The presence of histamine and acetylcholine in the spleen of the ox and the horse.
The presence of histamine and acetylcholine in the spleen of the ox and the horse.
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DOI:
10.1113/jphysiol.1929.sp002598
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发表时间:
1929-10-01
影响因子:
5.5
通讯作者:
Dudley, HW
中科院分区:
文献类型:
--
作者:
Dale, HH;Dudley, HW
an activity resembling that of choline, and the latter base was isolated from it as the chloroaurate, of which 17* 5 g.(corresponding to 4-78 g. of choline) were obtained from 23 kg. of spleen substance. Fraction B had an activity resembling that of histamine, and this accounted for a large part of the total activity of the extract; but, since the active principle was not precipitated at the appropriate stage of the silver fractionation, Berlin concluded that the substance was not histamine itself, and that this base was, indeed, not present in the extract. From" hormonal"-he separated two similar fractions, but without isolating the base in either case. Stern and Rothlin (6), who had compared the actions of a series of organ extracts on isolated arterial strips and other forms of plain muscle, found that the extract of spleen had a specially powerful stimulant action. From a watery decoction of spleen, purified by evaporation and solution in alcohol, they obtained a preparation with a relatively high activity. The active principle was soluble in alcohol, insoluble in ether, not precipitated by tannin, but completely by phosphotungstic acid. The physiological effects of the preparation were strongly reminiscent of those produced by histamine; but, since they found that the activity was destroyed by heating with alkali, and that hot chloroform would not extract it completely from the residue obtained by evaporation with sodium carbonate, Stern and Rothlin were ofopinion that the principle was not histamine itself, and provisionally named it" lienine." In other publications, many concerned with" hormonal," the sug-gestion can be found that the activity of spleen extracts is due to choline, or histamine, or similar active principles. We knew from our own experience, previously recorded (1), that a principle, occurring ina complex mixture of tissue bases, may show apparent differences in its chemical behaviour from that of pure hista-mine, as great as those described by Berlin and by Stern and Rothlin, and yet be histamine itself. It seemed desirable to examine anew the question of the chemical identity of the histamine-like constituent of spleen extracts. The investigation undertaken with this object has led to additional results of unexpected interest.