کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5889326 | 1568138 | 2015 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Skin wound trauma, following high-dose radiation exposure, amplifies and prolongs skeletal tissue loss
ترجمه فارسی عنوان
تروما زخم پوست، پس از قرار گرفتن در معرض تابش با دوزهای بالا، موجب تشدید و از دست دادن بافت اسکلتی می شود
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کلمات کلیدی
ترومای ترکیبی مغز استخوان، موش، ترابکالر، استئوکلاست، بیومارکرهای استخوان،
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
زیست شناسی تکاملی
چکیده انگلیسی
The present study investigated the detrimental effects of non-lethal, high-dose (whole body) γ-irradiation on bone, and the impact that radiation combined with skin trauma (i.e. combined injury) has on long-term skeletal tissue health. Recovery of bone after an acute dose of radiation (RI; 8 Gy), skin wounding (15-20% of total body skin surface), or combined injury (RI + Wound; CI) was determined 3, 7, 30, and 120 days post-irradiation in female B6D2F1 mice and compared to non-irradiated mice (SHAM) at each time-point. CI mice demonstrated long-term (day 120) elevations in serum TRAP 5b (osteoclast number) and sclerostin (bone formation inhibitor), and suppression of osteocalcin levels through 30 days as compared to SHAM (p < 0.05). Radiation-induced reductions in distal femur trabecular bone volume fraction and trabecular number through 120 days post-exposure were significantly greater than non-irradiated mice (p < 0.05) and were exacerbated in CI mice by day 30 (p < 0.05). Negative alterations in trabecular bone microarchitecture were coupled with extended reductions in cancellous bone formation rate in both RI and CI mice as compared to Sham (p < 0.05). Increased osteoclast surface in CI animals was observed for 3 days after irradiation and remained elevated through 120 days (p < 0.01). These results demonstrate a long-term, exacerbated response of bone to radiation when coupled with non-lethal wound trauma. Changes in cancellous bone after combined trauma were derived from extended reductions in osteoblast-driven bone formation and increases in osteoclast activity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bone - Volume 81, December 2015, Pages 487-494
Journal: Bone - Volume 81, December 2015, Pages 487-494
نویسندگان
Joshua M. Swift, Sibyl N. Swift, Joan T. Smith, Juliann G. Kiang, Matthew R. Allen,