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Frans_M_Everaerts_Isotachophoresis_378342.pdf

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SEPARATION OF PROTEINS IN AMPHOLYTE GRADIENTS 329<br />

A<br />

i l l<br />

5 WL<br />

~ .... --+ ..--<br />

Fig.13.10. Separation of a normal serum (A) and a pathological serum (B) by zone electrophoresis.<br />

The analysis was carried out on cellulose polyacetate, the proteins subsequently being coloured with<br />

amido black. The electropherogram was obtained with a Kipp (Delft, The Netherlands) densitometer.<br />

1 = Albumin; 2 = 01, -globulin; 3 = a,-globulin; 4 = p-globulin; 5 = yglobulin. These sera were used in<br />

the analyses in the narrow-bore tubes.<br />

TABLE 13.10<br />

COMPOSITIONS OF NORMAL AND PATHOLOGICAL SERA DETERMINED BY ZONE<br />

ELECTROPHORESIS ON CELLULOSE POLYACETATE STRIPS<br />

This mixture wasused in the analyses presented in Figs.13.11-13.15.<br />

Protein Composition (%)<br />

Normal Pa thological<br />

serum serum<br />

Albumin 45 47<br />

0 1 ~ -Globulin 4 6<br />

~~,-Glob~~lin 12 5<br />

p-Globulin 17 4<br />

y-Globulin<br />

___<br />

22 38<br />

At present it is difficult to draw a conclusion from the results shown in Figs.13.11 and<br />

13.12 because the conditions can vary so easily, resulting in completely different<br />

isotachopherograms.<br />

The isotachopherograms in Figs. 13.1 1 and 13.12, especially the W traces, must be<br />

interpreted in a completely different manner to the traces in Fig.13.10. Although<br />

ampholytes are added to the serum proteins in the analysis shown in Figs.13.11 and 13.12,<br />

a relationship still exists between the amount of a species introduced into the system and<br />

the zone length finally occupied by it, with or without the presence of a supporting

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