کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10431494 | 910215 | 2015 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Induction of fiber alignment and mechanical anisotropy in tissue engineered menisci with mechanical anchoring
ترجمه فارسی عنوان
القای تراز فیبر و آنیزوتراپی مکانیکی در منیسک مهندسی بافت با مهار مکانیکی
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کلمات کلیدی
منیزوک، مهندسی بافت، کلاژن، شرایط مرزی، تراز فیبر،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی پزشکی
چکیده انگلیسی
This study investigated the effect of mechanical anchoring on the development of fiber organization and anisotropy in anatomically shaped tissue engineered menisci. Bovine meniscal fibrochondrocytes were mixed with collagen and injected into molds designed to produce meniscus implants with 12Â mm extensions at each horn. After a day of static culture, 10 and 20Â mg/ml collagen menisci were either clamped or unclamped and cultured for up to 8 weeks. Clamped menisci were anchored in culture trays throughout culture to mimic the native meniscus horn attachment sites, restrict contraction circumferentially, and encourage circumferential alignment. Clamped menisci retained their size and shape, and by 8 weeks developed circumferential and radial fiber organization that resembled native meniscus. Clamping also increased collagen accumulation and improved mechanical properties compared to unclamped menisci. Enhanced organization in clamped menisci was further reflected in the development of anisotropic tensile properties, with 2-3 fold higher circumferential moduli compared to radial moduli, a similar ratio to native meniscus. Ten and 20Â mg/ml clamped menisci had similar levels of organization, with 20Â mg/ml menisci producing larger diameter fibers and significantly better mechanical properties. Collectively, these data demonstrate the benefit of using bio-inspired mechanical boundary conditions to drive the formation of a highly organized collagen fiber network.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Biomechanics - Volume 48, Issue 8, 1 June 2015, Pages 1436-1443
Journal: Journal of Biomechanics - Volume 48, Issue 8, 1 June 2015, Pages 1436-1443
نویسندگان
Jennifer L. Puetzer, Esther Koo, Lawrence J. Bonassar,