Encyclopedia

Spirochete

Also found in: Dictionary, Medical, Wikipedia.
(redirected from spirochaete)

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 It might be outdated or ideologically biased.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.
Mentioned in
References in periodicals archive
Comparative evaluation of molecular assays for the identification of intestinal spirochaetes from diseased pigs.
Pruebas de sensibilidad frente a agentes antimicrobianos en cepas de Brachyspira pilosicoli aisladas a partir de ponedoras comerciales en Colombia
Treponema (43% vs 29%, belong to Spirochaete), Ruminococcus (7% vs 5%, belong to Firmicutes), Roseburia (6% vs 5%, belong to Firmicutes), Pseudobutyrivibrio (6% vs 2%, belong to Firmicutes), and Anaeroplasma (3% vs 2%, belong to Tenericutes) were higher in Mongolian horses than in Thoroughbred horses.
Comparison of fecal microbiota of Mongolian and thoroughbred horses by high-throughput sequencing of the V4 region of the 16s rRNA gene
Phylum % unclassified (derived from Bacteria) 14.48 Proteobacteria 12.91 Firmicutes 11.32 Actinobacteria 11.25 Bacteroidetes 10.16 Verrucomicrobia 8.20 Acidobacteria 5.73 Planctomycetes 4.34 Cyanobacteria 3.33 Aquificae 2.61 Nitrospirae 2.52 Spirochaetes 2.26 Thermotogae 2.10 Deinococcus-Thermus 2.04 Chlamydiae 1.82 Tenericutes 1.53 Dictyoglomi 1.26 Chloroflexi 0.73 Synergistetes 0.59 Thermodesulfobacteria 0.49 Chlorobi 0.33 Fibrobacteres 0.00 Gemmatimonadetes 0.00 Tabla 5: Abundancia relativa (%) de los principales filos identificados en muestras de suelos no contaminados del distrito Usquil, provincia Otuzco, departamento La Libertad.
Caracterizacion molecular de bacterias cultivables y no cultivables procedentes de pozas de lixiviacion con cianuro
More specific stainings were made in cases of suspected pathologies for which other histopathological stainings are indicated [24], such as periodic acid Shiff (PAS) staining and Grocott staining for fungi, Warthin-Starry (WS) for spirochaetes and Ziehl-Neelsen (ZN) for mycobacteria.
Importance of the knowledge of pathological processes for risk-based inspection in pig slaughterhouses (Study of 2002 to 2016)
The study of horses shows that their bacterial communities were dominated by Firmicutes (69.21% control group, 56.72% laminitis group) and Verrucomicrobia (18.13% control group, 27.63% laminitis group), followed by Bacteroidetes, Proteobacteria, and Spirochaetes (Steelman et al., 2012).
The Microbial Community in the Feces of Cape Oryx (Oryx gazella) as Determined by High-throughput Illumina Sequencing Technology
Other dominant phyla identified in the gut of oysters, mussels, and clams include Tenericutes, Bacteroidetes, Actino-bacteria, Firmicutes, Chlamydiae, Fusobacteria, Spirochaetes, Chloroflexi, Plantomycetes, and Verrucomicrobia (Fernandez-Piquer et al.
MICROBIAL ECOLOGY OF THE BIVALVIA, WITH AN EMPHASIS ON THE FAMILY OSTREIDAE
Based on this criterion, a total of twelve rare phyla were detected including Chloroflexi, Deferribacteres, Deinococcus-Thermus, Fusobacterium, Gemmatimonadetes, OP10, Planctomycetes, SR1, Spirochaetes, TM7, Tenericutes, and Verrucomicrobia, which were detected in both stages of crop development.
Bacterial Community of the Rice Floodwater Using Cultivation-Independent Approaches
Given the positive PCR assay result, a Warthin-Starry stain was requested on the histologically processed tissue biopsy and found to be positive for spirochaetes (Fig.
Syphilitic lymphadenitis clinically and histologically mimicking lymphogranuloma venereum
The presence of spirochaetes in human gastric mucosa.
Helicobacter pylori as an occupational hazard in the endoscopy room
Copyright © 2003-2025 Farlex, Inc Disclaimer
All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional.