Ischemia-induced changes in hepatic glycogenolysis and calcium mobilization.

Postmortem Hepatic Glycogenolysis in Hyperinsulinism and Glycogen Disease.

Calcium mobilization in myogenesis

Vasopressin (AVP), oxytocin (OT) and related peptides induce differentiation and hypertrophy in myogenic cells expressing the V1a-vasopressin receptor (V1aR) or the oxytocin receptor (OTR). Either receptor can transduce both ligand signals. Binding of AVP and OT to the V1aR the target cells activates phosphatidylinositol hydrolysis, which in turn releases Ca 2+ from internal stores. The AVP-dep...

Effect of crocin on cardiac antioxidants, and hemodynamic parameters after injuries induced by hepatic ischemia-reperfusion in rats

Objective(s): This research aimed to test the impact of liver ischemia/reperfusion (IR) insult on the activity of antioxidant enzymes, functional enzymes, histological, and hemodynamic parameters of heart, as well as protective function of crocin on these variables in rats.    Materials and Methods: Thirty two rats were randomly assigned into 4 experimental groups (8 rats in each). I: sham-oper...

Secretagogue induced calcium mobilization in single pancreatic acinar cells.

Microspectrofluorometry of fura-2 was utilized to monitor [Ca2+]i in single acinar cells stimulated with a cholinergic agonist and cholecystokinin. A similar amplitude of agonist induced Ca mobilization between single cell and populational approaches was observed. New findings in single cells not observable in populations of cells include: 1) the maintenance of a sustained elevation in [Ca2+]i ...

Endotoxin impairs agonist-induced calcium mobilization in rat mesangial cells.

We hypothesized that endotoxin would impair agonist-induced calcium (Ca2+) mobilization in rat mesangial cells, owing to the induction of nitric oxide synthase (NOS) and augmented nitric oxide (NO) synthesis. We measured basal and bradykinin-induced peak free cytosolic Ca2+ concentrations through microspectrofluorimetry with fura-2 in confluent mesangial cells, and assayed conditioned medium fo...