کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9921512 1559225 2005 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The responses to manipulation of extracellular and intracellular calcium are altered in the streptozotocin-diabetic rat colon and ileum
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب سلولی و مولکولی
پیش نمایش صفحه اول مقاله
The responses to manipulation of extracellular and intracellular calcium are altered in the streptozotocin-diabetic rat colon and ileum
چکیده انگلیسی
Studies were performed to see if alterations in Ca2+ homeostasis underlie the gastrointestinal motility complications seen in many diabetic patients. Experiments were performed on colonic and ileal tissues taken from streptozotocin-induced diabetic and control rats. Diabetes caused alterations in the responses of the tissues to Ca2+ manipulation but these differed between the colon and ileum. In the colon a small but not significant increase in contractile responses to CaCl2 was observed in diabetic tissues, whereas the responses of the ileum were depressed relative to those of the controls. In contrast, responses of the diabetic ileum to the Ca2+ channel agonist Bay K8644 were greater than those of the controls, whilst the agonist failed to contract the colon. Similarly, the Ca2+-ATPase inhibitors, thapsigargin and cyclopiazonic acid, produced contractions which were greater in diabetic ileal tissues. Thus, alterations in the responses of the diabetic gut to Ca2+ manipulation are complex, and also tissue-specific.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: European Journal of Pharmacology - Volume 509, Issue 1, 10 February 2005, Pages 77-83
نویسندگان
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