstract: Abstract Grain boundary engineering is a versatile tool for strengthening materials by tuning the composition and bonding structure at the interface of neighboring crystallites, and this method holds special significance for materials composed of small ... ...

    Abstract Abstract Grain boundary engineering is a versatile tool for strengthening materials by tuning the composition and bonding structure at the interface of neighboring crystallites, and this method holds special significance for materials composed of small nanograins where the ultimate strength is dominated by grain boundary instead of dislocation motion. Here, we report a large strengthening of a nanocolumnar copper film that comprises columnar nanograins embedded in a bamboo-like boron framework synthesized by magnetron sputtering co-deposition, reaching the high nanoindentation hardness of 10.8 GPa among copper alloys. The boron framework surrounding copper nanograins stabilizes and strengthens the nanocolumnar copper film under indentation, benefiting from the high strength of the amorphous boron framework and the constrained deformation of copper nanocolumns confined by the boron grain boundary. These findings open a new avenue for strengthening metals via construction of dual-phase nanocomposites comprising metal nanograins embedded in a strong and confining light-element grain boundary framework.
    Keywords Science ; Q
    Subject code 669
    Language English
    Publishing date 2023-08-01T00:00:00Z
    Publisher Nature Portfolio
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  6. Article ; Online: Bamboo-like dual-phase nanostructured copper composite strengthened by amorphous boron framework.

    Lv, Hang / Gao, Xinxin / Zhang, Kan / Wen, Mao / He, Xingjia / Wu, Zhongzhen / Liu, Chang / Chen, Changfeng / Zheng, Weitao

    Nature communications

    2023  Volume 14, Issue 1, Page(s) 4836

    Abstract: Grain boundary engineering is a versatile tool for strengthening materials by tuning the composition and bonding structure at the interface of neighboring crystallites, and this method holds special significance for materials composed of small nanograins ...

    Abstract Grain boundary engineering is a versatile tool for strengthening materials by tuning the composition and bonding structure at the interface of neighboring crystallites, and this method holds special significance for materials composed of small nanograins where the ultimate strength is dominated by grain boundary instead of dislocation motion. Here, we report a large strengthening of a nanocolumnar copper film that comprises columnar nanograins embedded in a bamboo-like boron framework synthesized by magnetron sputtering co-deposition, reaching the high nanoindentation hardness of 10.8 GPa among copper alloys. The boron framework surrounding copper nanograins stabilizes and strengthens the nanocolumnar copper film under indentation, benefiting from the high strength of the amorphous boron framework and the constrained deformation of copper nanocolumns confined by the boron grain boundary. These findings open a new avenue for strengthening metals via construction of dual-phase nanocomposites comprising metal nanograins embedded in a strong and confining light-element grain boundary framework.
    Language English
    Publishing date 2023-08-10
    Publishing country England
    Document type Journal Article
    ZDB-ID 2553671-0
    ISSN 2041-1723 ; 2041-1723
    ISSN (online) 2041-1723
    ISSN 2041-1723
    DOI 10.1038/s41467-023-40580-8
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article: Mitochondria: Potential Targets for Osteoarthritis.

    Mao, Xingjia / Fu, Panfeng / Wang, Linlin / Xiang, Chuan

    Frontiers in medicine

    2020  Volume 7, Page(s) 581402

    Abstract: Osteoarthritis (OA) is a common and disabling joint disorder that is mainly characterized by cartilage degeneration and narrow joint spaces. The role of mitochondrial dysfunction in promoting the development of OA has gained much attention. Targeting ... ...

    Abstract Osteoarthritis (OA) is a common and disabling joint disorder that is mainly characterized by cartilage degeneration and narrow joint spaces. The role of mitochondrial dysfunction in promoting the development of OA has gained much attention. Targeting endogenous molecules to improve mitochondrial function is a potential treatment for OA. Moreover, research on exogenous drugs to improve mitochondrial function in OA based on endogenous molecular targets has been accomplished. In addition, stem cells and exosomes have been deeply researched in the context of cartilage regeneration, and these factors both reverse mitochondrial dysfunctions. Thus, we hypothesize that biomedical approaches will be applied to the treatment of OA. Furthermore, we have summarized the global status of mitochondria and osteoarthritis research in the past two decades, which will contribute to the research field and the development of novel treatment strategies for OA.
    Language English
    Publishing date 2020-11-26
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2775999-4
    ISSN 2296-858X
    ISSN 2296-858X
    DOI 10.3389/fmed.2020.581402
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article ; Online: Mitochondria

    Xingjia Mao / Panfeng Fu / Linlin Wang / Chuan Xiang

    Frontiers in Medicine, Vol

    Potential Targets for Osteoarthritis

    2020  Volume 7

    Abstract: Osteoarthritis (OA) is a common and disabling joint disorder that is mainly characterized by cartilage degeneration and narrow joint spaces. The role of mitochondrial dysfunction in promoting the development of OA has gained much attention. Targeting ... ...

    Abstract Osteoarthritis (OA) is a common and disabling joint disorder that is mainly characterized by cartilage degeneration and narrow joint spaces. The role of mitochondrial dysfunction in promoting the development of OA has gained much attention. Targeting endogenous molecules to improve mitochondrial function is a potential treatment for OA. Moreover, research on exogenous drugs to improve mitochondrial function in OA based on endogenous molecular targets has been accomplished. In addition, stem cells and exosomes have been deeply researched in the context of cartilage regeneration, and these factors both reverse mitochondrial dysfunctions. Thus, we hypothesize that biomedical approaches will be applied to the treatment of OA. Furthermore, we have summarized the global status of mitochondria and osteoarthritis research in the past two decades, which will contribute to the research field and the development of novel treatment strategies for OA.
    Keywords osteoarthritis ; mitochondria ; mitochondrial dynamics mtDNA ; biomedical therapy ; bibliometrics ; Medicine (General) ; R5-920
    Language English
    Publishing date 2020-11-01T00:00:00Z
    Publisher Frontiers Media S.A.
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  9. Article ; Online: Pt-induced atomic-level tailoring towards paracrystalline high-entropy alloy

    Xingjia He / Yu Zhang / Xinlei Gu / Jiangwei Wang / Jinlei Qi / Jun Hao / Longpeng Wang / Hao Huang / Mao Wen / Kan Zhang / Weitao Zheng

    Nature Communications, Vol 14, Iss 1, Pp 1-

    2023  Volume 13

    Abstract: Paracrystalline state is still challenging to reach in alloy systems in a controlled manner. Here, the authors present an atomic-level tailoring route to create paracrystalline Zr-Nb-Hf-Ta-Mo high-entropy alloy through local amorphization induced by ... ...

    Abstract Paracrystalline state is still challenging to reach in alloy systems in a controlled manner. Here, the authors present an atomic-level tailoring route to create paracrystalline Zr-Nb-Hf-Ta-Mo high-entropy alloy through local amorphization induced by atomic-level Pt with negative mixing enthalpy.
    Keywords Science ; Q
    Language English
    Publishing date 2023-02-01T00:00:00Z
    Publisher Nature Portfolio
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  10. Article: Biological roles and therapeutic potential of circular RNAs in osteoarthritis.

    Mao, Xingjia / Cao, Yanyan / Guo, Zijian / Wang, Linlin / Xiang, Chuan

    Molecular therapy. Nucleic acids

    2021  Volume 24, Page(s) 856–867

    Abstract: Osteoarthritis (OA) is a common and disabling joint disorder that is mainly characterized by cartilage degeneration and narrow joint spaces. The regulatory functions of non-coding RNAs (long non-coding RNAs, microRNAs [miRNAs], and circular RNAs [ ... ...

    Abstract Osteoarthritis (OA) is a common and disabling joint disorder that is mainly characterized by cartilage degeneration and narrow joint spaces. The regulatory functions of non-coding RNAs (long non-coding RNAs, microRNAs [miRNAs], and circular RNAs [circRNAs]) in OA progression have attracted considerable attention, and the function of circular RNAs in the context of OA has been an increasingly popular research topic in the last 6 years. Recent studies have reported that various circRNAs can delay or aggravate diverse aspects of the OA process, including extracellular matrix formation, apoptosis, proliferation, inflammation, and autophagy, via circRNA/miRNA/mRNA pathways. Thus, circRNAs and related pathways are potential therapeutic targets for OA. Our review provides comprehensive information about circRNAs, including their biogenesis, functions, and characteristics, and it reveals their critical roles in the pathogenesis of OA via a large regulatory network of sponges. Considering their regulatory functions and characteristics, we hypothesize that circRNAs not only can be transferred through bodily fluids to serve as diagnostic biomarkers, but they can also be released from mesenchymal stem cell-derived exosomes and delivered to OA chondrocytes acting as therapeutic circRNAs. Further investigations of the in-depth molecular mechanisms of action of circRNAs in OA are expected to provide effective and safe OA treatment strategies.
    Language English
    Publishing date 2021-05-08
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 2662631-7
    ISSN 2162-2531
    ISSN 2162-2531
    DOI 10.1016/j.omtn.2021.04.006
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top