Magnesium Supplementation Effect On Muscle Magnesium Content And Magnesium Loss In Humans During Hypokinesia

10.5580/760 ◽  
2009 ◽  
Vol 7 (1) ◽  
Keyword(s):  
Magnesium Content ◽  
Magnesium Supplementation ◽  
Magnesium Loss

scholarly journals CHEMICAL CHARACTERIZATION OF UNCOATED ASBESTOS FIBERS FROM THE LUNGS OF ASBESTOS WORKERS BY ELECTRON MICROPROBE ANALYSIS

1972 ◽  
Vol 20 (9) ◽  
pp. 735-740 ◽  
Author(s):  
ARTHUR M. LANGER ◽  
IVAN B. RUBIN ◽  
IRVING J. SELIKOFF ◽  
FRED D. POOLEY
Keyword(s):  
Electron Microprobe ◽  
Microprobe Analysis ◽  
Electron Microprobe Analysis ◽  
Chemical Characterization ◽  
Magnesium Content ◽  
Asbestos Fibers ◽  
Magnesium Loss ◽  
Bulk Chemistry ◽  
Asbestos Body

Lung tissues have been obtained from workmen with defined asbestos fiber exposure. These tissues have been prepared by the carbon extraction technique and examined with the electron microprobe analyzer. The uncoated fibers present in these specimens have been chemically characterized and compared with standard reference asbestos samples. The bulk chemistry of the fibers observed in lung tissues is similar to that of the reference fibers so that identification may be made. However, a statistical analysis of the measured emission characteristics from anthophyllite and amosite indicates that some magnesium loss has taken place. This loss appears to correlate with the magnesium content of the fibers. A slight iron increase was also noted in the same fibers, probably related to an incipient asbestos body formation.

Can the magnesium content of mononuclear blood cells be altered by oral magnesium supplementation?

1992 ◽  
Vol 25 (4) ◽  
pp. 289-292 ◽  
Author(s):  
Norman A. Desbiens ◽  
James J. Marx ◽  
Ronald G. Haas ◽  
Richard A. Reinhart
Keyword(s):  
Blood Cells ◽  
Magnesium Content ◽  
Magnesium Supplementation ◽  
Mononuclear Blood Cells ◽  
Oral Magnesium

Dietary magnesium supplements improve B-cell response to glucose and arginine in elderly non-insulin dependent diabetic subjects

1989 ◽  
Vol 121 (1) ◽  
pp. 16-20 ◽  
Author(s):  
G. Paolisso ◽  
N. Passariello ◽  
G. Pizza ◽  
G. Marrazzo ◽  
R. Giunta ◽  
...  
Keyword(s):  
B Cell ◽  
Cell Response ◽  
Insulin Response ◽  
Magnesium Content ◽  
Acute Insulin Response ◽  
Magnesium Supplementation ◽  
Dietary Magnesium ◽  
Insulin Dependent ◽  
Insulin Dependent Diabetic ◽  
B Cell Response

Abstract. Hypomagnesemia and low erythrocyte magnesium content are both common findings in non-insulin-dependent diabetic subjects. Moreover, intracellular magnesium may play a crucial role in modulating B-cell response to glucose by interfering with potassium permeability. Eight elderly, moderately obese, non-insulin-dependent diabetic subjects were treated with either magnesium supplementation (3 g/day) to the diet or placebo. Both treatment schemes lasted 4 weeks and were separated by a 'wash-out' of 3 weeks. At the end of each treatment period, an iv glucose tolerance test (0.33 g/kg for 3 min) and an iv arginine (5 g) test were performed to determine the B- and A-cell responses. Dietary magnesium supplementation vs placebo produced a slight but significant decrease in basal plasma glucose (8.6 ± 0.3 vs 8.0 ± 0.1 mmol/l, p < 0.05) and an increase in acute insulin response after iv glucose (37.1 ± 2.3 vs −14.7 ±0.9 pmol · 1−1 · (10 min)−1, p < 0.01) and after iv arginine (151 ± 22 vs 81 ± 15 pmol · 1−1 · (10 min)−1, p < 0.01), respectively. Plasma glucagon levels were unaffected by chronic dietary magnesium supplementation as well under basal conditions as in response to arginine. Net increase in acute insulin response after iv glucose and after iv arginine was significantly correlated to the net increase in erythrocyte magnesium content after dietary magnesium supplementation. We conclude that magnesium administration may be a useful adjuvant to the classic hypoglycemic agents in the treatment of non-insulin-dependent diabetic subjects.

Failure of Magnesium Supplementation to Influence Marathon Running Performance or Recovery in Magnesium-Replete Subjects

1992 ◽  
Vol 2 (2) ◽  
pp. 154-164 ◽  
Author(s):  
Sonja Terblanche ◽  
Timothy D. Noakes ◽  
Steven C. Dennis ◽  
De Wet Marais ◽  
Michael Eckert
Keyword(s):  
Muscle Damage ◽  
Muscle Function ◽  
Serum Magnesium ◽  
Magnesium Content ◽  
Control Group ◽  
Marathon Running ◽  
Magnesium Supplementation ◽  
Double Blind ◽  
Running Performance ◽  
Rate Of Recovery

This study examined the effect of magnesium supplementation on muscle magnesium content, on running performance during a 42-kni marathon footrace, and on muscle damage and the rate of recovery of muscle function following the race. Twenty athletes were divided equally into two matched groups and were studied for 4 weeks before and 6 weeks after a marathon in a double-blind trial; the experimental group received magnesium supplement (365 mg per day) and the control group, placebo. Magnesium supplementation did not increase either muscle or serum magnesium concentrations and had no measurable effect on 42-km marathon running performance. Extra magnesium ingestion also had no influence on the extent of muscle damage or the rate of recovery of muscle function. The latter was significantly reduced immediately after the marathon but returned to normal within 1 week. Thus, magnesium supplementation in magnesium-replete subjects did not enhance performance or increase resistance to muscle damage during the race, or the rate of recovery of muscle function following the race.

scholarly journals Properties of Journal Bearing Materials That Determine Their Wear Resistance on the Example of Aluminum-Based Alloys

Materials ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 535
Author(s):  
Alexander Mironov ◽  
Iosif Gershman ◽  
Eugeniy Gershman ◽  
Pavel Podrabinnik ◽  
Ekaterina Kuznetsova ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Wear Resistance ◽  
Journal Bearing ◽  
Tribological Behavior ◽  
Secondary Structures ◽  
Magnesium Content ◽  
Wear Rates ◽  
Relative Extension ◽  
Bearing Materials ◽  
Antifriction Alloys

Potential relations of tribological characteristics of aluminum antifriction alloys with their compositions and mechanical properties were investigated. In this regard, the properties of eight aluminum alloys containing tin from 5.4% to 11% doped with lead, copper, silicon, zinc, magnesium, and titanium were studied. Mechanical properties such as hardness, strength, relative extension, and impact strength were analyzed. Within the tribological tests seizure load and wear of material were evaluated and secondary structures were studied afterwards. The absence of a definitive correlation between tribological behavior and mechanical properties was shown. It was determined that doping tin over 6% is excessive. The seizure load of the alloys increases with the magnesium content. Secondary structures of the alloys with higher wear rates contain one order less magnesium and tin.

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