Relationship between intracellular proton buffering capacity and intracellular pH
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چکیده
منابع مشابه
Intracellular pH and intracellular buffering power of the cat brain.
ROOS, ALBERT. Intracellular pH and intracellular buffering power of the cat brain. Am. J. Physiol. 2og(6): 1233-1246. 1965.~In 49 cats the intracellular pH (pHi) of the brain was estimated from the distribution of 5,5-dimethyloxazolidine-2 ,4-dione2-Cl4 (DMO) between brain, plasma, and CSF, at arterial pCOz of 14.5-83.2 mm Hg. From six cats cortical biopsies were taken; in the remainder, brain ...
متن کاملIntracellular pH and intrinsic H+ buffering capacity in normal and hypertrophied right ventricle of ferret heart.
OBJECTIVE To answer the questions: (a) What is the effect of hypertrophy on the intracellular pH (pHi) and buffering power of cardiac muscle, and (b) How does hypertrophy affect the ability of cardiac muscle to recover from intracellular acidosis induced by hypoxia. METHODS In nominally HCO3(-)-free, HEPES-buffered Tyrode solution (35 degrees C), pHi and the intrinsic buffering power (beta i,...
متن کاملIntracellular pH and buffering power of rat brain.
ROOS, ALBERT. Intracellular PH and buffering power of rat brain. Am. J. Physiol. 22 l(1) : 176-l 8 1. 1971 .-Intracellular pH and bicarbonate concentration and cortical CO2 concentration were derived from the distribution of 5,5-dimethyloxazolidine-2,4dione (DMO) between arterial plasma water and brain water in 106 rats anesthetized with pentobarbital and 24 rats anesthetized with nitrous oxide...
متن کاملIntracellular calcium buffering capacity in isolated squid axons
Changes in ionized calcium were studied in axons isolated from living squid by measuring absorbance of the Ca binding dye Arsenazo III using multiwavelength differential absorption spectroscopy. Absorption changes measured in situ were calibrated in vitro with media of ionic composition similar to axoplasm containing CaEGTA buffers. Calcium loads of 50-2,500 mumol/kg axoplasm were induced by mi...
متن کاملIntracellular proton mobility and buffering power in cardiac ventricular myocytes from rat, rabbit, and guinea pig.
Intracellular pH (pHi) is an important modulator of cardiac function. The spatial regulation of pH within the cytoplasm depends, in part, on intracellular H+ (Hi+) mobility. The apparent diffusion coefficient for Hi+, DHapp, was estimated in single ventricular myocytes isolated from the rat, guinea pig, and rabbit. DHapp was derived by best-fitting predictions of a two-dimensional model of H+ d...
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ژورنال
عنوان ژورنال: Kidney International
سال: 1992
ISSN: 0085-2538
DOI: 10.1038/ki.1992.6