THE SPECTRUM OF PLASMA ESTERASE ACTIVITY IN YOUNG, OLD, AND COLD-ACCLIMATED RATS

1964 ◽  
Vol 42 (12) ◽  
pp. 1711-1715 ◽  
Author(s):  
D. G. Baker ◽  
R. Ghys ◽  
D. Coles ◽  
S. Christie

Qualitative changes occurred in the spectrum of plasma esterase activity with increasing age. The trend was toward a decrease in the number of specific proteins having esterase activity. Acclimation to cold did not accelerate the onset of this trend. In the plasma esterase activity during acclimation to cold, there were no changes which would suggest accelerated aging.

Author(s):  
Sandra Casas Recasens ◽  
Borja Garcia Cosio ◽  
Sergi Pascual-Guardia ◽  
Ady Acosta-Castro ◽  
Alicia Borras-Santos ◽  
...  

1987 ◽  
Vol 33 (4) ◽  
pp. 387-390 ◽  
Author(s):  
F. M. Williams ◽  
S. I. Asad ◽  
M. H. Lessof ◽  
M. D. Rawlins

Pharmacology ◽  
1979 ◽  
Vol 18 (6) ◽  
pp. 294-298 ◽  
Author(s):  
R. Calvo ◽  
R. Carlos ◽  
S. Erill

1988 ◽  
Vol 66 (9) ◽  
pp. 1883-1890 ◽  
Author(s):  
P. C. Bonham-Smith ◽  
M. Kapoor ◽  
J. D. Bewley

Maize seedlings respond to heat shock, water stress, abscisic acid treatment, and wounding with the synthesis of stress-specific proteins. Unlike the almost instantaneous (10 min) heat-shock response, a much longer stress exposure is required before the synthesis of water stress induced, abscisic acid induced, or wound-induced proteins. As with heat shock, the protein profile of 24 h water stress induced proteins is consistent between tissue types, whereas seedling tissue response to wounding or heavy metals varies. Wounding of the mesocotyl for 12 h or more results in a complex change (induction and inhibition) in protein synthesis in the growing region, while protein synthesis in the nongrowing region is affected to a much lesser extent.


1991 ◽  
Vol 69 (5) ◽  
pp. 1265-1269 ◽  
Author(s):  
V. Lakshmipathi ◽  
M. Sujatha

Quantitative and qualitative changes in the levels of activity of esterases are studied in five stages of developing embryos of the freshwater crab Barytelphusa guerini. Esterase activity levels increase enormously as development progresses. Electrophoresis on 7.5% polyacrylamide disc gels reveals seven zones of esterase active bands. Only two of the seven zones of esterases are present in all five stages. These bands show an increase in their activity in stages III–V. Substrate specificity and inhibitor sensitivity of the enzymes were used to classify esterases. The twofold serial dilution technique was employed to estimate the relative proportion of each esterase band observed during electrophoresis. Heat denaturation studies indicate an increase in the thermal stability of the enzyme as development progresses.


Endocrinology ◽  
1984 ◽  
Vol 115 (6) ◽  
pp. 2406-2417 ◽  
Author(s):  
SUSAN S. KADNER ◽  
JOSEPH KATZ ◽  
BRETT A. BERLINER ◽  
MORTIMER LEVITZ ◽  
THOMAS H. FINLAY

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