کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7704901 1496903 2016 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Dielectric study of interaction of water with normal and osteoarthritis femoral condyle cartilage
ترجمه فارسی عنوان
مطالعه دیسترولیک اثر متقابل آب با نرمال و استئوآرتریت غضروف کمردرد فمورال
کلمات کلیدی
طیف سنجی دی الکتریک، غضروف استئوآرتریت، پروتون های آب هدایت الکتریکی، درجه حرارت،
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
چکیده انگلیسی
The main goal of this paper is the in vitro study of healthy and osteoarthritis (OA) human cartilage using the dielectric spectroscopy in the alpha-dispersion region of the electric field and in the temperatures from 25 to 140 °C. The activation energy of conductivity needed to break the bonds formed by water in the extracellular matrix takes the average values of 61 kJ/mol and 44 kJ/mol for the control and OA cartilages, respectively. At 28 °C, the small difference appears in the permittivity decrement between the control and OA cartilages, while the conductivity increment is about 2 times higher for the control tissue than that for the OA tissue. At 75 °C, the conductivity increment for both of these samples is 8 times higher than their respective permittivity decrement. In addition, at 140 °C the values of these both parameters for the OA tissue decrease by 8 times as compared to those recorded for the control sample. The relaxation frequency of about 10 kHz is similar for both of these samples. The knowledge on dielectric properties of healthy and OA cartilage may prove relevant to tissue engineering focused on the repair of cartilage lesions via the layered structure designing.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioelectrochemistry - Volume 110, August 2016, Pages 32-40
نویسندگان
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