Spirochete

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spirochete

[′spī·rə‚kēt]
(microbiology)
The common name for any member of the order Spirochaetales.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Spirochete

 

a bacterium, measuring 0.1–0.6 micrometer in diameter and 5–500 micrometers in length, in the form of an elongated coiled spiral. The majority of species have a slender axis filament around which the body of the cell is spirally coiled. Spirochetes lack flagella and are characterized by undulating movements, during which the cells rotate around their long axis. Reproduction is by transverse fission.

Spirochetes may be nonpathogenic or pathogenic. The former inhabit freshwaters, and the latter parasitize mollusks and cause syphilis in man (Treponema pallidum), relapsing fever (Borrelia recurrentis), and other spirochetoses. Under artificial conditions, nonpathogenic spirochetes grow on ordinary nutrient mediums and pathogenic spirochetes grow on mediums that contain serum and pieces of fresh tissue or the internal organs of animals. Some forms have not yet been grown in the laboratory.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
That actually increases the chance of infecting your dog with any disease-carrying spirochetes that the tick might be hosting!
miyamotoi was not observed in small mammals (10); possible reasons are that the spirochete is rarer in this locality (NIP = 0.4% in Alameda study sites), that mammal capture periods were dispersed across multiple years and not as coincident with nymphal tick activity, or that brush mice and California mice were not captured at that location.
Lyme spirochetes are found in the lining of the bladder wall.
These findings are supportive of those described by De Brito and colleagues, (4) who described the cross-reactivity of the spirochetes of intestinal spirochetosis with both anti-T pallidum and antiLeptospira interrogans antibodies.
To confirm the species identity, DNA was extracted from cultured spirochetes with a Qiagen DNeasy extraction kit (Qiagen, Germany), following the manufacturer's recommendations, and quantified by spectrophotometry with a NanoDrop 2000 spectrophotometer (Thermo Scientific/Sinapse Biotecnologia Ltda., Brazil).
Following local replication in the skin, spirochetes disseminate widely to multiple organs.
The organisms usually found were mature, smooth surface dental plaque between 7th and 14th day, are spirochetes. (33) The plaque samples were collected in 2 ml of saline containing test tubes and were kept in ice containers to bring down the oral temperatures as at higher temperatures, the motility of spirochetes is lost.
miyamotoi spirochetes are more likely to be seen in blood smears than are their burgdorferi cousins.
Lyme Disease (LD), caused by spirochetes in the Borrelia burgdorferi sensu lato complex, is transmitted by Ixodes spp.
They discuss host-microbe interactions, antibiotics and other chemotherapeutic agents, antiseptics and disinfectants, gram-positive and gram-negative cocci and bacilli, gram-positive bacteria with rudimentary filaments, miscellaneous gram-negative bacteria, spirochetes and bacteria without a cell wall, actinomycetes, pathogenic fungi and superficial mycoses, subcutaneous and systemic mycoses, unicellular and multicellular parasites, and viruses and prions.
Relapsing fever is a recurrent acute febrile infection caused by various Borrelia (Spirochaetales: Spirochaetaceae) spirochetes transmitted either by lice (Pediculus spp.) (epidemic relapsing fever) or by soft ticks (Ornithodoros spp.) (endemic relapsing fever) (Dworkin et al.
(1) IS is a rare disease wherein gram negative bacteria belonging to the Spirochetes species infect the gastrointestinal tract.