Magnesium Measurement in Routine Clinical Practice

Ryan, M. F.; Barbour, H M

doi:10.1177/000456329803500401

Cited by 46 publications

(38 citation statements)

References 56 publications

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“…After gravimetric preparation of the mixture, the isotopic composition was verified by thermal ionization mass spectrometry (TIMS; see below) against a commercial standard of natural isotopic composition (Titrisol; Merck, Darmstadt, Germany). The normalized 24 Mg / 25 Mg isotpe ratio (3 independent runs) of the isotopic label was 8.029 ± 0.014.…”

Section: Bread Rollsmentioning

confidence: 96%

“…25 MgO (enrichment 97.86%; AMT Ltd) according to the same procedure as described for 26 MgCl 2 . An adjustment of the ratio of 24 Mg to 25 Mg in the isotopic label was necessary to allow for internal normalization of the data. Normalization of the isotope ratios increases reproducibility provided that the natural ratio of 24 Mg to 25 Mg is not altered significantly by addition of the label.…”

Section: Bread Rollsmentioning

confidence: 99%

“…An adjustment of the ratio of 24 Mg to 25 Mg in the isotopic label was necessary to allow for internal normalization of the data. Normalization of the isotope ratios increases reproducibility provided that the natural ratio of 24 Mg to 25 Mg is not altered significantly by addition of the label. After gravimetric preparation of the mixture, the isotopic composition was verified by thermal ionization mass spectrometry (TIMS; see below) against a commercial standard of natural isotopic composition (Titrisol; Merck, Darmstadt, Germany).…”

Section: Bread Rollsmentioning

confidence: 99%

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Measurement of magnesium absorption and retention in type 2 diabetic patients with the use of stable isotopes

Wälti

Zimmermann

Walczyk

et al. 2003

The American Journal of Clinical Nutrition

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Background: Magnesium deficiency has been associated with type 2 diabetes and may reduce insulin sensitivity and impair glucose tolerance. The etiology of magnesium depletion in diabetes is unclear. Animal studies suggest that diabetes may impair magnesium absorption; however, there are no published data on magnesium absorption in humans with diabetes. Objective: Magnesium absorption from a test meal and the excretion and retention of magnesium were compared between patients with type 2 diabetes and healthy control subjects. Design: A meal labeled with 10 mg 26 Mg isotopic label was administered, and stool and urine samples were collected for 10 and 6 d, respectively. Apparent absorption was calculated as the difference between the oral dose of 26 Mg isotopic label and the total amount of the isotopic label excreted in the feces. Magnesium retention was calculated from the apparent absorption and urinary excretion of 26 Mg isotopic label in the 6 d after administration. Results: Mean (± SD) values for fractional magnesium absorption in the diabetic patients and the control subjects were 59.3 ± 7.0% and 57.6 ± 8.5%, respectively (NS). Mean (± SD) urinary magnesium excretion values in the diabetic patients and the control subjects were 11.2 ± 2.6% and 11.7 ± 3.8%, respectively (NS); retention values were 54.2 ± 7.1% and 51.4 ± 6.1%, respectively (NS). Conclusion: Dietary magnesium absorption and retention are not impaired in patients with reasonably well-controlled type 2 diabetes.Am J Clin Nutr 2003;78:448-53.

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Section: Bread Rollsmentioning

confidence: 96%

Section: Bread Rollsmentioning

confidence: 99%

Section: Bread Rollsmentioning

confidence: 99%

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Measurement of magnesium absorption and retention in type 2 diabetic patients with the use of stable isotopes

Wälti

Zimmermann

Walczyk

et al. 2003

The American Journal of Clinical Nutrition

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“…1 The relationship between magnesium deficiency and diabetes mellitus has been controversial in the medical field in recent years. 2 In addition, Mg (II) is involved in a series of metabolism processes in the human body, including the formation of bones and cells. 3 Widespread application of silver in industry, foods, drugs, beverages, photographic film production and the manufacturing of fungicides 4,5 have resulted in increasing silver content of environmental water samples.…”

Section: Introductionmentioning

confidence: 99%

Using an Indol Derivative as Complexing Agent for Cloud Point Preconcentration and Determination of Magnesium and Silver Ions in Various Samples by Faas

Shokrollahi

Tavallali

Montaseri

et al. 2012

J. Chil. Chem. Soc.

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A very simple cloud point extraction (CPE) methodology for the preconcentration of trace amounts of silver and magnesium as a prior step for their determination by flame atomic absorption spectrometry (FAAS) has been developed. The method is based on the extraction of silver and magnesium at pH 10 by using non-ionic surfactant Triton X-114 and 4 methyl-3-((1-H-Indol-3-iyl) (phenyl) methyl)) -1-H-Indol (MPBIM) as a complexing agent. Several important variables that affect the CPE efficiency and FAAS signal were investigated and optimized. The calibration curves, using the preconcentration system, were linear in the range of 0.007-0.200 μg mL -1 with a correlation coefficient of 0.999. The lower limits of detection (3s) obtained in the optimal conditions were 1.47 ng mL -1 and 3.00 ng mL -1 for Mg 2+ and Ag + ions, respectively. The relative standard deviation for five replicate determinations of magnesium and silver at 0.133 μg mL -1 concentration level, were 1.17 and 0.97, respectively. The proposed method was successfully applied to the ultra-trace determination of silver and magnesium in various water samples, blood serum, urine, and radiology film samples.

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“…O magnésio urinário foi determinado a partir de adaptação do método de Nicoll et al (1991), considerando o estudo de Ryan et al (1998), e seguiu-se protocolo de validação desenvolvido em nosso laboratório (SALES et al, 2008).…”

Section: Magnésio Urináriounclassified

Efeito da suplementação com magnésio no desempenho físico em atletas de voleibol profissional

Setaro¹

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Magnesium Measurement in Routine Clinical Practice

Cited by 46 publications

References 56 publications

Measurement of magnesium absorption and retention in type 2 diabetic patients with the use of stable isotopes

Measurement of magnesium absorption and retention in type 2 diabetic patients with the use of stable isotopes

Using an Indol Derivative as Complexing Agent for Cloud Point Preconcentration and Determination of Magnesium and Silver Ions in Various Samples by Faas

Efeito da suplementação com magnésio no desempenho físico em atletas de voleibol profissional

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