Biomaterial Database

Lysophosphatidic acids: III. Enhancement of neutrophil chemotaxis. 1980

J M Gerrard, and C C Clawson, and J G White

1-Palmitoyl-lysophosphatidic acid (LPA) was studied for its influence on the chemotaxis and ultrastructure of human neutrophils. By itself, LPA had no effect on the indices of chemotaxis or random migration of neutrophils. However, LPA on either the cellular or attractant side of Boyden chambers significantly enhanced the chemotactic responses of neutrophils to suboptimal concentrations of formyl-methionyl-phenylalanine. The enhancement of chemotaxis was achieved with concentrations of LPA (120-240 microM) that had no effect alone on neutrophil ultrastructure. The results, taken together with recent advances in knowledge of the role of the phosphatidylinositol turnover response in mediating effects of stimulating agents on cells, may provide a novel concept for understanding neutrophil chemotaxis.

UI	MeSH Term	Description	Entries
D008246	Lysophospholipids	Derivatives of PHOSPHATIDIC ACIDS that lack one of its fatty acyl chains due to its hydrolytic removal.	Lysophosphatidic Acids,Lysophospholipid,Acids, Lysophosphatidic
D009239	N-Formylmethionine	Effective in the initiation of protein synthesis. The initiating methionine residue enters the ribosome as N-formylmethionyl tRNA. This process occurs in Escherichia coli and other bacteria as well as in the mitochondria of eucaryotic cells.	N Formylmethionine,Formylmethionine, N
D009504	Neutrophils	Granular leukocytes having a nucleus with three to five lobes connected by slender threads of chromatin, and cytoplasm containing fine inconspicuous granules and stainable by neutral dyes.	LE Cells,Leukocytes, Polymorphonuclear,Polymorphonuclear Leukocytes,Polymorphonuclear Neutrophils,Neutrophil Band Cells,Band Cell, Neutrophil,Cell, LE,LE Cell,Leukocyte, Polymorphonuclear,Neutrophil,Neutrophil Band Cell,Neutrophil, Polymorphonuclear,Polymorphonuclear Leukocyte,Polymorphonuclear Neutrophil
D010712	Phosphatidic Acids	Fatty acid derivatives of glycerophosphates. They are composed of glycerol bound in ester linkage with 1 mole of phosphoric acid at the terminal 3-hydroxyl group and with 2 moles of fatty acids at the other two hydroxyl groups.	Ammonium Phosphatidate,Diacylglycerophosphates,Phosphatidic Acid,Acid, Phosphatidic,Acids, Phosphatidic,Phosphatidate, Ammonium
D002630	Chemotactic Factors	Chemical substances that attract or repel cells. The concept denotes especially those factors released as a result of tissue injury, microbial invasion, or immunologic activity, that attract LEUKOCYTES; MACROPHAGES; or other cells to the site of infection or insult.	Chemoattractant,Chemotactic Factor,Chemotaxin,Chemotaxins,Cytotaxinogens,Cytotaxins,Macrophage Chemotactic Factor,Chemoattractants,Chemotactic Factors, Macrophage,Macrophage Chemotactic Factors,Chemotactic Factor, Macrophage,Factor, Chemotactic,Factor, Macrophage Chemotactic
D002634	Chemotaxis, Leukocyte	The movement of leukocytes in response to a chemical concentration gradient or to products formed in an immunologic reaction.	Leukotaxis,Leukocyte Chemotaxis
D004151	Dipeptides	Peptides composed of two amino acid units.	Dipeptide
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man