Search

Copyright of Systems Engineering & Electronics is the property of Journal of Systems Engineering & Electronics Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Uranium Mining & Metallurgy is the property of Uranium Mining & Metallurgy Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Rolling Stock (1002-7602) is the property of Rolling Stock Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

BACKGROUND: Confirming the reliability and validity of the My jump 2 application for measuring lower limb vertical stiffness may offer the possibility of it as an alternative to the Kistler three-dimensional force platform for measuring lower limb stiffness. OBJECTIVE: To verify the reliability and validity of the My Jump 2 application in measuring lower limb vertical stiffness of college students. METHODS: The drop jump data of the participants were collected through the Kistler three-dimensional force platform and the My Jump 2 application, and the vertical stiffness of the participants’ lower limb vertical stiffness was calculated. The intraclass correlation coefficient was used to analyze the data measured by the My Jump 2 application and the Kistler three-dimensional force platform, attempting to verify the reliability of the My Jump 2 application. The bias and average between the two devices were drawn into a Bland-Altman diagram to verify the consistency between the two test methods. Finally, the test-retest reliability of the My Jump 2 applications at 30 cm and 40 cm was analyzed using the Cronbach’s alpha (α) and coefficient of variation. Pearson product-moment correlation was used to analyze the correlation of My Jump 2 applications. RESULTS AND CONCLUSION: My Jump 2 application has high reliability and validity when measuring the vertical stiffness of the lower limb. At the same time, due to its advantages of low cost, convenient portability and field testing for large samples, it can be used as an alternative to the Kistler three-dimensional force platform to test the vertical stiffness of the lower limb in college students and similar populations. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Anhui Agricultural Sciences is the property of Journal of Anhui Agricultural Sciences Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Science Technology & Engineering is the property of Chinese Society of Technology Economics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Uranium Mining & Metallurgy is the property of Uranium Mining & Metallurgy Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Rolling Stock (1002-7602) is the property of Rolling Stock Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

BACKGROUND: Mesenchymal stem cells have the functions of inhibiting inflammation and cell apoptosis, promoting tissue repair, angiogenesis, and immune regulation in ischemic heart disease. OBJECTIVE: To review the latest research progress of mesenchymal stem cells in myocardial ischemia-reperfusion injury to provide ideas and basis for their further research and clinical application. METHODS: PubMed, Wanfang, and CNKI databases were searched for relevant literature. The key words were “mesenchymal stem cell, MSCs, myocardial ischemia-reperfusion injury, MIRI, exosomes, inflammation, tissue repair, vascular regeneration” in Chinese and English, separately. Finally, 48 articles were included and further summarized. RESULTS AND CONCLUSION: Myocardial ischemia-reperfusion injury is a common pathophysiological process in clinical heart diseases. It is common in ischemic cardiomyopathy, cardiopulmonary bypass and heart transplantation. Its mechanisms include free radical damage, calcium ion overload, energy metabolism disorders, and inflammation and so on. In recent years, the treatment of mesenchymal stem cell transplantation has attracted attention. Its exosomal function, myocardial tissue repair, reduction of myocardial cell apoptosis and inhibition of inflammation provide a new idea for treatment of myocardial ischemiareperfusion injury. Adult mesenchymal stem cells are currently the first choice for the treatment of myocardial ischemia-reperfusion injury. Therefore, a better understanding of the mechanism of mesenchymal stem cells in myocardial ischemia-reperfusion injury and the latest research progress are extremely important for their in-depth research and clinical application. [ABSTRACT FROM AUTHOR]

BACKGROUND: Heart transplantation is an important treatment for end-stage heart disease. The use of immunosuppressive drugs is indispensable for the maintenance of transplantation. Given the enormous side effects of immunosuppressive drugs, it may even have a significant impact on the quality of life of patients. People began to explore new ways to induce transplantation tolerance to avoid the use of immunosuppressive drugs. The immunomodulation characteristics of mesenchymal stem cells have attracted the attention of researchers and a large number of related researches have been carried out.OBJECTIVE: To summarize and investigate the characteristics of immune regulation of mesenchymal stem cells and immune tolerance induction in heart transplantation and their relationship. METHODS: We searched relevant literature in PubMed database. Key words were “stem cell; mesenchymal stem cells; MSC; MSCs; heart transplantation; cardiac allograft; heart allograft; immune tolerance; tolerance; immunological rejection”. The repetitive studies were excluded after screening, and the related literature was arranged and summarized. RESULTS AND CONCLUSION: On one hand, mesenchymal stem cells have different effects on a variety of immune cells. On the other hand, mesenchymal stem cells regulate or directly produce a large number of biological active factors so as to constitute a complex network, creating a microenvironment conducive to immune regulation. The application of mesenchymal stem cells in heart transplantation is limited to animal experiments, and the results are relatively optimistic. Researchers’ exploration of induction of immune tolerance in heart transplantation will help people to understand the field further and provide more inspiration to relevant clinicians. [ABSTRACT FROM AUTHOR]

Copyright of Chinese Journal of Liquid Crystal & Displays is the property of Chinese Journal of Liquid Crystal & Displays and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Henan Agricultural Sciences is the property of Editorial Board of Journal of Henan Agricultural Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Oil Crop Sciences is the property of Oil Crops Research Institute of Chinese Academy of Agricultural Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Beijing University of Traditional Chinese Medicine is the property of Journal of Beijing University of Traditional Chinese Medicine and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)