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131.
132.
D Heldenberg B Werbin O Levtow J Ashkenazi A Persits I Tamir 《Biochemistry and experimental biology》1979,15(1):3-6
The composition of various lipids were measured in ten healthy newborns of mothers who were treated with 100 mg vitamin E per day, starting in the 35th week of pregnancy. The maternal serum vitamin E levels following the treatment (1.10 +/- 0.49 mg/dl) showed no increase as compared to the pretreatment values (1.06 +/- 0.38 mg/dl). There was no significant difference in serum vitamin E levels in those newborns whose mothers were treated--(0.19 +/- 0.12 mg/dl) as compared to 10 newborns whose mothers were not treated with vitamin E (0.13 +/- 0.07 mg/dl). However, there was a striking increase in the relative concentration of linoleic acid in the adipose tissue to those newborns whose mothers were treated (9.4%--versus--4.1%). 相似文献
133.
134.
L. Peleg A. Dotan P. Luzato I. E. Ashkenazi 《In vitro cellular & developmental biology. Plant》1990,26(10):978-982
Summary Oscillations in glyceraldehyde-3-phosphate dehydrogenase (GAPD) and glucose-6-phosphate dehydrogenase (G6PD) activities were
recorded in suspensions of intact human red blood cells (RBCs) exposed to various light regimens. The periods of these oscillations,
defined as “long ultradian,” ranged between 13 and 18 h regardless of light regimen. The patterns of enzymatic activities
were the same when assayed at each time point, in full hypotonic hemolysates, and membrane-free hemolysates. However, if hemolysates
were prepared by sonication the activity pattern did not exhibit significant oscillations and the activity was higher than
that recorded in hypotonic hemolysates. The observed rhythms may reflect a time-dependent attachment and detachment of enzyme
molecules from cell membrane, suggesting that at the bound state the enzyme molecules are (temporarily) inactive. Oscillations
with similar long ultradian periods were also observed in Ca++ concentration of suspended RBCs and in the binding of Ca++45 to human RBC ghosts. Treatment of the RBCs with A2C or Diamide before the preparation of the ghosts changed or distorted the rhythmic pattern of Ca++45 binding. These results point to the role of the membrane in processing the long ultradian oscillations. The relation between
this type of oscillations to circadian rhythm is discussed. 相似文献
135.