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Related to Lipopolysaccharides: O antigen, Lipid A


1. a molecule in which lipids and polysaccharides are linked.
2. a major component of the cell wall of gram-negative bacteria; lipopolysaccharides are endotoxins and important antigens.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

lip·o·pol·y·sac·cha·ride (LPS),

1. A compound or complex of lipid and carbohydrate.
2. The lipopolysaccharide (endotoxin) released from the cell walls of gram-negative organisms that produces septic shock.
Farlex Partner Medical Dictionary © Farlex 2012


(lĭp′ō-pŏl′ē-săk′ə-rīd′, lī′pō-)
Any of a group of polysaccharides in which a lipid constitutes a portion of the molecule, found in the outer cell wall of gram-negative bacteria.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.


A compound or complex of lipid and carbohydrate; the lipopolysaccharide (endotoxin) that is released from the cell walls of gram-negative organisms that produces septic shock.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
Lipopolysaccharide exposure induces inflammation in bovine cumulus-oocyte complexes
* Lowered the resulting elevated circulating lipopolysaccharide levels, and
Lastly, TLR4 mainly recognizes lipopolysaccharide (LPS), which is released from the cell walls of dead gram-negative bacteria and, therefore, plays essential roles in initiating inflammatory responses.
KEYWORDS: Hypertrophic Scar, Fibroblast Cell, Lipopolysaccharide, Mitogen-Activated Protein Kinase.
Whitfield, "Molecular basis for structural diversity in the core regions of the lipopolysaccharides of Escherichia coli and Salmonella enterica," Molecular Microbiology, vol.
Lee, "Celastrol blocks binding of lipopolysaccharides to a Toll-like receptor4/myeloid differentiation factor2 complex in a thiol-dependent manner," Journal of Ethnopharmacology, vol.
Suda et al., "Crucial involvement of the EP4 subtype of prostaglandin E receptor in osteoclast formation by proinflammatory cytokines and lipopolysaccharide," Journal of Bone and Mineral Research, vol.
Thus, this study investigated the effects of lipopolysaccharides from Porphyromonas gingivalis (PgLPS) on cell metabolic activity, expression of pro-inflammatory cytokines and stem cell markers, and osteoblast/cementoblast differentiation potential of periodontal ligament stem cells (PDLSCs).
Jann, "Bacterial lipopolysaccharides: extraction with phenol-water further applications of this procedure," Methods in Carbohydrate Chemistry, vol.
We are not attempting to provide a comprehensive summary on the analytical chemistry and biological effects of lipopolysaccharides but rather to provide our perspective on how gel electrophoresis can be connected to other biochemical techniques for a fine characterization of LPS aggregates and glycoform-specific LPSs.
(12) Also, the active role of lipopolysaccharides in the development and course of cholesteatomas was reported in previous studies.
Lipopolysaccharides (LPS) were extracted from the whole cell of the causative organism (Pasteurella multocida) and quantified by using the semi-carbazide method.