Neutral carrier Na+- and Ca2+-selective microelectrodes for intracellular application
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چکیده
منابع مشابه
Neutral carrier-based "Ca(2+)-selective" microelectrodes for the measurement of tetraphenylphosphonium.
Ca(2+)-selective microelectrodes with Simon's neutral carrier ETH 1001 are commercially available and have been widely used for the measurement of both extra- and intracellular calcium. The electrodes demonstrate high selectivity against other cations such as magnesium, sodium, and potassium. We report, however, that the ETH 1001-based microelectrode is a superior tetraphenylphosphonium (TPP+)-...
متن کاملModulation of intracellular Na+ and Ca2+ induced by the cardiac Na+-Ca2+ exchanger in guinea pig ventricular myocytes.
The Na+-Ca2+ exchanger current was measured in single guinea pig ventricular myocytes, using the whole-cell voltage-clamp technique, and intracellular free calcium concentration ([Ca2+](i)) was monitored simultaneously with the fluorescent probe Indo-1 applied intracellularly through a perfused patch pipette. In external solutions, which have levels of Ca2+ (approximately 66 microM Ca2+) though...
متن کامل(1E,2E) -bis (2-aminophenyl) N'1,N'2-dihydroxyethane bis (imidothioate) as a neutral carrier in ion-selective electrode for Ni(II) and it computational studies
A PVC membrane Ni(II) ion selective electrode has been constructed using (1E,2E)-bis(2-aminophenyl)N'1,N'2-dihydroxyethanebis as membrane carrier. The electrode exhibited a goodpotentiometric response for Ni(II) over a wide concentration range 1.0×10-4 to 1.0×10-1M with aslope of 29.4±0.5 mV/decade a and a working pH range of 6.5-9.0. It had a fast response time of≤20s. The best performance was...
متن کاملRole of intracellular Na+ in Ca2+ overload and depressed recovery of ventricular function of reperfused ischemic rat hearts. Possible involvement of H+-Na+ and Na+-Ca2+ exchange.
The roles of H+-Na+ and Na+-Ca2+ exchange in the depression of ventricular function were studied in the reperfused isolated ischemic rat heart. Zero-flow global ischemia was induced for either 15 or 30 minutes and was followed by 30 minutes of aerobic reperfusion. Intracellular Na+ (Na+i) and 45Ca2+ uptake were measured during ischemia and reperfusion. Accumulation of Na+i was modified by prior...
متن کاملAnandamide Reduces Intracellular Ca2+ Concentration through Suppression of Na+/Ca2+ Exchanger Current in Rat Cardiac Myocytes
PURPOSE Anandamide, one of the endocannabinoids, has been reported to exhibit cardioprotective properties, particularly in its ability to limit the damage produced by ischemia reperfusion injury. However, the mechanisms underlying the effect are not well known. This study is to investigate whether anandamide alter Na(+)/Ca(2+) exchanger and the intracellular free Ca(2+) concentration ([Ca(2+)]i...
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ژورنال
عنوان ژورنال: Biophysical Journal
سال: 1982
ISSN: 0006-3495
DOI: 10.1016/s0006-3495(82)84475-5