کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5485431 1523189 2017 21 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Partial ablation of the pancreas of Sprague Dawley® rats by focused ultrasound reveals no significant adverse effects on glycometabolism function
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم آکوستیک و فرا صوت
پیش نمایش صفحه اول مقاله
Partial ablation of the pancreas of Sprague Dawley® rats by focused ultrasound reveals no significant adverse effects on glycometabolism function
چکیده انگلیسی
To investigate the safety of focused ultrasound (FUS) partial ablation on the pancreas of Sprague Dawley® (SD) rats by histopathological examination of the outcome and investigation of glycometabolism function changes after local ablation. A total of 135 healthy SD rats were randomly divided into three groups (n = 45 of each): FUS ½ group, FUS ¼ group, and control group. Levels of serum amylase was measured using the enzyme dynamics method, fasting blood glucose was measured by the glucose oxidase-peroxidase method, fasting serum insulin was measured by direct chemiluminescence assay, and an ELISA was used to measure fasting serum glucagon immediately after treatment, and at 2 h, 3 days, 1, 2, 3 and 4 weeks, 3 and 6 months after FUS ablation. Pancreatic tissue was stained with hematoxylin and eosin and the pathology of the ablation area was examined under an optical microscope; additionally, the expression of insulin and glucagon was investigated by immunohistochemistry. Compared with the control group, serum amylase and fasting blood glucose levels in the ablation groups rose significantly immediately after operation; fasting blood glucose, serum amylase, serum insulin and glucagon levels in the ablation groups were significantly different at 2 h after treatment, and serum amylase levels in the ablation groups remained significantly different on day 3. Histological findings showed that the coagulation necrosis area gradually shrank, with formation of new blood vessels observed at week 3, and new ducts observable in the ablation area at the 3rd month after FUS ablation, but no formation of islets was observed. Expression of insulin and glucagon in the ablation groups were significantly higher than in the control group at 2 h after FUS ablation. There were no significant adverse effects on the glycometabolic function of SD rats after FUS ablation, and the influence of FUS treatment on pancreatic functions were minimal.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultrasonics - Volume 80, September 2017, Pages 113-118
نویسندگان
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