Process for inhibiting activity of endotoxin
First Claim
1. A pretreating aqueous solution for inhibiting the activity of endotoxin consisting of water, an endotoxin-inhibiting peptide selected from the group consisting of polymyxins A, B, C, D, E, K, M and P, salts of those polymyxins, tachyplesin, polyphemusin and anti-LPS factor, and at least one surfactant, said solution being unable to react with a horseshoe crab hemocyte lysate, and serving not to inhibit or to enhance the reaction of horseshoe crab hemocyte lysate with an endotoxin analogous substance.
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Abstract
By contacting a peptide derivative or a protein having a property of binding to endotoxin (ET) to inhibit the activity of ET, and at least one surfactant with a sample containing ET, the activity of ET can be inhibited, and even when an ET analogous substance having ET activity is present in the thus treated sample, it can be measured without influence of ET.
26 Citations
8 Claims
- 1. A pretreating aqueous solution for inhibiting the activity of endotoxin consisting of water, an endotoxin-inhibiting peptide selected from the group consisting of polymyxins A, B, C, D, E, K, M and P, salts of those polymyxins, tachyplesin, polyphemusin and anti-LPS factor, and at least one surfactant, said solution being unable to react with a horseshoe crab hemocyte lysate, and serving not to inhibit or to enhance the reaction of horseshoe crab hemocyte lysate with an endotoxin analogous substance.
- 5. An aqueous diluting solution for an endotoxin-containing sample, said solution serving to inhibit selectively the activity of the endotoxin in the sample, but not to inhibit the activity of an endotoxin analogous substance in the sample, to make only the latter responsive to horseshoe crab hemocyte lysate, said solution consisting of water, an endotoxin-inhibiting peptide selected from the group consisting of polymyxins A, B, C, D, E, K, M and P, salts of those polymyxins, tachyplesin, polyphemusin and anti-LPS factor, and at least one surfactant, said solution being unreactive with the horseshoe crab hemocyte lysate and not serving to inhibit or to enhance the reaction of the horseshoe crab hemocyte lysate with an endotoxin analogous substance, whereby after dilution with said solution, but before the addition of the horseshoe crab hemocyte lysate, the endotoxin activity in the endotoxin-containing sample is completely inhibited.
Specification