Fatty acids of Listeria monocytogenes

Abstract

Few studies have been conducted to determine the lipid composition of Listeria monocytogenes cells. Implications of the importance of this class of compounds in the pathogenesis of listeriosis was suggested by the early study of Stanley (5), who found a lipid component from bacterial cells that incited monocyte production in monogastric animals. The chemical nature of this component was not determined, but it was readily extracted with chloroform and later was suggested by Keeler and Gray (1) to be a constituent of the bacterial cell wall or membrane. It is possible that the monocyte-producing activity of the lipid component could be due to the nature of its fatty acid moiety which may be manifest by uncommon or previously unknown fatty acids. This study was initiated to provide basic information of the cellular fatty acids of L. monocytogenes. This report describes the results from 33 strains representing ten serological types of L. monocytogenes (J. Donker-Voet, Proc. Third Intern. Symp. Listeriosis, Rijka Instituut Voor De Volksgezondheid,

Grouping of some clinically relevant Gram‐positive rods by automated fatty acid analysis

“…The presence of large amounts of branched FAs supports this contention. Our data for C. ayuuticum (7), 0. xanthineolytica (22) and L. monocytogenes (25) are in line with those of other authors. Those for CDC Abbreviations see Table 1. group A-4 are not (24); we have no explanation for this phenomenon.…”

Different cellular fatty acid pattern behaviours of two strains of Listeria monocytogenes Scott A and CNL 895807 under different temperature and salinity conditions

“…Both L. monocytogenes strains showed a fatty acid pattern with a high proportion of odd-numbered branchedchain fatty acids as reported previously [12,13]. However, many di¡erences were observed between the two strains.…”

Fatty Acid and Polar Lipid Composition in the Classification of Kurthia

“…On the basis of the fatty acid data kurthias can readily be distinguished from representatives of the mycolic acid-containing Cory neform taxa, Bacterionema and Corynebacterium, which have predominantly straight-chain and monounsaturated fatty acids (Blaschy & Zimmermann 1971;Bowie et al 1972;Alshamaony et al 1977;Minnikin et al 1978~). However, methyl-branched fatty acids are also found as the predominant components in Brochothrix and Listeria (Raines et al 1968;Shaw & Stead 1970;Tadayon & Carroll 1971), Cellulomonas (Minnikin et al 1979) and Arthrobacter (Walker & Fagerson 1965;Shaw & Stead 1971;Bowie et al 1972). All of the Kurthia strains possessed remarkably simple polar lipid patterns (Fig.…”