Changes in sodium, calcium and magnesium ion concentrations in sturgeon (Huso huso) urine and in kidney morphology

1996 ◽  
Vol 165 (7) ◽  
pp. 527-533 ◽  
Author(s):  
L. S. Krayushkina ◽  
A. A. Panov ◽  
A. A. Gerasimov ◽  
W. T. W. Potts
Keyword(s):  
Magnesium Ion ◽  
Huso Huso ◽  
Ion Concentrations ◽  
Sodium Calcium ◽  
Kidney Morphology ◽  
Calcium And Magnesium

scholarly journals Changes in Sodium, Calcium, and Magnesium Ion Concentrations That Inhibit Geobacillus Biofilms Have No Effect on Anoxybacillus flavithermus Biofilms

2015 ◽  
Vol 81 (15) ◽  
pp. 5115-5122 ◽  
Author(s):  
B. Somerton ◽  
D. Lindsay ◽  
J. Palmer ◽  
J. Brooks ◽  
S. Flint
Keyword(s):  
Biofilm Formation ◽  
Magnesium Ion ◽  
Content Type ◽  
High Sodium ◽  
Ion Concentrations ◽  
Sodium Calcium ◽  
Viable Cells ◽  
Anoxybacillus Flavithermus ◽  
Calcium And Magnesium ◽  
The Difference

ABSTRACTThis study investigated the effects of varied sodium, calcium, and magnesium concentrations in specialty milk formulations on biofilm formation byGeobacillusspp. andAnoxybacillus flavithermus. The numbers of attached viable cells (log CFU per square centimeter) after 6 to 18 h of biofilm formation by three dairy-derived strains ofGeobacillusand three dairy-derived strains ofA. flavithermuswere compared in two commercial milk formulations. Milk formulation B had relatively high sodium and low calcium and magnesium concentrations compared with those of milk formulation A, but the two formulations had comparable fat, protein, and lactose concentrations. Biofilm formation by the threeGeobacillusisolates was up to 4 log CFU cm−2lower in milk formulation B than in milk formulation A after 6 to 18 h, and the difference was often significant (P≤ 0.05). However, no significant differences (P≤ 0.05) were found when biofilm formations by the threeA. flavithermusisolates were compared in milk formulations A and B. Supplementation of milk formulation A with 100 mM NaCl significantly decreased (P≤ 0.05)Geobacillusbiofilm formation after 6 to 10 h. Furthermore, supplementation of milk formulation B with 2 mM CaCl2or 2 mM MgCl2significantly increased (P≤ 0.05)Geobacillusbiofilm formation after 10 to 18 h. It was concluded that relatively high free Na+and low free Ca2+and Mg2+concentrations in milk formulations are collectively required to inhibit biofilm formation byGeobacillusspp., whereas biofilm formation byA. flavithermusis not impacted by typical cation concentration differences of milk formulations.

STUDY OF SOME FACTORS THAT AFFECT THE DISTRIBUTION OF NUCLEAR VOLUMES IN PREPARATIONS OF RAT LIVER NUCLEI

1967 ◽  
Vol 45 (7) ◽  
pp. 1175-1183 ◽  
Author(s):  
Roberto Umaña
Keyword(s):  
Rat Liver ◽  
Dna Content ◽  
Direct Relationship ◽  
Magnesium Ion ◽  
Homogenization Procedure ◽  
Ion Concentrations ◽  
Ph Values ◽  
Sucrose Solutions ◽  
Liver Nuclei ◽  
Calcium And Magnesium

The effect of the homogenization procedure, the centrifugation scheme, and the composition of the suspension medium on the distribution of nuclear volumes has been studied.It has been shown that the Waring Blendor not only destroys a greater number of the nuclei during homogenization, but also that this destruction is a selective one. At neutral pH values, no direct relationship appears to exist between the DNA content of the nuclei and their density. For this reason, purification in concentrated sucrose solutions produces a selective loss of the lighter nuclei, which includes small diploid stromal nuclei and some of the larger polyploid type of parenchymal nuclei.The study of the effect of increasing the calcium and magnesium ion concentrations (from 0.001 to 0.005 M) on the nuclear distribution showed that these ions produce a selective shrinkage and condensation of the nuclei, probably through different mechanisms.

Blood Changes in Calcium and Magnesium Ion Concentrations after Whole-Body X-Irradiation

1970 ◽  
Vol 42 (3) ◽  
pp. 560 ◽  
Author(s):  
L. Ababei ◽  
C. Haler ◽  
M. Trandafirescu ◽  
D. Cernătescu ◽  
M. Ionescu ◽  
...  
Keyword(s):  
Whole Body ◽  
Magnesium Ion ◽  
Ion Concentrations ◽  
X Irradiation ◽  
Calcium And Magnesium

Thermal stability of ribosomes from a thermophilic and a mesophilic fungus

1973 ◽  
Vol 19 (6) ◽  
pp. 761-763 ◽  
Author(s):  
H. M. Miller ◽  
M. G. Shepherd
Keyword(s):  
Thermal Stability ◽  
Ion Concentration ◽  
Magnesium Ion ◽  
Penicillium Notatum ◽  
Ribosomal Subunits ◽  
Ion Concentrations ◽  
Thermal Stability Of

Ribosomes and ribosomal subunits from the thermophile Penicillium duponti were found to be more thermostable than the corresponding particles from the mesophile Penicillium notatum. The thermostability of the ribosomes from both organisms was dependent on magnesium ion concentration. The dissociation of the 80-S ribosomes into 60-S and 40-S subunits occurred at higher magnesium ion concentrations for the mesophile than the thermophile.

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