Chemical and biological properties of a phenol-water extract from leptospira interrogans. Evidence for the absence of lipopolysaccharide
- 1 July 1988
- journal article
- research article
- Published by Springer Nature in Infection
- Vol. 16 (4) , 238-241
- https://doi.org/10.1007/bf01650761
Abstract
Leptospira interrogans, serovar copenhageni was extracted by the phenol-water method and the resulting preparation examined for chemical composition and endotoxic activity. Chemical analysis revealed that a number of sugars were present, however, the amount of lipid content was very low. Further, the preparation was devoid of characteristic endotoxic properties, like lethal toxicity, pyrogenicity and the property to induce the local Shwartzman reaction. The extract, however, was active in the limulus lysate gelation test and in the induction of monocyte activation. It is concluded that the leptospira preparation is devoid of endotoxin properties, both from the chemical and from the biological point of view. Leptospira interrogans serovarcopenhageni-Bakterien wurden mit dem Phenol-Wasser-Verfahren extrahiert. Das so isolierte Material wurde auf seine chemische Zusammensetzung und mögliche endotoxische Aktivität untersucht. Es enthielt verschiedene Zucker, der Anteil an Lipid-Bestandteilen war jedoch sehr gering. Die für Endotoxine charakteristischen Eigenschaften wie Pyrogenität, letale Toxizität und Induktion des Shwartzman-Phänomens waren in dem Extrakt nicht nachweisbar. Das Präparat zeigte jedoch eine starke Limulus-Lysat gelierende Aktivität, die mit der von klassischen Lipopolysacchariden ausSalmonella vergleichbar war. Der Extrakt war auch in der Lage, eine mäßige Aktivierung von Monozyten zu induzieren. Aus diesen Ergebnissen schließen wir, daß das isolierte Material keine endotoxischen Eigenschaften, weder in chemischer noch biologischer Hinsicht, besitzt.This publication has 23 references indexed in Scilit:
- Heterogeneity of Lipopolysaccharide Banding Patterns in Leptospira spp.Microbiology, 1986
- Ultrastructure and Chemical Composition of Lipopolysaccharide Extracted from Leptospira interrogans serovar copenhageniMicrobiology, 1986
- The respiratory burst of phagocytes.Journal of Clinical Investigation, 1984
- Galactosamine-induced sensitization to the lethal effects of endotoxin.Proceedings of the National Academy of Sciences, 1979
- A new and improved microassay to determine 2-keto-3-deoxyoctonate in lipopolysaccharide of gram-negative bacteriaAnalytical Biochemistry, 1978
- COMPARATIVE SPIROCHETE PHYSIOLOGY AND CELLULAR COMPOSITIONPublished by Elsevier ,1976
- Isolation and chemical characterization of outer envelope of Leptospira pomonaCanadian Journal of Microbiology, 1975
- Cleavage of Structural Proteins during the Assembly of the Head of Bacteriophage T4Nature, 1970
- A New Method for the Extraction of R LipopolysaccharidesEuropean Journal of Biochemistry, 1969
- Quantitative Determination of Monosaccharides as Their Alditol Acetates by Gas Liquid Chromatography.Analytical Chemistry, 1965