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  • Hindawi Limited  (2)
  • Li, Zhiwei  (2)
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  • Hindawi Limited  (2)
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  • 1
    Online Resource
    Online Resource
    Hindawi Limited ; 2020
    In:  Laser and Particle Beams Vol. 38, No. 4 ( 2020-12), p. 269-276
    In: Laser and Particle Beams, Hindawi Limited, Vol. 38, No. 4 ( 2020-12), p. 269-276
    Abstract: In the present work, Titanium dioxide (TiO 2 ) micro–nanostructured thin films are deposited by a cold atmospheric plasma jet on carbon fiber substrates. The surface morphology, grain size, and structure phase of TiO 2 thin films are investigated by scanning electron microscopic (SEM), X-ray diffraction (XRD), and Raman spectrum. As the discharge voltage increased from 5 to 15 kV, the size of these TiO 2 particles decreased from 2 to 3 μm to less than 1 μm. The XRD and Raman spectroscopic results show TiO 2 on the carbon fiber surface prepared by atmospheric plasma jet is at the mixture phase of anatase and rutile. We also investigated the adhesion and proliferation assays of MC3T3-E1 preosteoblasts on the samples. The surface with smaller TiO 2 particles deposited on carbon fiber is more appropriate for attachment of preosteoblasts. Furthermore, the highest proliferation of MC3T3-E1 was found on a sample with smaller TiO 2 particles after incubation. Our data suggest that the increased roughness fosters cell attachment and proliferation on the surface of TiO 2 /carbon fibers.
    Type of Medium: Online Resource
    ISSN: 0263-0346 , 1469-803X
    Language: English
    Publisher: Hindawi Limited
    Publication Date: 2020
    detail.hit.zdb_id: 2021816-3
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  • 2
    Online Resource
    Online Resource
    Hindawi Limited ; 2022
    In:  International Journal of Endocrinology Vol. 2022 ( 2022-10-26), p. 1-10
    In: International Journal of Endocrinology, Hindawi Limited, Vol. 2022 ( 2022-10-26), p. 1-10
    Abstract: Objectives. Thyroid hormone is acknowledged as a pivotal factor in skeletal development and adult bone maintenance. However, available data about the relationship between sensitivity to thyroid hormone and bone mineral density (BMD) remain limited and conflicting. The purpose of the study was to explore the complex relationship between sensitivity to thyroid hormone indices and BMD using cross-sectional analysis. Methods. An overall sample of 3,107 males from the National Health and Nutrition Examination Survey (NHANES) was studied in the study. The thyroid hormone sensitivity indices included free triiodothyronine/tree thyroxine (FT3/FT4), thyroid-stimulating hormone index (TSHI), thyrotroph thyroxine resistance index (TT4RI), and thyroid feedback quantile-based index (TFQI). Given the complex study design and sample weights, the correlation between sensitivity to thyroid hormone indices and BMD was evaluated through multivariate linear regression models, and extra subgroup analyses were performed to examine the robustness of the results. Results. Among the 3,107 participants, we demonstrated that FT3/FT4 was negatively correlated with lumbar BMD (β = −0.0.35, 95% CI: −0.084–0.013, P 〈 0.05 ). In the terms of central sensitivity to thyroid hormone, TFQI showed a significant negative relationship with the BMD of the lumbar (β = −0.018, 95% CI: −0.033 to −0.003, P 〈 0.05 ), total femur (β = −0.020, 95% CI: −0.035 to −0.006, P 〈 0.01 ), and femur neck (β = −0.018, 95% CI: −0.031 to −0.005, P 〈 0.01 ). In the subgroup analyses stratified by body mass index (BMI), the significant negative correlation between TFQI and lumbar BMD remained in the male participants with BMI between 18.5 and 24.9 kg/m2. Conclusions. Decreased indices of sensitivity to thyroid hormones are strongly associated with increased lumbar BMD, suggesting that the dysfunction of peripheral and central response to thyroid hormone might contribute to bone loss. In addition, FT3/FT4 and TFQI were considered to be the preferable indicators to guide the prevention and clinical treatment of osteoporosis.
    Type of Medium: Online Resource
    ISSN: 1687-8345 , 1687-8337
    Language: English
    Publisher: Hindawi Limited
    Publication Date: 2022
    detail.hit.zdb_id: 2502951-4
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