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The complementary disciplines of genomics and proteomics offer better insights into the molecular mechanisms of diseases. While genomics hunts for defining our static genetic substrate, proteomics explores the structure and function of proteins expressed by a cell or tissue type under specified conditions. In the past decade, proteomics has been revolutionized by the application of techniques such...
Reported species differences in the stimulus-secretion coupling of insulin release made it important to compare the Ca2+ handling of rat β-cells with that previously observed in mice. Single β-cells and small aggregates were prepared from pancreatic islets of Wistar rats, attached to cover slips and then used for measuring the cytoplasmic Ca2+ concentration ([Ca2+]i) with the ratiometric fura-2 technique...
Pancreatic β-cells from obese-hyperglycemic (ob/ob) mice are widely used for studying the mechanisms of insulin release, including its regulation by the cytoplasmic Ca2+ concentration ([Ca2+]i). In this study, we compared changes of [Ca2+]i in single β-cells isolated from ob/ob mice with those from lean mice using dual-wavelength microfluorometry and the indicator fura-2. There were no differences...
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