Distribution of Rubidium in the Organism

Krulík, R; Farská, I; Prokeš, Ján

doi:10.1159/000117596

Cited by 3 publications

(4 citation statements)

References 7 publications

(7 reference statements)

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“…The release of rubidium from the cell depends on diffusion, which is very slow; this explains the considerable biological half-times for this ion, as seen from our own study (8) and from the works of other authors (3,4). It must further be emphasized, however, that affinity of the cell proteins can also play a very important role in maintenance of the intracellular rubidium concentration.…”

Section: Discussionsupporting

confidence: 58%

Effect of Rubidium, Lithium and Cesium on Brain ATPase and Protein Kinases

Krulík¹,

Farská²,

Prokeš³

1977

Neuropsychobiology

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The authors studied the effect of rubidium, lithium and cesium on the ATPase system and c-AMP protein kinase in brain. They demonstrated that rubidium could replace potassium in the Na⁺K⁺-ATPase system, whereas lithium and cesium had no effect on this enzyme activity in the absence of potassium. K⁺-dependent ATPase was activated by even low rubidium concentrations; lithium and cesium inhibited it. None of three (rubidium, lithium and cesium) affected c-AMP protein kinase.

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Section: Discussionsupporting

confidence: 58%

Effect of Rubidium, Lithium and Cesium on Brain ATPase and Protein Kinases

Krulík¹,

Farská²,

Prokeš³

1977

Neuropsychobiology

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“…We have shown that cesium transport differs somewhat from potassium and rubidium transport (9). In this, passive transport probably plays an important role and active transport across the cell membrane may also be different from that of rubidium.…”

Section: Discussionmentioning

confidence: 75%

“…rubidium, it is not localized strictly intracellularly and its infiltration into the cell takes much longer. The plasma and RBC rubidium levels were found to even out in 1.5 h in rats and in 4 h in man (9). The time for cesium is significantly longer -about 7 h in rats and dozens of hours in man.…”

Section: Discussionmentioning

confidence: 91%

Distribution of Cesium in the Organism and Its Effect on the Nucleotide Metabolism Enzymes

Krulík¹,

Farská²,

Prokeš³

et al. 1980

Int Pharmacopsychiatry

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After the intraperitoneal administration of 0.5 mEq 134CsCl • kg^-1 to mice, the maximum cesium level in the kidneys, heart, lungs and liver was found in the first hour (T(1/2) 13 h), in the muscles after 8 h (T(1/2) 180 h), in the brain after 24 h (T(1/2) 140 h) and in the blood after 24 h. Maximum cesium levels were found in the muscles. Rats excreted about 17% of the administered dose in 24 h and 38% in 144 h. Most of the cesium (about 90%) is excreted in the urine. In rats, equalization of the plasma and RBC cesium levels takes longer than 6 h. Cesium transport is not entirely dependent on the ATPase system, as shown by the results given by the crude mitochondrial fraction with a reduced potassium content. Among the various univalent ions studied, the effect of cesium on creatine kinase, 5'-nucleotidase, phosphodiesterase and deaminase activity was the smallest.

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“…It has also been found that rubidium and manganese, in addition to zinc, are preferentially taken up by tumors in the brain . It could replace potassium in the Na + K‐ATPase (sodium‐potassium pump) system . Rubidium chloride might have application in future psychochemical research and therapy of the affective disorders such as depressions .…”

Section: Resultsmentioning

confidence: 99%

Quantitative determination of macroelement and microelement content of fresh and processed bamboo shoots by wavelength dispersive X‐ray fluorescence spectrometry

et al. 2019

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Bamboo shoots are considered as healthy and nutritional food as they supply proteins, dietary fiber, phenols, phytosterols, vitamins, and minerals in considerable quantities and capture a novel place in the spectrum of plant foods. Besides nutrients and bioactive compounds, shoots also contain antinutrient (cyanogen) that needs to be removed by adequate processing prior to consumption. This study was undertaken to investigate the effects of fermentation, brine preservation, and boiling on levels of mineral elements in shoots of Dendrocalamus hamiltonii using wavelength dispersive X‐ray fluorescence (WD‐XRF) spectrometry. WD‐XRF spectrometry is a method that causes the least destruction to the raw plant material as no harsh chemicals are used and gives the most accurate results. Fermentation process resulted in significant increase in the levels of Rb (9%), S (11%), Mg (12%), Zn (46%), Ca (56%), and Fe (87%); however, Na (18.79 g/100 g, dry weight), Cl (24.73 g/100 g, dry weight), and Br (20.0 mg/100 g, dry weight) content increased drastically after brine preservation. Boiling increased the levels of Fe by 139% but did not affect the Rb (20.0 mg/100 g, dry weight) and Zn content (10.2 mg/100 g, dry weight) of the shoots. In general, fermentation, which led to the lowest loss of mineral elements, appears the best method in enhancement and retention of the mineral content in bamboo shoots and holds the prospect at industrial and society levels.

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Distribution of Rubidium in the Organism

Cited by 3 publications

References 7 publications

Effect of Rubidium, Lithium and Cesium on Brain ATPase and Protein Kinases

Effect of Rubidium, Lithium and Cesium on Brain ATPase and Protein Kinases

Distribution of Cesium in the Organism and Its Effect on the Nucleotide Metabolism Enzymes

Quantitative determination of macroelement and microelement content of fresh and processed bamboo shoots by wavelength dispersive X‐ray fluorescence spectrometry

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