منابع مشابه
Organellar calcium signalling mechanisms in Drosophila epithelial function.
Calcium signalling and calcium homeostasis are essential for life. Studies of calcium signalling thus constitute a major proportion of research in the life sciences, although the majority of these studies are based in cell lines or isolated cells. Epithelial cells and tissues are essential in the regulation of critical physiological processes, including fluid transport; and so the modulation of...
متن کاملCalcium influx factor is synthesized by yeast and mammalian cells depleted of organellar calcium stores.
Depletion of endoplasmic reticulum Ca2+ stores leads to the entry of extracellular Ca2+ into the cytoplasm, a process termed capacitative or store-operated Ca2+ entry. Partially purified extracts were prepared from the human Jurkat T lymphocyte cell line and yeast in which Ca2+ stores were depleted by chemical and genetic means, respectively. After microinjection into Xenopus laevis oocytes, th...
متن کاملMultiple cytosolic calcium buffers in posterior pituitary nerve terminals
Cytosolic Ca(2+) buffers bind to a large fraction of Ca(2+) as it enters a cell, shaping Ca(2+) signals both spatially and temporally. In this way, cytosolic Ca(2+) buffers regulate excitation-secretion coupling and short-term plasticity of release. The posterior pituitary is composed of peptidergic nerve terminals, which release oxytocin and vasopressin in response to Ca(2+) entry. Secretion o...
متن کاملMore on calcium ion activity buffers for coagulation testing.
terpreted as postovulatory luteal phase rather than follicular. Assuming a 2.2 mg/L positive bias with SST, our current laboratory follicular phase progesterone reference range of ,1.6 mg/L could increase to ,3.8 mg/L with SST. We recommend that all progesterone serum samples be collected in plain glass tubes until this SST interference problem is resolved. Our laboratory has notified Roche Dia...
متن کاملEstimation of presynaptic calcium currents and endogenous calcium buffers at the frog neuromuscular junction with two different calcium fluorescent dyes
At the frog neuromuscular junction, under physiological conditions, the direct measurement of calcium currents and of the concentration of intracellular calcium buffers-which determine the kinetics of calcium concentration and neurotransmitter release from the nerve terminal-has hitherto been technically impossible. With the aim of quantifying both Ca(2+) currents and the intracellular calcium ...
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ژورنال
عنوان ژورنال: Cold Spring Harbor Perspectives in Biology
سال: 2011
ISSN: 1943-0264
DOI: 10.1101/cshperspect.a004069