chemotaxis


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Related to chemotaxis: geotaxis, positive chemotaxis

chemotaxis

 [ke″mo-tak´sis]
list; movement (taxis) in response to the influence of chemical stimulation. adj., adj chemotac´tic.
leukocyte chemotaxis the response of leukocytes to products formed in immunologic reactions, wherein leukocytes are attracted to and accumulate at the site of the reaction; a part of the inflammatory response. See also inflammation.

che·mo·tax·is

, positive chemotaxisnegative chemotaxis (kē'mo-tak'sis),
1. Movement of cells or organisms in response to chemicals, whereby the cells are attracted (positive chemotaxis) or repelled (negative chemotaxis) by substances exhibiting chemical properties.
2. The migration of polymorphonuclear leukocytes and macrophages toward higher concentrations of certain fragments of complement.
[chemo- + G. taxis, orderly arrangement]

chemotaxis

/che·mo·tax·is/ (-tak´sis) taxis in response to the influence of chemical stimulation.chemotac´tic

chemotaxis

(kē′mō-tăk′sĭs, kĕm′ō-)
n.
The characteristic movement or orientation of an organism or cell along a chemical concentration gradient either toward or away from the chemical stimulus.

che′mo·tac′tic (-tăk′tĭk) adj.
che′mo·tac′ti·cal·ly adv.

chemotaxis

[-tak′sis]
Etymology: Gk, chemeia + taxis, arrangement
movement toward or away from a chemical stimulus. Chemotaxis is a cellular function, particularly of neutrophils and monocytes, whose phagocytic activity is influenced by chemical factors released by invading microorganisms.

che·mo·tax·is

, positive chemotaxis , negative chemotaxis (kē'mō-tak'sis, pozi-tiv, negă-tiv)
Movement of cells or organisms in response to chemicals.
Synonym(s): chemotropism.

chemotaxis

The movement of a cell or other living organism in a particular direction as a result of attraction by an increasing concentration of a chemical substance. Cells of the immune system find their prey by this means.

chemotaxis

the orientation of a motile cell or an organism in relation to the presence of a particular chemical, the response to a chemorepellent being negative (moving away) and to a chemoattractant being positive (moving towards). For example, the movement of a wasp towards an attractive odour such as beer would be positive chemotaxis. Cells are able to detect changes in the concentration of the chemical and alter their mobility accordingly For example, bacteria will change their pattern of swimming and tumbling.

chemotaxis

attraction of inflammatory cells (neutrophils, macrophages) to sites of actual or potential tissue trauma, mediated by the local release of trigger chemicals (exogenous substances [from infecting microorganisms] and endogenous acute inflammatory response compounds [complement factors, clotting factors, histamine, kinins, prostaglandins, leukotrienes, cytokines, and platelet-activating factor])

che·mo·tax·is

, positive chemotaxis , negative chemotaxis (kē'mō-tak'sis, pozi-tiv, negă-tiv)
Movement of cells in response to chemicals, whereby the cells are attracted or repelled by substances exhibiting chemical properties.

chemotaxis (kē´mōtak´sis),

n a response involving movement that is positive (toward) or negative (away from) to a chemical stimulus.
chemotaxis, leukocyte,
n the phagocytic activity of neutrophils and monocytes in response to chemical factors released by invading microorganisms.

chemotaxis

taxis or directional movement in response to the influence of chemical stimulation.

leukocyte chemotaxis
the response of leukocytes to products formed in immunological reactions, wherein leukocytes are attracted to and accumulate at the site of the reaction; a part of the inflammatory response. See also inflammation.
References in periodicals archive ?
Genco found that, in test tube experiments, bestatin does not affect chemotaxis in neutrophils from healthy subjects, but it almost doubles the chemotactic activity in neutrophils from LJP patients.
This hypothesis has gained increasing interest, as an active ingredient that inhibits neutrophil chemotaxis, has now been isolated from the present subtype of Rose hip (Larsen et al.
Chemotaxis and chemokinesis in 3D macromolecular matrices.
Finally, together with complement factors C5a and C5a des Arg, Gc may act as a co-chemotactic factor in facilitating chemotaxis of neutrophils and monocytes in inflammation (14,15).
Typical life science applications include cell invasion, migration, adhesion, chemotaxis, platelet adhesion and aggregation, wound healing, stem cell differentiation, and microbial biofilm formation.
Other topics addressed include fundamentals of design for synthetic biology, applied cellular engineering, DNA/RNA sequence hybridization, biomolecular computing and cryptography, and chemotaxis.
Endothelin-1 and endothelin-3 induce chemotaxis and replication of pulmonary fibroblasts.
rhPDGF-BB acts like a magnet to attract cells necessary for tissue healing through a process known as chemotaxis, while also stimulating an increase in the number of healing cells through a process known as mitogenesis, thereby expanding the number of cells available for the repair process.
This linear array forms a flowable, biocompatible and bioactive structural matrix that promotes chemotaxis, cellular adhesion, migration and proliferation to stimulate tissue formation.
A special section is included in this year's edition on [Beta]-arrestins with topics that include the role of [Beta]-arrestin-mediated signaling in chemotaxis cellular process, their role in regulating signaling by receptor tyrosine kinases (RTKs), and the role of G protein- coupled receptor kinases and arrestins.
Recent data demonstrate that pan-PI3K inhibition may have desirable effects on chemotaxis and proliferation inhibition in CLL cells over delta isoform-selective PI3K inhibition," Daruka Mahadevan, M.