Calcium accumulation and calcium overload in the intracellular organelles has been known to be the main reason for cellular abnormalities related to oxidative stress. The study deals with the effects of an important calcium channel blocker (CCB)amlodipine in countering the hypoxia induced oxidative stress, in vitro and in vivo. We examined the intracellular calcium changes along withReactive Ox...

Simultaneous patch-clamp and fura-2 measurements were used to investigate the electrical properties and receptor-mediated changes of intracellular calcium in renal juxtaglomerular cells. Here we report the presence of voltage-activated inward and outward rectifying potassium currents and the inhibition of the anomalous inward rectifying potassium current by angiotensin II (ANG-II). This action ...

The Malpighian tubule of Drosophila melanogaster is a useful model system for studying the regulation of epithelial ion transport. In acutely isolated tubules, the transepithelial potential (TEP) undergoes large oscillations in amplitude with a period of approximately 30s. The TEP oscillations are diminished by reductions in the peritubular chloride concentration in a manner consistent with the...

14-Symp Dysregulation of Intracellular Calcium in Alzheimer’s Disease Brian J. Bacskai, Kishore V. Kuchibhotla, Carli Lattarulo, Bradley T. Hyman. Massachusetts Gen Hosp, Charlestown, MA, USA. Alzheimer’s disease is characterized by the deposition of senile plaques in the brain resulting in focal neurotoxicity that ultimately leads to neural network disruption. Intracellular calcium is a tightl...

The whole plant of Biophytum petersianum was extracted with a mixture of water – alcohol (1:1) to evaluate its relaxant effect on aorta rings. In isolated Wistar rat tissue, the hydro-ethanolic extract (0.1; 0.25 and 0.5 mg/ml) non-competitively antagonized calcium chloride and high-K + - induced aorta contractions in a concentration-dependent manner. Moreover, the inhibition of noradr...