VOPROSY MEDITSINSKOI KHIMII (ISSN 0042-8809)

Aspartate aminotransferase activity as dependent on the degree of serum dilution

   
Nikiforov V.N., Pavlenko A.A., Kurganov B.I., Gusniev A.N.
PubMed Id: 3811289
Year: 1986  Volume: 32  Issue: 6  Pages: 60-63
Dependence of the enzymatic reaction rate V. catalyzed by aspartate aminotransferase, on concentration of standard human blood serum Moni-trol I ('Dade', Switzerland) was studied. In the range of moderate dilutions, which did not exceed 1.3-times, the V value altered in accordance with the blood serum concentration C. Under conditions of extensive dilutions dependence of V on blood serum concentration became complicated. The non-linear type of V dependence on blood serum concentration appears to be due to deaggregation of the enzyme molecules with formation of more active fragments as a result of blood serum dilution. Two parameters should be used for characteristics of blood serum aspartate aminotransferase activity: the enzymatic activity of undiluted blood serum as well as the ratio between specific activities of the enzyme in an associated from and the products of its dissociation, i.e. when C-1 and C-0, respectively.
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Nikiforov, V. N., Pavlenko, A. A., Kurganov, B. I., Gusniev, A. N. (1986). Aspartate aminotransferase activity as dependent on the degree of serum dilution. Voprosy Meditsinskoi Khimii, 32(6), 60-63.
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